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EP1364115A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1364115A1
EP1364115A1 EP02717966A EP02717966A EP1364115A1 EP 1364115 A1 EP1364115 A1 EP 1364115A1 EP 02717966 A EP02717966 A EP 02717966A EP 02717966 A EP02717966 A EP 02717966A EP 1364115 A1 EP1364115 A1 EP 1364115A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
connector
injection valve
valve
plastic
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
EP02717966A
Other languages
German (de)
English (en)
Other versions
EP1364115B1 (fr
Inventor
Dieter Maier
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 EP1364115A1 publication Critical patent/EP1364115A1/fr
Application granted granted Critical
Publication of EP1364115B1 publication Critical patent/EP1364115B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention relates to a fuel injector according to the preamble of the main claim.
  • a fuel injection valve for internal combustion engines which is composed of two pre-assembled independent modules.
  • a functional part essentially comprises an electromagnetic circuit and a sealing valve, while a connecting part is mainly formed by a hydraulic connection and an electrical connection.
  • electrical connecting elements and hydraulic connecting elements of both assemblies work together, so that a reliable electrical and hydraulic connection is ensured.
  • a disadvantage of the fuel injector known from DE 198 53 102 AI is, in particular, that the electrical plug-in contact made in one piece with the plastic injection molding only requires great effort by retrofitting the Injection molding machines can be adapted to different connector systems.
  • the conduction of the fuel through the injection molded part made of plastic is disadvantageous, since the plastic is exposed to the dissolving power of the fuel and leakages can occur as a result of the plastic being dissolved. Furthermore, the stability of the connecting part is not adequately guaranteed by heating and subsequent deformation during operation of the internal combustion engine.
  • the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the metallic hollow body, which is inserted into an inlet end of the valve sleeve of the fuel injector, both stabilizes the fuel injector and provides the neutral basis for the assembly of various connectors, which in simple Can be clipped on the extension of the fuel injector.
  • the connector can be pushed or clipped onto the metallic hollow body by means of a holder, wherein the holder can be designed, for example, like a spring ring which partially encompasses the metallic hollow body.
  • the contact lugs of the magnetic coil and the connector are advantageously aligned parallel to one another and to the valve sleeve, which enables simple assembly and subsequent connection.
  • a further advantage is that both the fuel injector and the metallic hollow body can be manufactured separately and then combined, without the design of the conventional components of the fuel injectors having to be changed.
  • Fig. 1 shows a schematic section through an embodiment of a functional part of a fuel injector
  • Fig. 2 shows a schematic section through the fuel injector shown in Fig. 1
  • FIG. 1 shows a longitudinal section through a fuel injection valve 1, which is particularly suitable for injecting fuel into an intake manifold (not shown) of an internal combustion engine in a schematic sectional view.
  • the fuel injector 1 comprises a magnet coil 2 which is wound on a coil carrier 3.
  • the coil carrier 3 is encapsulated in a valve housing 4 and closed by a cover 5.
  • a contact lug 6 is formed on the coil carrier 3 and, in the exemplary embodiment, is aligned parallel to a longitudinal axis 33 of the fuel injector 1.
  • the coil carrier 3 is penetrated by a valve sleeve 7 which is tubular and comprises a support tube 8 which is spread or welded therein and which serves as the inner pole of the magnet coil 2.
  • the valve housing 4 can serve, for example, as the outer pole of the magnetic coil 2.
  • An armature 9 is arranged on the outflow side of the support tube 8 and is formed in one piece with a valve needle 10. Flow-through openings 11 are provided in the valve needle 10 and guide the fuel flowing through the fuel injection valve 1 to a sealing seat.
  • a ring filter 12 for filtering the fuel is arranged in the area of the flow openings 11.
  • the valve needle 10 is preferably operatively connected by welding to a spherical valve closing body 13, which forms a sealing seat with a valve seat body 14. Downstream of the sealing seat, at least one spray opening 15 is formed in a spray orifice plate 34, from which the fuel is injected into the intake manifold (not shown).
  • the armature 9 is acted upon by a return spring 16 in the idle state of the fuel injection valve 1 so that the fuel injection valve 1 is kept closed by the pressure of the valve closing body 13 on the valve seat body 14.
  • the return spring 16 is arranged in a recess 17 of the armature 9 or the support tube 8 and is preloaded by an adjusting sleeve 18.
  • a cup-shaped filter element 19 is preferably pressed into the valve sleeve 7 on the inlet side of the adjusting sleeve 18.
  • the fuel which is supplied by a central fuel supply 20, flows through the fuel injection valve 1 through the recess 17 and the flow openings 11 to the sealing seat and to the spray opening 15.
  • the magnetic coil 2 is an electrical line and a contact lug 6, an electrical one
  • a magnetic field builds up which, with sufficient strength, pulls the armature 9 into the magnet coil 2 against the force of the return spring 16 against the direction of flow of the fuel.
  • a working gap 21 formed between the armature 9 and the support tube 8 is closed.
  • the movement of the armature 9 also causes the valve needle 10, which is formed in one piece with the armature 9, to be taken along in the stroke direction, so that the valve closing body 13 lifts off the valve seat body 14 and fuel is directed to the spray opening 15.
  • the fuel injector 1 is closed as soon as the current exciting the magnet coil 2 is switched off and the magnetic field is reduced to such an extent that the return spring 16 pushes the armature 9 away from the support tube 8, as a result of which the valve needle 10 moves in the outflow direction and the valve closing body 13 touches the valve seat body 14 ,
  • FIG. 2 shows an excerpted sectional illustration of the one shown in FIG. 1 and equipped and assembled with the measures according to the invention
  • Fuel injection valve 1 The same components are provided with the same reference numerals. A repetitive description of already known components can be dispensed with.
  • the fuel injector 1 is shown in FIG. 2 in a final manufacturing state.
  • a collar 22 is attached or injection-molded onto the valve housing 4 at its lower end, whereby an annular groove is formed, into which a first seal 23 is introduced.
  • a tubular, metallic hollow body 25 is inserted and with the valve sleeve 7 z.
  • a customer-specific connector plug 26 is attached to the metallic hollow body 25 by means of a holder 27, preferably made of plastic, which is designed, for example, as a spring ring and at least partially encompasses the metallic hollow body 25.
  • the connector 26 has a contact tab 28 which is aligned with the contact tab 6 of the solenoid 2 and after assembly by means of suitable techniques such. B. welding, soldering or gluing or with a clamp or plug connection with this.
  • the connector plug 26 has a plastic sleeve 29 which surrounds the contact lug 28 and projects beyond it.
  • the plastic sleeve 29 is also referred to as a clip connector and has a circumferential groove 30, which serves as an attachment for an encapsulation tool during further processing.
  • connection plug 26 After the connection plug 26 has been installed, the fuel injection valve 1 and the metallic hollow body 25 connected to it are provided with a plastic coating 31 and provided with a second seal 32 for mounting on a fuel distributor line.
  • the respective customer-specific electrical connector plug 26 is inserted, for example, into customer-specific extrusion tools.
  • the seal between the connector plug 26 and the plastic extrusion 31 is made by melting the connector plug 26 in the region of specifically shaped, circular circumferential tips 35 in the central region 36 of the connector plug 26, which is why the plastic of the plastic insert 31 must have a higher melting point than that of the connector plug 26 ,
  • the connector 26 is used in a certain desired plastic color, so that the connector 26 used for color coding clearly characterize the fuel injector 1 without any additional information. Different valve types can be assigned very easily using such a color code.
  • the invention is not limited to the illustrated embodiment and z. B. applicable for any designs of fuel injection valves 1.

