EP1125047B1 - Systeme d'injection de carburant - Google Patents

Systeme d'injection de carburant Download PDF

Info

Publication number
EP1125047B1
EP1125047B1 EP00967523A EP00967523A EP1125047B1 EP 1125047 B1 EP1125047 B1 EP 1125047B1 EP 00967523 A EP00967523 A EP 00967523A EP 00967523 A EP00967523 A EP 00967523A EP 1125047 B1 EP1125047 B1 EP 1125047B1
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
injection
pump
nozzle
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP00967523A
Other languages
German (de)
English (en)
Other versions
EP1125047A1 (fr
Inventor
Bernd Mahr
Martin Kropp
Hans-Christoph Magel
Wolfgang Otterbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1125047A1 publication Critical patent/EP1125047A1/fr
Application granted granted Critical
Publication of EP1125047B1 publication Critical patent/EP1125047B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
    • 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
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator

Definitions

  • the invention relates to a fuel injection device according to the preamble of patent claim 1.
  • the fuel injection device according to the invention may be formed both stroke-controlled and pressure-controlled.
  • a stroke-controlled fuel injection device that the opening and closing of the Einspritzöffriung by means of a sliding valve member due to the hydraulic interaction of the fuel pressures in a nozzle chamber and in a Control room is done.
  • a pressure reduction within the control chamber causes a stroke of the valve member.
  • the deflection of the valve member by an actuator (actuator, actuator) take place.
  • a pressure-controlled fuel injection device In a pressure-controlled fuel injection device according to the invention, the pressure prevailing in the nozzle chamber of an injector fuel pressure, the valve member against the action of a closing force (spring) is moved so that the injection port for injection of the fuel from the nozzle chamber is released into the cylinder.
  • injection pressure The pressure at which fuel exits the die space into a cylinder
  • system pressure is understood to mean the pressure below which fuel is available within the fuel injector.
  • Fuel metering means to supply fuel to the nozzle space by means of a metering valve. In a combined fuel metering, a common valve is used to meter different injection pressures.
  • the injection pump and the injector form one unit.
  • Per cylinder such a unit is installed in the cylinder head and driven either directly via a plunger or indirectly via rocker arm of the engine camshaft.
  • the pump-line-nozzle-system (PLD) works according to the same procedure.
  • a high-pressure line leads here to the nozzle chamber or nozzle holder.
  • a pump-nozzle unit is known for example from DE 195 175 78 A1.
  • the system pressure is generated via a pressurizable piston whose movement is controlled by a cam drive.
  • a variable fuel injection of different amounts for pre-, main- and post-injection is limited feasible by such a fuel injection device.
  • US 5 517 972 A discloses a fuel injector having an injector having a fuel pumping chamber.
  • a rate shaping valve assembly is provided.
  • An electromagnetic limiting valve has the ability to switch between a limited state and a first mass flow area and a second state with a second and much larger Ma senstromungsquerites.
  • a fuel injection device For realizing the fuel injection by means of a pump-nozzle unit or a pump-line-nozzle unit over a wide speed range with great accuracy, a fuel injection device according to claim 1 is proposed according to the invention. Further developments according to the invention are contained in claims 2 to 4. It is possible to reduce the pollutant exchange and a more flexible pre-injection and optionally a post-injection by means of a pump-nozzle unit or a pump-line-nozzle system. When using a valve with a cross-sectional control, for example by a piezoelectric actuator for metering the fuel, an improved metering of the injected fuel quantity can be achieved. It creates a good minimum quantity capability in the pre-injection. On the training of the Injection course in the main injection can be specifically influenced.
  • Each pump-nozzle unit or pump-line-nozzle unit may include a pressure storage space which can be decoupled from the unit and is filled with fuel during the delivery stroke of the pressure device.
  • a control of the injection pressure can be carried out relatively independently of the rotational speed of the engine.
  • the time between the control of the pressure build-up and the injection can be freely selected within wide ranges. The time of the beginning of the pressure build-up determines the pressure level reached.
  • a stroke-controlled fuel injection device 1 promotes a feed pump 2 fuel 3 from a storage tank 4 via a feed line 5 to several, the number of individual cylinders corresponding, projecting into the combustion chamber of the engine to be supplied pump-nozzle units 6 (injector). In the figure, only one of the pump-nozzle units 6 is located.
