EP1781931B1 - Gicleur d'injection pour moteurs a combustion interne - Google Patents

Gicleur d'injection pour moteurs a combustion interne Download PDF

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Publication number
EP1781931B1
EP1781931B1 EP05772740A EP05772740A EP1781931B1 EP 1781931 B1 EP1781931 B1 EP 1781931B1 EP 05772740 A EP05772740 A EP 05772740A EP 05772740 A EP05772740 A EP 05772740A EP 1781931 B1 EP1781931 B1 EP 1781931B1
Authority
EP
European Patent Office
Prior art keywords
valve
oil
needle
motor
lubricant
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.)
Active
Application number
EP05772740A
Other languages
German (de)
English (en)
Other versions
EP1781931A1 (fr
Inventor
Jaroslav Hlousek
Franz Guggenbichler
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
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1781931A1 publication Critical patent/EP1781931A1/fr
Application granted granted Critical
Publication of EP1781931B1 publication Critical patent/EP1781931B1/fr
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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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • F02M53/043—Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07—Nozzles and injectors with controllable fuel supply
    • F02M2700/077—Injectors having cooling or heating means

Definitions

  • Injectors for common rail systems for injecting high viscosity fuels into the combustion chamber of internal combustion engines are known in various forms. In the case of heavy oil, heating up to 150 ° C is required to achieve the necessary injection viscosity. With a high proportion of abrasive solids and a high temperature naturally increases the Veschl employ and thus affects the reliability.
  • an injector for a common rail injection system has different parts, which are usually held together by a nozzle retaining nut.
  • the actual injector nozzle contains a nozzle needle, which is guided axially displaceably in the nozzle body of the injector nozzle and has a plurality of open spaces through which fuel can flow from the nozzle antechamber to the needle tip.
  • the nozzle needle itself carries a collar on which a compression spring is supported, and immersed in a control chamber, which can be acted upon with fuel under pressure.
  • At this control room can be an inlet channel be connected via an inlet throttle and an outlet channel via an outlet throttle, wherein the respective pressure built up in the control chamber together with the force of the compression spring holds the nozzle needle in the closed position.

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)
  • Nonmetallic Welding Materials (AREA)

Claims (3)

  1. Buse d'injection pour injecter des carburants dans la chambre de combustion d'un moteur à combustion interne, comprenant une aiguille d'injection (7) guidée de manière longitudinalement coulissante dans la buse d'injection (5), l'aiguille d'injection (7) plongeant dans une chambre de contrôle (12), qui peut être alimentée avec du carburant sous pression, la pression de la chambre de contrôle (12) étant réglable par la valve de contrôle (16) ouvrant ou fermant au moins un conduit d'amenage ou d'écoulement, caractérisée en ce que des conduits sont arrangés dans la région de l'aiguille d'injection (7) qui sont abouchées à des conduits d'huile lubrifiante ou bien d'huile de moteur pouvant être traversés par de l'huile lubrifiante ou bien par de l'huile de moteur et en ce que des conduits sont ainsi arrangés dans la région de la valve de contrôle (12) et/ou dans la région d'un aimant électrique qui sont abouchés à des conduits d'huile lubrifiante ou bien d'huile de moteur pouvant être traversés par de l'huile lubrifiante ou bien par de l'huile de moteur et en ce qu'une ligne d'accord (27) avec de l'huile lubrifiante, en particulier avec de l'huile de moteur débouche sur l'aiguille (18) de la valve coopérante avec le siège (19) de la valve.
  2. Buse d'injection selon la revendication 1, caractérisée en ce que le siège (19) de la valve (16) est arrangé dans une douille (23) de valve de matériel résistant à l'usure
  3. Buse d'injection selon la revendication 1 ou 2, caractérisée en ce que l'aiguille (18) de la valve sur sa périphérie porte des rainures ou des cannelures, coopérantes avec des lignes d'accord (27) débouchant à la périphérie de l'aiguille (18) de la valve.
EP05772740A 2004-08-24 2005-08-18 Gicleur d'injection pour moteurs a combustion interne Active EP1781931B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0142404A AT500773B8 (de) 2004-08-24 2004-08-24 Einspritzdüse für brennkraftmaschinen
PCT/AT2005/000330 WO2006021014A1 (fr) 2004-08-24 2005-08-18 Gicleur d'injection pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1781931A1 EP1781931A1 (fr) 2007-05-09
EP1781931B1 true EP1781931B1 (fr) 2009-12-16

