[go: up one dir, main page]

EP1989436B1 - Dispositif d'injection de carburant pour moteur a combustion interne - Google Patents

Dispositif d'injection de carburant pour moteur a combustion interne Download PDF

Info

Publication number
EP1989436B1
EP1989436B1 EP07712013A EP07712013A EP1989436B1 EP 1989436 B1 EP1989436 B1 EP 1989436B1 EP 07712013 A EP07712013 A EP 07712013A EP 07712013 A EP07712013 A EP 07712013A EP 1989436 B1 EP1989436 B1 EP 1989436B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection device
guide
guide element
valve element
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
EP07712013A
Other languages
German (de)
English (en)
Other versions
EP1989436A1 (fr
Inventor
Wolfgang Braun
Dirk Vahle
Martin Katz
Alexander Wernau
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 EP1989436A1 publication Critical patent/EP1989436A1/fr
Application granted granted Critical
Publication of EP1989436B1 publication Critical patent/EP1989436B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M61/04—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
    • 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
    • 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 device for an internal combustion engine according to the preamble of claim 1, such as in the document EP 1624181 shown.
  • a fuel injection device with which the fuel can be injected directly into its associated combustion chamber of an internal combustion engine.
  • a valve element is arranged in a housing, which in the region of a fuel outlet opening has a total acting in the opening direction of the valve element pressure surface.
  • a control surface acting in the closing direction is present, which delimits a control chamber.
  • the control surface acting in the closing direction is larger than the pressure surface acting in the opening direction when the valve element is open.
  • a high fuel pressure is present at a region of the pressure surface acting in the opening direction and at the control surface acting in the closing direction, as is provided, for example, by a fuel rail.
  • the pressure applied to the control surface is lowered until the hydraulic force resultant in the opening direction on the pressure surface exceeds the force acting in the closing direction. As a result, opening of the valve element is effected.
  • this fuel injection device Prerequisite for the operation of this fuel injection device is a seal between that area in which the comparatively small acting in the opening direction Pressure surface is present, and that portion of the valve element in which the comparatively large acting in the closing direction control surface is present. Leakage fluid is discharged in the known fuel injection device from the region of the seal via a leakage line.
  • Object of the present invention is to develop a fuel injection device of the type mentioned so that it is as simple and inexpensive builds and can be used at a very high operating pressure.
  • the Kraftstoff-Einspritzvomichtung should work safely even in the presence of manufacturing tolerances.
  • the freedom of design of the fuel injection device is significantly increased by the hydraulic coupling of two separate parts of the valve element, because it can be optimally adapted to the respective location within the fuel injection device, the respective parts of the valve element.
  • the elastic properties of the valve element can be optimally adapted to the intended area of use by an appropriate choice of the material used and the dimensions.
  • the manufacture of the valve element as a whole is considerably simplified since parts with a constant diameter are also used. This allows a structure of the fuel injection device with simple parts, which on the one hand facilitates the production and on the other hand allows a small construction.
  • numerous components of previous devices can continue to be used for realizing the present invention.
  • hydraulic coupler Another advantage of the hydraulic coupler is the compensation of tolerances, which simplifies the manufacture and assembly.
  • the coupling of two parts of the valve element by means of a hydraulic coupler also allows the realization of a certain motion damping.
  • the hydraulic coupler can be easily realized, and work required on the housing side is simplified.
  • the guide element separate from the housing according to the invention, a misalignment of the sleeve relative to a housing-side sealing surface cooperating therewith is furthermore minimized. This comes into play particularly when the first part of the valve element is particularly long, and when the sleeve is guided particularly narrow on the first part of the valve element. Leaks in the coupling space are minimized through or even completely prevented. An elaborate and costly Einmessrata can therefore be omitted. A wear-related change in the functional properties of the fuel injection device according to the invention is reduced. By the leadership by means of the guide element manufacturing tolerances are compensated, which ensures a secure injector function.
