WO2007098988A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

Info

Publication number
WO2007098988A1
WO2007098988A1 PCT/EP2007/050456 EP2007050456W WO2007098988A1 WO 2007098988 A1 WO2007098988 A1 WO 2007098988A1 EP 2007050456 W EP2007050456 W EP 2007050456W WO 2007098988 A1 WO2007098988 A1 WO 2007098988A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
fuel injection
corrugated spring
spring
injection valve
Prior art date
Application number
PCT/EP2007/050456
Other languages
German (de)
English (en)
Inventor
Uwe Bruetsch
Dietmar Uhlmann
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
Priority to AT07703953T priority Critical patent/ATE470066T1/de
Priority to DE502007004009T priority patent/DE502007004009D1/de
Priority to EP07703953A priority patent/EP1991774B1/fr
Publication of WO2007098988A1 publication Critical patent/WO2007098988A1/fr

Links

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
    • F02M63/0014—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/001—Control chambers formed by movable sleeves

Definitions

  • the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines. Specifically, the invention relates to an injector for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • a valve for controlling fluids is known.
  • a control chamber is provided, which is connected via an inlet throttle with a high-pressure region and an outlet throttle with a valve chamber.
  • the valve chamber is connected on the one hand via a bypass directly to the high pressure area and on the other hand to a low pressure area.
  • a valve pin can release or close the passage to the low-pressure region on a seat, wherein it also closes the bypass in the fully opened state.
  • the fuel injection valve according to the invention with the features of claim 1 has the advantage that the valve pin is at least substantially applied without transverse forces or with vanishing transverse forces in the direction of the starting position, so that wear on a sealing edge is reduced to the low pressure region. Damage to the seat, for example due to cavitation, can also be prevented or reduced.
  • the valve has a valve seat body which cooperates to close the connection between the valve chamber and the low-pressure region via the drain opening with a sealing cone of the valve pin to a sealing seat.
  • the sealing seat between the sealing cone and the valve seat body is formed on a sealing edge of the valve seat body, wherein the corrugated spring presses the sealing cone uniformly against the sealing edge.
  • the valve seat body is preferably part of a valve plate.
  • Fuel injection valve allows and the occurrence of cavitation is prevented at the seat to the low pressure area.
  • the corrugated spring has at least one slot-shaped recess extending in an axial direction.
  • the spring rate can be reduced in order to enable a soft configuration of the wave spring.
  • the recess allows a flow of fuel through, so that fuel (fuel), which flows through the bypass channel (bypass) in the valve chamber, can pass substantially unhindered into the valve chamber. It is particularly advantageous that a plurality of such recesses are provided, which are distributed uniformly over a circumference of the corrugated spring to prevent the occurrence of shear forces.
  • the corrugated spring can also have one or more groove-shaped recesses on one or both end faces, which allow the flow of fuel from the interior of the corrugated spring into the remaining valve space.
  • one or more groove-shaped recesses may also be provided a wave-shaped configuration of the front side, a serrated end face or the like.
  • the corrugated spring has a plurality of bulbous sections on which the corrugated spring is curved radially outward.
  • the bulbous sections allow a compression of the wave spring, wherein by the number and the configuration of the bulbous sections, a default of the spring rate is possible.
  • the corrugated spring may also have one or more straight portions at which a diameter of the corrugated spring changes, that is, which extend at least partially in the radial direction. These straight portions may also be radially oriented in the unloaded state and allow a further reduction of the spring rate in order to achieve a soft configuration of the wave spring. R. 311747
  • the corrugated spring can essentially be formed from a sleeve-shaped metal sheet having, for example, a sheet thickness of 0.1 mm, 0.15 mm or 0.2 mm.
  • Fig. 1 shows a first embodiment of an inventive
  • FIG. 2 shows the detail of the fuel injection valve of the first exemplary embodiment, designated by II in FIG. 1, in further detail;
  • FIG. 3 shows the section of a wave spring designated III in FIG. 2 according to a second exemplary embodiment of the invention
  • Fig. 4 shows a section through the wave spring shown in Fig. 2 along the section line designated IV and
  • Fig. 5 is a corrugated spring according to the side view shown in Fig. 2 according to a third embodiment of the invention.
  • Fig. 1 shows an embodiment of a fuel injection valve 1 of the invention in a partial, schematic sectional view.
  • the fuel injection valve 1 can be used in particular as an injector for R. 311747
