АКСИАЛЬНО-ПОРШНЕВОЙ ДВИГАТЕЛЬ И СПОСОБ РАБОТЫ АКСИАЛЬНО-ПОРШНЕВОГО ДВИГАТЕЛЯ

Изобретение может быть использовано в аксиально-поршневых двигателях. Аксиально-поршневой двигатель (1101) содержит по меньшей мере один рабочий цилиндр, питание которого осуществлено от непрерывно работающей камеры (1110) сгорания. Камера (1110) сгорания имеет два входа для воздуха, предназначенного для обеспечения процесса сгорания, выполненные с возможностью подачи воздуха с разными температурами. Раскрыт вариант выполнения аксиально-поршневого двигателя. Технический результат заключается в ускорении получения однородности рабочей смеси. 2 н. и 13 з.п. ф-лы, 8 ил.

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Rotary engine

A rotary engine (1) is characterised by a driven output shaft (30) powered by internal combustion carried out in a cylinder (26) to drive a piston (50) and crankshafts (70, 80) carrying contra-rotating drive gears (10, 12) meshing with a fixed gear ring (88), rotation of the gears (10, 12) transmitting rotary motion to the piston (50) and the cylinder (26), the gear cage base (32), gears (10, 12) and to the output shaft (30). The contra-rotation of the gears (10, 12) on the respective crankshaft (70, 80) provides for a balanced power transmission.

A hydraulic or pneumatic drive system, and a motor and a pump therefor

A fluid motor 212 for a pneumatic or hydraulic drive system comprises: at least one piston means 226; at least one cylinder means 204a, 204b; motion conversion means and a sleeve means 205, 206. The or each cylinder and an end of the or each piston defines a chamber 234a, 234b.The or each cylinder is coupled to a pressure generation and transmission system arranged to cause alternating flow of fluid into and out of the or each chamber to cause reciprocating movement of the piston. The motion conversion means comprises: at least one portion (215) extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, for example a non-linear groove, and at least one linking means 208a, 208b, 209a, 209b. The at least one portion and the or each linking means are relatively rotatable about the central axis. A one of the at least one linking means or the at least one portion is coupled to the at least one piston means so that reciprocating ...

Wobble body mechanism for converting reciprocal movement to rotary movement and viceversa

... 1,010,796. Inclined crank mechanism. B. A. DE WAERN. June 28, 1962 [Jan. 23, 1962], No. 24906/62. Heading F2K. [Also in Divisions F1] In an engine or compressor wherein a wobble body 45 on an inclined crank-pin 42 of a main shaft 43 is connected to a number of pistons 73, the non-rotatable wobble body is slidably anchored at its periphery to a second crankpin 100, of smaller inclination, which is rotated at the same speed as the shaft 43 by a gear train 105 ... 109. As shown a ball 112 sliding on the pin 100 is radially slidable between two projections, Fig. 4 (not shown), on the body 45. If the ratio of the two crank-pin inclinations is one half, the ball 112 may engage a partspherical socket on the body 45-i.e. no radial movement occurs. The wobble body 45 is located on the crank 42 by a thrust bearing flange 53. A flange 34 on the main shaft locates this shaft in the housing 1. Both crank-pins have offset counterbalance masses. In the twelve-cylinder four-stroke engine shown, six pistons ...

INTERNAL COMBUSTION ENGINE HAVING RECIPROCATIVE AND ROTATABLE PISTONS

A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTORAND A PUMP THEREFOR

HUBKOLBENMOTOR MIT VERBESSERTEM MASSENAUSGLEICH

Die Erfindung betrifft einen Hubkolbenmotor (1) mit vier Zylindern (8, 8') mit kreisförmigem Querschnitt mit zueinander parallelen Zylinderachsen und einer Abtriebswelle (2), wobei die Zylinderachsen, im Axialschnitt gesehen, in den Eckpunkten eines Rechteckes liegen.Der erfindungsgemäße Hubkolbenmotor ist dadurch gekennzeichnet, dass das Rechteck ein Quadrat ist, in dessen Zentrum die Achse der parallel zu den Zylinderachsen verlaufenden Abtriebswelle (2) liegt, dass jeweils zwei einander diagonal gegenüberliegende Zylinder (8; 8'), axial gesehen, gleichsinnig und, axial gesehen, gegensinnig zu den beiden anderen Zylindern (8'; 8) angeordnet sind, und dass die Kraft- bzw. Momentenübertragung von jedem Zylinder (8, 8') über eine eigene rotierende Kurbel (7, 7') und eine Verzahnung (3, 4, 5, 6) auf die Abtriebswelle (2) erfolgt.

AXIAL PISTON MACHINE.

Rotary engine

INTERNAL COMBUSTION ENGINE

COMPRESSED AIR RADIAL MOTOR.

MOTOR WITH ROTARY CYLINDER WALL

AXIAL-PISTON ENGINE, METHOD FOR OPERATING AN AXIAL-PISTON ENGINE, AND METHOD FOR PRODUCING A HEAT EXCHANGER OF AN AXIAL-PISTON ENGINE

The aim of the invention is to improve the efficiency of an axial-piston motor comprising at least one compressor cylinder, at least one working cylinder and at least one pressure line guiding the compressed fuel from the compressor cylinder to the working cylinder. To this end, the axial-piston motor is provided with at least one compressor cylinder inlet valve having an annular cover.

Axial piston pump or motor

An axial piston pump or motor comprising a housing (10) defining a cavity (13) and a drive shaft (14) having a portion thereof rotatably mounted in the housing (10) and extending into the cavity (13). The cavity (13) has an open end remote from the drive shaft (14) and a valve block (12) closes the open end of the housing (10). A removable rotating group cartridge (16) is positioned in the cavity (13) between the valve block (12) and drivingly engaged with the shaft (14). The cartridge (16) comprises a valve plate (21) engaging the valve block (12) and an angle block (22), a rotatable cylinder barrel (25) interposed between said valve plate (21) and said angle block (22) in abutment with the valve plate (21) and in driving relation with the drive shaft (14). The cylinder barrel (25) has a plurality of piston cylinders (26), each of which has a port for communicating the cylinders with a valve face (21a) of the valve plate (21), a piston (27) in each cylinder, shoes (29) connected to the ...

ГИДРАВЛИЧЕСКАЯ ИЛИ ПВНЕМАТИЧЕСКАЯ ПРИВОДНАЯ СИСТЕМА, ДВИГАТЕЛЬ И НАСОС ДЛЯ НЕЕ

ГИДРАВЛИЧЕСКАЯ ИЛИ ПНЕВМАТИЧЕСКАЯ ПРИВОДНАЯ СИСТЕМА, ДВИГАТЕЛЬ И НАСОС ДЛЯ НЕЕ

РОТОРНЫЙ ДВИГАТЕЛЬ

... 1. Роторный двигатель (1), отличающийся тем, что он содержит корпус (22) цилиндра; цилиндр (26), установленный в корпусе (22) с возможностью аксиального вращения; головку (27) цилиндра, выполненную с возможностью совместного вращения с торцом цилиндра (26) и прикрепленную к этому торцу; по меньшей мере одно отверстие (28), предусмотренное в головке (27) цилиндра; клапанный блок (78), прикрепленный к корпусу (22) и совмещенный с головкой (27) цилиндра с обеспечением сообщения каналов; поршень (50), установленный с возможностью возвратно-поступательного движения внутри цилиндра (26); по меньшей мере два вращающихся в противоположных направлениях коленчатых вала (70, 80), каждый из которых содержит по меньшей мере одно колено (45, 47); шатуны (48, 49), прикрепленные к колену (45, 47) соответствующего коленчатого вала (70, 80) и к поршню (50); основание (32) стакана шестерней, прикрепленное к цилиндру (26); шестерни (10, 12), жестко соединенные с каждым коленчатым валом (70, 80) и установленные ...

A hydraulic or pneumatic drive system, and a motor and a pump therefor

A pedal-driven vehicle or machine comprising a hydraulic or pneumatic drive system is provided. The system comprises a fluid pump, a fluid motor and a pressure transmission system. The fluid pump 410 comprises: a drive shaft 439 mounted in a bracket of the vehicle or machine, and rotatable about an axis by a pedalling action; a cam 441 mounted on the drive shaft; at least three piston means 401a-c; and for each piston means, a corresponding cylinder means 403a-c, wherein an end of each piston means 401a-c and the corresponding cylinder means 403a-c define a chamber. The at least three piston means 401a-c are arranged relative to the cam 441 so that rotation of the cam 441 with the drive shaft 439 causes reciprocating movement of each piston means 401a-c in the corresponding cylinder means 403a-c. The fluid motor is configured to drive a wheel. The pressure transmission system utilises fluid, operatively coupled to the or each chamber and to the fluid motor, wherein the reciprocating movement ...

HUBKOLBENMOTOR MIT VERBESSERTEM MASSENAUSGLEICH

Die Erfindung betrifft einen Hubkolbenmotor (1) mit vier Zylindern (8, 8') mit zueinander parallelen Zylinderachsen und einer Abtriebswelle (2). Der erfindungsgemäße Hubkolbenmotor ist dadurch gekennzeichnet, dass die Zylinder¬achsen im Axialschnitt ein Quadrat bilden, in dessen Zentrum die Achse der parallel zu den Zylinderachsen verlaufende Abtriebswelle (2) liegt, dass jeweils zwei einander diagonal gegenüberliegende Zylinder (8; 8') axial gesehen gleichsinnig und axial gesehen gegensinnig zu den beiden anderen Zylindern (8'; 8) angeordnet sind, und dass die Kraft- bzw. Momentenübertragung von jedem Zylinder (8, 8') über eine eigene Kurbel (7, 7') und eine Verzahnung (3, 4, 5, 6) auf die Abtriebswelle (2) erfolgt.

MOTOR ZUR ERZEUGUNG EINER BEWEGUNG DURCH FLUSSIGES ODER GASFORMIGES DRUCKMEDIUM

ENGINE FOR THE PRODUCTION OF A MOVEMENT BY FLUSSIGES OR GASFORMIGES PRINTING MEDIA

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Hydraulic and pneumatic drive systems and fluid motors (12) and fluid pumps (10) therefor are disclosed. In such systems, rotation motion is converted to reciprocating motion or vice versa. In particular, a motion conversion means comprises a portion extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, and a linking means, wherein the portion and the linking means are relatively rotatable about the central axis and a one of the linking means and the portion is fixedly coupled to a piston means, wherein the linking means and the portion are configured to cooperate whereby the reciprocating movement of the piston means causes relative rotary motion of the other of the portion and the linking means about said central axis. The other of the portion and the linking means may be coupled to a sleeve means to cause rotation thereof.

A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTOR AND A PUMP THEREFOR

Hydraulic and pneumatic drive systems and fluid motors (12) and fluid pumps (10) therefor are disclosed. In such systems, rotation motion is converted to reciprocating motion or vice versa. In particular, a motion conversion means comprises a portion extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, and a linking means, wherein the portion and the linking means are relatively rotatable about the central axis and a one of the linking means and the portion is fixedly coupled to a piston means, wherein the linking means and the portion are configured to cooperate whereby the reciprocating movement of the piston means causes relative rotary motion of the other of the portion and the linking means about said central axis. The other of the portion and the linking means may be coupled to a sleeve means to cause rotation thereof.

INTERNAL COMBUSTION ENGINE WITH MOBILE PISTONS HAS TO AND FROM AND IN ROTATION

Internal combustion engine with staged compression and relaxation

A motor for a hydraulic or pneumatic drive system

Hydraulic and pneumatic drive systems and fluid motors and fluid pumps therefor are disclosed. In such systems, rotation motion is converted to reciprocating motion or vice versa. In particular, a motion conversion means comprises a portion extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, and a linking means, wherein the portion and the linking means are relatively rotatable about the central axis and a one of the linking means and the portion is fixedly coupled to a piston means, wherein the linking means and the portion are configured to cooperate whereby the reciprocating movement of the piston means causes relative rotary motion of the other of the portion and the linking means about said central axis. The other of the portion and the linking means may be coupled to a sleeve means to cause rotation thereof.

PISTON MACHINE

The invention relates to a piston machine comprising two (or more) housing parts (3a, 3b), which are each in the shape a circular cylinder segment, but which are joined to each other in such a way that the housing parts are rotated 180° with respect to each other, and which enclose a common cavity and each have a dual piston plate (1, 2), wherein said dual piston plates are associated with the respective housing part and driven separately and synchronously in opposite directions. Said dual piston plates, together with the respective adjacent angled side wall (15, 16) of the housing part, said side wall having inlet and outlet valves (18a/b, 19a/b), define two outer working chambers (A1 and A2) and one (or more) inner working chambers (A3) are defined between the dual piston plates (1, 2), said one or more inner working chambers having inlet and outlet valves (18c, 19c) formed in a rear housing wall (13) at the height of an imaginary separating line X between the housing parts (3a, 3b).

Cradle bearing arrangement for axial piston hydraulic devices

Arcuate bearings are useful, for example, in pivotally supporting a cradle swashplate of axial piston variable displacement hydraulic devices. The bearings of known hydraulic devices have either been a pair of laterally spaced roller bearings assembly or a pair of laterally spaced sleeve bearings. The subject hydraulic device includes a roller bearing assembly positioned between the swashplate and the housing at the side of the swashplate subjected to high loads and a less expensive sleeve bearing positioned between the swashplate and the housing at the other side of the swashplate subjected to low loads. By using this combination of bearings, the overall cost of the hydraulic device is reduced without impairing the operation of the hydraulic device.

PISTON MACHINE WITH CYLINDRICAL WORKING CHAMBER OR CHAMBERS

РОТОРНЫЙ ДВИГАТЕЛЬ

Настоящее изобретение относится к двигателю внутреннего сгорания (ДВС), а конкретно к ДВС роторного типа. Роторный двигатель (1) содержит: корпус (22) цилиндра, цилиндр (26), головку (27) цилиндра, клапанный блок (78), поршень (50), по меньшей мере, два коленчатых вала (70, 80), шатуны (48, 49), основание (32) стакана, шестерни (10, 12), зубчатое кольцо (88) и выходной вал (30). Цилиндр (26) установлен в корпусе (22) с возможностью аксиального вращения. Головка (27) цилиндра прикреплена к торцу цилиндра (26) и выполнена с возможностью совместного с ним вращения. Клапанный блок (78) прикреплен к корпусу (22) и совмещен с головкой (27) цилиндра. Коленчатые валы (70, 80) вращаются в противоположных направлениях. Основание (32) стакана шестерней прикреплено к цилиндру (26). Шестерни (10, 12) жестко соединены с каждым коленчатым валом (70, 80). Зубчатое кольцо (88), прикреплено к корпусу (22) и взаимодействует с каждой из шестерен (10, 12). Выходной вал (30) соединен с основанием (32) стакана ...

ГИДРАВЛИЧЕСКАЯ ИЛИ ПНЕВМАТИЧЕСКАЯ ПРИВОДНАЯ СИСТЕМА, ДВИГАТЕЛЬ И НАСОС ДЛЯ НЕЕ

Группа изобретений относится к области машиностроения, в частности к насосам для приводных систем. Гидравлический или пневматический насос для приводной системы содержит двигатель, цилиндрическое средство для поршневого средства. Гидравлическая или пневматическая приводная система содержит насос, линию передачи давления для цилиндрического средства, двигатель. Гидравлический или пневматический двигатель для приводной системы содержит поршневые средства и цилиндрическое средство. Узел втулки содержит двигатель. Гидравлическая или пневматическая приводная система содержит двигатель, линию передачи давления для цилиндрического средства, насос. Гидравлическая или пневматическая приводная система содержит линию для передачи давления, насос, двигатель. Машина или транспортное средство с приводом от педалей содержит приводную систему. Достигается повышение надежности. 7 н. и 15 з.п. ф-лы, 42 ил.

Ultra compact internal combustion piston engine having rack gears

An internal combustion engine has double-ended pistons 5 and a combustion chamber at the end of each cylinder. Instead of connecting rods and a crankshaft, the movement of the pistons is recovered by piston motion recovery gears (PMRGs) the outer surfaces of which engage with rack gears which protrude from each side of the pistons 5. The outer surface of each PMRG has a total of 180 degrees of gear teeth, two sections of 90 degrees at 90 degree intervals. The PMRGs turn secondary bevel gears which turn the primary gears 2 and primary gear shafts 1. The engine can operate on a two-stroke or a four-stroke cycle. As each piston reaches top dead centre the toothed sections of PMRGs are parallel, the timing for this being provided by the primary and secondary gears.

I.c. engine with variable stroke and constant compression-ratio for use with alternative fuels

The engine has a variable stroke, constant compression-ratio mechanism, eg a z-crank. A method of operation and design is disclosed whereby the i.c. engine can continue to be a method of operation and design whereby the internal combustion engine can continue to be operated in a practical and economic manner, to achieve the legislative emission and conservation of diminishing supplies of fossilised fuel and materials now being required world wide by the policy makers, manufacturers, environmentalists and conservationists: -

Hydraulic axial piston machine

A hydraulic or pneumatic drive system for a pedal-driven vehicle or machine

Diesel internal combustion engine

A diesel internal combustion engine in which compression of the inlet air is completed at top dead centre where fuel injection 22 commences. The fuel is injected into a constant volume chamber when the opposed pistons are held a constant distance apart by cams designed with profiles 18, 19 such that there is a dwell period 21. After fuel injection is completed 26 the combustion chamber remains at constant volume for a period until the cam profiles cause the pistons to move apart again 28. During this phase reduction of oxides of nitrogen and particulate matter takes place at bulk gas temperature, after which the pistons separate and return to bottom dead centre and the gases expand and the temperature reduces accordingly. The fuel injection angle is considerably greater than for a conventional crank-driven internal combustion engine and the peak combustion temperature is thereby reduced resulting in an overall considerable reduction in emissions of oxides of nitrogen and particulates.

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Diesel internal combustion engine

PISTON ENGINE WITH AT LEAST A CYLINDRICAL CHAMBER FOR EMPLOYEES' WELFARE.

AXIAL PISTON MACHINE, IN PARTICULAR FOR AN AXIAL-PISTON PUMP OR AN AXIAL-PISTON MOTOR

Axial piston machine, in particular an axial piston pump or an axial piston motor

Variable stroke pump

LINEAR-ROTARY MOTION CONVERSION MECHANISM

An axial mechanism for converting between linear reciprocating motion and rotary motion comprises a z-crank shaft, a wobble member rotationally mount ed to the angled crank pin of the z- crank shaft, and one or more pistons wi th a connecting rod between each piston and a pivot joint to the wobble memb er. In one embodiment the connecting rods have sufficient inherent flexibili ty to accommodate sideways motion in a 360° orbit at the wobble member end o f the connecting rod. In another embodiment there is a lubrication communica tion passage from within the wobble member to each of said pivot joints. In another embodiment each such pivot joint is fitted to the wobble member an i ntegral unit. In another embodiment the z-crank shaft is supported for rotat ion by bearings all positioned to one side of the z-crank shaft, spaced alon g the output drive end of the z-crank shaft. In another embodiment a torque restraint member is coupled between the wobble member and a non-moving refer ence point ...

New diesel rotary engine at two times with variable rooms

INTERNAL COMBUSTION ENGINE WITH MOBILE PISTONS HAS TO AND FROM AND IN ROTATION

HYDRAULIC MACHINE INCLUDING A BARREL ROTATABLY DRIVEN BY ITS OUTER RIM

Machine hydraulique pouvant fonctionner en moteur ou en pompe, comprenant un barillet (60) tournant autour d'un axe principal, présentant des cylindres parallèles à l'axe recevant des pistons (62) qui sont actionnés par un plateau incliné (64) fixe en rotation, caractérisée en ce que le barillet (60) comporte un moyen d'entraînement en rotation (80) lié à son contour radial extérieur.

New rotary diesel engine at two times

Axial piston pump or motor

An axial piston pump or motor comprising a housing (10) defining a cavity (13) and a drive shaft (14) having a portion thereof rotatably mounted in the housing (10) and extending into the cavity (13). The cavity (13) has an open end remote from the drive shaft (14) and a valve block (12) closes the open end of the housing (10). A removable rotating group cartridge (16) is positioned in the cavity (13) between the valve block (12) and drivingly engaged with the shaft (14). The cartridge (16) comprises a valve plate (21) engaging the valve block (12) and an angle block (22), a rotatable cylinder barrel (25) interposed between said valve plate (21) and said angle block (22) in abutment with the valve plate (21) and in driving relation with the drive shaft (14). The cylinder barrel (25) has a plurality of piston cylinders (26), each of which has a port for communicating the cylinders with a valve face (21a) of the valve plate (21), a piston (27) in each cylinder, shoes (29) connected to the ...

ГИДРАВЛИЧЕСКАЯ ИЛИ ПНЕВМАТИЧЕСКАЯ ПРИВОДНАЯ СИСТЕМА, ДВИГАТЕЛЬ И НАСОС ДЛЯ НЕЕ

Группа изобретений относится к области машиностроения, в частности к насосам для приводных систем. Гидравлический или пневматический насос для приводной системы содержит двигатель, цилиндрическое средство для поршневого средства. Гидравлическая или пневматическая приводная система содержит насос, линию передачи давления для цилиндрического средства, двигатель. Гидравлический или пневматический двигатель для приводной системы содержит поршневые средства и цилиндрическое средство. Узел втулки содержит двигатель. Гидравлическая или пневматическая приводная система содержит двигатель, линию передачи давления для цилиндрического средства, насос. Гидравлическая или пневматическая приводная система содержит линию для передачи давления, насос, двигатель. Машина или транспортное средство с приводом от педалей содержит приводную систему. Достигается повышение надежности. 7 н. и 15 з.п. ф-лы, 42 ил.

Аксиально-поршневой двигатель внутреннего сгорания

Изобретение относится к двигателестроению, к аксиально-поршневым двухтактным двигателям внутреннего сгорания. Техническим результатом является повышение КПД и литровой мощности, снижение веса. Аксиально-поршневой двухтактный двигатель внутреннего сгорания с параллельным расположением цилиндров содержит корпус из двух половин с шестью криволинейными цилиндрами, крышку корпуса с выпускными окнами, воздушные каналы, выходной вал с разъемным наклонным диском, пространственно-качающуюся шайбу с шестью цилиндрическими пальцами, опорное конусное гнездо, перепускной конусный распределитель, осевой турбонагнетатель, плавающую втулку, газовый кожух, воздушный вентилятор, маховик, дугообразную перепускную канавку, кольцевую нагнетательную масленую канавку, перепускные перемычки, воздухоочиститель. 2 ил.

