EP1026393A2 - Injecteur pour système d'injection de moteur à combustion interne - Google Patents

Injecteur pour système d'injection de moteur à combustion interne Download PDF

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Publication number
EP1026393A2
EP1026393A2 EP00101964A EP00101964A EP1026393A2 EP 1026393 A2 EP1026393 A2 EP 1026393A2 EP 00101964 A EP00101964 A EP 00101964A EP 00101964 A EP00101964 A EP 00101964A EP 1026393 A2 EP1026393 A2 EP 1026393A2
Authority
EP
European Patent Office
Prior art keywords
bore
control unit
nozzle needle
guide
nozzle
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.)
Ceased
Application number
EP00101964A
Other languages
German (de)
English (en)
Other versions
EP1026393A3 (fr
Inventor
Eberhard Kull
Wolfgang Reisinger
Gerd Schmutzler
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1026393A2 publication Critical patent/EP1026393A2/fr
Publication of EP1026393A3 publication Critical patent/EP1026393A3/fr
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging 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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F02M61/163—Means being injection-valves with helically or spirally shaped grooves

Definitions

  • the invention relates to an injector according to the preamble of claim 1 for an injection system of an internal combustion engine.
  • Such injectors are generally known and usually exist of several modules arranged one above the other are, the individual modules braced axially against each other to each of the joints of neighboring modules to achieve a high pressure seal.
  • the tension of the individual modules can, for example, by a union nut take place, which accommodates all modules of the injector and is screwed to the top of the injector head.
  • Such injectors are under a high fuel pressure are operated and are used in particular in common rail systems used.
  • a module of the known injectors essentially consists from a nozzle body with outlet openings through which the Fuel being injected into a combustion chamber the internal combustion engine is injected. Between the injections the fuel flow to the outlet openings interrupted by a nozzle needle, which in the nozzle body is guided axially.
  • a control unit is located above the nozzle body arranged in which the mechanical actuating movement an actuator is transferred to the nozzle needle to the outlet opening in the nozzle body depending on the To release or close the position of the actuator and thereby the injection of fuel by the actuator Taxes.
  • Fuel is supplied from the injection system through a high-pressure channel in the injector upper section essentially axially through the individual Module runs and finally in the nozzle body at the bottom End of the injector in a branch hole laterally in a Pressure chamber opens, from which the fuel to the Outlet openings flows.
  • a disadvantage of this guidance of the high-pressure duct is that that the nozzle body must be made relatively wide in order enough space for the high-pressure duct on the side Offer.
  • the constructive design freedom for the nozzle body is in the known injectors through the guide of the high-pressure channel.
  • the invention is therefore based on the object of an injector to create a great high pressure and swell resistance having.
  • the invention is characterized by the characterizing features of the independent Patent claims resolved.
  • the invention includes the general technical teaching, the fuel in the lower part of the injector a separate high pressure duct, but via the already existing one lead central bore to the nozzle body, so that there is no separate high-pressure duct in this area can be.
  • the fuel in the lower part of the injector a separate high pressure duct, but via the already existing one lead central bore to the nozzle body, so that there is no separate high-pressure duct in this area can be.
  • the Cross section of the nozzle body can be reduced to the design of the nozzle body to other design requirements adapt. In this way it is possible, for example, flatten the nozzle needle guide.
  • the high pressure channel therefore preferably opens above the Nozzle body in the area of the control unit in the side Guide hole of the control unit, which is connected to a corresponding Guide bore in the nozzle body connects so that the Fuel up to the outlet openings in the nozzle body can be forwarded.
