EP0523405B1 - Procédé d'ajustement d'une soupape d'injection de combustible et soupape d'injection de combustible - Google Patents

Procédé d'ajustement d'une soupape d'injection de combustible et soupape d'injection de combustible Download PDF

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Publication number
EP0523405B1
EP0523405B1 EP92110520A EP92110520A EP0523405B1 EP 0523405 B1 EP0523405 B1 EP 0523405B1 EP 92110520 A EP92110520 A EP 92110520A EP 92110520 A EP92110520 A EP 92110520A EP 0523405 B1 EP0523405 B1 EP 0523405B1
Authority
EP
European Patent Office
Prior art keywords
fuel
fuel injection
injection valve
valve
inner pole
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 - Lifetime
Application number
EP92110520A
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German (de)
English (en)
Other versions
EP0523405A3 (en
EP0523405A2 (fr
Inventor
Alwin Stegmaier
Kenneth J. Zwick
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 EP0523405A2 publication Critical patent/EP0523405A2/fr
Publication of EP0523405A3 publication Critical patent/EP0523405A3/de
Application granted granted Critical
Publication of EP0523405B1 publication Critical patent/EP0523405B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/001—Measuring fuel delivery of a fuel injector
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve

Definitions

  • the invention is based on a method for setting the static fuel quantity of a fuel injector sprayed off during the stationary opening state, or on a fuel injector according to the preamble of claim 4.
  • the stroke of the valve closing body and thus the static flow quantity of a medium emitted during the stationary opening state of the fuel injector is set by the end face of the nozzle body, on which the residual air gap of the armature against the core determining stop plate is abraded.
  • this valve and the adjustment method used have the disadvantage that the end face of the nozzle body can only be ground with a partially dismantled valve, so that the exact adjustment of the valve needle stroke is very complex.
  • a fuel injector with a valve seat body that has at least one spray opening is described in DE-A-38 31 196.
  • the valve seat body is pressed into the longitudinal opening of the nozzle holder, the press-in depth determining the valve needle stroke.
  • the setting of the valve needle stroke can be carried out on the fully assembled injection valve, but when the valve seat body is pressed into the nozzle holder, there is a risk of chip formation on the valve seat body and / or the seat carrier.
  • the spray openings of the perforated plate have predetermined opening cross sections which influence the static amount of fuel.
  • the exact flow rate of individual perforated plates is measured in order to combine a perforated plate with a specific valve group that has a known valve lift.
  • the fuel injector is assembled and provided with a fuel filter, with the risk that the static amount of fuel of the valve is changed in an undesirable manner.
  • an electromagnetically actuated fuel injection valve has already been proposed, the tubular inner pole of which has a through hole which is concentric with a longitudinal axis of the valve. In this through hole is used for adjusting the return spring adjusting bush is pressed, in the longitudinal opening of a fixed, non-adjustable throttle body is arranged.
  • the method according to the invention for adjusting the static fuel quantity of a fuel injector delivered during the stationary opening state with the features of claim 1 and the fuel injector according to the invention with the features of claim 4 have the advantage of simple and inexpensive adjustment of the static fuel quantity on the otherwise fully assembled fuel injector.
  • the setting on the otherwise fully assembled fuel injector enables the required static fuel quantity to be maintained particularly precisely without the risk that the actual static fuel quantity will be changed by a subsequent operation, for example the installation of a fuel filter. This ensures that the fuel injection valves produced in series production have particularly small variations in the static fuel quantity and that, for example, the same quantity of fuel is metered into the individual cylinders of an internal combustion engine.
  • the static amount of fuel in a fuel injector which has a tubular inner pole, a flow bore that runs concentrically to a longitudinal axis of the valve and a throttle body, can be adjusted by varying the free flow cross section of the throttle device by varying the insertion depth of the throttle body in the flow bore of the inner pole is changeable.
  • FIG. 1 An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
  • the figure shows a fuel injector according to the embodiment.
  • a fuel injection valve for fuel injection systems of mixture-compression-ignition internal combustion engines is shown.
  • the fuel injector has an inner pole 3, which is surrounded by a solenoid coil 1 and serves as a fuel inlet connection.
  • the solenoid coil 1 with a coil body 5 is provided with a plastic encapsulation 7, at the same time an electrical connecting plug 9 is also injection molded on, so that the solenoid coil 1 and the connecting plug 9 contains independent plastic injection molded part.
  • the magnetic coil 1 which has the stepped coil body 5 in the radial direction with a winding 11 which is stepped in the radial direction, in conjunction with the inner pole 3 having a constant outer diameter, enables a particularly compact construction of the fuel injector.
