EP1526274B1 - Dispositif d'injection de carburant, en particulier pour un moteur à combustion interne à injection directe - Google Patents

Dispositif d'injection de carburant, en particulier pour un moteur à combustion interne à injection directe Download PDF

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Publication number
EP1526274B1
EP1526274B1 EP04021298.7A EP04021298A EP1526274B1 EP 1526274 B1 EP1526274 B1 EP 1526274B1 EP 04021298 A EP04021298 A EP 04021298A EP 1526274 B1 EP1526274 B1 EP 1526274B1
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EP
European Patent Office
Prior art keywords
valve body
valve element
fuel injection
valve
fuel
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.)
Expired - Fee Related
Application number
EP04021298.7A
Other languages
German (de)
English (en)
Other versions
EP1526274A1 (fr
Inventor
Michael Kurz
Reinhard Tampe
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
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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 EP1526274A1 publication Critical patent/EP1526274A1/fr
Application granted granted Critical
Publication of EP1526274B1 publication Critical patent/EP1526274B1/fr
Expired - Fee Related 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
    • 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
    • F02M61/042—The valves being provided with fuel passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/161—Means for adjusting injection-valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/167—Means for compensating clearance or thermal expansion

Definitions

  • the invention relates to a fuel injection device, in particular for an internal combustion engine with direct injection, according to the preamble of claim 1.
  • the DE 40 23 223 A1 shows a fuel injector with a housing in which two mutually coaxial valve elements are guided. Both valve elements are each assigned a series of fuel outlet openings, and both valve elements are pressed by means of screw compression springs with sealing edges against corresponding housing-side valve seats.
  • the pressure in a pressure chamber which is limited by an acting in the opening direction pressure surface of the outer valve element, increased. As a result, this lifts against the force of the spring from the valve seat, so that fuel can escape through its associated fuel outlet channels. If the outside Valve element has lifted, the pressure associated with the inner valve element pressure surface is subjected to high pressure. Depending on how high the pressure of the fuel is, the inner valve element opens against the force of the compression spring.
  • Such fuel injectors are also referred to as "coaxial vario nozzles.”
  • a different fuel outlet cross-section can be made available with them. This has the advantage that even if only a small amount of fuel to be injected, this can be atomized relatively well.
  • the WO 87/06650 also describes an injection nozzle for internal combustion engines with two coaxial valve elements.
  • the present invention has the object, a fuel injection device of the type mentioned in such a way that an internal combustion engine operated with it shows a particularly good emission behavior.
  • the HC values in the exhaust gas are significantly improved. This is due to the fact that is reliably prevented in the fuel injection device according to the invention that the inner valve element unintentionally opens during an opening or closing movement of the outer valve element and thereby leak small amounts of fuel from the fuel injection device.
  • the inner valve element is divided into a guide body and a valve body.
  • the valve body is that portion of the valve element which cooperates with the housing-side valve seat and which ultimately, by its movement, releases or blocks the flow path of the fuel to the corresponding fuel outlet opening.
  • there is a radial gap between this valve body and the outer valve element so that the outer valve element can not transfer any transverse forces to this valve body during its closing operation (the outer valve element therefore does not touch the valve body of the inner valve element).
  • These transverse forces could lead to tilting of the inner valve element and consequently to a reduced seal between inner valve element and housing. Instead, it is the inner valve element is guided via a guide body in the outer valve element, which acts on the valve body in the closing direction.
  • the outer valve element transmits transverse forces on the guide body of the inner valve element and thereby tilts when closing the outer valve member of the guide body; However, this is not forwarded to the valve body by the decoupling of the guide body from the valve body, so that it can remain reliably in the closed position.
  • the guide body has a guide and sealing portion, which is formed in the vicinity of the valve body and is guided in the outer valve element sliding and fluid-tight.
  • the guide body has a guide and sealing portion, which is formed away from the valve body and is guided in the outer valve element sliding and fluid-tight. This corresponds to the embodiment in conventional fuel injection devices, which reduces the changes to be made for realizing the invention and keeps the manufacturing costs low.
  • a particularly advantageous embodiment of the fuel injection device according to the invention is characterized in that in a valve body facing the end face of the guide body opens a connected to a leakage connection leakage channel.
  • a "pressure infiltration" is avoided.
  • the area where the guide body and the valve body abut each other, is subjected to high pressure, whereby a desired opening of the inner valve member or the valve body would possibly prevented or at least delayed.
  • the leakage channel opens at its end facing away from the valve body in an annular space which is formed between the inner and outer valve element. It is understood that this annular space must be present on that side of the guide and sealing portion, which faces away from the fuel outlet channels.
  • Such a leakage channel can be made simple, since this annulus is usually already connected to a leakage connection. This keeps the manufacturing costs low.
  • the guide body and the valve body only approximately linear contact with a circumferential and relative to the valve body radially outer sealing edge.
  • a high surface pressure is locally achieved, through which a high sealing effect can be realized.
  • a pressurization of the valve seat facing away from the end face of the valve body is prevented or at least reduced, which increases the reliability of the function, in particular of the inner valve element.
  • a recess is present in an end face of the valve body facing the guide body or in an end face of the guide body facing the valve body, the radially outer boundary of which is designed as an annular collar with a circumferential sealing edge.
