EP1309795B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1309795B1
EP1309795B1 EP01955272A EP01955272A EP1309795B1 EP 1309795 B1 EP1309795 B1 EP 1309795B1 EP 01955272 A EP01955272 A EP 01955272A EP 01955272 A EP01955272 A EP 01955272A EP 1309795 B1 EP1309795 B1 EP 1309795B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
sealing ring
face
valve according
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
EP01955272A
Other languages
German (de)
English (en)
Other versions
EP1309795A1 (fr
Inventor
Ferdinand Reiter
Guenther Hohl
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 EP1309795A1 publication Critical patent/EP1309795A1/fr
Application granted granted Critical
Publication of EP1309795B1 publication Critical patent/EP1309795B1/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
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention is based on a fuel injection valve with sealing ring according to the preamble of claim 1.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that there is a secure seal of the Annular gaps between receiving bore and fuel injector even with a pivoting of Fuel injection valve to the axis of the receiving bore over a relatively large angular range allows. Furthermore is the solution according to the invention to seal the annular gap, easy and inexpensive to manufacture.
  • the fuel injection valve a Valve seat carrier or nozzle body as a deep-drawn part have, whose part-spherical surface particularly inexpensive, for example by rolling, made can be.
  • Fuel injection valve 1 with a sealing ring 1a is in the shape of a fuel injection valve for Fuel injection systems of mixture compression, spark-ignited internal combustion engines running.
  • the Fuel injector 1 is not closer in here shown receiving bore of the cylinder head 1b used.
  • the cylinder head 1b is only in the range of Sealing ring 1a shown as a sectional area, as this for the invention considerable scope in the following figures will be described in more detail.
  • the fuel injection valve 1 is particularly suitable for direct injection of Fuel in a combustion chamber, not shown a Internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is guided.
  • the valve needle 3 is connected to a valve closing body 4 in Operative connection, with a on a valve seat body. 5 arranged valve seat surface 6 to a sealing seat interacts.
  • the fuel injection valve 1 acts it is in the exemplary embodiment to an inwardly opening Fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against the outer pole 9 of a magnetic coil 10, the serves as an actuator, sealed.
  • the magnet coil 10 is in encapsulated a coil housing 11 and a coil carrier 12 wound, which at an inner pole 13 of the solenoid 10 is present.
  • the inner pole 13 and the outer pole 9 are through a gap 26 separated from each other and based on a connecting member 29 from.
  • the magnetic coil 10 is over a line 19 from one via an electrical Plug contact 17 energized electrical power.
  • the Plug contact 17 is of a plastic casing 18th surrounded, which can be molded on the inner pole 13.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is a Anchor 20. This is frictionally connected via a flange 21 with the valve needle 3 in conjunction, by a Weld 22 is connected to the flange 21.
  • On the Flange 21 is supported by a return spring 23, which in the present design of the fuel injection valve. 1 is biased by a sleeve 24.
  • the armature 20 and the valve seat body fifth run fuel channels 30a to 30c, the fuel, which fed via a central fuel supply 16 and is filtered by a filter element 25, for Lead spray opening 7.
  • the fuel injection valve 1 is by a seal 28 against a not further sealed fuel supply shown sealed. Of the drawn angle ⁇ clarifies the desired Tilting of the fuel injection valve 1 to a Manufacturing tolerance or installation tolerances between the not shown fuel inlet and the receiving bore compensate.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, causing the with the valve needle 3 operatively connected flange 21st moved against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, causing the Valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • Fig. 2 shows an illustration only in the area of Section III of Fig. 1 of an inventive Fuel injector 1 different fuel injector 31 according to the prior art with a Sealing ring 33 in a detail that the neckline III of Fig. 1 corresponds.