  • a tubular intermediate part 17 is connected to a lower pole end 13 of the inner pole 3 concentrically with a longitudinal valve axis 15, for example by welding, and overlaps the pole end 13 partially axially with an upper cylinder section 19.
  • the stepped bobbin 5 partially overlaps the inner pole 3 and, with a step 21 of larger diameter, the upper cylinder section 19 of the intermediate part 17.
  • the intermediate part 17 is provided at its end facing away from the inner pole 3 with a lower cylinder section 23 which overlaps a tubular nozzle holder 25 and with this is connected for example by welding.
  • a cylindrical valve seat body 29 is tightly mounted by welding in a through opening 27 running concentrically to the valve longitudinal axis 15.
  • the valve seat body 29 has a fixed valve seat 31 facing the magnet coil 1, downstream of which, for example, two spray openings 33 formed, for example, by eroding, are formed in the valve seat body 29.
  • the spray openings 33 have such large opening cross sections that the actual quantity of fuel dispensed during the stationary opening state of the fuel injector exceeds the predetermined target quantity, unless a further throttle device is provided for metering the fuel.
  • the valve seat body 29 Downstream of the spray openings 33, has a treatment bore 35 which widens in the shape of a truncated cone in the flow direction.
  • a tubular adjusting bushing 41 is pressed into a stepped flow bore 37 of the inner pole 3 that runs concentrically to the valve longitudinal axis 15.
  • the return spring 39 rests with one end on the end face 43 of the adjusting bush 41 facing the valve seat body 29.
  • the insertion depth of the adjusting bush 41 in the Flow bore 37 of the inner pole 3 determines the spring force of the return spring 39 and thus also influences the dynamic fuel quantity emitted during the opening and closing stroke of the valve.
  • the return spring 39 is supported with its end facing away from the adjusting bush 41 in the downstream direction on an end face 45 of a connecting tube 47.
  • a tubular armature 49 is connected, for example by welding, which is guided through a guide collar 51 of the intermediate part 17.
  • a valve closing body 53 which cooperates with the fixed valve seat 31 of the valve seat body 29 and is designed, for example, as a ball, is connected to it, for example by welding.
  • an axial gap 59 is formed, in which a residual air gap between an inlet-side end face 61 of the armature 49 and the end face 55 of the by clamping
  • the non-magnetic stop disk 63 which forms the pole 13 and limits the stroke of the valve closing body 53 during the opening process of the valve, is arranged.
  • the magnet coil 1 is surrounded by at least one guide element 65, for example designed as a bracket and serving as a ferromagnetic element, which at least partially surrounds the magnet coil 1 in the circumferential direction and rests with its one end on the inner pole 3 and with its other end on the nozzle holder 25 and is connected to them for example by welding or soldering.
  • a part of the fuel injector is enclosed by a plastic sheath 67, which extends from the inner pole 3 in the axial direction over the magnet coil 1 and the at least one guide element 65.
  • a fuel filter 71 is arranged in the stepped flow bore 37 of the inner pole 3 upstream of the adjusting bush 41 in the direction facing away from the pole end 13.
  • the fuel entering the fuel injection valve flows through the fuel filter 71 in a known manner and exits the fuel filter in the radial direction, any contaminants in the fuel being retained in the fuel filter 71.
  • the fuel filter 71 has a retaining ring 75 on the circumference of its upper end 73 facing away from the pole end 13.
  • the fuel filter 71 can be mounted by pushing it into the stepped flow bore 37 of the inner pole 3 and, in the assembled state, lies with its retaining ring 75 with a slight radial pressure on the wall of a parallel section 77 of the stepped flow bore 37 facing away from the lower pole end 13.
  • a lower end 79, facing the lower pole end 13 of the inner pole 3, of a carrier part 83 of the fuel filter 71 which supports the filter fabric is connected to a throttle body 81 which extends in the direction of the longitudinal valve axis 15 of the return spring 39.
  • the throttle body 81 can be designed, for example, as a plastic component and can also be molded onto the carrier part 83 of the fuel filter 71 by injection molding, and can be produced easily and inexpensively in this way.
  • the throttle body 81 has, for example, a frustoconical shape tapering in the direction of flow, ie facing the valve seat 31. In addition to this shape, the throttle body 81 can, for example, also have the shape of a tetrahedron, a pyramid or another shape, which preferably tapers in the direction of fuel flow.
  • the adjusting bush 41 has a cylindrical longitudinal opening 85 which extends in the flow direction of the fuel concentrically to the valve longitudinal axis 15 and through which the fuel flows in the direction of the valve seat 31 of the fuel injection valve.
  • the throttle body 81 tapering in the shape of a truncated cone protrudes, for example, partially into the longitudinal opening 85 of the adjusting bush 41, so that a throttle device 87 is formed between the circumference of the throttle body 81 and the wall of the longitudinal opening 85.
  • the throttle device 87 has a narrow, ring-shaped free flow cross-section 89, which at its narrowest point in the area of an upper end face 91 of the adjusting bush 41 facing the fuel filter 71 serves for metering the fuel and the cross-sectional area of which is the static fuel quantity of the fuel injection valve which is released during the stationary opening state influenced.
