УСТРОЙСТВО УПРАВЛЕНИЯ ДЛЯ ДВИГАТЕЛЯ ТРАНСПОРТНОГО СРЕДСТВА

Изобретение относится к транспортным средствам. Устройство управления двигателем транспортного средства с электрическим топливным насосом, датчиком давления топлива, электродвигателем запуска двигателя внутреннего сгорания и электрическим аккумулирующим устройством содержит электронный блок управления, выполненный с возможностью: управления электрическим подающим насосом на основе значения, определенного датчиком давления топлива; управления электродвигателем для запуска двигателя внутреннего сгорания и управления электрическим подающим насосом и электродвигателем. Электрическое аккумулирующее устройство подает электрическую мощность на электродвигатель, отдавая предпочтение перед электрическим подающим насосом, когда первая электрическая мощность меньше определенной пороговой величины. Первая электрическая мощность является мощностью, которую аккумулирующее устройство способно выдать в момент запуска двигателя. Улучшаются характеристики запуска двигателя. 4 з.п. ф-лы, 7 ил.

ИНЖЕКЦИОННЫЙ УЗЕЛ КАМЕРЫ СГОРАНИЯ

Инжекционный узел для использования с узлом камеры сгорания содержит эффузионную пластину с множеством отверстий, втулку, содержащую боковую стенку с передней кромкой и множество кольцевых выступов. Передняя кромка соединена с эффузионной пластиной таким образом, что эффузионная пластина ориентирована под наклоном относительно центральной линии, проходящей через узел камеры сгорания. Каждый из кольцевых выступов соединен с одним из множества отверстий пластины, причем каждый кольцевой выступ проходит назад, во втулку пластины. Узел камеры сгорания содержит множество аппаратов предварительного смешивания и узел головки, содержащий инжекционный узел. Изобретение направлено на продление сроков службы элементов воспламенителя. 2 н. и 8 з.п. ф-лы, 10 ил.

УСТРОЙСТВО ДЛЯ ВПРЫСКИВАНИЯ ТОПЛИВА В КАМЕРУ СГОРАНИЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к двигателестроению, в частности к топливной аппаратуре двигателей внутреннего сгорания. Изобретение направлено на устранение кавитационной эрозии на поверхности держателя обмотки катушки электромагнита в устройстве для впрыскивания топлива. Устройство для впрыскивания топлива в камеру сгорания двигателя внутреннего сгорания содержит форсунку с аксиально перемещаемой форсуночной иглой, нагружаемой в аксиальном направлении для управления ее движением открывания или закрывания с помощью имеющегося в наполненной топливом управляющей камере давления. Давление в управляющей камере управляется посредством по меньшей мере одного магнитного клапана, открывающего или закрывающего впускной или выпускной канал для топлива, в котором катушка магнита взаимодействует с якорем, а с якорем соединен замыкающий элемент клапана, выполненный с возможностью прижатия к седлу клапана. Якорь расположен в камере якоря, в которой заканчивается впускной, соответственно выпускной канал, а катушка ...

Система непосредственного впрыска топлива в дизель

Kraftstoffversorgungsanlage und Verfahren zum Betreiben einer Kraftstoffversorgungsanlage

Kraftstoffversorgungsanlage zum Versorgen einer Brennkraftmaschine mit Kraftstoff, mit einem Kraftstoffvorratsbehälter und mit einer Kraftstoffpumpe mit mindestens einem, mit Hilfe eines antreibbaren Pumpenkörpers veränderbaren Pumpenraum, mit einem in den Pumpenraum führenden Kraftstoffverbindungsanschluß und einem aus dem Pumpenraum führenden Fluidleitungsanschluß, wobei bei angetriebenem Pumpenkörper der Pumpenraum während einer Expansionphase sich vergrößert und während einer Kompressionsphase sich verkleinert und der Kraftstoff infolge des Vergrößerns und Verkleinerns des Pumpenraums über den Kraftstoffverbindungsanschluß in den Pumpenraum und über den Fluidleitungsanschluß aus dem Pumpenraum zumindest indirekt in mindestens einen Brennraum der Brennkraftmaschine geliefert wird, dadurch gekennzeichnet, daß ein in den Pumpenraum mündender Luftzuführungsanschluß (36, 36', 36'') vorgesehen ist, über den zumindest zeitweise während der Expansionsphase Luft in den Pumpenraum (66) gebbar ...

Electromagnetic petroleum fuel injector with insert determining full stroke

The valve seating element (20) is held firmly in the lower end section of an elongated housing (10) and is terminated with a seating (22) and an injector nozzle (23). The valve element (30) is movable axially from a lower position in contact with the seating to an upper position in abutment against a stop (11a). The distance between these positions is set by the thickness of the insert (50) between a surface (12x) of the housing and a surface (20x) of the valve seating element. The ends of this and of the housing are welded together throughout their circumference.

Anordnung und Verfahren zur Nutzung von Bremsenergie in einem Kraftstoffsystem

Anordnung zur Nutzung von Bremsenergie in einem Kraftstoffsystem (1), mit einer Kraftstoffhochdruckpumpe (2), einem Kraftstoffhochdruckspeicher (4), der mit mehreren Druckinjektoren (6) in fluider Verbindung ist, und mit einem Druckspeicher (5), der dem Kraftstoffhochdruckspeicher (4) in eine Strömungsrichtung eines Kraftstoffes im Betrieb vor- und der Kraftstoffhochdruckpumpe (2) nachgeschaltet ist,wobeiein Ventilsystem (10) in einer Leitung (12) vom Druckspeicher (5) zum Kraftstoffhochdruckspeicher (4) vorgesehen ist, damit der Kraftstoffhochdruckspeicher (4) entsprechend bedarfsgerecht aus dem Druckspeicher (5) versorgbar ist,wobei ein Bypass (14) die Leitung (12) mit einer Tankleitung (15) aus dem Tank (8) verbindet und wobei das Ventilsystem (10) ein Ventil (11), das in der Leitung (12) vom Druckspeicher (5) zum Kraftstoffhochdruckspeicher (4) vorgesehen ist, und ein zusätzliches Ventil (13), das im Bypass (14) vorgesehen ist, umfasst und der Bypass (14) zwischen dem Ventil (11) und ...

Verfahren und Steuerungseinrichtung zum Betreiben einer Common-Rail Kraftstoffversorgungsanlage

Verfahren zum Betreiben einer Common-Rail Kraftstoffversorgungsanlage einer Brennkraftmaschine, die einen Niederdruckbereich (4), einen Hochdruckbereich (6) und eine mindestens zwei Hochdruckpumpen (2) aufweisende Hochdruckpumpeinrichtung (3) aufweist, mit der Kraftstoff aus dem Niederdruckbereich in den Hochdruckbereich förderbar ist, wobei im Hochdruckbereich (6) zwischen der Hochdruckpumpeinrichtung (3) und Injektoren (1) ein permanent unter Hochdruck stehendes Druckspeichersystem (7) vorgesehen ist, und wobei eine Fördermenge der Hochdruckpumpeinrichtung (3) über Drosselventile (13) einstellbar ist. Abhängig von einem Betriebspunkt der Brennkraftmaschine werden eine Soll-Fördermenge der Hochdruckpumpeinrichtung (3) und ein Soll-Druck für das Druckspeichersystem (7) bestimmt. Abhängig von der Soll-Fördermenge wird für alle Drosselventile (13) ein Steueranteil für die Stellung des jeweiligen Drosselventils (13) bestimmt, mit welchem dasselbe angesteuert wird. Abhängig von einer Abweichung ...

Verfahren zur Steuerung eines Kraftstoffversorgungssystems einer Brennkraftmaschine

Es wird ein Verfahren zur Steuerung eines Kraftstoffversorgungssystems einer Brennkraftmaschine beschrieben. Bei Stillstand der Brennkraftmaschine wird das Druckbegrenzungsventil durch Vibrationen angeregt.

Fuel supply system, particularly common-rail fuel supply system, for combustion engine, particularly ship diesel combustion engine, has leakage detection screw which is interacted with every permanent high pressure fuel line

The fuel supply system has a leakage detection screw (17,17') which is interacted with every permanent high pressure fuel line staying below high pressure and particularly with every temporary high pressure fuel line staying below high pressure such that a leakage is controlled through the leakage detection screw. The leakage is resulted at a high pressure fuel line or in a connection area.

Fuel injector for internal combustion engine has cam working piston of pump connected to control valves and control system and includes pressure limiting valve

The pressure of fuel in the pressure-limiting valve (60) may overcome a spring of moderate strength using piston with two parts of different diameter. It allows excess fuel to escape to a low- pressure reservoir (24). Control valves (54,59) are connected to a control circuit (56) to regulate flow of high-pressure fuel from the working space of the high-pressure pump (10). Fuel flows through channel (50) to the injector valve (12), to lift the valve body (28) and allow fuel to flow through the injection nozzles (32). The valve is spring-loaded (44) toward its closed position, and has a small control piston (48) and a cylinder with a line running through a working space (49) via throttles (57,58).

Kraftstoffeinspritzrohr für Dieselmotoren

Die Erfindung befaßt sich mit Kraftstoffeinspritzrohren (1) für Dieselmotoren, die geeignet sind, Druckpulsationen in Kraftstoffeinspritzrohr (1) zu verhindern sowie eine stabile Kraftstoffeinspritzung zu gewährleisten und das einen Anschlußbereich hat, der mit großer Stabilität dichtet. Das erfindungsgemäße Kraftstoffeinspritzrohr (1) weist eine konische oder sphärische Sitzfläche (2-1a), eine Überwurfmutter (4) und ein Mündungsrohr (3a, 3b, 3c, 3d, 3e, 3f, 3g) auf, das an einem Ende des Kraftstoffeinspritzrohres (1) oder im Inneren des Kraftstoffeinspritzrohres (1) nahe des Endes desselben angeordnet ist. Das Mündungsrohr (3a...3g) weist einen äußeren Durchmesser auf, der kleiner oder gleich dem Durchmesser einer Rohrbohrung (1-3) des Kraftstoffeinspritzrohres (1) im Inneren des Kraftstoffeinspritzrohres (1) wenigstens nahe dem Endbereich desselben ist. DOLLAR A Das erfindungsgemäße Kraftstoffeinspritzrohr (1) eignet sich besonders für sogenannte Common-Rail-Dieseleinspritzanlagen und ...

I.c. engine fuel injection system having priming accumulator for the actuating fluid

A fuel system for a fuel injected engine, preferably a diesel engine, includes a manifold 8 for supplying actuating fluid to a plurality of fuel injectors 10-13 and an accumulator 16 in fluid communication with the manifold 8. The accumulator is separate from the housing 14 and can be located remotely from the housing 14, above or below the manifold 8. The accumulator 16 is charged while the engine is running by an actuating fluid pump 6 coupled to the manifold 8 via a rail pressure control valve 32. After the engine has been shut off and a particular engine condition is detected, actuating fluid is supplied to the manifold 8 by the accumulator 16 to fill voids left by contracting actuating fluid. A control valve 20 responsive to engine or actuating fluid temperature controls the flow of actuating fluid between the accumulator 16 and the manifold 18. In a modification (fig.2) the control valve is replaced by an orifice (50).

Fuel injection apparatus for internal combustion engines

Fuel injection system for an internal combustion engine

A pump control module

Injecting apparatus and method of using an injecting apparatus

Improvements relating to power transmission means for the driving of subsidiary parts in internal combustion engines

... 719,095. Flexible couplings. DAIMLERBENZ AKT.-GES. Feb. 8, 1952 [Feb. 8, 1951], No. 3368/52. Class 80 (2) [Also in Groups XXVII and XXXII] A member 4 transmitting the drive from an internal-combustion engine to a subsidiary part is connected to the engine crankshaft by a resilient coupling, the member 4 being within and the resilient coupling being outside the engine crankcase. As shown, a portion 2 of the crankshaft 3 extends through the crankcase wall 1 and the member 4 is freely mounted on the portion 2. The member 4 is integral with, or is connected by dogs 5, to a revoluble part 6 formed with a flywheel 7 and freely mounted on the portion 2. A hub member 8 grooved to receive a driving belt is fixed to the portion 2 and is coupled to the flywheel 7 by pins 9 engaging in rubber bushes 10 in holes in the flywheel 7. The bushes 10 may be vulcanized to the pins and/or to the disc 7. Seals 11, 12, prevent oil from the crankcase from reaching the flexible coupling. The flywheel 7 may serve ...

Improvements in internal combustion engines

... 171,106. Viratelle, M. N. Nov. 6, 1920, [Convention date]. Driving-gear.-In a two cylinder engine, a flywheel a, b carried by crank pins d<1>, d<2> is mounted between a pair of connecting rods f<1>, f<2> located between the rods and the crank webs. To facilitate starting, the shaft x carries a spur wheel q gearing with a pinion on a shaft carrying a spur wheel engaging both a pinion on the crank shaft and a pinion on a cam shaft for actuating the valves.

IGNITION TIMING DEVICES FOR INTERNAL COMBUSTION ENGINES

... 1,213,477. Ignition systems; timing ignition. COMPAGNIE DES COMPTEURS. Dec.6, 1967 [Dec. 13, 1966], No.55462/67. Heading F1B. An ignition timing device for an internal combustion engine comprises current producing means for supplying an electrical current to a capacitance commencing at an instant when the piston reaches a predetermined position, the valve of the current being proportional to w (a+ bw), where w is proportional to the speed of the engine and a and b are constants, and threshold means for producing an ignition signal in response to the voltage on the capacitance reaching a threshold value. As shown the circuit includes three transistors T 1 , T 2 , T 3 arranged to be cut off when the piston reaches a predetermined position. Connected across capacitor C is a threshold device ST which may be for example a unijunction transistor Schmitt trigger, tunnel diode or the like, which acts wherever the voltage across the capacitor C reaches the triggering voltage V s of the device ST ...

Fuel injection equipment

FUEL INJECTION SYSTEM FOR DIESEL ENGINES

Injector apparatus

An injector apparatus and a reciprocating internal combustion engine are disclosed. The injector is suitable for injecting fluid under pressure into a chamber 132, particularly the cylinder of a piston 134 engine, and comprises a body 112, a first piston 114 moveable in the body, the first piston defining a first working area facing an associated chamber, a high pressure piston 118 defining a high pressure working area facing a high pressure chamber 119’, the first working area being greater than the high pressure working area. The first plunger 114 compresses fluid in the high pressure chamber using the high pressure plunger 118. The injector apparatus has two configurations having different ratios of the first working area to high pressure working area. The high pressure area may be defined by a plurality of pistons in a plurality of chambers. Vent valve 96’ may be opened or closed to alter the configuration of the injector by enabling or disabling high pressure chambers. By changing ...

FUEL INJECTION SYSTEM

INJECTION INJECTOR FOR INTERNAL-COMBUSTION ENGINES

INJECTOR FOR THE INJECTION OF FUEL INTO COMBUSTION CHAMBERS OF INTERNAL-COMBUSTION ENGINES, IN PARTICULAR PIEZOAKTORGESTEUERTER COMMON RAIL INJECTOR

DEVICE FOR INJECTING GASEOUS FUEL FOR FUEL FORCE ENGINES

INTERMEDIATE PLATE FOR A FUEL INJECTOR AND FUEL INJECTOR

DRIVE BELT TRANSMISSION

Kraftstoffversorgungsanlage

The invention relates to a fuel supply system and particularly provides a common-rail fuel supply system applied to the internal combustion engine of a marine diesel engine, which comprises a low-pressure area. The low-pressure area is provided with a pumping device for pumping the fuel from the low-pressure area to a high-pressure area. Inside the high-pressure area between the pumping device and an ejector applied to a cylinder, an accumulation system is permanently arranged. The accumulation system comprises an accumulation unit coupled through a high-pressure pipeline. The accumulation system is connected with the pumping device through at least one high-pressure pipeline permanently arranged in a high-pressure condition. The accumulation system is connected with the ejector through an ejection loop by means of a high-pressure pipeline occasionally arranged in a high-pressure condition. A pressure limiting valve and a purge valve are interacted with one accumulation unit of the accumulation ...

FUEL INJECTION NOZZLE FOR INTERNAL-COMBUSTION ENGINES.

PROCEDURE FOR INJECTING FUEL

HIGH PRESSURE SENSOR

COMPACT FUEL SYSTEM OF HIGH ACHIEVEMENT WITH MEMORY

Fuel injection valve

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

FUEL INJECTION SYSTEM

Swirl injector for internal combustion engine

Dual-system fuel injection engine

FUEL INJECTION

A method of fuel injection to an engine combustion chamber wherein a fuel holding chamber (4) is maintained at a reference pressure above atmospheric pressure and above the pressure existing in the engine combustion chamber during the injection of fuel; delivering from a metering device (1) (110) a metered quantity of fuel into the holding chamber (4) against said reference pressure; establishing communication through a valve (5) between the holding chamber and the combustion chamber; and maintaining saîd supply of gas to the holding chamber (4) while the valve (5) is open so the pressure of the gas is sufficient to displace the metered quantity of fuel from the holding chamber (4) to the combustion chamber.

FUEL INJECTION SYSTEM FOR DUAL COMBUSTION CHAMBER ENGINE

Brennstoffeinspritzvorrichtung für Verbrennungskraftmaschinen.

Brennstoffeinspritzvorrichtung für Verbrennungskraftmaschinen.

Brennstoffeinspritzvorrichtung für Verbrennungskraftmaschinen.

Brennstoffeinspritzvorrichtung für Verbrennungskraftmaschinen.

Verfahren und Einrichtung zur luftlosen Brennstoffeinspritzung bei Ölmotoren mit Zündung durch Verdichtungswärme.

Dispositif de commande de pompe d'alimentation en combustible pour moteurs Diesel et semi-Diesel à marche rapide.

Brennstoffeinspritzventil an Brennkraftmaschinen mit einer durch den Brennstoffdruck gesteuerten Düsennadel.