  • Fuel injection systems of mixture compression, self-igniting internal combustion engines are used.
  • the fuel injection valve 1 is suitable for commercial vehicles or passenger cars.
  • a preferred use of the fuel injection valve 1 is for a fuel injection system with a common rail, the diesel fuel under high pressure 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 multi-part housing 2, which is connected to a nozzle body 3.
  • the nozzle body 3 is connected by means of a nozzle lock nut 5 with a holding body 26 of the housing 2.
  • a needle seat 4 is formed, which cooperates with a nozzle needle 6 to a sealing seat.
  • the nozzle needle 6 is formed so that it encloses a control chamber 9 at a side facing away from the sealing seat with a sleeve 7 and a throttle plate 8.
  • the fuel injection valve 1 is located in the control chamber 9 under a certain pressure standing fuel.
  • a fuel inlet port 12 is provided, which is connectable by means of a suitable fuel line with a common rail or the like, wherein the fuel inlet 12 is connected via a provided in the interior of the valve housing 2 fuel passage 13 with the fuel space 10.
  • the fuel chamber 10 and the fuel channel 13 are part of a high-pressure region 14, in which in the operation of the fuel injection valve 1 is provided under high pressure fuel.
  • the control chamber 9 is connected via an inlet throttle 15 to the fuel passage 13 of the high-pressure region 14. Furthermore, the control chamber 9 is connected via a discharge throttle 16 with a valve chamber 17 of a valve 18.
  • the valve 18 is preferably designed as a switching valve 18.
  • a bypass channel 19 is provided, via which the fuel chamber 10 of the high pressure region 14, bypassing the inlet throttle 15, the control chamber 9 and the outlet throttle 16 is directly connected to the valve chamber 17.
  • the bypass channel 19 is a bypass 19, which may be configured in particular as a bypass bore 19.
  • the valve 18 has a valve pin 24 with a pin portion 20 and a sealing cone 22, a corrugated spring 21 which surrounds the pin portion 20 circumferentially, and a valve seat body 23 which cooperates with the sealing cone 22 to a sealing seat.
  • the valve seat body 23 is formed on a valve plate 25.
  • the fuel injection valve 1 has a piezoelectric actuator 30 arranged in the interior of the housing 2, which is in operative connection with the valve pin 24 via a hydraulic coupler 31, which may be configured in particular as a stroke transmission device 31.
  • a piezoelectric actuator 30 arranged in the interior of the housing 2, which is in operative connection with the valve pin 24 via a hydraulic coupler 31, which may be configured in particular as a stroke transmission device 31.
  • the sealing seat formed between the sealing cone 22 and the valve seat body 23 of the valve plate 25 is opened, so that a pressure of the fuel in the control valve chamber 17 drops, whereby fuel flows from the control chamber 9 via the outlet throttle 16 in the valve chamber 17.
  • the pressure in the control chamber 9 is reduced, so that fuel is injected from the fuel chamber 10 via the injection hole 11.
  • Fuel injection valve 1 so that the injection process is terminated.
  • the valve 18 allows an advantageous specification of the course of the injection, even for short injection times.
  • Fig. 2 shows the designated in Fig. 1 with Il section of the fuel injection valve 1 in more detail.
  • the bolt portion 20 of the valve pin 24 is provided inside the valve space 17.
  • the sealing cone 22 of the valve pin 24 is partially provided within the valve chamber 17 and closes in the starting position shown in FIG. 2, a drain opening
  • valve 36 is connected. From the valve chamber 17 in the low pressure region 36 flowing fuel can be passed, for example via a return line in a tank of the internal combustion engine. In the initial position shown, a sealing seat is formed between the sealing cone 22 and a sealing edge 37 formed on the valve seat body 23 of the valve plate 25 in order to close the drain opening 35.
  • the sealing cone 22 of the valve pin 24 abuts against a cylindrical projection 38 on a connecting element 39 of the hydraulic coupler 31.
  • the wave spring 21 has bulbous portions 50, 51, 52, on which the wave spring 21 is curved radially outward.
  • the bulbous portions 50, 51, 52 allow a compression of the wave spring 21, wherein the spring rate by the configuration and the number of bulbous portions 50, 51, 52 can be predetermined within certain limits.
  • the corrugated spring 21 has in the initial position shown in FIG. 2, an installation height Hl, which is smaller than an initial height HO (FIG. 3), so that a bias voltage of the corrugated spring 21 is reached, by means of the corrugated spring 21, the valve pin 24 in the Direction 40 applied with a closing force.
  • this closing force is directed in the direction of an axis 53 of the valve 18, wherein the sealing edge 37 is configured radially symmetrically to the axis 53.
  • the sealing edge 37 is loaded by the sealing cone 22 only in the direction of the axis 53 and not with an additional transverse force.
  • a gap width 54 is chosen to be as small as possible in order to maximize the symmetrical position of the wave spring
