EP1460264A1 - Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs - Google Patents

Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs Download PDF

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Publication number
EP1460264A1
EP1460264A1 EP04290554A EP04290554A EP1460264A1 EP 1460264 A1 EP1460264 A1 EP 1460264A1 EP 04290554 A EP04290554 A EP 04290554A EP 04290554 A EP04290554 A EP 04290554A EP 1460264 A1 EP1460264 A1 EP 1460264A1
Authority
EP
European Patent Office
Prior art keywords
injector
cannula
bore
nozzle
ramp
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
EP04290554A
Other languages
English (en)
French (fr)
Other versions
EP1460264B1 (de
Inventor
Alain Bredeka
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1460264A1 publication Critical patent/EP1460264A1/de
Application granted granted Critical
Publication of EP1460264B1 publication Critical patent/EP1460264B1/de
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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M55/02—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
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • 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
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa

Definitions

  • the present invention relates to a fuel injection device for an internal combustion engine, in particular for a motor vehicle.
  • Internal combustion engines include fuel injectors which are connected, on the one hand, to a fuel supply manifold and, on the other hand, to electrical connection means with an engine control computer.
  • Each injector has a lower injection end, an upper supply end intended to be connected to the fuel supply rail and a connector connected by electrical cables to an electromagnetic coil disposed inside the injector and controlling the movement of the needle of this injector.
  • the feed ramp comprises parallel nozzles and extending substantially perpendicular to the longitudinal axis of the ramp, each of these nozzles being intended to fit on the feed end of an injector.
  • the injectors are first mounted on the cylinder head of the engine and the supply ramp is then mounted by placing each nozzle directly on an upper end of an injector or by inserting a socket between the nozzle and the upper end of each injector.
  • each injector To obtain a good efficiency of the internal combustion engine and to fight effectively against pollution, each injector must have a precise position in the cylinder head. Thus, during assembly or each intervention in after-sales service, the position of each injector must be adjusted with precision, which leads to tedious operations and thereby multiplies the risks of incorrect adjustment.
  • the invention aims to avoid these drawbacks by proposing a fuel injection device which is particularly simple to install on internal combustion engines.
  • the invention therefore relates to a fuel injection device for an internal combustion engine, in particular in a motor vehicle, of the type comprising a fuel supply ramp comprising a longitudinal body and, for each injector, a nozzle s' extending substantially perpendicular to the axis of the body and an electrical connection with a connector intended to be connected to an engine control computer, characterized in that it comprises, for each injector, a cannula connecting said injector with the corresponding nozzle of the ramp and comprising, at each of its ends, a ball joint and a locking member in the connection position to form a non-removable assembly comprising the ramp, the cannulas and the injectors.
  • FIG 1 there is schematically shown in perspective an injection device designated as a whole by the reference 1 and which is intended to supply the injectors 40 of an internal combustion engine with fuel and electrical energy.
  • the injection device comprises four injectors 40 each comprising a lower injection end 41 and an upper supply end 42 intended to be connected to a rail 10 for injection of fuel.
  • the supply ramp 10 comprises a longitudinal body 11 pierced with an axial duct 12 intended to be connected to a fuel supply pipe, not shown.
  • the ramp 10 also includes four nozzles 13 extending parallel to each other and substantially perpendicular to the longitudinal axis of the body 11 of said ramp 10.
  • Each nozzle 13 is pierced with a channel 14 which opens at one end 14a in the axial duct 12 and at another end 14b in a bore 15 formed at the free end of the corresponding nozzle 13.
  • the bore 15 comprises, from the end 14b of the channel 14 to the free end of the nozzle 13, a hemispherical bottom 15a, a first cylindrical portion 15b, a second cylindrical portion 15c of larger diameter than the first cylindrical portion 15b and an inlet provided with a chamfer 15d.
  • the second cylindrical portion 15c is provided with a groove 16.
  • This upper end 42 of the injector 40 has a bore 43 comprising a hemispherical bottom 43a, a first cylindrical portion 43b, a second cylindrical portion 43c of larger diameter than the first cylindrical portion 43b and an inlet provided with a chamfer 43d.
  • the second cylindrical portion 43c has a groove 44.
  • each nozzle 13 of the ramp 10 has a shape identical to the bore 43 of each injector 40.
  • the injection device also comprises, for each injector 40, a cannula 20 for connecting the injector 40 with the nozzle 13 of the ramp 10.
  • each cannula 20 comprises, at each of its ends, a ball joint and a locking member in the connection position to form a non-removable assembly comprising the ramp 10, the cannulas 20 and the injectors 40, as will be seen. later.
  • the cannula 20 is formed by a body 21 of generally cylindrical shape pierced with an axial channel 22 opening at each end of said body 21 and intended to put in communication the channel 14 of the nozzle 13 with the corresponding injector 40.