  • the fuel is supplied in the lower area of the Injector preferably centered around the nozzle needle, wherein in the guide bore of the nozzle body preferably a nozzle needle guide is arranged, on the one hand, a mechanical Guidance of the nozzle needle causes and on the other hand forwarding of fuel in the axial direction between the nozzle needle and the wall of the guide hole.
  • the Nozzle needle guide can for example consist of a hollow cylindrical Guide bushing exist in the wall axially continuous Channels or openings are arranged over which the Fuel is forwarded.
  • the nozzle needle guide consists of several Webs arranged in the guide bore of the nozzle body are and protrude inwards, the webs on the Contact surface of the nozzle needle and this mechanically lead while the fuel in the grooves between the individual docks can be forwarded.
  • the bridges can, however, also outside on the outer surface of the nozzle needle be molded and with their free ends on the outside of the inner wall the guide bore so that the fuel flow through the grooves between the individual webs can.
  • the Webs in the guide bore in the axial direction which is advantageous simple and inexpensive manufacture of the nozzle needle guide enables.
  • the webs run spirally in the guide bore of the nozzle body or in the outer surface of the nozzle needle, which is more complex in terms of production technology, but one Scoring in the lateral surface of the nozzle needle or on the Inner wall of the guide hole or even seizing the Nozzle needle prevented.
  • a nozzle needle with a rectangular, preferably square Cross-section to use, the axially extending Edges of the nozzle needle on the outside of the inner wall of the guide bore fit and slide so that the fuel in Flow past the nozzle needle in the axial direction can.
  • control unit used above is in the scope to understand the invention in general and includes all modules above the nozzle body, alone or in conjunction with other modules, the actuation of the nozzle needle by the actuator enable.
  • the high-pressure duct can therefore, for example even in a higher one within the injector Open module in the central hole, provided that Then fuel through the central bore up to the nozzle body can be continued.
  • fuel through the central bore up to the nozzle body can be continued.
  • a separate high pressure channel be which increases the high pressure strength of the nozzle body is increased.
  • the guide of the high-pressure duct according to the invention offers sufficient in the lower area of the injector Space for a storage chamber during an injection process as a buffer for the injected Serves fuel. This will cause pressure drops when the nozzle is opened reduced and the resulting pressure waves damped.
  • the storage chamber can, for example, in the control unit are arranged by the guide hole in the control unit has a significantly larger cross section than that Push rod, which indirectly controls the control movement of the actuator transfers to the nozzle needle. Between the push rod and the wall of the guide hole then remains sufficient space for the temporary storage of fuel.
  • the storage chamber can also be located directly in the nozzle body be arranged, which has the advantage that the cached fuel mass closer to the outlet openings lies.
  • the pilot hole points in the nozzle body a larger cross section than that Nozzle needle on so that sufficient to the side of the nozzle needle Space for the temporary storage of fuel remains.
  • the injector shown in Figure 1 enables injection of fuel in a combustion chamber of an internal combustion engine and has several modules arranged one above the other 300, 400,500,600 and 700 with circular outer cross-section on, which are axially braced against each other high-pressure sealing at the joints of neighboring modules to reach.
  • the bracing of the individual modules 300, 400,500,600 and 700 against each other is done by a Union nut that holds all modules 300, 400,500,600 and 700 and screwed to the top with an injector head is to which a fuel line from an injection system is connected, whereby to maintain clarity neither the union nut nor the injector head in the Drawing is shown.
  • a controllable actuator 100 preferably a piezoelectric one
  • the actuator stands with a closing body 370 over a plunger 200 in operative connection.
  • the plunger 200 is in a central Guide bore 310 of a servo body 300 out.
  • the servo body 300 additionally has a fuel channel 320, a Return channel 330 and a central valve chamber 345.
