EP1192352B1 - Systeme d'injection de carburant pour moteur thermique - Google Patents

Systeme d'injection de carburant pour moteur thermique Download PDF

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Publication number
EP1192352B1
EP1192352B1 EP00953005A EP00953005A EP1192352B1 EP 1192352 B1 EP1192352 B1 EP 1192352B1 EP 00953005 A EP00953005 A EP 00953005A EP 00953005 A EP00953005 A EP 00953005A EP 1192352 B1 EP1192352 B1 EP 1192352B1
Authority
EP
European Patent Office
Prior art keywords
fuel
line
pressure
leakage
duct
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
EP00953005A
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German (de)
English (en)
Other versions
EP1192352A1 (fr
Inventor
Ronald Hegner
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen 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 MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of EP1192352A1 publication Critical patent/EP1192352A1/fr
Application granted granted Critical
Publication of EP1192352B1 publication Critical patent/EP1192352B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • F02M55/002—Arrangement of leakage or drain conduits in or from 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
    • 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
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to a fuel injection system for an internal combustion engine according to the preamble of claim 1.
  • Fuel injection systems for internal combustion engines in particular diesel engines, which have a high-pressure pump for delivering the fuel from a fuel supply, a number of fuel injectors for injecting the fuel into the combustion chamber of the internal combustion engine, and a high-pressure reservoir for connecting the high-pressure pump to the fuel injectors and a high-pressure reservoir for holding the high-pressure pump
  • High-pressure fuel line containing pressure-fed fuel to be injected are becoming increasingly widespread.
  • a major advantage of fuel injection systems of this type is that the injection process can be adapted very precisely to the respective speed and load condition of the internal combustion engine with respect to the start of injection, injection duration and mass flow rate of the injected fuel per unit of time.
  • these fuel injection systems In addition to the high-pressure fuel line that conveys the fuel from the high-pressure pump to the fuel injectors and maintains the fuel under high pressure, these fuel injection systems also provide a fuel return line and a leakage line for returning any leakage quantities that occur at the fuel injectors or due to leaks in the sealing points , Providing these additional fuel lines is in itself associated with a great deal of effort and, in particular in the case of large-volume diesel engines, significant vibration problems arise in relation to the attachment of the lines to the engine.
  • a solution for reducing the effort is known from EP 0 786 593 A1.
  • a leakage line surrounds the high-pressure fuel line.
  • the leakage line is designed as an elastomeric sleeve, which is pulled over the corresponding sealing points during assembly.
  • the object of the present invention is to further simplify the connection of the high-pressure fuel line to the fuel injector in a common rail injection system.
  • connection element is provided according to the invention, which has a screw-on sleeve, an internal connection channel and an external connection channel.
  • a major advantage of the fuel system according to the invention is that the fastening parts, sealing and connecting elements required for separate attachment of the fuel return line and the leakage line are eliminated. On the one hand, this avoids the risk of a functional failure of such elements and, on the other hand, there are no difficulties with regard to vibration problems of such lines.
  • a connection is established from the leakage line to a leakage channel mouth of the fuel injector via the internal connecting channel in the connecting element, or a connection is established from the fuel return line to a return channel mouth of the fuel injector via the outer connecting channel.
  • the fuel injectors of the injection system each have a common high-pressure connection provided with a high-pressure channel opening for connecting the high-pressure fuel line, a leakage channel opening for connecting the leakage line, and a return-channel opening for connecting the fuel return line.
  • the advantage of this is that the high-pressure fuel line, the leakage line and the fuel return line are all connected to a common connection directly on the Fuel injector are connected, so that in the cylinder head of the internal combustion engine no channels for discharging return or leakage quantities from the fuel injector must be provided.
