CN102770658A - 具有用于电动预输送泵的量差控制的燃料喷射装置 - Google Patents

具有用于电动预输送泵的量差控制的燃料喷射装置 Download PDF

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CN102770658A
CN102770658A CN2010800545501A CN201080054550A CN102770658A CN 102770658 A CN102770658 A CN 102770658A CN 2010800545501 A CN2010800545501 A CN 2010800545501A CN 201080054550 A CN201080054550 A CN 201080054550A CN 102770658 A CN102770658 A CN 102770658A
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pressure
fuel
fuel injection
pump
injection system
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CN102770658B (zh
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F·伯金
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Robert Bosch GmbH
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    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/041—Arrangements for driving gear-type pumps

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

Abstract

在内燃机的具有燃料预输送泵(13)的燃料喷射装置(10)中，所述燃料预输送泵将燃料从燃料箱(11)经压力侧的输送管线(18)输送到高压燃料泵(12)，本发明提出，所述预输送泵(13)包括独立于所述高压泵(12)的驱动器(13a)，尤其是电动的驱动器，所述压力侧的输送管线(18)经电力致动的量差阀(21)连接在返回管线(17)上，所述电力致动的量差阀具有可调整的阀截面。

Description

具有用于电动预输送泵的量差控制的燃料喷射装置
技术领域
本发明基于权利要求1所述类型的燃料喷射装置。
背景技术
具有在预输送泵和高压泵之间布置的燃料过滤器的燃料喷射系统是已知的。所述预输送泵构造为外齿轮泵且由所述高压泵的驱动轴驱动，其中，所述高压泵供应的燃料量由一个单独的测量单元调节。在所述预输送泵和过滤器之间设置安全阀和排气阀，所述安全阀阻止所述管线或过滤器破裂，所述排气阀用于将气体从所述输送管线排出。
发明内容
根据本发明，所述输送量由量差阀控制，所述量差阀同时承担安全功能和排气功能。所述量差阀例如布置在压力侧燃料过滤器前面。所述已知的利用测量单元的量调节能够根据本发明转变为利用例如调节量的电动输送泵(例如齿轮泵)。根据本发明的解决方案的优点是如同被调节的电动燃料泵的相同质量，但是省去了安全阀和排气阀，这主要因为所述量差阀具有与测量单元相同的消耗。
本发明主题的其它优点和有利的设计方案能够从所述说明、附图和权利要求中得知。
附图说明
下面将根据附图中完全示意性的反馈式实施例详细地阐明本发明。
唯一的视图显示根据本发明的燃料喷射装置的实施例。
具体实施方式
图中所示的内燃机的燃料喷射装置10包括燃料箱11、燃料高压泵12和燃料预输送泵(例如齿轮泵)13，燃料预输送泵13具有被调节的电动驱动器13a，燃料从燃料箱11输送到高压泵12。高压泵12在高压下将燃料输送到高压存储器(共轨)14中，高压存储器14又连接到燃料喷射阀(喷射器)15，燃料喷射阀15将燃料喷射到内燃机的燃烧室中。高压存储器14中的压力由压力调节阀16调节，压力调节阀16连接到向后传输到燃料箱11中的燃料回流管线17。
预输送泵13由统治其压力侧输送管线18的燃料压力(输送压力)或者由被输送的燃料量(输送量)调节。燃料过滤器19布置在这个从预输送泵13传输到高压泵12的压力侧输送管线18中。压力调节或量调节的预输送泵13调节被输送的燃料总量A，燃料总量A受到过滤器19的推压。冲洗管线20在过滤器19和高压泵12之间从压力侧输送管线18分出，被过滤的燃料量通过冲洗管线20分配成输送量B和冲洗量C。输送量B从高压泵12在高压下输送到高压存储器14中，同时冲洗量C用于冲洗高压泵12并且经燃料回流管线17返回到燃料箱11中。
通过过滤器19的精确总量A由具有可调整的阀截面的量差阀21控制，在输送泵13和过滤器19之间的压力侧输送管线18通过量差阀21连接在回流管线17上。量差阀21例如由油门踏板22电动地控制，并且在所示的实施例中构造为具有电磁致动器23的电磁阀，所述电磁阀操纵量差阀21的阀闭合元件(球)24并且因此调整所述阀截面。油门踏板22压下得越远，量差阀21打开得越小，并且经量差阀21回流到燃料箱11中的燃料量因此越小。在油门踏板22完全压下时，量差阀21闭合并且输送到过滤器19的总量A因此最大。
阀闭合元件24由闭合弹簧25在闭合方向上预先张紧并且不依赖于电磁致动器23而自动打开，如果统治压力侧输送管线18的压力足够大，阀闭合元件24克服闭合弹簧25的作用进行控制。量差阀21因此在压力侧输送管线18中超压时打开，并且因而承担超压阀的安全功能，超压是例如由于过滤器19堵塞引起的。量差阀21能够电动打开以进行排气，并且因而承担在这里未详细显示的排气装置的排气功能。单独的安全阀和排气阀是不需要的。

Claims (7)

