EP2494182B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

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Publication number
EP2494182B1
EP2494182B1 EP10759858.3A EP10759858A EP2494182B1 EP 2494182 B1 EP2494182 B1 EP 2494182B1 EP 10759858 A EP10759858 A EP 10759858A EP 2494182 B1 EP2494182 B1 EP 2494182B1
Authority
EP
European Patent Office
Prior art keywords
valve
injection device
fuel injection
pressure
combustion chamber
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
EP10759858.3A
Other languages
German (de)
English (en)
Other versions
EP2494182A1 (fr
Inventor
Michael Kurz
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 EP2494182A1 publication Critical patent/EP2494182A1/fr
Application granted granted Critical
Publication of EP2494182B1 publication Critical patent/EP2494182B1/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
    • 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
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • 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
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0073—Pressure balanced valves
    • 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
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • 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

Definitions

  • the invention relates to a fuel injection device for injecting fuel into a combustion chamber of an internal combustion engine, comprising a control valve which comprises a valve piece, in which a valve body for the representation of a valve seat is guided to and fro.
  • the object of the invention is to minimize the leakage during operation of a fuel injection device according to the preamble of claim 1.
  • a fuel injection device for injecting fuel into a combustion chamber of an internal combustion engine with a control valve comprising a valve piece in which a valve body for showing a valve seat is guided to and fro, achieved by the valve body at one end having combustion chamber remote first contact surface, which is arranged with closed valve seat in a plane with a second, formed on the valve member, contact surface so that the two contact surfaces sealing abut against a common counter surface.
  • the inventive arrangement of the two contact surfaces an additional seal is created with the valve seat closed, whereby the leakage during operation of the fuel injection device, especially at high injection pressures, can be significantly reduced. Thereby, the quantity balance of the fuel injection device can be improved.
  • the valve seat includes a sealing edge or sealing surface on the valve body sealingly abutting a seal surface or sealing edge of the valve member when the valve seat is closed to interrupt fluid communication between a control chamber and a pressure relief space or return.
  • the opening movement of the valve body can be initiated by an actuator of a solenoid valve or by a piezoelectric actuator.
  • the closing movement of the valve body is preferably effected by a spring, through which the valve body is biased in its closed position.
  • the two contact surfaces are designed as annular surfaces. The two annular surfaces preferably extend in the common plane perpendicular to a longitudinal axis of the fuel injection device. The valve body is reciprocable in the longitudinal direction.
  • a preferred embodiment of the fuel injection device is characterized in that the two contact surfaces are provided at a combustion chamber distal end of the valve piece and the valve body.
  • the mating surface is provided for example on a stop plate or a stop body or on an actuator.
  • the mating surface is preferably also designed as an annular surface.
  • a further preferred embodiment of the fuel injection device is characterized in that the valve body is designed to be pressure balanced.
  • Pressure balanced design means that the valve body with the valve seat closed in equal parts in the opening direction and closing direction with a control chamber pressure, in particular high pressure, is applied.
  • valve body is designed as a valve sleeve, which is biased with the first bearing surface against an armature and comes with its combustion chamber near the end with the valve seat to the valve piece to rest.
  • the armature on which preferably the counter surface is provided, cooperates with a magnet, preferably an electromagnet, to open the control valve.
  • a further preferred embodiment of the fuel injection device is characterized in that the combustion chamber remote end of the valve sleeve is designed to be closed and has a connection through hole which connects an outflow space in the valve sleeve with an armature space.
  • the combustion chamber near the end of the armature is, viewed in longitudinal section, preferably U-shaped.
  • the armature is preferably disposed in a pressure relief space communicating with a return.
