EP1797313A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1797313A1
EP1797313A1 EP05797089A EP05797089A EP1797313A1 EP 1797313 A1 EP1797313 A1 EP 1797313A1 EP 05797089 A EP05797089 A EP 05797089A EP 05797089 A EP05797089 A EP 05797089A EP 1797313 A1 EP1797313 A1 EP 1797313A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
valve according
disc
valve
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
EP05797089A
Other languages
German (de)
English (en)
Other versions
EP1797313B1 (fr
Inventor
Ferdinand Reiter
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 EP1797313A1 publication Critical patent/EP1797313A1/fr
Application granted granted Critical
Publication of EP1797313B1 publication Critical patent/EP1797313B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M51/06—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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to 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
    • 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
    • F02M61/166—Selection of particular materials

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • a fuel injection valve which comprises a core surrounded by a magnetic coil, an armature, by means of which a valve closing body cooperating with a fixed valve seat can be actuated by means of a connecting tube welded to the armature, a tubular intermediate metal part having with its one end with an armature end of the Kerns and with its other end to a tubular connecting part by welding is tightly connected, and at least one of the solenoid spanning bow-shaped guide member which is connected with its valve closing body end facing the connecting part and at its other end to the core by welding.
  • the welding of two overlapping components of the fuel injection valve takes place in a cross-sectional reduction of one of the two parts to be welded.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that between the housing and the valve sleeve, a reliable seal by a fuel-resistant elastomer is axially possible.
  • This seal is a preferably made of rubber disc, which has the advantage that the sealing element used is simple and inexpensive.
  • Another advantage is that the rubber disc within the valve has only a small footprint, which is further reduced by the fact that the rubber disc is compressed after assembly.
  • the height and the shape of the increase is designed so that the coil is always pressed onto the rubber disc, if the lid is mounted on its final position.
  • This reliable seal has the advantage that it is independent of the tolerance of the items, which are compensated by targeted deformation of the increase tolerances and the coil is set backlash under axial bias.
  • the axial preload provided by the mounted on the end face facing the cover ensures that the hydraulic pressure of the plastic mass in the Steckanschlußumspritzung causes no additional axial movement of the coil, which could damage the soldering coil and connector clip.
  • an inner radius of the disc is smaller than a radius of a valve sleeve. Furthermore, it is advantageous that the inner radius of the disc is dimensioned so that the sealing of the valve sleeve takes place.
  • Fig. 1 is a schematic section through a
  • Fig. 2 is a schematic partial section through the inventively designed
  • Fig. 3 is a schematic partial section through the inventively designed
  • Fuel injection valve according to a second embodiment; and Fig. 4 is a schematic partial section through the inventively designed
  • Fuel injection valve according to a third embodiment.
  • Fig. 1 shows a schematic sectional view of a longitudinal section through an embodiment of an inventively designed fuel injector 1, which is particularly suitable for injecting fuel into a not-shown suction manifold of an internal combustion engine.
  • the fuel injection valve 1 comprises a magnetic coil 2 which is wound on a bobbin 3.
  • the bobbin 3 is encapsulated in a pot-shaped valve housing 4.
  • the bobbin 3 is penetrated by a valve sleeve 5, which is designed tubular. Downstream of the inner pole 6, an armature 7 is arranged, which is connected to a valve needle 8.
  • the valve needle 8 is in operative connection with a in
  • Embodiment spherical valve closure member 10 which forms a sealing seat with a valve seat body 11.
  • At least one injection orifice 13 is formed, from which the fuel is injected into the suction pipe, not shown.
  • the armature 7 is in the idle state of the fuel injection valve 1 by a return spring 14 with a force is applied so that the fuel injection valve 1 is kept closed by the pressure of the valve closing body 10 on the valve seat body 11.
  • the return spring 14 is disposed in a recess 15 of the armature 7 and the inner pole 6 and is brought by an adjusting sleeve 16 to bias.
  • a cup-shaped filter element 17 is preferably pressed into the valve sleeve 5.
  • the fuel which is supplied via a central fuel supply 18, flows through the fuel injection valve 1 through a supply pipe 24, the recess 15 and flows to the valve seat body 11 and the injection orifice 13.
  • Fuel distribution line, the fuel injection valve 1 is provided in the region of the central fuel supply 18 with a seal 19. Another seal 20 seals the connection, not shown, between the fuel injection valve 1 and the intake manifold.
  • the solenoid coil 2 is energized via a line from an electrical current which can be supplied via an electrical plug contact 21.
  • the plug-in contact 21 is surrounded by a plug connection extrusion 22, which may be injection-molded onto the valve sleeve 5 or on the supply pipe 24.
  • the fuel injection valve 1 is closed as soon as the magnetic coil 2 exciting current is turned off and the
  • valve sleeve 5 is designed tubular. Between the valve housing 4 and valve sleeve 5 according to the invention a disc 25 made of an elastomeric material, preferably a rubber washer 25, is provided, which is a reliable seal of the valve sleeve 5, wherein a
  • Inner radius of the disc 25 is smaller than a radius of the valve sleeve 5.
  • the inner radius of the disc 25 is dimensioned so that the valve sleeve 5 is sealed. This is shown in the drawings Fig.l to Fig.4. Furthermore, the bobbin 3 on a lid 28 of the
  • axial force is transmitted from the cover 28 via the end face 30 facing the cover 28 and via the magnet coil 2 / coil support 3 to the rubber disk 25.
  • the rubber disc 25 can be used either as a loose component or e.g. be installed fixed by gluing on the bobbin 3.
  • a bobbin carrier 3 which has at its downstream end a radially encircling collar 12 which is circumferentially disposed on the lower end side of the bobbin 3, radially outside the rubber disk 25 and at a clamped state of the rubber disk 25 on the Shoulder of the valve housing 4 is present.
  • a plurality of knobs may also be mounted radially symmetrically on the lower end of the coil carrier 3.
  • the elevation 27 may be in the form of a partial ring 27A, the dimensions of its cross section 27B being small in relation to the radial extent of the end surface 30 facing the cover 28.
  • both the height and the cross section 27B of the increase 27 is designed so that the magnetic coil 2 is pressed regardless of the tolerance of the individual parts on the rubber disk 25, whereby the tolerances are compensated by targeted deformation of the increase 27.
  • Over the circumference of the bobbin 3 and a plurality of elevations 27 may be arranged.
  • the solenoid 2 is set free of play under axial bias, it being ensured that the hydraulic pressure which is caused by the plastic mass in the Steckanschlußumspritzung 22, causes no additional axial movement of the solenoid 2.

