EP1338783B1 - Agencement d'un injecteur et joint de culasse et procédé de montage - Google Patents

Agencement d'un injecteur et joint de culasse et procédé de montage Download PDF

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Publication number
EP1338783B1
EP1338783B1 EP03100347A EP03100347A EP1338783B1 EP 1338783 B1 EP1338783 B1 EP 1338783B1 EP 03100347 A EP03100347 A EP 03100347A EP 03100347 A EP03100347 A EP 03100347A EP 1338783 B1 EP1338783 B1 EP 1338783B1
Authority
EP
European Patent Office
Prior art keywords
adapter
cylinder head
injector
head cover
cover
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
EP03100347A
Other languages
German (de)
English (en)
Other versions
EP1338783A2 (fr
EP1338783A3 (fr
EP1338783B8 (fr
Inventor
Jürgen Dick
Martin Simmet
Willibald Dr. Schürz
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.)
Continental Automotive GmbH
Original Assignee
Siemens VDO Automotive 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 Siemens VDO Automotive AG filed Critical Siemens VDO Automotive AG
Publication of EP1338783A2 publication Critical patent/EP1338783A2/fr
Publication of EP1338783A3 publication Critical patent/EP1338783A3/fr
Publication of EP1338783B1 publication Critical patent/EP1338783B1/fr
Application granted granted Critical
Publication of EP1338783B8 publication Critical patent/EP1338783B8/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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or 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
    • F02M61/14—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
    • 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 present invention relates to an arrangement with an injector according to the preamble of claim 1. (Compare with US-A-5699770 ).
  • the US 5,699,770 A and the DE 37 36 198 A1 each disclose a sealing arrangement of a cylinder head cover or a control housing cover with a fuel injector or a plug part for a fuel injector, wherein a seal is provided in the radial direction between an axial section of the fuel injector or of the plug part and an axial section of the cylinder head cover or the control housing cover. Flexibility in the use of fuel injectors in different cylinder heads or control housing cover is thereby limited. For this purpose, either the fuel injector, or the cylinder head cover or the control housing cover must be changed constructively.
  • Object of the present invention is to simplify a generic arrangement, wherein an injector should be suitable for different cylinder head covers.
  • the adapter is firmly connected to the injector and closes the opening of the cylinder head cover.
  • This adapter can be designed according to the respective installation situation. Depending on the requirements of the engine manufacturer, the seal between the injector and the cylinder head cover can now be designed radially or axially. This reduces the number of required components. Furthermore, all injectors can be mounted in the engine with the respective adapter attached to it, and then the cylinder head cover is mounted above it.
  • a sealing element is arranged in the radial direction between the adapter and the cylinder head cover.
  • axial tolerances or tolerances in the longitudinal direction of the injector can be easily compensated. This is ensured when extending between the adapter and the cylinder head cover circumferentially in the axial direction of a sealing surface whose extent in the axial direction is greater than the thickness of the cylinder head cover.
  • the adapter can be designed as a profile part.
  • the adapter has a circular surface shape, and that the injector sits in the center of the adapter. Due to this with respect to the injector axis rotationally symmetrical design of the arrangement, this is completely independent of the rotational position of the injector.
  • a fuel injector 1 and an aluminum adapter 3 fixedly connected thereto are mounted on a cylinder head (not shown).
  • the upper part of the injector 1 protrudes through an oval opening 5 of an aluminum cylinder head cover 7 which is likewise fastened to the cylinder head.
  • the injector 1 has, in a manner known per se, a separate plug 6 at the upper part, which in a manner known per se for the Supplying the electronics, the supply of fuel under high pressure and the discharge of a leakage fuel flow is used.
