EP1364116B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1364116B1
EP1364116B1 EP02717970A EP02717970A EP1364116B1 EP 1364116 B1 EP1364116 B1 EP 1364116B1 EP 02717970 A EP02717970 A EP 02717970A EP 02717970 A EP02717970 A EP 02717970A EP 1364116 B1 EP1364116 B1 EP 1364116B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
armature
injection valve
valve needle
driving flange
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
EP02717970A
Other languages
German (de)
English (en)
Other versions
EP1364116A1 (fr
Inventor
Hubert Stier
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 EP1364116A1 publication Critical patent/EP1364116A1/fr
Application granted granted Critical
Publication of EP1364116B1 publication Critical patent/EP1364116B1/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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • an electromagnetic actuatable fuel injection valve in which for electromagnetic actuation an anchor with a electrically energized magnetic coil cooperates and the hub of the anchor over a valve needle on a Valve closing body is transmitted.
  • the valve closing body interacts with a valve seat.
  • the anchor is at the Valve needle is not rigidly attached, but is opposite to the Valve needle arranged axially movable.
  • a first Return spring acts on the valve needle Closing direction and thus holds the fuel injector in the de-energized, non-energized state of the solenoid coil closed.
  • the anchor is by means of a second Return spring in the stroke direction so acted upon that the armature in the rest position on a first, on the valve needle provided stop abuts.
  • the fuel injection valve according to the invention with the Features of claim 1 has In contrast, the advantage that one of the anchor stops, the the size of a Vorhubspalts for a Determine anchor freeway construction, in one piece with the Valve needle is formed, causing inaccuracies due to manufacturing tolerances due to the saving at least less impact on a component. It is the Anchor stop arranged on the outflow side of the armature in one piece formed with the valve needle and forms a collar, on which the armature rests.
  • Another advantage is that a Mitauerflansch that the Adhesion between the armature and the valve needle causes passes through the anchor and inserted into the valve needle is.
  • a prestroke spring acts on the armature at rest of the fuel injection valve, so that this is held in abutment on the downstream anchor stop.
  • Another advantage is the training of a Guide area on the driver flange, which is for an exact Guide the valve needle during its axial movement provides.
  • a fuel injection valve 1 is in the form of a Fuel injection valve for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running.
  • the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is in operative connection with a Valve closing body 4, with one on one Valve seat body 5 arranged valve seat surface 6 to a Tight fit together.
  • In the fuel injection valve 1 is it in the exemplary embodiment to an inward opening fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is preferably by means of welding with an outer pole 9 a Magnetic coil 10 connected.
  • the magnetic coil 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic coil 10th is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from.
  • the magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current.
  • the plug contact 17 is surrounded by a plastic sheath 18, the Inner pole 13 may be molded.
  • the valve needle 3 is in the present embodiment thin-walled hollow cylindrical and has a central recess 8. To the fuel line to Sealing seat serve flow openings 14, which are in the wall the valve needle 3 are introduced.
  • the valve needle 3 points at its upstream end a collar-shaped Anchor stop 32, which is integral with the valve needle 3 is trained.
  • Anchor 20 On the anchor stop 32 is based Anchor 20 off. This is about a Mit supportiveflansch 21 non-positively connected to the valve needle 3 in conjunction.
  • Of the Mitauerflansch 21 is also tubular trained and passes through the anchor 20 through a central Recess 33.
  • the Mitiliasch 21 is in the inflow-side end of the valve needle 3 is inserted and through a weld 15 is connected to the valve needle 3.
  • a return spring 23 which in the present design of the Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • the return spring 23 acts on the valve needle 3 via the Mitauerflansch 21st so that the valve closing body 4 in sealing contact the valve seat surface 6 is held.
  • the driver flange 21 has an outer circumferential surface, the valve needle 3 in its axial movement in the Actuation of the fuel injection valve 1 as to Leadership area supports mid-mismatches and subsequent malfunction of the fuel injection valve 1 by a jammed or jammed valve needle. 3 can be avoided. Downstream of the projection 34 the driver flange 21 has a guide section 36, which serves to guide the armature 20.
  • Vorhubfeder 22 acts on the armature 20 so that it is in contact with the Anchor stop 32 is held.
  • the fuel which has a central fuel supply 16 is fed and filtered by a filter element 25, is through the recess 8 of the valve needle 3, a Through opening 37 in Mit supportiveflansch 21 and over the Passage openings 14 directed to the injection opening 7.
  • the Fuel injection valve 1 is opposed by a seal 28 sealed a distribution line not shown.
  • the axial height of Vorhubspalts 30 is characterized by an armature 20th facing shoulder 35 of Mitauerflansches 21 defines after closing the Vorhubspalts 30 from the armature 20th is under attack, whereby the adhesion for actuating the Valve needle 3 is achieved.
  • the armature 20 After passing through the forward stroke against the force of Vorhubfeder 22, the armature 20 takes the Mit supportiveflansch 21, which is welded to the valve needle 3, and thereby the valve needle 3 in the stroke direction with.
  • the one with the Valve needle 3 in operative connection valve closing body 4 lifts off from the valve seat 6, whereby the over the Recess 8 in the valve needle 3 and through the Throughflow 14 guided to the injection opening 7 Fuel is sprayed.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 on the driver flange 21 from the inner pole 13, whereby the valve needle 3 against the Lifting direction moves.
  • the valve closing body 4 sets on the valve seat 6, and the Fuel injection valve 1 is closed.
  • the anchor 20 sits on the anchor stop 32.
  • Vorhubfeder 22 In addition to improving the opening dynamics causes the Vorhubfeder 22 a damping effect against Preller of Ankers 20 at Ankeransehlag 32 when closing the Fuel injection valve 1. Sets namely the armature 20 on the anchor stop 32, it may be a renewed, short-term lifting of the armature 20 from the anchor stop 32nd come. The Vorhubfeder 22 brakes the resulting Movement of the armature 20 in the stroke direction, so that the Mitauerflansch 21 and thus also the valve needle. 3 remain unaffected by the movement of the armature 20 and no unwanted, short-term opening operations of the Fuel injection valve 1 occur.
  • the invention is not limited to those shown Embodiments limited and for other forms anchors 20, for example for diving and flat anchors, as well as any designs of fuel injection valves. 1 applicable.

