EP1490592B1 - Systeme d'injection de carburant pour moteur a combustion interne - Google Patents

Systeme d'injection de carburant pour moteur a combustion interne Download PDF

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Publication number
EP1490592B1
EP1490592B1 EP02795011A EP02795011A EP1490592B1 EP 1490592 B1 EP1490592 B1 EP 1490592B1 EP 02795011 A EP02795011 A EP 02795011A EP 02795011 A EP02795011 A EP 02795011A EP 1490592 B1 EP1490592 B1 EP 1490592B1
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EP
European Patent Office
Prior art keywords
control
fuel injection
valve
pressure
fuel
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
EP02795011A
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German (de)
English (en)
Other versions
EP1490592A1 (fr
Inventor
Peter Grabandt
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1490592A1 publication Critical patent/EP1490592A1/fr
Application granted granted Critical
Publication of EP1490592B1 publication Critical patent/EP1490592B1/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
    • 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
    • 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
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

Definitions

  • the invention is based on a Fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injection device is characterized by the EP 0 987 431 A2.
  • These Fuel injection device has a High-pressure fuel pump and a connected to this Fuel injector for each cylinder of Internal combustion engine.
  • the high-pressure fuel pump points one by the internal combustion engine in a reciprocating motion powered pump piston having a pump working space limited.
  • the fuel injection valve has one with the Pump work space associated pressure room and one Injection valve member, through which at least one Injection opening is controlled and by the in the Pressure chamber prevailing pressure against a closing force in Opening direction for releasing the at least one Injection opening is movable. It is a first electric actuated control valve provided by the one Connection of pump work space with a discharge chamber is controlled.
  • a second electric actuated control valve provided by the one Connection of a control pressure chamber with a discharge space is controlled.
  • the control pressure chamber is over one Throttle connected to the pump working space.
  • Of the Control pressure chamber is limited by a control piston, which is supported on the injection valve member and by the in the Control pressure chamber prevailing pressure in a closing direction the injection valve member acted upon and.
  • To a Fuel injection becomes the first control valve closed and the second control valve open, so that can build up in the control pressure chamber no high pressure and the Fuel injector can open.
  • the second control valve flows out of the pump working space via the control pressure chamber fuel off, so that the for Injection amount of fuel available through the pump piston funded amount of fuel is reduced and also that for the injection to Available pressure is reduced. It follows that the efficiency of the fuel injector not optimal.
  • the fuel injection device with the Features according to claim 1 has the advantage that at second open to fuel injection Control valve and thus opened fuel injection valve with the bypass connection only a small Flow area from the control pressure chamber to the discharge space is released and thus only a small amount of fuel flows out, making the injection available standing pressure and the efficiency of the Fuel injection device is increased.
  • a fast opening or closing of the Fuel injector achieves what caused by a the main controlled link with large Flow cross-section occurring rapid pressure reduction or Pressure build-up in the control pressure chamber when opening or closing of the second control valve is enabled.
  • FIG. 1 shows a Fuel injection device for an internal combustion engine in a longitudinal section in a simplified representation
  • Figure 2 a designated in Figure 1 with II section in enlarged view with closed Fuel injection valve
  • Figure 3 the cutout II at opened fuel injection valve
  • Figure 4 the Fuel injector in a cross section along Line IV-IV in Figure 2.
  • the internal combustion engine is preferably a self-igniting internal combustion engine.
