EP3303817B1 - Injecteur common rail - Google Patents

Injecteur common rail Download PDF

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Publication number
EP3303817B1
EP3303817B1 EP15723543.3A EP15723543A EP3303817B1 EP 3303817 B1 EP3303817 B1 EP 3303817B1 EP 15723543 A EP15723543 A EP 15723543A EP 3303817 B1 EP3303817 B1 EP 3303817B1
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EP
European Patent Office
Prior art keywords
nozzle needle
nozzle
common
axial
stroke
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
EP15723543.3A
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German (de)
English (en)
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EP3303817A1 (fr
Inventor
Hans-Peter ZEITLHOFER
Richard Rauecker
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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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3303817A1 publication Critical patent/EP3303817A1/fr
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Publication of EP3303817B1 publication Critical patent/EP3303817B1/fr
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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
    • F02M61/161—Means for adjusting injection-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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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

Definitions

  • the invention relates to a common rail injector according to the preamble of claim 1.
  • Such a common rail injector is from the DE 199 36 668 A1 ( Fig. 7 ) known to the applicant.
  • the high-pressure chamber is essentially formed within a nozzle body of the injector housing.
  • a control chamber sleeve is also arranged, in which the end area of a nozzle needle opposite an injection opening is inserted.
  • the nozzle needle is acted upon by force in its closing direction by means of a closing or return spring.
  • the closing spring is supported on the one hand against a support ring resting on a radially circumferential collar of the control chamber sleeve and on the other hand against a sleeve-shaped element which radially surrounds the nozzle needle.
  • the sleeve-shaped element rests against a diameter step of the nozzle needle with an axial interposition of a support ring.
  • an axial gap is formed between the facing end faces of the control chamber sleeve and the element, the size of which the maximum stroke depends on.
  • common rail injectors with nozzle needles are known from the prior art, which in contrast to that in FIG DE 199 36 668 A1 disclosed nozzle needle extend axially over several subregions of the injector housing.
  • An axial stroke stop by means of separate or specially designed components as in the prior art mentioned at the beginning is not provided in common rail injectors of this type. Rather, the maximum stroke in such a common rail injector is limited in that the end face of the nozzle needle facing away from the injection opening rests axially against a surface of the control chamber that delimits the control chamber on the side facing away from the nozzle needle.
  • Further common rail injectors are known from JP 2006 274942 A , DE 10 2006 050065 A1 , DE 10 2011 078429 A1 and US 2010/019066 A1 .
  • the invention is based on the object of developing a common rail injector according to the preamble of claim 1 in such a way that the maximum achievable opening stroke of the nozzle needle can be set even with relatively long nozzle needles, with one at the same time advantageous assembly of the nozzle needle and the components of the stroke limiting device that interact directly with the nozzle needle are to be made possible. Furthermore, a local separation of a control chamber and the setting of the maximum achievable opening stroke of the nozzle needle should be achieved in order to be able to optimally design the corresponding components.
  • nozzle needle is a second element of the device for setting the maximum stroke of the nozzle needle, which surrounds the nozzle needle radially and axially on the side facing away from the first element is arranged stationary in the injector housing, axially completely penetrated and the end region of the nozzle needle dipping into the control chamber is arranged axially spaced from the second element.
  • the high-pressure chamber in the nozzle body and in the further housing element is formed by a bore section on each side facing one another, the bore section formed in the further housing element for forming the stop surface for the second element having a smaller diameter than the bore section formed in the nozzle body, and the second Element has at least one passage for fuel between the two bore sections.
  • This passage is of particular importance because it ensures that even when the nozzle needle is fully open, in which the second element is on the face of the further housing elements is applied, an inflow of fuel into the area of the at least one injection opening is made possible.
  • this means that the device for limiting the maximum opening stroke of the nozzle needle is arranged or formed separately from the control chamber or the second element forming the control chamber. This makes it possible, especially when using relatively long nozzle needles, to arrange the control chamber on the side of the nozzle needle facing away from the at least one injection opening in the injector housing, and the device for limiting the maximum opening stroke of the nozzle needle relatively close to the at least one injection opening in the injector housing.
  • Such a functional separation of the assemblies also enables, in particular, an advantageous assembly of the components of the common rail injector.
  • the device for setting the maximum stroke of the nozzle needle is arranged in the area of a nozzle body to which at least one further housing element is connected in the axial direction on the side facing away from the at least one injection opening, and that the control chamber is arranged in the area of the further housing element.