Einrichtung zur Brennstoffzufuhr für Einspritzbrennkraftmaschinen mit luftloser Einspritzung.

Brennstoffeinspritzeinrichtung mit Akkumulator und hydraulischer Düsenventilsteuerung für Brennkraftmaschinen.

Mit einer Metallfeder versehenes Brennstoffventil für Brennkraftmaschinen.

Einrichtung an Brennstoffeinspritzanlagen von Brennkraftmaschinen mit variabler Drehzahl, insbesondere von Fahrzeugmotoren, mit flüssigkeitsgesteuerter Einspritzdüse.

Dispositif pour régler la pression de sortie d'une pompe.

Verfahren zum Inganghalten von Brennkraftmaschinen, während sie Fremderschütterungen ausgesetzt sind.

Dispositif d'injection de combustible liquide de moteur à combustion interne.

Verfahren zum Zerstäuben von Brennstoff und Einrichtung zur Ausübung des Verfahrens.

Brennstoffeinspritzvorrichtung.

Brennstoffeinspritzvorrichtung für mehrzylindrige Brennkraftmaschinen.

Verbrennungsmotor mit Steuerventil zur Steuerung von durch seine Saugluft betätigten Einrichtungen

Brennstoffpumpe an umsteuerbaren Brennkraftmaschinen mit luftloser Brennstoffeinspritzung.

Brennstoffeinspritzvorrichtung für Verbrennungskraftmaschinen mit Füllungsspeicherung des Brennstoffes und vom Brennstoff selbst geöffnetem Brennstoffventil.

Antriebsanlage für Schienenfahrzeuge

Brennstoffeinspritzvorrichtung an einer mehrzylindrigen Brennkraftmaschine

Einrichtung zum Drehen von Kraft- und Arbeitsmaschinen

FUEL INJECTION DEVICE AT AN INTERNAL COMBUSTION ENGINE ACCORDING TO THE DIESEL PRINCIPLE.

Accumulator fuel injection system for internal combustion engines.

Das Speichereinspritzsystem zur intermittierenden Einspritzung von Hochdruckbrennstoff in die Brennräume einer Brennkraftmaschine weist eine Hochdruckfördereinrichtung (54) auf, welche über eine Hochdruckspeiseleitung (60) zwei externe Einzelspeicher (72, 74) speist. Von jedem der externen Einzelspeicher (72, 74) führen individuelle Hochdruckleitungen (78) zu den wenigstens drei zugeordneten Einspritzeinheiten (10). Die Hochdruckleitungen (78) verbinden die externen Einzelspeicher (72, 74) mit den diskreten Speicherkammern (14) der Einspritzeinheiten (10) drosselungsfrei. Jedem der Einzelspeicher (72, 74) ist jedoch eine Drosselvorrichtung (76) zugeordnet, welche den Fluss des Hochdruckbrennstoffs in beiden Richtungen wenigstens annähernd gleich drosselt. Dadurch werden die geforderten reproduzierbar gleichen Einspritzvorgänge der Einspritzventile der Einspritzeinheiten (10) erzielt, obwohl die Leitungselemente (80) dazu eine zu geringe Speicherwirkung aufweisen.

High pressure sensor.

Accumulator fuel injection system for internal combustion engines.

Das Speichereinspritzsystem zur intermittierenden Einspritzung von Hochdruckbrennstoff in die Brennräume einer Brennkraftmaschine weist eine Hochdruckfördereinrichtung (54) auf, welche über eine Hochdruckspeiseleitung (60) zwei externe Einzelspeicher (72, 74) speist. Von jedem der externen Einzelspeicher (72, 74) führen individuelle Hochdruckleitungen (78) zu den wenigstens drei zugeordneten Einspritzeinheiten (10). Die Hochdruckleitungen (78) verbinden die externen Einzelspeicher (72, 74) mit den diskreten Speicherkammern (14) der Einspritzeinheiten (10) drosselungsfrei. Jedem der Einzelspeicher (72, 74) ist jedoch eine Drosselvorrichtung (76) zugeordnet, welche den Fluss des Hochdruckbrennstoffs in beiden Richtungen wenigstens annähernd gleich drosselt. Dadurch werden die geforderten reproduzierbar gleichen Einspritzvorgänge der Einspritzventile der Einspritzeinheiten (10) erzielt, obwohl die Leitungselemente (80) dazu eine zu geringe Speicherwirkung aufweisen.

Common rail pipe

Fuel jet method

Novel method of making walking engines are more economical

New process allowing to make go to vacuum the spark-ignition engines for cars so that those are done

Introduction of fuel under pressure into the injector of an engine to combustioninterne

Device of fuel injection for internal combustion engines

Device to allow the use of fuel of reserve of the motor vehicles

Improvements to devices which control the admission of the explosive mixture in the engine cylinders

Coal cutter with device of connection of the crankcase to the gear box casing

Injector for internal combustion engines

Process of injection of fuel in the internal combustion engines

Improvements with the apparatuses of fuel injection for the internal combustion engines

Engine without valves

FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES.

PROPULSIVE INSTALLATION FOR RAILWAY VEHICLES.

METHOD AND CONTROL UNIT FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE

Fuel Injector With Needle Control System That Includes F, A, Z And E Orifices

A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber and an E orifice. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices.

Fuel Injection System For an Internal Combustion Engine

The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased.

Nozzle and needle of a high-pressure unit fuel injector

A unit fuel injector ( 30 ) has a nozzle ( 36 ) providing axial guidance of a needle ( 72 ) at points proximal and distal to a needle feed cavity ( 81 ). The needle has a multi-lobular formation ( 200 ) providing distal guidance of the needle while allowing fuel from the needle feed cavity to flow past for injection from orifices ( 86 ) when the needle is unseated from a seat on a tapering surface ( 82 ). Fuel is delivered to the needle feed cavity through a slant passage ( 85 ) in the nozzle non-parallel to a longitudinal axis (AX) along which the needle is displaced. The orifices are arranged in a hemispherically contoured surface ( 83 ) distal to the seat and centered on a point on the longitudinal axis. The orifices have circular transverse cross sections. The axis of each orifice extends radially of the point on the longitudinal axis at an oblique angle to the longitudinal axis.

Pressure recovery system for low leakage cam assisted common rail fuel system, fuel injector and operating method therefor

A fuel system includes a plurality of fuel injectors each defining a nozzle supply passage, a nozzle outlet, a low pressure space, and a drain. The fuel system includes a plurality of mechanically actuated pressure intensifiers each including a tappet and being positioned partially within one of the fuel injectors, and a common rail fluidly connecting with each of the fuel injectors. Each of the fuel injectors further includes an injection pressure control mechanism having an injection pressure control valve. Each injection pressure control valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the pressure intensifier with the low pressure space at a first position, and fluidly connects the pressure intensifier with the common rail and blocks the pressure intensifier from the low pressure space at a second position. Each of the fuel injectors further includes a pressure recovery mechanism having a pressure recovery valve. Each pressure recovery valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the low pressure space and the drain at the first position, and fluidly connects the low pressure space with the common rail and blocks the low pressure space from the drain at the second position. Injecting fuel via operating the fuel system may include operating the fuel system in a low leakage mode where the pressure intensifier displaces fuel at a low pressure, between high pressure injections.

High pressure fuel pump

A discharge valve body and a relief valve body are coaxially arranged in-series in a discharge-relief valve unit, which is accommodated in a fuel discharge passage. When a first forward force acting on the discharge valve body in its valve opening direction becomes larger than a second rearward force acting on the same valve body in a valve closing direction, the discharge valve body is moved in its valve closing direction, so that fuel is pumped out from a fuel pressurizing chamber to a discharge port. When a second forward force acting on the relief valve body in a valve opening direction becomes larger than a first rearward force acting on the same valve body in its valve closing direction, the relief valve body is moved in its valve opening direction, so that a fuel relief is allowed from a discharge-port side to a pressurizing-chamber side.

Electromagnetically actuatable valve

An electrically actuatable valve for injecting fuel includes a magnetic actuator having multiple components, at least one component of the magnetic actuator having multiple sectors made of soft magnetic material and multiple insulating separating webs. A separating web is situated between each two neighboring sectors and entirely separates the neighboring sectors from one another electrically.

Control system implementing polarity-switching waveforms

A control system is disclosed. The control system may have an armature, windings associated with the armature, and at least one power supply. The control system may also have a controller in communication with the windings and the at least one power supply. The controller may be configured to direct a first current waveform having a first polarity into the windings during a first period of time to move the armature in a desired manner, and to direct a second current waveform having a second polarity into the windings during a second period of time to move the armature in the desired manner.

THERMALLY VOLUME-NEUTRAL STROKE TRANSMITTER, IN PARTICULAR FOR METERING VALVE WITHOUT HYDRAULIC COMPENSATOR

In addition to liquid in a thermal volume-neutral stroke transmitter, first and/or second displacement body(ies) is/are positioned in the stroke transmitter, for displacing the liquid. These three materials in the closed system are designed so that the stroke transmitter remains pressure-free during temperature changes. 116-. (canceled)17. A stroke transmitter , comprising: a first housing component enclosing a first volume filled with a fluid and having a first effective cross-sectional area that can be varied, and', 'a second housing component enclosing a second volume filled with the fluid and having a second effective cross-sectional area that can be varied, the overall housing externally delimiting a total volume equal to a first sum of the first and second volumes;, 'an overall housing having'}a throttling port permitting fluid exchange between the first and second volumes, where a first product formed by a first stroke of the first effective cross-sectional area times a ratio of the first effective cross-sectional area to the second effective cross-sectional area corresponds to a second stroke of the second effective cross-sectional area; andat least one displacement element positioned in the total volume, where the overall housing, the fluid and the at least one displacement element are coordinated to complement one another so that a change in the total volume of the overall housing caused by a change in temperature corresponds to a combined change in fluid volume and at least one displacement element volume caused by the change in temperature.18. The stroke transmitter as claimed in claim 17 , wherein a second product of the total volume times an overall housing volume expansion coefficient corresponds to a second sum of a third product of the fluid volume times a fluid volume expansion coefficient plus respective products of a displacement element volume and a displacement element volume expansion coefficient for each of the displacement elements.19. The ...

Method and Control Unit for Controlling an Internal Combustion Engine

A method and a control unit are disclosed for controlling an internal combustion engine having fuel injector(s), a camshaft for actuating inlet and/or outlet valve(s), a valve-train adjusting device for controllably changing the actuating characteristic of at least one valve which is actuated by means of the camshaft, and optionally having a camshaft sensor which supplies a camshaft signal dependent on the camshaft angle, a crankshaft sensor which supplies a crankshaft signal representing the crankshaft angle, and a control unit for controlling the fuel injection and the valve-train adjusting device. In order to obtain information about the current setting of the valve-train adjusting device, at least one cylinder pressure signal supplied by a cylinder pressure sensor for measuring the pressure in an associated cylinder is evaluated with regard to interference signals, and the evaluation result is taken into consideration in the control of the valve-train adjusting device. 1. A method for controlling a single-cylinder or multi-cylinder internal combustion engine having at least one fuel injector per cylinder for injecting fuel , at least one camshaft for actuating at least one inlet valve and/or at least one outlet valve , wherein a valve drive adjustment device is provided for controllable change of the actuation characteristic of at least one valve that is actuated by means of the camshaft , a crankshaft sensor which outputs a crankshaft signal which represents the crankshaft angle , and a control unit for controlling the fuel injection and the valve drive adjustment device , the method comprising:the control unit receiving at least one cylinder pressure signal from a cylinder pressure sensor for measuring the pressure in an associated cylinder,the control unit evaluating the at least one cylinder pressure signal with regard to interference signals, andthe control unit controlling the valve drive adjustment device based at least on the result of the evaluation of ...

VALVE WITH PRESSURE CONTROL FUNCTION

In a valve with pressure control function for common-rail heavy oil injection systems for internal combustion engines, including a valve support, a valve piston movably arranged in the valve support and interacting with a valve seat with the valve closed, and a compression spring applying a compressive force on the valve piston in the closing direction, a pin acting on the valve piston in the closing direction is arranged to be movable by the aid of an actuating means against the compressive force of the compression spring for controllably opening the valve so as to provide a flushing function. 1182118222421302124. A valve with pressure control function for common-rail heavy oil injection systems for internal combustion engines , including a valve support () , a valve piston () movably arranged in the valve support () and interacting with a valve seat () with the valve closed , and a compression spring () applying a compressive force on the valve piston () in the closing direction , characterized in that a pin () acting on the valve piston () in the closing direction is arranged to be movable by the aid of an actuating means against the compressive force of the compression spring () to controllably open the valve so as to provide a flushing function.2242130. A valve according to claim 1 , characterized in that the compression spring () acts on the valve piston () in the closing direction via the interposed pin ().3243031. A valve according to claim 1 , characterized in that the compression spring () claim 1 , on the side facing away from the pin () claim 1 , is held via an interposed adjusting disc ().42625303024. A valve according to claim 1 , characterized in that the actuating means comprises an actuating piston () movably mounted in a cylinder () and capable of being brought into operative connection with a contact surface of the pin () for displacing the pin () against the compressive force of the compression spring ().53026. A valve according to claim 4 , ...

Valve assembly for an injection valve, injection valve and method for assembling a valve assembly of an injection valve

A valve assembly for an injection valve and a method for assembling a valve assembly are provided. The valve assembly includes a valve body with a central longitudinal axis and having a cavity with a fluid inlet portion and a fluid outlet portion, an end portion being arranged at an axial end facing away from the fluid outlet portion, and a seat being arranged at an axial end of the valve body facing the fluid outlet portion. A valve needle is axially movable in the cavity and prevents a fluid flow through the fluid outlet portion in a closing position and releases the fluid flow through the flu-id outlet portion in further positions. The valve needle has an axial end facing away from the fluid outlet portion and facing the end portion, and a seat part resting on the seat of the valve body in the closing position. A contact area between the seat part and the seat of the valve body has a first outer diameter. The valve assembly includes an electro-magnetic actuator unit being designed to actuate the valve needle. A bellow arrangement includes a bellow and an end portion, the bellow is fixedly coupled to the end portion in a coupling area. The coupling area has a second outer diameter. The first outer diameter is equal to the second outer diameter.

Dual solenoid fuel injector with selectively actuable input and output valves

The present invention provides a fuel injector for an internal combustion engine. The fuel injector comprises a housing with an injector stem positioned inside the housing such that the injector stem comprises lower and upper portions. A first fluid chamber is located at the lower portion and a second fluid chamber is located at the upper portion with a seal positioned between the fuel chambers. A fuel duct is connected to the first fluid chamber and input and output ducts are connected to the second fluid chamber to allow fuel to fill and drain from the second fluid chamber. A first valve attached to the input duct and a second valve attached to the output duct are selectively actuable to open and close. The fuel injector further comprises a spring biasing the injector to a closed position, a heating element and a controller element.

Common rail slurry fuel injector system

A fuel injection system is described for injecting slurry fuels into the combustion chamber of a diesel engine, equipped with a fuel common rail, and fitted with a gas to fuel contactor chamber for dissolving supplementary atomizing gas into the continuous phase of the slurry fuel, at high pressure. Each fuel injector comprises a combined double valve for starting and stopping fuel injection, so that slurry fuel containing atomizing gas is only depressurized when injected into the engine combustion chamber, when such depressurization greatly improves fuel atomization and combustion efficiency. In this way small bore, high speed, diesel engines can be efficiently operated on high viscosity, low cost fuels such as tars from tar sands, tars from coal and biomass, and residual petroleum fuels.

Squeeze clip ground strap

Vehicles and engines are provided. The engine, for example, may include a first engine component configured to be ohmically coupled to a common ground, a second engine component configured to be coupled to the first engine component, the second engine component comprising an insulative materially ohmically isolating the second engine component from the first engine component, the second engine component including an inclusion having a predetermined depth along a surface of the second engine component configured to be coupled to the first engine component, a third engine component configured to be coupled to the second engine component, and a spring clip configured to be ohmically coupled to the third engine component, wherein the spring clip is further configured to be disposed within the inclusion of the second engine component and to have a deflectable surface having an undeflected depth greater than the predetermined depth of the inclusion.

CLOSURE BOLT FOR AN INJECTOR

A closure bolt for an injector of a modular common-rail fuel injection system includes at least one high-pressure port for high-pressure fuel and a bolt-like portion which is configured to be inserted into an opening of the injector and which has a first, preferably conical, sealing surface for closing the opening in a high-pressure-tight manner. The bolt-like portion has a high-pressure bore which is hydraulically connected to the high-pressure port and which issues into the injector. The closure bolt further includes a throughflow limiter configured to limit the flow rate of fuel delivered into the injector. The bolt-like portion has an insert in which the throughflow limiter is formed and which bears the first sealing surface. 1. A closure bolt for an injector of a modular common-rail fuel injection system , comprising:at least one high-pressure port formed in the closure bolt for high-pressure fuel;a bolt-like portion configured to be inserted into an opening of the injector, the bolt-like portion having (i) a first sealing surface configured to close the opening in a high-pressure-tight manner and (ii) a high-pressure bore which is hydraulically connected to the high-pressure port and which issues into the injector; anda throughflow limiter configured to limit the flow rate of fuel delivered into the injector,wherein the bolt-like portion has an insert in which the throughflow limiter is formed and which bears the first sealing surface.2. The closure bolt according to claim 1 , wherein the insert has a shoulder with a second sealing surface which interacts with a counterpart surface of the bolt-like portion.3. The closure bolt according to claim 1 , wherein an axial portion of the insert is received in a receiving bore of the bolt-like portion.4. The closure bolt according to claim 3 , wherein the throughflow limiter is arranged at least partially in the axial portion of the insert.5. The closure bolt according to claim 3 , wherein the axial portion of the ...

