EP2642110B1 - Soupape d'injection de combustible - Google Patents

Soupape d'injection de combustible Download PDF

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Publication number
EP2642110B1
EP2642110B1 EP20130155086 EP13155086A EP2642110B1 EP 2642110 B1 EP2642110 B1 EP 2642110B1 EP 20130155086 EP20130155086 EP 20130155086 EP 13155086 A EP13155086 A EP 13155086A EP 2642110 B1 EP2642110 B1 EP 2642110B1
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EP
European Patent Office
Prior art keywords
nozzle needle
actuator
nozzle
spray hole
fuel injection
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.)
Active
Application number
EP20130155086
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German (de)
English (en)
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EP2642110A1 (fr
Inventor
Dietmar Zeh
Thomas Pauer
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2642110A1 publication Critical patent/EP2642110A1/fr
Application granted granted Critical
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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
    • F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion

Definitions

  • the invention relates to a fuel injection valve, in particular an injector for fuel injection systems of internal combustion engines. Specifically, the invention relates to the field of injectors for fuel injection systems of air compressing, self-igniting internal combustion engines.
  • a valve for controlling fluids is known.
  • the known valve has a piezoactuator for actuating a valve member, wherein the valve member is moved out of a valve body upon actuation. Between the piezoelectric actuator and the valve member, a stroke control is formed, wherein the valve has a mechanical stop for limiting the stroke of the valve member.
  • the valve member has a shoulder against which abuts the stopper. The valve member is actuated directly by the piezoelectric actuator, that is to say directly mechanically, so that there is a stroke control of the valve member.
  • valve for controlling fluids has the disadvantage that limited only in the stop position, in which the stroke of the valve member over a certain stroke and thus adjusted, a defined opening cross-section and thus taking into account the other parameters, in particular the opening period , a defined amount of fuel is injectable.
  • the opening and closing movements are less determined, so that comparatively large variations in the metered amount of liquid can result, especially with short operating times.
  • the dosage of comparatively small amounts of fuel is therefore subject to large deviations or fluctuations.
  • the fuel injection valve according to the invention with the features of claim 1 has the advantage that an improved metering of fuel is possible.
  • both comparatively large and comparatively small quantities of fuel can be metered with high accuracy or with a small variation.
  • the nozzle needle has a pot-shaped valve closing body which circumferentially encloses the end of the nozzle body in a closed state, and in the closed state, an inner side of the cup-shaped valve closing body cooperates with an outer side of the nozzle body and closes the first injection hole and the second injection hole.
  • the actuator of the fuel injection valve is used for at least indirect actuation of the nozzle needle.
  • This is to be understood as a direct or indirect actuation of the nozzle needle.
  • the actuator can be designed in particular as a piezoelectric actuator.
  • the actuator actuates the nozzle needle by means of a coupler element which enables a stroke translation from the actuator to the nozzle needle. Specifically, this allows a relatively small stroke of the actuator, but which is done with great force, translated into a larger stroke of the nozzle needle.
  • a coupler element can also serve for temperature expansion compensation.
  • a first injection hole circle which comprises the first injection hole
  • a second injection hole circle which comprises the second injection hole
  • the injection holes of the first injection hole circle with respect to the longitudinal axis of the nozzle needle arranged at a first height are and that the injection holes of the second injection hole circle are arranged with respect to the longitudinal axis of the nozzle needle at a second height.
  • the injection holes of the first injection hole circle are released. In this way, fuel can be injected via the injection holes of the first injection hole circle, for example in the combustion chamber of an internal combustion engine.
  • the injection holes of the second injection hole circle are released.
  • fuel can be injected both via the injection holes of the first injection hole circle and over the injection holes of the second injection hole circle, for example in the combustion chamber of an internal combustion engine.
  • the injected fuel quantity can be preset with high accuracy. Specifically, a reduced amount of fuel can be injected with high accuracy, for example, if only the injection holes of the first injection hole circle are released by a suitable stroke of the nozzle needle.