  • the fuel injection valve 31 has a circumferential groove 32 shown here in cross-section, in which a sealing ring 33 is located.
  • This sealing ring 33 seals the annular gap 34 between the fuel injection valve 31st and a receiving bore 39 of the cylinder head 1b, from a combustion chamber, not shown.
  • a circumferential elevation 36 in the groove 32 supports the Sealing effect of the cross-section substantially rectangular Sealing ring 33.
  • Fig. 3 shows the detail III of Fig. 1, a Inventive fuel injection valve 1 represents. Corresponding components are the same Provided with reference numerals.
  • the fuel injection valve 1 has the outer periphery his nozzle body 2, a groove 37 in which the sealing ring 1a lies. This sealing ring 1 a seals the annular gap 38, the between fuel injection valve 1 and receiving bore 39 the cylinder head 1b is not opposite one shown combustion chamber.
  • a part spherical Contact surface 40 of the sealing ring 1a which is concave in section is, acts with a corresponding part-spherical Counter surface 40a of the fuel injection valve 1 together.
  • the part-spherical surfaces 40, 40 a have, for example such a radius r on that the center point on a Center axis 41 of the fuel injection valve 1 and the Valve needle 3 is located.
  • the surface pressure of the sealing ring 1a continues to be uniform.
  • Slip on the part-spherical surfaces 40,40a Fuel injection valve 1 and sealing ring 1a in a adapted position, without causing a squeezing of the Sealing ring 1a comes because the center of rotation of the teilkugelförmnigen surfaces 40,40a exactly on the central axis 41 of the receiving bore 39 and thus at the pivot point of a Tilting by the angle ⁇ is. This is up to relative large angles possible.
  • the sealing ring 1a made of Teflon®.
  • the Sealing ring 1a also other known sealing materials, such as Elastomer materials are used.
  • the part-spherical mating surface 40a of the Fuel injection valve 1 can be particularly inexpensive be prepared by the nozzle body 2 and a Valve seat support is provided as Blechtiefjeeil, at the part-spherical mating surface 40a, for example is formed by rolling.
  • Fig. 4 shows in an enlarged view accordingly of section III in Fig. 1 another inventive Execution of a fuel injection valve 1 with a Sealing ring 1a, in the formation of the sealing ring 1a differs. Therefore, here are corresponding to each other Components provided with the same reference numerals.
  • the fuel injection valve 1 has the outer periphery his nozzle body 2, a groove 37 in which the sealing ring 1a lies.
  • This sealing ring 1 a seals the annular gap 38, the between fuel injection valve 1 and receiving bore 39 the cylinder head 1b is not opposite one shown combustion chamber.
  • the sealing ring 1a has in one combustion chamber side in the annular gap 38 between receiving bore 39 and fuel injector 1 lying surface a circumferential lower groove 42.
  • a brennraumabgewand in the annular gap 38 between receiving bore 39 and Fuel injector 1 lying surface has the Seal 1 a circumferential upper groove 43.
  • Upper groove 43 and lower groove 42 are in the example set forth herein executed in each case about 1 ⁇ 4 of the height of the sealing ring 1a.
  • a part-spherical mating surface 40a of the Fuel injection valve 1 acts with a corresponding part spherical contact surface 40 of the sealing ring 1a, which in Section is concave, together.
  • the radius r of both surfaces 40,40a is chosen so that the center on a Center axis 41 of the fuel injection valve 1 and the Valve needle 3 is located.
  • the fuel injector 1 can control tolerances compensate to be mounted tilted at an angle ⁇ .
  • the surface pressure in the lower Section of the part-spherical contact surface 40 and Counter surface 40 a increases when in the lower groove 42 over the Annular gap 38 of the combustion chamber pressure can act. This increases the sealing effect.
  • lower groove 42 and upper groove 43rd also the risk of deformation of the sealing ring 1a is at the tilting is reduced by the angle ⁇ , since by one to produce sufficient sealing effect, not so high Preload by the elastic deformation of the sealing ring 1a is necessary and part spherical contact surface 40 and Counter surface 40a can slide on each other easier. Yet sufficiently high surface pressures can be achieved in order to to prevent a breakthrough of combustion gases.

