EP0685643A2 - Pointeau pour une soupape à commande électromagnétique - Google Patents

Pointeau pour une soupape à commande électromagnétique Download PDF

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Publication number
EP0685643A2
EP0685643A2 EP95105247A EP95105247A EP0685643A2 EP 0685643 A2 EP0685643 A2 EP 0685643A2 EP 95105247 A EP95105247 A EP 95105247A EP 95105247 A EP95105247 A EP 95105247A EP 0685643 A2 EP0685643 A2 EP 0685643A2
Authority
EP
European Patent Office
Prior art keywords
section
valve
valve needle
armature
closing member
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.)
Granted
Application number
EP95105247A
Other languages
German (de)
English (en)
Other versions
EP0685643B1 (fr
EP0685643A3 (fr
Inventor
Bernhard Dipl.-Ing. Just
Ferdinand Dipl.-Ing. Reiter (Ba)
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 EP0685643A2 publication Critical patent/EP0685643A2/fr
Publication of EP0685643A3 publication Critical patent/EP0685643A3/fr
Application granted granted Critical
Publication of EP0685643B1 publication Critical patent/EP0685643B1/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
    • 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
    • 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
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8046—Fuel injection apparatus manufacture, repair or assembly the manufacture involving injection moulding, e.g. of plastic or metal
    • 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 relates to a valve needle for an electromagnetically actuated valve according to the preamble of the main claim.
  • a valve needle for an electromagnetically actuated valve is already known, which consists of an armature section, a valve closing member section and a tubular valve sleeve section connecting the armature section with the valve closing member section.
  • the individual sections represent separate parts manufactured separately from one another, which are only connected to one another using joining processes.
  • valve needle for an electromagnetically actuated valve which consists of an armature section, a valve closing member section and a valve sleeve section connecting the armature section with the valve closing member section.
  • the armature section is connected to one end of the valve sleeve section by means of a first welded connection and the valve closing member section is connected to the other end of the Valve sleeve section connected by a second weld.
  • Two welding operations are therefore required to produce the valve needle, which lead to a relatively complex and expensive manufacture of the valve needle.
  • a valve needle for an electromagnetically actuated valve consists of a one-piece tubular actuating part consisting of an armature section and a valve sleeve section by injection molding and subsequent sintering according to the metal injection molding process (MIM). to manufacture.
  • the actuating part is then connected to a valve closing element section by means of a welded connection.
  • a continuous inner longitudinal opening is provided in the armature section and valve sleeve section, in which fuel can flow in the direction of the valve closing member section, which then emerges from the valve sleeve section through transverse openings near the valve closing section.
  • valve needle according to the invention with the characterizing features of the main claim has the advantage that it can be produced in a particularly simple and inexpensive manner.
  • the "valve sleeve section" is no longer a sleeve, but is rather solid as a valve needle section between the armature section and valve closing member section, so that the tool for producing the armature section and valve needle section Actuating part can be constructed very simply, since no cross slide tools are required to create cross openings. This completely eliminates the risk of burrs that previously existed in the transverse openings due to production.
  • At least two axially extending flow channels in the interior of the armature section ensure that the fuel flows freely in the direction of the valve seat. The fuel emerging from the flow channels can flow along the outer circumference of the valve needle section without deflections.
  • valve needle is obtained when it is manufactured with the armature section, the valve needle section and the valve closing member section as a molded part according to the metal injection molding process.
  • FIG. 1 shows a fuel injector with a valve needle according to the invention
  • FIG. 2 shows a plan view of the valve needle
  • FIG. 3 shows a section along the line III-III in FIG. 2
  • FIG. 4 shows a section along the line IV-IV in FIG. 2.
  • the electromagnetically actuated valve shown in FIG. 1, for example, in the form of an injection valve for fuel injection systems of mixed-compression spark-ignition internal combustion engines has a core 2, which is surrounded by a magnet coil 1 and serves as a fuel inlet connector.
  • the magnet coil 1 with a coil body 3 is, for. B. with a plastic extrusion 5, at the same time an electrical connector 6 is molded.
  • a tubular, metallic intermediate part 12 is connected, for example by welding, concentrically to a longitudinal valve axis 11 and partially overlaps the core end 10 axially.
  • the intermediate part 12 is at its core 2 facing away End provided with a lower cylinder section 18 which engages over a tubular nozzle carrier 19 and is tightly connected thereto, for example by welding.
  • a cylindrical valve seat body 21 is tightly mounted by welding in a through hole 20 which runs concentrically to the valve longitudinal axis 11.
  • the valve seat body 21 has the solenoid 1 facing a fixed valve seat 22, downstream of which in the valve seat body 21 z. B. two spray openings 23 are formed. Downstream of the spray openings 23, the valve seat body 21 has a treatment bore 24 which widens in the shape of a truncated cone in the flow direction.
  • a tubular adjusting bushing 27 is pressed into a stepped flow bore 25 of the core 2 that runs concentrically to the valve longitudinal axis 11 in order to adjust the spring force of a return spring 26.
  • the press-in depth of the adjusting bush 27 into the flow bore 25 of the core 2 determines the spring force of the return spring 26 and thus also influences the dynamic fuel quantity emitted during the opening and closing stroke of the valve.
