СПОСОБ РАБОТЫ ТОПЛИВНОЙ СИСТЕМЫ (ВАРИАНТЫ) И ТОПЛИВНАЯ СИСТЕМА

... 1. Способ работы топливной системы, выполненной с возможностью подачи газообразного топлива в двигатель, включающий:во время выбранных условий,последовательное открывание клапана бака и клапана направляющей-распределителя для топлива топливной системы; иуказание ухудшения характеристик регулятора давления топливной системы на основании изменения давления направляющей-распределителя для топлива во время последовательного открывания.2. Способ по п. 1, в котором выбранные условия включают в себя отсутствие подачи газообразного топлива в двигатель.3. Способ по п. 1, в котором выбранные условия включают в себя давление направляющей-распределителя для топлива газообразного топлива, являющееся более высоким, чем пороговое значение.4. Способ по п. 1, в котором регулятор давления является электронным регулятором давления, включающим в себя механический регулятор давления, присоединенный выше по потоку от клапана направляющей-распределителя для топлива, при этом ухудшение характеристик регулятора ...

Verfahren zum Betreiben eines Verbrennungsmotors in einem Notfahrbetrieb

Es wird ein Verfahren zum Betreiben eines Verbrennungsmotors in einem Notfahrbetrieb beschrieben. Ein Druckbegrenzungsventil (160), welches einen Hochdruckbereich (120) einer Kraftstoffversorgungseinrichtung (100) mit einem Niederdruckbereich (130) verbindet, öffnet, wenn ein Druck des Kraftstoffs in dem Hochdruckbereich einen Auslösedruckwert überschreitet. Ein Notfahrbetrieb wird eingeleitet, wenn das Druckbegrenzungsventil öffnet.

Fuel system for IC engine has a controlled venting of the high pressure common rail feed to the low pressure to progressively reduce the high pressure

A fuel system for a common rail supply for an IC engine has a venting valve (66) to vent excess fuel back to the low pressure feed (20) and has a valve element (68) spring loaded into the closed position. The invention describes an additional valve element (78) normally held in the open position and closed by a common spring to the first venting valve to provide a controlled restricted venting of fuel from the common rail to the low pressure line, i.e. to provide a controlled reduction of the high pressure. This is especially useful when the engine is on over run.

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 ...

Volumenstromsteuerventil

Die Erfindung bezieht sich auf ein Volumenstromsteuerventil (11), insbesondere für ein Kraftstoffeinspritzsystem wie ein Common-Rail-System zum Betrieb mit einem unter Druck stehenden Fluid, insbesondere Diesel-Kraftstoff, mit einem Hydraulikteil (1) mit einer Hydraulikbuchse (80), die einen Mantel (801) hat, und einem mit dem Hydraulikteil (1) zusammenwirkenden Steuerteil (2), insbesondere Elektromagnet-Steuerteil, zum Steuern des Volumenstromes, der durch das Volumenstromsteuerventil durchtritt, wobei das Volumenstromsteuerventil zwischen einer geöffneten und einer geschlossenen Stellung über unterschiedliche Zwischenstellungen steuerbar ist. Der Mantel (801) der Hydraulikbuchse (80) weist zur Verbesserung des Feinsteuerverhaltens des Volumenstromsteuerventils (11) mindestens zwei zueinander versetzte Durchtrittsöffnungen (3, 4) für das Fluid auf. Weiterhin bezieht sich die Erfindung auf Verfahren zur Verbesserung des Feinsteuerverhaltens eines Volumenstromsteuerventils. Weiterhin bezieht ...

Kraftstoffsystem für eine Brennkraftmaschine

Kraftstoffsystem (10) für eine Brennkraftmaschine (12), mit einer Kraftstoffpumpe (22), einem von dieser gespeisten Kraftstoffspeicher (26), einer mit diesem verbundenen Absteuerleitung (32), einem in dieser angeordneten Absteuerventil (30) und einer Einstelleinrichtung (20) zur Einstellung des Zuflussses zur Kraftstoffpumpe (22), wobei die Einstelleinrichtung (20) einen Steuerkolben (46) umfasst, der eine erste Steuerfläche (56) umfasst, die einen ersten Druckraum (60) begrenzt, der mit einem stromaufwärts von einer Drossel (34) liegenden Bereich (32a) der Absteuerleitung (32) verbunden ist, und welcher Steuerkolben (46) eine entgegengesetzt wirkende zweite Steuerfläche (58) umfasst, die einen zweiten Druckraum (62) begrenzt, der mit einem stromabwärts von der Drossel (34) liegenden Bereich (32b) der Absteuerleitung (32) verbunden ist, dadurch gekennzeichnet, dass die Einstelleinrichtung (20) Dämpfungsmittel (66) umfasst, welche auf den Steuerkolben (46) eine Bremskraft ausüben, und dass ...

Inlet metering valve

An inlet metering valve 20 for fuel injection equipment (10, fig 1) of an internal combustion engine has a fuel inlet 44, a spool 36 and an outlet 46, 48. The spool moves between a closed position where the outlet is closed, a first opening position P1 where the outlet is partially open, and a second opening position (P2, fig 3) where the outlet is totally open. The outlet may comprise first and second outlets 46, 48 where only the first outlet is open in the first opening position, and both outlets are open in the second opening position. A magnetic armature moves the spool to the first opening position when a first solenoid is 40 energised, and to the second opening position when a second solenoid 42 is also energised. A high pressure pump includes the valve. A method to control the valve comprises determining the opening position of the valve needed to enable a fuel quantity calculated from torque and power needs of an engine, and is executed by an electronic command unit.

BRENNSTOFFPUMPE FOR INTERNAL-COMBUSTION ENGINE

IMPROVED FUEL INJECTION SYSTEM FOR A COMBUSTION ENGINE

TOGETHER Of FUEL INJECTION

FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING A FULE PUMP

In a fuel supply system (10) for an internal combustion engine having a fuel pump (20) which has a variable delivery quantity and is intended for delivering fuel under pressure into a pressure space (26), a control device (34) for controlling the pressure in the pressure space (26) on the basis of at least one measurement variable which has been recorded at the fuel pump (20), at least one injection device (28) for injecting fuel from the pressure space (26), and a signal generator for making available a signal for controlling the injection device (28), according to the invention the control device (34) is configured to detect, on the basis of the signal from the signal generator, a change in the direction of a relatively large or relatively small fuel requirement of the at least one injection device (28) and to control the fuel pump (20) correspondingly in a predictive fashion.

FUEL INJECTION SYSTEM

The invention relates to a fuel injection system of an internal combustion engine, in particular a common rail injection system, comprising a mechanical fuel delivery pump, which supplies fuel to a high pressure pump via a low pressure line. The high pressure pump feeds highly pressurized fuel to a high pressure accumulator via a high pressure line, wherein the delivery volume of the fuel delivery pump can be regulated via a pressure controller.

Pulsation dampening structure for fuel rail

The present disclosure relates to a pulsation dampening structure for a vehicle. The pulsation dampening structure includes a fuel rail, a rail plug disposed at an end portion of the fuel rail, and a pulsation dampening part disposed on the rail plug to dampen pulsation generated when fuel enters. A turbulent flow is caused by reflecting fuel which was entered, and a vortex is generated in the fuel, thereby dampening pulsation.

PRESSURE CONTROL DEVICE AND FUEL INJECTION CONTROL SYSTEM

PROBLEM TO BE SOLVED: To solve the problem wherein, when a fuel pump is operated to feedback-control the detected value of the fuel pressure in a common rail to a target fuel pressure, if viscosity of fuel is outside an assumption, the gain of feedback control does not reach a suitable value. SOLUTION: If an engine stall occurs (Step S20: Yes), whether the fuel pressure in the common rail becomes less than the injection limit pressure of a fuel injection valve or not is determined (Step S24). When it is determined that the fuel pressure has become less than the fuel injection limit pressure, if the fuel pressure was vibrating before the stall (Step S26: Yes), the gain is reduced (Step S28), and if a delay in response is caused when following up a target fuel pressure (Step S30: Yes), the gain is increased (Step S32). COPYRIGHT: (C)2009,JPO&INPIT ...

Fuel system for internal-combustion engine, has hydraulically controlled adjusting device including damping unit that exerts braking force on control piston, where force depends on movement speed of piston

The system (10) has a hydraulically controlled adjusting device (20) including a control piston with a control surface limiting a pressure chamber. The chamber is connected with a region (32a) of a control line (32), where the region lies upstream of a throttle (34). The piston has a control surface that limits a pressure chamber connected with a region (32b) of the control line, where the region (32b) lies downstream of the throttle. The adjusting device has a damping unit that exerts a braking force on the piston, where the force depends on the movement speed of the piston.

Verfahren und System zur Motorsteuerung

Es werden Verfahren und Systeme für Kraftstoffsysteme mit einem gasförmigen Kraftstoff geschaffen. Ein Kraftstoffverteilerleitungs-Überdruck kann durch vorübergehendes Schließen eines Kraftstofftankventils des gasförmigen Kraftstoffs und Einleiten von Diagnoseroutinen, um festzustellen, ob ein Druckregler verschlechtert ist, angegangen werden. Wenn der Druckregler verschlechtert ist, können eine oder mehrere Kraftstoffsystemkomponenten eingestellt werden, um eine Kraftstoffverteilerleitungs-Drucksteuerung zu ermöglichen.

High pressure valve

A valve adapted to be arranged on the high pressure common rail of diesel injection equipment is disclosed. The valve comprises a body in which a valve member 12 is guided. The needle 12 cooperates with a valve seat 8 that has a female conical sloped seating face 6. The tip of the valve member 12 abuts sealingly against the seat 8. The valve member tip may be in the form of several male conical faces, with the sealing contact between the tip and the valve seat occurring at the intersection of two of these faces. Means 31 for guiding the valve member may also be present. This may take the form of a tubular member extending from the seat member.

Fuel injection equipment and control method

A fuel injection equipment 10 comprises a transfer pump 22 and a high pressure pump 14 wherein, in use, the fuel flow exiting the transfer pump 22 is integrally pressurized in the high pressure pump 14, ie all the flow from the transfer pump 22 enters the high pressure pump 14. There is thus no need for an inlet metering valve to control the high pressure pump inlet. The transfer pump 22 may be actuated by an electric motor 24 which is operated and controlled by ECU 28 to regulate the output flow of the high pressure pump 14 in response to signals S18 from a pressure sensor 18 which measures the pressure P16 in a high pressure reservoir (common rail) 18. The ECU 28 may perform dynamic and closed-loop control between the rail pressure P16 and the revolution speed of the electric motor 24. The flow rate supplied by the transfer pump 22 may take account of pump and injector leakage.

PROCEDURE FOR DETERMINING A POSITIVE PRESSURE IN A FUEL MEMORY OF AN INJECTION SYSTEM OF AN INTERNAL-COMBUSTION ENGINE

Pressure limiting valve

Method for controlling digital high-pressure pump

本发明涉及一种用于控制数字高压泵（20）的方法，当内燃发动机在起动程序期间无法起动时，该控制方法包括以下连续步骤:检查内燃发动机的外部参数；测量高压输出端（20_3）处的物理参数，当在高压输出端（20_3）测量的物理参数小于或等于参考值时，在起动程序期间向高压泵（20）施加电分离控制信号（SD）代替电控制信号，当在高压输出端（20_3）处测量的物理参数大于参考值时，在给定时间后停止起动程序。

PRESSURE REGULATOR FOR A RAMP HIGH-PRESSURE FUEL INJECTION SYSTEM

Régulateur comprenant un corps d'électrovanne (10) l'aiguille (20) fermant le siège de soupape (30) relié à l'entrée haute-pression (E) et débouchant dans une chambre de décharge (13) communiquant avec le circuit de retour de liquide par des orifices de sortie 14. La chambre de décharge (13) entourant l'aiguille se poursuit par une cavité (15) recevant un corps de soupape d'entrée (50) traversé axialement par l'alésage (51) débouchant dans le siège de soupape (30). Les orifices de sortie (14) débouchent transversalement dans la paroi (131) de la chambre de décharge (13) en-dessous de sa partie supérieure (132). Au-dessus de la surface (54) du corps de soupape (50) constituant le fond de la chambre de décharge (13) et ayant en son centre le siège de soupape (30), le régulateur comporte un élargissement annulaire (70) de la chambre de décharge (13) sous les orifices de sortie (14), dans le prolongement de la surface conique (31) formant le siège de soupape (30) et constituant un volume annulaire ...

Fuel injecting device for e.g. diesel engine, has sensor for measuring return pressure of fuel passing through return pipe, and pressure regulating unit for regulating return pressure based on measurements carried by sensor

Dispositif d'injection de carburant (1) comportant :- un réservoir de carburant (2) ;- une pompe (3) de carburant ;- un injecteur de carburant (4a, 4b, 4c, 4d) doté d'une entrée d'admission de carburant (5a, 5b, 5c, 5d), d'une sortie de retour de carburant (6a, 6b, 6c, 6d) ;le dispositif d'injection (1) étant en outre doté :- d'une conduite d'alimentation (8) reliant ladite pompe (3) à ladite entrée d'admission (5a, 5b, 5c, 5d) ; et- d'une conduite de retour (9) reliant la sortie de retour (6a, 6b, 6c, 6d) audit réservoir (2),Le dispositif comprend :- un capteur (10) de pression de retour (Pr)- des moyens de régulation de pression (11) adaptés pour réguler la pression de retour (Pr) en fonction de mesures du capteur de pression de retour (10).

IMPROVEMENT TO A FUEL-INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

VARIABLE STROKE DIRECT INJECTION FUEL PUMP SYSTEM AND COMPUTER-IMPLEMENTED METHOD TO OPERATE THE SYSTEM

resumo "sistema de bomba de combustível de injeção direta de curso variável e método implementado por computador para operar o sistema" um sistema de bomba de combustível de injeção direta (di) de curso variável para um motor inclui uma bomba de combustível di (136) tendo um elemento de curso (278) e configurada para bombear uma quantidade de combustível com base em um curso do elemento de curso (278). o sistema inclui uma montagem de acionador de bomba de combustível variável (212) compreendendo um elemento acionador (270) configurada para acionar o elemento de curso (278), uma válvula de controle (224) configurada para controlar um fluxo de fluido hidráulico para o ele-mento acionador (270), e uma bomba de fluido hidráulico (262) configurada para bombear o fluido hidráulico e ser acionada por um ou mais lobos (216) de um eixo de came (120). o sistema também inclui uma unidade de controle de motor (ecu) configurada para controlar um curso variável do elemento de curso (278) por contro-lar a válvula de controle (224) com base em um ou mais parâmetros de operação do motor. summary "variable stroke direct injection fuel pump system and computer-implemented method for operating the system" a variable stroke direct injection (di) fuel pump system for an engine includes a di (136) fuel pump having a stroke element (278) and configured to pump a quantity of fuel based on a stroke of the stroke element (278). the system includes a variable fuel pump drive assembly (212) comprising a drive element (270) configured to drive the stroke element (278), a control valve (224) configured to control a hydraulic fluid flow to the drive element (270), and a hydraulic fluid pump (262) configured to pump hydraulic fluid and be driven by one or more lobes (216) of a cam shaft (120). The system also includes a motor control unit (ECU) configured to control a variable stroke of the stroke element (278) by controlling the control valve (224) based on one or more engine ...

DUAL CIRCUIT FUEL INJECTION INTERNAL COMBUSTION ENGINE

A dual circuit fuel injection internal combustion engine capable of maintaining a fuel stagnated in a cylinder injection delivery pipe in a steady state. The internal combustion engine comprises cylinder injection injectors (15) and intake pipe injection injectors (16), a control means (35) changing the jetting ratio of the injectors (16) to (15), a fuel pressure detection means (36) and a fuel temperature detection means (37) detecting the pressure and temperature of the fuel in the cylinder injection delivery pipe (23), and fuel regulating means (43) and (44) regulating the pressure and temperature of the fuel in the cylinder injection delivery pipe (23). When the jetting ratio of the intake pipe injection injectors (16) to the cylinder injection cylinders (15) is high and at least one of the pressure and temperature of the fuel in the cylinder injection delivery pipe (23) exceeds a prescribed value, the control means (35) operates the fuel regulating means (43) and (44).

Control system including control device for internal combustion engine

A control system includes an internal combustion engine and a control device. The internal combustion engine includes a pressurization device. The pressurization device includes a housing having a cylindrical shape, a piston, a pressurization chamber, a piston chamber, a pressurization control chamber, and a switching device configured to selectively connect the pressurization control chamber with a high pressure fuel channel or a low pressure fuel channel. The control device estimates the temperature of the low pressure fuel channel. When the estimated temperature of the low pressure fuel channel is lower than the temperature of the pressurization device, and the temperature of the pressurization device is higher than a predetermined cooling request temperature, the control device controls the switching device to connect the pressurization control chamber with the low pressure fuel channel.

Druckregelventil mit integriertem Drucksensor

Die Erfindung betrifft ein Druckregelventil (10) für einen Hochdruckspeicher (1), insbesondere einen Kraftstoff-Hochdruckspeicher, mit einem Gehäuse (12), einem Ventilsitz (20) und einem Schließglied (30). Das Schließglied (30) umfasst einen Anker (32), und verschließt an seiner dem Hochdruckspeicher (1) abgewandten Seite (33) den Ventilsitz (20). Zwischen dem Ventilsitz (20) und dem Anker (32) ist ein Ankerraum (34) ausgebildet, wobei an dem Ankerraum (34) ein Drucksensor (40) angeordnet ist.

