EP1423603B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1423603B1
EP1423603B1 EP02754214A EP02754214A EP1423603B1 EP 1423603 B1 EP1423603 B1 EP 1423603B1 EP 02754214 A EP02754214 A EP 02754214A EP 02754214 A EP02754214 A EP 02754214A EP 1423603 B1 EP1423603 B1 EP 1423603B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
injection valve
guide sleeve
armature
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
EP02754214A
Other languages
German (de)
English (en)
Other versions
EP1423603A1 (fr
Inventor
Zlatko Delas
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 EP1423603A1 publication Critical patent/EP1423603A1/fr
Application granted granted Critical
Publication of EP1423603B1 publication Critical patent/EP1423603B1/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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • 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
    • 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
    • F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats

Definitions

  • the invention is based on a fuel injection valve according to the preamble of independent claim 1.
  • an electromagnetically actuated fuel injection valve in which for electromagnetic actuation, an armature cooperates with an electrically energizable magnetic coil and the stroke of the armature is transmitted via a valve needle to a valve closing body.
  • the valve closing body cooperates with a valve seat surface to form a sealing seat.
  • the return of the anchor is done with a return spring.
  • a disadvantage of the DE 196 26 576 A1 known fuel injection valve is in particular that the return spring is supported directly on the armature or an inlet end of the valve needle.
  • the bore of the inner pole, in which the return spring is arranged is smaller than the anchor bore, so that the return spring can migrate during operation of the fuel injection valve. The result are inclinations of the return spring and jamming and Wear and tear with subsequent malfunction of the fuel injector.
  • the DE 195 03 224 A1 discloses an electromagnetically actuable injection valve for fuel injection systems of internal combustion engines having a valve seat cooperating with a closing body, which is attached to a valve needle, and with an actuating device which acts on a remote from the mounting region of the closing body portion of the valve needle coupling element to an opening and To effect closing movement of the closing body in a flow area in a valve housing, wherein the closing body is held on the valve needle by means of a snap connection.
  • the valve needle is made of plastic and is molded onto a magnet armature at its downstream end.
  • the armature has a cylindrical recess in which a return spring is received at its upstream end.
  • the fuel injection valve according to the invention with the features of the independent claim 1 has the advantage that the return spring on the guide sleeve has an improved support.
  • the spring can not emigrate so much. The wear is reduced and the return spring can not tilt.
  • the return spring can not leave the hole of the inner pole, whereby malfunction of the fuel injection valve is prevented.
  • a particular advantage is that the guide sleeve can be produced in a simple manner by turning.
  • Another advantage is that the guide sleeve can be mounted in a simple manner with the valve needle and the anchor.
  • the partially spherical shape of the guide part of the guide sleeve advantageously allows a low-friction guidance in the bore of the inner pole.
  • FIG. 1 shows an exemplary embodiment of a fuel injection valve 1 according to the invention in an excerpted sectional view.
  • the fuel injection valve 1 is designed in the form of a fuel injection valve 1 for fuel injection systems of mixture-compression, spark-ignition internal combustion engines.
  • the fuel injection valve 1 is suitable for the direct injection of fuel into a combustion chamber, not shown, of an internal combustion engine.
  • the fuel injection valve 1 consists of a tubular nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is operatively connected to a valve closing body 4 which cooperates with a valve seat body 6 arranged on a valve seat body 5 to form a sealing seat.
  • the fuel injection valve 1 is an inwardly opening fuel injection valve 1, which has at least one injection opening 7.
  • the nozzle body 2 passes through a pot-shaped outer pole 9 of a magnetic coil 10, which is sealed for example by a labyrinth seal 26 against an environment of the fuel injection valve 1.
  • the magnet coil 10 is wound on a coil carrier 12 and cooperates with a arranged in the nozzle body 2 inner pole 13 of the magnetic coil 10 together.
  • the magnetic coil 10 is energized via a line 11 from a via an electrical plug contact 17 can be supplied electric current.
  • the plug contact 17 may be surrounded by a plastic casing not shown.
  • the valve needle 3 is connected via a flange 14, in which the valve needle 3 is inserted, in frictional connection with an armature 20.
  • a Vorhubfeder 18 is disposed between the flange 14 and a shoulder 15 of the valve needle 3, which the armature 20 during actuation of the fuel injection valve 1 an armature free passage and thus a quick opening of the fuel injection valve 1 allowed.
  • a return spring 23 is arranged, which is brought in the present design of the fuel injection valve 1 by a sleeve 24 to bias.
  • the return spring 23 is supported according to the invention on a guide sleeve 28 which is inserted into an axial recess 33 of the valve needle 3 and is preferably pressed with the valve needle 3 from.
  • the inventive measure prevents the return spring 23, which is supported according to the prior art directly to the shoulder 15 of the valve needle 3, emigrates during operation of the fuel injection valve 1 in a recess 25 of the fuel injection valve 1, but completely in the inner pole 13 remains , By emigrating the return spring 23 malfunction of the fuel injection valve 1 to jamming the return spring 23, uneven wear and deformation of the shoulder 15 of the valve needle 5 may occur.
  • the guide sleeve 28 extends through the armature 20 and at least teil.teilweise in the bore 32 of the inner pole 13 of the magnetic coil 10.
  • the guide sleeve 28 is formed as a hollow cylinder and has in the Valve needle 3 and the armature 20 a tubular shaft 29 and in the region of the inner pole 13, a guide member 30.
  • the guide sleeve 28 can be prepared for example by turning in a simple and cost-effective manner.
  • the guide sleeve 28 is embodied teilkugelig in its guide member 30 and dimensioned so that it bears against an inner wall 31 of the bore 32 of the inner pole 13.
  • the guide part 30 of the guide sleeve 28 moves during operation of the fuel injection valve 1 exclusively on the inner wall 31 of the inner pole 13.
  • the teilkugelige form contributes to a low-friction guidance, whereby the dynamics of the fuel injection valve 1 is not affected.
  • the axial length of the restoring spring 23 is always smaller than the axial length of the bore 32 of the inner pole 13.
  • the return spring 23 accordingly does not project out of the inner pole 13 at any time and can not migrate into the recess 25 of the fuel injection valve 1 ,
  • the fuel is usually supplied to the fuel injector 1 through a fuel distributor line (not shown) via a central fuel supply 16.
  • the fuel is passed through the recess 25, the guide sleeve 28, the tubular valve needle 3 and through flow openings 8 in the valve needle 3 to the sealing seat.
  • valve needle 3 In the idle state of the fuel injection valve 1, the valve needle 3 is acted upon by the guide sleeve 28 by the return spring 23 with a bias that the valve closing body 4 is held in sealing contact with the valve seat surface 6 and the fuel injection valve 1 is kept closed.
  • a formed between the armature 20 and the inner pole 13 working gap 27 is closed as well as a between the flange 14 and the shoulder 15 of the valve needle 3 formed Vorhubspalt 19th
  • the armature 20 drops after sufficient degradation of the magnetic field by the pressure of the return spring 23 from the inner pole 13, causing the valve sleeve 3 in operative connection with the flange 14 on the armature 20 via the guide sleeve 28 moves counter to the stroke direction.
  • the valve closing body 4 is seated on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • the invention is not limited to the illustrated embodiment and z. As applicable to fuel injection valves 1 for mixture-compressing, auto-ignition internal combustion engines.