  • the return spring 26 With its end facing away from the adjusting bush 27, the return spring 26 is supported on a holding shoulder 30 of an actuating part 32 arranged concentrically to the longitudinal valve axis 11, while the return spring 26 rests with its other end on a lower end face 28 of the adjusting bush 27.
  • the actuating part 32 is part of a valve needle 34 and itself consists of an armature section 36 facing the core 2 and interacting with the core 2 and the magnet coil 1 and a solid valve needle section 38 extending towards the valve seat body 21 Arranged downstream of the valve needle section 38, for example spherical valve closing member section 46, the actuating part 32 forms the valve needle 34.
  • the spherical valve closing member section 46 is, for example, firmly and tightly connected to the actuating part 32 by means of a welded connection 48 achieved by laser welding.
  • valve needle section 38 of the actuating part 32 has at its downstream end facing away from the holding shoulder 30 an end-side, for example conical or spherical, spherical-shaped contact surface 49
  • Valve needle section 38 and the valve closing member section 46 generally have a smaller diameter than the armature section 36.
  • The, for example, spherical valve closing member section 46 has z. B. four circular flats 50, which facilitate the flow of fuel in the direction of the valve seat 22 of the valve seat body 21.
  • the actuating part 32 is explained in more detail below with reference to FIGS. 2 to 4.
  • the magnet coil 1 is at least partially surrounded by at least one guiding element 40, which is designed as a bracket and serves as a ferromagnetic element, which bears with its one end on the core 2 and with its other end on the nozzle carrier 19 and with these z. B. is connected by welding or soldering. A part of the valve is enclosed by a plastic sheath 41, which extends from the core 2 in the axial direction over the magnet coil 1 with connector 6 and the at least one guide element 40.
  • the actuating part 32 consisting of the armature section 36 and the valve needle section 38 and optionally also the valve closing member section 46 of the valve needle 34 are produced by injection molding and subsequent sintering.
  • the already known and also referred to as metal injection molding (MIM) process comprises the production of molded parts from a metal powder with a binder, for. B. a plastic binder, for example on conventional plastic injection molding machines and the subsequent removal of the binder and sintering the remaining metal powder structure.
  • the composition of the metal powder can be matched in a simple manner to optimal magnetic properties of the actuating part 32 consisting of the armature section 36 and the valve needle section 38 or the valve closing member section 46.
  • FIG. 2 shows a top view of the actuating part 32 or the armature section 36 from an upstream end face 53 facing the core 2.
  • This top view clearly shows that the holding shoulder 30, which is axially lower than the end face 53 and has a smaller diameter than the end face 53, for supporting the return spring 26 is interrupted by, for example, three or four axial grooves 55 running axially, i.e. in the direction of the valve longitudinal axis 11 is.
  • the return spring 26 is consequently only in contact with the regions of the holding shoulder 30 which remain annular between the axial grooves 55.
  • the axial grooves 55 extend over the entire remaining length of the armature section 36 and serve to allow the fuel coming from the flow bore 25 of the core 2 to flow unhindered in the direction of the valve seat 22.
  • FIGS. 3 and 4 are representations of sections along the lines III-III and IV-IV in FIG. 2, FIG. 3 showing a section that runs through the solid material from the holding shoulder 30 in the axial direction of the anchor section 36, and FIG. 4 illustrates a section through two axial grooves 55 in the armature section 36.
  • a central inner, blind hole-like recess 57 extends, for example, with the same diameter as the solid valve needle section 38, starting from the holding shoulder 30 in the anchor section 36 downstream to an end face 56 of the valve needle section 38 opposite the contact surface 49 and is directly connected to the axial grooves 55.
  • the valve needle section 38 projects partially into the armature section 36, i. H.
  • the upstream end face 56 of the valve needle section 38 facing the holding shoulder 30 lies further upstream than a shoulder 58, which results on the outer contour of the actuating part 32, from the armature section 36 to the valve needle section 38, at which the axial grooves 55 end.
  • the axial grooves 55 no longer represent grooves, but due to the complete material encapsulation, axial flow channels 60 adjoining one another in alignment partially as a wall film of the valve needle section 38, since the inner boundary of each flow channel 60 is given by the valve needle section 38.
  • the injection point 62 during injection molding of the actuating part 32 can be provided such that it lies in a recess 61 at the downstream end of the actuating part 32.
  • the valve closing member section 46 Before the valve closing member section 46 is attached, it must then not be removed, which guarantees a cost reduction. Rather, after the spherical valve closing member section 46 has been welded onto the contact surface 49 of the actuating part 32, the depression 61 with the injection point 62 is hermetically sealed, so that there are no negative effects from this area.
  • the MIM method can be used even more easily if, instead of already known tubular actuation parts, the actuation parts 32 according to the invention are produced with a solid valve needle section 38. The introduction of transverse openings in the region of the valve needle section 38 is in fact completely eliminated.
  • valve needle 34 with the armature section 36, valve needle section 38 and valve closing member section 46 is produced as a molded part according to the metal injection molding method. This eliminates the need to weld the valve closing member section 46 to the valve needle section 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
EP95105247A 1994-05-05 1995-04-07 Pointeau pour une soupape à commande électromagnétique Expired - Lifetime EP0685643B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4415850A DE4415850A1 (de) 1994-05-05 1994-05-05 Ventilnadel für ein elektromagnetisch betätigbares Ventil
DE4415850 1994-05-05