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 (10)

  1. Injecteur de carburant (1), notamment pour l'injection directe de carburant dans la chambre de combustion d'un moteur à combustion interne à compression de mélange à allumage commandé, comprenant un induit (20) qui coopère avec une bobine magnétique (10), et une aiguille de soupape (3) reliée à l'induit (20) par liaison par la force, sur laquelle un corps de fermeture de soupape (4) forme conjointement avec une surface de siège de soupape (6) un siège d'étanchéité,
    caractérisé en ce qu'
    au niveau d'une extrémité côté admission, l'aiguille de soupape (3) présente une butée d'induit (32) en forme de collerette formée d'une seule pièce avec l'aiguille de soupape (3) et contre laquelle l'induit (20) vient en butée, et une bride d'entraínement (21) traverse l'induit (20) de telle sorte qu'elle peut glisser dans l'extrémité côté admission de l'aiguille de soupape (3) et être reliée à celle-ci.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la bride d'entraínement (21) présente une saillie (34) sur laquelle prend appui côté admission un ressort de rappel (23).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce qu'
    un ressort de précourse (22) est disposé entre la saillie (34) de la bride d'entraínement (21) et l'induit (20).
  4. Injecteur de carburant selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la bride d'entraínement (21) est reliée à l'aiguille de soupape (3) par un joint de soudure (15).
  5. Injecteur de carburant selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    la bride d'entraínement (21) présente un épaulement (35) tourné vers l'induit (20).
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce qu'
    une distance axiale entre l'induit (20) et l'épaulement (35) définit une fente de précourse (30).
  7. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'aiguille de soupape (3) est formée par emboutissage profond.
  8. Injecteur de carburant selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    la bride d'entraínement (21) présente un segment de guidage (36) situé en aval de la saillie (34), et sur lequel l'induit (20) est guidé pendant le mouvement axial.
  9. Injecteur de carburant selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    la bride d'entraínement (21) est tubulaire et présente une ouverture de passage intérieure (37) pour le flux de carburant.
  10. Injecteur de carburant selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce qu'
    une surface enveloppe de la bride d'entraínement (21) sert dans la zone de la saillie (34) au guidage de l'aiguille de soupape (3) déplacée axialement.
EP02717970A 2001-02-24 2002-02-25 Soupape d'injection de carburant Expired - Lifetime EP1364116B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10108945A DE10108945A1 (de) 2001-02-24 2001-02-24 Brennstoffeinspritzventil
DE10108945 2001-02-24
PCT/DE2002/000661 WO2002068810A1 (fr) 2001-02-24 2002-02-25 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1364116A1 EP1364116A1 (fr) 2003-11-26
EP1364116B1 true EP1364116B1 (fr) 2005-11-02

