УПЛОТНИТЕЛЬНАЯ ПРОКЛАДКА (ВАРИАНТЫ), ДВИГАТЕЛЬ С ОДНИМ ИЛИ БОЛЕЕ КЛАПАНОМ, УПРАВЛЯЕМЫМ ШТАНГОЙ ТОЛКАТЕЛЯ, И СПОСОБ СБОРКИ ЧАСТИ УЗЛА ДВИГАТЕЛЯ (ВАРИАНТЫ)

Прокладка 48 (54) для уплотнения нижнего корпуса относительно верхнего корпуса в двигателе 10, имеющем коромысло 32, выполненное с возможностью качания вокруг оси 36, и штангу 44 толкателя, проходящую от нижнего корпуса 34 (14) к верхнему корпусу 42 (34) и зацепляющуюся с концом коромысла. Прокладка 48 включает в себя уплотняющий участок 56, предназначенный для уплотнения, по меньшей мере, участка верхнего корпуса относительно нижнего корпуса, и несущий штангу толкателя участок 60, проходящий наружу от уплотняющего участка 56 и предназначенный для зацепления со штангой 44 толкателя. По меньшей мере, часть участка зацепления со штангой толкателя выполнена из материала, который мягче материала штанги толкателя. Даны варианты прокладки, двигатель с прокладкой и способы сборки узла двигателя. Такое выполнение упрощает сборку. 10 н. и 19 з.п. ф-лы, 4 ил.

СИНХРОННОЕ УСТРОЙСТВО ПРИВОДА С НЕКРУГЛЫМИ ЭЛЕМЕНТАМИ ПРИВОДА

... 1. Синхронное устройство привода, содержащее удлиненную конструкцию привода в виде бесконечного ремня (10), имеющую множество зацепляющихся секций (15); множество роторов, содержащих, по меньшей мере, первый и второй роторы (11, 12), первый ротор (11), имеющий множество зубьев (16) для сцепления с секцией (15) удлиненной конструкции привода (10), и второй ротор (12), имеющий множество зубьев (16) для сцепления с секцией (15) удлиненной конструкции привода (10); вращающийся узел нагрузки (26), соединенный со вторым ротором (12); при этом удлиненная конструкция привода охватывает первый и второй роторы, причем первый ротор (11) осуществляет привод удлиненной конструкции (10), а второй ротор (12) приводится в движение удлиненной конструкцией (10); один из роторов имеет некруговой профиль (19) имеющий, по меньшей мере, две выступающих части (22, 23), чередующиеся с отступающими частями (24, 25); вращающийся узел нагрузки (26), выполненный таким образом, что, когда он вращается, он представляет ...

УСТРОЙСТВО ГИДРАВЛИЧЕСКОГО ПРУЖИННОГО ПРИВОДА

... 1. Система энергоэкономичного двигателя, содержащая: ! поворотный распределительный вал; ! множество кулачковых элементов, отстоящих по оси по длине распределительного вала и прикрепленных к распределительному валу для поворота вместе с ним; ! при этом каждый из кулачковых элементов имеет сторону, расстояние которой от центра вращения кулачкового элемента изменяется между максимальным расстоянием и минимальным расстоянием; ! множество коромысел, каждое из которых отслеживает каждый из кулачков, и которые на первом конце шарнирно прикреплены ко входу гидравлической энергии и на втором конце соединены с растягиваемым/сжимаемым устройством силового блока; и ! коленчатый вал, имеющий участок колена для соединения с каждым устройством силового блока, приводимым в действие с возможностью поворота приложением усилия к первому и, по меньшей мере, одному коромыслу путем поворота распределительного вала и возвратно-поступательного движения устройства силового блока. ! 2. Система по п.1, в которой ...

УСТРОЙСТВО ДЛЯ СНИЖЕНИЯ ТОРСИОННОЙ НАГРУЗКИ НА КУЛАЧКОВОЙ ВАЛ

Verfahren und Vorrichtung zur Verarbeitung von mit Natrium gefüllten Hohlkörpern

ZYLINDERKOPFDECKELSTRUKTUR FÜR EINEN MOTOR

Eine Zylinderkopfdeckelstruktur für einen Motor 1 umfasst einen Zylinderkopfdeckel 5. Der Zylinderkopfdeckel 5 umfasst ein Metalldeckelement 61, das ein Ende des Zylinderkopfdeckels 5 in einer Motorlängsrichtung und einen Teil neben dem einen Ende bildet; und ein Kunststoffdeckelelement 62, das einen Teil des Zylinderkopfdeckels 5 bildet, der nicht das Metalldeckelement 61 ist. Das Metalldeckelement 61 ist mit Nockenwinkelsensorbefestigungen 61a und 61b versehen, an denen Nockenwinkelsensoren 71 und 72 befestigt sind, wobei die Nockenwinkelsensoren 71 und 72 eine Drehposition der Nockenwellen 11 und 12 des Motors 1 erfassen.

Stößelstangenführung

Eine Führung zur Verwendung in einem Fahrzeugmotor mit einem Motorblock, einem Zylinderkopf und einer Zylinderkopfdichtung. Die Führung umfasst einen Ventilheberhalteteil, einen Stößelstangenhalteteil, der über eine oder mehrere Öffnungen mit dem Ventilheberhalteteil in Verbindung steht, und einen Ausrichtungs- und Befestigungsteil, der sich von dem Stößelstangenhalteteil erstreckt und dazu konfiguriert ist, durch Kontakt mit der Zylinderkopfdichtung festgehalten zu werden.

Brennkraftmaschine, insbesondere mit Leichtbrennstoffen betriebene Sechstaktmaschine mit einem zusaetzlichen Spuel- bzw. Kuehlhub

Brennkraftmaschine mit Direkteinspritzung

The invention relates to an internal combustion engine, especially a spark injection engine, comprising admission valves (20) and a fuel injection device (40) arranged and configured in such a way that it injects fuel (42) directly into a combustion chamber (16) of the working cylinders (14) of the internal combustion engine.The admission valves (20) are provided, at least in the area of a groove (68) thereof, with a surface which is configured in such a way that it counteracts coking. .

Camshaft adjuster for changing relative angle position of camshaft opposite to crankshaft of internal combustion engine, has actuator actuating hydraulic valve and fastened to housing element by screw-free fastening element

The adjuster (1) has an actuator (3) actuating a hydraulic valve and fastened to a housing element (5) by a fastener (4). The fastener is formed as a screw-free fastening element and a bayonet joint. The bayonet joint comprises two radially outwardly extending projection parts that are arranged under associated hook-shaped holders formed at the housing element. A spring element is arranged between the projection parts and the hook-shaped holders, and produces spring force in direction of an axle (8) of the actuator.

Modul mit vororientierter Nockenwelle

Modul aufweisend ein Aufnahmeelement 1, insbesondere in Form eines Lagerrahmens oder einer Abdeckhaube, zur Anordnung auf einem Zylinderkopf einer Brennkraftmaschine und aufweisend mindestens eine in dem Aufnahmeelement 1 drehbar gelagerte Nockenwelle, die zur Halterung eines Nockenwellenrades 3 aus einer Stirnseite des Aufnahmeelementes 1 heraus ragt und wobei das Modul für die unmittelbare Montage auf dem Zylinderkopf vorkonfektioniert ist, wobei für die Vorkonfektionierung die Nockenwelle in einer für die Beaufschlagung der Ventile korrekten Winkelstellung durch ein von außen zugängliches Sicherungsteil 5 gegen Drehung verriegelt ist, wobei das Sicherungsteil 5 eine erste Ausnehmung 7 im Nockenwellenrad 3 durchgreift und im Formschluss gegen Verdrehung mit einer im Aufnahmeelement 1 vorgesehenen Aufnahme 9 angeordnet ist, wobei das Sicherungsteil 5 nach der Montage des Moduls auf dem Zylinderkopf aus der verriegelnden Position entfernbar ist.

Hydraulischer Nockenwellenversteller, Verwendung sowie Verfahren zur Montage eines zumindest zweiteiligen Rotors eines hydraulischen Nockenwellenverstellers

Es ist ein hydraulischer Nockenwellenversteller (1) mit einem zumindest auf einer Nockenwelle (8) drehfest verbundenen zweiteiligen Rotor (2) offenbart. Der zumindest zweiteilige Rotor (2) ist um eine Achse (A) drehbeweglich und besteht aus einem ersten Rotorelement (4) und einem zweiten Rotorelement (6). Erfindungsgemäß sind ausschließlich vermittels eines Schraubverbands (10) das erste Rotorelement (4) und das zweite Rotorelement (6) gegen die Nockenwelle (8) kraftschlüssig axial vorgespannt.

Vormontierter Zugmitteltrieb mit Montagehilfe

Synchronantriebsvorrichtung

Grünling einer Stator-Deckel-Einheit

Grünling (1) einer Stator-Deckel-Einheit (2) für eine Nockenwellenversteller-Einheit (3) zumindest aufweisend- einen ersten Teilgrünling (4) als Stator (5) aus einem ersten Sinterwerkstoff (6) mit jeweils einer, in eine axiale Richtung (7) weisenden ersten Stirnseite (8) und zweiten Stirnseite (9) und dazwischen einer Mehrzahl von Stegen (10) mit lateralen Stegflanken (11), wobei sich die Stege (10) ausgehend von einer in einer Umfangsrichtung (12) umlaufenden äußeren Statorwand (13) in einer radialen Richtung (14) nach innen erstrecken und in der Umfangsrichtung (12) voneinander beabstandet sind, so dass die Statorwand (13) jeweils zwischen den Stegen (10) eine Innenumfangsfläche (15) ausbildet, und- einen zweiten Teilgrünling (16) als Deckel (17) aus einem zweiten Sinterwerkstoff (18), der eine in der Umfangsrichtung (12) umlaufende Außenumfangsfläche (19) aufweist und der an der ersten Stirnseite (8) des Stators (5) angeordnet ist und einen ersten Bereich (20) zumindest teilweise überdeckt ...

Maximum valve-lift measurement method e.g. for a petrol powered combustion engine gas-exchange valve

A procedure for measuring the maximum valve lift in a combustion engine gas exchange valves (2), in which in each valve operation the maximum valve lift is measured (1), followed by count-enabling an incremental counter after each valve lift measurement, and the state of the incremental counter is then checked by a unit (control function) (4) utilising the maximum valve lift, prior to use of the maximum valve lift. With the state of the incremental counter unchanged from the last use of the maximum valve lift by the unit, the last used value of the maximum valve lift is used as the relevant or current value. With the state of the incremental counter changed from the last use of the maximum valve lift, a new value of the maximum valve lift is read-out/selected and used as the relevant or current value. The incremental counter is count-enabled to 0 after the maximum counter state, specifically 255, is reached.

Antriebsrad zur Aufnahme eines Verstellergetriebes mit optimierter Ölführung

Die Erfindung betrifft ein Antriebsrad 10, 30, 53, 64, aufweisend einen Grundkörper 17, 37 mit einem zylindrischen Fortsatz 16, 36 zur Aufnahme eines Nockenwellenverstellergetriebes 56, 66. Zur Vereinfachung des Verstellergetriebes, wird vorgeschlagen die Ölführung mit den Befestigungsmitteln des Verstellergehäuses zu kombinieren. Dies wird dadurch erreicht, dass der zylindrische Fortsatz 16, 36 wenigstens eine Aufnahme 12, 32, insbesondere für ein Befestigungsmittel 43, ausbildet und diese Aufnahme 12, 32 zum Auffangen und/oder Ablassen von Schmiermittel, insbesondere Öl, des Verstellergetriebes 56, 66 vorgesehen ist. Es ergeben sich insbesondere Vorteile bei der Herstellung des Antriebsrades 10, 30, 53, 64.

Nockenwellenversteller

Nockenwellenversteller (1) für eine Brennkraftmaschine, umfassend ein in einem Gehäuse angeordnetes, eine Stellwelle (8) aufweisendes Verstellgetriebe (6), wobei das Gehäuse fest mit einem Antriebsrad (4) eines Zugmittelgetriebes verbunden ist, und wobei eine Wandung des Gehäuses als zur Nockenwelle (3) konzentrische Lagerhülse (5) ausgebildet ist, die durch eine Zylinderkopfwandung (2) geführt ist, wobei ein zwischen der Nockenwelle (3) und der Lagerhülse (5) gebildeter Ringspalt (13) innerhalb des Zylinderkopfes und das mit der Lagerhülse (5) verbundene Antriebsrad (4) außerhalb des Zylinderkopfes angeordnet ist, wobei die Stellwelle (8) mittels eines Kugellagers (10) im Verstellgetriebe (6) gelagert ist, welches sich zwischen den beiden Stirnseiten des Antriebsrades (4) befindet, dadurch gekennzeichnet, dass die Lagerhülse (5) gegenüber der Zylinderkopfwandung (2) durch einen Dichtring (7) abgedichtet ist, dessen Innendurchmesser (D7i) geringer als ein Außendurchmesser (D9a) eines die ...

Verfahren zur Herstellung einer Baugruppe aus einer Ankerplatte und einem Stößel

Vorrichtung zum gleichzeitigen Zusammendruecken der Ventilfedern an Brennkraftmaschinen

Schiebenockensystem und Motor

Die Erfindung betrifft ein Schiebenockensystem für eine Brennkraftmaschine mit wenigstens einer Nockenwelle (10) umfassend eine Trägerwelle (11) mit wenigstens zwei Schiebenockenelementen (12a, 12b), die jeweils eine Schaltkulisse (13) mit wenigstens einer Schaltnut (14) umfassen, wobei die Schiebenockenelemente (12a, 12b) durch wenigstens einen Aktuator-Pin (15) axial zur Trägerwelle (11) verschiebbar sind und wenigstens ein Verstellelement (16) parallel zu einer Längsachse der Trägerwelle (11) angeordnet ist, wobei das Verstellelement (16) in Richtung der Längsachse der Trägerwelle (11) axial verschiebbar ist. Das Schiebenockensystem zeichnet sich dadurch aus, dass das Verstellelement (16) wenigstens zwei Kopplungs-Pins (17a, 17b) aufweist, wobei ein erster Kopplungs-Pin (17a) im Bereich des ersten Schiebenockenelements (12a) angeordnet ist und ein zweiter Kopplungs-Pin (17b) im Bereich des zweiten Schiebenockenelements (12b) angeordnet ist und die Kopplungs-Pins (17a, 17b) jeweils mit ...

Hydraulisches Spielausgleichselement für die Ventilsteuerung von Brennkraftmaschinen

The invention concerns a hydraulic play-compensation element as described in the preamble of claim 1. The invention calls for the groove (11) in the housing (1) to be located in such a way that, whatever the position of the plunger (2), a length (19) of plunger is always supported by the cylinder wall above the groove and the guard ring (12) is centred radially round the plunger (2) by means of a recess (14) in the plunger (2), the recess (14) having a ramp (10) at least at its lower end. The invention thus avoids weakening of the material in the upper part of the plunger (2).

Kombination eines Verbrennungskraftmotors mit einer direkt von der Nockenwelle getriebenen Kühlmittelpumpe

Kühlmittelpumpe zur Verwendung mit einem Verbrennungskraftmotor, der eine Kurbelwelle und eine von der Kurbelwelle aus angetriebene Nockenwelle aufweist, wobei die Kühlmittelpumpe umfasst: ein Pumpengehäuse, das an dem Motor fest montierbar ist und eine Einlassöffnung zum Aufnehmen von Kühlmittel und eine Auslassöffnung zum Abfördern von Kühlmittel umfasst; eine Impellerwelle, die direkt an der Nockenwelle montiert ist, so dass sie konzentrisch zu ihr drehangetrieben ist, wobei sich die Impellerwelle in das Gehäuse in einem abgedichteten Eingriff und in einer nicht abgestützten Relation erstreckt; einen Pumpenimpeller, der operativ an der Impellerwelle im Inneren des Pumpengehäuses montiert ist, wobei der Pumpenimpeller drehbar ist, um das Kühlmittel in das Pumpengehäuse durch die Einlassöffnung einzusaugen und das Kühlmittel unter höherem Druck durch die Auslassöffnung auszuschieben.

Gas flow generating device, for investigation sound propagation influencing measures e.g. in vehicle combustion engine, comprises a flow channel with uniform flow and channel blocking arrangement that can be cyclically operated

A device for generating a gas flow (3) with superimposed pressure waves or pulsations (8) comprises an arrangement (10) for generating a uniform gas flow in a flow channel (9) and a blocking arrangement (13) for cyclic opening and closing of the channel. The invention also relates to a corresponding acoustic test bed for testing measures for influencing sound propagation, especially in the intake or exhaust lines of a combustion engine. An independent claim is made for a method for generating a gas flow with superimposed pressure waves or pulses.

Elektrohydraulische Ventilabschaltung in einer Brennkraftmaschine, Verteilereinheit hierzu und Herstellungsmethode derselben

Zylinder-Kolbentrieb

Die Erfindung betrifft einen Zylinder-Kolbentrieb, insbesondere einen hydraulisch gesteuerten Aktuator (1) zur Betätigung eines Gaswechselventils (2) einer Brennkraftmaschine, beinhaltend einen innerhalb eines Zylinders (6) verschieblichen Stellkolben (8), der mit voneinander abgewandten Kolbenseiten (14, 16) Druckkammern (10, 12) begrenzt, wobei der Stellkolben (8) mehrteilig ist und aus wenigstens zwei ineinander gesetzten und relativ zueinander verschiebbaren, an Anschlagflächen (36, 38) gegeneinander anschlagbaren Teilkolben (18, 20) besteht, wobei eine Druckkammer (10) von allen und die andere Druckkammer (12) nur von einem Teil der Teilkolben (20) begrenzt und die Verschiebewege der nicht die andere Druckkammer (12) begrenzenden Teilkolben (18) gegenüber dem Gesamtverschiebeweg des Stellkolbens (8) reduziert und wenigstens eine am Zylinder (6) angeordnete Anschlagfläche (36) vorgesehen ist, an welcher eine Anschlagfläche (38) von einem der Teilkolben (18) nach Zurücklegen des reduzierten ...

A valve train assembly

Camshaft to phaser coupling

A valve actuating device

... 276,669. Motosacoche Soc. Anon. Aug. 28, 1926, [Convention date]. Actuating-mechanism. - In order to reduce wear due to lateral movement between the camactuated valve lever g and the valve stem b of internal-combustion engines or other machines or apparatus, a cap e is fitted loosely over the end of the valve stem, or over the screw f carried by the lever, so as to have slight lateral play.

An internal combustion engine incorporating a poppet valve with integrated electrode to overcome the need for spark plugs

An internal combustion engine characterised by a poppet valve 30 having a portion forming a primary electrode. The primary electrode may have a number of discharge tips (269b, figure 14) and is located on the valve head 32 for use with at least one secondary electrode 35 not formed as part of the valve 30 to produce a number of electron pairs. A secondary electrode 35, of which there may be several, may be a fuel injector nozzle (75, figure 11) or an integrally formed projection (133, figure 4a) on the cylinder head 11. A combustion chamber in an engine may have two or more of these valves and the ignition timing of each primary electrode may be independently controlled. Each valve 30 may be made of an electrically conductive material and may have a head portion 32 forming the primary electrode, alternatively it may be made from an insulating material and may have an electrically conductive core or an internal cavity containing an insulating member (267, figure 13a) with an electrically ...

Variable Valve Timing Mechanism

A poppet valve actuation system where the poppet valve is operated via a cam follower by a cam 1 which is joined by two pivot links 4, 6 to a connecting rod 10 driven by a shaft 13. The first link 4, the "cam link", is rotatably connected at one end to the cam 1 and at the other to one end of the second link 6, the "control link". The control link 6 is rotatably connected along its length to the small end 9 of connecting rod 10 while the other end of the control link 6 is a free end 15, being connected via a mechanical joint to an actuator 19, 22 that can apply a displacement to this free end 15 such that the angle of the control link 6 relative to the cam link 4 and the angular displacement of the cam 1 can be adjusted by the displacement of the free end 15, causing rotation about the connection of the control link 6 with the small end 9 of the connecting rod. The big end of the connecting rod is free to rotate on the shaft 13 which is driven in appropriate phase with the engine crankshaft ...

SUPERVISING FUNCTIONING OF I C ENGINE

Arrangement for reducing torsional loading of a camshaft

A method and system for estimating cam phase angle in an engine

A system and method for determining an estimation of actual cam phase angle of increased accuracy are based on an observed cam phase angle derived from a cam phase sensor 36 and a predicted cam phase angle derived from a desired or commanded cam phase angle are disclosed. The estimated cam phase angle is used in an electronic control unit 18 in computing desired settings for engine variables which depend on cam phase angle.

Depressurising anti-knock fuel recovery valve

Improvements in valve caps and the like for use on internal combustion engines

... 197,838. Coram, W. G. May 30, 1922. Cylinders and valve chests, cooling.-A valve cap is made by casting together a member B of good heat-conducting material such as aluminium alloy, and a ring A of harder metal, such as phosphor-bronze. The ring A may have a portion C which prevents contact of the member B with the hot gases; tho member B is preferably finned; and the ring A may be cast on the member B or vice-versa. In an alternative construction, a series of fins of sheet metal, for example, copper, are united by casting around them a portion corresponding to A. Several arrangements of the joint between the members A and B are described, designed to prevent relative rotation as well as axial displacement of the parts.

