EP1797314A1 - Injecteur pour injecter du carburant sur un moteur a combustion interne - Google Patents

Injecteur pour injecter du carburant sur un moteur a combustion interne

Info

Publication number
EP1797314A1
EP1797314A1 EP05766805A EP05766805A EP1797314A1 EP 1797314 A1 EP1797314 A1 EP 1797314A1 EP 05766805 A EP05766805 A EP 05766805A EP 05766805 A EP05766805 A EP 05766805A EP 1797314 A1 EP1797314 A1 EP 1797314A1
Authority
EP
European Patent Office
Prior art keywords
bore
filter
fuel
injector
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.)
Granted
Application number
EP05766805A
Other languages
German (de)
English (en)
Other versions
EP1797314B1 (fr
Inventor
Andreas Wengert
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 EP1797314A1 publication Critical patent/EP1797314A1/fr
Application granted granted Critical
Publication of EP1797314B1 publication Critical patent/EP1797314B1/fr
Not-in-force 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
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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

Definitions

  • FIG. 1 shows a
  • the injector 20 has a multipart injector body 28 in which the fuel injection valve 24 is arranged at its end region facing the combustion chamber of the cylinder.
  • the fuel injection valve 24 has at least one injection valve member 30, which in a Bore 32 is slidably guided.
  • the injection valve member 30 at least one, preferably a plurality of injection openings 34 distributed over the circumference of the injector 20 is controlled at the end of the injector body 28 projecting into the combustion chamber.
  • Injection valve member 30 has, at its end region facing the combustion chamber, an approximately conical sealing surface 36, for example, which cooperates with an approximately cone-shaped valve seat 38 formed in the injector body 28 in its end region facing the combustion chamber, from or after which the injection openings 34 are discharged.
  • an annular space 40 is present between the injection valve member 30 and the bore 32 toward the valve seat 38, which merges in its end region remote from the valve seat 38 by a radial widening of the bore 32 into a pressure chamber 42 surrounding the injection valve member 30.
  • the injection valve member 30 has at the level of the pressure chamber 42 by a cross-sectional reduction to its sealing surface 36 toward a pressure shoulder 44.
  • a prestressed closing spring 46 At the end remote from the combustion chamber of the injection valve member 30 engages a prestressed closing spring 46, through which 4 s injection valve member 30 is pressed with its sealing surface 36 to the valve seat 38.
  • Fuel line 18 is an annular shoulder 74 is formed. On the end region of the fuel line 18, a hollow screw 76 is arranged, whose inner diameter is smaller than the outer diameter of the thickening 70 of the fuel line 18. The hollow screw 76 is with her
  • the outer bore portion 63 of the filter bore 60 is separated from the inner bore portion 62, wherein only the inner bore portion 62, in which the fuel filter 64 is disposed, is subjected to high pressure, the seal by the against the sealing seat 66 pressed fuel line 18 takes place.
  • the position of the further bore 68 and the sealing seat 66 can be selected independently of the position of the filter bore 60 depending on the space available.
  • the further bore 68 into which the end region of the fuel line 18 dips, is formed in a protruding from the injector body 28 stub 80 which is provided with an external thread 81.
  • the filter bore 60 penetrates the nozzle 80 of the
  • the thickening 70 is arranged, which has the sealing surface 72 facing the sealing seat 66 and the annular shoulder 74 facing away from the latter.
  • a sleeve 82 is arranged, whose inner diameter is smaller than the outer diameter of the thickening 70, so that the sleeve 82 comes with its front side in the axial direction of the annular shoulder 74 of the thickening 70 for conditioning.
  • the sleeve 82 dips into the bore 68 together with the end portion of the fuel line 18.
EP05766805A 2004-09-28 2005-07-18 Injecteur pour injecter du carburant sur un moteur a combustion interne Not-in-force EP1797314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004046888A DE102004046888A1 (de) 2004-09-28 2004-09-28 Injektor zur Kraftstoffeinspritzung an einer Brennkraftmaschine
PCT/EP2005/053430 WO2006034890A1 (fr) 2004-09-28 2005-07-18 Injecteur pour injecter du carburant sur un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1797314A1 true EP1797314A1 (fr) 2007-06-20
EP1797314B1 EP1797314B1 (fr) 2008-04-16