  • a particularly advantageous embodiment of the fuel injection device is further characterized in that the valve body has a rounded sealing surface which cooperates with a housing-side seat edge.
  • so-called “runout tolerances” can be compensated to a certain extent, which can reduce the manufacturing costs and thus also the production costs.
  • the "runout tolerances” are angular deviations of the contact surface between the valve body and the guide body from a plane orthogonal to the longitudinal axis.
  • this rounded sealing surface corresponds to a ring segment of the surface of a ball whose center lies on the central axis of the inner valve element.
  • This design which is known in principle from ball joints, also permits an "oblique" arrangement of the valve body during operation without reducing the seal between valve body and housing. As a result, it is possible to react automatically to angle deviations arising during operation without compromising the functionality of the fuel injection device.
  • a fuel system carries the overall reference numeral 10. It is used to supply an internal combustion engine with fuel, which, however, in FIG. 1 not shown in detail.
  • To the fuel system 10 includes a reservoir 12 from which a conveyor 14 promotes the fuel to a fuel rail ("rail") 16.
  • the conveyor 14 compresses the fuel to a very high pressure at which it is stored in the fuel rail 16.
  • several fuel injectors 18 are connected, of which in FIG. 1 only two are shown. These inject the fuel in each case in a directly associated combustion chamber 20 of the internal combustion engine.
  • a leakage port 24 leads from the fuel injectors 28 via a leakage line 26 to the reservoir 12 back.
  • the Figures 2 and 3 show one of the fuel injectors 18 in more detail: It comprises a housing 28, of which in FIG. 2 only a nozzle body 30 and a portion of an end piece 32 are shown. By doing Nozzle body 30 has an overall cylindrical and longitudinal recess 34 is present. In the upper region of an outer valve member 36 is slidably guided and fluid-tight. In the outer valve member 36, a through hole 38 is provided, in which an inner valve member 40 is inserted. This consists of a guide body 42 and a valve body 44th
  • the outer valve element 36 has on its outer circumferential surface on a circumferential shoulder, which forms a pressure surface 46 acting in the opening direction. This limits an annular pressure chamber 48, which is formed in the wall of the recess 34 and is connected via a high pressure passage 50 to the high pressure port 22. At the in the Figures 2 and 3 lower end of the outer valve member 36 is also provided in the opening direction acting pressure surface 52 ( FIG. 3 ), which delimits a pressure chamber 54, which is connected via an annular space 56 formed between the outer valve element 36 and the wall of the recess 34 with the pressure chamber 48 and thus ultimately with the high pressure port 22.
  • the pressure surface 52 is bounded radially inwardly by a sealing edge 58, which cooperates with an opposite conical seat surface 60 which is present on the nozzle body 30.
  • the outer valve element 36 is acted upon by a compression spring 61, which is supported on the end piece 32 in the direction of the seat surface 60.
  • the outer valve element 36 is associated with a number of fuel outlet channels 62.
  • the guide body 42 of the inner valve element 40 is an elongate bolt-like part, which has a smaller overall outer diameter than the inner diameter of the through-bore 38 in the outer valve element 36 FIG. 2 lower end of the Guide body 42, however, a guide and sealing portion 64 is provided, via which the guide body 42 is guided in the outer valve element 36.
  • the valve body 44 comprises a cylindrical central portion 66, a subsequent thereto, rounded tapered sealing portion 68, and a conical end portion 70. Between the central portion 66 and. The recess 38 in the outer valve member 36 is in FIG. 3 a radial gap 71 visible.
  • a guide body 42 facing end face of the central portion 66 has a recess 72 is present.
  • the radially outer boundary is formed as an annular collar 74 with a circumferential sealing edge 76.
  • the sealing edge 76 is in normal operation on a flat end face 78 of the guide body 42.
  • a leakage channel 79 leads from the end face 78 of the guide body 42 through the guide body 42 obliquely through and opens into a radial wall surface of the guide body 42, in FIG. 2 above the guide and sealing portion 64 in an annular space 77 formed between the guide body 42 and the recess 34. This is ultimately connected via the leakage connection 24 with the leakage line 26.
  • the sealing section 68 has a rounded sealing surface 80 (FIG. FIG. 3 ), which corresponds to a ring segment of the surface of a sphere and limits a pressure space 81.
  • a center 82 of this ball lies on a central axis 84 of the inner valve member 40.
  • the sealing surface 80 of the valve body 44 cooperates with a seat edge 86 which is formed in the wall of the recess 34 in the nozzle body 30.
  • the inner valve element 40 is acted upon by a compression spring 88, which is also supported on the end piece 32, against the seat edge 86.
  • the inner Valve element 40 is also associated with a series of fuel trip channels 90.
  • the pressure which then also prevails in the pressure chamber 81, is not sufficient in this case, however, to generate at the region of the sealing surface 80 of the valve body 44 located radially outside the seat edge 86 such a force acting in the opening direction that the inner valve element 40 against the force of the spring 88 opens. From the fuel outlet channels 90 thus no fuel can escape. Because the valve body 44 is not touched by the outer valve element 36 (gap 71), it can not transmit transverse forces to the valve body 44 either during the opening process or during the closing process. The outer valve element 36 can therefore also induce no tilting movement in the valve body 44, by which the sealing surface 80 at least partially lifted off from the seat edge 86 and thus would lead to the escape of a small amount of fuel.
  • FIG. 4a shows the stroke of the outer valve element 36, in FIG. 4b the stroke of the valve body 44, each at a voltage applied to the high pressure port 22 average fuel pressure. It will be appreciated that the position of the valve body 44 is not affected during opening and closing of the outer valve member 36.
  • the sealing edge 76 effectively prevents high-pressure fuel from reaching the recess 72 via the gap 71 and can generate a force acting in the closing direction of the valve body 44 there. This could affect the safe opening of the valve body 44.
  • fuel entering the recess 72 is nevertheless discharged through the leakage channel 79 to the leakage connection 24.