Механизм с косой шайбой аксиального двигателя

Изобретение относится к машиностроению, в частности к двигателям внутреннего сгорания (ДВС), и может быть использовано в качестве привода транспортных средств, механизмов и оборудования. Предлагаемая конструкция механизма с косой шайбой обеспечивает бесшатунное соединение поршня с качающимся узлом. Механизм с косой шайбой аксиального двигателя, содержащий две косые шайбы, выполненные с противовесами и закрепленные на валу через шпонки или шлицы, имеют между собой установленную через конические подшипники ступицу с двумя или более двуплечими рычагами, на концах которых во втулках имеются пальцы крестовины с отверстиями, куда установлены поршневые пальцы, закрепленные на поршнях двигателя. 2 ил.

Аксиально-поршневой двигатель внутреннего сгорания

АКСИАЛЬНО-ПОРШНЕВОЙ ДВИГАТЕЛЬ И СПОСОБ РАБОТЫ АКСИАЛЬНО-ПОРШНЕВОГО ДВИГАТЕЛЯ

... 1. Аксиально-поршневой двигатель, содержащий по меньшей мере один рабочий цилиндр, питание которого осуществлено от непрерывно работающей камеры сгорания, характеризующийся тем, что он снабжен системой регулирования работы камеры сгорания, выполненной с возможностью подачи воды в камеру сгорания.2. Аксиально-поршневой двигатель по п.1, характеризующийся тем, что он выполнен с возможностью подачи воды в камеру сгорания независимо от подачи воды в компрессор агента сгорания или перед ним.3. Аксиально-поршневой двигатель по п.1 или 2, снабженный системой горелок, включающей предварительную горелку и основную горелку, и выполненный с возможностью подачи воды в основную камеру сгорания.4. Аксиально-поршневой двигатель по п.1, снабженный системой горелок, включающей предварительную горелку и основную горелку, и выполненный с возможностью подачи воды в камеру предварительного сгорания.5. Аксиально-поршневой двигатель по п.1, характеризующийся тем, что он выполнен с возможностью подачи воды для ...

ENGINE FOR THE PRODUCTION OF A MOVEMENT BY FLUSSIGES OR GASFORMIGES PRINTING MEDIA

COMPRESSED AIR RADIAL MOTOR

The compressed air radial motor comprises a supporting disc (11), supporting a plurality of fluid cells (4), which is pneumatically controlled by means of a control head (17) disposed rotatably fixed in the motor housing (10) and which is rotatably connected to a conical supporting disc (14), supported on the motor shaft (13), via the fluid cells (4). This motor distinguishes itself by a diaphragm (30) disposed at the outer front side of the control head (17) which, on the inner side, is under the flow pressure of the pressure medium flowing through the driving-side of the control head (17), and, on the outer side, supports the control head (17) against the supporting disc (11) via a counter surface (31) in the motor housing (10). Such a compressed air radial motor has a highest torque at every driving speed.

AXIAL PISTON MACHINE FOR EXPANSION

Precession modulated transmission

This invention pertains to a continuously variable differential transmission utilizing an axial array of dampers to induce and control the gyration frequency of a precessing plate. This mechanism consists of an input shaft driving a core group containing an axial array of dampers peripherally engaging a more-or-less axis symmetric Precession Plate, in a torsionally rigid fashion. This arrangement is coaxially disposed within a Transfer Case by a means allowing free rotation about a common central axis. This Transfer Case Contains an Abutment plate that provides a plane skewed at a non-right angle from said common axis. Dampers of said Core Group induce said Plate to maintain contact with said Abutment. As such, rotation imparted to the input shaft induces a linear, axially directed motion upon the damper array. The torsional rigidity of this assembly combined with the positive extension force exerted by the dampers, insure the modulation plate maintains engagement of the skewed plainer ...

WEIGHT TRAINING APPARATUS

A weight training apparatus using hydraulics or pneumatics for applying positive and negative resistance closer to a user's maximum capacity throughout a lift is provided. The apparatus allows for weight training without weights. The apparatus may provide a more effective and safer mechanism for training than conventional techniques. An aerobic apparatus using hydraulics or pneumatics for a more realistic feel is also provided. Methods of using the devices are also provided. 1. A weight training apparatus comprising:a motor configured to apply a first rotational force;a pump including a pump inlet and a pump outlet, the pump configured to be driven by the first rotational force;a reservoir having a reservoir inlet and a reservoir outlet, the reservoir outlet in fluid communication with the pump inlet;a housing defining an internal cavity and having a longitudinal axis, the internal cavity configured to communicate with the pump outlet and the reservoir inlet through a fluid pathway; anda piston at least partially occupying the internal cavity and configured to move within the housing in a first direction and a second direction opposite the first direction from a first position to a second position along the longitudinal axis, the piston includes a piston shaft, a piston head having a first piston surface and a second piston surface opposite the first piston surface and a linkage configured for communication with a user, the piston head separating a blind end of the internal cavity distal to the piston shaft and a head end of the internal cavity proximal to the piston shaft,wherein the fluid pathway is configurable to inhibit movement of the piston in the first direction along the longitudinal axis at a first fluid pressure thereby resisting movement of the linkage when a first user force is applied to the piston in the first direction through the linkage and the fluid pathway is configurable to apply a second fluid pressure to one of the first piston surface or the ...

Cylinder sleeve assembly

A cylinder sleeve is composed of multiple identical interlocking sleeve elements. Each sleeve element has a circular cylindrical portion and an integral circular arc portion tangent to the cylindrical portion. The circular arc portion has a boss on one end and an offset finger on the other which mates with the boss of an adjacent sleeve element to fix the adjacent sleeve elements together radially.

Axial-piston machine

Hydraulic system for starting internal combustion engines

... 959,726. Reciprocating motors and pumps; turning gear. NEW YORK AIR BRAKE CO. June 8, 1962 [June 23, 1961], No. 22230/62. Headings F1A and F1K. [Also in Division G3] A variable-output, swash-plate pump or motor unit, Fig. 1, is operable as a motor for starting an I.C. engine and as a pump by the engine when started. For starting the I.C. engine, a valve 44, Fig. 2, is opened to connect a constant pressure source 41 to a pressure-responsive valve 52 and to motor inlet 8, the capacity of source 41 being less than the flow requirements of the motor when the engine has started. The pressure moves valve 52 to the right against spring 60 to connect swash-plate tilting motor 26 to pressure to tilt the swash-plate to its motoring position. When the I.C. engine starts, the motor demand exceeds the supply, causing a pressure drop which permits a spring 19 to return the swash-plate to its zero stroke position. When pumping operation is required, valve 44 is closed and fluid system valve 112 opened ...

Hydraulic axial piston machine

The invention concerns a hydraulic axial piston machine (1) with a cylinder body (3), at least one piston (9) axially displaceable in the cylinder body (3), said piston (9) resting on a swash plate (13) by way of a slide shoe (11), with a pressure plate (14) loading the slide shoe (11) in the direction of the swash plate (13), and a hold-down part (16), which bears with a contact surface (18) on a counter surface (20) of the pressure plate(14) on the side facing away from the swash plate (13). It is desired to operate the machine with as little wear as possible. For this purpose, the contact surface (18) is formed by a portion of the circumferential surface of a cone the apex (19) of which is directed towards the swash plate (13).

Piston and cylinder devices

The invention relates to piston-and-cylinder devices having an output member adapted to drive vehicles, generators or other mechanical arrangements. The device may in its simplest form comprise a cylinder (2) including a chamber (14) at least one piston (16) having an exterior cylindrical surface (18), and which is adapted to partake of a motion having a component of movement lengthwise of the cylinder (2) and a rotatable output member (8). There are also provided cam means comprising a first cam part and a second cam part, one of said cam parts being a cam track arrangement (20) formed for example in the piston surface and the other being a cam follower means (26) formed on the inside surface of the cylinder (2) and adapted to engage said track arrangement (20), the construction and operation being such that said cam means (20, 26) operates to impart to the motion of the piston (16) a rotational component of movement and such that rotary motion produced in the output member (8) is derived ...

A hydraulic or pneumatic drive system, and a motor and a pump therefor

A hydraulic or pneumatic drive system, and a motor and a pump therefor

A hydraulic or pneumatic motor comprises: first and second cylinder means 204a, 204b respectively defining first and second chambers 234a, 234b, and a double-ended piston means 226 having a first end 226a and a second end 226b. Each chamber comprises an inlet for inflow of fluid and an outlet for outflow of fluid 38c-38f, the inlet and the outlet being operatively coupled to a fluid transmission system. The piston means 226 is reciprocally moveable so that the first end 226a and the second end 226b move alternately into and out of the first and second chambers 234a, 234b to alternately decrease and increase the volume of the first and second chambers, respectively. The motor also comprises control means arranged to permit and prevent flow of fluid into and out of the first and second chambers 234a 234b through the inlet and outlet, to enable reciprocating movement of the piston means 226. The control means comprises actuating means 221 coupled to the piston means 226. Movement of one of ...

INTERNAL COMBUSTION ENGINE

An internal combustion engine is disclosed having opposed, axially aligned, annular reciprocating and rotatable pistons connected through radially disposed crankshafts to a drive shaft which extends coaxially of the opposed pistons. The crankshafts are so supported to permit rotation about the axis of the drive shaft when a clamping brake is released, as during an idle condition. Planetary cam plates are rotated by and in timed relation to the crankshafts and serve to control valve and ignition operation for four cycle operation.

NUTATING DRIVE

A nutation frame is mounted on a base at a fulcrum connection for limited angular movement about those axes which are perpendicular to a nutation axis and is restricted against cumulative rotary movement about the nutation axis. The nutation frame rigidly connects reciprocating connections on axes approximately parallel to the nutation axes and radially spaced therefrom and a number designed for circular motion about said axis being axially displaced from said fulcrum. The frame can thus convert circular movement about the nutation axis to reciprocating movement or vice versa.

A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTOR AND A PUMP THEREFOR

A fluid motor (212) is described for a pneumatic or hydraulic drive system, comprising: at least one piston means (226); at least one cylinder means (204a, 204b), motion conversion means and a sleeve means (205, 206). The or each cylinder means and an end of the or each piston means is located in a corresponding one of the cylinder means defines a chamber (234a, 234b). The or each cylinder means is operatively coupled to a pressure generation and transmission system arranged to cause alternating flow of fluid into and out of the or each chamber, thereby to cause reciprocating movement of the piston means. The motion conversion means comprises: at least one portion (215) extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, for example a non-linear groove, and at least one linking means (208a, 208b, 209a, 209b,). The at least one portion and the or each linking means are relatively rotatable about the central ...

A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTOR AND A PUMP THEREFOR

Hydraulic and pneumatic drive systems and fluid motors (12) and fluid pumps (10) therefor are disclosed. In such systems, rotation motion is converted to reciprocating motion or vice versa. In particular, a motion conversion means comprises a portion extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, and a linking means, wherein the portion and the linking means are relatively rotatable about the central axis and a one of the linking means and the portion is fixedly coupled to a piston means, wherein the linking means and the portion are configured to cooperate whereby the reciprocating movement of the piston means causes relative rotary motion of the other of the portion and the linking means about said central axis. The other of the portion and the linking means may be coupled to a sleeve means to cause rotation thereof.

Axial piston engine

HYDRAULIC MACHINE HAVING A CYLINDER DRIVEN ROTATABLY BY ITS OUTER RIM

COMPRESSOR OF THE TYPE HAS PISTONS INVOLVE IN RECIPROCATING MOTION

Rotary diesel engine at two times

Integrated steam motor

This invention is directed to an engine having an external combustion chamber for creating a vapor under high pressure. The vapor under high pressure is introduced to a high pressure cylinder for moving a high pressure piston. The vapor, upon leaving the high pressure cylinder, flows to a low pressure cylinder for moving a low pressure piston. The pistons are attached by connecting rods to a swash plate. The pistons move in a rectilinear movement. The swash plate converts the rectilinear movement to a rotary movement for a rotary output crankshaft. The external combustion chamber can be fueled by air and also by a solid, liquid, or vapor. The solid can be powdered coal. The liquid can be hydro-carbons or an organic material. The vapor can be one of many such as a product of combustion of hydrogen and oxygen. The hydrogen and oxygen can be burned to produce a high temperature and high pressure steam. The introduction of high pressure vapor into the cylinders and running of the engine is ...

SPLIT-CYCLE ENGINE WITH A VARIABLE DISPLACEMENT COMPRESSOR AND A ROTARY MOTOR

A split-cycle internal combustion engine includes a variable displacement compressor having two or more cylinders, an adjustment mechanism for varying the displacement volume of the compressor and possibly the phase between the compressor and the motor, and a rotary motor having two or more expansion chambers. A passage valve system located between the compressor and the motor transfers working fluid and combustion exhaust products, and, in addition, mechanically and thermally isolates the compressor from the high pressures and temperatures present in the motor. 1. A split-cycle engine comprising:(a) a variable compressor comprising two or more cylinders;(b) a rotary motor, comprising two or more expansion chambers;(c) a passage valve system in communication with said variable compressor and said rotary motor, configured to mechanically and thermally isolate said variable compressor from said rotary motor; and(d) a phase adjustment mechanism for varying a phase shift between said variable compressor and said rotary motor.2. (canceled)3. The engine of claim 1 , wherein said phase adjustment mechanism comprises a helical bolt.4. The engine of claim 1 , further comprising a stroke adjustment mechanism.5. The engine of claim 4 , wherein said stroke adjustment mechanism comprises at least one of a tilted swash plate claim 4 , a yoke with a spiral goove claim 4 , and a crown-like plate.6. (canceled)7. (canceled)8. The engine of claim 1 , wherein said passage valve system comprises a stack of elements including at least one static plate operatively coupled to at least one rotating disc.9. The engine of claim 8 , wherein at least one element of said stack of elements comprises a material having low thermal conductivity.10. The engine of claim 9 , wherein said material having low thermal conductivity is a refractory metal.11. The engine of claim 8 , wherein at least one element of said stack of elements comprises a material with a high tensile strength.12. The engine of ...

НАСОС С ПЕРЕМЕННЫМ ХОДОМ

Rotary thrust piston, pump and motor - has spherical outer bearing shell to form external bearing socket

A piston (KS) slides along the axle line (a-A) and ring or roller bearings (R) are set at an angle to the axle. The external bearing socket is designed as a spherical shell which can be accomodated within the cylindrical supercharger (LA) and combustion chamber (B). ADVANTAGE - Gives a seal in all piston positions.

Axial piston machine

The swivel plate (19) of an axial piston machine is supported in brackets (24, 25) which are fixed on the cover (11) of the housing (10). The control surface and the admission and discharge ducts for the machine are located in this cover. The brackets (24, 25) are not connected to the housing (10), which is likewise fixed directly on the cover (11). This prevents drive mechanism forces being transmitted by way of the housing to the solid cover, the line of forces instead passing directly from the swivel plate (19) by way of the brackets (24, 25) to the cover (11). In this way, good isolation of the structure-borne noise is achieved, thereby significantly reducing noise. ...

Hydrostatische Kolbenmaschine nach dem Floating-Cup-Konzept

Die Erfindung betrifft eine hydrostatische Kolbenmaschine nach dem Floating-Cup-Prinzip. In der hydrostatischen Kolbenmaschine (1) ist eine erste Schrägscheibe (16) und eine zweite Schrägscheibe (17) vorgesehen. Auf der ersten Schrägscheibe stützt sich eine erste Zylindertrommeleinheit (11, 14) ab und auf der zweiten Schrägscheibe (17) stützt sich eine zweite Zylindertrommeleinheit (12, 15) ab. Mit einer Triebwelle (5) der hydrostatischen Kolbenmaschine (1) fest verbunden ist eine erste Gruppe von Kolben (10) sowie eine zweite Gruppe von Kolben (12), wobei die erste Gruppe von Kolben (10) in die Zylinderausnehmungen der ersten Zylindertrommeleinheit (11, 14) und die Kolben (12) der zweiten Gruppe in Zylinderausnehmungen der zweiten Zylindertrommeleinheit (12, 15) eingreifen. Die von den Kolben (10; 12) und Zylindertrommeleinheiten (11, 14; 12, 15) ausgebildeten ersten bzw. zweiten Zylinderräume sind mit einem ersten hydraulischen Kreislauf bzw. einem zweiten hydraulischen Kreislauf verbindbar ...

Reciprocating engine for use as pump, compressor or expansion motor, has housing with circular cylindrical segment-shaped hollow space, inlet- and outlet valves and pivotal dual piston plates that limits variable working spaces

The reciprocating engine has a housing (3) with circular cylindrical segment-shaped hollow space, inlet valves (18a-18c) and outlet valves (19a-19c) and pivotal dual piston plates (1,2) that limits the variable working spaces. The dual piston plates are arranged parallel to each other and are driven in a set direction in a synchronous manner. The housing is formed of two or multiple housing parts (3a,3b). The dual piston plates are assigned to each housing part.

Hydraulic and pneumatic drive system

A hydraulic or pneumatic drive system is provided. The drive system comprises a pressure generation and fluid transmission system; and a fluid motor 12; 112; 212; 312. The fluid motor comprises: a first cylinder means 28; 207a,b; a piston means 26; 126; 226; 326, wherein the first cylinder means and a first end of the piston means located in the first cylinder means define a first chamber 34a, 34b; 134a, 134b, and wherein the pressure generation and transmission system is coupled to the first cylinder means to cause alternating flow of fluid into and out of the first chamber thereby to cause reciprocating movement of the piston means; motion conversion means comprising a non-linear part 193; 215 extending continuously and circumferentially around a central axis; and a linking means 190; 208a, 208b engaged with the non-linear part, wherein the non-linear part and the linking means are relatively rotatable about the central axis and a one of which is coupled to and fixedly disposed relative ...

Rotary engine

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Coolant subsystem for a torpedo propulsion system

A coolant subsystem for a torpedo propulsion system having an external costion expansion engine. The coolant subsystem includes a valve which provides for one-way flow through the coolant subsystem. Inclusion of the valve prevents a backflow of exhaust gas into the coolant subsystem, thereby reducing the risk of torpedo failure due to engine overheating when the torpedo is launched in shallow water.

Cradle bearing arrangement for axial piston hydraulic devices

Arcuate bearings are useful, for example, in pivotally supporting a cradle swashplate of axial piston variable displacement hydraulic devices. The bearings of known hydraulic devices have either been a pair of laterally spaced roller bearings assembly or a pair of laterally spaced sleeve bearings. The subject hydraulic device includes a roller bearing assembly positioned between the swashplate and the housing at the side of the swashplate subjected to high loads and a less expensive sleeve bearing positioned between the swashplate and the housing at the other side of the swashplate subjected to low loads. By using this combination of bearings, the overall cost of the hydraulic device is reduced without impairing the operation of the hydraulic device.

Compressors

Compressors may preferably include a swash plate coupled to a drive shaft, so that the swash plate will rotate in response to rotation of the drive shaft. A piston is preferably disposed within a cylinder bore. A shoe preferably couples the piston to the swash plate, so the piston will reciprocate within the cylinder bore in order to compress a refrigerant in response to rotation of the swash plate. The shoe preferably comprises a main body, a metallic hard layer at least partially disposed on the main body and an anti-friction layer at least partially disposed on the metallic hard layer. The main body preferably comprises a spherical surface portion and a substantially flat surface portion and comprises aluminum. The metallic hard layer preferably has a hardness of at least HV 300 based upon the Vickers hardness scale and is disposed on at least one of the spherical surface portion and the substantially flat surface portion. The anti-friction layer preferably comprises a metal and a solid ...

Axialkolbenmaschine mit hydrostatischer Auflage des Niederhalters

Eine Axialkolbenmaschine umfasst ein Gehäuse (1), welches eine Hubscheibe (3) sowie eine drehbar gelagerte Zylindertrommel (6) mit Zylindern (26, 28) und in diesen hin- und herbewegbare Kolben (29) aufnimmt, deren aus den Zylindern (26, 28) herausragenden Enden sich über Gleitfläche (31) einer Gleitscheibe (32) an der Hubscheibe (3) abstützen, sowie einen Niederhalter (36), durch welchen die Gleitfläche (31) in Anlage an der Gleitscheibe (32) gehalten werden. Ein in einem Druckraum (40) unter den Gleitschuhen (31) herrschender Druck kompensiert über eine Verbindungsdrossel (43) teilweise einen durch den Niederhalter (36) auf die Gleitschuhe (32) ausgeübten Druck.

KOLBENMASCHINE

PISTON AND CYLINDER DEVICES

A mechanism with helicoidal planes for increasing the power efficiency of a driving shaft

The mechanism with helicoidal inclined planes according to the present invention is particularly adapted for increasing the power of the driving shaft of a motor e.g. an internal or external combustion motor or an electric motor. For this purpose said mechanism exploits a rotary-translation motion of masses (M1, M2) in an unstable equilibrium, the rotary motion thereof around the translation axis taking place along helicoidal planes with different inclinations. Shaft (4) is caused to turn through 180 DEG as a result of rollers (15) carried by an integral member (11) rolling up a helicoidal plane (AC) inside a cylinder (2), after which a roller (16) on cylinder (2) engages a helicoidal plane (A2 C2) on member (11) for rotation through a further 50 DEG . For the next 180 DEG , the rollers (15) roll down a helicoidal plane (DG) inside cylinder (2). The differences in inclination of the helicoidal planes result in a positive torque difference being generated which is transmitted to the driving ...

MECHANISM WITH HELICOIDAL PLANES FOR INCREASING THE POWER OF A DRIVING SHAFT

Method and device for converting heat energy into mechanical energy

Method and device for converting heat energy into mechanical energy

PISTON AND CYLINDER DEVICES

The invention relates to piston-and-cylinder devices having an output member adapted to drive vehicles, generators or other mechanical arrangements. The device may in its simplest form comprise a cylinder including a chamber at least one piston having an exterior cylindrical surface, and which is adapted to partake of a motion having a component of movement lengthwise of the cylinder and a rotatable output member. There are also provided cam means comprising a first cam part and a second cam part, one of said cam parts being a cam track arrangement formed for example in the piston surface and the other being a cam follower means formed on the inside surface of the cylinder and adapted to engage said track arrangement, the construction and operation being such that said cam means operates to impart to the motion of the piston a rotational component of movement and such that rotary motion produced in the output member is derived from said rotary component of movement of the piston motion.

AXIAL PISTON MACHINE, IN PARTICULAR AN AXIAL PISTON PUMP OR AN AXIAL PISTON MOTOR

... 2141812 9403708 PCTABS00030 An axial piston machine of the axial piston pump or motor type, having a first subassembly (1), including a plurality of circumferentially spaced cylinder-piston units (2) around a central axis (3), a second subassembly (29) rotatable in relation to the first subassembly in a force-transmitting manner with the cylinder-piston units in a coupling plane (30) at a predetermined angle to the central axis, wherein one of these subassemblies is rotatably arranged within a housing (10) and coupled with rotational drive means, with the driving subassembly including two spaced first bearings (33, 34) that act at least substantially in a radial direction and a swivel-joint type second bearing (35) having a pivot center (36) located at about the mid point of the center-to-center distance between the two first bearings, with this type of construction being applicable to swash-plate, skew-plate and skew-drum type machines.