Family

ID=35169814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05772740A Active EP1781931B1 (fr) 2004-08-24 2005-08-18 Gicleur d'injection pour moteurs a combustion interne

Country Status (8)

Country Link
US (1) US7383794B2 (fr)
EP (1) EP1781931B1 (fr)
JP (1) JP4795350B2 (fr)
KR (1) KR100850594B1 (fr)
CN (1) CN100510382C (fr)
AT (2) AT500773B8 (fr)
DE (1) DE502005008715D1 (fr)
WO (1) WO2006021014A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215943A1 (de) 2015-08-20 2017-02-23 Robert Bosch Gmbh Kraftstoffinjektor
WO2017182242A1 (fr) 2016-04-21 2017-10-26 Robert Bosch Gmbh Injecteur de carburant
DE102016211477A1 (de) 2016-06-27 2017-12-28 Robert Bosch Gmbh Düsenkörper für einen Kraftstoffinjektor
WO2018149555A1 (fr) 2017-02-20 2018-08-23 Robert Bosch Gmbh Injecteur de carburant

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101498263B (zh) * 2008-07-23 2013-09-18 福建省莆田市中涵机动力有限公司 直接控制喷油嘴开关的高压共轨喷油器
US7849836B2 (en) * 2008-10-07 2010-12-14 Caterpillar Inc Cooling feature for fuel injector and fuel system using same
DE102009018767A1 (de) * 2009-04-24 2010-10-28 Man Diesel & Turbo Se Kraftstoffeinspritzdüse für eine Brennkraftmaschine
US8517284B2 (en) 2009-05-13 2013-08-27 Caterpillar Inc. System and method for internal cooling of a fuel injector
JP2013504661A (ja) * 2009-09-11 2013-02-07 インビスタ テクノロジーズ エス エイ アール エル ポリエステル樹脂混合物を酸素捕捉用に改良する方法およびそれの製品
US8201754B2 (en) * 2009-12-03 2012-06-19 Caterpillar Inc. Fluid injector with thermal load control
US8434457B2 (en) * 2010-06-29 2013-05-07 Caterpillar Inc. System and method for cooling fuel injectors
US8480009B2 (en) 2010-07-30 2013-07-09 Caterpillar Inc. Large bore fuel system and fuel injector for same
EP2426344B1 (fr) 2010-09-07 2015-02-25 Caterpillar Motoren GmbH & Co. KG Système de chauffage pour moteur à combustion interne
US8549840B2 (en) * 2010-11-12 2013-10-08 Cummins Cal Pacific, Llc Fluid injector
AT512422B1 (de) * 2012-02-07 2016-01-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
CN102619659A (zh) * 2012-04-17 2012-08-01 哈尔滨工程大学 喷油器冷却衬套
KR101953922B1 (ko) * 2013-07-08 2019-03-05 현대중공업 주식회사 로커아암 윤활유를 이용한 노즐 냉각시스템
CN104763512A (zh) * 2015-02-05 2015-07-08 宁波市永硕精密机械有限公司 一种船用发动机喷油器冷却套
US9897053B2 (en) * 2015-08-12 2018-02-20 Cummins Inc. Fuel cooled injector tip
US10605213B2 (en) * 2015-08-21 2020-03-31 Cummins Inc. Nozzle combustion shield and sealing member with improved heat transfer capabilities
JP6741052B2 (ja) * 2017-09-29 2020-08-19 株式会社デンソー 燃料噴射弁
CN109869252A (zh) * 2019-03-15 2019-06-11 江苏大学 一种高压共轨柴油机的高频响应喷油器
CN110005558B (zh) * 2019-03-19 2022-06-07 上海齐耀动力技术有限公司 一种防积碳燃油喷射装置
CN111828216A (zh) * 2020-06-28 2020-10-27 上海中船三井造船柴油机有限公司 双燃料柴油机喷油器预燃室的冷却结构