INTERNAL COMBUSTION ENGINE ROCKER ARM ARRANGEMENT HAVING A READILY REPLACEABLE PLATE SPRING

Intermediate lever

Engine front cover

Device for holding camshaft against rotation

Automatic tappet clearance adjusting device

VARIABLE VALVE TRAIN FOR ACTUATING A VALVE OF AN INTERNAL COMBUSTION ENGINE

Variable flow reducing valve and gradual control valve distribution system for a compressed air injection engine operating on mono or multi energy and other engines or compressors

The invention relates to a variable flow reducing valve and distribution system for compressed air injection engines, comprising a high-pressure compressed air tank and a buffer capacity and operating on mono or dual energy with dual or triple supply mode. Said invention also comprises a system for controlling the stroke of the piston which can be used to stop said piston at the dead centre. Moreover, the air supply in the final use buffer capacity and the supply to the cylinders are ensured by pilot valves. The cams of the aforementioned pilot valves, which are used to control the rocker arm rods, are positioned directly on the flanges of the crankshaft (14) and each rocker arm pivots around a mobile shaft (21) that can move between the two ends thereof, thereby enabling the changing of the lever arm ratio which determines the lifting of the valve according to the movement of the rocker arm rod. The invention is suitable for use as a gas reducing valve or for engine or compressor distribution ...

VARIABLE VALVE TRAIN FOR ACTUATING A VALVE OF AN INTERNAL COMBUSTION ENGINE

VARIABLE VALVE TRAIN FOR ACTUATING A VALVE OF AN INTERNAL COMBUSTION ENGINE

Pressure reducer with variable flow and distribution by valve with progressive order for fuel injection engine of compressed air functioning into mono and pluri energy and other engines or compressors.

Variable flow reducing valve and gradual control valve distribution system for a compressed air injection engine operating on mono or multi energy andother engines or compressors.

SOUND-ABSORBING TOTALLY ENCLOSED INTERNAL-COMBUSTION ENGINE

ENGINE VALVE MOVING APPARATUS

PROCEDURE AND DEVICE AS A CHECK OF THE VALVE CLOSING SPEED

NOCKENST SSELARM F R A COMBUSTION ENGINE

SCHALLDAEMMEND GEKAPSELTE BRENNKRAFTMASCHINE

ELECTROMAGNETIC CAM SHAFT ADJUSTER

VALVE IMPULSE AND VALVE LEVER MECHANISM

CAM FOLLOWER FOR AN INTERNAL COMBUSTION ENGINE

Die Erfindung betrifft eine Nockenfolgeeinrichtung (20) für eine Brennkraftmaschine mit zumindest einer unten liegenden Nockenwelle (5), wobei die Nockenwelle (5) über zumindest ein Nockenfolgeelement (2) auf eine auf diesem aufliegende Stoßstange (6) einwirkt. Um die Montage bzw. Demontage der Nockenwelle zu erleichtern, ist vorgesehen, dass die Nockenfolgeeinrichtung (20) zumindest ein Halteelement (1) aufweist, mit dem das Nockenfolgeelement (2) lösbar mit der Stoßstange (6) koppelbar ist, wenn die Stoßstange (6) ohne Einwirkung der Nockenwelle (5) entlang einer Stoßstangenlängsachse (6a) von der Nockenwelle (5) wegbewegt wird.

PROCEDURE FOR THE DETERMINATION OF THE POSITION OF A VALVE OF A COMBUSTION ENGINE WITH THE COLD TEST

MULTIPART MULTI-FUNCTION CAM

SOLENOID OPERATED VALVE FOR THE CURRENT CONTROL OF HYDRAULIC FLUID

HOUSING FOR A VALVE OPERATING BUMPER.

INTERNAL-COMBUSTION ENGINE

Valve gear of engine

INTERCOOLING AND HEAT-REGENERATING TWO-STROKE ENGINE

CAM FOLLOWER ARM FOR AN INTERNAL COMBUSTION ENGINE

APPARATUS AND METHOD FOR DETECTING SHAFT ORIENTATION AND VALVE ASSEMBLY IN AN INTERNAL COMBUSTION ENGINE

VALVE GEAR OF ENGINE

A valve gear of an engine, wherein a camshaft (36) is pivotally supported through a bearing (41) on a cylinder head (5) in which an intake valve (29i) and an exhaust valve (29e) are installed, and an intake rocker arm (38i) and an exhaust rocker arm (38e) continuously connecting the camshaft (36) to the intake valve (29i) and the camshaft (36) to the exhaust valve (29e) are mounted on a rocker arm shaft (42) supported on the cylinder head (5) parallel with the camshaft (36). A fixing bolt (44) is threaded into the cylinder head (5) to constrain the movement of the rocker arm shaft (42) in the thrust direction by abutting it on the end part of the rocker arm shaft (42). A flange seat (44a) is integrally formed with the fixing bolt (44) to constraint the movement of the bearing (41) in the thrust direction by abutting it on one side face of the bearing. As a result, the compact valve gear of the engine can be provided by sharing the means for constraining the movements of the camshaft and ...

VALVE OPERATING SYSTEM IN INTERNAL COMBUSTION ENGINE

A valve operating system in an internal combustion engine includes a switchover pin which is movable between an associatively operating position where adjacent ones of rocker arms are operated in association with each other, and an associative-operation releasing position where the associative-operation is released, the switchover pin receiving at axially opposite ends thereof a hydraulic pressure force acting toward the associatively operating position and a spring force acting toward the associative-operation releasing position, a cylindrical roller shaft which is fixed to one of the adjacent rocker arms, and into which the switchover pin is slidably fitted in response to the movement thereof toward the associatively operating position, and a roller rotatably carried on the roller shaft to come into rolling contact with a cam provided on a camshaft. In this valve operating system, at least one of axially opposite end surfaces of the roller shaft formed of a material harder than that of ...

VALVE ASSEMBLY FOR INTERNAL COMBUSTION ENGINE

An especially adapted engine valve (28) includes structure which damps motion of the valve (28) during its final closure to seat. A spool portion (38) of the valve (28) establishes with its associated guideway (42), a damping chamber (40) into which oil under pressure may be admitted via a feed passageway (47). Oil is discharged through a flow-restricted bleed passageway (48) during closure of the valve (28) so as to create beneficial pressure buildup within the damping chamber (40) and thus reduce the valve's closing velocity. Since the damping functions occur passively (i.e. dependent only upon the relative location of the valve within its guideway), gentle closing of the valve (28) can occur at any point on the cam (12) lobe thereby making it especially well suited for use in "lost motion" valve control systems.

ADJUSTABLE LASH VALVE TRAIN FOR OVERHEAD VALVE ENGINE

An adjustable valve lash train for an overhead valve engine includes a rocker arm stud having a threaded shank received in a correspondingly threaded bore in said cylinder head. The rocker arm stud includes an integral head having a spherically shaped bearing surface on the undersurface thereof in engagement with a correspondingly shaped bearing surface on the rocker arm. The head of the rocker arm stud includes a hexagonally shaped recess in the top surface thereof for receipt of an adjustment tool. A threaded jam nut is received about the threaded shank of the rocker arm stud for selectively locking the threaded shank against rotation with respect to the threaded bore of the cylinder head. A push rod guide plate is sandwiched between the cylinder head and the jam nut adjacent the shank of the rocker arm stud for controlling lateral displacement of a push rod.

SYNCHRONOUS DRIVE APPARATUS WITH NON-CIRCULAR DRIVE ELEMENTS

A synchronous drive apparatus and method, wherein the apparatus comprises a plurality of rotors comprising at least a first and a second rotor. The first rotor (11) has a plurality of teeth (16) for engaging the engaging sections (15) of an elongate drive structure (10), and the second rotor (12) has a plurality of teeth (16) for engaging the engaging section of the elongate drive structure. A rotary load assembly (26) is coupled to the second rotor (12). The elongate drive structure (10) engages about the first and second rotors. The first rotor is arranged to drive the elongate drive structure and the second rotor is arranged to be driven by the elongate drive structure. One of the rotors has a non-circular profile (19) having at least two protruding portions alternating with receding portions. The rotary load assembly is such as to present a periodic fluctuating load torque when driven in rotation, in which the angular positions of the protruding and receding portions of the non- circular ...

GUIDE RAIL FOR THE VALVE GEAR OF AN INTERNAL COMBUSTION ENGINE

The invention relates to a guide rail for the valve gear of an internal combustion engine comprising, inside the rail (1), accommodating spaces (2), which are situated one behind the other in an interspaced manner and accommodate valve lifters (3). According to the invention, flattenings are provided on the outer surface of the valve lifter (3) in order to prevent a valve lifter (3) from rotating about its central longitudinal axis. These flattenings rest against flattenings (6) of the guide rail (1) that are located inside the assigned accommodating space (2). According to the invention, an insertion borehole (4) is allocated to each accommodating space (2) of the guide rail (1), into which the valve lifter (3) with its trumpet- like end (5) shaped thereon is inserted in the direction of its longitudinal axis, is subsequently displaced, in a manner that is parallel to the axis, up to the flattenings (6) of the guide rail (1) that act as turning prevention surfaces and, afterwards, is slightly ...

REFUSE VEHICLE BODY ASSEMBLY

A vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis rearward of the cab, a bracket, and a valve assembly. The body defines a compartment and includes a front wall. The bracket has an arm coupled to the front wall. The arm extends rearward of the front wall into the compartment. The valve assembly is coupled to the bracket such that at least a portion of the valve assembly is disposed within the compartment.

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

In a control device for an engine, the engine includes combustion chambers, ports connected to the combustion chambers, and valves that open and close areas between the combustion chambers and the ports. The control device includes an electronic control unit that is configured to execute an anti-freezing operation of performing control to fully close the valves or make the valves be in a state of being opened with a lift amount of 1 mm or more, in a case where temperatures around the valves are lowered to a predetermined temperature range after the engine is stopped, or in a case where an outside air temperature when the engine is stopped is equal to or lower than a predetermined temperature. The predetermined temperature range is a temperature range in which an upper limit value is lower than 10°C, and the predetermined temperature is lower than 5°C.

VALVE

The invention is related to an arrangement that is designed to govern inlet and outlet gas mixtures and is used mainly in four stroke combustion engines. Already existing designees is of a nature that they limit the performance of the four-stroke engine mainly as a result of the weight and its flow-technical design. The invention resolve this problem mainly as a result of that the new valve is lighter and has a better flow-technical design. This is a result of that the new valve design allows both the inlet and outlet gas mixtures to flow inside and through the valve body (find drawing A2) thus as a result the valve design is lighter and has an higher efficiency due to the flow-technical design that allows for that no valve shaft is put in the middle of the flow path. The invention is mainly used in the transportation industry.

HIGH PERFORMANCE HEAD ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE

A cylinder head assembly for an internal combustion engine. The cylinder head assembly has a deck surface for engaging an opposed deck surface on an engine block. A combustion chamber is recessed in the cylinder head assembly for each cylinder, and the combustion chambers each have first and second wedge portions. A first valve port penetrates the first wedge portion, and a valve seat is provided in the first valve port. The first valve seat is disposed at a first angle relative to the deck surface. A second valve port penetrates the second wedge portion, and a valve seat is provided in the second valve port. Thesecond valve seat is disposed at a second angle relative to the mounting surface. The second angle is less than the first angle. Each valve seat has a valve element for controlling the ingress and egress of gas flowing to and from the chamber. The wedge portions permit a more erect valve orientation for the intake valve such that less scavenging of the fresh fuel/air charge will ...

METHOD AND APPARATUS FOR ACTIVE CONTROL OF THE COMBUSTION PROCESSES IN AN INTERNAL COMBUSTION ENGINE

The performance of an internal combustion engine is optimized utilizing an electrically controlled driver (40) which is located relative to the intake port (28) to excite the intake charge at a selected frequency, duration and power level which depends on the engine operating condition. The purpose of this excitation is to control combustion by optimizing large scale recirculation patterns of the intake charge within the combustion chamber (18). In particular, this device will provide the effect of optimizing volumetric efficiency at wide open throttle and minimize fuel consumption and emissions at part throttle. An electronic engine controller varies the operation of the drive device as a function of engine operating conditions. The driver excites the intake charge at a frequency of about 5 to 1000 times of the engine speed.

Ventilfederspanner.

Einstellbares und verschiebbares Steuerelement

PRESSURE REDUCTION GEAR CHANGING FLOW AND SUPPLY STEP DISTRIBUTING SYSTEM CONTROL VALVES FOR ENGINE WITH COMPRESSOR INJECTION, OPERATING ON MONOENERGII OR MULTIENERGII, AND OTHER ENGINES OR COMPRESSORS

УСТРОЙСТВО УПРАВЛЕНИЯ ПОПЕРЕЧНЫМ СЕЧЕНИЕМ И НЕПРЕРЫВНО ИЗМЕНЯЮЩИМИСЯ ВО ВРЕМЕНИ ПАРАМЕТРАМИ

Настоящее изобретение обеспечивает устройство управления поперечным сечением и непрерывно изменяющимися во времени параметрами, в котором в обычную систему впуска-выпуска двигателя внутреннего сгорания добавлены клапан 10 дроссельного управления, элемент 8 клапана дроссельного управления и соответствующий приводной механизм 1. Клапан 10 дроссельного управления фиксируется в полости, которая состоит из трубопровода 11 текучей среды в головке 7 цилиндра, посадочного гнезда 12 клапана и клапана 9. Клапан 10 дроссельного управления является цилиндрическим, и его ось перемещения почти совпадает с осью направляющей детали клапана или параллельна ей. Посредством управления соответствующим перемещением между клапаном 9 и клапаном 10 дроссельного управления можно гибко регулировать площадь поперечного сечения трубопровода текучей среды, эффективную фазу клапана, время действия, эффективную высоту подъема и интенсивность завихрения движения текучей среды во время периодического открывания и закрывания ...

Hydraulic drive

Dynamically reconfigurable internal combustion engine

Device of assembly of the exhaust valves in the spark-ignition engines

DEVICE FOR ADJUSTING THE ANGULAR POSITION OF A CAMSHAFT.

DEVICE AND ANGULAR PROCESS OF ADJUSTMENT Of a CRANKSHAFT OF INTERNAL COMBUSTION ENGINE

DEVICE OF ASSEMBLY Of a PINION Of DRIVE ON the NOSE Of a CRANKSHAFT Of an ENGINE HAS DRIVE BY CHAIN

Distribution by valves intended in particular for the spark-ignition engines at high speed

Improvement brought to the lighting of the spark-ignition engines

Valves mechanically operated for internal combustion engines with valves at the head

PROCEEDED OF REGULATION Of a VALVE LIFT, DEVICES OF VALVE HAS VARIABLE, DRIVING OPENING EQUIPS With SUCH a DEVICE

Tools for assembly of the chains of distribution and chock of the pinions for engines with distribution ordered by chain

Device of detection of the angular position of a camshaft of internal combustion engine

Dispositif de détection de la position angulaire d'un arbre à cames (2) de moteur à combustion interne, comprenant un capteur du type à effet Hall (4) destiné à être monté dans un logement (5) correspondant du moteur pour détecter le passage d'une cible (3) en matériau magnétique solidaire dudit arbre à cames (2), caractérisé en ce que le capteur (4) coopère avec des moyens élastiques de poussée (6) destinés à venir plaquer le capteur contre la cible (3) lors de la mise en place dudit capteur (4) dans son logement (5).

TAIL BALL VALVE

Electromechanical device, has mechanical unit transmitting movement between electric motor and control rod of control jack of control device, where unit has cam shaft which is positioned above cylinder head of jack

Le dispositif électromécanique (800) permettant de piloter le taux de compression d'un moteur à rapport volumétrique variable suivant la présente invention comporte des moyens mécaniques de transmission du mouvement (801) entre au moins un moteur électrique (802) et au moins une tige de contrôle (20) d'un vérin de commande (8) d'un dispositif de contrôle (12) permettant de régler la position verticale d'une crémaillère de commande (7) dudit moteur à rapport volumétrique variable.

Internal combustion engine, has retaining unit movable between active and dismantled positions of cylinder head block that includes inlet and outlet which are controlled by cams carried by cams shaft

La présente invention concerne un moteur à combustion interne, notamment moteur pour essais, comprenant un bloc culasse (12) déplaçable entre une position active et une position démontée, ledit bloc culasse portant des moyens d'admission et d'échappement commandés par des cames (30, 36) portées par au moins un arbre à cames (32, 38), un bloc moteur (10) avec un vilebrequin (16) commandant le déplacement d'au moins un piston (22) dans un cylindre (20) et un organe de transmission de mouvement (50) entre le vilebrequin (16) et au moins l'un des arbres à cames (32, 38) pour le calage de distribution. Selon l'invention, le moteur comprend des moyens de conservation du calage de distribution (56, 58) entre la position active et la position démontée du bloc culasse (12).

Клапанная крышка (варианты) и система для двигателя

1. Клапанная крышка для двигателя, содержащая:корпус крышки; итрубку для свечи зажигания, выполненную за одно целое с корпусом крышки.2. Клапанная крышка по п.1, в которой трубка для свечи зажигания отлита за одно целое с корпусом крышки.3. Клапанная крышка по п.2, в которой корпус крышки содержит первый материал, а трубка для свечи зажигания содержит второй материал, при этом первый материал отличен от второго материала.4. Клапанная крышка по п.1, в которой трубка для свечи зажигания включает в себя уплотнительное средство на или смежно ее наружному концу для уплотнения с головкой блока цилиндров.5. Клапанная крышка по п.4, в которой уплотнительное средство включает в себя выточку под уплотнительное кольцо и уплотнительное кольцо, выполненные с возможностью уплотняющего взаимодействия с кольцевой поверхностью отверстия для свечи зажигания в головке блока цилиндров.6. Клапанная крышка по п.4, в которой уплотнительное средство включает в себя торцевое уплотнение, расположенное на краю трубки для свечи зажигания и выполненное с возможностью уплотняющего взаимодействия с основанием отверстия для свечи зажигания.7. Клапанная крышка по п.1, в которой корпус крышки включает в себя по существу плоский соединительный край для соединения с головкой блока цилиндров, при этом трубка для свечи зажигания продолжается за соединительный край.8. Клапанная крышка, содержащая:корпус крышки, содержащий соединительный край, выполненный с возможностью соединения с головкой блока цилиндров двигателя; изакрытый канал, имеющий второй конец, жестко соединенный с корпусом крышки, и первый конец для уплотняющего взаимодействия с отверстие РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 145 313 U1 (51) МПК F02F 1/00 (2006.01) F02F 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2013153928/06, 04.12.2013 (24) Дата начала отсчета срока действия патента: 04.12.2013 (72) Автор(ы): ВАЛЕНСИЯ Фрэнк Асьерно (US), ...

Valve spring retainer for an internal combustion engine and a method of manufacturing the same

Oxide film formed on a spring-retaining flange by heat treatment gets unlikely to peel off, thereby improving wear resistance of a contact surface of the spring-retaining flange with a valve spring. The oxide film 15 of the part of the spring-retaining flange 3 with the valve spring 7 is at least partially removed to make thickness of the oxide film to 0.00 to 0.02 μm.

Control valve

A control valve for a device for the variable adjustment of the valve timing of gas exchange valves of an internal combustion engine. The control valve has a substantially hollow-cylindrical valve box, a control piston and a securing ring. The valve box is arranged in a receptacle inside the device, the securing ring projects over the valve box in the radial direction and the control piston is arranged so as to be axially displaceable inside the valve box.

Fuel supply device

A fuel supply device includes: an injector that injects and supplies fuel to an engine; a pressure accumulator communicating with a cylinder of the engine through a communication passage; a valve that opens or closes the communication passage; and a controller that controls the injector and the valve. When the engine is rotated, an air-fuel mixture is compressed in the cylinder, and an accumulating portion of the controller accumulates the air-fuel mixture in the pressure accumulator. When the engine is restarted, a supplying portion of the controller supplies the air-fuel mixture accumulated in the pressure accumulator to the cylinder.

Gasket and Seal Structure

A gasket and a gasket seal structure in which the gasket is adapted to be inserted into a cutout recess part formed on a wall part of a box-shaped member with an opening part on at least one surface, the cutout recess part communicating with the opening part. The gasket and the structure thereof are characterized by the followings; the cutout recess part has a chamfered surface at the corner part on the opening part side; the gasket comprises an exterior rubber part having a seal surface part elastically contacting the cutout recess part and a core body having higher rigidity than that of the exterior rubber part and covered with the exterior rubber part; and the seal surface part has at a region corresponding to the corner part on the opening part side of the cutout recess part a projecting part formed along the corner part on the opening part side and projecting toward the corner part on the opening part side of the cutout recess part.

