EP1454054B1 - Systeme d'injection de carburant - Google Patents

Systeme d'injection de carburant Download PDF

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Publication number
EP1454054B1
EP1454054B1 EP02767126A EP02767126A EP1454054B1 EP 1454054 B1 EP1454054 B1 EP 1454054B1 EP 02767126 A EP02767126 A EP 02767126A EP 02767126 A EP02767126 A EP 02767126A EP 1454054 B1 EP1454054 B1 EP 1454054B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
fuel
injection system
corrugated tube
injection valve
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
EP02767126A
Other languages
German (de)
English (en)
Other versions
EP1454054A1 (fr
Inventor
Werner Berger
Martin Müller
Andreas Glaser
Anh Tuan Hoang
Martin BÜHNER
Cedric Olivier
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 EP1454054A1 publication Critical patent/EP1454054A1/fr
Application granted granted Critical
Publication of EP1454054B1 publication Critical patent/EP1454054B1/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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a fuel injection system for injecting fuel into an internal combustion engine according to the preamble of the main claim.
  • the fuel injection system comprises a metal fuel rail, which communicates via at least one branch line with at least one fuel injection valve, wherein the branch line is formed as a metal tube and connected by a screw with the fuel injection valve.
  • a branch line material is easily bendable metal.
  • a metallic thin-walled bellows in the form of a bellows bellows is provided, by which a lateral offset between the starting point of the branch line is compensated at the fuel distribution line and the installation position of the fuel injection valve.
  • a disadvantage of the DE-OS 28 29 057 known fuel injection system is that the screw requires special formations of Wellrohbalgs.
  • the bellows bellows is not detachably connected to the screw connection or the fuel distributor line. A simple quick assembly of the fuel rail is difficult.
  • a pipe connection in the form of a corrugated pipe is known, which is intended to prevent or reduce the transmission of vibrations.
  • the corrugated pipe is surrounded on the outside by a casing which is surrounded on the outside by a casing which does not touch the corrugated pipe and which is rigidly connected at one end to the one pipe section.
  • the shell is sealed off from the other pipe section by a flexible seal.
  • the respective corrugation located at the end of the corrugated tube engages a form-fitting flange of a fastening nut.
  • the corrugated tube is attached to subsequent pipe sections with the fastening nut.
  • a disadvantage of the known prior art is that the arrangement is multi-part and does not allow quick, easy installation.
  • a fuel injection system wherein a bellows structural part between a base end part near a branch pipe of the pipe body of a fuel distribution line and a tip for inserting and connecting the injection valve is arranged.
  • the bellows structural member is covered with a cylindrical wire mesh body to prevent expansion deformation due to the fuel pressure.
  • the bellows structural part at its respective ends to a first end portion which is inserted into the fuel rail and a second end portion, which is different from the first end portion and is pushed onto the injection valve.
  • the fuel injection system according to the invention with the characterizing features of the main claim has the advantage that the corrugated tube is designed as a simple, universally applicable component that can be mounted by plugging.
  • the corrugated pipe according to the invention is already inserted into the inlet of the fuel manifold and is connected to this together with the fuel injection valves.
  • the corrugated pipe according to the invention is inexpensive to produce and usable for a variety of different fuel injection systems.
  • the end sections are advantageously enclosed radially outwardly by the guide sections and the guide sections have a conical insertion area.
  • the sealing means may consist of a arranged in a groove and supported against a support ring elastomer ring.
  • An elastomeric ring is held by its residual stress in an advantageous simple manner in a groove.
  • An arranged on the guide portion locking plate engages advantageously in a first corrugation of the corrugated pipe.
  • the first corrugation of the corrugated pipe is in each case at a staging of the inlet and according to the inlet section at each end portion.
  • the hold-down force for the fuel injection valve can be exerted via the corrugated tube with an appropriate design of the corrugated tube, as lateral sliding is prevented.
  • the seal is not burdened by the hold-down force.
  • Fig. 1 shows a partially sectioned view of a first embodiment of a fuel injection system 1 according to the invention in the plane of a fuel injection valve 2 and a corrugated tube 3.
  • the corrugated tube 3 is shown with a first end portion 4a of two identically shaped end portions 4a, 4b in a first guide portion 5a of an inlet. 6 introduced a fuel distribution line, not shown here.
  • the second end portion 4 b is inserted into a second guide portion 5 b, which is formed at an inlet portion 9 of the fuel injection valve 2.
  • the fuel injection valve 2 is inserted into a bore 7 of a cylinder head 8 of an internal combustion engine and shown cut in the region of the inlet section 9. Opposite the bore 7, the fuel injection valve 2 by a arranged in a groove 10 sealing ring 11 z. B. sealed elastomer.
  • a conical insertion section 12 is formed.
  • a conical insertion section 15 is also formed.
  • a step 16 of the inlet 6 is located on the first end portion 4a first corrugation 13.
  • Each of the end sections 4a, 4b is formed by a sealing ring 17 Elastomer against the respective guide portion 5a, 5b sealed.
  • the sealing ring 17 is arranged in a groove 18 and is supported by a support ring 19.
  • the corrugated tube 3 of the present fuel injection system 1 adapted to different installation conditions fuel injection systems 2 always be the same structure and is therefore inexpensive to produce as a mass fraction. It is a simple assembly by plugging possible, wherein the corrugated tube 3 is held at the inlet 6 or the inlet section 9 in the further assembly by the deformation stress of the sealing ring 17 relative to the guide portion 5a, 5b.
  • the corrugated pipe can not be plugged 3. reversed by its symmetrical structure. But it is also an asymmetrical structure or a solid connection between the fuel injector 2 and corrugated pipe 21 z. B. possible by laser welding.
  • FIG. 2 shows a further embodiment of a fuel injection system 1 according to the invention with a locking plate 20 in the same view as the corresponding fuel injection system in Fig. 1 , Corresponding components are provided with the same reference numerals.
  • a cut corrugated tube 21 has opposite to in Fig. 1 Corrugated tube shown on a smaller diameter.
  • the first end portion 4a is inserted into the first guide portion 5a of the inlet 6 of the fuel rail not shown here, and the second one End portion 4b is inserted into the second guide portion 5b of the fuel injection valve 2.
  • Each of the end sections 4a, 4b is sealed off from the respective guide section 5a, 5b by the sealing ring 17, which is arranged in the groove 18 and is supported by the support ring 19.
  • the Kraftstoffeinspritzvehtil 2 is sealed in the bore 7 of the cylinder head 8 of the internal combustion engine and through the groove 10 disposed in the sealing ring 11 made of elastomer.