  • a particularly preferred embodiment of the invention provides that the common high-pressure connection has on its front side a centrally arranged high-pressure channel opening for connecting the high-pressure fuel line and on its circumference spaced apart from one another in the axial direction, the leakage channel opening for connecting the leakage line and the return channel opening for connecting the return line the individual mouths are each sealed by sealing elements and separated from the other mouths.
  • the sealing element of the high-pressure channel opening is formed by a conical seal which cooperates with a sealing cone formed at the end of the high-pressure fuel line, and that the sealing elements sealing the leakage channel opening and the return channel opening are formed by O-rings which have the inner peripheral surface a screw-on sleeve associated with the leakage line and the fuel return line and having flow cross sections spaced apart from one another in the axial direction interact.
  • the common fuel line is formed by three coaxially arranged, surrounding line pipes, the inner of which forms the high-pressure fuel line, and the high-pressure fuel line is surrounded by an inner and an outer jacket pipe, each of which enclose a flow cross-section and form the fuel return line and the leakage line.
  • the high-pressure fuel line which is very solid due to the required high-pressure strength, forms a stable support for the surrounding jacket pipes. This alleviates the vibration problems.
  • the jacket pipes surrounding the high-pressure fuel line are co-located on their inner surface Channels extending in the longitudinal direction are provided, which form the flow cross sections of the fuel return line or leakage line.
  • the jacket pipes surrounding the high-pressure fuel line have webs on their inner surface between the channels forming the flow cross sections of the fuel return line or leakage line, which webs rest on the outer circumference of the respective inner line surrounded by the relevant jacket pipe.
  • a fuel injection system for an internal combustion engine with a high-pressure accumulator (common rail system) charged with fuel by a high-pressure pump
  • a fuel injection system contains a high-pressure pump 1, which delivers fuel from a Fuel supply 2 to a high pressure accumulator 3 promotes.
  • the high-pressure accumulator 3 is contained in a high-pressure fuel line 4 connecting the high-pressure pump 1 to fuel injectors 5 and operates in the manner of an oil-elastic one High-pressure accumulator.
  • the fuel injectors 5 are intended to inject fuel into the combustion chamber of the internal combustion engine during an injection process that is precisely defined after the start of injection, the end of injection and the course of the injection, and are controlled by a control unit (not shown in the figure) depending on the operating state of the internal combustion engine, in particular the speed, load, temperature and others Parameters controlled.
  • Each fuel injector 5 contains an injection nozzle 7, which is supplied with the fuel to be injected via a fuel channel 6 provided in the fuel injectors 5.
  • the fuel injector 5 is controlled via a control valve 9, which is designed as a 3/2-way valve known per se in the prior art or as a 2/2-way servo valve.
  • FIG. 1 shows a schematic block diagram of a fuel injection system with a high-pressure pump acted upon by a high-pressure pump (common rail system) according to an embodiment of the present invention.
  • a high-pressure pump 1 is provided, which delivers fuel from a fuel supply 2 to a high-pressure accumulator 3, which works in the manner of an oil-elastic high-pressure accumulator and in a high-pressure pump 1 with fuel injectors 5 for injecting the fuel into the combustion chamber the internal combustion engine provided fuel high pressure line 4 is included.
  • the fuel injectors 5 each contain an injection nozzle 7, which is supplied with the fuel to be injected in the high-pressure accumulator 3 via a fuel channel 6, the control of the injection being controlled by a control valve 9 provided in the fuel injector 5.
  • a fuel return line 11 for returning fuel quantities not injected by the fuel injectors 5 and a leakage line 12 for returning leakage quantities occurring in the fuel injectors 5 are combined in a common fuel line 13 together with the high-pressure fuel line 4 containing the high-pressure accumulator 3, as shown in FIG dashed circumferential lines shown.
  • the high-pressure fuel line 4, the fuel return line 11 and the leakage line 12 are formed by separate flow cross sections provided in the common fuel line 13. The structure of the common fuel line 13 will be described in more detail later.
  • FIG. 2 shows a somewhat schematic longitudinal section through a fuel injector, as used in the described embodiment of the fuel injection system according to the invention.
  • the fuel injector designated as a whole by reference number 5, comprises an injector housing 10, in which a nozzle needle 18 is mounted in a longitudinally displaceable manner in a guide sleeve 25 formed in the injector housing 10.