Control Valve Comprising an Integrated Filter and Cam Shaft Phase Setter Comprising Said Control Valve

A control valve for controlling a pressure fluid, said control valve comprising: a valve housing () comprising a valve inlet (P) for the pressure fluid, a control port (A, B) for connecting to an assembly which is to be operated using the pressure fluid, and a valve outlet (TA, TB); a valve piston () which can be moved in the valve housing () along an axis (R) and which comprises a hollow space () through which the pressure fluid can flow from the valve inlet (P) to the control port (A, B); and a filter device () which is arranged in the control valve and comprises a filter cross-section () which filters the pressure fluid as it passes through it, wherein at least a part of the filter cross-section () of the filter device () is situated in the hollow space () of the valve piston (). 1. A control valve for controlling a pressure fluid , said control valve comprising:a valve housing comprising a valve inlet for the pressure fluid, a control port for connecting to an assembly which is to be operated using the pressure fluid, and a valve outlet;a valve piston which can be moved in the valve housing along an axis and which comprises a hollow space through which the pressure fluid can flow from the valve inlet to the control port; anda filter device which is arranged in the control valve and comprises a filter cross-section which filters the pressure fluid as it passes through it,wherein at least a part of the filter cross-section of the filter device is situated in the hollow space of the valve piston.2. The control valve according to claim 1 , wherein the filter device comprises a filter enclosing structure which extends in the hollow space of the valve piston and surrounds an internal space of the filter device claim 1 , and a filter inlet into the internal space of the filter device claim 1 , and wherein the filter cross-section forms at least a part of the enclosing area of the filter enclosing structure which surrounds the internal space of the filter device claim 1 ...

Apparatus and Method for Replacing an Oil Pressure Regulating Assembly and a High Pressure Relief Valve Assembly

A method of increasing oil pressure in a heavy duty truck engine lubricating system is provided. The lubricating system comprises an oil pressure regulating assembly mounted in an oil filter base and having a main spring to regulate oil pressure, and a high pressure relief valve assembly mounted in the oil filter base and having a peak clipping spring to relieve oil pressure when the pressure exceeds a specified limit. The method includes the steps of replacing the main spring with a replacement main spring having a higher spring constant and replacing the peak clipping spring with a replacement peak clipping spring having a higher spring constant. A replacement kit for increasing oil pressure is also provided.

Auxiliary device mounting structure for an internal combustion engine

In an auxiliary device mounting structure for mounting an auxiliary device ( 4 ) on a cylinder head ( 2 ), the auxiliary device such as a fuel injection pump is provided with a lower housing ( 42 ) attached to the cylinder head, and the upper housing ( 43 ) supporting the auxiliary device and attached to the lower housing so as to jointly form a housing chamber ( 48 ). An extension ( 51 ) of a camshaft ( 37 ) extends into the housing chamber, and is fitted with a cam ( 61 ) for actuating a plunger ( 86 ) of the auxiliary device. A radial bearing ( 53, 56 ) for the camshaft extension is integrally formed on the first housing at a position located more inward than the axial end of the cylinder head so that the cylinder head is not required to be formed with an axial extension, and is enabled to support the auxiliary device and a bearing for the camshaft extension in a highly stable manner.

BISTABLE ELECTROMAGNETIC ACTUATING DEVICE AND CAMSHAFT ACTUATING DEVICE

A bistable electromagnetic actuating device and a camshaft actuating device for displacing a camshaft in a motor vehicle having an electromagnetic actuating device. 1. A bistable electromagnetic actuating device , in particular for displacement of a camshaft in a motor vehicle , comprising an actuating element which forms an engagement region and can be moved between a first and a second switch position , a coil device which is provided in a stationary manner relative to the actuating element and is formed to exert a force on the actuating element , wherein the actuating element is assigned a disc-shaped permanent magnet element , which is accommodated between magnetically conductive pole discs which are provided on both sides of the permanent magnet means and are fastened to the actuating element , wherein the permanent magnet element is formed to interact with a stationary core region , and the coil device is formed to produce a counter-force which counteracts a holding force of the permanent magnet element and loads the latter with a force together with the actuating element away from a first stop face formed by the core region towards a second stop face which defines the second switch position , damping means associated with the actuating element are provided for damping the impact when the first and/or second switch position is reached , the damping means are formed and arranged in such a manner that they have a damping effect only in an end section of the displacement movement of the actuating element from the first switch position to the second switch position and/or from the second switch position to the first switch position.2. The actuating device according to claim 1 , wherein the damping means are formed and arranged in such a manner that they can be elastically deformed only in the end section of the displacement movement.3. The actuating device according to claim 2 , wherein an axial extent of the end section of the displacement distance in which the ...

CAMSHAFT ADJUSTER

A camshaft adjuster () is disclosed that has a spring () that is supported by spring supports (), and these spring supports () have lubricant reservoirs () for the lubrication of the contact area between the spring wire () and the spring support (). 1. A camshaft adjuster comprising a drive element , a driven element , and a spring , the drive element and the driven element are rotatable relative to each other , the spring is fixed by a spring support of the drive element and a spring support of the driven element , the spring supports a relative rotation between the drive element and the driven element , and a lubricant reservoir is provided between a spring wire of the spring and the spring supports , in order to lubricate a contact area between the spring wire and the spring support.2. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir is defined as a region between a two-line contact of the spring wire with the associated spring support.3. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir comprises a pocket.4. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir comprises a groove.5. The camshaft adjuster according to claim 4 , wherein the lubricant reservoir groove is arranged transverse or inclined relative to the spring wire.6. The camshaft adjuster according to claim 4 , wherein the lubricant reservoir groove has a circular construction.7. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir comprises a slot.8. The camshaft adjuster according to claim 1 , wherein the spring support comprises a peg.9. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir is produced by shaping processes.10. The camshaft adjuster according to claim 1 , wherein the lubricant reservoir is constructed as a solid lubricant body. This application claims the benefit of German Patent Application No, 102011088295.2, filed Dec. 12, 2012, which is incorporated ...

Constructed plastic rotor with integrated cartridge and spring suspension

A cover ( 4 ) for covering an axial side of a rotor core ( 6 ) that is arranged in a camshaft adjuster ( 50 ) and has a passage bore ( 28 ) for holding a locking pin ( 30 ) with which the rotor core ( 6 ) can be secured against rotation relative to a stator ( 54 ) of the camshaft adjuster ( 50 ). The specified cover includes a base body ( 8 ) for axially covering at least one area of the rotor core ( 6 ) with the passage bore ( 28 ) and a support element ( 38 ) that is arranged on the base body ( 8 ) for the axial counter support of the locking pin ( 30 ).

CONTROL VALVE FOR CONTROLLING COMPRESSION RATIO AND COMBUSTION RATE

A method of controlling the compression ratio in an engine () having at least one cylinder () with a piston () includes providing an air control valve () in fluid communication with the cylinder, where the air control valve is in fluid communication with a reservoir (). The method also includes opening the air control valve () in a compression stroke before the piston () reaches top dead center, and closing the air control valve () when the piston reaches top dead center. 1) A method of controlling compression ratio in an engine having at least one cylinder with a piston; the method comprising:providing an air control valve in fluid communication with the at least one cylinder, wherein the air control valve is in fluid communication with a reservoir;opening the air control valve in a compression stroke before the piston reaches top dead center; andclosing the air control valve when the piston reaches top dead center.2) The method of further comprising the step of opening the air control valve during the combustion stroke after combustion is initiated.3) The method of further comprising the step of biasing the air control valve to a closed position.4) The method of further comprising the step of storing air in the reservoir after the air control valve is opened.5) The method of further comprising the step of communicating the air from the reservoir to the at least one cylinder after the air control valve is opened during the combustion stroke.6) The method of further comprising the step of closing the air control valve before the exhaust stroke.7) The method of further comprising the step of injecting fuel into the at least one cylinder in a compression stroke after the piston reaches top dead center.8) A method of controlling compression ratio in an engine having at least one cylinder with a piston; the method comprising:providing an air control valve in fluid communication with the at least one cylinder, wherein the air control valve is in fluid communication with ...

Air spring system for an internal combustion engine

A method of supplying air to an air spring biasing one of an intake valve and an exhaust valve of an internal combustion engine to a closed position is disclosed. The method includes: driving an air compressor with a motor prior to starting of the internal combustion engine, the air compressor fluidly communicating with the air spring to supply air to the air spring; determining that a predetermined condition has been reached; starting the engine once the predetermined condition has been reached; and driving the air compressor with a rotating shaft of the engine once the engine has started.

Shaft, particularly a partly tubular camshaft

The invention relates to a shaft, particularly a cam shaft ( 1 ), comprising a hollow shaft section ( 10 ) with at least one inlet opening ( 11 a , 11 b ) for evacuating a gas through said hollow shaft section ( 10 ), and comprising a splash-guard device ( 4 ) arranged in the region of the radial inlet opening ( 11 a , 11 b ) on the hollow shaft section ( 10 ). According to the invention, the splash-guard device ( 4 ) has a radially exposed cover with radial passage openings ( 8 ) and protrusions between said passage openings ( 8 ). The protrusions can, in particular, be in the form of ribs ( 9 ). To be published with FIG. 3 .

Cylinder structure for internal combustion engine

A cylinder structure satisfies the following conditions: 12%≦d/a≦27%, where d is a distance between a cylinder inner surface 12 a and an exhaust valve member 20 b, and a is a diameter of the exhaust valve member; 40%≦c/b≦50%, where c is a length of a non-guided portion of the exhaust valve 20 located below a lower end of a sleeve 26 when the exhaust valve 20 is closed, and b is a diameter of a cylinder bore; and 0.5%≦e/S≦0.8%, where e is a gap between an exhaust valve rod 20 a and the sleeve 26 and S is a diameter of the exhaust valve rod 20 a.

SEAL FOR SWITCH VALVES

A switch valve for a hydraulic unit, in particular a quick-acting valve for a hydraulic unit of a hydraulically variable valve gear of a reciprocating internal combustion engine, having a valve body, which is guided in an axially movable manner in a housing part and which is sealed with respect to the housing part by a seal, wherein the seal is designed as a flat seal element, which encloses the valve body in a sealing manner and which is operatively connected to an axial surface of the housing part in a sealing manner. 17-. (canceled)8. A switch valve for a hydraulic unit , the switch valve comprising:a housing part;a seal; anda valve body guided for axial displacement in the housing part and sealed from the housing part through the seal,the seal being configured as a flat sealing element enclosing the valve body in a sealing manner and operatively connected to an axial surface of the housing part in a sealing manner.9. The switch valve as recited in wherein the flat sealing element is arranged on a front end surface of the housing part.10. The switch valve as recited in wherein the flat sealing element is made out of an elastic material.11. The switch valve as recited in wherein the elastic material is an elastomeric material or a fluoroplastic.12. The switch valve as recited in wherein the flat sealing element includes a metallic claim 9 , disc-shaped base body including an at least partial cladding out of the elastic material.13. The switch valve as recited in wherein the cladding is applied to an inner region of the disc-shaped base body facing the valve body and at least partially to a side of the disc-shaped base body facing the axial surface.14. The switch valve as recited in further comprising a seating ring claim 8 , the valve body including a sealing surface arranged outside of the housing part and forming a valve seat together with a counter surface arranged on the seating ring.15. The switch valve as recited in further comprising a spring arranged ...

Hydraulic Drive for Accelerating and Braking Dynamically Moving Components

In order to ensure a simple, reliable and recuperative operation in a hydraulic drive () for accelerating and braking a gas exchange valve () of internal combustion engines or other reciprocating engines, it is proposed that a first pressure reservoir () for providing a first pressure pcomprises a restoring energy accumulator, preferably configured as a spring (), and at least one hydraulic base pressure reservoir (), which has a lower pressure pthan the first pressure reservoir (). In a connecting line () between the first hydraulic pressure reservoir () and the working cylinder (), a controllable opening () of a first valve () comprising at least one check valve () is arranged upstream or downstream in the flow path, which allows the pressure medium () to flow in the direction of working cylinder (), but prevents a backflow towards the pressure reservoir (). 2. The hydraulic drive according to claim 1 , characterized in that in a second connecting line between the first pressure reservoir and the working cylinder there is provided a controllable opening of a second valve comprising at least one claim 1 , preferably spring-loaded check valve claim 1 , which is arranged serially in the flowpath upstream claim 1 , within or downstream claim 1 , preventing a flow in a direction towards the working cylinder claim 1 , but allowing a backflow in a direction towards the pressure reservoir.3. The hydraulic drive according to claim 2 , characterized in that the drive comprises at least a second pressure reservoir with a pressure p claim 2 , and that the controllable opening of the second valve is connected with this second pressure reservoir instead of with the first pressure reservoir claim 2 , wherein the pressure (p) of the second pressure reservoir is preferably between the pressure of the hydraulic base pressure reservoir pand the first pressure pand is preferably chosen so low that the gas exchange valve can reliably swing back onto the valve seat during the closing ...

VALVE ACTUATION SYSTEM FOR ENGINE AND VALVE LIFTER AND ROCKER ARM FOR SAME

A valve actuation system for an engine includes a rotatable camshaft, an injector actuation linkage, and a valve actuation linkage. The valve actuation linkage includes a valve lifter, a valve pushrod, and a rocker arm. At least one of a rocker arm center plane defined by the valve rocker arm or a lifter roller center plane defined by the valve lifter is spaced an offset distance from a pushrod axis, providing an increased contact width between an injector roller in the injector actuation linkage and one of a plurality of cam lobes of the camshaft. The valve lifter includes a fork defining a center plane spaced an offset distance from a center axis of the valve lifter. A rocker arm includes a screw bore offset relative to a rocker arm center plane. 1. A valve actuation system for an engine comprising:a camshaft including a plurality of cam lobes and being rotatable about a camshaft axis;an injector actuation linkage including an injector lifter having an injector roller in contact with a first one of the plurality of cam lobes;a valve actuation linkage including a valve lifter defining a reciprocation axis, a pushrod seat centered on the reciprocation axis, and a lifter roller in contact with a second one of the plurality of cam lobes adjacent to the first one of the plurality of cam lobes;the valve actuation linkage further including a valve rocker arm structured to couple with an engine valve, and a valve pushrod coupled between the valve lifter and the valve rocker arm and in contact with the pushrod seat;the valve rocker arm defining a pivot axis and a rocker arm center plane extending through a center point of the pivot axis;the lifter roller defining a rotation axis and a lifter roller center plane extending through a center point of the rotation axis;the valve pushrod defining a pushrod axis extending through the valve pushrod, the valve lifter, and the valve rocker arm; andat least one of the rocker arm center plane or the lifter roller center plane is ...

CAMSHAFT ADJUSTER

A camshaft adjuster including a stator and a rotor, wherein the stator and the rotor are arranged such as to be able to rotate relative to one another, the camshaft adjuster has a cover which is connected to the stator or to the rotor such as to rotate therewith, and wherein the stator an/or the rotor and/or the cover has a through-opening which is at least partially penetrated by a screw, wherein the camshaft adjuster has a threaded bushing which is inserted in the through-opening and which includes a tubular piece having an internal screw thread and a radial collar arranged at one end of the tubular piece, wherein the screw engages in the threaded bushing, the threaded bushing has a bearing face which is arranged in the transition from the radial collar to the tubular piece and which is oriented at an angle to a longitudinal axis of the tubular piece, and the threaded bushing bears with the bearing face against a correspondingly shaped counterface of the stator an/or of the rotor and/or of the cover. 19-. (canceled)10. A camshaft adjuster comprising:a stator and a rotor rotatably situated relative to each other;a cover rotatably fixedly connected to the stator or the rotor; andthe stator or the rotor or the cover having a through-opening at least partially penetrated by a screw; anda threaded bushing inserted into the through-opening and including a tube piece having a female thread and a radial collar situated on one end of the tube piece, the screw engaging with the threaded bushing; the threaded bushing having a contact surface situated in a transition between the radial collar and the tube piece and obliquely oriented with respect to a longitudinal axis of the tube piece, the threaded bushing abutting a correspondingly shaped mating surface of the stator or the rotor or the cover via the contact surface.11. The camshaft adjuster as recited in wherein the radial collar is countersunk in the through-opening.12. The camshaft adjuster as recited in wherein the ...

ROCKER ARM ASSEMBLY WITH LOST MOTION SPRING CAPSULE

A valve train arrangement constructed in accordance to one example of the present teachings includes a rocker arm, a deactivating hydraulic lash adjuster (HLA) capsule, a lost motion spring (LMS) capsule and a lever. The rocker arm has a first end and a second end. The second end cooperates with a valve. The HLA capsule cooperates with the first end of the rocker arm. The LMS capsule has a lost motion spring. The LMS capsule is located in a position on the valve train arrangement that is offset from the HLA capsule. The lever is configured between the HLA capsule and the LMS capsule. During cylinder deactivation, load is transferred from the HLA capsule to the lever arm and ultimately to the lost motion spring in the LMS capsule. 1. A valve train arrangement comprising:a rocker arm having a first end and a second end, the second end cooperating with a first valve;a deactivating hydraulic lash adjuster (HLA) capsule cooperating with the first end of the rocker arm;a lost motion spring (LMS) capsule having a lost motion spring, the LMS capsule located in a position on the valve train arrangement that is offset from the HLA capsule; anda lever configured between the HLA capsule and the LMS capsule wherein during cylinder deactivation, load is transferred from the HLA capsule, to the lever arm and ultimately to the lost motion spring in the LMS capsule.2. The valve train arrangement of wherein the LMS capsule includes a capsule housing that receives the lost motion spring.3. The valve train arrangement of wherein the LMS capsule further includes a spring cap that bears against the lever arm.4. The valve train arrangement of wherein the lever arm includes an extension lobe that bears against the spring cap.5. The valve train arrangement of claim 4 , wherein the lost motion spring bears against the spring cap.6. The valve train arrangement of wherein the LMS capsule housing further receives a lever pin and wherein during movement of the lever arm claim 4 , the lever arm ...

Cam follower for a valve train of an internal combustion engine

A cam follower for a valve train of an internal combustion engine, the cam follower being formed as a lever, which is U-shaped in cross-section, and produced from steel sheet without machining, and which has a floor wall ( 3 ) and lateral walls ( 4 and 5 ) extending therefrom, wherein a valve stem support ( 10 ) is disposed as a groove ( 11 ) at one end of the lever in a surface of the floor wall ( 3 ) facing away from the lateral walls ( 4 and 5 ). Lateral guide walls ( 12 and 13 ) of the valve stem support ( 10 ) are formed by chipless shaping so as to extend from and counter to the lateral walls ( 4 and 5 ) and are connected to a support wall ( 14 ) that forms a valve stem support surface ( 10 a ). The valve stem support surface ( 10 a ) extends in a first plane ( 10 b ), which is spaced from a second plane ( 16 a ), which extends through an internal transition ( 15, 16 ) between the lateral walls ( 4 and 5 ) and the adjacent guide walls ( 12 and 13 ), in the direction of ends ( 19, 20 ) of the lateral walls ( 4 and 5 ). In order to reduce stress and resulting cracks, an inner radius R is provided at the transition ( 15 and 16 ), by which radius a free space ( 17, 18 ) is created between the lateral wall ( 4, 5 ) and the guide wall ( 12, 13 ), which free space narrows towards the end ( 19, 20 ) of the respective lateral wall ( 4, 5 ).

VALVE GEAR FOR ENGINE

A valve gear for an engine, includes: a camshaft phase varying device by which a rotational phase of a camshaft for opening/closing valves of the engine can be changed relatively to that of a crankshaft; and a holder that is provided so that the holder can be removably attached to the camshaft in a state where the holder has held constituent components of the camshaft phase varying device. 1. A valve gear for an engine , comprising:a camshaft phase varying device by which a rotational phase of a camshaft for opening/closing valves of the engine can be changed relatively to that of a crankshaft; anda holder that is provided so that the holder can be removably attached to the camshaft in a state where the holder has held constituent components of the camshaft phase varying device.2. The valve gear for an engine according to claim 1 , wherein the constituent components of the camshaft phase varying device comprises:a driven member that cannot be displaced axially relatively to the camshaft but can be displaced rotationally relatively to the camshaft;a guide member that is provided rotatably together with the camshaft so that the guide member can be displaced rotationally and axially relatively to the driven member;a centrifugal weight that is disposed between the driven member and the guide member; andan urging member that urges the driven member and the guide member so as to make the driven member and the guide member close to each other.3. The valve gear for an engine according to claim 1 , wherein a spline key is provided in the holder claim 1 , and the guide member is held in the holder so that the guide member can move axially along the spline key.4. The valve gear for an engine according to claim 2 , wherein a spline key is provided in the holder claim 2 , and the guide member is held in the holder so that the guide member can move axially along the spline key.5. The valve gear for an engine according to claim 1 , wherein the holder is attached to an axial end of ...

Rocker arm bushing inserts

Harley Davidson motorcycles motors have a gap between the rocker arm shaft and the cam plate bolt, this bolt is supposed to lock the rocker arm shaft but because of the gap the shaft rotates with the rocker arm, hitting the bolt causing an annoying tick. The Rocker arm bushing inserts go between the rocker arm support plate bolt and the rocker arm shaft locking the shaft and preventing it from rotating and hitting the bolt that cause an annoying tick. The bushings are called Rocker arm bushing inserts. Each cylinder head requires two inserts, or four per motor. Inserts can be made from any material and length can vary. Inserts must fit inside a 11/32 hole and around a 5/16 bolt shank. 1. The rocker arm bushing inserts fit between the bolt and the rocker arm shaft locking the shaft from turning and eliminate the shaft from rotating and hitting the bolt , eliminating the annoying tick that so many Harley motors witness.2. The Rocker arm bushings also center the rocker cam support plate so that it is always located in the same position eliminating different wear patterns on the rocker arm/valve and better alignment of the pushrod in the holes. This is a request to convert application 62/200,017 to a Non provisional patent. See note below in history.The gap between the shaft and bolt on Harley motors has been a known but little publicized problem, most people used a set screw or Loctite to stop the movement of the shaft to stop it from hitting the bolt.While studying my rocker arm assembly I realized that a bushing between the bolt and shaft would be a better solution, so I designed and perfected the rocker arm busing inserts.I then contacted John Lindsay (listed in the original provisional patent) to manufacture and promote the product called Rocker Lockers, and possibly form a business partnership. (That is why his name is on the provisional patent.)That partnership never developed and we went our separate ways and he started selling a “similar” product.I have ...