  • Fig. 3 shows the designated in Fig. 2 with III section of a wave spring 21 according to a second embodiment of the invention.
  • the corrugated spring 21 is shown in a developed position in which the corrugated spring 21 is relieved.
  • the corrugated spring 21 has an initial height HO, which is defined as the distance between the end faces 44, 45.
  • the corrugated spring 21 is formed from a thin sheet having a wall thickness 55.
  • the wall thickness 55 may be 0.1 mm, 0.15 mm or 0.2 mm, for example.
  • the wave spring 21 has straight portions 56, 57, 58, 59 oriented perpendicular to the axial direction 40 so that the diameter of the wave spring 21 changes along each of the straight portions 56, 57, 58, 59.
  • the straight sections 56, 57, 58, 59 may also be partially oriented in the direction 40.
  • the spring rate of the wave spring 21 can be reduced. This applies correspondingly to the straight sections 57, 58, 59, wherein all the straight sections 56, 57, 58, 59 preferably have the same length 60. Between the straight sections 56, 57 is a bulbous section
  • the spring rate of the wave spring 21 can be specified.
  • Another way to specify the spring rate of the wave spring 21, consists in the choice of an inclination angle 64 by which the straight portion 59 is inclined relative to the direction 40. Through the selected in Fig. 3 inclination angle 64 of about 90 ° while a more soft design of the wave spring 21 is achieved.
  • An arcuate portion 65, over which the bulbous portion 51 extends, is preferably selected so that the straight portion 58 extends upward at the same angle in the direction 40 as the straight portion 59. It is advantageous to have the most uniform possible configuration Wave spring 21, so that even with corrugated springs 21 with more than two bulbous sections 50,
  • the spring rate of the corrugated spring 21 can therefore be specified within a wide range, with boundary conditions such as the available valve chamber 17 can be considered.
  • the biasing force of the wave spring 21 is determined by the difference between the output length HO and the installation length Hl.
  • the corrugated spring 21 can be additionally set to at least reduce a decrease in the biasing force over the life of the fuel injection valve 1.
  • the setting of the corrugated spring 21 can be done, for example, by applying the corrugated spring 21 with 1.3 to 1.5 times the biasing force.
  • a diameter 67 of the wave spring 21 is preferably only slightly larger than a diameter 68 (FIG. 2) of FIG R. 311747
  • Bolt portion 20 of the valve pin 24 is selected to minimize the gap width 54 between the corrugated spring 21 and the bolt portion 20 of the valve pin 24.
  • Fig. 4 shows a section through the corrugated spring 21 along the section line indicated in Fig. 2 with IV.
  • the corrugated spring 21 has groove-shaped recesses 42, 42 A, 42 B, 42 C, which are distributed uniformly over a circumference of the corrugated spring 21.
  • a length 69 and a height 70 (FIG. 2) of the groove-shaped recess 42 and correspondingly of the recesses 42 A, 42 B, 42 C are selected so that the required for the functioning of the valve 18 flow of fuel from the interior 46 in the remaining part of the valve chamber 17 is possible.
  • Fig. 5 shows a corrugated spring 21 in a side view corresponding to the view shown in Fig. 2, according to a third embodiment of the invention.
  • the corrugated spring 21 has in this embodiment, four bulbous portions 49, 50, 51, 52.
  • the wave spring 21 In the region of the end face 44, the wave spring 21 has an annular portion 75 and in the region of the end face 45, the wave spring 21 has an annular portion 76.
  • slot-shaped recesses 77, 78, 79 are formed, which extend in the installed state of the wave spring in the direction of the axis 53.
  • the slot-shaped recesses each have the height 80 and a width corresponding to the width 81 of the slot-shaped recess 78.
  • a total of six slot-shaped recesses 77, 78, 79 are provided, of which only the slot-shaped recesses 77, 78, 79 are designated.
  • the further slot-shaped recesses lie behind the slot-shaped recesses 77, 78, 79, so that a symmetrical arrangement of the slot-shaped recesses 77, 78, 79 with respect to the axis 53 results.
  • the spring rate of the wave spring 21 can be reduced.
  • the slot-shaped recesses 77, 78, 79 allow fuel flow from the interior 46 into the remaining valve space 17 (FIG. 2), so that the groove-shaped recesses 42, 42A, 42B shown in FIGS. 2, 3 and 4, 42C and 43 can be omitted.
  • the corrugated spring 21 may also be designed wave-shaped or sawtooth-shaped.
  • a seamlessly drawn tube segment made of a steel sheet or the like, which has the required initial height HO and a wall thickness 55, can be introduced into a radially symmetrical tool with a wavy contour.
  • a deformation of the corrugated spring 21 can be achieved, in which the predetermined by the tool contour is adopted.
  • the recesses 42, 43, 77, 78, 79 can be introduced after the shaping by means of laser processing.
  • the end faces 44, 45 of the corrugated spring 21 can, if necessary because of the flatness requirements, be reground.