  • the further housing element with an end face facing the nozzle body forms an axial stop surface for the second element of the device.
  • the at least one passage in the second element as over a partial area the axial extent of the second element extending longitudinal slot is formed, which extends from the end face of the second element facing away from the nozzle body.
  • the facing ends of the two elements are in contact with the maximum stroke of the nozzle needle, and that the maximum opening stroke of the nozzle needle through the Size of an axial gap formed between the end faces of the two elements is defined.
  • a return or closing spring is used to apply force to the nozzle needle in its closed position, on the one hand, to move the nozzle needle into its closed position during operation of the common rail injector when the control is interrupted, and on the other hand, to avoid undesired injection of fuel into the combustion chamber of an internal combustion engine.
  • the spring stiffness or the characteristics of the closing spring must be precisely matched.
  • the maximum opening stroke of the nozzle needle is limited by the end region of the nozzle needle that plunges into the control chamber, and that at the maximum opening stroke of the nozzle needle the two elements are arranged at a distance from one another, forming an axial gap formed between the two elements are. The two elements thus serve to adjust or precisely position the closing spring in relation to the nozzle needle, and not to limit the maximum opening stroke of the nozzle needle.
  • the nozzle needle has a radially circumferential seat for the first element on which the first element rests axially so that the second element with axial interposition of the return spring connects to the first element that the movement of the second element is limited by a nozzle module, the nozzle needle being part of the nozzle module, and that the nozzle module forms a preassembled assembly that can be inserted into the injector housing.
  • the high-pressure chamber is hydraulically connected to an inlet channel for fuel under high pressure, and that the inlet channel opens radially into the high-pressure chamber in an axial area between the at least one injection opening and the control chamber.
  • the opening area of the inlet channel opens into the high-pressure chamber approximately in the middle between the at least one injection opening and the control chamber.
  • the Indian Fig. 1 The common rail injector 10 shown is used to inject fuel into the combustion chamber, not shown, of an internal combustion engine, in particular a compression-ignition internal combustion engine.
  • the injector 10 has an injector housing 11 consisting of several parts.
  • the injector housing 11 essentially comprises two parts, a nozzle body 12 and a housing element 13 connected to the nozzle body 12 in the axial direction, which in practice usually consists of several parts, also connected to one another and connected in the axial direction.
  • the pressure-tight connection between the nozzle body 12 and the housing 13 takes place in a manner known per se by means of a nozzle clamping nut 14.
  • the nozzle body 12 On the side facing the combustion chamber of the internal combustion engine, the nozzle body 12 has at least one injection opening 15 for injecting fuel.
  • a high-pressure chamber 18 is formed within the injector housing 11, which is essentially formed by a plurality of bore sections with different diameters, formed in the nozzle body 12, and a plurality of bore sections, also with different diameters, formed in the housing element 13.
  • the high-pressure chamber 18 can be supplied with fuel which is under system pressure via an inlet channel 19.
  • the inlet channel 19 opens approximately in a central region of the high-pressure chamber 18 (based on the axial extent of the injector 10), whereby it is radial, i.e. perpendicular to a longitudinal axis 21 of the injector 10, in which the high pressure chamber 18 opens.
  • an outlet channel 22 is formed, which serves to discharge fuel located in a low-pressure region 42 of the injector 10.
  • a nozzle needle 25 is arranged in the longitudinal axis 21 so that it can move in the direction of the double arrow 26.
  • the at least one injection opening 15 formed in the injector housing 11 or the nozzle body 12 is at least indirectly closed in order to prevent fuel from being injected into the combustion chamber of the internal combustion engine.
  • a sealing seat is formed between the end region 27 of the nozzle needle 25 facing the at least one injection opening 15 and the inside of the nozzle body 12.
  • fuel can flow out of the high-pressure chamber 18 through the at least one injection opening 15 into the combustion chamber of the internal combustion engine in a manner known per se.
  • the nozzle needle 25 is part of one in the Fig. 5
  • the nozzle module 30, viewed in the axial direction, comprises, in addition to the nozzle needle 25, a pin-shaped center piece 31 and a likewise pin-shaped valve piston 32.
  • the nozzle needle 25, the center piece 31 and valve piston 32 are welded together in the transverse direction, in particular by laser welds.
  • the nozzle module 30 also has a stop sleeve 33 that forms a first element of a device 50 for limiting the maximum opening stroke of the nozzle needle 25, a return spring 34 designed as a compression spring, and an adjusting ring 35.
  • the adjusting ring 35 forms a second element of the device 50 for limiting the maximum opening stroke of the nozzle needle 25 and is completely penetrated or penetrated by the nozzle needle 25 in the axial direction.