  • the tip of the nozzle needle 18 interacts with an injection nozzle 7 formed at the lower end of the injector housing 10 in the sense of opening and closing an injection opening cross section.
  • a high-pressure duct 19 is formed in the injector housing 10, which leads from a high-pressure connection 26 arranged on the side of the fuel injector 5 to a nozzle antechamber 22 surrounding the nozzle needle 18.
  • the fuel to be injected is fed from the high-pressure fuel line 4 shown in FIG. 1 to the nozzle chamber 22 under high pressure.
  • the fuel injector 5 is controlled by means of a solenoid 15 arranged at the rear end thereof, which cooperates with a control valve formed by a closing body 16 and a valve body 17.
  • the control valve 16, 17 optionally applies or relieves pressure to fuel supplied under high pressure, which is formed on the back of a needle wedge 23 acting on the nozzle needle 18.
  • a return channel 21 is provided to discharge the control quantities occurring at the control valve 16, 17.
  • a leakage channel 20 serves to discharge any leakage quantities occurring in the fuel injector 5.
  • the structure of the fuel injector 5 shown in FIG. 2 corresponds to a fuel injector as is currently used by the applicant.
  • the high-pressure connection 26, which serves to connect the high-pressure fuel line 4 shown in FIG. 1, is designed as a common connection which, in addition to a high-pressure channel opening 19a for connecting the high-pressure fuel line 4, has a leakage channel opening 20a for connection of the leakage line 12 shown in Figure 1 and a return channel mouth 21a for connecting the fuel return line 11 shown in Figure 1.
  • the high-pressure channel mouth 19a for connecting the high-pressure fuel line 4 is provided centrally arranged on the front side of the common high-pressure connection 26, the leakage channel mouth 20a for connecting the leakage line 12 and the return channel mouth 21a for connecting the return line 11, return connection 27, are spaced apart from one another in the axial direction on the circumference of the common high-pressure connection 26 is provided.
  • the mentioned mouths 19a, 20a, 21a of the high-pressure duct, leakage duct and return duct are each sealed and separated from one another by associated sealing elements.
  • the common fuel line 13 (see FIG. 1) is formed by three coaxially arranged, surrounding line pipes 30, 31, 32.
  • the inner line pipe 30 forms the high-pressure fuel line 4.
  • the inner line pipe 30 is surrounded by an inner and an outer jacket pipe 31, 32, which each include a flow cross section 31a, 32a and form the fuel line 11 and the leakage line 12 (see FIG. 1).
  • the inner jacket pipe 31 surrounding the high-pressure fuel line 30 forms the leakage line 12
  • the outer jacket pipe 32 surrounding the inner jacket pipe 31 forms the fuel return line 11.
  • the jacket pipes 31, 32 are provided on their inner surface with longitudinal channels 31a, 32a, each of which Form flow cross sections for the fuel return line 11 and the leakage line 12. Between these channels 31a, 32a, which form the flow cross sections, webs 31b, 32b are formed which rest on the outer circumference of the inner tube surrounding the respective jacket tube 31, 32, that is to say the webs 31b of the inner tube Jacket tube 31 on the outer circumference of the high-pressure tube 30 and the webs 32b of the outer jacket tube 32 on the outer circumference of the inner jacket tube 31.
  • connection element 28 which connects the flow cross-sections 30a of the high-pressure pipe 30, 31a of the leakage line 12 manufactures the inner casing tube 31 and 32a of the outer casing pipe 32 forming the return line with the associated orifices 19a, 20a and 21a of the high-pressure duct, leakage duct and return duct formed on the common high-pressure connection 26.
  • a sealing cone 37 is formed at the end of the central high-pressure pipe 30, which cooperates with a sealing element in the form of a sealing cone 37 formed on the end face of the common high-pressure connection 26, as is conventional in the field of fuel injectors.
  • the orifices 21a of the return channel 21 and 20a of the leakage channel 20 formed on the circumference of the common high-pressure connection 26 are each sealed by sealing elements 34, 35, 36 in the form of O-rings and separated from one another.
  • a screw-on sleeve 38 which is an essential part of the connection element 28, contains connecting channels 39 and 40, of which an internal connecting channel 39 connects to the flow cross-section 31a of the inner jacket tube 31 and an outer connecting channel 40 connects to the flow cross-section 32a of the produces outer jacket tube 32.
  • the connecting channels 39 and 40 each open in the vicinity of the mouths 20a and 21a of the leakage channel and the return channel, and the sealing elements 33, 34, 35 interact with the inner circumferential surface of the screw-on sleeve 38 such that a flow path from the connecting channel 40 to the return channel mouth 21a and from the connecting channel 39 a flow path to the leakage channel mouth 20a is created.