  • the fuel injection device is particularly simple in construction when the sleeve is supported on the guide element.
  • a sealing surface on the guide element, on which the sleeve is supported are formed exactly at right angles to the guide axis of the guide element, so that a slanted position of the sleeve guided on the first part relative to the sealing surface on the guide element is particularly clearly minimized.
  • the guide element comprises a stroke stop for the second part of the valve element.
  • This is particularly advantageous in those fuel injection devices with which comparatively large amounts of fuel are to be injected, for example in commercial vehicles.
  • a fuel injection device could be due to their multi-part design by manufacturing tolerances in the length dimensions to strong stroke tolerances. So far, these have been reduced by the calibration of a setting. It had to be measured prior to assembly of the individual parts of the fuel injector each relevant installation dimension with an influence on the stroke tolerance. From these measured values, the correct stroke value could be set via a selection group of setting elements.
  • the production of the fuel injection device is further simplified when the guide element comprises a passage opening, preferably with a flow restrictor, which connects a pressure chamber in the region of the valve seat with a high-pressure chamber.
  • the guide element between two housing bodies of the fuel injection device may be jammed, with its contact surfaces are designed with the housing bodies so that their centroid at least approximately on a central axis of a guide portion of Guide element is located.
  • the sleeve is acted upon by a spring which is supported on a shoulder which is formed on the first part of the valve element.
  • a preassemblable unit the at least the first part of the valve element, the Sleeve and the spring and optionally the guide element comprises.
  • damage to the high-precision guidance between the sleeve and the first part of the valve element during final assembly are thereby avoided.
  • the housing and thus its manufacture is simplified because now a smooth through hole can be provided without grading for receiving the valve element in the housing.
  • This also improves the high-pressure resistance of the fuel injection device, and its larger storage volume (space between the valve element and through-bore in the housing) leads to a reduction of pressure oscillations.
  • sleeve is acted upon by a first spring, which is supported on a shoulder which is formed on one side of a ring member which is acted upon on the other side by a second spring, at least indirectly on Housing supported, and which is coupled via a coupling element with the valve element in the closing direction.
  • the guide element can have a centering section, preferably a centering collar, which centers the guide element with respect to a housing body. At least indirectly, this also the valve element and other remote from the coupler areas of the housing are centered to each other.
  • an internal combustion engine carries the reference numeral 10. Overall, it serves to drive a motor vehicle, not shown.
  • a high-pressure conveyor 12 conveys fuel from a fuel reservoir 14 into a fuel pressure accumulator 16 ("rail"). In this fuel - for example, diesel or gasoline - is stored under very high pressure.
  • a fuel pressure accumulator 16 for example, diesel or gasoline - is stored under very high pressure.
  • To the rail 16 a plurality of fuel injection devices 18 are connected by means of a respective high-pressure port 17, which inject the fuel directly into them associated combustion chambers 20.
  • the fuel injectors 18 also each have a low-pressure port 21, via which they are connected to a low-pressure region, present with the fuel reservoir 14.
  • the fuel injectors 18 may in a first embodiment according to the Figures 2 and 3 be formed:
  • the fuel injection device 18 shown therein includes a housing 22 having a nozzle body 24, a main body 26 and an end body 28. Also possible is a one-piece design of main body 26 and end body 28.
  • a step-shaped recess 30 is present, in which a needle-like valve element 32 is received. This is in two parts: it consists of a control piston 34 and a nozzle needle 36th