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

Claims (9)

  1. Dispositif d'injection de carburant (18), en particulier pour un moteur à combustion interne à injection directe, comprenant un boîtier (28) et au moins deux éléments de soupape (36, 40) disposés dans le boîtier (28) et coaxiaux l'un à l'autre, auxquels est associée respectivement au moins une ouverture de sortie de carburant (62, 90), comprenant un dispositif de précontrainte (61, 88) sollicitant les éléments de soupape (36, 40) dans le sens de fermeture, et comprenant respectivement au moins une surface de pression (46, 52, 80), agissant dans le sens d'ouverture, sur les éléments de soupape (36, 40), les surfaces de pression (36, 52, 80) délimitant respectivement un espace de pression (48, 54, 81) qui peut être relié à un raccord haute pression (22), l'élément de soupape intérieur (40) comportant au moins : un corps de soupape (44) qui coopère avec un siège de soupape (86) côté boîtier, et un corps de guidage (42) qui est guidé dans l'élément de soupape extérieur (36) et qui sollicite le corps de soupape (44) dans le sens de fermeture dans le cas normal, caractérisé en ce qu'entre le corps de soupape (44) et l'élément de soupape extérieur (36) est prévu un interstice radial (71) tel que l'élément de soupape extérieur (36) ne soit pas en contact avec le corps de soupape (44) de l'élément de soupape intérieur (40).
  2. Dispositif d'injection de carburant (18) selon la revendication 1, caractérisé en ce que le corps de guidage (42) comprend une portion de guidage et d'étanchéité (64), laquelle est réalisée à proximité du corps de soupape (44) et est guidée de manière glissante et étanche aux fluides dans l'élément de soupape extérieur (36).
  3. Dispositif d'injection de carburant (18) selon la revendication 1, caractérisé en ce que le corps de guidage (42) comprend une portion de guidage et d'étanchéité (64), laquelle est réalisée de manière éloignée du corps de soupape (44) et est guidée de manière glissante et étanche aux fluides dans l'élément de soupape extérieur (36).
  4. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un canal de fuite (79) relié à un raccord de fuite (24) débouche dans une surface frontale (78) du corps de guidage (42) tournée vers le corps de soupape (44).
  5. Dispositif d'injection de carburant (18) selon la revendication 4, caractérisé en ce que le canal de fuite (79) débouche à son extrémité opposée au corps de soupape (44) dans un espace annulaire (77) qui est réalisé entre l'élément de soupape intérieur (40) et l'élément de soupape extérieur (36) .
  6. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de guidage (42) et le corps de soupape (44) ne sont en contact que de manière linéaire avec une arête d'étanchéité (86) périphérique et située radialement à l'extérieur par rapport au corps de soupape (42).
  7. Dispositif d'injection de carburant (18) selon la revendication 6, caractérisé en ce que, dans une surface frontale, tournée vers le corps de guidage (42), du corps de soupape (44) ou dans une surface frontale, tournée vers le corps de soupape, du corps de guidage est prévu un évidement (72) dont la délimitation radialement extérieure est réalisée sous la forme d'une collerette annulaire (74) pourvue d'une arête d'étanchéité périphérique (76) .
  8. Dispositif d'injection de carburant (18) selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de soupape (44) présente une surface d'étanchéité arrondie (80), laquelle coopère avec une arête de siège (80) côté boîtier.
  9. Dispositif d'injection de carburant (18) selon la revendication 8, caractérisé en ce que la surface d'étanchéité arrondie (80) correspondant à un segment annulaire de la surface d'une sphère dont le centre (82) se situe sur l'axe médian (84) de l'élément de soupape intérieur (40).
EP04021298.7A 2003-10-22 2004-09-08 Dispositif d'injection de carburant, en particulier pour un moteur à combustion interne à injection directe Expired - Fee Related EP1526274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003148978 DE10348978A1 (de) 2003-10-22 2003-10-22 Kraftstoff-Einspritzvorrichtung, insbesondere für eine Brennkraftmaschine mit Direkteinspritzung
DE10348978 2003-10-22