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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)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un système d'injection de carburant destiné à un moteur thermique, présentant une pompe haute pression (1) servant à l'alimentation en carburant à partir d'un réservoir de carburant (2), une pluralité d'injecteurs de carburant (5) servant à l'injection du carburant dans la chambre de combustion du moteur thermique et une conduite de carburant haute pression (4) faisant la jonction entre la pompe haute pression (1) et les injecteurs de carburant (5) et comprenant un réservoir haute pression (3). Le système comprend également une conduite de retour de carburant (11) servant au retour du carburant qui n'a pas été injecté par les injecteurs de carburant (5), et une conduite de retour de carburant de fuite (12) servant au retour des fuites de carburant se produisant au niveau des injecteurs de carburant (5). Selon l'invention, la conduite de carburant haute pression (4), la conduite de retour de carburant (11) et la conduite de retour de carburant de fuite (12) forment un circuit de carburant (13) unique présentant des sections de flux de carburant séparées les unes des autres par des parois, chaque section correspondant à l'une des conduites (4, 11, 12).

Claims (9)

  1. Système d'injection de carburant pour un moteur à combustion interne, avec une pompe haute pression (1) servant à l'alimentation en carburant à partir d'un réservoir à carburant (2), avec des injecteurs de carburant (5) servant à l'injection du carburant dans la chambre de combustion du moteur à combustion interne, avec une conduite de carburant haute pression (4) qui relie la pompe haute pression (1) aux injecteurs de carburant (5) et qui comprend un accumulateur haute pression (3) servant à accumuler du carburant à injecter, amené sous haute pression par la pompe haute pression (1), avec une conduite de retour du carburant (11) servant au retour du carburant non injecté par les injecteurs de carburant (5) et avec une conduite de fuite (12) servant au retour des éventuels volumes de fuite au niveau des injecteurs de carburant (5), laquelle conduite entoure la conduite de carburant haute pression (4), caractérisé en ce qu'un élément de raccordement (28) est prévu pour la liaison d'une conduite de carburant commune (13) à l'injecteur de carburant (5), la conduite de carburant haute pression (4), la conduite de retour du carburant (11) et la conduite de fuite (12) étant rassemblées dans la conduite de carburant commune (13) avec des sections transversales d'écoulement (30a, 31a, 32a) séparées l'une de l'autre par des parois (30, 31, 32) pour chacune des conduites et l'élément de raccordement (28) présentant un manchon fileté de raccordement (38), un canal de liaison interne (39) et un canal de liaison extérieur (40).
  2. Système d'injection de carburant selon la revendication 1, caractérisé en ce qu'au moyen du canal de liaison interne (39), une liaison est établie entre la conduite de fuite (12) et une embouchure de canal de fuite (20a) de l'injecteur de carburant (5).
  3. Système d'injection de carburant selon la revendication 1, caractérisé en ce qu'au moyen du canal de liaison extérieur (40), une liaison est établie entre la conduite de retour du carburant (11) et une embouchure de canal de retour (21a) de l'injecteur de carburant (5).
  4. Système d'injection de carburant selon les revendications 2 et 3, caractérisé en ce que les injecteurs de carburant (5) du système d'injection présentent chacun un raccord haute pression (26) dans lequel une embouchure de canal haute pression (19a) servant au raccordement de la conduite de carburant haute pression (4), l'embouchure de canal de fuite (20a) et l'embouchure de canal de retour (21a) sont disposées en commun.
