WO2010127887A1 - Vorrichtung zum einspritzen von kraftstoff - Google Patents
Vorrichtung zum einspritzen von kraftstoff Download PDFInfo
- Publication number
- WO2010127887A1 WO2010127887A1 PCT/EP2010/052814 EP2010052814W WO2010127887A1 WO 2010127887 A1 WO2010127887 A1 WO 2010127887A1 EP 2010052814 W EP2010052814 W EP 2010052814W WO 2010127887 A1 WO2010127887 A1 WO 2010127887A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- fuel
- valve needle
- pressure
- side part
- Prior art date
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/161—Means for adjusting injection-valve lift
Definitions
- the present invention relates to a device for injecting fuel, which can be used in particular in internal combustion engines with direct injection in the stratified charge mode.
- Devices for injecting fuel for internal combustion engines with direct injection are generally carried out in the prior art as high-pressure injection valves with outwardly opening valve needles, which are actuated by piezo actuators and controlled for the required highly dynamic switching times with complex power amplifiers.
- High demands on the material quality and manufacturing tolerances of the individual components of these injectors lead to long processing test and production times and the resulting high production costs of these injectors.
- the device according to the invention for injecting fuel with the features of claim 1 has the advantage that this has both a simpler and thus more cost-effective structure, as well as less critical in terms of the required manufacturing and position tolerances of the individual components.
- This is inventively achieved in that the Device for injecting fuel, a multi-part, outwardly opening valve needle and a membrane which fluid-tightly divides an actuator space in a first fuel-filled area and a second fuel-free area and at the same time divides the valve needle into an injection-side part and an actuator-side part.
- a pressure equalizing piston which is arranged on the injection-side part of the valve needle, while a fuel-filled pressure chamber is separated from the first fuel-filled portion of the actuator chamber.
- the actuator is arranged here in the second fuel-free region of the actuator chamber, a cost-effective electromagnetic actuator can be used, which can achieve the desired highly dynamic switching times. Furthermore, the advantageous use of special soft magnetic materials in the actuator is possible because the actuator components are not exposed to any corrosive effect of the fuel.
- the pressure compensation piston is slidably disposed with little play in a cylindrical bore of a valve body and provided with a sealing gap.
- the device according to the invention preferably has a fuel return line from the first region of the actuator chamber to a fuel
- an armature is arranged on the actuator-side part of the valve needle.
- the actuator comprises a Freiwegfeder whose spring force is designed so that the actuator-side part of the valve needle is always applied to the diaphragm even when not actuated actuator.
- Anchor is in a defined starting position.
- the return element is designed so that the injection-side part of the valve needle, even when not actuated actuator, d. H. closed valve needle, always applied to the membrane. This will lift the
- the actuator-side and the injection-side part are always in contact with the membrane in each operating state of the injection device.
- the injection-side part of the valve needle is formed in two parts with a needle and the pressure compensation piston.
- a membrane-facing end of the pressure-compensating piston and a membrane facing the end of the actuator-side part of the valve needle are each formed rounded.
- a homogeneous edition of these ends, in particular in a shifted, d. H. bagged state of the membrane ensured and damage the membrane, z. B. by sharp edges of non-rounded end portions of the pressure compensating piston and the actuator-side part of the valve needle avoided.
- Figure 1 is a schematically simplified sectional view of a
- the device 1 for injecting fuel comprises a valve body 2 and an outwardly opening valve needle 3, which is formed from an injection-side part 3a and an actuator-side part 3b.
- the injection-side part 3a of the valve needle 3 comprises a needle 31 and a pressure compensation piston 10, which are arranged in a pressure chamber 4, the fuel is supplied via a supply line 19 under pressure.
- the pressure compensation piston 10 is slidably disposed in a cylindrical bore 16 of the valve body 2 with little play.
- a return element 20 is further arranged, which is supported between the valve body 2 and the needle 31 and the valve needle 3 returns to an initial position after actuation.
- an electromagnetic actuator 6 is arranged, which comprises a coil 8 and an armature 7, preferably of the type of one shown here
- Flat anchor comprises, which is attached to the actuator-side part 3b of the valve needle 3.
- a diaphragm 13 is further arranged, which is attached to the valve body 2 and on the one hand the valve needle 3 divided into the injection-side part 3a and the actuator-side part 3b, and on the other hand, the actuator chamber 9 in a first fuel-filled region 5 and a second fuel-free region 18 divided fluid-tight.