SWITCHING ROLLER FINGER FOLLOWER FOR VALVETRAIN

A rocker arm can comprise a forked outer arm assembly and a T-shaped inner arm assembly comprising an inner arm body comprising a valve side, a latch side, a bearing hole on the valve side, and a latch body on the latch side, the latch body comprising inner arm extensions extending away from the latch body. A pivot axle can connect the outer arm assembly to the inner arm assembly so that the inner arm assembly is configured to pivot with respect to the outer arm assembly. A latch assembly can comprise a latch configured to selectively extend to and retract from a latch seat on the latch body to selectively lock the inner arm assembly with respect to the outer arm assembly or unlock the inner arm assembly to pivot within the outer arm assembly. 1. A rocker arm , comprising:a forked outer arm assembly comprising a valve side, a pivot side, a pivot side body connecting a first outer arm and a second outer arm, and respective bearing holes in each of the first outer arm and the second outer arm;a T-shaped inner arm assembly comprising an inner arm body comprising a valve side, a latch side, a bearing hole on the valve side, and a latch body on the latch side, the latch body comprising inner arm extensions extending away from the latch body;a pivot axle connecting the bearing holes of the first outer arm and the second outer arm with the bearing hole of the inner arm assembly so that the inner arm assembly is configured to pivot with respect to the outer arm assembly; anda latch assembly mounted in the pivot side body, the latch assembly comprising a latch configured to selectively extend to and retract from a latch seat on the latch body to selectively lock the inner arm assembly with respect to the outer arm assembly or unlock the inner arm assembly to pivot within the outer arm assembly.2. The rocker arm of claim 1 , further comprising:a bearing axle hole between the latch body and the bearing hole;a bearing axle in the bearing axle hole; andat least one bearing ...

ROCKER ARM WITH AN OIL TROUGH

A rocker arm assembly having a rocker arm including a pair of sidewalls, each sidewall defining a support aperture, a rocker arm support including a pair of opposed bearing support arms, each bearing support arm being disposed within a corresponding support aperture of the rocker arm and defining a lubrication groove extending along an outer surface thereof, and a pair of radial roller bearings, each including an inner cup, an outer cup, and a plurality of rollers disposed therebetween, wherein each radial roller bearing is disposed both on a corresponding bearing support arm and within a corresponding support aperture. 1. A rocker arm assembly comprising:a rocker arm including a pair of sidewalls, each sidewall defining a support aperture;a rocker arm support member including a pair of opposed bearing support arms, each bearing support arm being disposed within a corresponding support aperture of the rocker arm and defining at least one lubrication groove extending along an outer surface thereof; anda pair of radial roller bearings, each including an inner cup, an outer cup, and a plurality of rollers disposed therebetween,wherein each radial roller bearing is disposed both on a corresponding bearing support arm and within a corresponding support aperture.2. The rocker arm assembly of claim 1 , wherein the outer surface of the bearing support arm along which the at least one lubrication groove extends is a top surface of the bearing support arm.3. The rocker arm assembly of claim 2 , wherein the at least one lubrication groove further comprises a plurality of lubrication grooves.4. The rocker arm assembly of claim 2 , wherein the inner cup of each radial bearing assembly has an inner cylindrical surface that is directly adjacent the outer surface of the corresponding bearing support arm.5. The rocker arm assembly of claim 2 , wherein the outer cup of each radial roller bearing includes a cylindrical side wall and a solid top wall that is perpendicular thereto.6. ...

Engine

An engine is provided with: a crank case that has a first crank shaft insertion hole and a second crank shaft insertion hole along the vertical direction; a crank shaft that is inserted into the first and second shaft insertion holes; and a cylinder unit that extends in the front-rear direction from the crank case. The cylinder unit is provided with a cylinder base that is positioned inside the crank case, and a cylinder block that is positioned outside the crank case. The cylinder unit is detachably attached to the crank case.

DEVICE FOR THE VARIABLE CONTROL OF AT LEAST ONE VALVE, FOR EXAMPLE FOR A RECIPROCATING ENGINE

A device for controlling at least one valve, the device comprising a body having a non-deformable cavity communicating exclusively with the outside via at least four rectilinear cylinders that are closed respectively by an opening piston (P) actuated by an opening cam (C), a closing piston (P) actuated by a closing cam (C), a shuttle piston (Pa) serving to load or unload the device, and a piston (Ps) that is mechanically connected to the valve. By adjusting the angular phase shift between the opening and closing cams (C, C), the control device of the invention makes it possible in operation to adjust the lift of the valve, the angular duration of the opening of the valve, and if necessary, to deactivate the valve completely throughout the duration of a cycle. 1121122121212. A control device for actuating at least one valve , e.g. for a reciprocating engine , the valve being driven with reciprocating motion in rectilinear translation to open or close an orifice having a sealing seat , said valve including resilient return means urging said valve towards a closed position , said device comprising a body including a non-deformable cavity communicating exclusively with the outside via at least four rectilinear cylinders that are closed respectively by four pistons (P , P , Pa , Ps) , each of said pistons being movable in reciprocating motion between a respective bottom dead-center remote from the inside of the cavity and a top dead-center close to the inside of the cavity , the device being characterized in that said pistons comprise a piston (Ps) mechanically connected to the valve and opposing its return means , an opening piston (P) actuated by an opening cam (C) that is driven in rotation by a first shaft , a closing piston (P) actuated by a closing cam (C) that is driven in rotation by a second shaft that rotates synchronously with the first shaft and that may be offset in operation relative to the first shaft through an adjustable angle , and a shuttle piston (Pa) ...

Module for a variable-lift valve train of an internal combustion engine

The disclosure relates to a preassembled module of a variable-lift valve train for an internal combustion engine. The module includes an electric linear actuator that lies on a top side of a base plate of the module. A slide plate, movable by the electric linear actuator by means of a linear guide, also lies on the top side of the base plate. A retaining wall extends under a bottom side of the base plate and has two actuation fingers. A free end of each actuation finger includes a contract surface for moving a coupling slide of a switchable rocker arm. In a region of an outer transverse side of the slide plate, a contact wall arranged in front of the electric linear actuator extends upward. The contact wall contacts an actuation pin of the electric linear actuator to move the slide plate in a longitudinal direction.

Bias mechanisms for a rocker arm and lost motion component of a valve bridge

Systems for actuating at least two engine comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The motion receiving end is biased toward the valve actuation motion source. A bias mechanism, supported by either the rocker arm, valve bridge or both, is configured to bias the motion receiving end of the rocker arm and the lost motion component into contact with each other. By maintaining such contact, the bias mechanism helps maintain the supply of hydraulic fluid from the rocker arm to the lost motion component.

ROCKER ARM ASSEMBLY FOR VALVE ACTUATION SYSTEMS

A rocker arm assembly for a valve actuation system of an engine is disclosed. The engine has at least one valve. The rocker assembly includes a rocker arm with a valve retention end, a valve bridge with a rocker engagement portion. The rocker engagement portion sustains an engaged position and a released position relative to the valve retention end. Further, a spring unit is disposed between the valve retention end and the rocker engagement portion. In the engaged position, the valve retention end is in operable abutment with the rocker engagement portion. In the released position, the spring unit is configured to provide a reaction force between the valve retention end and the rocker engagement portion to disconnect the valve bridge from the rocker arm.

SYSTEM COMPRISING AN ACCUMULATOR UPSTREAM OF A LOST MOTION COMPONENT IN A VALVE BRIDGE

Systems for actuating at least two engine valves comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. The lost motion component comprises a lost motion check valve disposed therein. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The rocker arm is in fluid communication with a hydraulic fluid supply. The systems also comprise an accumulator in fluid communication with the hydraulic fluid supply and disposed upstream of the lost motion check valve. In all embodiments, a fluid supply check valve may be disposed upstream of the accumulator and configured to prevent flow of hydraulic fluid from the accumulator back to the hydraulic fluid supply.

CYLINDER HEAD COVER STRUCTURE FOR ENGINE

A cylinder head cover structure for an engine includes a cylinder head cover. The cylinder head cover includes a metal cover member forming one end of the cylinder head cover in an engine length direction and a portion adjacent to the one end, and a resin cover member forming a portion of the cylinder head cover other than the metal cover member. The metal cover member is provided with a cam angle sensor attachment to which a cam angle sensor is attached, the cam angle sensor detecting a rotational position of a camshaft of the engine. 1. A cylinder head cover structure for an engine , the structure comprisinga cylinder head cover covering a top of a cylinder head of the engine, wherein a metal cover member forming one end of the cylinder head cover in an engine length direction and a portion adjacent to the one end; and', 'a resin cover member forming a portion of the cylinder head cover other than the metal cover member, and, 'the cylinder head cover includesthe metal cover member is provided with a cam angle sensor attachment to which a cam angle sensor is attached, the cam angle sensor detecting a rotational position of a camshaft of the engine.2. The structure of claim 1 , whereinthe cam angle sensor is one of two cam angle sensors and the cam angle sensor attachment is one of two cam angle sensor attachments,the metal cover member is provided with the two cam angle sensors spaced apart from each other in an engine width direction,a recess is formed on an end of the metal cover member toward the resin cover member in the engine length direction, and positioned between the two cam angle sensor attachments, the recess being notched away from the resin cover member in the engine length direction, anda protrusion is formed on an end of the resin cover member toward the metal cover member in the engine length direction, the protrusion protruding toward the metal cover member in the engine length direction to fit into the recess.3. The structure of claim 1 , whereina ...

SYSTEMS AND METHODS FOR COMBINED ENGINE BRAKING AND LOST MOTION EXHAUST VALVE OPENING

A combined dedicated braking and EEVO lost motion valve actuation systems for internal combustion engines provide subsystems for braking events and EEVO events on one or more cylinders. Various control strategies may utilize braking and EEVO capabilities to module one or more engine parameters, including aftertreatment temperature and engine load. 1. In an internal combustion engine having at least one cylinder and at least one respective exhaust valve associated with the at least one cylinder , a system for controlling motion of the at least one exhaust valve , comprising:a main event motion source associated with each of the at least one cylinder for providing main event motion to the respective at least one exhaust valve;an early exhaust valve opening (EEVO) motion source associated with each of the at least one cylinder for providing EEVO motion to the associated at least one exhaust valve;a main event valve train associated with each of the at least one cylinder for conveying main event motion and EEVO motion to the associated at least one exhaust valve;an EEVO lost motion component in at least one of the main event valve trains and adapted to absorb EEVO motion from the EEVO motion source in a first operational mode and adapted to convey EEVO motion from the EEVO motion source in a second operational mode;a braking motion source, separate from the main event motion source, associated with each of the at least one cylinder for providing braking event motion to the associated at least one exhaust valve; anda braking event valve train, separate from the main event valve train, associated with each of the at least one cylinder for conveying braking motion from the braking motion source to the associated at least one exhaust valve.2. The system of claim 1 , wherein the EEVO lost motion component comprises a valve bridge and a piston slidably disposed in the valve bridge.3. The system of claim 1 , wherein the main event motion source and the EEVO motion source ...

HEAT-INSULATING LAYER ON SURFACE OF COMPONENT AND METHOD FOR FABRICATING SAME

A heat-insulating layer () provided on a surface of a component () facing an engine combustion chamber contains hollow particles () made of an inorganic oxide, a filler material (), and a vitreous material () containing silicic acid as a main constituent. The vitreous material () is not in powder form, and surrounds and bonds the hollow particles () and the filler material () together. 1. A heat-insulating layer provided on a surface of a component , the heat-insulating layer includes:hollow particles made of an inorganic oxide;a filler material; anda vitreous material containing silicic acid as a main constituent, whereinthe vitreous material is not in powder form, and surrounds and bonds the hollow particles and the filler material together.2. The heat-insulating layer of claim 1 , whereinvolume ratios (vol %) of the hollow particles, the filler material, and the vitreous material are in the following ranges:hollow particles:filler material:vitreous material=40 to 75:1 to 5:23 to 58.3. The heat-insulating layer of claim 1 , whereinamong mass ratios (mass %) of the hollow particles, the filler material, and the vitreous material, the mass ratio of the vitreous material is the highest, andthe mass ratios of the hollow particles, the filler material, and the vitreous material are in the following ranges:hollow particles:filler material:vitreous material=17 to 48:5 to 14:44 to 75.4. The heat-insulating layer of claim 2 , whereina thermal conductivity of the heat-insulating layer is in a range of 0.15 W/m·K or more and 0.4 W/m·K or less.5. The heat-insulating layer of claim 2 , wherein{'sup': 3', '3, 'a volume specific heat of the heat-insulating layer is in a range of 400 kJ/m·K or more and 1300 kJ/m·K or less.'}6. The heat-insulating layer of claim 1 , whereinthe hollow particles contain at least one of silica or alumina as a main component, and a median diameter of the hollow particles is 5 μm or more and 30 μm or less.7. The heat-insulating layer of claim 1 , ...

Method and Device for Inspecting a Valve Drive in an Internal Combustion Engine

A method for ascertaining a valve position of a valve of an internal combustion engine having a multiplicity of valves. The method includes illuminating a combustion chamber of the internal combustion engine, detecting light emerging from the illuminated combustion chamber on a side, averted from the combustion chamber, of the valve for ascertainment, and determining the valve position of the valve for ascertainment by way of the detected light. 1. A method for ascertaining a valve position of a valve of an internal combustion engine having a multiplicity of valves , the method comprising the acts of:illuminating a combustion chamber of the internal combustion engine;detecting light emerging from the illuminated combustion chamber on a side, averted from the combustion chamber, of the valve for ascertainment; anddetermining the valve position of the valve for ascertainment by way of the detected light.2. A method for ascertaining a respective valve position of at least two valves of an internal combustion engine having a multiplicity of valves , the method comprising the acts of:illuminating a combustion chamber of the internal combustion engine;detecting light emerging from the illuminated combustion chamber on a side, in each case averted from the combustion chamber, of the valves for ascertainment; anddetermining the respective valve position of the at least two valves for ascertainment on the basis of the light detected in each case.3. The method as claimed in claim 1 , wherein the step of detecting the emerging light is performed continuously or discontinuously.4. The method as claimed in claim 3 , wherein the step of detecting the emerging light comprises a detection of a change in a light intensity and/or an obstruction of the light emerging from the combustion chamber.5. The method as claimed in claim 4 , further comprising detecting a crank angle of a crankshaft of the internal combustion engine.6. The method as claimed in claim 5 , wherein the internal ...

Hydraulic Drive for Accelerating and Braking Dynamically Moving Components

The aim of the invention is to ensure that a hydraulic drive () for accelerating and braking a gas exchange valve () of internal combustion engines or other reciprocating engines operates in a simple, reliable and recuperative manner. To this end, a first pressure tank () for providing a first pressure p, a restoring energy accumulator preferably embodied as a spring (), and at least one hydraulic basic pressure tank () having a lower pressure pthan the first pressure tank () are provided. A controllable opening () of a first valve () is arranged with at least one non-return valve () located upstream or downstream of the opening in the flow path, in a connection line () between the first hydraulic pressure tank () and the working cylinder (), said non-return valve allowing the pressure medium () to flow towards the working cylinder () but preventing it from flowing back towards the pressure tank (). In order to also initiate the closing movement or the braking of the gas exchange valve in a hydraulically simple and reliable manner, a controllable opening () of a second valve () is arranged in a second connection line () between the first pressure tank () and the working cylinder (), with a non-return valve () that prevents flow towards the working cylinder () but allows backflow towards the pressure tank (). 1. A hydraulic drive for accelerating and braking dynamically moving components , in particular valves in gas exchange controls of internal combustion engines and other reciprocating engines , wherein the hydraulic drive comprises the following:at least one component to be driven, in particular a valve, preferably a gas exchange valve or a plurality of gas exchange valves which can be actuated jointly via a valve bridge, of an internal combustion engine or another reciprocating engine;a working cylinder with comprising a pressure acting surface of a drive piston,{'sub': '1', 'at least one first pressure reservoir for providing a first pressure pof a hydraulic ...

MODULE OF A VARIABLE VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE

A module of a variable valve drive of an internal combustion engine is proposed that includes a push rod mounted longitudinally in a cylinder head of the internal combustion engine. The push rod is actuated by a linear actuator that includes an armature that makes contact, at least indirectly with the push rod, to displace it in a first longitudinal direction. A switchable rocker arm with a coupling slide arranged transversely to a longitudinal extent or side of the rocker arm corresponds to an actuating finger that extends from the push rod. The coupling slide includes a slide part that projects laterally from the rocker arm and can be acted upon by a free end of the actuating finger. Kinetic energy of the push rod is dissipated or converted at least partially via a separate damper in the first longitudinal direction before it reaches a final position. 1. A module of a variable valve drive of an internal combustion engine , comprisinga push rod configured to be mounted longitudinally in a cylinder head of the internal combustion engine, the push rod having an actuating finger;a linear actuator having an armature, the armature configured to displace the push rod in a first longitudinal direction;a switchable rocker arm having a coupling slide arranged transversely to a longitudinal side of the switchable rocker arm, the coupling slide arranged to be actuated by the actuating finger; andas the push rod is displaced by the linear actuator, kinetic energy of the push rod is dissipated at least partially by a damper.2. The module as claimed in claim 1 , wherein an electronic actuator is applied as the linear actuator.3. The module as claimed in claim 1 , wherein the damper acts upon the push rod before the push rod reaches a final position configured as a stop on the cylinder head.4. The module as claimed in claim 1 , wherein the damper dissipates kinetic energy of the push rod as the push rod moves in the first longitudinal direction.5. The module as claimed in claim 1 ...

ROCKER SUPPORT BOLT BUSHING

A metallic bushing that deforms under a force applied substantially parallel to its central longitudinal axis and then expands radially to take up the gap between a support bolt and a rocker arm shaft in an internal combustion engine in order to eliminate unwanted motion and subsequent excess engine noise. 1. An engine insert system , comprising:a bushing having a proximal end and a distal end, an inner surface and an outer surface,and an inner diameter and an outer diameter,wherein the outer diameter varies longitudinally;wherein the outer diameter and the inner diameter are selected to eliminate motion of a rocker arm shaft relative to a bolt while an engine is in operation;a rocker arm support;a bolt;a rocker arm shaft;wherein a space exists between said bolt and rocker arm shaft;wherein said bolt selectively engages with the inner diameter of said bushing; andapplies a force to the bushing causing said bushing to deform and fill said space between a bolt and a rocker arm shaft.2. The system of claim 1 , wherein the outer diameter of the proximal end of said bushing is larger than the outer diameter of the distal end of said bushing.3. The system of claim 2 , wherein the outer surface of said bushing tapers from the proximal end to the distal end of said bushing;4. The system of claim 3 , further comprising a longitudinal slit along the length of said bushing.5. The system of claim 4 , wherein said force is applied substantially parallel to the central longitudinal axis of said bushing.6. The system of claim 5 , wherein said force is created by the tightening of said bolt.7. An engine insert system claim 5 , comprising:a bushing having a proximal end and a distal end, an inner surface and an outer surface,and an inner diameter and an outer diameter, and a thicknesswherein the outer diameter varies longitudinally;wherein the inner diameter varies longitudinally;wherein the outer diameter of the proximal end of said bushing is larger than the outer diameter of the ...

COMBUSTION ENGINE WITH PNEUMATIC VALVE RETURN SPRING

A combustion engine includes an engine valve arranged to selectively open/close a combustion chamber of the engine, a cylinder head adjacent the combustion chamber, arranged to guide a valve stem of the engine valve, the engine valve being axially displaceable relative to the cylinder head between the combustion chamber closed position and the combustion chamber fully opened position, and a valve spring retainer connected to the valve stem. The valve spring retainer partly delimits a gas spring volume, which is in fluid communication with an adjacent gas volume via a port when the engine valve is in the combustion chamber closed position, and which is separated from the adjacent gas volume when the engine valve is in the combustion chamber fully open position, the port being open during at least 25% of the maximal stroke of the engine valve and being closed due to a displacement of the engine valve. 250845. The combustion engine according to claim 1 , wherein said port () is open during at least 35 percentage of the maximal stroke of the engine valve () claim 1 , preferably at least percentages.3508. The combustion engine according to claim 1 , wherein said port () is open during a maximum of 70 percentage of the maximal stroke of the engine valve () claim 1 , preferably a maximum of 60 percentages.4373883946394746473737473748. The combustion engine according to claim 1 , wherein the cylinder head comprises a lead through () claim 1 , which is arranged to guide the valve stem () of the engine valve () claim 1 , said valve spring retainer () and a cylinder shaped sleeve () that extends from the valve spring retainer () forming a valve spring cover () claim 1 , the cylinder shaped sleeve () of the valve spring cover () being telescopically displaceable in relation to said lead through () claim 1 , radially outside the lead through () claim 1 , and the valve spring over () and the lead through () delimiting said gas spring volume ().5464750484987. The combustion engine ...

