EP2476891A1 - Injecteur - Google Patents

Injecteur Download PDF

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Publication number
EP2476891A1
EP2476891A1 EP11189468A EP11189468A EP2476891A1 EP 2476891 A1 EP2476891 A1 EP 2476891A1 EP 11189468 A EP11189468 A EP 11189468A EP 11189468 A EP11189468 A EP 11189468A EP 2476891 A1 EP2476891 A1 EP 2476891A1
Authority
EP
European Patent Office
Prior art keywords
injector
antechamber
actuator
pressure
membrane
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
EP11189468A
Other languages
German (de)
English (en)
Other versions
EP2476891B1 (fr
Inventor
Uwe Jung
Gabriel Marzahn
Wolfgang Reisinger
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.)
Aumovio Germany GmbH
Original Assignee
Continental Automotive Technologies 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 Continental Automotive Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP2476891A1 publication Critical patent/EP2476891A1/fr
Application granted granted Critical
Publication of EP2476891B1 publication Critical patent/EP2476891B1/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
    • 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
    • F02M47/027—Electrically actuated valves draining the chamber to release the 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Definitions

  • the removal of fuel through injection and switching leakage triggers pressure waves in the high and low pressure area of the injector.
  • the liquid fuel which is located in front of the membrane surface, must be pushed away. In the case of the piezoelectric element, this displacement must occur within a charging time of the piezoelectric element.
  • a charging time of a piezo element is in particular 200 ⁇ s.
  • the inertia of the incompressible liquid column causes a pressure peak of, for example, 40 bar and thus a high counterforce.
  • the liquid, ie the fuel returns to the Aktormembranvorraum back again, either driven by the leakage overpressure or due to pressure wave reflections in the leakage chamber.
  • the medium comprises a gas.
  • Gas has the advantage that it is particularly compressible, so that such a body can compensate for significant pressure changes.
  • the gas is air.
  • Air has the advantage that it does not have to be produced consuming and is not harmful to health.
  • fuel is at a high pressure, typically 1000 bar to 2000 bar, both in the control chamber 121 and in the high pressure chamber of the nozzle, ie the nozzle high pressure chamber 129.
  • the connecting channel 119 between the control chamber 121 and the fluid return line is closed by means of the control valve 117.
  • a hydraulic force exerted by the high pressure fuel on the nozzle needle 125 in the control chamber 121 is greater than the hydraulic force acting on a nozzle needle tip 135, since an area of the control piston 123 in the control chamber 121 is greater than a free area under the nozzle needle 125.
  • the injector nozzle 127 of the injector 101 is closed in this respect.
  • Fig. 2 shows a detail view in a sectional view of an antechamber 201 of an injector 203 according to the prior art, wherein the known vestibule 201 is at least partially constructed similar to the antechamber 111 of the injector 101 Fig. 1 , In that regard, the same reference numbers are used for the same elements at the appropriate place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP11189468.9A 2011-01-13 2011-11-17 Injecteur Not-in-force EP2476891B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011008467.3A DE102011008467B4 (de) 2011-01-13 2011-01-13 Injektor mit Druckausgleichsmitteln

Publications (2)

Publication Number Publication Date
EP2476891A1 true EP2476891A1 (fr) 2012-07-18
EP2476891B1 EP2476891B1 (fr) 2015-04-01

Family

ID=45375165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11189468.9A Not-in-force EP2476891B1 (fr) 2011-01-13 2011-11-17 Injecteur

Country Status (4)

Country Link
US (1) US20120180755A1 (fr)
EP (1) EP2476891B1 (fr)
CN (1) CN102588172B (fr)
DE (1) DE102011008467B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214758B4 (de) * 2013-07-29 2023-04-20 Zf Friedrichshafen Ag Anordnung zur Ölversorgung eines Automatgetriebes
DE102014225642B4 (de) * 2014-12-12 2016-06-30 Continental Automotive Gmbh Ventilanordnung und Hochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908618A2 (fr) * 1997-10-09 1999-04-14 Denso Corporation Dispositif d'injection de combustible à accumulation
EP1036932A2 (fr) * 1999-03-18 2000-09-20 Delphi Technologies, Inc. Injecteur de carburant
JP2003083199A (ja) * 2001-09-05 2003-03-19 Piolax Inc 燃料デリバリパイプ用パルセーションダンパ
DE102006000023A1 (de) * 2005-01-25 2006-07-27 Denso Corp., Kariya Kraftstoffeinspritzung für eine Brennkraftmaschine
DE102006027780A1 (de) * 2006-06-16 2007-12-20 Robert Bosch Gmbh Kraftstoffinjektor