Verfahren und Vorrichtung zum Betrieb eines Ventils, insbesondere für ein Speichereinspritzsystem

Die Erfindung bezieht sich auf ein Verfahren zum Betrieb eines Ventils (10), insbesondere eines Druckabbauventils für ein Speichereinspritzsystem, sowie auf ein entsprechendes Speichereinspritzsystem, wobei das Ventil (10) eine Ventilöffnung (12) und ein Verschlusselement (13) aufweist, das zwischen einer ersten Endposition, in der es einen Verschluss der Ventilöffnung bewirkt, und einer zweiten Endposition, in der es die Ventilöffnung wenigstens teilweise freigibt, gegen die Kraft eines Rückstellfederelements (16) mittels eines elektromagnetischen Antriebs (14, 15) mit einer strombeaufschlagbaren Spule (15) und einem magnetisch antreibbaren Anker (14) antreibbar ist. Die Aufgabe, eine Signalstärke zur Ansteuerung des Ventils zu wählen, die eine geringe Geräuschentwicklung sowie einen geringen Verschleiß ermöglicht, wird mit den Merkmalen der Erfindung dadurch gelöst, dass wenigstens einmal die Spule mit einem definierten elektrischen Signal beaufschlagt wird, um den Anker (14) gegen die Kraft des Rückstellfederelements (16) zu bewegen, dass mittels eines Stromsensors der zeitliche Verlauf der Stromstärke (20, 21, 22) in der Spule (15) erfasst wird und dass aus dem zeitlichen Verlauf der Stromstärke das Bewegungsprofil des Verschlusselements (13) bei dem definierten Stromsignal, insbesondere eine Öffnungs- oder Schließzeit, ermittelt wird. The invention relates to a method for operating a valve (10), in particular a pressure reduction valve for a storage injection system, as well as to a corresponding storage injection system, wherein the valve (10) has a valve opening (12) and a closure element (13) which between a first end position in which it causes a closure of the valve opening, and a second end position in which it at least partially releases the valve opening, against the force of a return spring element (16) by means of an electromagnetic drive (14, 15) with a current-energizable coil (15) and a magnetically driven armature (14) is drivable. The object to ...

Common-Rail-Einspritzsystem, Brennkraftmaschine und Verfahren zur Druckerhöhung während eines Startvorgangs

Die vorliegende Erfindung betrifft ein Common-Rail-Einspritzsystem (100) für eine Brennkraftmaschine, eine ein erfindungsgemäßes Common-Rail-Einspritzsystem (100) aufweisende Brennkraftmaschine sowie ein Verfahren zur Druckerhöhung eines in einer Kraftstoffverteilerleiste (101) gespeicherten Kraftstoffs während eines Startvorgangs einer Brennkraftmaschine. Das Common-Rail-Einspritzsystem (100) für eine Brennkraftmaschine weist hierbei auf: eine Kraftstoffverteilerleiste (101) mit einem definierten Volumen (V) zur Aufnahme von Kraftstoff, und eine Rail-Druckerzeugungseinrichtung (1), mittels der das definierte Volumen (V) der Kraftstoffverteilerleiste (101) reduzierbar ist.

FUEL INJECTION DEVICE WITH HYDROPNEUMATIC MEMORY

Measuring the fuel pressure adjustment system and method

Method for controlling an injection system of an internal combustion engine

HIGH PRESSURE VALVE

Fuel injection assembly for internal combustion engine, has chamber whose stress unit forces displacement of wall based on changes of temperature of fuel transferred via pipe and adjusts capacity of assembly based on temperature of fuel

Ensemble d'injection de carburant (1) comportant au moins un injecteur de carburant (2) et au moins un réservoir de carburant (3) reliés entre eux par une conduite de retour de carburant (4), l'ensemble comportant en outre une chambre (5) reliée à ladite conduite (4) et disposée entre l'injecteur (2) et le réservoir (3). La chambre (5) comprend une paroi de chambre mobile (6) de manière à faire varier le volume intérieur (V) de la chambre (5) et l'ensemble d'injection comporte un moyen mécanique de contrainte (8) de la paroi de chambre (6) adapté pour forcer le déplacement de ladite paroi (6) en fonction de variations de la température (T) du carburant transféré via ladite conduite de retour (4) et pour ainsi adapter la capacité de contenance en carburant de l'ensemble d'injection en fonction de la température (T) du carburant transféré via ladite conduite (4).

СПОСОБ И СИСТЕМА ДЛЯ УПРАВЛЕНИЯ НАСОСОМ ВЫСОКОГО ДАВЛЕНИЯ, В ЧАСТНОСТИ ДЛЯ СИСТЕМЫ ВПРЫСКА ТОПЛИВА ДИЗЕЛЬНОГО ДВИГАТЕЛЯ

1. Способ управления системой впрыска топлива двигателя внутреннего сгорания, при этом система впрыска топлива включает в себя: ! нагнетающее высокое давление средство (16, 18), выполненное с возможностью подачи массы топлива, перемещаемого из топливного бака (24), в область (12) высокого давления, с которой соединено множество инжекторов (I1-I4), и включающее в себя дозирующее топливо средство (18) для регулирования количества топлива, подлежащего подаче в область (12) высокого давления, ! датчик (20) для измерения давления топлива в области (12) высокого давления; и ! электронный блок (30) управления, выполненный с возможностью приведения в действие дозирующего топливо средства (18) посредством возбуждающего сигнала (Inom; Iact) как функции измеряемого давления топлива и режима работы двигателя, ! при этом электронный блок (30) управления выполнен с возможностью определения возбуждающего сигнала (Inom; Iact) для приведения в действие дозирующего топливо средства (18) в соответствии с номинальной характеристической кривой (A) нагнетающего высокое давление средства (16, 18), представляющей заданную взаимосвязь между возбуждающим сигналом и массой топлива, подаваемого нагнетающим средством (16, 18), отличающийся тем, что способ содержит этапы: ! получения действительного значения (Iact) возбуждающего сигнала, относящегося к регулируемой массе топлива, подаваемого в область (12) высокого давления в заданный момент работы двигателя; ! определения смещения между действительным возбуждающим сигналом (Iact) и номинальным возбуждающим сигналом (Inom), относящимся к регулируемой массе топлива, в соответствии с номинальной характеристической кривой (A); ! оц

Schaltventil für ein Kraftstoffeinspritzsystem sowie Kraftstoffhochdruckpumpe

Die Erfindung betrifft ein Schaltventil (30) mit einem Ventilgehäuse (38), das eine konisch ausgebildete Mantelfläche (58) und einen sich radial erstreckenden, in axialer Richtung federnd ausgebildeten, Federvorsprung (62) aufweist, der radial über die Mantelfläche (58) hervorsteht. Weiter betrifft die Erfindung eine Kraftstoffhochdruckpumpe (18), die in einer Aufnahmebohrung (32) eines Pumpengehäuses (36) ein solches Schaltventil (30) aufweist.

Pumpe eines Kraftstoffeinspritzers

Eine Pumpe eines Kraftstoffeinspritzsystems ist mit einem komprimierbaren Druckraum (54) zum Fördern von Kraftstoff unter Druck in einen Druckbereich des Kraftstoffeinspritzsystems (10) ausgestattet. Der komprimierbare Druckraum (54) ist direkt fluidleitend mit einem expandierbaren Speicherraum (60) verbunden und dient der autarken Regelung des mit der Pumpe erzeugten Drucks.

Kraftstoffversorgungssystem für eine Brennkraftmaschine mit einer Kraftstoff-pumpe

Bei einem Kraftstoffversorgungssystem (10) für eine Brennkraftmaschine mit einer in ihrer Fördermenge veränderbaren Kraftstoffpumpe (20) zum Fördern von Kraftstoff unter Druck in einen Druckraum (26), einer Steuereinrichtung (34) zum Steuern des Drucks im Druckraum (26) auf der Grundlage von mindestens einer Messgröße, die an der Kraftstoffpumpe (20) aufgenommen wurden, mindestens einer Einspritzeinrichtung (28) zum Einspritzen von Kraftstoff aus dem Druckraum (26), und einem Signalgeber zum Bereitstellen eines Signals zum Steuern der Einspritzeinrichtung (28), ist erfindungsgemäß die Steuereinrichtung (34) dazu eingerichtet, aus dem Signal des Signalgebers eine Änderung in Richtung auf einen größeren oder kleineren Kraftstoffbedarf der mindestens einen Einspritzeinrichtung (28) zu erkennen und die Kraftstoffpumpe (20) entsprechend vorausschauend zu steuern.

Einspritzsystem für Dieselkraftstoffe

Die Erfindung betrifft ein Einspritzsystem für Dieselkraftstoff über ein Common Rail (CR) und Injektoren (13), über welche die Einspritzmenge entsprechend dem Betriebsdruck im Rail (2) gesteuert wird, wobei zur CR-Einspeisung auf ihrer Niederdruckseite mengengeregelte stößelbetätigte Monoblockpumpen (1) vorgesehen sind und dass für die Mengenzumessung eine kennfeldbasierte elektronische Steuereinheit (ECU) vorgesehen ist.

Verfahren zum Betrieb einer Abwärmenutzungsanordnung

Verfahren zum Betrieb einer Abwärmenutzungsanordnung einer Brennkraftmaschine, wobei die Brennkraftmaschine einen Abgaskanal und die Abwärmenutzungsanordnung einen ein Arbeitsmedium führenden Kreislauf aufweist. In dem Kreislauf sind in Flussrichtung des Arbeitsmediums eine Pumpe, zumindest ein Verdampfer, eine Expansionsmaschine und ein Kondensator angeordnet. Der zumindest eine Verdampfer ist auch in dem Abgaskanal angeordnet, wobei in dem zumindest einen Verdampfer ein von der Brennkraftmaschine ausgestoßenes Abgas als Wärmequelle verwendet wird und dadurch das Arbeitsmedium im Verdampfer verdampft wird. Das erfindungsgemäße Verfahren ermittelt innerhalb des zumindest einen Verdampfers eine Leckage des Arbeitsmediums in den Abgaskanal.

Fuel pump with integrated pressure relief valve

A fuel pump comprises a housing 14 with a pumping chamber 20, an outlet passage 22, and a pumping plunger 30 reciprocally arranged within a plunger bore. An integrated pressure relief valve assembly 12 is arranged in a pressure relief passage and includes: a seat member comprising a through bore 50, and an annular seat that surrounds said bore at one end. The seat member is arranged in said pressure relief passage one side exposed to high-pressure; a needle 42 with a needle head, extends through the bore, and the needle head cooperating with the annular seat to close the through bore. A spring 44 is arranged to bias the needle into a closed position, the spring element resting against a stop member 46 rigidly linked with the needle 42. The invention provides an improved pressure relief valve assembly of simple design and allows minimizing pumping dead volume.

PUMP UNIT FOR A HIGH-PRESSURE PUMP

The pump unit (10) comprises a pump housing (15) having a low-pressure inlet (17) and a high-pressure outlet (19). A working medium is fed via the low-pressure inlet (17) to a working chamber (20) which is formed in the pump housing (15). The working medium is discharged from the working chamber (20) via the high-pressure outlet (19). Furthermore, the pump unit (10) comprises a pump piston channel (36) which is formed in the pump housing (15) and has a longitudinal axis (L1). The pump unit (10) has a first pump piston (32) which is arranged movably along the longitudinal axis (L1) in the pump piston channel (36) and is coupled hydraulically to the working chamber (20). Furthermore, the pump unit (10) has a second pump piston (32) which is arranged movably along the longitudinal axis (L1) in the pump piston channel (36) and is coupled hydraulically via a compensation volume (100) to the first pump piston (32), wherein the compensation volume (100) is coupled hydraulically to a compensation ...

Fuel pressure amplifier

The present invention relates to systems and methods for pressurization of a fuel line of an engine. In one embodiment, a fuel charging system for an engine is provided. The fuel charging system includes a first fuel pump in fluid communication with a fuel tank to generate a first fluid pressure within a first fuel line. The fuel charging system also includes a second fluid pump having a reciprocating piston including a low pressure end and a high pressure end. The low pressure end is in fluid communication with the first fuel pump through the first fuel line and the high pressure end is in fluid communication with an engine fuel rail through a second fuel line. The reciprocating piston is driven by the first fluid pressure to generate a second fluid pressure within the second fuel line, wherein the second fluid pressure is greater than the first fluid pressure.

СПОСОБ РАБОТЫ ТОПЛИВНОЙ СИСТЕМЫ (ВАРИАНТЫ)

Изобретение может быть использовано в системах топливоподачи двигателей внутреннего сгорания (ДВС). Предложены способы для топливных систем ДВС, работающих на газообразном топливе или на двух видах топлива. Избыточное давление направляющей-распределителя 52 для топлива может подвергаться принятию ответных мер посредством закрывания клапана 32 топливного бака газообразного топлива и инициирования диагностических процедур для определения, подвергнут ли ухудшению характеристик регулятор 34 давления. Если регулятор давления подвергнут ухудшению характеристик, один или более компонентов топливной системы может регулироваться, чтобы обеспечивать возможность регулирования давления направляющей-распределителя для топлива. Технический результат – поддержание эксплуатационных характеристик топливной системы при ухудшении характеристик регулятора давления топлива. 3 н. и 14 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 613 769 C2 (51) МПК F02D 19/02 (2006.01) F02D 19/06 (2006.01) F02M 21/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2013105257, 07.02.2013 (24) Дата начала отсчета срока действия патента: 07.02.2013 (72) Автор(ы): ПЕРСИФУЛЛ Росс Дикстра (US) (73) Патентообладатель(и): ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи (US) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 7140354 B1, 28.11.2006. EP Приоритет(ы): (30) Конвенционный приоритет: 08.02.2012 US 13/369,052 (45) Опубликовано: 21.03.2017 Бюл. № 9 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" 2 6 1 3 7 6 9 (43) Дата публикации заявки: 20.08.2014 Бюл. № 23 2071158 A1, 17.06.2009. US 6467466 B1, 22.10.2002. US 6152110 A1, 28.11.2000. SU 1141211 A1, 23.02.1985. R U 21.03.2017 2 6 1 3 7 6 9 R U (57) Формула изобретения 1. Способ работы топливной системы, выполненной с возможностью подачи газообразного топлива в двигатель, ...

Hochdruckpumpe und Verfahren zur Förderung eines Fluids

Eine Hochdruckpumpe für ein Kraftstoffeinspritzsystem für eine Brennkraftmaschine eines Kraftfahrzeugs umfasst: eine Fluidzuleitung (19) zum Zuführen eines Fluids aus einem Niederdruckbereich, eine Fluidableitung (12), und einen Zylinderraum (1), der hydraulisch zwischen der Fluidzuleitung (19) und der Fluidableitung (12) angeordnet ist, ein Auslassventil (100) zum Ableiten des Fluids aus dem Zylinderraum (1) in einen hydraulisch der Fluidableitung (12) nachgeordneten Hochdruckbereich, das in einem ersten Zustand haltbar ist, in dem Fluid von dem Hochdruckbereich durch das Auslassventil (100) in den Zylinderraum (1) gelangt.

Kraftstoffeinspritzvorrichtung mit hydropneumatischem Speicher

Bei einer Kraftstoffeinspritzvorrichtung (1) mit einem zentralen Druckspeicher (6) und einem Druckregelventil (9), über das der Druck im zentralen Druckspeicher (6) eingestellt wird, ist ein Hydraulikspeicher (11) über das Druckregelventil (9) mit dem zentralen Druckspeicher (6) verbunden.

Engine performance modification or tuning kit

Fuel injection system

Direct injection fuel system with reservoir for internal combustion engine and operation method

A method of operating a fuel delivery system for an internal combustion engine is described. The system may include a plurality of direct cylinder injectors, a fuel rail upstream of the injectors, a first pump, and a second pump coupled downstream of the first pump and to the fuel rail. The method may include, after or during engine shutdown, and during a fuel system cool down, activating the first pump; and varying the activation of the first pump responsive to temperature to maintain a higher pressure for high temperatures. Alternatively, in some examples, the system may include a reservoirin a bypass around the second pump, the bypass having a valve downstream of the fuel reservoir, where the valve is positioned vertically above the second pump and the fuel reservoir is positioned vertically above the valve. The fuel reservoir may be sized to hold a sufficient amount of fuel in the bypass to allow fuel to migrate from the bypass to the fuel rail during engine cool down.

Variable stroke direct injection fuel pump system and computer implemented method for operating system

一种用于发动机的可变冲程直接喷射(DI)燃油泵系统，包括：DI燃油泵(136)，DI燃油泵(136)具有冲程构件(278)并且配置成基于冲程构件(278)的冲程泵送一定量的燃油。所述系统包括可变燃油泵致动器组件(212)，可变燃油泵致动器组件(212)包括配置成致动冲程构件(278)的致动器构件(270)、配置成控制到致动器构件(270)的液压流体的流量的控制阀(224)，以及配置成泵送所述液压流体并由凸轮轴(120)的一个或多个凸角(216)致动的液压流体泵(262)。该系统还包括发动机控制单元(ECU)，发动机控制单元(ECU)配置为通过基于发动机的一个或多个操作参数控制控制阀(224)来控制冲程构件(278)的可变冲程。

FLEXIBLE RATE SHAPE COMMON RAIL FUEL SYSTEM AND FUEL INJECTOR FOR SAME

A fuel system for an internal combustion engine includes a common rail and a plurality of fuel injectors connected to the common rail and each including an outlet check, an injection control valve, and an injection rate controller. The injection rate controller varies a flow area to a nozzle of the fuel injector such that a pressure drop through the fuel injector is varied to provide injection rate shaping. 1. A fuel system for an internal combustion engine comprising:a fuel supply;a common rail;a fuel pressurization pump structured to pressurize a fuel for supplying to the common rail; anda plurality of fuel injectors each having formed therein a high pressure inlet fluidly connected to the common rail, a nozzle chamber fluidly connected to the high pressure inlet by way of a nozzle passage, a control chamber fluidly connected to the high pressure inlet, a plurality of spray orifices, and a low pressure outlet;each of the plurality of fuel injectors further including an outlet check movable to open and close the plurality of spray orifices to the nozzle chamber and having a closing hydraulic surface exposed to a fluid pressure of the control chamber, and an injection control valve movable to open and close the control chamber to the low pressure outlet;each of the plurality of fuel injectors further including an injection rate controller exposed to a flow of fuel through the nozzle passage, and adjustable between a rate limiting configuration, and a second configuration; anda flow area of the nozzle passage is limited by the injection rate controller to a relatively greater extent at the rate limiting configuration, and the flow area is limited to a relatively lesser extent at the second configuration.2. The fuel system of wherein the injection rate controller includes an assembly of a rate control valve and at least one body piece.3. The fuel system of wherein the injection rate controller further includes an electrical actuator structured to move the rate control ...