ENGINE WITH ROTATING CYLINDER WALL

Combustion chamber for large gas engine

Provided is a combustion chamber applied in a gas engine including: a main combustion chamber including, at a central portion of its ceiling, an auxiliary combustion chamber; and a piston. A peripheral portion of a top surface of the piston is a flat surface. A raised portion, which has a curved surface and which is a solid of revolution, is formed at a central portion of the top surface, the raised portion being joined to the flat surface of the peripheral portion via a curved surface. When the piston is positioned at a top dead center, nozzle holes of the auxiliary combustion chamber jet out flame jets to a portion at which the raised portion of the top surface of the piston and the flat surface of the peripheral portion of the top surface of the piston are joined together.

HYDRAULIC PUMP/MOTOR AND METHOD OF SUPPRESSING PULSATION OF HYDRAULIC PUMP/MOTOR

A method of suppressing a pulsation of axial type hydraulic pump/motor includes performing a pressure accumulation operation in which each of ports of each of two pressure accumulation oil passages exclusively communicates with a corresponding one of communication holes and pressure inside one of the cylinder bores is accumulated in a corresponding one of the pressure accumulation oil passages through the communication hole in two levels, the communication holes being provided for each of the cylinder bores to communicate with inside of each of the cylinder bores and having opening portions sliding on the respective ports with rotation of the cylinder block to communicate with the respective ports; and performing an accumulated pressure collection operation in which the pressure accumulated in the pressure accumulation oil passage is collected in one of the cylinder bores in two levels. 1. An axial type hydraulic pump/motor in which a cylinder block provided with a plurality of cylinder bores slides on a valve plate provided with suction and delivery ports and pistons reciprocate inside the respective cylinder bores to rotate an output shaft or an input shaft rotates to discharge hydraulic oil from the suction and delivery ports , the hydraulic pump/motor comprising:two pressure accumulation oil passages which accumulate pressure in two connected passages that are obtained in a manner such that, among two pairs of ports provided on the valve plate and provided at a top dead center side and a bottom dead center side outside a slide and rotation trajectory area of the cylinder bores, a top dead center side port on a front side in a rotation direction of the cylinder block is connected to a bottom dead center side port on the front side in the rotation direction and a top dead center side port on a rear side in the rotation direction is connected to a bottom dead center side port on the rear side in the rotation direction,wherein the cylinder block includes two ...

AXIAL PISTON MACHINE

An axial piston machine includes a housing having a casting which is optimized with respect to casting. An insert ring which is optimized with respect to a pressure load is formed in the bottom of the housing. The insert ring is configured to be used with such an axial piston machine. 1. An axial piston machine , comprising:a pump housing;at least one cylinder barrel mounted in the pump housing and having a multiplicity of pistons each delimiting a working space and being supported on an adjustable swashplate;a control disk arranged at an end in the pump housing and configured to alternately connect the working space to a low-pressure and a high-pressure duct;a drive shaft configured to connect to the at least one cylinder barrel to rotate conjointly; and the housing is approximately cup-shaped with a cup bottom formed in sections by the insert ring;', 'the high-pressure duct section has an axial orifice region on the control-disk side and has a radial or axial orifice region on the high-pressure duct side; and, 'an insert ring, on which the drive shaft is mounted and in which a high-pressure duct section is formed, whereinthe insert ring is optimized for pressure loading by configuration, selection of material or production method.2. The axial piston machine as claimed in patent claim 1 , wherein the insert ring is inserted into a socket in the housing claim 1 , the socket having a diameter which is significantly larger than a diameter of the drive shaft.3. The axial piston machine as claimed in patent claim 1 , wherein the insert ring is formed by one of a nitrided steel casting claim 1 , heat-treated spheroidal graphite iron casting and forging or is produced from a solid part by machining.4. The axial piston machine as claimed in patent claim 1 , further comprising a low-pressure duct section having at least one of a radial orifice region and an axial orifice region claim 1 , the low-pressure duct section formed in the insert ring.5. The axial piston machine as ...

Hydraulic Axial Piston Machine

A hydraulic axial piston machine includes a drive shaft, a swashplate pivotable about a pivot axis to change inclination relative to a drive shaft axis, and an actuating piston approximately parallel to the drive shaft axis. The actuating piston has a first end which engages and adjusts the swashplate and a second end which bounds an actuating chamber. Fluid flows to the actuating chamber to pivot the swashplate one direction and is forced out of the actuating chamber when the swashplate pivots the other direction. A return element on the actuating piston incorporates a position of the actuating piston and thus the inclination of the swashplate into a control valve. The return element is positioned such that its longitudinal axis and an actuating piston longitudinal axis span a plane that differs from a plane perpendicular to the pivot axis. 1. A hydraulic axial piston machine comprising:a housing;a drive shaft rotatably mounted in the housing and having a drive shaft axis;a swashplate configured to pivot about a pivot axis to vary an inclination relative to the drive shaft axis, the swashplate having a central plane which is perpendicular to the pivot axis and extends through the drive shaft axis; a first end configured to engage on the swashplate to adjust the swashplate; and', 'a second end configured to delimit an actuating chamber into which control fluid flows to pivot the swashplate in one direction and out of which control fluid is displaced when the swashplate pivots in the other direction; and, 'an actuating piston with an actuating piston longitudinal axis, the actuating piston extending with the actuating piston longitudinal axis spaced apart from the central plane of the swashplate, and at least approximately parallel to the axis of the drive shaft, the actuating piston including 'the feedback element has a feedback element longitudinal axis and is positioned such that the feedback element longitudinal axis and the actuating piston longitudinal axis ...

Axial Piston Machine having a Retraction Plate, and Method for the Production Thereof

An axial piston machine comprises a cylinder drum in which a multiplicity of pistons are arranged in a longitudinally displaceable manner. The pistons are supported, via sliding blocks, on a running surface which is inclined relative to the cylinder drum axis. The sliding blocks are held, at that side thereof which faces away from the running surface, by means of a retraction plate. The retraction plate is produced from processed sheet metal in a non-cutting punching and stamping process. 1. An axial piston machine comprising:a cylinder drum;a plurality of pistons arranged longitudinally displaceably in the cylinder drum; anda retraction plate produced from a refined metal sheet, without cutting, in a stamping/embossing operation,wherein the plurality of pistons are supported via sliding shoes on a running surface inclined with respect to a drum axis of the cylinder drum, andwherein the sliding shoes are held, so as to bear against the running surface by means of the retraction plate on a retention surface facing away from their sliding surface bearing against the running surface.2. The axial piston machine as claimed in claim 1 , wherein the retraction plate has a region in the form of an envelope of a cone frustum which is shaped such that claim 1 , in a nonloaded state claim 1 , a distance of the retraction plate at its outer circumference from the running surface is shorter than in a region of a retraction plate bearing.3. The axial piston machine as claimed in claim 1 , wherein a circumferential edge runs in each case partially parallel to an outer region of a sliding shoe reception orifice in each case.4. The axial piston machine as claimed in claim 1 , wherein the retraction plate bearing includes a spherical cap in the retraction plate.5. The axial piston machine as claimed in claim 4 , wherein a diameter of the spherical cap and a diameter of the sliding shoe reception orifices are equal.6. A method for the production of a retraction plate for an axial ...

PISTON MACHINE

The invention relates to a piston machine comprising two (or more) housing parts (), which are each in the shape a circular cylinder segment, but which are joined to each other in such a way that the housing parts are rotated 180° with respect to each other, and which enclose a common cavity and each have a dual piston plate (), wherein the dual piston plates are associated with the respective housing part and driven separately and synchronously in opposite directions. The dual piston plates, together with the respective adjacent angled side wall () of the housing part, the side wall having inlet and outlet valves (), define two outer working chambers (A and A) and one (or more) inner working chambers (A) are defined between the dual piston plates (), the one or more inner working chambers having inlet and outlet valves () formed in a rear housing wall () at the height of an imaginary separating line X between the housing parts (). The piston machine thus formed, which can be operated as a pump, compressor, or expansion motor or as a combination thereof, is characterized by variable, efficient usage possibilities, a low dead volume, a correspondingly high efficiency, a compact and space-saving construction associated with low component expense, and a mass balance that is optimal due to the opposite synchronous drive of the dual piston plates offset by 180° from each other together with smooth running and correspondingly long service life. 118191819333312271516121227341819181913333aabbabcccddabc. A piston machine which comprises a housing having a substantially circular-cylinder-segment-like hollow space and first and second inlet and outlet valves ( , ; , ) which are provided on the inclined side walls and a pivotable dual piston plate which delimits variable operating spaces and which is connected to a rotary cylinder which is supported in the housing and which is driven by means of a crankshaft journal which is guided in a connection rod loop , wherein the housing ...

3-STROKE/6-STROKE ROCKET JET ENGINE

The present invention has an object to provide an engine and a pump useful in three-stroke/six-stroke rocket/jet engine pump and the like in each of a speed volume type and an isokinetic circular rotation internal combustion engine type which operates only by isokinetic circular rotation similarly to a jet engine, has no pressure leakage, has all the increased/decreased pressures immediately work as a rotation torque and is excellent in super-high speed and super-low speed limitation performance, silence and fuel-cost saving performances. 112-. (canceled)13. An engine or a pump comprising at least:a housing (A) having a cylinder space;an output shaft unit (B) composed of one or two or more pistons, a ring disk, and an output disk capable of an isokinetic circular rotation in said cylinder space;a rotor (C) capable of the isokinetic circular rotation at a constant rotation specific speed with respect to the rotation of said piston;a rotor guide (D) having the same center as said output shaft unit (B) and in charge of the inside of said cylinder, having a recess surface contact holding portion with said rotor (C) and a planar contact outer peripheral surface with said piston, and supporting the center of said output shaft unit (B) and said rotor (C) making the isokinetic circular rotation; anddriving means (E) giving an operation to said piston, whereinthe cylinder of said housing (A) has a notch portion for sealing in planar contact with a part of the outer peripheral surface of said rotor (C) at a part of the inner peripheral wall surface thereof;a piston of said output shaft unit (B) is configured such that its outer peripheral surface makes the isokinetic circular rotation while in planar contact with the inner peripheral wall surface of said cylinder; andthe rotor (C) has a piston accommodating portion for accommodating the piston during the rotation thereof and is configured to engage with the piston and to rotate while a distal end of the piston accommodating ...

SWASH PLATE-TYPE MOTOR

On a near-bottom inner surface of a tilt piston cylinder hole, only a limited part that contacts an end of a tilt piston when the tilt piston is tilted by a pressing force from a swash plate is laser-hardened along the circumferential direction of the tilt piston cylinder hole (i.e., a hardened part is formed). In the tilt piston cylinder hole, parts other than a near-opening inner surface and the near-bottom inner surface are not laser-hardened. 1. A swash plate-type motor comprising:an output shaft provided to be rotatable with respect to a main body casing;a cylinder block engaged with the output shaft;pistons provided in cylinder holes formed in the cylinder block, respectively;a swash plate configured to contact the pistons;a tilt piston configured to change a tilt angle of the swash plate by pressing the swash plate; anda tilt piston cylinder hole formed in the main body casing to slidably support the tilt piston,on a near-bottom inner surface of the tilt piston cylinder hole, a limited part that contacts an end of the tilt piston when the tilt piston is tilted by a pressing force from the swash plate being laser-hardened, andthe tilt piston cylinder hole being not laser-hardened except at a near-opening inner surface and the near-bottom inner surface.2. The swash plate-type motor according to claim 1 , wherein claim 1 ,the near-bottom inner surface is laser-hardened in a circumferential direction, and a degree of laser-hardening is gradually increased toward the limited part.3. The swash plate-type motor according to claim 2 , wherein claim 2 ,on the near-bottom inner surface, an opposing part opposing the limited part is not laser hardened, whereas parts other than the opposing part are continuously laser hardened.4. The swash plate-type motor according to claim 2 , wherein claim 2 ,an entirety of a circumference of the near-bottom inner surface is laser-hardened.5. The swash plate-type motor according to claim 3 , wherein claim 3 ,on the near-bottom inner ...

RESONANT MECHANISM FOR LINEAR COMPRESSORS

The present invention relates to a resonant mechanism for compressors which comprises a tubular body (1) containing at least two slot sets (12) that delimit an intermediate surface (13) which central portion has substantially ellipsoidal conformation (14) on which it is located a hole (15) through which the resonant spring will be affixed (2); a resounding spring (2) housed within the tubular body (1); at least two fastening sets (3) for fastening the resonant spring (2) to the tubular body (1), and leaf flat springs (4) alternately and successively mounted with spacers (not shown) along with the circular side faces (11) of the tubular body (1). The slot sets (12) have a specific configuration to allow rigidity and flexibility suitable for the mechanism operation in situations where the resulting axial force differs from zero. 1. Resonant mechanism for linear compressors CHARACTERIZED in that it comprises:{'b': '1', 'a tubular body ();'}{'b': 2', '1, 'a resonant spring () housed within the tubular body (); and'}{'b': 1', '12', '13', '2, 'the tubular body () comprising at least one slot set () that delimits an axially flexible surface () where it is provided an fastening point for the resonant spring ().'}221212132. Mechanism according to claim 1 , CHARACTERIZED in that it comprises at least two fastening points opposite to each other for the resonant spring () claim 1 , the mechanism comprising two slot sets () claim 1 , wherein each set () delimits a transversely resilient surface () where it is provided each of the two fastening points for the resonant spring ()3321. Mechanism according to or claim 1 , CHARACTERIZED in that it comprises at least one fastening set () for fastening the resonant spring () to the tubular body ().43312123511131. Mechanism according to claim 3 , CHARACTERIZED in that the fastening set () comprises an inner male fastening element () that is provided in an fastening hole () of the resonant spring () claim 3 , and an outer female fastening ...

HYDROSTATIC AXIAL PISTON MACHINE

A hydrostatic axial piston machine of swash plate design includes a pivot cradle configured to be pivoted by a regulating valve. The movement of the pivot cradle is fed back to the regulating valve via a return spring. The return spring is attached to the pivot cradle in the region between its end section on the regulating-valve side and an end section which is remote from the regulating valve. 1. A hydrostatic axial piston machine of swash plate design , comprising:an adjusting device configured to adjust the pivoting angle of a pivot cradle;one or more of a counterpiston of a countercylinder and an actuating piston of an actuating cylinder configured to act on said pivot cradle,wherein the pivoting angle is configured to be adjusted by a regulating valve, the regulating valve having a valve slide configured to be loaded via a return spring with a returning force that is dependent on the pivoting angle, andwherein the return spring is attached to said pivot cradle in the region between its end section on the regulating-valve side and the end section which is remote from the regulating valve.2. The hydrostatic axial piston machine according to claim 1 , wherein the return spring is attached indirectly to the pivot cradle.3. The hydrostatic axial piston machine according to claim 1 , wherein the return spring is supported on a spring sleeve.4. The hydrostatic axial piston machine according to claim 3 , wherein the pivot cradle is connected to the spring sleeve in a non-positive or positively locking manner by a driver.5. The hydrostatic axial piston machine according to claim 4 , wherein the spring sleeve is prestressed via a bearing spring in the direction of its bearing position against the driver.6. The hydrostatic axial piston machine according to claim 5 , wherein the bearing spring is arranged coaxially with respect to the return spring.7. The hydrostatic axial piston machine according to claim 6 , wherein the return spring and the bearing spring overlap one ...

TRACTION-TYPE ACTUATOR

A traction-type actuator includes a frame, a first actuating unit, a second actuating unit, a rotatable member and a traction member. The rotatable member is disposed on the frame. The first actuating unit and the second actuating unit are located at two sides of the rotatable member. The traction member has a strip shape and can be curved and wound. The traction member has two ends fixed to the frame and is in a tightened state. The traction member winds through the first actuating unit, and then winds on the rotatable member, and finally winds through the second actuating unit. When the first actuating unit is actuated, the second actuating unit will be towed, vice versa, the first actuating unit and the second actuating unit are push-pull by the traction member so that the rotatable member is turned clockwise and counterclockwise. 1. A traction-type actuator , comprising:a frame;a first actuating unit comprising a first immovable member and a first movable member, the first immovable member being disposed at a first end of the frame, the first movable member being movable relative to the first immovable member, the first movable member having at least one first turning unit;a second actuating unit comprising a second immovable member and a second movable member, the second immovable member being disposed at a second end of the frame, the second movable member being movable relative to the second immovable member, the second movable member having at least one second turning unit;a rotatable member disposed on the frame, the first actuating unit and the second actuating unit being respectively located at two sides of the rotatable member; anda traction member, the traction member having a strip shape and being able to be curved and wound, the traction member having a first connecting end fixed to the first end of the frame, the traction member winding through the at least one first turning unit and the first immovable member and then winding on the rotatable member ...

HYDRAULIC MOTOR

A hydraulic motor includes a motor mechanism that rotates by hydraulic liquid that is supplied/discharged from a hydraulic liquid pressure source through one of a first motor passage and a second motor passage. The hydraulic motor comprises a casing that defines a casing chamber which accommodates the motor mechanism, and a flushing passage that is in communication with the casing chamber and extracts a portion of the hydraulic liquid from a low pressure side among the first motor passage and the second motor passage and leads it to the casing chamber. 1. A hydraulic motor equipped with a motor mechanism that is configured to rotate by hydraulic liquid that is supplied/discharged from a hydraulic liquid pressure source through one of a first motor passage and a second motor passage , comprising:a casing that defines a casing chamber which accommodates the motor mechanism, anda flushing passage that is in communication with the casing chamber and extracts a portion of the hydraulic liquid from a low pressure side among the first motor passage and the second motor passage and leads it to the casing chamber.2. The hydraulic motor according to claim 1 , wherein the motor mechanism includes:a swash plate provided in the casing chamber,a plurality of pistons that are configured to move back and forth following the swash plate by hydraulic liquid pressure,a cylinder block that is configured to rotate relative to the swash plate by the back-and-forth motion of the pistons, andan output shaft that is configured to output the rotation of the cylinder block,wherein the casing includes:a base plate in which the first motor passage and the second motor passage are provided, anda case that supports the output shaft and defines the casing chamber together with the base plate, andwherein the flushing passage is defined by a base-side flushing through hole that is formed in the base plate and a case-side flushing through hole that is formed in the case and is in communication with ...

ROTARY DRIVE SYSTEM HAVING A CAM FOLLOWER WITH DETACHABLE WHEEL SUPPORT

A rotary drive system includes a cylinder wall, a piston axially slidable along a longitudinal axis within the cylinder wall and a piston rod extending along the longitudinal axis and projecting at a drive side of the system axially beyond the cylinder wall. The piston rod is at the drive side attached to a carrier support member. A rotatable annular cam member extends at an axial cam position that is spaced at a distance from the drive side, coaxially around the cylinder wall. A carrier carries at a support side a pair of rollers engaging on opposed cam surfaces of the cam member, the carrier extending radially outwardly from the cylinder wall from the cam position to the carrier support member and being with a connecting end detachably connected to the carrier support member. The carrier includes an arm provided with a flexible section. 1505144512020202059515775515541abbab. Rotary drive system () comprising a cylinder wall () , a piston ( ,′) axially slidable along a longitudinal axis (L) within the cylinder wall () and a piston rod ( ,′) extending along the longitudinal axis and projecting at a drive side (D) of the system axially beyond the cylinder wall , the piston rod ( ,′) at the drive side being attached to a carrier support member () , a rotatable annular cam member () extending at an axial cam position that is spaced at a distance from the drive side (D) , coaxially around the cylinder wall () , a carrier () carrying at a support side a pair of rollers ( ,′) engaging on opposed cam surfaces of the cam member , the carrier () extending radially outwardly from the cylinder wall () from the cam position to the carrier support member () and being with a connecting end detachably connected to the carrier support member , the carrier () comprising an arm that is provided with a flexible section ().2505645577942525153545bb. Rotary drive system () according to claim 1 , a housing () having an axial housing part () extending radially outwardly from the carriers () ...

AXIAL PISTON MOTOR AND METHOD FOR OPERATION OF AN AXIAL PISTON MOTOR

To provide an axial piston motor, comprising at least one main burner, which has at least one main combustion space and at least one main nozzle space, and comprising at least one pre-burner, which has at least one pre-combustion space and at least one pre-nozzle space, wherein the pre-combustion space is connected to the main nozzle space by way of at least one hot gas feed, that has improved operating and control characteristics even under non-steady-state operating conditions, the pre-nozzle space of the pre-burner has at least one auxiliary hot gas feed. 1. Axial piston motor having a heat exchanger that has an exhaust gas stream and a working gas stream separated from the exhaust gas stream , and transfers heat from the exhaust gas stream to the working gas stream , wherein the heat exchanger has a longitudinal axis , wherein the heat exchanger has a working gas chamber that runs along the longitudinal axis , and wherein the heat exchanger has an exhaust gas chamber that runs along the longitudinal axis , and wherein a housing of the heat exchanger , the working gas chamber and/or the exhaust gas chamber are mechanically coupled with one another , rigidly at a first end of their longitudinal expanse and elastically at a second end of their longitudinal expanse.2. The axial piston motor according to claim 1 , wherein the elastic coupling has a metallic membrane.3. The axial piston motor according to claim 2 , wherein the elastic membrane seals the working gas chamber claim 2 , the exhaust gas chamber and/or the housing of the heat exchanger relative to one another and relative to the environment.4. The axial piston motor according to claim 2 , wherein a working gas chamber entry passes through the membrane claim 2 , which entry leads a working gas cold stream into the heat exchanger.5. The axial piston motor according to claim 1 , wherein the elastic coupling is provided on a cold side of the heat exchanger.6. The axial piston motor according to claim 1 , ...