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'invention concerne une soupape d'injection de carburant (1) servant en particulier d'injecteur dans des systèmes d'injection de carburant de moteurs à combustion interne à autoallumage par compression, lequel injecteur comprend un actionneur (30) qui régule la pression régnant dans une chambre de commande (9) par l'intermédiaire d'un dispositif de multiplication de course (31) et d'une soupape (18). Cette soupape (18) présente une goupille (24) et un ressort ondulé (21) qui entoure une section (20) de la goupille de soupape (24). Une arête d'étanchéité (37) d'un corps de siège de soupape (23), formant un siège d'étanchéité avec un cône d'étanchéité (22) de la goupille de soupape (24), est sollicitée de façon régulière par le ressort ondulé (21), ce qui permet d'éviter une détérioration de l'arête d'étanchéité (37).
PCT/EP2007/050456 2006-02-28 2007-01-17 Soupape d'injection de carburant WO2007098988A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07703953T ATE470066T1 (de) 2006-02-28 2007-01-17 Brennstoffeinspritzventil
DE502007004009T DE502007004009D1 (de) 2006-02-28 2007-01-17 Brennstoffeinspritzventil
EP07703953A EP1991774B1 (fr) 2006-02-28 2007-01-17 Soupape d'injection de carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006009070.5 2006-02-28
DE102006009070A DE102006009070A1 (de) 2006-02-28 2006-02-28 Brennstoffeinspritzventil

