EP1518050B1 - Injecteur pour un systeme d'injection - Google Patents

Injecteur pour un systeme d'injection Download PDF

Info

Publication number
EP1518050B1
EP1518050B1 EP03737904A EP03737904A EP1518050B1 EP 1518050 B1 EP1518050 B1 EP 1518050B1 EP 03737904 A EP03737904 A EP 03737904A EP 03737904 A EP03737904 A EP 03737904A EP 1518050 B1 EP1518050 B1 EP 1518050B1
Authority
EP
European Patent Office
Prior art keywords
injector
bore
injection
pressure
drilled
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 - Fee Related
Application number
EP03737904A
Other languages
German (de)
English (en)
Other versions
EP1518050A1 (fr
Inventor
Jürgen Dick
Heinz Lixl
Johann Massinger
Martin Simmet
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP1518050A1 publication Critical patent/EP1518050A1/fr
Application granted granted Critical
Publication of EP1518050B1 publication Critical patent/EP1518050B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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 is based on the preamble of the main claim • of an injector for an injection system, which is designed for the injection of fuel into an internal combustion engine.
  • the injector is connected by means of a high-pressure line to a high-pressure accumulator (rail) of the injection system, which provides the fuel required for injection into a cylinder of the internal combustion engine.
  • the fuel is provided by a high pressure pump with a certain operating pressure in the high pressure accumulator.
  • a high-pressure bore is provided, through which the fuel is guided by means of a controllable nozzle needle to injection holes of the injector.
  • the high-pressure bore is in the form of stepped bores, the diameter of the individual stepped bores becoming narrower in the direction of the nozzle tip.
  • a further bore is provided, which is likewise designed as a stepped bore, wherein the diameter of the individual stages of the further bore also decreases in the direction of the nozzle tip.
  • an injection valve is provided with a high-pressure bore for supplying fuel to injection holes of a nozzle needle.
  • the high-pressure bore is formed as a stepped bore, wherein the diameter of the individual holes decrease in the direction of the nozzle tip.
  • a further bore which is also formed as a stepped bore, wherein the diameter of the bore decreases in the direction of the nozzle tip.
  • the invention has for its object to further form an injector for the fuel injection, that in particular the pressure drops, vibrations and their interactions occurring in the multiple injection of fuel can be reduced and a more uniform injection is possible. This object is achieved with the features of claim 1.
  • the high-pressure bore which is mounted within the injector, designed such that it forms the largest possible buffer memory for the fuel.
  • the high pressure bore is located in close proximity to the injection holes of the nozzle unit.
  • the length of the connecting lines between the high-pressure accumulator and the connected injectors can advantageously be regarded as less critical, since the pressure drop occurring during the injection can be compensated in particular by the buffer volume which is made available by the high-pressure bore according to the invention within the injector.
  • the high-pressure bore in the injector is designed as a stepped bore.
  • the stepped bore has two or more drill steps.
  • the high-pressure bore has at least two bore diameters, with subsequent bore diameters being narrower towards the nozzle tip. It is provided a further step-shaped bore which is arranged parallel to the high-pressure bore. The bore diameter of the further bore expand in the direction of the nozzle tip.
  • the adjacent cross-sectional areas of the two holes are formed inversely proportional to each other. This ensures that the intermediate wall between the two holes always maintains the same strength.
  • the injector can be made overall slim, without compromising the necessary strength in the high pressure area.
  • a particularly advantageous solution is also seen, for example, make the individual drilling stages of the high-pressure bore in the flow direction of the fuel, for example, each narrower. Start at the top end of the injector with the widest hole and then drill the next hole with a smaller diameter so that the narrowest hole is formed near the nozzle tip.
  • Such an arrangement of the individual drilling stages is particularly easy to carry out in terms of manufacturing technology.
  • the volume for the fuel to be stored can also be predetermined in a simple manner. It seems advantageous to make the volume smaller for the individual drilling stages in the flow direction of the fuel. In this way, one obtains in the upper part of the injector, a relatively large storage volume for the fuel, since there is usually enough space for the expansion of the high pressure bore available. In the lower drilling stages, however, the volume can be designed so that the damping effect of the pressure waves is particularly pronounced.
  • a further improvement of the damping effect for the pressure waves can also be achieved if the transition between two drilling stages is provided with a bevelled, in particular with a conical annular surface. At the ring surface, the pressure waves are also broken and partially absorbed.
  • transitions In order to avoid that new vibrations can form at the transition between two adjacent drilling stages due to different flow velocities in the individual drilling stages, in an alternative embodiment of the invention it is proposed to design the transitions continuously.
  • Such stepless transitions which are formed, for example, arcuate, can be easily mounted manufacturing technology with a correspondingly shaped profile cutter.
  • the two bores are drilled parallel to the longitudinal axis of the injector and have at the upper end of the injector housing an access opening. These access openings provide good access for the connection of electrical lines for the piezoelectric actuator and an external fuel line.
  • the injector according to the invention is particularly well suited for use in a common rail injection system. Especially When injecting diesel fuel is working with a very high fuel pressure, so here at Injection intensity of pressure waves and vibrations is especially high.
  • FIG. 1 is shown in a schematic representation of an embodiment of an injector 10 according to the invention.
  • an injector housing 1 in which an axially parallel, stepped longitudinal bore is introduced.
