WO2003067074A1 - Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur - Google Patents

Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur Download PDF

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Publication number
WO2003067074A1
WO2003067074A1 PCT/DE2003/000298 DE0300298W WO03067074A1 WO 2003067074 A1 WO2003067074 A1 WO 2003067074A1 DE 0300298 W DE0300298 W DE 0300298W WO 03067074 A1 WO03067074 A1 WO 03067074A1
Authority
WO
WIPO (PCT)
Prior art keywords
control valve
pressure
control
actuator
end position
Prior art date
Application number
PCT/DE2003/000298
Other languages
German (de)
English (en)
Inventor
Maximilian Kronberger
Original Assignee
Volkswagen Mechatronic Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen Mechatronic Gmbh & Co. Kg filed Critical Volkswagen Mechatronic Gmbh & Co. Kg
Priority to DE50305256T priority Critical patent/DE50305256D1/de
Priority to EP03708015A priority patent/EP1472455B1/fr
Publication of WO2003067074A1 publication Critical patent/WO2003067074A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure

Definitions

  • the invention relates to a method and a device for controlling a control valve of a pump-nozzle unit, wherein the control valve has at least one movable element which can be moved into a first end position for closing the control valve and into a second end position for fully opening the control valve is.
  • Pump-nozzle units are used to supply fuel into a combustion chamber of an internal combustion engine.
  • This can be, for example, a pump-nozzle unit with a control and / or controllable fuel pump, a fuel injection nozzle which has a nozzle needle which can be moved back and forth between a closed position and an open position, a first pressure chamber which is separated from the fuel pump can be filled with fuel under a first pressure, a second pressure chamber, with fuel under a second pressure exerting a closing force on the nozzle needle in the second pressure chamber, and a third pressure chamber which communicates with the first pressure chamber, in the third Pressure chamber under a third pressure fuel exerts an opening force on the nozzle needle.
  • Pump-nozzle units are used in particular in connection with pressure-controlled injection systems.
  • An essential feature of a pressure-controlled injection system is that the fuel injection nozzle opens as soon as an opening force, which is at least influenced by the currently prevailing pressures, is exerted on the nozzle needle.
  • Such pressure-controlled injection systems are used for fuel metering, fuel conditioning, shaping the injection process and sealing the fuel supply against the combustion chamber of the internal combustion engine.
  • pressure controlled Injection systems can be controlled in an advantageous manner the course of the volume flow over time during the injection. This can have a positive impact on the performance, fuel consumption and pollutant emissions of the engine.
  • the fuel pump and the fuel injection nozzle are generally designed as an integrated component.
  • at least one pump-nozzle unit is provided, which is usually installed in the cylinder head.
  • the fuel pump typically comprises a fuel pump piston that can be moved back and forth in a fuel pump cylinder and is driven either directly by a tappet or indirectly by rocker arm of a camshaft of the internal combustion engine.
  • the section of the fuel pump cylinder which usually forms the first pressure chamber can be connected to a low-pressure fuel region via a control valve, fuel being drawn into the first pressure chamber from the low-pressure fuel region when the control valve is open, and into the fuel chamber from the first pressure chamber when the control valve is still open. Low pressure area is pushed back.
  • Optimal combustion processes for example in the case of direct-injection diesel engines, require this flexible design of the injection process with multiple injection, for example pre-injection, main injection and post-injection.
  • multiple injection for example pre-injection, main injection and post-injection.
  • a very quick closing and opening of the control valve over its entire stroke is necessary for this purpose, with correspondingly high pressure gradients.
  • Such high pressure gradients are often undesirable, especially at low speeds, since they trigger pressure fluctuations.
  • the decay time of these pressure fluctuations influences the maximum number and accuracy of the control processes within a sequence of multiple injections.
  • Fuel supply to pump-nozzle systems favors low fuel consumption, but often increases the tendency to cavitation. Higher pressure gradients increase this tendency, which increases engine noise.
  • Control valves in the form of solenoid valves generally only have stable stroke positions when fully open and when closed. These stable positions are usually determined by mechanical stops. The stroke curve over time depends on the resulting force curve from magnetic, hydraulic and frictional forces.
  • control valves in the form of solenoid valves there are approaches that to reduce through a step-like stroke.
  • stepped stroke profiles show, in principle, strong stochastic and specimen-specific variations in the case of solenoid valves.
  • the respective duration of the partial stroke phases is strictly limited.
  • Control valves in the form of piezo valves enable a relatively stable control of partial strokes, with practically no disturbing time limit.
  • the positioning accuracy that can be achieved is considered critical, since, for example, with a total stroke of 200 ⁇ m, a positional accuracy of the valve part strokes of, for example, +/- 5 ⁇ m is considered necessary to avoid undesirable side effects in the course of the injection.
  • the invention is based on the object of developing the generic methods and devices in such a way that control valve part strokes with improved positional accuracy can be achieved, in particular in order to be able to avoid high pressure gradients at lower engine speeds.
  • the method according to the invention for controlling a control valve of a pump-nozzle unit builds on the generic prior art in that a control, in particular an adaptive control, is used at least temporarily to set at least one intermediate position of the at least one movable element.
  • a control in particular an adaptive control