  • the nozzle needle 36 has pressure surfaces 38 which delimit a pressure chamber 40 and their hydraulic force resulting in the opening direction of the nozzle needle 36 shows. At her in FIG. 2 bottom end, the nozzle needle 36 works in FIG. 2 not shown manner with a housing-side valve seat (without reference numerals) together. In this way, fuel outlet openings 42 can be separated from or connected to the pressure chamber 40.
  • the nozzle needle 36 has a section 44 with a smaller diameter and a section 46 with a larger diameter. With the section 46, the nozzle needle 36 is guided longitudinally displaceable in the nozzle body 24.
  • the control piston 34 is received in the main body 26.
  • An in FIG. 2 Upper end portion 48 of the control piston 34 is designed as a guide, which is received in a sleeve-like extension of the end body 28 and guided.
  • a spring 50 is supported on a shoulder formed by an annular collar 52 on the control piston 34 and acts on the control piston 34 in the closing direction.
  • upper axial end surface of the control piston 34 forms a hydraulic control surface 54 acting in the closing direction of the valve element 32. It defines, together with the end body 28, a control chamber 56.
  • the control chamber 56 is connected via an inlet throttle 58, which is present in the sleeve-like extension of the end body 28, with an existing present between the sleeve-like extension of the end body 28 and the main body 26 annular space 60, which in turn is connected to the high pressure port 17.
  • the annular space 60 is formed by the recesses 30 incorporated therein.
  • the control chamber 56 is also connected to a 2/2-way valve 66 through an outlet throttle 64 provided in the end body 28. Depending on the switching position, this connects or blocks the outlet throttle 64 to the Low pressure port 21 down.
  • the annular space 60 is also connected via at least one channel 68 to the pressure chamber 40.
  • the guide element 70 then comprises a base plate 72 and a cylindrical extension 74 integrally formed thereon, which forms a guide collar which has a centering function. Concentric with the extension 74, a guide bore forming a guide portion 76 is provided in the guide member 70, which in the in the Figures 2 and 3 shown mounting position with a guide on in the Figures 2 and 3 lower end portion 77 of the control piston 34 cooperates.
  • the upper and lower sides of the base plate 72 are formed as high-pressure sealing surfaces 78, in the installed position a secure seal of the housing 22, in particular the annular space 60 and lying within the guide member 70 spaces, with respect to the environment of the fuel injection device 18 is ensured.
  • the position of the center of gravity of the center axis also belongs. This is achieved by a corresponding design of the outer contour of the base plate 72, in such a way that the centroid is at least approximately on a central axis (not shown) of the guide bore 76.
  • a bore approach 80 is incorporated, which is concentric with the guide bore 76 and has a larger diameter than this.
  • the diameter of the bore extension 80 is also greater than the diameter of the portion 46 of the nozzle needle 36.
  • the bore extension 80 forms a stroke stop for the nozzle needle 36 in a manner yet to be illustrated.
  • the base plate 72 of the guide element 70 is also an eccentric passage opening or bore 82 introduced, which is part of the channel 68 in the installed position.
  • the port 82 must include a flow restrictor, as in FIG FIG. 2 indicated.
  • a sealing surface representing an end face 85 of the extension 74 is worked very precisely at right angles to the axis of the guide bore 76.
  • installation position is based on her via a sealing edge 86 from a sleeve 88, which is guided with little play on the control piston 34. It is by a spring 90 against the guide member 70th in turn, which in turn is supported on the main body 26.
  • the sleeve 88 belongs to a hydraulic coupler 92, through which the first part of the valve element 32, namely the control piston 34, with the second part of the valve element 32, namely the nozzle needle 36 is coupled.
  • the hydraulic coupler 92 comprises a hydraulic coupling space 94 with subspaces 94a and 94b, which is located between the sleeve 88, the guide element 70, which in the Figures 2 and 3 lower end portion of the control piston 34 and in the Figures 2 and 3 upper end portion of the nozzle needle 36 is formed.
  • the volume formed by the guide play between the guide bore 76 and the guide 77 on the control piston 34 is dimensioned so that the subspaces 94a and 94b of the coupling space 94 form a coherent control volume without hydraulic influence. Said volume thus forms a fluid passage from one side to the other of the guide element 70.
  • the fluid passage could also comprise at least one groove in the guide bore 76 and / or at least one flattening on the control piston 34.
