EP0612375B1 - Ventilnadel für ein elektromagnetisch betätigbares ventil und verfahren zur herstellung - Google Patents

Ventilnadel für ein elektromagnetisch betätigbares ventil und verfahren zur herstellung Download PDF

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Publication number
EP0612375B1
EP0612375B1 EP93918902A EP93918902A EP0612375B1 EP 0612375 B1 EP0612375 B1 EP 0612375B1 EP 93918902 A EP93918902 A EP 93918902A EP 93918902 A EP93918902 A EP 93918902A EP 0612375 B1 EP0612375 B1 EP 0612375B1
Authority
EP
European Patent Office
Prior art keywords
valve
section
armature
needle
closing element
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
EP93918902A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0612375A1 (de
Inventor
Peter Romann
Ferdinand Reiter
Martin Maier
Thomas Naeger
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 EP0612375A1 publication Critical patent/EP0612375A1/de
Application granted granted Critical
Publication of EP0612375B1 publication Critical patent/EP0612375B1/de
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
    • 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
    • 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

Definitions

  • the invention is based on a valve needle for an electromagnetically actuated valve and on a method for producing a valve needle according to the preamble of claim 1 and claim 4.
  • a 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 to the valve closing member section.
  • the armature section is made as one part with the valve sleeve section by means of a metal injection molding process, while the valve closing member section is connected to the valve sleeve section by means of a clamp connection or a welded connection.
  • valve needle To produce the valve needle, two operations are required, which lead to a relatively complex and expensive manufacture of the valve needle.
  • valve needle which is manufactured by machining methods as a part with an armature section, a valve sleeve section and a valve closing member section.
  • valve needle according to the invention with the features of claim 1 and the method according to the invention with the features of claim 4 have the advantage that such a valve needle can be produced in a simple and inexpensive manner.
  • the composition of the metal powder used can easily be matched to optimal magnetic properties of the armature section.
  • valve sleeve section tapers in the direction of the valve closing member section, starting from the anchor section.
  • valve sleeve section which extend in the direction of the valve longitudinal axis, so that the flow through the longitudinal opening of the valve sleeve section is not impeded.
  • the molded part is hot isostatically pressed after sintering, so that a particularly dense structure of the valve needle results.
  • FIG. 1 shows a fuel injector with a 2 shows a valve needle known in its two-part form
  • FIG. 3 shows a valve needle according to the present invention
  • FIG. 4 shows a manufacturing method of a valve needle according to the invention.
  • the electromagnetically actuated valve for example shown in FIG. 1, 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 e.g. provided with a plastic extrusion 5, wherein at the same time an electrical connector 6 is also molded.
  • a tubular, metallic intermediate part 12 is tightly connected, for example by welding, concentrically to a longitudinal valve axis 11 and overlaps the core end 10 partially axially with an upper cylinder section 14.
  • the coil former 3 partially overlaps the core 2 and the upper cylinder section 14 of the intermediate part 12.
  • the intermediate part 12 is provided at its end facing away from the core 2 with a lower cylinder section 18 which overlaps 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 bore 20 running concentrically to the valve longitudinal axis 11.
  • the valve seat body 21 has a fixed valve seat 22 facing the magnet coil 1, downstream of it For example, two spray openings 23 are formed in the valve seat body 21. 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 return spring 26 rests with one end on a lower end face 28 of the adjusting bushing 27 facing the valve seat body 21.
  • the press-in depth of the adjusting bushing 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 a tubular, e.g. from actuating part 32 arranged concentrically to valve longitudinal axis 11.
  • the actuating part 32 has a longitudinal opening 34 which, facing the core 2, merges into the holding shoulder 30.
  • a valve needle 58 which partially deviates from that shown in FIG. 1, is shown in FIG.
  • the tubular actuating part 32 consists of a tubular armature section 36, which faces the core 2 and cooperates with the core 2 and the magnetic coil 1, and a tubular valve sleeve section 38 which faces the valve seat body 21. Near its end 39, which faces away from the armature section 35, is in the longitudinal opening 34 of the actuating part 32 a bottom 40 is formed.
  • the bottom 40 divides the longitudinal opening 34 of the actuating part 32 into a blind-shaped flow section 42 facing the core 2, which forms an extension of the flow bore 25 of the core 2, and one in comparison to the flow section 42 has only a small axial extent blind hole section 44.
  • the actuating part 32 is connected to an eg spherical valve closing member section 46 by means of a welded connection 48.
  • the valve sleeve section 38 of the actuating part 32 has at its end 39 facing away from the holding shoulder 30 an end-side, for example dome-shaped contact surface 49 generally a smaller diameter than the armature section 36.