VARIABLE STROKE PUMP

A variable stroke high pressure pump is disclosed. The pump uses a wobble plate design with dynamically variable tilt to provide continuous adjustment of pump stroke length and output. Dynamically variable tilt is accomplished using a linearly actuated tilt thruster rotationally coupled to the drive shaft to maintain a selected tilt of the wobble plate through the rotation of the wobble plate. 1. A pump , comprising:a drive shaft;a wobble plate attached to the drive shaft by a swivel mount to rotate with the drive shaft;a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod coupled to a first surface of the wobble plate and the second end of each displacement rod connected with a plunger; anda tilt actuator assembly slidably attached to the drive shaft to rotate with the drive shaft, the tilt actuator assembly comprising a slider coupled to a linear actuator and a thruster coupled to the slider and extending toward a second surface of the wobble plate opposite the first surface.2. The pump of claim 1 , further comprising a thrust bearing between each displacement rod and the wobble plate.3. The pump of claim 1 , wherein the swivel mount is ball-shaped.4. The pump of claim 3 , wherein the wobble plate is attached to the drive shaft using a key.5. The pump of claim 4 , further comprising a retainer plate that contacts the wobble plate and the swivel mount.6. The pump of claim 1 , further comprising a bearing plate between the wobble plate and the fluid manifold claim 1 , the bearing plate having a bore for each displacement rod and a bearing disposed in each bore.7. The pump of claim 1 , wherein the slider is a crosshead attached to the drive shaft by a guide ring.8. The pump of claim 1 , wherein the linear actuator comprises a hydraulic actuator.9. The pump of claim 1 , further comprising a thrust bearing between the linear actuator and the slider.10. A pump claim 1 , comprising:a drive shaft ;a wobble ...

SWASH PLATE BEARING

A swash plate bearing is disclosed. The swash plate bearing may have an arcuate cage member having at least one flange and a plurality of rolling elements rotatably coupled to the at least one flange. A coupling seat extends laterally from the at least one flange, the coupling seat may have an insertion hole. A link member may be rotatably coupled to the cage member, the link member having a central portion positioned between a first terminal portion and a second terminal portion. A first stem connects the central portion to the first terminal portion and a second stem connects the central portion to the second terminal portion. The central portion is positioned in the insertion hole. 115-. (canceled)1610. A swash plate bearing () comprising:an arcuate cage member having at least one flange and a plurality of rolling elements rotatably coupled to the at least one flange wherein a coupling seat extends laterally from the at least on flange, the coupling seat having an insertion hole; anda link member rotatably coupled to the cage member, the link member having a central portion positioned between a first terminal portion and a second terminal portion wherein a first stem connects the central portion to the first terminal portion and a second stem connects the central portion to the second terminal portion and wherein the central portion is positioned in the insertion hole.17. The swash plate bearing of claim 16 , wherein the coupling seat is annular and the insertion hole is centrally positioned.18. The swash plate bearing of claim 17 , wherein the diameter of the coupling seat is greater than the width of the at least one flange.19. The swash plate bearing of claim 16 , wherein opposite base portions of the coupling seat extend transversely over the at least one flange.20. The swash plate bearing of claim 16 , further comprising a pair of teeth axially extending from a rim of the coupling seat.21. The swash plate bearing of claim 20 , wherein the teeth are mutually ...

POSITIVE DISPLACEMENT MACHINES AND METHODS OF INCREASING LOAD-CARRYING CAPACITIES THEREOF

Positive displacement machines and methods therefor capable of increasing a load-carrying capacity of a piston-cylinder lubrication interface of positive displacement machines having a cylinder block, a cylindrical bore defined in the cylinder block, a piston reciprocably disposed within the cylindrical bore, and a working fluid within the piston-cylinder lubrication interface to provide a load-bearing function between the piston and the bore wall of the cylinder bore. The method includes providing at least one circumferential groove on a bore wall of the cylindrical bore within the piston-cylinder lubrication interface having an opening facing the piston and that is in fluidic communication with the piston-cylinder lubrication interface so as to contain a portion of the working fluid, and operating the positive displacement machine such that the working fluid enters the cylindrical groove and promotes hydrostatic balancing of pressure of the working fluid within the piston-cylinder lubrication interface. 1. A positive displacement machine comprising:a cylinder block adapted to be rotated about an axis of the positive displacement machine;a plurality of cylindrical bores defined in the cylinder block and surrounding the axis, each of the cylindrical bores having a bore wall and a port;a plurality of pistons reciprocably disposed within the cylindrical bores, each of the pistons defining a piston-cylinder lubrication interface with the bore wall of a corresponding one of the cylindrical bores and defining a displacement chamber within the cylindrical bore adjacent the port thereof;a working fluid located within the displacement chambers and within the piston-cylinder lubrication interfaces to provide a load-bearing function between the pistons and the bore walls of the cylinder bores; anda plurality of circumferential grooves located within the piston-cylinder lubrication interfaces, at least one of the grooves being located on the bore wall of each of the ...

Fixed shaft for hydraulic unit

A fixed shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The second end of the body has an outer diameter of 0.990±0.005 inches (2.515±0127 cm). The first and second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first and second flange having an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). The portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).

VARIABLE DISPLACEMENT HYDRAULIC UNIT AND METHOD FOR OPERATING THE HYDRAULIC UNIT

Variable displacement hydraulic unit comprising a displacement unit for setting/adjusting the position of an adjustment element in order to adjust the displacement volume of the hydraulic unit by means of an electronically driveable actuator. The actuator is electronically connected to an electronic control unit (ECU) and has a first electric conductive coil to position the adjustment element by the help of electro-magnetic forces. An electric energy harvesting device is located adjacent to the first coil of the actuator such that electric energy from power fluctuations in the first coil can be harvested inductively. The inductively harvested electric energy can be transmitted to an electric energy storage device. 1. A variable displacement hydraulic unit comprising a displacement unit for setting/adjusting the position of an adjustment element in order to adjust the displacement volume of the hydraulic unit by means of an electronically driveable actuator , wherein the actuator comprises a first electric conductive coil to position the adjustment element by the help of electro-magnetic forces , and is electronically connected to an electronic control unit (ECU) , wherein a second conductor is located adjacent to the first coil of the actuator such that electric energy from power fluctuations in the first coil can be harvested inductively and , the inductively harvested electric energy can be transmitted to an electric energy storage device.2. The hydraulic unit according to claim 1 , wherein the second conductor is a second electric conductive coil surrounding claim 1 , being surrounded by or being integrated in the first coil of the actuator.3. The hydraulic unit according to claim 1 , wherein the electric energy storage device is an electric capacitor claim 1 , an accumulator or a rechargeable battery.4. The hydraulic unit according to claim 1 , further comprising a sensor supplied with electric power by the electric energy storage device.5. The hydraulic unit ...

AXIAL PISTON MACHINE

An axial piston machine may include a rotor having a shaft rotatably mounted in a housing. A plurality of cylinders may be arranged annularly around the rotor. A plurality of pistons may each be disposed within each of the plurality of cylinders and may be constructed and arranged to selectively translate within each of the plurality of cylinders. Each of the plurality of cylinders may be disposed within a cylinder head and may be in operative communication with an inlet opening defined in the cylinder head and at least one outlet opening defined in the housing. An auxiliary outlet rotary slide valve may be operatively connected to the shaft in a rotationally fixed manner. The auxiliary outlet rotary slide valve may comprises an auxiliary outlet rotary opening constructed and arranged to connect to a vent duct of one of the plurality of cylinders based on an angle of rotation, and may vent the one of the plurality of cylinders. At least a portion of the auxiliary outlet rotary slide valve may comprise a material constructed and arranged to reduce a sliding friction resistance, and wherein the material comprises one of a carbon containing material or a polymer containing material. 1. An axial piston machine comprising:a rotor having a shaft rotatably mounted in a housing;a plurality of cylinders arranged annularly around the rotor;a plurality of pistons each disposed within each of the plurality of cylinders and constructed and arranged to selectively translate within each of the plurality of cylinders;wherein each of the plurality of cylinders are disposed within a cylinder head and are in operative communication with an inlet opening defined in the cylinder head and at least one outlet opening defined in the housing;an auxiliary outlet rotary slide valve operatively connected to the shaft in a rotationally fixed manner, wherein the auxiliary outlet rotary slide valve comprises an auxiliary outlet rotary opening constructed and arranged to connect to a vent duct of ...

AXIAL PISTON MACHINE

An axial piston machine may include a rotor with a shaft. A plurality of cylinders may be arranged in an annular manner about the shaft. A plurality of pistons may each be positioned within each of the plurality of cylinders and may be constructed and arranged to move translationally within the plurality of cylinders. A cylinder head may include a plurality of inlet openings and may be in operative communication with the plurality of cylinders. A sealing washer having a plurality of passage openings may be disposed on the cylinder head so that the plurality of passage openings and the plurality of inlet openings may be flush with one another. A number of the plurality of inlet openings may correspond to a number of the plurality of passage openings. A valve plate may be connected to the shaft in a rotationally fixed manner and may be constructed and arranged to be brought into congruence with the plurality of passage openings of the sealing washer based on a rotary angle. The sealing washer may be disposed between the plurality of inlet openings and the valve plate and may be prestressed against the cylinder head and onto the inlet openings. 1. An axial piston machine comprising:a rotor with a shaft;a plurality of cylinders arranged in an annular manner about the shaft;a plurality of pistons constructed and arranged to move translationally within the plurality of cylinders;a cylinder head having a plurality of inlet openings, wherein the plurality of cylinders are in operative communication with the plurality of inlet openings;a sealing washer having a plurality of passage openings disposed on the cylinder head so that the plurality of passage openings and the plurality of inlet openings are flush with one another, and wherein a number of the plurality of inlet openings corresponds to a number of the plurality of passage openings;a valve plate connected to the shaft in a rotationally fixed manner, the valve plate constructed and arranged to be brought into ...

HYDRAULIC MACHINE, IN PARTICULAR HYDRAULIC PRESSURE EXCHANGER

A hydraulic machine () is shown, in particular a hydraulic pressure exchanger, comprising a drum () rotatable about an axis, a front plate arrangement having a front plate () and a pressure shoe (), said drum () comprising a plurality of working cylinders (), each working cylinder () having a front opening, during rotation of this drum (), said front opening sliding over said pressure shoe () along a path, said pressure shoe () having at least two kidney-shaped openings, said kidney-shaped openings being arranged in said path. A hydraulic machine should be operated with low noise. To this end said pressure shoe () is arranged between said drum () and said front plate () and comprises at least a pressure cylinder () arranged between two neighboring kidney-shaped openings, a piston () being arranged in said pressure cylinder (), said piston () resting against said front plate (), said pressure cylinder () being connected with a supply opening () in a side of the pressure shoe () opposite said front plate (), said opening () at least partly overlapping said path. 1. A hydraulic machine , in particular hydraulic pressure exchanger , comprising a drum rotatable about an axis , a front plate arrangement having a front plate and a pressure shoe , said drum comprising a plurality of working cylinders , each working cylinder having a front opening , during rotation of said drum , said front opening sliding over said pressure shoe along a path , said pressure shoe having at least two kidney-shaped openings , said kidney-shaped openings being arranged in said path , wherein said pressure shoe is arranged between said drum and said front plate and comprises at least a pressure cylinder arranged between two neighboring kidney-shaped openings , a piston being arranged in that pressure cylinder , said piston resting against said front plate , said pressure cylinder being connected with a supply opening in a side of the pressure shoe opposite said front plate , said opening at ...

Composition for Sliding Member

A composition for sliding member includes a binder resin, a solid lubricant, and an epoxy modified silicone oil having an epoxy group at both ends or at one end thereof. A weight ratio of the binder resin and the epoxy modified silicone oil is 97:3 to 75:25.

Internal combustion butterfly engine

An internal combustion butterfly engine system includes a cylindrical housing with an inner surface and an outer surface; a first snitch having a first cylindrical body and a first two tabs extending away from the first cylindrical body; and a second snitch having a second cylindrical body and a second two tabs extending away from the second cylindrical body; the first snitch and second snitch are secured within the cylindrical housing, the first two tabs and the second two tabs creating four chambers within the cylindrical housing.

HYDRAULIC ROTARY MACHINE

A piston pump/motor includes a cylinder block rotated with a shaft; a piston slidably inserted into a cylinder that is formed on the cylinder block; a shoe rotatably connected to a tip end portion of the piston, the shoe being in sliding contact with the tip end portion; and a swash plate with which the shoe is in sliding contact. The shoe has a piston slide portion in sliding contact with the piston and a swash-plate slide portion in sliding contact with the swash plate; a shoe body portion on which the piston slide portion and the swash-plate slide portion are mounted; and a first lock portion and a second lock portion provided across the shoe body portion, and the piston slide portion and the swash-plate slide portion, respectively, the first lock portion and the second lock portion regulating relative rotation between the shoe body portion, and the piston slide portion and the swash-plate slide portion. 1. A hydraulic rotary machine comprising:a cylinder block to which a shaft is connected, the cylinder block being configured to be rotated with the shaft;a plurality of cylinders formed on the cylinder block, the plurality of cylinders being disposed at a predetermined interval in a circumferential direction of the shaft;a piston slidably inserted into the cylinder, the piston defining a volume chamber inside the cylinder;a shoe rotatably connected to a tip end portion of the piston, the shoe being in sliding contact with the tip end portion; and the shoe has', 'a slide portion made of resin provided on at least either one of a portion in sliding contact with the piston and a portion in sliding contact with the swash plate;', 'a shoe body portion on which the slide portion is mounted; and', the lock portion has', 'a dent portion formed on either one of the shoe body portion and the slide portion; and', 'a projecting portion formed on the other of the shoe body portion and the slide portion, the projecting portion being locked by the dent portion., 'a lock portion ...

AXIAL PISTON MACHINE WITH OUTLET CONTROL

An axial piston machine may include a shaft and a housing surrounding at least a portion of the shaft. A cylinder arrangement may be disposed within the housing in a circular manner. The cylinder arrangement may include a plurality of cylinders and a plurality of pistons each extending within each of the plurality of cylinders and may be constructed and arranged to drive the shaft. The plurality of cylinders may each include an expansion volume with an inlet and at least one outlet opening for a working medium. A cylinder head may be provided on the housing and may be constructed and arranged to close the plurality of cylinders of the cylinder arrangement. A cavity may be defined around the shaft in a central region of the cylinder arrangement and may be in operative communication with a plurality of auxiliary outlet openings of the expansion volume of each of the plurality of cylinders via a temporary connection. A cylindrical roller slider may rotate within the cavity in the central region of the cylinder arrangement and may be constructed and arranged to drive the shaft. A temporary connection between the cavity and the expansion volume of each of the plurality of cylinders may be formed by at least one of a channel through the cylindrical roller slider and a recess on an outside surface of the cylindrical roller slider. The recess may extend laterally from a casing of the cylindrical roller slider at a height of the plurality of auxiliary outlet openings in each of the plurality of cylinders and at a distance to the cavity in the central region of the cylinder arrangement. 1. An axial piston machine comprising:a shaft;a housing surrounding at least a portion of the shaft;a cylinder arrangement disposed within the housing in a circular manner, wherein the cylinder arrangement comprises a plurality of cylinders and a plurality of pistons each extending within each of the plurality of cylinders constructed and arranged to drive the shaft, wherein the plurality of ...

Hydrostatic Axial Piston Machine of Swash Plate Design with an Adjustable Swept Volume, in particular Hydrostatic Axial Piston Pump

A hydrostatic axial piston machine includes a housing, a cylinder barrel, and a drive shaft, which are connected together and mounted in the housing so as to rotate jointly about a first axis. The machine also includes a swash plate mounted in the housing so as to pivot about a second axis to adjust a swept volume of the machine. The machine further includes a hydraulic actuating apparatus, which has an actuating piston that delimits an actuating chamber. The machine also includes a regulating valve attached to a flange face of the housing. The regulating valve has connections situated in the flange face that are used to communicate hydraulic fluid to and from the actuating chamber. The flange face is arranged obliquely so as to enclose an angle with the second axis that is greater than 0° and smaller than 90°. 1. A hydrostatic axial piston machine of swash plate design , comprising:a housing, a cylinder barrel, and a drive shaft that are (i) connected to one another such that they cannot be twisted and (ii) mounted in the housing such that they are configured to be rotated jointly about a first axis;a swash plate mounted in the housing so as to be pivoted about a second axis in order to adjust a swept volume of the hydrostatic axial piston machine;a hydraulic actuating apparatus with an actuating piston that delimits an actuating chamber, is guided rectilinearly in an actuating chamber bore of the housing, and by way of which the swash plate is configured to be pivoted; and a pressure connector which lies above a pressure opening of the housing which is arranged in the flange face,', 'a control connector which lies above a control opening of the housing which is arranged in the flange face, and', 'a tank connector which lies above a tank opening of the housing which is arranged in the flange face,, 'a regulating valve that is attached to a flange face of the housing, which flange face is arranged to a side of the actuating chamber bore, and which regulating valve ...

Axial piston device

A housing of an axial piston device is provided with a drain port for discharging the retained oil to the outside and a supply oil passage for guiding lubricating oil, which has been supplied from an oil source, toward a first hydraulic axial piston member. The drain port is arranged so as to bring about such a retained-oil level that a second hydraulic axial piston member, which is disposed below the first hydraulic axial piston member, is partially or entirely immersed in the retained oil while the first hydraulic axial piston member is not immersed in the retained oil.

Apparatus with a butterfly mechanism incorporated therein

A butterfly mechanism system includes a cylindrical housing with an inner surface and an outer surface; a first snitch having a first cylindrical body and a first two tabs extending away from the first cylindrical body; and a second snitch having a second cylindrical body and a second two tabs extending away from the second cylindrical body; the first snitch and second snitch are secured within the cylindrical housing the first two tabs and the second two tabs creating four chambers within the cylindrical housing. Both the snitches comprise of a bevel gear type mechanism and a ratchet and pawl type mechanism centered to the main output shaft.

Barrel cam driven reciprocating pump

A system for pumping and/or compressing fluids is provided. The system comprises a base, a motor, a cam configured to be rotated about an axis of rotation by the motor, and one or more cylinder piston arrangements. Each cylinder piston arrangement comprises a first member and a second member. The first member has a longitudinal axis and two ends. The first member is fixedly attached to the base. The second member is configured to be operatively coupled to the cam and to be movable along the longitudinal axis with respect to the first member and through at least of the two ends. The axis of rotation of the cam is parallel to the longitudinal axis about which the second member moves relative to the first member.

Hydrostatic Piston Machine Unit

A hydrostatic piston machine unit, which is in particular designed as a hydrostatic axial piston machine unit, comprises at least two driving mechanisms that can be driven synchronously and have displacement pistons which each perform a reciprocating motion in operation and are provided for delivery into a common pressure line. The hydrostatic piston machine unit has a jointly assigned precompression volume for the at least two driving mechanisms. 1. A hydrostatic piston machine unit comprising:two driving mechanisms configured to be driven synchronously, each of the two driving mechanisms including a plurality of displacement pistons that perform a reciprocating motion in operation and are configured to deliver into a common pressure line or a common pressure connection,wherein the two driving mechanisms are jointly assigned a precompression volume.2. The hydrostatic piston machine unit according to claim 1 , wherein:a first driving mechanism of the two driving mechanisms includes first displacement pistons of the plurality of displacement pistons that are arranged in a first rotating cylinder part that defines a plurality of first cylinder spaces;each first cylinder space is configured to be alternately connected via a first connecting opening to a first low-pressure control port and a first high-pressure control port of a first stationary control part, on which two first changeover regions are arranged between the first low-pressure control port and the first high-pressure control port, the first displacement pistons configured to reverse direction of motion within the two first changeover regions at a first dead center position;a second driving mechanism of the two driving mechanisms includes second displacement pistons of the plurality of displacement pistons that are arranged in a second rotating cylinder part that defines a plurality of second cylinder spaces;each second cylinder space is configured to be alternately connected via a second connecting opening ...

Hydrostatic Positive Displacement Machine

A hydrostatic positive displacement machine has a cylinder drum () located in a housing () and rotatable around an axis of rotation (). During rotation of the cylinder drum (), a piston bore () is placed in alternating communication with an inlet side (E) and an outlet side (A). The inlet side (E) and outlet side (A) comprise connections () to a control plate (). A reversing device () is located in a reversing area () between the connections ( ) on the control plate (). The reversing device () damps the pressure adjustment between a displacement chamber (V) and the pressure present in the connection (). The reversing device () includes at least two flow connections which are actuated simultaneously by the displacement chamber (V) as it moves along the reversing area (). 1. A hydrostatic positive displacement machine , comprising:a cylinder drum located in a housing and rotatable around an axis of rotation, wherein the cylinder drum is provided with at least one piston bore;a longitudinally displaceable piston located in the piston bore, wherein during rotation of the cylinder drum the piston bore is placed in alternating communication with an inlet side and an outlet side, wherein the inlet side and outlet side comprise connections to a control plate; anda reversing device located in a reversing area between the connections on the control plate and which, by means of a volume flow into or out of a displacement chamber formed by the piston and the piston bore, damps a pressure adjustment between the displacement chamber and a pressure present in the connection, wherein the reversing device comprises at least two flow connections which are actuated simultaneously by the displacement chamber as it moves along the reversing area.2. The hydrostatic positive displacement machine as recited in claim 1 , wherein the flow connections on the control plate are located on a contour line which corresponds to a leading edge of a connecting opening of the displacement chamber.3. ...

AXIAL PISTON MACHINE HAVING A CONICAL PISTON

An axial piston machine includes a housing, a drive shaft, and a cylinder drum. The drive shaft is mounted in the housing so as to be rotatable with respect to a first axis of rotation. The cylinder drum is mounted so as to be rotatable with respect to a second axis of rotation. The cylinder drum has at least one cylinder bore that linearly guides an elongate piston. The piston has a first end connected to the drive shaft by a ball joint and a section in the form of a circular cone which tapers toward the first end. The piston also has a spherical section at the second end that is situated opposite the first end. The cone-shaped section merges without offsets and kinks into the spherical section. The piston has a flat end face at the second end which defines a plane that intersects the spherical section. 1. An axial piston machine , comprising:a housing;a drive shaft mounted in the housing in such a way so as to be rotatable with respect to a first axis of rotation;a cylinder drum mounted so as to be rotatable with respect to a second axis of rotation, the cylinder drum defining at least one circular-cylindrical cylinder bore; andan elongate piston accommodated in the at least one circular-cylindrical cylinder bore in a manner which allows linear motion, the piston having (i) a first end connected to the drive shaft by a ball joint, (ii) a section in the form of a circular cone which tapers toward the first end, and (iii) a spherical section at a second end situated opposite the first end,wherein the cone defined by the section in the form of a circular cone merges without offsets and kinks into the spherical section, andwherein the piston has a flat end face at the second end which forms a corner with the spherical section.2. The axial piston machine according to claim 1 , wherein the corner between the end face and the spherical section of the piston has a radius or a chamfer.3. The axial piston machine according to claim 1 , wherein the cylinder drum is composed ...

