EP1336045B1 - Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire - Google Patents

Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire Download PDF

Info

Publication number
EP1336045B1
EP1336045B1 EP01996684A EP01996684A EP1336045B1 EP 1336045 B1 EP1336045 B1 EP 1336045B1 EP 01996684 A EP01996684 A EP 01996684A EP 01996684 A EP01996684 A EP 01996684A EP 1336045 B1 EP1336045 B1 EP 1336045B1
Authority
EP
European Patent Office
Prior art keywords
guide bolt
actuator
receiving body
recess
area
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
EP01996684A
Other languages
German (de)
English (en)
Other versions
EP1336045A1 (fr
Inventor
Ngoc-Tam Vu
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1336045A1 publication Critical patent/EP1336045A1/fr
Application granted granted Critical
Publication of EP1336045B1 publication Critical patent/EP1336045B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means

Definitions

  • the invention relates to an injector with an actuator unit.
  • accumulator injection systems are increasingly being used in which very high injection pressures and fast switching speeds are used.
  • fuel is conveyed by means of a high pressure pump in a high-pressure accumulator, from which the fuel is injected by means of injectors in the internal combustion engine.
  • the injector is actuated by an electrically actuated actuator unit, wherein above all the use of piezoelectric actuator units for achieving sufficiently short switching times has proved to be advantageous.
  • the extremely fast-switching actuator units with switching times in the range of less than 200 microseconds but their high-frequency mechanical vibrations to the surrounding injector from. These vibrations then propagate along the injector housing and are directed into the cylinder head of the engine. On the surface of the injector housing and the cylinder head, these mechanical vibrations lead to significant noise that adversely affect ride comfort.
  • a longitudinal expansion is caused in a quartz ceramic piezoelectric element by applying a voltage, which is transmitted to a servo valve in the injector, which in turn opens or closes an injection nozzle in the injector.
  • a voltage which is transmitted to a servo valve in the injector, which in turn opens or closes an injection nozzle in the injector.
  • Such an actuator unit has only small travel paths at high restoring forces. To avoid lifting losses, the piezoelectric Actuator be made very stiff. This leads to a particularly high noise emission.
  • an injection valve which increases a deflection of a piezoelectric actuator via a translation device.
  • two pistons are used.
  • the movement of the first piston produces an increased movement of the second piston.
  • an elastomer is used to transfer force between the first and second pistons.
  • the compensation element consists of an oil-filled chamber, which is arranged between the actuator housing and a piezoelectric actuator. By a corresponding filling of the chamber different temperature-induced changes in length between the piezoelectric actuator and the actuator housing can be compensated.
  • EP 0 218 895 A1 discloses a metering valve for metering liquids or gases.
  • the metering valve uses a piezo stack as actuator.
  • a damping piston is provided which limits a liquid-filled damping chamber.
  • the damping piston is in operative connection with one end of the piezo stack.
  • the damping chamber is connected via a throttle gap with a compensation frame in connection.
  • the damping chamber and the compensation chamber form a hermetic sealed, gas-free liquid cushion, which fixes this stationary with respect to the valve housing during the excitation of the piezo stack.
  • a fuel injection valve which has an annular piezoelectric actuator.
  • the actuator is placed in an actuator housing and biased by a biasing spring to pressure.
  • the biasing spring is inserted between a center flange and an upper end plate of the actuator housing.
  • the center flange is located on the piezoelectric actuator and is also connected to an actuating body which is guided through the recess of the piezoelectric actuator.
  • the actuator body is connected at one end to the valve needle. The other end is passed through the upper portion of the actuator housing and through an opening of the housing cover.
  • a further biasing spring is arranged between a lower end plate of the actuator housing and the valve housing.
  • the invention has for its object to provide an arrangement of an injector and an actuator unit, which has a simpler structure and allows better damping of the actuator unit.
  • an injector housing with an actuator unit having the following features:
