EP1963659B1 - Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct - Google Patents

Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct Download PDF

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Publication number
EP1963659B1
EP1963659B1 EP06807287.5A EP06807287A EP1963659B1 EP 1963659 B1 EP1963659 B1 EP 1963659B1 EP 06807287 A EP06807287 A EP 06807287A EP 1963659 B1 EP1963659 B1 EP 1963659B1
Authority
EP
European Patent Office
Prior art keywords
section
space
nozzle needle
fuel injector
coupler
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.)
Not-in-force
Application number
EP06807287.5A
Other languages
German (de)
English (en)
Other versions
EP1963659A1 (fr
Inventor
Wolfgang Stoecklein
Thomas Pauer
Christian Kuhnert
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 EP1963659A1 publication Critical patent/EP1963659A1/fr
Application granted granted Critical
Publication of EP1963659B1 publication Critical patent/EP1963659B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/001—Control chambers formed by movable sleeves

Definitions

  • Such a fuel injector is out EP 1 079 095 A2 in which an actuator arranged in an injector body is connected to an actuator-side coupler piston which depressurizes or pressurizes a coupler space and in which a nozzle needle is exposed to a control space.
  • an intermediate disc is arranged, in which a throttle channel is formed, via which the coupler space and the control chamber are hydraulically connected.
  • the throttle channel has a leading into the coupler space first conical portion and a leading into the control chamber second conical portion. Between the two conical sections, which have a different flow cross-section, a substantially cylindrical third section is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (6)

  1. Injecteur de carburant pour un moteur à combustion interne doté d'un organe de soupape d'injection comportant une aiguille de buse (13) guidée de façon mobile dans le plan axial dans un corps de buse (12) et reliée à un piston de coupleur (34) du côté d'aiguille de buse agissant sur une chambre de commande (38) et avec un actionneur (20) disposé dans un corps d'injecteur (10) et relié à un piston de coupleur (21) du côté d'actionneur alimentant en pression ou déchargeant en pression une chambre de coupleur (32), un disque intermédiaire (40) étant disposé entre le corps d'injecteur (10) et le corps de buse (12) et comportant un canal (50) avec lequel la chambre de coupleur (32) et la chambre de commande (38) sont reliées de façon hydraulique et l'aiguille de buse (13) étant soulevée par un siège de joint d'aiguille de buse (14) en fonction de la pression régnant dans la chambre de commande (38), provoquant l'injection du carburant reposant dans une chambre de pression d'aiguille de buse (16) et alimenté en pression du système, le canal (40) contenant un étranglement (51) hydraulique comportant au moins deux sections (52, 53) avec différentes sections transversales d'écoulement et la première section (52) avec la plus petite section transversale d'écoulement étant orientée vers la chambre de coupleur (32) et la deuxième section (53) avec la plus grande section transversale d'écoulement étant orientée vers la chambre de commande (38), caractérisé en ce qu'une troisième section (54) est placée en amont de la première section (52) par rapport à la chambre de coupleur (32) et qu'une quatrième section (55) est placée en amont de la deuxième section (53) par rapport à la chambre de commande (38) et que la troisième section (54) et la quatrième section (55) possèdent pour l'essentiel la même section transversale d'écoulement à leur tour supérieure à la plus grande section transversale d'écoulement de la deuxième section (53).
  2. Injecteur de carburant selon la revendication 1, caractérisé en ce qu'une transition (56) s'étendant de façon conique et se rétrécissant en direction de la deuxième section (53) est réalisée entre la quatrième section (55) associée à la chambre de commande (38) et la deuxième section (53) de l'étranglement (51).
  3. Injecteur de carburant selon la revendication 1, caractérisé en ce que le canal (40) est disposé de façon excentrée par rapport à l'axe central de la chambre de commande (38) dans le disque intermédiaire (40).
  4. Injecteur de carburant selon la revendication 1, caractérisé en ce que la plus petite section transversale d'écoulement de la section (52) comporte une surface AD et que la chambre de commande (38) comporte une surface de section transversale AS et que le rapport de la surface AD sur la surface de section r transversale AS est compris entre 0,05 et 0,1, de préférence de 0,075 à 0,08.
  5. Injecteur de carburant selon la revendication 1, caractérisé en ce que le disque intermédiaire (40) comporte au moins un canal de liaison (45) reliant sur le plan hydraulique une chambre sous haute pression (17) à la chambre d'aiguille de buse (16).
  6. Injecteur de carburant selon l'une quelconque des revendications 5, caractérisé en ce que plusieurs canaux de liaison (45) en forme de cercle disposés autour de l'axe central de la chambre de commande (38) sont prévus dans le disque intermédiaire (40).
EP06807287.5A 2005-12-12 2006-10-16 Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct Not-in-force EP1963659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005059169A DE102005059169A1 (de) 2005-12-12 2005-12-12 Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied
PCT/EP2006/067428 WO2007068518A1 (fr) 2005-12-12 2006-10-16 Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct

Publications (2)

Publication Number Publication Date
EP1963659A1 EP1963659A1 (fr) 2008-09-03
EP1963659B1 true EP1963659B1 (fr) 2015-12-23