  5. Système d'injection de carburant selon la revendication 4, caractérisé en ce que, sur le raccord haute pression (26), l'embouchure de canal haute pression (19a) est disposée centralement sur sa face frontale et en ce que l'embouchure de canal de fuite (20a) et l'embouchure de canal de retour (21a) sont disposées sur sa périphérie, écartées l'une de l'autre dans le sens axial, les différentes embouchures (19a, 20a, 21a) étant chacune rendues étanches par des éléments d'étanchéité (33, 34, 35, 36) et étant séparées des autres embouchures (19a, 20a, 21a).
  6. Système d'injection de carburant selon la revendication 5, caractérisé en ce que l'élément d'étanchéité (33) de l'embouchure de canal haute pression (19a) est formé par un joint conique agissant conjointement avec un cône d'étanchéité (37) réalisé à l'extrémité de la conduite de carburant haute pression (4) et en ce que les éléments d'étanchéité (34, 35, 36) rendant étanches l'embouchure de canal de fuite (20a) et l'embouchure de canal de retour (21a) sont constitués par des joints toriques.
  7. Système d'injection de carburant selon la revendication 1, caractérisé en ce que la conduite de carburant haute pression (4) est entourée, de manière coaxiale, par un tuyau-enveloppe intérieur (31) et un tuyau-enveloppe extérieur (32), lesquels comprennent des sections transversales d'écoulement (31a, 32a) séparées les unes des autres par des parois et forment la conduite de retour du carburant (11) et la conduite de fuite (12).
  8. Système d'injection de carburant selon la revendication 7, caractérisé en ce que les tuyaux-enveloppes (31, 32) sont munis, sur leur surface intérieure, de canaux (32a, 31a) s'étendant dans le sens longitudinal et formant les sections transversales d'écoulement de la conduite de retour du carburant (11) ou selon le cas de la conduite de fuite (12).
  9. Système d'injection de carburant selon la revendication 8, caractérisé en ce que, sur leur surface intérieure, les tuyaux-enveloppes (31, 32) présentent, entre les canaux (31a, 32a) formant les sections transversales d'écoulement de la conduite de retour du carburant (11) ou selon le cas de la conduite de fuite (12), des nervures (31b, 32b) qui sont jointives au périmètre extérieur de la conduite interne respective entourée par le tuyau-enveloppe correspondant (31, 32).
EP00953005A 1999-07-07 2000-07-05 Systeme d'injection de carburant pour moteur thermique Expired - Lifetime EP1192352B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19931282 1999-07-07
DE19931282A DE19931282C1 (de) 1999-07-07 1999-07-07 Kraftstoffeinspritzsystem für eine Brennkraftmaschine
PCT/EP2000/006283 WO2001004488A1 (fr) 1999-07-07 2000-07-05 Systeme d'injection de carburant pour moteur thermique

Publications (2)

Publication Number Publication Date
EP1192352A1 EP1192352A1 (fr) 2002-04-03
EP1192352B1 true EP1192352B1 (fr) 2004-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00953005A Expired - Lifetime EP1192352B1 (fr) 1999-07-07 2000-07-05 Systeme d'injection de carburant pour moteur thermique

Country Status (5)

Country Link
US (1) US6604509B1 (fr)
EP (1) EP1192352B1 (fr)
JP (1) JP2003504552A (fr)
DE (2) DE19931282C1 (fr)
WO (1) WO2001004488A1 (fr)

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EP1192352A1 (fr) 2002-04-03
DE19931282C1 (de) 2001-01-11
US6604509B1 (en) 2003-08-12
WO2001004488A1 (fr) 2001-01-18
JP2003504552A (ja) 2003-02-04
DE50009126D1 (de) 2005-02-03

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