- the first region 5 of the actuator chamber 9 is at least partially filled with fuel which enters the first fuel-filled region 5 via a sealing gap 17 formed on the surface of the pressure-compensating piston 10 as a result of the higher pressure from the pressure chamber 4.
- an end 10a of the pressure-compensating piston 10 facing the diaphragm 13 and an end 15 of the actuator-side part 3b of the valve needle 3 facing the diaphragm 13 are in each case rounded. As a result, damage to the membrane 13 can be prevented by the possibly formed paragraphs or edges on the end of this
- Components would be caused when moving or buckling of the membrane 13 during operation of the device 1.
- a fuel return line 14 branches off from the first fuel-filled region 5 of the actuator chamber 9. Through this fuel
- a free-return spring 12 is further arranged between the armature 7 and a closing element 21 and supports the actuator-side part 3b of the valve spring 3 with the armature 7 fixed thereto at a closing element 21.
- An electrical connection line 22 for the actuator 6 is through the
- the freewheeling spring 12 is designed so that the actuator-side part 3b of the valve spring 3 rests against the diaphragm 13 even when the actuator 6 is not actuated.
- the geometry is designed so that the injection-side part 3a of the valve needle 3 rests against the diaphragm 13 even when the actuator 6 is not actuated (closed valve needle). Due to the two-sided concern of the actuator-side and injection-side parts 3a, 3b of Valve needle 3 in each operating state, a quasi-rigid component combination of the device 1 according to the invention for actuating the valve needle 3 is achieved. In this case, a small radial offset or a small angular offset on the diaphragm 13 between the actuator-side and injection-side parts 3a, 3b, if present after assembly, may be present
- Valve needle 3 are tolerated, since this has no effect on the proper and reliable operation of the device 1 according to the invention.
- Valve body 2 can be made separately and tested separately.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES10707271T ES2424089T3 (es) | 2009-05-06 | 2010-03-05 | Dispositivo para inyectar combustible |
BRPI1011824A BRPI1011824A2 (pt) | 2009-05-06 | 2010-03-05 | dispositivo para injeção de combustível |
KR1020117026346A KR101711851B1 (ko) | 2009-05-06 | 2010-03-05 | 연료 분사 장치 |
JP2012508958A JP5490222B2 (ja) | 2009-05-06 | 2010-03-05 | 燃料を噴射するための装置 |
CN201080019799.9A CN102414431B (zh) | 2009-05-06 | 2010-03-05 | 用于喷射燃料的装置 |
US13/259,438 US8960573B2 (en) | 2009-05-06 | 2010-03-05 | Device for injecting fuel |
RU2011149359/06A RU2538146C2 (ru) | 2009-05-06 | 2010-03-05 | Устройство впрыскивания топлива |
EP10707271.2A EP2427649B1 (de) | 2009-05-06 | 2010-03-05 | Vorrichtung zum einspritzen von kraftstoff |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009002840A DE102009002840A1 (de) | 2009-05-06 | 2009-05-06 | Vorrichtung zum Einspritzen von Kraftstoff |
DE102009002840.4 | 2009-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010127887A1 true WO2010127887A1 (de) | 2010-11-11 |
Family
ID=42167596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/052814 WO2010127887A1 (de) | 2009-05-06 | 2010-03-05 | Vorrichtung zum einspritzen von kraftstoff |
Country Status (10)
Country | Link |
---|---|
US (1) | US8960573B2 (de) |
EP (1) | EP2427649B1 (de) |
JP (1) | JP5490222B2 (de) |
KR (1) | KR101711851B1 (de) |
CN (1) | CN102414431B (de) |
BR (1) | BRPI1011824A2 (de) |
DE (1) | DE102009002840A1 (de) |
ES (1) | ES2424089T3 (de) |
RU (1) | RU2538146C2 (de) |
WO (1) | WO2010127887A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010031643A1 (de) * | 2010-07-22 | 2012-01-26 | Robert Bosch Gmbh | Kraftstoffeinspritzventil mit trockenem Magnetaktor |