  • the body 21 of the cannula 20 has two ends, respectively 23 and 24 which are similar, which avoids a particular mounting direction of the cannula 20 thus making it possible to mount the end 23, ie in the bore 15 of the nozzle 13 , either in the bore 43 of the injector 40 and the end 24, or in said bore 15 or in said bore 43.
  • the end 23 of the body 21 of the cannula 20 comprises a hemispherical end surface 23a and a cylindrical portion of shape complementary to the bores 15 and 43, comprising a first part 23b and a second part 23c of larger diameter than said first part 23b.
  • the part 23c is equipped with a blocking member in the bore 15 or in the bore 43 and which is constituted by an elastic ring 26, of the circlip type mounted in a groove 27.
  • This elastic ring 26 is, as is will be seen later, movable between a retracted position in the groove 27 during assembly of the cannula 20 and a projecting position in the groove 16 or 44 of the bore 15 or 43.
  • the first part 23b of the cylindrical portion of the end 23 is also provided with a sealing element with the bore 15 or the bore 43 and which is constituted by an O-ring 28 and an anti-extrusion washer 29 mounted in a groove 30.
  • the end 24 of the body 21 of the cannula 20 has a hemispherical end surface 24a and a cylindrical portion comprising a first part 24b and a second part 24c of larger diameter.
  • the second part 24c is provided with a blocking member which is formed by an elastic ring 31 of the circlip type mounted in a groove 32 and movable, as will be seen later, between a retracted position in the groove 32 during insertion from the end 24 of the cannula 20 in the bore 15 or in the bore 43 and a position projecting into the groove 16 or 44 for blocking the cannula 20.
  • the part 24b of the end 24 of the cannula 20 is equipped with a sealing element with the bore 15 or the bore 43 and which is constituted by an O-ring 33 and an anti-extrusion washer 34 mounted in a groove 35.
  • the assembly of the assembly constituted by the ramp 10, the cannulas 20 and the injectors 40 is carried out as follows.
  • the end 23 of the cannula 20 is fitted into the bore 15 of the nozzle 13 which causes, at first, the displacement of the elastic ring 26 in the retracted position by the chamfer 15d formed at the entry of the bore 15, then the displacement of this elastic ring 26 in a projecting position when this elastic ring 26 is opposite the groove 16.
  • the cannula 20 is secured to the ramp 10 and is non-removable due to the inaccessibility of the ring 26 from the outside.
  • the seal between the end 23 of the cannula 20 and the bore 15 of the nozzle 13 is produced by the O-ring 28.
  • the contact of the hemispherical end surface 23a with the hemispherical bottom 15a forms a ball joint which allows an angular movement of the cannula 20 relative to the nozzle 13.
  • each injector 40 is mounted on a cannula 20.
  • the end 24 of the body 21 of the cannula 20 is fitted into the bore 43 which causes, during sliding, the displacement of the elastic ring 31 by the chamfer 43d from the end of the bore 43 between a retracted position in the groove 32 and a projecting position when this washer 31 is located opposite the groove 44 to secure the injector 40 with the cannula 20.
  • This injector 40 cannot be removed from the cannula 20 of the made of the inaccessibility of the elastic ring 31 from the outside.
  • the seal between the end 24 of the cannula 20 and the bore 43 of the injector 40 is obtained by the O-ring 33.
  • the contact of the hemispherical end surface 24a with the hemispherical bottom 43a forms a ball which allows angular movement of the cannula 20 relative to the nozzle 13.
  • the assembly formed by the ramp 10 comprising the body 11 and the nozzles 13, the cannulas 20 and the injectors 40 form a coherent and non-removable assembly.
  • the ramp 10, the cannulas 20 and the upper ends 42 of the injectors 40 are overmolded in a plastic material 45, as shown in FIGS. 1 and 5.
  • the plastic material 45 has been removed for one of the cannulas 20.
  • the injection device comprises, for each injector, an electrical connection 46 embedded in the plastic 45, connected to an electrical connector, not shown, mounted on the ramp 15 and which is itself intended to be connected to a internal combustion engine control computer.
  • the assembly thus formed is mounted in a cylinder head A of an internal combustion engine, as shown in Figure 5.
  • This injection device allows the mounting of the injectors 40 between the two camshafts B of an internal combustion engine where the passage of the hands for the installation or the extraction of these injectors is particularly difficult .
  • each injector 40 is positioned vertically in the cylinder head A and it rests on horizontal surfaces so that the positioning accuracy of each of said injectors 40 is easier to maintain in mass production.
  • the injection device according to the invention forms a monobloc assembly, which makes it possible to obtain a correctly adjusted and assembled assembly for good efficiency of the internal combustion engine. Reliability is increased by the fact that it is no longer necessary to dismantle the injectors in after-sales service and these can be paired as original equipment during the manufacture of the internal combustion engine.
  • the injection device according to the invention has the advantage of having only one electrical connection for all of the injectors, which allows time to be saved in series connection and better quality. .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
EP04290554A 2003-03-19 2004-03-01 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs Expired - Lifetime EP1460264B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0303373A FR2852636B1 (fr) 2003-03-19 2003-03-19 Dispositif d'injection de carburant pour moteur a combustion interne, notamment d'un vehicule automobile.
FR0303373 2003-03-19

