EP0900932B1 - Kraftstoffeinspritzanlage für eine Brennkraftmaschine - Google Patents
Kraftstoffeinspritzanlage für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP0900932B1 EP0900932B1 EP98110449A EP98110449A EP0900932B1 EP 0900932 B1 EP0900932 B1 EP 0900932B1 EP 98110449 A EP98110449 A EP 98110449A EP 98110449 A EP98110449 A EP 98110449A EP 0900932 B1 EP0900932 B1 EP 0900932B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- additional liquid
- pressure
- fuel injection
- valve
- 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.)
- Expired - Lifetime
Links
Images
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
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
-
- 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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- 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
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0047—Four-way valves or valves with more than four ways
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0049—Combined valve units, e.g. for controlling pumping chamber and injection valve
Definitions
- the invention relates to a fuel injection system for Internal combustion engines according to the preamble of claim 1 out.
- a high-pressure feed pump fills the fuel injection system a high pressure accumulator with fuel from a storage tank. Pressure lines run from the high-pressure accumulator (common rail) to the individual injection nozzles of the internal combustion engine.
- Fuel diesel fuel
- An additional liquid the nitrogen oxide and soot emissions of the internal combustion engine lowered. This type of injection also affects a reduction in fuel consumption. Water is generally used as the additional liquid.
- the internal combustion engine must have a dynamic water content can be quickly reduced or switched off. Otherwise increased the HC emission.
- the high injection pressure is in the injector is permanently present. Therefore, in the known Fuel injection system provided for relief the storage of additional liquid in the pressure chamber Relieve pressure within the pressure chamber for a short time. This is done by a 3/2-way valve, so that fuel from the Pressure chamber pushed out by the penetrating additional liquid can be.
- the 3/2-way valve opens during the injection break the passage to a drain line for the Pressure reduction and return of the fuel from the injection nozzle in a storage container.
- the inflow closed by the commom rail pressure accumulator Parallel to this Valve control is provided by another check valve an opening for the feed of additional liquid (water) Approved.
- the additional liquid is in the area of the nozzle tip fed to the injector.
- the check valve is held in an open position until the desired one Amount of additional liquid upstream in the pressure chamber is.
- the admixture of fuel and additional liquid in the Print room requires precise and fast control of the Valve assembly. For example, depending on the operating state the internal combustion engine the amount of fuel or additional liquid can be varied from work cycle to work cycle can.
- the Changeover valve for fuel storage is a 3/2-way valve trained while additionally a separate check valve for the storage of additional liquid in the Pressure room becomes necessary.
- This fuel injection system has only one Switch valve to switch between the liquid lines for fuel and additional liquid or for pressure relief of the pressure chamber to be able to switch.
- a single valve as a control valve can be rapid changes in the storage of fuel or additional liquid lead into the pressure room. Through the control a single valve can be the valve assembly be switched more precisely and faster.
- a multi-way solenoid valve can be used.
- a multi-way valve either the two pressure relief openings Pressure chamber or the opening to the common rail high-pressure accumulator be released.
- the exemplary embodiment of a fuel injection system with an injector 10 according to FIG. 1 is in a state in which additional liquid is stored in a pressure chamber 11 of a two-component injection nozzle 12.
- a changeover valve 16 with a Valve housings 17 Due to the position of a changeover valve 16 with a Valve housings 17 are the pressure chamber 11 and a feed line 18 for fuel of the two-component injector 12 largely depressurized.
- the feed line 18 is via a return line 19 connected to a fuel tank.
- a decoupling throttle 20 is installed.
- the changeover valve 16 has a first valve opening 21 and a second valve opening 22.
- the first valve opening 21 connects the feed line 18 to the fuel tank.
- the second valve opening 22 allows additional liquid from an auxiliary liquid container 23 with the help a feed pump 24 in the pressure chamber 11 of the two-substance injector 12 to be stored.
- a connecting line 25 is switched continuously with an additional liquid line 26.
- a fuel supply line 27, however, is from the fuel line 28 separated.
- the fuel line 28 can fuel from a common rail pressure accumulator 29 forward.
- Pressure regulator 30 and filter 31 ensure one controlled and defined supply of additional liquid from the additional liquid container 23.
- the fuel injection system with an injector 10 is in a state in which fuel and stored additional liquid are injected from the two-substance injection nozzle 12 from the pressure chamber 11 into a combustion chamber of the internal combustion engine 32.
- the internal combustion engine 32 is again only in FIG indicated and shown with their edge area.
- the position of the changeover valve 16 gives the first Valve opening 21 gives access to the common rail pressure accumulator 29 free.
- the return line 19 is through the valve position of the changeover valve 16 separated from the supply line 18.