Landscapes

  • 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)

Abstract

La présente invention concerne une soupape d'injection de carburant (1) comprenant une bobine d'électro-aimant (2), qui coopère avec un induit (9) contraint par un ressort de rappel (16). Cet induit forme, avec un pointeau de soupape (10), une partie de soupape à mobilité axiale. Un corps de fermeture de soupape (13), qui est pourvu sur ledit pointeau de soupape (10), forme, avec un corps de siège de soupape (14), un siège d'étanchéité. Ladite soupape d'injection de carburant comprend également au moins une languette de contact (6), qui est en liaison conductrice avec ladite bobine d'électro-aimant (2). Un corps creux métallique (25) constitue une rallonge côté alimentation de la soupape d'injection de carburant (1). Un système de raccordement (26) comprenant une languette de contact (28) peut être relié audit corps creux métallique (25) de façon que la languette de contact du système de raccordement (26) puisse être mise en liaison conductrice avec la languette de contact (6) de la bobine d'électro-aimant (2).
EP02717966A 2001-02-22 2002-02-22 Soupape d'injection de carburant Expired - Lifetime EP1364115B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10108464A DE10108464A1 (de) 2001-02-22 2001-02-22 Brennstoffeinspritzventil
DE10108464 2001-02-22
PCT/DE2002/000644 WO2002066818A1 (fr) 2001-02-22 2002-02-22 Soupape d"injection de carburant

Publications (2)

Publication Number Publication Date
EP1364115A1 true EP1364115A1 (fr) 2003-11-26
EP1364115B1 EP1364115B1 (fr) 2004-11-24

