EP1593837B1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP1593837B1
EP1593837B1 EP05101635A EP05101635A EP1593837B1 EP 1593837 B1 EP1593837 B1 EP 1593837B1 EP 05101635 A EP05101635 A EP 05101635A EP 05101635 A EP05101635 A EP 05101635A EP 1593837 B1 EP1593837 B1 EP 1593837B1
Authority
EP
European Patent Office
Prior art keywords
actuator
fuel injection
hydraulic coupler
valve
housing
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.)
Not-in-force
Application number
EP05101635A
Other languages
German (de)
English (en)
Other versions
EP1593837A1 (fr
Inventor
Uwe Liskow
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 EP1593837A1 publication Critical patent/EP1593837A1/fr
Application granted granted Critical
Publication of EP1593837B1 publication Critical patent/EP1593837B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/167—Means for compensating clearance or thermal expansion

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • a fuel injector in the German patent application 103 60 449 has been proposed with a valve housing in which a piezoelectric actuator and a hydraulic coupler are arranged, wherein the piezoelectric actuator having a positive pole and a ground terminal and wherein the valve housing, an electrical connector is provided with a positive terminal and a ground terminal for contacting with a voltage source.
  • the positive terminal of the piezoelectric actuator is connected to the positive terminal of the plug and the Massepol of the piezoelectric actuator to the ground terminal of the plug via a respective cable.
  • the cables Since the hydraulic coupler is disposed between the valve housing and the actuator in a portion of the fuel injector facing the plug, the cables must be routed from the plug around the coupler to the actuator. Since the hydraulic coupler performs thermally induced compensatory movements, the cables can not be tight, but must be relieved of strain by providing an additional length. The cables must not touch any neighboring parts as otherwise they could be worn through the many compensating movements over time. The disadvantage is that the cables are mechanically heavily loaded by the compensatory movements, so that after a predetermined life of the fuel injection valve cable break occurs due to fatigue or tear the soldering or welding of the cable. This leads to failure of the fuel injection valve
  • the DE 195 19 191 A1 discloses an injection valve with a valve housing in which an actuator and a hydraulic coupler are provided, wherein the electrical connections of the actuator protrude from the valve housing and thus are wirelessly contacted.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that in a simple manner an improvement is achieved in that the service life of the fuel injector is increased by the Massepol the actuator with the ground terminal of the plug and the positive pole of the actuator the positive terminal are electrically connected wirelessly. In this way, the cable rupture failure of the fuel injection valve is prevented. By eliminating the two cables space is saved, so that the fuel injection valve can be made smaller.
  • the ground terminal of the actuator is electrically connected to the ground terminal of the plug via the valve housing and / or an actuator housing, since in this way an electrically conductive connection already existing in the fuel injection valve is used.
  • the electromagnetic interference emission of the actuator is reduced by the ground contact of the actuator.
  • the positive pole of the actuator is electrically connected to the positive terminal via the hydraulic coupler, since in this way the power supply to the actuator takes place via an existing electrically conductive connection.
  • the actuator is biased in an actuator sleeve between an actuator head and an actuator base to pressure and the ground of the actuator is electrically contacted with the actuator head, wherein the actuator head is electrically connected via the actuator sleeve with the actuator base.
  • the actuator base is electrically connected via a valve needle, a shoulder of the valve needle and a return spring cooperating with the valve needle with the valve housing and / or the actuator housing.
  • the positive terminal of the plug is electrically connected to a head part of the hydraulic coupler and the positive pole of the actuator to a foot part of the hydraulic coupler, wherein the head part and the foot part of the hydraulic coupler are in turn electrically conductively connected to each other via an elastic sealing element , In this way, the power supply via the hydraulic coupler is made possible.
  • the drawing shows schematically a fuel injection valve according to the invention.
  • the fuel injection valve is used for example in the so-called direct injection and serves to inject fuel, such as gasoline or diesel, in a combustion chamber of an internal combustion engine.
  • the fuel injection valve has a valve housing 1 with an input channel 2 for the fuel.
  • the valve housing has, for example, a cup-shaped housing part 1.1 and a cup-shaped housing part 1.1 closing housing cover 1.2.
  • the input channel 2 is provided for example in the housing cover 1.2.
  • valve housing 1 In the valve housing 1 is a schematically illustrated actuator 3, for example, a piezoelectric or magnetostrictive actuator, arranged for the axial adjustment of a valve needle 4.