- the additional liquid line 25 also has none Passage to makeup liquid line 26. Hence, no additional liquid from the additional liquid container 23 get into the pressure chamber 11.
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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
- Fig. 1
- ein Ausführungsbeispiel in einer schematischen Darstellung, beim dem über das erfindungsgemäße Umschaltventil Zusatzflüssigkeit in den Druckraum der Einspritzdüse eingelagert wird und
- Fig. 2
- den Zustand des Ausführungsbeispiel nach Fig. 1, bei dem die Zuführleitung für Zusatzflüssigkeit geschlossen ist und Kraftstoff in den Druckraum eingeleitet wird.
Claims (3)
- Kraftstoffeinspritzanlage für eine Brennkraftmaschine mit einer Zweistoffeinspritzdüse (12), in deren Druckraum (11) abwechselnd Kraftstoff und eine Zusatzflüssigkeit förderbar sind, und mit einer Ventilanordnung, durch die die hochdruckseitige Kraftstoffzufuhr zur Zweistoffeinspritzdüse (12) und die Verbindung des Druckraums (11) mit einer Niederdruckseite und mit einer Zuführleitung (26) der Zusatzflüssigkeit steuerbar ist,
dadurch gekennzeichnet, daß die Kraftstoffeinspritzanlage lediglich ein einziges Umschaltventil (16) besitzt, das sowohl zur Ansteuerung der Beaufschlagung des Druckraums (11) mit Hoch- oder Niederdruck und als auch zur Ansteuerung der Befüllung des Druckraums (11) mit der Zusatzflüssigkeit ausgebildet ist. - Kraftstoffeinspritzanlage nach Anspruch 1, dadurch gekennzeichnet, daß das Umschaltventil (16) ein Mehrwege-Magnetventil ist.
- Kraftstoffeinspritzanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Umschaltventil (16) in der Kraftstoffhochdruckverbindung zwischen einem Common-Rail-Druckspeicher (29) und dem Druckraum (11) eingebaut ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19738397A DE19738397A1 (de) | 1997-09-03 | 1997-09-03 | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
DE19738397 | 1997-09-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0900932A1 EP0900932A1 (de) | 1999-03-10 |
EP0900932B1 true EP0900932B1 (de) | 2002-09-11 |
Family
ID=7841004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110449A Expired - Lifetime EP0900932B1 (de) | 1997-09-03 | 1998-06-08 | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US5979410A (de) |
EP (1) | EP0900932B1 (de) |
JP (1) | JPH11148436A (de) |
DE (2) | DE19738397A1 (de) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19742073A1 (de) * | 1997-09-24 | 1999-03-25 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19742320A1 (de) * | 1997-09-25 | 1999-04-01 | Bosch Gmbh Robert | Kraftstoffeinspritzventil |
DE19746490A1 (de) * | 1997-10-22 | 1999-04-29 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
DE19746492A1 (de) * | 1997-10-22 | 1999-04-29 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
DE19746489A1 (de) * | 1997-10-22 | 1999-04-29 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
DE19816316A1 (de) * | 1998-04-11 | 1999-10-14 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19939422A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
DE19939426A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
DE60014813T2 (de) * | 1999-08-31 | 2006-03-09 | Denso Corp., Kariya | Kraftstoffeinspritzvorrichtung |
DE19954057A1 (de) * | 1999-11-10 | 2001-06-07 | Bosch Gmbh Robert | Steuerelement für die Steuerung von Einspritzsystemen |
DE10015268A1 (de) * | 2000-03-28 | 2001-10-04 | Siemens Ag | Einspritzventil mit Bypaßdrossel |
JP2002030937A (ja) * | 2000-04-28 | 2002-01-31 | Gureitochiren:Kk | エンジン及びシステム |
DE10105031A1 (de) * | 2001-02-05 | 2002-08-14 | Bosch Gmbh Robert | Vorrichtung zur Dämpfung von Druckpulsationen in Hochdruckeinspritzsystemen |
DE10113028A1 (de) * | 2001-03-17 | 2002-09-26 | Bosch Gmbh Robert | 3/2-Wegeventil |
ITTO20010539A1 (it) * | 2001-06-05 | 2002-12-05 | Fiat Ricerche | Iniettore di combustibile per un motore a combustione interna. |