  • the in the Figures 2 and 3 shown fuel injector 18 operates as follows: In the initial state, when energized switching valve 66, the control chamber 56 is separated from the low pressure port 21 and connected via the inlet throttle 58 to the high pressure port 17 and thus to the rail 16. In the control chamber 56 is thus the same pressure as in the annulus 60. This prevails over the channel 68 in the pressure chamber 40. Due to certain unavoidable leaks by the leadership of the nozzle needle 36 in the nozzle body 24 and the sleeve 88 on the control piston 34 is also in Coupling chamber 94 this pressure on.
  • the stroke of the nozzle needle 36 is limited by the stroke stop 80.
  • the stroke of the nozzle needle 36 can, as in the FIGS. 2 to 5 is represented by the processing of the bore approach 80 or by a paragraph processing on the end face 96 of the nozzle needle 36 can be realized.
  • the sealing surface 78 simultaneously forms the stroke stop for the end face 96 of the nozzle needle 36 (see FIG. 6 ).
  • control piston 34 will continue its lifting movement. Therefore, the free lift of the control piston 34 must always be greater than the maximum stroke of the nozzle needle 36. Due to the narrow guide clearance between the sleeve 88 and the control piston 34 and the resulting low leakage into the coupling chamber 94, the control piston 34 is braked so much in its stroke movement, that he can do only a little extra movement.
  • a Hubeinstellelement 97 is disposed between the end face 96 and the stroke stop 80, through which in addition an adjustment of a desired stroke of the nozzle needle 36 is possible.
  • the switching valve 66 is brought back into its closed position, in which the connection of the control chamber 56 is locked to the low pressure port 21. Via the inlet throttle 58, the pressure in the control chamber 56 increases continuously. As a result, the control piston 34 is again moved in the closing direction, since the pressure in the coupling chamber 94 is initially lower than in the control chamber 56. As a result, the pressure in the coupling chamber 94 increases due to the reduction in volume again, resulting in a closing movement of the nozzle needle 36.
  • FIG. 8 an alternative embodiment of a fuel injector 18 is shown. It is not only here, but in principle that such elements and areas that have equivalent functions to previously described elements and areas, the same reference numerals and are not explained again in detail. For the sake of simplicity, only those reference signs which are required to explain the differences from a previous exemplary embodiment are essentially entered.
  • the spring 90 which is applied to the coupling chamber 94 surrounding sleeve 88 against the guide member 70, not on the main body 26, but on the annular collar 52 and the shoulder formed by this is supported. Both springs 90 and 50 thus act on the same annular collar 52 of the control piston 34. When designing the spring 50, therefore, the force component of the spring 90 acting in the opening direction must be taken into account. Another difference to that. Embodiment of Figures 2 and 3 lies in the two-part end body 28. This was divided so that the outlet throttle 64 in the remaining end body 28 and the inlet throttle 58 is in the now separate sleeve 99. The spring 50 presses the sleeve 99 via the sealing surface or sealing edge (without reference numeral) against the end body 28 and thus generates a sufficient separation of the annular space 60 relative to the control chamber 56th
  • FIG. 8 shown fuel injection device 18 opposite to that of Figures 2 and 3 is that the control piston 34 with the sleeve 99, the spring 50, the spring 90 and the sleeve 88 may form a preassembled unit, so that in the later assembly of all components of the fuel injection device 18, the sleeves 99 and 88 no longer from Control piston 34 must be disconnected.
  • the recess 30 in the main body 26 of the housing 22 may be designed as a smooth through-hole, which allows the establishment of a comparatively large annular space 60 and a correspondingly large storage volume for the fuel.
  • FIG. 9 A similar variant shows FIG. 9 In this, instead of an annular collar 52 in the control piston 34, a circumferential groove 100 is provided in which an annular coupling element 102 is inserted, on which in turn, but only in the closing direction of the valve element 32, a ring member 104 is supported.
  • the spring 90 and on the other hand the spring 50.
  • the control piston 34 with the sleeve 99, the spring 50, the sleeve 88 and the spring 90th and the coupling element 102 and the ring element 104 form a preassembled unit, which is mounted as such and used in the final assembly in the recess 30 in the main body 26 of the housing 22 can be.