Publications (3)

Publication Number Publication Date
EP0685643A2 true EP0685643A2 (fr) 1995-12-06
EP0685643A3 EP0685643A3 (fr) 1997-05-02
EP0685643B1 EP0685643B1 (fr) 2001-09-12

Family

ID=6517355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105247A Expired - Lifetime EP0685643B1 (fr) 1994-05-05 1995-04-07 Pointeau pour une soupape à commande électromagnétique

Country Status (5)

Country Link
US (1) US5632467A (fr)
EP (1) EP0685643B1 (fr)
JP (1) JPH07301357A (fr)
DE (2) DE4415850A1 (fr)
ES (1) ES2164115T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2077389A1 (fr) * 2006-09-25 2009-07-08 Hitachi CO., LTD. Soupape d'injection de carburant
US8505835B2 (en) 2005-11-02 2013-08-13 Robert Bosch Gmbh Fuel injector
CN103733279A (zh) * 2011-08-09 2014-04-16 罗伯特·博世有限公司 用于喷射阀的衔铁
WO2019137679A1 (fr) * 2018-01-11 2019-07-18 Robert Bosch Gmbh Vanne de dosage d'un fluide, en particulier injecteur de carburant

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420176A1 (de) * 1994-06-09 1995-12-14 Bosch Gmbh Robert Ventilnadel für ein elektromagnetisch betätigbares Ventil
JPH10196488A (ja) * 1997-01-08 1998-07-28 Aisan Ind Co Ltd 電磁式燃料噴射弁
DE19702066C2 (de) * 1997-01-22 1998-10-29 Daimler Benz Ag Piezoelektrischer Injektor für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
JP3933739B2 (ja) * 1997-01-30 2007-06-20 三菱電機株式会社 燃料噴射弁
JP3518966B2 (ja) * 1997-01-30 2004-04-12 三菱電機株式会社 筒内噴射用燃料噴射弁
DE19739150A1 (de) * 1997-09-06 1999-03-11 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
US6489870B1 (en) 1999-11-22 2002-12-03 Tlx Technologies Solenoid with improved pull force
US6392516B1 (en) * 1998-12-04 2002-05-21 Tlx Technologies Latching solenoid with improved pull force
US6431474B2 (en) 1999-05-26 2002-08-13 Siemens Automotive Corporation Compressed natural gas fuel injector having magnetic pole face flux director
US6089467A (en) * 1999-05-26 2000-07-18 Siemens Automotive Corporation Compressed natural gas injector with gaseous damping for armature needle assembly during opening
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
US6799733B1 (en) 2000-06-28 2004-10-05 Siemens Automotive Corporation Fuel injector having a modified seat for enhanced compressed natural gas jet mixing
JP3734702B2 (ja) * 2000-10-17 2006-01-11 株式会社日立製作所 電磁式燃料噴射弁
US6631857B2 (en) * 2000-12-22 2003-10-14 Caterpillar Inc Partially plastic fuel injector component and method of making the same
US7066199B1 (en) 2002-04-03 2006-06-27 Hydro-Gear Limited Partnership Valve assembly
US6964280B1 (en) 2002-04-03 2005-11-15 Hydro-Gear Limited Partnership Valve assembly for use in a hydraulic component
US6691512B1 (en) 2002-04-03 2004-02-17 Hydro-Gear Limited Partnership Hydraulic transmission with combination check valve and pressure release valve
US6719005B1 (en) 2002-04-03 2004-04-13 Hydro-Gear, Limited Partnership Combination check valve and pressure release valve