Publications (2)

Publication Number Publication Date
EP1526274A1 EP1526274A1 (fr) 2005-04-27
EP1526274B1 true EP1526274B1 (fr) 2015-11-11

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Application Number Title Priority Date Filing Date
EP04021298.7A Expired - Fee Related EP1526274B1 (fr) 2003-10-22 2004-09-08 Dispositif d'injection de carburant, en particulier pour un moteur à combustion interne à injection directe

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Country Link
EP (1) EP1526274B1 (fr)
DE (1) DE10348978A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200402050A2 (tr) * 2004-08-18 2006-03-21 Robert Bosch Gmbh Eşeksenli alansal temaslı çift oturma çaplı enjektör
EP1744050B1 (fr) * 2005-07-13 2008-04-09 Delphi Technologies, Inc. Buse d'injection
EP1744051B1 (fr) * 2005-07-13 2008-04-09 Delphi Technologies, Inc. Buse d'injection
DE102007035752A1 (de) * 2007-07-31 2009-02-05 Robert Bosch Gmbh Kraftstoffinjektor mit einer auf dem Kegelventilsitz einer Düsennadel aufsitzenden Zentrierhülse als Führung für die Düsennadel
EP2060774A1 (fr) 2007-11-16 2009-05-20 Delphi Technologies, Inc. Injecteur à carburant
JP2009162184A (ja) * 2008-01-09 2009-07-23 Toyota Motor Corp 燃料噴射弁

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE2710138A1 (de) * 1977-03-09 1978-09-14 Maschf Augsburg Nuernberg Ag Mehrloch-einspritzduese
JPS60125767A (ja) * 1983-12-09 1985-07-05 Nissan Motor Co Ltd ディ−ゼル機関の燃料噴射ノズル
JPS60259768A (ja) * 1984-06-06 1985-12-21 Mitsubishi Heavy Ind Ltd 燃料噴射弁
WO1987006650A1 (fr) 1986-04-25 1987-11-05 Voest-Alpine Automotive Gesellschaft M.B.H. Injecteur pour moteurs a combustion interne
DE4023223A1 (de) 1990-07-21 1992-01-23 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE4432686C2 (de) * 1994-09-14 1996-09-05 Man B & W Diesel Ag Querschnittgesteuerte Einspritzdüse
US6338445B1 (en) * 1999-10-06 2002-01-15 Delphi Technologies, Inc. Fuel injector
DE10034444A1 (de) * 2000-07-15 2002-01-24 Bosch Gmbh Robert Brennstoffeinspritzventil
GB0021296D0 (en) * 2000-08-30 2000-10-18 Ricardo Consulting Eng A dual mode fuel injector
DE10118699A1 (de) * 2001-04-17 2002-10-31 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung und Kraftstoffsystem für Brennkraftmaschinen, sowie Brennkraftmaschine
DE10307002A1 (de) * 2003-02-19 2004-09-09 Volkswagen Mechatronic Gmbh & Co. Kg Kraftstoffeinspritzdüse und Pumpe-Düse-Einheit

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DE10348978A1 (de) 2005-05-25
EP1526274A1 (fr) 2005-04-27

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