Axial piston engine with an inclined cylinder bore

An axial piston engine, in particular pump or motor, includes a housing, a drive shaft, and a cylinder drum. The drive shaft is mounted in the housing so as to be rotatable with respect to a first axis of rotation. A bearing body is received in the cylinder drum rotatably with respect to a second axis of rotation. The bearing body is connected to the drive shaft via a first ball joint that has a joint center lying on the first axis of rotation. The cylinder drum has at least one circular-cylindrical cylinder bore in which an elongated piston is displaceably received. A first end of the piston is connected to the drive shaft via a second ball joint. The at least one cylinder bore is arranged at an inclination to the second axis of rotation.

METHODS AND SYSTEM FOR INDEPENDENTLY CONTROLLING INJECTOR HEAD DRIVE MOTOR SPEEDS

A system for controlling a coiled tubing injector head includes a hydraulic control line in fluid communication with each drive motor, a valve associated with one or both hydraulic control lines, and a sensor associated with each drive motor. Each sensor is configured to output to a digital computer a signal representative of a motor speed, and at least one valve associated with a hydraulic control line is operable to regulate pressure in the hydraulic control line and thereby increase or decrease the speed of the corresponding motor until both speed sensors report substantially matching motor speeds. 1. A system for controlling a coiled tubing injector head , the injector head having a pair of continuous loop drive chains having opposed , elongated parallel runs spaced apart to form a path for engaging tubing passing there through , each drive chain independently driven by a drive motor , the system comprising:a hydraulic control line in fluid communication with each drive motor;a valve associated with one or both hydraulic control lines; anda sensor associated with each drive motor, wherein each sensor is configured to output to a digital computer a signal representative of a motor speed, andwherein at least one valve associated with a hydraulic control line is operable to regulate pressure in the hydraulic control line and thereby increase or decrease the speed of the corresponding motor until both speed sensors report substantially matching motor speeds.2. The system of claim 1 , wherein the valve is operable to regulate pressure in the hydraulic control line to a swash plate of the corresponding motor.3. The system of claim 1 , wherein the digital computer is a programmable logic controller.4. The system of claim 1 , wherein at least one sensor is configured to a transmit a frequency output corresponding with a motor speed to the digital computer.5. The system of claim 1 , further comprising a pressure transducer disposed in one or both hydraulic control lines ...

PISTON INCLUDED IN LIQUID-PRESSURE ROTATING DEVICE AND LIQUID-PRESSURE ROTATING DEVICE

A piston in a liquid-pressure rotating device in which pistons are arranged at a cylinder block rotatable together with a rotating shaft, includes: a cylindrical peripheral wall main body portion including a hollow portion, an opening portion formed at one end of the body portion and communicating with the hollow portion; a lid portion welded to an inner peripheral surface of the opening portion sealing the hollow portion and including an outer surface formed as a pressure receiving surface which receives liquid pressure; and a stress reducing portion provided on an inner peripheral surface of the body portion, the inner peripheral surface in contact with or close to an end portion of a welded portion formed between the opening portion and the lid portion, the end portion located at the hollow portion side, the stress reducing portion configured to reduce stress acting on the end portion of the welded portion. 1. A piston included in a liquid-pressure rotating device in which a plurality of pistons including the piston are arranged at a cylinder block in a circumferential direction of the cylinder block , the cylinder block being configured to rotate together with a rotating shaft , the liquid-pressure rotating device being used as a pump or a motor ,the piston comprising:a cylindrical peripheral wall main body portion including a hollow portion, an opening portion being formed at one end of the peripheral wall main body portion and communicating with the hollow portion;a lid portion welded to an inner peripheral surface of the opening portion to seal the hollow portion and including an outer surface formed as a pressure receiving surface which receives liquid pressure; anda stress reducing portion provided on an inner peripheral surface of the peripheral wall main body portion or an inner surface of the lid portion, the inner peripheral surface and the inner surface being in contact with or close to an end portion of a welded portion formed between the opening ...

HYDRAULIC SYSTEM

A hydraulic system includes a piston, a swash plate opposed to the piston, and a swash plate supporting member supporting the swash plate so that a tilt of the swash plate is variable. An oil reservoir portion is provided between the swash plate and the swash plate supporting member, the oil reservoir portion communicating with a pressure oil introducing passage. An area of the oil reservoir portion between the swash plate and the swash plate supporting member varies with the tilt of the swash plate. 1. A hydraulic system , comprising:a piston;a swash plate opposed to the piston; anda swash plate supporting member supporting the swash plate so that a tilt of the swash plate is variable,wherein at least one oil reservoir portion is provided between the swash plate and the swash plate supporting member, the at least one oil reservoir portion communicating with a pressure oil introducing passage, andwherein an area of the at least one oil reservoir portion between the swash plate and the swash plate supporting member varies with the tilt of the swash plate.2. The hydraulic system according to claim 1 , wherein a first concave portion is formed in a surface of the swash plate facing the swash plate supporting member claim 1 , the first concave portion forming the at least one oil reservoir portion claim 1 ,wherein a second concave portion is formed in a surface of the swash plate supporting member facing the swash plate, the second concave portion forming the at least one oil reservoir portion, andwherein an area of a region in which the first concave portion and the second concave portion overlap with each other varies with the tilt of the swash plate.3. The hydraulic system according to claim 1 , wherein an area of the at least one oil reservoir portion in a largest tilt state where a tilt angle of the swash plate is largest is larger than an area of the at least one oil reservoir portion in an intermediate state between a smallest tilt state where the tilt angle is ...

HYDRAULIC AXIAL-PISTON DEVICE WITH FEATURES TO ENHANCE EFFICIENCY AND POWER-DENSITY

An axial piston device configuration that includes a drive shaft, a piston block, pistons, a constant velocity joint assembly, a drive plate coupled to the constant velocity joint assembly, a swash plate, shoes, and piston rods may be provided. The piston block has an interior that is coupled to the drive shaft via a first torque transmitting mechanical interface. The constant velocity joint assembly includes multiple components, at least one of which is coupled to the drive shaft via a second torque transmitting mechanical interface. 1. An axial piston device comprising:a drive shaft that rotates about a longitudinal drive axis;a piston block having an interior coupled to the drive shaft by a first torque transmitting mechanical interface such that the piston block rotates with the drive shaft about the longitudinal drive axis, the piston block defining a plurality of cylinders;pistons positioned within the cylinders, the pistons being reciprocally movable within the cylinders;a constant velocity joint including an inner race, an outer race and balls positioned between the inner and outer races, the inner race being coupled to the drive shaft by a second torque transmitting mechanical interface such that the constant velocity joint rotates with the drive shaft about the longitudinal drive axis, the balls being configured to transfer torque from the inner race to the outer race, and the balls being configured to allow the outer race to pivot relative to the inner race and the drive shaft;a drive plate coupled to the outer race of the constant velocity joint such that the drive plate rotates with the constant velocity joint about the longitudinal drive axis, the drive plate defining a plurality of shoe pockets, and the drive plate being mounted to pivot with the outer race relative to the drive shaft;a swash plate configured to pivot with the drive plate and the outer race relative to the drive shaft, the swash plate not being rotatable with the drive shaft;shoes ...

SLIDING SYSTEM

A sliding system includes a pair of sliding members having opposing sliding surfaces adapted to move relative to each other, and a lubricating oil interposed between the opposing sliding surfaces. Here, at least one of the sliding surfaces is a covered surface covered with a specific chromium nitride film. The lubricating oil contains an oil-soluble molybdenum compound formed of a molybdenum dialkyldithiocarbamate. In the chromium nitride film, when an amount of atoms constituting the entire chromium nitride film is set as 100 atom %, there is 32 atom % to 47 atom % of N, the balance is Cr, and a relative area which is an area ratio of the (111) plane with respect to the (200) plane obtained when the chromium nitride film is analyzed by X-ray diffraction is 20% to 30%. 1. A sliding system including a pair of sliding members having opposing sliding surfaces adapted to move relative to each other and a lubricating oil interposed between the opposing sliding surfaces ,wherein at least one of the sliding surfaces is a covered surface covered with a chromium nitride film,in the chromium nitride film, when an amount of atoms constituting the entire chromium nitride film is set as 100 atom %, there is N of 32 atom % to 47 atom %, and the balance is Cr, and a relative area which is an area ratio of a (111) plane with respect to a (200) plane obtained when the chromium nitride film is analyzed by X-ray diffraction is 20% to 30%,the lubricating oil contains a molybdenum dialkyldithiocarbamate which is an oil-soluble molybdenum compound, anda mass ratio of Mo of the molybdenum dialkyldithiocarbamate with respect to the entire lubricating oil is 50 ppm to 800 ppm.2. The sliding system according to claim 1 , wherein the mass ratio of Mo of the molybdenum dialkyldithiocarbamate with respect to the entire lubricating oil is 200 ppm to 700 ppm.3. The sliding system according to claim 1 , wherein the chromium nitride film contains CrN together with CrN.4. The sliding system ...

Seal Plate Located Between Two Housing Portions in an Integrated Drive Generator

A seal plate body has a first the zone including three bolt hole ears and an oil passage ear. A second zone includes four bolt hole ears. A third zone includes six bolt ears and one alignment pin ear. A fourth zone has three bolt hole ears. A fifth zone includes five bolt hole ears and one oil passage ear. A sixth zone includes three bolt hole ears and one alignment pin ear. Each of the bolt hole ears includes a bolt hole, and each of the oil passage ears includes an oil passage hole. An integrated drive generator and a method are also disclosed. 1. A seal plate for use in an integrated drive generator comprising:a seal plate body having six zones, all of the zones are generally straight but not entirely straight;a first zone includes three bolt hole ears and an oil passage ear, the first zone extends along a first direction towards a second of the zones;the second zone extends at an angle in a second direction away from the first zone, the second direction having a component extending in an opposite direction relative to the first direction, and towards a third of the zones, the second zone includes four bolt hole ears;the third zone extends in a direction having a component opposed to the first direction towards a fourth of the zones, the third zone includes six bolt hole ears and one alignment pin ear;the fourth zone extends from an end of the third zone towards a fifth of the zones, the fourth zone includes three bolt hole ears;the fifth zone extends with a component in the second direction, and also with a component back toward the first zone, the fifth zone includes five bolt hole ears and one oil passage ear;a sixth zone extends from an end of the fifth zone with a component in the first direction and back to connect to an end of the first zone, the sixth zone includes three bolt hole ears and one alignment pin ear; andeach of the bolt hole ears including a bolt hole, and each of the oil passage ears including an oil passage hole.2. The seal plate as set ...

HYDRAULIC UNIT CYLINDER BLOCK FOR INTEGRATED DRIVE GENERATOR

A cylinder block for use in an integrated drive generator has a shaft portion with a relatively small outer diameter and a cylindrical body portion having a larger outer diameter than the shaft portion, and said cylindrical body portion formed with a plurality of piston chambers, said cylindrical body portion extending from a first end to a second end, said second end being provided with cylindrical ports leading into said piston chambers and said cylindrical ports having a third end and a fourth end wherein a ratio of a first distance from said first end to said fourth end to a second distance from said first end to said second end being between 0.91 and 0.93. A generator and a method are also described. 1. A cylinder block for use in an integrated drive generator comprising:a shaft portion having a relatively small outer diameter; anda cylindrical body portion having a larger outer diameter than the shaft portion, and said cylindrical body portion formed with a plurality of piston chambers, said cylindrical body portion extending from a first end to a second end, said second end being provided with cylindrical ports leading into said piston chambers and said cylindrical ports having a third end and a fourth end wherein a ratio of a first distance from said first end to said fourth end to a second distance from said first end to said second end being between 0.91 and 0.93.2. The cylinder block as set forth in claim 1 , wherein there being intermediate kidney-shaped ports between said cylindrical ports and said piston chambers.3. The cylinder block as set forth in claim 2 , wherein said kidney-shaped ports having a width and a ratio of a depth of said cylindrical port defined as a difference between said second and first distances claim 2 , to said width is between 0.48 and 0.62.4. The cylinder block as set forth in claim 1 , wherein a wear plate is affixed to said second end of said cylindrical body portion.5. The cylinder block as set forth in claim 4 , wherein ...

CAM MACHINE WITH ADJUSTMENT MECHANISM

The invention relates to a cam machine with a control mechanism which will find application in various fields of mechanical engineering, such as compressor machines, hydraulic pumps, internal combustion engines and other types of engines in various land, sea and air vehicles, or in stationary units. 12231212625262015155920111137252560372337116264533515152137667810117571166206262ababababab. Cam machine comprising a housing ( , and ) , at least one cylinder () , at least one piston () moving in the cylinder () , a cylindrical tubular 3D cam () with a cam channel on the inner cylindrical surface which channel is made so that the line forming its cross section is the concave line having two cam profiles ( , ) and a bottom () between them , which is laterally located relative to the axis of the 3D cam () and at least two asynchronously moving followers ( , ) located opposite each other , each follower ( , ) containing at least two arms () connected respectively to one of the two pistons () or to one piston () and a balancing element () , wherein the arms () spaced at an angle to each other are provided with tubular main bearing journals () with main rollers () placed in bearings at the free ends of the respective arms () and each follower ( , ) further comprises cylindrical plungers () located in the main bearings journals () , which cylindrical plungers () comprise additional bearing journals () bearing additional rollers () , performing both rectilinear and rotational movement in the direction and around the axes of the respective main rollers () so that each main and an additional roller ( and ) is in contact with its respective profile (or ) of the cam channel , characterized in that the tubular main bearing journals () have threaded holes () in which screw regulators () are mounted , contacting indirectly or directly with the plungers () , where the indirect contact between the plungers () and the adjacent screw regulators () is made through elastic and bearing ...

TILT LINKAGE FOR VARIABLE STROKE PUMP

A variable stroke high pressure pump is disclosed. The pump uses a wobble plate design with dynamically variable tilt to provide continuous adjustment of pump stroke length and output. Dynamically variable tilt is accomplished using a linearly actuated tilt thruster rotationally coupled to the drive shaft to maintain a selected tilt of the wobble plate through the rotation of the wobble plate. 1. An apparatus , comprising:a drive shaft coupled to a drive;a wobble plate rotationally coupled to the drive shaft;a plurality of displacement rods coupled to the wobble plate; and a slider slidably coupled to the drive shaft and coupled to a linear actuator disposed within the drive shaft; and', 'a thruster assembly coupled to the slider, extending to the wobble plate, and coupled to the wobble plate by a rotational thrust bearing., 'a tilt actuator assembly rotationally coupled to the drive shaft, the tilt actuator assembly comprising2. The apparatus of claim 1 , wherein the linear actuator is coupled to a hydraulic member located at a fluid end of the apparatus.3. (canceled)4. The apparatus of claim 2 , wherein the linear actuator is coupled to the hydraulic member by a rotary bearing.5. The apparatus of claim 4 , wherein the rotary bearing comprises a coupling plate disposed between two thrust bearings.6. The apparatus of claim 1 , wherein the slider is a crosshead attached to the drive shaft by a guide ring.7. The apparatus of claim 5 , wherein a first thrust bearing of the two thrust bearings comprises a roller between at least two rings claim 5 , and a second thrust bearing of the two thrust bearings comprises a plurality of rollers claim 5 , each coupled to a hub of the second thrust bearing by an axle.8. The apparatus of claim 1 , wherein the thruster assembly comprises a yaw limit assembly for controlling yaw movement of the wobble plate.9. The apparatus of claim 8 , wherein the thrust assembly comprises a thrust block coupled to the wobble plate and a thrust rod ...

Hydrostatic Axial Piston Machine

A hydrostatic axial piston machine includes a drive shaft and a plurality of cylinder sleeves in which a spherical or ball-shaped section and a spherical or ball-shaped piston are inserted to delimit a respective displacer chamber. The sections are secured on a rotor, while the pistons are secured on a piston disk or piston drum. The piston disk is configured to be tilted at different pivoting angles relative to the rotor in a variable-displacement machine, or the piston disk is tilted continuously relative to the rotor in a constant-displacement machine. The rotor and the piston disk are coupled to one another for conjoint rotation by a driving device. The rotor and the piston disk can also be coupled indirectly by a drive shaft of the machine. A sliding joint axial with respect to a drive shaft is arranged between the rotor and the piston disk.

BENT AXIS TYPE AXIAL PISTON MOTOR

In a bent axis type axial piston motor, so as to smoothly rotate a drive shaft without lowering motor efficiency and brake the drive shaft if necessary, when the drive shaft is rotated through a cylinder block by causing piston rods to reciprocate, relative rotation between separate plates and friction plates is allowed by removing a pressing force applied by a braking piston, and when the separate plates and the friction plates are pushed to a brake force receiving plate by the braking piston, relative rotation between the separate plates and the friction plates is restrained and thus the drive shaft is braked. Restriction members are disposed between a casing and the brake force receiving plate so as to restrain the brake force receiving plate from moving relative to the casing along the axis of the drive shaft. 1. A bent axis type axial piston motor comprising:a drive shaft supported by a casing through a taper roller bearing disposed between the drive shaft and the casing, the drive shaft being supported in a manner such that an end part of the drive shaft is disposed in the casing and the drive shaft is rotatable on an axis thereof;a cylinder block slidably connected to the end part of the drive shaft through a center shaft and a plurality of piston rods disposed around the center shaft, the cylinder block being disposed in the casing in a manner such that the cylinder block is rotatable around an axis of the center shaft;an accommodation space formed in the casing at a position close to a roller accommodation part of the taper roller bearing and surrounding the end part of the drive shaft;a plurality of first braking elements having an annular flat plate shape and disposed in the accommodation space in a manner such that the first braking elements are movable along the axis of the drive shaft but are restrained from rotating relative to the casing;a plurality of second braking elements having an annular flat plate shape and disposed in the accommodation space ...

ROTATABLE PISTON ASSEMBLY

A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine. 1. A rotatable piston assembly for a reciprocating piston type hydraulic machine , the rotatable piston assembly comprising: the reciprocating piston type hydraulic machine is an axial piston machine comprising a rotating swash mechanism configured for variable displacement, a stationary cylinder block, and a rotatable shaft coupled to the rotating swash mechanism, and', 'the rotating swash mechanism is a rotating wobble plate connected to a swash collar through a plurality of bearings, and the swash collar is connected to the rotatable shaft through a plurality of bearings., 'a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine along a cylinder bore axis of the cylinder bore, wherein'}2. The rotatable piston assembly of claim 1 , wherein the axial piston machine comprises:a manifold disposed within the stationary cylinder block and a swash housing configured to house a double sided piston configuration, the manifold configured for fluid communication with the rotatable piston assembly, the manifold comprising:a proximal manifold port disposed at a proximal end of the manifold within the stationary cylinder block;a proximal manifold passage in fluid communication with the proximal manifold port and comprising a plurality of proximal manifold passage port openings;a distal manifold port disposed along a distal end of the manifold within the stationary cylinder block;a distal manifold passage in fluid communication with the distal manifold port and comprising a plurality of distal manifold passage port openings;a proximal inward cylinder block port disposed in the stationary cylinder block and in fluid communication ...

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Hydraulic and pneumatic drive systems and fluid motors ( 12 ) and fluid pumps ( 10 ) therefor are disclosed. In such systems, rotation motion is converted to reciprocating motion or vice versa. In particular, a motion conversion means comprises a portion extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, and a linking means, wherein the portion and the linking means are relatively rotatable about the central axis and a one of the linking means and the portion is fixedly coupled to a piston means, wherein the linking means and the portion are configured to cooperate whereby the reciprocating movement of the piston means causes relative rotary motion of the other of the portion and the linking means about said central axis. The other of the portion and the linking means may be coupled to a sleeve means to cause rotation thereof.

Hydrostatic Axial Piston Machine

A hydrostatic axial piston machine () with a cylinder barrel () having at least one piston bore () in which is located a power unit piston () supported on a cam disk (). A control surface () is stationary relative to the housing and is on a control base (), against which control surface the cylinder barrel () is in contact. In the control base () there are a kidney-shaped inlet connection () and a kidney-shaped outlet connection (). The sealing web surface on the control surface on the control base () in the vicinity of the inlet connection () is reduced, so that in operation as a motor, when there is a pressurization of the inlet connection (), a reduction of the hydrostatic relief force is achieved. In operation as a motor, a residual application of the cylinder barrel () against the control surface () from a hold-down force of a hold-down spring () that is in an operative connection with the cylinder barrel () and/or pressing cylinder compression forces is preserved. In addition or alternatively, the terminal areas of the kidney-shaped inlet connection () of the control base () have a transitional contour (K) in the shape of a flattened arc in the radially outer area. 1. A hydrostatic axial piston machine , comprising:a cylinder barrel rotatable around an axis of rotation;at least one piston bore located in the cylinder barrel;a power unit piston located in the piston bore and supported on a cam disk so that it can move longitudinally;a control surface stationary relative to a housing and located on a control base, against which control surface the cylinder barrel is in contact;a kidney-shaped inlet connection and a kidney-shaped outlet connection in the control base; anda displacement chamber formed between the piston bore and the power unit piston, which during rotation of the cylinder barrel around the axis of rotation is placed in communication alternately with the inlet connection and the outlet connection,wherein the axial piston machine is operable as a ...

Modular Gland Arrangements For A Fluid End Assembly

A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces. 1. An apparatus comprising: a body having at least two axially spaced and circumferential grooves formed therein; and', 'one and only one annular seal, the seal positioned within one of the grooves of the body., 'a closure element configured to be received within a conduit formed in a fluid end housing, the closure element comprising2. The apparatus of in which the closure element is a plug sized to be closely received within the conduit.3. The apparatus of in which the closure element is a tubular sleeve sized to be closely received within the conduit.4. The apparatus of claim 3 , in which the tubular sleeve is configured to receive a reciprocating plunger.5. The apparatus of in which the circumferential groove comprises two sidewalls joined by a base.6. A kit comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the apparatus of ; and'}{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'an annular seal not in contact with the apparatus of .'}7. An apparatus comprising: a body having a stairstep profile, the stairstep profile being formed by at least two axially spaced and circumferential structural features; and', 'at least one annular seal, the seal positionable around any of the structural features ...

AXIAL PISTON MACHINE

An axial piston machine () is shown, comprising: a shaft () having an axis () of rotation, a cylinder drum () connected to said shaft () and having at least a cylinder () parallel to said axis () of rotation, a piston () movable in said cylinder (), a swash plate (), a slide shoe () pivotally mounted to said piston (), and holding means holding said slide shoe () against said swash plate (), said holding means having a pressure plate () and a number of coil springs () arranged between said cylinder drum () and said pressure plate (). The object is to have a reliable operation of said machine with a simple construction. To this end each coil spring () is at least at one end fixed by a protrusion () extending into said coil spring (). 1. An axial piston machine comprising:a shaft having an axis of rotation, a cylinder drum connected to said shaft and having at least a cylinder parallel to said axis of rotation, a piston movable in said cylinder, a swash plate, a slide shoe pivotally mounted to said piston, and holding means holding said slide shoe against said swash plate, said holding means having a pressure plate and a number of coil springs arranged between said cylinder drum and said pressure plate wherein each coil spring is at least at one end fixed by a protrusion extending into said coil spring.2. The axial piston machine according to claim 1 , wherein said protrusions are located on a ring.3. The axial piston machine according to claim 2 , wherein said ring is guided against radial movement with respect to said axis of rotation.4. The axial piston machine according to claim 2 , wherein said pressure plate is supported by a ball element claim 2 , said ring resting on a side of said ball element opposite said pressure plate.5. The axial piston machine according to claim 2 , wherein said ring is made of a plastic material.6. The axial piston machine according to claim 1 , wherein both ends of each coil spring are fixed by a protrusion.7. The axial piston machine ...