  • the longitudinal bore is in the right part of FIG. 1 recognizable and is designed as a high-pressure bore 2. It has at its upper end an access opening 13 to which an external fuel line can be connected, for example with a screw thread.
  • a further stepped bore 10 In the left part of FIG. 1 is introduced a further stepped bore 10. Their drilling stages are preferably designed so that the drill diameters expand from top to bottom towards the nozzle tip.
  • an access opening 13 is likewise provided, on which an electrical connection and control lines for the piezoelectric actuator 9 can be provided.
  • the adjacent two step-shaped holes 2,10 are preferably formed with their drill diameters such that at a Bohrquer bain the two adjacent Cross-sectional areas 14a, 14b behave inversely proportional to each other. In addition to a narrower bore, there is thus a larger bore, so that preferably the sum of the drill cross sections in different stages is preferably constant. This advantageously achieves that the wall thickness between the two holes is always made homogeneous and sufficiently strong to withstand the high fuel pressure.
  • the piezoelectric actuator 9 is fixedly arranged with its upper end on the injector 1. Its lower end is designed to be movable and acts on an axial length change to a nozzle needle 6, which is arranged in a nozzle unit 11.
  • the nozzle needle 6 can open in response to control signals to the actuator with its lower conical portion injection holes 5 of the nozzle unit 11 or close fuel-tight.
  • a high-pressure chamber 7 and an inlet throttle 3 and an outlet throttle 8 are furthermore provided in the nozzle unit 11.
  • the inlet throttle 3 is connected to a feed line 4, which is fed by the high pressure bore 2 and substantially promotes the high pressure fuel to the nozzle needle 6, so that the fuel exits when lifting the nozzle needle 6 via the injection holes 5 and into the combustion chamber of a Internal combustion engine can be injected.
  • the high-pressure bore 2 forms with its entire volume V1, V2, Vn a buffer for the fuel to be injected.
  • a connection for an external connecting line is provided at the access opening 13, which can be firmly connected to the high-pressure bore 2, for example by means of a union nut.
  • the black arrow above the high-pressure bore 2 should indicate the direction of flow of the fuel.
  • the high pressure bore 2 is formed in contrast to a conventional cylindrical bore as a multiple stepped bore.
  • FIG. 1 For example, three drill stages with the drill diameters d1, d2 and dn are shown.
  • the uppermost drill step has the largest diameter d1, while the underlying drill stages are formed with a smaller diameter d2, dn.
  • the number of drill steps is freely selectable and depends on the injector type or intended use. Alternatively, subsequent holes can also be formed further.
  • the length of the bores is preferably to be selected such that the largest possible buffer volume is formed but nevertheless sufficiently large wall thicknesses remain for the high-pressure bore.
  • the uppermost drilling stage has a length L1 and the subsequent drilling stages have the lengths L2 and Ln, respectively.
  • the per se known high pressure accumulator (Rail) of a commercial common rail injection system can be saved.
  • the injection system with the injector according to the invention can be made simpler and cheaper.
  • the necessary installation space in the vehicle is reduced in an advantageous manner, so that the injection system, in particular in internal combustion engines Can be used with many cylinders and in tight spaces in the engine compartment.
  • the individual volumes V1, V2, Vn as a function of operating conditions of the internal combustion engine.
  • the uppermost volume V1 could be slightly smaller, the volume V2 larger, and the volume Vn again smaller or the same size. In this way, requirements of the internal combustion engine, for example, in terms of emissions, engine performance and fuel consumption can be optimized.
  • a significant further advantage of the invention is also seen in the fact that the pressure waves or vibrations occurring during the injection process are damped by the different bore diameters d1, d2, dn. As the pressure waves on the sidewalls of the individual drill stages are irregularly broken, reflected and absorbed, the attenuation results in a more uniform injection course. In particular, in the multiple injection, in which the fuel is injected in several individual injection pulses in the shortest time intervals, the exact control is particularly important.
  • the high pressure bore 2 cache also supports this injection process.
  • FIG. 2 shows an enlarged view of a section of the in FIG. 1 explained high-pressure bore 2 of the injector 11.
  • the transitions 20 are explained, which form between two adjacent drilling stages.
  • the transitions 20 are formed, for example, with a beveled, in particular a conical annular surface.
  • the edges of the annular surface 20, which each arise between a drilling step and the annular surface, were further rounded off with a corresponding tool between the two drilling stages d2 and dn, so that a stepless transition from the drilling step d2 to the drilling step dn arises. This prevents the edges from generating new pressure waves or vibrations that could affect the smooth flow of the injection.
  • FIG. 3 shows a schematic arrangement for a common rail injection system, as used for example in the diesel injection. It shows the previously described and per se known high-pressure accumulator (rail) 31 to which four injectors 11 are hydraulically connected via four connecting lines 32.
  • the size of the high-pressure accumulator 31 and the number of connected injectors 11 depends essentially on the number and the volume of the combustion chambers (cylinder) of the engine type used. In this case, the four injectors 11 are provided for a four-cylinder engine.
  • the fuel is pumped by a high-pressure pump 33, which is connected to the high-pressure accumulator 31, at high pressure in the high pressure accumulator 31 and is then available in the individual buffer storage of the connected injectors 11 for injection.
  • the high-pressure pump 33 is in turn supplied by a fuel pump 35.
  • the fuel pump 35 from a reservoir (in FIG. 3 symbolized by the arrow) the fuel with a lower overpressure via lines 36 and one or more filter units 34 to the high-pressure pump 33.
  • the injection holes 5 (FIG. FIG. 1 ) are opened or closed again and thus the injection process can be controlled.

