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EP0189863B1 - Soupape d'injection pour moteurs à combustion interne à compression du mélange - Google Patents

Soupape d'injection pour moteurs à combustion interne à compression du mélange Download PDF

Info

Publication number
EP0189863B1
EP0189863B1 EP86100945A EP86100945A EP0189863B1 EP 0189863 B1 EP0189863 B1 EP 0189863B1 EP 86100945 A EP86100945 A EP 86100945A EP 86100945 A EP86100945 A EP 86100945A EP 0189863 B1 EP0189863 B1 EP 0189863B1
Authority
EP
European Patent Office
Prior art keywords
injection valve
sleeve
sealing ring
injection
wall opening
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
Application number
EP86100945A
Other languages
German (de)
English (en)
Other versions
EP0189863A3 (en
EP0189863A2 (fr
Inventor
Jurij Gartner
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0189863A2 publication Critical patent/EP0189863A2/fr
Publication of EP0189863A3 publication Critical patent/EP0189863A3/de
Application granted granted Critical
Publication of EP0189863B1 publication Critical patent/EP0189863B1/fr
Expired 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y10S251/90—Valves with o-rings

Definitions

  • the invention relates to a fuel injector of the type specified in the preamble of claim 1.
  • the O-ring arranged on the mouthpiece of the injection valve is pressed radially when inserted into the wall opening in the intake manifold wall.
  • the wall opening usually has a chamfer on the plug-in side, by means of which the pressing of the O-ring is introduced into the wall opening when the injection valve is inserted.
  • this chamfer is generally relatively low in the area around the wall opening in the direction of insertion and is formed at a relatively large cone angle. This results in a relatively sharp edge at the transition from the wall opening in the chamfer, which can lead to damage to the O-ring if the mouthpiece of the injection nozzle is eccentrically positioned for the wall opening.
  • EP-A 0154209 (Art. 54 (3) EPC), which represents a fictitious state of the art, has already been proposed to arrange a centering device on the free end of the mouthpiece. This has proven itself well as a centering aid, but it was also not always possible to avoid damage to the sealing ring, in particular if, despite the centering aid, the injection valve was placed at an angle and was forcefully pressed into the mounting hole.
  • the invention has for its object to develop an injection valve of the generic type in such a way that damage to the sealing ring during the assembly is excluded.
  • the sleeve according to the invention protects the sealing ring both in the time after the injection valve has been completed and until it is installed, and also during installation. Moving the sleeve and thus releasing the sealing ring is only accomplished when the injector is installed. Protection of the sealing ring during assembly is achieved in that the sleeve assumes a centering function due to its outer contour. This also greatly facilitates the attachment of the injection valve, in particular if several injection valves are to be installed at the same time.
  • Another expedient development of the invention according to claim 3 has the advantage that a safe holding of the sleeve is made possible in the time in which the injection valve has not yet been installed without further aids.
  • no further aids such as adhesive strips, clips, etc. are required to use the sleeve as protection for the sealing ring until the injection valve is installed.
  • FIG. 1 the front part of an injection valve 1 for a mixture-compressing internal combustion engine, not shown, is shown schematically. It carries on its front mouthpiece 2 a sealing ring 3, which is preferably designed as an O-ring. This is supported in the axial direction on a shoulder 4 and 4.1. The sealing ring 3 is enclosed by a sleeve 5, which is guided on a cylindrical section 6 of the injection valve 1.
  • the injection valve 1 is inserted with its mouthpiece 2 into a wall opening 8 of the suction pipe 7, the mounting of the injection valve 1 essentially through the pressed sealing ring 3 between the wall opening 8 and the mouthpiece 2 is achieved.
  • the wall opening or receiving bore 8 has a chamfer 9 on the insertion side.
  • the sleeve 5 provided according to the invention has at its front end a conical outer contour 10 which merges into a cylindrical section 11.
  • the cone angle is twice the chamfer angle, so that the sleeve 5 can be used at the same time for centering the injection valve 1 during the insertion process.
  • the inner contour of the sleeve 5 consists of three sections, two cylindrical sections 12 and 13 and a conical section 14 being provided.
  • the diameter of the cylindrical inner section 12 corresponds in its diameter to the outer diameter of the cylindrical section 6 of the injection valve 1.
  • the second cylindrical section 13 is smaller in diameter than the section 12. Its diameter corresponds approximately to the outer diameter of the sealing ring 3. However, it is slightly smaller, so that the sleeve 5 is securely held by the sealing ring 3 in the unassembled state and protects it against damage and contamination.
  • the transition between the two cylindrical sections 12 and 13 is preferably crowned. This makes it easier to push the sleeve onto the injection valve.
  • the smallest diameter of the cone is slightly smaller than the inside diameter of the wall opening 8. This ensures that when the injection valve 1 is inserted, the sealing ring 3 does not come into contact with the inside edge of the chamfer 9 and is thereby damaged.
  • FIG. 2 the injector 1 is shown in its installed position.
  • the injection valve 1 is displaced axially under slight pressure.
  • the sealing ring 3 is squeezed by the conical section 14 while simultaneously axially pushing forward through the shoulder 4 into the wall opening 8. This holds the injection valve 1, and at the same time the wall opening 8 is sealed.
  • a further seal to the outside, mainly against soiling, is formed here by the sleeve 5, which continues to be supported with its conical section 10 on the chamfer 9 in the installed state.
  • the sleeve 5 When pulling out the injection valve 1, the sleeve 5 is pressed by hand against the chamfer 9. The sealing ring 3 is taken along by the shoulder 4.1 when it is pulled out and now slides back over the conical inner section 14 into the sleeve. Damage caused by the edges of the receiving bore or the chamfer 9 is therefore excluded.
  • a radially arranged pin can be provided as an end stop on the cylindrical section 6 of the injection valve, which pin leads the sleeve over an elongated hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