  • Another preferred embodiment of the fuel injection device is characterized in that the armature space is connected via at least one relief through-hole with a return. Through the connection with the return ensures that the armature space with closed valve seat with a return pressure, preferably low pressure, is applied.
  • a further preferred embodiment of the fuel injection device is characterized in that the valve body is designed as a valve pin, which is biased with the first contact surface against a stop body or a stop plate and radially within the first contact surface has a Betjans foundedwirk Structure.
  • the actuating pressure acting surface is preferably acted upon by a coupler space pressure of a hydraulic coupler which is delimited by an actuator module of a piezoelectric actuator device. Via the hydraulic coupler, a longitudinal movement of the actuator module, which is brought about by an expansion of the piezoelectric actuator device, is transmitted to the valve body in an amplified manner.
  • valve pin for the representation of the valve seat has a collar which is movable away from the valve piece for opening the valve seat.
  • the opening movement of the valve body caused by the piezoactuator device preferably takes place against the biasing force of a valve spring toward the combustion chamber.
  • the collar limits an annular space acted upon by a control chamber pressure, in particular at high pressure, whose end remote from the combustion chamber is delimited by an annular surface of a pressure shoulder which is formed on the valve body.
  • a fuel injector 1 also referred to as a fuel injector or fuel injector, is shown in longitudinal section.
  • the fuel injection device 1 comprises a holding body 2, a stopper plate or a stopper body 3, a valve piece 4, a throttle plate or throttle disk 5, and a nozzle body 6 abutting each other in this order.
  • the components are pressed against each other by a clamping nut 8, which is supported on a shoulder of the nozzle body 6 and is screwed by a thread 9 with the holding body 2.
  • a nozzle needle 10 is guided in a central through hole 11 of the nozzle body 6 movable back and forth.
  • a combustion chamber near the end of the nozzle needle 10 is arranged in a pressure chamber 12.
  • the nozzle needle 10 is through a nozzle spring 13 so biased that a nozzle needle seat 14 is closed at a combustion chamber near the end of the nozzle needle 10.
  • the nozzle needle seat 14 comprises a sealing edge formed on the nozzle needle 10 which bears against a conical sealing surface which is formed at the end of the nozzle body 6 remote from the combustion chamber and from which two injection holes 15, 16 emerge which connect the pressure chamber 12 to a combustion chamber 18 of an internal combustion engine.
  • the pressure chamber 12 communicates via a high-pressure connection channel 19 with a further pressure chamber 22, which in turn communicates via a high-pressure connection channel 23 and a high-pressure line 24 with a central high-pressure fuel storage 25, which is also referred to as a common rail and is disposed outside of the fuel injection device 1.
  • the two pressure chambers 12, 22 in the interior of the fuel injection device 1 are filled from the central high-pressure fuel storage 25 with fuel, which is acted upon by high pressure.
  • the nozzle needle seat 14 is opened at the end of the nozzle needle 10 close to the combustion chamber, so that high-pressure fuel is injected from the pressure chamber 12 via the injection holes 15, 16 into the combustion chamber 18.
  • the opening movement of the nozzle needle 10 is controlled by the pressure in a control chamber 28 which is limited in a nozzle needle sleeve 27 from the combustion chamber remote end 26 of the nozzle needle 10.
  • the control chamber 28 which is also referred to as Düsennadel horrraum, is connected via an inlet channel 30 which is provided with an inlet throttle, with the high-pressure connection channel 23 in connection.
  • an outlet throttle 32 is arranged
  • the control chamber 28 communicates with a drainage chamber 33, which in turn communicates via a further drainage channel 34 with a valve chamber 35 of a control valve 36.
  • the inlet channel 30 and the outlet channel 31 extend through the throttle plate 5.
  • the outlet chamber 33 and the outlet channel 34 are formed in the valve piece 4.
  • the control valve 36 comprises a valve body 37, which has a collar 38.
  • the collar 38 includes a sealing edge or sealing surface, which in the illustrated closed state of the control valve 36 at a sealing surface or sealing edge in Appendix, which is formed on the valve piece 4.
  • the collar 38 serves to represent a valve seat 39 which is in the in FIG. 1 shown state is closed.