Claims (9)

  1. Injecteur de carburant (1) qui s'introduit dans un perçage de réception (39) d'une culasse de cylindre (1b) d'un moteur à combustion interne et comportant une bague d'étanchéité (1a) disposée sur le pourtour de l'injecteur de carburant (1) dans le perçage de réception (39),
    caractérisé en ce que
    la bague d'étanchéité (1a) présente vers l'injecteur de carburant (1) une surface de contact (40) en segment de sphère qui s'applique contre une surface opposée (40a) en segment de sphère correspondant de l'injecteur de carburant (1).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la surface de contact (40) en segment de sphère sur la bague d'étanchéité (1a) a une section transversale concave.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    dans une surface tournée vers la chambre de combustion et située dans un intervalle annulaire (38) entre le perçage de réception (39) et l'injecteur de carburant (1), la bague d'étanchéité (1a) a une rainure (42) inférieure périphérique.
  4. Injecteur de carburant selon l'une des revendications 1 à 3,
    caractérisé en ce que
    dans une surface détournée de la chambre de combustion et située dans un intervalle annulaire (38) entre le perçage de réception (39) et l'injecteur de carburant (1), la bague d'étanchéité (1a) a une rainure (43) supérieure périphérique.
  5. Injecteur de carburant selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le rayon (r) de la surface de contact (40) en segment de sphère sur la bague d'étanchéité (1a) et de la surface opposée (40a) en segment de sphère sur l'injecteur de carburant (1) a une dimension telle que le centre de rotation de ces surfaces (40, 40a) en segment de sphère se trouve sur un axe central (41) de l'injecteur de carburant (1).
  6. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la bague d'étanchéité (1a) est placée dans une rainure (37) périphérique de l'injecteur de carburant (1).
  7. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    la rainure (37) destinée à recevoir la bague d'étanchéité (1a) est façonnée sur un corps de buses (2) ou sur un support de siège de soupape.
  8. Injecteur de carburant selon la revendication 7,
    caractérisé en ce que
    le corps de buses (2) ou le support de siège de soupape est une pièce emboutie sur laquelle est façonnée une surface opposée (40a) en segment de sphère sur l'injecteur de carburant (1).
  9. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la bague d'étanchéité (1a) est en Téflon®.
EP01955272A 2000-08-05 2001-07-20 Soupape d'injection de carburant Expired - Lifetime EP1309795B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10038300 2000-08-05
DE10038300A DE10038300A1 (de) 2000-08-05 2000-08-05 Brennstoffeinspritzventil
PCT/DE2001/002764 WO2002012717A1 (fr) 2000-08-05 2001-07-20 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1309795A1 EP1309795A1 (fr) 2003-05-14
EP1309795B1 true EP1309795B1 (fr) 2005-11-30

Family

ID=7651457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01955272A Expired - Lifetime EP1309795B1 (fr) 2000-08-05 2001-07-20 Soupape d'injection de carburant

Country Status (10)

Country Link
US (1) US6615802B2 (fr)
EP (1) EP1309795B1 (fr)
JP (1) JP5231705B2 (fr)
KR (1) KR20020037058A (fr)
CN (1) CN1237267C (fr)
BR (1) BR0107072A (fr)
CZ (1) CZ20021160A3 (fr)
DE (2) DE10038300A1 (fr)
RU (1) RU2270930C2 (fr)
WO (1) WO2002012717A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015126548A1 (fr) 2014-02-21 2015-08-27 Ibc Pharmaceuticals, Inc. Traitement d'une maladie par induction d'une réponse immune à des cellules exprimant le trop-2