1. Soupape d'injection (1) pour l'injection dans la tubulure d'aspiration de moteurs à combustion interne à compression du mélange, qui est maintenue du côté injection par un raccord enfon- çable au moyen d'une embouchure (2) dans une percée de paroi (8) de la tubulure d'aspiration (7) pourvue d'un chanfrein, avec intercalation d'un joint d'étanchéité en caoutchouc (3) disposé dans une rainure annulaire de l'embouchure (2), caractérisée en ce qu'il est disposé, dans la région d'extrémité libre de l'embouchure (2), un manchon (5) mobile sur une partie cylindrique de la soupape d'injection (1) avec un segment intérieur (12) cylindrique approprié, qui présente, à son extrémité antérieure du côté injection, un segment (10) avec un contour extérieur de forme conique, qui est associé au chanfrein (9) de la percée de la paroi et en ce que le joint d'étanchéité (3) est, à l'état démonté de la soupape d'injection (1), enserré par le manchon (5) maintenu dans sa première position extrême avancée du côté de t'injection, et est, à l'état monté de la soupape d'injection (1), dégagé du manchon (5) qui se trouve dans la deuxième position extrême reculée.
2. Soupape d'injection selon la revendication 1, caractérisée en ce que le manchon (5) est pourvu dans la région du segment (10) pourvu du contour extérieur conique d'un segment intérieur conique (14), dont le plus petit diamètre est légèrement inférieur au diamètre de la percée de paroi (8).
3. Soupape d'injection selon la revendication 2, caractérisée en ce qu'il est disposé à la suite du segment intérieur (12) cylindrique du manchon (5) guidé sur la partie cylindrique (6) de la soupape d'injection (1), en se plaçant dans le sens de l'enfoncement, un autre segment cylindrique (13) de plus petit diamètre qui, dans l'état démonté de la soupape d'injection (1), est associé au joint d'étanchéité (3) et qui, dans un but de maintien du manchon (5) dans sa position extrême avancée par le joint d'étanchéité (3), est légèrement inférieur au diamètre de celui-ci.
4. Soupape d'injection de carburant selon la revendication 3, caractérisée en ce que le demi-angle de cône du segment (10) pourvu du contour extérieur conique à l'extrémité du manchon (5) correspond à l'angle du chanfrein (9) de la percée de paroi.
EP86100945A 1985-01-29 1986-01-24 Soupape d'injection pour moteurs à combustion interne à compression du mélange Expired EP0189863B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3502919 1985-01-29
DE19853502919 DE3502919A1 (de) 1985-01-29 1985-01-29 Einspritzventil fuer gemischverdichtende brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0189863A2 EP0189863A2 (fr) 1986-08-06
EP0189863A3 EP0189863A3 (en) 1988-04-27
EP0189863B1 true EP0189863B1 (fr) 1989-12-20

