EP2108080B1 - Injektor zum einspritzen von kraftstoff in brennräume von brennkraftmaschinen - Google Patents

Injektor zum einspritzen von kraftstoff in brennräume von brennkraftmaschinen Download PDF

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Publication number
EP2108080B1
EP2108080B1 EP07847880A EP07847880A EP2108080B1 EP 2108080 B1 EP2108080 B1 EP 2108080B1 EP 07847880 A EP07847880 A EP 07847880A EP 07847880 A EP07847880 A EP 07847880A EP 2108080 B1 EP2108080 B1 EP 2108080B1
Authority
EP
European Patent Office
Prior art keywords
injector
sleeve
part element
spring
coupler space
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
EP07847880A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2108080A1 (de
Inventor
Hans-Christoph Magel
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 EP2108080A1 publication Critical patent/EP2108080A1/de
Application granted granted Critical
Publication of EP2108080B1 publication Critical patent/EP2108080B1/de
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
    • 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
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
    • 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
    • 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
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to an injector, in particular a common rail injector, according to the preamble of claim 1.
  • Such an injector is from the WO 20051068820 A1 the applicant known.
  • a multi-part valve element is provided, the two parts of which are hydraulically coupled to each other via a coupler space.
  • the coupler space is bounded radially by a sleeve which is axially supported on the end face of an additional, separate housing part.
  • a common rail injector known, can be injected with the fuel directly into this associated combustion chamber of an internal combustion engine.
  • a one-piece valve element is arranged in a housing, which has a total acting in the opening direction of the valve element pressure surface.
  • control surface is provided, which limits 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.
  • valve element is designed in two parts, wherein the two components (control rod and nozzle needle) abut each other in a permanently connected to a low pressure region of the injector low pressure space.
  • a diameter step of the valve element is realized to increase the hydraulic closing force.
  • a disadvantage of the known injector are the high leakage losses, the inevitably occur, since the low-pressure chamber is connected in two axial directions via a guide gap with the high pressure region of the injector and thus fuel in the low-pressure chamber (part of Injektomieder Kunststoffs) and can flow from there to a return line.
  • an injector in which the valve element is formed in two parts, wherein the two components (control rod and nozzle needle) are hydraulically connected to each other via a coupler space. Since the coupler space is not connected to a low-pressure region of the injector, there is also a high fuel pressure within the coupler space. The hydraulic coupling causes the nozzle needle to follow a controlled movement of the control rod.
  • the invention has the object of developing an injector according to the preamble of claim 1 such that it is structurally particularly simple in construction and inexpensive to produce.
  • the sleeve is guided on one of the two coupled by means of the coupler space sub-elements and spring-loaded in the direction of the respective other sub-element.
  • the only axial sealing or guide gap is formed in the axial direction, via which the coupler chamber is hydraulically connected to the pressure region of the injector.
  • the sleeve With its front side, the sleeve is located on the respective other sub-element or on a contact surface of this sub-element, so that between sleeve and contact surface a sealing area is formed.
  • the force acting on the sleeve in the axial direction spring is arranged such that it acts in the opening direction on the further away from the combustion chamber sub-element, in particular the control rod.
  • the spring counteracts a closing spring, wherein the spring force of the closing spring is greater than the spring force of the sleeve spring, so that only the differential spring force acts in the closed position, which has a positive effect on the control of the injector.
  • the sleeve is not formed as a separate component, but is integrally formed with the first or the second sub-element.
  • the coupler space is within the first and / or the second sub-element.
  • the two sub-elements are slidably guided in the axial direction, wherein the single axial gap is formed in this embodiment between the two sub-elements.
  • This construction makes it possible to arrange a further axially between the two sub-elements, which is supported in each case on the opposite end faces.
