EP1373707B1 - Raccord pour raccorder une conduite de carburant a une soupape d'injection de carburant - Google Patents

Raccord pour raccorder une conduite de carburant a une soupape d'injection de carburant Download PDF

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Publication number
EP1373707B1
EP1373707B1 EP02724121A EP02724121A EP1373707B1 EP 1373707 B1 EP1373707 B1 EP 1373707B1 EP 02724121 A EP02724121 A EP 02724121A EP 02724121 A EP02724121 A EP 02724121A EP 1373707 B1 EP1373707 B1 EP 1373707B1
Authority
EP
European Patent Office
Prior art keywords
connection piece
fuel
injection valve
fuel injection
fuel line
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
EP02724121A
Other languages
German (de)
English (en)
Other versions
EP1373707A1 (fr
Inventor
Andreas Glaser
Jochen Staiger
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 EP1373707A1 publication Critical patent/EP1373707A1/fr
Application granted granted Critical
Publication of EP1373707B1 publication Critical patent/EP1373707B1/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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings

Definitions

  • the invention is based on a connector after the Genus of the main claim.
  • Fuelrail For connecting a fuel injection valve with a Fuel line is in many cases due to Installation situation between the fuel injection valve and the fuel supply line is a connector to Compensation of position tolerance required. This is true especially in direct-injection internal combustion engines to that, over a common fuel line, the so-called Fuelrail, several fuel injectors with Supply fuel.
  • the described intermediate piece has two different Connections on. On one side has the intermediate piece a spigot in the opening of the fuel line is insertable. At the opposite end is a Receiving opening introduced in the intermediate piece, in which introduced the connection side of the fuel injection valve can be.
  • the receiving opening has in particular a with the opening of the fuel line identical inner Geometry on.
  • the intermediate piece acts like a Extension of the fuel injection valve or the Connecting piece of the fuel line.
  • On the outside of the intermediate piece is a circumferential paragraph attached, with the help of the intermediate piece by a retaining clip connected to the fuel line and against slipping out can be secured.
  • the seal of the intermediate piece is made by two Sealing elements, which are usually designed as O-rings.
  • the first sealing element used to seal the Intermediate piece opposite the fuel line is, is while in a groove on the neck of the intermediate piece arranged.
  • the seal between the Fuel injection valve and the intermediate piece takes place in contrast, by a at the fuel injection valve arranged second sealing element.
  • a disadvantage of the described intermediate piece is the Need to attach the spacer with a retaining clip to fix the Fuelrail. This does not just require one additional step in the assembly of the Internal combustion engine, but also additional parts expenditure. When mounting is also disadvantageous that the Intermediate piece oriented must be used.
  • the limited elasticity of the retaining clip in that, with a tilting of the intermediate piece relative to the fuel line unevenly with the intermediate piece Force is applied, so that there is a bruise of the Sealing element and finally to a failure of the Can come sealing element.
  • EP 1 150 002 A1 is already a connector for Connecting a fuel line with a fuel injection valve known with a first nozzle, which is insertable into a receiving opening in the fuel line, and a arranged on the first nozzle first sealing element and with one on the first Stub opposing end formed second stub, which is in a recess in the Fuel injector is insertable and on which a second sealing element is arranged, is executed.
  • a connection area is provided, its transition to the submerged in the fuel injection valve second port as a is formed conically extending contact surface, which in mounted connector in Plant with a corresponding surface on the fuel injector housing is.
  • the inventive connector with the characterizing features of the main claim the Advantage that by the configuration of the connector with two oppositely arranged sockets and the between trained contact surfaces own Retaining clip deleted.
  • the connector is through the Contact surfaces between the fuel injection valve and the Fuel line fixed in terms of its location. Position tolerances or changes in length of the fuel line as a result of temperature fluctuations due to the lack of additional fixation does not occur asymmetrical force transmission into the sealing elements.
  • both nozzles having an identical geometry is one particular easy installation possible.
  • the connector can be arbitrary to be assembled. This eliminates the orientation of the Component as an additional step before insertion.