  • actuator 3 for example, a piezoelectric or magnetostrictive actuator, arranged for the axial adjustment of a valve needle 4.
  • the valve needle 4 is provided axially movable in the valve housing 1 and has, for example, a needle shaft 7 facing the actuator 3 and a valve closing body 8 facing away from the actuator 3.
  • the actuator 3 transmits its movement to the needle shaft 7 of the valve needle 4, whereby the valve closing body 8 cooperating with a valve seat 9 opens or closes the fuel injection valve.
  • the fuel injection valve is for example a so-called outward-opening valve, the valve needle 4 executing a stroke in the direction of a combustion chamber 10.
  • the valve closing body 8 lies tight against the valve seat 9 with line or surface contact over its entire circumference and forms a sealing seat 11.
  • the piezoelectric actuator 3 consists of a plurality of piezoceramic layers, which perform an expansion in the axial direction by applying an electrical voltage. In this case, the so-called inverse piezoelectric effect is utilized in which electrical energy is converted into mechanical energy.
  • the elongation of the piezoceramic layers generated by the application of the electrical voltage is transmitted to the valve needle 4, wherein the valve needle 4, for example, executes a stroke of 40 to 50 microns.
  • the actuator 3 is shortened by switching off the electrical voltage and the valve needle 4 is moved back by means of a return spring 14 in the direction of the valve seat 9 and closes the fuel injection valve.
  • the piezoelectric actuator 3 is arranged to protect against tensile and bending stresses, for example in an actuator sleeve 12 between an actuator head 16 and an actuator base 17, wherein the actuator sleeve 12, for example, designed as a so-called Bourdon tube and made of a metal, such as steel.
  • the actuator head 16 is arranged on an end face, the valve needle 4 remote from the end of the actuator sleeve 12 and connected to the actuator sleeve 12 cohesively and / or non-positively, for example by welding.
  • the actuator foot 17 is arranged on an end-side, the valve needle 4 facing the end of the actuator sleeve 12 and also cohesively and / or non-positively connected to the actuator sleeve 12, for example by welding.
  • the actuator 3 is biased between the actuator head 16 and the actuator base 17 by means of the actuator sleeve 12 to pressure.
  • the needle shaft 7 of the valve needle 4 has a shoulder 18 against which the return spring 14 abuts with one end in order to press the needle shaft 7 of the valve needle 4 to the actuator base 17 of the actuator sleeve 12 and the valve closing body 8 in the direction of the valve seat 9.
  • a hydraulic coupler 15 is provided which compensates for the differences in the different linear expansion, to ensure that the fuel injection valve performs the same stroke with the valve needle 4, regardless of the respective temperature of the fuel injection valve. There must be no lifting losses, in which the stroke of the actuator 3 is not completely transmitted to the valve needle 4, so that the stroke of the valve needle 4 is smaller than the stroke of the actuator.
  • the hydraulic coupler 15 is arranged, for example, between the housing cover 1.2 and the actuator head 16 of the actuator sleeve 12.
  • the hydraulic coupler 15 has, for example, a pot-shaped cylinder 21 and an axially movable in the pot-shaped cylinder 21 piston 22. Between the pot-shaped cylinder 21 and the piston 22, a so-called coupler gap 23 is provided.
  • an elastic sealing element 24 which is formed for example as a corrugated bellows and is made of metal, extends as far as the piston 22.
  • the elastic sealing element 24 includes a coupler volume 25 which is flow-connected via a throttle element 28 to the coupler gap 23 is.
  • the coupler volume 25 and the coupler gap 23 are filled with a liquid, for example fuel or a second medium, such as silicone oil.
  • the pressure in the liquid of the coupler volume 25 is increased, for example by means of a spring element 26 by the spring element 26 exerts a compressive force from the outside on the elastic sealing element 24 or is provided within the elastic sealing element 24, for example in the piston 22, and a pressure force on the liquid of the coupler volume 25.
  • the piston 22 has a cavity, which via the throttle element 28 is connected to the coupler gap 23 and via a flow opening with the circumference of the piston 22.
  • the coupler gap 23 decreases or increases because the liquid has enough time to flow out of the coupler gap 23 via the restrictor 28 or into the coupler gap 23 ,
  • the cylinder 21 of the hydraulic coupler 15 is, for example, the actuator 3 and the piston 22 of the hydraulic coupler 15 facing the housing cover 1.1 or vice versa.
  • the housing lid 1.1 facing part of the hydraulic coupler 15 forms a head portion 29 and the actuator 3 facing part of a foot portion 30 of the hydraulic coupler 15th
  • the hydraulic coupler 15, the actuator 3 with the actuator sleeve 12 and the valve needle 4 are, for example, arranged concentrically to a valve axis 27.
  • the actuator sleeve 12 and the hydraulic coupler 15 are, for example, centered and fixed to one another, for example by means of an encapsulation 36, which extends from the actuator head 16 to the foot part 30 of the hydraulic coupler 15.