  • the Fuel injection device is preferably as So-called pump-nozzle unit is designed and has for each cylinder of the internal combustion engine one each High-pressure fuel pump 10 and connected to this Fuel injection valve 12, which has a common Form building unit.
  • the Fuel injection device as a so-called pump-line-nozzle system be trained in which the High-pressure fuel pump and the fuel injection valve each cylinder is arranged separately from each other and over a line are connected together.
  • the High-pressure fuel pump 10 has a pump body 14 with a cylinder bore 16 in which a pump piston 18th is tightly guided, at least indirectly by a Cam 20 of a camshaft of the internal combustion engine opposite the force of a return spring 19 in a lifting movement is driven.
  • the pump piston 18 limited in the Cylinder bore 16 a pump working chamber 22, in the at Delivery stroke of the pump piston 18 Fuel under high pressure is compressed.
  • the pump working chamber 22 becomes fuel from a fuel tank 24 of the motor vehicle fed.
  • the fuel injection valve 12 has one with the Pump body 14 connected valve body 26, the may be formed in several parts, and in the one Injection valve member 28 in a bore 30th is guided longitudinally displaceable.
  • the valve body 26 indicates its the combustion chamber of the cylinder of the internal combustion engine facing end region at least one, preferably a plurality Injection openings 32.
  • the injection valve member 28 has at its the combustion chamber end facing a For example, about conical sealing surface 34, which with one in the valve body 26 in the combustion chamber facing End region formed valve seat 36 cooperates, from or after which the injection openings 32 dissipate.
  • valve body 26 is between the injection valve member 28 and the bore 30 to the valve seat 36 toward an annular space 38th present, in its the valve seat 36 facing away End region by a radial extension of the bore 30 in a pressure chamber 40 surrounding the injection valve member 28 passes.
  • the injection valve member 28 has the height of the Pressure chamber 40 by a cross-sectional reduction a Pressure shoulder 42 on.
  • a biased Closing spring 44 At the end of the combustion chamber facing away from the Injector member 28 engages a biased Closing spring 44, through which the injection valve member 28th is pressed toward the valve seat 36.
  • the closing spring 44 is arranged in a spring chamber 46 of the valve body 26, the adjoins the bore 30.
  • a control piston 50 is tightly guided, with the injection valve member 28 is connected.
  • the control piston 50 is supported over a smaller diameter compared to this Piston rod 51 on the injection valve member 28 from and can with be connected to the injection valve member 28.
  • the control piston 50 may be integral with the injection valve member 28th trained, but is preferably for reasons of assembly as a separate part with the injection valve member 28th connected.
  • Control pressure chamber 52 The connection 64 of Control pressure chamber 52 with the discharge chamber 24 is through controlling a second electrically operated control valve 70, which can be designed as a 2/2-way valve.
  • a throttle point 63 In the Connection 62 of the control pressure chamber 52 with the Pump work chamber 22 is a throttle point 63 is provided.
  • the control valves 68,70 can be an electromagnetic Actuator or a piezoelectric actuator and are by a electronic control device 72 is controlled.
  • a housing part in the form of an intermediate disc 54th arranged on a boundary of the control pressure chamber 52 on its side facing away from the injection valve member 28 side forms.
  • the control pressure chamber 52 limiting surface 53 of Washer 54 is transversely, preferably at least approximately perpendicular to the longitudinal axis 49 of the control piston 50 arranged.
  • the channel 62 is of the Channel 60 formed to the control pressure chamber 52 and the Throttle 63 is shown as a throttle bore in the channel 62 in the intermediate disc 54 is formed.
  • the throttle bore 63 opens as shown in Figure 4 in the direction of the longitudinal axis 49 of the control piston 50 seen in an edge region of the Control pressure chamber 52 offset to the longitudinal axis 49 of Control piston 50.
  • the washer 54 is a bore 55 arranged, the one drain from the control pressure chamber 52nd as part of the connection 64 of the control pressure chamber 52 to Relief space 24 forms.
  • the control piston 50 indicates its the intermediate disc 54 facing end side of a annular sealing surface 57, which has a narrow annular web forms and with respect to the end face of the control piston 50th is formed sublime.