  • the actuator unit has a top plate with a guide pin.
  • the injector housing has a receiving body with a recess in which the guide pin is inserted.
  • Between the top plate of the actuator and the receiving body is a first Damping disc arranged.
  • a means for exerting a force on the guide pin is arranged, through which the actuator unit is pressed against the first damping disc.
  • the first damping disc prevents a transmission of structure-borne noise from the actuator unit to the injector housing. On voluminous covers to reduce the noise emission can be omitted.
  • the actuator unit is non-positively connected to the injector. Adhesive layers of adhesive between the injector housing and the first damping disk and between the first damping disk and the actuator unit can be dispensed with.
  • injector and actuator unit is therefore suitable for use of a piezoelectric actuator unit having only small travel paths.
  • actor units which are based on another - for example magnetostrictive - effect can also be used as the actuator unit.
  • the guide pin on a shoulder which is arranged in the recess of the receiving body and having a first surface which faces the top plate.
  • This paragraph thus forms a lateral projection of the guide pin.
  • the receiving body has in the recess on a shoulder which has a second surface which faces the first surface.
  • the first surface and the second surface are thus opposite each other.
  • the means for exerting a force on the guide pin is clamped between the first and second surfaces and forces the first surface and the second surface apart. As a result, the guide pin is pressed into the recess, whereby the actuator unit is pressed against the first damping disc.
  • the shoulder of the guide pin and the shoulder of the receiving body are formed radially around the guide pin circumferentially.
  • the force with which the actuator unit is pressed against the first damping disk can be increased since the means for exerting a force on the guide bolt has larger engagement surfaces available.
  • the shoulder of the guide pin is formed as a disc.
  • the means for exerting a force on the guide pin can be designed as a spring.
  • the spring should be designed very hard to avoid lifting losses.
  • the spring may be formed, for example, as a spiral spring, plate spring or tube spring.
  • the receiving body has an opening through which the guide pin is laterally accessible from the outside.
  • the means for exerting a force on the guide pin comprises a stack of crescent discs arranged between the first surface and the second surface.
  • the assembly can be carried out by first the guide pin is inserted into the recess of the receiving body and then from the side of the crescent discs are placed around the guide pin. In order to prevent falling out of the crescent discs after insertion, it is advantageous to rotate the crescent discs around the guide pin.
  • the opening of the receiving body can be closed again after inserting the crescent discs by, for example, a plastic insert is inserted as a lid or the opening is potted with plastic foam.
  • the first damping disk and the second damping disk are made, for example, of ceramics, fiber-reinforced plastic materials or metal foams which are produced from a paste of metal particles and binder by means of a sintering process.
  • the materials for the first damping disk and the second damping disk have the smallest possible elasticity and at the same time low sound transmission properties to avoid lifting losses of the actuator unit.
  • this means can also be configured differently.
  • the guide pin on a lower part and an adjacent upper part, wherein the lower part has a smaller cross-section and a smaller distance from the top plate than the upper part.
  • the recess of the receiving body has a lower portion whose cross section corresponds to the cross section of the lower part of the guide pin, and an upper portion adjacent thereto, whose cross section corresponds to the cross section of the upper part of the guide pin.
  • the upper part of the guide pin is arranged in the upper portion of the receiving body, while the lower part of the guide pin is partially disposed in the lower portion and partially in the upper portion of the recess.
  • the means for exerting a force on the guide pin has a receiving space arranged in the pressure chamber, which opens into a region of the upper portion of the recess in which the lower part of the guide pin is arranged.
  • the pressure chamber is filled with a liquid.
  • the means for applying a force on the guide pin is such that it pressurizes the liquid. Due to the pressure in the pressure chamber, a force is exerted on the upper part of the guide pin from below, by means of which the actuator unit is pressed against the first damping disc.