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 pump systems and methods of operation

The present invention relates to an injection pump system (1). An injection pump (3) is provided for supplying high pressure fuel. A low pressure fuel line (5) is provided in fluid communication with an inlet of the injection pump (3). A high pressure fuel line (7) is provided in fluid communication with an outlet of the injection pump (3) and a fuel rail. A control valve (27) is provided for controlling filling of the injection pump (3). The injection pump system is provided with a control unit for controlling operation of the control valve (27). The control unit is configured to close the control valve (27) to inhibit the supply of fuel to the injection pump when the rail pressure is within a target pressure range. The invention also relates to a method of operating an injection pump system. An aspect of the invention also relates to a fuel injection system.

Способ (варианты) и система для топливной системы двойного впрыска

FIELD: physics. SUBSTANCE: invention relates to methods and systems for control of uncased engine of vehicle after vehicle assembly. Disclosed are methods and systems for controlling fuel injectors for fuel system configured to distribute and direct fuel injection into engine. In one example, the method may comprise steps of: in non-rolling engine starting mode, fuel is supplied with distributed injection nozzle and fuel is not supplied by direct injection injector, and at the end of non-start engine start-up mode, fuel is supplied by both distributed injection nozzle and direct injection injector in ratio of fuel fraction determined depending on engine operation parameters. EFFECT: technical result is reduction of fuel supply errors without increase in emissions of exhaust gases, shorter duration of tests with start-up of non-rolled engine. 20 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F02D 41/00 F02D 41/06 F02D 41/26 F02D 41/30 F02D 41/38 (11) (13) 2 715 765 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02D 41/062 (2019.08); F02D 41/064 (2019.08); F02D 41/065 (2019.08); F02D 41/3094 (2019.08); F02D 41/3863 (2019.08); F02M 63/023 (2019.08); F02M 63/0285 (2019.08) (21)(22) Заявка: 2016127041, 06.07.2016 06.07.2016 Дата регистрации: 03.03.2020 20.07.2015 US 14/803,853 (43) Дата публикации заявки: 12.01.2018 Бюл. № 2 (45) Опубликовано: 03.03.2020 Бюл. № 7 2 7 1 5 7 6 5 R U (54) Способ (варианты) и система для топливной системы двойного впрыска (57) Реферат: Изобретение относится к способам и системам впрыска и по окончании режима пуска для управления необкатанным двигателем необкатанного двигателя подают топливо как транспортного средства после сборки форсункой распределенного впрыска, так и транспортного средства. Предложены способы форсункой непосредственного впрыска в и системы для управления топливными соотношении долей топлива, определяемом в форсунками ...

СПОСОБ ДЛЯ ДВИГАТЕЛЯ (ВАРИАНТЫ) И ТОПЛИВНАЯ СИСТЕМА ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение может быть использовано в системах топливоподачи двигателей внутреннего сгорания. Раскрыт способ эксплуатации двигателя с возможностью впрыска топлива в цилиндр через две форсунки, для устранения проблемы чрезмерного давления в топливной рампе из-за застоя горячего топлива в ней. Способ содержит шаги, на которых цилиндр двигателя эксплуатируют с подачей топлива только распределенным впрыском и выборочно включают вторую форсунку (например, форсунку непосредственного впрыска) в случае роста давления топлива в топливной рампе, соединенной со второй форсункой, и отключают вторую форсунку при падении давления в топливной рампе до нижнего порога, определяемого в зависимости от параметров работы двигателя. Так можно снизить интенсивность ухудшения характеристик второй форсунки, одновременно поддерживая эксплуатационные показатели двигателя на необходимом уровне. 3 н. и 17 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F02D 41/30 F02D 41/38 F02M 55/02 F02M 37/00 (11) (13) 2 719 752 C2 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F02D 41/3094 (2019.08); F02D 41/3845 (2019.08); F02M 43/04 (2019.08); F02M 55/025 (2019.08); F02M 63/023 (2019.08); F02M 63/0285 (2019.08) (21)(22) Заявка: 2016127366, 07.07.2016 07.07.2016 Дата регистрации: (73) Патентообладатель(и): Форд Глобал Текнолоджиз, ЛЛК (US) 23.04.2020 (56) Список документов, цитированных в отчете о поиске: RU 152686 U1, 10.06.2015. US 8364384 B2, 29.01.2013. US 20120185152 A1, 19.07.2012. 21.07.2015 US 14/805,068 (43) Дата публикации заявки: 15.01.2018 Бюл. № 2 (45) Опубликовано: 23.04.2020 Бюл. № 12 R U (54) СПОСОБ ДЛЯ ДВИГАТЕЛЯ (ВАРИАНТЫ) И ТОПЛИВНАЯ СИСТЕМА ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ (57) Реферат: Изобретение может быть использовано в непосредственного впрыска) в случае роста системах топливоподачи двигателей внутреннего давления топлива в топливной рампе, сгорания. Раскрыт способ эксплуатации ...

УСТРОЙСТВО И СПОСОБ НАСТРОЙКИ ДАВЛЕНИЯ В СЛИВНОЙ ЛИНИИ ДЛЯ ТОПЛИВНОЙ ФОРСУНКИ

Vorrichtung und Verfahren zur Rücklaufdruckeinstellung für einen Injektor

Die Erfindung betrifft eine Vorrichtung (10) zur Rücklaufdruckeinstellung für einen Injektor (12) mit einer Rücklaufleitung (14) mit einem ersten Ende (14a), an welchem eine Rücklaufaustrittsöffnung (12a) des Injektors (12) direkt oder indirekt so anbindbar ist, dass eine Rücklaufmenge (16) des Injektors (12) von dem ersten Ende (14a) der Rücklaufleitung (14) zu einem zweiten Ende (14b) der Rücklaufleitung (14) fließt, und zumindest einem Ventil (20), mittels welchem ein Rücklaufdruck zumindest zwischen dem ersten Ende (14a) der Rücklaufleitung (14) und dem Ventil (20) in der Rücklaufleitung (14) einstellbar ist, wobei die Vorrichtung (10) ein elektrisch verstellbares Drosselventil (20) als das Ventil (20) aufweist. Ebenso betrifft die Erfindung einen Rücklaufblock für Injektoren (12), eine Messvorrichtung zur Einspritzmengen- und/oder Rücklaufmengenmessung für mindestens einen Injektor (12) und einen Prüfstand für mindestens einen Injektor (12). Des Weiteren betrifft die Erfindung ein ...

Einspritzanlage für eine Brennkraftmaschine

Einspritzanlage für eine Brennkraftmaschine, mit mindestens einem mit einem Kraftstoffspeicher (16) gekoppelten Injektor (18), einer Vorförderpumpe (12) zur Förderung von Kraftstoff aus einem Kraftstofftank (10), einer der Vorförderpumpe (12) stromabwärts nachgeordneten Hochdruckpumpe (14) zur Förderung des Kraftstoffs in den Kraftstoffspeicher (16), einem hydraulisch zwischen der Vorförderpumpe (12) und der Hochdruckpumpe (14) angeordneten Volumenstromsteuerventil (22), mit dem der Kraftstofffluss von der Vorförderpumpe (12) in die Hochdruckpumpe (14) einstellbar ist, und einem dem Volumenstromsteuerventil (22) stromabwärts nachgeordneten Entlüftungsventil (30), das ausgebildet und angeordnet ist zum Abführen von stromaufwärts der Hochdruckpumpe (14) im Kraftstoff eingeschlossenen Gasen.

High pressure value

Fuel injection system

A fuel injection system 14 for a compression ignition internal combustion engine. The system comprises a fuel pump 20 comprising a pumping chamber 33, a first outlet valve 34 to control fuel delivery from the fuel pump to a primary accumulator 24 (common rail) in communication with fuel injectors. A secondary accumulator 40, and a second outlet valve 36 to control fuel delivery from the pumping chamber to the secondary accumulator. The first outlet valve controls communication between the accumulators, and the outlet valves are configured such that pressure in the secondary accumulator between pumping events is lower than in the primary accumulator. Lower fuel pressure in the secondary accumulator than in the primary accumulator means that pressure spikes in the pumping chamber are reduced, thereby reducing fatigue stress on components of the fuel pump. The secondary accumulator may also have pressure control means 50 with a leakage path 52 to a low pressure drain.

HIGH PRESSURE VALVE

L'invention est une vanne haute pression (10) partie au circuit d'injection diesel (58) à rampe commune d'un moteur à combustion interne. La vanne (10) comprend un corps (12) sur lequel est fixé un électroaimant (14) dont la carcasse (28) a une partie discale radiale pourvue d'un trou central joignant une surface intérieure opposée à une surface extérieure. Le corps (12) est pourvu d'une surface extérieure cylindrique de centrage et d'une surface radiale d'appui. La carcasse (28) s'agence sur le corps autour de la surface de centrage, la surface discale extérieure étant en contact surfacique contre la surface d'appui du corps. La bobine (52) de l'électroaimant (14) est agencée dans l'espace tubulaire entre le corps (12) et la carcasse (28) elle-même fermée par un anneau de fermeture (54). L'étanchéité entre le corps (12) et la carcasse (28) est assurée par un joint (46) comprimé par une rondelle de coincement (48) contre la surface de centrage et contre la surface discale intérieure. La carcasse (28) est alors immobilisée sur le corps (12) par ladite rondelle de coincement (48).

METHOD FOR MONITORING A PRESSURE SENSOR IN A DIRECT INJECTION SYSTEM

AN INTEGRATED ARRANGEMENT OF A VALVE AND A HIGH-PRESSURE FUEL RAIL

INTEGRATED ARRANGEMENT OF A HIGH-PRESSURE VALVE AND AN INJECTION RAMP

METHOD FOR CONTROLLING A PRESSURE

The invention relates to a method and an assembly for controlling the pressure in a high-pressure region of an injection system in an internal combustion engine.

METHOD FOR CONTROLLING A DIGITAL HIGH-PRESSURE PUMP

A method for controlling a digital high-pressure pump, the control method including the following consecutive steps when the internal combustion engine does not manage to start during the starting procedure: checking the external parameters of the internal combustion engine; measuring a physical parameter at the high-pressure output, applying an electrical detachment control signal as a replacement for the electrical control signal to the high-pressure pump during the starting procedure when the physical parameter measured at the high-pressure output is less than or equal to a reference value, and stopping the starting procedure after a given time when the physical parameter measured at the high-pressure output is greater than the reference value. 1. A method for controlling a digital high-pressure pump controlled for example by a peak and hold control signal , including a low-pressure input designed to receive a fuel , a high-pressure output designed to deliver pressurized fuel , at least one chamber designed to receive a piston , the piston being able to move and allowing the fuel in the high-pressure pump to be pressurized toward its high-pressure output , a valve including a valve head , the valve being designed to move from a first position to a second position , the second position making it possible to keep the fuel pressurized in order to be delivered into a common rail through its high-pressure output , the high-pressure pump being activated inter alia during a starting procedure of an internal combustion engine , the control method including the following consecutive steps when the internal combustion engine does not manage to start during the starting procedure:checking external parameters of the internal combustion engine, and then whether at least one external parameter is validated;measuring a physical parameter at the high-pressure output,applying an electrical detachment control signal as a replacement for the electrical control signal to the high- ...

Dual fuel common rail system

A dual fuel system for an engine (5) includes a plurality of fuel injectors (12) that each include an injector body (70) with a tip component (71) defining a plurality of gas nozzle outlets (90) and a plurality of liquid nozzle outlets (96) positioned for direct injection into one of the engine cylinders (7). Each of the fuel injectors (12) is fluidly connected to a gaseous fuel common rail through a quill (30) and an outer passage (49) defined between an inner tube (50) and an outer tube (40). Each of the fuel injectors (12) is fluidly connected to a liquid fuel common rail through the quill (30) and an inner passage (51) defined by the inner tube (50). Each combination of an inner tube (50) and outer tube (40) extend into the engine housing (6) between the quill (30) and one of the fuel injectors (12). Each of the inner tubes (50) extends through one of the outer tubes (40) and is compressed between a conical seat (38) on the quill (30) and a conical seat (38) on one of the fuel injectors ...

Control valve for a gas direkt injection fuel system

A control valve (10) for a gas direct injection fuel delivery system is provided. The control valve (10) comprises a valve body, a poppet (34) movably received within the valve body, and an actuator disposed within the valve body. The valve body has a first fluid path, a second fluid path, and a valve seat (28) providing fluid communication therebetween. The poppet (34) is capable of movement between a first position and a second position. When disposed in the first position, the poppet seals the valve seat to block fluid communication between the first fluid path and the second fluid path. The poppet (34) permits fluid communication between the first fluid path and the second fluid path as the poppet moves from the first position to the second position. The poppet (34) is configured so that a pressure in the first fluid path produces a force that tends to move the poppet (34) toward the second position and a pressure in the second fluid path produces a force that tends to move the poppet (34) toward the first position. The actuator is configured to transition between an activated and a de-activated state. The actuator prevents the poppet (34) from being disposed in the first position when in the de-activated state and the pressure in the second fluid path does not exceed the pressure in the first fluid path by at least a first pressure differential. The actuator permits the poppet (34) to be disposed in the first position when in the activated state.

PRESSURE REGULATOR FOR A RAIL HIGH-PRESSURE FUEL INJECTION SYSTEM

METHOD FOR MONITORING A PRESSURE SENSOR IN A DIRECT INJECTION SYSTEM

La présente invention concerne un procédé de surveillance d'un capteur de pression dans un système d'injection directe comprenant au moins une rampe commune, une pompe haute pression de carburant, un circuit hydraulique reliant la pompe haute pression à la rampe commune, une vanne de limitation de pression passive reliée au circuit hydraulique configurée pour s'ouvrir dès lors que la pression dans le circuit hydraulique est supérieure à une pression seuil de manière à évacuer du carburant, comprenant les étapes consistant à détecter une ouverture de la vanne de limitation de pression, mesurer de la pression Pmes correspondant à l'instant de l'ouverture de la vanne de limitation de pression et comparer la pression mesurée à la pression seuil P1 afin de détecter une dérive dudit capteur de pression. The present invention relates to a method for monitoring a pressure sensor in a direct injection system comprising at least one common rail, a high pressure fuel pump, a hydraulic circuit connecting the high pressure pump to the common rail, a valve passive pressure limiting valve connected to the hydraulic circuit configured to open when the pressure in the hydraulic circuit is greater than a threshold pressure so as to evacuate fuel, comprising the steps of detecting an opening of the pressure limiting valve. pressure, measure the pressure Pmes corresponding to the instant of opening of the pressure limiting valve and compare the pressure measured with the threshold pressure P1 in order to detect a drift of said pressure sensor.

FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Système d'alimentation en carburant (10) d'un moteur à combustion interne comportant une installation de transfert (14, 26) et une zone de pression (60, 62) alimentée par l'installation de transfert (14, 26).Le système d'alimentation en carburant (10) comporte au moins une installation de chauffage (58) et une installation de commande (56) qui commande l'installation de chauffage (58) lorsque l'installation de transfert (26) est arrêtée pour qu'une pression limite (pG) dans la zone de pression (60) ne soit pas dépassée vers le bas.

AN INTEGRATED ARRANGEMENT OF A VALVE AND A HIGH PRESSURE FUEL RAIL

Un agencement (60) d'une vanne (10) haute pression en bout de la rampe (12) commune d'un système d'injection de carburant, le canal haute pression (14) de la rampe débouchant à une extrémité de la rampe (12). L'agencement comprend un bouchon restricteur (22) agencé à l'extrémité de la rampe (12), l'orifice de sortie (24) restreignant la section du canal haute pression (14) et le siège (26) de vanne étant pourvus dans le bouchon restricteur (22), le canal de sortie (52) étant intégralement formé dans le corps (30) de vanne.

ACCUMULATOR FUEL INJECTION DEVICE AND INTERNAL COMBUSTION ENGINE WITH THE ACCUMULATOR FUEL INJECTION DEVICE

An accumulator fuel injection device and an internal combustion engine with the accumulator fuel injection device. In one embodiment, two actuators (88) and (89) are mounted on a high-pressure pump (8) for force-feeding a fuel in the engine with the common rail type fuel injection device. One (88) of these actuators (88) and (89) is stopped to force-feed the fuel from only the other (89) to match a timing at which a load torque acting on the crankshaft of the engine is maximized with a timing at which a load torque acting on the drive shaft of the high-pressure pump (8) is minimized.

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine whereby when a high pressure line is detected to be an abnormally high pressure, a feed pump is stopped, fuel of the lowest limit can be supplied to the engine, avoiding action can be performed, and a fuel pressure in the high pressure line can be surely decreased. SOLUTION: In this control device for an internal combustion engine, a pressure in the inside of a high pressure fuel pipe in the downstream of a high pressure pump 21 is detected by a fuel pressure sensor 28, in the case of this fuel pressure generating an abnormal pressure of prescribed value or more, so as to stop a feed pump 13, and a pressure in the inside of the high pressure fuel pipe 25 is surely decreased. Here, in the feed pump 13, at inoperative time of the pump 13, when a pressure difference generated between its upstream/ downstream is a prescribed value (for instance, 0.2 MPa) or more, a prescribed amount of fuel can be flown, so ...

Anordnung und Verfahren zur Nutzung von Bremsenergie in einem Kraftstoffsystem

Es ist eine Anordnung und ein Verfahren zur Nutzung von Bremsenergie in einem Kraftstoffsystem (1) offenbart. Eine Kraftstoffhochdruckpumpe (2) versorgt einen Kraftstoffhochdruckspeicher (4) mit einem entsprechenden unter Druck stehenden Kraftstoff. Mehrere Druckinjektoren (6) stehen in fluider Verbindung mit dem Kraftstoffhochdruckspeicher (4). Ein Druckspeicher (5) ist dem Kraftstoffhochdruckspeicher (4) vorund der Kraftstoffhochdruckpumpe (2) nachgeschaltet. Ein Ventilsystem (10) ist in einer Leitung (12) vom Druckspeicher (5) zum Kraftstoffhochdruckspeicher (4) vorgesehen, damit der Kraftstoffhochdruckspeicher (4) entsprechend bedarfsgerecht aus dem Druckspeicher (5) versorgbar ist.

Metering unit for controlling volume of fuel supplied to high pressure pump i.e. radial piston pump, of common-rail system of diesel engine, has one-way valve integrated into bearing and opening towards cover element or armature space

The metering unit (6) has a magnetic valve i.e. proportional valve, with an armature-plunger unit whose upper section (31) is inserted into a bearing (13) and partially arranged in a cover element (16). A one-way valve (24) is integrated into the bearing and opens in a direction towards the cover element or an armature space (25). The valve is constructed by a resilient washer (28) and a hole (27) i.e. through hole, formed in the bearing. The resilient washer is connected between the bearing and a housing portion (29) of the magnetic valve or between the bearing and the cover element.