DE10131640A1 (de) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Kraftstoffinjektor mit Einspritzverlaufsformung durch schaltbare Drosselelemente |
DE10131953A1 (de) * | 2001-07-02 | 2003-01-23 | Siemens Ag | Steuermodul für einen Injektor eines Speichereinspritzsystems |
DE10141111B4 (de) * | 2001-08-22 | 2005-10-13 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
US6439202B1 (en) * | 2001-11-08 | 2002-08-27 | Cummins Inc. | Hybrid electronically controlled unit injector fuel system |
JP2009167853A (ja) * | 2008-01-15 | 2009-07-30 | Denso Corp | 内燃機関の制御装置 |
CA2635410C (en) * | 2008-06-19 | 2010-08-17 | Westport Power Inc. | Dual fuel connector |
CA2633846C (en) * | 2008-06-27 | 2009-12-29 | Westport Power Inc. | Fuel injection valve and method for co-injecting a liquid and a gaseous fuel into the combustion chamber of an internal combustion engine |
US10077748B2 (en) * | 2014-12-23 | 2018-09-18 | Cummins Inc. | Fuel injector for common rail |
CN104806408B (zh) * | 2015-04-30 | 2017-05-24 | 哈尔滨工程大学 | 多模式常闭电控单体泵 |
CN104806405B (zh) * | 2015-04-30 | 2017-04-12 | 哈尔滨工程大学 | 双作用常闭电控单体泵 |
CN104806404B (zh) * | 2015-04-30 | 2017-12-12 | 哈尔滨工程大学 | 双作用压电式常闭电控单体泵 |
CN104806407B (zh) * | 2015-04-30 | 2017-04-12 | 哈尔滨工程大学 | 多模式电控单体泵 |
RU174438U1 (ru) * | 2016-10-18 | 2017-10-12 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Рязанское высшее воздушно-десантное ордена Суворова дважды Краснознаменное командное училище имени генерала армии В.Ф. Маргелова" Министерства обороны Российской Федерации | Система топливоподачи дизеля |
EP3483420B1 (de) * | 2017-11-13 | 2020-06-17 | Winterthur Gas & Diesel AG | Brennstoffeinspritzdüse und brennstoffeinspritzverfahren für einen grossdieselmotor, sowie grossdieselmotor |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2984229A (en) * | 1956-12-05 | 1961-05-16 | Alco Products Inc | Multi-fuel supply system |
US3807377A (en) * | 1971-06-14 | 1974-04-30 | Ethyl Corp | Fuel system |
US3908794A (en) * | 1973-11-16 | 1975-09-30 | Richard L Stone | Detachable boat boarding device |
US4505244A (en) * | 1982-05-06 | 1985-03-19 | Cummins Engine Company, Inc. | Fuel injection system |
GB2126650B (en) * | 1982-08-31 | 1988-02-10 | George Stan Baranescu | I c engine injection system providing a stratified charge of two fuels |
BR8801648A (pt) * | 1988-04-07 | 1989-11-07 | Bosch Do Brasil | Sistema de partida a frio para motores de combustao interna a alcool,processo de partida a frio e dispositivo a ser utilizado nos mesmos |
US5194247A (en) * | 1989-08-24 | 1993-03-16 | Xina Nair | Synergistic skin depigmentation composition |
DE4230641A1 (de) * | 1992-09-12 | 1994-03-17 | Bosch Gmbh Robert | Kraftstoff-Einspritzdüse mit Additiveinspritzung für Dieselmotoren |
DE4337048C2 (de) * | 1993-10-29 | 1996-01-11 | Daimler Benz Ag | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
DE4341739C1 (de) * | 1993-12-08 | 1995-03-30 | Mtu Friedrichshafen Gmbh | Einspritzsystem |
DE4445980C2 (de) * | 1994-12-22 | 1999-12-30 | Mtu Friedrichshafen Gmbh | Einspritzsystem |
FI101168B (fi) * | 1994-12-23 | 1998-04-30 | Waertsilae Nsd Oy Ab | Ruiskutusjärjestely ja menetelmä sen käyttämiseksi polttomoottorissa |
DE19535703C2 (de) * | 1995-09-26 | 1997-07-31 | Mtu Friedrichshafen Gmbh | Brennstoffeinspritzsystem |
FI101739B1 (fi) * | 1996-08-16 | 1998-08-14 | Waertsila Nsd Oy Ab | Ruiskutusventtiilijärjestely |
-
1997
- 1997-09-03 DE DE19738397A patent/DE19738397A1/de not_active Withdrawn
-
1998
- 1998-06-08 EP EP98110449A patent/EP0900932B1/de not_active Expired - Lifetime
- 1998-06-08 DE DE59805489T patent/DE59805489D1/de not_active Expired - Fee Related
- 1998-08-21 US US09/137,817 patent/US5979410A/en not_active Expired - Fee Related
- 1998-09-01 JP JP10247074A patent/JPH11148436A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH11148436A (ja) | 1999-06-02 |
US5979410A (en) | 1999-11-09 |
DE59805489D1 (de) | 2002-10-17 |
DE19738397A1 (de) | 1999-03-18 |
EP0900932A1 (de) | 1999-03-10 |
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