  • Each pump-nozzle unit 6 is composed of a fuel compression device 7 and means for injection. Per engine cylinder, a pump-nozzle unit 6 is installed in a cylinder head.
  • the printing device 7 is driven either directly via a plunger or indirectly via rocker arm of a motor camshaft. Electronic control devices make it possible to influence the quantity of injected fuel (injection path) in a targeted manner.
  • the fuel compression device 7 can compress fuel in a compression space 8.
  • Check valves 9 and 10 and a 2/2-way valve 11 prevent the return of fuel in the direction of the feed pump 2 in the low pressure region.
  • the fuel compression device 7 may be part of a per se known pump-nozzle unit (PDE) or a pump-line-nozzle unit (PLD).
  • PDE pump-nozzle unit
  • PLD pump-line-nozzle unit
  • the fuel compression device 7 serves to generate an injection pressure. The pressure build-up is realized by means of the 2/2-way valve 11.
  • the pressure storage chamber 12 can be filled with fuel and be decoupled via the check valves 9 and 10 from the area of pressure generation.
  • the injection takes place via a fuel metering with the aid of a piston-shaped valve member 13 axially displaceable in a guide bore with a conical valve sealing surface 14 at one end, with which it interacts with a valve seat surface on the injector housing of the injector unit 6.
  • a nozzle chamber 15 On the valve seat surface of the injector housing injection openings are provided.
  • a pressure opening pointing in the opening direction of the valve member 13 is exposed to the pressure prevailing there, which pressure is supplied to the nozzle chamber 15 via a pressure line 17.
  • Coaxially to a compression spring 18 furthermore engages the valve member 13, a plunger 19, which limits the control chamber 16 with its end face 20 facing away from the valve sealing surface 14.
  • the control chamber 16 has an inlet from the fuel pressure port with a throttle 21 and a drain to a pressure relief line 22 which is controlled by a valve unit 24.
  • the nozzle chamber 15 continues over an annular gap between the valve member 13 and the guide bore up to the valve seat surface of the injector housing.
  • the plunger 19 is pressurized in the closing direction.
  • the valve unit 24 is actuated by an electromagnet or piezoelectric actuator for opening or closing or switching.
  • the actuator is controlled by a control unit that can monitor and process various operating parameters (engine speed,%) Of the internal combustion engine to be supplied.
  • the end of the injection is initiated by re-pressing (closing) the valve unit 24, which decouples the control chamber 16 again a leakage line 25, so that in the control chamber 16 again builds up a pressure which can move the valve member 13 in the closing direction.
  • the pressure drop during the main injection is compensated for by the fact that the fuel compression device 7 continues to fill the pressure storage space 12.
  • the size of the pressure storage chamber 12 is preferably selected so that the pre- and post-injection can be carried out by taking place from the pressure accumulator space 12 .Förd réelle of fuel.
  • the compression space 8 of the fuel compression device 7 can be refilled regardless of the range of fuel injection.
  • the pressure build-up in the area of the fuel metering is determined by actuation of the 2/2-way valve 11.
  • a pressure limiting valve (not shown in the exemplary embodiment) can be used in the region of the pressure storage space.
  • the first embodiment of a fuel injector 1 and the second embodiment of a fuel injector 31 shown in FIG. 2 have in common that an advantageous unit injector unit 6 or 36 is connected to a local pressure accumulator space and a cross-sectional control of the fuel metering valve unit.
  • the local accumulator chamber 12 or 32 is used to store the pressure in order to allow a flexible injection timing for a pre- or post-injection outside the cam lift of the pump-nozzle unit 6 and 36, respectively.
  • the accumulator chamber 12 or 32 allows the control of the injection pressure regardless of the speed of the internal combustion engine. This is done by controlling the time between the control of the pressure build-up and the control of the injection. The time for filling the accumulator chamber 12 or 32 determines the pressure level reached.
  • separate valve units are used to build up the injection pressure and control the injection.
  • the injection is pressure-controlled by means of a valve unit 34.
  • valve cross-section By throttling the valve cross-section within the valve unit 34, a variable injection pressure during injection and thus shaping of the injection profile can be achieved by a cross-sectional control, wherein the pressure in the nozzle chamber 37 is influenced.
  • a cross-sectional control both piezoactuators and fast magnetic actuators are conceivable.
  • multi-stage valves instead of a continuous shaping of the injection pressure, a plurality of different injection pressure levels can be generated during the injection by different throttle positions.