  • valve partial strokes with a high degree of positional accuracy are achieved, which leads, for example, to an improvement in noise and exhaust gas emissions and in the torque curve of the engine.
  • the method according to the invention provides that at least one intermediate position is set for a predetermined period of time when the at least one movable element for opening the control valve is moved from the second end position into the first end position.
  • control valve is actuated by electrical actuation of an actuator for the at least one movable element.
  • the type of actuator defines the type of control valve, for example solenoid valve or piezo valve.
  • the manipulated variable of the regulation is an electrical quantity with which the actuator is electrically actuated.
  • the electrical variable can be the control voltage of the piezo element, for example.
  • the controlled variable of the control is a resultant force and / or a resultant force curve as a result of a pressure within at least one area of the control valve, in particular a pressure and / or pressure curve within the control valve when it is opened of the at least one area.
  • the at least one area can be, for example, the fuel-filled space in front of the piezo element and / or a control chamber, an increase in pressure occurring there causing an increase in the pressure force on the piezo ceramic, for example via a piston or the like ,
  • the pressure and / or the pressure profile within the at least one area of the control valve is detected via a piezo element.
  • the piezo element is part of the actuator or forms it.
  • the pressure and / or pressure curve detected during a current opening process of the control valve within the at least one area of the control valve for the current opening process and / or for at least one subsequent opening process is included in the control, in particular in the form of offset values of at least one electrical variable with which the actuator is controlled.
  • an increase in the pressure force on a piezoceramic can be evaluated by an electrical variable measured on the piezo element.
  • the desired partial stroke positions can then be achieved by superimposing corresponding offset values on the value of the piezo control variable available at the time of evaluation.
  • the target partial stroke positions can assume different values within a multiple control.
  • the device according to the invention for controlling a control valve of a pump-nozzle unit is based on the generic state of the art in that it carries out a regulation, in particular an adaptive regulation, at least temporarily to set at least one intermediate position of the at least one movable element ,
  • the device sets the at least one intermediate position for a predetermined period of time when the at least one movable element for opening the control valve is moved from the second end position into the first end position.
  • embodiments of the device according to the invention are considered to be advantageous in which it is provided that it controls the control valve by electrically controlling an actuator for the at least one movable element.
  • the device according to the invention uses an electrical variable as the manipulated variable with which it electrically controls the actuator.
  • the device according to the invention uses a resultant force and / or a resultant force curve as a control variable of the regulation as a result of a pressure within at least one area of the control valve, in particular one that occurs when the control valve opens Pressure and / or pressure curve within the at least one area.
  • a resultant force and / or a resultant force curve as a control variable of the regulation as a result of a pressure within at least one area of the control valve, in particular one that occurs when the control valve opens Pressure and / or pressure curve within the at least one area.
  • preferred developments of the device according to the invention provide that the pressure and / or the pressure profile within the at least one area of the control valve is detected via a piezo element.
  • the piezo element is part of the actuator or forms it.
  • the device includes, in particular, the pressure and / or pressure curve detected during a current opening process of the control valve within the at least one area of the control valve for the current opening process and / or for at least one subsequent opening process in the form of offset values of at least one electrical variable with which it controls the actuator.
  • the invention is based on the knowledge that the noise and exhaust emissions and the torque curve of an internal combustion engine can be improved if a control is used to increase the positional accuracy of partial strokes of the control valve of a pump-nozzle unit.
  • FIG. 1 shows a schematic embodiment of a pump-nozzle unit with or with which the method according to the invention or the device according to the invention can be used
  • Figure 2 is a schematic partial sectional view of a control valve which can be used with the pump-nozzle unit of Figure 1;
  • FIG. 3 shows a flow chart which illustrates an embodiment of the method according to the invention.
  • FIG. 1 shows schematically a pump-nozzle unit.
  • the pump-nozzle unit shown for supplying fuel 10 into a combustion chamber 12 of an internal combustion engine has a fuel pump 14-22.
  • a fuel pump piston 14 can be moved back and forth in a fuel pump cylinder 16.
  • the fuel pump piston 14 is driven directly or indirectly via a camshaft, not shown, of the internal combustion engine.
  • the compression space of the fuel pump cylinder 16 forms a first pressure space 28.
  • the first pressure space 28 is connected via a fuel line 20 to the control valve 22 to be controlled according to the invention.
  • the control valve 22 serves to either close the fuel line 20 or to connect it to a low-pressure fuel region 18 from which fuel 10 can be drawn. In the open rest position of the control valve 22, fuel 10 is drawn from the low-pressure fuel region 18 into the first pressure chamber 28 when the fuel pump piston 14 moves upward in relation to FIG. 1.
  • the pump-nozzle unit shown also comprises a total of 24 Fuel injection nozzle which has a nozzle needle 46 which can be moved back and forth between a closed position and an open position. In relation to the illustration in FIG. 1, a pressure pin 26 can in particular exert a downward force on the nozzle needle 46.