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 (8)

  1. Installation d'injection de carburant pour injecter le carburant dans un moteur à combustion interne ayant au moins un injecteur de carburant (2) et une conduite de distribution de carburant ayant pour chaque injecteur de carburant (2) une arrivée (6) susceptible d'être reliée à un segment d'arrivée (9) de l'injecteur (2),
    et un tube ondulé (3, 21) étant prévu entre l'arrivée (6) et le segment d'arrivée (9) de l'injecteur de carburant (2) et
    le tube ondulé (3, 21) comporte deux segments d'extrémité (4a, 4b) concentriques d'un côté au segment de guidage (5a, 5b) du segment d'arrivée (9) de l'injecteur de carburant (2) et de l'autre côté à l'arrivée (6) de la conduite de distribution de carburant,
    caractérisée en ce que
    le tube ondulé (3) est symétrique, les segments d'extrémité (4a, 4b) sont identiques et comportent chacun un moyen d'étanchéité installé de manière imperdable.
  2. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    les segments d'extrémité (4a, 4b) sont entourés de l'extérieur, radialement par les segments de guidage (5a, 5b).
  3. Installation d'injection de carburant selon la revendication 2,
    caractérisée en ce que
    les segments de guidage (5a, 5b) ont un segment d'introduction (12, 15) de forme conique.
  4. Installation d'injection de carburant selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le moyen d'étanchéité se compose d'une bague en élastomère (17) installée dans une rainure (18).
  5. Installation d'injection de carburant selon la revendication 4,
    caractérisée en ce que
    les bagues en élastomère (17) s'appuient contre une bague d'appui (19).
  6. Installation d'injection de carburant selon l'une des revendications 1 à 3,
    caractérisée en ce que
    les moyens d'étanchéité (17) sont en un élastomère collé sur les segments d'extrémité (4a, 4b).
  7. Installation d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisée en ce qu'
    une plaque de fixation (20) installée sur chaque segment de guidage (4a, 4b) pénètre dans une première ondulation (13) du tube ondulé (21).
  8. Installation d'injection de carburant selon l'une des revendications 1 à 7,
    caractérisée en ce qu'
    au niveau de chaque segment d'extrémité (4a, 4b), la première ondulation (13) du tube ondulé (3) s'applique contre une partie dégagée (14, 16) de l'arrivée (6) de la conduite de distribution de carburant et de façon correspondante au segment d'arrivée (9) de l'injecteur de carburant (2).
EP02767126A 2001-11-30 2002-08-23 Systeme d'injection de carburant Expired - Lifetime EP1454054B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10158788A DE10158788A1 (de) 2001-11-30 2001-11-30 Brennstoffeinspritzanlage
DE10158788 2001-11-30
PCT/DE2002/003096 WO2003048561A1 (fr) 2001-11-30 2002-08-23 Systeme d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1454054A1 EP1454054A1 (fr) 2004-09-08
EP1454054B1 true EP1454054B1 (fr) 2008-02-13