OIL JET ARM AND METHOD FOR LUBRICATING CHAIN SPAN EMPLOYING SAID OIL JET ARM, AND CHAIN TENSIONING DEVICE AND METHOD FOR LUBRICATING CHAIN SPAN EMPLOYING SAID CHAIN TENSIONING DEVICE

The problem to be solved by the present invention lies in making it possible to reduce costs and to reduce the size of an oil pump, without impeding the degree of freedom in chain layout. An oil jet is constructed in order to supply lubricating oil to a tension-side span of a chain C while also causing a tensioning force to act on a slack-side span of the chain C. The oil jet arm is provided with a pivoting-side part A, and a tip-end side part B which is provided in such a way as to be pivotable about the pivoting-side part A and is acted on by a pressing force from a piston of a hydraulic tensioner and an oil ejection hole for ejecting to the outside oil supplied from an oil discharge hole in the piston is formed in the tip-end side part B. Oil ejected from the oil ejection hole is supplied to a portion E on the meshing start side with a sprocket on the tension-side span of the chain C. 1. An oil jet arm for supplying lubricating oil to a tension-side span of a chain while causing a tensioning force to act on a slack-side span of the chain ,said oil jet arm being provided with a pivoting-side part, and a tip-end side part which is provided in such a way as to be pivotable about the pivoting-side part and is acted on by a pressing force from a piston of a hydraulic tensioner, andsaid oil jet arm comprises an oil ejection hole for ejecting to the outside oil introduced from the piston or from the pivoting-side part.2. The oil jet arm as claimed in claim 1 , wherein the oil which is ejected from the oil ejection hole is supplied to a portion on the meshing start side with a sprocket on the chain tension-side span.3. The oil jet arm as claimed in claim 1 , wherein the oil ejection hole is provided in the tip-end side part or in the pivoting-side part.4. The oil jet arm as claimed in claim 1 , wherein the oil ejection hole is provided in the pivoting-side part claim 1 , and an oil path for feeding claim 1 , to the pivoting-side part claim 1 , oil introduced from the ...

SWITCHABLE ROCKER ARM

A valve train assembly includes: at least one dual body rocker arm having a first body, a second body, a latching arrangement for latching and unlatching the first body and the second body, the latching arrangement having a latching pin that is biased to an unlatched configuration; and an actuator arrangement for controlling the latching arrangement, the actuator arrangement being able to contact the latching arrangement to cause the latching pin to be moved into a latched configuration in which it latches the first and second bodies together. In use, movement of the rocker arm under action of a cam to cause a valve event moves the actuator arrangement out of contact with the latching arrangement while a contact force between the latching pin and one or other of the first and second bodies maintains the latching pin in the latched configuration. 1. A valve train assembly , comprising:at least one dual body rocker arm comprising a first body, a second body, a latching arrangement configured to latch and unlatch the first body and the second body, the latching arrangement comprising a latching pin that is biased to an unlatched configuration; andan actuator arrangement configured to control the latching arrangement, the actuator arrangement being configured to contact the latching arrangement to cause the latching pin to be moved into a latched configuration in which it latches the first and second bodies together,wherein, in use, movement of the rocker arm under action of a cam to cause a valve event moves the actuator arrangement out of contact with the latching arrangement while a contact force between the latching pin and one or other of the first and second bodies maintains the latching pin in the latched configuration.2. The valve train assembly according to claim 1 , wherein the first body comprises an inner body of the dual body rocker arm claim 1 , the second body comprises an outer body of the dual body rocker arm claim 1 , and the contact force that ...

METHOD FOR ADAPTATION OF A DETECTED CAMSHAFT POSITION, CONTROL UNIT FOR CARRYING OUT THE METHOD, INTERNAL COMBUSTION ENGINE, AND VEHICLE

A method for adaptation of a detected camshaft position of a camshaft in an internal combustion engine with: Detection of an ACTUAL gas signal in a gas space that is associated with the camshaft and is associated with a detected camshaft position; Processing of the gas signal to produce an ACTUAL gas criterion; Modeling of multiple simulated gas criteria, each of which is associated with a target camshaft position; Determination of a simulated gas criterion with the least deviation from the ACTUAL gas criterion; Determination of an ACTUAL camshaft position that corresponds to the simulated gas criterion with the least deviation from the ACTUAL gas criterion; Determination of a camshaft position correction value from the difference between the ACTUAL camshaft position determined and the detected camshaft position; Determination of corrected camshaft positions by correcting the detected camshaft positions with the camshaft position correction value. 1. A method for adaptation of a detected camshaft position of a camshaft in an internal combustion engine , the method comprising:detecting an ACTUAL gas signal in a gas space that is associated with the camshaft and is associated with a detected camshaft position;processing the gas signal to produce an ACTUAL gas criterion;modeling multiple simulated gas criteria, which are associated with a target camshaft position;comparing the simulated gas criteria with the ACTUAL gas criterion;determining a simulated gas criterion with the least deviation from the ACTUAL gas criterion;determining an ACTUAL camshaft position that corresponds to the simulated gas criterion with the least deviation from the ACTUAL gas criterion;determining a camshaft position correction value from the difference between the ACTUAL camshaft position determined and the detected camshaft position; anddetermining at least one corrected camshaft position by correcting the detected camshaft positions with the camshaft position correction value.2. The method ...

LOW PROFILE SWITCHABLE FINGER FOLLOWER

A switchable finger follower is provided having an inner lever with a sliding pad located between first and second inner lever ends. The sliding pad has at least one of an anti-friction coating or a surface finish of Ra 0.05 or better forming a cam contact surface. An outer lever supports the inner lever, and includes a first outer lever end mounted for pivoting movement at the first end of the inner lever by a pivot axle. A coupling pin is arranged on one of the inner or outer levers on an end opposite from the pivot axle. The coupling pin has a coupling projection with a first locking surface, and is moveable from a first, locked position with the first locking surface engaged with a second locking surface located on the other of the inner lever or the outer lever, to a second, unlocked position. A lost motion element is arranged between the inner lever and the outer lever. 1. A switchable finger follower comprising:an inner lever having first and second inner lever ends, a sliding pad located between the first and second inner lever ends, the sliding pad having at least one of an anti-friction coating or a surface finish of Ra 0.05 or better forming a cam contact surface;an outer lever having two outer arms that extend along longitudinal sides of the inner lever, and a first outer lever end mounted for pivoting movement at the first end of the inner lever by a pivot axle;a coupling pin arranged to move longitudinally within a coupling pin bore located on one of the inner lever or the outer lever on an end opposite from the pivot axle, the coupling pin having a coupling projection with a first locking surface;the coupling pin is moveable from a first, locked position with the first locking surface engaged with a second locking surface located on the other of the inner lever or the outer lever, to a second, unlocked position where the first locking surface is not engaged with the second locking surface; anda lost motion element arranged between the inner lever and ...

HELICAL FOLLOWER INTERNAL COMBUSTION ENGINE

The present invention is helical follower internal combustion engine. The present invention has a smooth, cylindrical follower orthogonally attached to a piston rod. The follower fits into two connected half-cylindrical, helical grooves formed by a two-piece cylindrical sleeve. The two-piece cylindrical sleeve is attached to a rotating cylindrical hub. Reciprocal motion of the piston causes rotation of the rotating cylindrical hub. The present invention has a feature that prevents the piston from rotating. The present invention can create electricity by connecting a rotor coil to the rotating cylindrical hub and placing a stator coil in near proximity. In an alternative embodiment, the present invention has an external drive shaft attached to the rotating cylindrical hub. 1. A helical follower internal combustion engine comprising;a piston in a combustion chamber, wherein the piston has a piston head and a piston rod, wherein a fuel-air mixture is capable of moving the piston in a reciprocal motion; and wherein the piston rod has a hole into which is seated and fixed a smooth, cylindrical follower that is orthogonal to the piston rod;a rotating cylindrical hub into which the piston rod extends and to which a rotor coil is attached;a stator coil from which electrical output can be drawn when the rotor coil is rotating;a two-piece cylindrical sleeve, comprised of an upper piece and a lower piece, fastened externally to the rotating cylindrical hub, wherein the two-piece cylindrical sleeve has two half-cylindrical, helical grooves; andan anti-rotation feature that prevents the piston from rotating;wherein the follower fits in the two-half cylindrical, helical grooves.2. The helical follower internal combustion engine of claim 1 , wherein the follower pushes on the lower piece of the two-piece cylindrical sleeve when the piston head moves towards the rotating cylindrical hub claim 1 , causing the rotating cylindrical hub to rotate.3. The helical follower internal ...

REFUSE VEHICLE BODY ASSEMBLY

A vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis rearward of the cab, a bracket, and a valve assembly. The body defines a compartment. The body includes a bottom wall defining a horizontal plane and a front wall defining a vertical plane. The bracket has an arm that is coupled to and extends rearward from the front wall into the compartment at an angle such that the arm is neither parallel with the horizontal plane nor parallel with the vertical plane. The valve assembly is coupled to the bracket such that at least a portion of the valve assembly is disposed within the compartment. 1. A vehicle comprising:a chassis;a cab coupled to the chassis;a body coupled to the chassis rearward of the cab, the body defining a compartment, the body including a bottom wall defining a horizontal plane and a front wall defining a vertical plane;a bracket having an arm that is coupled to and extends rearward from the front wall into the compartment at an angle such that the arm is neither parallel with the horizontal plane nor parallel with the vertical plane; anda valve assembly coupled to the bracket such that at least a portion of the valve assembly is disposed within the compartment.2. The vehicle of claim 1 , wherein the front wall defines an aperture through which the valve assembly is accessible.3. The vehicle of claim 2 , wherein a portion of the valve assembly extends through the aperture.4. The vehicle of claim 2 , further comprising a removable panel coupled to the front wall claim 2 , the removable panel positioned to selectively enclose at least a portion of the aperture.5. The vehicle of claim 4 , further comprising:an engine; andan exhaust system coupled to the engine and configured to receive exhaust gasses from the engine;wherein the removable panel extends at least partially across the aperture to substantially isolate the valve assembly from the exhaust system.6. The vehicle of claim 1 , further comprising a conduit fluidly ...

VARIABLE VALVE DRIVING MECHANISM OF ENGINE, AND ENGINE

A variable valve driving mechanism of an engine, and the engine. The variable valve driving mechanism comprises a rocker arm () configured to control open and close of a valve () and a servo rocker arm () arranged in parallel to the rocker arm (). A swing end of the servo rocker arm () extends to the top of the swing end of the rocker arm (). A valve adjustment gap (-) provided in the swing direction of the servo rocker arm () and the rocker arm () is formed between the servo rocker arm () and the rocker arm (). A gap compensating device telescopically filling the valve adjustment gap (-) and configured to adjust the valve () to be delayed to close or open in advance when extending to the valve adjustment gap (-) is provided between the servo rocker arm () and the rocker arm (). When the valve () is open or closed normally, the gap compensating device is contracted, and the rocker arm () is not in contact with the servo rocker arm () in the swing process by means of the valve adjustment gap (-). When it is required to control the valve () to be delayed to close or open in advance, the gap compensating device extends into the valve adjustment gap (-) to eliminate the gap, and the open/close time of the valve () is adjusted to avoid the problem that the valve is not properly closed caused by a plurality of oil control paths. 1. An engine variable valve driving mechanism , comprising:a rocker arm configured to control opening or closing of a valve, anda servo rocker arm arranged in parallel to the rocker arm,wherein a swing end of the servo rocker arm extends to a top of a swing end of the rocker arm, and a valve adjustment gap is present between the servo rocker arm and the rocker arm in a swing direction of the servo rocker arm and the rocker arm;a gap compensating device for telescopically filling the valve adjustment gap and adjusting the valve to be delayed to close or open in advance when the gap compensating device extending into the valve adjustment gap is ...

OIL COOLING FOR ELECTROMAGNETIC LATCH HOUSED IN ROCKER ARM

A valvetrain includes a rocker arm assembly basing a rocker arm and an electromagnetic latch assembly. An electromagnet of the latch assembly is housed within a chamber formed by the rocker arm. Passageways suitable for oil cooling of the electromagnet are formed through and inside the rocker arm. In some embodiments, oil for cooling is supplied through a pivot. In some embodiments, oil for cooling is obtained from oil splash. Oil cooling may allow modes of operation such as of dynamic cylinder deactivation and dynamic variable valve actuation to be used without overheating the electromagnet. 115-. (canceled)16. A valvetrain for an internal combustion engine of a type that has a combustion chamber , a moveable valve having a seat formed in the combustion chamber , and a camshaft , comprising:a rocker arm assembly comprising a rocker arm that forms a chamber having edges and a cam follower configured to engage a cam mounted on a camshaft as the camshaft rotates;a housing inside the chamber;an electromagnetic latch assembly comprising an electromagnet inside the housing and a latch pin translatable between a first position and a second position; andoil passages in a space between the housing and the edges of the chamber.17. The valvetrain of claim 16 , wherein the oil passages are formed by channels in either an inward facing surface of the chamber or an outward facing surface of the housing.18. The valvetrain of claim 16 , wherein the chamber is a retrofit hydraulic chamber.19. The valvetrain of claim 16 , wherein the oil passages communicate with an opening onto a surface of the rocker arm that has a gothic profile.20. The valvetrain of claim 16 , further comprising:a pivot that provides a fulcrum for the rocker arm assembly;wherein the oil passages communicate with an opening on a surface of the rocker arm that interfaces with the pivot.21. The valvetrain of claim 20 , wherein oil flow from the pivot the space between the housing and the edges of the chamber ...

ELECTROHYDRAULIC VALVE AND METHOD FOR PRODUCING THE ELECTROHYDRAULIC VALVE

An electro hydraulic valve for a cam phaser, including an electromagnetic actuator assembly, and a hydraulic assembly, wherein the electromagnetic actuator assembly and the hydraulic assembly are arranged axially aligned along a longitudinal axis, wherein the hydraulic assembly includes a valve housing in which a valve piston is arranged axially movable along the longitudinal axis, wherein a plunger for positioning the valve piston along the longitudinal axis is arranged within the electromagnetic actuator assembly, and wherein the electromagnetic actuator assembly and the hydraulic assembly are connected with one another indirectly or directly, wherein the electromagnetic actuator assembly includes an actuator housing and a friction or form locking connection of the electromagnetic actuator assembly with the hydraulic assembly is provided by an ultrasonic weld between the actuator housing and the valve housing. 1. An electro hydraulic valve for a cam phaser , the electrohydraulic valve comprising:an electromagnetic actuator assembly, anda hydraulic assembly,wherein the electromagnetic actuator assembly and the hydraulic assembly are arranged axially aligned along a longitudinal axis,wherein the hydraulic assembly includes a valve housing in which a valve piston is arranged axially movable along the longitudinal axis,wherein a plunger for positioning the valve piston along the longitudinal axis is arranged within the electromagnetic actuator assembly, andwherein the electromagnetic actuator assembly and the hydraulic assembly are connected with one another indirectly or directly,wherein the electromagnetic actuator assembly includes an actuator housing and a friction or form locking connection of the electromagnetic actuator assembly with the hydraulic assembly is provided by an ultrasonic weld between the actuator housing and the valve housing.2. The electro hydraulic valve according to claim 1 , wherein the actuator housing of the electromagnetic actuator assembly ...

DEVICE FOR CONTROLLING AT LEAST ONE VALVE IN AN INTERNAL COMBUSTION ENGINE

A gas valve actuation device for an internal combustion engine includes a first arrangement for actuating two gas valves in a first lift event, a second arrangement for selectively actuating a first one of the two gas valves in a second lift event, a fluid circuit for controlling actuation of the first gas valve in the second lift event, wherein the fluid circuit includes a first fluid circuit valve which is arranged to be controlled by the first actuation arrangement. 1. A gas valve actuation device for an internal combustion engine , wherein the device comprisesfirst means for actuating two gas valves in a first lift event,second means for selectively actuating a first one of the two gas valves in a second lift event,a fluid circuit for controlling actuation of the first gas valve in the second lift event,wherein the fluid circuit comprises a first fluid circuit valve, which is arranged to be controlled by the first actuation means,wherein the first fluid circuit valve is arranged to be open when the two gas valves are not actuated for the first lift event and closed when the two gas valves are actuated for the first lift event, for creating conditions for achieving an exact positioning of the second actuation means an engaged state thereof.2. A device according to claim 1 , wherein the second actuation means comprises the fluid circuit.3. A device according to claim 1 , wherein the first actuation means comprises a first rocker arm for actuating the two gas valves in the first lift event claim 1 , and the second actuation means comprises a second rocker arm for actuating the first one of the two gas valves in the second lift event.4. A device according to claim 3 , wherein the first fluid circuit valve comprises a moveably arranged control member claim 3 , which is arranged in such a way in relation to the first rocker arm that it may be moved by a movement of the first rocker arm for opening and claim 3 , closing the valve.5. A device according to claim 4 , ...

SPOOL SHUTTLE CROSSOVER VALVE AND COMBUSTION CHAMBER IN SPLIT-CYCLE ENGINE

A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders. 1. A split-cycle engine comprising:a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke;a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; anda valve cylinder housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move reciprocally within the valve cylinder and relative to the first and second cylinders, and wherein the valve has a port that fluidly couples the internal chamber to the first and second cylinder.2. The engine of claim 1 , wherein claim 1 , during movement of the valve claim 1 , the internal chamber fluidly couples with the first cylinder and fluidly couples with the second cylinder separately.3. The engine of claim 1 , wherein claim 1 , during movement of the valve claim 1 , the internal chamber fluidly couples with the first cylinder and fluidly couples with the second cylinder simultaneously.4. The engine of claim 3 , wherein claim 3 , during movement of the valve claim 3 , the internal chamber fluidly couples with the first cylinder and fluidly couples with the second cylinder simultaneously claim 3 , and wherein the valve and ...

OVERHEAD VALVE ACTUATION MECHANISM FOR ENGINE

A rocker arm includes a pivot portion that is journaled by a rocker arm shaft, a contact portion that projects from the pivot portion to a side of a valve cam, and a pressing portion that projects from the pivot portion to a side of a valve. While including a slipper projecting from the pivot portion in outer side in an axial direction to a side of a camshaft, an overhead valve actuation mechanism for the engine includes a stopper portion with which the slipper comes in contact when the rocker arm swings and reaches a predetermined position at a position opposing the slipper. 1. An overhead valve actuation mechanism for an engine , comprising:a cylinder head;a camshaft rotatably supported by the cylinder head, the camshaft including one or a plurality of valve cams, the camshaft operating opening and closing of an air intake side or air exhaust side valve via the valve cam;a rocker arm swung by the valve cam of the camshaft, the rocker arm acting on the valve to open and close the valve; anda rocker arm shaft supported by the cylinder head, the rocker arm shaft swingably supporting the rocker arm, wherein a pivot portion that is journaled by the rocker arm shaft and serves as a swing center;', 'a contact portion that receives a pressure from the valve cam;', 'a pressing portion that projects to a side of the valve to press the valve in swinging; and', 'a slipper formed to project outward from the rocker arm, and, 'the rocker arm includesthe overhead valve actuation mechanism for the engine includes a stopper portion with which the slipper comes in contact when the rocker arm swings and reaches a predetermined position at a position opposing the slipper.2. The overhead valve actuation mechanism for the engine according to claim 1 , wherein the stopper portion is formed so as to come in contact with the slipper when the rocker arm is at a swing position exceeding a maximum swing position that corresponds to a top portion of the valve cam.3. The overhead valve ...

METHOD OF SETTING TAPPET CLEARANCE AND DEVICE THEREFOR

Even in the case where, due to distortion (undulation) or the like of an end surface of an adjusting screw abutting on a valve stem end, there exists a non-linear undulation movement amount in a movement amount of the end surface with respect to a rotation return angle of the adjusting screw, the undulation movement amount is continuously measured, and a screw return movement amount based on a screw pitch and on the rotation return angle is continuously calculated, and, when a total movement amount of the undulation movement amount and the screw return movement amount has attained a prescribed clearance, return rotation is ended. 1. A method of setting tappet clearance by which a tappet clearance between an end surface of an adjusting screw screwed into an acting end of a rocker arm , and a valve stem end , is set to a prescribed clearance , the method comprising:a step of starting return rotation of the adjusting screw from a position where the end surface of the adjusting screw is abutting on the valve stem end due to weight of the rocker arm on an acting end side, and a pressing torque on the valve stem end has a zero value, the return rotation being started in a state where the abutting is being continued;a step of, when rotation is being returned in the state where the abutting is being continued, continuously measuring, as an undulation movement amount, movement of the end surface of the adjusting screw in both directions in an axial direction of the adjusting screw due to undulation, and continuously calculating, as a screw return movement amount, movement based on a screw pitch in a return direction in the axial direction of the adjusting screw and on a rotation return angle; anda step of ending the return rotation of the adjusting screw when a total movement amount of the undulation movement amount and the screw return movement amount that have been continuously acquired has attained the prescribed clearance.2. The method of setting tappet clearance ...