  • an actuator housing 31 is provided in the valve housing 1, which hermetically encloses the actuator 3 and the hydraulic coupler 15 and seals against the fuel.
  • the actuator housing 31 is designed, for example, cylindrical and divides the interior of the valve housing 1 into a fuel-laden and with the input channel. 2 flow-connected pressure chamber 32 and the actuator 3 and the hydraulic coupler 21 having actuator chamber 33.
  • the actuator housing 31 is, for example, arranged concentrically in the valve housing 1 and supported at the front ends of the valve housing 1.
  • the actuator housing 31 is connected on the housing cover 1.2 facing end side cohesively and / or non-positively with the housing cover 1.2, for example, welded.
  • the needle shaft 7 of the valve needle 4 extends in the actuator chamber 33 starting from the actuator base 17 in the direction away from the actuator 3 and passes through the actuator housing 31 through an opening 34 into the pressure chamber 32, wherein the opening 34 is sealed by an elastic seal 35, so that no Fuel from the pressure chamber 32 into the actuator chamber 33 passes.
  • the seal 35 is formed, for example, as an elastic bellows, which is made for example of metal, and extends from the needle shaft 7, starting annularly to the actuator housing 31st
  • the return spring 14 rests with its one end against the shoulder 18 of the valve needle 4 and with the other end against the actuator housing 31.
  • the actuator 3 has a positive pole 38 and a grounding pole 39 which is the negative electrical pole.
  • an example two-pole electrical connector 40 with a positive terminal 41 and a ground terminal 42 for contacting with an external voltage source 43 is provided on the valve housing 1, for example on the housing cover 1.2.
  • a high-power switch 44 either a high voltage of the voltage source 43 or no voltage is applied to the plug 40.
  • the high-power switch 44 is connected to a positive pole of the voltage source 43.
  • the voltage source 43 is, for example, a transformer which, for example, increases a 12V on-board voltage of a vehicle to a high voltage.
  • ground pole 39 of the actuator 3 to the ground terminal 42 of the plug 40 and the positive pole 38 of the actuator 3 to the positive terminal 41 of the plug 40 are each electrically connected wirelessly.
  • the wireless connection avoids cable breaks that would cause the fuel injector to fail.
  • the ground terminal 39 of the actuator 3 via the actuator housing 31 and / or the valve housing 1 to the ground terminal 42 of the plug 40 is electrically connected. In this way, the electromagnetic interference emission of the actuator 3 is reduced.
  • the positive terminal 38 of the actuator 3 is electrically contacted, for example via the hydraulic coupler 15 to the positive terminal 41. According to this circuit, the current from the plug 40 is passed via the hydraulic coupler 15 to the actuator 3.
  • the grounding pole 39 of the actuator 3 is electrically contacted with the actuator head 16, the actuator head 16 being connected to the actuator foot 17 via the actuator sleeve 12.
  • the actuator base 17 in turn is electrically connected to the actuator housing 31 via the needle shaft 7 of the valve needle 4, the shoulder 18 of the valve needle 4 and the restoring spring 14 resting against the shoulder 18.
  • the positive connection 41 of the plug 30 is electrically connected, for example, to the head part 29 of the hydraulic coupler 15 and the positive pole 38 of the actuator 3 to a foot part 30 of the hydraulic coupler 15.
  • the head part 29 and the foot part 30 of the hydraulic coupler 15 are electrically conductively connected to each other via the elastic sealing element 24.
  • a first electrical insulation 46 and between the hydraulic coupler 15 and the valve housing 1 a second electrical insulation 47 is provided to a short circuit between the positive terminal 38 and the grounding pole 39 of the actuator 3 and between the positive terminal 41 and the ground terminal 42 of the plug 40 to prevent.
  • the insulation 46,47 are, for example, disc-shaped and made of ceramic or other electrically insulating material.
  • the positive pole 38 of the actuator 3 extends, for example, through a passage opening 50 in the actuator head 16 and extends through the first electrical insulation 46 through a first opening 48 in order to achieve contact with the foot part 30 of the hydraulic coupler 15.
  • the positive terminal 41 of the plug 40 extends through a connection channel 51 in the housing cover 1.2 and extends through the second electrical insulation 47, for example, through a second opening 49 in order to achieve a contact with the head part 29 of the hydraulic coupler 15.
  • the second insulation 47 can also be designed as a piezoceramic to evaluate the force curve of the actuator 3 and to use for controlling the injection.
  • the fuel is passed in the valve housing 1, starting from the inlet channel 2 in the pressure chamber 32 to the valve closing body 8 upstream of the sealing seat 11.
  • the valve closing body 8 lifts off from the sealing seat 11, whereby a connection to the combustion chamber 10 of the internal combustion engine is opened so that fuel flows out into the combustion chamber 10 via an annular outlet gap 52 formed between the valve closing body 8 and the valve seat 9.