  • the lower part of the guide pin in the region of the lower portion of the recess has a circumferential groove in which a first sealing ring is arranged. Also for sealing the pressure chamber, it is advantageous if the upper part of the guide pin has a circumferential groove in which a second sealing ring is arranged.
  • an arrangement of a first injector housing and a first actuator unit is provided.
  • the first actuator unit has a piezoelectric actuator element A, which is fixedly connected to a top plate K of the actuator unit (see FIG. 1). Between the top plate K and a bottom plate of the actuator unit, not shown, a tubular spring R is arranged, which biases the actuator element A.
  • a guide pin F is firmly connected, which projects into a recess U of a receiving body AK of the injector (see Figure 1).
  • a first damping disk D1 made of carbon or glass fiber reinforced plastic is arranged.
  • a paragraph ABK of the receiving body AK extends radially around the guide pin F.
  • the guide pin F has a disc S, which forms a shoulder of the guide pin F.
  • the disk S is held in place by a lock washer SI disposed in a groove of the guide bolt F and by a step of the guide bolt F (see FIG. 1).
  • the disc S has a first surface F1, which faces the top plate K.
  • the paragraph ABK of the receiving body AK has a second surface F2, which faces the first surface F1 (see Figure 1).
  • a second damping disk D2 made of carbon or glass fiber reinforced plastic is arranged on the second surface F2.
  • a helical spring FE is arranged, which presses apart the first F1 and the second surface F2.
  • the recess U of the receiving body AK is bounded from above by a screw plug V.
  • an arrangement of a second injector housing and a second actuator unit is provided.
  • the second actuator unit has an actuator element A ', a tubular spring R', a top plate K ', a guide pin F'.
  • a first damping disk D1 ' is arranged between a receiving body AK' of the second injector housing and the top plate K '.
  • the guide pin F ' has a crescent-shaped disc S', which forms a shoulder with a first surface F1 '.
  • lateral opening O is provided through which the guide pin F' is accessible from the side (see Figure 2a).
  • a second damping disc D2' is arranged on the second surface F2 'as in the first embodiment. Between the second damping disk D2 'and the disk S', a stack of half moon disks H is arranged.
  • the crescent discs H each have the shape of a non-closed ring. The opening of this ring is so large that the half-moon disk H can be placed around the guide pin F 'from the lateral opening O (see FIG. 2b).
  • the half-moon discs H are rotated by 90 ° about the guide pin F '.
  • the opening O is then potted with plastic foam.
  • an arrangement of a third injector housing is provided in a third actuator unit.
  • the third actuator unit comprises an actuator element A ", a tube spring R", a top plate K "and a guide pin F”.
  • the guide pin F '' has a lower part UT and an upper part OT adjacent thereto.
  • the lower part UT has a smaller cross-section than the upper part OT (see FIG. 3).
  • a first damping disk D1 " is arranged between a receiving body AK" of the third injector housing and the top plate K ".
  • the recess U '' has an upper portion OA and a lower portion UA.
  • the upper part OT of the guide pin F '' is arranged in the upper portion OA of the recess U ''.
  • the lower part UT of the guide pin F is partly arranged in the lower section UA and partially in the upper section OA of the recess U" (see FIG. 3).
  • the receiving body AK '' has a pressure chamber D, which opens in the region of the lower part UT of the guide pin F '' in the upper portion OA of the recess U '' (see Figure 3).
  • the pressure chamber D is bounded from above by the upper part OT of the guide pin F '' and by a sealing element I and an adjoining stud SS.
  • the pressure chamber D is pressurized so that the liquid arranged in the pressure chamber D on a head plate K '' facing surface of the upper part OT of the guide pin F '' exerts a force, and thus the third actuator unit against the first Damping disk D1 '' is pressed.
  • the sealing element I prevents leakage of the liquid in the pressure chamber D past the stud SS.
  • a groove is provided in the lower part OT of the guide pin F '', in which a first sealing disc Il is arranged.
  • a groove is provided in the upper part OT of the guide pin F '', in which a second sealing washer I2 is arranged.
  • the groove is formed by a piston KO and a disc S '', wherein the disc S '' by a lock washer SI '' is held.
  • the recess U '' of the receiving body AK '' is bounded from above by a screw plug V ''.