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721753C (de) * 1940-08-04 1942-06-18 Bosch Gmbh Robert Gekuehlte, insbesondere fluessigkeitsgesteuerte Einspritzduese fuer Brennkraftmaschinen
US3737100A (en) * 1971-11-18 1973-06-05 Allis Chalmers Internally cooled unit injector
JPS535945Y2 (fr) * 1973-04-04 1978-02-15
US3945353A (en) * 1974-11-29 1976-03-23 Allis-Chalmers Corporation Two phase nozzle cooling system
JPS6014907B2 (ja) * 1979-06-04 1985-04-16 キヤタピラ− トラクタ− コンパニ− 単位噴射器
DE3141070C3 (de) * 1981-10-16 1997-03-13 Motoren Werke Mannheim Ag Kühlung einer Kraftstoffeinspritzdüse für eine Brennkraftmaschine
US5400968A (en) * 1993-08-16 1995-03-28 Solar Turbines Incorporated Injector tip cooling using fuel as the coolant
JP3228497B2 (ja) * 1996-03-27 2001-11-12 株式会社豊田中央研究所 燃料噴射弁のデポジット低減法およびデポジット低減式燃料噴射弁
US5740782A (en) * 1996-05-20 1998-04-21 Lowi, Jr.; Alvin Positive-displacement-metering, electro-hydraulic fuel injection system
JP3719468B2 (ja) * 1996-09-02 2005-11-24 株式会社デンソー 蓄圧式燃料噴射装置
EP0961025A1 (fr) * 1998-05-29 1999-12-01 Wärtsilä NSD Schweiz AG Buse d'injection de combustible
DE19909451A1 (de) 1999-03-04 2000-09-14 Bosch Gmbh Robert Injektor mit einem Piezo-Mehrlagenaktor
JP4026448B2 (ja) * 2002-08-28 2007-12-26 トヨタ自動車株式会社 インジェクタ
CA2405350C (fr) * 2002-09-26 2004-08-10 S. Michael Baker Soupape d'injection refroidie par liquide, et methode de fonctionnement de ladite soupape

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215943A1 (de) 2015-08-20 2017-02-23 Robert Bosch Gmbh Kraftstoffinjektor
WO2017029076A1 (fr) 2015-08-20 2017-02-23 Robert Bosch Gmbh Injecteur de carburant
WO2017182242A1 (fr) 2016-04-21 2017-10-26 Robert Bosch Gmbh Injecteur de carburant
DE102016206796A1 (de) 2016-04-21 2017-10-26 Robert Bosch Gmbh Kraftstoffinjektor
KR20180132905A (ko) * 2016-04-21 2018-12-12 로베르트 보쉬 게엠베하 연료 분사기
KR102211974B1 (ko) 2016-04-21 2021-02-08 로베르트 보쉬 게엠베하 연료 분사기
DE102016211477A1 (de) 2016-06-27 2017-12-28 Robert Bosch Gmbh Düsenkörper für einen Kraftstoffinjektor
WO2018001797A1 (fr) 2016-06-27 2018-01-04 Robert Bosch Gmbh Corps d'injecteur pour un injecteur de carburant
WO2018149555A1 (fr) 2017-02-20 2018-08-23 Robert Bosch Gmbh Injecteur de carburant

Also Published As

Publication number Publication date
KR20070046904A (ko) 2007-05-03
DE502005008715D1 (de) 2010-01-28
US20080017169A1 (en) 2008-01-24
US7383794B2 (en) 2008-06-10
AT500773B8 (de) 2007-02-15
KR100850594B1 (ko) 2008-08-05
AT500773B1 (de) 2006-07-15
EP1781931A1 (fr) 2007-05-09
JP2008510914A (ja) 2008-04-10
JP4795350B2 (ja) 2011-10-19
CN101006268A (zh) 2007-07-25
AT500773A1 (de) 2006-03-15
CN100510382C (zh) 2009-07-08
ATE452287T1 (de) 2010-01-15
WO2006021014A1 (fr) 2006-03-02

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