  • The, for example, spherical valve closing member section 46 has, for example, four flattened areas 50 on its circumference, which facilitate the flow of fuel in the direction of the valve seat 22 of the valve seat body 21.
  • a cavity 52 is formed, in which the welding spatter formed during the production of the welded connection 48, for example by means of laser welding, accumulates. These weld spatter cannot escape from the cavity 52 and reach the valve seat 22, for example, so that the function of the valve is not disturbed.
  • a plurality of through openings 56 are provided which pass through the wall of the valve sleeve section 38. These through openings 56 allow the fuel to flow through the flow bore 25 of the core 2 and the longitudinal opening 34 of the actuating part 32 in the direction of the valve seat 22 of the valve seat body 21.
  • the actuating part 32 consisting of the armature section 36 and the valve sleeve section 38 and also the valve closing member section 46 of the valve needle 58 are injection molded and then Sintered.
  • FIG. 4 shows the inventive method for producing a valve needle in a simplified manner.
  • the process which is also known as metal injection molding (MIM), comprises the production of molded parts from a metal powder with a binder, for example a plastic binder, for example on conventional plastic injection molding machines, and the subsequent removal of the binder and sintering of the remaining metal powder structure.
  • MIM metal injection molding
  • 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 valve sleeve section 38 or the valve closing member section 46.
  • the metal powder 61 is mixed with the plastic used as the binder 62 in a mixing device 63 and homogenized. This mixture is now processed into granules in a granulating device 64 and further processed in a manner known per se into a molded part 66 by means of a plastic injection molding machine 65. The components of the plastic binary 62 are then removed from the injection-molded part 66 by thermal methods, for example under the influence of protective gas. The remaining material structure of the molded part 66 now consists of approximately 60 percent by volume of metal.
  • the molded part is sintered, for example, under the influence of protective gas in a sintering device 68.
  • the sintering process can also be carried out under the influence of hydrogen or in a vacuum.
  • the molded part 66 can then be densified by hot isostatic pressing in order to reduce the proportion of pores in the structure of the actuating part 32 or the valve needle 58 to approximately 1%.
  • the magnetic coil 1 is at least partially surrounded by at least one guide element 81, for example in the form of a bracket, which serves as a ferromagnetic element and which bears at one end on the core 2 and at the other end on the nozzle carrier 19 and with these e.g. is connected by welding or soldering.
  • a part of the valve is enclosed by a plastic sheath 83, which extends from the core 2 in the axial direction over the magnetic coil 1 with connector 6 and the at least one guide element 81.
  • the actuating part 32 according to FIG. 2 is designed such that the valve sleeve section 38 tapers from the armature section 36 in the direction of the valve closing member section 46 in the shape of a truncated cone.
  • This conical shape of the valve sleeve section 38 facilitates the demolding of the actuating part 32 from the tools used for its manufacture, for example from a form of the plastic injection molding machine 65 or the sintering device 68.
  • the longitudinal opening 34 of the actuating part 32 there are, for example, four recesses extending in the direction of the valve longitudinal axis 11 85 trained, which allow the weight of the valve needle 58 to be reduced without compromising its mechanical strength.
  • valve needle 58 In the exemplary embodiment of a valve needle 58 according to the invention according to FIG. 3, armature section 36, valve sleeve section 38 and valve closing member section 46 are produced as one part according to the MIM method described above.
  • the longitudinal opening 34 advantageously extends into the valve closing member section 46. Welded connections are not present in the exemplary embodiment according to FIG. 3.
  • the new valve needle with an injection molded section and subsequent sintering, consisting of armature section 36 and valve sleeve section 38 existing actuating part 32 and with the valve closing glide section 46, which is also manufactured at the same time, has the advantage of very simple and inexpensive production, in which the welding operation between the armature section 36 and the valve sleeve section 38 and between the valve sleeve section 38 and the valve closing member section 46 is eliminated.

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)
EP93918902A 1992-09-11 1993-08-20 Ventilnadel für ein elektromagnetisch betätigbares ventil und verfahren zur herstellung Expired - Lifetime EP0612375B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4230376 1992-09-11
DE4230376A DE4230376C1 (nl) 1992-09-11 1992-09-11
PCT/DE1993/000759 WO1994007024A1 (de) 1992-09-11 1993-08-20 Ventilnadel für ein elektromagnetisch betätigbares ventil und verfahren zur herstellung

Publications (2)

Publication Number Publication Date
EP0612375A1 EP0612375A1 (de) 1994-08-31
EP0612375B1 true EP0612375B1 (de) 1997-06-18

Family

ID=6467717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918902A Expired - Lifetime EP0612375B1 (de) 1992-09-11 1993-08-20 Ventilnadel für ein elektromagnetisch betätigbares ventil und verfahren zur herstellung