Hydraulic conveying device i.e. fuel pump for storage/injection of fuel in internal combustion engine of car, has volume valve controlling flow of fluid from inlet to pumping element based on pressure prevailing in region of outlet

The device i.e. fuel pump (100) has an inlet (105) for receiving a fluid, and outlet (175) for ejecting the fluid, and a pumping element (140) for conveying the fluid from the inlet to the outlet. A volume valve (125) controls flow of the fluid from the inlet to the pumping element based on pressure prevailing in a region of the outlet, where the volume valve is controlled hydraulically. The volume valve increases the flow of fluid from the inlet to the pumping element when the pressure in the outlet region falls below a predetermined threshold.

Verfahren und Vorrichtung zur Korrektur von druckwellenbeeinflusster Kraftstoffeinspritzung

Kraftstoffeinspritzsystem (1) eines Verbrennungsmotors, wobei das Kraftstoffeinspritzsystem (1) umfasst:wenigstens einen Kraftstoffeinspritzaktuator (3), der ausgebildet ist, Kraftstoff in einen Zylinder (2) des Verbrennungsmotors einzuspritzen;eine Hochdruckkraftstoffversorgung, die ausgebildet ist, die Kraftstoffeinspritzaktuatoren (3) mit Kraftstoff zu versorgen; undeine Steuerlogik (12), die ein künstliches neuronales Netzwerk (12A) umfasst, das ausgebildet ist, Druckkorrekturdaten (pcd) zu berechnen, die zur Korrektur von Druckwellen, PW, verwendet werden, die von wenigstens einem Aktuator des Kraftstoffeinspritzsystems (1) erzeugt werden. A fuel injection system (1) of an internal combustion engine, the fuel injection system (1) comprising: at least one fuel injection actuator (3) which is designed to inject fuel into a cylinder (2) of the internal combustion engine; a high-pressure fuel supply which is designed to include the fuel injection actuators (3) To supply fuel; andcontrol logic (12) comprising an artificial neural network (12A) configured to calculate pressure correction data (pcd) used to correct pressure waves, PW, generated by at least one actuator of the fuel injection system (1) ,

Fuel injection valve and fuel injection device

It is equipped with an injector body 4z which has formed therein high-pressure paths 6az, 6bz, and 6cz through which high-pressure fuel flows to a spray hole and stores therein a piezo-actuator 2z (i.e., an opening/closing mechanism) and a back-pressure control mechanism 3z (i.e., an opening/closing mechanism) which open or close the spray hole, and a fuel pressure sensor 50z installed in the body 4z to measure the pressure of the high-pressure fuel. The body 4z has formed therein a branch path 6ez diverging from the high-pressure paths 6bz and 6cz to deliver the high-pressure fuel to the fuel pressure sensor 50z.

Method for operating an injection system of an internal combustion engine, an injection system for an internal combustion engine, and an internal combustion engine including an injection system

A method for operating an injection system of an internal combustion engine, including: providing the injection system includes a high pressure accumulator; regulating a high pressure in the high pressure accumulator in a normal operation by way actuating a low pressure-side suction throttle; regulating the high pressure in a first operating mode of safety operation by way of actuating at least one high pressure-side pressure control valve; carrying out a switchover from the normal operation into the first operating mode of safety operation if the high pressure reaches or exceeds a first limit pressure value; and carrying out a switchover from the first operating mode of safety operation into the normal operation if, starting from above a setpoint pressure value, the high pressure reaches or undershoots the setpoint pressure value, which is lower than the first limit pressure value.

Pressure limiting valve

연료 분사 시스템의 고압 커먼 레일을 위한 압력 조절기

... 본 발명은 내연기관 내로 연료를 분사하기 위한 시스템의 고압 커먼 레일을 위한 압력 조절기에 관한 것으로, 상기 압력 조절기는, 전자석(40)을 수용하는 솔레노이드 밸브 바디(10)를 포함하며, 상기 전자석은, 고압 유입부와 연결되어 배출 챔버(13) 내로 통하는 밸브 시트(30)를 폐쇄하는 니들(20)을 제어하고, 상기 배출 챔버는 배출 개구들(14)을 통해 액체 재순환 회로(5)와 연통되며, 상기 솔레노이드 밸브 바디(10)는 배면(12)에 솔레노이드(40)을 수용하고, 이 솔레노이드는 전기자(41)의 개방을 제어하며, 상기 전기자는 니들(20)과 고정 연결되어 폐쇄 리턴 스프링(25)에 의해 제어되며, 이때 솔레노이드 밸브 바디(10)의 전면(11)이 니들(20)의 축(XX) 상에 배출 챔버(13)를 가지며, 이 배출 챔버는 니들을 에워싸고 공동(15)을 관통하며, 상기 공동은 밸브 시트(30) 내로 통하는 보어(51)에 의해 축방향으로 관통되는 유입 밸브 바디(50)를 수용하며, 니들(20)에 의해 축방향으로 관통되는 배출 챔버(13) 및 액체 재순환 회로와 연결된 배출 개구들(14)은 배출 챔버(13)의 상부(132) 아래에서 배출 챔버 내 벽부(131) 내로 횡단하면서 통하며, 상기 압력 조절기는, 배출 챔버(13)의 바닥을 형성하며 중앙에 밸브 시트(30)를 갖는 밸브 바디(50)의 표면(54) 상부에서, 밸브 시트(30) 및 환형 불감 부피(70)를 형성하는 원추형 표면(31)의 연장부 내 배출 개구들(14)의 하부에 배출 챔버(13)의 환형 확장부(70)를 갖는 것을 특징으로 한다.

MEASURED FUEL RAIL PRESSURE ADJUSTMENT SYSTEMS AND METHODS

A system for a vehicle includes a pump control module, an adjustment determination module, and an adjusting module. The pump control module selectively disables pumping of a fuel pump that is driven by a spark ignition direct injection (SIDI) engine. A predetermined period after the pumping of the fuel pump is disabled, the adjustment determination module determines a pressure adjustment for a first fuel rail pressure measured using a fuel rail pressure sensor. The adjusting module generates a second fuel rail pressure based on the pressure adjustment and the first fuel rail pressure.

PRESSURE REGULATOR AND FUEL SUPPLY DEVICE

In a pressure regulator, a valve element nozzle is supported by a diaphragm, which partitions between an inlet portion and an outlet portion. The outlet portion includes an inner cover and an outer cover. The inner cover receives an adjusting spring in an inside space of the inner cover. A primary communication hole is formed in the inner cover to oppose the valve element nozzle, and a secondary communication hole is formed in the inner cover at a location, which is on a radially outer side of the primary communication hole. The outer cover covers the inner cover and thereby forms a fuel space, which is communicated with the inside space through the primary and secondary communication holes, at a location between the inner cover and the outer cover.

METHOD FOR DETERMINING AN OVER-PRESSURE IN A FUEL STORAGE MEANS OF AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

The invention relates to a method for determining an over-pressure in a fuel storage means of an injection system of an internal combustion engine, in particular in a common rail of a common rail system, wherein the pressure in the fuel storage means is detected, wherein an over-pressure in the fuel storage means is determined when the derivation of the detected pressure (210; 410) exceeds a pre-determined increase threshold (215) after time (t) and then the detected pressure (210; 410) exceeds a pre-determined pressure threshold (220; 420).

Fuel temperature determination method for common-Rail-fuel system of internal-combustion engine, involves determining value for electrical resistance of coil by using control device such that value for fuel temperature is derived

The method involves determining a value for electrical resistance of a coil by using a control device such that a value for the fuel temperature is derived, where the coil is utilized for controlling a fuel-passage-valve (2) and a fuel pressure valve (4), which lie in supply and return fuel lines of a common-rail. The control device controls the coil with a pulse width modulated supply voltage, and the value for the electrical resistance is determined from current flow and optionally from the control voltage, during one or multiple pulses. An independent claim is also included for a common-Rail-fuel system of an internal combustion engine.

Druck-Schaltventil für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine

Bei einem Druck-Schaltventil für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit einem Zylinder (42), in dem ein Verschlusskörper (44) zum wahlweisen Verschließen eines Einlasses (46) beweglich ist, ist der Verschlusskörper (44) mit einer ersten Wirkfläche (48) versehen, auf die hydraulischer Druck zum Öffnen des Einlasses (46) wirkt, und der Verschlusskörper (44) weist eine zweite Wirkfläche (50) auf, die größer als die erste Wirkfläche (48) gestaltet ist.

Engine Performance Modification or Tuning Kit

A performance modification/tuning kit 12 for an internal combustion engine 10 of the type comprises a kit control unit 40. An electrical sensor is adapted to detect the opening and closing signals of a control line to one of the injectors 18 of the engine and connected through a sensor line to the control unit. An input (I) receives the signal from a pressure sensor 30 of the common fuel rail 20 of the engine and an output (O) reports a generated pressure signal to the engine's ECU 14. A selectively changeable modification map, comprising modification values for a range of different engine speeds and fuel loads demanded by the ECU is used by the kit control unit to generate the generated pressure signal, which can either over or under report the actual pressure. That is generated in dependence upon the value in the modification map for the engine fuel load Q currently demanded by the ECU and the engine speed currently pertaining from time to time. The kit may also comprise a secondary fuel ...

Pulsation attenuation structure for fuel rail

연료 분사 시스템용 온-오프 밸브 및 고압 연료 펌프

... 본 발명은 원추형 측방 표면(58), 및 상기 측방 표면(58)을 넘어 반경방향으로 돌출되고 축방향으로 탄성적인, 반경방향으로 연장되는 스프링 돌출부(62)를 갖는 밸브 몸체(38)를 포함하는 온-오프 밸브(30)에 관한 것이다. 또한 본 발명은 펌프 케이싱(36)의 위치 설정 구멍(32)에 상기 유형의 온-오프 밸브(30)를 갖는 고압 연료 펌프(18)에 관한 것이다.

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE, INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE

A method for operating an internal combustion engine having an injection system which has a high-pressure accumulator, wherein a high pressure in the high-pressure accumulator is regulated via a suction throttle on the low-pressure side as a first pressure control member in a first high-pressure control loop, wherein in a normal operation a high-pressure disturbance variable is produced via a pressure control valve on the high-pressure side as a second pressure control member, via which fuel is redirected from the high-pressure accumulator to a fuel reservoir. For this purpose, the high pressure in a safety operation is regulated by the pressure control valve via a second high pressure control loop, or, in the safety operation, a maximum fuel volume flow is continuously redirected from the high pressure accumulator to the fuel reservoir via the pressure control valve. 110-. (canceled)11. A method for operating an internal combustion engine having an injection system with a high-pressure accumulator , the method comprising the steps of: regulating a high pressure in the high-pressure accumulator using a low-pressure-side suction throttle as a first pressure setting element a first high-pressure regulating loop; generating , in a normal operating mode , a high-pressure disturbance variable using of a high-pressure-side pressure regulating valve as a second pressure setting element by way of which fuel is discharged from the high-pressure accumulator into a fuel reservoir; and , in a protective operating mode , regulating the high pressure using the pressure regulating valve by way of a second high-pressure regulating loop , or permanently opening the pressure regulating valve in the protective operating mode.12. The method according to claim 11 , including setting a first operation type of the protective operating mode if the high pressure reaches or overshoots a first pressure threshold value claim 11 , wherein claim 11 , in the first operation type claim 11 , the ...

Motorstartverfahren

Verfahren zum Starten eines Motors (10), der eine Kraftstoffleiste (16) aufweist, umfassend, dass:ein Auslösungsereignis detektiert wird;eine Startanforderung eines Bedieners überwacht wird;ein Druck in der Kraftstoffleiste (16) überwacht wird;eine Nockenwelle (20) des Motors (10) mit einem Nockenphasensteller (24) oszilliert wird, wobei die Nockenwelle (20) während der Oszillation keine vollständige Drehung ausführt;eine Kraftstoffleistenpumpe (30) mit der oszillierenden Nockenwelle (20) betrieben wird, bis der überwachte Druck in der Kraftstoffleiste (16) ein minimales Niveau erreicht; undder Motor (10) gestartet wird, nachdem der überwachte Druck das minimale Niveau erreicht und eine Startanforderung des Bedieners vorliegt, dadurch gekennzeichnet, dassdann, wenn keine Startanforderung des Bedieners aufgetreten ist, und nachdem das minimale Niveau erreicht ist:die Kraftstoffleistenpumpe (30) mit der oszillierenden Nockenwelle (20) betrieben wird, bis der überwachte Druck in der Kraftstoffleiste ...

Inlet metering valve

ACCUMULATOR FUEL INJECTION DEVICE AND INTERNAL COMBUSTION ENGINE WITH THE ACCUMULATOR FUEL INJECTION DEVICE

일실시형태에서는, 커먼레일식 연료분사장치를 구비한 엔진에 있어서의 연료압송용 고압 펌프(8)에 2개의 액츄에이터(88,89)를 구비시킨다. 이들 액츄에이터(88,89) 중 한쪽(88)을 정지하고, 다른쪽(89)만으로 연료압송동작을 행함으로써, 엔진의 크랭크축에 작용하는 부하 토크가 극대로 되는 타이밍과 고압 펌프(8)의 구동축에 작용하는 부하 토크가 극소로 되는 타이밍을 일치시킨다. In one embodiment, two actuators 88 and 89 are provided in the high pressure pump 8 for fuel pressure in an engine provided with a common rail fuel injection device. By stopping the one side 88 of these actuators 88 and 89 and performing fuel pressure operation only on the other side 89, the timing at which the load torque acting on the crankshaft of the engine is maximized and the high pressure pump 8 The timing at which the load torque acting on the drive shaft is minimized is matched.

Dual Fuel Common Rail System And Engine Using Same

A dual fuel system for an engine includes a plurality of fuel injectors that each include an injector body with a tip component defining a plurality of gas nozzle outlets and a plurality of liquid nozzle outlets positioned for direct injection into one of the engine cylinders. Each of the fuel injectors is fluidly connected to a gaseous fuel common rail through a quill and an outer passage defined between an inner tube and an outer tube. Each of the fuel injectors is fluidly connected to a liquid fuel common rail through the quill and an inner passage defined by the inner tube. Each combination of an inner tube and outer tube extend into the engine housing between the quill and one of the fuel injectors. Each of the inner tubes extends through one of the outer tubes and is compressed between a conical seat on the quill and a conical seat on one of the fuel injectors.

Pressure Control Valve Arrangement for a Fuel Line

The present invention concerns a pressure control valve system for a fuel line with a pressure line with a pressure control valve for maintaining a fuel pressure in the fuel line and a filling line for filling the fuel line with fuel, wherein an inlet of the pressure line is connected to an outlet of the filling line using fluid technology. 2. Pressure control valve system according to claim 1 , wherein an inlet of the filling line is decoupled from an outlet of the fuel line using fluid technology or an inlet of the filling line is connected to an outlet of the pressure line using fluid technology.3. Pressure control valve system according claim 1 , wherein a flow-through direction of the filling line is disposed opposite to a flow-through direction of the pressure line using fluid technology.4. Pressure control valve system according to claim 1 , wherein the pressure control valve is a ball check valve.5. Pressure control valve system according to claim 1 , wherein the filling line has a check valve having a direction of opening opposite to a direction of opening of the pressure control valve.6. Pressure control valve system according to claim 1 , wherein the filling line has an orifice element to reduce a flow cross-section of the filling line.7. Pressure control valve system according to claim 1 , wherein the filling line is a capillary line.8. Pressure control valve system according to claim 1 , wherein the pressure control valve system has a molded part in which the pressure line and the filling line are formed.9. Pressure control valve system according to claim 8 , wherein the molded part comprises a first molded subcomponent in which first sections of the pressure line and of the filling line are formed claim 8 , and also comprises a second molded subcomponent in which second sections of the pressure line and of the filling line are formed.10. Pressure control valve system according to claim 8 , wherein the molded part is set into a housing or is an integral ...

Pump Unit for a High-Pressure Pump

A pump unit includes a pump housing having a low-pressure inlet and a high-pressure outlet. A working medium is fed via the low-pressure inlet to a working chamber formed in the pump housing. The working medium is discharged from the working chamber via the high-pressure outlet. The pump unit also includes a pump piston channel formed in the pump housing and having a longitudinal axis. The pump unit has a first pump piston arranged movably along the longitudinal axis in the pump piston channel and coupled hydraulically to the working chamber. The pump unit also has a second pump piston arranged movably along the longitudinal axis in the pump piston channel and coupled hydraulically via a compensation volume to the first pump piston, wherein the compensation volume is coupled hydraulically to a compensation unit configured to adapt the compensation volume based on a pressure in the working chamber.

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 ...

Processing system and method for calculating pressure decreases due to injection events in a high-pressure fuel system

A system and method is provided to analyze an intermediate pressure signal portion between an end of an injection event signal portion and a start of a subsequent injection event signal portion. The analysis is simplified by identifying a plurality of single cycle windows and calculating a single value, such as a mean or a median, for each of the windows. An intermediate portion single value is determined by averaging the single values for each of the windows. The intermediate portion single value may then be used to identify pumping events or leakage errors that occur during the intermediate pressure signal portion that affect further analysis of the intermediate pressure signal portion.

METHOD FOR OPERATING A DUAL FUEL INJECTION SYSTEM

A method of operating an engine with dual fuel injection capabilities to address fuel rail over-pressure due to stagnating hot fuel is shown. The method comprises operating an engine cylinder with only port injection, and selectively activating and deactivating the second injector in response to a rail pressure increase of a fuel rail, the fuel rail coupled to the second injector, and deactivating the second injector in response to a rail pressure decrease of the fuel rail to a lower threshold determined based on engine operating conditions. In this way, degradation of the second injector may be reduced while maintaining a desired level of engine performance. 1. A method , comprising:while operating an engine cylinder with fuel from only a first injector;transiently activating the second injector to inject fuel into the cylinder in response to a fuel pressure increase at a fuel rail coupled to the second injector; anddeactivating the second injector in response to a fuel pressure decrease at the fuel rail below a lower threshold, the lower threshold adjusted based on one or more engine operating conditions.2. The method of claim 1 , wherein the transiently activating includes activating the second injector in response to the fuel pressure increase at the fuel rail above an upper threshold claim 1 , the upper threshold based on fuel rail rigidity.3. The method of claim 2 , wherein the fuel rail coupled to the second injector is a second fuel rail different from a first fuel rail coupled to the first injector.4. The method of claim 3 , wherein each of the first and second fuel rails are pressurized by a common high pressure fuel pump claim 3 , and wherein during the transiently activating and deactivating claim 3 , a fuel flow from the high pressure fuel pump to the second fuel rail is disabled.5. The method of claim 4 , wherein the lower threshold is adjusted to remain above a pressure at which the fuel flow from the high pressure fuel pump to the second fuel rail is ...