  • the return channel 330 projects laterally into the guide bore 310 and is connected to a fuel tank.
  • the pilot hole 310 goes over a conically opening first Valve seat 350 into the valve chamber 345.
  • the closing body 370 is introduced, which together with the first valve seat 350 in the closed state forms a high pressure resistant seal.
  • the closing body 370 is mushroom-shaped, the stem of the closing body 370 is surrounded by a valve spring 390 which is in the valve chamber 345 is arranged and on the closing body 370th exerts a spring force directed towards the first valve seat 350.
  • valve chamber 345, the closing body 370, the valve spring 390 and the first valve seat 350 form a servo valve 340, which is actuated by the actuator 100 via the plunger 200.
  • the servo valve 340 By opening the actuator 100 from the idle state the servo valve 340, creating a hydraulic connection (Drain) between the valve chamber 345 and the fuel tank via the guide bore 310 and the return channel 330 becomes.
  • the valve chamber 345 is a throttle body 400 limited to the servo body 300 in the axial direction connects.
  • the throttle body 400 has a fuel channel 430, one Drain channel 420 and an inlet channel 410 on the fuel channel 430 connects to the control chamber 440 and one Inlet throttle 415, which has the fuel flow in the control chamber 440 is restricted.
  • the drain channel 420 points an outlet throttle 425 on that the fuel outflow from the Control chamber 440 limited.
  • the intermediate body axially adjoining the throttle body 400 500 has a central piston guide 510, in which in in the axial direction, a control piston 520 is guided, the Control piston 520 its axial deflection on a pressure piston 650 transmits that in a storage chamber Guide bore 620 in a control body 600 axially is slidably arranged and guided.
  • the plunger 650 is preloaded by a spiral spring 660 and is thereby pressed down in the idle state.
  • the intermediate body 500 has a leakage line 550, led to the return channel 330 via the leakage liquid becomes.
  • the fuel channel 320 runs axially through the servo body 300, the throttle body 400, the intermediate body 500 and opens finally via a feed hole 610 in the control body 600 in the guide bore 620 which the fuel during of an injection process, so that in the lower area of the control body 600 no separate fuel channel as required in the upper modules of the injector.
  • This routing of the fuel channel 320 offers the advantage that the nozzle body 700 can be considerably narrower, since no space is required for the fuel channel on the side.
  • the shape of the nozzle body 700 can therefore be freely adapted to others design requirements can be adjusted.
  • the guide bore 620 serves in the control body 600 as a storage chamber for the temporary storage of Fuel, which is what occurs with conventional injectors Pressure drops when opening the nozzle and following Pressure waves are largely avoided.
  • the feed bore 610 Starting from the intermediate body 500, the feed bore 610 first runs parallel to the guide bore 620, then angled in the direction of the guide bore 620 and cuts it at an angle a.
  • the feed bore 610 consists of two bores which intersect in the control unit 600, one opening of which opens into the end face of the control unit 600 and the other of which opens into the guide bore 620 of the control unit 600.
  • the angled feed bore 610 is manufactured inexpensively by drilling from the upper end face of the control body 600 and the guide bore 620 of the control body 600.
  • the greater the angle a the greater the compressive strength of the control body 600 in the region of the intermediate wall between the feed bore 610 and the guide bore 620.
  • the angle a is preferably in the range from 10 ° to 25 °.
  • a nozzle body 700 is located below the control body 600 arranged in a central bore in which a nozzle needle 730 is arranged axially displaceable, the nozzle needle 730 with a rigid push rod 630 in operative connection stands, which is firmly connected to the pressure piston 650.
  • the Nozzle needle 730 is supported in a nozzle needle guide 740, arranged in the bore in the nozzle body 700 is, the nozzle needle guide 740 the bore cross section only partially closes, so that the fuel from the as Storage chamber serving guide bore 620 in the control body 600 through a guide recess 750 in the nozzle needle guide 740 and the bore in the nozzle body 700 at least an outlet opening 710 can flow through which the Fuel in the combustion chamber of the internal combustion engine with the nozzle open is injected.