Publications (2)

Publication Number Publication Date
EP1460264A1 true EP1460264A1 (de) 2004-09-22
EP1460264B1 EP1460264B1 (de) 2006-05-24

Family

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EP04290554A Expired - Lifetime EP1460264B1 (de) 2003-03-19 2004-03-01 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs

Country Status (4)

Country Link
EP (1) EP1460264B1 (de)
AT (1) ATE327425T1 (de)
DE (1) DE602004000933T2 (de)
FR (1) FR2852636B1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1780403A2 (de) 2005-10-25 2007-05-02 Robert Bosch Gmbh Brennstoffeinspritzventil
WO2008088993A1 (en) * 2007-01-11 2008-07-24 Millennium Industries, Inc. Welded fuel injector attachment
WO2009058283A1 (en) * 2007-10-29 2009-05-07 Caterpillar Inc. Fuel system having a one-piece hollow tube connection
EP2093412A1 (de) 2008-02-19 2009-08-26 Continental Automotive GmbH Kupplungsvorrichtung
CN102032083A (zh) * 2009-09-29 2011-04-27 通用汽车环球科技运作公司 包括安装有凸轮罩的燃料轨的发动机组件
US7934488B2 (en) 2008-02-19 2011-05-03 Continental Automotive Gmbh Coupling device
US7976073B2 (en) 2008-02-19 2011-07-12 Continental Automotive Gmbh Coupling device
US8245697B2 (en) 2009-01-19 2012-08-21 Continental Automotive Gmbh Coupling device
CN103016228A (zh) * 2011-09-26 2013-04-03 株式会社电装 燃油轨及使用该燃油轨的燃油喷射装置
EP2910768A1 (de) * 2014-02-25 2015-08-26 Continental Automotive GmbH Kraftstoffleistenvorrichtung für einen Verbrennungsmotor und Verfahren zu ihrer Herstellung
JP2021148047A (ja) * 2020-03-18 2021-09-27 臼井国際産業株式会社 ガソリン直噴レール