  • the annular sealing surface 57 is arranged on a smaller diameter than that Outer diameter of the control piston 50.
  • the control piston 50 may be formed such that its diameter reduced to the front side with the sealing surface 57 out.
  • Within the sealing surface 57 may in the end face of Control piston 50 may be formed a recess 58, the can be formed by a blind hole.
  • the sealing surface 57 is at least approximately coaxial with the bore 55 in the Washer 54 is arranged and is on a larger Diameter arranged as the diameter of the bore 55th is.
  • the throttle bore 63 opens into the intermediate disk 54 in the control pressure chamber 52 outside the sealing surface 57 of the Control piston 50.
  • the bore 55 in the washer 54th forms one within the sealing surface 57 of the control piston 50 laxative flow from the control pressure chamber 52 to the second Control valve 70 and via this to the relief space 24.
  • Die Bore 55 is at least approximately coaxial with the control piston 50 arranged.
  • connection 62 with the throttle point 63rd approximately diametrically opposite one from the control pressure chamber 52nd laxative bypass connection 80 formed in the Connection 64 opens to the discharge chamber 24.
  • the mouth of the Bypass connection 80 is in the control pressure chamber 52 as in Figure 4 shown in the direction of the longitudinal axis 49 of the Control piston 50 considered outside the sealing surface 57 of the Control piston 50.
  • a Throttle 82 arranged as a throttle bore is trained.
  • the flow area of Bypass connection 80 with the restriction 82 is essential less than the flow area of the bore 55th
  • the main connection 84 from the control room 52 to Bore 55 in the washer 54 as a compound of Control pressure space 52 with the second control valve 70 and the Relief space 24 controlled.
  • This main connection 84 is open with the fuel injection valve 12 and closed closed when the fuel injection valve 12 is open.
  • the cross section of the throttle bore 63 of the connection 62 in the intermediate disc 54 and the throttle bore 82 in the Bypass connection 80 in the washer 54 are for a optimal function of the fuel injection device in suitably matched to each other.
  • the second control valve 70 is closed, so that the control pressure chamber 52 separated from the discharge chamber 24 is.
  • the first control valve 68 remains in its closed position. In the control pressure chamber 52 is building while high pressure as in the pump working chamber 22, so that on the control piston 50, a large pressure force in the closing direction acts and the injection valve member 28 in his Closed position is moved.
  • the second Control valve 70 is opened by the control device 72.
  • the Fuel injection valve 12 then opens as a result of reduced pressure force on the control piston 50 and the Injector member 28 moves above its maximum Opening stroke in its open position.
  • the Opening movement of the injection valve member 28 is initially the large flow area over the main connection 84th released by the control piston 50 until the Injector member 28 with its maximum opening stroke is opened and the control piston 50 with its sealing surface 57 abuts the surface 53 of the washer 54 and the Main connection 84 closes and only the Bypass connection 80 released via the throttle bore 82 is. This will allow a quick opening of the Fuel injection valve 12 allows. If that Fuel injector 12 is fully open, so can over the throttle bore 63 and the throttle bore 82 only a small amount of fuel to the relief space 24th out, so that only a small part of the pump piston 18 pumped fuel not for injection to Available.
  • the second Control valve 70 by the controller 72 in his closed switch position brought so that the Control pressure chamber 52 is separated from the discharge chamber 24 and builds up in this high pressure and on the on the Control piston 50 acting force the fuel injector 12 is closed.
  • the Main connection 84 with a large flow area released, so that the pressure in the control pressure chamber 52 quickly rises and on the control piston 50, a high pressure force acts, so that the Kraftstoffeinspriztventil 12 quickly closes.
  • the second control valve 70 by the controller 72nd opened again so that due to the reduced pressure in Control pressure chamber 52, the fuel injection valve 12 opens.
  • the second Control valve 70 closed and / or the first control valve 68 opened.