INTAKE AND EXHAUST SYSTEM FOR MULTI-CYLINDER ENGINE

A multi-cylinder engine intake and exhaust having a plurality of independent exhaust passages each connected to an exhaust port in a respective one of a plurality of cylinders, a collecting pipe connected to downstream ends of the plurality of independent exhaust passages, and a volume-enlarged portion provided downstream with respect to the collecting pipe. Each of at least a downstream portion of each of the plurality of independent exhaust passages and at least an upstream portion of the collecting pipe is formed such that a cross-sectional area thereof gradually decreases toward a downstream direction. The volume-enlarged portion is formed such that a cross-sectional area thereof is relatively increased so as to cause a positive pressure wave of exhaust gas reaching the volume-enlarged portion to be reflected and converted to a negative pressure wave. 1. An intake and exhaust system for a multi-cylinder engine having a plurality of cylinders each provided with an intake port , an exhaust port , an intake valve capable of opening and closing the intake port , and an exhaust valve capable of opening and closing the exhaust port , the intake and exhaust system comprising:a plurality of independent exhaust passages each connected to the exhaust port in a respective one of the plurality of cylinders, or the exhaust ports in two or more of the plurality of cylinders, whose exhaust strokes are not successive with respect to each other;a collecting pipe connected to downstream ends of the plurality of independent exhaust passages to allow exhaust gas passing through the plurality of independent exhaust passages to be collected together;a volume-enlarged portion provided downstream with respect to the collecting pipe; andvalve drivers capable of driving the intake valve and the exhaust valve in each of the plurality of cylinders,wherein:among the plurality of independent exhaust passages, at least two connected to respective ones of two of the plurality of cylinders, ...

RELIEF VALVE FOR HIGH-PRESSURE FUEL PUMP

A relief valve includes a valving element, a movable holder, a housing having a guide hole and a valve seat, and a resilient member. The valving element is lifted from its seated state, in which the valving element is engaged with the valve seat, toward a pressurizing chamber in a lift period. The lift period includes a lift first period and a lift second period. An amount of the lift of the valving element reaches a set distance in the lift first period. The lift second period is after the amount of the lift of the valving element has reached the set distance. The movable holder slides inside the guide hole both in the lift first period and in the lift second period. A minimum clearance area between the movable holder and the guide hole is larger in the lift second period than in the lift first period. 1. A relief valve adapted for a high-pressure fuel pump that includes a pressurizing chamber and a high-pressure fuel passage and that pressurizes fuel drawn into the pressurizing chamber to discharge fuel into the high-pressure fuel passage , the relief valve disposed between the pressurizing chamber and the high-pressure fuel passage and configured to release pressure in the high-pressure fuel passage into the pressurizing chamber when the pressure in the high-pressure fuel passage becomes higher than pressure in the pressurizing chamber by a set pressure difference or larger , the relief valve comprising:a valving element that is reciprocatable between the pressurizing chamber and the high-pressure fuel passage;a movable holder that is disposed on the pressurizing chamber-side of the valving element and holds the valving element wherein the movable holder is movable integrally with the valving element; a guide hole that accommodates the movable holder therein and guides the movable holder toward the pressurizing chamber or toward the high-pressure fuel passage; and', 'a valve seat with or from which the valving element is engaged or disengaged respectively on the ...

Pressure Relief Valve Arrangement for a Fuel Line

The present invention concerns a pressure control valve system for a fuel line with a main fuel section that can be closed with a first spring-loaded sealing body for maintaining a fuel pressure in the fuel line whereby the first sealing body comprises a sealing body head for sealing the main fuel line that can be pressed with spring force again a sealing seat, an auxiliary fuel line which is formed in the first spring loaded sealing body for filling the fuel line with fuel, and second spring-loaded sealing body which is provided for sealing the auxiliary fuel line 1. Pressure control valve system for a fuel line comprising:a main fuel line which can be closed with a spring-loaded sealing body for maintaining a fuel pressure in the fuel line, whereby the first sealing body comprises a sealing body head for sealing the main fuel line, which can be pressed with spring force against a sealing seat,an auxiliary fuel line formed in the first spring-loaded sealing body for filling the fuel line with fuel, anda second spring-loaded sealing body provided for closing the auxiliary fuel line.2. Pressure control valve system according to claim 1 , whereby the auxiliary fuel line is an axial bore through the first spring-loaded sealing body.3. Pressure control valve system according to claim 1 , wherein the first spring-loaded sealing body comprises a cylindrical shaft that extends into the sealing body head and a spring claim 1 , that surrounds the cylindrical shaft and acts on the sealing body head.4. Pressure control valve system according to claim 1 , wherein the sealing body head has a mushroom-shape with rotational symmetry.5. Pressure control valve system according to claim 1 , wherein the auxiliary fuel line comprises a sealing seat for holding the second spring-loaded sealing body.6. Pressure control valve system according to claim 1 , wherein an outer wall of the first spring-loaded sealing body has at least one axial line for conducting fuel.7. Pressure control valve ...

METHOD OF PRODUCING FUEL DISTRIBUTION PIPE

A method of producing a fuel distribution pipe includes providing a forged bar made of metal, forming a main bore in the forged bar so as to extend along an axial direction of the forged bar, forming an injector bore having an injector opening in the forged bar, forming a bolt through hole having a bolt opening in the forged bar, obtaining a base pipe having the main bore, the injector bore and the bolt through hole from the forged bar, and bending the base pipe such that the injector opening of the injector bore and the bolt opening of the bolt through hole are provided along a line parallel to the axis of the main bore. The injector bore directly communicates with the main bore and the bolt through hole does not communicates with the main bore. 1. A method of producing a fuel distribution pipe to be attached to a cylinder head ,the method comprising:providing a forged bar made of metal;forming a main bore in the forged bar so as to extend along an axial direction of the forged bar, the main bore through which fuel is allowed to flow;forming an injector bore in the forged bar, the injector bore having an injector opening and directly communicating with the main bore, the injector bore being configured to receive an injector therein through the injector opening;forming a bolt through hole in the forged bar, the bolt through hole having a bolt opening and not communicating with the main bore, the bolt through hole through which a bolt is to be passed to fix the pipe to the cylinder head;obtaining a base pipe having the main bore, the injector bore, and the bolt through hole from the forged bar; andbending the base pipe such that the injector opening of the injector bore and the bolt opening of the bolt through hole are provided along a line parallel to the axis of the main bore.2. The method of producing a fuel distribution pipe according to claim 1 , wherein the bending step includes bending a portion of the base pipe in which the injector bore is formed such that ...

Drain for Fuel Pump

A fuel pump and method for draining such and for providing a lubrication fluid sump level for startup of the fuel pump are disclosed. The fuel pump may comprise a housing, a first plunger apparatus, and a camshaft rotatably mounted in the housing. The camshaft has a first end and a second end and may define a bore extending from the first end to the second end. The camshaft may include a first interface operatively connected to the first plunger apparatus.

Injection valve

An injection valve for injecting fuel into a combustion chamber of an internal combustion engine comprises a valve seat, a valve element, at least one injection opening formed in the valve seat and leading to the combustion chamber, the at least one injection opening opened or closed by a stroke motion of the valve element, a catalytic coating provided in a region of the injection valve which faces the combustion chamber, and at least one protuberance which is elongated in a direction of the combustion chamber and projects into the combustion chamber.

VALVE DEVICE FOR CONTROLLING OR METERING A FLUID

A valve device for controlling or metering a fluid includes a housing, a flow duct formed in the housing, and a valve body arranged in the flow duct. The valve body has a sealing section which, when the valve device is closed, rests on a sealing seat on the housing. The sealing section and sealing seat together form a sealing region. When the valve device is closed, a decay chamber is defined immediately upstream of the sealing region in the flow duct. The decay chamber is bounded by a baffle wall that is tilted with respect to the normal to the sealing region at an angle of at most 15° in the flow direction to 60° counter to the flow direction. 1. A valve device for controlling or metering a fluid , comprising:a housing;a flow channel, formed in the housing; anda valve body arranged in the flow channel, the valve body having a sealing section which, when the valve device is closed, bears against a housing-side sealing seat, the sealing section and sealing seat together forming a sealing region,wherein, when the valve device is closed, there is a decaying space defined in the flow channel immediately upstream of the sealing region, the decaying space is being delimited by a deflector wall that is tilted at least in regions with respect to the normal to the sealing region at an angle of from at most 15° in the flow direction to at most 60° counter to the flow direction.2. The valve device as claimed in claim 1 , wherein the deflector wall is tilted at least in regions with respect to the normal to the sealing region at an angle of from at most 5° in the flow direction to at least 20° counter to the flow direction.3. The valve device as claimed in claim 1 , wherein the deflector wall is formed on one or more of the housing and the valve body.4. The valve device as claimed in claim 1 , wherein a bounding wall of the flow channel has a rounded portion or a bevel upstream of and close to the deflector wall.5. The valve device as claimed in claim 4 , wherein a bounding ...

PRESSURE-LIMITING VALVE

A pressure-limiting valve is proposed, in particular for a common rail system. The pressure-limiting valve comprises a valve support (), a valve insert () which is connected to the valve support (), a valve piston () which is mounted such that it can slide in the valve insert (), and a closing spring () which acts on the valve piston () with a closing force in the closing direction. By means of the closing force, the valve piston () acts on a valve seat () which produces a hydraulic connection via a valve chamber () between a high-pressure space () and a low-pressure space (), as soon as the hydraulic force which acts on the valve piston () in the opening direction exceeds the closing force of the closing spring (). When the valve seat () is closed, a leakage gap () is formed between the valve chamber () and the low-pressure space (), which leakage gap () makes it possible for the leakage to be discharged out of the valve chamber () into the low-pressure space (). 110121014121316141418403336141650403618504036. A pressure limiting valve , comprising a valve support () , a valve insert () which is connected to the valve support () , a valve piston () which is mounted such that the valve piston can slide in the valve insert () in a guide bore () and a closing spring () which acts on the valve piston () with a closing force in a closing direction , and the valve piston () acts on a valve seat () by means of the closing force , said valve seat producing a hydraulic connection via a valve chamber () between a high-pressure space () and a low-pressure space () , as soon as a hydraulic force which acts on the valve piston () in an opening direction exceeds the closing force of the closing spring () , characterized in that a leakage gap () is formed between the valve chamber () and the low-pressure space () when the valve seat () is closed , which leakage gap () enables leakage to be discharged out of the valve chamber () into the low-pressure space ().250411314. The ...

Two step metering solenoid for multi-physics fuel atomizer

A metering system for a fuel atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of oxidizer to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of fuel to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members.

Multi-fuel system for internal combustion engines

In a multi-fuel system for diesel engines, natural gas is mixed with diesel fuel and conditioned in a mixing chamber before being injected into the mixing chamber of the engine. Filtered blow-by gas may also be introduced into the combustion chamber. A computerized controller is used to determine and control the proportion of diesel fuel, natural gas fuel, the mixing and conditioning of these fuels, and the supply of filtered blow-by gas.

EFI THROTTLE BODY WITH SIDE FUEL INJECTORS

An electronic fuel injection throttle body unit has a core body with two side components. The two side components each including a fuel delivery passage. Four air intake passages extending vertically through the throttle body. Valves are rotatable within the air intake passages. The valves being connected to valve shafts that rotate about respective valve shaft axes. The valve shaft axes and the fuel delivery passages are perpendicular to each other. 120-. (canceled)21. An electronic fuel injection throttle body unit comprising:a throttle body having an upper inlet and a lower outlet, the throttle body configured to mount to an internal combustion engine;at least one bore extending through the throttle body;a first fuel injector disposed at least partially within the throttle body at a first position;the first fuel injector directing fuel into a channel of a fuel distribution ring having a plurality of fuel apertures directing fuel into the at least one bore of the throttle body;a throttle valve disposed within the bore and at a lower elevation than the first fuel injector toward the outlet side of the throttle body; anda throttle lever assembly disposed on a side of the throttle body, a shaft extending from the throttle lever assembly toward the bore to control a position of the throttle valve.22. The electronic fuel injection throttle body unit of claim 21 , further comprising a second bore extending through the throttle body claim 21 , a second fuel injector disposed at least partially within the throttle body at a second position claim 21 , the second fuel injector directing fuel into a channel of a fuel distribution ring having a plurality of fuel apertures directing fuel into the second bore of the throttle body claim 21 , a second throttle valve disposed within the second bore and at a lower elevation that the second fuel injector toward the outlet side of the throttle body.23. The electronic fuel injection throttle body unit of claim 22 , wherein the first ...

HIGH PRESSURE COMMON RAIL FUEL PUMP OUTLET CHECK VALVE SPRING RETAINER METHOD

The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a first flow chamber; a second flow chamber in fluid connection with the first flow chamber, the second flow chamber including a shoulder; a check valve including a first insert and a second insert, the first insert being movable between a first position wherein the first insert forms a seal that inhibits fluid flow between the first and second flow chambers and a second position wherein the first insert permits fluid flow between the first and second flow chambers, the second insert being inserted into the second flow chamber to an extent limited by the shoulder; and a spring having a first end engaging the first insert and a second end engaging the second insert; wherein the first insert moves from the first position to the second position against a biasing force of the spring in response to pressurized fluid in the first flow chamber. 19.-. (canceled)10. A pumping element comprising:a first flow chamber;a second flow chamber in fluid connection with the first flow chamber, the second flow chamber including a first section having a first diameter and a second section having a second diameter, the first diameter being smaller than the second diameter;a first insert being moveable between a first position wherein the first insert forms a seal that inhibits fluid flow between the first and second flow chambers and a second position wherein the first insert permits fluid flow between the first and second flow chambers;a second insert disposed within the second section; anda third insert disposed within the second section, wherein the third insert includes a shell and an insert inserted into the shell to cause expansion of the shell to retain the third insert in a fixed position within the second flow chamber;wherein the second insert is intermediate the first insert and the third insert, and the first insert moves from ...

DUAL-FUEL INJECTOR

A dual-fuel injector for a fuel injection device, including: a liquid fuel injector unit with a nozzle needle assigned to a liquid fuel nozzle arrangement of the dual-fuel injector and which is stroke controllable via a first control chamber; and a gas injector unit with a gas nozzle needle assigned to a gas nozzle arrangement of the dual-fuel injector and which is stroke controllable via a second control chamber. Each of the control chambers can be impinged with a control fluid to control the stroke of the respective nozzle needle. The control fluid from both the control chambers can be discharged. The dual-fuel injector has a control fluid reservoir in which discharged control fluid from the first control chamber can be introduced; the dual-fuel injector is configured to impinge the second control chamber with control fluid from the control fluid reservoir for the stroke control of the gas nozzle needle. 112-. (canceled)13. A dual-fuel injector for a fuel injection device , comprising:a liquid fuel nozzle arrangement;a liquid fuel injector unit having a nozzle needle, which is assigned to the liquid fuel nozzle arrangement, a stroke of the nozzle needle being controllable by a first control chamber;a gas nozzle arrangement;a gas injector unit having a gas nozzle needle, which is assigned to the gas nozzle arrangement, a stroke of the gas nozzle needle being controllable by a second control chamber;wherein the first and the second control chambers are each supplied with a control fluid in order to control the stroke of the respective nozzle needle, and the control fluid is dischargeable from both the first and second control chambers; anda control fluid reservoir, into which discharged control fluid from the first control chamber is introducable;wherein the dual-fuel injector is configured to supply the second control chamber with control fluid from the control fluid reservoir in order to control the stroke of the gas nozzle needle.14. The dual-fuel injector ...

METHOD OF SUPPLYING FUEL TO ENGINE

A method for supplying fuel to an engine is disclosed. The method may include regulating a gas admission valve disposed between a gaseous fuel line and a cylinder intake port to reduce flow of gaseous fuel to the cylinder. The method may also include closing a shut-off valve disposed between a gaseous fuel reservoir and the gaseous fuel line to restrict flow of gaseous fuel from the gaseous fuel reservoir to the gaseous fuel line. Further, the method may include actuating an inert gas inlet valve disposed between an inert gas reservoir and the gaseous fuel line to supply inert gas to the gaseous fuel line and flush the gaseous fuel in the gaseous fuel line into the cylinder via the gas admission valve. Additionally, the method may include closing the inert gas inlet valve to restrict supply of inert gas to the gaseous fuel line. 1. A method for supplying fuel to a dual fuel engine or a gaseous fuel engine , the method comprising:regulating a gas admission valve disposed between a gaseous fuel line and an intake port of a cylinder of the engine to reduce flow of gaseous fuel to the cylinder;closing a shut-off valve disposed between a gaseous fuel reservoir and the gaseous fuel line to restrict flow of gaseous fuel from the gaseous fuel reservoir to the gaseous fuel line;actuating an inert gas inlet valve disposed between an inert gas reservoir and the gaseous fuel line to supply inert gas to the gaseous fuel line and to flush gaseous fuel remaining in the gaseous fuel line into the cylinder via the gas admission valve; andclosing the inert gas inlet valve to restrict supply of inert gas to the gaseous fuel line.2. The method of claim 1 , wherein regulating the gas admission valve comprises actuating the gas admission valve to decrease an opening duration of the gas admission valve.3. The method of claim 1 , further comprising:opening the gas admission valve during the supply of inert gas to the gaseous fuel line;supplying liquid fuel into the cylinder of the engine ...

Valve Assembly for a Fluid Injection Valve and Fluid Injection Valve

A valve assembly for a fluid injection valve has a longitudinal axis and includes a valve seat and a valve disc. The valve seat has an orifice that is laterally offset from the longitudinal axis. The valve disc has a fluid passage which, in a first angular position of the valve disc, is positioned in such fashion that it overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly. The valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position. 1. A valve assembly for a fluid injection valve , the valve assembly having a longitudinal axis and comprising a valve seat , a valve disc and a valve stem , wherein:the valve seat comprises an orifice that is laterally offset from the longitudinal axis,the valve disc comprises a fluid passage which, in a first angular position of the valve disc, overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly,the valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position,the valve stem mechanically interacts with the valve disc to rotate the valve disc around the longitudinal axis, andthe valve stem is axially movable with respect to the valve seat and rotationally fixed with respect to the valve seat, and wherein the valve stem is mechanically coupled to the valve disc such that an axial movement of the valve stem is converted to a rotational movement of the valve disc.2. The valve ...