  • the stop sleeve 33, the return spring 34 and the adjusting ring 35 are attached the nozzle needle 25 is mounted before the nozzle needle 25 is welded to the center piece 31. Due to the different diameters of the nozzle needle 25 and the center piece 31, the stop sleeve 33, the return spring 34 and the setting ring 35 are axially captive to the named components or the nozzle module 30 after the nozzle needle 25 is welded to the center piece 31, whereby the nozzle module 30 represents a pre-assemblable unit for the injector 10.
  • a control chamber sleeve 36 is arranged inside the injector housing 11 on the side of the nozzle module 30 facing away from the at least one injection opening 15.
  • the control chamber sleeve 36 has, on the side facing the valve piston 32, a blind hole 37 into which the valve piston 32 of the nozzle module 30 dips with its end region 44. In particular, the end region 44 is axially spaced from the device 50 or the setting ring 35.
  • the valve piston 32 delimits a control chamber 38 within the blind hole 37, which is hydraulically connected to the high pressure chamber 18 via an inlet bore 39.
  • the control chamber 38 can be hydraulically relieved of pressure into the low-pressure region 42 of the injector 10, which in turn is connected to the discharge channel 22, via a through-hole 41 formed in the control chamber sleeve 36.
  • the through-hole 41 can be closed on the side facing away from the valve piston 32 by means of a valve member 43, which is spherical in the exemplary embodiment.
  • the actuation of the valve member 43 is carried out by way of example, and not by way of limitation, via a magnetic actuator 45 in a manner known per se, in such a way that when the magnetic actuator 45 is energized, the valve member 43 lifts off the through-bore 41 to prevent fuel from flowing out of the control chamber 38 to allow in the low pressure region 42 of the injector 10.
  • the fuel flowing out of the control chamber 38 also causes the nozzle module 30 or the nozzle needle 25 to be actuated in a known manner such that the nozzle needle 25 lifts from its sealing seat to release the at least one injection opening 15.
  • the stop sleeve 33, the return spring 34 and the setting ring 35 are arranged within a bore section 46 of the nozzle body 12.
  • the housing element 13 At the nozzle body 12 closes in axial direction the housing element 13, whereby a bore section 48 opening into the end face 47 of the housing element 13 has a smaller diameter than the bore section 46 in the area of the setting ring 35 or the bore section 46. This forms the end face 47 for the end face of the setting ring facing it 35 from an axial stop.
  • the setting ring 35 has, for example, three longitudinal slots 49 which are arranged in equal angular sections relative to one another and each form a passage for fuel from the bore section 48 into the bore section 46.
  • the longitudinal slots 49 each rectangular in a side view in the exemplary embodiment, extend over a partial area of the length L of the adjusting ring 35 and start from the end face of the adjusting ring 35 facing the housing element 13.
  • the stop sleeve 33 which radially surrounds the nozzle needle 25 has a radially circumferential collar 51 on the side facing away from the setting ring 35, which collar rests axially on a seat or a shoulder 52 of the nozzle needle 25.
  • the return spring 34 is supported between the collar 51 and the end face of the setting ring 35 facing the return spring 34.
  • the return spring 34 acts on the nozzle needle 25 or the nozzle module 33 with a spring force such that the nozzle needle 25 is pressed in the direction of the at least one injection opening 15 or in the direction of the sealing seat.
  • the restoring spring 34 ensures that when the magnetic actuator 45 is de-energized, the nozzle needle 25 always forms the sealing seat in order to prevent fuel from injecting into the combustion chamber of the internal combustion engine.
  • An axial gap 55 is formed between the end face 53 of the stop sleeve 33 facing away from the collar 51 and the end face 54 of the adjusting ring 35 facing the end face 53.
  • the size of the axial gap 55 is set by varying the length I of the stop sleeve 33. In particular, the maximum stroke of the nozzle needle 25 or of the nozzle module 30 in the opening direction is limited by the size of the axial gap 55.
  • the end face 54 of the setting ring 35 thus forms a stop for the stop sleeve 33 in the opening direction of the nozzle needle 25.
  • the nozzle needle 25 moves against the spring force of the return spring 34 in the opening direction until the stop sleeve 33 rests axially on the setting ring 35, i.e. the axial gap 55 is zero. In this position, the end face of the valve piston 32 facing the base of the blind hole 37 of the control chamber 38 is still spaced from the base of the blind hole 37.
  • the length I of the stop sleeve 33 is selected to be so small that the maximum opening stroke of the nozzle needle 25 or the nozzle module 30 occurs when the valve piston 32 rests against the base of the blind hole 37 of the control chamber 38.
  • the stop sleeve 33 still axially spaced from the setting ring 35, that is, that an axial gap 55 is always formed greater than zero.
  • the dimensions of the setting ring 35 and the stop sleeve 33 define or limit the installation space of the return spring 34 in order to set or define the required return characteristic or return force of the return spring 34.
  • the injector 10a has a sleeve-shaped adjusting ring 35a with a constant diameter with a plurality of through bores 57 for the fuel formed on its wall in the radial direction.
  • the setting ring 35a cooperates with a stop ring 58 which has a centering section 59 projecting into the setting ring 35a.
  • the adjusting ring 35a has flat, closed end faces. The setting of the maximum axial gap 55 can take place by varying the height of the setting ring 35a, the setting ring 35a being able to be connected to the nozzle module 30 later.