Country Status (7)

Country Link
US (1) US5566920A (nl)
EP (1) EP0612375B1 (nl)
JP (1) JPH07501377A (nl)
KR (1) KR100292420B1 (nl)
DE (2) DE4230376C1 (nl)
ES (1) ES2103485T3 (nl)
WO (1) WO1994007024A1 (nl)

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230376C1 (nl) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De
DE4408875A1 (de) * 1994-03-16 1995-09-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE4415850A1 (de) * 1994-05-05 1995-11-09 Bosch Gmbh Robert Ventilnadel für ein elektromagnetisch betätigbares Ventil
DE4420176A1 (de) * 1994-06-09 1995-12-14 Bosch Gmbh Robert Ventilnadel für ein elektromagnetisch betätigbares Ventil
DE4421429A1 (de) * 1994-06-18 1995-12-21 Bosch Gmbh Robert Elektromagnetisch betätigbares Brennstoffeinspritzventil
DE4426006A1 (de) * 1994-07-22 1996-01-25 Bosch Gmbh Robert Ventilnadel für ein elektromagnetisch betätigbares Ventil und Verfahren zur Herstellung
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
DE19623581A1 (de) * 1995-07-21 1997-01-23 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
US5704553A (en) * 1995-10-30 1998-01-06 Wieczorek; David P. Compact injector armature valve assembly
JP3933739B2 (ja) * 1997-01-30 2007-06-20 三菱電機株式会社 燃料噴射弁
US6257508B1 (en) * 1997-02-06 2001-07-10 Siemens Automotive Corporation Fuel injector having after-injection reduction arrangement
DE19712922B4 (de) * 1997-03-27 2005-08-11 Robert Bosch Gmbh Brennstoffeinspritzventil
DE19730202A1 (de) * 1997-07-15 1999-01-21 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
NL1007304C2 (nl) 1997-10-17 1999-04-20 Applied Power Inc Werkwijze voor het vervaardigen van een slangkoppeling.
US6047907A (en) 1997-12-23 2000-04-11 Siemens Automotive Corporation Ball valve fuel injector
EP1082536B1 (en) * 1998-05-27 2004-04-21 Siemens VDO Automotive Corporation Compressed natural gas injector having improved low noise valve needle
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
US20010002680A1 (en) 1999-01-19 2001-06-07 Philip A. Kummer Modular two part fuel injector
US6089467A (en) * 1999-05-26 2000-07-18 Siemens Automotive Corporation Compressed natural gas injector with gaseous damping for armature needle assembly during opening
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
US6422488B1 (en) 1999-08-10 2002-07-23 Siemens Automotive Corporation Compressed natural gas injector having gaseous dampening for armature needle assembly during closing
US6405947B2 (en) 1999-08-10 2002-06-18 Siemens Automotive Corporation Gaseous fuel injector having low restriction seat for valve needle
DE19963389A1 (de) * 1999-12-28 2001-07-05 Bosch Gmbh Robert Verfahren zur Herstellung eines Ventilstücks für eine Kraftstoff-Einspritzvorrichtung
US6676044B2 (en) 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
US6799733B1 (en) * 2000-06-28 2004-10-05 Siemens Automotive Corporation Fuel injector having a modified seat for enhanced compressed natural gas jet mixing
US6371383B1 (en) * 2000-09-05 2002-04-16 Siemens Automotive Corporation Weld joint design for an armature/ball assembly for a fuel injector
US6481646B1 (en) 2000-09-18 2002-11-19 Siemens Automotive Corporation Solenoid actuated fuel injector
US6550690B2 (en) 2000-12-29 2003-04-22 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly
US6502770B2 (en) 2000-12-29 2003-01-07 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6568609B2 (en) 2000-12-29 2003-05-27 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and o-ring retainer assembly
US6695232B2 (en) 2000-12-29 2004-02-24 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve
US6698664B2 (en) 2000-12-29 2004-03-02 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and dynamic adjustment assembly
US6547154B2 (en) 2000-12-29 2003-04-15 Siemens Automotive Corporation Modular fuel injector having a terminal connector interconnecting an electromagnetic actuator with a pre-bent electrical terminal
US6607143B2 (en) 2000-12-29 2003-08-19 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve
US6508417B2 (en) 2000-12-29 2003-01-21 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a lift set sleeve
US6536681B2 (en) 2000-12-29 2003-03-25 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and O-ring retainer assembly
US6523756B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a lift set sleeve