Vented High Pressure Valve

A valve assembly for a fuel pump is disclosed. In certain aspect, the valve assembly includes a housing defining a valve chamber, a valve inlet in fluid communication with the valve chamber, a valve outlet in fluid communication with the valve chamber, a valve seat; a valve body movably disposed within the valve chamber, a retainer sealingly engaging the housing and defining a cavity between the base portion of the valve body and the retainer, wherein the retainer comprises one or more control orifices formed therein and configured to provide fluid communication to the cavity to regulate a position of the valve body based on at least a pressure difference between the valve chamber and the cavity, and a spring member disposed between the retainer and the valve body, wherein the spring member is configured to bias the valve body. 1. A valve assembly comprising:a housing defining a valve chamber, wherein the valve chamber comprises a first end and a second end opposite the first end;a valve inlet disposed adjacent the first end of the valve chamber and in fluid communication therewith, wherein the valve chamber is configured to receive a flow of fluid from the valve inlet;a valve outlet in fluid communication with the valve chamber to receive a flow of fluid from the valve chamber;a valve seat fixedly disposed at the first end of the valve chamber;a valve body movably disposed within the valve chamber, the valve body comprising a valve head and a base portion;a retainer sealingly engaging the housing and defining a cavity between the base portion of the valve body and the retainer, wherein the retainer comprises one or more control orifices formed therein and configured to provide fluid communication to the cavity to regulate a position of the valve body between the first end and the second end of the valve chamber based on at least a pressure difference between the valve chamber and the cavity; anda spring member disposed between the retainer and the valve body, ...

Method for Operating a Fuel Injection System with Pressure Reduction, and a Fuel Injection System Comprising a Fuel Injection Valve with a Servo Valve

A method for operating a fuel injection system with pressure reduction, and a fuel injection system that includes a fuel injection valve with a servo valve are provided. The method for operating a fuel injection system includes performing a desired pressure reduction in the pressure accumulator using at least one fuel injection valve of the fuel injection system. This is achieved by opening a servo valve in the fuel injection valve, which is opened, during a pressure reduction phase, just wide enough that the actual closing element remains closed and as a result no fuel injection process takes place. 1. A method for operating a fuel injection system of an internal combustion engine having a pressure reservoir , at least one injection valve in which a piezoelectric actuator actuates a servo valve arranged in a servo valve space counter to the force of a closing spring such that a closure element opens an injection opening connected to the pressure reservoir by a fuel line , and a feedforward and feedback control unit , that the method comprising:using an active piezoelectric region of the piezoelectric actuator to actuate the servo valve;using a passive piezoelectric region of the piezoelectric actuator as a force sensor;using the force sensor to determine a force acting on the passive piezoelectric region when the servo valve is opened, the determination of the force taking into account a closing spring force applied by the closing spring;determining a pressure in the servo valve space based on the determined force acting on the passive piezoelectric region; andwhen a pressure reduction is required in the pressure reservoir, activating the active piezoelectric region to open the servo valve to reduce the pressure but without reaching a servo valve space pressure corresponding to an opening of the closure element.2. The method of claim 1 , wherein the pressure reduction is performed in a phase in which no injection is taking place.3. The method of claim 1 , wherein ...

Method and apparatus for correction of pressure wave affected fuel injection

A fuel injection system ( 1 ) of a combustion engine includes: at least one fuel injection actuator ( 3 ) to inject fuel into a cylinder ( 2 ) of the combustion engine, a high pressure fuel supply system to supply the fuel injection actuators ( 3 ) with fuel, and a control logic device ( 12 ) including an artificial neural network ( 12 A) to calculate pressure correction data (pcd) used to correct pressure waves, PW, generated by at least one actuator of the fuel injection system ( 1 ).

Diesel Common-Rail Piezo-Operated Servo Injector

Various embodiments may include a method for operating a diesel-common-rail piezo-operated servo injector comprising: partially charging the piezo-actuator from a non-charged state at 0 V (method a); partially discharging the piezo-actuator from an already charged state to a remaining limited charge (method b); measuring the piezo-voltage with both methods and comparing the results; when the comparison demonstrates correspondence within a predefined threshold, using method b in ranges in which method a cannot be carried out; and when the comparison does not demonstrate correspondence within the predefined threshold, using method a without using method b. 1. A method for operating a diesel-common-rail piezo-operated servo injector in which a piezo-actuator opens and closes a nozzle needle by means of a servo valve , the method comprising:partially charging the piezo-actuator from a non-charged state at 0 V (method a);partially discharging the piezo-actuator from an already charged state to a remaining limited charge (method b);measuring the piezo-voltage with both methods and comparing the results;determining a voltage for the piezo-actuator for each operating point so that the piezo-actuator applies a force necessary for contact with the servo valve without influencing the injection process itself by opening the servo valve;when the comparison demonstrates correspondence within a predefined threshold, using method b in ranges in which method a cannot be carried out; andwhen the comparison does not demonstrate correspondence within the predefined threshold, using method a without using method b.2. The method as claimed in claim 1 , further comprising switching to and fro between method a and method b during a specific injection process throughout one engine cycle.3. The method as claimed in claim 1 , further comprising measuring the force during a specific main injection.4. The method as claimed in claim 1 , further comprising measuring the force during times at ...

Pressure limiting valve

A high pressure container arrangement includes a reservoir having an outer wall and an over pressure relief orifice through which high pressure fluid may flow when the fluid pressure inside the reservoir exceeds a predetermined pressure threshold. The high pressure container arrangement also includes a pressure limiting valve having a housing in which is arranged a closing member permanently biased by a spring toward a closed position and, when the pressure in the reservoir exceeds the predetermined threshold the closing member is pushed in an open position. The housing of the pressure limiting valve is integral to the wall of the reservoir.

Processing system and method for calculating pressure decreases due to injection events in a high-pressure fuel system

A system and method is provided to analyze an intermediate pressure signal portion between an end of an injection event signal portion and a start of a subsequent injection event signal portion. The analysis is simplified by identifying a plurality of single cycle windows and calculating a single value, such as a mean or a median, for each of the windows. An intermediate portion single value is determined by averaging the single values for each of the windows. The intermediate portion single value may then be used to identify pumping events or leakage errors that occur during the intermediate pressure signal portion that affect further analysis of the intermediate pressure signal portion.

Common-Rail-System

The invention relates to a common rail system for an internal combustion engine of a vehicle, comprising a high-pressure pump which delivers highly pressurized fuel to a high-pressure accumulator, from which the fuel is fed to at least one injection valve of the internal combustion engine, a low-pressure pump for conveying fuel from a fuel container via a conveying line to the high-pressure pump, a flow control valve as an electromagnetic switching valve which is arranged in the conveying line for controlling the fuel quantity which is fed by the high-pressure pump to the high-pressure accumulator; it is provided according to the invention that the flow control valve is configured as a ball seat valve with an inlet opening which is connected to the low-pressure pump and an outlet opening which is connected to the high-pressure pump, which ball seat valve is open in the de-energized state.

DIRECT INJECTION FUEL SYSTEM WITH CONTROLLED ACCUMULATOR ENERGY STORAGE AND DELIVERY

A direct injection (DI) fuel supply system includes an accumulator valve coupled to a high pressure fuel line at a position between an accumulator and a fuel rail. A controller of the DI fuel supply system is configured to control the accumulator valve to maintain the pressurized fuel housed in the fuel rail at a desired pressure and to control the accumulator valve proximate a fuel injection event by a fuel injector such that the accumulator supplies the fuel rail with approximately the portion of the pressurized fuel injected by the fuel injector during the fuel injection event. This positioning of the accumulator valve between the DI positive displacement fuel pump and the fuel rail together with active control thereof also insulates the fuel rail and the fuel injector from fuel pressure pulsations generated by the DI positive displacement fuel pump. 1. A direct injection (DI) fuel supply system for an engine of a vehicle , the DI fuel supply system comprising:a fuel rail in fluid communication with a high pressure fuel line and configured to house pressurized fuel;a fuel injector configured to inject at least a portion of the pressurized fuel housed in the fuel rail into the engine;a DI positive displacement fuel pump driven by a crankshaft of the engine, the DI positive displacement fuel pump in fluid communication with and configured to supply the pressurized fuel to the high pressure fuel line;an accumulator fluidly coupled to the high pressure fuel line at a position between the fuel rail and the fuel pump, the accumulator configured to house the pressurized fuel;an accumulator valve positioned in the high pressure fuel line at a location between the accumulator and the fuel rail, the accumulator valve configured to regulate the flow of the pressurized fuel from both the DI fuel pump and the accumulator to the fuel rail; anda controller configured to control the accumulator valve to maintain the pressurized fuel housed in the fuel rail at a desired pressure. ...

On-Off Valve For A Fuel Injection System, And High-Pressure Fuel Pump

Various embodiments include a valve comprising a valve body including a valve seat; and a valve element movable along a longitudinal axis to close the on-off valve by sealing against the valve seat. The valve body includes a conical lateral surface. The valve body includes a radially extending spring projection which is resilient in an axial direction and projects radially beyond the lateral surface. 1. An on-off valve for a fuel injection system of an internal combustion engine , the valve comprising:a valve body including a valve seat; anda valve element movable along a longitudinal axis to close the on-off valve by sealing against the valve seat;wherein the valve body includes a conical lateral surface; andthe valve body includes a radially extending spring projection which is resilient in an axial direction and projects radially beyond the lateral surface.2. The on-off valve as claimed in claim 1 , wherein:the valve body comprises, on the lateral surface, a radial annular outlet groove dividing the valve body into a first conical ring element and a second conical ring element;a first lateral surface of the first conical ring element and a second lateral surface of the second conical ring element both enclose a single opening angle with respect to the longitudinal axis.3. The on-off valve as claimed in claim 2 , wherein:the first ring element comprises the spring projectionthe spring projection includes a radial bearing surface and a runout surface opposite the bearing surface; andthe spring projection is arranged obliquely to the longitudinal axis and merges into the annular outlet groove.4. The on-off valve as claimed in claim 2 , wherein:the first ring element comprises that the valve seat and a valve inlet; andthe valve inlet comprises an axial hole in the first ring element.5. The on-off valve as claimed in claim 2 , wherein:the first ring element comprises, on the first lateral surface, a first encircling seal groove containing a sealing element;the second ...

METHOD FOR CALCULATING ONE-DIMENSIONAL SPATIAL FLUCTUATION IN UNBRANCHED HIGH-PRESSURE FUEL PIPE OF COMMON RAIL SYSTEM

An objective of the disclosure is to provide a method for calculating a one-dimensional (1D) spatial fluctuation in an unbranched high-pressure fuel pipe of a common rail system. The method includes the following steps: dividing a flow in the unbranched high-pressure fuel pipe according to a spatial length into sections for solving, to obtain forward and reverse pressure fluctuation forms; iteratively calculating forward and reverse pressure fluctuations propagating in a fuel pipe model to obtain fluctuations of various sections of the fuel pipe from an inlet to an outlet within one step, and calculating a flow velocity at a corresponding position in the pipe; and extracting a corresponding flow rate of the system, and substituting into an iterative calculation of the overall system to obtain an output pressure. 4. The method for calculating a 1D spatial fluctuation in an unbranched high-pressure fuel pipe of a common rail system according to claim 1 , wherein in step (3) claim 1 , a flow velocity v(L*) at any spatial position in the high-pressure fuel pipe is used to extract a corresponding flow rate claim 1 , and the flow rate is substituted into an iterative calculation of the system claim 1 , to output the system's pressure at any time. This application claims the priority of Chinese Patent Application No. CN201911388094.3, entitled “Method for Calculating One-Dimensional Spatial Fluctuation in Unbranched High-Pressure Fuel Pipe of Common Rail System” filed with the China National Intellectual Property Administration on Dec. 30, 2019, which is incorporated herein by reference in its entirety.The disclosure relates to a method for calculating a pressure fluctuation in a fuel pipe of a diesel engine.In recent years, the reliability of the diesel engine has become more and more important. The injection pressure of the common rail system is not less than 80-100 MPa. In order to meet higher requirements, the injection pressure is much higher. Therefore, the high- ...

FUEL PRESSURE CONTROL DEVICE

A fuel pressure control device determines whether it is during a descending period of a plunger descending or an ascending period of the plunger ascending, and puts a first drive mechanism and a second drive mechanism in an energized state during the descending period and in a non-energized state during the ascending period, when there is a pressure reduction request to lower a fuel pressure in a high-pressure passage. 1. A fuel pressure control device comprising:a low-pressure pump configured to suck fuel in a fuel tank;a low-pressure passage configured to receive the fuel supplied from the low-pressure pump;a high-pressure pump configured to pressurize the fuel supplied from the low-pressure passage;a high-pressure passage configured to receive the fuel supplied from the high-pressure pump; the high-pressure pump including', 'a cylinder,', 'a plunger configured to ascend and descend inside the cylinder in conjunction with driving of the internal combustion engine,', 'a compressing chamber having a capacity decreased by the plunger ascending and increased by the plunger descending,', 'a suction passage configured to provide communication between the low-pressure passage and the compressing chamber;', 'a discharge passage configured to provide communication between the compressing chamber and the high-pressure passage,', 'a first control valve provided in the suction passage, the first control valve being configured to permit or prohibit communication of the fuel between the low-pressure passage and the compressing chamber,', 'a second control valve provided in the discharge passage, the second control valve being configured to permit communication of the fuel from the compressing chamber to the high-pressure passage, and the second control valve being configured to restrict communication of the fuel from the high-pressure passage to the compressing chamber,', 'a first drive mechanism configured to open or close the first control valve by energization control, and', ...

Control system including control device for internal combustion engine

A control system includes an internal combustion engine and a control device. The internal combustion engine includes a pressurization device. The pressurization device includes a housing having a cylindrical shape, a piston, a pressurization chamber, a piston chamber, a pressurization control chamber, and a switching device configured to selectively connect the pressurization control chamber with a high pressure fuel channel or a low pressure fuel channel. The control device estimates the temperature of the low pressure fuel channel, When the estimated temperature of the low pressure fuel channel is lower than the temperature of the pressurization device, and the temperature of the pressurization device is higher than a predetermined cooling request temperature, the control device controls the switching device to connect the pressurization control chamber with the low pressure fuel channel.

PULSATION DAMPENING STRUCTURE FOR FUEL RAIL

The present disclosure relates to a pulsation dampening structure for a vehicle. The pulsation dampening structure includes a fuel rail, a rail plug disposed at an end portion of the fuel rail, and a pulsation dampening part disposed on the rail plug to dampen pulsation generated when fuel enters. A turbulent flow is caused by reflecting fuel which was entered, and a vortex is generated in the fuel, thereby dampening pulsation. 1. A pulsation dampening structure for a vehicle , comprising:a fuel rail;a rail plug disposed at an end portion of the fuel rail; anda pulsation dampening part disposed on the rail plug to dampen pulsation generated when fuel enters the fuel rail.2. The pulsation dampening structure of claim 1 , wherein the rail plug comprises:a plug body inserted into and coupled to the end portion of the fuel rail; anda fuel reflecting part disposed on the plug body in an inflow direction of the fuel and concavely formed in the inflow direction of the fuel such that the fuel that enters along the fuel rail is reflected and concentrated.3. The pulsation dampening structure of claim 2 , wherein the pulsation dampening part comprises:a turbulent flow generating portion disposed in the inflow direction of the fuel reflecting part to generate a vortex in the fuel reflected on the fuel reflecting part; anda coupling bridge connected to the turbulent flow generating portion for coupling the turbulent flow generating portion and the plug body with each other.4. The pulsation dampening structure of claim 3 , wherein the turbulent flow generating portion is concavely formed in the direction of the fuel reflecting part to reflect the fuel claim 3 , which is reflected on the fuel reflecting part claim 3 , to form a vortex.5. The pulsation dampening structure of claim 3 , wherein the coupling bridge comprises:a first bending portion formed to protrude from the turbulent flow generating portion in a radial direction and bent in a direction toward the rail plug;an ...

FUEL PRESSURE CONTROL FOR ENGINE FUEL SYSTEMS

An apparatus includes an input module structured to interpret a fuel pressure command indicative of a target fuel pressure within an accumulator and a target fuel injection characteristic, a pump module structured to control a pump assembly to provide fuel to the accumulator to maintain the target fuel pressure within the accumulator, an injector module structured to control a plurality of fuel injectors to inject fuel into an engine based on the target fuel injection characteristic, a pressure module structured to interpret pressure data regarding an actual fuel pressure within the accumulator and to determine a pressure difference between the target fuel pressure and the actual fuel pressure, and a modulation module structured to determine a final fuel injection command responsive to the pressure difference exceeding a first magnitude threshold where the final fuel injection command is based on the pressure difference and the target fuel injection characteristic. 1. An apparatus , comprising:an injector circuit structured to control a plurality of fuel injectors to inject fuel into an engine based on a target fuel injection characteristic;a pump circuit structured to determine an operating condition of an inlet metering valve (IMV) of a pressure pump assembly structured to provide fuel to the plurality of fuel injectors; anda modulation circuit structured to modulate a final fuel injection command responsive to the operating condition of the IMV, wherein the final fuel injection command is based on the operating condition of the IMV and the target fuel injection characteristic.2. The apparatus of claim 1 , wherein the operating condition of the IMV is a saturation condition in which the IMV is at a full operating condition for a time that exceeds a time threshold.3. The apparatus of claim 1 , wherein the pump circuit is structured to determine the operating condition of the IMV based on a pump command sent to the IMV claim 1 , wherein the pump command includes one ...