  • a shim 40 is provided, which is guided in a second pressure chamber 30, wherein in the second pressure chamber 30 at a second pressure p 3 o standing fuel 10 via the pressure pin 26 has a relative lung to the representation of Figure 1 downward closing force exerts on the end face 45 of the nozzle needle 46.
  • a further closing force is exerted by a first spring 36 on the pressure pin 26 and thus on the nozzle needle 46, the first spring 36 being arranged in the second pressure chamber 30 and having its rear end supported on the adjusting disk 40 ,
  • a section of the nozzle needle 46 having a shoulder 44 is surrounded by a third pressure chamber 32, which communicates with the first pressure chamber 28 via a connecting line 42.
  • a third pressure p 32 is built up in the third pressure chamber 32 as a function of the first pressure p 28 prevailing in the first pressure chamber 28.
  • the nozzle needle 46 assumes its open position as long as a difference between the opening force caused by the third pressure p 32 and the sum of the closing force generated by the second pressure p 30 and the closing force generated by the first spring 36 exceeds a predetermined value.
  • the nozzle opening pressure can thus be influenced via the second pressure p 30 in the second pressure chamber 30.
  • a pressure limiting and maintaining valve 34 can be located between the first pressure chamber 28 and the second pressure chamber 30 may be provided.
  • the control valve 22 is controlled by an embodiment of the device 80 according to the invention for controlling the control valve 22, in particular in such a way that the method according to the invention results.
  • FIG. 2 shows a schematic partial sectional view of a control valve 22 which can be used with the pump-nozzle unit according to FIG. 1.
  • the control valve 22 shown has a movable element 48 in the form of a valve needle, which can be moved into the first end position shown for closing the control valve 22 and into a second end position for fully opening the control valve 22, which is shifted to the right in relation to the illustration ,
  • a valve plate 64 provided on the valve needle 48 interacts with a valve seat 62 on the housing side.
  • the low-pressure fuel region 18 is closed off from a high-pressure chamber 38, which is connected to the fuel line 20 shown in FIG. 1.
  • FIG. 2 is a piezo valve which has a piezo element 76. With suitable activation of the piezo element 76, this exerts a force on a pressure piece 54 via an end face 78. The pressure piece 54 in turn transmits the force generated by the piezo element 76 to a first lever 56 and a second lever 58, the first lever 56 and the second lever 58 being provided to effect a force transmission. The first lever 56 and the second lever 58 rest against a second axial end surface 72 of the valve needle 48 in order to transmit the translated force generated by the piezo element 76 to the valve needle 48.
  • the translated force generated by the suitably controlled piezo element 76, which acts on the valve needle 48, is greater than an opposite force, which is generated by a second spring 66 and is exerted on a first axial end face 70 of the valve needle 48 via a spring pressure piece 68.
  • the fuel Low-pressure area 18 is connected to a control chamber 50, which is also connected via a compensating bore 52 to an actuator chamber 74 located in front of the piezo element. This actuator chamber 74 is connected to a return 60 via which fuel can flow back from the actuator chamber 74.
  • the resultant is evaluated by means of an electrical variable, for example the voltage, measured on the piezo element 76 at this time.
  • an electrical variable for example the voltage
  • This procedure can be used both when the valve needle 48 is moved to its second end position to open the control valve completely (total stroke) and when the valve needle 48 is to assume an intermediate position (partial stroke).
  • valve needle 48 has one or more intermediate positions, the position of which is regulated according to the invention, is moved to the second end position, there is a slower opening of the valve. In this way, undesirable high pressure gradients can be at least reduced, for example, at lower engine speeds.
  • FIG. 3 shows a flow diagram which illustrates an embodiment of the method according to the invention.
  • the embodiment of the method according to the invention shown in FIG. 3, which can be applied to the piezo element 76 of FIG. 2, begins at step SI.
  • step S2 an external voltage is applied to the piezo element 76 in order to close the control valve 22.
  • step S3 the external voltage is removed or reduced from the piezo element 76 in order to open the control valve 22.
  • the resulting force is then detected via an electrical variable on the piezo element 76, for example via the voltage applied to the piezo element 76.
  • the detected force or the detected force is then in step S4
  • step S6 Force curve in the actuator chamber 74 compared with a target force or a target force curve. Furthermore, a new value for the external voltage is determined, for example by suitably setting offset values. If the method according to the invention is not intended to end in step S5, a branch is made back to step S2. Otherwise, the method ends in step S6.
  • the invention can be summarized as follows:
  • the invention relates to a method and a device 80 for controlling the control valve 22 of a pump-nozzle unit.
  • a control in particular an adaptive control.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un procédé et un dispositif (80) pour piloter la soupape de commande (22) d'un ensemble pompe-gicleur. Selon l'invention, en particulier pour éviter, lorsque le moteur est à bas régime, des gradients de pression élevée lors de la fin de refoulement de la soupape, l'exactitude de position de courses partielles de la soupape est augmentée grâce à une régulation, en particulier à une régulation adaptative.
PCT/DE2003/000298 2002-02-07 2003-02-03 Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur WO2003067074A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50305256T DE50305256D1 (de) 2002-02-07 2003-02-03 Verfahren und vorrichtung zur ansteuerung eines steuerventils einer pumpe-düse-einheit
EP03708015A EP1472455B1 (fr) 2002-02-07 2003-02-03 Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205112.7 2002-02-07
DE10205112 2002-02-07