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 (11)

  1. Dispositif d'injection de carburant (18) pour un moteur à combustion interne (10), comprenant un boîtier (22) et un élément de soupape (32) disposé dans le boîtier (22), qui coopère avec un siège de soupape situé dans une région de l'ouverture de sortie de carburant (42), caractérisé en ce qu'au moins une première partie (34) et une deuxième partie (36) de l'élément de soupape (32) sont accouplées l'une à l'autre par le biais d'un dispositif d'accouplement hydraulique (92), qui présente un espace d'accouplement (94), qui est limité au moins en partie par une douille (88) guidée sur la première partie (34), et en ce qu'il comprend un élément de guidage (70) qui guide une région d'extrémité (77) de la première partie (34) de l'élément de soupape (32) disposée du côté du dispositif d'accouplement.
  2. Dispositif d'injection de carburant (18) selon la revendication 1, caractérisé en ce que la douille (88) s'appuie sur l'élément de guidage (70).
  3. Dispositif d'injection de carburant (18) selon la revendication 2, caractérisé en ce qu'au moins dans une partie d'une région de guidage (76) de l'élément de guidage (70) ou une région complémentaire de la première partie de l'élément de soupape (32), est prévu un passage de fluide (76) guidant d'un côté à l'autre côté de l'élément de guidage (70).
  4. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de guidage (70) comprend une butée de fin de course (80) pour la deuxième partie (36) de l'élément de soupape (32).
  5. Dispositif d'injection de carburant (18) selon la revendication 4, caractérisé en ce qu'un élément d'ajustement de course (97) est disposé entre la deuxième partie (36) de l'élément de soupape (32) et la butée de fin de course (80).
  6. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de guidage (70) comprend un canal de fluide (68) avec une ouverture de passage (82), qui relie un espace de pression (40) dans la région du siège de soupape au moins de manière indirecte avec un raccord haute pression (17).
  7. Dispositif d'injection de carburant (18) selon la revendication 6, caractérisé en ce que l'ouverture de passage comprend un étranglement d'écoulement (82).
  8. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de guidage (70) est serré entre deux corps de boîtier (24, 26) et ses faces de contact (78) avec les corps de boîtier (24, 26) sont configurées de telle sorte que leur centre de gravité surfacique se situe au moins approximativement sur un axe médian d'une région de guidage (76) de l'élément de guidage (70).
  9. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que la douille (88) est sollicitée par un ressort (90) qui s'appuie sur un épaulement (52) qui est réalisé sur la première partie (34) de l'élément de soupape (32).
  10. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la douille (88) est sollicitée par un premier ressort (90) qui s'appuie sur un épaulement qui est réalisé d'un côté d'un élément annulaire (104), qui est sollicité de l'autre côté par un deuxième ressort (50) qui s'appuie au moins de manière indirecte sur le boîtier (22), et qui est accouplé par le biais d'un élément d'accouplement (102) à l'élément de soupape (32) dans sa direction de fermeture.
  11. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de guidage (70) présente une portion de centrage, de préférence un épaulement de centrage, qui centre l'élément de guidage (70) par rapport à un corps de boîtier (26).
EP07712013A 2006-02-24 2007-01-12 Dispositif d'injection de carburant pour moteur a combustion interne Active EP1989436B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006008648A DE102006008648A1 (de) 2006-02-24 2006-02-24 Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine
PCT/EP2007/050300 WO2007098975A1 (fr) 2006-02-24 2007-01-12 Dispositif d'injection de carburant pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1989436A1 EP1989436A1 (fr) 2008-11-12
EP1989436B1 true EP1989436B1 (fr) 2010-03-17

Family

ID=37907846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07712013A Active EP1989436B1 (fr) 2006-02-24 2007-01-12 Dispositif d'injection de carburant pour moteur a combustion interne

Country Status (8)