  • the inside of the cup-shaped valve closing body is designed as a cylinder jacket-shaped inner side and that the outer side of the end of the nozzle body is designed as a cylinder jacket-shaped outer side.
  • the nozzle needle is guided with its cup-shaped valve closing body along the longitudinal axis on the outside of the end of the nozzle body. As a result, an advantageous guidance of the entire nozzle needle with respect to the nozzle body is ensured by the interaction of the cup-shaped valve closing body with the outside of the end of the nozzle body at the same time.
  • the end of the nozzle body is at least substantially hollow cylindrical and that an inner diameter of the hollow cylindrical end of the nozzle body is greater than a needle diameter of a guided through the hollow cylindrical end of the nozzle body needle portion of the nozzle needle.
  • an advantageous guidance of the fuel to the spray holes can be realized.
  • a large flow cross-section can be realized, so that when releasing the spray holes quickly an optimal spray pattern is realized.
  • the first injection hole or the injection holes of the first injection hole circle and / or the second injection hole or the injection holes of the second injection hole circle extend at least approximately perpendicular to the longitudinal axis of the nozzle needle through the end of the nozzle body.
  • the nozzle needle is designed as a nozzle needle opening outward. Furthermore, it is advantageous that an actuation direction of the actuator is rectified to an opening direction of the nozzle needle. As a result, a device for Hubumledge can be saved or an optionally provided coupler element can be made simpler.
  • a coupler element is provided, then it is also advantageous that an actuator chamber is provided in which the actuator is arranged, that a fuel inlet is provided, which leads into the actuator chamber and that one connected to the actuator chamber Coupler space is provided, in which the coupler element is arranged.
  • the actuator can be arranged in an actuator chamber in which there is fuel under high pressure during operation. Depending on the application, a force balance can be achieved thereby.
  • an actuator space is provided in which the actuator is arranged, that a coupler space is provided in which the coupler element is arranged, that a seal is provided which seals the actuator space relative to the coupler space and that provided a leakage return is, which opens into the actuator room.
  • the arrangement of the actuator in a pressure-relieved actuator space is possible. This reduces the requirements for the actuator or an actuator module with the actuator, since no high-pressure resistance is required.
  • Fig. 1 shows a first embodiment of a fuel injection valve 1 of the invention in a schematic, partial sectional view.
  • the fuel injection valve 1 can serve in particular as an injector for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • a preferred use of the fuel injection valve 1 is for a fuel injection system with a common rail, which stores fuel under high pressure and leads to a plurality of fuel injection valves 1.
  • the fuel injection valve 1 according to the invention is also suitable for other applications.
  • the fuel injection valve 1 has a housing 2, which may be designed in several parts.
  • the housing 2 comprises a nozzle body 3, which may be connected to other parts of the housing 2, for example via a nozzle lock nut.
  • Nozzle body 3 is at least partially arranged a nozzle needle 4.
  • an actuator chamber 5 is configured within the housing 2, in which an actuator 6 is arranged.
  • the actuator 6 may be configured in particular as a piezoelectric actuator 6.
  • the actuator 6 is supported on the one hand on a support plate 7, which is connected in a suitable manner to the housing 2.
  • the support plate 7 thus forms a relative to the housing 2 stationary support 7 for the actuator 6.
  • a coupler element 8 is added to the actuator 6. By actuating the actuator 6, this expands in an actuating direction 9, so that a stroke of the actuator 6 in the operating direction 9 is transmitted to the coupler element 8.
  • the actuator 6 actuates the nozzle needle 4 by means of the coupler element 8.
  • the coupler element 8 can in this case in particular enable a thermal expansion compensation.
  • the coupler element 8 can also enable a stroke translation from the actuator 6 to the nozzle needle 4.
  • the coupler element 8 can also be omitted. Specifically, a direct actuation of the nozzle needle 4 by the actuator 6 is possible.
  • the nozzle needle 4 is configured as a nozzle needle 4 opening outward.
  • An opening direction 10 of the nozzle needle 4 is in this case rectified to the actuating direction 9 of the actuator. 6
  • a first injection hole 16 and a second injection hole 17 are configured.
  • the first injection hole 16 and the second injection hole 17 are spaced apart along a longitudinal axis 18 of the nozzle needle 4.
  • the first injection hole 16 is arranged at a first height 19.
  • the second injection hole 17 is arranged at a second height 20.
  • the first height 19 and the second height 20 are determined in this case with respect to the longitudinal axis 18.