AXIAL PISTON ENGINE AND METHOD FOR OPERATING AN AXIAL PISTON ENGINE

To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion. 1. Method for operating an axial piston engine with continuous combustion , wherein fuel is decomposed in a first step and after said first step is brought into contact with process air for ignition and combustion in a second step , wherein the decomposition of the fuel takes place thermally by thermal energy until ignition.2. Method according to claim 1 , wherein the preparation flame is generated by a fuel/air mixture.3. Method according to claim 2 , wherein a portion of fuel which is brought into a combustion chamber or into a preparation chamber by the fuel/air mixture is less than 10% of the total quantity of fuel which is introduced into the combustion chamber.4. Method according to claim 1 , wherein the thermal energy for the decomposition is provided by a preparation flame.5. Method according to claim 1 , wherein the fuel is sprayed into the combustion chamber by a main nozzle claim 1 , wherein the main nozzle is aligned coaxially to an axis of symmetry of the combustion chamber. This application is a continuation of and Applicant claims priority under 35 U.S.C. § 120 of U.S. application Ser. No. 12/734,508 filed on May 6, 2010, which application is a national stage application under 35 U.S.C. § 371 of PCT Application No. PCT/DE2008/001836 filed on Nov. 10, 2008, which claims priority under 35 U.S.C. § 119 of German Application No. 10 2007 054 204.8 filed on Nov. 12, 2007, German Application No. 10 2007 055 337.6 filed on Nov. 19, 2007, and German Application No. 10 2007 056 814.4 filed on Nov. 23, 2007. Certified copies of priority German Patent Application Nos. 10 2007 054 204.8, 10 2007 055 337.6 and 10 2007 056 814.4 are contained in parent U.S. application Ser. No. 12/734,508. The international application under PCT article 21(2) was not published in English.The invention relates to an ...

ROTARY FLUID DEVICE WITH BENT CYLINDER SLEEVES

A rotary fluid pump-motor includes first and second rotor assemblies and a bent cylinder sleeve. The first rotor assembly includes a first rotor, a piston cylinder, and a flange ring with an inclined guide surface. The second rotor assembly includes a second rotor and a piston. The first and second rotors are rotatably movable about inclined first and second rotor axes, respectively. The bent cylinder sleeve receives the piston cylinder and the piston therein through respective sleeve openings to define a piston chamber therebetween. The bent cylinder sleeve is in at least intermittent contacting relationship with the flange ring's inclined guide surface and rotatably movable about the first rotor axis with respect to the inclined guide surface such that the bent cylinder sleeve moves along the first rotor axis relative to the piston cylinder based upon its circumferential position along the inclined guide surface to correspondingly vary the piston chamber's volume. 1. A rotary fluid pump-motor comprising:a first rotor assembly, the first rotor assembly including a first rotor, a piston cylinder, and a flange ring, the first rotor being rotatably movable about a first rotor axis with respect to the flange ring, the first rotor defining a bore therethrough, the piston cylinder being mounted to the first rotor and extending therefrom along the first rotor axis to a distal cylinder end, the piston cylinder being hollow and defining an interior cylinder cavity with a proximal opening and a distal opening, the interior cylinder cavity being in fluid communication with the bore of the first rotor via the proximal opening, the flange ring including an inner perimeter defining an inner opening and an inclined guide surface circumscribing the perimeter, the piston cylinder disposed within the inner opening of the flange ring;a second rotor assembly, the second rotor assembly including a second rotor and a piston, the second rotor being rotatably movable about a second rotor ...

Axial piston machine

An axial piston machine may include a a housing having vapor, cylinder chamber and wobble-plate chambers. The machine may have cylinders arranged annularly around a shaft in the cylinder chamber and having pistons arranged therein in a translationally movable manner, a valve disk connected to the shaft in a rotationally fixed manner and arranged in the vapor chamber, and a wobble plate connected to one of the pistons via a cup and ball bearing and to the shaft in a rotationally fixed manner, the wobble plate being arranged in the wobble-plate chamber. The housing may have steam-chamber, cylinder, and wobble-plate housing parts connected to one another. A cylinder sleeve having a radially protruding collar may be provided in at least one cylinder, wherein the cylinder sleeve may be retained via the collar in a cut-out in the cylinder housing part, which may adjoin a parting plane between the vapor-chamber and cylinder housing parts. The vapor chamber may be closed off by a first cover, which may be connected to the vapor-chamber housing part and which may be designed as a shaped sheet-metal part.

Method for Manufacturing a Spherical-Cap-Shaped Recess in a Drive Shaft, Drive Shaft Comprising the Recess, and Hydrostatic Axial Piston Machine Comprising the Drive Shaft

A method for manufacturing an at least sectionally spherical-cap-shaped recess on a drive shaft for a hydrostatic axial piston machine includes whirling of the recess and heat treatment of the recess to form a wear layer. A drive shaft for a hydrostatic axial piston machine includes at least one recess manufactured according to the method. A hydrostatic axial piston machine includes a drive shaft with at least one recess manufactured according to the method. 1. A method for manufacturing an at least sectionally spherical-cap-shaped recess on a drive shaft for a hydrostatic axial piston machine , the recess configured to receive a ball head of a guide piston or working piston of the axial piston machine , the method comprising:whirling of the recess; andheat treatment of the recess to form a wear layer, the heat treatment satisfying specifications of the recess with respect to dimensional tolerance and wear behavior.2. The method according to claim 1 , wherein the heat treatment satisfies specifications of the wear layer with respect to thickness claim 1 , surface hardness claim 1 , and ductility.3. The method according to claim 1 , wherein the whirling of the recess is effected with air cooling.4. The method according to claim 1 , wherein the heat treatment is effected in a plurality of stages of differing temperatures and durations.5. The method according to claim 1 , wherein a nitriding hardness depth is approximately 0.1 mm to 0.25 mm.6. The method according to claim 1 , further comprising cleaning the heat-treated recess.7. A drive shaft for a hydrostatic axial piston machine claim 1 , comprising:a body having an end face subjected to whirling to define a recess in the end face and heat treatment to form a wear layer on the recess, the heat treatment satisfying specifications of the recess with respect to dimensional tolerance and wear behavior.8. The drive shaft according to claim 7 , further comprising a flange on the end face claim 7 , the recess arranged in ...

REFRIGERATION DEVICE

A refrigeration device includes a compressor, a condenser, an expansion valve, an evaporator, intake electromagnetic valves and exhaust electromagnetic valves, two-position three-way electromagnetic valves or two-position five-way electromagnetic valves, a cylinder group, a volume-variable airproof container, two-position two-way electromagnetic valves and a generator. The cylinder group is composed of two or more cylinders, refrigerant flows successively through the compressor, the intake electromagnetic valves, the cylinder group, the exhaust electromagnetic valves, the condenser, the expansion valve and the evaporator and finally enters the compressor from the evaporator, the cylinder group can do work to generate electricity through atmospheric pressure in the volume-variable airproof container and compensates for electric energy consumed by the compressor, and therefore the electric energy can be saved. 1. A refrigeration device , wherein the refrigeration device comprises a compressor , a condenser , an expansion valve , an evaporator , intake electromagnetic valves and exhaust electromagnetic valves , two-position three-way electromagnetic valves or two-position five-way electromagnetic valves , a cylinder group , a volume-variable airproof container , two-position two-way electromagnetic valves , a generator , and a three-way tube; the intake electromagnetic valves and the exhaust electromagnetic valves are normally closed valves; the cylinder group consists of two or more cylinders , the cylinders are double-acting cylinders , a pipeline from the compressor to the cylinders are wrapped with a heat preservation material , and the cylinders are made of a material with good performance of heat insulation; the area affected by a force on a side of the cylinders without a rod is larger than the area affected by a force on a side with a piston rod of the cylinders , the force affected on the side without a rod of the cylinders is larger or equal to the sum of the ...

Fixed shaft for hydraulic unit

A fixed shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The second end of the body has an outer diameter of 0.990±0.005 inches (2.515±0127 cm). The first and second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first and second flange having an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). The portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).

HYDRAULIC AXIAL PISTON UNIT WITH CENTRAL FIXED HOLD DOWN DEVICE

Hydraulic axial piston unit () of the swashplate construction type having a drive shaft () adapted to drive or be driven by a cylinder block (). The cylinder block comprises a plurality of cylinder bores (), in which several pistons () are moveable in general along the rotational axis () of the drive shaft () and relative to the cylinder bores (). First ends of the pistons () protrude outside of the cylinder bores () and are slidable fixed by means of slippers () to a swashplate (). The slippers () are hold down in a sliding manner on a sliding surface () of the swashplate () by means of a slipper hold down ring () arranged parallel to the sliding surface (). The slipper hold down ring () is in a sliding contact with its radial inner surface () with a matching surface () on a guide ball () rotationally fixed on the drive shaft () and axially moveable in direction of the rotational axis () relative to the cylinder block () against resilient forces of springs () characterized in that a mounting ring () is attached to the cylinder block () in order to limit the axial movement of the guide ball () towards the cylinder block (). 1. A hydraulic axial piston unit of the swashplate construction type having a drive shaft adapted to drive or be driven by a cylinder block having a plurality of cylinder bores , in which several pistons are moveable in general along the rotational axis of the drive shaft and relative to the cylinder bores , wherein first ends of the pistons protrude outside of the cylinder bores and are slidable fixed by means of slippers to a swashplate , wherein the slippers are held down in a sliding manner on a sliding surface of the swashplate by means of a slipper hold down ring arranged parallel to the sliding surface , and wherein the slipper hold down ring is in a sliding contact with its radial inner surface with a matching surface on a guide ball rotationally fixed on the drive shaft and axially moveable in direction of the rotational axis towards the ...

Hydraulic Machine of Axial-Piston Design

A hydraulic axial-piston machine achieves a control cut-off by an additional control edge of a control valve of an actuating mechanism for swiveling a swash plate. 1. A hydraulic axial piston machine , comprising:a cylindrical drum;a plurality of pistons with each piston guided in a respective bore of the cylindrical drum, the pistons each defining a working chamber and being supported on a swash plate having an adjustable swivel angle;an actuating device including (i) an actuating cylinder configured to adjust the swivel angle of the swash plate so as to adjust a displacement and (ii) an actuating valve having a proportionally adjustable control piston, the actuating cylinder defining an actuation chamber configured to be connected to high or low pressure via the proportionally adjustable control piston; anda measuring spring configured for forcibly feeding back the swivel angle to the control piston,wherein, for control cut-off, the control piston has a control edge configured to open a pilot oil connection between the actuating chamber and low pressure.2. The hydraulic axial piston machine according to claim 1 , wherein the actuating valve is configured to be adjusted by a proportional solenoid claim 1 , wherein a tappet submerges into a solenoid chamber into which the tappet-side end portion of the control piston also projects claim 1 , the latter being biased by the measuring spring into a position in which it bears against the tappet claim 1 , and wherein the solenoid chamber has a fluid connection to the actuation chamber and the control edge controls a pilot oil connection to the solenoid chamber.3. The hydraulic axial piston machine according to claim 1 , further comprising a non-return valve configured to connect the actuating chamber to high pressure claim 1 , bypassing the control cross section claim 1 , in order to prioritize the inward swivel of the swash plate.4. The hydraulic axial piston machine according to claim 3 , wherein the non-return valve is ...

HYDRAULIC ROTARY MACHINE AND VALVE PLATE THEREOF

It includes a plurality of cylinders formed on the cylinder block; a piston slidably inserted into the cylinder; a case accommodating the cylinder block; and a valve plate formed by a core member and a resin layer coating the core member, the valve plate being interposed between the cylinder block and an end cover of the case. The valve plate has a first land portion formed by the resin layer, the first land portion being in sliding contact with the cylinder block; and an outer-side non-contact portion provided closer to an outer side in a radial direction than the first land portion, the outer-side non-contact portion being separated away from the cylinder block. At least a part of the outer-side non-contact portion is an exposed portion where the core member is exposed. 1. A hydraulic rotary machine comprising:a cylinder block to which a shaft is connected so as to be rotated with the shaft;a plurality of cylinders formed on the cylinder block, the plurality of cylinders being disposed at a predetermined interval in a circumferential direction of the shaft;a piston slidably inserted into the cylinder, the piston defining a volume chamber inside the cylinder;a shoe rotatably connected to a tip end of the piston;a swash plate with which the shoe is in sliding contact;a case accommodating the cylinder block; anda valve plate formed by a core member and a resin layer coating the core member, the valve plate being provided with a supply port through which an operating liquid supplied to the volume chamber passes and a discharge port through which an operating liquid discharged from the volume chamber passes, the valve plate being interposed between the cylinder block and the case, wherein a sliding contact portion formed by the resin layer, the cylinder block being in sliding contact with the sliding contact portion; and', 'a non-contact portion separated away from the cylinder block, and, 'the valve plate has'}at least a part of the non-contact portion is an exposed ...

OPPOSED PISTON ENGINE

An opposed piston engine has a driveshaft with at least one combustion cylinder positioned between opposing, curvilinear shaped cams mounted on the driveshaft, where the center axis of the combustion cylinder is parallel with but spaced apart from the driveshaft axis. A piston assembly is disposed in each end of the cylinder, with one piston assembly engaging one cam and the other piston assembly engaging the other cam. Each piston assembly includes a cam follower that can move along a curvilinear shaped cam to reciprocate the piston assembly within the cylinder. The combustion cylinder includes an intake port in fluid communication with an annular intake channel formed in the engine block in which the cylinder is mounted, and an exhaust port in fluid communication with an annular exhaust channel formed in the engine block. 1. An internal combustion engine comprisinga driveshaft having a first end and a second end and disposed along a driveshaft axis;a first cam mounted on the driveshaft, the first cam having a circumferential shoulder of a first cam diameter and a first curvilinear shape with a first frequency;a second cam mounted on the driveshaft spaced apart from the first cam, the second cam having a circumferential shoulder of a second curvilinear shape which second curvilinear shape has the same frequency as the first curvilinear shape;a first combustion cylinder defined along a center cylinder axis, the combustion cylinder having a first end and a second end with an intake port formed in the cylinder between the first and second ends and an exhaust port formed in the cylinder between the intake port and the second end, the center cylinder axis being parallel with but spaced apart from the driveshaft axis, wherein a combustion chamber is defined within the cylinder between the two cylinder ends;a first piston assembly disposed in the first cylinder end of the first combustion cylinder and an opposing second piston assembly disposed in the second cylinder end ...

Hydraulic machine with floating cylinders

A hydraulic machine comprising: an outer casing comprising a first front plate and a second front plate, a shaft rotatable about a main axis, a first rotor comprising a first rotor body rotatable with said shaft around said main axis, and a plurality of first pistons with respective spherical ring heads fixed to said first rotor body, a second rotor comprising a second rotor body and a plurality of second pistons with respective spherical ring heads, wherein the second rotor is rotatable about a secondary axis, inclined with respect to said main axis, a plurality of sleeves that are separate and independent from each other, each having a cylinder open at opposite ends and engaged on opposite sides by a first piston and by a second piston.

Hydrostatic Axial Piston Machine with Control Disk

A hydrostatic axial piston machine includes a control disk that has a permanent relief field and at least one hydrostatic auxiliary relief field.

Modular Gland Arrangements For A Plug Valve

Insert elements that may be positioned within a high pressure plug valve. The elements have two or more recessed grooves formed around the fluid opening of the elements. The grooves are spaced from one another. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of spaced grooves in a single insert element, a kit may be formed from two or more otherwise identical insert elements, each with a single recessed groove at a different position around the fluid opening.

HYDRAULIC AXIAL PISTON MACHINE

A hydraulic axial piston machine () is described, the machine comprising a housing, a cylinder block () rotatably mounted in the housing about an axis or rotation () and having at least one cylinder (), and a valve arrangement () between the cylinder block () and the housing, the valve arrangement having a first part () rotating with the cylinder block () and a second part mounted stationary with respect to the housing. Such a machine should have a high efficiency. To this end the first part () comprises an elastically deformable spring section (). 1. A hydraulic axial piston machine comprising a housing , a cylinder block rotatably mounted in the housing ab out an axis of rotation and having at least one cylinder , and a valve arrangement between the cylinder block and the housing , the valve arrangement having a first part rotating with the cylinder block and a second part mounted stationary with respect to the housing , characterized in that the first part comprises an elastically deformable spring section.2. The machine according to claim 1 , wherein the spring section is arranged around the axis of rotation.3. The machine according to claim 1 , wherein the spring section is deformable in axial direction only.4. The machine according to claim 1 , wherein the transfer of force from the cylinder block to the first part via the spring section is symmetrical with respect to the axis of rotation.5. The machine according to claim 1 , wherein the spring section is machined out of the first part.6. The machine according to claim 1 , wherein the spring section comprises a rim surrounding the axis of rotation and contacting the cylinder block.7. The machine according to claim 6 , wherein the rim has a thickened section at the end contacting the cylinder block.8. The machine according to claim 6 , wherein the rim is connected to a radially outer part of the first part by means of a hinge section claim 6 , wherein the hinge section has a thickness which is smaller than a ...

Hydrostatic Radial Piston Machine

A hydrostatic radial piston machine is useable inversely. The hydrostatic radial piston machine has a distributor in which a flushing valve, a pressure-maintaining valve connected downstream of the flushing valve, and two nonreturn valves are arranged. 1. A hydrostatic radial piston machine , comprising:a rotatable housing in which a cylinder block is arranged, cylinder block pistons being displaceably arranged in the cylinder block, the pistons being supportable on a housing-secured cam ring and each piston bounding a cylinder space in the cylinder block,wherein the cylinder spaces are connectable to a first and second main port via a housing-secured distributor configured to supply pressure medium,wherein the distributor includes a core element via which the distributor is connectable to the first and second main ports, andwherein at least one of a flushing valve, a pressure-maintaining valve, and a nonreturn valve for the first main port, and a nonreturn valve for the second main port is arranged in the distributor.2. The hydrostatic radial piston machine according to claim 1 , wherein:the distributor with the core element bounds a first annular groove which is connectable to the first main port,the distributor together with the core element bounds a second annular groove, which is connectable to the second main port, andthe flushing valve is connected to the first annular groove via a first pressure medium flow path and is connected to the second annular groove via a second pressure medium flow path.3. The hydrostatic radial piston machine according to claim 1 , wherein:the flushing valve has a valve slide which is arranged in an axially displaceable manner in a valve slide bore introduced into the distributor, andthe valve slide bore extends approximately tangentially with respect to an inner lateral surface of the distributor.4. The hydrostatic radial piston machine according to claim 3 , wherein the valve slide bore is introduced into the distributor ...

Spring Return Apparatus for an Axial Piston Machine of Swash Plate Design for Elastically Prestressing Sliding Pads Against the Swash Plate, and Axial Piston Machine having a Spring Return Apparatus of this Type

A spring return apparatus for elastically prestressing sliding pads against a sliding bearing face of an axial piston machine. The sliding pads are positioned on working pistons mounted axially movably in cylinders of a cylinder barrel that drives a drive shaft including a spring plate and a supporting plate. The spring plate includes a ring region surrounding a central opening, and levers extending radially from the ring region. The levers are arranged spaced apart or distributed uniformly in the circumferential direction, and are elastically flexible and/or elastically pivotable in the axial direction. Every two adjacent levers delimit a receiving region for receiving a tapered section of a working piston or a sliding pad. The supporting plate has a circular ring-shaped supporting region configured to support radially outer end sections of the levers if the supporting plate is arranged concentrically with respect to and axially adjacently to the spring plate. 1. A spring return apparatus configured to prestress a plurality of sliding pads against a sliding bearing face of a pivotably mounted pivot cradle of an axial piston machine , comprising: a spring plate having a central opening, a ring region surrounding the central opening, and a plurality of levers, brackets, or arms that:', 'extends radially to an outside at least in sections from the ring region;', 'is positioned such that levers, brackets, or arms in the plurality of levers, brackets or arms are spaced apart or distributed uniformly in a circumferential direction; and', 'is at least one of elastically flexible and elastically pivotable in an axial direction; and, 'a drive shaft with a two-part element that includesa supporting plate configured to be positioned offset axially with respect to the spring plate, and having a supporting region configured to support end sections of the levers, brackets, or arms when the supporting plate is positioned concentrically with respect to and axially adjacently to ...

HYDROSTATIC ENERGY GENERATOR

A device and a method for exploiting hydrostatic energy, wherein the device includes at least a first chamber and a second chamber, wherein the first chamber and the second chamber are at least partially filled with a fluid in order to provide a device and a method for exploiting hydrostatic energy, such as for instance static or hydrostatic pressure or head, to generate and deliver energy, such as hydraulic energy, electrical energy, or mechanical energy. A first piston () movably arranged within the first chamber () and a second piston () movably arranged within the second chamber (), wherein the first piston () is mechanically or hydraulically connected to the second piston (). The first chamber () includes at least a first means () for inlet and/or discharge of the fluid () and a second means () for inlet and/or discharge of the fluid (). The second chamber () includes at least a third means () for inlet and/or discharge of the fluid () and a fourth means () for inlet and/or discharge of the fluid (). 1100101110111213101411131410151216121117121812. A device () for exploiting hydrostatic energy , wherein the device comprises at least a first chamber () and a second chamber () , wherein the first chamber () and the second chamber () are at least partially filled with a fluid () , characterized by a first piston () movably arranged within the first chamber () and a second piston () movably arranged within the second chamber () , wherein the first piston () is mechanically or hydraulically connected to the second piston () , wherein the first chamber () comprises at least a first means () for inlet and/or discharge of the fluid () and a second means () for inlet and/or discharge of the fluid () , wherein the second chamber () comprises at least a third means () for inlet and/or discharge of the fluid () and a fourth means () for inlet and/or discharge of the fluid ().21310192015121916122014112728171227181228. A device according to claim 1 , characterized in that the ...