Country Link
US (1) US8146839B2 (fr)
EP (1) EP1989436B1 (fr)
JP (1) JP4898840B2 (fr)
CN (1) CN101389852B (fr)
BR (1) BRPI0708231B1 (fr)
DE (2) DE102006008648A1 (fr)
RU (1) RU2426002C2 (fr)
WO (1) WO2007098975A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047935A1 (de) 2006-10-10 2008-04-17 Robert Bosch Gmbh Kraftstoffinjektor für eine Brennkraftmaschine
DE102008040680A1 (de) 2008-07-24 2010-01-28 Robert Bosch Gmbh Kraftstoff-Injektor
DE102008041561B4 (de) 2008-08-26 2022-05-19 Robert Bosch Gmbh Kraftstoffinjektor sowie Auslegungsverfahren für einen Kraftstoffinjektor
DE102009007095A1 (de) * 2009-02-02 2010-08-05 Continental Automotive Gmbh Einspritzventil
DE102010030383A1 (de) 2010-06-23 2011-12-29 Robert Bosch Gmbh Kraftstoffeinspritzvorrichtung mit hydraulischem Koppler
DE102010039980A1 (de) 2010-08-31 2012-03-01 Man Diesel & Turbo Se Zentriervorrichtung für eine Kraftstoffeinspritzdüse
US8989088B2 (en) 2011-01-07 2015-03-24 Integrated Device Technology Inc. OFDM signal processing in a base transceiver system
CN102996309B (zh) * 2012-12-04 2016-02-03 袁辉 高压共轨喷油器
DE102013221484A1 (de) * 2013-10-23 2015-04-23 Robert Bosch Gmbh Kraftstoffinjektor
CN104454274B (zh) * 2014-12-03 2017-09-29 中国第一汽车股份有限公司无锡油泵油嘴研究所 一种喷油器
CN104847556A (zh) * 2015-05-19 2015-08-19 中国重汽集团重庆燃油喷射系统有限公司 无静态泄漏喷油器
GB201520206D0 (en) * 2015-11-17 2015-12-30 Delphi Internat Operations Luxembourg S À R L Fuel injector
DE102018212665A1 (de) * 2018-07-30 2020-01-30 Robert Bosch Gmbh Kolbenpumpe und Kraftstofffördereinrichtung für kryogene Kraftstoffe

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH495504A (de) * 1968-08-28 1970-08-31 Sopromi Soc Proc Modern Inject Brennstoff-Einspritzventil mit elektromagnetischer Betätigung
SU1332061A1 (ru) * 1985-12-16 1987-08-23 Московский Институт Инженеров Железнодорожного Транспорта Форсунка
ATE166701T1 (de) * 1992-12-23 1998-06-15 Ganser Hydromag Brennstoffeinspritzventil
RU2069787C1 (ru) * 1994-02-14 1996-11-27 Акционерное общество открытого типа "Завод топливной аппаратуры", г.Ярославль Способ подачи топлива для дизельного двигателя с неразделенной камерой сгорания и устройство для его осуществления
DE19500706C2 (de) * 1995-01-12 2003-09-25 Bosch Gmbh Robert Zumeßventil zur Dosierung von Flüssigkeiten oder Gasen
JPH08296521A (ja) * 1995-02-28 1996-11-12 Isuzu Motors Ltd インジェクタの針弁制御装置
DE19541508A1 (de) * 1995-11-08 1997-05-15 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19709794A1 (de) * 1997-03-10 1998-09-17 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE19900037A1 (de) * 1999-01-02 2000-07-06 Bosch Gmbh Robert Kraftstoffeinspritzventil
DE10006111A1 (de) * 2000-02-11 2001-08-30 Bosch Gmbh Robert Kraftstoffeinspritzventil
DE10014450A1 (de) * 2000-03-23 2001-09-27 Bosch Gmbh Robert Vorrichtung zur Einspritzung von Kraftstoff mit variablem Einspritzdruckverlauf
DE10033428C2 (de) * 2000-07-10 2002-07-11 Bosch Gmbh Robert Druckgesteuerter Injektor zum Einspritzen von Kraftstoff
DE10248379A1 (de) * 2002-10-17 2004-04-29 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine
DE102004004006A1 (de) * 2004-01-27 2005-08-11 Robert Bosch Gmbh Integrierter hydraulischer Druckübersetzer für Kraftstoffinjektoren an Hochdruckspeichereinspritzsystemen
DE102004024282A1 (de) * 2004-05-15 2005-12-01 Robert Bosch Gmbh Pumpe-Düse-Einheit und Pumpe-Leitung-Düse-Einheit
DE102004035313A1 (de) * 2004-07-21 2006-02-16 Robert Bosch Gmbh Kraftstoffinjektor mit zweistufigem Übersetzer
DE102004037124A1 (de) * 2004-07-30 2006-03-23 Robert Bosch Gmbh Common-Rail-Injektor
DE102005004738A1 (de) * 2005-02-02 2006-08-10 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadelsteuerung für eine Brennkraftmaschine
DE102005012929A1 (de) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Steuerung des Einspritzventilglieds und variabler Übersetzung