Abstract

L'invention concerne un injecteur (11) pour un système d'injection, pouvant être utilisé pour l'injection de carburant dans le cylindre d'un moteur à combustion interne. Un tel système d'injection est connu par exemple sous le nom de système d'injection à rampe commune (common rail system). En raison des conduites de raccordement (32) relativement longues situées entre l'accumulateur haute pression (31) et l'injecteur (11), il se produit, lors de l'injection, une chute de pression au niveau des orifices d'injection (5) de l'injecteur (11), ladite chute de pression produisant des ondes de pression indésirables, notamment lors d'une injection multiple. Ce phénomène nuit à l'homogénéité du processus d'injection. L'objectif de l'invention est donc de concevoir l'orifice haute pression (2), ménagé dans le carter d'injecteur, sous la forme d'un accumulateur tampon (Vl,V2,Vn). Cet objectif est atteint par exemple, de manière avantageuse, par le fait que l'orifice haute pression (2) est conçu sous la forme d'un orifice à plusieurs étages.

Claims (9)

  1. Injecteur pour système d'injection, qui est conformé pour injecter du carburant dans un moteur à combustion, dans lequel l'injecteur (11) peut être raccordé par un conduit de carburant (32) sous pression à un réservoir haute pression (31) du système d'injection et à un perçage haute pression (2) à travers lequel le carburant peut être acheminé au moyen d'une aiguille de buse (6) qui peut être commandée jusqu'à des trous d'injection (5) de l'injecteur (11), dans lequel le perçage haute pression (2) de l'injecteur (11) se présente sous la forme d'un réservoir tampon (V1,V2,Vn) pour le carburant sous pression, dans lequel, dans le boîtier d'injecteur (1), au niveau d'au moins un étage du perçage haute pression (2), il est agencé parallèlement un autre perçage étagé (10), le diamètre de l'autre perçage (10) s'évasant de haut en bas, caractérisé en ce que, dans au moins deux perçages successifs du perçage haute pression (2) et du perçage étagé (10), une surface de section transversale (14a) du perçage haute pression (2) est conformée de manière inversement proportionnelle à une surface de section transversale (14b) de l'autre perçage étagé (10).
  2. Injecteur selon la revendication 1, caractérisé en ce que le perçage haute pression (2) se présente sous la forme d'un perçage étagé.
  3. Injecteur selon la revendication 1, caractérisé en ce que le premier diamètre (d1) du perçage haute pression (2) est supérieur au deuxième diamètre de perçage (d2) et celui-ci est supérieur éventuellement à un troisième diamètre de perçage (dn).
  4. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le volume récepteur de carburant (V1,V2,Vn) des étages de perçage individuels est conformé en tenant compte des rapports spatiaux dans l'injecteur (11) et/ou des conditions de fonctionnement d'un moteur.
  5. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que les étages de perçage individuels présentent, à leurs transitions (20), une surface annulaire biseautée, en particulier une surface annulaire de forme conique.
  6. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la transition (20) entre deux étages de perçage adjacents se fait en continu.
  7. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que les étages de perçage individuels présentent des longueurs (L1,L2,Ln) différentes, les longueurs (L1,L2,Ln) diminuant selon un rapport prédéfini jusqu'à la pointe de la buse.