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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)

Claims (7)

  1. Installation d'injection de carburant pour moteur à combustion interne comprenant
    pour chaque cylindre du moteur, une pompe de carburant à haute pression (10) et une soupape d'injection de carburant reliée à cette pompe qui présente un piston de pompe (18) entraíné en mouvement alternatif par le moteur à combustion interne, ce piston délimitant une chambre de travail de pompe (22) qui reçoit du carburant d'un réservoir de carburant (24),
    dans l'injecteur de carburant (12), une chambre de pression (40) reliée à la chambre de travail de pompe (22) et un organe d'injecteur (28) qui commande un orifice d'injection (32) et qui présente sur une portée de pression chargée par la pression régnant dans la chambre de pression (40), dans un sens d'ouverture (29), et peut contre une force de fermeture se déplacer dans le sens d'ouverture (29) pour libérer l'ouverture d'injection (32) au nombre d'une au moins,
    une première soupape de commande (28) qui commande une liaison (66) de la chambre de travail de pompe (22) à une chambre de décharge (24), et une seconde soupape de commande (70) qui commande une liaison (64) d'une chambre de pression de commande (52) de l'injecteur vers la chambre de décharge (24), et
    une liaison (62) au moins indirecte de la chambre de pression de commande (52) vers la chambre de travail de pompe (22) et qui comporte un point d'étranglement (63), la chambre de pression de commande (52) étant délimitée par un piston de commande (50) qui agit sur l'organe d'injecteur (28) dans le sens de fermeture,
    caractérisée en ce que
    le piston de commande (50), dans une position de course de l'organe d'injecteur (28) où celui-ci est en position de fermeture, libère dans la liaison (64) entre la chambre de pression de commande (52) et la chambre de décharge (24) une liaison principale (84) présentant une grande section de passage,
    le piston de commande (50), dans une position de course de l'organe d'injecteur (28) où celui-ci est en position d'ouverture avec une course maximale, obture la liaison principale (84) en libérant seulement une liaison de by-pass (80) présentant une faible section de passage, et
    cette liaison de by-pass (80) est réalisée dans une partie de boítier (54) délimitant la chambre de pression de commande (52).
  2. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    la liaison de by-pass (80) est réalisée dans la partie de boítier (54) sous la forme d'un alésage comportant un point d'étranglement (82).
  3. Installation d'injection de carburant selon la revendication 1 ou 2,
    caractérisée en ce que
    le piston de commande (50), sur sa face frontale en regard de la partie de boítier (54), présente une portée d'étanchéité (57) par laquelle il coopère avec un siège de soupape (53) réalisé sur la partie de boítier (54) pour commander la liaison principale (84).
  4. Installation d'injection de carburant selon la revendication 3,
    caractérisée en ce que
    le siège de soupape est constitué par une portée (53) de la partie de boítier (54) disposée transversalement et de préférence au moins à peu près perpendiculairement à l'axe longitudinal (49) du piston de commande (50).
  5. Installation d'injection de carburant selon la revendication 3 ou 4,
    caractérisée en ce que
    la portée d'étanchéité (57) du piston de commande (50) a une forme annulaire et à travers la partie de boítier (54), en tant que partie de la liaison (64) entre la chambre de pression de commande (52) et la chambre de détente (24) une sortie (55) située à l'intérieur de la portée d'étanchéité (57) assure l'évacuation de la chambre de pression de commande (52).
  6. Installation d'injection de carburant selon la revendication 5,
    caractérisé en ce que
    la liaison de by-pass (80) assure, à l'extérieur de la portée d'étanchéité (57), l'évacuation de la chambre de pression de commande, (52) et débouche avantageusement dans la sortie (55) située dans la partie de boítier (54).
  7. Installation d'injection de carburant selon une des revendications précédentes,
    caractérisée en ce que
    la pompe à haute pression (10) et l'injecteur de carburant (12) forment une unité constructive, et la partie de boítier (54) est constituée par un disque intermédiaire monté entre le corps de pompe (14) de la pompe à haute pression (10) et un corps de soupape (26) de l'injecteur de carburant (12).
EP02795011A 2002-03-15 2002-12-17 Systeme d'injection de carburant pour moteur a combustion interne Expired - Lifetime EP1490592B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10211439A DE10211439A1 (de) 2002-03-15 2002-03-15 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10211439 2002-03-15
PCT/DE2002/004606 WO2003078828A1 (fr) 2002-03-15 2002-12-17 Systeme d'injection de carburant pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1490592A1 EP1490592A1 (fr) 2004-12-29
EP1490592B1 true EP1490592B1 (fr) 2005-07-13

Family

ID=27797791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02795011A Expired - Lifetime EP1490592B1 (fr) 2002-03-15 2002-12-17 Systeme d'injection de carburant pour moteur a combustion interne

