EP1440239A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1440239A1 EP1440239A1 EP02769885A EP02769885A EP1440239A1 EP 1440239 A1 EP1440239 A1 EP 1440239A1 EP 02769885 A EP02769885 A EP 02769885A EP 02769885 A EP02769885 A EP 02769885A EP 1440239 A1 EP1440239 A1 EP 1440239A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel injection
- injection valve
- fuel
- valve needle
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- 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
- F02M61/04—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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive 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
- 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
- F02M61/042—The valves being provided with fuel passages
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- an outwardly opening fuel injector which has a conical sealing seat.
- the valve needle has a central bore which opens into a pressure chamber upstream of the sealing seat.
- An actuator which is designed as a piezoelectric actuator, is supported on the one hand against a nozzle body and on the other hand against a pressure shoulder that is non-positively connected to the valve needle.
- a return spring holds the valve needle in a closed position. When the actuator is excited, the valve needle is opened against the closing force of the return spring and the fuel is sprayed off.
- a disadvantage of the fuel injector known from DE 195 34 445 AI is in particular that the fuel jet injected into the combustion chamber of the internal combustion engine is conical with a certain opening angle ⁇ . ⁇ angles injection under various opening ⁇ , which for example the taking into account different requirements for the shape of the mixture cloud in the part-load and full-load range is not possible here.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that, depending on the stroke position of the valve needle, a larger or smaller jet opening angle can be represented, which can be selected according to the operating state of the internal combustion engine.
- this can be achieved by means of a geometry that is easy to manufacture and that of the end of the fuel injector that is adjacent to the sealing seat.
- an inclined region is formed adjacent to the valve seat surface.
- any desired jet angle can be realized by means of appropriate shaping of the downstream end of the fuel injector and correspondingly of the valve closing body.
- FIG. 1 shows a schematic section through an exemplary embodiment of a fuel injector designed according to the invention in a first stroke position
- Fig. 2 shows a schematic section through an embodiment of a fuel injector designed according to the invention in a second stroke position.
- FIGS. 1 and 2 An embodiment of a fuel injector 1 according to the invention shown in FIGS. 1 and 2 in two different lifting states is in the form of a fuel injector 1 for fuel injection systems of mixture-compression-ignition, spark-ignited
- the fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injector 1 consists of a housing body 2 and a nozzle body 3, in which a valve needle 4 is arranged.
- the valve needle 4 is operatively connected to a valve closing body 5, which cooperates with a valve seat surface 6 to form a sealing seat.
- fuel injector 1 is a fuel injector 1 that opens outward.
- Fuel injector 1 has an actuator 7, which in the exemplary embodiment is designed as a piezoelectric actuator 7.
- the actuator is supported on the one hand on the housing body 2 and on the other hand on a shoulder 8 which is operatively connected to the valve needle 4.
- a return spring 9 is arranged on the outflow side of the shoulder 8, which in turn is supported on the nozzle body 3.
- the valve needle 4 has a fuel channel 10, through which the fuel fed through an inlet-side central fuel supply 11 is guided to the sealing seat. Upstream of the sealing seat is one Swirl chamber 12 is formed, which the fuel channel 10 fills out
- the shoulder 8 In the idle state of the fuel injector 1, the shoulder 8 is acted against by the force of the return spring 9 against the stroke direction so that the valve closing body 5 is held on the valve seat surface 6 m sealing system.
- this m When the piezoelectric actuator 7 is excited, this m extends in the axial direction counter to the spring force of the return spring 9, so that the shoulder 8 is moved in the stroke direction with the valve needle 4, which is non-positively connected to the shoulder 8.
- the valve closing body 5 lifts off from the valve seat surface 6, and the fuel passed through the fuel channel 10 is sprayed off.
- a mixture-compressing, externally ignited internal combustion engine places different demands on the shape, the stoichiometer and the penetration capacity of the m the part-load operation
- Combustion chamber injected mixture cloud than in full load operation.
- the mixture cloud in part-load operation, should have a relatively small opening oti, a large penetration capacity, one through the small one
- full load range ⁇ st as shown in FIG. 2, requires a large opening angle ⁇ 2 and thus an almost homogeneous filling of the cylinder with a mixture capable of ignition.
- two stroke states are defined for the fuel injector 1 according to the invention, whereby different jet images can be displayed during operation, which can be selected according to the operating state of the internal combustion engine.
- FIG. 1 shows the fuel injection valve 1 in a first lifting state.
- the valve closing body 5 has already lifted off the valve seat surface 6, but only opens a gap 13 of small width between the valve closing body 5 and the valve seat surface 6.
- a fuel jet can be represented with a small opening angle ⁇ , which has a large penetration capacity required for stratified charge operation.