Integrated Arrangement of a high-Pressure Valve and an Injection Rail

An arrangement of a high-pressure valve at the end of a common rail of a fuel injection system, a high-pressure channel of the rail opening out at one extremity of the rail, includes a throttle stopper arranged at the extremity of the rail. An output orifice restricts a section of the high-pressure channel and a valve seat is positioned in the throttle stopper. The output channel is fully formed inside the valve body. 1. (canceled)2. The arrangement as claimed in claim 11 , wherein the arrangement also includes a chamber inside the body arranged such as to receive the fuel discharged from the output orifice claim 11 , the output channel extending from the chamber and passing through the body.3. The arrangement as claimed in claim 2 , wherein the output channel extends radially through the body.4. The arrangement as claimed in claim 11 , wherein the valve is an active valve claim 11 , the blocking member cooperating with an actuator.5. The arrangement as claimed in claim 11 , wherein the blocking member is a needle with a pointed extremity designed to cooperate with the seat.6. The arrangement as claimed in claim 11 , wherein the blocking member includes a push rod acting on a ball designed to cooperate with the seat.7. The arrangement as claimed in claim 11 , wherein the valve body is provided with attachment means enabling the valve to be rigidly connected to the rail.8. The arrangement as claimed in claim 7 , wherein the valve is clipped to the end of the rail.9. The arrangement as claimed in claim 8 , wherein the valve can be turned in relation to the rail to adjust the angular orientation of same.10. (canceled)11. An arrangement of a high-pressure valve at one extremity of a common rail of a fuel injection system claim 8 , a high-pressure channel of the rail opening out at the extremity of the rail claim 8 , the arrangement comprising:a body;a blocking member within the body, the blocking member being moveable along a main axis such that the blocking member ...

INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE AND AUTOMOTIVE VEHICLE INCLUDING SUCH AN INJECTION SYSTEM

A fuel injection system of an internal combustion engine includes: an injector having a hydraulic control chamber controlling the delivery of fuel through the injector, an actively controlled first valve system controlling the pressure relief from the control chamber, movable between: a first position in which the first valve system closes the injector by deterring the pressure from being relieved from the control chamber through the first relief circuit, and a second position in which the first valve system opens the injector by allowing the pressure to be relieved from the control chamber through the first relief circuit. A second relief circuit allows the pressure to be relieved from the control chamber through the second relief circuit. The second relief circuit includes a second valve system passively controlled by the fuel pressure and movable between two positions deterring or allowing the pressure to be relieved from the control chamber through the second relief circuit. 222. Fuel injection system according to claim 1 , wherein the first valve system includes a first directional control valve () having a first port designed to be connected to a high pressure fuel source.3. Fuel injection system according to claim 1 , wherein the first relief circuit includes a first relief line having a first flow resistance for controlling the flow rate of the fuel relieved from the control chamber.4. Fuel injection system according to claim 3 , wherein during a first injection phase in which the pressure is relieved from the control chamber through the first relief circuit and in which the second valve system deters the pressure from being relieved from the control chamber through the second relief circuit claim 3 , a first speed of increase of the injection rate is determined by the first flow resistance.5. Fuel injection system according to claim 1 , wherein the second relief circuit includes a second relief line (B) having a second flow resistance for controlling the ...

FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE

The pressure of the fuel is increased at a constant pressure intensification ratio after operating the pressure reducing device so that the pressure difference between the fuel passage and the control chamber after the operation has a value smaller than the predetermined pressure difference, if the required pressure of the fuel is higher than a reference pressure and lower than a pressure obtained by multiplying the reference pressure by a constant pressure intensification ratio. 1. A fuel injection apparatus for an internal combustion engine , comprising:a fuel injection valve configured to inject fuel by opening an injection hole in accordance with movement of a needle;a high pressure fuel retaining unit configured to supply the fuel at a reference pressure to the fuel injection valve;a fuel passage which is communicated with the injection hole from the high pressure fuel retaining unit;an opening/closing device which includes a control chamber connected to the fuel passage and a pressure reducing device for lowering a pressure of the fuel contained in the control chamber as compared with a pressure of the fuel contained in the fuel passage and configured to move the needle in a direction to open the injection hole if a pressure difference between the pressure of the fuel contained in the fuel passage and the pressure of the fuel contained in the control chamber is not less than a predetermined pressure difference;a pressure intensifying device which is connected to the fuel passage and configured to increase the pressure of the fuel contained in the fuel passage at a constant pressure intensification ratio; anda controller comprising at least one processor configured to increase the pressure of the fuel contained in the fuel passage by means of the pressure intensifying device after operating the pressure reducing device so that the pressure difference after the operation has a value smaller than the predetermined pressure difference, if the pressure of the fuel ...

FUEL PRESSURE CONTROL FOR ENGINE FUEL SYSTEMS

An apparatus includes an input module structured to interpret a fuel pressure command indicative of a target fuel pressure within an accumulator and a target fuel injection characteristic, a pump module structured to control a pump assembly to provide fuel to the accumulator to maintain the target fuel pressure within the accumulator, an injector module structured to control a plurality of fuel injectors to inject fuel into an engine based on the target fuel injection characteristic, a pressure module structured to interpret pressure data regarding an actual fuel pressure within the accumulator and to determine a pressure difference between the target fuel pressure and the actual fuel pressure, and a modulation module structured to determine a final fuel injection command responsive to the pressure difference exceeding a first magnitude threshold where the final fuel injection command is based on the pressure difference and the target fuel injection characteristic. 1. An apparatus , comprising:an input module structured to interpret a fuel pressure command indicative of a target fuel pressure within an accumulator and a target fuel injection characteristic;a pump module structured to control a pump assembly to provide fuel to the accumulator to maintain the target fuel pressure within the accumulator;an injector module structured to control a plurality of fuel injectors to inject fuel into an engine based on the target fuel injection characteristic;a pressure module structured to interpret pressure data regarding an actual fuel pressure within the accumulator and to determine a pressure difference between the target fuel pressure and the actual fuel pressure; anda modulation module structured to determine a final fuel injection command responsive to the pressure difference exceeding a first magnitude threshold, wherein the final fuel injection command is based on the pressure difference and the target fuel injection characteristic.2. The apparatus of claim 1 , ...

REINFORCED END CAP ASSEMBLY FOR PRESSURE VESSEL

A fuel rail or pressure vessel assembly extends along a longitudinal axis and includes a fluid conduit having an opening at either or both of the longitudinal ends of the conduit. The conduit has an inlet coupled to a high-pressure fuel source, a plurality of outlets, and a conduit interior that forms a fluid flow passageway between inlet and outlets. An end cap assembly is mounted to cover and close each fluid conduit opening. The end cap assembly includes a cup having a free edge that defines an aperture that leads to a cup interior. The cup has an inner surface facing the conduit interior. The end cap assembly also includes a reinforcement that is mounted to the inner surface of the cup. Both the cup and the reinforcement can be stamped metal components and are brazed together. 1. A fuel rail assembly , comprising:a fluid conduit extending along a first longitudinal axis and having a body portion with inside and outside surfaces, said conduit having an opening at one of first and second longitudinal ends thereof, said fluid conduit further having an inlet configured to be coupled to a high-pressure fuel pump, at least one outlet, and a conduit interior forming a fluid flow passageway between said inlet and said at least one outlet configured to allow for fluid communication therebetween; a cup having a free edge that defines an aperture that leads to a cup interior, said cup having an inner surface facing said cup interior; and', 'a reinforcement mounted to said inner surface of said cup., 'an end cap assembly mounted to said fluid conduit and configured to cover and close said opening, said end cap assembly including2. The fuel rail assembly of wherein said cup includes a base and an annular sidewall axially extending away from said base in a first direction claim 1 , said annular sidewall having said free edge.3. The fuel rail assembly of wherein said body portion comprises an outer wall having said inside and outside surfaces wherein said inside surface a ...

METHOD FOR OPERATING AN ARRANGEMENT FOR USING WASTE HEAT

Method for operating an arrangement for using waste heat of an internal combustion engine, wherein the internal combustion engine has an exhaust gas duct and the arrangement for using waste heat has a circuit conveying a working medium. In the circuit are arranged, in the flow direction of the working medium, a pump, at least one evaporator, an expansion machine and a condenser. The at least one evaporator is also arranged in the exhaust gas duct, wherein in the at least one evaporator an exhaust gas expelled from the internal combustion engine is used as a heat source, and thus the working medium is evaporated in the evaporator. The method according to the invention detects, inside the at least one evaporator, a leakage of the working medium into the exhaust gas duct. 1101121011203040506011304023040304030402. A method for operating an arrangement for using waste heat () of an internal combustion engine () , wherein the internal combustion engine () has an exhaust gas channel () , and the arrangement for using waste heat () has a circuit () conducting a working medium , wherein a pump () , at least one evaporator ( , ) , an expansion machine () and a condenser () are arranged in a direction of flow of the working medium in the circuit () , wherein the at least one evaporator ( , ) is also arranged in the exhaust gas channel () , and wherein , in the at least one evaporator ( , ) , an exhaust gas output by the internal combustion engine is used as as a heat source , and the working medium is thereby evaporated in the at least one evaporator ( , ) , the method comprising determining a leakage of the working medium within the at least one evaporator ( , ) into the exhaust gas channel () from a measured physical value.2113040. The method as claimed in claim 1 , characterized in that the leakage is determined by measuring a temperature of the working medium in the circuit () downstream of the at least one evaporator ( claim 1 , ) claim 1 , and comparing said temperature ...

PRESSURE REGULATOR FOR A HIGH-PRESSURE RAIL OF A FUEL INJECTION SYSTEM

The invention relates to a pressure regulator for a high-pressure ramp of a system for injecting fuel into an internal combustion engine, comprising a solenoid valve element () which receives an electromagnet (). The electromagnet controls a needle () that closes a valve seat () which is connected to a high-pressure inlet and opens into a discharge chamber (), said discharge chamber communicating with a liquid recirculation system () by means of outlet openings (). The rear face () of the solenoid valve element () receives a coil () which controls the opening process of an armature () that is rigidly connected to the needle () and is subject to a closing return spring (). The discharge chamber () is located on the front face () of the solenoid valve element () on the axis (XX) of the needle (), and the discharge chamber surrounds the needle. A cavity () passes through the discharge chamber, said cavity receiving an inlet valve element (), and a bore () which opens into the valve seat () passes axially through the inlet valve element. The discharge chamber () through which the needle () passes axially and the outlet openings () which are connected to the liquid recirculation system open transversally into a wall () in the discharge chamber () below the upper part () of the chamber. The regulator is characterized that the regulator comprises an annular expansion () of the discharge chamber () below the outlet openings () along the extension of a conical surface (), which forms the valve seat () and an annular dead volume (), above the surface () of the valve element (), which forms the base of the discharge chamber () and has the valve seat () in the center of the valve element. 27013545014. The pressure regulator as claimed in claim 1 , characterized in that the dead volume () has the following dimensional features: a diameter D(D claim 1 , D) greater than a diameter Dof the discharge chamber claim 1 , an axial length (L) smaller than or equal to an axial length of ...

FUEL PRESSURE REGULATOR

A fuel pressure regulator includes a fuel inlet; a fuel outlet; a seating surface; and a valve member assembly. The valve member assembly includes a poppet and also includes a sealing member which is made of an elastomer material and which is annular in shape and including a sealing member surface. The sealing member is supported by the poppet. The valve member assembly is moveable between 1) a closed position in which the sealing member surface engages the seating surface, thereby preventing fuel flow from the fuel inlet to the fuel outlet and 2) an open position in which the sealing member surface is spaced apart from the seating surface, thereby allowing fuel flow from the fuel inlet to the fuel outlet. 1. A fuel pressure regulator comprising:a fuel inlet;a fuel outlet;a seating surface; anda valve member assembly comprising a poppet and also comprising a sealing member which is made of an elastomer material and which is annular in shape and including a sealing member surface, said sealing member being supported by said poppet, and said valve member assembly being moveable between 1) a closed position in which said sealing member surface engages said seating surface, thereby preventing fuel flow from said fuel inlet to said fuel outlet and 2) an open position in which said sealing member surface is spaced apart from said seating surface, thereby allowing fuel flow from said fuel inlet to said fuel outlet.2. A fuel pressure regulator as in claim 1 , wherein at least one of said seating surface and said sealing member surface is planar when said valve member assembly is in said open position.3. A fuel pressure regulator as in claim 1 , wherein:one of said seating surface and said sealing member surface is planar when said valve member assembly is in said open position; andthe other of said seating surface and said sealing member surface is convex facing toward said one of said seating surface and said sealing member surface when said valve member assembly is in ...

PRESSURE RELEASE VALVE

A pressure release valve, having three or more cavities is described. The pressure release valve comprises a valve body with at least three valve cavities for fluid. The first valve cavity contains high-pressure fluid and the second cavity contains low-pressure fluid. The first, second, and third cavities are separate and apart from one another. The pressure release valve further includes a movable valve body shaft with a valve hammer and an elastic spring body. The pressure release valve further includes a channel and a valve port, wherein when pressure is applied to the movable valve body shaft, the movable valve body shaft is actuated to press against the valve hammer forcing the valve hammer to move opening the port allowing fluid to flow from the first cavity, to the second cavity and the third cavity. 1. A pressure release valve , comprising: at least three valve cavities for fluid, wherein a first cavity contains high-pressure fluid, a second cavity contains low-pressure fluid, and the first cavity, the second cavity, and a third cavity are separate and apart from one another;', 'a movable valve body shaft;', 'a valve hammer;', 'an elastic spring body;', 'a channel; and', 'a valve port;, 'a valve body includingwherein when pressure is applied to the movable valve body shaft, the movable valve body shaft is actuated to press against the valve hammer forcing the valve hammer to move opening the valve port allowing fluid to flow from the first cavity, to the second cavity and the third cavity.2. The pressure release valve of claim 1 , wherein when the high-pressure fluid flows from the first cavity claim 1 , to the third cavity claim 1 , the high pressure fluid fills the third cavity claim 1 , and pressure from the third cavity and the elastic spring body force the valve hammer rapidly closed sealing the first cavity claim 1 , the second cavity claim 1 , and the third cavity apart from one another.3. The pressure release valve of claim 1 , wherein the high- ...

Fluid Valve Assembly including Fluid Driven Sealing

A fluid valve includes a valve body and a plug. The body includes a chamber and ports that communicate with the chamber. The plug rotates within the chamber, and includes a seal disposed in an annular groove provided on the plug surface. An elastic member is disposed in the groove, and biases the seal against an inner surface of the chamber. When the plug is oriented relative to the body so that the groove is aligned with a port, the seal segregates the chamber into a first chamber that borders an outer surface of the seal and a second chamber that borders an inner surface of the seal, and provides a fluid-tight seal between the first chamber and the second chamber. In addition, the seal inner and outer diameters vary based on a fluid pressure difference across the seal. 1. A fluid valve comprising: a valve plug chamber; and', 'valve ports, each valve port communicating with the valve plug chamber,, 'a valve body including a fluid passageway that, in certain rotational orientations of the valve plug relative to the valve body, provides a fluid path that extends between a first one of the valve ports and a second one of the valve ports;', 'a blind hole provided in a side of the valve plug opposed to the fluid passageway,', 'a groove that surrounds the blind hole, the groove having a groove inner wall that is shared with the blind hole and a groove outer wall that surrounds the groove inner wall and is spaced apart from the groove inner wall;', 'an annular seal that is disposed in the groove, the seal having a seal inner diameter and a seal outer diameter; and', 'an elastic member that is disposed in the groove between a blind end of the groove and the seal, the elastic member providing a force that directs the seal against an inner surface of the valve plug chamber,, 'a valve plug that is disposed in the valve plug chamber and is rotatable relative to the valve body about a rotational axis, the valve plug including the seal segregates the valve plug chamber into a ...

Method for operating a pressure-reducing fuel-injection system and fuel-injection system with servo-valve

Es werden ein Verfahren zum Betreiben eines Kraftstoffeinspritzsystems einer Brennkraftmaschine sowie ein Kraftstoffeinspritzsystem beschrieben. Bei dem Verfahren wird über mindestens ein Einspritzventil des Einspritzsystems ein gewünschter Druckabbau im Druckspeicher durchgeführt. Dies wird durch Öffnen eines Servoventils im Einspritzventil erreicht, das während einer Druckabbauphase nur so weit geöffnet wird, dass das eigentliche Verschlusselement geschlossen bleibt und somit kein Einspritzvorgang stattfindet. A method of operating a fuel injection system of an internal combustion engine and a fuel injection system will be described. In the method, a desired pressure reduction in the pressure accumulator is performed via at least one injection valve of the injection system. This is achieved by opening a servo valve in the injection valve, which is only opened so far during a pressure reduction phase, that the actual closure element remains closed and thus no injection process takes place.

Control device and control method of fuel system

本发明属于燃油系统技术领域，具体涉及一种燃油系统的控制装置及控制方法。本发明的燃油系统的控制装置包括：喷油泵，喷油泵包括柱塞体；低压油路，低压油路与柱塞体的进油口连接；出油计量阀，出油计量阀设置于柱塞体与低压油路之间，控制出油计量阀开启或关闭能够断开或连通低压油路和柱塞体；共轨管，共轨管上分别设置有轨压传感器和压力释放阀，共轨管分别与低压油路和柱塞体连接，共轨管与柱塞体之间设置有出油阀，控制压力释放阀开启或关闭，从而连通或断开共轨管和低压油路；控制器，控制器根据轨压传感器的信号，控制出油计量阀或压力释放阀开启。本发明的燃油系统的控制装置中，能够通过出油计量阀和压力释放阀对供油进行高精度的控制。

Aero-engine high-pressure common-rail fuel system

本发明公开了一种航空发动机用高压共轨燃油系统，包括燃油计量单元、高压油泵、燃油轨和设置于所述燃油轨上且用于控制燃油轨回油量的轨压控制阀。本发明的航空发动机用高压共轨燃油系统，通过设置轨压控制阀，通过控制燃油轨回油量的方式实现对油轨压力的直接控制和调节，提高了燃油系统的可靠性、安全性及可操纵性，并大幅提高了系统响应速度，改善了发动机的性能。

Method and system for dual injection fuel system

本发明涉及用于双喷射燃料系统的方法和系统。提供用于控制燃料系统的燃料喷射器的方法和系统，所述燃料喷射系统被配置为经由进气道燃料喷射和直接燃料喷射中的每个输送燃料到发动机。在一个示例中，方法可包括在发动机绿色起动状况期间，利用进气道喷射器喷射燃料，而不利用直接喷射器喷射燃料，且在绿色起动状况后，以基于发动机工况确定的燃料比率利用进气道喷射器和直接燃料喷射器中的每个喷射。

Common rail

According to the present invention, a common rail can be commonly used according to the specifications of a vehicle, and includes: a first main body having a first flow path formed therein to supply fuel compressed by a high-pressure fuel supply pump to an injector; A second flow path communicating with the first flow path of the first main body portion and configured to supply fuel compressed by the high pressure fuel supply pump to the injector, ; A pressure regulating valve coupled to one end of the second body portion in the direction opposite to a direction in which the first body portion is engaged to regulate a pressure of fuel flowing into the first flow path and the second flow path; And a connecting member having an inner circumferential surface of the first main body coupled to the other unidirectional outer circumferential surface of the second main body portion in a direction in which the first main body portion is disposed and an outer circumferential surface of the second main body portion penetratingly coupled to the inner circumferential surface, The second body part is coupled or separated from the first body part through the connecting member.

