EP2526283A1 - Verfahren zum temperieren eines injektors einer einspritzung für das einspritzen von kraftstoff in den brennraum einer brennkraftmaschine - Google Patents
Verfahren zum temperieren eines injektors einer einspritzung für das einspritzen von kraftstoff in den brennraum einer brennkraftmaschineInfo
- Publication number
- EP2526283A1 EP2526283A1 EP11702387A EP11702387A EP2526283A1 EP 2526283 A1 EP2526283 A1 EP 2526283A1 EP 11702387 A EP11702387 A EP 11702387A EP 11702387 A EP11702387 A EP 11702387A EP 2526283 A1 EP2526283 A1 EP 2526283A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- fuel
- injector
- pump
- flushing
- 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
Links
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
-
- 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/02—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means with fuel-heating means, e.g. for vaporising
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
-
- 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
-
- 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
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
-
- 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
- Injectors of the type described in the introduction are frequently used in common-rail injection systems. 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.
- an injector for a common-rail injection system has different parts, which are usually held together by a nozzle clamping 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.
- To this control room can an inlet channel via a T2011 / 000031
- the pressure in the control chamber can be controlled by a control valve, which is usually actuated by an electromagnet. With appropriate wiring, an opening of the solenoid valve can cause a flow of fuel through a throttle, so that a decrease in the hydraulic holding force leads to the immersed into the control chamber end face of the nozzle needle for opening the nozzle needle. In this way, the fuel can pass through the injection openings in the combustion chamber of the engine in the sequence.
- an inlet throttle is usually also provided, wherein the opening speed of the nozzle needle is determined by the flow difference between the inlet and outlet throttle.
- a subset of the fuel is therefore taken between the prefeed pump and the high-pressure pump of the injection system, passed through a heat exchanger and fed as flushing through a separate channel in the injector to the control valve, so that the purge flows through the armature chamber of the control valve and thus keeps at a certain elevated temperature.
- the injectors which are to be used in accordance with WO 2009/023887, operate on the common rail principle, in which in a common high-pressure fuel storage, the common rail, fuel is kept under high pressure, the injectors via high pressure lines with the Common rail are connected and it comes after actuation of the control valve in the respective injector to a lifting of the nozzle needle from the valve seat and thus to an injection into the combustion chamber, wherein the corresponding injection quantity is provided from the common rail.
- Diameter is significantly increased compared to the high pressure lines, so that from the high pressure fuel storage a certain amount of injection can be delivered without causing an immediate pressure drop, as would be the case if the injection amount would be taken from a common high pressure line.
- the injection quantity falls in such pressure-controlled injectors nor to a control amount, which is discharged through the open control valve, which controls the pressure in the control chamber at the end remote from the injectors end of the control needle in the low pressure region.
- the high-pressure pumps rest, and the pressure in the system falls below the prefeed pressure of the prefeed pump, so that the pressure of the prefeed pump is sufficient to pump fuel into the high-pressure fuel storage.
- the fuel provided for this purpose is inventively taken between the prefeed pump and the high-pressure pump, heated in a heat exchanger and fed directly to the high-pressure fuel storage.
- the high pressure fuel storage represents a relatively large volume inside the injector, so that the entire injector is heated sufficiently when the high pressure fuel storage is maintained at an appropriate temperature.
- the procedure is preferably such that the flushing quantity is discharged from the injector via connections for high-pressure fuel lines of the injection.
- the high-pressure fuel lines which, as already mentioned, are not under high pressure when the internal combustion engine is at rest, are optionally connected to the low-pressure region of the injection system in internal combustion engines with a modular design, with the interposition of a manifold, so that the flushing quantities can be removed via these lines.
- the procedure is preferably such that the flushing quantity is returned to the tank or to the prefeed pump, so that here too a corresponding temperature level can be maintained in order to prevent clogging of lines in this area.
- the method according to the invention therefore further developed such that the supply line for the flushing quantity to the high-pressure fuel storage is closed by a check valve during operation of the internal combustion engine.
- the device for injecting fuel into the combustion chamber of an internal combustion engine for carrying out the method according to the invention comprises at least one prefeed pump for conveying fuel from a tank, at least one high-pressure pump and at least one injector, wherein the fuel delivered by the prefeed pump of the high-pressure pump and the high-pressure pump delivered high-pressure fuel is supplied to the injector, inside the injector, a high-pressure fuel storage is arranged and the injector has an injection nozzle with an axially displaceable nozzle nozzle in a front nozzle needle, which dips into a high-pressure fuel feedable control chamber whose pressure on at least one or Drain channel for fuel opening or closing control valve is controlled.
- the branch line passes through a heat exchanger and flows into the high-pressure fuel storage of the injector, so that it is flowed through by the flushing.
- the device according to the present invention is preferably further developed such that low-pressure lines are arranged for the return of the flushing amount to the prefeed pump.
- Control valve for controlling the flushing amount is arranged in the branch line.