Family

ID=7675067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02717966A Expired - Lifetime EP1364115B1 (fr) 2001-02-22 2002-02-22 Soupape d'injection de carburant

Country Status (8)

Country Link
US (1) US6910642B2 (fr)
EP (1) EP1364115B1 (fr)
JP (1) JP4130771B2 (fr)
CN (1) CN1297742C (fr)
CZ (1) CZ20023456A3 (fr)
DE (2) DE10108464A1 (fr)
RU (1) RU2003127394A (fr)
WO (1) WO2002066818A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4058024B2 (ja) * 2004-06-16 2008-03-05 株式会社ケーヒン 電磁式燃料噴射弁
DE102004037541B4 (de) * 2004-08-03 2016-12-29 Robert Bosch Gmbh Brennstoffeinspritzventil
US7552880B2 (en) * 2004-08-05 2009-06-30 Continental Automotive Systems Us, Inc. Fuel injector with a deep-drawn thin shell connector member and method of connecting components
DE102005043352B9 (de) * 2004-09-13 2011-03-17 Guk Hyun Park Kraftstoffeinspritzsystem
DE102005004320A1 (de) * 2005-01-31 2006-08-03 Robert Bosch Gmbh Ausrichtung elektrischer Überbrückungen in Injektoren
EP1783360B1 (fr) * 2005-11-02 2008-03-26 Delphi Technologies, Inc. Filtre interne pour un injecteur au carburant
CN100462549C (zh) * 2006-10-26 2009-02-18 贵州红林机械有限公司 燃气高精度喷射阀
JP4491474B2 (ja) * 2007-05-31 2010-06-30 日立オートモティブシステムズ株式会社 燃料噴射弁及びそのストローク調整方法
JP2009167843A (ja) * 2008-01-11 2009-07-30 Denso Corp 燃料噴射弁およびその製造方法
KR101000169B1 (ko) * 2008-12-03 2010-12-10 기아자동차주식회사 엘피아이 인젝터용 노즐
DE102010031277A1 (de) 2010-07-13 2012-01-19 Robert Bosch Gmbh Kraftstoffeinspritzventil mit reduzierter Bauteileanzahl
DE102011078251A1 (de) 2011-06-29 2013-01-03 Robert Bosch Gmbh Einspritzventil sowie Verfahren zur Herstellung eines Einspritzventils
DE102011084704A1 (de) * 2011-10-18 2013-04-18 Robert Bosch Gmbh Ausrichtelement für ein Einspritzventil sowie Verfahren zur Herstellung eines Einspritzventils
JP6049903B2 (ja) * 2013-11-18 2016-12-21 三菱電機株式会社 燃料噴射弁、及び燃料噴射弁の製造方法
CN107076075B (zh) 2014-10-28 2019-10-01 三菱电机株式会社 燃料喷射阀
WO2019224929A1 (fr) * 2018-05-23 2019-11-28 三菱電機株式会社 Soupape d'injection de carburant
GB2602649B (en) * 2021-01-07 2023-01-04 Delphi Automotive Systems Lux Fuel injector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310719C2 (de) * 1993-04-01 2002-09-12 Bosch Gmbh Robert Verfahren zur Herstellung eines Magnetkreises für ein Ventil
US5462231A (en) * 1994-08-18 1995-10-31 Siemens Automotive L.P. Coil for small diameter welded fuel injector
DE19712591A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils
DE19744739A1 (de) * 1997-10-10 1999-04-15 Bosch Gmbh Robert Brennstoffeinspritzventil
IT1296144B1 (it) * 1997-11-18 1999-06-09 Elasis Sistema Ricerca Fiat Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna.
DE19853102A1 (de) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Brennstoffeinspritzventil
US6302340B1 (en) * 1999-05-14 2001-10-16 Siemans Automotive Corporation Post electrical plug assembly
US6105884A (en) * 1999-09-15 2000-08-22 Delphi Technologies, Inc. Fuel injector with molded plastic valve guides
US6186421B1 (en) * 1999-12-06 2001-02-13 Delphi Technologies, Inc. Fuel Injector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02066818A1 *

Also Published As

Publication number Publication date
RU2003127394A (ru) 2005-03-20
DE50201620D1 (de) 2004-12-30
CZ20023456A3 (en) 2004-04-14
WO2002066818A1 (fr) 2002-08-29
JP2004518849A (ja) 2004-06-24
CN1297742C (zh) 2007-01-31
US20030168532A1 (en) 2003-09-11
EP1364115B1 (fr) 2004-11-24
US6910642B2 (en) 2005-06-28
JP4130771B2 (ja) 2008-08-06
CN1457390A (zh) 2003-11-19
DE10108464A1 (de) 2002-09-05

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