OIL PASSAGE SWITCHING VALVE AND VALVE TIMING CHANGING APPARATUS

An oil passage switching valve suitable for a valve timing changing apparatus includes: a valve body, opening or closing an oil passage of operating oil; an urging spring, urging to position the valve body to a position corresponding to the retard position in a pause state; and a switching element, positioning the valve body to a position corresponding to the retard position when a state quantity of the operating oil is in a first range, and switching a position of the valve body in response to the state quantity (pressure or temperature) of the operating oil while resisting an urging force of the urging spring to position the valve body to a position corresponding to the advance position when the state quantity of the operating oil is in a second range greater than the first range. 1. An oil passage switching valve , suitable for a valve timing changing apparatus to switch an oil passage for supplying or discharging operating oil with respect to a retard chamber and an advance chamber to change a valve timing of an engine to a first angle position or a second angle position , wherein the oil passage switching valve comprises:a valve body, opening or closing an oil passage of the operating oil;an urging spring, urging to position the valve body to a position corresponding to the first angle position in a pause state; anda switching element, switching a position of the valve body in response to the state quantity of the operating oil while resisting an urging force of the urging spring to position the valve body to the position corresponding to the first angle position when a state quantity of the operating oil is in a first range, and to position the valve body to a position corresponding to the second angle position when the state quantity of the operating oil is in a second range greater than the first range.2. The oil passage switching valve as claimed in claim 1 , wherein the first angle position is a retard position claim 1 , and the second angle position is an ...

ELECTROMAGNETIC ACTUATING DEVICE AND CAMSHAFT ADJUSTER

The invention relates to an electromagnetic actuating device () for a camshaft adjustment device of an internal combustion engine of a motor vehicle, with an elongated actuating element () forming an engagement region on the end side and movable by the force of a coil device () provided in a stationary manner, which actuating element preferably has in parts a cylindrical covering contour and penetrates a cut-out () in permanent magnet means () arranged on the shell side, which are constructed for cooperating with a stationary core region () comprising a core body (), and which actuating element lies in a switching position with a contact surface (), on the end side on the actuating element side, against a contact surface () on the core region side. Provision is made that the contact surface () on the core region side is formed at least in part by a contact element () fixed in the core body (), which contact element is constructed from a material which has a greater hardness than the material of the core body (). 11229865151011. An electromagnetic actuating device () for a camshaft adjustment device of an internal combustion engine of a motor vehicle , with comprising an elongated actuating element () forming an engagement region on an end side and movable by force of a coil device () provided in a stationary manner , which actuating element has in parts a cylindrical covering contour and penetrates a cut-out () in permanent magnet means () arranged on a shell side , which are constructed for cooperating with a stationary core region () comprising a core body () , and which actuating element lies in a switching position with a contact surface () , on the end side on an actuating element side , against a contact surface () on a core region side , wherein{'b': 11', '16', '15', '15, 'the contact surface () on the core region side is formed at least in part by a contact element () fixed in the core body (), which contact element is constructed from a material which has a ...

Self-contained e-foot

A rocker arm, comprises a first outer arm and a second outer. A pivot body is joined between the first end of the first outer arm and the third end of the second outer arm. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm pivotable adjacent the pivot body. An axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. An outer arm connector spans between the second end of the first outer arm and the fourth end of the second outer arm. A valve seat insert is constrained within the inner arm assembly between the outer arm connector and the axle. Alternatively, a valve seat insert hangs from the axle and is constrained within the inner arm assembly, the valve seat insert comprising a front and a rear cusp.

VALVE ACTUATION MECHANISM AND AUTOMOTIVE VEHICLE COMPRISING SUCH A VALVE ACTUATION MECHANISM

A valve actuation mechanism for an internal combustion engine includes rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston, housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly connected to the bore, from a first position to a second position with respect to the rocker, in which a cam follower of the rocker is adapted to read at least one auxiliary valve lift sector of a cam of the camshaft so as to perform an engine operating function. Each rocker includes a check valve adapted to control the fluid pressure raise in the chamber. The valve actuation mechanism includes, for each rocker, a stopper fast with a housing of the engine and adapted to exert, on a member of the rocker, a force for opening a valve independent from the check valve, adapted to release fluid from the chamber when the piston has to be moved from its second position to its first position. 193. A valve actuation mechanism for an internal combustion engine on an automotive vehicle , comprising rockers moved by a camshaft , each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder , via an activation piston , housed in a bore of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber fluidly connected to the bore , from a first position to a second position with respect to the rocker , in which a cam follower () of the rocker is adapted to read at least one auxiliary valve lift sector of a can of the camshaft so as to perform an engine operating function , each rocker comprising a check valve adapted to control the fluid pressure raise in said chamber , wherein the valve actuation mechanism comprises , for each rocker , a stopper fast with a housing of the engine and adapted to exert , on a ...

Assembling and disassembling a mechanical seal

A mechanical seal clamping assembly includes a base, a fulcrum, a lever, and a cap. The base supports a mechanical seal. The lever is pivotally coupled to the fulcrum at a first pivot spaced from the base. The cap is coupled to the lever and is movable by the lever with respect to the base. The cap is movable from a first position to a second position. In the first position, the cap is at a first distance away from the base. In the second position, the cap is at a second distance away from the base larger than the first distance. The lever moves the cap from the second position toward the first position to engage the mechanical seal to clamp, between the cap and the base, the mechanical seal to maintain a spring of the mechanical seal compressed during assembly or disassembly of the mechanical seal.

Method of remanufacturing a rocker arm and remanufactured rocker arm

A method of remanufacturing a rocker arm having a body defining a socket portion is disclosed. The method includes machining the socket portion to remove a worn surface and form a seat configured to receive an insert member therein. The method further includes disposing the insert member within the seat and coupling the insert member to the seat.

System comprising a pumping assembly operatively connected to a valve actuation motion source or valve train component

A system for supplying hydraulic fluid in an internal combustion engine comprises a pumping assembly disposed within a housing and a hydraulic circuit, operatively connected to the pumping assembly, also disposed within the housing, which housing may be fixed or dynamic. A source of pumping motions is operatively connected to the pumping assembly, which source of pumping motions may comprise a valve actuation motion source or a component of a valve train between the valve actuation motion source and an engine valve. Pumping motions applied to the pumping assembly by the source of pumping motions causes hydraulic fluid received from a supply pressure hydraulic fluid input of the hydraulic circuit to be transmitted to an increased pressure hydraulic fluid output of the hydraulic circuit.

Vertical Sliding Valve Arm

Improvements in a vertical sliding valve arm has been disclosed with systems and methods related to eliminating the common pivot-type rocker arm and reversing the use of the valve spring in internal combustion engines. More specifically, the camshaft lobes activate a sliding valve arm to close the engine valve instead of opening it and the valve spring is used to push open the valve instead of closing it. 1. A system of valve actuation by way of a rotating camshaft comprising:a rotating cam pushing up on a valve lifter and a pushrod to contact a horizontal sliding arm;the horizontal sliding arm contacts the pushrod on a first end of the horizontal sliding arm and is lifted by the pushrod;an engine valve is attached on the other end of the horizontal sliding arm, whereby a rise and a fall of the horizontal sliding arm opens and closes the engine valve;a spring is mounted on top of the horizontal sliding arm between the pushrod and the engine valve such that when the horizontal sliding arm rises, it compresses the spring and when the horizontal sliding arm is lowered, the spring becomes uncompressed and provides a force to open the engine valve and also provides a second force to keep the valve lifter in contact with the rotating cam.2. The system of valve actuation by way of a rotating camshaft according to claim 1 , wherein the spring is supported on a sliding arm post.3. The system of valve actuation by way of a rotating camshaft according to claim 2 , wherein the sliding arm post is secured into a cylinder head.4. The system of valve actuation by way of a rotating camshaft according to claim 3 , further includes a bushing between the horizontal sliding arm and the sliding arm post.5. The system of valve actuation by way of a rotating camshaft according to claim 2 , wherein the sliding arm post has a threaded stein.6. The system of valve actuation by way of a rotating camshaft according to claim 1 , wherein the threaded stein is configured to allow for compression ...

VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

A valve timing control apparatus for an internal combustion engine includes: a power feeding brush including a tip end portion arranged to be slidably abutted on the slip ring; and a rotation angle sensing mechanism provided between one end portion of the motor output shaft, and the cover member confronting the one end portion of the motor output shaft, and arranged to sense a rotation angle of the motor output shaft, the power feeding brush being disposed in a range in which the power feeding brush is slid on the slip ring, in a range from a position which is deviated a predetermined angle in a rotation direction of the motor housing from an uppermost position of the other of the electric motor and the cover member in a vertical direction, to a lowermost position. 1. A valve timing control apparatus for an internal combustion engine comprising:a first member to which a rotational force is transmitted from a crank shaft;a second member which is arranged to be rotated relative to the first member, and to rotate as a unit with a cam shaft;an electric motor which includes a motor housing that is provided to the first member to rotate as a unit with the first member, and a motor output shaft, and which is arranged to rotate the second member relative to the first member by the motor output shaft;a cover member which is disposed on an outer end surface of the electric motor to confront the outer end surface of the electric motor in an axial direction;a slip ring which has an annular shape, which is provided to one of the electric motor and the cover member, and which is provided coaxially with the motor output shaft;a power feeding brush which is provided to the other of the electric motor and the cover member, and which includes a tip end portion arranged to be slidably abutted on the slip ring; anda rotation angle sensing mechanism which is provided between one end portion of the motor output shaft, and the cover member confronting the one end portion of the motor ...

ACTUATION APPARATUS FOR VARIABLE VALVE DRIVE

An actuator for actuating valve-lift modes of a valve train assembly of an internal combustion engine, The valve train assembly is capable of being switched between a first valve-lift mode and a second valve-lift mode. The actuator includes a first body and a second body, The second body is mounted for reciprocal movement with respect to the first body between a first position to cause the first valve-lift mode and a second position to cause the second valve-lift mode. The actuator includes a third body supported by the second body, the third body for moving a first component of the valve train assembly to cause the second valve-lift mode, The third body is moveable relative to the second body. The actuator includes a first biaser for biasing the third body away from the second body towards the first component of the valve train assembly. 1. An actuator for actuating vale-lift modes of a valve train assembly of an internal combustion engine , the valve train assembly capable of being switched between a first valve-lift mode and a second valve-lift mode , the actuator comprising:a first body;a second body mounted for reciprocal movement with respect to the first body between a first position to cause the first valve-lift mode and a second position to cause the second valve-lift mode;a third body supported by the second body, the third body for moving a first component of the valve train assembly to cause the second valve-lift mode, wherein the third body is moveable relative to the second body; anda first biase for biasing the third body away from the second body towards the first component of the valve train assembly.2. The actuator according to claim 1 , wherein the actuator is configured such that in use claim 1 , the first position is away from the first component of the valve train assembly relative to the second position.3. The actuator according to claim 1 , wherein the third body is moveable between a third position and a fourth position relative to the ...

LATCH PIN FOR USE IN VALVE LIFTER AND VALVE LIFTER

Shown is a latch pin for use in a valve lifter and a valve lifter including the same. The latch pin for selectively latching within a pin chamber provided in the valve lifter is configured as a whole as a cylindrical pin with one end in the shape of a spherical crown, wherein a stepped flat is formed on radially one side of said one end and is dimensioned to be received within the pin chamber to engage with an axial latching surface thereof. On the top side of said one end, a first relief is formed by beveling the spherical crown, and on the radially other side opposite to the stepped flat across said first relief, a second relief is formed by beveling the spherical crown, wherein the second relief radially adjoins the first relief and circumferentially adjoins a remaining pin face in the shape of the spherical crown. 1. A latch pin for use in a valve lifter and for selectively latching within a pin chamber provided in the valve lifter ,the latch pin as a whole is configured as a cylindrical pin with one end in the shape of a spherical crown, wherein a stepped flat is formed on radially one side of said one end and is dimensioned to be received within the pin chamber to engage with an axial latching surface thereof,characterized in that,on the top side of said one end, a first relief is formed by beveling the spherical crown, andon the radially other side opposite to the stepped flat across said first relief, a second relief is formed by beveling the spherical crown, wherein the second relief radially adjoins the first relief and circumferentially adjoins a remaining pin face in the shape of the spherical crown.2. The latch pin of claim 1 , wherein one or both of the first relief and the second relief is a flat surface.3. A valve lifter claim 1 , comprising:a cylindrical hollow lifter body;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a latch pin according to ; and'}a pin housing arranged inside said lifter body and configured to receive the latch pin,said ...

SELF COOLED ENGINE

Self-cooled engine including a cylinder, a cylinder head and a turbo-piston which freely reciprocates inside the cylinder. The cylinder head has a valve that achieves circumferential suction of air-fuel mixture into the cylinder. The valve mechanism is closed and opened by cylindrical cam by means of cam shaft. Circumferential suction of air-fuel mixture enables the cylinder to cool itself and to burn the fuel at the energy center effectively. The force of incoming stream of air-fuel mixture rotates the impeller on the piston which acts as a fan to cool the cylinder walls. The impeller blades deflect the flame from reaching the cylinder walls and acts as a thermal barrier between the energy center and cylinder walls. The high intensity compression swirl (HICS) created at the end of the compression stroke to ensure that the fuel combustion is efficient and instantaneous release of maximum energy. 1. An engine having at least one cylinder comprisinga cylinder head body comprising a Sunflower mechanism, an exhaust valve mechanism; anda reciprocating turbo-piston assembly movable through a stroke in the cylinder.2. The engine as claimed in claim 1 , wherein;the cylinder head body comprises:an inlet manifold and an exhaust manifold are disposed on the cylindrical surface of the cylinder head body;a valve lock housing on the cylindrical surface of the cylinder head body to accommodate a Sunflower valve upper guide lock, a Sunflower valve lock, a Sunflower valve lower guide lock, Sunflower valve assembly cover and a cylindrical cam follower;a bracket provides bearing support for the camshaft and pushrod;an annular protrusion disposed on the outer cylindrical surface of the exhaust chamber to stop the Sunflower valve assembly movement along the cylinder axis;a recess below the said annular protrusion to receive Sunflower assembly circlip disposed on the outer cylindrical surface of the exhaust chamber to stop the Sunflower valve assembly movement along the cylinder axis; ...

Lubricated engine compensator assembly and motorcycle having the same

The present invention provides a compensator assembly for use in a motorcycle. The compensator assembly includes an input member, and an output member driven by the input member through a torque-buffering interface. The compensator assembly also includes one or more lubrication passageways formed therein extending between a distal end and one or more interfaces to provide lubricant thereto.

BEARING ARRANGEMENT

A bearing arrangement may include at least one sliding bearing having a polymer coating. The bearing arrangement may bear a camshaft, and at least one of the polymer coating is applied to the camshaft, and the polymer coating is arranged in a bearing ring. An oil trough for collecting oil may be provided on at least one of the bearing ring and a cylinder head which receives the bearing ring. 2. The bearing arrangement according to claim 1 , wherein an oil supply channel is arranged in the cylinder head claim 1 , the channel opening out at a bearing point claim 1 , wherein the bearing point is in sliding contact with the polymer coating applied to the camshaft.3. The bearing arrangement according to claim 1 , wherein the bearing ring has at least one positioning element on its side facing the cylinder head claim 1 , the at least one positioning element engages in a recess formed in the cylinder head thereby positioning the bearing ring relative to the cylinder head.4. The bearing arrangement according to claim 1 , wherein the bearing ring is formed as a sheet metal part.5. The bearing arrangement according to of claim 1 , wherein the polymer coating has at least one of a film-forming and oil-conveying structure.6. The bearing arrangement according to claim 1 , wherein the polymer coating contains at least one of polyimide claim 1 , acrylate claim 1 , polytetrafluoroethylene (PTFE) and epoxy resin.7. The bearing arrangement according to claim 6 , wherein the polymer coating contains at least one of metallic particles and polytetrafluoroethylene particles in a concentration of 1-15% by volume.8. The bearing arrangement according to claim 1 , wherein the camshaft has a raised bearing region in which the at least one sliding bearing with the polymer coating runs.9. (canceled)10. The bearing arrangement according to claim 8 , wherein the raised bearing region comprises an enlarged diameter of the camshaft.11. The bearing arrangement according to claim 3 , wherein at least ...

Oil Separator for Separating Oil from Aerosol in a Combustion Engine

An oil separator separates oil from aerosol in a combustion engine. The oil separator includes a housing having an inlet opening for the aerosol, an impeller which can be rotatably driven about a rotational axis, and which is adapted for generating an aerosol flow along an axial direction of the impeller and arranged in the housing, and an impact wall which is designed in such a way that a projection of the impeller oriented axially and downstream in the air flow impinges on the impact wall. At least one part of a projection of the impeller oriented axially and downstream in the air flow impinges on the inlet opening.

Bucket tappet and method for producing same

The invention relates to a bucket tappet for an internal combustion engine, having a tappet housing with a hollow cylindrical bucket skirt and a bucket base which closes one side of the bucket skirt and on which the bucket skirt is formed by cold forming a steel blank without cutting. The outside of the bucket base is used as a contact surface for an internal combustion engine cam which transfer a stroke movement to the bucket tappet, and the outside of the bucket skirt is used as a contact surface for an internal combustion engine guide bore which supports the bucket tappet in the stroke direction. The aim of the invention is to develop a bucket tappet of the aforementioned type and a method for producing same with respect to reduced production costs. This is achieved in that the unmachined and uncoated cam contact surface of the bucket base is machined using a brushing tool and no additional mechanical machining of the cam contact surface is carried out.

CONTINUOUS VARIABLE VALVE LIFT APPARATUS AND ENGINE PROVIDED WITH THE SAME

A continuously variable valve lift apparatus may include a camshaft, a cam portion on which a cam is formed and into which the camshaft is inserted, a slider housing into which the cam portion is rotatably inserted and disposed to be rotatable around a pivot shaft, a control portion configured to selectively rotate the slider housing around the pivot shaft, a rotation deliverer configured to transmit rotation of the camshaft to the cam portion, an output portion rotatable around the pivot shaft and on which a valve shoe is formed, and a valve device configured to be driven by the valve shoe. 1. A continuously variable valve lift apparatus comprising:a camshaft;a cam portion on which a cam is formed and into which the camshaft is inserted;a slider housing into which the cam portion is rotatably inserted and disposed to be rotatable around a pivot shaft;a control portion configured to selectively rotate the slider housing around the pivot shaft;a rotation deliverer configured to transmit rotation of the camshaft to the cam portion;an output portion rotatable around the pivot shaft and on which a valve shoe is formed; anda valve device configured to be driven by the valve shoe.2. The continuously variable valve lift apparatus of claim 1 , wherein the rotation deliverer comprises:an inner plate connected to the camshaft and from which a control pin protrudes; andan outer plate on which a control slot where the control pin movable therein is formed, and configured to transmit rotation of the inner plate to the cam portion.3. The continuously variable valve lift apparatus of claim 2 , wherein the rotation deliverer further comprises a rotation housing formed to the cam portion claim 2 , andwherein the outer plate is connected to the rotation housing.4. The continuously variable valve lift apparatus of claim 2 , wherein:a stopper protrudes from the inner plate; anda stopper slot is formed to the outer plate for limiting movement of the stopper.5. The continuously variable ...

ENGINE VALVE SYSTEM HAVING ROCKER ARM ASSEMBLY WITH ROLLER LOCK FOR SELECTIVE ENGINE VALVE DEACTIVATION

A rocker arm assembly for an engine valve system includes a rocker arm for actuating an engine valve, a stop, a biaser, and a swing lock attached to one of the valve end or the cam end of the rocker arm and defining a pivot axis, and including an actuating surface. The actuating surface is rotatable between a stopped orientation and an idled orientation, and the biaser biases the swing lock towards the stopped orientation where the swing lock contacts the stop and traps the swing lock between the rocker arm and one of an engine valve or a cam. The swing lock is movable in opposition to a bias of the biaser toward the idled orientation to deactivate the engine valve. 1. A rocker arm assembly for an engine valve system comprising:a rocker arm for actuating an engine valve and including a valve end, a cam end, and a shaft bore defining a bore center axis and formed between the valve end and the cam end to receive a rocker shaft supporting the rocker arm for reciprocation;a stop;a swing lock attached to one of the valve end or the cam end of the rocker arm, and including a holder defining a pivot axis oriented parallel to the bore center axis, and an actuating surface;a biaser;the actuating surface is supported by the holder at a location spaced from the pivot axis and rotatable with the holder between a stopped orientation about the pivot axis and an idled orientation about the pivot axis; andthe biaser biases the swing lock toward the stopped orientation, such that the swing lock is in contact with the stop to trap the swing lock between the rocker arm and one of an engine valve or a cam, and the swing lock is movable in opposition to a bias of the biaser toward the idled orientation.2. The assembly of wherein the holder includes a fork and the swing lock includes a roller defining a roller axis and having the actuating surface formed thereon.3. The assembly of wherein:a fixed plane is defined by the bore center axis and the pivot axis and contains each of the bore ...