RU2540347C2 (ru) * | 2013-01-24 | 2015-02-10 | Федеральное государственнное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Электроуправляемая форсунка для впрыскивания топлива в двигатель внутреннего сгорания |
CN105370468B (zh) * | 2015-12-11 | 2017-09-29 | 中国北方发动机研究所(天津) | 喷油器压力控制阀 |
DE102018212665A1 (de) * | 2018-07-30 | 2020-01-30 | Robert Bosch Gmbh | Kolbenpumpe und Kraftstofffördereinrichtung für kryogene Kraftstoffe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10060939A1 (de) * | 2000-12-07 | 2002-06-13 | Siemens Ag | Fluiddosiervorrichtung mit Drosselstelle |
WO2003089781A1 (de) * | 2002-04-22 | 2003-10-30 | Siemens Aktiengesellschaft | Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventil |
WO2005050001A1 (de) * | 2003-11-17 | 2005-06-02 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4695034A (en) * | 1984-11-27 | 1987-09-22 | Stec Inc. | Fluid control device |
DE3533085A1 (de) * | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
DE3808671A1 (de) * | 1987-03-13 | 1988-09-22 | Orbital Eng Pty | Vorrichtung und verfahren zur kraftstoffeinspritzung |
US5031841A (en) * | 1989-02-28 | 1991-07-16 | Volkswagen Ag | Metering valve, particularly fuel injection valve |
JPH0486367A (ja) * | 1990-07-30 | 1992-03-18 | Aisin Seiki Co Ltd | 燃料噴射弁 |
DE19601019A1 (de) * | 1996-01-13 | 1997-07-17 | Bosch Gmbh Robert | Einspritzventil, insbesondere zum direkten Einspritzen von Kraftstoff in einen Brennraum eines Verbrennungsmotors |
DE10019766A1 (de) * | 2000-04-20 | 2001-10-31 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10204655A1 (de) * | 2002-02-05 | 2003-08-28 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
FR2836536B1 (fr) * | 2002-02-26 | 2004-05-14 | Cedrat Technologies | Vanne piezoelectrique |
RU2247855C1 (ru) | 2003-07-21 | 2005-03-10 | Открытое акционерное общество "Ярославский завод топливной аппаратуры" (ОАО "ЯЗТА") | Форсунка для двигателя внутреннего сгорания |
US6971172B2 (en) * | 2003-08-08 | 2005-12-06 | Cummins Inc. | Piezoelectric control valve adjustment method |
-
2009
- 2009-05-06 DE DE102009002840A patent/DE102009002840A1/de not_active Withdrawn
-
2010
- 2010-03-05 EP EP10707271.2A patent/EP2427649B1/de not_active Not-in-force
- 2010-03-05 US US13/259,438 patent/US8960573B2/en not_active Expired - Fee Related
- 2010-03-05 CN CN201080019799.9A patent/CN102414431B/zh not_active Expired - Fee Related
- 2010-03-05 JP JP2012508958A patent/JP5490222B2/ja not_active Expired - Fee Related
- 2010-03-05 KR KR1020117026346A patent/KR101711851B1/ko active IP Right Grant
- 2010-03-05 RU RU2011149359/06A patent/RU2538146C2/ru not_active IP Right Cessation
- 2010-03-05 BR BRPI1011824A patent/BRPI1011824A2/pt not_active IP Right Cessation
- 2010-03-05 WO PCT/EP2010/052814 patent/WO2010127887A1/de active Application Filing
- 2010-03-05 ES ES10707271T patent/ES2424089T3/es active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10060939A1 (de) * | 2000-12-07 | 2002-06-13 | Siemens Ag | Fluiddosiervorrichtung mit Drosselstelle |
WO2003089781A1 (de) * | 2002-04-22 | 2003-10-30 | Siemens Aktiengesellschaft | Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventil |
WO2005050001A1 (de) * | 2003-11-17 | 2005-06-02 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Also Published As
Publication number | Publication date |
---|---|
ES2424089T3 (es) | 2013-09-27 |
EP2427649A1 (de) | 2012-03-14 |
EP2427649B1 (de) | 2013-07-17 |
CN102414431B (zh) | 2014-05-07 |
RU2538146C2 (ru) | 2015-01-10 |
CN102414431A (zh) | 2012-04-11 |
US20120074245A1 (en) | 2012-03-29 |
JP2012526226A (ja) | 2012-10-25 |
US8960573B2 (en) | 2015-02-24 |
JP5490222B2 (ja) | 2014-05-14 |
BRPI1011824A2 (pt) | 2016-03-22 |
DE102009002840A1 (de) | 2010-11-11 |
RU2011149359A (ru) | 2013-06-20 |
KR20120014139A (ko) | 2012-02-16 |
KR101711851B1 (ko) | 2017-03-03 |
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