  • the valve body 37 has at its end near the combustion chamber on a stop pin which projects into a spring chamber 40 in which a valve spring 41 is biased against the collar 38 of the valve body 37, that the valve seat 39 remains closed.
  • the spring chamber 40 communicates via pressure relief channels 42, 43, 44 with a pressure relief chamber 45 at the combustion chamber remote end of the fuel injection device 1 in connection.
  • the pressure relief space 45 is connected via a return line 46, in which a return throttle 47 is arranged, with a return tank 48 in connection.
  • the return tank 48 is as well as the pressure relief chamber 45 and the pressure relief channels 42, 43, 44 applied with a return pressure or low pressure, which is significantly smaller than the high pressure in the central high-pressure fuel storage 25 and the pressure chambers 12, 22 inside the fuel injection device 1.
  • annular space 50 is formed, which communicates via a pressure relief passage 49 with the pressure relief space 45 in connection.
  • a relief groove 51 extends into the valve piece 4.
  • the relief groove 51 extends around a guide portion 52 in which the valve body 37 is reciprocally movable.
  • the valve body 37 is designed as a valve pin 54, which is guided in a through hole of the valve piece 4 to and fro. By the guidance of the valve pin 54 in the valve piece 4, a leakage path 55 is created, passes through the leakage from the valve chamber 35 of the control valve 36 in the annulus 50, which communicates with the return.
  • the guide diameter of the valve body 37 and the valve pin 54 is designated 56.
  • a high-pressure pocket 58 is provided in the valve piece 4, which serves to compensate for changes in length of the valve pin 54 by rail pressure changes in the region of a length 59 to the same extent on the valve piece 4.
  • a high-pressure-loaded surface 67 on the valve piece 4 must therefore be approximately equal to a high pressure-loaded surface 68 on the valve pin 54.
  • the high-pressure bag 58 is arranged so that they no Influence on the function of the control valve 36 has.
  • the high-pressure pocket 58 does not overlap with the valve chamber 35 both in the closed and in the open state of the valve seat 39.
  • the spatial separation over the guide diameter 56 when opening the control valve 36 a faster degradation of the pressure in the valve chamber 35 and thus a faster pressure reduction in Control room 28 allows. In turn, a faster opening of the nozzle needle 10 can be achieved.
  • the combustion chamber remote end of the valve body 37 and the valve pin 54 defines an actuating pressure chamber 60 which communicates via a through hole of the stopper plate 3 with a coupler 61 in communication, which is filled with a hydraulic medium.
  • the coupler space 61 is delimited by an actuator body 63, which is also referred to as an actuator module.
  • the actuator body 63 is biased by an actuator spring 65 away from the stopper plate 3 against a piezoelectric actuator 64.
  • the piezoelectric actuator device 64 When the piezoelectric actuator device 64 is energized, then it expands, whereby the actuator body 63 is moved toward the stop plate 3.
  • the pressure in the coupler chamber 61 and the actuating pressure chamber 60 increases at the combustion chamber remote end of the valve body 37 and the valve pin 54.
  • the pressure increase in the actuating pressure chamber 60 causes the valve body 37 is moved against the biasing force of the valve spring 41 to the combustion chamber 18, so that the valve seat 39 is opened.
  • the length 59 between the valve seat 39 and the end remote from the combustion chamber of the valve piece 4 and the valve body 37 before and after assembly is identical.
  • a first abutment surface 71 on the valve body 37 or valve pin 54 is formed radially outside the actuating pressure chamber 60.
  • a second abutment surface 72 is formed radially within the annulus 50 on the valve piece 4.
  • the two contact surfaces 71, 72 are arranged according to an essential aspect of the invention in a common plane. This arrangement of the two contact surfaces 71, 72 is preferably achieved in that the valve body 37 is inserted into the valve piece 4, and the valve seat 39, for example, by the biasing force of the valve spring 41, is closed.
  • both contact surfaces 71, 72 are jointly ground flat.
  • FIG. 2 it can be further seen that the two contact surfaces 71, 72 of the valve body 37 and the valve member 4 with the valve seat 39 closed are in close contact with a counter surface 73, which is formed on the stop plate 3.
  • the two contact surfaces 71, 72 are formed as well as the counter surface 73 as annular surfaces. In order to prevent an undesirable buildup of pressure by sweat leakage through the sealing bandage 71, 72, 73 in the acted upon with low pressure annulus 50, this is connected via the pressure relief channel 49 to the pressure relief chamber 45.