Common rail

본 발명은 차량의 사양에 따라 커먼레일을 공용으로 사용할 수 있는 것으로서, 고압연료공급펌프로 압축한 연료를 인젝터에 공급하도록 내부에 제1유로가 형성된 제1본체부; 상기 제1본체부의 상기 제1유로과 서로 연통되고 고압연료공급펌프로 압축한 연료를 인젝터에 공급하도록 내부에 제2유로가 형성되며, 상기 제1본체부의 끝단에 탈부착 가능하게 결합되는 제2본체부; 상기 제2본체부에서 상기 제1본체부가 결합되는 방향의 반대방향인 일단방향 끝단에 결합되어 상기 제1유로와 상기 제2유로에 유동하는 연료의 압력을 조절하는 압력조절밸브; 및 상기 제2본체부에서 상기 제1본체부가 배치된 방향인 타단방향 외주면에 상기 제1본체부의 내주면이 결합되고, 내주면에 상기 제2본체부의 외주면이 관통되어 결합되는 연결부재;를 포함하되, 상기 제2본체부는, 상기 연결부재를 통하여 상기 제1본체부로부터 결합 또는 분리된다.

METHOD AND SYSTEM FOR REGULATING OPERATING PRESSURE IN A BATTERY FUEL SYSTEM OF HIGH PRESSURE, IN PARTICULAR, DIESEL ENGINES

1. Способ регулирования рабочего давления в системе впрыска топлива двигателя внутреннего сгорания, включающий: ! подачу топлива под заданным высоким давлением в накопительную емкость (12), общую для множества электрически управляемых топливных инжекторов (I1-I4), каждый из которых выполнен с возможностью подачи заданного количества топлива под давлением в камеру сгорания соответствующего цилиндра (C1-C4) двигателя; ! измерение давления топлива в накопительной емкости (12); ! регулирование давления топлива в накопительной емкости (12) в зависимости от измеренного давления для поддержания заданного значения давления впрыска в зависимости от рабочего режима двигателя путем возврата избыточного топлива в топливный бак (24), ! отличающийся тем, что он включает регулирование момента впрыска путем осуществления поздних впрысков (INJpost) заданного количества топлива в камеру сгорания цилиндров (C1-C4) двигателя во время соответствующего такта выпуска, когда определено, что давление в накопительной емкости (12) выше заданного порогового значения (THover) для отведения топлива из накопительной емкости (12) без его участия в процессе сгорания, тем самым уменьшая давление в накопительной емкости (12). ! 2. Способ по п.1, в котором заданное пороговое значение представляет собой заданное значение давления (SP), определяемое как функция рабочего режима двигателя. ! 3. Способ по п.1, в котором заданное пороговое значение представляет собой пороговое значение (THover) избыточного давления, приводящего к неисправности и устанавливаемого выше допустимого диапазона заданных значений давления. ! 4. Способ по п.3, включающий осуществление серии последов РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 119 168 (13) A (51) МПК F02B 51/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2009119168/06, 20.05.2009 (71) Заявитель(и): ДЖИ ЭМ ГЛОУБАЛ ТЕКНОЛОДЖИ ОПЕРЕЙШНЗ, ИНК. (US) (30) Конвенционный приоритет: 21.05 ...

On-off valve and high pressure fuel pump for fuel injection system

본 발명은 원추형 측방 표면(58), 및 상기 측방 표면(58)을 넘어 반경방향으로 돌출되고 축방향으로 탄성적인, 반경방향으로 연장되는 스프링 돌출부(62)를 갖는 밸브 몸체(38)를 포함하는 온-오프 밸브(30)에 관한 것이다. 또한 본 발명은 펌프 케이싱(36)의 위치 설정 구멍(32)에 상기 유형의 온-오프 밸브(30)를 갖는 고압 연료 펌프(18)에 관한 것이다.

High-pressure injection device for an internal combustion engine

Die Erfindung betrifft eine Hochdruckeinspritzvorrichtung für einen Verbrennungsmotor, welchem Motorsegmentzeiten zugeordnet sind, mit einer Hochdruckpumpe, einem mit der Hochdruckpumpe über eine Kraftstoffhochdruckleitung verbundenen Rail, mindestens einem Injektor, einem mit dem Rail verbundenen digitalen Druckabbauventil, einer mit dem Druckabbauventil verbundenen Kraftstoffrückführleitung und einem Steuergerät, wobei das Steuergerät dazu ausgebildet ist, das Druckabbauventil nur in vorgegebenen Motorsegmentzeiten in den durchlässigen Zustand zu schalten und diesen durchlässigen Zustand des Druckabbauventils für eine Zeitdauer aufrecht zu erhalten, die größer ist als die Dauer einer Motorsegmentzeit. The invention relates to a high-pressure injection device for an internal combustion engine, which are associated with engine segment times, with a high-pressure pump, a rail connected to the high-pressure pump via a high-pressure fuel line, at least one injector, a digital pressure reduction valve connected to the rail, a fuel return line connected to the pressure reduction valve and a control unit. wherein the controller is configured to switch the pressure reduction valve in the permeable state only at predetermined engine segment times and to maintain this permeable state of the pressure reduction valve for a period of time which is greater than the duration of an engine segment time.

Fuel pump for internal combustion engine

DIGITAL TYPE HIGH PRESSURE PUMP CONTROL PROCESS

La présente invention a pour objet un procédé de commande d'une pompe haute pression (20) de type digitale, le procédé de commande comportant les étapes successives suivantes lorsque le moteur à combustion interne n'arrive pas à démarrer durant la procédure démarrage : • vérification des paramètres externes du moteur à combustion interne ; • mesure d'un paramètre physique au niveau de la sortie haute pression (20_3), • application d'un signal électrique de commande de décollage (SD) en remplacement du signal électrique de commande à la pompe haute pression (20) durant la procédure de démarrage lorsque le paramètre physique mesuré au niveau de la sortie haute pression (20_3) est inférieur ou égal à une valeur de référence, • arrêt de la procédure de démarrage après un temps déterminé lorsque le paramètre physique mesuré au niveau de la sortie haute pression (20_3) est supérieur à la valeur de référence. The subject of the present invention is a method for controlling a high-pressure pump (20) of the digital type, the control method comprising the following successive steps when the internal combustion engine fails to start during the start-up procedure: verification of external parameters of the internal combustion engine; measurement of a physical parameter at the high pressure output (20_3), application of an electrical takeoff control signal (SD) replacing the electrical control signal to the high pressure pump (20) during the procedure start-up when the physical parameter measured at the high pressure outlet (20_3) is less than or equal to a reference value, stopping the start-up procedure after a determined time when the physical parameter measured at the high pressure outlet (20_3) is greater than the reference value.

METHOD FOR CONTROLLING A DIGITAL TYPE HIGH PRESSURE PUMP

La présente invention a pour objet un procédé de commande d'une pompe haute pression (20) de type digitale, le procédé de commande comportant les étapes successives suivantes lorsque le moteur à combustion interne n'arrive pas à démarrer durant la procédure démarrage : • vérification des paramètres externes du moteur à combustion interne ; • mesure d'un paramètre physique au niveau de la sortie haute pression (20_3), • application d'un signal électrique de commande de décollage (SD) en remplacement du signal électrique de commande à la pompe haute pression (20) durant la procédure de démarrage lorsque le paramètre physique mesuré au niveau de la sortie haute pression (20_3) est inférieur ou égal à une valeur de référence, • arrêt de la procédure de démarrage après un temps déterminé lorsque le paramètre physique mesuré au niveau de la sortie haute pression (20_3) est supérieur à la valeur de référence. The subject of the present invention is a method for controlling a high-pressure pump (20) of the digital type, the control method comprising the following successive steps when the internal combustion engine fails to start during the start-up procedure: verification of external parameters of the internal combustion engine; measurement of a physical parameter at the high pressure output (20_3), application of an electrical take-off control signal (SD) replacing the electrical control signal to the high pressure pump (20) during the procedure start-up when the physical parameter measured at the high pressure outlet (20_3) is less than or equal to a reference value, stopping the start-up procedure after a determined time when the physical parameter measured at the high pressure outlet (20_3) is greater than the reference value.

PRESSURE CONTROL VALVE, IN PARTICULAR FOR A HIGH PRESSURE ACCUMULATOR OF A FUEL INJECTION SYSTEM

Soupape de régulation de pression (10) comportant un actionneur électromagnétique (20) logé dans un boîtier (13) et ayant un noyau magnétique (21) avec une surface polaire (26) et un induit magnétique (22) avec une plaque d'induit (27), ayant une surface (29) coopérant avec la surface polaire (26). Une cavité (45) côté branchement comporte un insert (50) ayant une chambre (47) pour recevoir la plaque d'induit (27) et s'appuyant sur le noyau magnétique (21) par un segment de paroi (51) radialement à l'extérieur. L'insert (50) présente un dégagement (52) côté noyau magnétique qui dégage une surface polaire supplémentaire (26') sur la face frontale du noyau magnétique (21) côté induit.

HIGH PRESSURE FUEL PRESSURE CONTROL VALVE OF INTERNAL COMBUSTION ENGINE FUEL

Soupape de régulation de pression pour réguler la pression dans un accumulateur haute pression de carburant d'un moteur à combustion interne comprenant un piston de soupape (5) coulissant axialement dans un alésage (1) du corps de soupape (2) et agissant sur un élément de fermeture de soupape (5) en direction du siège de soupape (4), l'extrémité du piston opposée à celle du siège de soupape (4), étant reliée à un induit (6) d'une unité électromagnétique (7) pour actionner la soupape de régulation de pression, * l'induit (6) étant logé dans une chambre d'induit (8) et l'élément de fermeture de soupape (3) dans une chambre de soupape (9). La chambre de soupape (9) et la chambre d'induit (8) sont reliées hydrauliquement par une rainure (10) et/ou un perçage (11) réalisés dans le boîtier de soupape (2), le piston de soupape (5) et/ou l'induit (6) ainsi que par au moins un organe d'étranglement (12). A pressure regulating valve for regulating the pressure in a high pressure fuel cell of an internal combustion engine comprising a valve piston (5) axially slidable in a bore (1) of the valve body (2) and acting on a valve closing element (5) in the direction of the valve seat (4), the end of the piston opposite that of the valve seat (4) being connected to an armature (6) of an electromagnetic unit (7) for actuating the pressure regulating valve, the armature (6) being housed in an armature chamber (8) and the valve closing element (3) in a valve chamber (9). The valve chamber (9) and the armature chamber (8) are hydraulically connected by a groove (10) and / or a bore (11) made in the valve housing (2), the valve piston (5) and / or the armature (6) as well as by at least one throttling element (12).

High pressure fuel pump control apparatus for an engine

A high pressure fuel pump control apparatus for an engine can suppress or avoid uncontrolled fuel delivery of a flow control valve upon delivery of a maximum amount of fuel, and resultant great deterioration in drivability and exhaust gas. An advance angle setting limiting section limits a closed position of the flow control valve from being set to a location advanced from a predetermined advance angle limiting position. A flow control valve control section decides a target pressure in accordance with an engine operating condition, and sets the closed position such that the fuel pressure coincides with the target pressure. When the closed position is being controlled to be limited to the advance angle limiting position, and when the fuel pressure does not show a tendency to coincide with the target pressure, the advance angle limiting position is changed from the last set value to a value more retarded therefrom.

Method for operating an internal combustion engine, injection system for an internal combustion engine and internal combustion engine

Verfahren zum Betreiben einer Brennkraftmaschine (1) mit einem Einspritzsystem (3) mit einem Hochdruckspeicher (13), wobei ein Hochdruck in dem Hochdruckspeicher (13) über eine niederdruckseitige Saugdrossel (9) als erstem Druckstellglied in einem ersten Hochdruck-Regelkreis (25) geregelt wird, wobei in einem Normalbetrieb eine Hochdruck-Störgröße über ein hochdruckseitiges Druckregelventil (19) als zweitem Druckstellglied erzeugt wird, über welches Kraftstoff aus dem Hochdruckspeicher (13) in ein Kraftstoff-Reservoir (7) abgesteuert wird, dadurch gekennzeichnet, dass der Hochdruck in einem Schutzbetrieb mittels des Druckregelventils (19) über einen zweiten Hochdruck-Regelkreis (39) geregelt wird, oder dass das Druckregelventil (19) in dem Schutzbetrieb dauerhaft geöffnet wird. Method for operating an internal combustion engine (1) with an injection system (3) with a high pressure accumulator (13), wherein a high pressure in the high pressure accumulator (13) via a low pressure side intake throttle (9) as the first pressure actuator in a first high pressure control loop (25) regulated is, in a normal operation, a high-pressure disturbance variable via a high-pressure side pressure control valve (19) is generated as a second pressure actuator, via which fuel from the high-pressure accumulator (13) is diverted into a fuel reservoir (7), characterized in that the high pressure in a protective operation by means of the pressure control valve (19) via a second high pressure control circuit (39) is controlled, or that the pressure control valve (19) is permanently opened in the protective operation.

Pressure regulating device e.g., for injection system fuel of combustion engine, has monitoring device for monitoring pressure in the common rail on the basis of detected values

A pressure regulating device comprises a monitoring device for monitoring the pressure in the pressurized storage chamber (6) on the basis of the detected value, a determination device for a stop of the combustion engine, and a change device for changing a boost for the regulation on the basis of a monitoring result by the monitoring device before the stop of the combination engine, when the determination device determines a stop of the combustion engine. Independent claims are included for the following: (A) A fuel injection regulating system.#(B) A method for regulating a fuel pressure by actuating a fuel pump.

Method for operating a fuel injection system with pressure reduction, and a fuel injection system comprising a fuel injection valve with a servo valve

The invention relates to a method for operating a fuel injection system with pressure reduction, and a fuel injection system that comprises a fuel injection valve with a servo valve. A method for operating a fuel injection system of an internal combustion engine is described as well as a fuel injection system. In said method, a desired reduction in pressure is carried out in the pressure accumulator using at least one fuel injection valve of the fuel injection system. This is achieved by opening a servo valve in the fuel injection valve, which is opened, during a pressure reduction phase, just wide enough that the actual closing element remains closed and as a result no fuel injection process takes place.

Pressure holding valve arrangement for a fuel line

Die vorliegende Erfindung betrifft eine Druckhalteventilanordnung 100 für eine Kraftstoffleitung 101 mit einer Druckleitung 103 mit einem Druckhalteventil 105 zum Aufrechterhalten eines Kraftstoffdruckes in der Kraftstoffleitung 101 und einer Befüllungsleitung 107 zum Befüllen der Kraftstoffleitung 101 mit Kraftstoff, wobei ein Einlass 111 der Druckleitung 103 mit einem Auslass 109 der Befüllungsleitung 107 fluidtechnisch verbunden ist. The present invention relates to a pressure-maintaining valve arrangement 100 for a fuel line 101 having a pressure line 103 with a pressure-maintaining valve 105 for maintaining a fuel pressure in the fuel line 101 and a filling line 107 for filling the fuel line 101 with fuel, wherein an inlet 111 of the pressure line 103 with an outlet 109 the filling line 107 is fluidly connected.

Method for monitoring a pressure sensor in a direct injection system

The invention relates to a method for monitoring a pressure sensor in a direction injection system comprising at least one common rail, a high-pressure fuel pump, a hydraulic circuit connecting the high-pressure pump to the common rail, a passive pressure-limiting valve that is connected to the hydraulic circuit and is configured to open as soon as the pressure in the hydraulic circuit exceeds a threshold pressure such that fuel is discharged, the method involving the steps of detecting an opening action of the pressure-limiting valve, measuring the pressure P MES corresponding to the time the pressure-limiting valve opens, and comparing the measured pressure to the threshold pressure P 1 so as to detect a drift of the pressure sensor.

Common rail system

The invention relates to a common rail system (CRS) for an internal combustion engine of a vehicle, comprising a high-pressure pump (HP) which delivers highly pressurized fuel to a high-pressure accumulator (R), from which the fuel is fed to at least one injection valve (Inj) of the internal combustion engine, a low-pressure pump (NP) for conveying fuel from a fuel container (KB) via a conveying line (L2) to the high-pressure pump (HP), a flow control valve as an electromagnetic switching valve which is arranged in the conveying line (L2) for controlling the fuel quantity which is fed by the high-pressure pump (HP) to the high-pressure accumulator (R); it is provided according to the invention that the flow control valve is configured as a ball seat valve (VNO) with an inlet opening (1d) which is connected to the low-pressure pump (NP) and an outlet opening (1e) which is connected to the high-pressure pump (HP), which ball seat valve (VNO) is open in the de-energized state.

