EP2665920A1 - Injecteur de carburant doté d'un raccord haute pression amélioré - Google Patents

Injecteur de carburant doté d'un raccord haute pression amélioré

Info

Publication number
EP2665920A1
EP2665920A1 EP12700662.5A EP12700662A EP2665920A1 EP 2665920 A1 EP2665920 A1 EP 2665920A1 EP 12700662 A EP12700662 A EP 12700662A EP 2665920 A1 EP2665920 A1 EP 2665920A1
Authority
EP
European Patent Office
Prior art keywords
flange
fuel injection
injection device
rail
connecting piece
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
EP12700662.5A
Other languages
German (de)
English (en)
Other versions
EP2665920B1 (fr
Inventor
Ralf Kromer
Guenter Wolff
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 EP2665920A1 publication Critical patent/EP2665920A1/fr
Application granted granted Critical
Publication of EP2665920B1 publication Critical patent/EP2665920B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • 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
    • F02M55/025—Common 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
    • 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

Definitions

  • Herste II cost due to the large number of components and on the other hand to an increased assembly costs. It would therefore be desirable to have a safe and easy mountable connection between an injector and a rail even in high pressure applications.
  • the flange is formed in two parts with a first and a second part. In this way, a particularly simple mounting of the flange on the connector can be made possible.
  • the first part of the flange element is constructed the same as the second part of the flange element. This results in a particularly cost manufacturability. Furthermore, a likelihood of confusion of parts during assembly is excluded.
  • the two-part flange is divided at a central opening through which the connector is guided.
  • a lateral mounting of the flange is made possible on the connector.
  • the flange element is integrally formed. This can be a
  • Mounting friendliness of the flange can be further increased.
  • the one-piece flange element comprises a
  • Connecting slot is arranged in the central opening. This can be
  • the flange is integrally formed and between the flange and the connector a bayonet-type connection is provided.
  • the undercut on the connection piece has a partial spherical surface shape and one or more are on the flange element
  • a bevel is provided on the flange element at a central opening of the flange element, which is directed towards the connection piece.
  • the present invention is preferably used in high pressure injection systems.
  • Figure 1 is a schematic sectional view of a
  • Figure 2 is a schematic, perspective view of a
  • Figure 3 is a schematic, perspective view of the items of the
  • Figure 4 is a schematic, perspective view of
  • Figure 5 is a schematic, perspective view of a
  • Figure 6 is a schematic, perspective view of
  • Figure 7 is a schematic, perspective view of
  • Figure 8 is a schematic, perspective view of a
  • Figure 9 is a schematic sectional view of the flange of
  • Figure 10 is a schematic, perspective view of
  • Figure 1 1 is a schematic, perspective view of the assembled
  • Fuel injection device 1 according to a first preferred
  • Fuel injection device 1 an injector 3, on which a connection piece 4 is arranged with a central through-bore 40.
  • the fitting 4 provides a connection between the rail and the injector 3.
  • the connecting piece 4 has a spherical surface 41 at the end facing the rail 2 and an undercut 42.
  • a conical surface 22 is formed at the discharge opening 21.
  • the fuel injection device 1 comprises a flange element 5, which is shown in detail in Figures 2 and 3.
  • the flange 5 is formed in two parts and includes a first flange 57 and a second flange 58.
  • the two flange 57, 58 are the same design and are pushed against each other, then the
  • flange 5 On the flange 5 is a first
  • Attachment opening 51 and a second attachment opening 52 are provided, which are each formed by partial openings in the first and second flange 57, 58. As shown in particular in FIG. 3, a first partial opening 53 without thread and a second partial opening 54 with a thread are provided on the first flange part 57. In the same way, the second flange part 57 is provided with a first part opening 55 without thread and a second part opening 56 with thread. In the assembled state of the flange element is thus in each case a portion of the mounting holes 51, 52 provided with a thread.
  • fastening elements 6, 7, which are indicated schematically, are used in the form of screws for mounting the flange element 5, said fastening elements being provided in the rail 2 through holes 23, 24 be inserted through and screwed into the flange 5. This results in an axial biasing force on the connector 4.
  • Fastening elements 6, 7 is then attracted to the flange 5 in the direction of the rail 2 and thus exerts the necessary for the sealing biasing force on the connector 4.
  • the injector including a final
  • Ball surface or on the conical surface to leaks due to the extremely high pressures of over 20 MPa can lead.
  • Embodiment are designated. Unlike the first
  • the flange 5 is integrally formed in the second embodiment. Furthermore, the flange 5 of the second
  • Embodiment in addition to the central opening 50 on a mounting opening 60, which is also formed as a through hole through the flange 5.
  • the mounting opening 60 is connected via a connecting slot 61, which is also formed continuously, with the central opening 50.
  • An axis of the mounting opening 60 is arranged at an angle of approximately 45 ° to the axis of the central opening 50. This makes it possible that the
  • connection piece 4 has a relatively long neck portion 43. From those shown in Figures 5 and 6
  • Verschwenkvorgang can be brought into the mounting position for mounting to the rail 2, the flange 5.
  • FIGS. 8 to 11 a fuel injection device according to a third exemplary embodiment of the invention is described in detail, wherein in turn identical or functionally identical parts are designated by the same reference numerals as in the first exemplary embodiment. In contrast to the second embodiment is in the fuel injection device of the third
  • a bayonet-type connection 70 between the connector 4 and the flange 5 is provided.
  • a bayonet element 71 with a first flattened side 72 and a second flattened side 73 is provided on the connecting piece 4.
  • the undercut 42 is also provided, which in the third
  • Flange element 5 is rotated by 90 °, so that the undercut 42 is brought into contact with a first and a second bearing surface 74, 75. Then, as in the previous embodiments, two fasteners 6, 7 in the mounting holes 51, 52, both of which are threaded, are screwed so that the flange 5 is pressed against the undercut 42 and thereby the connector 4 against a Not shown conical surface is pressed on the rail. This can also be realized again a secure metal-to-metal connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP12700662.5A 2011-01-21 2012-01-17 Injecteur de carburant doté d'un raccord haute pression amélioré Active EP2665920B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011002996A DE102011002996A1 (de) 2011-01-21 2011-01-21 Kraftstoffeinspritzventil mit verbessertem Hochdruckanschluss
PCT/EP2012/050591 WO2012098087A1 (fr) 2011-01-21 2012-01-17 Injecteur de carburant doté d'un raccord haute pression amélioré

