EP1423603A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1423603A1
EP1423603A1 EP02754214A EP02754214A EP1423603A1 EP 1423603 A1 EP1423603 A1 EP 1423603A1 EP 02754214 A EP02754214 A EP 02754214A EP 02754214 A EP02754214 A EP 02754214A EP 1423603 A1 EP1423603 A1 EP 1423603A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
injection valve
guide sleeve
return spring
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
EP02754214A
Other languages
German (de)
English (en)
Other versions
EP1423603B1 (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

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
    • 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 relates to a fuel injector according to the preamble of the main claim.
  • an electromagnetically actuated fuel injection valve in which an armature interacts with an electrically excitable solenoid for electromagnetic actuation and the stroke of the armature is transmitted to a valve closing body via a valve needle.
  • the valve closing body interacts with a valve seat surface to form a sealing seat.
  • Several fuel channels are provided in the anchor.
  • the armature is reset using a return spring.
  • a disadvantage of the fuel injector known from DE 196 26 576 AI is, in particular, that the return spring is supported directly on the armature or an inlet-soap end of the valve needle.
  • the bore of the inner pole, in which the return spring is arranged, is ' smaller-caliber than the armature bore, so that the return spring can migrate during the operation of the fuel injector.
  • the result is inclined positions of the return spring as well as jamming and Signs of wear with subsequent malfunctions of the
  • the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the return spring on the guide sleeve has an improved edition.
  • the feather can no longer migrate as much. Wear is reduced and the return spring cannot tilt.
  • the return spring cannot leave the bore of the inner pole, which prevents malfunction of the fuel injector.
  • the guide sleeve can be produced in a simple manner by turning.
  • the guide sleeve can be mounted in a simple manner with the valve needle and the armature.
  • the part-spherical shape of the guide part of the guide sleeve advantageously allows low-friction guidance in the bore of the inner pole.
  • Fig. 1 shows a schematic section through
  • FIG. 2 is an enlarged schematic section through the
  • Fig. 1 shows an excerpted sectional view of an embodiment of a - fuel injector 1 according to the invention.
  • the fuel injection valve 1 is in the form of a fuel injection valve 1 for fuel injection systems of mixture-compressing, spark-ignition internal combustion engines.
  • the fuel injection valve 1 is suitable for injecting fuel directly 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 surface 6 arranged on a valve seat body 5 to form a sealing seat.
  • the fuel injection valve 1 is an inward opening fuel injection valve 1 which has at least one spray opening 7.
  • the nozzle body 2 passes through a cup-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 interacts with an inner pole 13 of the magnet coil 10 arranged in the nozzle body 2.
  • the magnet coil 10 is excited via a line 11 by an electrical current that can be supplied via an electrical plug contact 17.
  • the plug contact 17 can be surrounded by a plastic sheath, not shown.
  • the valve needle 3 is non-positively via a flange 14, in which the Vencilnadel 3 is inserted
  • Fuel injector 1 allowed.
  • a return spring 23 is arranged, which in the present design of the fuel injector 1 is preloaded by a sleeve 24.
  • 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.
  • the measure according to the invention prevents the return spring 23, which, according to the prior art, is supported directly on the shoulder 15 of the valve needle 3, from migrating a recess 25 of the fuel injection valve 1 during operation of the fuel injector 1 m, but remains completely in the inner pole 13 ,
  • the migration of the return spring 23 can cause malfunctions of the fuel injector 1 until the return spring 23 is jammed, uneven wear and tear and deformation of the shoulder 15 of the valve needle 5.
  • the guide sleeve 28 extends through the armature 20 and at least partially into the bore 32 of the inner pole 13 of the magnet coil 10.
  • the guide sleeve 28 is hollow-cylindrical and has in the region of the valve needle 3 and the armature 20 a tubular shaft 29 and in the area of the inner pole 13 a guide part 30.
  • the guide sleeve 28 _ can be produced in a simple and inexpensive manner, for example by turning.
  • the guide sleeve 28 • is partially spherical in its guide part 30 and dimensioned so that it bears against an inner wall 31 of the bore 32 of the inner pole 13. As a result, the guide part 30 of the guide sleeve 28 moves during the operation of the
  • Fuel fine injection valve 1 exclusively on the inner wall 31 of the inner pole 13.
  • the part-spherical shape contributes to low-friction guidance, whereby the dynamics of the fuel fine injection valve 1 are not impaired.
  • the axial length of the return spring 23 is always less than the axial length of the bore 32 of the inner pole 13, regardless of the switching position of the fuel injection valve 1. Accordingly, the return spring 23 never protrudes from the inner pole 13 and cannot enter the recess 25 of the fuel injection valve 1 emigrate.
  • valve 1 The fuel is finely injected into the fuel; valve 1
  • the fuel is passed over the 'recess 25, the guide sleeve 28, the tubular running valve needle 3 and Average trömö ff m ⁇ ngen 8 in valve needle 3, to the sealing seat.
  • valve needle 3 beats over the guide sleeve 28 by the return spring 23 with a bias such that the valve closing body 4 is held in sealing contact with the valve seat surface 6 and that
  • Fuel injector 1 is thereby kept closed.
  • a working gap 27 formed between the armature 20 and the inner pole 13 is closed, as is a forward stroke gap 19 formed between the flange 14 and the shoulder 15 of the valve needle 3.
  • the solenoid coil is energized 10 by means of the electric wire 11 via the plug contact 17, a magnetic field is built up, which 'attracts the armature 20 against the force of the return spring 23 to the inner pole.
  • the pre-stroke gap 19 between the flange 14 and the shoulder 15 of the valve needle 3 and then the working gap 27 between the armature 20 and the inner pole 13 is closed.
  • the fuel supplied via the central fuel supply 16 can flow through the bore 25 in the armature 20 and the valve needle 3 to the sealing seat.
  • the armature 20 drops from the inner pole 13 after the magnetic field has been sufficiently reduced by the pressure of the return spring 23, as a result of which the valve needle 3, which is in operative connection with the flange 14 on the armature 20, moves counter to the stroke direction.
  • the valve closing body 4 rests on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • Embodiment limited and z. • B. can also be used for fuel fine fuel valves 1 for mixture-compressing, self-igniting 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)