LAMINATED PIEZOELECTRIC ELEMENT, AND INJECTION DEVICE AND FUEL INJECTION SYSTEM PROVIDED WITH SAME

There are provided a laminated piezoelectric element in which a stress applied to an interface between a cover layer and a stacked body is reduced, and an injection device and a fuel injection system provided with the laminated piezoelectric element. A laminated piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated; and a cover layer disposed so as to surround a side face of the stacked body, and the cover layer has a two-layer structure with an annular boundary when viewed in a section perpendicular to a stacking direction of the stacked body. 1. A laminated piezoelectric element comprising:a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated; anda cover layer disposed so as to surround a side face of the stacked body,the cover layer having a two-layer structure with an annular boundary when viewed in a section perpendicular to a stacking direction of the stacked body.2. The laminated piezoelectric element according to claim 1 ,wherein an air gap is present at the annular boundary.3. The laminated piezoelectric element according to claim 1 ,wherein the two-layer structure is composed of an inner first layer having an annular outer periphery and an outer second layer having an annular inner periphery, anda void is present within the first layer.4. The laminated piezoelectric element according to claim 1 ,wherein the two-layer structure is composed of an inner first layer having an annular outer periphery and an outer second layer having an annular inner periphery, andthe first layer is smaller in elastic modulus than the second layer.5. The laminated piezoelectric element according to claim 3 ,wherein the first layer is made of a silicone resin, and the second layer is made of a nylon resin.6. An injection device claim 3 , comprising:a container provided with an injection hole; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the ...

CONTROL VALVE ASSEMBLY AND METHOD OF MANUFACTURING THEREOF

A control valve assembly of a fuel injector includes a first valve arrangement wherein a first valve spool is guided in a first hydraulic bore provided in a body of the assembly. The control assembly further includes a first tubular sleeve having a seating portion which end face defines the first seating face, the first sleeve being fixed in the first hydraulic bore and the first spool extending through the sleeve. 118-. (canceled)19. A control valve assembly of a fuel injector , said control valve assembly comprising:a first valve arrangement wherein a first valve spool is guided in a first hydraulic bore provided in a body of the control valve assembly, said first valve spool being adapted to move between a closed position wherein a first shoulder face of a first head member of said first valve spool is in sealing contact against a first seating face, and a fully open position wherein a first distant end face of said first head member is in flush continuity with a first under face of the body of the control valve assembly, the shoulder face of the first valve spool being lifted away from said first seating face; anda first tubular sleeve having a seating portion having an end face which defines said first seating face, the first tubular sleeve being fixed in the first hydraulic bore and the first valve spool extending through said first tubular sleeve.20. A control valve assembly as claimed in claim 19 , wherein the first tubular sleeve comprises a spool guiding portion integral to the seating portion claim 19 , said spool guiding portion being arranged inside the first hydraulic bore.21. A control valve assembly as claimed in claim 20 , wherein said spool guiding portion has an inner guiding face against which claim 20 , in use claim 20 , slides the first valve spool claim 20 , and externally an outer face distant from the first hydraulic bore by an outer annular clearance.22. A control valve assembly as claimed in claim 19 , wherein the seating portion is press- ...

LARGE TWO-STROKE COMPRESSION-IGNITED INTERNAL COMBUSTION ENGINE WITH FUEL INJECTION SYSTEM FOR LOW FLASHPOINT FUEL AND A FUEL VALVE THEREFORE

A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time. 18-. (canceled)9. A fuel valve for injecting low flashpoint liquid fuel into the combustion chamber of a large slow running two-stroke turbocharged self-igniting internal combustion engine , said fuel valve comprising:an elongated valve housing with a rear end and a front end,a nozzle with a plurality of nozzle holes, said nozzle being disposed at the front end of said elongated valve housing,a fuel inlet port in said elongated valve housing for connection to a source of pressurized low flashpoint fuel,an actuation fluid port in said elongated valve housing for connection to a source of actuation fluid,an axially displaceable valve needle slidably received in a longitudinal bore in said fuel valve, said valve needle having a closed position and an open position and said valve needle being biased towards said closed position,said valve needle allowing flow of fuel from a fuel cavity to said plurality of nozzle holes when the valve needle is in its open position and said valve needle preventing flow of fuel from said fuel cavity to said plurality of nozzle holes when the valve needle is in its closed position,said valve needle being operably connected to a needle actuation ...

Valve, In Particular A Suction Valve, In A High-Pressure Pump of A Fuel Injection System

The invention relates to a valve, in particular a suction valve, in a high-pressure pump of a fuel injection system, in particular a common rail injection system, comprising a magnet actuator () which has a magnet coil (), a magnet armature () that moves in a stroke-like manner, and a pole core (), wherein the magnet armature () and the pole core () together limit a working air gap (), and the magnet armature () can at least indirectly contact the pole core (), wherein the valve also has a valve element () which can be moved between an open position and a closed position, and which is at least indirectly in mechanical contact with the magnet armature (). According to the present invention, a separate magnet armature insert () arranged in the magnet armature () and/or a separate pole core insert () arranged in the pole core () is provided in the contact area of the magnet armature () on the pole core (), in order to achieve a separation of the mechanical and magnetic forces. The invention also relates to a high-pressure pump with a suction valve of this type. 112261020102028102014108102420102010208102420. A valve , for a high-pressure pump () of a fuel injection system , the valve comprising a magnetic actuator () , which has a magnet coil () , a magnet armature () configured to perform a stroke motion , and a pole core () , wherein the magnet armature () and the pole core () together delimit a working air gap () , and the magnet armature () is configured to come into contact at least indirectly with the pole core () , wherein the valve also comprises a valve element () which is configured to be moved between an open position and a closed position , and which is at least indirectly in mechanical contact with the magnet armature () , characterized in that at least one of a separate magnet armature insert () arranged in the magnet armature () and a separate pole core insert () arranged in the pole core () is provided in a region of contact of the magnet armature () ...

HIGH PRESSURE FUEL PUMP WITH MECHANICAL PRESSURE REGULATION

A high pressure fuel pump includes an inlet metering valve arranged to control a quantity of fuel delivered to the pumping chamber during retracting motion of the pumping plunger. The inlet metering valve includes a metering valve member movable between a closed position and an open position, movement of the metering valve member from the closed position to the open position defining a variable flow area that increases as the metering valve member moves from the closed position toward the open position. An actuator piston in an actuator bore is exposed to pressure in the common rail. The actuator piston is biased toward a first position corresponding to low pressure in the common rail and movable toward a second position corresponding to maximum pressure in the common rail. The actuator piston includes a valve stop that determines a metering position of the metering valve member. 1. A high pressure fuel pump in which a pumping plunger is driven by a cam follower in contact with a profile of a rotating cam , the pumping plunger reciprocating axially in a pumping chamber between a retracting motion during which fuel is delivered to the pumping chamber and a pumping motion during which the plunger pressurizes fuel in the pumping chamber , said pressurized fuel flowing through a pump outlet passage to a pressurized common rail , said fuel pump comprising: a metering valve member movable between a closed position preventing fuel flow into the pumping chamber and an open position allowing fuel to fill the pumping chamber, movement of said metering valve member from said closed position to said open position defining a variable flow area that increases as said metering valve member moves from said closed position toward said open position;', 'an actuator piston in an actuator bore exposed to pressure in said common rail, said actuator piston biased toward a first position corresponding to low pressure in said common rail and movable toward a second position corresponding ...

Injection Valve For An Accumulator Injection System

The present disclosure relates to the field of electromechanics. The teachings may be applied to high-pressure valves, including methods for operating a valve and with devices which are used for activating the valves. Some embodiments include methods for operating a pressure reduction valve for an accumulator injection system, wherein the valve is driven, against a return spring, with an energizable coil and armature, between a closed position and an open position. The method may include: supplying the coil with a defined electrical signal to move the armature, sensing the current intensity profile over time, and determining a movement profile for the defined current signal, including an opening or closing time, based at least in part on the current intensity profile over time. 1. A method for operating a pressure reduction valve for an accumulator injection system , wherein the valve has a valve opening and a closure element driven , against the force of a return spring element , by means of an electromagnetic drive with an energizable coil and a magnetically drivable armature , between a closed position , in which it effects closure of the valve opening , and an open position , in which it at least partially unblocks the valve opening , the method comprising:supplying the coil with a defined electrical signal, at least once, in order to move the armature against the force of the return spring element,sensing the current intensity profile over time in the coil with a current sensor, anddetermining a movement profile of the closure element for the defined current signal, including an opening or closing time, based at least in part on the current intensity profile over time.2. The method as claimed in claim 1 , further comprising:supplying the coil successively with multiple different electrical signals; anddetermining the differences in the current time profiles and the movement data of the armature therefrom.3. The method as claimed in claim 1 , further comprising ...

FUEL INJECTION DEVICE

A fuel injection device injects natural gas from a first injection hole of a first housing and injects light oil form a second injection hole of a second housing. A weld part as a fixation part fixes positions of the first injection hole and the second injection hole such that a spray of natural gas injected from the first injection hole and a spray of light oil injected from the second injection hole contact each other. Thus the spray of light oil self-ignites by compression of air in a cylinder of an internal combustion engine and the spray of natural gas burns by ignition from a flame of the self-ignited light oil. 1. A fuel injection device comprising:a first housing including a first injection hole for injecting first fuel, a first fuel passage communicated with the first injection hole and a first valve seat formed on an inner wall of the first fuel passage;a first needle valve housed inside the first housing to be reciprocally movable in an axial direction of the first housing for opening and closing the first injection hole by separating from and seating on the first valve seat;a second housing including a second injection hole for injecting second fuel of a cetane number different from that of the first fuel, a second fuel passage communicated with the second injection hole, and a second valve seat formed in the second fuel passage;a second needle valve housed inside the second housing to be reciprocally movable in an axial direction of the second housing for opening and closing the second injection hole by separating from and seating on the second valve seat; anda fixation part for fixing positions of the first injection hole and the second injection hole such that a spray of the first fuel injected from the first injection hole and a spray of the second fuel injected from the second injection hole contact each other.2. The fuel injection device according to claim 1 , wherein:the fuel of high cetane number between the first fuel and the second fuel is self ...

APPARATUS FOR CONTROLLING THE LIFT OF A VALVE MEMBER

An apparatus for controlling the lift of a valve member in a flow control valve comprises an end stop assembly having at least two pieces, a plunger with one end interposed between these pieces and biasing members that urge the pieces into contact with the plunger. The plunger is movable by an actuator to thereby move the pieces of the end stop assembly from a first position in which the pieces of the end stop assembly form a first surface for contacting the valve member to a second position in which the pieces form a second surface that comes into contact with the valve member when the valve member is lifted from its seated position, to thereby allow different discrete lifts of the valve member. 112. An apparatus for controlling the lift of a valve member in a flow control valve comprising an end stop assembly having one side that faces said valve member , said end stop assembly comprising two pieces , a plunger with one end interposed between said pieces and biasing members urging said pieces into contact with said plunger , wherein said plunger is actuated to move said pieces from a first position to a second position , wherein in said first position said pieces of said end stop assembly form a first surface that comes into contact with said valve member to allow a first lift L of said valve member and in said second position said pieces form a second surface that comes into contact with said valve member to allow a second lift L of said valve member.23. The apparatus of claim 1 , wherein said plunger is actuated to move said pieces of said end stop assembly to a third position in which said pieces form a third surface that comes into contact with said valve to allow a third lift L of said valve member.3. The apparatus of claim claim 1 , wherein each of said pieces has an inwardly stepped end on said side of said end stop assembly which faces said valve member and the inwardly stepped ends of said pieces form together a cavity which can accommodate an end of said ...

CONTROL VALVE, IN PARTICULAR FOR METERING IN A FLUID FOR A DELIVERY PUMP WHICH IS ARRANGED DOWNSTREAM

A control valve is provided, in particular for metering in a fluid for a delivery pump which is arranged downstream. The control valve has a flow channel, an axially movable valve needle, and a valve element which can be loaded by the valve needle in an opening direction and is arranged in the flow channel. If the valve element is actuated in the opening direction by the valve needle, the fluid can flow back through the flow channel at least temporarily counter to the opening direction of the valve element. Upstream of the valve element as viewed in the backflow direction, the flow channel has a fluidically active shield which keeps the backflow at least partially free of a face of the valve element. 1. A control valve , in particular for metering a fluid for a delivery pump arranged downstream , having a flow channel , an axially movable valve needle , and a valve element that can be urged in an opening direction by the valve needle and is disposed in the flow channel , and when the valve element is actuated in the opening direction by the valve needle , the flow channel can at least temporarily experience a backflow of the fluid through it counter to the opening direction , wherein upstream of the valve element as viewed in the backflow direction , the flow channel has a fluidically active shield , which keeps the backflow at least partly away from a face of the valve element.2. The control valve according to claim 1 , wherein the shield has an encompassing shield portion.3. The control valve according to claim 2 , wherein the shield portion is conical.4. The control valve according to claim 3 , wherein the shield or at least the shield portion is a molded sheet-metal part.5. The control valve according to claim 4 , further comprising a channel claim 4 , which connects a flow region claim 4 , located outside the shield claim 4 , in which upon a backflow a comparatively low static pressure prevails claim 4 , with a region located inside the shield.6. The control ...

CHARACTERISTIC DETERMINING APPARATUS AND CONTROL DEVICE USING SAME

A characteristic determining device is provided which determines fuel injection characteristics of a plurality of fuel injectors for an internal combustion engine. The characteristic determining device includes a pressure sensor and a plurality of pipes each of which connects between the pressure sensor and one of the fuel injectors. The pressure sensor is designed to have a plurality of pressure inputs from the respective fuel injectors through the pipes and outputs a signal indicative of a level of pressure in each of the fuel injectors. The characteristic determining device analyzes the signals from the first pressure sensor to determine the fuel injection characteristics of the respective fuel injectors. These arrangements result in a simplified structure of the characteristic determining device and a decreased manufacturing cost thereof. 1. A characteristic determining device which determines fuel injection characteristics of a plurality of fuel injectors working to spray fuel in a delivery pipe into an internal combustion engine , comprising:a plurality of pipes each of which has a length with a first end and a second end and communicates at the first end with an inside of one of the fuel injectors;a first pressure sensor to which the second ends of at least two of the pipes are joined and which is responsive to a pressure in each of the at least two of the pipes to output a signal as a function of an internal injector pressure that is a pressure of fuel in a corresponding one of the fuel injectors; anda characteristic determiner which analyzes the signal, as outputted from the first pressure sensor, to determine fuel injection characteristics of a corresponding one of the fuel injectors.2. A characteristic determining device as set forth in claim 1 , further comprising a fuel path disposed between the delivery pipe to the fuel injectors claim 1 , the fuel path including first sections leading to spray holes of the respective fuel injectors and a second ...

LARGE TWO-STROKE COMPRESSION-IGNITED INTERNAL COMBUSTION ENGINE WITH FUEL INJECTION SYSTEM FOR LOW FLASHPOINT FUEL AND A FUEL VALVE THEREFORE

A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time. 115-. (canceled)16. A fuel valve for injecting low flashpoint liquid fuel into the combustion chamber of a large slow running two-stroke turbocharged self-igniting internal combustion engine , said fuel valve comprising:an elongated valve housing with a rear end and a front end,a nozzle with a plurality of nozzle holes, said nozzle being disposed at the front end of said elongated valve housing,a fuel inlet port in said elongated valve housing for connection to a source of pressurized low flashpoint fuel, an actuation fluid port in said elongated valve housing for connection to a source of actuation fluid,an axially displaceable valve needle slidably received in a longitudinal bore in said fuel valve, said valve needle having a closed position and an open position and said valve needle being biased towards said closed position,said valve needle allowing flow of fuel from a fuel cavity to said plurality of nozzle holes when the valve needle is in its open position and said valve needle preventing flow of fuel from said fuel cavity to said plurality of nozzle holes when the valve needle is in its closed position,a pump piston received in a first bore in said valve housing with ...

Valve for metering a fluid

A valve for metering a fluid, for example, a fuel injection valve for an internal combustion engine, includes a valve-seat face, an electromagnetic actuator including an armature that includes a through-flow channel that opens with an outlet opening at an end face of the armature, a valve needle on which the armature is movably supported and that is operable using the armature, a valve-closing member that is actuatable by the valve needle and that cooperates with the valve-seat face to form a sealing seat, and a stop element that is mounted fixedly on the valve needle and that interacts with the at least one outlet opening of the at least one through-flow channel such that throttling takes place with respect to the least one through-flow channel when the armature is located with its end face at the stop element.

FUEL INJECTOR

A fuel injector for an internal combustion engine is disclosed. The fuel injector is particularly suitable for use as a dual fuel injector, and comprises a generally tubular outer valve needle, an inner valve needle slidably received in the outer valve needle, and a nozzle body assembly comprising a tip part and a needle guide part. The tip part defines a seating region for the outer valve needle, and the needle guide part comprises a guide bore for slidably receiving the outer valve needle. In one embodiment, a lower bore region of the needle guide part defines a. cavity around the outer valve needle which houses a biasing spring for the outer valve needle and a fuel. A collar for seating the biasing spring can be dimensioned to allow free flow of the fuel from the cavity into an annular accumulator volume defined between the outer valve needle and the bore of the tip part. 1. A fuel injector for an internal combustion engine , comprising:a generally tubular outer valve needle arranged to control the injection of a first fuel from the fuel injector;an inner valve needle slidably received in the outer valve needle; anda nozzle body assembly comprising a tip part and a needle guide part;wherein the tip part defines a seating region for the outer valve needle; andwherein the needle guide part comprises a guide bore for slidably receiving the outer valve needle and a lower bore region adjacent the tip part, the lower bore region of the needle guide part having a larger bore diameter than the guide bore and defining a cavity formed around the outer valve needle for receiving a biasing means and the first fuel.2. The fuel injector according to claim 1 , wherein the biasing means is configured to bias the outer valve needle into engagement with the seating region defined by the tip part.3. The fuel injector according to claim 1 , wherein the outer valve needle includes a collar dimensioned to allow free flow of the first fuel from the cavity into an accumulator volume ...