Landscapes

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

Claims (3)

  1. Installation d'injection de carburant (1 ; 31) comprenant une ou plusieurs unités pompe-buse (6 ; 36) ou unités pompe-conduite-buse correspondant au nombre de cylindres d'un moteur à combustion interne pour comprimer le carburant, l'installation d'injection de carburant (1 ; 31) présentant des moyens pour former en continu la pression d'injection ou pour générer plusieurs niveaux de pression d'injection différents au niveau de la surface d'étanchéité de soupape (14) d'un élément de soupape (13) pendant l'injection, et présentant également au moins une soupape de commande (24 ; 34) pour commander l'injection avec une commande de section, la pression régnant dans la chambre de commande (16) ou dans la chambre de buse (37) d'un injecteur étant influencée par la soupape de commande (24 ; 34),
    caractérisée en ce que
    la conduite de pression, qui relie un dispositif de compression du carburant (7) de l'unité pompe-buse (6 ; 36) ou de l'unité pompe-conduite-buse avec la chambre de buse (15 ; 37), contient une chambre d'accumulation de pression (12 ; 32) qui peut être découplée du dispositif de compression du carburant (7) de l'unité pompe-buse (6 ; 36) ou de l'unité pompe-conduite-buse.
  2. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    l'installation (1) comprend des moyens de commande linéaire de l'injection de carburant.
  3. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    l'installation (31) comprend des moyens de commande de pression de l'injection de carburant.
EP00967523A 1999-08-20 2000-08-12 Systeme d'injection de carburant Expired - Lifetime EP1125047B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19939419 1999-08-20
DE19939419A DE19939419A1 (de) 1999-08-20 1999-08-20 Kraftstoffeinspritzeinrichtung
PCT/DE2000/002735 WO2001014712A1 (fr) 1999-08-20 2000-08-12 Systeme d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1125047A1 EP1125047A1 (fr) 2001-08-22
EP1125047B1 true EP1125047B1 (fr) 2006-04-26

Family

ID=7918954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00967523A Expired - Lifetime EP1125047B1 (fr) 1999-08-20 2000-08-12 Systeme d'injection de carburant

Country Status (6)

Country Link
US (1) US6725840B1 (fr)
EP (1) EP1125047B1 (fr)
JP (1) JP4550340B2 (fr)
KR (1) KR100715639B1 (fr)
DE (2) DE19939419A1 (fr)
WO (1) WO2001014712A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10063698A1 (de) * 2000-12-20 2002-07-04 Siemens Ag Hochdruckeinspritzsystem mit Ausführung einer Steuerdrossel als Kaskadendrossel
DE10110602A1 (de) 2001-03-06 2002-09-12 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10132732A1 (de) * 2001-07-05 2003-01-23 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE10146745A1 (de) * 2001-09-22 2003-04-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10146739A1 (de) * 2001-09-22 2003-04-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10149004C1 (de) * 2001-10-04 2003-02-27 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10160263A1 (de) 2001-12-07 2003-06-18 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10211439A1 (de) * 2002-03-15 2003-10-02 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
EP1359316B1 (fr) * 2002-05-03 2007-04-18 Delphi Technologies, Inc. Système d'injection de carburant
DE10238951A1 (de) * 2002-08-24 2004-03-11 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
WO2004072472A1 (fr) * 2003-02-17 2004-08-26 Delphi Technologies, Inc. Systeme de soupape de commande
FR2871197B1 (fr) * 2004-06-04 2006-07-28 Renault V I Sa Injecteur pompe
FI124086B (fi) * 2011-02-09 2014-03-14 Wärtsilä Finland Oy Putkiliitin ja polttoaineen ruiskutusjärjestelmä