Family

ID=6261052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100945A Expired EP0189863B1 (fr) 1985-01-29 1986-01-24 Soupape d'injection pour moteurs à combustion interne à compression du mélange

Country Status (4)

Country Link
US (1) US4647012A (fr)
EP (1) EP0189863B1 (fr)
JP (1) JPS61218770A (fr)
DE (1) DE3502919A1 (fr)

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DE3406487A1 (de) * 1984-02-23 1985-08-29 Bayerische Motoren Werke AG, 8000 München Einspritzventil fuer gemischverdichtende brennkraftmaschinen, insbesondere fuer einzelsaugrohr-einspritzung
RU1839701C (ru) * 1988-01-20 1993-12-30 Ханс Отто Мит (DE) Клапан с защитным элементом дл уплотнени
JPH0622140Y2 (ja) * 1988-02-15 1994-06-08 臼井国際産業株式会社 フユーエルデリバリパイプ
DE3806906A1 (de) * 1988-03-03 1989-09-14 Opel Adam Ag Vorrichtung zur befestigung eines in einen saugkanal einer brennkraftmaschine einspritzenden kraftstoffeinspritzventils
US5080133A (en) * 1991-04-10 1992-01-14 Allied-Signal Inc. Control valve assembly
JPH04342873A (ja) * 1991-05-20 1992-11-30 Toyota Motor Corp 燃料噴射内燃機関のインジェクタのシール構造
US5247918A (en) * 1992-09-17 1993-09-28 Siemens Automotive L.P. Sealing a direct injection fuel injector to a combustion chamber
US5487368A (en) * 1994-07-29 1996-01-30 Caterpillar Inc. Combustion gas seal assembly adapted for a fuel injector
US5492371A (en) * 1994-11-02 1996-02-20 Itt Corporation Garter spring stuffer pack quick connector
JP3048066B2 (ja) * 1995-01-19 2000-06-05 レグリ ソシエテ アノニム 管を固定要素に接続するクイック−カップリング装置
JP3329998B2 (ja) * 1995-10-17 2002-09-30 三菱電機株式会社 筒内噴射用燃料噴射弁
DE19605956A1 (de) * 1996-02-17 1997-08-21 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
US5724946A (en) * 1996-11-22 1998-03-10 Siemens Automotive Corporation Fuel rail and injector assembly
US5752487A (en) * 1997-06-11 1998-05-19 Caterpillar Inc. Injector combustion gas seal
JP2000145581A (ja) * 1998-11-13 2000-05-26 Sanshin Ind Co Ltd 筒内燃料噴射式エンジン
JP4067237B2 (ja) 1999-05-27 2008-03-26 ヤマハマリン株式会社 筒内噴射式エンジン
FR2795803B1 (fr) * 1999-06-30 2001-08-17 Legris Sa Dispositif de raccordement rapide a joint protege d'un tube a un element rigide
DE10065225B4 (de) * 2000-12-27 2005-09-22 Fränkische Rohrwerke Gebr. Kirchner GmbH + Co. KG Verbindungsanordnung
DE50110145D1 (de) * 2001-01-12 2006-07-27 Ford Global Tech Inc Geraeuschreduzierende Anordnung von Unterlegscheiben unter einer Einspritzduese
DE10108195A1 (de) * 2001-02-21 2002-08-22 Bosch Gmbh Robert Brennstoffeinspritzventil
US6892871B2 (en) * 2002-03-11 2005-05-17 Cummins-Allison Corp. Sensor and method for discriminating coins of varied composition, thickness, and diameter
US8113547B2 (en) * 2002-03-22 2012-02-14 Cooper Standard Automotive Inc. Snap mount fluid quick connector