  • the piezoelectric actuator device 64 is energized so that it assumes its longest state.
  • the change in length of the piezoelectric actuator 64 leads via the actuator body 63 to an increase in pressure in the coupler space 61.
  • the sealing compound 71, 72, 73 is repealed.
  • the leakage path 55 is opened.
  • the pressure in the high-pressure pocket 58 builds up slowly over the leakage path 55 and over the valve space 35.
  • the actuator body 63 is returned by the actuator spring 65, so that the pressure in the coupler chamber 61 and in the actuating pressure chamber 60 drops.
  • the valve pin 54 is pulled towards the stop plate 3, whereby the valve seat 39 is closed.
  • the pressure in the valve chamber 35 and with a time delay also rises in the high-pressure pocket 58 to the rail pressure level, so that differences in length between the valve body 37 and the valve piece 4 due to rail pressure are compensated.
  • a fuel injection device 81 is shown in longitudinal section, the fuel injection device 1 in FIG. 1 similar.
  • the fuel injector 81 includes a valve piece 84 that projects into a pressure relief space 85 that communicates with the pressure relief space 45 in FIG. 1 equivalent.
  • the valve piece 84 is fixed in a housing of the fuel injection device 81 by means of a valve clamping nut 86.
  • the valve piece 84 limits the combustion chamber side, a control chamber 88 which is limited to the combustion chamber through the combustion chamber remote end of a nozzle needle 90.
  • the control chamber 88 corresponds to the control room 28 in FIG FIG. 1 ,
  • the control chamber 88 communicates with a valve chamber 93 of a control valve 94 via a drain passage 91, in which an outlet throttle 92 is arranged.
  • the control valve 94 comprises a valve seat 95, which in FIG. 3 closed and in FIG. 4 is shown open.
  • the valve seat 95 is defined by a sealing edge or sealing surface formed on a valve body 98, which comes to bear on a sealing surface or sealing edge of the valve piece 84 when the valve seat 95 is closed.
  • the valve body 98 is designed as a valve sleeve whose interior 96 constitutes a drainage space. In the interior or drain space 96 of the valve body 98, a valve spring 97 is arranged, through which the valve body 98 is biased away from the combustion chamber.
  • the valve body 98 is guided with a guide diameter 99 in the valve piece 84 movable back and forth.
  • the interior or drain space 96 of the valve body 98 communicates via a connection through-hole 100 with an armature space 102, which is bounded by a sleeve-like end of an armature 104.
  • the armature 104 is actuated by an electromagnet 105, which can be energized via electrical connection lines 106, 107.
  • the armature 104 is biased by an armature spring 108 against the valve member 84 and the valve body 98.
  • the combustion chamber near the end of the armature 104 is guided with an armature guide diameter 110 in a sleeve-like end of the valve member 84 movable back and forth.
  • relief through holes 111, 112 are provided, which connect the armature space 102 with the pressure relief space 85.
  • FIG. 5 it can be seen that the armature space 102 is bounded radially on the outside by a first contact surface 121, which is formed on the valve body 98.
  • a second contact surface 122 which is formed on the valve piece 84, slightly spaced from the first bearing surface 121.
  • symbols 124 is in FIG. 5 indicated that the two contact surfaces 121, 122, which are both designed as annular surfaces, are machined together, in particular by grinding, processed. The processing takes place with the valve seat 95 closed.
  • FIG. 6 the machined state of the two contact surfaces 121, 122 is shown.
  • the two contact surfaces 121, 122 together bear against a mating surface 123, which is likewise designed as an annular surface on the armature 104.
  • the mating surface 123 is located with the two contact surfaces 121, 122 in a common plane 125.
  • the solenoid 105 is energized via the electrical connections 106, 107. As a result, a magnetic force is generated which is greater than the spring force of the armature spring 108 and acts counter to this. By the magnetic force of the electromagnet 105, the armature 104 is attracted. The movement of the armature 104 allows movement of the valve body 98 upwards, that is to the electromagnet 105 back. This movement of the valve body 98 is assisted by the valve spring 97 and causes the valve seat 95 to open, which ideally has a sealing edge with a sealing diameter which corresponds to the guide diameter 99 of the valve body 98.
  • the size of the mating surface 123 designed as an annular surface must be made as small as possible. However, a sufficient overlap of the contact surfaces 121, 122 with the counter surface 123 must be ensured so that the sealing effect is not impaired.