  • further injection holes 21, 22 are provided, of which in addition to the spray holes 16, 17, only the injection holes 21, 22 are shown.
  • the first injection hole 16, the injection hole 21 and further injection holes are arranged at the first height 19 and part of a first injection hole circle 16, 21.
  • the second injection hole 17, the injection hole 22 and further injection holes are arranged at the second height 20 and part of a second injection hole circle 17, 22.
  • the nozzle needle 4 has a cup-shaped valve closing body 30.
  • the cup-shaped valve closing body 30 encloses the end 15 of the nozzle body 3 circumferentially.
  • An inner side 31 of the cup-shaped valve closing body 30 in this case interacts with an outer side 32 of the nozzle body 3. In this way, the cup-shaped valve closing body 30 closes the injection holes 16, 21 of the first injection hole circle 16, 21 and the injection holes 17, 22 of the second injection hole circle 17, 22 in the closed state.
  • the end 15 of the nozzle body 3 is designed as a hollow cylinder.
  • an inner diameter 33 of the hollow cylindrical end 15 of the nozzle body 3 is greater than a needle diameter 34 of a guided through the hollow cylindrical end 15 of the nozzle body 3 needle portion 35 of the nozzle needle 4.
  • an annular fuel gap 36 is formed between the nozzle body 3 and the nozzle needle 4 the fuel to the spray holes 16, 17, 21, 22 of the two injection holes circles is performed.
  • the nozzle needle 4 executes a stroke which is at least as large as the first stroke 23, but smaller than the second stroke 24, then the injection holes 16, 21 of the first injection hole circle 16, 21 are released, while the injection holes 17, 22 of the second Spray hole circle 17, 22 are still closed.
  • fuel is injected via the injection holes 16, 21 of the first injection hole circle 16, 21, for example, into the combustion chamber of an internal combustion engine.
  • the injection holes 16, 21 of the first injection hole 16, 21 extend perpendicular to the longitudinal axis 18.
  • a larger amount of fuel is then injected per unit time.
  • the injection holes 17, 22 of the second injection hole circle 17, 22 extend perpendicular to the longitudinal axis 18 of the nozzle needle 4 through the end 15 of the nozzle body third
  • the inner side 31 of the cup-shaped valve closing body 30 is designed as a cylinder jacket-shaped inner side 31.
  • the outer side 32 of the end 15 of the nozzle body 3 is designed as a cylinder jacket-shaped outer side 32.
  • the nozzle needle 4 may be configured in one or more pieces. Specifically, the cup-shaped valve closing body 30 may be suitably connected to the needle portion 35.
  • a Variodüse 37 can be configured at the end 15 of the nozzle body 3.
  • the stroke of the nozzle needle 4 of the fuel injection over the total number of injection ports 17, 18, 21, 22 released opening cross-section can be selectively varied.
  • more than two injection orifices or more than two injection holes 16, 17 can be provided, which are distributed at different heights 19, 20 along the longitudinal axis 18.
  • a fully flexible embodiment of the injection pattern in the combustion chamber is possible. This results in emission and consumption advantages with respect to the internal combustion engine. This is due to the advantageous control of the nozzle needle 4 of the actuator 6 high robustness, high durability and a cost-effective and compact design allows.
  • the cup-shaped valve closure member 30 may be advantageously designed partially sleeve-shaped.
  • the actuator 6 can thus be charged, so that, for example, a first stroke 23 or a second stroke 24 of the nozzle needle 4 is achieved as a function of the supplied charge quantity.
  • the actuator 6 shortens again against the operating direction 9, whereby the nozzle needle 4 closes against the opening direction 10.
  • the closing of the nozzle needle 4 can be assisted by one or more suitable spring elements.
  • a starting position of the nozzle needle 4 can also be predetermined via such a spring element.
  • a fuel inlet 38 is provided, which leads into the actuator chamber 5. Furthermore, a coupler space 39 connected to the actuator space 5 is provided, in which the coupler element 8 is arranged.
  • the supplied via the fuel inlet 38, under high pressure fuel flows through the actuator chamber 5, the coupler chamber 39 and the fuel gap 36 to the spray holes 16, 17, 21, 22.
  • an actuator module is provided with the actuator 6, which allows a correspondingly high-pressure-proof sealing of the actuator 6.
  • Fig. 2 shows a second embodiment of a fuel injection valve 1 of the invention in a schematic, partial sectional view.
  • a seal 45 is provided, which is configured by one or more sealing elements 45.
  • the seal 45 seals the actuator chamber 5 with respect to the coupler chamber 39.
  • the fuel inlet 38 is guided here into the coupler space 39.
  • the actuator chamber 5, however, is depressurized.
  • a leakage return 46 is provided, which opens into the actuator chamber 5.
  • the fuel inlet 38 is arranged close to the nozzle.
  • the fuel is in this case guided by the fuel gap remaining in the nozzle needle chamber 36, which is separated from the actuator chamber 5 by means of the seal 45.