US6761182B1 (en) * 2002-04-03 2004-07-13 Hydro-Gear Limited Partnership Method for configuration of a valve
US6986363B1 (en) 2002-04-03 2006-01-17 Hydro-Gear Limited Partnership Valve assembly for use in a hydraulic component
US7320334B1 (en) * 2002-04-03 2008-01-22 Hydro-Gear Limited Partnership Valve Assembly
DE10215939C1 (de) * 2002-04-11 2003-08-21 Ina Schaeffler Kg Elektromagnetisches Hydtaulikventil, insbesondere Proportionalventil zur Steuerung einer Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle einer Brennkraftmaschine, sowie Verfahren zu dessen Herstellung
DE10261610A1 (de) * 2002-12-27 2004-07-08 Robert Bosch Gmbh Ventil zum Steuern eines Fluids
US7028708B1 (en) 2003-05-09 2006-04-18 Hydro-Gear Limited Partnership Combined check valve and pressure relief valve
US6935454B1 (en) 2003-09-18 2005-08-30 Hydro-Gear Limited Partnership Valve for a hydraulic drive apparatus
US7316114B1 (en) 2003-09-18 2008-01-08 Hydro-Gear Limited Partnership Valve for a hydraulic drive apparatus
DE102004058803A1 (de) 2004-12-07 2006-06-08 Robert Bosch Gmbh Einspritzventil
US7296594B1 (en) 2005-03-22 2007-11-20 Hydro-Gear Limited Partnership Combination check valve and neutral valve assembly for use in a hydraulic component
US20070069172A1 (en) * 2005-04-26 2007-03-29 Parker-Hannifin Corporation Magnetic repulsion actuator and method
US7178787B2 (en) * 2005-05-05 2007-02-20 Trw Automotive U.S. Llc Valve assembly
US7451780B1 (en) 2005-05-16 2008-11-18 Hydro-Gear Limited Partnership Multifunction valve for use in a hydraulic component
DE102005023369B4 (de) * 2005-05-20 2017-07-13 Continental Automotive Gmbh Einspritzventil und Düsennadel für das Einspritzventil
US7673847B2 (en) * 2005-09-21 2010-03-09 Aisan Kogyo Kabushiki Kaisha Fluid control valve for supplying gas to a fuel cell in a vehicle
DE102006020689A1 (de) * 2006-05-04 2007-11-08 Robert Bosch Gmbh Magnetventil mit stoffschlüssiger Ankerverbindung
EP2067982B1 (fr) * 2006-09-25 2013-01-16 Hitachi Ltd. Soupape d'injection de carburant
CN102094736B (zh) * 2006-09-25 2012-09-05 株式会社日立制作所 燃料喷射阀
DE102007062182A1 (de) 2007-12-21 2009-06-25 Robert Bosch Gmbh Einspritzventil zum Abspritzen eines Fluids
DE102008010976A1 (de) * 2008-02-25 2009-08-27 Robert Bosch Gmbh Verfahren zum Richten eines langgestreckten Bauteils
US20100155510A1 (en) * 2008-12-22 2010-06-24 Bamber Daniel W Nozzle trumpet
DE102009055133A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Polkern für Magnetventile hergestellt mittels Mehrstoff-MIM
JP5862941B2 (ja) * 2011-11-08 2016-02-16 株式会社デンソー 燃料噴射弁
DE102012223552A1 (de) 2012-12-18 2014-06-18 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
JP6139191B2 (ja) * 2013-03-14 2017-05-31 日立オートモティブシステムズ株式会社 電磁式燃料噴射弁
JP6187563B2 (ja) * 2015-09-28 2017-08-30 株式会社デンソー 燃料噴射弁