Publications (2)

Publication Number Publication Date
EP2665920A1 true EP2665920A1 (fr) 2013-11-27
EP2665920B1 EP2665920B1 (fr) 2020-09-30

Family

ID=45509483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12700662.5A Active EP2665920B1 (fr) 2011-01-21 2012-01-17 Injecteur de carburant doté d'un raccord haute pression amélioré

Country Status (7)

Country Link
US (1) US10954906B2 (fr)
EP (1) EP2665920B1 (fr)
JP (1) JP5774127B2 (fr)
CN (1) CN103328809B (fr)
BR (1) BR112013017608B1 (fr)
DE (1) DE102011002996A1 (fr)
WO (1) WO2012098087A1 (fr)

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JP5315132B2 (ja) * 2009-05-29 2013-10-16 株式会社ケーヒン 燃料噴射弁の取り付け構造
EP2588740B1 (fr) * 2010-06-30 2015-07-22 Orbital Australia PTY Ltd. Dispositif d'injection de carburant
US9228551B2 (en) * 2012-09-13 2016-01-05 Caterpillar Inc. Quill tube protection feature
DE102015210795B4 (de) * 2015-06-12 2024-01-04 Vitesco Technologies GmbH Kraftstoffhochdruckpumpe
JP6734179B2 (ja) 2016-10-31 2020-08-05 三桜工業株式会社 燃料配管
DE102017221203A1 (de) * 2017-11-27 2019-05-29 Hyundai Motor Company Kraftstoffeinspritzsystem und Verfahren zum Betreiben eines Kraftstoffeinspritzsystems
DE102019207390B4 (de) 2019-05-21 2022-03-17 Audi Ag Zylinderkopf für eine Brennkraftmaschine mit Kraftstoffrail und einem Einspritzventil, Verfahren zum Montieren sowie Verwendung hierfür
GB2612974B (en) * 2021-11-17 2024-05-22 Delphi Tech Ip Ltd Fuel-rail assembly

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JP2803383B2 (ja) * 1991-04-08 1998-09-24 トヨタ自動車株式会社 高圧流体用継手
DE4118512A1 (de) * 1991-06-06 1992-12-10 Bosch Gmbh Robert Elektrisch betaetigbares brennstoffeinspritzventil und verfahren zu dessen elektrischer kontaktierung
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Also Published As

Publication number Publication date
WO2012098087A1 (fr) 2012-07-26
DE102011002996A1 (de) 2012-07-26
JP5774127B2 (ja) 2015-09-02
BR112013017608A2 (pt) 2016-10-18
CN103328809A (zh) 2013-09-25
CN103328809B (zh) 2018-05-15
EP2665920B1 (fr) 2020-09-30
JP2014502697A (ja) 2014-02-03
US10954906B2 (en) 2021-03-23
BR112013017608B1 (pt) 2021-07-20
US20130333669A1 (en) 2013-12-19

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