VALVE TIMING ADJUSTMENT DEVICE

A valve timing adjustment device includes a drive-side rotating body that rotates in conjunction with a crankshaft, a driven-side rotating body that rotates integrally with a camshaft, a speed reduction mechanism that transmits rotation while allowing relative rotation between the drive-side rotating body and the driven-side rotating body. The driven-side rotating body includes a fastening portion fastened to the end portion of the camshaft by a center bolt, a bearing portion that is located radially outward of the fastening portion and that axially supports the drive-side rotating body, and a fitting outer surface that is fitted to a regulating member on a side where an outer diameter of an axial contact surface with the other member on one side and the other side in the axial direction of the driven-side rotating body is large. 1. A valve timing adjustment device that is provided in a torque transmission path from a crankshaft of an internal combustion engine to a camshaft thereof and adjusts a valve timing of a valve operating to open and close the camshaft , comprising:a drive-side rotating body configured to rotate in conjunction with the crankshaft;a driven-side rotating body configured to rotate integrally with the camshaft;a speed reduction mechanism configured to transmit rotation while allowing relative rotation between the drive-side rotating body and the driven-side rotating body; wherein a fastening portion fastened to an end portion of the camshaft by a bolt,', 'a bearing portion that is located radially outward of the fastening portion and that axially supports the drive-side rotating body, and', 'a fitting outer surface that is fitted to a regulating member on a side where an outer diameter of an axial contact surface with the other member on one side and the other side in the axial direction of the driven-side rotating body is large., 'the driven-side rotating body includes'}2. The valve timing adjustment device according to claim 1 , whereinthe ...

ROCKER ARM WITH INBOARD LOST MOTION SPRING OVER VALVE

A rocker arm can comprise a first outer arm and a second outer arm joined by a pivot body. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm. A first spring prop is on the inner arm assembly distal from the latch arm. An axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. A spring is biased against the first outer arm and against the first spring prop. The first spring prop can comprise a hooked end. Or, the first spring prop can extend laterally out from the rocker arm and parallel to the axle. The spring can comprise a one-piece spring comprising first and second coil springs connected by a lateral connector. Or, two separate torsion springs can comprising tangential spring ends extending at approximately 90 degrees. 125-. (canceled)26. A rocker arm , comprising:a first outer arm and a second outer arm joined by a pivot body on a first end of the rocker arm and comprising a valve seat on a second end of the rocker arm;a latch mechanism configured to actuate from the pivot body;an inner arm assembly between the first outer arm and the second outer arm;an axle mounted on the second end of the rocker arm, the axle forming a pivot location for the inner arm assembly relative to the first outer arm and the second outer arm; anda lost motion spring around the axle, the lost motion spring biased against the inner arm assembly and biased against the second end.27. The rocker arm of claim 26 , further comprising a spring prop within the inner arm assembly claim 26 , wherein the lost motion spring is biased against the spring prop.28. The rocker arm of claim 27 , wherein the spring prop is biased against the valve seat.29. The rocker arm of claim 27 , wherein the inner arm assembly comprises a first inner arm and a second inner arm claim 27 , and wherein the spring prop extends from the first inner arm.30. The rocker arm of claim 27 , wherein the inner arm assembly comprises a ...

MODULAR SYSTEM FOR CHECKING A VALVE SEAT AND A VALVE GUIDE IN CYLINDER HEADS OF INTERNAL COMBUSTION ENGINES

A modular system () for checking a valve seat and its associated valve guide in cylinder heads of internal combustion engines comprises a guide and support assembly (), movable in three directions, which carries one or more electronic gauges () and a precentering pin () to guide the insertion of the gauge in the valve seat and its associated valve guide, and a tilting table () for loading and locating a cylinder head (). Thanks to the particular structure of a support mechanism () connected to the guide and support assembly, the gauge is able to self-position on the valve seat to be checked and to disengage in a checking condition from the guide and support assembly at least in one of the three directions. The tilting table can be adjusted depending on the dimensions and layout of the cylinder head to be checked and includes a swing system () to set the tilt of the table as a function of the inclination of the valve seat and its associated valve guide to be checked. 1. A modular system for checking a valve seat and a valve guide in cylinder heads of internal combustion engines , the system including:a support frame,one or more electronic gauges with a nosepiece for checking dimensional and geometric features of the valve seat and the valve guide,a guide and support assembly movably coupled to the support frame with three degrees of freedom and carrying one or more electronic gauges, the guide and support assembly being adapted to position said one gauge over the valve seat to be checked, and to bring the gauge to cooperate with the valve seat along a vertical direction,a precentering pin connected to said guide and support assembly adapted to guide the insertion of the gauge in the valve seat and the valve guide by entering a valve seat and a valve guide close to the valve seat and the valve guide to be checked,wherein said guide and support assembly includes resting surfaces and matching surfaces integral with said one gauge which rest on said resting surfaces, in ...

Switching rocker arm

A rocker arm assembly includes an outer arm having first and second low lift lobe contacting surfaces, an inner arm, and a latch assembly. The inner arm includes first and second opposed sidewalls extending between a first end and a second end, and a high lift lobe contacting surface disposed between the first and second opposed sidewalls. The first end is pivotably secured to the outer arm and operably associated with an engine valve, and the second end is operably associated with a lash adjuster and defining a latch bore. The latch assembly is movable between a first configuration and a second configuration. In the first configuration, the latch assembly engages the outer arm such that the outer arm rotates with the inner arm, and in the second configuration, the latch assembly disengages the outer arm such that the outer arm rotates independently from the inner arm.

COIL SPRING

In the coil spring of the present invention, a helical space defined by a space between coils has a first end region whose space is increased as it extends towards the other side in the axial direction from a first reference point where the space is zero, a reference region whose space is set at a reference value L (L>0), and a second end region whose space becomes narrow as it extends toward the other side in the axial direction and zero at a second reference point. The first end region has a first end outer part and a first end inner end. In a case where a pitch angle of the space between coils that causes the displacement of the space between coils per turn of the helical space to be L is a reference pitch angle Pa, the pitch angle in the first end outer part is set at Pa while the pitch angle in the first end inner part is set at Pb (Pb>Pa). 1. A coil spring having a spring wire formed into a helical shape axially extending from one side to the other side , wherein ,a helical space defined by a space between coils that are adjacent to each other in an axial direction has a first end region wherein the space between coils in the natural length state is increased from a first reference point, where the space between coils in the natural length state is zero, circumferentially toward the other side in the axial direction along the helical shape, a reference region located closer to the other side in the axial direction than the first end region is, wherein the space between coils in the natural length state is at a reference value L (L>0), and a second end region located closer to the other side in the axial direction than the reference region is, wherein the space between coils is reduced circumferentially toward the other side in the axial direction along the helical shape and the space between coils in the natural state is zero at a second reference point;the first end region has a first end outer part that extends from the first reference point toward the other ...

Valve actuation system

A valve actuation system is disclosed for use with an internal combustion engine. The valve actuation system may have a rocker shaft, a rocker arm pivotally mounted on the rocker shaft, at least one cam follower and a pushrod connecting the at least one cam follower to the rocker arm. The valve actuation system may also have a plurality of gas exchange valves, and a bridge connecting the rocker arm to the valves. The valve actuation system may further have at least one spring disposed around each of the valves and configured to bias each of the valves toward closed positions, and a rotocoil configured to rotatably connect the at least one spring to each of the valves. The rotocoil may have an internal chamfer at a bridge end with an angle of about 26-28°. The at least one spring may have an assembled load of about 750-850 N.

SPOOL SHUTTLE CROSSOVER VALVE AND COMBUSTION CHAMBER IN SPLIT-CYCLE ENGINE

A split-cycle engine includes: a first cylinder housing a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke; a second cylinder housing a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; and a valve chamber housing a valve, the valve comprising an internal chamber that selectively fluidly couples to the first and second cylinders, wherein the valve and internal chamber move within the valve chamber and relative to the first and second cylinders. 142-. (canceled)43. A split-cycle engine comprising:a first housing comprising a first piston, wherein the first piston performs an intake stroke and a compression stroke, but does not perform an exhaust stroke;a second housing comprising a second piston, wherein the second piston performs an expansion stroke and an exhaust stroke, but does not perform an intake stroke; anda valve housing comprising a valve chamber, wherein the valve chamber moves within the valve housing to selectively fluidly couple the valve chamber to the first and second housings.44. The engine of claim 43 , wherein claim 43 , during movement of the valve chamber claim 43 , the valve chamber fluidly couples with the first housing and fluidly couples with the second housing separately.45. The engine of claim 43 , wherein claim 43 , during movement of the valve chamber claim 43 , the valve chamber fluidly couples with the first housing and fluidly couples with the second housing simultaneously.46. The engine of claim 45 , wherein the valve chamber comprises a maximum velocity and a minimum acceleration within 15 crankshaft degrees of when the valve chamber is fluidly coupled to the first and second housings simultaneously.47. The engine of claim 46 , wherein the valve chamber comprises a maximum velocity and a minimum acceleration when the valve chamber is fluidly coupled to the first and second ...

VALVE BRIDGE FOR VALVE SYSTEMS

A valve bridge for a valve system of an engine includes one or more valves and a valve rotator coupled to the valves. The valve bridge includes one or more end portions, a seat formed at the one or more end portions to receive the one or more valves, and an extension portion that extends outwardly from the one or more end portions. The extension portion defines a cavity configured to accommodate the valve rotator, and guide the valve bridge with the valve rotator during each opening and closing of the one or more valves relative to the engine. 1. A valve bridge for a valve system of an engine , the valve system including one or more valves and a valve rotator coupled to the one or more valves , the valve bridge comprising:one or more end portions;a seat formed at the one or more end portions to receive the one or more valves; and 'wherein the cavity is configured to accommodate the valve rotator, and guide the valve bridge with the valve rotator during each opening and closing of the one or more valves relative to the engine.', 'an extension portion extending outwardly from the one or more end portions and defining a cavity therein,'}2. The valve system of claim 1 , wherein the seat includes a recess formed at the one or more end portions.3. The valve bridge of claim 2 , wherein the cavity and the recess define a stepped configuration and together form a guide structure to guide the valve bridge with the one or more valves.4. The valve bridge of claim 2 , wherein the recess and the cavity are co-axial.5. The valve bridge of claim 2 , wherein the recess and the cavity are circular shaped claim 2 , the recess including a first diameter and the cavity including a second diameter claim 2 , the first diameter being lesser than the second diameter.6. The valve bridge of claim 1 , wherein the valve bridge includes a tappet head claim 1 , a first arm and a second arm radially extending away from the tappet head to respectively define a first end portion and a second end ...

BUTTON FOR ROCKER ARM ASSEMBLY

The present disclosure provides a button for a rocker arm assembly. The button includes a head portion. The button includes a shank extending from the head portion along a longitudinal axis. The button further includes a base portion extending from the shank. The base portion has a bottom surface, wherein the bottom surface has a substantially concave profile. 1. A button for a rocker arm assembly , the button comprising:a head portion;a shank extending from the head portion along a longitudinal axis; anda base portion extending from the shank, the base portion having a bottom surface, wherein the bottom surface has a substantially concave profile.2. The button of claim 1 , wherein an outer diameter of the base portion lies in the range of 5 mm to 100 mm.3. The button of claim 1 , wherein a ratio of a radius of curvature of the concave profile to the outer diameter of the base portion lies in a range of 1:1 to 200:1.4. The button of claim 1 , wherein a ratio of a radius of curvature of the concave profile to the outer diameter of the base portion is 30:1.5. The button of further comprising:at least one fluid channel, wherein the at least one fluid channel extending from the head portion to the base portion substantially along the longitudinal axis of the button;a first opening on a head surface; anda second opening on the bottom surface.6. The button of is made of hardened steel.7. A rocker arm assembly comprising:a rocker arm forming an insert bore;an insert disposed within the insert bore; and a head portion;', 'a shank extending from the head portion along a longitudinal axis; and', 'a base portion extending from the shank, the base portion having a bottom surface, wherein the bottom surface has a substantially concave profile., 'a button attached to the insert, the button including8. The rocker arm assembly of claim 7 , wherein an outer diameter of the base portion of the button lies in the range of 5 mm to 100 mm.9. The rocker arm assembly of claim 7 , wherein ...

SYSTEM, METHOD AND TOOLING FOR FLEXIBLE ASSEMBLY OF CYLINDER-HEAD VALVE TRAINS

An assembly method is provided by orienting a cylinder-head at a first orientation. A first plurality of spring caps and a first plurality of retainer keys are installed into the cylinder-head in the first orientation by a first robot. A first plurality of valves is installed into the cylinder-head in the first orientation by a second robot, into engagement with the first plurality of retainer keys. An end effector is provided with an actuator supported upon an adapter plate. A shaft extends from the actuator with a mating surface to engage a spring cap. Porting is provided through the shaft to convey pressurized air upon a plurality of retainer keys within the spring cap. A plurality of gripper fingers extend from the distal end of the shaft to grip a valve spring while retaining a spring cap between the valve spring and the mating surface of the shaft. 19-. (canceled)10. An end effector comprising:an adapter plate;at least one actuator supported upon the adapter plate;at least one shaft extending from the actuator, a mating surface provided on a distal end of the shaft to engage a spring cap, and porting provided through the shaft to a central region of the mating surface to convey pressurized air upon a plurality of retainer keys within the spring cap; anda plurality of gripper fingers extending from the distal end of the shaft to grip a valve spring while retaining the spring cap between the valve spring and the mating surface of the shaft.11. The end effector of wherein the shaft is provided with a central cavity; and a pin oriented in the central cavity of the shaft for limited translation relative to the shaft, and', 'a biasing member cooperating with the shaft and the pin to bias the pin into engagement with the plurality of retainer keys within the spring cap., 'wherein the end effector further comprises12. An assembly method comprising:providing a kitted assembly comprising a valve spring, a spring cap upon the valve spring and a plurality of retainer keys ...

Green Compact of a Stator-Cover Unit

A green compact of a stator-cover unit for a camshaft adjuster unit, at least comprising 2. The green compact according to claim 1 , wherein the outer circumferential surface of the cover forms a first transition with the web flanks claim 1 , at least on a first side of the cover facing away from the first end-face side-of the stator claim 1 , and forms a second transition with the inner circumferential surface claim 1 , wherein at least the first transition or the second transition has a radius of at most 0.01 millimeter (mm).3. The green compact according to claim 1 , wherein the shared contact surfaces extend parallel to the axial direction.4. The green compact according to claim 1 , wherein the first partial green compact has outwardly pointing external teeth claim 1 , situated in a radial direction outside the stator wall claim 1 , as a chain wheel.5. The green compact according to claim 1 , wherein at least on a first side of the cover facing away from the first end-face side of the stator claim 1 , the cover has at least one depression that is spaced apart from the first transition and the second transition.6. The green compact according to claim 1 , wherein the stator and the cover have different densities.7. The green compact according to claim 1 , wherein the first sinter material and the second sinter material are identical to one another.82. A stator cover unit () comprising a sintered green compact according to claim 1 , wherein the outer circumferential surface of the cover forms a first transition with the web flanks claim 1 , at least on a first side of the cover facing away from the first end-face side of the stator claim 1 , and forms a second transition with the inner circumferential surface claim 1 , wherein at least the first transition or the second transition directly after the sintering has a radius of at most 0.01 millimeter (mm).9. The stator cover unit according to claim 8 , wherein directly after the sintering claim 8 , at least on a ...

ELECTROMAGNETIC VALVE APPARATUS WITH NONLINEAR SPRING

An electromagnetic valve apparatus with nonlinear springs for variable valve timing in an internal combustion engine. The apparatus includes a valve, floating spring assembly, translational cam, and motor. The cam and spring serve to minimize lash and valve stem bending forces. During opening and closing of the valve, spring potential energy is converted into valve kinetic energy and then back into potential energy at the end of the motion. The potential energy is then available for the next opening/closing event. The motor initiates motion, replaces friction and vibration losses, and terminates motion. However, the motor supplies minimal energy as the valve opens and closes, and vice-versa, naturally due to combined effects of system inertia and the nonlinear spring. In addition to valve control, the apparatus may be applied to fuel injectors, or any reciprocating linear or rotary mechanism where electronic control is used. 1. An electromagnetic valve apparatus , said apparatus comprising:a valve stem having a longitudinal axis, said valve stem including a valve located on an end thereof;a motor providing displacement of said valve stem;a spring mechanism symmetrically providing force for translation to said valve, said spring mechanism being pivotably attached to a stationary section, said force providing positive contact pressure to said valve stem between a fully open position of said valve and a fully closed position of said valve;a first reduced force point corresponding to said fully open position and at which said force acts upon said valve stem to maintain said fully open position; anda second reduced force point corresponding to said closed position and at which said force acts upon said valve stem to maintain said fully closed position.2. The apparatus as claimed in claim 1 , further including a translational cam located between said motor and said valve claim 1 , at least two followers movably engaging said translational cam claim 1 , and said force ...

SOCKET MODULE OF COMPRESSION RELEASE TYPE ENGINE BRAKE AND OPERATING METHOD OF ENGINE BRAKE USING THEREOF

A compression release type of engine brake socket module is provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve of an engine. In particular the socket module incudes: a housing which includes an inlet through which brake oil is introduced, a brake piston mounting portion, and a reset member mounting portion communicating with the brake piston mounting portion; a brake piston that is provided to be movable in the brake piston mounting portion; a stopper disposed on one side of an inner space of the housing to limit a moving position of the brake piston; and a reset member that is provided in the reset member mounting portion, and that discharges the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head. 1. A compression-release engine brake socket module provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve , the compression-release engine brake socket module comprising: an inlet through which brake oil is introduced,', 'a brake piston mounting portion, and', 'a reset member mounting portion configured to communicate with the brake piston mounting portion;, 'a housing includinga brake piston configured to move in the brake piston mounting portion;a stopper disposed on one side of an inner space of the housing and configured to limit a moving position of the brake piston; anda reset member provided in the reset member mounting portion, and configured to discharge the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head.2. The compression-release engine brake socket module of claim 1 , further comprisingat least one upper protrusion and a lower protrusion formed on an exterior surface of each of an upper portion and a lower portion of the brake piston so that movement of the brake piston is restricted by the stopper.3. The compression- ...

Self-resetting single-valve hydraulic drive device and method based on primary and secondary pistons for push rod engine

A self-resetting single-valve hydraulic drive device and method based on primary and secondary pistons for a push rod engine is provided. A primary driving piston and a secondary driving piston are respectively provided on a rocker arm body and a valve bridge body. The secondary driving piston is connected to an exhaust valve. A driving oil passage connects the primary driving piston, the secondary driving piston and a drive control valve. When the drive control valve opens the driving oil passage, the primary driving piston and the secondary driving piston realize a hydraulic linkage. During a drive lift, the rocker arm body and the valve bridge body do not move, and the secondary driving piston opens the exhaust valve. In the beginning of a positive-power lift, a primary piston body oil passage and a secondary piston oil passage are closed, and the secondary driving piston is automatically reset.

GAS EXCHANGE VALVE ACTUATOR FOR AXIAL DISPLACEMENT OF A GAS EXCHANGE VALVE OF A COMBUSTION ENGINE

An actuator for axial displacement of a gas exchange valve of a combustion engine is configured to be connected to a pressure fluid source and a pressure fluid sink, respectively, and to be driven by a gaseous pressure fluid and includes an actuator piston including an actuator piston disc and an actuator piston rod projecting therefrom in the axial direction, a cylinder volume, the disc separating the cylinder volume into a first part and a second part and being displaceable back and forth in the axial direction in the cylinder volume between an inactive position and an active position, the first part being configured for controllable fluid communication with the pressure fluid source and the pressure fluid sink, respectively, and a hydraulic circuit includes a chamber, the free end of the rod being arranged therein, wherein the rod is displaceable back and forth in the axial direction in a channel. 31612. The gas exchange valve actuator according to claim 2 , wherein the inlet valve body () is biased by means of a spring in a direction closing the inlet channel ().4221417. The gas exchange valve actuator according to claim 2 , wherein the ventilation groove () is connected to the outlet channel () downstream the outlet valve body ().51820182118. The gas exchange valve actuator according to claim 2 , wherein the hydraulic circuit comprises said chamber () claim 2 , a check valve () configured to admit a flow of hydraulic liquid to the chamber () and a hydraulic valve () configured to control a flow of hydraulic liquid from the chamber ().621. The gas exchange valve actuator according to claim 5 , wherein the hydraulic valve () comprises a hydraulic valve body that is displaceable back and forth between a closed position and an open position claim 5 , the hydraulic valve body being biased by means of a spring in the direction away from the closed position thereof.716. The gas exchange valve actuator according to claim 6 , wherein the inlet valve body () and the ...