Hydrostatic Piston Engine

A hydrostatic piston engine comprises a housing with a cylinder drum with cylinder bores mounted rotatably therein. Each of the cylinder bores receives a working piston in a longitudinally displaceable manner, via which a hydrostatic working chamber is delimited by the cylinder bore. The hydrostatic working chamber has an opening on an outer surface of the cylinder drum by which, when the cylinder drum rotates, outlets of a high-pressure chamber and of a low-pressure chamber of the piston engine and a reversing surface arranged between the two outlets in the rotational direction can be passed over in alternating fashion. At least one pressurizing medium channel is provided which, on one hand, opens out in the reversing surface and, on the other, into a pressurizing medium trough of the piston engine. 1. A hydrostatic piston engine , comprising:a high-pressure chamber;a low pressure chamber; anda housing with a cylinder drum, the cylinder drum having cylinder bores mounted rotatably therein, each of the cylinder bores receiving a working piston in a longitudinally displaceable manner, via which a hydrostatic working chamber is delimited by the cylinder bore;wherein each hydrostatic working chamber has an opening on an outer surface of the cylinder drum by which, when the cylinder drum rotates, outlets of the high-pressure chamber and of the low-pressure chamber and a reversing surface arranged between the two outlets in the rotational direction can be passed over in alternating fashion,wherein at least one pressurizing medium channel is provided which, on one hand, opens out in the reversing surface and, on another hand, opens into a pressurizing medium trough,wherein the at least one pressurizing medium channel has a first portion along which a flow cross section increases towards the pressurizing medium trough.2. The piston engine according to claim 1 , wherein:the at least one pressurizing medium channel has a second portion in a direction of the pressurizing ...

MECHANISM AND METHOD FOR A HIGH EFFICIENCY LOW NOISE HYDRAULIC PUMP/MOTOR

A rotary displacement piston pump is disclosed having rotatable single or dual valve/port plate(s). The valve plate, being rotatable forward and/or rearward with respect to the rotation of the piston carrier, alters the phasing of the land area of the pumping action thereby altering the phasing of piston speed inasmuch as the land area can be moved to a position to accelerate the piston(s) in a pre or decompression phase. In this way, pump noise, from colliding pressure fronts within the respective high and low pressure plenums, can be “tuned” out of the pump by adjusting the phasing and position of the valve plate(s) and raising or lowering the pre and decompression pressure(s) as necessary. Pump volume can also be controlled by advancing or retarding the valve plate(s), either in or out of synch, so as to shorten intake/exhaust piston stroke and overlap fluid flow between respective intake/exhaust plenums. 1. A hydraulic pump , comprising:a rotating piston carrier barrel, having first and second ends, including piston chambers therebetween, supported for rotation on a shaft having an axis within an enclosed pump casing;a plurality of externally cone shaped hollow pistons, inserted into respective pistons chambers, from each of the first and second ends of the rotating piston carrier barrel, and carried for collective rotation within the pump casing via the piston carrier, the pistons being driven in pumping action via a pair of respective floating piston plates fixedly connected to each of the respective pistons opposing each of the first and second ends of the piston carrier;first and second respective valve plates tipped at a non-right angle with respect to said axis having openings therethrough, for controlling flow of fluid to each of the plurality of pistons from aligned respective first intake and discharge plenums associated with respective sides of the pump casing, the valve plates including respective land areas, between the openings, wherein when a ...

EXTERNAL COMBUSTION ENGINE

External combustion engine which comprises a first cylinder and a second cylinder, in which a first piston and a second piston are able to slide respectively. The first and second cylinder are fluidically connected with respect to each other for the passage of a heat-carrying fluid suitable to determine the cyclical movement of the first piston and the second piston. The external combustion engine also comprises a drive shaft rotating around an axis of rotation, and with which crank means are solidly associated, provided with at least a first pin and a second pin having pivoting axes parallel to each other, and also disposed distanced radially from the axis of rotation. The external combustion engine also comprises first and second kinematic connection means suitable to connect respectively the first pin and the second pin to the first piston and respectively to the second piston. The first pin and the second pin are disposed with the respective pivoting axes angularly offset so as to be angled by a desired angular amplitude equal to a first acute angle with respect to the axis of rotation. 19.-. (canceled)10. An external combustion engine comprising:a drive shaft rotating about an axis of rotation,a crank coupled to the drive shaft and having a first pin with a first pivoting axis and a second pin with a second pivoting axis, wherein the first pivoting axis and the second pivoting axis are substantially parallel to each other, the first pin is radially distanced from the axis of rotation by a first distance, the second pin is radially distanced from the axis of rotation by a second distance, and the first distance and second distance are unequal,a first cylinder having a first piston,a first connecting rod connecting the first pin to the first piston,a second cylinder having a second piston, anda second connecting rod connecting the second pin to the second piston, wherein the first cylinder and the second cylinder are offset angularly from each other and in fluid ...

PISTON OF AXIAL PISTON PUMP MOTOR, CYLINDER BLOCK OF AXIAL PISTON PUMP MOTOR, AND AXIAL PISTON PUMP MOTOR

An end part of a piston on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 10% or more and 80% or less of a length of a cylindrical part and a height is 10% or more and 160% or less of a clearance. An end part of a cylinder block on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 8% or more and 60% or less of the length of a cylindrical part and a height is 12% or more and 125% or less of the clearance. 1. A piston of an axial piston pump motor comprising:a cylindrical part having an outer circumferential surface which is slide-fitted to an inner circumferential surface of a piston chamber of a cylinder block so as to be capable of advancing and retreating with a clearance between the outer circumferential surface and the inner circumferential surface, wherein crowning processing performed on a protrusion end part situated on a side protruding from the piston chamber in an axial direction of the outer circumferential surface so as to form, in a cross section in the axial direction of the outer circumferential surface, a 1.2-order to 2.5-order curve within a range in which a length is 10% or more and 80% or less of a length of the cylindrical part and a height is 10% or more and 160% or less of the clearance in case of using a front edge of the protrusion end part as a standard, and', 'crowning processing performed on an insertion end part situated on a side inserted into the piston chamber in the axial direction of the outer circumferential surface so as to form, in the cross section, a 1.2-order to 2.5-order curve within a range in which a length is 10% or more and 60% or less of the length of the cylindrical part and a height is 10% or more and 160% or less of the clearance in case of using a rear edge of the insertion end part as a standard,, 'at least one of'}is performed, anda tilt angle of the end part subjected to the crowning processing is within ...

LINEAR ACTUATOR AND METHOD FOR OPERATING SUCH A LINEAR ACTUATOR

The linear actuator comprises a double-chamber solenoid pump comprising at least one pump coil, a multi-way valve and at least one pump armature that can be moved by energizing the at least one pump coil and is provided with a switching armature by means of which the multi-way valve can be switched and which can be moved by energizing the at least one pump coil. In the method, both the switching armature and the pump armature are moved by energizing the pump coil. 1. A linear actuator comprising: at least one pump coil;', 'a multi-way valve;', 'at least one pump armature that is movable by energizing the at least one pump coil; and', 'a switching armature, by which the multi-way valve is switchable, the switching armature being movable by energizing the at least one pump coil., 'a solenoid pump having2. The linear actuator of claim 1 , wherein the multi-way valve is or exhibits a 4/2-way valve.3. The linear actuator of claim 1 , wherein the multi-way valve is switchable by movement of the switching armature.4. The linear actuator of claim 1 , wherein in the solenoid pump claim 1 , the at least one pump armature is connected or is connectable with a magnetic flow to a pump coil yoke claim 1 , andwherein the switching armature is connected or is connectable with a magnetic flow to the pump coil yoke.5. The linear actuator of claim 1 , wherein the at least one pump coil comprises at least two pump coils claim 1 , each pump coil of the at least two pump coils comprising a pump coil yoke claim 1 , andwherein the pump coil armature is movable between the at least two pump coil yokes.6. The linear actuator of claim 5 , wherein the solenoid pump further comprises at least one flow-conducting device claim 5 , by which the at least two pump coil yokes are connected to one another in a flow-conducting manner.7. The linear actuator of claim 6 , wherein the at least one flow-conducting device and the at least two pump coil yokes are configured in one piece with one another.8. ...

AXIAL PISTON MACHINE

An axial piston machine is shown comprising a cylinder drum rotatable around an axis of rotation and having at least a cylinder, a piston arranged in said cylinder, a swash plate arranged in front of said cylinder drum, said piston being provided with a slipper () resting against said swash plate and having a pressure area () on a side facing said swash plate, wherein a cylinder axis of said cylinder is arranged on a circle line () around said axis of rotation (). Such a machine should be made compact. To this end said pressure area () deviates from a circular form. 1. An axial piston machine comprising a cylinder drum rotatable around an axis of rotation and having at least a cylinder , a piston arranged in said cylinder , a swash plate arranged in front of said cylinder drum , said piston being provided with a slipper resting against said swash plate and having a pressure area on a side facing said swash plate , wherein a cylinder axis of said cylinder is arranged on a circle line around said axis of rotation , characterized in that said pressure area deviates from a circular form.2. The axial piston machine according to claim 1 , characterized in that wherein said pressure area comprises a radially inner border and a radially outer border and said radially inner border has a larger distance to said circle line than said radially outer border.3. The axial piston machine according to claim 2 , characterized in that wherein said radially inner border has a distance to said circle line which is larger than a distance of the circumference of the largest possible circle around said cylinder axis defined by a size of said cylinder drum and the number of cylinders of said cylinder drum.4. The axial piston machine according to claim 1 , characterized in that wherein said pressure area comprises in an area radially outside said circle line at least one enlargement extending in circumferential direction around said axis of rotation.5. The axial piston machine according to ...

LIQUID-PRESSURE ROTATING DEVICE

A cylinder block including plurality of piston chambers formed at intervals in circumferential direction; plurality of pistons fitted in respective piston chambers movable in expanding and contracting directions to reciprocate in the expanding and contracting directions; a valve plate in contact with the cylinder block rear end surface and including first and second ports communicating with piston chambers. A portion of each ports is close to a top dead center switching land formed between first and second ports as a portion having a narrow opening width in a rotation radial direction of the cylinder block. An auxiliary port is formed at the valve plate switching land. Auxiliary port pressure is maintained lower than pressure of a side port that is the first or second port. When the piston chamber lacks communication with the side port (first or second port), the piston chamber and auxiliary port communicate with each other. 1. A liquid-pressure rotating device comprising:a cylinder block provided rotatably and including a plurality of piston chambers formed at intervals in a circumferential direction;a plurality of pistons fitted in the respective piston chambers so as to be movable in an expanding direction and a contracting direction and configured to reciprocate in the expanding direction and the contracting direction; anda valve plate provided in contact with the cylinder block and including a first port, a second port, and a switching land formed between the first port and the second port, the first and second ports communicating with the piston chambers, wherein:a portion of at least one of the first and second ports of the valve plate which portion is located close to the switching land is formed as a narrow portion having a narrow opening width in a radial direction;an auxiliary port is formed at the switching land of the valve plate;pressure of the auxiliary port is maintained lower than pressure of a high pressure side port that is any one of the first ...

OPPOSED SWASH PLATE TYPE FLUID PRESSURE ROTATING MACHINE

An opposed swash plate type fluid pressure rotating machine in which a first piston and a second piston projecting from opposite ends of a rotary cylinder block reciprocate in a cylinder, respectively following a first swash plate and a second swash plate includes a first tilt bearing for tiltably supporting the first swash plate, a first tilt driving piston for tilting the first swash plate in a direction intersecting with an axis of rotation of the cylinder block, a second tilt bearing for tiltably supporting the second swash plate, and a second tilt driving piston for tilting the second swash plate in a direction intersecting with the axis of rotation of the cylinder block. 1. An opposed swash plate type fluid pressure rotating machine in which a first piston and a second piston projecting from opposite ends of a rotary cylinder block reciprocate in a cylinder , respectively following a first swash plate and a second swash plate , comprising:a first tilt bearing for tiltably supporting the first swash plate;a first tilt driving piston for tilting the first swash plate in a direction intersecting with an axis of rotation of the cylinder block;a second tilt bearing for tiltably supporting the second swash plate; anda second tilt driving piston for tilting the second swash plate in a direction intersecting with the axis of rotation of the cylinder block.2. The opposed swash plate type fluid pressure rotating machine according to claim 1 , comprising:a first push-side piston pressure chamber and a first pull-side piston pressure chamber defined on opposite ends of the first tilt driving piston;a first tilt control valve for switching the flow of working fluid supplied to and discharged from the first push-side piston pressure chamber and the first pull-side piston pressure chamber from and to a high-pressure selector valve;a second push-side piston pressure chamber and a second pull-side piston pressure chamber defined on opposite ends of the second tilt driving ...

FLUID PRESSURE ROTATING MACHINE

A piston motor includes a bush in the form of a curved plate held in sliding contact with a back surface of a tiltable swash plate, a supply/discharge passage formed on the casing including a swash plate port formed on the swash plate and open on the back surface of the swash plate and a bush port penetrating through the bush and provided from a piston to the swash plate, and an elastic ring interposed between the casing and the bush and surrounding an opening end of the bush port. 1. A fluid pressure rotating machine in which a piston projecting from a cylinder of a rotary cylinder block reciprocates , following a swash plate housed in a casing , comprising:a bush in the form of a curved plate held in sliding contact with a back surface of the tiltable swash plate;a supply/discharge passage including a swash plate port formed on the swash plate and open on the back surface of the swash plate and a bush port penetrating through the bush and provided from the piston to the swash plate; andan elastic ring interposed between the casing and the bush and surrounding an opening end of the bush port.2. The fluid pressure rotating machine according to claim 1 , further comprising a supporting surface formed on the casing for supporting the bush claim 1 , wherein:the supply/discharge passage includes a casing port formed on the casing and open on the supporting surface; andthe elastic ring surrounds a connected part of the bush port and the casing port.3. The fluid pressure rotating machine according to claim 2 , further comprising a housing groove formed on the casing to surround the casing port and open on the supporting surface claim 2 , wherein:the elastic ring is housed in the housing groove.4. The fluid pressure rotating machine according to claim 3 , wherein:a groove inner surface of the housing groove extends in a normal direction of the supporting surface extending in an arcuate manner.5. The fluid pressure rotating machine according to claim 1 , further comprising ...

HYDRAULIC APPARATUS HAVING AN IMPROVED STRUCTURE FOR ITS COMMISSIONING

The invention relates to a hydraulic apparatus () including: a casing () defining a first assembly; a shaft () defining a second assembly; said first and second assemblies being freely rotatable relative to one another; a multi-lobe cam () rotatably connected to one of said first or second assembly; a dispenser () and a dispenser cover (); a cylinder block () mounted such as to be freely rotatable relative to said first and second assemblies and including a means for rotatably engaging relative to the other of said assemblies, characterized in that the hydraulic apparatus () includes a return means for moving the cylinder block () in order to rotatably disengage same from said first or second assembly, and in that the dispenser () is configured, when applying pressure, to rotatably engage the cylinder block () relative to the other of said first or second assembly. 11. A hydraulic apparatus () with radial pistons , comprising:{'b': '6', 'a casing () defining a first assembly,'}{'b': '2', 'a shaft () defining a second assembly, said first and second assemblies being free in rotation one relative to the other,'}{'b': '3', 'a multilobe cam () connected in rotation to one of said first or second assemblies,'}{'b': 51', '52, 'a distributor () and a distributor lid (),'}{'b': 4', '41', '42', '41', '4', '3', '1', '43', '41', '42', '3, 'a cylinder block () mounted free in rotation relative to said first and second assemblies, and comprising a plurality of cylinders () in which guided pistons () are arranged to slide radially in respective cylinders () of the cylinder block () and supported on the lobes of the cam (), said apparatus () comprises support springs () arranged in said cylinders () so as to keep the pistons () supported against the cam (),'}{'b': 1', '4, 'characterized in that said hydraulic apparatus () also comprises engagement means in rotation adapted, during the application of a command, to immobilise the cylinder block () relative to the other of said first ...

ROTARY PISTON ENGINE WITH EXTERNAL EXPLOSION/EXPANSION CHAMBER

A rotary piston engine with external combustion/expansion chamber is disclosed. According to an aspect, a rotary piston engine includes an intake cylinder/piston block to press air/medium toward a combustion/expansion chamber. The cylinder/piston block includes cylinders, pistons and piston rods. Connected to the cylinder/piston block is a converter wheel, which converts piston movement to rotation of the converter wheel and rotation of the cylinder/piston block. The rotation angle of the converter wheel is different than that of the cylinder/piston block such that the distance between pistons and converter wheel varies according to the displacement. The piston rods are able to displace at the converter wheel in 2 different directions, both going around the converter wheel and sideways compared to the converter wheel. The cylinder/piston block and the converter wheel have the same rotation speed, why all two parts are connected to each other with cogwheels and rods to maintain synchronization. 3. A volume based rotary piston engine according to claim 2 , wherein the exhaust cylinder/piston block has a larger stroke volume compared to the intake cylinder/piston block.4. A volume based rotary piston engine according to claim 2 , wherein the cylinder/piston blocks rotate around the same main rotation axle on ball bearings.5. A volume based rotary piston engine according to claim 2 , wherein a stabilizing rod is arranged between the cylinder/piston blocks.6. A volume based rotary piston engine according to claim 1 , wherein the combustion/expansion chamber comprises a catalyzator.7. Use of an engine according to for any one of pumping of gasses and fluids in different systems for transporting fluids and gasses claim 1 , and producing overpressure and under pressure claim 1 , like in the refrigerator systems.8. Use of an engine according to for any one of movement of cars and other vehicles claim 2 , motorcycles claim 2 , bicycles claim 2 , flying objects claim 2 , and ...

Axial piston machine

An axial piston machine may include a housing, a guide, a shaft, at least two cylinders each delimited by an associated cylinder wall, at least two pistons, a feed configured to supply a working fluid, an exhaust configured to discharge the working fluid, and at least one actuator configured to open and close a plurality of secondary outlets. Each associated cylinder wall may include a primary outlet and a secondary outlet of the plurality of secondary outlets. Each primary outlet and each secondary outlet may be fluidically connected to an outlet chamber that is fluidically connected to the exhaust. Each primary outlet may open into an associated primary outlet channel that opens into the outlet chamber. Each secondary outlet may be fluidically connected to an associated secondary outlet channel that opens into the outlet chamber and is separate from the plurality of primary outlet channels.

PORT PLATE ASSEMBLY FOR HYDRAULIC UNIT

A port plate assembly of a hydraulic unit includes a port plate and a journal bearing. The port plate includes a fixed-speed interface side having a fixed-speed interface surface, and a variable-speed interface side having a variable-speed interface surface. A plurality of kidney-shaped apertures is defined at a kidney pitch diameter about a central bore of the port plate between the fixed-speed interface surface and the variable-speed interface surface. The port plate also includes control cylinder interface formed at a control cylinder radial offset from a central axis of the central bore, where a ratio of the control cylinder radial offset to the kidney pitch diameter is between 1.629 and 1.639. The journal bearing is installed in the central bore of the port plate, where the journal bearing provides an interface for a fixed-speed shaft and a variable-speed shaft of the hydraulic unit. 1. A port plate assembly of a hydraulic unit , the port plate assembly comprising: a fixed-speed interface side having a fixed-speed interface surface;', 'a variable-speed interface side having a variable-speed interface surface;', 'a plurality of kidney-shaped apertures defined at a kidney pitch diameter about a central bore of the port plate between the fixed-speed interface surface and the variable-speed interface surface; and', 'a control cylinder interface formed at a control cylinder radial offset from a central axis of the central bore, wherein a ratio of the control cylinder radial offset to the kidney pitch diameter is between 1.629 and 1.639; and, 'a port plate comprisinga journal bearing installed in the central bore of the port plate, the journal bearing providing an interface for a fixed-speed shaft and a variable-speed shaft of the hydraulic unit.2. The port plate assembly of claim 1 , wherein the control cylinder interface comprises an inner cylinder interface diameter and an outer cylinder interface diameter claim 1 , and a ratio of the outer cylinder interface ...

FLUID PRESSURE ROTARY MACHINE

A fluid pressure rotary machine includes a cylinder block that is fixed to a rotary shaft and includes a plurality of cylinder bores, a piston disposed to be free to slide in each cylinder bore such that a volume chamber is defined thereby, a swash plate that causes the piston to reciprocate such that the volume chamber expands and contracts, and a valve plate that slides against the cylinder block and includes an intake port and a discharge port communicating with the volume chamber. The valve plate includes a sliding surface formed to project in a spherical shape against the cylinder block. The cylinder block includes a sliding surface formed as an indentation corresponding to the shape of the sliding surface of the valve plate. A minute gap is formed between the sliding surface of the valve plate and the sliding surface of the cylinder block in an outer edge position. 1. A fluid pressure rotary machine comprising:a cylinder block that is fixed to a rotary shaft and includes a plurality of cylinder bores;a piston disposed to be free to slide in each cylinder bore such that a volume chamber is defined thereby;a swash plate that causes the piston to reciprocate as the cylinder block rotates such that the volume chamber expands and contracts; anda valve plate that slides against the cylinder block and includes an intake port and a discharge port communicating with the volume chamber,wherein the valve plate includes a sliding surface formed to project in a spherical shape against the cylinder block,the cylinder block includes a sliding surface formed as an indentation corresponding to the shape of the sliding surface of the valve plate, anda minute gap is formed between the sliding surface of the valve plate and the sliding surface of the cylinder block in an outer edge position.2. The fluid pressure rotary machine as defined in claim 1 , wherein the sliding surface of the cylinder block is formed in a spherical shape claim 1 , anda curvature radius of the sliding ...

BANDED CERAMIC VALVE AND/OR PORT PLATE

Valve and/or port plates incorporating or formed entirely of ceramic can each be provided with a reinforcing band. The band, which can optionally be metal, can be placed around the plate to provide additional strength to the plate, thereby allowing for a reduction in the overall diameter and/or thickness of the plates and, thus, the use of less ceramic material. The band can hold the plate in compression and/or be glued to hold the band in place. 1. A rotary axial piston pump comprising:a housing;a swash plate, the swash plate having an inclined surface;a rotor assembly positioned adjacent the swash plate, the rotor assembly comprising a rotor-drum having at least one cylinder bore disposed therein, and having piston(s) disposed within the respective cylinder bore(s), the pistons having a ball-shaped end extending from the cylinder bore(s);at least one slipper interposed between the swash plate and the rotor-drum, the slipper(s) comprising socket joints for accommodating the piston ball-shaped end(s) therein, the slipper(s) having a swash plate interface surface in contact with the swash plate inclined surface and optionally formed from a ceramic material;a port plate positioned adjacent an end block disposed in the housing open end; anda valve plate interposed between the port plate and the rotor-drum;wherein the port and valve plates each have a ceramic surface at an interface thereof; and wherein a reinforcing band is provided surrounding at least a portion of one of the plates to hold the plate in compression.2. The rotary axial piston pump of claim 1 , wherein the reinforcing band is provided surrounding the valve plate.3. The rotary axial piston pump of claim 1 , wherein the reinforcing band is provided surrounding the port plate.4. The rotary axial piston pump of claim 1 , wherein the reinforcing band is provided surrounding the valve plate and a second reinforcing band is provided surrounding the port plate to hold the port plate in compression.5. The rotary ...