Fuel Pump Solenoid Assembly Method

A solenoid assembly of a fuel pump is disclosed, including a housing having an open end and a partly closed end; a pole piece fixedly disposed within the housing; a bobbin assembly disposed within the housing and including a coil disposed proximal to the pole piece; and a bobbin retainer disposed between the open end of the housing and the bobbin assembly, a radially outer surface of the bobbin retainer contacting the housing. A portion of the housing which is adjacent the bobbin retainer has an outer surface that is recessed and an inner surface that protrudes against the bobbin retainer. The portion is created by deforming the housing to create the protrusion on the inner surface of the housing. The housing inner surface protrusion provides a press fit engagement with the bobbin retainer. 1. A solenoid assembly of a fuel pump , comprising:a housing having an open end and a partly closed end;a pole piece fixedly disposed within the housing;a bobbin assembly disposed within the housing and including a coil disposed proximal to the pole piece; anda bobbin retainer disposed between the open end of the housing and the bobbin assembly, a radially outer surface of the bobbin retainer contacting the housing,wherein a portion of the housing which is adjacent the bobbin retainer has an outer surface that is recessed and an inner surface that protrudes against the bobbin retainer.2. The solenoid assembly of claim 1 , wherein the housing claim 1 , including the portion thereof claim 1 , is integrally formed as a unitary member.3. The solenoid assembly of claim 1 , wherein the bobbin assembly includes a bobbin around which the coil is wound claim 1 , the bobbin includes a ledge claim 1 , and the pole piece includes a ledge on which the ledge of the bobbin rests.4. The solenoid assembly of claim 1 , wherein the bobbin retainer has a press fit engagement with the portion of the housing and a slip fit relationship with the housing not containing the protruding inner surface claim ...

Method for achieving final air gap and parallelism of a fuel injector control valve

A method is provided for achieving final air gap and parallelism of a control valve of a fuel injector, the control valve having a body defining an transverse top face and including a thick disc magnetic armature having a planar transverse upper face. The method includes a) measuring the actual position from the armature upper face and the body top face and, determining the actual parallelism error between said faces; and b) ablating the armature to generate an ablated upper face parallel to the body top face, the distance from the ablated upper face to the body top face being a final air gap.

HIGH PRESSURE FUEL PUMP

A high pressure fuel pump according to the present invention includes a cylinder which is fitted in a concave portion formed in a pump housing and which defines a compression chamber of the pump and a plunger which pressurizes, by sliding against the cylinder, the fluid in the compression chamber. The high pressure fuel pump is structured such that the fluid sucked into the compression chamber by reciprocating motion of the plunger is pressurized and is then discharged from the compression chamber. 110-. (canceled)11. A high-pressure fuel supply pump comprising:a cylinder having a ceiling portion and a cylindrical portion;a plunger sliding with a sliding portion formed on an inner peripheral surface of the cylindrical portion;a pump housing having an insertion hole through which the cylinder is inserted,the cylinder has a through hole formed in the cylindrical portion, and is press-fitted in the insertion hole so that the ceiling portion is a downstream side in a press-fitting direction,whereinthe cylinder has a first press-fitting portion formed on an outer peripheral surface of the ceiling portion in contact with an inner peripheral surface of the insertion hole and a second press-fitting portion formed on an outer peripheral surface of the cylindrical portion in contact with the inner peripheral surface of the insertion hole,the second press-fitting portion is located closer to the through hole than an opening end of the cylinder into which the plunger is inserted, anda radial gap between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the insertion hole is provided on an upstream side in the press-fitting direction from the second press-fitting portion.12. The high-pressure fuel supply pump according to claim 11 ,wherein the cylinder has an enlarged portion having an inner diameter larger than the sliding portion, the enlarged portion formed between the sliding portion and the ceiling portion.13. The high-pressure fuel ...

CONTROL VALVE

A control valve of a fuel injector includes a generally cylindrical control valve housing having an axis, and a control valve body disposed within the control valve housing. An inlet throttle passage is in fluid communication with the control valve housing and is oriented to be generally tangential to the control valve housing. 1. A control valve of a fuel injector comprising:a control valve housing having an axis;a control valve body displaceable within the control valve housing along the axis; andan inlet throttle passage in fluid communication with the control valve housing and oriented such that a line projected from the inlet throttle passage having the same orientation as the inlet throttle passage is non-intersecting with the valve body.2. The control valve of wherein the inlet throttle passage is generally tangential to the control valve housing.3. The control valve of wherein the inlet throttle passage is oriented to be generally 45 to 90-degrees from a line extending between the axis and the inlet orifice.4. The control valve of wherein the inlet throttle passage is oriented to be generally 65 to 90-degrees from a line extending between the axis and the inlet orifice.5. The control valve of wherein the inlet throttle passage is oriented to be generally perpendicular to the axis.6. The control valve of wherein the inlet throttle passage is oriented to be generally non-perpendicular to the axis.7. The control valve of wherein the wherein the control valve housing is generally cylindrical.8. A control valve of a fuel injector comprising:a generally cylindrical control valve housing having an axis;a control valve body disposed within the control valve housing; andan inlet throttle passage in fluid communication with the control valve housing and oriented to be generally tangential to the control valve housing.9. The control valve of wherein the inlet throttle passage is oriented to be generally perpendicular to the axis.10. The control valve of wherein the ...

Valve for Metering Fluid

A valve for metering fluid having a valve assembly which meters the fluid, and a hydraulic coupler assigned to the valve assembly. The coupler has a housing cup having a cup bottom, cup wall and cup opening; a piston is guided inside the housing cup in axially displaceable manner and delimits a fluid-filled coupler gap in the direction of the cup bottom and delimits an annular gap in the direction of the cup wall; and a cap-shaped diaphragm having a cap bottom and cap shell, which covers the annular gap at the cup opening by the cap bottom and overlaps the cup wall of the housing cup by the cap shell, and is fixed in place at the piston and cup wall in fluid-tight manner. To achieve a sufficiently large volume of the compensating volume enclosed between the diaphragm on the one side and the piston and housing cup on the other side, that is able to accommodate volume changes of the fluid volume in the coupler gap created under pressure, the cap shell includes elastic deformation regions, which follow one another in the circumferential direction, point radially toward the inside, and extend in the radial direction. 115-. (canceled)16. A valve for metering fluid , comprising:a valve assembly to meter the fluid;a hydraulic coupler assigned to the valve assembly, the coupler having a housing cup including a cup bottom, a cup wall and a cup opening, a piston, which is guided in the housing cup so as to be axially displaceable and which delimits a fluid-filled coupler gap by the cup bottom, and which delimits an annular gap by the cup wall, and having a cap-shaped diaphragm having a cap bottom and a cap shell, which covers the annular gap by the cap bottom at the cup opening, and overlaps the cup wall of the housing cup by the cap shell, and which is fixed in place in fluid-tight manner at the piston and the cup wall, wherein the cap shell includes elastic deformation regions.17. The valve of claim 16 , wherein the elastic deformation regions are formed by indentations ...

FUEL INJECTION CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE

A fuel injection control apparatus of an internal combustion engine, capable of controlling the amount of fuel, which is injected from a cylinder injection valve (second fuel injection valve), with high accuracy even when its amount is small, regardless of the operating state of the internal combustion engine, is provided. The fuel injection control device has a fuel pressure adjustment means which, when the injection form of the internal combustion engine is changed, adjusts the working state of a high pressure supply pump such that the amount of fuel injection from the second fuel injection valve stabilizes, before changing the working state of the high pressure supply pump in accordance with the injection form.

Control Valve Assembly And Fuel Injector Incorporating A Control Valve Assembly

A control valve assembly for controlling fuel pressure in a control chamber of a fuel injector. The control valve assembly comprising a valve member arranged in a bore provided in a valve housing, at least one of the valve member and the valve housing being moveable with respect to the other, wherein the valve member comprises a fuel-receiving cavity arranged to receive fuel that distorts at least a portion of the valve member so as to increase an external dimension thereof.

Valve Body and Fluid Injector

A valve body for a fluid injector includes a central longitudinal axis and a one-piece base body. The base body has a side wall defining a recess extending from a fluid inlet side to a fluid outlet side of the base body. The side wall has a thin portion having a decreased wall thickness relative to further portions of the side wall that adjoin the thin portion along the longitudinal direction towards the fluid inlet side and the fluid outlet side. The valve body includes a metallic reinforcement jacket that is rigidly coupled to the base body and which axially overlaps the thin portion having the decreased wall thickness.

Nozzle Body, The Valve Assembly And Fluid Injection Valve

A nozzle body for a fluid injection includes a cavity and a bottom wall delimiting the cavity at a fluid outlet end. The bottom wall is perforated by an injection hole having an inlet opening at an inner surface of the bottom wall and an outlet opening at an outer surface of the bottom wall. The outlet opening has an elongated slit shape having a centerline which is a circular arc with respect to the longitudinal axis. The inlet opening is spaced apart from the longitudinal axis by a radial distance. The inner surface has a concave shape extending away from the fluid outlet end from an apex of the inner surface. Further, the inlet opening is spaced apart from the apex by an axial distance that is smaller than said radial distance.

VALVE FOR CONTROLLING A FLUID WITH INCREASED SEALING ACTION

A valve for controlling a fluid, e.g., fuel, has a closing element and a valve seat. The valve seat has a sealing region and a valve seat region adjoining the sealing region. The closing element seals on the sealing region, the sealing region and the valve seat region merging with one another directly and without a step. A hardness of the sealing region is less than a hardness of the closing element.

FUEL INJECTION DEVICE

A fuel injection device is provided with a valve body, a nozzle needle, a movable plate, and a support spring. The valve body has a control chamber therein. The control chamber is defined by a defining wall which has a dividing wall portion. The dividing wall portion divides the control chamber into an accommodation chamber and a backpressure chamber. The accommodation chamber accommodates a movable plate and a support spring. A fuel pressure in the backpressure chamber is applied to the nozzle needle. The dividing wall portion has a restriction hole fluidly connecting the accommodation chamber and the backpressure chamber with each other, and a support surface supporting the support spring. 1. A fuel injection device comprising:a valve body which defines an injection port, a control chamber filled with a fuel, an inlet passage for introducing the fuel into the control chamber, and an inlet passage for discharging the fuel from the control chamber;a needle which will be displaced by a variation in fuel pressure in the control chamber so as to open/close the injection port;a closing member which is accommodated in the control chamber in a displaceable manner so as to close an inlet opening of the inlet passage, which opens on an opening wall confronting the control chamber; anda biasing member which is accommodated in the control chamber in such a manner as to bias the closing member toward the opening wall, whereinthe control chamber is defined by a defining wall which has a dividing wall portion,the dividing wall portion divides the control chamber into a backpressure chamber for applying a fuel pressure to the needle and an accommodation chamber accommodating the closing member and the biasing member,the dividing wall portion has a restriction hole fluidly connecting the accommodation chamber and the backpressure chamber with each other, andthe dividing wall portion has a support surface supporting the biasing member.2. The fuel injection device according to claim ...

Electromagnetic actuator for a valve mechanism

An electromagnetic actuator for a valve mechanism, in particular in a common rail system of a motor vehicle, comprising an armature tappet for actuating a valve element located in a channel, and comprising a pole core, the armature tappet being movable axially along a central axis of the actuator when an excitation coil of an excitation system is energized. The pole core therefore has a tubular shape and has a circumferential flange in the area of the pole core end facing the channel, said flange extending inward in relation to the central axis. 1. An electromagnetic actuator for a valve mechanism , in a common rail system of a motor vehicle , comprising:an armature tappet for actuating a valve element located in a channel, the armature tappet being movable axially along a central axis of the actuator when an excitation coil of an excitation system is energized;a pole core having a tubular shape and a circumferential flange in an area of the pole core end facing the channel;wherein the flange extends inwards in relation to the central axis.2. The electromagnetic actuator according to claim 1 , wherein the armature tappet is guided in a guide sleeve and the guide sleeve is held clamped between an inner circumferential flange of the pole core and a housing part of the actuator.3. The electromagnetic actuator according to claim 2 , wherein the housing part is a U-shaped spring cover claim 2 , in which a spring mechanism is disposed claim 2 , wherein the spring mechanism is supported in a spring cover and rests against a spring plate fastened to the armature tappet.4. The electromagnetic actuator according to claim 3 , wherein the spring cover is formed of a non-magnetic material.5. The electromagnetic actuator according to claim 2 , wherein the pole core and the guide sleeve are compressed together.6. The electromagnetic actuator according to claim 1 , wherein a tubular shaped armature is provided in which the armature tappet is held compressed with a front part facing ...

Fuel Injection System For An Internal Combustion Engine

The present disclosure relates to internal combustion engines. Various embodiments may include a fuel injection system for an internal combustion engine comprising: a high-pressure fuel pump with a pressure chamber and a pump piston; a high-pressure region downstream of the pump piston; and a valve arrangement connecting the pressure chamber to the high-pressure region. The valve arrangement includes an outlet valve and a pressure-limiting valve. The outlet valve and the pressure-limiting valve are mounted in two separate receptacle bores in a common valve housing. The receptacle bores extend along a longitudinal axis of the valve housing. The valve housing defines a central flow bore. The receptacle bores are each fluidly connected to the central flow bore by a bore intersection. 1. A fuel injection system for an internal combustion engine , the system comprising:a high-pressure fuel pump with a pressure chamber housing a pump piston moving to pressurize a fuel;a high-pressure region downstream of the high-pressure fuel pump into which the pump piston feeds the pressurized fuel; anda valve arrangement connecting the pressure chamber to the high-pressure region;wherein the valve arrangement includes an outlet valve with an outlet valve closing element preloaded against an outlet valve seat counter to a pressure force acting from the pressure chamber;the valve arrangement includes a pressure-limiting valve with a pressure-limiting valve closing element preloaded against a pressure-limiting valve seat counter to a pressure force acting from the high-pressure region;the outlet valve and the pressure-limiting valve are mounted in two separate receptacle bores in a common valve housing;the two separate receptacle bores extend along a longitudinal axis of the valve housing from a junction surface at a first longitudinal end of the valve housing into the valve housing;the valve housing defines a central flow bore at a second longitudinal end arranged opposite the first ...

High-Pressure Fuel Supply Pump Having Electromagnetically-Driven Intake Valve

A high-pressure fuel supply pump includes a pressurizing chamber, a piston plunger, and an electromagnetically-driven intake valve mechanism. The piston plunger reciprocates within the pressurizing chamber. The electromagnetically-driven intake valve mechanism is provided at an inlet of the pressurizing chamber. The electromagnetically-driven intake valve mechanism includes an anchor which pulls a plunger rod, a fixed core which attracts the anchor, and a yoke in which inner peripheral part has the fixed core and the anchor. The fixed core is fixed to a bottom part of the yoke. A through hole is formed at a bottom part of the fixed core. 1. A high-pressure fuel supply pump , comprising:a pressurizing chamber;a piston plunger reciprocating within the pressurizing chamber; and the electromagnetically-driven intake valve mechanism includes an anchor which pulls a plunger rod, a fixed core which attracts the anchor, and a yoke in which inner peripheral part has the fixed core and the anchor,', 'the fixed core is fixed to a bottom part of the yoke, and', 'a through hole is formed at a bottom part of the fixed core., 'an electromagnetically-driven intake valve mechanism provided at an inlet of the pressurizing chamber, wherein'}2. The high-pressure fuel supply pump according to claim 1 , wherein the fixed core is press-fitted to an inner peripheral surface of a cylindrical space of the yoke.3. The high-pressure fuel supply pump according to claim 1 , further comprising:a spring biasing the plunger rod in such a direction that an intake valve is away from a valve seat.4. The high-pressure fuel supply pump according to claim 2 ,wherein a cylindrical hole is formed from a peripheral wall of a pump housing toward a pressurizing chamber, andwherein the yoke is inserted from an open end of the cylindrical hole of the pump housing into the inside part of the cylindrical hole.5. The high-pressure fuel supply pump according to claim 4 ,wherein a connecting end surface of the yoke ...

Fuel injector nozzle

A fuel injector includes a needle moveable along a central axis to initiate and terminate an injection event, and a nozzle body that receives the needle. The nozzle body includes a needle seat, a nozzle sac, and a passageway between the needle seat and the nozzle sac. The passageway defines a passageway inner surface. The nozzle sac has a curved, non-spherical profile and defines a sac inner surface that extends away from a distal end of the passageway inner surface.

Fuel Supply System And Fuel Distributor Block

A fuel supply system, having a low-pressure region, a high-pressure region, a pumping device, a low-pressure pump, and a high-pressure pump A pressure accumulator system is provided between the pumping device and injectors and has distributor units. Between the low-pressure pump and the high-pressure pump, a fuel distributor block is provided, which has a fuel leakage collection line for fuel leakage supplied to the fuel distributor block that has a choke and a bypass around the choke and a leakage sensor in the bypass. The choke is dimensioned such that all fuel leakage flows through the choke if the fuel leakage conducted via the fuel leakage collection line is less than a limit value, and fuel leakage flows through the bypass and across the leakage sensor if the fuel leakage conducted via the fuel leakage collection line is greater than the limit value.