Landscapes

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

Claims (7)

  1. Injecteur de carburant comportant un boîtier logeant un actionneur et un coupleur hydraulique,
    l'actionneur ayant un pôle plus et un pôle de masse et
    le boîtier de l'injecteur comporte un connecteur électrique muni d'une borne plus et d'une borne de masse pour être relié à une source de tension,
    caractérisé en ce que
    le pôle de masse (39) de l'actionneur (3) est relié électriquement sans câble, à la borne de masse (42) du connecteur (40) et au pôle plus (38) de l'actionneur (3) avec le branchement plus (41),
    le pôle de masse (39) de l'actionneur (3) est relié électriquement par le boîtier (1) et/ou un boîtier d'actionneur (31) à la borne de masse (42) du connecteur (40) et
    le pôle plus (38) de l'actionneur (3) est relié électriquement au branchement plus (41) par le coupleur hydraulique (15).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'actionneur (3) est mis en précontrainte de pression dans un manchon d'actionneur (12) entre une tête d'actionneur (16) et un pied d'actionneur (17) et le pôle de masse (39) de l'actionneur (3) est en contact électrique avec la tête d'actionneur (16), la tête d'actionneur (16) étant reliée électriquement par le manchon d'actionneur (12) au pied d'actionneur (17).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    le pied d'actionneur (17) est relié électriquement par une aiguille d'injecteur (4) et un ressort de rappel (14) coopérant avec l'aiguille d'injecteur (4), au boîtier d'injecteur (1) et/ou au boîtier d'actionneur (31).
  4. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le branchement plus (41) du connecteur (40) est relié électriquement à une partie de tête (29) du coupleur hydraulique (15) et le pôle plus (38) de l'actionneur (3) est relié à la partie de pied (30) du coupleur hydraulique (15).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la partie de tête (29) et la partie de pied (30) du coupleur hydraulique (15) sont reliées électriquement en conduction par un élément d'étanchéité élastique (24).
  6. Injecteur de carburant selon la revendication 1,
    caractérisé par
    une première isolation électrique (46) entre le coupleur hydraulique (15) et l'actionneur (3) et par une seconde isolation électrique (47) entre le coupleur hydraulique (15) et le boîtier d'injecteur (1).
  7. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le coupleur hydraulique (15) est installé entre le boîtier d'injecteur (1) et l'actionneur (3) dans un segment de l'injecteur de carburant tourné vers le connecteur (40).
EP05101635A 2004-05-04 2005-03-03 Injecteur de carburant Not-in-force EP1593837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021920A DE102004021920A1 (de) 2004-05-04 2004-05-04 Brennstoffeinspritzventil
DE102004021920 2004-05-04

Publications (2)

Publication Number Publication Date
EP1593837A1 EP1593837A1 (fr) 2005-11-09
EP1593837B1 true EP1593837B1 (fr) 2007-09-19

Family

ID=34938872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101635A Not-in-force EP1593837B1 (fr) 2004-05-04 2005-03-03 Injecteur de carburant

Country Status (3)