Publications (1)

Publication Number Publication Date
WO2007098988A1 true WO2007098988A1 (fr) 2007-09-07

Family

ID=37903572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/050456 WO2007098988A1 (fr) 2006-02-28 2007-01-17 Soupape d'injection de carburant

Country Status (4)

Country Link
EP (1) EP1991774B1 (fr)
AT (1) ATE470066T1 (fr)
DE (2) DE102006009070A1 (fr)
WO (1) WO2007098988A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085604A1 (fr) * 2008-02-04 2009-08-05 Robert Bosch GmbH Injecteur de carburant
CH700396A1 (de) * 2009-02-09 2010-08-13 Ganser Hydromag Brennstoffeinspritzventil für Verbrennungskraftmaschinen.
DE102009027504A1 (de) * 2009-07-07 2011-01-20 Robert Bosch Gmbh Kraftstoffinjektor für eine Brennkraftmaschine
DE102009027494A1 (de) * 2009-07-07 2011-01-13 Robert Bosch Gmbh Kraftstoff-Injektor mit druckausgeglichenem Steuerventil
CN106593723A (zh) * 2017-01-18 2017-04-26 哈尔滨工程大学 双路进油旁通式电控喷油器
CN106762280A (zh) * 2017-01-18 2017-05-31 哈尔滨工程大学 一种带有刻沟的旁通式电控喷油器
CN106762281B (zh) * 2017-01-18 2023-03-21 哈尔滨工程大学 一种带液力反馈的电控喷油器
CN106762282A (zh) * 2017-01-18 2017-05-31 哈尔滨工程大学 旁通式电控喷油器
EP3667057B1 (fr) * 2018-12-13 2022-08-31 Vitesco Technologies GmbH Injecteur de fluide avec un élément de ressort bistable
FR3096415A1 (fr) * 2019-05-23 2020-11-27 Delphi Technologies Ip Limited Vanne pour injecteur d’un moteur de véhicule automobile
CN112943499B (zh) * 2021-02-25 2022-05-03 山东菏泽华星油泵油嘴有限公司 一种喷油嘴的新型喷孔机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154152A2 (fr) * 2000-05-12 2001-11-14 Robert Bosch Gmbh soupape d'injection de carburant pour moteurs a combustion interne.
DE10145862A1 (de) 2001-09-18 2003-04-03 Bosch Gmbh Robert Verfahren zum Einspritzen von Kraftstoff sowie Ventil zum Steuern von Flüssigkeiten
WO2004104403A1 (fr) * 2003-05-20 2004-12-02 Robert Bosch Gmbh Soupape permettant de commander le passage de liquides
WO2006012658A1 (fr) * 2004-08-06 2006-02-09 Robert Bosch Gmbh Dispositif permettant l'injection de carburant dans la chambre de combustion d'un moteur a combustion interne
EP1650427A1 (fr) * 2004-10-23 2006-04-26 Robert Bosch Gmbh Soupape d'injection de carburant pour des moteurs à combustion interne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154152A2 (fr) * 2000-05-12 2001-11-14 Robert Bosch Gmbh soupape d'injection de carburant pour moteurs a combustion interne.
DE10145862A1 (de) 2001-09-18 2003-04-03 Bosch Gmbh Robert Verfahren zum Einspritzen von Kraftstoff sowie Ventil zum Steuern von Flüssigkeiten
WO2004104403A1 (fr) * 2003-05-20 2004-12-02 Robert Bosch Gmbh Soupape permettant de commander le passage de liquides
WO2006012658A1 (fr) * 2004-08-06 2006-02-09 Robert Bosch Gmbh Dispositif permettant l'injection de carburant dans la chambre de combustion d'un moteur a combustion interne
EP1650427A1 (fr) * 2004-10-23 2006-04-26 Robert Bosch Gmbh Soupape d'injection de carburant pour des moteurs à combustion interne

Also Published As

Publication number Publication date
EP1991774A1 (fr) 2008-11-19
EP1991774B1 (fr) 2010-06-02
DE502007004009D1 (de) 2010-07-15
DE102006009070A1 (de) 2007-08-30
ATE470066T1 (de) 2010-06-15

Similar Documents

Publication Publication Date Title
EP1991774B1 (fr) Soupape d'injection de carburant
EP1776523B1 (fr) Systeme d'injection de carburant
WO2008138800A1 (fr) Injecteur à actionneur piézoélectrique
EP1910663B1 (fr) Systeme d'injection de carburant pour moteur a combustion interne a injection directe de carburant
EP2310662B1 (fr) Injecteur de carburant
EP2206912A2 (fr) Injecteur de carburant
EP1770275A1 (fr) Injecteur à trous avec un volume de retenue pour un dispositif d'injection de carburant
EP2743493A2 (fr) Injecteur de carburant
WO2007098985A1 (fr) Soupape d'injection de carburant
DE102018201279B4 (de) Hochdruckanschluss für eine Kraftstoffhochdruckpumpe eines Kraftstoffeinspritzsystems sowie Kraftstoffhochdruckpumpe
WO2005040598A1 (fr) Soupape pour commander une liaison dans un systeme de liquide haute pression, notamment un dispositif d'injection de carburant pour un moteur a combustion interne
WO2008122521A1 (fr) Soupape et système d'injection pour un moteur à combustion interne comprenant une soupape
EP2630361B1 (fr) Injecteur de carburant
EP1504187B1 (fr) Injecteur d'injection de carburant
WO2000042316A1 (fr) Soupape d'injection de carburant
EP2394048B1 (fr) Ensemble d'injection pour un injecteur
EP2957760B1 (fr) Ensemble de buses pour un injecteur de carburant et injecteur de carburant
DE10160490B4 (de) Kraftstoff-Einspritzvorrichtung, Kraftstoffsystem sowie Brennkraftmaschine
DE102009045556A1 (de) Injektor
DE102018202807A1 (de) Ventilanordnung zur Gasdruckregelung, Kraftstoffsystem mit Ventilanordnung zur Gasdruckregelung
EP2267295A2 (fr) Injecteur de carburant
WO2007098986A1 (fr) Soupape d'injection de carburant
WO2007054828A2 (fr) Injecteur a refroidissement ameliore
DE10158588C1 (de) Kraftstoff-Einspritzvorrichtung, Kraftstoffsystem sowie Brennkraftmaschine
EP1654454B1 (fr) Dispositif d'injection de carburant pour moteur a combustion interne

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2007703953

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application