  • FIG. 1 is a schematic representation of a inventive connector 1 for connecting a Not shown fuel injection valve with a not shown fuel line shown.
  • the inventive connector 1 consists essentially from three sections. Sequential in the axial direction are a first nozzle 2, a radially expanded region. 4 and a second nozzle 3 is arranged.
  • the first nozzle 2 points in the direction of the end of the Connector 1 a reduction of its radial Extension and thus forms a first paragraph 11.
  • On the first paragraph 11 is a first support disk. 9 arranged, whose inner radial extent is smaller than the radial extent of the first nozzle 2 on the side of the extended area 4.
  • the outer radial extent the first support disk 9, however, is larger than the maximum radial extent of the first port 2.
  • the Outer end of the first port 2 is as a first Collar 13 is formed, whose outer radial extent preferably the outer radial extent of the first Support disc 9 corresponds.
  • the radial extent of the first Collar 13 and the first support plate 9 are so much smaller than the inner radial extent of the receiving opening of the adjacent component (eg Qualcommstutzens the fuel line) that the Connector 1 by a certain angle relative to the receiving member can be tilted without the first Support disc 9 or the first collar 13 against the inner wall of the adjacent component.
  • First Sealing element 7 may, for example, as in Fig. 1st shown, an O-ring can be used. Height and radial Expansion of the between the first support disk 9 and the first collar 13 formed space are according to the nominal size of the O-ring to be used sized.
  • the opposite end of the connector 1 corresponds in its construction of the foregoing description.
  • a second collar 14 which at the end of the connecting piece. 1 is arranged, and a second support plate 10, the a second paragraph 12 is a second Seal element 8 is arranged.
  • the radially outer expansions are again sized so that the second port 3 in the Receiving opening of the adjacent component (eg Fuel injection valve) by a certain angle can be tilted without the second support plate 10th or the second collar 14 on the inner wall of To initiate receiving opening.
  • the geometry of the first and second nozzle 2 and 3 is preferably identical, so that a symmetrical connector 1 results, whose Orientation during installation does not have to be determined.
  • the Connector 1 for example, executed in several parts be.
  • the support disks 9, 10 are for example slotted and at the outside diameter larger than the opening of the adjacent one Component. Due to the slotted design are the Support disks 9, 10 always on the outer diameter of the bore of the adjacent component. With correct interpretation of the Support disks 9, 10 always remains at the inner diameter Gap to the neck 2, 3 of the connector 1.
  • a first contact surface 5 As a transition from the first port 2 to the extended Region 4 is formed a first contact surface 5, whose Geometry corresponds to a section of a spherical surface.
  • z. B identical to the intersection of the central axis 18th of the connecting piece 1 and the median plane 19 of the second Sealing element 8.
  • the transition of the second nozzle 3 to the extended area 4 is also part of a Sphere formed, wherein the center z. B. identical to the intersection of the central axis 18 of the Connector 1 with the median plane 20 of the first Sealing element 7 is and the spherical surface a second Radius R2 has.
  • the two are based Contact surfaces 5 and 6 each at a corresponding Surface on the fuel line and the Fuel injector off. This can be done in axial Direction a force from the fuel line to the Fuel injector are exercised.
  • the Fuel injection valve is so from the connector. 1 fixed in the cylinder head.
  • the required forces to the fuel injection valve firmly in the cylinder head stop at the fuel injector opposite side through the fuel line taken, which is attached to the internal combustion engine.
  • the connector 1 can be between the Fuel line and the fuel injector tend. In this case, the connector 1 rotates about the two Centers of the spherical contact surfaces 5 and 6. Die Ball geometry of the two contact surfaces 5 and 6 ensures for a further uniform contact surface.
  • the radii the two contact surfaces 5 and 6 are corresponding to the corresponding surfaces on the fuel line and the Fuel injection valve selected.
  • first and a second end face 15 and 16 are formed at the two ends of the connecting piece 1 .
  • the both end faces 15 and 16 can vary in size be elected. Will the two be different sizes Faces 15 and 16 are pressurized with fuel pressure, this creates a resulting force on the Connector 1 in the direction of the smaller end face 15th or 16. This resulting force can be used to the force with which the fuel injector in the Cylinder head is held, raise.
  • the connector 1 has an inner through hole 17 to the Fuel flow from the fuel distributor to To ensure fuel injector.