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542389A (en) * 1946-11-09 1951-02-20 American Bosch Corp Combined ignition timer and fuel injection unit
US2781869A (en) * 1951-03-09 1957-02-19 Houdaille Industries Inc Telescopic shock absorbers
GB880369A (en) * 1958-09-24 1961-10-18 Bosch Gmbh Robert Electromagnetically actuated fuel injection valve for internal combustion engines
DE3031134A1 (de) * 1980-08-18 1981-11-05 Hermann Dr.-Ing. 6229 Walluf Frank Membranantrieb fuer die betaetigungseinrichtung an gasbrennern fuer laboratorien
ES2018199B3 (es) * 1986-06-11 1991-04-01 R Nussbaum Ag Dispositivo para amortiguar los efectos de los golpes de presion en tuberias, especialmente en instalaciones sanitarias.
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
US20050192727A1 (en) * 1994-05-09 2005-09-01 Automotive Technologies International Inc. Sensor Assemblies
DE19531811A1 (de) * 1995-08-30 1997-03-06 Bosch Gmbh Robert Kraftstoffeinspritzpumpe
EP0931358B1 (fr) * 1996-09-30 2002-02-27 Siemens Aktiengesellschaft Organe de reglage comportant un actionneur a longueur reglable et dispositif pour la transmission du deplacement d'un actionneur
DE19650900A1 (de) * 1996-12-07 1998-06-10 Bosch Gmbh Robert Piezoelektrischer Aktuator
DE29708369U1 (de) * 1997-05-09 1997-07-10 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Steuerbares Einspritzventil für die Kraftstoffeinspritzung an Brennkraftmaschinen
JP3552464B2 (ja) * 1997-05-30 2004-08-11 三菱電機株式会社 機関の燃料供給装置
DE19726481A1 (de) * 1997-06-21 1998-12-24 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
US5992768A (en) * 1997-12-08 1999-11-30 Caterpillar Inc. Fluid seal for cyclic high pressures within a fuel injector
DE10026642A1 (de) * 2000-05-29 2001-12-13 Siemens Ag Einspritzventil mit einem Zulaufventil zu einer Arbeitskammer
DE10123172A1 (de) * 2001-05-12 2002-11-14 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10233100A1 (de) * 2002-07-20 2004-01-29 Robert Bosch Gmbh Piezoelektrisches Aktormodul und Verfahren zur Montage eines piezoelektrischen Aktormoduls
US6915786B2 (en) * 2002-12-10 2005-07-12 Dana Corporation Damper for a fluid system
DE10327181A1 (de) * 2003-06-17 2005-01-13 Robert Bosch Gmbh Kraftstoffeinspritzsystem
DE102004008590B3 (de) * 2004-02-19 2005-08-11 Benteler Automobiltechnik Gmbh Vorrichtung zur Dämpfung von Druckschwingungen
DE102004011443A1 (de) * 2004-03-09 2005-09-22 Bosch Rexroth Ag Niederdruck-Hydrospeicher
DE102004050224A1 (de) * 2004-10-15 2006-04-20 Robert Bosch Gmbh Aktormodul
ATE511014T1 (de) * 2006-03-20 2011-06-15 Delphi Tech Holding Sarl Dämpfungsanordnung für ein einspritzventil
JP4686501B2 (ja) * 2007-05-21 2011-05-25 日立オートモティブシステムズ株式会社 液体脈動ダンパ機構、および液体脈動ダンパ機構を備えた高圧燃料供給ポンプ
JP4530053B2 (ja) * 2008-01-22 2010-08-25 株式会社デンソー 燃料ポンプ
JP5195451B2 (ja) * 2008-04-15 2013-05-08 株式会社デンソー 燃料噴射装置、それに用いられる蓄圧式燃料噴射装置システム
JP5099034B2 (ja) * 2009-02-12 2012-12-12 株式会社デンソー 燃料噴射弁
EP2518328A1 (fr) * 2011-04-26 2012-10-31 Carl Freudenberg KG Accumulateur de pression et utilisation d'un corps d'équilibrage de pression associé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908618A2 (fr) * 1997-10-09 1999-04-14 Denso Corporation Dispositif d'injection de combustible à accumulation
EP1036932A2 (fr) * 1999-03-18 2000-09-20 Delphi Technologies, Inc. Injecteur de carburant
JP2003083199A (ja) * 2001-09-05 2003-03-19 Piolax Inc 燃料デリバリパイプ用パルセーションダンパ
DE102006000023A1 (de) * 2005-01-25 2006-07-27 Denso Corp., Kariya Kraftstoffeinspritzung für eine Brennkraftmaschine
DE102006027780A1 (de) * 2006-06-16 2007-12-20 Robert Bosch Gmbh Kraftstoffinjektor

Also Published As

Publication number Publication date
DE102011008467B4 (de) 2014-01-02
CN102588172B (zh) 2016-03-30
CN102588172A (zh) 2012-07-18
DE102011008467A1 (de) 2012-07-19
EP2476891B1 (fr) 2015-04-01
US20120180755A1 (en) 2012-07-19

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