- the injector is made particularly large, it may be advantageous not only to temper the high-pressure accumulator with a flushing quantity, but also to heat the low-pressure side of the injector.
- the device according to the invention can be further developed in such a way that a connection directly connected to the control valve of the injector for a further flushing quantity is arranged on the injector.
- the device according to the invention can be developed with advantage in that in the branch line for the flushing amount, a check valve is arranged, which is opposite Supply direction for the flushing closes.
- a check valve is arranged, which is opposite Supply direction for the flushing closes.
- a schematically illustrated non-return valve 13 is arranged in the region of the mouth of the branch lines 11 in the high-pressure accumulator of the injectors, which closes in the direction of the arrow 16, to prevent a backflow of high-pressure fuel through the branch line 11.
- a similar valve may also be arranged in the T-piece 8.
- the actual injector nozzle contains, as can be seen in Fig.
- a nozzle needle 16 which is guided axially displaceably in the nozzle body 15 of the injector 9 and a plurality of free surfaces 17, through which 18 can flow fuel to the needle tip from the nozzle antechamber.
- the nozzle needle 16 itself carries a collar 19, on which a compression spring 20 is supported, and immersed in a control chamber 21, which can be acted upon with fuel under pressure.
- a control chamber 21 To this control chamber 2 1, an inlet channel 22 via an inlet throttle 23 and a drain channel 24 via an outlet throttle 25 are connected, wherein the respective pressure built up in the control chamber 21 together with the force of the compression spring 20 holds the nozzle needle 16 in the closed position.
- the pressure in the control chamber 21 is controlled by a control or solenoid valve 26 which is actuated by an electromagnet 27.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0006410A AT509405A1 (de) | 2010-01-19 | 2010-01-19 | Verfahren zum temperieren eines injektors einer einspritzung für das einspritzen von kraftstoff in den brennraum einer brennkraftmaschine |
PCT/AT2011/000031 WO2011088490A1 (de) | 2010-01-19 | 2011-01-18 | Verfahren zum temperieren eines injektors einer einspritzung für das einspritzen von kraftstoff in den brennraum einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2526283A1 true EP2526283A1 (de) | 2012-11-28 |
EP2526283B1 EP2526283B1 (de) | 2015-03-18 |
Family
ID=43754905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11702387.9A Active EP2526283B1 (de) | 2010-01-19 | 2011-01-18 | Verfahren zum temperieren eines injektors einer einspritzung für das einspritzen von kraftstoff in den brennraum einer brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US8635992B2 (de) |
EP (1) | EP2526283B1 (de) |
JP (1) | JP5674807B2 (de) |
KR (1) | KR101398580B1 (de) |
CN (1) | CN102713235B (de) |
AT (1) | AT509405A1 (de) |
WO (1) | WO2011088490A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010031486A1 (de) * | 2010-07-16 | 2012-01-19 | Robert Bosch Gmbh | Prüfstand für Fluidpumpen und Fluidinjektoren |
AT512437B1 (de) * | 2012-01-26 | 2014-03-15 | Bosch Gmbh Robert | Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine |
DE102012101293B4 (de) | 2012-02-17 | 2017-12-07 | L'orange Gmbh | Kraftstoff-Einspritzvorrichtung für Schwerölmotoren |
DE102013002758B4 (de) * | 2013-02-19 | 2020-03-19 | Woodward L'orange Gmbh | Spülverfahren zur Durchführung mit einem Kraftstoffinjektor |
DE102013212249A1 (de) * | 2013-06-26 | 2014-12-31 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE102013013234A1 (de) * | 2013-08-08 | 2015-02-12 | Man Diesel & Turbo Se | Injektor für eine Kraftstoffversorgungsanlage einer Brennkraftmaschine sowie Kraftstoffversorgungsanlage |
DE102013014152B4 (de) * | 2013-08-23 | 2021-03-18 | Woodward L'orange Gmbh | Spül-Start-Verfahren für einen Verbrennungsmotor und Spül-Start-System |
AT516251B1 (de) * | 2015-01-07 | 2016-04-15 | Hoerbiger Kompressortech Hold | Brenngaszuführungs- und Zündvorrichtung für einen Gasmotor |
AT516250B1 (de) * | 2015-01-07 | 2016-04-15 | Hoerbiger Kompressortech Hold | Brenngaszuführungs- und Zündvorrichtung für einen Gasmotor |