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

Claims (10)

  1. Soupape d'injection de carburant (1), en particulier injecteur pour systèmes d'injection de carburant de moteurs à combustion interne, comprenant un corps d'injecteur (3), une aiguille d'injecteur (4) disposée au moins partiellement dans le corps d'injecteur (3) et un actionneur (6) qui sert à l'actionnement au moins indirect de l'aiguille d'injecteur (4), au moins un premier trou d'injection (16) et au moins un deuxième trou d'injection (17) étant configurés à une extrémité (15) du corps d'injecteur (3), lesquels trous d'injection sont espacés l'un de l'autre le long d'un axe longitudinal (18) de l'aiguille d'injecteur (4), l'aiguille d'injecteur (4) libérant le premier trou d'injection (16) à partir d'une première levée (23) de l'aiguille d'injecteur (4) et l'aiguille d'injecteur (4) libérant également le deuxième trou d'injection (17) à partir d'une deuxième levée (24) de l'aiguille d'injecteur (4) qui est plus grande que la première levée (23) de l'aiguille d'injecteur (4),
    caractérisée en ce que
    l'aiguille d'injecteur (4) comprend un corps de fermeture de soupape (30) en forme de pot, qui entoure de manière périphérique l'extrémité (15) du corps d'injecteur (3) dans un état fermé, et en ce qu'à l'état fermé, un côté intérieur (31) du corps de fermeture de soupape (30) en forme de pot coopère avec un côté extérieur (32) du corps d'injecteur (3) et ferme le premier trou d'injection (16) ainsi que le deuxième trou d'injection (17).
  2. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce
    qu'un premier cercle de trous d'injection (16, 21) qui comporte le premier trou d'injection (16) et un deuxième cercle de trous d'injection (17, 22) qui comporte le deuxième trou d'injection (17) sont prévus à l'extrémité (15) du corps d'injecteur (3), en ce que les trous d'injection (16, 21) du premier cercle de trous d'injection (16, 21) sont disposés à une première hauteur (19) par rapport à l'axe longitudinal (18) de l'aiguille d'injecteur (4) et en ce que les trous d'injection (17, 22) du deuxième cercle de trous d'injection (17, 22) sont disposés à une deuxième hauteur (20) par rapport à l'axe longitudinal (18) de l'aiguille d'injecteur (4).
  3. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    le côté intérieur (31) du corps de fermeture de soupape (30) en forme de pot est configuré sous forme de côté intérieur (31) en forme d'enveloppe cylindrique et en ce que le côté extérieur (32) de l'extrémité (15) du corps d'injecteur (3) est configuré sous forme de côté extérieur (32) en forme d'enveloppe cylindrique.
  4. Soupape d'injection de carburant selon la revendication 1 ou 3,
    caractérisée en ce que
    l'aiguille d'injecteur (4) est guidée par son corps de fermeture de soupape (30) en forme de pot le long de l'axe longitudinal (18) sur le côté extérieur (32) de l'extrémité (15) du corps d'injecteur (3).
  5. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    l'extrémité (15) du corps d'injecteur (3) est configurée au moins essentiellement sous forme cylindrique creuse et en ce qu'un diamètre intérieur (33) de l'extrémité de forme cylindrique creuse (15) du corps d'injecteur (3) est supérieur à un diamètre d'aiguille (34) d'une portion d'aiguille (35) de l'aiguille d'injecteur (4) guidée à travers l'extrémité de forme cylindrique creuse (15) du corps d'injecteur (3).