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

Claims (9)

  1. Injecteur à rampe commune (10 ; 10a), muni d'un boîtier d'injecteur (11), dans lequel est agencée une aiguille de buse (25) agencée de manière à pouvoir effectuer un mouvement de course dans une chambre haute pression (18) afin de libérer ou de bloquer au moins une ouverture d'injection (15) formée dans le boîtier d'injecteur (11), une zone d'extrémité, détournée de ladite au moins une ouverture d'injection (15), de l'aiguille de buse (25) plongeant dans un élément (36) pour la formation d'une chambre de commande (38), et l'aiguille de buse (25) coopérant avec un dispositif (50) pour la limitation de la course d'ouverture maximale de l'aiguille de buse (25), le dispositif (50) comprenant un premier élément (33), de préférence en forme de douille, agencé, de préférence de manière fixe axialement, sur l'aiguille de buse (25), qui peut être sollicité par une force dans la direction de fermeture de l'aiguille de buse (25) au moyen d'un ressort de rappel (34), et un deuxième élément (35 ; 35a), de préférence également en forme de douille, qui entoure radialement l'aiguille de buse (25) et est agencé de manière fixe axialement dans le boîtier d'injecteur (11) sur le côté détourné du premier élément (33), l'aiguille de buse (25) traversant axialement entièrement le deuxième élément (35 ; 35a) et la zone d'extrémité (44), plongeant dans la chambre de commande (38), de l'aiguille de buse (25) étant agencée écartée axialement du deuxième élément (35 ; 35a), caractérisé en ce qu'un élément boîtier supplémentaire (13) muni d'une surface frontale (47) tournée vers le corps de buse (12) forme une surface de butée axiale pour le deuxième élément (35 ; 35a) du dispositif (50) et la chambre haute pression (18) est formée dans le corps de buse (12) et dans l'élément boîtier supplémentaire (13) sur des côtés tournés l'un vers l'autre de respectivement une section d'alésage (46, 48), la section d'alésage (48) formée dans l'élément boîtier supplémentaire (13) pour la formation de la surface de butée pour le deuxième élément (35 ; 35a) présentant un diamètre plus petit que la section d'alésage (46) formée dans le corps de buse (12), et en ce que le deuxième élément (35 ; 35a) comprend au moins un passage pour du carburant entre les deux sections d'alésage (46, 48).
  2. Injecteur à rampe commune selon la revendication 1, caractérisé en ce que le dispositif (50) est agencé dans la zone d'un corps de buse (12), à laquelle l'élément boîtier supplémentaire (13) est contigu sur le côté détourné de ladite au moins une ouverture d'injection (15) en direction axiale, et en ce que la chambre de commande (38) est agencée dans la zone de l'élément boîtier supplémentaire (13).
  3. Injecteur à rampe commune selon la revendication 1, caractérisé en ce que ledit au moins un passage est configuré sous la forme d'une fente longitudinale (49) s'étendant sur une zone partielle de l'extension axiale (L) du deuxième élément (35), qui part du côté frontal, détourné du corps de buse (12), du deuxième élément (35) .
  4. Injecteur à rampe commune selon la revendication 1, caractérisé en ce que ledit au moins un passage est configuré sous la forme d'un alésage de passage (57).
  5. Injecteur à rampe commune selon l'une quelconque des revendications 1 à 4, caractérisé en ce que pour la limitation de la course d'ouverture de l'aiguille de buse (25), les côtés frontaux (53, 54) tournés l'un vers l'autre des deux éléments (33, 35) sont en contact d'appui en cas de course maximale de l'aiguille de buse (25), et en ce que la course d'ouverture maximale de l'aiguille de buse (25) est définie par la taille d'un espace axial (55) formé entre les côtés frontaux (53, 54) des deux éléments (33, 35).
  6. Injecteur à rampe commune selon l'une quelconque des revendications 1 à 4, caractérisé en ce que pour la limitation de la course d'ouverture de l'aiguille de buse (25), les côtés frontaux (53, 54) tournés l'un vers l'autre des deux éléments (33, 35a) sont en contact d'appui en cas de course maximale de l'aiguille de buse (25) avec intercalage d'un anneau de butée (58), et en ce que la course d'ouverture maximale de l'aiguille de buse (25) est définie par la taille d'un espace axial (55) formé entre un élément (33) et l'anneau de butée (58).
  7. Injecteur à rampe commune selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'ajustement de la course d'ouverture maximale de l'aiguille de buse (25) a lieu par une variation de la longueur (l) du premier élément (33) ou du deuxième élément (35a).
  8. Injecteur à rampe commune selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'aiguille de buse (25) comprend un siège radialement circonférentiel (52) pour le premier élément (33), sur lequel le premier élément (33) s'appuie axialement, en ce que le deuxième élément (35) est contigu au premier élément (33) avec intercalage axial du ressort de rappel (34), en ce que le mouvement du deuxième élément (35) est limité par un module de buse (30), l'aiguille de buse (25) faisant partie du module de buse (30), et en ce que le module de buse (30) forme une unité pouvant être prémontée, insérable dans le boîtier d'injecteur (11).
  9. Injecteur à rampe commune selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la chambre haute pression (18) est reliée hydrauliquement avec un canal d'alimentation (19) pour du carburant sous haute pression, et en ce que le canal d'alimentation (19) débouche radialement dans la chambre haute pression (18) dans une zone axiale située entre ladite au moins une ouverture d'injection (15) et la chambre de commande (38).
EP15723543.3A 2015-05-28 2015-05-28 Injecteur common rail Active EP3303817B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/061803 WO2016188577A1 (fr) 2015-05-28 2015-05-28 Injecteur à rampe commune