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)
  • Fuel-Injection Apparatus (AREA)

Abstract

Soupape d'injection (1) de carburant qui comporte une bobine magnétique (2) qui coopère avec un induit (7) soumis à l'action d'un ressort de rappel (14), ledit induit formant avec une aiguille (8) de soupape une partie axialement mobile de soupape. L'aiguille (8) de soupape est associée à un obturateur (10) de soupape qui forme un siège étanche avec un corps (11) de siège de soupape. Selon la présente invention, la douille (5) de soupape possède une étanchéité fiable produite par un disque de caoutchouc (25) placé au-dessous de la bobine magnétique (2), ladite étanchéité étant encore améliorée par le fait que la bobine magnétique (2) se trouvant sous l'action d'une précontrainte axiale est poussée contre le disque de caoutchouc (25).
EP05797089A 2004-09-29 2005-09-07 Soupape d'injection de carburant Active EP1797313B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004047179A DE102004047179A1 (de) 2004-09-29 2004-09-29 Brennstoffeinspritzventil
PCT/EP2005/054408 WO2006034945A1 (fr) 2004-09-29 2005-09-07 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1797313A1 true EP1797313A1 (fr) 2007-06-20
EP1797313B1 EP1797313B1 (fr) 2012-04-04

Family

ID=35485013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05797089A Active EP1797313B1 (fr) 2004-09-29 2005-09-07 Soupape d'injection de carburant

Country Status (5)

Country Link
US (1) US20080035762A1 (fr)
EP (1) EP1797313B1 (fr)
JP (1) JP4542155B2 (fr)
DE (1) DE102004047179A1 (fr)
WO (1) WO2006034945A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1913252B1 (fr) * 2005-08-04 2017-09-13 Robert Bosch Gmbh Soupape d'injection de carburant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2896816A1 (fr) * 2014-01-16 2015-07-22 Continental Automotive GmbH Ensemble de filtre pour injecteur de carburant, injecteur de carburant et procédé d'assemblage de l'ensemble de filtre
CN103925135B (zh) * 2014-04-12 2017-02-01 哈尔滨工程大学 一种共轨喷油器
CN103925136B (zh) * 2014-04-12 2016-08-17 哈尔滨工程大学 一种电磁阀侧向安装的喷油器
CN105840379A (zh) * 2016-03-24 2016-08-10 中国北方发动机研究所(天津) 一种l形共轨喷油器
JPWO2018003559A1 (ja) * 2016-07-01 2019-02-07 日立オートモティブシステムズ株式会社 燃料噴射弁
CN107152363A (zh) * 2017-07-03 2017-09-12 浙江凯利智控科技有限公司 喷油器新磁路结构

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US3598360A (en) * 1969-08-27 1971-08-10 Richdel Solenoid valve
CA1119065A (fr) * 1978-11-01 1982-03-02 William B. Claxton Injecteur de carburant a commande electromagnetique
FR2492894B1 (fr) 1980-10-29 1985-06-07 Renault Injecteur a commande electromagnetique a bille
US4382242A (en) * 1981-12-21 1983-05-03 General Motors Corporation Solenoid operated electrical switch
IT1183213B (it) * 1985-02-07 1987-10-15 Alfa Romeo Spa Inietore elettrimagnetico per un motore a c.i.
GB8630686D0 (en) * 1986-12-23 1987-02-04 Lucas Ind Plc Fuel injector
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US5328100A (en) * 1992-09-22 1994-07-12 Siemens Automotive L.P. Modified armature for low noise injector
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DE4428869C2 (de) * 1993-08-06 1997-08-07 Zexel Corp Magnetventil
US5339063A (en) * 1993-10-12 1994-08-16 Skf U.S.A., Inc. Solenoid stator assembly for electronically actuated fuel injector
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JPH0849624A (ja) * 1994-06-01 1996-02-20 Zexel Corp 電磁式燃料噴射弁の燃料侵入防止装置
US5918818A (en) * 1996-05-22 1999-07-06 Denso Corporation Electromagnetically actuated injection valve
US5820099A (en) * 1997-05-20 1998-10-13 Siemens Automotive Corporation Fluid migration inhibitor for fuel injectors
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See references of WO2006034945A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1913252B1 (fr) * 2005-08-04 2017-09-13 Robert Bosch Gmbh Soupape d'injection de carburant

Also Published As

Publication number Publication date
DE102004047179A1 (de) 2006-03-30
US20080035762A1 (en) 2008-02-14
JP2008514858A (ja) 2008-05-08
EP1797313B1 (fr) 2012-04-04
WO2006034945A1 (fr) 2006-04-06
JP4542155B2 (ja) 2010-09-08

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