  • the nozzle body 700 has a tapered valve seat 720 on that to the tapered tip the nozzle needle 730 is adapted so that the nozzle needle 730 and the valve seat 720 together form a valve that the Exit openings 710 depending on the axial position the nozzle needle 730 either releases or closes.
  • An axially upward in the direction of the throttle body 400 Movement of the nozzle needle 740 opens the valve 720, 730; an opposite downward movement closes that Valve 720, 730.
  • the nozzle needle 730 has changes in diameter on that by the fuel pressure an axial, of which second valve seat 720 directed restoring force on the Actuate nozzle needle 730.
  • the nozzle needle 730 forms one unit with the push rod 630 and the plunger 650, wherein the pressure piston 650 in the guide bore 620 of the Control body 600 is axially guided and not additionally in a nozzle needle guide 740 stored, which by manufacturing costs be reduced.
  • FIG. 2 shows a cross section through the nozzle body 700 in the height of the nozzle needle guide 740 along the line A-A Figure 1 with a further embodiment of the nozzle needle guide 740.
  • FIG. 2 shows a cross section through the nozzle body 700 in the height of the nozzle needle guide 740 along the line A-A Figure 1 with a further embodiment of the nozzle needle guide 740.
  • the nozzle needle guide 740 consists of a plurality of axially extending webs 760 on the nozzle body 700 are integrally formed in the guide bore and radially after protrude inside, so that the webs 760 inside on the outer surface the nozzle needle 730 and thereby the nozzle needle 730 lead while the fuel in the grooves 770 between the individual webs 760 in the axial direction to the outlet openings 710 can flow.
  • the axial arrangement of the Stege 760 also offers manufacturing advantages, so that the nozzle needle guide 740 can be manufactured inexpensively.
  • FIG. 3 shows a further embodiment of a nozzle needle guide 740, in which several webs 780 in the bore of the Nozzle body 700 protrude radially inward and thereby guide the 730 nozzle needle.
  • the webs 780 run here however spiral in the guide bore, which is production-related is more complex, but a scoring or even seizing the nozzle needle 730 in the nozzle needle guide 740 largely prevented.
  • the fuel flows here also spirally through grooves 790 between the individual webs 780 and thus passes the nozzle needle to the outlet openings 710.
  • the spiral webs 780 also on the outside of the lateral surface of the Nozzle needle must be formed and with its free ends on the outside the inner wall of the guide bore, which is manufacturing technology is much easier.
  • FIG. 4 shows another embodiment in cross section a nozzle needle guide, which largely corresponds to that in FIG shown nozzle needle guide matches, so that in the Representation the same reference numerals are used.
  • the webs 760 are here on the outside molded on the outer surface of the nozzle needle 730 what manufacturing technology is much easier. The fuel however, this also flows in the axial direction into the Grooves 770 between the webs 760.
  • Figure 5 shows another embodiment of a Nozzle needle guide according to the invention, in which the nozzle needle 730 has a substantially square cross section, where the cross-sectional corners or the axially extending edges the nozzle needle 730 are flattened and outside on the inner wall the guide bore so that the fuel can flow laterally past the nozzle needle 730.
  • Figure 6 shows another embodiment, the difference 1 in the area of the control unit 600
  • High pressure channel 320,611,612 has in the control unit 600 runs essentially parallel to the guide bore 620 and in the area of the high pressure-resistant sealing surface, which by the end faces of the control unit 600 and of the nozzle body 700 is formed, in an inlet groove 612 opens out, which runs parallel to the high pressure-resistant sealing surface and above the nozzle needle 730 in the guide bore 620 or the bore of the nozzle body 700 opens.
  • the inlet groove 612 is in the nozzle body and / or the control unit in Formed a longitudinal groove or of longitudinal grooves introduced and forms a fuel channel.
  • the invention is not limited in its execution the preferred embodiments given above. Rather, a number of variants are conceivable, which of the solution shown, even if fundamentally different Makes use of explanations.