  • the spring force is to be dimensioned so that it is less than the spring force a closing spring acting on one of the sub-elements.
  • an axial stop is provided for the subelement further away from the combustion chamber, in particular the control rod, so that a gap is established between the two subelements when the nozzle needle rests on the needle seat when at rest.
  • the stop mass is reduced in the needle seat, since not the entire valve element, but only the nozzle needle is pressed onto the needle seat.
  • a common rail injector 1 for injecting fuel into combustion chambers of internal combustion engines is shown.
  • the injector 1 is supplied via a high-pressure supply line 2 from a high-pressure fuel accumulator 3 (rail) with fuel at high pressure (about 1800 to 2000 bar), in particular diesel oil or gasoline.
  • the high-pressure fuel accumulator 3 is supplied with fuel from a low-pressure reservoir 5 by a high-pressure pump 4 designed in particular as a radial piston pump.
  • a low-pressure region 6 of the injector is hydraulically connected via a return line 7 to the reservoir 5. Depending on the operating condition, the pressure in the low-pressure region of the injector is between approximately 0 and 10 bar.
  • a fuel control amount is discharged from a control chamber 8 and fed via the high-pressure pump 4 the high-pressure circuit again.
  • the injector body 1 has an injector body 9 and a nozzle body 10, the injector body 9 and the nozzle body 10 via a nozzle retaining nut, not shown, which is screwed to the injector body 9, are braced against each other, wherein the nozzle retaining nut, not shown, is penetrated by the nozzle body 10 in the axial direction.
  • a stepped bore 11 is introduced, which continues in the axial direction in a bore 12 in the injector 9.
  • a valve member 14 is guided longitudinally displaceable.
  • the valve element 14 has a control rod 8 with an end face 15 limiting control rod 16 and an axially adjacent to the combustion chamber nozzle needle 17.
  • the nozzle needle 17 has a closing surface 19 with which it can be brought into tight contact with a needle seat 20 formed within the nozzle body 10.
  • the nozzle needle 17 is polygonal contoured in an axial section 22 and guided on the circular contoured stepped bore wall of the nozzle body 10 so that evenly distributed over the circumference Axialkanäle 23 are formed by the fuel within the pressure chamber 13 in the axial direction of the mouth region of the high-pressure supply line 2 can flow to the nozzle hole assembly 21 with the valve element 16 open.
  • a substantially conically shaped pressure application surface 24 is formed, on which a compressive force acts in the opening direction.
  • This opening force temporarily counteracts a closing force on the end face 15 within the control chamber 8.
  • the control chamber 8 is hydraulically connected via an inlet throttle 25 within a sleeve-shaped component 26 with the pressure chamber 13. Via an outlet throttle 27, the radially limited by the sleeve-shaped member 26 control chamber 8 with the low pressure region 6 is connected.
  • the outlet throttle 27 having flow channel 28, can flow through the fuel temporarily in the low-pressure chamber 6, is passed through a cylinder plate 29.
  • the sleeve-shaped component 26 in turn is biased by a closing spring 30 in the axial direction of the tightly clamped inside the injector 1 cylinder plate 29.
  • the closing spring 30 is supported for this purpose in the axial direction on a peripheral collar 31 of the control rod 16, whereby a closing force on the control rod 16 acts permanently.
  • a control valve 32 In order for fuel to flow out of the control chamber 8 into the low-pressure region 6, whereby the pressure force acting on the end face 15 of the control rod 16 is reduced, a control valve 32 is provided which has an electromagnetic actuator 33 which cooperates with an armature plate 34.
  • the anchor plate 34 is fixedly connected to a valve body 35, which in turn acts in the axial direction kraftbeauf provided on a valve ball 36.
  • the valve body 35 and thus the valve ball 36 lifts off from a valve seat 36 formed on the cylinder plate 29, so that fuel can flow via the outlet throttle from the control chamber 8 in the low pressure region 6 and from there via the return line 7.
  • the flow cross-sections of the inlet throttle 25 and the outlet throttle 27 are coordinated so that the inflow into the control chamber 8 from the pressure chamber 13 is weaker than the outflow from the control chamber 8 in the low pressure region and thus with open control valve 32, a net outflow of fuel the control chamber 8 results.
  • the resulting pressure drop in the control chamber 8 causes the amount of the closing force falls below the amount of the opening force and the valve element 14 lifts from the needle seat 20.