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517578A1 (de) * 1994-05-13 1995-11-16 Caterpillar Inc Elektronisch-gesteuertes Strömungsmitteleinspritzsystem mit vor dem Einspritzen unter Druck setzbarer Strömungsmittelspeicherkammer, und direkt-betätigtem Rückschlagelement

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640252A (en) * 1984-01-28 1987-02-03 Mazda Motor Corporation Fuel injection system for diesel engine
ATE98340T1 (de) * 1986-09-25 1993-12-15 Ganser Hydromag Elektronisch gesteuertes einspritzsystem.
DE4118236C2 (de) * 1990-06-06 2000-02-17 Avl Verbrennungskraft Messtech Einspritzsystem für Brennkraftmaschinen
DE4313852B4 (de) * 1993-04-28 2004-11-25 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
US5505384A (en) * 1994-06-28 1996-04-09 Caterpillar Inc. Rate shaping control valve for fuel injection nozzle
JP2885076B2 (ja) * 1994-07-08 1999-04-19 三菱自動車工業株式会社 蓄圧式燃料噴射装置
US5697342A (en) * 1994-07-29 1997-12-16 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US5463996A (en) * 1994-07-29 1995-11-07 Caterpillar Inc. Hydraulically-actuated fluid injector having pre-injection pressurizable fluid storage chamber and direct-operated check
US5517972A (en) 1994-11-23 1996-05-21 Caterpillar Inc. Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector
JP2689226B2 (ja) * 1994-12-02 1997-12-10 株式会社ゼクセル 高圧燃料噴射装置用燃料ポンプ
DE19544241A1 (de) * 1994-12-10 1996-06-13 Volkswagen Ag Einrichtung zur geräuscharmen Hochdruckeinspritzung von Kraftstoff
AT1628U1 (de) * 1995-03-30 1997-08-25 Avl Verbrennungskraft Messtech Einspritzeinrichtung für eine brennkraftmaschine mit direkteinspritzung
IT1281303B1 (it) * 1995-03-28 1998-02-17 Elasis Sistema Ricerca Fiat Dispositivo di regolazione della pressione di alimentazione di un fluido in un accumulatore di fluido in pressione, ad esempio per
US5732679A (en) * 1995-04-27 1998-03-31 Isuzu Motors Limited Accumulator-type fuel injection system
DE19616812B4 (de) * 1995-04-27 2004-09-30 Nippon Soken, Inc., Nishio Kraftstoffeinspritzvorrichtung
JP3939779B2 (ja) * 1995-05-26 2007-07-04 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の燃料供給のための燃料供給装置
EP0789142B1 (fr) * 1995-08-29 2003-02-05 Isuzu Motors Limited Dispositif d'injection de carburant du type a accumulation
JP3653882B2 (ja) * 1996-08-31 2005-06-02 いすゞ自動車株式会社 エンジンの燃料噴射装置
US6189509B1 (en) * 1997-07-16 2001-02-20 Cummins Wartsila S.A. Device for injecting fuel into a diesel engine
JPH1182233A (ja) * 1997-09-09 1999-03-26 Zexel Corp 燃料供給ポンプ
DE19739653A1 (de) * 1997-09-10 1999-03-11 Bosch Gmbh Robert Verfahren zum Erzeugen von unter Hochdruck stehendem Kraftstoff sowie System zur Kraftstoffhochdruckerzeugung
EP0970305B1 (fr) * 1997-12-23 2003-05-21 Siemens Aktiengesellschaft Soupape d'injection a vanne de controle
AT2961U3 (de) * 1998-07-02 1999-11-25 Avl List Gmbh Speichereinspritzeinrichtung
EP1002948B1 (fr) * 1998-11-19 2003-03-05 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Système d'injection de combustible du type à accumulation
US6173699B1 (en) * 1999-02-04 2001-01-16 Caterpillar Inc. Hydraulically-actuated fuel injector with electronically actuated spill valve
US6336444B1 (en) * 1999-05-28 2002-01-08 Mack Trucks, Inc. Diesel engine fuel injection system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517578A1 (de) * 1994-05-13 1995-11-16 Caterpillar Inc Elektronisch-gesteuertes Strömungsmitteleinspritzsystem mit vor dem Einspritzen unter Druck setzbarer Strömungsmittelspeicherkammer, und direkt-betätigtem Rückschlagelement