Family

ID=37591844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06807287.5A Not-in-force EP1963659B1 (fr) 2005-12-12 2006-10-16 Injecteur de carburant dote d'un organe de soupape d'injection a actionnement direct

Country Status (6)

Country Link
US (1) US7926737B2 (fr)
EP (1) EP1963659B1 (fr)
JP (1) JP4898830B2 (fr)
CN (1) CN101331312B (fr)
DE (1) DE102005059169A1 (fr)
WO (1) WO2007068518A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009018B4 (de) * 2006-02-27 2016-04-07 Robert Bosch Gmbh Kraftstoffinjektor mit direkt betätigbarer Düsennadel
DE102007042466B3 (de) * 2007-09-06 2009-04-09 Continental Automotive Gmbh Einspritzsystem mit reduzierter Schaltleckage und Verfahren zum Herstellen eines Einspritzsystems
DE102007051554A1 (de) * 2007-10-29 2009-04-30 Robert Bosch Gmbh Kraftstoffeinspritzventil für eine Brennkraftmaschine
DE102009000181A1 (de) * 2009-01-13 2010-07-15 Robert Bosch Gmbh Kraftstoff-Injektor
FR2947200B1 (fr) * 2009-06-25 2011-08-19 Prospection & Inventions Outil de pose d'elements de fixation a injecteur de combustible
DE102010001170A1 (de) * 2010-01-25 2011-07-28 Robert Bosch GmbH, 70469 Einspritzvorrichtung mit reduzierten Druckschwingungen
CN102213166B (zh) * 2010-04-08 2013-01-30 北京亚新科天纬油泵油嘴股份有限公司 一种高压共轨电控喷油器
DE102010031220A1 (de) * 2010-07-12 2012-01-12 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben eines Kraftstoffeinspritzsystems
DE102012203700A1 (de) * 2012-03-08 2013-09-12 Man Diesel & Turbo Se Vorrichtung zum Freigeben eines Strömungsquerschnitts einer Gasleitung
DE102012212264B4 (de) 2012-07-13 2014-02-13 Continental Automotive Gmbh Verfahren zum Herstellen eines Festkörperaktuators
DE102012212266B4 (de) 2012-07-13 2015-01-22 Continental Automotive Gmbh Fluidinjektor
DE102012212614A1 (de) 2012-07-18 2014-01-23 Continental Automotive Gmbh Piezoinjektor mit hydraulisch gekoppelter Düsennadelbewegung
DE102012222509A1 (de) 2012-12-07 2014-06-12 Continental Automotive Gmbh Piezoinjektor
DE102012223934B4 (de) 2012-12-20 2015-10-15 Continental Automotive Gmbh Piezoinjektor
CN104033299B (zh) * 2014-06-19 2016-05-11 中国第一汽车股份有限公司无锡油泵油嘴研究所 一种共轨喷油器
US10544771B2 (en) * 2017-06-14 2020-01-28 Caterpillar Inc. Fuel injector body with counterbore insert

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3197385B2 (ja) * 1993-03-24 2001-08-13 株式会社日本自動車部品総合研究所 燃料噴射弁
DE19624001A1 (de) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE19827267A1 (de) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Kraftstoff-Einspritzventil für Hochdruck-Einspritzung mit verbesserter Steuerung der Kraftstoffzufuhr
GB9919660D0 (en) * 1999-08-20 1999-10-20 Lucas Industries Ltd Fuel injector
DE19947772A1 (de) * 1999-10-05 2001-04-19 Hermann Golle Einspritzventil, insb. für Common-Rail-Einspritzsysteme
DE10006786A1 (de) * 2000-02-18 2001-08-30 Bosch Gmbh Robert Einspritzeinrichtung und Verfahren zum Einspritzen von Fluid
ATE353118T1 (de) * 2000-07-18 2007-02-15 Delphi Tech Inc Kraftstoffeinspritzventil
DE10104618A1 (de) * 2001-02-02 2002-08-08 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10112147A1 (de) * 2001-03-14 2002-09-19 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
JP2003113761A (ja) * 2001-08-01 2003-04-18 Denso Corp 燃料噴射弁
JP3882555B2 (ja) * 2001-09-20 2007-02-21 株式会社デンソー 燃料噴射弁
DE102004005452B4 (de) 2004-02-04 2014-01-09 Robert Bosch Gmbh Düsenhalterkombination mit direktgesteuertem Einspritzventilglied
DE102004037125A1 (de) 2004-07-30 2006-03-23 Robert Bosch Gmbh Common-Rail-Injektor

Also Published As

Publication number Publication date
JP2009518586A (ja) 2009-05-07
WO2007068518A1 (fr) 2007-06-21
US20080302887A1 (en) 2008-12-11
US7926737B2 (en) 2011-04-19
JP4898830B2 (ja) 2012-03-21
CN101331312B (zh) 2011-05-25
EP1963659A1 (fr) 2008-09-03
DE102005059169A1 (de) 2007-06-14
CN101331312A (zh) 2008-12-24

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