1.一种内燃机的燃料喷射装置(10)，其具有燃料预输送泵(13)，所述燃料从燃料箱(11)经压力侧输送管线(18)输送到燃料高压泵(12)，其特征在于，
所述预输送泵(13)具有独立于所述高压泵(12)的驱动器，所述驱动器尤其是电动驱动器(13a)，并且所述压力侧输送管线(18)经具有可调整阀截面的电动控制的量差阀(21)连接在回流管线(17)上。
2.根据权利要求1所述的燃料喷射装置，其特征在于，
燃料过滤器(19)布置在所述压力侧输送管线(18)中，并且在所述输送泵(13)和过滤器(19)之间的压力侧输送管线(18)经所述量差阀(21)连接在所述回流管线(17)上。
3.根据权利要求1或2所述的燃料喷射装置，其特征在于，
所述预输送泵(13)经统治其压力侧管线(18)的燃料压力进行压力调节或经输送的燃料量进行量调节。
4.根据前述权利要求中的任意一项所述的燃料喷射装置，其特征在于，
所述量差阀(21)由油门踏板(22)控制。
5.根据前述权利要求中的任意一项所述的燃料喷射装置，其特征在于，
所述量差阀(21)的阀闭合元件(24)在它的闭合的阀位置中通过闭合弹簧(25)预先张紧，并且通过统治所述输送管线(18)的超压可控制。
6.根据前述权利要求中的任意一项所述的燃料喷射装置，其特征在于，
所述量差阀(21)构造为具有电动控制的电磁致动器(23)的电磁阀。
7.根据前述权利要求中的任意一项所述的燃料喷射装置，其特征在于，
高压存储器(14)在高压侧连接在所述高压泵(12)上，所述高压存储器(14)的压力经压力调节阀(16)调节，所述压力调节阀(16)连接在所述回流管线(17)上。
CN201080054550.1A 2009-12-02 2010-10-04 具有用于电动预输送泵的量差控制的燃料喷射装置 Expired - Fee Related CN102770658B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200910047376 DE102009047376A1 (de) 2009-12-02 2009-12-02 Kraftstoffeinspritzvorrichtung mit Differenzmengenregelung bei elektrischer Vorförderpumpe
DE102009047376.9 2009-12-02
PCT/EP2010/064710 WO2011067008A1 (de) 2009-12-02 2010-10-04 Kraftstoffeinspritzvorrichtung mit differenzmengenregelung bei elektrischer vorförderpumpe

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EP (1) EP2507503B1 (zh)
CN (1) CN102770658B (zh)
DE (1) DE102009047376A1 (zh)
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WO (1) WO2011067008A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010043374A1 (de) * 2010-11-04 2012-05-10 Robert Bosch Gmbh Kraftstoffeinspritzsystem einer Brennkraftmaschine, sowie Verfahren zur Steuerung des selbigen
DE102013218697A1 (de) * 2013-09-18 2015-03-19 Robert Bosch Gmbh Fördersystem für ein Fluid
DE102015016656A1 (de) 2015-12-19 2017-06-22 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren zur Herstellung eines beschichteten, durch Warmumformung gehärteten Körpers sowie ein nach dem Verfahren hergestellter Körper
IT201700052993A1 (it) * 2017-05-16 2018-11-16 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
CN113074068A (zh) * 2021-04-02 2021-07-06 浙江吉利控股集团有限公司 一种用于车辆的燃料供给系统及其控制方法和车辆

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EP0270720A1 (fr) * 1986-12-12 1988-06-15 Regie Nationale Des Usines Renault Pompe à débit variable
WO1990012207A1 (de) * 1989-04-08 1990-10-18 Robert Bosch Gmbh Steuereinrichtung zum stillsetzen einer brennkraftmaschine
DE19549108A1 (de) * 1995-12-29 1997-07-03 Bosch Gmbh Robert System zur Kraftstoffhochdruckerzeugung für ein in Brennkraftmaschinen eingesetztes Kraftstoffeinspritzsystem
WO1999043941A2 (en) * 1998-02-27 1999-09-02 Stanadyne Automotive Corp. Diesel pump fuel inlet metering using proportional control valve
DE10318941A1 (de) * 2003-04-26 2004-11-11 Robert Bosch Gmbh Kraftstoffsystem für eine Brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270720A1 (fr) * 1986-12-12 1988-06-15 Regie Nationale Des Usines Renault Pompe à débit variable
WO1990012207A1 (de) * 1989-04-08 1990-10-18 Robert Bosch Gmbh Steuereinrichtung zum stillsetzen einer brennkraftmaschine
DE19549108A1 (de) * 1995-12-29 1997-07-03 Bosch Gmbh Robert System zur Kraftstoffhochdruckerzeugung für ein in Brennkraftmaschinen eingesetztes Kraftstoffeinspritzsystem
WO1999043941A2 (en) * 1998-02-27 1999-09-02 Stanadyne Automotive Corp. Diesel pump fuel inlet metering using proportional control valve
DE10318941A1 (de) * 2003-04-26 2004-11-11 Robert Bosch Gmbh Kraftstoffsystem für eine Brennkraftmaschine

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CN102770658B (zh) 2015-01-28
DE102009047376A1 (de) 2011-06-09
WO2011067008A1 (de) 2011-06-09
IN2012DN02867A (zh) 2015-07-24
EP2507503B1 (de) 2015-07-01

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