US6811091B2 (en) 2000-12-29 2004-11-02 Siemens Automotive Corporation Modular fuel injector having an integral filter and dynamic adjustment assembly
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US6708906B2 (en) 2000-12-29 2004-03-23 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6520422B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6499668B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6565019B2 (en) 2000-12-29 2003-05-20 Seimens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and O-ring retainer assembly
US6523760B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6520421B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having an integral filter and o-ring retainer
US6655609B2 (en) 2000-12-29 2003-12-02 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly
US6511003B2 (en) 2000-12-29 2003-01-28 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6769636B2 (en) 2000-12-29 2004-08-03 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and O-ring retainer assembly
US6533188B1 (en) 2000-12-29 2003-03-18 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly
US7093362B2 (en) 2001-03-30 2006-08-22 Siemens Vdo Automotive Corporation Method of connecting components of a modular fuel injector
US6687997B2 (en) 2001-03-30 2004-02-10 Siemens Automotive Corporation Method of fabricating and testing a modular fuel injector
US6676043B2 (en) 2001-03-30 2004-01-13 Siemens Automotive Corporation Methods of setting armature lift in a modular fuel injector
US6904668B2 (en) 2001-03-30 2005-06-14 Siemens Vdo Automotive Corp. Method of manufacturing a modular fuel injector
DE10218002B4 (de) * 2002-04-23 2006-09-07 Ims Connector Systems Gmbh Verfahren zur Herstellung eines Steckverbindergehäuse sowie Steckverbindergehäuse
DE10261610A1 (de) * 2002-12-27 2004-07-08 Robert Bosch Gmbh Ventil zum Steuern eines Fluids
DE10308613A1 (de) * 2003-02-27 2004-09-16 Siemens Ag Ventil mit einem Hebel, Hebel und Verfahren zur Herstellung eines Hebels
BRPI0408706B1 (pt) 2003-03-24 2018-04-03 Keihin Corporation Válvula eletromagnética para injeção de combustível
DE102004041318A1 (de) * 2004-08-26 2006-04-27 Ina-Schaeffler Kg Als Kipp- oder Schwinghebel ausgebildeter Nockenfolger für einen Ventiltrieb einer Brennkraftmaschine
DE102004058803A1 (de) 2004-12-07 2006-06-08 Robert Bosch Gmbh Einspritzventil
DE102005036951A1 (de) * 2005-08-05 2007-02-08 Robert Bosch Gmbh Brennstoffeinspritzventil und Verfahren zur Ausformung von Abspritzöffnungen
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
EP1845254A1 (en) * 2006-04-11 2007-10-17 Siemens Aktiengesellschaft Valve assembly
DE102009055133A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Polkern für Magnetventile hergestellt mittels Mehrstoff-MIM
EP2466109A1 (en) * 2010-12-14 2012-06-20 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
JP5862941B2 (ja) * 2011-11-08 2016-02-16 株式会社デンソー 燃料噴射弁
DE102011089240A1 (de) 2011-12-20 2013-06-20 Robert Bosch Gmbh Brennstoffeinspritzventil und Verfahren zur Ausformung von Abspritzöffnungen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197996A (en) * 1978-12-07 1980-04-15 Ford Motor Company Constant pressure fuel injector assembly
US5002727A (en) * 1986-03-10 1991-03-26 Agency Of Industrial Science And Technology composite magnetic compacts and their forming methods
JPH01277677A (ja) * 1988-04-29 1989-11-08 Honda Motor Co Ltd 電磁式燃料噴射弁
US4946107A (en) * 1988-11-29 1990-08-07 Pacer Industries, Inc. Electromagnetic fuel injection valve
DE3927932A1 (de) * 1989-08-24 1991-02-28 Bosch Gmbh Robert Elektromagnetisch betaetigbares kraftstoffeinspritzventil
JPH03191002A (ja) * 1989-12-20 1991-08-21 Sumitomo Heavy Ind Ltd 金属射出成形品の脱バインダ及び焼結方法
DE4008675A1 (de) * 1990-03-17 1991-09-19 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4033952C1 (nl) * 1990-10-25 1992-05-27 Robert Bosch Gmbh, 7000 Stuttgart, De
JPH04180504A (ja) * 1990-11-15 1992-06-26 Sumitomo Heavy Ind Ltd 高速度工具鋼の製造方法
DE4230376C1 (nl) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De

Also Published As

Publication number Publication date
KR100292420B1 (ko) 2001-10-22
WO1994007024A1 (de) 1994-03-31
EP0612375A1 (de) 1994-08-31
US5566920A (en) 1996-10-22
ES2103485T3 (es) 1997-09-16
DE4230376C1 (nl) 1993-04-22
DE59306788D1 (de) 1997-07-24
JPH07501377A (ja) 1995-02-09

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