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)

Claims (5)

  1. Injecteur de carburant (1) comportant une bobine électromagnétique (10) coopérant avec un induit (20) sollicité par un ressort de rappel (23), l'induit formant avec une aiguille d'injecteur (3), avec une pièce d'injecteur mobile axialement avec un organe d'obturation de soupape (4) sur l'aiguille d'injecteur (3), cet organe formant un siège d'étanchéité avec un corps de siège de soupape (5), et
    le ressort de rappel (23) s'appliquant contre un manchon de guidage (28) logé dans une cavité axiale (33) de l'aiguille d'injecteur (3),
    caractérisé en ce que
    le manchon de guidage (28) traverse l'induit (20) et comporte un corps tubulaire (29) et une pièce de guidage (30) en forme de partie sphérique.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le manchon de guidage (28) traverse l'induit (20) et coopère par une liaison par la force avec l'induit (20) et l'aiguille d'injecteur (3).
  3. Injecteur de carburant selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    le corps tubulaire (29) du manchon de guidage (28) peut être enfoncé dans la cavité (33) de l'aiguille d'injecteur (3).
  4. Injecteur de carburant selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la pièce de guidage (30) du manchon de guidage (28) est guidée de manière mobile dans le pôle intérieur (13) de l'injecteur de carburant (1).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la pièce de guidage (30) du manchon de guidage (28) s'applique contre la paroi intérieure (31) d'un perçage (32) du pôle intérieur (13).
EP02754214A 2001-08-29 2002-06-14 Soupape d'injection de carburant Expired - Lifetime EP1423603B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10142302A DE10142302A1 (de) 2001-08-29 2001-08-29 Brennstoffeinspritzventil
DE10142302 2001-08-29
PCT/DE2002/002176 WO2003027487A1 (fr) 2001-08-29 2002-06-14 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1423603A1 EP1423603A1 (fr) 2004-06-02
EP1423603B1 true EP1423603B1 (fr) 2007-08-22