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Publication number Priority date Publication date Assignee Title
FR789833A (fr) * 1935-05-08 1935-11-07 Injecteur pour moteur à combustion interne
DE3711850A1 (de) * 1987-04-08 1988-10-27 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE3933331A1 (de) * 1989-10-06 1991-04-11 Bosch Gmbh Robert Kraftstoffeinspritzventil fuer kraftstoffeinspritzanlagen von brennkraftmaschinen
JPH04187863A (ja) * 1990-11-20 1992-07-06 Nippondenso Co Ltd 電磁式燃料噴射弁
DE4230376C1 (fr) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De

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US4483485A (en) * 1981-12-11 1984-11-20 Aisan Kogyo kabuskiki Kaisha Electromagnetic fuel injector
DE3439672A1 (de) * 1984-10-30 1986-04-30 Pierburg Gmbh & Co Kg, 4040 Neuss Elektromagnetisch getaktetes einspritzventil fuer gemischverdichtende brennkraftmaschinen
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
FR789833A (fr) * 1935-05-08 1935-11-07 Injecteur pour moteur à combustion interne
DE3711850A1 (de) * 1987-04-08 1988-10-27 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE3933331A1 (de) * 1989-10-06 1991-04-11 Bosch Gmbh Robert Kraftstoffeinspritzventil fuer kraftstoffeinspritzanlagen von brennkraftmaschinen
JPH04187863A (ja) * 1990-11-20 1992-07-06 Nippondenso Co Ltd 電磁式燃料噴射弁
DE4230376C1 (fr) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De

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Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8505835B2 (en) 2005-11-02 2013-08-13 Robert Bosch Gmbh Fuel injector
EP2077389A1 (fr) * 2006-09-25 2009-07-08 Hitachi CO., LTD. Soupape d'injection de carburant
EP2077389A4 (fr) * 2006-09-25 2011-10-12 Hitachi Ltd Soupape d'injection de carburant
CN103733279A (zh) * 2011-08-09 2014-04-16 罗伯特·博世有限公司 用于喷射阀的衔铁
US9309847B2 (en) 2011-08-09 2016-04-12 Robert Bosch Gmbh Armature for a fuel injector
WO2019137679A1 (fr) * 2018-01-11 2019-07-18 Robert Bosch Gmbh Vanne de dosage d'un fluide, en particulier injecteur de carburant

Also Published As

Publication number Publication date
ES2164115T3 (es) 2002-02-16
EP0685643B1 (fr) 2001-09-12
DE59509585D1 (de) 2001-10-18
EP0685643A3 (fr) 1997-05-02
DE4415850A1 (de) 1995-11-09
US5632467A (en) 1997-05-27
JPH07301357A (ja) 1995-11-14

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