Family

ID=7707528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02767126A Expired - Lifetime EP1454054B1 (fr) 2001-11-30 2002-08-23 Systeme d'injection de carburant

Country Status (7)

Country Link
US (1) US6871634B2 (fr)
EP (1) EP1454054B1 (fr)
JP (1) JP4418678B2 (fr)
KR (1) KR20040063159A (fr)
AT (1) ATE386208T1 (fr)
DE (2) DE10158788A1 (fr)
WO (1) WO2003048561A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004036626A1 (de) * 2004-07-29 2006-03-23 Robert Bosch Gmbh Brennstoffeinspritzsystem
JP4634765B2 (ja) * 2004-09-16 2011-02-16 日産自動車株式会社 燃料噴射弁取付構造
US7107969B2 (en) * 2004-09-28 2006-09-19 Ford Global Technologies, Llc Twist-lock fuel injector assembly
US20060232061A1 (en) * 2005-04-15 2006-10-19 Yasushi Fujiwara Clamp device
DE102005051005A1 (de) * 2005-10-25 2007-04-26 Robert Bosch Gmbh Brennstoffeinspritzventil
US7334571B1 (en) * 2006-08-31 2008-02-26 Gm Global Technology Operations, Inc. Isolation system for high pressure spark ignition direct injection fuel delivery components
JP4584895B2 (ja) * 2006-10-06 2010-11-24 日立オートモティブシステムズ株式会社 電磁式燃料噴射弁
US7527038B2 (en) * 2007-04-02 2009-05-05 Hitachi, Ltd Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber
US7406946B1 (en) * 2007-04-02 2008-08-05 Hitachi, Ltd. Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber
DE102007035714A1 (de) 2007-07-30 2009-02-05 Robert Bosch Gmbh Brennstoff-Einspritzanlage mit Ausgleichselement
JP4558021B2 (ja) * 2007-09-06 2010-10-06 日立オートモティブシステムズ株式会社 燃料噴射弁およびその支持方法
US20110265767A1 (en) * 2010-05-03 2011-11-03 Delphi Technologies, Inc. Isolater for fuel injector
CN113895419B (zh) * 2021-11-25 2023-08-04 中车大连机车车辆有限公司 城轨车辆制动系统空簧供风管路连接结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014355A (en) * 1933-02-27 1935-09-10 United States Gypsum Co Vibration isolating pipe connection
DE2829057A1 (de) * 1978-07-01 1980-01-10 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE2832299A1 (de) * 1978-07-22 1980-01-31 Bosch Gmbh Robert Geraeuschdaempfungseinrichtung
JPS63100262A (ja) 1986-10-16 1988-05-02 Aisan Ind Co Ltd 燃料供給系における脈動減衰装置
US4877187A (en) * 1987-10-23 1989-10-31 Allied-Signal Inc. Unit injector for gasoline engines
DE19725076A1 (de) * 1997-06-13 1998-12-17 Bosch Gmbh Robert Brennstoffeinspritzanlage
JP2001090631A (ja) 1999-09-24 2001-04-03 Otics Corp 燃料分配管
AT4632U1 (de) * 2000-05-25 2001-09-25 Avl List Gmbh Einspritzsystem für eine brennkraftmaschine
DE10157010A1 (de) * 2001-11-21 2003-06-05 Bosch Gmbh Robert Brennstoffeinspritzanlage

Also Published As

Publication number Publication date
DE10158788A1 (de) 2003-06-12
DE50211702D1 (de) 2008-03-27
ATE386208T1 (de) 2008-03-15
WO2003048561A1 (fr) 2003-06-12
JP4418678B2 (ja) 2010-02-17
US6871634B2 (en) 2005-03-29
JP2005511954A (ja) 2005-04-28
US20040112338A1 (en) 2004-06-17
EP1454054A1 (fr) 2004-09-08
KR20040063159A (ko) 2004-07-12

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