Abstract

Soupape d'injection (1) de carburant comportant une bobine d'aimant (10) qui coopère avec un induit (20) soumis à la force d'un ressort de rappel (23) et formant avec une aiguille (3) de soupape une partie de soupape axialement mobile. L'aiguille (3) de soupape porte un obturateur (4) de soupape qui forme un siège étanche avec un corps (5) de siège de soupape. La soupape (1) d'injection de carburant comporte en outre un pôle interne (13) et un pôle externe (9) qui forment un circuit magnétique avec la bobine d'aimant (10). Le ressort de rappel (23) est soumis à l'action d'un manchon de guidage (28) de manière telle que sa longueur axiale est inférieure à la longueur axiale d'un alésage (32) du pôle interne (13) lorsque la soupape d'injection (1) de carburant fonctionne.
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
DE10142302 2001-08-29
DE10142302A DE10142302A1 (de) 2001-08-29 2001-08-29 Brennstoffeinspritzventil
PCT/DE2002/002176 WO2003027487A1 (fr) 2001-08-29 2002-06-14 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1423603A1 true EP1423603A1 (fr) 2004-06-02
EP1423603B1 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
DE3825135A1 (de) * 1988-07-23 1990-01-25 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE3825134A1 (de) * 1988-07-23 1990-01-25 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil und verfahren zur herstellung
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
See references of WO03027487A1 *

Also Published As

Publication number Publication date
KR100878131B1 (ko) 2009-01-14
KR20040029046A (ko) 2004-04-03
DE10142302A1 (de) 2003-03-20
JP4200098B2 (ja) 2008-12-24
US20050258276A1 (en) 2005-11-24
WO2003027487A1 (fr) 2003-04-03
US7070128B2 (en) 2006-07-04
JP2005504218A (ja) 2005-02-10
EP1423603B1 (fr) 2007-08-22
DE50210773D1 (de) 2007-10-04

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