Country Link
US (1) US7267111B2 (fr)
EP (1) EP1593837B1 (fr)
DE (2) DE102004021920A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1511932B1 (fr) * 2002-04-04 2006-11-29 Siemens Aktiengesellschaft Soupape d'injection
DE112004000356D2 (de) * 2003-03-27 2006-02-23 Siemens Ag Direkt-Einspritzventil in einem Zylinderkopf
DE10357189A1 (de) * 2003-12-08 2005-07-07 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005024049A1 (de) * 2005-05-25 2006-11-30 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung, insbesondere für eine Brennkraftmaschine mit Kraftstoff-Direkteinspritzung
FR2918123A1 (fr) * 2007-06-27 2009-01-02 Renault Sas Dispositif d'injection de fluide.
US8100346B2 (en) * 2007-11-30 2012-01-24 Caterpillar Inc. Piezoelectric actuator with multi-function spring and device using same
US8074625B2 (en) 2008-01-07 2011-12-13 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
US7950596B2 (en) * 2008-06-27 2011-05-31 Caterpillar Inc. Distributed stiffness biasing spring for actuator system and fuel injector using same
DE102009015738B4 (de) * 2009-03-31 2016-02-11 Siemens Aktiengesellschaft Hydraulischer Hubübersetzer und Injektor zur Dossierung von Fluiden
DE102010040612A1 (de) * 2010-09-13 2012-03-15 Siemens Aktiengesellschaft Hydraulischer Temperaturkompensator und hydraulischer Hubübertrager
DE102012204216A1 (de) * 2012-03-16 2013-09-19 Robert Bosch Gmbh Baugruppe
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems
US20140131466A1 (en) * 2012-11-12 2014-05-15 Advanced Green Innovations, LLC Hydraulic displacement amplifiers for fuel injectors
DE102013012444A1 (de) * 2013-07-29 2015-01-29 Astrium Gmbh Ventilanordnung zum Schalten und/oder Regeln eines Medienstroms eines Raumfahrttriebwerks und Raumfahrttriebwerk
DE102013219225A1 (de) * 2013-09-25 2015-03-26 Continental Automotive Gmbh Piezo-Injektor zur Kraftstoff-Direkteinspritzung
DE102013224771A1 (de) * 2013-12-03 2015-06-03 Robert Bosch Gmbh Piezoaktor und dessen Verwendung
US10156295B2 (en) * 2014-02-24 2018-12-18 Fujikin Incorporated Piezoelectric linear actuator, piezoelectrically driven valve, and flow rate control device
DE102015207239A1 (de) * 2015-04-21 2016-10-27 Robert Bosch Gmbh Gasventil
JP7045738B1 (ja) * 2021-03-23 2022-04-01 株式会社リンテック 常時閉型流量制御バルブ

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US4471256A (en) * 1982-06-14 1984-09-11 Nippon Soken, Inc. Piezoelectric actuator, and valve apparatus having actuator
US4649886A (en) * 1982-11-10 1987-03-17 Nippon Soken, Inc. Fuel injection system for an internal combustion engine
DE3533085A1 (de) * 1985-09-17 1987-03-26 Bosch Gmbh Robert Zumessventil zur dosierung von fluessigkeiten oder gasen
DE19519191C2 (de) * 1995-05-24 1997-04-10 Siemens Ag Einspritzventil
DE19650900A1 (de) * 1996-12-07 1998-06-10 Bosch Gmbh Robert Piezoelektrischer Aktuator
DE19901711A1 (de) * 1999-01-18 2000-07-20 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zum Betreiben eines Brennstoffeinspritzventils
DE60043181D1 (de) * 2000-04-01 2009-12-03 Bosch Gmbh Robert Verfahren und Vorrichtung zur Regelung von Spannungen und Spannungsgradienten zum Antrieb eines piezoelektrischen Elements
ITBO20010279A1 (it) * 2001-05-08 2002-11-08 Magneti Marelli Spa Iniettore di carburante con attuatore piezoelettrico alloggiato in una camera isolata
ITBO20010280A1 (it) * 2001-05-08 2002-11-08 Magneti Marelli Spa Iniettore di carburante con attuatore piezoelettrico
DE10149915A1 (de) * 2001-10-10 2003-04-24 Bosch Gmbh Robert Brennstoffeinspritzventil
JP4032729B2 (ja) * 2001-12-19 2008-01-16 松下電器産業株式会社 流体塗布方法
EP1511932B1 (fr) * 2002-04-04 2006-11-29 Siemens Aktiengesellschaft Soupape d'injection
DE10360451B4 (de) 2003-02-27 2014-01-09 Robert Bosch Gmbh Brennstoffeinspritzventil

Also Published As

Publication number Publication date
EP1593837A1 (fr) 2005-11-09
DE502005001511D1 (de) 2007-10-31
DE102004021920A1 (de) 2005-12-01
US20050247803A1 (en) 2005-11-10
US7267111B2 (en) 2007-09-11

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