Family

ID=7675361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02717970A Expired - Lifetime EP1364116B1 (fr) 2001-02-24 2002-02-25 Soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US6932283B2 (fr)
EP (1) EP1364116B1 (fr)
JP (1) JP4335528B2 (fr)
KR (1) KR100851767B1 (fr)
CN (1) CN100402831C (fr)
DE (2) DE10108945A1 (fr)
WO (1) WO2002068810A1 (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10361761A1 (de) * 2003-12-29 2005-07-28 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005052255B4 (de) * 2005-11-02 2020-12-17 Robert Bosch Gmbh Brennstoffeinspritzventil
US7472844B2 (en) * 2005-12-21 2009-01-06 Caterpillar Inc. Fuel injector nozzle with tip alignment apparatus
JP4790441B2 (ja) * 2006-02-17 2011-10-12 日立オートモティブシステムズ株式会社 電磁燃料噴射弁及びその組立て方法
US7565893B2 (en) 2007-09-10 2009-07-28 Gm Global Technology Operations, Inc. Spark ignited direct injection flow geometry for improved combustion
WO2009080671A1 (fr) 2007-12-21 2009-07-02 Robert Bosch Gmbh Soupape d'injection de carburant
US8651323B2 (en) * 2008-02-07 2014-02-18 Kenneth R. Balkin Hand protection barrier dispenser
JP5152024B2 (ja) * 2009-02-04 2013-02-27 株式会社デンソー 燃料噴射弁
EP2333297B1 (fr) * 2009-12-11 2013-03-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
JP2011185264A (ja) * 2010-02-11 2011-09-22 Denso Corp インジェクタ
CN102003317B (zh) * 2010-11-16 2012-06-06 亚新科南岳（衡阳）有限公司 汽油直喷喷油器
JP5862941B2 (ja) * 2011-11-08 2016-02-16 株式会社デンソー 燃料噴射弁
KR101361809B1 (ko) * 2011-12-23 2014-02-11 대동공업주식회사 유압발생모듈 및 이를 포함하는 전기구동식 다목적 운반차량
DE102012202253A1 (de) * 2012-02-15 2013-08-22 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102012203124A1 (de) 2012-02-29 2013-08-29 Robert Bosch Gmbh Einspritzventil
DE102012207406A1 (de) * 2012-05-04 2013-11-07 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102012208136A1 (de) 2012-05-15 2013-11-21 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102012210415A1 (de) * 2012-06-20 2013-12-24 Robert Bosch Gmbh Einspritzventil
DE102012215779A1 (de) * 2012-09-06 2014-03-06 Robert Bosch Gmbh Einspritzventil
EP2706220B1 (fr) * 2012-09-07 2016-06-29 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102012220484A1 (de) 2012-11-09 2014-05-15 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
EP2837813B1 (fr) * 2013-08-14 2016-04-06 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102013218261A1 (de) 2013-09-12 2015-03-12 Robert Bosch Gmbh Ventil zum Einspritzen von Kraftstoff
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
DE102013221320A1 (de) 2013-10-21 2015-04-23 Robert Bosch Gmbh Verfahren zur Sicherstellung des Kaltstarts eines mit Ethanol-Kraftstoff betriebenen Ottomotors
DE102013222613A1 (de) 2013-11-07 2015-05-07 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102013222596A1 (de) 2013-11-07 2015-05-07 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102013222590A1 (de) 2013-11-07 2015-05-21 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102013223453A1 (de) 2013-11-18 2015-05-21 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102013223458A1 (de) 2013-11-18 2015-05-21 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
EP3139030A1 (fr) * 2015-09-03 2017-03-08 Continental Automotive GmbH Injecteur pour moteur à combustion
US10871134B2 (en) * 2015-09-24 2020-12-22 Vitesco Technologies GmbH Valve assembly for an injection valve and injection valve
DE102015226181A1 (de) * 2015-12-21 2017-06-22 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102018218678A1 (de) 2018-10-31 2020-04-30 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil
DE102018221086A1 (de) 2018-12-06 2020-06-10 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil

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Publication number Priority date Publication date Assignee Title
DE3314899A1 (de) 1983-04-25 1984-10-25 Mesenich, Gerhard, Dipl.-Ing., 4630 Bochum Federanordnung mit zusatzmasse zur verbesserung des dynamischen verhaltens von elektromagnetsystemen
US4568021A (en) 1984-04-02 1986-02-04 General Motors Corporation Electromagnetic unit fuel injector
DE8802722U1 (de) * 1988-03-01 1988-04-14 Industrial Technology Research Institute, Hsinchu Minitreibstoffinjektor
US5299776A (en) 1993-03-26 1994-04-05 Siemens Automotive L.P. Impact dampened armature and needle valve assembly
US5421521A (en) * 1993-12-23 1995-06-06 Caterpillar Inc. Fuel injection nozzle having a force-balanced check
US5494223A (en) * 1994-08-18 1996-02-27 Siemens Automotive L.P. Fuel injector having improved parallelism of impacting armature surface to impacted stop surface
US5605289A (en) * 1994-12-02 1997-02-25 Caterpillar Inc. Fuel injector with spring-biased control valve
US5961097A (en) * 1996-12-17 1999-10-05 Caterpillar Inc. Electromagnetically actuated valve with thermal compensation
US6021963A (en) 1997-12-23 2000-02-08 Caterpillar Inc. Cartridge control valve with top mounted solenoid and flat valve seat for a fuel injector
DE19820341C2 (de) * 1998-05-07 2000-04-06 Daimler Chrysler Ag Betätigungsvorrichtung für eine Hochdruck-Einspritzdüse für flüssige Einspritzmedien
DE19849210A1 (de) 1998-10-26 2000-04-27 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
CN100402831C (zh) 2008-07-16
JP4335528B2 (ja) 2009-09-30
EP1364116A1 (fr) 2003-11-26
DE50204771D1 (de) 2005-12-08
DE10108945A1 (de) 2002-09-05
US6932283B2 (en) 2005-08-23
JP2004518858A (ja) 2004-06-24
KR20020089501A (ko) 2002-11-29
CN1457391A (zh) 2003-11-19
US20030160117A1 (en) 2003-08-28
WO2002068810A1 (fr) 2002-09-06
KR100851767B1 (ko) 2008-08-13

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