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 (6)

  1. Raccord pour relier une conduite de carburant à une soupape d'injection de carburant comprenant un premier embout (2) pour s'introduire dans l'orifice de réception de la conduite de carburant et sur ce premier embout (2), un premier élément d'étanchéité (7) ainsi qu'un second embout (3) réalisé à l'extrémité opposée à celle du premier embout (2), pour s'introduire dans une cavité de la soupape d'injection et un second élément d'étanchéité (8) ainsi qu'une zone (4) élargie radialement comprise entre le premier et le second embout (2, 3) et dont la transition avec au moins l'un des deux embouts (2, 3) constitue une première surface d'appui (5, 6) qui, lorsque le raccord (1) est monté, vient en appui contre une surface correspondante de l'un des composants à réunir,
    caractérisé par
    une surface d'appui (5, 6) respective au niveau des deux transitions entre la zone élargie (4) et le premier ainsi que le second embout (2, 3) et, lorsque le raccord (1) est monté cette surface vient en appui contre une surface respective correspondante de la soupape d'injection et de la conduite de carburant.
  2. Raccord selon la revendication 1,
    caractérisé en ce que
    la forme géométrique d'au moins l'une des deux surfaces d'appui (5, 6) est un segment de surface sphérique.
  3. Raccord selon la revendication 2,
    caractérisé en ce que
    le centre de la surface géométrique sphérique coïncide avec l'intersection de l'axe (18) du raccord (1) et du plan médian de celui des éléments d'étanchéité (7, 8) située du côté opposé à celui de la surface d'appui (6, 5).
  4. Raccord selon l'une des revendications 1 à 3,
    caractérisé en ce que
    les deux surfaces d'appui (5, 6) de la pièce de liaison (1) transmettent dans la direction axiale une force exercée par la conduite de carburant sur la soupape d'injection.
  5. Raccord selon l'une des revendications 1 à 4,
    caractérisé en ce que
    les surfaces frontales (15, 16) du premier et du second embout (2, 3) ont des sections différentes et le raccord (1) développe une force axiale correspondant à la pression du carburant et au rapport des surfaces.
  6. Raccord selon l'une des revendications 1 à 5,
    caractérisé en ce que
    les deux embouts (2, 3) ont la même forme géométrique.
EP02724121A 2001-03-27 2002-03-27 Raccord pour raccorder une conduite de carburant a une soupape d'injection de carburant Expired - Lifetime EP1373707B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10115048 2001-03-27
DE10115048A DE10115048A1 (de) 2001-03-27 2001-03-27 Verbindungsstück zum Verbinden einer Brennstoffleitung mit einem Brennstoffeinspritzventil
PCT/DE2002/001130 WO2002077439A1 (fr) 2001-03-27 2002-03-27 Raccord pour raccorder une conduite de carburant a une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1373707A1 EP1373707A1 (fr) 2004-01-02
EP1373707B1 true EP1373707B1 (fr) 2005-02-23

Family

ID=7679233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02724121A Expired - Lifetime EP1373707B1 (fr) 2001-03-27 2002-03-27 Raccord pour raccorder une conduite de carburant a une soupape d'injection de carburant

Country Status (8)