Landscapes

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

Abstract

L'unité d'actionnement selon l'invention comporte une plaque de tête (K) pourvue d'un axe de guidage (F). Le carter d'injecteur présente un corps de réception (AK) pourvu d'une cavité (U) dans laquelle est inséré l'axe de guidage (F). Entre la plaque de tête (K) de l'unité d'actionnement et le corps de réception (AK) est placée une première rondelle d'amortissement (D1). Dans le corps de réception (AK) se trouve un moyen destiné à exercer une force sur l'axe de guidage (F), par lequel l'unité d'actionnement est pressée contre la première rondelle d'amortissement (D1).

Claims (8)

  1. Boîtier d'injecteur comprenant une unité d'actionnement,
    - l'unité d'actionnement comportant une plaque supérieure (K, K', K'') munie d'un goujon de guidage (F, F', F''),
    - le boîtier d'injecteur comportant un corps de réception (AK, AK', AK'') présentant un évidement (U, U', U'') dans lequel le goujon de guidage (F, F', F'') est introduit,
    - un premier disque d'amortissement (D1, D1', D1'') étant disposé entre la plaque supérieure (K, K', K'') de l'unité d'actionnement et le corps de réception (AK, AK', AK''),
    - un moyen pour l'application d'une force au goujon de guidage (F, F', F'') étant disposé dans le corps de réception (AK, AK', AK''), moyen qui presse l'unité d'actionnement contre le premier disque d'amortissement (D1, D1', D1'').
  2. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 1,
    - le goujon de guidage (F, F') comportant un épaulement disposé dans l'évidement (U, U') du corps de réception (AK, AK') et présentant une première face (F1, F1') en regard de la plaque supérieure (K, K'),
    - le corps de réception (AK, AK') comprenant un épaulement (ABK, ABK') situé dans l'évidement (U, U') et comportant une deuxième face (F2, F2') en regard de la première face (F1, F1'),
    - le moyen pour l'application d'une force au goujon de guidage (F, F') étant serré entre la première face (F1, F1') et la deuxième face (F2, F2') et poussant la première face (F1, F1') et la deuxième face (F2, F2') à s'éloigner l'une de l'autre.
  3. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 2,
    - l'épaulement du goujon de guidage (F, F') et l'épaulement (ABK, ABK') du corps de réception (AK, AK') étant disposés radialement autour du goujon de guidage (F, F').
  4. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 2 ou 3,
    - le moyen pour l'application d'une force au goujon de guidage (F) étant réalisé en forme de ressort (FE).
  5. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 3,
    - le corps de réception (AK') présentant une ouverture (O) par laquelle un accès au goujon de guidage (F') depuis l'extérieur est établi,
    - le moyen pour l'application d'une force au goujon de guidage (F') comprenant une pile de disques en demi-lune (H) disposée entre la première face (F1') et la deuxième face (F2').
  6. Boîtier d'injecteur comprenant une unité d'actionnement selon l'une des revendications 2 à 5,
    - dans lequel un deuxième disque d'amortissement (D2, D2', D2 ") est disposé sur la deuxième face (F2, F2', F2'').
  7. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 1,
    - le goujon de guidage (F'') comportant une partie inférieure (UT) et une partie supérieure (OT) attenante, la partie inférieure (UT) ayant une section transversale plus petite et une distance de la plaque supérieure (K'') plus faible que la partie supérieure (OT),
    - l'évidement (U'') du corps de réception (AK'') comportant une partie inférieure (UA) dont la section transversale correspond à la section transversale de la partie inférieure (UT) du goujon de guidage (F''), et une partie supérieure attenante (OA) dont la section transversale correspond à la section transversale de la partie supérieure (OT) du goujon de guidage (F''),
    - la partie supérieure (OT) du goujon de guidage (F'') étant disposée dans la partie supérieure (OA) de l'évidement (U''),
    - la partie inférieure (UT) du goujon de guidage (F'') étant disposée partiellement dans la partie inférieure (UA) et partiellement dans la partie supérieure (OA) de l'évidement (U''),
    - le moyen pour l'application d'une force au goujon de guidage (F'') comprenant un espace de pression (D) disposé dans le corps de réception (AK''), cet espace débouchant dans une zone de la partie supérieure (OA) de l'évidement (U'') dans laquelle est logée la partie inférieure (UT) du goujon de guidage (F''),
    - l'espace de pression (D) étant rempli d'un liquide,
    - le moyen pour l'application d'une force au goujon de guidage (F'') étant agencé pour mettre le liquide sous pression.
  8. Boîtier d'injecteur comprenant une unité d'actionnement selon la revendication 7,
    - la partie inférieure (UT) du goujon de guidage (F'') comportant une rainure périphérique dans la zone de la partie inférieure (UA) de l'évidement (U''), un premier anneau de joint (I1) pour étanchéifier l'espace de pression (D) étant logé dans la rainure,
    - la partie supérieure (OT) du goujon de guidage (F'') comportant une rainure périphérique dans laquelle est logé un deuxième anneau de joint (I2) pour étanchéifier l'espace de pression (D).
EP01996684A 2000-11-20 2001-11-15 Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire Expired - Lifetime EP1336045B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000157495 DE10057495B4 (de) 2000-11-20 2000-11-20 Injektorgehäuse mit einer Aktoreinheit
DE10057495 2000-11-20
PCT/DE2001/004286 WO2002040858A1 (fr) 2000-11-20 2001-11-15 Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire

Publications (2)

Publication Number Publication Date
EP1336045A1 EP1336045A1 (fr) 2003-08-20
EP1336045B1 true EP1336045B1 (fr) 2005-09-21

Family

ID=7663953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996684A Expired - Lifetime EP1336045B1 (fr) 2000-11-20 2001-11-15 Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire

Country Status (3)

Country Link
EP (1) EP1336045B1 (fr)
DE (2) DE10057495B4 (fr)
WO (1) WO2002040858A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132756B4 (de) * 2001-07-10 2005-01-27 L'orange Gmbh Stellglied für Schaltelemente von Kraftstoff-Einspritzvorrichtungen
DE102004044153A1 (de) 2004-09-13 2006-03-30 Siemens Ag Hubvorrichtung und Einspritzventil
DE102004046095B4 (de) * 2004-09-23 2018-02-15 Robert Bosch Gmbh Brennstoffeinspritzventil
FR2875863B1 (fr) * 2004-09-30 2009-05-01 Peugeot Citroen Automobiles Sa Dispositif d'injection a rayonnement accoustique reduit
DE102004050224A1 (de) * 2004-10-15 2006-04-20 Robert Bosch Gmbh Aktormodul
DE102005029976A1 (de) * 2005-06-28 2007-01-11 Robert Bosch Gmbh Brennstoffeinspritzventil
FR2892156B1 (fr) * 2005-10-19 2008-01-18 Peugeot Citroen Automobiles Sa Dispositif d'amortissement des vibrations pour un injecteur de carburant
DE102006009094A1 (de) * 2006-02-28 2007-08-30 Bayerische Motoren Werke Ag Dämpfungseinrichtung und Dämpfungselement
DE102007002682A1 (de) * 2007-01-18 2008-07-24 Bayerische Motoren Werke Aktiengesellschaft Dämpfungseinrichtung und Dämpfungselement
EP2055927B1 (fr) 2007-10-31 2010-05-26 Continental Automotive GmbH Agencement d'actionneur et soupape à injection
DE602007013435D1 (de) * 2007-12-28 2011-05-05 Continental Automotive Gmbh Aktuatoranordnung und Einspritzventil
DE102009057406A1 (de) * 2009-12-08 2011-06-09 Continental Automotive Gmbh Einspritzventil und Anordnung aus einem Einspritzventil und einem Zylinderkopf einer Brennkraftmaschine
DE102010042622A1 (de) * 2010-10-19 2012-04-19 Robert Bosch Gmbh Kraftstoffinjektor, inbesondere Common-Rail-Injektor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533085A1 (de) * 1985-09-17 1987-03-26 Bosch Gmbh Robert Zumessventil zur dosierung von fluessigkeiten oder gasen
US4995587A (en) * 1989-11-03 1991-02-26 Martin Marietta Corporation Motion amplifier employing a dual piston arrangement
DE19727992C2 (de) * 1997-07-01 1999-05-20 Siemens Ag Ausgleichselement zur Kompensation temperaturbedingter Längenänderungen von elektromechanischen Stellsystemen
DE19844837B4 (de) * 1998-09-30 2009-05-07 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19947779A1 (de) * 1999-10-02 2001-04-12 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
EP1336045A1 (fr) 2003-08-20
WO2002040858A1 (fr) 2002-05-23
DE10057495B4 (de) 2005-08-04
DE50107520D1 (de) 2006-02-02
DE10057495A1 (de) 2002-05-29