Family

ID=7696981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754214A Expired - Lifetime EP1423603B1 (fr) 2001-08-29 2002-06-14 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US7070128B2 (fr)
EP (1) EP1423603B1 (fr)
JP (1) JP4200098B2 (fr)
KR (1) KR100878131B1 (fr)
DE (2) DE10142302A1 (fr)
WO (1) WO2003027487A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10314678B4 (de) * 2003-04-01 2013-11-28 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10361761A1 (de) * 2003-12-29 2005-07-28 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102004024533A1 (de) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Brennstoffeinspritzventil
JP4211814B2 (ja) * 2006-07-13 2009-01-21 株式会社日立製作所 電磁式燃料噴射弁
JP4935882B2 (ja) * 2009-03-05 2012-05-23 株式会社デンソー 燃料噴射弁
CN101539084B (zh) * 2009-03-20 2010-12-29 天津大学 共轨式电控喷射器
EP2282043B1 (fr) 2009-07-02 2013-04-17 Continental Automotive GmbH Injecteur de fluide et procédé et appareil pour faire fonctionner l'injecteur de fluide
EP2535552B1 (fr) * 2011-06-15 2015-02-25 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
JP5862941B2 (ja) * 2011-11-08 2016-02-16 株式会社デンソー 燃料噴射弁
EP2837813B1 (fr) * 2013-08-14 2016-04-06 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
US10309357B2 (en) 2013-09-13 2019-06-04 Continental Automotive Gmbh Fluid injector
EP2863045B1 (fr) 2013-10-15 2016-09-14 Continental Automotive GmbH Procédé de fabrication d'un injecteur pour moteur à combustion, ensemble d'aiguille-armature et injecteur de fluide
KR102176264B1 (ko) 2019-06-26 2020-11-09 주식회사 현대케피코 니들바의 수평거동이 제거된 연료 인젝터
KR102260757B1 (ko) 2019-12-27 2021-06-07 주식회사 현대케피코 인젝터의 니들-볼 고정구조
KR20220045698A (ko) 2020-10-06 2022-04-13 주식회사 현대케피코 인젝터의 니들-볼 고정구조
CN114483383B (zh) * 2022-01-28 2023-07-21 刘义亭 一种气体燃料喷射器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB880369A (en) 1958-09-24 1961-10-18 Bosch Gmbh Robert Electromagnetically actuated fuel injection valve for internal combustion engines
JPS59201966A (ja) 1983-04-28 1984-11-15 Aisan Ind Co Ltd 電磁燃料噴射器
DE3825134A1 (de) 1988-07-23 1990-01-25 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil und verfahren zur herstellung
DE3825135A1 (de) * 1988-07-23 1990-01-25 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4131500A1 (de) * 1991-09-21 1993-03-25 Bosch Gmbh Robert Elektromagnetisch betaetigbares einspritzventil
DE19503224A1 (de) * 1995-02-02 1996-08-08 Bosch Gmbh Robert Elektromagnetisch betätigbares Einspritzventil für Kraftstoffeinspritzanlagen von Verbrennungsmotoren
DE19532865A1 (de) 1995-09-06 1997-03-13 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19626576A1 (de) * 1996-07-02 1998-01-08 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19744739A1 (de) * 1997-10-10 1999-04-15 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19855568A1 (de) * 1998-12-02 2000-06-08 Bosch Gmbh Robert Brennstoffeinspritzventil
US6357677B1 (en) * 1999-10-13 2002-03-19 Siemens Automotive Corporation Fuel injection valve with multiple nozzle plates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US7070128B2 (en) 2006-07-04
WO2003027487A1 (fr) 2003-04-03
US20050258276A1 (en) 2005-11-24
KR20040029046A (ko) 2004-04-03
JP4200098B2 (ja) 2008-12-24
DE50210773D1 (de) 2007-10-04
DE10142302A1 (de) 2003-03-20
EP1423603A1 (fr) 2004-06-02
KR100878131B1 (ko) 2009-01-14
JP2005504218A (ja) 2005-02-10

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