Country Link
US (1) US7083203B2 (fr)
EP (1) EP1373707B1 (fr)
JP (1) JP4227412B2 (fr)
KR (1) KR100858643B1 (fr)
CN (1) CN1304751C (fr)
CZ (1) CZ20023871A3 (fr)
DE (2) DE10115048A1 (fr)
WO (1) WO2002077439A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401316B2 (ja) * 2005-03-29 2010-01-20 本田技研工業株式会社 内燃機関における圧縮空気供給構造
US7419189B2 (en) * 2006-04-26 2008-09-02 International Engine Intellectual Property Company, Llc Hydraulic fitting
US20090013968A1 (en) * 2007-07-09 2009-01-15 Keegan Kevin R Vapor recovery system for a direct injector fuel rail assembly
KR101449760B1 (ko) * 2008-09-08 2014-10-13 타이코에이엠피(유) 인젝터의 더블 락킹 커넥터
EP2700805B1 (fr) * 2012-08-23 2016-06-29 Continental Automotive GmbH Pièce d'extension, soupape d'injection et ensemble de distribution de carburant
CN109098904A (zh) * 2018-10-10 2018-12-28 浙江春风动力股份有限公司 摩托车发动机及燃油分配装置
US11193611B2 (en) 2019-10-14 2021-12-07 Fernco, Inc. Pipe coupling apparatus
USD956937S1 (en) 2019-10-14 2022-07-05 Fernco, Inc. Pipe coupling assembly
DE102021210668A1 (de) * 2021-09-24 2023-03-30 Robert Bosch Gesellschaft mit beschränkter Haftung Kühlmittelverbindungsstutzen, Gehäusesystem und dessen Herstellung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066826A1 (fr) * 2001-02-21 2002-08-29 Robert Bosch Gmbh Etirer de montage et procede de montage d"une soupape d"injection de carburant

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US1057939A (en) * 1912-01-31 1913-04-01 Andrew H Cooper Ball-and-socket pipe-coupling.
US2428143A (en) * 1945-01-22 1947-09-30 Parker Appliance Co Flexible coupling for tubes
US3112939A (en) * 1960-03-21 1963-12-03 Gen Motors Corp Threadless tubing connector
US3376053A (en) * 1964-08-13 1968-04-02 Rosan Eng Corp Rotatable high pressure fluid fitting
US3427051A (en) * 1967-02-24 1969-02-11 Gen Dynamics Corp Fluid pressure coupling
US3565465A (en) * 1968-03-19 1971-02-23 Ellay Enfield Tubes Ltd Pipe couplings
US3515414A (en) * 1968-12-16 1970-06-02 Interspace Corp Flexible sectional pipe lines
US3874706A (en) * 1971-10-15 1975-04-01 Hydrotech Int Inc Fluid actuated pipe connection
SE508279C2 (sv) * 1996-11-21 1998-09-21 Dresser Wayne Ab Sätt och arrangemang för åstadkommande av en rörkoppling av en rörkoppling där ena delen har en rörände med två ringvulster
DE19735665A1 (de) 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage
DE19758817B4 (de) 1997-12-17 2010-08-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Halterung für ein Brennstoffeinspritzventil am Zylinderkopf einer Brennkraftmaschine
US6000470A (en) * 1998-03-09 1999-12-14 Halliburton Energy Services, Inc. Self-locking connector
JP4619598B2 (ja) 1999-09-10 2011-01-26 インターナショナル エンジン インテレクチュアル プロパティー カンパニー リミテッド ライアビリティ カンパニー 燃料噴射器用の作動流体送出しシステム
DE60003784T2 (de) 2000-04-26 2004-06-03 Ford Global Technologies, Inc., A subsidiary of Ford Motor Co., Dearborn Kraftstoffeinspritzsystem für Brennkraftmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066826A1 (fr) * 2001-02-21 2002-08-29 Robert Bosch Gmbh Etirer de montage et procede de montage d"une soupape d"injection de carburant

Also Published As

Publication number Publication date
CZ20023871A3 (cs) 2004-07-14
KR20030004432A (ko) 2003-01-14
EP1373707A1 (fr) 2004-01-02
DE10115048A1 (de) 2002-10-02
JP4227412B2 (ja) 2009-02-18
CN1460150A (zh) 2003-12-03
JP2004518887A (ja) 2004-06-24
KR100858643B1 (ko) 2008-09-17
WO2002077439A1 (fr) 2002-10-03
CN1304751C (zh) 2007-03-14
US20040021009A1 (en) 2004-02-05
DE50202315D1 (de) 2005-03-31
US7083203B2 (en) 2006-08-01

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