Lever Device and a Fuel Injection Valve

A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess and having a coupling section coupled to a section of the housing, a drive element arranged in the housing recess and coupled to the at least one lever element to act upon the at least one lever element in the direction of a force-action axis, and an output element arranged in the housing recess and coupled to the at least one lever element such that the output element may be moved in the force-action axis direction by the at least one lever element. The coupling section of the lever element has at least one recess that defines at least two coupling section contact surfaces spaced apart from one another and resting against the housing section. 1. A lever device for a fuel injection valve , the lever device comprising:a housing which has having a housing recess,at least one lever element, each arranged in the housing recess and having a coupling portion coupled to a portion of the housing,a drive element arranged in the housing recess and coupled to the at least one lever element to act on the at least one lever element along a longitudinal axis, andan output element arranged in the housing recess and coupled to the at least one lever element such that the output element is moveable along the longitudinal axis by the at least one lever element,wherein for each lever element, the coupling portion has a recess that defines at least two contact faces of the coupling portion that are spaced apart from each other and lie on the portion of the housing.2. The lever device of claim 1 , wherein the at least two contact faces of the coupling portion comprise convex curved faces.3. (canceled)4. The lever device of claim 1 , wherein the portion of the housing comprises a disk shape.5. The lever device of claim 1 , wherein the portion of the housing comprises at least one protrusion extending toward the at least one lever element in the ...

VALVE BRIDGE ASSEMBLY HAVING REPLACEABLE SLEEVE INSERTS

A valve bridge assembly is disclosed for use with an internal combustion engine. The valve bridge assembly may have a valve bridge with a center portion, opposing lateral extensions, a central cavity formed within the center portion, and a bore formed within each of the opposing lateral extensions. The valve bridge assembly may also have a lash adjuster disposed within the central cavity, and a sleeve insert disposed within each bore of the opposing lateral extensions. Each sleeve insert may be configured to receive a corresponding valve stem. 1. A sleeve insert for a valve bridge assembly , comprising:a generally cylindrical body having an outer surface configured to be press-fitted into a corresponding bore in a valve bridge;a central bore formed within the generally cylindrical body and configured to receive a stem-end of a gas exchange valve; anda lubrication passage configured to connect a reservoir of the valve bridge with an end of the central bore.2. The sleeve insert of claim 1 , wherein a diameter of the lubrication passage is about one-third to one-fourth of a diameter of the central bore.3. The sleeve insert of claim 2 , wherein the lubrication passage extends in a direction that is generally axially aligned with the central bore.4. The sleeve insert of claim 3 , wherein a diameter of the lubrication passage is selected to be smaller than a diameter of an immediately adjacent opening in the valve bridge such that an end of the generally cylindrical body is visible through the immediately adjacent opening.5. The sleeve insert of claim 1 , wherein a hardness of the generally cylindrical body is selected to be about the same as a hardness of the gas exchange valve.6. A valve bridge assembly claim 1 , comprising:a valve bridge having a center portion, opposing lateral extensions, a central cavity formed within the center portion, and a bore formed within each of the opposing lateral extensions;a lash adjuster disposed within the central cavity; anda sleeve ...

Electromagnetic Fuel Injector

In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core. In an electromagnetic fuel injector of the present invention which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core , and a non-magnetic portion made of a metal material is provided between both end surfaces, in order to achieve this object, heat in a target member to be heat treated is generated by applying energy to a target member's surface which is different from a target member's surface that faces the movable iron core . More preferably, energy is applied to a surface different from a surface on a side that faces the movable iron core 110-. (canceled)11. An electromagnetic fuel injector that includes a valve body , a movable element that drives the valve body , and a coil for driving the movable element , the electromagnetic fuel injector comprising:a first stator that is disposed in such a way as to face the movable element;a non-magnetic portion that is disposed closer to an inner circumferential side than the first stator, and faces the movable element; anda second stator that is formed separately from the first stator, and is assembled with the first stator in a state where the second stator is in contact with the first stator in an axial direction.12. An electromagnetic fuel injector that includes a valve body , a movable element that drives the valve body , and a coil for driving the movable element , the electromagnetic fuel ...

FUEL INJECTION SYSTEM HAVING A FUEL-CONDUCTING COMPONENT, A FUEL INJECTION VALVE AND A CONNECTION ELEMENT

A connecting element connecting a fuel injection valve to a fuel-conducting component includes: a main body having a receptacle space into which a fuel connector of the fuel injection valve is introduced; and a fastening element. At least one opening is provided in a wall of the main body surrounding the receptacle space. The fastening element for fastening the fuel connector on the main body is brought into the receptacle space at least partly through the at least one opening. At least one elastic bearing element is provided, and the fastening element brought at least partly through the opening into the receptacle space is supported on the wall of the main body via the at least one elastic bearing element. 112-. (canceled)13. A connecting element for connecting a fuel injection valve to a fuel-conducting component , comprising:a main body having a receptacle space into which a fuel connector of the fuel injection valve is at least partly introduced, wherein at least one opening is provided in a wall of the main body surrounding the receptacle space;a fastening element configured to be brought into the receptacle space at least partly through the at least one opening for the fastening of the fuel connector on the main body; andat least one elastic bearing element, wherein the fastening element brought into the receptacle space partly through the at least one opening is supported on the wall of the main body via the at least one elastic bearing element.14. The connecting element as recited in claim 13 , wherein the at least one elastic bearing element is situated at the at least one opening provided in the wall of the main body.15. The connecting element as recited in claim 14 , wherein the at least one opening provided in the wall of the main body is formed by a first bore which extends from an outer side of the wall into the receptacle space claim 14 , and the at least one elastic bearing element is configured as a first sleeve-shaped elastic bearing element claim ...

Two stage valve with conical seat for flow shut-off and spool knife edge for metering flow control

A valve ( 100 ) comprises a barrel ( 104 ) having a central bore ( 110 ), an inlet ( 112 ), and an outlet ( 114, 116 ), and a spool ( 120 ) disposed for motion within the central bore, including a ball tip ( 128 ), a metering edge ( 130 ), and a bore ( 132 ). The spool is moveable between a closed position, wherein the ball tip engages a seat ( 142 ) to prevent fluid flow through the inlet and the metering edge is disposed in a lower chamber ( 148 ) of the central bore to prevent the fluid flow through the outlet, and an opened position, wherein the tip is spaced apart from the seat to permit fluid flow through the inlet and the spool bore into an upper chamber ( 154 ) of the central bore to equalize pressure on the spool, and the metering edge is disposed in a flow path of the outlet to permit fluid flow through the outlet.

INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE HAVING SUCH AN INJECTION SYSTEM

An injection system for an internal combustion engine including at least one injector and a high-pressure accumulator, which has a fluid connection to the at least one injector on the one side and has a fluid connection to a fuel reservoir via a high-pressure pump on the other side, wherein a suction throttle is associated with the high-pressure pump as a first pressure-setting element. At least two pressure control valves are provided, via which the high-pressure accumulator can be brought into fluid connection with the fuel reservoir. 110-. (canceled)11. An injection system for an internal combustion engine , comprising:at least one injector;a high-pressure accumulator which is fluidically connected at one side to the at least one injector and at another side via a high-pressure pump to a fuel reservoir;a suction throttle assigned to the high-pressure pump as a pressure setting element; andat least two pressure regulating valves by which the high-pressure accumulator is fluidically connectable to the fuel reservoir.12. The injection system according to claim 11 , further comprising a control unit operatively connected to the suction throttle and to the at least two pressure regulating valves claim 11 , wherein the injection system is configured to claim 11 ,a) in a normal operating mode, regulate a high pressure in the high-pressure accumulator by actuating the suction throttle as the pressure setting element, wherein, at least one first pressure regulating valve of the at least two pressure regulating valves is actuated in order to generate a high-pressure disturbance variable;b) in a first operation type of a protective operating mode, regulate the high pressure in the high-pressure accumulator by actuating the at least one first pressure regulating valve as pressure setting element; andc) in a second operation type of the protective operating mode, actuate at least one second pressure regulating valve of the at least two pressure regulating valves, which ...

Solenoid Actuator

A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, permanent magnet(s) positioned and orientated for latching the armature in at least the first position when the armature is in the first position and spring(s) arranged to bias the armature. The solenoid actuator can be operated to provide partial lift.

VALVE FOR METERING FLUID

A valve for metering a fluid, e.g., for the injection of fuel in a fuel-injection system of internal combustion engines, includes: an intake for the fluid; a metering orifice for the fluid; and an elongated, hollow-cylindrical flow channel leading from the intake to the metering orifice, the flow channel having an outer channel wall and an inner channel wall. In order to influence the hydraulic resonances resulting from the structural design in such a way that an excitation of critical structural modes caused by the installation is prevented, the flow channel is subdivided into at least two channel sections which are separated from one another, and a flow connection for the fluid is established between consecutive channel sections. 114-. (canceled)15. A valve for injecting fuel in a fuel-injection system of an internal combustion engine , comprising:an intake for the fluid;a metering orifice for the fluid; andan elongated, hollow-cylindrical flow channel extending from the intake to the metering orifice and having an outer and an inner channel wall, wherein the flow channel is subdivided into at least two channel sections separated from each other, and a throttled flow connection for the fluid is provided between consecutive channel sections in the flow direction.16. The valve as recited in claim 15 , wherein claim 15 , for the subdivision and flow connection claim 15 , at least one ring having an annular gap and a ring thickness which corresponds to the radial channel width of the flow channel is inserted in the flow channel at at least one channel location.17. The valve as recited in claim 16 , wherein the ring has one of a rectangular or circular cross-section.18. The valve as recited in claim 17 , wherein the ring is formed from one of a band or a wire having one of a rectangular or circular cross-section.19. The valve as recited in claim 16 , wherein the ring is fixed in place on at least one channel wall in the flow channel.20. The valve as recited in claim 19 ...

Fuel Injector and Nozzle Passages Therefor

A fuel injector for an internal combustion engine. The fuel injector has a needle and a nozzle that inter-relate with each other in assembly. Relative movement between the needle and nozzle bring the fuel injector between a closed state of operation and an open state of operation amid use of the fuel injector. The nozzle has one or more passages therein through which fuel is discharged. 1. A fuel injector , comprising:a needle; anda nozzle receiving the needle, the nozzle having an advanced-manufactured portion and having at least one passage for discharged fuel flow, the at least one passage being defined in the advanced-manufactured portion.2. The fuel injector of claim 1 , wherein the at least one passage has a passage wall that is defined in the advanced-manufactured portion.3. The fuel injector of claim 1 , wherein the at least one passage has an inlet end and an outlet end claim 1 , the inlet and outlet ends being defined in the advanced-manufactured portion.4. The fuel injector of claim 1 , wherein the at least one passage has a passage wall claim 1 , the passage wall having a non-linear longitudinal extent claim 1 , the at least one passage being defined at least in part by the non-linear longitudinal extent of the passage wall.5. The fuel injector of claim 4 , wherein the non-linear longitudinal extent of the passage wall constitutes a majority longitudinal extent of the passage wall.6. The fuel injector of claim 1 , wherein the at least one passage has a transverse cross-sectional profile that continuously varies in shape for a longitudinal extent of the at least one passage that constitutes a majority longitudinal extent of the at least one passage.7. The fuel injector of claim 6 , wherein the transverse cross-sectional profile of the at least one passage continuously varies in shape for a full longitudinal extent of the at least one passage.8. The fuel injector of claim 1 , wherein the at least one passage has an inlet end and an outlet end and is ...

CONTROLLING A FUEL INJECTION SOLENOID VALVE

A device and a method are provided for controlling a magnetic valve which has a coil and an armature which is displaceable by magnetic force, by means of which armature a closure element is displaceable for the purposes of injecting fuel into a combustion chamber, the method includes the steps of: energizing the coil with a voltage in accordance with a first voltage profile in order to generate a first electrical current through the coil; determining a first profile as a function of a first magnetic flux and the first current; identifying, in the first profile, a first characteristic of at least one first start of displacement at which the armature begins to displace the closure element, generating a second voltage profile and energizing the coil in accordance with the second voltage profile, such that, in a second profile, as a function of a second magnetic flux and a second current, a second characteristic of a second start of displacement is more similar to a reference characteristic than the first characteristic. 1. A method for controlling a magnetic valve , comprising the steps of:{'b': '3', 'providing a coil () for producing a magnetic force;'}{'b': '9', 'providing an armature () which is displaceable by the magnetic force generated by the coil;'}{'b': '11', 'providing a closure element () which is displaceable by the armature;'}{'b': 19', '23, 'providing a combustion chamber, the closure element being displaceable for the purposes of injecting fuel () into the combustion chamber ();'}{'b': 3', '84', '81', '3, 'energizing the coil () with a voltage () in accordance with a first voltage profile in order to generate a first electrical current () through the coil ();'}{'b': 31', '37, 'determining a first profile (, ) as a function of a first magnetic flux (Ψ) and the first current (i);'}{'b': 9', '11, 'identifying, in the first profile, a first characteristic of at least one first start of displacement (I) at which the armature () begins to displace the closure ...

ACCELERATOR APPARATUS FOR VEHICLE

An accelerator pedal is urged in an accelerator closing direction by a hysteresis spring and a return spring. A first increase rate is obtained by dividing an urging force of the hysteresis spring exerted in an accelerator-full-opening position of the accelerator pedal by the urging force of the hysteresis spring exerted in an accelerator-full-closing position of the accelerator pedal. A second increase rate is obtained by dividing an urging force of the return spring exerted in the accelerator-full-opening position of the accelerator pedal by the urging force of the return spring exerted in the accelerator-full-closing position of the accelerator pedal. The second increase rate is smaller than the first increase rate. 1. An accelerator apparatus for a vehicle , comprising:a support member that is installable to a body of the vehicle;an accelerator pedal that is supported by the support member, wherein the accelerator pedal is rotatable in an accelerator opening direction when a pedal force is applied to the accelerator pedal, and the accelerator pedal is rotatable in an accelerator closing direction, which is opposite from the accelerator opening direction, when the pedal force applied to the accelerator pedal is reduced;a rotational angle sensing device that senses a rotational angle of the accelerator pedal relative to the support member;a resistance force application device that applies a rotational resistance force to the accelerator pedal, wherein the rotational resistance force, which is applied from the resistance force application device to the accelerator pedal, is increased in response to an increase in a rotational angle of the accelerator pedal in the accelerator opening direction from an accelerator-full-closing position of the accelerator pedal;a first urging device that exerts an urging force, which is conducted to the accelerator pedal through the resistance force application device to urge the accelerator pedal in the accelerator closing direction; ...

VALVE ASSEMBLY HAVING ELECTRICAL ACTUATOR WITH BALANCED STATOR

A valve assembly for a pump includes an electrical actuator having a stator and an armature. The stator includes an annular outer stator portion and an annular inner stator portion, and an annular channel formed radially between the outer stator portion and the inner stator portion. A first radial channel extending through the annular outer stator portion between an outer surface of the outer stator portion and the annular channel, and at least one second opening in the annular outer stator portion results in magnetic symmetry of the stator . Upon activating the electrical actuator, the attraction of the armature towards the stator is uniform thus displacing fluid between the stator and armature in a uniform manner and to avoid high velocity, potentially damaging fluid flow. 1. A valve assembly comprising:a valve member operatively associated with a valve seat, the valve member being movable along a central axis between a first open position at which the valve member is spaced from the valve seat and a second closed position at which the valve member engages the valve seat to seal an opening of the valve assembly;an electrical actuator including a stator, and an armature coupled to the valve member;the stator includes an annular outer stator portion and an annular inner stator portion, and an annular channel formed radially between the outer stator portion and the inner stator portion, a first radial channel extending through the annular outer stator portion between an outer surface of the outer stator portion and the annular channel, and at least one second opening disposed in the annular outer stator portion on an opposite half of the stator from the first radial channel, the stator being magnetically symmetrical along a line bisecting the first radial channel and perpendicular to the central axis;a winding and terminal assembly, the winding and terminal assembly comprises an electrically conductive winding disposed within the annular channel and between the outer ...

Improved fuel system for diesel type engines using carbonaceous aqueous slurry fuels

The present invention provides an improved fuel injection system and related method for controlling fuel heating and circulation in diesel type engines configured to use carbonaceous aqueous slurry fuels. The fuel injection system comprises: at least one fuel injector including an injector nozzle through which fuel is atomised and a fuel injector pump for pressurising fuel for supply to the injector nozzle; and a controlled bleed valve fluidly connected to each fuel injector and positioned to allow a controlled amount of carbonaceous aqueous slurry fuel to flow from the fuel injector.

LOW IMPACT NOISE SOLENOID VALVE

In some examples, a static part includes a static body and a first cylindrical extension extending from the static body, the first cylindrical extension including an open end with a cylindrical inner surface having a first diameter. A moveable part is moveable toward the static part by the magnetic flux of a solenoid. The moveable part may include a moveable body and a second cylindrical extension extending from the moveable body, the second cylindrical extension including a cylindrical outer surface having a second diameter, smaller than the first diameter, to enable the cylindrical outer surface to move within the open end. The second diameter is sized for the cylindrical outer surface to pass adjacent to the cylindrical inner surface to enable passage of a portion of the magnetic flux radially to reduce an energy of impact between the moveable part and the static part. 1. A valve comprising:a valve mechanism;a solenoid coil able to be activated to generate a magnetic flux;a static part located at least partially within the solenoid coil, the static part including a static body and a first cylindrical extension extending from the static body, the first cylindrical extension including an open end with a cylindrical inner surface having a first diameter, the first cylindrical extension further including an inner groove located between the cylindrical inner surface and the static body, the inner groove having a second diameter, wherein the second diameter of the inner groove is larger than the first diameter of the cylindrical inner surface; anda moveable part being moveable toward the static part by the magnetic flux in response to activation of the solenoid coil for changing a condition of the valve mechanism, the moveable part including a moveable body and a second cylindrical extension extending from the moveable body, the second cylindrical extension including a cylindrical outer surface having a third diameter and an outer groove located between the cylindrical ...