Also Published As

Publication number Publication date
BRPI0708231A2 (pt) 2011-05-17
BRPI0708231B1 (pt) 2018-11-21
US8146839B2 (en) 2012-04-03
US20090020632A1 (en) 2009-01-22
JP4898840B2 (ja) 2012-03-21
RU2426002C2 (ru) 2011-08-10
WO2007098975A1 (fr) 2007-09-07
JP2009527686A (ja) 2009-07-30
RU2008137722A (ru) 2010-03-27
DE502007003146D1 (de) 2010-04-29
DE102006008648A1 (de) 2007-08-30
CN101389852B (zh) 2011-07-27
CN101389852A (zh) 2009-03-18
EP1989436A1 (fr) 2008-11-12

Similar Documents

Publication Publication Date Title
EP1989436B1 (fr) Dispositif d'injection de carburant pour moteur a combustion interne
EP2108080A1 (fr) Injecteur pour injecter du carburant dans les chambres de combustion des moteurs à combustion interne
EP2049787A1 (fr) Injecteur pour un système d'injection de carburant
EP3535486B1 (fr) Soupape d'injection de carburant pour injecter un carburant gazeux et / ou liquide
EP1379775A1 (fr) Soupape pour commander le passage de fluides
EP2715103B1 (fr) Ensemble buse pour un injecteur de carburant et injecteur de carburant
EP2310662B1 (fr) Injecteur de carburant
EP3055549B1 (fr) Ensemble piston-conduit de fluide, en particulier ensemble piston de commande-alésage de commande
DE102004017303A1 (de) Einspritzdüse
EP1910663B1 (fr) Systeme d'injection de carburant pour moteur a combustion interne a injection directe de carburant
DE102008035087A1 (de) Einspritzventil
EP1873393A1 (fr) Injecteur
DE102012220610B4 (de) Injektor
EP2256332B1 (fr) Injecteur de carburant doté d'un piston d'amplification de pression
EP2218906B1 (fr) Injecteur de carburant
EP2226490B1 (fr) Injecteur de carburant
EP1703118B1 (fr) Buse d'injection
EP2199590B1 (fr) Injecteur de carburant
DE102017202734A1 (de) Brennstoffeinspritzventil zum Einspritzen eines gasförmigen und/oder flüssigen Brennstoffs
EP2957760A1 (fr) Ensemble de buses pour un injecteur de carburant et injecteur de carburant
EP3035520B1 (fr) Unité de couplage hydraulique destinée à commander une soupape
EP2884088B1 (fr) Injecteur de carburant
DE102005025138B4 (de) Dosierventil
DE102007034034A1 (de) Injektor
EP2035685A1 (fr) Dispositif d'injection de carburant pour moteur à combustion interne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080924

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502007003146

Country of ref document: DE

Date of ref document: 20100429

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed

Effective date: 20101220

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20220125

Year of fee payment: 16

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

Ref country code: IT

Payment date: 20220124

Year of fee payment: 16

Ref country code: FR

Payment date: 20220120

Year of fee payment: 16

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

Effective date: 20230112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230112

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

Ref country code: DE

Payment date: 20250317

Year of fee payment: 19