  6. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    le premier trou d'injection (16), respectivement les trous d'injection (16, 21) du premier cercle de trous d'injection (16, 21), et/ou le deuxième trou d'injection (17), respectivement les trous d'injection (17, 22) du deuxième cercle de trous d'injection (17, 22), s'étendent au moins approximativement perpendiculairement à l'axe longitudinal (18) de l'aiguille d'injecteur (4) à travers l'extrémité (15) du corps d'injecteur (3).
  7. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    l'aiguille d'injecteur (4) est configurée sous forme d'aiguille d'injecteur (4) s'ouvrant vers l'extérieur et/ou en ce qu'un sens d'actionnement (9) de l'actionneur (6) est dans le même sens qu'un sens d'ouverture (10) de l'aiguille d'injecteur (4).
  8. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce que
    l'actionneur (6) actionne l'aiguille d'injecteur (4) au moyen d'un élément d'accouplement (8) et en ce que l'élément d'accouplement (8) rend possible une compensation de dilatation thermique et/ou une transmission de levée de l'actionneur (6) à l'aiguille d'injecteur (4).
  9. Soupape d'injection de carburant selon la revendication 8,
    caractérisée en ce
    qu'un espace d'actionneur (5) est prévu, dans lequel l'actionneur (6) est disposé, en ce qu'une arrivée de carburant (38) est prévue, laquelle mène à l'espace d'actionneur (5) et en ce qu'un espace d'accouplement (39) relié à l'espace d'actionneur (5) est prévu, dans lequel espace d'accouplement l'élément d'accouplement (8) est disposé.
  10. Soupape d'injection de carburant selon la revendication 8,
    caractérisée en ce
    qu'un espace d'actionneur (5) est prévu, dans lequel l'actionneur (6) est disposé, en ce qu'un espace d'accouplement (39) est prévu, dans lequel l'élément d'accouplement (8) est disposé, en ce qu'un joint d'étanchéité (45) est prévu, lequel rend l'espace d'actionneur (5) étanche par rapport à l'espace d'accouplement (39), et en ce qu'une conduite de retour de fuite est prévue, laquelle débouche dans l'espace d'actionneur (5).
EP20130155086 2012-03-21 2013-02-13 Soupape d'injection de combustible Active EP2642110B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210204482 DE102012204482A1 (de) 2012-03-21 2012-03-21 Brennstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP2642110A1 EP2642110A1 (fr) 2013-09-25
EP2642110B1 true EP2642110B1 (fr) 2015-04-22

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Application Number Title Priority Date Filing Date
EP20130155086 Active EP2642110B1 (fr) 2012-03-21 2013-02-13 Soupape d'injection de combustible

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EP (1) EP2642110B1 (fr)
DE (1) DE102012204482A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021202732A1 (de) * 2021-03-22 2022-09-22 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzdüse, Kraftstoffinjektor mit Einspritzdüse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9813743D0 (en) * 1998-06-26 1998-08-26 Lucas Ind Plc Fuel injector
JP3518521B2 (ja) * 2001-04-11 2004-04-12 トヨタ自動車株式会社 内燃機関の燃料噴射制御装置
DE10123218A1 (de) 2001-05-12 2002-11-14 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
EP1970556B1 (fr) * 2007-03-15 2009-12-30 Ford Global Technologies, LLC Injecteur
EP2273099B1 (fr) * 2009-06-17 2012-02-22 Delphi Technologies, Inc. Injecteur de carburant avec compensateur de jeu

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Publication number Publication date
DE102012204482A1 (de) 2013-09-26
EP2642110A1 (fr) 2013-09-25

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