Country Status (6)

Country Link
US (1) US6892955B2 (fr)
EP (1) EP1490592B1 (fr)
JP (1) JP4173821B2 (fr)
BR (1) BR0209654A (fr)
DE (2) DE10211439A1 (fr)
WO (1) WO2003078828A1 (fr)

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DE102004028195A1 (de) * 2004-06-09 2005-12-29 Volkswagen Mechatronic Gmbh & Co. Kg Einspritzventil mit Schließdruckbeaufschlagung der Ventilnadel
EP1836385B1 (fr) * 2004-12-03 2010-12-29 Ganser-Hydromag AG Soupape d'injection de combustible a multiplication de pression
DE102005014180A1 (de) * 2005-03-29 2006-10-05 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
US7415969B2 (en) * 2006-02-28 2008-08-26 Caterpillar Inc. Fuel injector having recessed check top
DE102006027330A1 (de) * 2006-06-13 2007-12-20 Robert Bosch Gmbh Kraftstoffinjektor
DE102006049830A1 (de) * 2006-10-23 2008-04-24 Robert Bosch Gmbh Kraftstoffeinspritzventileinrichtung
EP2085604A1 (fr) * 2008-02-04 2009-08-05 Robert Bosch GmbH Injecteur de carburant
JP5043761B2 (ja) * 2008-06-18 2012-10-10 本田技研工業株式会社 燃料噴射装置
JP5152220B2 (ja) * 2010-02-18 2013-02-27 株式会社デンソー 燃料噴射装置
JP5327117B2 (ja) * 2010-03-24 2013-10-30 株式会社デンソー 燃料噴射装置
JP5625837B2 (ja) 2010-03-31 2014-11-19 株式会社デンソー 燃料噴射装置
JP5732834B2 (ja) * 2010-03-31 2015-06-10 株式会社デンソー 燃料噴射装置
JP5375762B2 (ja) * 2010-07-14 2013-12-25 株式会社デンソー 燃料噴射装置
JP5304861B2 (ja) * 2010-12-17 2013-10-02 株式会社デンソー 燃料噴射装置
JP5752410B2 (ja) * 2010-12-27 2015-07-22 株式会社 Ａｃｒ ディーゼルエンジン用のユニットインジェクタ
JP5310806B2 (ja) * 2011-01-07 2013-10-09 株式会社デンソー 燃料噴射装置
US10982635B2 (en) * 2012-05-29 2021-04-20 Delphi Technologies Ip Limited Fuel injector and method for controlling the same
GB2567171A (en) * 2017-10-04 2019-04-10 Delphi Tech Ip Ltd Fuel injector

Citations (1)

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WO2003050408A1 (fr) * 2001-12-07 2003-06-19 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur a combustion interne

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ATE199966T1 (de) * 1995-06-02 2001-04-15 Ganser Hydromag Brennstoffeinspritzventil für verbrennungskraftmaschinen
US5860597A (en) * 1997-03-24 1999-01-19 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector
WO1999004160A1 (fr) * 1997-07-16 1999-01-28 Cummins Wartsila S.A. Dispositif d'injection de combustible pour moteurs diesel
DE19826791A1 (de) * 1998-06-16 1999-12-23 Bosch Gmbh Robert Ventilsteuereinheit für ein Kraftstoffeinspritzventil
GB9820237D0 (en) * 1998-09-18 1998-11-11 Lucas Ind Plc Fuel injector
DE19939419A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003050408A1 (fr) * 2001-12-07 2003-06-19 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur a combustion interne

Also Published As

Publication number Publication date
WO2003078828A1 (fr) 2003-09-25
JP2005520968A (ja) 2005-07-14
BR0209654A (pt) 2004-12-07
JP4173821B2 (ja) 2008-10-29
EP1490592A1 (fr) 2004-12-29
US20040144366A1 (en) 2004-07-29
US6892955B2 (en) 2005-05-17
DE10211439A1 (de) 2003-10-02
DE50203649D1 (de) 2005-08-18

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