  • the actual amount of delivered fuel is measured with the fuel injector fully open, for example by means of a fuel line 95 and a fuel collecting vessel 97, on the otherwise fully assembled fuel injector.
  • the spray openings 33 in the fuel injector shown, for example, have such large opening cross sections that the actual amount of fuel dispensed is always greater than the predetermined static target amount.
  • the insertion depth of the fuel filter 71 in the flow bore 37 of the inner pole 3 and thus the depth to which the throttle body 81, which tapers in the shape of a truncated cone in the direction of flow, protrudes into the longitudinal opening 85 of the adjusting bush 41, is so long using a tool 99 varies until the narrow, fuel-metering free flow cross-section 89 on the upper end face 91 of the adjusting bush 41 has changed between the circumference of the throttle body 81 and the wall of the longitudinal opening 85 of the adjusting bush 41 in such a way that the actual quantity dispensed with the predetermined static target quantity of Fuel matches.
  • the throttle device 87 is formed between the throttle body 81 and the wall of the stepped flow bore 37 of the inner pole 3.
  • the method according to the invention has the advantage that the static amount of fuel delivered during the stationary opening state can be set directly on an otherwise fully assembled fuel injector. This not only minimizes the spread of the static fuel quantities of the individual fuel injectors, but also achieves a reduction in manufacturing costs.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Procédé pour régler le débit statique de carburant d'un injecteur de carburant, délivré pendant la position stationnaire d'ouverture, injecteur qui présente un corps de fermeture de l'injecteur (53) se trouvant dans un canal d'écoulement, coopérant avec un siège de l'injecteur (31) et un dispositif d'étranglement (87) disposé en amont du siège de l'injecteur (31), servant au dosage du carburant, procédé caractérisé en ce que dans une première séquence on mesure sur l'injecteur de carburant par ailleurs monté et prêt à fonctionner le débit réel du carburant délivré quand l'injecteur de carburant est complètement ouvert et on le compare à un débit de consigne prédéfini et dans une seconde séquence on modifie la section transversale libre d'écoulement (89) du dispositif d'étranglement (87) jusqu'à ce que le débit réel coïncide avec le débit prédéfini de consigne du carburant.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on fait varier la section libre d'écoulement (89) du dispositif d'étranglement (87) de façon continue.
  3. Procédé selon la revendication 1 ou 2, dans lequel l'injecteur de carburant a un pôle intérieur en forme de tube (3) avec un alésage d'écoulement (37) s'étendant de façon concentrique à un axe longitudinal de l'injecteur (15) et un corps d'étranglement (81), procédé caractérisé en ce que la section transversale d'écoulement (89) du dispositif d'étranglement (87) est modifiée en faisant varier la profondeur d'enfoncement du corps d'étranglement (81) dans l'alésage d'écoulement (37).
  4. Injecteur de carburant avec un corps de fermeture de l'injecteur (53) coopérant avec un siège de l'injecteur (31) et se trouvant dans un canal d'écoulement et avec un dispositif d'étranglement (87) disposé en amont du siège de l' injecteur (31), servant au dosage du carburant, en particulier à la mise en oeuvre du procédé selon l'une des revendications 1 à 3, injecteur caractérisé en ce que la section transversale libre d'écoulement (89) du dispositif d'étranglement (87) peut être modifiée sur l'injecteur de carburant par ailleurs monté et prêt à fonctionner.
  5. Injecteur de carburant selon la revendication 4, caractérisé en ce que la section transversale d'écoulement (89) du dispositif d'étranglement (87) peut être modifiée de façon continue.
  6. Injecteur de carburant selon la revendication 4 ou 5, avec un pôle intérieur en forme de tuyau (3) qui a un alésage d'écoulement (37) s'étendant de façon concentrique à un axe longitudinal de l'injecteur (15) et avec un corps d'étranglement (81), injecteur caractérisé en ce que la section transversale libre d'écoulement (89) du dispositif d'étranglement (87) peut être modifiée en faisant varier la profondeur d'enfoncement du corps d'étranglement (81) dans l'alésage d'écoulement (37) du pôle intérieur (3).
  7. Injecteur de carburant selon la revendication 6, avec un filtre de carburant (71) disposé dans l'alésage d'écoulement (37) du pôle intérieur (3), injecteur caractérisé en ce que le corps d'étranglement (81) est relié au filtre de carburant (71).
  8. Injecteur de carburant selon la revendication 7, avec une douille de réglage (41) de forme tubulaire disposée dans l'alésage de passage (37) du pôle intérieur (3), douille qui présente une ouverture longitudinale (85) et est disposée en aval du filtre de carburant (71), injecteur caractérisé en ce que le corps d'étranglement (81) pénètre dans l'ouverture longitudinale (85) de la douille de réglage (41).
  9. Injecteur de carburant selon la revendication 6, 7 ou 8, caractérisé en ce que le corps d'étranglement (81) va en se rétrécissant dans le sens de l'écoulement de carburant.
EP92110520A 1991-07-18 1992-06-23 Procédé d'ajustement d'une soupape d'injection de combustible et soupape d'injection de combustible Expired - Lifetime EP0523405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4123787A DE4123787A1 (de) 1991-07-18 1991-07-18 Verfahren zur einstellung eines brennstoffeinspritzventils und brennstoffeinspritzventil
DE4123787 1991-07-18