Publications (1)

Publication Number Publication Date
WO2003067074A1 true WO2003067074A1 (fr) 2003-08-14

Family

ID=27674583

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/000298 WO2003067074A1 (fr) 2002-02-07 2003-02-03 Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur

Country Status (3)

Country Link
EP (1) EP1472455B1 (fr)
DE (1) DE50305256D1 (fr)
WO (1) WO2003067074A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598547A2 (fr) 2004-05-19 2005-11-23 Volkswagen Mechatronic GmbH & Co. KG Injecteur-pompe

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150070A (ja) * 1985-12-24 1987-07-04 Nippon Denso Co Ltd 燃料噴射装置
US4782807A (en) * 1986-09-05 1988-11-08 Toyota Jidosha Kabushiki Kaisha Unit injector for an internal combustion engine
US5036821A (en) * 1988-11-07 1991-08-06 Toyota Jidosha Kabushiki Kaisha Fuel injection system for an internal combustion engine
EP0277939B1 (fr) 1987-02-04 1992-11-04 Robert Bosch Ag Dispositif d'injection de combustible
DE19835494A1 (de) 1998-08-06 2000-02-10 Bosch Gmbh Robert Pumpe-Düse-Einheit
DE19939457A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Hydraulische Steuervorrichtung
EP1098087A1 (fr) * 1999-10-09 2001-05-09 Delphi Technologies, Inc. Injecteur de combustible
DE10035814A1 (de) * 2000-07-22 2002-01-31 Bosch Gmbh Robert Verfahren zur Ansteuerung eines Einspritzventils zur Kraftstoffeinspritzung in einen Verbrennungsmotor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024662B4 (de) * 2000-05-18 2005-12-15 Siemens Ag Verfahren zum Betreiben eines Einspritzventils

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150070A (ja) * 1985-12-24 1987-07-04 Nippon Denso Co Ltd 燃料噴射装置
US4782807A (en) * 1986-09-05 1988-11-08 Toyota Jidosha Kabushiki Kaisha Unit injector for an internal combustion engine
EP0277939B1 (fr) 1987-02-04 1992-11-04 Robert Bosch Ag Dispositif d'injection de combustible
US5036821A (en) * 1988-11-07 1991-08-06 Toyota Jidosha Kabushiki Kaisha Fuel injection system for an internal combustion engine
DE19835494A1 (de) 1998-08-06 2000-02-10 Bosch Gmbh Robert Pumpe-Düse-Einheit
DE19939457A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Hydraulische Steuervorrichtung
EP1098087A1 (fr) * 1999-10-09 2001-05-09 Delphi Technologies, Inc. Injecteur de combustible
DE10035814A1 (de) * 2000-07-22 2002-01-31 Bosch Gmbh Robert Verfahren zur Ansteuerung eines Einspritzventils zur Kraftstoffeinspritzung in einen Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 380 (M - 650) 11 December 1987 (1987-12-11) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598547A2 (fr) 2004-05-19 2005-11-23 Volkswagen Mechatronic GmbH & Co. KG Injecteur-pompe
DE102004024926A1 (de) * 2004-05-19 2005-12-15 Volkswagen Mechatronic Gmbh & Co. Kg Pumpe-Düse-Einheit
EP1598547A3 (fr) * 2004-05-19 2006-03-15 Volkswagen Mechatronic GmbH & Co. KG Injecteur-pompe

Also Published As

Publication number Publication date
EP1472455A1 (fr) 2004-11-03
DE50305256D1 (de) 2006-11-16
EP1472455B1 (fr) 2006-10-04

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