  8. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le perçage haute pression (2) et/ou l'autre perçage (10) est ou sont percés parallèlement à l'axe longitudinal du boîtier d'injecteur (1) et présentent une ouverture d'accès (13) à l'extrémité supérieure du boîtier d'injecteur (1).
  9. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'injecteur (11) peut être utilisé pour un système d'injection de type Common Rail, en particulier pour injecter du carburant diesel.
EP03737904A 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection Expired - Fee Related EP1518050B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10229638 2002-07-02
DE10229638 2002-07-02
PCT/DE2003/001702 WO2004005699A1 (fr) 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection

Publications (2)

Publication Number Publication Date
EP1518050A1 EP1518050A1 (fr) 2005-03-30
EP1518050B1 true EP1518050B1 (fr) 2011-10-05

Family

ID=30009774

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03737904A Expired - Fee Related EP1518050B1 (fr) 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection
EP03762417A Expired - Fee Related EP1530680B1 (fr) 2002-07-02 2003-06-24 Procede de fabrication d'un module dote d'un insert mobile pour une soupape d'injection et soupape d'injection associee

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03762417A Expired - Fee Related EP1530680B1 (fr) 2002-07-02 2003-06-24 Procede de fabrication d'un module dote d'un insert mobile pour une soupape d'injection et soupape d'injection associee

Country Status (2)

Country Link
EP (2) EP1518050B1 (fr)
WO (2) WO2004005699A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026171B4 (de) * 2004-05-28 2010-05-20 Continental Automotive Gmbh Einspritzventil
US7334570B2 (en) 2005-04-01 2008-02-26 Achates Power, Inc. Common rail fuel injection system with accumulator injectors
DE102005055359A1 (de) * 2005-11-21 2007-05-24 Robert Bosch Gmbh Zwischenplatte für einen Kraftstoffinjektor und Kraftstoffinjektor
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil
FI123513B (fi) * 2010-12-02 2013-06-14 Waertsilae Finland Oy Polttoaineen syöttöyksikkö, menetelmä sen käyttämiseksi ja polttomoottori
AT512439B1 (de) * 2012-01-26 2013-12-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2033051A1 (de) * 1970-07-03 1972-01-05 Bosch Gmbh Robert Elektrisch gesteuerte Kraftstoffeinspritzeinrichtung
DE2120030A1 (de) * 1971-04-23 1972-11-02 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzdüse
DE2461309A1 (de) * 1973-12-26 1975-07-10 Isuzu Motors Ltd Brennstoffeinspritzvorrichtung
US4526151A (en) * 1982-03-12 1985-07-02 Mitsubishi Jukogyo Kabushiki Kaisha Fuel injection device
JPH0688557A (ja) * 1992-07-24 1994-03-29 Nippondenso Co Ltd 電磁制御式燃料噴射装置
DE19822503C1 (de) * 1998-05-19 1999-11-25 Siemens Ag Steuerventil für Kraftstoffeinspritzventil
DE19921242C1 (de) * 1999-05-07 2000-10-26 Siemens Ag Verfahren zum Positionieren des Stellantriebs in einem Kraftstoffinjektor und Vorrichtung zur Durchführung des Verfahrens
DE10055644A1 (de) * 2000-11-10 2002-05-23 Siemens Ag Verfahren zum Einstellen eines Leerhubs eines Injektors, wobei der Leerhub durch eine Aktoreinheit mit einem elektrisch ansteuerbaren Aktor und einen vom Aktor betätigten Ventilkolben gebildet wird
JP3928362B2 (ja) * 2001-02-14 2007-06-13 株式会社デンソー 流体移送装置のシール面圧向上構造
US6629650B2 (en) * 2001-07-10 2003-10-07 Delphi Technologies, Inc. Fuel injector with integral damper