US7029036B2 (en) * 2004-03-09 2006-04-18 Itt Manufacturing Enterprises, Inc. Rotatable two part quick connection
US7195004B2 (en) * 2002-09-25 2007-03-27 Siemens Vdo Automotive Corporation Fuel injector cup with improved lead-in dimensions for reduced insertion force
US6757950B2 (en) 2002-11-15 2004-07-06 Itt Manufacturing Enterprises, Inc. Rotatable quick connector stuffer pin
US8037871B2 (en) * 2003-08-12 2011-10-18 Cameron International Corporation Seal assembly for a pressurized fuel feed system for an internal combustion engine
US7055869B2 (en) * 2004-01-27 2006-06-06 Itt Manufacturing Enterprises, Inc. False insertion protection top hat for fluid quick connectors
DE102004049277A1 (de) * 2004-10-09 2006-04-13 Robert Bosch Gmbh Dämpfungselement für ein Brennstoffeinspritzventil
US20060146877A1 (en) * 2004-12-31 2006-07-06 Bea Systems, Inc. Multipool using automatically maintained active connection pool list
DE102005006818A1 (de) * 2005-02-15 2006-08-17 Volkswagen Mechatronic Gmbh & Co. Kg Dichtungseinrichtung für einen Kraftstoffinjektor sowie Verfahren zum Abdichten
US7513242B2 (en) * 2007-05-03 2009-04-07 Cummins Inc. Fuel injector assembly with injector seal retention
DE102009045692A1 (de) 2009-10-14 2011-04-21 Robert Bosch Gmbh Verfahren zur Montage eines Dichtungsrings
DE112010005428B4 (de) * 2010-03-30 2017-08-17 Toyota Jidosha Kabushiki Kaisha Vibrationsisolator für ein Kraftstoffeinspritzventil und ein Stützaufbau für ein Kraftstoffeinspritzventil
WO2012014326A1 (fr) 2010-07-30 2012-02-02 トヨタ自動車 株式会社 Isolateur amortisseur de vibrations pour injecteur de carburant
EP2469840A1 (fr) * 2010-12-21 2012-06-27 Thomson Licensing Redimensionnment dynamique d'un guide électronique de programmes
CN109958564B (zh) * 2017-12-26 2023-09-29 天津大学（青岛）海洋工程研究院有限公司 一种用于柴油机共轨式电控喷油器的电磁阀
DE102019215695A1 (de) * 2019-10-11 2021-04-15 Kennametal Inc. Hydraulische Werkzeughalterung sowie Dichtkolben für eine solche
CN111805568B (zh) * 2020-07-31 2021-11-16 苏州鼎纳自动化技术有限公司 一种环形产品的吸头机构

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JPS543226U (fr) * 1977-06-08 1979-01-10
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DE2926490A1 (de) * 1979-06-30 1981-02-05 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE3406487A1 (de) * 1984-02-23 1985-08-29 Bayerische Motoren Werke AG, 8000 München Einspritzventil fuer gemischverdichtende brennkraftmaschinen, insbesondere fuer einzelsaugrohr-einspritzung

Also Published As

Publication number Publication date
DE3502919C2 (fr) 1987-09-17
EP0189863A3 (en) 1988-04-27
JPS61218770A (ja) 1986-09-29
US4647012A (en) 1987-03-03
JPH0370115B2 (fr) 1991-11-06
EP0189863A2 (fr) 1986-08-06
DE3502919A1 (de) 1986-07-31

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