Method and system for controlling a high pressure pump, particularly for a diesel engine fuel injection system

In a fuel injection system of an internal combustion engine, including, but not limited to a high pressure pump adapted to deliver a fuel mass conveyed from a fuel tank to a high pressure region to which a plurality of injectors is connected, including a fuel metering device for adjusting the fuel quantity to be delivered to the high pressure region, a pressure sensor for measuring fuel pressure in the high pressure region; and an electronic control unit arranged for driving the fuel metering device through an energizing signal (Inom; Iact) as a function of the measured fuel pressure and the engine operating mode, where the electronic control unit is arranged for determining the energizing signal (Inom; Iact) for driving the fuel metering device according to a nominal characteristic curve (A) of the high pressure pump representative of a predetermined relationship between the energizing signal and the fuel mass delivered by the pump, the operating pressure is controlled by driving the fuel metering device with an energizing signal determined according to an updated characteristic curve (B) estimated by applying to the nominal characteristic curve (A) an offset between the actual energizing signal value (Iact) related to the controlled fuel mass delivered to the high pressure region in a predetermined engine operating point and a nominal energizing signal (Inom) related to the controlled fuel mass according to the nominal characteristic curve (A).

Pressure regulating valve for regulating pressure in a high-pressure fuel accumulator for an internal combustion engine

本发明涉及一种用于调整内燃机高压燃料贮存器中压力的调压阀，包括阀活塞(5)，所述阀活塞轴向可移动地容纳在壳体(2)的孔(1)中，并朝向阀座(4)作用在阀闭合构件(3)上，所述阀活塞在其背离阀座(4)的端部处连接到磁性组件(7)的衔铁(6)，用于促动所述调压阀，衔铁(6)容纳在衔铁腔室(8)中并且所述阀闭合构件(3)容纳在阀腔室(9)中。根据本发明，所述阀腔室(9)和衔铁腔室(8)经由在阀壳体(2)、阀活塞(5)和/或衔铁(6)中形成的至少一个槽(10)和/或孔(11)、以及至少一个节流阀(12)液压连接。

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.

High-pressure valve

The invention is a high-pressure valve (10) forming part of a common-rail diesel injection circuit (58) of an internal combustion engine. The valve (10) comprises a body (12) to which is fixed an electromagnet (14) the field frame (28) of which has a radial disclike part provided with a central hole joining an interior surface opposite to an exterior surface. The body (12) is provided with a cylindrical exterior surface for centring and with a radial bearing surface. The field frame (28) fits over the body around the centring surface, the exterior disclike surface being in surface contact with the bearing surface of the body. The coil (52) of the electromagnet (14) is fitted into the tubular space between the body (12) and the field frame (28) itself closed by a closure ring (54). Sealing between the body (12) and the field frame (28) is provided by a seal (46) compressed by a packing washer (48) against the centring surface and against the interior disclike surface. The field frame (28) is thus immobilized on the body (12) by said packing washer (48).

For run internal combustion engine method, for internal combustion engine spray into system and internal combustion engine

本发明涉及用于运行内燃机（1）的方法，所述内燃机具有喷入系统（3），所述喷入系统具有高压储存器（13），其中，在所述高压储存器（13）中的高压通过作为第一压力调节环节的低压侧的吸入式节流阀（9）在第一高压调节回路（25）中进行调节，其中，在正常运行中通过作为第二压力调节环节的高压侧的压力调节阀（19）产生高压扰动变量，燃料通过所述高压侧的压力调节阀从所述高压储存器（13）中调控到燃料贮存器（7）中。在此设置，所述高压在保护运行中借助于所述压力调节阀（19）通过第二高压调节回路（39）来调节，或在所述保护运行中最大的燃料体积流持久地通过所述压力调节阀（19）从所述高压储存器（13）中调控到所述燃料贮存器（7）中。

Fuel injection system for an internal combustion engine

본 발명은, 고압 연료 펌프(18)의 압력 챔버(30)를 고압 축압기(24)에 연결하기 위한 밸브 장치(38)를 갖는 연료 분사 시스템(10)으로서, 상기 밸브 장치(38)는 출구 밸브(22) 및 압력 제한 밸브(40)를 갖고, 출구 밸브 안착부(46) 및 압력 제한 밸브 안착부(52)는 일체형으로 형성된 공통 밸브 안착부 부재(54) 상에 형성되고, 서로에 대해 편심으로 배열된, 상기 연료 분사 시스템(10)에 관한 것이다.

High pressure oil limit based on fuel level to protect fuel injectors

处理器(22)可处理第一燃油值(FL_Signal)和第二燃油值(FL_LOW_THLD)，第一燃油值指示燃油箱(34)里的当前燃油量，第二燃油值代表燃油箱里的应当改变最大喷射控制压力(ICP)限制值的燃油量。在处理结果表明第二燃油值小于第一燃油值时，最大的ICP限制值就被从较大值(ICPC_NORMAL_LMX)减小到较小值(ICPC_FL_LMX)。

HYDRAULIC FUEL PUMP FOR INTERNAL COMBUSTION MOTORS.

Una bomba (4) de combustible, de caudal de salida variable, para un motor de combustión interna, incluyendo la bomba (4) de combustible: al menos un cilindro (11); una cámara (22) de volumen variable de la bomba definida en el interior del cilindro (11); un pistón (12) que define el fondo de la cámara (22) de la bomba y es desplazable con respecto al cilindro (11) en una dirección de bombeo (35); al menos una válvula de admisión (26) comunicada con la cámara (22) de la bomba; al menos una válvula de impulsión (27) comunicada con la cámara (22) de la bomba; y un dispositivo de actuación (13) hidráulico/neumático que usa el empuje producido por un fluido de control a presión para desplazar el pistón (12) hacia delante y hacia atrás con respecto al cilindro (11) y en la dirección de bombeo (35) para variar cíclicamente el volumen de la cámara (22) de la bomba; el dispositivo de actuación (13) comprende una primera cámara de actuación (34) situada por debajo de la cámara (22) de la bomba con respecto a la dirección de bombeo (35); un elemento de control (47) para conectar la primera cámara de actuación (34) a un depósito (45) de fluido de control a presión y a un depósito (41) de drenaje de fluido de control; y medios de retorno (37) para ejercer un empuje sobre el pistón (12) en la dirección opuesta a la dirección de bombeo (35) y al empuje ejercido por el fluido de control a presión en la primera cámara de actuación (34); estando caracterizada la bomba (4) de combustible porque los medios de retorno (37) comprenden una segunda cámara de actuación (37) situada por encima de la primera cámara de actuación (34) con respecto a la dirección de bombeo (35), y que recibe fluido de control a presión. A fuel pump (4), with variable output flow, for an internal combustion engine, including the fuel pump (4): at least one cylinder (11); a chamber (22) of variable volume of the pump defined inside the cylinder (11); a piston (12) that defines the bottom of the pump chamber (22) ...

Hydraulic system and fuel injection system for a combustion engine

The hydraulic system (1) has a pump unit (12) that is connected with a high-pressure accumulator (13), where the pump unit conveys pressurizing agent in the high-pressure accumulator under pressure rise. The pressure increasing units (17,18) are coupled with the high-pressure accumulator. Another high-pressure accumulator (22) is coupled with a pressure reducing unit (25). The pressurizing agent is flowed-out from the latter high-pressure accumulator, so that the pressure is reduced in the latter high-pressure accumulator. An independent claim is also included for a fuel injection system with a low pressure area.

Accumulator fuel injection device and internal combustion engine with the accumulator fuel injection device

In one embodiment, the high-pressure pump (8) for providing a pressurized supply of fuel in an engine furnished with a common rail type fuel injection apparatus is provided with two actuators (88, 89). Of these actuators (88, 89), one (88) is stopped and the operation for providing a pressurized supply of fuel is performed from only the other actuator (89), so that the timing at which the load torque that acts on the crankshaft of the engine becomes a local maximum and the timing at which the load torque that acts on the driveshaft of the high-pressure pump (8) becomes a local minimum are made to coincide with one another.

Fuel system with pressure relief valve monitor

Disclosed is a method of controlling the fuel system 10 of an internal combustion engine by determining the opening of a pressure relief valve 18 and initiating a reseat strategy for the valve. The fuel system 10 comprises a source of high pressure fuel 14 and a pressure relief valve 18 having at least one inlet fluidly coupled to the source of high pressure fuel and at least one outlet. The pressure relief valve has a closed position in which fuel is not able to pass from the at least one inlet to the at least one outlet and at least one open position in which fuel is able to pass from the at least one inlet to the at least one outlet. The method comprises the steps of continuously measuring the pressure of the fuel in the fuel source, determining whether the pressure relief valve is in an open position by comparing the measured pressure to at least one preset pressure threshold and generating an open signal if it is determined that the pressure relief valve is in an open position. The fuel system may include a common rail 15 and an electronic control unit (ECU) 17 and the pressure relief valve may be actuated by fuel pressure.

Vented high pressure valve

A valve assembly for a fuel pump is disclosed. In certain aspect, the valve assembly includes a housing defining a valve chamber, a valve inlet in fluid communication with the valve chamber, a valve outlet in fluid communication with the valve chamber, a valve seat; a valve body movably disposed within the valve chamber, a retainer sealingly engaging the housing and defining a cavity between the base portion of the valve body and the retainer, wherein the retainer comprises one or more control orifices formed therein and configured to provide fluid communication to the cavity to regulate a position of the valve body based on at least a pressure difference between the valve chamber and the cavity, and a spring member disposed between the retainer and the valve body, wherein the spring member is configured to bias the valve body.

Pump unit for a high-pressure pump

a method for a reduction of engine noise at engine idle in diesel engine

본 발명은 컴먼레일 시스템을 구비한 디젤 차량에서 엔진 아이들시 인젝터의 파일롯 분사에 필요한 에너자이징 시간(enerziging time)을 기준으로 파일롯 분사시간을 보정하여 기통간의 연소 소음 차이를 줄일 목적으로; The present invention is to reduce the combustion noise difference between the cylinders by correcting the pilot injection time on the basis of the energizing time required for the pilot injection of the injector during engine idle in a diesel vehicle having a common rail system; 엔진이 시동되면, 크랭크 각에 따른 엔진 회전수와 그 평균치를 산출한 후, 상기 엔진 회전수에 해당하는 에너자이징 시간을 산출하고 그 평균치를 산출하는 단계와; 엔진 회전수와 그 평균치를 비교하여 파일롯 분사 보정 여부를 결정하는 단계와; 엔진 회전수에 해당하는 에너자이징 시간과 그 평균치를 비교하여 가보정치를 산출하는 단계와; 상기 단계에서 산출된 가보정치와 차량 실내 및 엔진 소음에 따른 설정 기준값을 비교하여 파일롯 분사 보정 여부를 결정하는 단계와; 상기 단계에서 산출되는 가보정치와 파일롯 분사의 하드웨어적인 한계 특정 값을 비교하여 파일롯 분사 보정 여부를 결정하는 단계로 이루어져 있어서, 엔진 소음의 저감에 따른 상품성을 향상시킬 수 있고, 기통간 편차를 줄이기 위해 추가로 드는 비용들을 저감시킬 수 있는 효과가 있다. Calculating the average engine speed according to the crank angle and its average value, and then calculating an energizing time corresponding to the engine speed and calculating the average value; Determining whether pilot injection is corrected by comparing an engine speed with an average thereof; Calculating a provisional correction value by comparing an energizing time corresponding to the engine speed with an average thereof; Determining whether pilot injection is corrected by comparing the provisional correction value calculated in the step with setting reference values according to vehicle interior and engine noise; Comprising a step of determining the pilot injection correction by comparing the hardware correction value specified in the above step and the hardware limit specific value of the pilot injection, to improve the merchandise according to the reduction of the engine noise, to reduce the deviation between cylinders There is an effect that can reduce additional costs.

Pressure regulating valve

Pressure regulating valve (2), having at least one medium inlet opening (4a), at least one medium outlet opening (4b), a valve element (6), arranged between the medium inlet opening (4a) and the medium outlet opening (4b) and set up to assume an open state and a closed state, wherein, in the open state, a medium connection is produced between the medium inlet opening and the medium outlet opening, and wherein, in the closed state, a medium connection is suppressed between the medium inlet opening and the medium outlet opening, and a drive unit (8), set up to set the valve element (6) in an open state, closed state and/or between said states; characterized by a medium-proof sealing element (12), arranged between the valve element (6) and the drive unit (8), with the result that the pressure regulating valve (2) has a medium-loaded, first region (18a) with medium inlet opening, valve element and medium outlet opening, and a second region (18b) with drive unit, wherein the medium of the first region cannot pass over into the second region.

Hydraulically controlled dosing valve for high pressure fuel pump of internal combustion engine of motor vehicle, has closing element removed from valve seat during decrease in pressure in control space

The valve (1) has a hollow cylinder for receiving a control piston (2) that is movable by pressure obtained in a control space (3) and force of a pressure spring (9). A pressure relief line (4) is guided through the control space that exits through an outlet opening of a hollow cylinder. A retaining throttle (11) is formed by the outlet opening, and a valve seat (10.2) of an exhaust valve (10) is turned towards the piston. A closing element (10.1) is removed from the valve seat during decrease in pressure in the control space.

Control device for internal combustion engine

Steuervorrichtung (90) für eine Maschine mit interner Verbrennung, welche mit einer Hochdruckkraftstoffpumpe (30), die durch eine Antriebswelle (12) der Maschine (10) mit interner Verbrennung angetrieben wird, um einen Kraftstoff abzuführen, der in einer Druckbeaufschlagungskammer (42) beaufschlagt ist, einem Akkumulator (60), der konfiguriert ist, einen Hochdruckkraftstoff anzusammeln, der aus der Hochdruckkraftstoffpumpe abgeführt wurde, und einem Überströmventil (80), welches konfiguriert ist, sich zu öffnen und, wenn ein Kraftstoffdruck in dem Akkumulator höher ist als ein spezifizierter Druck, um den Kraftstoff in dem Akkumulator zu einer spezifizierten Kammer (40) rückzuführen, in welcher ein Kraftstoff einen niedrigeren Druck aufweist als der Druck des Kraftstoffs in der Druckbeaufschlagungskammer, versehen ist, wobei die Steuereinrichtung derart konfiguriert ist, dass eine Leerlauf-Geschwindigkeit der Maschine mit interner Verbrennung auf eine spezifizierte Geschwindigkeit erhöhtwird, wenn der Kraftstoffdruck in dem Akkumulator für eine erste Dauer oder länger höher gewesen ist als ein Anomalitäts-Bestimmungsdruck, welcher niedriger ist als der spezifizierte Druck. A control device (90) for an internal combustion engine having a high-pressure fuel pump (30) driven by a drive shaft (12) of the internal combustion engine (10) to discharge fuel pressurized in a pressurizing chamber (42). an accumulator (60) configured to accumulate high pressure fuel discharged from the high pressure fuel pump, and a spill valve (80) configured to open and when a fuel pressure in the accumulator is higher than a specified one pressure to return the fuel in the accumulator to a specified chamber (40) in which a fuel has a lower pressure than the pressure of the fuel in the pressurizing chamber, wherein the control device is configured such that an idle speed of the Increase internal combustion engine to specified speed ht becomes when the fuel pressure in the accumulator has ...

Device and method for adjusting the return pressure of an injector

本发明涉及用于针对喷射器（12）进行回流压力调整的装置（10），带有：带第一端部（14a）的回流管路（14），在该第一端部上能直接或间接地这样连接着喷射器（12）的回流出口（12a），使得喷射器（12）的回流量（16）从回流管路（14）的第一端部（14a）流到回流管路（14）的第二端部（14b）；和至少一个阀（20），借助该阀能至少在回流管路（14）的第一端部（14a）和回流管路（14）中的阀（20）之间调整回流压力，其中，装置（10）具有能电气调整的节流阀（20）作为阀（20）。本发明同样涉及针对喷射器（12）的回流块、用于针对至少一个喷射器（12）进行喷射量测量和/或回流量测量的测量装置和针对至少一个喷射器（12）的试验台。此外，本发明还涉及用于在至少一个喷射器（12）上进行回流压力调整的方法。

Pressure switching valve for a fuel injection system of an internal combustion engine

在用于内燃机的燃料喷射系统的压力转换阀中，该压力转换阀具有一缸(42)，一用于选择式地关闭一入口（46）的关闭体（44）能够在该缸中运动，所述关闭体（44）设置有第一作用面（48），用于打开所述入口（46）的液压压力作用到该第一作用面上，并且，所述关闭体（44）具有第二作用面（50），所述第二作用面构造得大于所述第一作用面（48）。在图中示出压力调节阀（28），该压力调节阀根据低压输送管道（18,66）中的压力和第一（48）和第二（50）作用面上的液压压力控制通过出口（54）的燃料。

Improved solenoid valve for regulating fuel feed pressure in internal combustion engine

FIELD: internal combustion engines; fuel injection devices. SUBSTANCE: proposed solenoid valve contains fuel feed line, shutter controlled by electromagnet and interacting with seat in line and fuel filtering device placed in line to prevent getting of dirt particles between seat and shutter without considerable reduction of fuel pressure. Seat is made conical, being arranged on one end of line. Shutter is provided with ball engaging with conical seat. Filtering device includes metal plate with great number of holes, being secured on other end of line. Diameter of holes in plate is less than 0.25 mm. EFFECT: provision of simple and reliable solenoid valve preventing reduction of pressure in fuel line. 7 cl, 2 dwg

Fuel system control

Disclosed is a method of controlling the fuel system 10 of an internal combustion engine by determining the opening of a pressure relief valve 18 and initiating a reseat strategy for the valve. The fuel system 10 comprises a source of high pressure fuel 14 and a pressure relief valve 18 having at least one inlet fluidly coupled to the source of high pressure fuel and at least one outlet. The pressure relief valve has a closed position in which fuel is not able to pass from the at least one inlet to the at least one outlet and at least one open position in which fuel is able to pass from the at least one inlet to the at least one outlet. The method comprises the steps of continuously measuring the pressure of the fuel in the fuel source, determining whether the pressure relief valve is in an open position by comparing the measured pressure to at least one preset pressure threshold and generating an open signal if it is determined that the pressure relief valve is in an open position. The fuel system may include a common rail 15 and an electronic control unit (ECU) 17 and the pressure relief valve may be actuated by fuel pressure.

Method for determining over-pressure in fuel storage means of injection system of internal combustion engine

本发明涉及一种用于确定在内燃机的喷射系统的燃料储存器中尤其在共轨系统的共轨中的过压的方法，其中，获取所述燃料储存器中的压力，其中当所获取的压力(210；410)的对时间(t)的导数超过预定的上升阈值(215)并且接下来所获取的压力(210；410)超过预定的压力阈值(220；420)时，确定所述燃料储存器中的过压。