  • the control rod 16 and the nozzle needle 17 are hydraulically coupled to each other via a hydraulic coupler 38 only.
  • the nozzle needle 17 follows an opening movement and a closing movement of the control rod 16.
  • the diameter D1 of the nozzle needle 17 within the sleeve 39 delimiting the coupler space 38 is less than the diameter D2 of the control rod 16 guided in the sleeve-shaped component 26.
  • the coupler space 38 which has no Connection to the low pressure region of the injector 1 is filled with fuel and disposed radially within the pressure chamber 13, so that there is approximately rail pressure within the coupler space 38.
  • the coupler space 38 is bounded radially by a sleeve 39 within which the nozzle needle 17 is guided in an axially displaceable manner. Between nozzle needle 17 and sleeve 39, a circular contoured axial gap 40 (guide or sealing gap) is formed. This is the only guide gap, via which the coupler space 38 is connected to the high pressure area, in particular the pressure space 13.
  • the sleeve 39 is spring-loaded by means of a helical spring 41, which is supported axially on an annular shoulder 42 of the stepped bore 11 within the nozzle body 10 in the axial direction on a contact surface 43 on the front face 15 opposite end face 44 of the control rod.
  • the contact surface 43 is formed on a widened in the radial direction paragraph 45 of the control rod 16. Due to the spring force of the spring 41, the sleeve 39 is sealingly against the contact surface 43.
  • the spring 41 acts on the control rod 16 via the sleeve 39 in the opening direction with a spring force which counteracts the spring force of the closing spring 30.
  • the spring 41 is designed to be weaker than the closing spring 30, so that a total of permanently acting in the closing direction, a small resultant spring force on the valve element 14. Since the closing spring 30 is designed to be stronger than the spring 41, the return of the control rod 16 after the injection process via the large spring force of the closing spring 30, whereby a reset of the control rod without opening the sleeve 39, so lifting the sleeve 39 of the contact surface 23 is guaranteed.
  • a slight fuel throttle may be provided in the region of the axial section 22.
  • the fuel circuit is only partially shown.
  • the coupler space 38 is also bounded by a sleeve 39.
  • the spring 41 is not supported an annular shoulder of the stepped bore 11, but at a radially widened portion 46 of the control rod 16, whereby the sleeve 39 in the axial direction on a combustion chamber facing away from abutment surface 47 of the nozzle needle 17 is spring-loaded.
  • the contact surface 47 is formed on a widened in the radial direction portion 48 of the valve needle 17.
  • the section 46 of the control rod 16 forms an axial stop for the control rod 16 on the nozzle body 10, so that in the idle state shown (the nozzle needle 17 rests on the needle seat 20 and the control chamber 8 is pressurized with the control valve 32 closed) a gap 49th between the nozzle needle 17 and the control rod 16 is formed.
  • axial openings 50 are provided within the section 46.
  • the only axial gap which connects the coupler chamber 38 hydraulically to the pressure chamber 13 is formed between the control rod 16 and the sleeve 39 guided thereon.
  • no separate sleeve for limiting the coupler space 38 is provided.
  • the coupler space 38 is formed within the control rod 16.
  • the nozzle needle 17 is guided in a sleeve-shaped extension 51 of the control rod 16.
  • the spring 41 is supported in the axial direction on the one hand on the annular shoulder 42 of the nozzle body 10 and on the other hand frontally on the sleeve-shaped extension 51, whereby the control rod 16 in the opening direction is subjected to spring force.
  • the spring 41 is designed to be weaker than the also acting on the control rod 16 closing spring 30.
  • the coupler chamber 38 with the high-pressure region connecting axial gap 40 is formed in the embodiment shown between the outer surface of the nozzle needle 17 and inner peripheral surface of the sleeve-shaped extension 51.
  • Fig. 4 is the coupler space 38, similar to in Fig. 3 formed within a sleeve-shaped extension 51 of the control rod 16.
  • the control rod 16 is guided with a polygonal contoured portion 21 within the nozzle body 10 in the axial direction to avoid lateral forces on the nozzle needle 17.
  • the nozzle needle is designed substantially smaller than the control rod 16, resulting in a small mass in the needle seat.
  • the spring 41 is supported on the one hand on the control rod 16 and on the other hand on the nozzle needle 17. In the rest state shown, a gap 49 is provided between the control rod 16 and the nozzle needle 17.