Publications (2)

Publication Number Publication Date
EP3303817A1 EP3303817A1 (fr) 2018-04-11
EP3303817B1 true EP3303817B1 (fr) 2020-12-16

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Family Applications (1)

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EP15723543.3A Active EP3303817B1 (fr) 2015-05-28 2015-05-28 Injecteur common rail

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EP (1) EP3303817B1 (fr)
WO (1) WO2016188577A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932683A (ja) * 1995-07-14 1997-02-04 Isuzu Motors Ltd 内燃機関の燃料噴射装置
DE19839632A1 (de) * 1998-08-31 2000-03-02 Siemens Ag Kraftstoffeinspritzdüse mit Hubbegrenzung
DE19936668A1 (de) 1999-08-04 2001-02-22 Bosch Gmbh Robert Common-Rail-Injektor
DE10152268A1 (de) * 2001-10-20 2003-04-30 Bosch Gmbh Robert Einspritzventil
JP2006274942A (ja) * 2005-03-29 2006-10-12 Bosch Corp 燃料噴射弁
DE102006050065A1 (de) * 2006-10-24 2008-04-30 Siemens Ag Fluiddosiervorrichtung
DE102008035087B4 (de) * 2008-07-28 2015-02-12 Continental Automotive Gmbh Einspritzventil
DE102011078429A1 (de) * 2011-06-30 2013-01-03 Robert Bosch Gmbh Brennstoffeinspritzventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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WO2016188577A1 (fr) 2016-12-01
EP3303817A1 (fr) 2018-04-11

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