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2090772B1 (de) 2008-02-15 2012-04-25 Continental Automotive GmbH Verbindungsanordnung
DE102009050337A1 (de) * 2009-10-22 2011-04-28 GM Global Technology Operations, Inc., Detroit Bauteileeinheit für ein Kraftstoffsystem einer Brennkraftmaschine sowie Brennkraftmaschine
DE102017216643A1 (de) * 2017-09-20 2019-03-21 Robert Bosch Gmbh Wassereinspritzvorrichtung einer Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418911B1 (en) * 2001-07-13 2002-07-16 Siemens Diesel Systems Technology Device and procedure for coupling a fluid rail with fuel injectors
DE10108203A1 (de) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Montagebügel und Verfahren zur Montage eines Brennstoffeinspritzventils
WO2003006813A2 (en) * 2001-07-13 2003-01-23 Siemens Diesel Systems Technology Vdo Device and method for coupling a fluid rail with fuel injectors
US6564775B1 (en) * 1999-08-03 2003-05-20 Aisan Kogyo Kabushiki Kaisha Fuel delivery pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6564775B1 (en) * 1999-08-03 2003-05-20 Aisan Kogyo Kabushiki Kaisha Fuel delivery pipes
DE10108203A1 (de) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Montagebügel und Verfahren zur Montage eines Brennstoffeinspritzventils
US6418911B1 (en) * 2001-07-13 2002-07-16 Siemens Diesel Systems Technology Device and procedure for coupling a fluid rail with fuel injectors
WO2003006813A2 (en) * 2001-07-13 2003-01-23 Siemens Diesel Systems Technology Vdo Device and method for coupling a fluid rail with fuel injectors

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1780403A3 (de) * 2005-10-25 2007-11-21 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005051005B4 (de) * 2005-10-25 2025-01-02 Robert Bosch Gmbh Brennstoffeinspritzventil
EP1780403A2 (de) 2005-10-25 2007-05-02 Robert Bosch Gmbh Brennstoffeinspritzventil
WO2008088993A1 (en) * 2007-01-11 2008-07-24 Millennium Industries, Inc. Welded fuel injector attachment
WO2009058283A1 (en) * 2007-10-29 2009-05-07 Caterpillar Inc. Fuel system having a one-piece hollow tube connection
US8286612B2 (en) 2008-02-19 2012-10-16 Continental Automotive Gmbh Coupling device
EP2093412A1 (de) 2008-02-19 2009-08-26 Continental Automotive GmbH Kupplungsvorrichtung
US7934488B2 (en) 2008-02-19 2011-05-03 Continental Automotive Gmbh Coupling device
US7976073B2 (en) 2008-02-19 2011-07-12 Continental Automotive Gmbh Coupling device
US8245697B2 (en) 2009-01-19 2012-08-21 Continental Automotive Gmbh Coupling device
US8307809B2 (en) 2009-09-29 2012-11-13 GM Global Technology Operations LLC Engine assembly including cam cover mounted fuel rail
CN102032083A (zh) * 2009-09-29 2011-04-27 通用汽车环球科技运作公司 包括安装有凸轮罩的燃料轨的发动机组件
CN103016228A (zh) * 2011-09-26 2013-04-03 株式会社电装 燃油轨及使用该燃油轨的燃油喷射装置
US9062640B2 (en) 2011-09-26 2015-06-23 Denso Corporation Fuel rail and fuel injection apparatus using the same
CN103016228B (zh) * 2011-09-26 2015-11-18 株式会社电装 燃油轨及使用该燃油轨的燃油喷射装置
CN105257446A (zh) * 2011-09-26 2016-01-20 株式会社电装 燃油轨及使用该燃油轨的燃油喷射装置
EP2910768A1 (de) * 2014-02-25 2015-08-26 Continental Automotive GmbH Kraftstoffleistenvorrichtung für einen Verbrennungsmotor und Verfahren zu ihrer Herstellung
JP2021148047A (ja) * 2020-03-18 2021-09-27 臼井国際産業株式会社 ガソリン直噴レール
EP4102049A4 (de) * 2020-03-18 2024-02-28 Usui Co., Ltd. Benzindirekteinspritzungsverteilerrohr

Also Published As

Publication number Publication date
FR2852636A1 (fr) 2004-09-24
ATE327425T1 (de) 2006-06-15
DE602004000933D1 (de) 2006-06-29
DE602004000933T2 (de) 2006-12-28
FR2852636B1 (fr) 2005-06-17
EP1460264B1 (de) 2006-05-24

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