DE102017208400A1 (de) | 2017-05-18 | 2018-11-22 | Robert Bosch Gmbh | Vorrichtung und Verfahren zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine |
DE102017129223A1 (de) | 2017-12-08 | 2019-06-13 | Keyou GmbH | Modularer Injektor |
US11674487B2 (en) | 2021-06-15 | 2023-06-13 | Caterpillar Inc. | Check valve for a fuel injector |
Family Cites Families (23)
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US3067581A (en) * | 1943-11-04 | 1962-12-11 | Reggio Ferdinando Carlo | Fuel supply system |
US2747555A (en) * | 1951-04-03 | 1956-05-29 | Sulzer Ag | Fuel supply system for internal combustion engines |
US4377149A (en) * | 1980-10-14 | 1983-03-22 | Deere & Company | Fuel temperature control system |
US4372278A (en) * | 1980-10-20 | 1983-02-08 | Smith Rodney D | High temperature and high pressure fuel injection apparatus for internal combustion engines |
DE3107141A1 (de) * | 1981-02-26 | 1982-09-09 | Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen | Anordnung zum kuehlen des kraftstoffs in einem betriebssystem eines dieselmotors mit einem geschlossenen einspritzkreislauf |
DE3119050A1 (de) * | 1981-05-05 | 1982-11-18 | Gebrüder Sulzer AG, 8401 Winterthur | "brennstoffeinspritzvorrichtung mit elektromagnetisch betaetigtem umschaltventil" |
US4440138A (en) * | 1982-02-16 | 1984-04-03 | Stanadyne, Inc. | Diesel engine fuel system |
GB2123086A (en) * | 1982-07-08 | 1984-01-25 | Lucas Ind Plc | Fuel supply system for internal combustion engines |
GB8406270D0 (en) * | 1984-03-09 | 1984-04-11 | Lucas Ind Plc | Fuel system |
DE3631579C1 (de) * | 1986-09-17 | 1992-02-20 | Daimler Benz Ag | Niederdruckkraftstoffkreislauf mit Kraftstoffvorwaermung fuer eine luftverdichtende Einspritzbrennkraftmaschine,insbesondere fuer Nutzfahrzeuge |
JP3615260B2 (ja) * | 1995-03-07 | 2005-02-02 | 川崎重工業株式会社 | ディーゼル機関の燃料供給装置 |
US5794598A (en) * | 1996-06-21 | 1998-08-18 | Stanadyne Automotive Corp. | Fuel circuit and circulation method for fuel injection system |
AU6769598A (en) | 1997-03-31 | 1998-10-22 | Allied-Signal Inc. | Turbocharger integral fluid temperature management system |
JP2000130284A (ja) * | 1998-10-28 | 2000-05-09 | Nissan Motor Co Ltd | ディーゼルエンジンの燃料噴射装置 |
JP3758879B2 (ja) * | 1999-02-16 | 2006-03-22 | 三菱ふそうトラック・バス株式会社 | 蓄圧式燃料噴射制御装置 |
DE10358266B4 (de) | 2003-12-11 | 2008-06-05 | L'orange Gmbh | Kraftstoff-Einspritzsystem für Brennkraftmaschinen |
WO2006081829A1 (en) | 2005-02-02 | 2006-08-10 | Man Diesel A/S | A large two-stroke diesel engine with hydraulically actuated exhaust gas valves |
KR20070062171A (ko) * | 2005-12-12 | 2007-06-15 | 현대자동차주식회사 | 커먼레일의 고압을 이용한 밸브 |
EP1977106B1 (de) * | 2006-04-12 | 2009-09-30 | MAN B & W Diesel A/S | Grosser zweitakt-kreuzkopf-dieselmotor vom gleichstromtyp |
JP4121531B2 (ja) * | 2006-05-12 | 2008-07-23 | エムエーエヌ・ディーゼル・エーエス | 大型2サイクルディーゼルエンジンのための燃料循環式コモンレール燃料噴射装置 |
JP4793162B2 (ja) * | 2006-08-11 | 2011-10-12 | 株式会社デンソー | 超臨界燃料用燃料噴射装置 |
DE102007011789A1 (de) | 2007-03-12 | 2008-09-18 | Robert Bosch Gmbh | Kraftstoffinjektor |
AT505666B1 (de) | 2007-08-20 | 2009-03-15 | Bosch Gmbh Robert | Verfahren und vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine |
-
2010
- 2010-01-19 AT AT0006410A patent/AT509405A1/de not_active Application Discontinuation
-
2011
- 2011-01-18 CN CN201180006505.3A patent/CN102713235B/zh active Active
- 2011-01-18 JP JP2012541279A patent/JP5674807B2/ja active Active
- 2011-01-18 EP EP11702387.9A patent/EP2526283B1/de active Active
- 2011-01-18 WO PCT/AT2011/000031 patent/WO2011088490A1/de active Application Filing
- 2011-01-18 US US13/522,910 patent/US8635992B2/en not_active Expired - Fee Related
- 2011-01-18 KR KR1020127021615A patent/KR101398580B1/ko active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2011088490A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20120115549A (ko) | 2012-10-18 |
US20120291759A1 (en) | 2012-11-22 |
KR101398580B1 (ko) | 2014-05-23 |
CN102713235A (zh) | 2012-10-03 |
EP2526283B1 (de) | 2015-03-18 |
JP2013512388A (ja) | 2013-04-11 |
JP5674807B2 (ja) | 2015-02-25 |
WO2011088490A1 (de) | 2011-07-28 |
CN102713235B (zh) | 2015-11-25 |
AT509405A1 (de) | 2011-08-15 |
US8635992B2 (en) | 2014-01-28 |
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