Publications (3)

Publication Number Publication Date
EP0523405A2 EP0523405A2 (fr) 1993-01-20
EP0523405A3 EP0523405A3 (en) 1993-08-04
EP0523405B1 true EP0523405B1 (fr) 1994-10-26

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EP92110520A Expired - Lifetime EP0523405B1 (fr) 1991-07-18 1992-06-23 Procédé d'ajustement d'une soupape d'injection de combustible et soupape d'injection de combustible

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Country Link
US (1) US5383606A (fr)
EP (1) EP0523405B1 (fr)
JP (1) JPH05195912A (fr)
DE (2) DE4123787A1 (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310819A1 (de) * 1993-04-02 1994-10-06 Bosch Gmbh Robert Verfahren zur Einstellung eines Ventils
US5494223A (en) * 1994-08-18 1996-02-27 Siemens Automotive L.P. Fuel injector having improved parallelism of impacting armature surface to impacted stop surface
DE4433543C1 (de) * 1994-09-20 1995-12-21 Sonplas Gmbh Planung Montage U Verfahren zur Einstellung und Überprüfung des Durchflusses bei Ventilen
JPH08189439A (ja) * 1994-12-28 1996-07-23 Zexel Corp 電磁式燃料噴射弁およびそのノズルアッシィ組付け方法
US5577663A (en) * 1995-05-19 1996-11-26 Siemens Automotive Corporation Bottom feed injector with top calibration feed
GB9609384D0 (en) * 1996-05-03 1996-07-10 Lucas Ind Plc Apparatus for controlling calibration of a flow control device
US5918818A (en) * 1996-05-22 1999-07-06 Denso Corporation Electromagnetically actuated injection valve
JPH10196488A (ja) * 1997-01-08 1998-07-28 Aisan Ind Co Ltd 電磁式燃料噴射弁
DE19725198A1 (de) * 1997-06-14 1998-12-17 Bosch Gmbh Robert Brennstoffeinspritzventil
US6328231B1 (en) 1998-05-27 2001-12-11 Siemens Automotive Corporation Compressed natural gas injector having improved low noise valve needle
US6508418B1 (en) 1998-05-27 2003-01-21 Siemens Automotive Corporation Contaminant tolerant compressed natural gas injector and method of directing gaseous fuel therethrough
US6334580B2 (en) 1999-05-26 2002-01-01 Siemens Automotive Corporation Gaseous injector with columnated jet oriface flow directing device
US6431474B2 (en) 1999-05-26 2002-08-13 Siemens Automotive Corporation Compressed natural gas fuel injector having magnetic pole face flux director
US6405947B2 (en) 1999-08-10 2002-06-18 Siemens Automotive Corporation Gaseous fuel injector having low restriction seat for valve needle
US6422488B1 (en) * 1999-08-10 2002-07-23 Siemens Automotive Corporation Compressed natural gas injector having gaseous dampening for armature needle assembly during closing
JP3795724B2 (ja) * 2000-03-13 2006-07-12 株式会社デンソー 燃料噴射装置及びその噴射特性調整方法
US6523759B1 (en) * 2000-06-27 2003-02-25 Siemens Automotive Corporation Adjustable anti-bounce armature disk
DE10037571A1 (de) 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
DE10037570A1 (de) * 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
DE10122353B4 (de) * 2001-05-09 2004-04-22 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10130239A1 (de) 2001-06-22 2003-01-02 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
JP3841054B2 (ja) * 2002-08-08 2006-11-01 株式会社デンソー フィルタおよびそれを用いた燃料噴射装置
JP3975352B2 (ja) * 2002-10-30 2007-09-12 株式会社デンソー 噴射装置の動的流量調整方法
US7128281B2 (en) 2004-06-03 2006-10-31 Siemens Vdo Automotive Corporation Modular fuel injector with a damper member and method of reducing noise
EP1741925A1 (fr) * 2005-07-05 2007-01-10 Siemens Aktiengesellschaft Soupape d'injection de fluide