  • the adapter 3 is fixedly mounted.
  • the assembly of the adapter 3 can be done by a latch, by pressing or by caulking.
  • the adapter 3 is designed as a U-profile, its top is flat and arranged slightly above the top of the cylinder head cover 7.
  • the seal between the injector 1 and the adapter 3 is effected by an injector seal member 9, z. B. an O-ring.
  • the cylinder head cover 7 has in the region of the bushing 5 a rubber seal 11, which circumferentially seals to the adapter 3. For mounting the arrangement, no other parts are required. Possibly. occurring axial manufacturing tolerances are compensated automatically. Minor position tolerances are compensated by the radial seal or the rubber seal 11.
  • the adapter 3 may be made of plastic, for example PA 66, or alternatively as shown in Fig. 1 of an aluminum sheet be made.
  • the choice of material for the adapter 3 is adapted to the material of the cylinder head cover 7. If the cover 7, for example, aluminum, then the adapter 3 is made of aluminum sheet. The aim is in each case to achieve an at least approximately equal thermal expansion of adapter 3 and cover 7.
  • a T-shape of the seal 11 shown in FIG. 1 is adapted to the cylinder head cover 7 made of aluminum sheet, since a corresponding groove for the attachment of the rubber seal 11 in the cover 7 can be easily introduced.
  • the height of the seal 11 or its extension in the longitudinal direction of the injector 1, and the height of the mating surface of the adapter 3 are chosen to be significantly larger than the thickness S of the cover. As a result, a sufficiently high sealing surface 12 is formed circumferentially in the axial direction.
  • the rubber seal 11 is securely held in the axial direction of the cylinder head cover even when occurring by the assembly of the cover 7 forces.
  • the adapter 3 has a flat surface, which is arranged above the surface of the cover 7 and smoothly merges into it. This also prevents dirt (or water) from accumulating in the sealing area, which could fall onto the cylinder head during a repair. In a cylinder head cover 7 made of plastic, however, the rubber seal 11 may be glued directly to the plastic.
  • the injector 1 is first firmly connected to the adapter 3 in a pre-assembly.
  • This preassembled unit is delivered and screwed with a fastener 13 (shown only in Fig. 2) in the cylinder head.
  • the cylinder head cover 7 is screwed in a conventional manner via screws on the engine block (not shown).
  • the cover 7 is simply slipped over the adapter 3 from above.
  • the size of the opening 5 of the cover 7 depends on the shape of the injector 1 and the plug 6. It is preferable to mount the cylinder head cover 7 on the cylinder head via a straight push-on movement.
  • the base area of the adapter 3 is chosen to be larger than the corresponding base of the holder 3 held in the adapter 1 injector. If sufficient space is available, the opening 5 and the adapter 3 in deviation from the illustrations in FIGS. 1 and 2 may also be circular and the injector 1 may be arranged in the center of the adapter 3 or the opening 5.
  • the circular shape has the advantage that an error as a result of a rotational position of the injector 1 causes no problems, whereby the assembly of the assembly is facilitated overall.
  • the adapter 3 shown in FIG. 2 is made of plastic and made in one piece together with the Steckerumspritzung 6.
  • the connection of the plastic adapter 3 with the injector 1 is realized by a latch, for which the injector has 1 holes, are snapped into the springs of the adapter 3 (not shown).
  • this stiffening ribs are snapped into the springs of the adapter 3 (not shown).
  • the annular seal 11 is arranged between the underside of the cover 7 and the top of the adapter 3.
  • radial tolerances of the arrangement can be easily compensated. Different thermal expansion coefficients of adapter 3 and cover 7 are not as critical due to the displaceability as in the arrangement according to the first embodiment. Therefore, adapter 3 and cover 7 could also consist of completely different materials.
  • Embodiments of the arrangement are also possible which have a combined axial and radial seal to the cylinder head cover (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Gasket Seals (AREA)