Also Published As

Publication number Publication date
DE19939419A1 (de) 2001-03-01
KR20010080112A (ko) 2001-08-22
EP1125047A1 (fr) 2001-08-22
JP2003507638A (ja) 2003-02-25
JP4550340B2 (ja) 2010-09-22
DE50012651D1 (de) 2006-06-01
US6725840B1 (en) 2004-04-27
KR100715639B1 (ko) 2007-05-08
WO2001014712A1 (fr) 2001-03-01

Similar Documents

Publication Publication Date Title
EP1123462B1 (fr) Dispositif d'injection de carburant
EP1125046B1 (fr) System d'injection de carburant pour un moteur à combustion interne avec un multiplicateur de pression
DE19832287A1 (de) Nadelgesteuerte Kraftstoffinjektoreinheit
EP1078160A1 (fr) Systeme d'injection de carburant
DE3148671C2 (fr)
DE4445586A1 (de) Verfahren zur Reduzierung des Kraftstoffdruckes in einer Kraftstoffeinspritzeinrichtung
EP1520096A1 (fr) Systeme a rampe commune comprenant une buse variable et un systeme multiplicateur de pression
EP1125047B1 (fr) Systeme d'injection de carburant
EP1125054B1 (fr) Procede et dispositif pour la realisation d'une injection de carburant
EP1273797B1 (fr) Dispositif d'injection de combustible
EP1125045B1 (fr) Systeme d'injection de carburant pour un moteur a combustion interne
DE19939425A1 (de) Kraftstoffeinspritzverfahren und -systeme für eine Brennkraftmaschine
EP1595074A1 (fr) Systeme d'injection de carburant pour moteur a combustion interne
EP1534950A1 (fr) Dispositif d'injection de carburant
EP1334271B1 (fr) Injecteur commande par course/et pression et pourvu d'un double piston
WO2005124145A1 (fr) Dispositif d'injection de carburant
DE19942846C1 (de) Vorrichtung und Verfahren zur druckgesteuerten Einspritzung eines Fluids
DE10051343B4 (de) Verfahren zum Einspritzen von Kraftstoff mit Mehrfachansteuerung eines Steuerventiles
EP1125044B1 (fr) Systeme d'injection de carburant pour moteur a combustion interne
EP1472455B1 (fr) Procede et dispositif pour piloter une soupape de commande d'un ensemble pompe-gicleur
WO2001034965A1 (fr) Systeme d'injection de carburant
WO2002079638A1 (fr) Dispositif d'injection de carburant pour moteurs a combustion interne
DE10128283A1 (de) Kraftstoffeinspritzeinrichtung
DE102004046898A1 (de) Kraftstoffeinspritzeinrichtung
WO2005045227A1 (fr) Systeme d'injection de carburant pour un moteur a combustion interne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20010903

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 20040406

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20060426

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060426

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50012651

Country of ref document: DE

Date of ref document: 20060601

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060806

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20060426

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070129

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060426

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20101025

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50012651

Country of ref document: DE

Effective date: 20120301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120301