VARIABLE VALVE DURATION/VARIABLE VALVE LIFT SYSTEM AND ENGINE PROVIDED WITH THE SAME

A variable valve duration/variable valve lift system may include a camshaft, a first cam portion including a first cam, into which the camshaft is inserted and of which a relative phase angle of the first cam with respect to the camshaft is variable, an inner bracket transmitting rotation of the camshaft to the first cam portion, a slider housing into which the inner bracket is rotatably inserted, a first rocker arm having a first end contacting the first cam, a rocker shaft to which the first rocker arm is rotatably connected, a solenoid valve configured to selectively supply hydraulic pressure, a position controller configured to selectively change a position of the slider housing, a first bridge connected to a second end of the first rocker arm and to which a first valve is connected, and a valve lift disposed within the first bridge. 1. A variable valve duration/variable valve lift system , comprising:a camshaft;a first cam portion including a first cam, into which the camshaft is inserted and of which a relative phase angle of the first cam with respect to the camshaft is variable;an inner bracket transmitting rotation of the camshaft to the first cam portion;a slider housing into which the inner bracket is rotatably inserted;a first rocker arm having a first end contacting the first cam;a rocker shaft to which the first rocker arm is rotatably connected;a solenoid valve configured to selectively supply hydraulic pressure;a position controller configured to selectively change a position of the slider housing according to the selective supplying of the hydraulic pressure from the solenoid valve;a first bridge connected to a second end of the first rocker arm and to which a first valve is connected; anda valve lift disposed within the first bridge for changing valve lift of the first valve according to supplying of the hydraulic pressure from the solenoid valve.2. The variable valve duration/variable valve lift system of claim 1 , whereina control hydraulic line ...

ROTATING ACTUATOR SYSTEM FOR CONTROLLING VALVE ACTUATION IN AN INTERNAL COMBUSTION ENGINE

A system for controlling actuation of an engine valve comprises a pivot and a torsion spring having first and second legs operatively connected to the pivot. A lever arm is adjustably affixed to and extending away from the pivot, and is further rotatable about a pivot axis of the pivot between a retracted position and an extended position and vice versa relative to a motion conveying component. Furthermore, a housing is provided having a pivot bore formed therein with the pivot rotatably disposed in the pivot bore. The housing further comprises a first and second openings intersecting with the pivot bore such that the first and second legs extend out of the first opening and the lever arm extends out of the second opening. When a first force is applied by the motion conveying component to the lever arm, such first force maintains the lever arm in the extended position. 1. In an internal combustion engine comprising an engine valve and a valve actuation motion source operatively connected to the engine valve by at least one motion conveying component , a system for controlling actuation of the engine valve , the system comprising:a pivot;a torsion spring, having first and second legs, operatively connected to the pivot;a lever arm, adjustably affixed to and extending away from the pivot, rotatable about a pivot axis of the pivot between a retracted position and an extended position and vice versa relative to a motion conveying component of the at least one motion conveying component; anda housing having a pivot bore formed therein and the pivot rotatably disposed in the pivot bore, the housing further comprising a first opening intersecting with the pivot bore and a second opening intersecting with the pivot bore such that the first and second legs extend out of the first opening and the lever arm extends out of the second opening,wherein, in the retracted position, the lever arm has substantially no effect on actuation of the engine valve and, in the extended ...

TORSION ASSEMBLY FOR CONTROLLABLY PROVIDING TORQUE TO A CAMSHAFT

A torsion assembly for providing controllable torsion to a camshaft, including: a spring assembly including a first spring; and, a contact element arranged to engage at least one lobe for the camshaft. For a locked mode: the contact element is arranged to be displaced by the at least one cam lobe; the contact element is arranged to compress the first spring; and the first spring is arranged to impart a first torque to the camshaft via the contact element. For an unlocked mode, the contact element is arranged to be displaced by the at least one cam lobe and the contact element is arranged to impart a second torque, less than the first torque, to the cam shaft via the contact element. 1. A torsion assembly for providing controllable torsion to a camshaft , comprising:a spring assembly including a first spring; and, [ the contact element is arranged to be displaced by the at least one cam lobe;', 'the contact element is arranged to compress the first spring; and,', 'the first spring is arranged to impart a first torque to the camshaft via the contact element; and,, 'for a locked mode, the contact element is arranged to be displaced by the at least one cam lobe; and,', 'the contact element is arranged to impart a second torque, less than the first torque, to the cam shaft via the contact element., 'for an unlocked mode], 'a contact element arranged to engage at least one lobe for the camshaft, wherein2. The torsion assembly of claim 1 , further comprising:a lock element including a non-displaceable distal end, wherein: a bearing arranged to contact the at least one camshaft lobe; and,', connected to the bearing;', 'disposed about a shaft; and', a first portion with a first end engaged with the spring assembly; and,', 'a second portion including a second end engaged with the distal end of the lock element, wherein:, 'including], 'an arm, the bearing is arranged to be displaced by the at least one lobe;', 'the arm is arranged to non-rotatably connect to the shaft;', 'the ...

INTERNAL COMBUSTION ENGINE AND VEHICLE

An internal combustion engine includes, as a lost motion spring that urges a rocker arm toward a cam, a compression coil spring supported on a cylinder head. A shaft is located on an inner side of the compression coil spring and extends along a winding axis of the compression coil spring. The internal combustion engine significantly reduces or prevents a decrease in the fuel efficiency and an increase in the size of the variable valve mechanism, while surging is unlikely to occur while running at a high speed, and it is possible to reduce the size or the weight of the rocker arm. 111-. (canceled)12. An internal combustion engine comprising:a cylinder head;a port in the cylinder head;a valve in the cylinder head to open/close the port;a cam shaft rotatably supported on the cylinder head;a cam provided on the cam shaft;a compression coil spring supported on the cylinder head;a rocker arm including a first arm and a second arm, the first arm including a supported portion pivotally supported on the cylinder head and an abutting portion that abuts on the valve, the second arm including a contact portion that contacts with the cam and a spring force receiver that receives a force of the compression coil spring, the second arm being pivotally supported on the first arm;a connector that removably connects the first arm and the second arm; anda shaft located on an inner side of the compression coil spring and that extends along a winding axis of the compression coil spring.13. The internal combustion engine according to claim 12 , whereinthe shaft includes a first shaft end portion, and a second shaft end portion located on a side of the second arm relative to the first shaft end portion; andthe internal combustion engine further includes a spring seat that is provided at the first shaft end portion of the shaft and receives the compression coil spring.14. The internal combustion engine according to claim 13 , whereinthe compression coil spring includes a first end portion, ...

CAMSHAFT PHASER

A camshaft phaser includes an input member; an output member defining an advance chamber and a retard chamber with the input member; a valve spool moveable between an advance position and a retard position. The valve spool has a phasing volume and a venting volume defined therein such that the phasing volume is fluidly segregated from the venting volume. The valve spool also has a passage providing fluid communication between the phasing volume and the exterior of the valve spool. Oil is supplied to the advance chamber from the phasing volume through the passage in order to retard the timing of a camshaft and oil is supplied to the retard chamber from the phasing volume through the passage in order to advance the timing of the camshaft. 1. A camshaft phaser for use with an internal combustion engine for controllably varying the phase relationship between a crankshaft and a camshaft in said internal combustion engine , said camshaft phaser comprising:an input member connectable to said crankshaft of said internal combustion engine to provide a fixed ratio of rotation between said input member and said crankshaft;an output member connectable to said camshaft of said internal combustion engine and defining an advance chamber and a retard chamber with said input member; anda valve spool moveable between an advance position and a retard position, said valve spool having a valve spool bore with a phasing volume and a venting volume defined within said valve spool bore such that said phasing volume is fluidly segregated from said venting volume, and said valve spool also having a spool phasing passage providing fluid communication between said phasing volume and the exterior of said valve spool;wherein oil is supplied to said advance chamber from said phasing volume through said spool phasing passage in order to retard the timing of said camshaft relative to said crankshaft; andwherein oil is supplied to said retard chamber from said phasing volume through said spool ...

ENGINE WITH EXTERNAL CAM LUBRICATION

An engine, such as a variable displacement engine, has a camshaft retainer. The camshaft retainer has a cap adapted to cooperate with a carrier to support first and second overhead camshafts for rotation. The retainer cap forms a housing for a camshaft journal bearing. The retainer cap also forms a retainer land defining an open channel adapted to provide a jet of lubricating fluid from the bearing housing to externally lubricate a cam. The retainer land is adapted to mate with a sealing land of the carrier to enclose the open channel. 1. A variable displacement engine comprising:an engine block and head defining first and second cylinders, the second cylinder adapted to be selectively deactivated during engine operation;an intake overhead camshaft having an intake pair of cams associated with intake valves of the second cylinder;an exhaust overhead camshaft having an exhaust pair of cams associated with exhaust valves of the second cylinder; anda camshaft carrier plate and a retainer cap cooperating to support camshaft journal bearings of the intake and exhaust camshafts, the retainer cap defining a channel having an inlet in fluid communication with a lubrication passageway associated with one of the bearings, the channel having a pair of outlets spaced apart from outer surfaces of the exhaust pair of cams for external lubrication thereof.2. The engine of wherein the channel in the retainer cap is an open channel claim 1 , and wherein a sealing land of the carrier plate encloses the open channel.3. The engine of wherein cams associated with valves of the first cylinder are internally lubricated.4. The engine of wherein the lubrication passageway of the bearing is associated with the exhaust camshaft.5. The engine of wherein the inlet to the channel is generally perpendicular to a rotational axis of the exhaust camshaft.6. The engine of wherein the pair of outlets is generally perpendicular to the rotational axis of the exhaust camshaft.7. The engine of wherein the ...

VARABLY OPERATED VALVE SYSTEM FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE AND CONTROL APPARATUS FOR VARIABLY OPERATED VALVE SYSTEM

In a variably operated valve system for a multi-cylinder internal combustion engine and a control apparatus for the variably operated valve system, a first valve stop mechanism is configured to switch between a valve operation state in which one of a pair of intake valves from among the pair of intake valves of a part of a plurality of cylinders is operated to be open or closed and a valve stopped state in which the valve open or closure operation of the one of the intake valves is stopped, a second valve stop mechanism is configured to switch between the valve operation state in which the other of the pair of intake valves from among the pair of intake valves of the part of the cylinders is operated to be open or closed and the valve stopped state in which the valve open or closure operation is stopped. 1. A variably operated valve system for a multi-cylinder internal combustion engine , the internal combustion engine having a plurality of cylinders , comprising:a pair of intake valves and a pair of or a single exhaust valve disposed for each of the cylinders;a first valve stop mechanism configured to switch between a valve operation state in which one of the pair of intake valves from among the pair of intake valves of a part of the cylinders is operated to be open or closed and a valve stopped state in which the valve open-or-closure operation of the one of the pair of intake valves is stopped; anda second valve stop mechanism configured to switch between the valve operation state in which the other of the pair of intake valves from among the pair of intake valves of the part of the cylinders is operated to be open or closed and the valve stopped state in which the valve open-or-closure operation is stopped, wherein the first valve stop mechanism is configured to be in the valve operation state when a switching energy is supplied and to be in the valve stopped state when the supply of the switching energy is stopped and the second valve stop mechanism is ...

LOCKING CLEARANCE SETTING DEVICE FOR CAMSHAFT PHASER

A camshaft phaser including a locking clearance setting pin is provided. The camshaft phaser includes a stator including a first plurality of pin holes extending axially in at least one of the radially inwardly extending lobes arranged along an arcuate path. A locking cover engages against a first axial end face of the stator and includes a locking pin bore and a second plurality of pin holes arranged along the arcuate path and angularly spaced apart from one another by a different angular spacing than the first plurality of pin holes. A pin extends through a respective one of the first plurality of pin holes and a corresponding one of the second plurality of pin holes, such that a location of the pin sets an angular adjustment of the locking pin bore relative to the stator. 1. A camshaft phaser comprising:a stator including an outer circumferential wall with radially inwardly extending lobes circumferentially spaced apart from each other, at least one first bolt hole extending axially through at least one of the radially inwardly extending lobes, and a first plurality of pin holes extending axially in at least one of the radially inwardly extending lobes arranged along an arcuate path;a rotor arranged within the stator including radially outwardly extending vanes, each of the vanes being arranged between an adjacent pair of the radially inwardly extending lobes of the stator to define an advance chamber and a retard chamber on opposite sides of each of the vanes between the stator and the rotor;a locking cover engaged against a first axial end face of the stator, the locking cover including a locking pin bore, at least one second bolt hole, and a second plurality of pin holes arranged along the arcuate path and spaced apart from one another by a different angular spacing than the first plurality of pin holes;a sealing cover engaged against a second axial end face of the stator, the sealing cover including at least one third bolt hole;at least one bolt extending ...

SHEET METAL LOCKING COVER FOR A CAM PHASER

A cam phaser includes a stator, a rotor positioned in the stator, a cover plate positioned on a first side of the stator, a locking cover positioned on a second side of the stator, a locking pin assembly configured to selectively lock the rotor in a position relative to the stator, a plurality of aligned first openings which extend through the stator, the cover plate, and the locking cover, a plurality of fasteners respectively inserted in the plurality of aligned first openings, and a plurality of aligned central openings forming a throughbore. The locking cover has a body made from sheet metal having a first axial side, a second axial side, a plurality of the first openings extending from the first axial side to the second axial aide, and a second opening extending from the first axial side to the second axial side. The body has a web portion and a plurality of reinforcing portions which are thicker than the web portion. 1. A cam phaser , comprisinga stator;a rotor positioned in the stator;a cover plate positioned on a first side of the stator;a locking cover positioned on a second side of the stator;a locking pin assembly configured to selectively lock the rotor in a position relative to the stator;a plurality of aligned first openings which extend through the stator, the cover plate, and the locking cover;a plurality of fasteners respectively inserted in the plurality of aligned first openings; anda plurality of aligned central openings forming a throughbore,wherein the locking cover includes a body made of sheet metal having a first axial side, a second axial side, a plurality of the first openings extending from the first axial side to the second axial aide, and a second opening extending from the first axial side to the second axial side, andwherein the body includes a web portion and a plurality of reinforcing portions which are thicker than the web portion.2. The cam phaser of claim 1 , wherein the reinforcing portions include a rim which extends around a ...

VARIABLE VALVE DEVICE FOR INTERNAL COMBUSTION ENGINES AND VALVE TIMING CONTROL DEVICE

A variable valve device for an internal combustion engine for varying operating characteristics of engine valves by changing a relative rotational phase of a camshaft to a timing sprocket has an electric motor that rotates the camshaft relatively to the timing sprocket, a cover member provided to cover a front end section of the electric motor, and an angle sensor that detects a rotational angle position of a motor output shaft. The angle sensor includes a detected unit provided inside of a top end section of the motor output shaft and a detecting unit provided on the cover member so as to be opposed to the detected unit through a minute clearance. A metal disk-shaped reinforcing plate is molded and fixed inside of a cover main body of the cover member mainly formed of a synthetic resin material, thus enhancing the entire rigidity of the cover main body. 2. A variable valve device for an internal combustion engine as claimed in claim 1 , wherein:the deformation suppression member is made of a material having a less linear expansion coefficient than the synthetic resin material forming the cover member.3. A variable valve device for an internal combustion engine as claimed in claim 2 , wherein:the deformation suppression member is made of a metal material.4. A variable valve device for an internal combustion engine as claimed in claim 1 , wherein:the rotational angle detection mechanism comprises an electromagnetic induction angle sensor;the detecting unit is arranged to be opposite to the motor output shaft with the deformation suppression member sandwiched between them; andthe deformation suppression member has a through hole formed at a position of the deformation suppression member conformable to the detecting unit.6. A valve timing control device for an internal combustion engine as claimed in claim 5 , wherein:the reinforcing plate is made of a material having a less linear expansion coefficient and a higher elastic modulus than the synthetic resin material of ...

MULTI-POSITION CAMSHAFT PHASER WITH TWO ONE-WAY CLUTCHES

A camshaft phaser, including: a gear to receive torque; a housing non-rotatably connected to the gear; and a phase adjustment assembly. The phase adjustment assembly includes: first and second frusto-conical shaped surfaces arranged to non-rotatably connect to a camshaft; third and fourth frusto-conical shaped surfaces; and a displacement assembly. The displacement assembly is arranged to: for an advance mode, displace the first frusto-conical surface in the first axial direction to non-rotatably connect the first and third frusto-conical surfaces and so that the second frusto-conical surface is rotatable with respect to the fourth frusto-conical surface in a first circumferential direction; and for a retard mode, displace the second frusto-conical surface in the second axial direction to non-rotatably connect the second and fourth frusto-conical surfaces and so that the first frusto-conical surface is rotatable with respect to the third frusto-conical surface in a second circumferential direction, opposite the first circumferential direction. 1. A camshaft phaser , comprising:a gear arranged to receive torque from an engine;a housing non-rotatably connected to the gear; and, [ tapering radially inward in first and second opposite axial directions, respectively; and,', 'arranged to non-rotatably connect to a camshaft;, 'first and second frusto-conical shaped surfaces, 'third and fourth frusto-conical shaped surfaces tapering radially inward in the first and second axial direction, respectively; and,', 'a displacement assembly arranged to:, 'a phase adjustment assembly including to non-rotatably connect the first frusto-conical shaped surface to the third frusto-conical shaped surface; and,', 'so that the second frusto-conical shaped surface is rotatable with respect to the fourth frusto-conical shaped surface in a first circumferential direction; and,, 'for an advance mode, displace the first frusto-conical shaped surface in the first axial direction to non- ...

COMBUSTION ENGINE INTAKE VALVE

An intake valve for a combustion engine is described. The intake valve has a head portion that is designed to improve the flow of air-fuel mixture around the head portion and into the combustion chamber. The head portion has a beveled or rounded edge at the top surface. The angle changes from the underside surface to the top surface are rounded to prevent separation of the air-fuel mixture from the surface of the intake valve. In addition, the underside surface of the head portion has a plurality of helical grooves that induce a circular flow to improve mixing of the air-fuel mixture in the chamber. The helical grooves also improve heat exchange between the air-fuel mixture and the intake valve. 1. An intake valve for a combustion engine , comprising:a head portion having a top surface opposite of an underside surface;a stem portion extending from the underside surface;wherein the top surface has a beveled edge; andwherein the transition from the underside surface to the top surface is rounded.2. The intake valve of claim 1 , wherein the underside surface has a plurality of helical grooves.3. The intake valve of claim 2 , wherein the helical grooves are disposed radially around the stem portion in a counterclockwise direction.4. The intake valve of claim 2 , wherein the helical grooves are disposed radially around the stem portion in a clockwise direction.5. The intake valve of claim 2 , wherein each of the plurality of helical grooves is separated by one of a plurality of helical blades.6. The intake valve of claim 1 , wherein the underside surface comprise a first angled surface and a second angled surface claim 1 , the first angled surface being oriented at a different angle than the second angled surface.7. The intake valve of claim 6 , wherein the transition from the first angled surface to the second angled surface is rounded.8. The intake valve of claim 6 , wherein the beveled edge joins with the second angled surface.9. The intake valve of claim 6 , wherein ...

Module with pre-oriented camshaft

A module may include a receiving element in the form of a bearing frame or a covering hood for arrangement on a cylinder head of an internal combustion engine. The module may further include a camshaft that is rotatably mounted on the receiving element and projects from the receiving element to hold a camshaft wheel. The module can be prefabricated for direct mounting on the cylinder head. In the prefabrication process, the camshaft may be locked against rotation by an externally accessible securing part in an angular position for acting on valves. The securing part may extend through a first aperture in the camshaft wheel and through or into a receptacle of the receiving element. After mounting the module on the cylinder head, the securing part can be removed.

Compression release mechanism and internal combustion engine including the same

A compression release mechanism including a camshaft, a cam provided on the camshaft and protruding outward in a radial direction of the camshaft, a lever, of which a portion is disposed in the camshaft, a support shaft supporting the lever such that the lever is swingable between a first position and a second position relative to the camshaft, and a spring attached to the camshaft, to urge the lever toward the first position. The lever includes a cam portion configured to protrude out from the camshaft with the lever at the first position, a centrifugal weight for moving the lever toward the second position in accordance with rotation of the camshaft, and an abutment portion configured to be in abutment with an inner peripheral surface of the camshaft with the lever at the first position, and be located away from the inner peripheral surface with the lever at the second position.

Two-stroke internal combustion engine

A cam and follower apparatus adapted to translate the force of a piston to turn the shaft of an engine. The cam profile is made of three intersecting circles allowing for one follower to be near top dead center while another follower is near bottom dead center. The surface of the follower is a circle which shares the same center point and radius with the circles of the cam profile. The surface of the follower also closely intersects the axis of the follower preventing the follower from spinning like a roller follower. The follower can therefore spread the force from the piston to a wider area on the cam for longevity. 2. An apparatus according to claim 1 , wherein the cam groove with an endless loop cam profile is made of three interconnected circles to allow the at least one follower to be near top dead center TDC when another one is near bottom dead center BDC.3. An apparatus according to claim 1 , a two-stroke engine using the cam and follower comprising:a) a cylinderb) a movable piston working within said cylinderc) a stationary piston working within the said movable pistond) a piston seat attached to the movable piston, and carrying a followere) a cam component adapted to turn a shaftwherein at least one transfer port is located near bottom dead center (BDC) in relations to the movable piston in the cylinder, wherein at least one exhaust port is located near bottom BDC, wherein at least one transfer port is located on the side and near the movable piston crown, wherein at least one transfer port is located on the side and near bottom of the moving piston skirt, wherein at least one transfer port is located on the sides and near the stationary piston crown, wherein air passages are located within the stationary piston to allow air or charge to enter the rear compression chamber underneath the movable piston via said transfer ports on the stationary piston and the ports near bottom of the movable piston skirt, wherein the ports allowing the charge into the rear ...