Also Published As

Publication number Publication date
EP1530680A1 (fr) 2005-05-18
EP1518050A1 (fr) 2005-03-30
WO2004005699A1 (fr) 2004-01-15
EP1530680B1 (fr) 2011-09-28
WO2004005704A1 (fr) 2004-01-15

Similar Documents

Publication Publication Date Title
EP0277939B1 (fr) Dispositif d'injection de combustible
EP1342005B1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
WO2018184799A1 (fr) Accumulateur à haute pression pour carburant
DE10060812A1 (de) Kraftstoffeinspritzsystem für Brennkraftmaschinen
EP1126160B1 (fr) Injecteur pour injecter du carburant dans un moteur à combustion interne
EP1518050B1 (fr) Injecteur pour un systeme d'injection
DE19843616B4 (de) Kraftstoffeinspritzdüse
EP1574701A1 (fr) Injecteur de common rail
EP1185785B1 (fr) Systeme d'injection
DE10346075B4 (de) Verfahren zur Herstellung eines Kraftstoffeinspritzventils und nach diesem Verfahren hergestelltes Kraftstoffeinspritzventil
DE10238569A1 (de) Injektor für ein Kraftstoff-Einspritzsystem eines Verbrennungsmotors sowie Filtervorrichtung
DE102008041167A1 (de) Kraftstoffinjektor
DE10307873A1 (de) Sackloch- und Sitzloch-Einspritzdüse für eine Brennkraftmaschine mit einem Übergangskegel zwischen Sackloch und Düsennadelsitz
AT512437B1 (de) Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
DE102019209002A1 (de) Komponente, insbesondere Brennstoffleitung oder Brennstoffverteiler, und Brennstoffeinspritzanlage
DE102007016625A1 (de) Ventil und Einspritzanlage für eine Brennkraftmaschine mit Ventil
DE19843912B4 (de) Kraftstoffeinspritzdüse
EP1377745B1 (fr) Procede pour actionner une unite pompe-ajutage et unite pompe-ajutage correspondante
DE102013212142A1 (de) Düsenbaugruppe für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102018001566A1 (de) Dual-Fuel-Kraftstoffinjektor
EP1793119A1 (fr) Système d'injection de carburant pour moteur à combustion interne
EP2271836B1 (fr) Systèmes d'injection de carburant à alimentation en carburant non étranglée vers les injecteurs
DE102006050631A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102012202897A1 (de) Kraftstoffversorgungssystem für eine Brennkraftmaschine
DE102018219947A1 (de) Brennstoffverteiler für Brennkraftmaschinen

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

17P Request for examination filed

Effective date: 20041216

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CONTINENTAL AUTOMOTIVE GMBH

17Q First examination report despatched

Effective date: 20080703

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 FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 50313987

Country of ref document: DE

Effective date: 20111208

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

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 PRESCRIBED TIME-LIMIT

Effective date: 20111005

26N No opposition filed

Effective date: 20120706

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50313987

Country of ref document: DE

Effective date: 20120706

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120526

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

Ref country code: GB

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

Effective date: 20120526

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20180531

Year of fee payment: 16

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

Ref country code: FR

Payment date: 20190522

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50313987

Country of ref document: DE

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: 20191203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50313987

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

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 NON-PAYMENT OF DUE FEES

Effective date: 20200531