PISTON AND SLIPPER ASSEMBLY FOR HYDRAULIC UNIT

A piston and slipper assembly of a hydraulic unit includes a slipper and a piston. The slipper includes a swashplate interface having a balance land and a piston ball socket extending to a ball engagement end, where a slipper length is defined between the balance land and the ball engagement end. The piston includes a piston ball member having a ball and a piston body. The ball engages with the piston ball socket. The piston body is coaxially fixed within a piston sleeve. The piston sleeve defines a piston diameter, and a piston length is defined between a centroid of the ball and a piston end face. A ratio of the piston diameter to the slipper length is between 1.35 and 1.42, and a ratio of the piston length to the piston diameter is between 2.51 and 2.55. 1. A piston and slipper assembly of a hydraulic unit , the piston and slipper assembly comprising:a slipper comprising a swashplate interface having a balance land and a piston ball socket extending to a ball engagement end, wherein a slipper length is defined between the balance land and the ball engagement end; anda piston comprising a piston ball member having a ball and a piston body, the ball engages with the piston ball socket, the piston body is coaxially fixed within a piston sleeve, wherein the piston sleeve defines a piston diameter, a piston length is defined between a centroid of the ball and a piston end face, a ratio of the piston diameter to the slipper length is between 1.35 and 1.42, and a ratio of the piston length to the piston diameter is between 2.51 and 2.55.2. The piston and slipper assembly of claim 1 , wherein a piston ball socket centroid offset is defined between the balance land and a centroid of the piston ball socket claim 1 , and a ratio of the slipper length to the piston ball socket centroid offset is between 1.33 and 1.43.3. The piston and slipper assembly of claim 1 , wherein a ratio of the piston length to the slipper length is between 3.43 and 3.59.4. The piston and slipper ...

Axial Piston Machine Utilizing A Bent-Axis Construction

A hydrostatic axial piston machine () has a cylinder barrel () with a plurality of piston bores having pistons () fastened in an articulated manner to a drive flange (). For articulated fastening of the pistons () to the drive flange (), ball joints () are provided that are formed by a spherical cap-shaped receptacle socket () in an end surface () of the drive flange () and a ball head () that is operatively connected with the piston (). The receptacle sockets () are each in the form of hemispheres that extend to the ball equator, and on one end surface () of the drive flange (), in the vicinity of the receptacle sockets (), there is a retaining web () that extends beyond the ball equator of the hemisphere to grip the ball head () at an angle of greater than 180°. 1. A hydrostatic axial piston machine with a bent-axis construction , comprising:{'sub': 't', 'a drive shaft located inside a housing and rotatable around an axis of rotation (R),'}{'sub': 't', 'a drive flange located inside the housing and rotatable around an axis of rotation (R),'}{'sub': 'Z', 'a cylinder barrel located inside the housing and rotatable around an axis of rotation (R), wherein the cylinder barrel includes a plurality of piston bores,'}a longitudinally displaceable piston located in each piston bore, wherein the pistons are fastened in an articulated manner to the drive flange; andball joints for articulated fastening of the pistons to the drive flange, wherein the ball joints include a spherical cap-shaped receptacle socket in an end surface of the drive flange and a ball head operatively connected with the piston, andwherein the receptacle sockets comprise hemispheres that extend to a ball equator, and wherein on an end surface of the drive flange, in a vicinity of the receptacle sockets, there is a retaining web that extends beyond the ball equator of the hemisphere to grip the ball head at an angle of greater than 180°.2. The hydrostatic axial piston machine as recited in claim 1 , ...

Axial Piston Machine Utilizing A Bent-Axis Construction With Slippers On The Drive Flange

A hydrostatic axial piston machine () utilizing a bent-axis construction has a driveshaft () with a drive flange () rotatable around an axis of rotation (R) inside a housing (). A cylinder barrel () has pistons () fastened in an articulated manner to the drive flange (). The drive flange () is supported on a housing-side slide face () by an axial bearing () in the form of a hydrostatically relieved sliding bearing () having a plurality of slippers (). Each of the slippers () is mounted in an articulated manner in the drive flange () so that when the drive flange () rotates, a compensating force (F) acts on the slipper () which is in the opposite direction to the centrifugal force (F) acting on the slipper (). The point of application (AP) of the compensating force (F) on the slipper () is selected so that there is no tipping moment on the slipper () or to compensate for some or all of any tipping moment that does occur. 1. A hydrostatic axial piston machine utilizing a bent-axis construction , comprising:a driveshaft with a drive flange rotatable around an axis of rotation inside a housing;a cylinder barrel located inside a housing and rotatable around an axis of rotation, wherein the cylinder barrel includes a plurality of piston bores;a longitudinally displaceable piston located in each piston bore, wherein the pistons are fastened in an articulated manner to the drive flange, and wherein the drive flange is supported on a housing-side slide face by an axial bearing comprising a hydrostatically relieved sliding bearing having a plurality of slippers, each of which is mounted in an articulated manner in the drive flange and includes a pressure pocket on an end surface facing the slide face wherein the pressure pocket is in communication with an associated displacement chamber of the axial piston machine, wherein each of the slippers is mounted in an articulated manner in the drive flange so that when the drive flange rotates, a compensating force acts on the ...

Axial Piston Machine Utilizing A Bent-Axis Construction With A Drive Joint For Driving The Cylinder Barrel

A hydrostatic axial piston machine () utilizing a bent-axis construction has a drive shaft () with a drive flange () rotatable around an axis of rotation (R) inside a housing (). A cylinder barrel () is located inside the housing () and is rotatable around an axis of rotation (R). A drive joint () is located between the drive shaft () and the cylinder barrel (). The drive joint () has at least one drive body (M M M M) in the form of a slider or a roller body which is supported in the drive shaft () and the cylinder barrel (). A lubrication device () is provided for the drive joint () and supplies lubricant from a lubricant port () located on the housing () of the axial piston machine () to the drive bodies (M M M M) for cooling and lubrication of the drive bodies (M M M M). 1. A hydrostatic axial piston machine with a bent-axis construction , comprising:a drive shaft rotatable around an axis of rotation inside a housing, wherein the drive shaft includes a drive flange;a cylinder barrel located inside the housing and rotatable around an axis of rotation, wherein the cylinder barrel includes a plurality of piston bores;a longitudinally displaceable piston located in each piston bore, wherein the pistons are fastened in an articulated manner to the drive flange;a drive joint for driving the cylinder barrel located between the drive shaft and the cylinder barrel, wherein the drive joint, includes at least one drive body comprising a slider or a roller body supported on the drive shaft and the cylinder barrel; anda lubrication device to supply lubricant from a lubricant port located on the housing to the drive bodies for cooling and lubrication of the drive bodies.2. The hydrostatic axial piston machine as recited in claim 1 , wherein the lubrication device is located in the drive shaft and includes a lubricant channel located in the drive shaft.3. The hydrostatic axial piston machine as recited in claim 2 , wherein the lubricant channel includes a lubricant supply ...

CYLINDER BLOCK AND SWASH PLATE TYPE LIQUID-PRESSURE ROTATING APPARATUS INCLUDING SAME

A cylinder block includes: a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; and a cooling portion, wherein the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block. 1. A cylinder block comprising:a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; anda cooling portion, whereinthe cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.2. The cylinder block according to claim 1 , wherein each of the cooling holes is inclined so as to penetrate the cylinder block from the piston insertion end surface toward an outer peripheral surface of the cylinder block.3. The cylinder block according to claim 1 , wherein each of the cooling holes includes:a linear portion extending in parallel with the cylinder bore; anda drain hole portion extending from a position of the linear portion toward an outer peripheral surface of the cylinder block and being open on the outer peripheral surface, the position being located away from the piston insertion end surface.4. A cylinder block comprising:a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the ...

Apparatus for Increasing Efficiency in Reciprocating Type Engines

A reciprocating internal combustion engine is disclosed having co-axially aligned cylinder blocks within a housing, each cylinder block having a piston structure comprising a piston head and a connecting rod. The piston heads are adapted to reciprocate within their respective cylinder blocks. The connecting rods are connected to opposite ends of a central yoke structure, pivotally, with the ability to angularly deviate from a longitudinal axis during a cycle of motion. The central yoke structure consists of a roller gear disposed within a void of the central yoke structure, and the linear motion of the piston structure is translated into the rotary motion of the roller gear. 1. A reciprocating internal combustion engine comprising:a. a housing;b. a pair of co-axially aligned cylinder blocks in the housing;c. a piston structure located within each of the pair of co-axially aligned cylinder blocks, wherein each of the piston structures comprises a connector rod and a piston head;d. a central yoke structure, wherein each piston structure is pivotally connected to an opposite end of the central yoke structure; ande. a roller gear disposed within a void of the central yolk structure.2. The reciprocating internal combustion engine of claim 1 , wherein the piston structure moves in a linear manner within the co-axially aligned cylinder blocks.3. The reciprocating internal combustion engine of claim 1 , wherein the pivotal connection of the connector rods to the opposite ends of the central yoke structure is by means of a wrist pin.4. The reciprocating internal combustion engine of claim 3 , wherein the pivotal connection between the opposite ends of the central yoke structure and the respective connector rods allows an angular deflection from a longitudinal axis claim 3 , during one cycle of motion.5. The reciprocating internal combustion engine of claim 4 , wherein the angular deflection is within the range of 0-10 degrees claim 4 , during one cycle of motion.6. The ...

Hydraulic Actuator

A hydraulic actuator includes a cylinder, a pump, an electric motor and a central block. The mechanism or the rotating parts of the pump are directly installed in an interior of the block, and the drive shaft of the pump is correspondingly mounted in walls or in covers of the block. 1. A hydraulic actuator comprising:a cylinder including a movable piston having a first piston rod, the cylinder configured to be supplied by a pump which is driven by an electric motor, anda hydraulic control block, in or on which connections for the pump and the cylinder are formed, the hydraulic control block defining channels inside the hydraulic control block that interconnect the connections,wherein the pump is arranged in an interior of the hydraulic control block.2. The actuator according to claim 1 , wherein the pump is an axial piston pump having a swash plate design claim 1 , the pump having a drive shaft that penetrates the interior and is mounted in the control block by a respective bearing on each side of the drive shaft.3. The actuator according to claim 2 , wherein the hydraulic control block defines a through-opening that is coaxial with the drive shaft and through which the drive shaft is connected to the electric motor or to a coupling claim 2 , by means of which the electric motor is configured to be coupled to the pump.4. The actuator according to claim 3 , wherein the hydraulic control block comprises:a main body, in which the interior is defined; andone or two covers that close the interior.5. The actuator according to claim 4 , wherein the through-opening is defined in a cover of the one or two covers.6. The actuator according to claim 5 , wherein the cover comprises a mounting face claim 5 , to which the electric motor or a support for the electric motor is attached.7. The actuator according to claim 4 , further comprising:a storage device attached to a cover of the one or two covers,wherein a storage channel is defined penetrating the cover.8. The actuator ...

SWASH-PLATE HYDRAULIC MOTOR OR SWASH-PLATE HYDRAULIC PUMP

The present invention addresses the problem of providing a swash-plate hydraulic motor or a swash-plate hydraulic pump having a structure in which the swash plate can be stably held without mounting a shoe to the swash plate-side end of a tilt control piston. An example of the embodiment of the present invention is a swash-plate hydraulic motor (). A spherical section () is integrally formed on the swash plate-side end surface of a tilt piston (), and a groove () into which the spherical section () is fitted in a slidable manner is formed in the support surface () (second support surface ()) of the swash plate (). The groove () is a part of the second support surface () and has a shape having a predetermined width and having a longitudinal direction which is oriented perpendicularly to the direction which connects two pivots (). 1. A swash-plate hydraulic motor or a swash-plate hydraulic pump comprising:a main body casing;a rotation axis housed in the main body casing;a cylinder block attached to the rotation axis;cylinder holes formed in the cylinder block;pistons slidably inserted into the cylinder holes;shoes attached to leading ends of the pistons;a swash plate including a slope on which the shoes slide and a supported surface which is formed on the side opposite to the slope and is supported by the main body casing via two pivots;a tilt piston which is in contact with the supported surface of the swash plate and is configured to tilt the swash plate by pressing the swash plate toward the pistons; anda cylinder hole for the tilt piston, which is formed in the main body casing and to which the tilt piston is slidably inserted,a spherical surface member being formed at an end face on the swash plate side of the tilt piston in an integrated manner, a recess with which the spherical surface member is slidably engaged being formed in the supported surface of the swash plate.2. The swash-plate hydraulic motor or the swash-plate hydraulic pump according to claim 1 , ...

AXIAL PISTON MOTOR AND METHOD FOR OPERATION OF AN AXIAL PISTON MOTOR

An axial piston motor with inner continuous combustion burns a compressed combustion medium with fuel in a continuously operating combustion chamber to form a working medium, the working medium is supplied to cyclical working cylinders in order to extract mechanical energy, and the mechanical energy extracted in the working cylinders is also used for the compression of the combustion medium. The compression is carried out in two steps or at a compression end temperature of less than 300° C. with a compression ratio of more than 10 and/or a rotating distributor includes at least two distributor openings which cyclically open and close the firing connections and/or are cyclically guided past or through firing channels. 110203041423025203021204142207241414273424142. An axial piston motor () with internal continuous combustion , having a continuously operating combustion chamber () , having at least two working cylinders () , and having at least two compressor cylinders ( , ) driven by the working cylinders () , wherein firing connections () between the continuously working combustion chamber () and the working cylinders () can be cyclically closed and opened , and wherein a combustion medium feed line () for supplying compressed combustion medium to the continuously working combustion chamber () is provided between the compressor cylinders ( , ) and the combustion chamber () , wherein an outlet () of a first compressor cylinder () of the two compressor cylinders ( , ) is connected with an inlet () of a second compressor cylinder () of the two compressor cylinders ( , ).210714175744221. The axial piston motor () according to claim 1 , wherein an inlet () of the first compressor cylinder () is connected with a combustion medium inlet () claim 1 , and an outlet () of the second compressor cylinder () is connected with the combustion medium feed line ().31042424141. The axial piston motor () according to claim 1 , wherein the second compressor cylinder () has a cylinder ...

A fluid motor and a fluid pump

A fluid machine for a pneumatic or hydraulic drive system, said fluid machine being able to work as a fluid motor or as a fluid pump, comprising: at least two piston assemblies each comprising a piston means ( 110 a - c ), the at least two piston assemblies being operable to cause sequential reciprocating movement of the pistons means ( 110 a - c ); a drive member ( 120 ) rotatable about an axis and providing an annular, wave-like surface ( 122 ) extending at least partially radially to the axis, towards which the piston means ( 110 a - c ) project, wherein, in case of working as a fluid motor, the pistons means ( 110 a - c ) are arranged to drive rotation of the drive member ( 120 ) about the axis at least by a pushing action on said wave-like surface ( 122 ) or, in the case of working as a fluid pump, the piston means ( 110 a - c ) are arranged to cooperate with said wave-like surface ( 122 ) so that rotation of the drive member ( 120 ) drives sequential reciprocating motion of the piston means ( 110 a - c ).

AXIAL PISTON MACHINE

The invention relates to an axial piston machine comprising a drive shaft, a driving gear non-rotatably connected thereto with one or more driving gear pistons accommodated therein, whose piston stroke is adjustable by a swash plate, wherein at least one return spring acts on the swash plate and at least one adjusting piston is supported on the swash plate via an adjusting lever, a first and/or second stop is provided for the adjusting piston to limit the swivel angle of the swash plate, wherein a first stop is formed by the bottom of the blind hole within the connecting plate and/or a second stop is formed by a flat protrusion of the housing in the vicinity of the blind hole. 1. An axial piston machine comprising a drive shaft , a cylinder drum non-rotatably connected thereto and comprising one or more driving gear pistons accommodated therein , whose piston stroke is adjustable by a swash plate , wherein at least one return spring acts on the swash plate and at least one adjusting piston is supported on the swash plate via an adjusting lever ,wherein a first and/or second stop is provided for the adjusting piston to limit the swivel angle of the swash plate, wherein a first stop is formed by the bottom of the blind hole within the connecting plate and/or a second stop is formed by a flat protrusion of the housing in the vicinity of the blind hole.2. The axial piston machine according to claim 1 , wherein in every functional position of the adjusting piston the longitudinal axis of the adjusting piston is aligned almost parallel to the drive shaft axis M and that the at least one adjusting piston is guided in a bore in the connecting plate.311. The axial piston machine according to claim 2 , wherein the drive shaft axis M claim 2 , the longitudinal axis of the adjusting piston and the longitudinal axis of the adjusting lever are located on a plane E claim 2 , including on a half-plane E* proceeding from the drive shaft axis M.411. The axial piston machine according ...

HYDRAULIC PUMP

A pump may generally include a frame including a reservoir. The reservoir stores a hydraulic fluid. The pump may also include a motor assembly supported by the frame and a pump assembly operably driven by the motor assembly. The pump assembly is in fluid communication with the reservoir and configured to dispense the hydraulic fluid out of the frame. The pump assembly includes a first piston and a second piston, wherein the first piston dispenses hydraulic fluid out of the frame between a first pressure and a second pressure greater than the first pressure, and the second piston dispenses hydraulic fluid out of the frame between the first pressure and a third pressure, the third pressure being greater than the second pressure. 1. A pump comprising:a frame including a reservoir, wherein the reservoir stores a hydraulic fluid;a motor assembly supported by the frame;a pump assembly operably driven by the motor assembly, the pump assembly in fluid communication with the reservoir and configured to dispense the hydraulic fluid out of the frame, the pump assembly includes a first piston and a second piston, the first piston dispensing hydraulic fluid out of the frame between a first pressure and a second pressure greater than the first pressure, and the second piston dispensing hydraulic fluid out of the frame between the first pressure and a third pressure, the third pressure being greater than the second pressure.2. The pump of claim 1 , wherein a brushless motor drives the motor assembly.3. The pump of claim 1 , wherein the motor assembly includes a stator and a rotor supported for rotation relative to the stator.4. The pump of claim 1 , wherein the motor assembly includesa shaft connected to a rotor and the pump assembly, the shaft transmitting power from the rotor to the pump assembly; andan eccentric member couple to the shaft proximate the pump assembly, the eccentric member selectively engaging one or more pistons of the pump assembly.5. The pump of claim 1 , ...

ADAPTATION OF A HYDRAULIC MOTOR

The invention relates to a hydraulic axial piston machine () of dry case type of construction, whose case () is provided for connection to a gearing case () so as to form a fluid-tight overall case. The case () has openings () which permit the passage of leakage hydraulic fluid or of lubricant into the gearing case (). By means of this design, splashing losses of the axial piston machine () are eliminated, and the leakage hydraulic fluid or the lubricant serve for the lubrication both of the axial piston machine () and of the gearing (). 11243542678456792102118531102. Hydraulic axial piston machine () of dry case type of construction , having a case () for accommodating a drive assembly () which can be adjusted by means of an adjustment device () and which serves for delivering hydraulic liquid , and having a drive shaft () which is operatively connected to the drive assembly () and which is mounted in the case () by means of bearings ( , ) so as to be rotatable about its longitudinal axis () , wherein neither the drive assembly () , the drive shaft () nor the bearings ( , ) thereof run in a sump () of the hydraulic liquid , and the case () has openings () , via which leakage hydraulic liquid and lubricant can flow out of the case () , and a fastening flange () , which is arranged , transversely with respect to the longitudinal axis () of the drive shaft () , between the adjustment device () of the axial piston machine () and the openings () in the case ().2121351455122. Axial piston machine according to claim 1 , having a first bearing region () and a second bearing region () which are provided on the drive shaft () for the purpose of accommodating rolling or plain bearings claim 1 , and having a drive input/output region () which is arranged on the drive shaft () claim 1 , for the purposes of driving or extracting power from the drive shaft () claim 1 , wherein the first bearing region () is arranged within the case ().3141213. Axial piston machine according to ...

Axial piston motor and method for operation of an axial piston motor

To provide an axial piston motor, comprising at least one main burner, which has at least one main combustion space and at least one main nozzle space, and comprising at least one pre-burner, which has at least one pre-combustion space and at least one pre-nozzle space, wherein the pre-combustion space is connected to the main nozzle space by way of at least one hot gas feed, that has improved operating and control characteristics even under non-steady-state operating conditions, the pre-nozzle space of the pre-burner has at least one auxiliary hot gas feed.

Hybrid drive system for a motor vehicle, and method of operating a motor vehicle

A hybrid drive system for a motor vehicle, and a method for operating a motor vehicle. The hybrid drive system includes an amplidyne-type generator and a counterpoise engine to provide the power required for charging the storage batteries and providing supplemental drive energy (acceleration) to the motor vehicle.

HYDRAULIC ROTATING MACHINE

A piston pump includes a first biasing mechanism configured to bias a swash plate in accordance with supplied control pressure, a second biasing mechanism configured to bias the swash plate against the first biasing mechanism, and a regulator configured to control the control pressure led to the first biasing mechanism in accordance with discharge pressure of the piston pump, wherein the second biasing mechanism has a pressure chamber to which the discharge pressure is led, and a control piston configured to be biased toward the swash plate by the discharge pressure led to the pressure chamber, and the regulator has a biasing member configured to bias the control piston toward the swash plate, and a control spool configured to be moved in accordance with biasing force of the biasing member, the control spool being configured to adjust fluid pressure. 1. A hydraulic rotating machine , comprising:a cylinder block configured to be rotated following rotation of a drive shaft;plural cylinders formed in the cylinder block and arranged at predetermined intervals in the circumferential direction of the drive shaft;pistons slidably inserted into the cylinders and configured to partition capacity chambers inside the cylinders;a swash plate configured to let the pistons reciprocate so that the capacity chambers are expanded and contracted following rotation of the cylinder block;a first biasing mechanism configured to bias the swash plate in accordance with supplied control pressure;a second biasing mechanism configured to bias the swash plate against the first biasing mechanism; anda regulator configured to control the control pressure led to the first biasing mechanism in accordance with self-pressure of the hydraulic rotating machine, whereinthe second biasing mechanism has:a pressure chamber to which the self-pressure is led; anda control piston configured to be biased toward the swash plate by the self-pressure led to the pressure chamber, andthe regulator has:a biasing ...