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JP4529321B2 (ja) * 2000-10-13 2010-08-25 Ｎｏｋ株式会社 インジェクター用燃焼ガスシール
DE60121044T2 (de) * 2000-12-26 2006-12-07 Nok Corp. Gasdichtung für injektoren
DE10321163B4 (de) * 2003-05-12 2017-01-05 Robert Bosch Gmbh Verfahren zum Anbringen eines metallischen Dichtelements an einem Grundkörper eines Brennstoffeinspritzventils, sowie Brennstoffeinspritzventil
JP4267433B2 (ja) * 2003-11-25 2009-05-27 トヨタ自動車株式会社 燃料噴射弁用燃焼ガスシール
JP2005248846A (ja) * 2004-03-04 2005-09-15 Bosch Automotive Systems Corp 燃料通路のシール構造及びそのシール構造を備えた燃料噴射弁
EP1574702B1 (fr) * 2004-03-11 2006-06-07 Delphi Technologies, Inc. Méthode d'assemblage d'un injecteur de carburant
DE102005006818A1 (de) * 2005-02-15 2006-08-17 Volkswagen Mechatronic Gmbh & Co. Kg Dichtungseinrichtung für einen Kraftstoffinjektor sowie Verfahren zum Abdichten
DE102006048727A1 (de) * 2006-10-16 2008-04-17 Robert Bosch Gmbh Kraftstoffinjektor mit Magnetventil
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EP2080893B1 (fr) * 2008-01-18 2010-11-17 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
US7942132B2 (en) 2008-07-17 2011-05-17 Robert Bosch Gmbh In-line noise filtering device for fuel system
EP2148082B1 (fr) * 2008-07-24 2011-10-19 Continental Automotive GmbH Arrangement de couplage pour une soupape d'injection et soupape d'injection
DE102009045692A1 (de) 2009-10-14 2011-04-21 Robert Bosch Gmbh Verfahren zur Montage eines Dichtungsrings
CN103403333B (zh) * 2011-02-10 2015-10-21 本田技研工业株式会社 燃料箱的密封结构及具备该燃料箱的密封结构的车辆
EP2607679B1 (fr) * 2011-12-21 2015-02-25 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
JP5867158B2 (ja) * 2012-02-24 2016-02-24 Nok株式会社 密封構造
DE102012209353B4 (de) 2012-06-04 2018-12-06 Continental Automotive Gmbh Prüfvorrichtung zum Testen einer Flachbaugruppe
JP5831510B2 (ja) 2012-11-20 2015-12-09 株式会社デンソー 燃料噴射弁および燃料噴射弁の取付方法
DE102013200909A1 (de) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement
US9664162B2 (en) * 2013-02-18 2017-05-30 Nok Corporation Sealing structure
JP5910586B2 (ja) * 2013-08-23 2016-04-27 株式会社デンソー 燃料噴射弁
KR101686405B1 (ko) * 2015-06-19 2016-12-16 주식회사 태하 볼업 및 잔압 완화 기능을 갖는 유체 디스펜서
DE102017218007A1 (de) * 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102018216970A1 (de) * 2018-10-04 2020-04-09 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102018221403A1 (de) 2018-12-11 2020-06-18 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
JP7370779B2 (ja) * 2019-09-19 2023-10-30 Nok株式会社 密封構造
US20230349467A1 (en) * 2020-11-20 2023-11-02 Nok Corporation Sealing structure and assembling method of sealing structure
DE102021104408A1 (de) 2021-02-24 2022-08-25 Robert Bosch Gesellschaft mit beschränkter Haftung Brennraumdichtung für einen Kraftstoffinjektor und Brennkraftmaschine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015126548A1 (fr) 2014-02-21 2015-08-27 Ibc Pharmaceuticals, Inc. Traitement d'une maladie par induction d'une réponse immune à des cellules exprimant le trop-2

Also Published As

Publication number Publication date
BR0107072A (pt) 2002-06-25
WO2002012717A1 (fr) 2002-02-14
JP2004506135A (ja) 2004-02-26
DE50108253D1 (de) 2006-01-05
US6615802B2 (en) 2003-09-09
RU2270930C2 (ru) 2006-02-27
KR20020037058A (ko) 2002-05-17
CN1237267C (zh) 2006-01-18
CZ20021160A3 (cs) 2003-09-17
CN1386168A (zh) 2002-12-18
JP5231705B2 (ja) 2013-07-10
EP1309795A1 (fr) 2003-05-14
US20020179057A1 (en) 2002-12-05
DE10038300A1 (de) 2002-02-14

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