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)
EP00101964A 1999-02-05 2000-02-01 Injecteur pour système d'injection de moteur à combustion interne Ceased EP1026393A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999104720 DE19904720C2 (de) 1999-02-05 1999-02-05 Injektor für eine Einspritzanlage einer Brennkraftmaschine
DE19904720 1999-02-05

Publications (2)

Publication Number Publication Date
EP1026393A2 true EP1026393A2 (fr) 2000-08-09
EP1026393A3 EP1026393A3 (fr) 2003-05-07

Family

ID=7896555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101964A Ceased EP1026393A3 (fr) 1999-02-05 2000-02-01 Injecteur pour système d'injection de moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP1026393A3 (fr)
DE (1) DE19904720C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031352A3 (fr) * 2000-10-13 2002-08-08 Bosch Gmbh Robert Soupape d'injection de carburant
WO2003012322A2 (fr) * 2001-07-25 2003-02-13 Robert Bosch Gmbh Soupape pour reguler le debit de liquides
WO2003038266A1 (fr) * 2001-10-20 2003-05-08 Robert Bosch Gmbh Soupape de commande de debit de liquides
FR2850712A1 (fr) * 2003-01-23 2004-08-06 Denso Corp Structure de coulissement pour tige a resistance amelioree a l'abrasion et injecteur
EP1445476A1 (fr) * 2003-02-04 2004-08-11 Siemens VDO Automotive S.p.A. Aiguille de soupape et dispositif de dosage comprenant une telle aiguille
WO2011063929A1 (fr) 2009-11-25 2011-06-03 L'orange Gmbh Injecteur de carburant pour moteurs à combustion interne
CN109416011A (zh) * 2016-06-27 2019-03-01 罗伯特·博世有限公司 用于制造用于喷射燃料的喷射器的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10050054B4 (de) * 2000-10-10 2005-01-27 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10063083A1 (de) * 2000-12-18 2002-08-01 Siemens Ag Kraftstoffinjektor
DE102005029473A1 (de) * 2005-06-24 2006-12-28 Siemens Ag Kraftstoffinjektor
US8690075B2 (en) 2011-11-07 2014-04-08 Caterpillar Inc. Fuel injector with needle control system that includes F, A, Z and E orifices

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AT378242B (de) * 1981-07-31 1985-07-10 Berchtold Max Prof Kraftstoffeinspritzanlage fuer brennkraftmaschinen, insbesondere dieselmotoren
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JP2757317B2 (ja) * 1989-11-09 1998-05-25 ヤマハ発動機株式会社 高圧燃料噴射装置
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US5467757A (en) * 1993-08-20 1995-11-21 Toyota Jidosha Kabushiki Kaisha Compression-ignition type engine and combustion method of same
GB9320798D0 (en) * 1993-10-08 1993-12-01 Lucas Ind Plc Fuel injection nozzle
US5826802A (en) * 1995-11-17 1998-10-27 Caterpillar Inc. Damped check valve for fluid injector system
EP0844385B1 (fr) * 1996-11-21 2003-03-05 Denso Corporation Dispositif d'injection de combustible à accumulation pour moteur à combustion interne
US5860597A (en) * 1997-03-24 1999-01-19 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector
JPH10318098A (ja) * 1997-05-16 1998-12-02 Unisia Jecs Corp フューエルインジェクタ
JP3134813B2 (ja) * 1997-06-20 2001-02-13 トヨタ自動車株式会社 内燃機関の燃料噴射弁

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031352A3 (fr) * 2000-10-13 2002-08-08 Bosch Gmbh Robert Soupape d'injection de carburant
US6764027B2 (en) 2000-10-13 2004-07-20 Robert Bosch Gmbh Fuel injection valve
WO2003012322A2 (fr) * 2001-07-25 2003-02-13 Robert Bosch Gmbh Soupape pour reguler le debit de liquides
WO2003012322A3 (fr) * 2001-07-25 2003-10-30 Bosch Gmbh Robert Soupape pour reguler le debit de liquides
WO2003038266A1 (fr) * 2001-10-20 2003-05-08 Robert Bosch Gmbh Soupape de commande de debit de liquides
FR2850712A1 (fr) * 2003-01-23 2004-08-06 Denso Corp Structure de coulissement pour tige a resistance amelioree a l'abrasion et injecteur
US7118046B2 (en) 2003-01-23 2006-10-10 Denso Corporation Sliding structure for shaft member with improved abrasion resistance and injector
DE102004003318B4 (de) * 2003-01-23 2015-09-03 Denso Corporation Injektor
EP1445476A1 (fr) * 2003-02-04 2004-08-11 Siemens VDO Automotive S.p.A. Aiguille de soupape et dispositif de dosage comprenant une telle aiguille
WO2011063929A1 (fr) 2009-11-25 2011-06-03 L'orange Gmbh Injecteur de carburant pour moteurs à combustion interne
DE102009054441A1 (de) * 2009-11-25 2011-06-30 L'Orange GmbH, 70435 Kraftstoff-Einspritzdüse für Brennkraftmaschinen
CN109416011A (zh) * 2016-06-27 2019-03-01 罗伯特·博世有限公司 用于制造用于喷射燃料的喷射器的方法

Also Published As

Publication number Publication date
DE19904720A1 (de) 2000-08-17
DE19904720C2 (de) 2003-01-16
EP1026393A3 (fr) 2003-05-07

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