Fuel injection device

Movement of a valve body in an unspecified direction due to a minute clearance existing between a valve body and a guide changes the flow of fuel flowing into injection holes every injection, thereby leading to variation in respective beams of spray from the injection holes and the flow rate of injection between the injection holes. Provided are a valve body that sits on or separates from a seat; a plurality of guides that slidably guide the valve body; and a plurality of flow channel portions each formed between each guide adjacent circumferentially. Then, among the plurality of flow channel portions, the cross-sectional area of the first flow channel portion on a horizontal plane orthogonal to the central axis of the valve body is smaller than each of the cross-sectional areas of the remaining flow channel portions on the horizontal plane.

SOLENOID-ACTUATED VALVE AND HYDRAULIC CONTROL MODULE INCLUDING THE SAME

A solenoid-actuated valve includes a solenoid portion extending along a longitudinal axis. The solenoid portion includes a solenoid housing defining a solenoid interior, a coil, and an armature, with the armature being moveable along the longitudinal axis in response to energization of the coil. The solenoid-actuated valve also includes a valve portion coupled to the solenoid portion. The valve portion includes a valve member moveable by the armature. The solenoid-actuated valve further includes a valve filter disposed in the solenoid interior and/or coupled to the solenoid housing and configured to separate the solenoid interior from a hydraulic circuit when the valve portion is coupled to a valve housing for allowing fluid to flow into and out of the solenoid interior upon actuation of the armature. 1. A solenoid-actuated valve comprising: a solenoid housing disposed about said longitudinal axis and defining a solenoid interior,', 'a coil disposed about said longitudinal axis and in said solenoid interior, and', 'an armature disposed about said longitudinal axis and in said solenoid interior and between said longitudinal axis and said coil, with said armature being moveable along said longitudinal axis in response to energization of said coil;, 'a solenoid portion extending along a longitudinal axis, with said solenoid portion comprising,'} a valve member moveable by said armature for controlling a flow of hydraulic fluid through a hydraulic circuit, and', 'a valve body disposed about said longitudinal axis and defining a fluid passage, with said valve member disposed in said fluid passage for controlling the flow of hydraulic fluid through the hydraulic circuit; and, 'a valve portion coupled to said solenoid portion and comprising,'}a valve filter disposed in said solenoid interior and/or coupled to said solenoid housing and configured to separate said solenoid interior from a hydraulic circuit when said valve portion is coupled to a valve housing for allowing ...

ASSEMBLY HAVING A HIGH-PRESSURE PUMP AND A CONTROL DEVICE ARRANGED UPSTREAM OF THE HIGH-PRESSURE PUMP

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a high-pressure pump having a pump element, a regulating device positioned upstream of the high-pressure pump, a fuel channel defined between an inflow side of the regulating device and the pump element, and a safety device, actuatable to reduce a through-flowable cross section of the fuel channel. 112.-. (canceled)13. An apparatus comprising:a high-pressure pump having a pump element;a regulating device positioned upstream of the high-pressure pump;a fuel channel defined between an inflow side of the regulating device and the pump element; anda safety device, actuatable to reduce a through-flowable cross section of the fuel channel.14. The apparatus of claim 13 , wherein the safety device is configured to be actuated to set (1) a defined through-flowable cross section at the fuel channel claim 13 , (2) a defined residual delivery rate of the high-pressure pump claim 13 , or (3) both.15. The apparatus of claim 14 , wherein the safety device is configured to claim 14 , upon an actuation claim 14 , displace an engagement element claim 14 , whereby an action on a shut-off member for reducing a present through-flowable cross section of the fuel channel occurs.16. The apparatus of claim 14 , wherein the safety device is configured not to influence a through-flowable cross section of the fuel channel in the absence of an actuation.17. The apparatus of claim 13 , wherein the safety device is configured to be actuated to reduce a present through-flowable cross section of the fuel channel by action on a shut-off member.18. The apparatus of claim 17 , wherein the shut-off member is actuatable to be displaced relative to the fuel channel.19. The apparatus of claim 17 , wherein the safety device is configured for an auxiliary media actuation claim 17 , and the shut-off member is configured to actuate based on the auxiliary media actuation.20. The apparatus of claim 17 , ...

FUEL INJECTOR NEEDLE SLEEVE

A fuel injector for a fuel injection system includes a nozzle body defining a nozzle body chamber, a needle movably received within the nozzle body chamber for movement between a seated position and a raised position, and a needle sleeve at least partially surrounding the needle and at least partially defining a control volume. The needle moves from the seated position to the raised position in response to a pressure differential between the control volume and the nozzle body chamber. When the needle is in the seated position clearance exists between the needle sleeve and the needle thereby permitting fuel flow between the control volume and the nozzle body chamber, and when the needle is in the raised position, the needle sleeve deforms to reduce the clearance and restrict fuel flow between the control volume and the nozzle body chamber. 1. A fuel injector comprising:a nozzle body defining a nozzle body chamber;a needle movably received within the nozzle body chamber for movement between a seated position and a raised position; anda needle sleeve at least partially surrounding the needle and at least partially defining a control volume, wherein the needle moves from the seated position to the raised position in response to a pressure differential between the control volume and the nozzle body chamber, wherein when the needle is in the seated position clearance exists between the needle sleeve and the needle thereby permitting fuel flow between the control volume and the nozzle body chamber, and wherein when the needle is in the raised position, the needle sleeve deforms to reduce the clearance and restrict fuel flow between the control volume and the nozzle body chamber.2. The fuel injector of claim 1 , wherein the needle sleeve deforms in response to the pressure differential between the control volume and the nozzle body chamber.3. The fuel injector of claim 1 , wherein the needle sleeve is substantially annular and deforms in a generally radially inward ...

ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE

An electronically controlled fuel injection valve can control the time to inject fuel and the amount of fuel to be injected in response to a control signal independently from the operating condition of an engine unlike a traditional mechanical fuel injection valve. The electronically controlled fuel injection valve employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection, has a simple structure making it easy to assemble, replace and precisely machine parts, and has a simple flow path structure which facilitates fabrication. 1. An electronically controlled fuel injection valve comprising:a valve body having defined therein a first flow path along which fuel is fed through a fuel supply port, and having a control valve housing in an upper portion thereof;a nozzle part coupled to a lower portion of the valve body, and having defined therein a nozzle chamber which is filled with fuel that is supplied via the first flow path so that a needle disposed therein is pressed upward, whereby the needle is lifted up so that fuel is injected;a needle driving part disposed inside the valve body, the needle driving part driving the needle of the nozzle part;an upper pressure chamber formed above the needle driving part, the upper pressure chamber creating a pressure when the upper pressure chamber is filled with fuel fed through the fuel supply port, the pressure pressing the needle driving part in a downward direction;a lower pressure chamber positioned below the upper pressure chamber, the lower pressure chamber creating a pressure when the lower pressure chamber is filled up with fuel, the pressure pressing the needle driving part in an upward direction;a second flow path formed inside the needle pressing part via the control valve housing, the second flow path being connected to the ...

FLUID INJECTION DEVICE

A fluid injection device for a combustion engine comprising a nozzle body, a first nozzle needle being arranged inside the nozzle body and configured as a hollow needle, and a second nozzle needle being arranged inside the first nozzle needle, wherein the first nozzle needle and the second nozzle needle are axially displaceable. The second nozzle needle constitutes the valve needle of a solenoid valve, and the second nozzle needle is configured as an at least partially pressure-compensated nozzle needle so that an axial movement of the second nozzle needle can be controlled by the solenoid valve without hydraulic transmission. 1. A fluid injection device for a combustion engine comprising a nozzle body , a first nozzle needle being arranged inside the nozzle body , the first nozzle needle being configured as a hollow needle , and a second nozzle needle being arranged inside the first nozzle needle , the first nozzle needle and the second nozzle needle being axially displaceable , wherein the second nozzle needle constitutes the valve needle of a solenoid valve , and wherein the second nozzle needle is configured as an at least partially pressure-compensated nozzle needle so that an axial movement of the second nozzle needle can be controlled by the solenoid valve without hydraulic transmission.2. The fluid injection device according to claim 1 , wherein the axial movement of the first nozzle needle is produced by a rise in pressure and/or fall in pressure in a control chamber claim 1 , and wherein a pressure inside the control chamber being adjustable by at least one inlet restrictor and at least one outlet restrictor.3. The fluid injection device according to claim 2 , wherein the first nozzle needle and the second nozzle needle can be controlled separately from one another.4. The fluid injection device according to claim 1 , wherein the first nozzle needle controls a series of first injection holes and the second nozzle needle controls a series of second injection ...

High-Pressure Fuel Supply Pump

To increase a valve-opening pressure at which a pressure relief valve is opened in order to deal with a higher pressure of the fuel, a large pressure relief valve is installed in a high-pressure fuel supply pump. This upsizes the high-pressure fuel supply pump. A pressure relief valve is installed in a discharge joint. This can provide a high-pressure fuel supply pump that is not large too much and sufficiently performs a relief function by efficiently using the excessive space in the pump even when the fuel pressure is increased.

VALVE FOR METERING A FLOWING MEDIUM

A valve for metering a flowing medium, particularly a fluid, which has a filter situated in the medium stream and has a filter ring that includes a plurality of filter pores and a support element supporting the filter ring on its outgoing flow side. The support element is developed as a radially elastic support ring having a plurality of through holes, which rests against the filter ring with radial prestressing. 115-. (canceled)16. A valve for metering a flowing medium , comprising:a filter situated in a medium stream flowing from an inlet to a metering opening;a filter ring containing a plurality of filter pores having an outer incident flow side pointing towards the inlet and an inner outgoing flow side pointing towards the metering opening; anda supporting body supporting the filter ring on its flow-away side, wherein the supporting body is a radially elastic support ring having a plurality of through holes, which rests against the filter ring with radial prestressing.17. The valve as recited in claim 16 , wherein an outer diameter of the support ring is larger than an inner diameter of the filter ring by a measure which produces the prestressing.18. The valve as recited in claim 16 , wherein a cross section of the through holes in the support ring is many times greater than the pore size of the filter pores in the filter ring.19. The valve as recited in claim 18 , wherein the filter ring is made of a fine-meshed filter web and the support ring is made of a coarse-meshed metal web.20. The valve as recited in claim 18 , wherein the filter ring is made of a fine-meshed filter web and the support ring is made of a perforated sheet metal jacket or plastic jacket.21. The valve as recited in claim 16 , wherein the filter has a rigid cage enclosing the filter ring having two end rings that are at an axial distance from each other and a plurality of axial crosspieces that connect the end rings to each other and are at a distance from one another in the circumferential ...

DETERMINING A LIFT OF A SOLENOID VALVE

A device and a method are provided for determining a stroke of an armature of a magnetic valve which has a coil and the armature is displaceable by magnetic force, including: providing at least one reference data set which includes a magnitude of a current through the coil and a magnitude of the magnetic flux in the case of a known magnitude of the stroke; generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element coupled to the armature; determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; and determining the magnitude of the stroke based upon the determined magnitude of the magnetic flux and the reference data set. 1. A method for determining a stroke of an armature of a magnetic valve which has a coil and the armature which is displaceable by magnetic force , the method comprising:providing at least one reference data set which comprises a magnitude of a current through the coil and a magnitude of magnetic flux of the coil in the case of a known magnitude of the stroke;generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element;determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; anddetermining the magnitude of the stroke on the basis of the determined magnitude of the magnetic flux and the reference data set.2. The method as claimed in claim 1 , wherein the reference data set is representative of a curve in a coordinate system in which the current through the coil is plotted on one axis and the magnetic flux is plotted on another axis.3. The method as claimed in claim 1 , ...

FLOW CONTROL DEVICE

Provided is a fuel injection device that can secure strength capable of withstanding high fuel pressure. In a fuel injection device in which a fuel boundary includes two or more components, two components are press-fitted with an inner diameter and an outer diameter and are brought into contact at a butting surface, abutting welding is performed from a direction nearly parallel to the butting surface, an inner diameter side corner portion of the butting surface of a component to be fitted and press-fitted on an inner diameter side is chamfered longer in a direction perpendicular to the butting surface to increase a welding coupling length than a butting length, welding coupling length is less than welding depth, weld penetration depth is not less than material thickness, and the center of the weld is on a base material side, the outer diameter of which is larger than a joining face. 1. A flow control device including a first component and a second component having an opposing surface facing one surface of the first component , comprising:a butting surface that makes mutual contact between the one surface of the first component and the opposing surface of the second component; anda weld portion formed along the butting surface on the butting surface of the first component and the second component, whereinan air gap is formed by the weld portion, the first component, and the second component, anda welding direction tip end portion of the weld portion is positioned on a welding direction side with respect to the welding direction tip end portion of the butting surface.2. The flow control device according to claim 1 , whereinthe welding direction tip end portion of the weld portion is positioned on a welding direction side with respect to a welding direction tip end portion of the air gap.3. The flow control device according to claim 1 , whereina central portion in a direction orthogonal to a welding direction of the weld portion is positioned on a butting direction ...

Valve Assembly for a Fuel Injection System, and Fuel Injection System

A valve arrangement for a fuel injection system includes a first valve unit () having a first flow cross section (Q) and a second valve unit () having a second flow cross-section Q). The second valve unit includes at least two single valves (), each of which has a single valve flow cross-section Q). The second flow cross-section (Q) is formed by a sum of the single valve flow cross-sections (Q). A fuel injection system () incorporates such a valve arrangement (). 1. A valve arrangement for a fuel injection system of an internal combustion engine , wherein:the valve arrangement comprises a valve housing, a first valve unit having a first flow cross section, and a second valve unit having a second flow cross-section;the first valve unit and the second valve unit are received in the valve housing and are connected antiparallel to one another;the second valve unit comprises at least two mutually hydraulically separate, parallel-connected single valves which each have a respective single valve flow cross-section; andthe second flow cross-section of the second valve unit is formed by a sum of the single valve flow cross-sections of the single valves.2. The valve arrangement according to claim 1 , wherein the respective single valve flow cross-sections are different from one another claim 1 , and/or respective opening pressures of the single valves are different from one another.3. The valve arrangement according to claim 1 , wherein the first valve unit comprises only one single valve claim 1 , and/or the second valve unit comprises from three to five of the single valves.4. The valve arrangement according to claim 1 , wherein the single valves of the second valve unit and the first valve unit are arranged symmetrically around a valve housing longitudinal axis of the valve housing on a cross-sectional surface which is perpendicular to the valve housing longitudinal axis.5. The valve arrangement according to claim 1 , wherein the single valves of the second valve unit are ...

FUEL INJECTION VALVE

In a fuel injection valve having a nozzle hole plate wherein a nozzle hole is formed, the nozzle hole is formed with a flow path cross-section having an oval shape that has long axes and short axes, and the nozzle hole is formed having a tapered shape in which a flow path sectional area becomes larger from an entry-side open end portion toward an exit-side open end portion. The nozzle hole is formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in an oblique section along the short axes of the entry-side open end portion and the exit-side open end portion, is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a longitudinal section along the long axes of the entry-side open end portion and the exit-side open end portion. 1. A fuel injection valve comprising:a valve body that includes a valve hole;a valve element provided in the-valve body so as to open and close the valve hole; anda nozzle hole plate provided in the valve body so as to cover the valve hole, a nozzle hole that extends through in a plate thickness direction being formed in the nozzle hole plate, a flow path cross-section of the nozzle hole being formed such that an entry-side open end portion that is positioned on a valve body side is formed in an oval shape having a long axis and a short axis, in a plan view with respect to the nozzle hole plate, and the nozzle hole being formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the short axis of the entry-side open end portion is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the long axis of the entry-side open end portion.2. The fuel injection valve according to claim 1 , whereinthe flow path cross-section of the nozzle hole is formed in a tapered shape such that ...

FUEL SYSTEM FOR AN INTERNAL COMBUSTION PISTON ENGINE AND A METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE

A fuel system for an internal combustion piston engine includes a first fuel section and a second fuel section in which the first fuel section has a first inlet line connecting respective inlets of the injectors to a tank, and the second fuel section has a second inlet line connecting respective inlets of the injectors to a fuel tank. The second fuel section is arranged to inject the fuel into the combustion chambers for igniting the first fuel, in which first fuel section the inlet line extends from a high pressure pump to the respective injectors, and a fuel return line of the first fuel section extends from each of the injectors to the tank. The fuel return line has a pressure increasing means arranged to the fuel return line of the first fuel section between the injectors and the tank. 1. A fuel system for an internal combustion piston engine comprising:a first fuel section and a second fuel section in which the first fuel section comprises an first inlet line connecting respective inlets of the injectors to a tank, and the second fuel section comprises a second inlet line connecting respective inlets of the injectors to a fuel tank,the second fuel section being arranged to inject the fuel into the combustion chambers for igniting the first fuel, in which first fuel section the inlet line extends from a high pressure pump to the respective injectors, and a fuel return line of the first fuel section extends from each of the injectors to the tank, andthe fuel return line comprising a pressure increasing means arranged to the fuel return line of the first fuel section between the injectors and the tank.2. A fuel system for an internal combustion engine according to claim 1 , wherein the pressure increasing means is arranged to maintain a desired fuel pressure in the tank of the first fuel section and the fuel system comprises with a control system adapted to control the operation of the pressure increasing means.3. A fuel system for an internal combustion engine ...

Fuel meter protected from icing

A fuel metering unit including a movable element including at least one fuel passage section opening upstream towards a fuel supply conduit and opening downstream towards a conduit of use through a metering slot with a flared profile having a narrow passage section flaring as far as a wide passage section, the movable element being able to be moved with respect to a fixed element between a low flow rate position in which the metering slot is for a large part obstructed and a high flow rate position in which the metering slot is for a large part exposed, the metering slot being made in the fixed element or in the movable element and its obstruction being obtained by covering the slot with a wall of the movable element or of the fixed element.