Family

ID=34972640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05766805A Not-in-force EP1797314B1 (fr) 2004-09-28 2005-07-18 Injecteur pour injecter du carburant sur un moteur a combustion interne

Country Status (7)

Country Link
US (1) US7878427B2 (fr)
EP (1) EP1797314B1 (fr)
JP (1) JP4532557B2 (fr)
AT (1) ATE392547T1 (fr)
DE (2) DE102004046888A1 (fr)
ES (1) ES2302217T3 (fr)
WO (1) WO2006034890A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006019308A1 (de) * 2006-04-26 2007-10-31 Robert Bosch Gmbh Injektor
EP2090772B1 (fr) * 2008-02-15 2012-04-25 Continental Automotive GmbH Ensemble de couplage
DE102008002528A1 (de) * 2008-06-19 2009-12-24 Robert Bosch Gmbh Kraftstoff-Injektor
AT509177B1 (de) * 2009-11-23 2013-09-15 Bosch Gmbh Robert Druckrohrstutzen für common-rail-einspritzsystem
JP5218583B2 (ja) * 2011-03-09 2013-06-26 株式会社デンソー インジェクタ

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897800A (en) * 1956-05-18 1959-08-04 Continental Motors Corp Fuel injection nozzle construction and mounting
US4111370A (en) * 1977-04-08 1978-09-05 Caterpillar Tractor Co. Fuel inlet fitting for a fuel injection nozzle
US4266728A (en) * 1978-12-22 1981-05-12 Ambac Industries, Incorporated Leakless fuel injection nozzle and holder assembly
DE3122883A1 (de) * 1981-06-10 1983-01-05 Volkswagenwerk Ag, 3180 Wolfsburg "kraftstoffeinspritzanlage fuer eine brennkraftmaschine"
DE4005774A1 (de) * 1990-02-23 1991-08-29 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE19524520A1 (de) * 1995-07-05 1997-01-09 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
JP3584554B2 (ja) * 1995-07-26 2004-11-04 株式会社デンソー 蓄圧式燃料噴射装置
DE19547423B4 (de) * 1995-12-19 2008-09-18 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19608608A1 (de) * 1996-03-06 1997-09-11 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19832940A1 (de) * 1998-07-22 2000-01-27 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
GB9823028D0 (en) * 1998-10-22 1998-12-16 Lucas Ind Plc Fuel injector
DE19850390A1 (de) * 1998-11-02 2000-05-04 Bosch Gmbh Robert Haltekörper für ein Kraftstoffeinspritzventil für Brennkraftmaschinen
GB9824272D0 (en) 1998-11-06 1998-12-30 Lucas Ind Plc Filter
DE10002715A1 (de) * 2000-01-22 2001-07-26 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen und ein Verfahren zur Herstellung desselben
FR2815085B1 (fr) * 2000-10-05 2005-07-08 Denso Corp Structure perfectionnee d'injecteur de carburant destinee a eviter l'injection d'une quantite excessive de carburant
DE10057683B4 (de) 2000-11-21 2005-10-06 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
WO2002042632A2 (fr) * 2000-11-23 2002-05-30 Robert Bosch Gmbh Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne
ITTO20010969A1 (it) * 2001-10-12 2003-04-12 C R F Societa Con Sortile Per Perfezionamenti ad un iniettore di combustibile per motori endotermici, avente una valvola di dosaggio elettromagnetica.
US6719224B2 (en) * 2001-12-18 2004-04-13 Nippon Soken, Inc. Fuel injector and fuel injection system
JP3882661B2 (ja) * 2002-04-05 2007-02-21 株式会社デンソー 燃料噴射装置
ITBO20030678A1 (it) * 2003-11-14 2005-05-15 Magneti Marelli Powertrain Spa Iniettore di carburante con attuazione idraulica dello spillo

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006034890A1 *

Also Published As

Publication number Publication date
EP1797314B1 (fr) 2008-04-16
WO2006034890A1 (fr) 2006-04-06
JP4532557B2 (ja) 2010-08-25
DE102004046888A1 (de) 2006-03-30
US7878427B2 (en) 2011-02-01
ATE392547T1 (de) 2008-05-15
DE502005003776D1 (de) 2008-05-29
US20080093481A1 (en) 2008-04-24
JP2008514856A (ja) 2008-05-08
ES2302217T3 (es) 2008-07-01

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