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)

Claims (8)

  1. Dispositif d'injection de carburant, destiné à injecter du carburant dans une chambre de combustion (18) d'un moteur à combustion interne, comprenant une soupape de commande (36 ; 94) munie d'une pièce de soupape (4 ; 84) dans laquelle un corps de soupape (37 : 8) est guidé suivant un mouvement alternatif pour représenter un siège de soupape (39 ; 95), le corps de soupape (37 ; 98) comportant, à une extrémité éloignée de la chambre de combustion, une première surface d'appui (71, 121),
    caractérisé en ce que
    la première surface d'appui (71 ; 121) étant disposée, lorsque le siège de soupape (39 ; 95) est fermé, dans un plan (125) comportant une deuxième surface d'appui (72 ; 122) formée au niveau de la pièce de soupape (4 ; 84) de telle sorte que les deux surfaces d'appui (71, 72 ; 121,122) viennent en appui de manière étanche contre une surface homologue commune (73 ; 123), les deux surfaces d'appui (71, 72 ; 121,122) étant conçues comme des surfaces annulaires.
  2. Dispositif d'injection de carburant selon l'une des revendications précédentes, caractérisé en ce que les deux surfaces d'appui (71, 72 ; 121, 122) sont prévues à une extrémité, éloignée de la chambre de combustion, de la pièce de soupape (4 ; 84) et du corps de soupape (37 ; 98).
  3. Dispositif d'injection de carburant selon l'une des revendications précédentes, caractérisé en ce que le corps de soupape (37 ; 98) est conçu pour être équilibré en pression.
  4. Dispositif d'injection de carburant selon l'une des revendications précédentes, caractérisé en ce que le corps de soupape (98) est réalisé sous la forme d'un manchon de soupape qui est précontraint contre un induit (104) avec la première surface d'appui (121) et qui vient en appui sur la pièce de soupape (84) avec son extrémité proche de la chambre de combustion lorsque le siège de soupape (95) est fermée.
  5. Dispositif d'injection de carburant selon la revendication 4, caractérisé en ce que l'extrémité, éloignée de la chambre à combustion, du manchon de soupape (98) est conçue pour être fermée et comporte un trou traversant de liaison (100) qui relie une chambre d'évacuation (96) ménagée dans le manchon de soupape à une chambre d'induit (102).
  6. Dispositif d'injection de carburant selon la revendication 5, caractérisé en ce que l'espace d'induit (102) est relié à un retour par le biais d'au moins un trou traversant de décharge (111, 112).
  7. Dispositif d'injection de carburant selon l'une des revendications 1 à 3, caractérisé en ce que le corps de soupape (37) est conçu sous la forme d'une tige de soupape (54) qui est précontrainte contre un corps de butée (3) avec la première surface d'appui (71) et qui possède, radialement à l'intérieur de la première surface d'appui (71), une surface active de pression d'actionnement.
  8. Dispositif d'injection de carburant selon la revendication 7, caractérisé en ce que la tige de soupape (54) comporte, pour représenter le siège de soupape (39), une collerette (38) qui peut être écartée de la pièce de soupape (4) pour ouvrir le siège de soupape.
EP10759858.3A 2009-10-26 2010-09-23 Dispositif d'injection de carburant Not-in-force EP2494182B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045995A DE102009045995A1 (de) 2009-10-26 2009-10-26 Kraftstoffeinspritzvorrichtung
PCT/EP2010/064068 WO2011051060A1 (fr) 2009-10-26 2010-09-23 Dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2494182A1 EP2494182A1 (fr) 2012-09-05
EP2494182B1 true EP2494182B1 (fr) 2018-11-21

Family

ID=43125604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10759858.3A Not-in-force EP2494182B1 (fr) 2009-10-26 2010-09-23 Dispositif d'injection de carburant

Country Status (5)

Country Link
EP (1) EP2494182B1 (fr)
CN (1) CN102597484A (fr)
DE (1) DE102009045995A1 (fr)
IN (1) IN2012DN02065A (fr)
WO (1) WO2011051060A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2791495B1 (fr) 2011-10-01 2016-08-24 Robert Bosch GmbH Soupape d'injection résistant à la cavitation
DE102014205517A1 (de) * 2014-03-25 2015-10-01 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102014206210A1 (de) * 2014-04-01 2015-10-01 Robert Bosch Gmbh Kraftstoffinjektor
GB2547684A (en) * 2016-02-26 2017-08-30 Delphi Int Operations Luxembourg Sarl Fuel injector for a combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10023960A1 (de) * 2000-05-16 2001-11-22 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine
DE10250720A1 (de) * 2002-10-31 2004-05-13 Robert Bosch Gmbh Einspritzventil
US7243902B2 (en) * 2002-11-08 2007-07-17 Robert Bosch Gmbh Pressure-compensated, directly controlled valve
DE102006021741A1 (de) 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102006049050A1 (de) * 2006-10-18 2008-04-30 Robert Bosch Gmbh Injektor zum Einspritzen von Kraftstoff
DE102007042466B3 (de) * 2007-09-06 2009-04-09 Continental Automotive Gmbh Einspritzsystem mit reduzierter Schaltleckage und Verfahren zum Herstellen eines Einspritzsystems

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
IN2012DN02065A (fr) 2015-08-21
WO2011051060A1 (fr) 2011-05-05
CN102597484A (zh) 2012-07-18
DE102009045995A1 (de) 2011-06-09
EP2494182A1 (fr) 2012-09-05

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