FUEL INJECTOR AND METHOD FOR CONTROLLING THE SAME

A fuel injector includes a nozzle having at least one nozzle outlet. A valve needle is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through the at least one nozzle outlet. The movement of the nozzle needle is controlled by fuel pressure within a control chamber. The injector has first and second nozzle control valves for controlling fuel flow into and out of the control chamber to pressurise and depressurise the control chamber, respectively. The first nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain or to place the control chamber in fluid communication with a high pressure supply line. The second nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain. 1. A fuel injector for use in delivering fuel to an internal combustion engine , the fuel injector comprising:a nozzle having a valve needle which is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through at least one nozzle outlet, whereby movement of the valve needle is controlled by fuel pressure within a control chamber; andfirst and second nozzle control valves for controlling fuel flow into and out of the control chamber to pressurise and depressurise the control chamber;wherein said first nozzle control valve is operable selectively to place the control chamber in fluid communication with a fuel drain;said first nozzle control valve also being operable selectively to place the control chamber in fluid communication with a high pressure supply line;said second nozzle control valve being operable selectively to place the control chamber in fluid communication with a fuel drain; andsaid second nozzle control valve is operable to place the control chamber in fluid communication with the ...

High-Pressure Fuel Supply Pump

A fuel supply pump includes a pressurizing chamber, a high-pressure path, and a valve unit. The valve unit includes an outlet valve which is configured to open to allow fuel in the pressurizing chamber to flow to the high-pressure path when fuel pressure in the pressurizing chamber becomes higher than a first predetermined pressure. The valve unit also includes a pressure relief valve which is configured to open to allow fuel in the high-pressure path to return to the pressurizing chamber when fuel pressure in the high-pressure path becomes higher than a second predetermined pressure. The valve unit also includes a valve seat member in which a relief path and a plurality of outlet paths are formed, wherein a first end of the relief path opens on a relief valve seat for the pressure relief valve, and respective first ends of the plurality of outlet paths open on an outlet valve seat for the outlet valve. 1. A fuel supply pump comprising:a pressurizing chamber which is formed in a pump body;a high-pressure path which is provided on a discharge side of the pressurizing chamber; and an outlet valve which is configured to open to allow fuel in the pressurizing chamber to flow to the high-pressure path when fuel pressure in the pressurizing chamber becomes higher than a first predetermined pressure;', 'a pressure relief valve which is configured to open to allow fuel in the high-pressure path to return to the pressurizing chamber when fuel pressure in the high-pressure path becomes higher than a second predetermined pressure; and', 'a valve seat member in which a relief path and a plurality of outlet paths are formed, wherein a first end of the relief path opens on a relief valve seat for the pressure relief valve, and respective first ends of the plurality of outlet paths open on an outlet valve seat for the outlet valve., 'a valve unit which is arranged between the pressurizing chamber and the high-pressure path, the valve unit having2. The fuel supply pump according to ...

Dual Fuel Injection Valve

A dual fuel injection valve with concentric needles comprises an inner needle and an outer needle surrounding the inner needle, both needles being located inside the injection valve body. The valve is provided with a first set and a second set of orifices for separately injecting two different fuels directly into the combustion chamber of an internal combustion engine. The outer needle is fixed against rotation with respect to the injection valve body such that an interlace angle between the centerlines of the first series of orifices and second series of orifices is set at different predetermined angles to reduce methane emissions. 1. A dual fuel injection valve for separately injecting two different fuels into a combustion chamber of an internal combustion engine comprising:(a) a valve body;(b) a hollow outer needle disposed within said valve body, said outer needle having a longitudinal axis along which it is movable between a closed position and an open position for injecting a first fuel directly into said combustion chamber through a first series of orifices located at an end of said valve body which faces said combustion chamber;(c) an inner needle disposed within said outer needle, said inner needle having a longitudinal axis along which it is movable between a closed position and an open position for injecting a second fuel directly into said combustion chamber through a second series of orifices located at an end of said outer needle which faces said combustion chamber;(d) an actuator assembly operative to move said inner needle and said outer needle between their respective closed and open positions to separately inject an amount of pilot fuel and an amount of gaseous fuel into said combustion chamber, and(e) a keying member disposed between said outer needle and said valve body in an elongated channel formed by a recess in one of an outer surface of said outer needle and an inner surface of said valve body, said keying member being held in a fixed radial ...

Method for controlling and regulating an internal combustion engine

Proposed is a method for controlling and regulating an internal combustion engine ( 1 ) having a common rail system and having a passive pressure limiting valve ( 11 ) for discharging fuel out of a rail ( 6 ) into the fuel tank ( 2 ), in which method, in a first stage, the pressure limiting valve ( 11 ) is set as open when the rail pressure, proceeding from a steady-state rail pressure, exceeds a first threshold value and subsequently falls below a second threshold value within a first critical time, wherein the first threshold value characterizes a higher pressure level than the steady-state rail pressure and the second threshold value characterizes a lower pressure level than the first threshold value, and in which method the opening duration of the opened pressure limiting valve ( 11 ) is monitored.

High pressure pump for vehicle

A high pressure pump includes a housing with a chamber formed inside and a flow control valve and a discharge check valve installed in the chamber; a piston installed to operate up and down in an assembly hall formed in the housing to compress fuel in the chamber to a high pressure; a cylinder forming a gap between an inner circumferential surface and the piston and guiding reciprocation of the piston; and a support member seated on a stepped surface of the housing to surround an outside of the cylinder and configured to elastically support the housing and the cylinder, thereby reducing friction while preventing fuel leakage between the piston and the cylinder.

FUEL FLOW LIMITER ASSEMBLY HAVING INTEGRAL FUEL FILTER AND FUEL SYSTEM USING SAME

A fuel flow limiter assembly includes a limiter body forming a central bore, and including a shutoff piston within the central bore having a closing hydraulic surface exposed to a fluid pressure of the fuel inlet, and being movable from an open position, to a closed position based on a fuel pressure drop from a fuel inlet to a fuel outlet in the limiter assembly. A fuel filter is resident in the limiter assembly and supported in a connector coupled to the limiter body. The fuel filter is elongate and projects from the connector into a fuel flow path from the fuel inlet to the fuel outlet. 1. A fuel flow limiter assembly comprising:a limiter body defining a longitudinal axis extending between a first axial body end and a second axial body end, and including an axially extending central bore, and a fuel inlet formed in the first axial body end and fluidly connected to the central bore;a connector coupled to the second axial body end, and including a fuel outlet fluidly connected to the central bore and a connector seat adjacent to the fuel outlet and extending circumferentially around the fuel outlet;a shutoff piston within the central bore and including a closing hydraulic surface exposed to a fluid pressure of the fuel inlet, and a sealing surface, and the shutoff piston being movable within the central bore in a direction of the second axial body end from an open position, to a closed position where the sealing surface is in contact with the connector to block fuel flow from the fuel inlet to the fuel outlet;a biasing spring trapped between the shutoff piston and the connector and biasing the shutoff piston toward the open position; anda fuel filter supported in the connector, and projecting from the connector in the direction of the first axial body end in a fuel flow path from the fuel inlet to the fuel outlet.2. The fuel flow limiter assembly of wherein the fuel filter includes an elongate filter body having an open outlet end supported in the connector claim 1 ...

Valve for Injecting Gas

A valve for injecting fuel in an internal combustion engine includes a housing having an inflow section and an outflow section for the fuel and a drive section situated between the inflow section and the outflow section. A first control element is provided which is assigned to the inflow section and which enables or prevents the supply of the fuel in a manner dependent on a switching position of the first control element. A second control element is provided which is assigned to the outflow section and which enables or prevents the discharge of the fuel in a manner dependent on a switching position of the second control element. An actuating drive is provided which is arranged in the drive section and which is coupled to both control elements such that the control elements can be moved into an open position independently of one another. 1. A valve for injecting gaseous fuels for an internal combustion engine , the valve comprising:a housing including an inflow portion and an outflow portion for the gaseous fuel, and a drive portion located between the inflow portion and the outflow portion,a first control element assigned to the inflow portion and configured to enable or prevent the delivery of the gaseous fuel depending on a switching position of the first control element,a second control element assigned to the outflow portion and configured to enable or prevent the delivery of the gaseous fuel depending on a switching position of the second control element, andan actuating drive arranged in the drive portion and configured to open the first and second control elements independently of one another.2. The valve of claim 1 , wherein the actuating drive comprises a solenoid coil claim 1 , arranged in a chamber of the drive portion and having a central opening.3. The valve of claim 2 , wherein the first control element comprises a cylindrical bodywherein an armature plate comprising ferromagnetic material is formed on a free end of the cylindrical body facing the ...

SOLENOID VALVE

The invention relates to a solenoid valve having an actuator body (), in which a magnet coil () that interacts with a magnet core () is arranged and which interacts with an armature () that can be moved relative to the magnet core between two end positions and is acted upon by the spring force of an armature spring () in a movement direction pointing away from the magnet core (). The magnet core and the armature have stop surfaces () which are interrupted by a recess () that receives the armature spring. According to the invention, a solenoid valve is provided which is improved with respect to the function of the solenoid valve and the stress on the stop surfaces () that causes wear. This is achieved in that the magnet core () and/or the armature () have/has a design (), in particular a spherical or toroidal design, which reduces the stress on the edges in the region of the stop surfaces (). 11715161416131616141818291316143031321818a,ba,b. A solenoid valve comprising an actuator body () , having arranged therein a magnet coil () which interacts with a magnet core () , and which interacts with an armature () that can be moved relative to the magnet core () between two end positions , wherein the armature is acted upon by the spring force of an armature spring () in a movement direction pointing away from the magnet core () , and wherein the magnet core () and the armature () have stop surfaces () which are interrupted by a recess () that receives the armature spring () , characterized in that at least one of the magnet core () and the armature () has a rounded configuration ( , , ) which reduces a stress on edges in a region of the stop surfaces ().21614301818a,b. The solenoid valve as claimed in claim 1 , characterized in that the magnet core () and/or the armature () has a convex configuration () in the region of at least one stopping surface ().31614311818a,b. The solenoid valve as claimed in claim 1 , characterized in that the magnet core () and/or the armature ...

PRESSURE REGULATING VALVE

A pressure regulating valve includes a device body and an actuator. The device body includes a valve seat member, a valve, which is capable of closing the first opening of the valve seat member, an urging member, which urges the valve toward the valve seat member, a piston arranged opposite to the valve across the valve seat member, an actuator, which adjusts the position of the piston, and a protrusion provided on at least one of the piston and the valve. When the tip end of the protrusion comes into contact with the piston or the valve, the second opening of the second fluid passage is closed. When the tip end of the protrusion is not in contact with any of the piston and the valve and the second opening is opened, the second fluid passage is in communication with the pressure regulation chamber. 1. A pressure regulating valve , comprising: an inflow portion into which fluid flows;', 'a valve chamber that is in communication with the inflow portion;', 'an outflow portion out of which the fluid flows;', 'a pressure regulation chamber that is in communication with the outflow portion; and', 'a valve seat member, which separates the valve chamber and the pressure regulation chamber from each other;, 'a device body includinga valve disposed in the valve chamber, wherein the valve is capable of closing a first opening of the valve seat member;an urging member, which applies an urging force to the valve in a direction toward the valve seat member;a piston arranged opposite to the valve across the valve seat member;an actuator, which adjusts a position of the piston in accordance with a power supply state;a first fluid passage, which draws the fluid in the valve chamber into the pressure regulation chamber, wherein the first fluid passage is connected with the pressure regulation chamber via the first opening in a state where the valve is separated from the valve seat member;a second fluid passage provided in the valve, wherein the second fluid passage includes a second ...

OVERMOLDED COMPONENT WITH A LABYRINTH SEAL

A component having an insert part and an overmold that extends at least partly around the insert part, the insert part having at least one groove and the groove having an undercut at at least one edge, and the overmold at least partly filling the groove. 111-. (canceled)12. A component , comprising:an insert part; andan overmold that extends at least partly around the insert part;wherein the insert part has at least one groove, wherein the groove has an undercut at at least one edge, and wherein the overmold at least partly fills the groove.13. The component of claim 12 , wherein the groove is realized with a spiral shape.14. The component of claim 12 , wherein the groove is realized so as to be closed on itself.15. The component of claim 12 , wherein at least one of the edges of the groove forms claim 12 , in a sectional view claim 12 , an acute angle with a floor surface of the groove.16. The component of claim 12 , wherein the groove is completely filled by the overmold.17. The component of claim 12 , wherein the insert part is a turned part.18. The component of claim 12 , wherein the insert part is made from a metallic material claim 12 , and/or the overmold is made of plastic.19. A method for producing an overmolded component claim 12 , the method comprising:providing an insert part;making a groove having an undercut at at least one edge in a jacket surface of the insert part; andovermolding at least a region of the insert part with a further material, so that the material at least partly fills the groove.20. The method of claim 19 , wherein the groove is made in the jacket surface of the insert part with a spiral shape or with an annular shape.21. The method of claim 19 , wherein the groove is made with a tool having a blade offset of one or more groove spacings.22. A fuel injection device for an internal combustion engine claim 19 , comprising: an insert part; and', 'an overmold that extends at least partly around the insert part;', 'wherein the insert part ...

VALVE ACTUATOR ASSEMBLY WITH CURRENT TRIM AND FUEL INJECTOR USING SAME

A valve actuator assembly includes a valve member movable between a first seat and a second seat. A spring member biases the valve member toward the first seat, and an actuator is positioned to move the valve member toward the second seat against the bias of the spring member when the actuator is energized. A controller is in control communication with the actuator and is configured to provide a first current to the actuator for an energizing period, identify a lack of return contact between the valve member and the first seat during a post-energizing period, and provide a second current to the actuator that is higher than the first current in response to the lack of return contact. 1. A valve actuator assembly , comprising:a valve member movable between a first seat and a second seat;a spring member biasing the valve member toward the first seat;an actuator positioned to move the valve member toward the second seat against the spring member biasing when the actuator is energized; anda controller in control communication with the actuator and configured to provide a first current to the actuator for an energizing period, identify a lack of return contact between the valve member and the first seat during a post-energizing period, and provide a second current to the actuator that is higher than the first current in response to the lack of contact.2. The valve actuator assembly of claim 1 , wherein the actuator includes an armature coupled to the valve member and a solenoid coil positioned to move the valve member using the armature when the solenoid coil is energized.3. The valve actuator assembly of claim 2 , wherein the controller is further configured to receive a return contact signal indicative of return contact between the valve member and the first seat responsive to the second current.4. The valve actuator assembly of claim 3 , wherein the controller uses a feedback loop to increase the first current toward the second current.5. The valve actuator assembly of ...

ENGINE FUEL INJECTION CONTROL DEVICE

Disclosed is a fuel injection control device for an engine equipped with a solenoid-type fuel injector The fuel injection control device comprises: a voltage sensor SW configured to detect a voltage of a solenoid of the fuel injector and a PCM configured to set a valve-open period of the fuel injector based on a fuel injection amount according to an operation state of the engine and control the fuel injector based on the valve-open period. The PCM is configured to perform correction for gradually shortening the set valve-open period, as the voltage (residual voltage) detected by the voltage sensor SW when opening the fuel injector becomes larger, and control the fuel injector based on the corrected valve-open period. 1. An engine fuel injection control device equipped with a solenoid-type fuel injector , comprising:a voltage sensor configured to detect a voltage of a solenoid in the fuel injector; anda controller configured to set a valve-open period of the fuel injector based on an fuel injection amount according to an operation state of the engine, in order to control the fuel injector based on the set valve-open period,wherein the controller is configured to correct the set valve-open period so that said valve-open period becomes shorter as the voltage detected by the voltage sensor at the time of opening the fuel injector becomes larger, in order to control the fuel injector based on the corrected valve-open period.2. An engine fuel injection control device equipped with a solenoid-type fuel injector , comprising:a voltage sensor configured to detect a voltage of a solenoid in the fuel injector; anda controller configured to derive an attenuation characteristic of a residual voltage of the solenoid in the fuel injector based on a variation of the voltage detected by the voltage sensor, and configured to set a valve-open period of the fuel injector based on an fuel injection amount according to an operation state of the engine, in order to control the fuel ...

FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION SYSTEM

A fuel injection control device is adapted for a fuel injection system including an injector and a high-pressure pump that raises pressure of fuel and supplies the fuel to the injector. The fuel injection control device includes a selecting unit for selecting by which one of full lift injection and partial injection to inject fuel, and a pump control unit for controlling operation of the high-pressure pump such that a pressure of fuel supplied to the injector coincides with a target pressure. The selecting unit selects the partial injection when a required injection quantity of fuel is equal to or smaller than a partial maximum injection quantity. A fuel injection system includes the fuel injection control device, the injector, and the high-pressure pump. 1. A fuel injection control device adapted for a fuel injection system including:an injector that is provided for an internal-combustion engine and includes a valving element and a nozzle hole, the injector configured to open the valving element and to inject fuel through the nozzle hole; anda high-pressure pump configured to raise pressure of fuel and to supply the fuel to the injector, the fuel injection control device comprising:a selecting means for selecting by which one of full lift injection and partial injection to inject fuel, wherein:by the full lift injection, the valving element starts to be opened, and reaches its full lift position, and then starts to be closed; andby the partial injection, the valving element starts to be opened, but does not reach its full lift position, and then starts to be closed; anda pump control means for controlling operation of the high-pressure pump such that a pressure of fuel supplied to the injector coincides with a target pressure, wherein:a maximum injection quantity of fuel when the partial injection is performed at a maximum value of the target pressure that the fuel injection system is capable of taking is referred to as a partial maximum injection quantity of fuel; ...