Similar Documents

Publication Publication Date Title
EP1434937B1 (fr) Soupape d'injection de carburant
EP1111230B1 (fr) Dispositif hydraulique pour transmettre le mouvement d'un actuateur
EP1336045B1 (fr) Carter d'injecteur pourvu d'une unite d'actionnement avec rondelle d'amortissement intermediaire
EP1647703B1 (fr) Module actionneur
DE102008002654A1 (de) Entkoppelungselement für eine Brennstoffeinspritzvorrichtung
EP2376765A1 (fr) Élément de découplage pour un dispositif d'injection de carburant
WO2007068518A1 (fr) Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct
EP1567765A1 (fr) Soupape d'injection
EP1448888A1 (fr) Systeme d'injection de carburant
DE19947779A1 (de) Brennstoffeinspritzventil
DE102006017034B4 (de) Piezo-Aktor, Verfahren zum Herstellen eines Piezo-Aktors und Einspritzsystem mit einem solchen
WO2010142767A1 (fr) Soupape d'injection avec unité de transfert
WO2003052261A1 (fr) Dispositif pour translater une deviation d'un actionneur, notamment pour une soupape d'injection
WO2006089818A1 (fr) Module actionneur dote d'un actionneur piezo-electrique
WO2014114394A1 (fr) Installation d'injection de carburant dotée d'un élément d'acheminement du carburant, d'un injecteur de carburant et d'un élément de liaison
DE10217594A1 (de) Brennstoffeinspritzventil
EP1432908B1 (fr) Soupape d'injection de carburant
DE19858476B4 (de) Vorrichtung zum Übertragen einer Aktorauslenkung auf ein Stellglied und Einspritzventil mit einer solchen Vorrichtung
EP1144848A1 (fr) Soupape d'injection de carburant
DE10040239B4 (de) Geräuschgedämpfte Aktoreinheit
DE19947071B4 (de) Geräuschgedämpfte Aktoreinheit
DE102014217555A1 (de) Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE19947067A1 (de) Geräuschgedämpfte Aktoreinheit mit einem Aktorelement
EP1399664A1 (fr) Soupape de commande de liquides
DE19946965A1 (de) Geräuschgedämpfte Aktoreinheit mit einem Piezoelement

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: 20030415

AK Designated contracting states

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

17Q First examination report despatched

Effective date: 20040213

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

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

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050921

REF Corresponds to:

Ref document number: 50107520

Country of ref document: DE

Date of ref document: 20051027

Kind code of ref document: P

REF Corresponds to:

Ref document number: 50107520

Country of ref document: DE

Date of ref document: 20060202

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed

Effective date: 20060622

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

Ref country code: DE

Payment date: 20081121

Year of fee payment: 8

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

Ref country code: IT

Payment date: 20081122

Year of fee payment: 8

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

Ref country code: FR

Payment date: 20081113

Year of fee payment: 8

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

Ref country code: GB

Payment date: 20081117

Year of fee payment: 8

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

Effective date: 20091115

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100730

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: 20091130

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: 20100601

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: 20091115

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 NON-PAYMENT OF DUE FEES

Effective date: 20091115