US7942132B2 (en) 2008-07-17 2011-05-17 Robert Bosch Gmbh In-line noise filtering device for fuel system
JP2010151082A (ja) * 2008-12-26 2010-07-08 Denso Corp 燃料噴射弁
DE102015217673A1 (de) 2015-09-15 2017-03-16 Continental Automotive Gmbh Einspritzvorrichtung zur Zumessung eines Fluids und Kraftfahrzeug mit einer derartigen Einspritzvorrichtung
US10502112B2 (en) * 2017-09-14 2019-12-10 Vitesco Technologies USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
US10947880B2 (en) 2018-02-01 2021-03-16 Continental Powertrain USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540660A (en) * 1967-10-27 1970-11-17 Atom Auto Pecas Ltda Fuel inlet vaporizers for carburators
FR2190167A5 (fr) * 1972-06-23 1974-01-25 Sopromi Soc Proc Modern Inject
FR2323027A1 (fr) * 1975-09-05 1977-04-01 Renault Installation pour le reglage industriel d'injecteur de carburant
US4281797A (en) * 1978-07-26 1981-08-04 Ntn Toyo Bearing Company, Limited Fuel injection device for internal combustion engines
JPS6042351B2 (ja) * 1978-11-07 1985-09-21 株式会社豊田中央研究所 還流式渦巻噴射弁
JPS5681255A (en) * 1979-12-07 1981-07-03 Japan Electronic Control Syst Co Ltd Valve opening regulator for fuel injection valve device
DE3237932A1 (de) * 1982-10-13 1984-04-19 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
DD217249A1 (de) * 1983-08-22 1985-01-09 Seghers A Mikroelektronik Veb Verfahren und vorrichtung zum selektiven elektrolytischen strippen abgeschiedener metallteile
DE3533521A1 (de) * 1985-09-20 1987-04-02 Bosch Gmbh Robert Elektromagnetisch betaetigbares kraftstoffeinspritzventil
US4778107A (en) * 1986-08-21 1988-10-18 Nippondenso Co., Ltd. Fuel injection valve assembly and an assembling method therefor
DE3735526C2 (de) * 1986-10-24 1999-01-21 Denso Corp Elektromagnetisches Kraftstoffeinspritzventil
US5156342A (en) * 1986-10-24 1992-10-20 Nippondenso Co. Ltd. Electromagnetic fuel injection valve for internal combustion engine
DE3640830C2 (de) * 1986-11-28 1996-02-22 Bosch Gmbh Robert Kraftstoffeinspritzventil
DE8632002U1 (de) * 1986-11-28 1988-03-31 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzventil
IT1226476B (it) * 1987-03-12 1991-01-16 Weber Srl Procedimento ed apparecchiatura per realizzare valvole di iniettori per motori a combustione interna ad accensione comandata
DE3864772D1 (de) * 1987-07-21 1991-10-17 Nippon Denso Co Verfahren zum einstellen der brennstoffeinspritzmenge eines elektromagnetischen brennstoffeinspritzventils.
DE3803436A1 (de) * 1988-02-05 1989-08-17 Pierburg Gmbh Verfahren und vorrichtung zum ermitteln der anzugs- und abfallzeit des stoessels eines elektromagnetischen einspritzventils
DE3831196A1 (de) * 1988-09-14 1990-03-22 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4025945C2 (de) * 1990-08-16 1998-10-08 Bosch Gmbh Robert Verfahren zur Einstellung eines Brennstoffeinspritzventils und Brennstoffeinspritzventil
DE4109868A1 (de) * 1991-03-26 1992-10-01 Bosch Gmbh Robert Einstellbuchse fuer ein elektromagnetisch betaetigbares ventil und verfahren zur herstellung

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Publication number Publication date
EP0523405A3 (en) 1993-08-04
DE59200686D1 (de) 1994-12-01
US5383606A (en) 1995-01-24
EP0523405A2 (fr) 1993-01-20
DE4123787A1 (de) 1993-01-21
JPH05195912A (ja) 1993-08-06

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