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)
EP07847880A 2007-01-09 2007-12-06 Injektor zum einspritzen von kraftstoff in brennräume von brennkraftmaschinen Not-in-force EP2108080B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007001363A DE102007001363A1 (de) 2007-01-09 2007-01-09 Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen
PCT/EP2007/063393 WO2008083881A1 (de) 2007-01-09 2007-12-06 Injektor zum einspritzen von kraftstoff in brennräume von brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP2108080A1 EP2108080A1 (de) 2009-10-14
EP2108080B1 true EP2108080B1 (de) 2012-05-30

Family

ID=38965774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07847880A Not-in-force EP2108080B1 (de) 2007-01-09 2007-12-06 Injektor zum einspritzen von kraftstoff in brennräume von brennkraftmaschinen

Country Status (6)

Country Link
US (1) US8069840B2 (ja)
EP (1) EP2108080B1 (ja)
JP (2) JP5284277B2 (ja)
CN (1) CN101578445B (ja)
DE (1) DE102007001363A1 (ja)
WO (1) WO2008083881A1 (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040680A1 (de) * 2008-07-24 2010-01-28 Robert Bosch Gmbh Kraftstoff-Injektor
DE102008041502A1 (de) * 2008-08-25 2010-03-04 Robert Bosch Gmbh Kraftstoffinjektor mit einem Magnetventil
DE102008041561B4 (de) 2008-08-26 2022-05-19 Robert Bosch Gmbh Kraftstoffinjektor sowie Auslegungsverfahren für einen Kraftstoffinjektor
DE102009000181A1 (de) 2009-01-13 2010-07-15 Robert Bosch Gmbh Kraftstoff-Injektor
CN102213165B (zh) * 2010-04-08 2013-02-13 北京亚新科天纬油泵油嘴股份有限公司 高压共轨电控喷油器
DE102011083260A1 (de) * 2010-09-29 2012-03-29 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
EP2674608B1 (en) * 2012-06-13 2015-08-12 Delphi International Operations Luxembourg S.à r.l. Fuel injector
EP2863044B1 (en) * 2013-10-15 2016-06-29 Continental Automotive GmbH Injection valve
US20150252761A1 (en) * 2014-03-07 2015-09-10 Transonic Combustion, Inc. Actuation system for piezoelectric fuel injectors
GB201421885D0 (en) * 2014-12-09 2015-01-21 Delphi International Operations Luxembourg S.�.R.L. Fuel injector
FR3045109B1 (fr) * 2015-12-11 2018-01-05 Delphi Technologies Ip Limited Injecteur de carburant
US10006429B2 (en) * 2016-03-31 2018-06-26 GM Global Technology Operations LLC Variable-area poppet nozzle actuator
CN108412653B (zh) * 2018-03-30 2023-11-03 重油高科电控燃油喷射系统(重庆)有限公司 一种共轨喷油器
WO2020232287A1 (en) 2019-05-15 2020-11-19 Clearflame Engines, Inc. Cold-start for high-octane fuels in a diesel engine architecture
JP2021080844A (ja) 2019-11-15 2021-05-27 株式会社デンソー 燃料噴射装置
US11506162B2 (en) 2020-11-17 2022-11-22 Caterpillar Inc. Trapped volume split check assembly in fuel injector

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CN1082164C (zh) * 1996-06-18 2002-04-03 孙平 磁耦合内驱动阀门
WO1999001662A1 (de) * 1997-07-02 1999-01-14 Robert Bosch Gmbh Ventil zum steuern von flüssigkeiten
DE10024703A1 (de) * 2000-05-18 2001-11-22 Bosch Gmbh Robert Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine
DE10145620B4 (de) * 2001-09-15 2006-03-02 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten
DE10151688A1 (de) * 2001-10-19 2003-04-30 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10203657A1 (de) * 2002-01-30 2003-08-28 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10207227A1 (de) * 2002-02-21 2003-09-04 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10229418A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Einrichtung zur Dämpfung des Nadelhubes an Kraftstoffinjektoren
DE10229415A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Einrichtung zur Nadelhubdämpfung an druckgesteuerten Kraftstoffinjektoren
DE10229419A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Druckübersetzter Kraftstoffinjektor mit schnellem Druckabbau bei Einspritzende
DE10315015B4 (de) * 2003-04-02 2005-12-15 Robert Bosch Gmbh Kraftstoffinjektor mit Druckverstärker und Servoventil mit optimierter Steuermenge
DE10315016A1 (de) * 2003-04-02 2004-10-28 Robert Bosch Gmbh Kraftstoffinjektor mit leckagefreiem Servoventil
DE10326046A1 (de) * 2003-06-10 2004-12-30 Robert Bosch Gmbh Einspritzdüse für Brennkraftmaschinen
DE10337574A1 (de) * 2003-08-14 2005-03-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE102004002309A1 (de) 2004-01-16 2005-08-04 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadelstreuerung
DE102004002299A1 (de) * 2004-01-16 2005-08-04 Robert Bosch Gmbh Kraftstoffinjektor mit direkt angesteuertem Einspritzventilglied
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DE102006009659A1 (de) * 2005-07-25 2007-02-01 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine mit Kraftstoff-Direkteinspritzung

Also Published As

Publication number Publication date
US20100050990A1 (en) 2010-03-04
CN101578445A (zh) 2009-11-11
EP2108080A1 (de) 2009-10-14
JP5284277B2 (ja) 2013-09-11
JP5627656B2 (ja) 2014-11-19
JP2010515853A (ja) 2010-05-13
DE102007001363A1 (de) 2008-07-10
CN101578445B (zh) 2014-04-09
JP2013007389A (ja) 2013-01-10
US8069840B2 (en) 2011-12-06
WO2008083881A1 (de) 2008-07-17

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