Claims (8)

  1. Agencement avec un injecteur (1) qui est fixé dans une ouverture (5) d'un couvercle de culasse (7) dans une culasse, dans lequel
    un adaptateur (3), qui obture et qui étanche l'ouverture du couvercle de culasse (7), est raccordé fixement à l'injecteur (1),
    caractérisé en ce que l'adaptateur (3) est réalisé en matière plastique et est moulé en une seule partie avec un moulage par injection du connecteur (6) de l'injecteur et en ce qu'un élément d'étanchéité (11) est disposé entre l'adaptateur (3) et le couvercle de culasse (7) dans la direction axiale.
  2. Agencement selon la revendication 1, caractérisé en ce que les matériaux de l'adaptateur (3) et du couvercle de culasse (7) présentent au moins des coefficients de dilatation thermique similaires.
  3. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un élément d'étanchéité (11) est disposé entre l'adaptateur (3) et le couvercle de culasse (7) dans la direction radiale.
  4. Agencement selon la revendication 3, caractérisé en ce que l'adaptateur (3) est réalisé sous forme de pièce profilée.
  5. Agencement selon la revendication 3 ou 4,
    caractérisé en ce qu'une surface d'étanchéité (12), dont l'extension dans la direction axiale est plus importante que l'épaisseur (S) du couvercle de culasse (7), est formée entre l'adaptateur (3) et le couvercle de culasse (7) du côté du pourtour dans la direction axiale.
  6. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une surface de base de l'adaptateur (3) est plus grande qu'une surface de base correspondante de l'injecteur (1) fixé dans l'adaptateur (3).
  7. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'adaptateur (3) et l'ouverture (5) du couvercle de culasse (7) présentent une forme de surface circulaire et en ce que l'injecteur (1) est placé au centre de l'adaptateur (3) ou de l'ouverture (5).
  8. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'adaptateur (3) présente une surface plane qui s'étend au moins à la même hauteur que la surface du couvercle de culasse (7).
EP20030100347 2002-02-21 2003-02-14 Agencement d'un injecteur et joint de culasse et procédé de montage Expired - Lifetime EP1338783B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002107287 DE10207287A1 (de) 2002-02-21 2002-02-21 Anordnung mit einem Injektor und einer Zylinderkopfabdichtung sowie entsprechendes Montageverfahren
DE10207287 2002-02-21

Publications (4)

Publication Number Publication Date
EP1338783A2 EP1338783A2 (fr) 2003-08-27
EP1338783A3 EP1338783A3 (fr) 2003-11-05
EP1338783B1 true EP1338783B1 (fr) 2008-01-09
EP1338783B8 EP1338783B8 (fr) 2008-04-16

Family

ID=27635218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030100347 Expired - Lifetime EP1338783B8 (fr) 2002-02-21 2003-02-14 Agencement d'un injecteur et joint de culasse et procédé de montage

Country Status (2)

Country Link
EP (1) EP1338783B8 (fr)
DE (2) DE10207287A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104136756A (zh) * 2012-03-22 2014-11-05 爱尔铃克铃尔股份公司 机器或车辆部件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008014950U1 (de) * 2008-11-11 2010-04-01 Mann+Hummel Gmbh Zylinderkopfhaube für einen Zylinderkopf einer Brennkraftmaschine
DE102018132444B4 (de) * 2018-12-17 2024-01-04 Man Truck & Bus Se Vorrichtung zur Zuführung von Gaskraftstoff zu einer Verbrennungskammer einer Brennkraftmaschine
JP7180573B2 (ja) * 2019-09-20 2022-11-30 いすゞ自動車株式会社 インジェクタ取付構造

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270436A (ja) * 1998-03-24 1999-10-05 Kubota Corp 燃料噴射型エンジン

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736198A1 (de) * 1987-10-26 1989-05-18 Voest Alpine Automotive Kraftstoffeinspritzduese fuer brennkraftmaschinen
JP3687758B2 (ja) * 1995-11-14 2005-08-24 株式会社デンソー 燃料噴射装置
JP2001140729A (ja) * 1999-11-17 2001-05-22 Yanmar Diesel Engine Co Ltd エンジンの燃料噴射弁取付構造
JP3692276B2 (ja) * 2000-03-03 2005-09-07 株式会社クボタ 燃料噴射ノズルを備えたエンジン
JP2002295341A (ja) * 2001-03-30 2002-10-09 Hino Motors Ltd フューエルインジェクタのシール構造

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270436A (ja) * 1998-03-24 1999-10-05 Kubota Corp 燃料噴射型エンジン

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104136756A (zh) * 2012-03-22 2014-11-05 爱尔铃克铃尔股份公司 机器或车辆部件

Also Published As

Publication number Publication date
EP1338783A2 (fr) 2003-08-27
DE10207287A1 (de) 2003-09-18
DE50308952D1 (de) 2008-02-21
EP1338783A3 (fr) 2003-11-05
EP1338783B8 (fr) 2008-04-16

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