- valve closing body 5 shows a second stroke position of the fuel injection valve 1.
- the valve closing body 5 is now moved further away from the valve seat surface 6, so that the gap 13 is wider than in Fig. 1. Due to the entrainment of the flow on the outside of the injection jet of the gap 13, the sprayed fuel jet now contacts the valve closing body 5, which has a large inclination relative to the longitudinal axis 16 of the fuel injection valve 1 and thus leads to a strong expansion of the fuel jet.
- the opening angle ⁇ 2 is thus increased compared to the first stroke position, which is advantageous for the full-load range of the internal combustion engine, since the entire combustion chamber is filled with a relatively homogeneous, stoichiometric mixture.
- the different stroke positions of the valve needle 4 can in a simple manner, for. B.
- two separately controllable actuators 7. can be, for example, a voltage-controlled or voltage-controlled piezo actuator and two piezoelectric actuators 7, which are activated one after the other.
- the use of two magnetic circuits with two separate coils or a two-part magnet armature is also conceivable.
- the jet angles ⁇ i and ⁇ 2 can be selected so that the combustion chamber of the internal combustion engine can be optimally filled with an ignitable fuel-air mixture.
- the manufacture of the inclined region 15 and the valve seat surface 6 can be done, for example, in the manufacture of the nozzle body 3. B. done by turning.
- the invention is not limited to the exemplary embodiment shown and can be used for any construction of fuel injection valves 1 with any actuators 7.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10152416A DE10152416A1 (de) | 2001-10-24 | 2001-10-24 | Brennstoffeinspritzventil |
DE10152416 | 2001-10-24 | ||
PCT/DE2002/003072 WO2003038273A1 (de) | 2001-10-24 | 2002-08-22 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1440239A1 true EP1440239A1 (de) | 2004-07-28 |
EP1440239B1 EP1440239B1 (de) | 2005-07-20 |
Family
ID=7703530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02769885A Expired - Lifetime EP1440239B1 (de) | 2001-10-24 | 2002-08-22 | Brennstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US7140562B2 (de) |
EP (1) | EP1440239B1 (de) |
JP (1) | JP4377230B2 (de) |
KR (1) | KR20040054734A (de) |
DE (2) | DE10152416A1 (de) |
WO (1) | WO2003038273A1 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259799A1 (de) * | 2002-12-19 | 2004-07-29 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP1500812A1 (de) * | 2003-07-25 | 2005-01-26 | Delphi Technologies, Inc. | Nach aussen öffnende Kraftstoffeinspritzdüse |
DE10346970B3 (de) * | 2003-10-09 | 2004-11-18 | Siemens Ag | Verfahren zum Steuern einer Brennkraftmaschine |
DE10353639A1 (de) * | 2003-11-17 | 2005-06-16 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
CN100422545C (zh) * | 2004-12-15 | 2008-10-01 | 浙江飞亚电子有限公司 | 一种喷油嘴 |
US8635985B2 (en) | 2008-01-07 | 2014-01-28 | Mcalister Technologies, Llc | Integrated fuel injectors and igniters and associated methods of use and manufacture |
US8413634B2 (en) | 2008-01-07 | 2013-04-09 | Mcalister Technologies, Llc | Integrated fuel injector igniters with conductive cable assemblies |
US7628137B1 (en) | 2008-01-07 | 2009-12-08 | Mcalister Roy E | Multifuel storage, metering and ignition system |
US8225768B2 (en) | 2008-01-07 | 2012-07-24 | Mcalister Technologies, Llc | Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture |
US8074625B2 (en) * | 2008-01-07 | 2011-12-13 | Mcalister Technologies, Llc | Fuel injector actuator assemblies and associated methods of use and manufacture |
US8561598B2 (en) | 2008-01-07 | 2013-10-22 | Mcalister Technologies, Llc | Method and system of thermochemical regeneration to provide oxygenated fuel, for example, with fuel-cooled fuel injectors |
US8365700B2 (en) | 2008-01-07 | 2013-02-05 | Mcalister Technologies, Llc | Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control |
US8387599B2 (en) | 2008-01-07 | 2013-03-05 | Mcalister Technologies, Llc | Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines |
US9316189B2 (en) * | 2008-01-14 | 2016-04-19 | North Carolina State University | Fuel injection device for an internal combustion engine, and associated method |
JPWO2010055927A1 (ja) * | 2008-11-14 | 2012-04-12 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置 |
JP5537049B2 (ja) * | 2009-03-06 | 2014-07-02 | 日立オートモティブシステムズ株式会社 | 筒内噴射式火花点火機関 |
KR101033080B1 (ko) * | 2009-06-24 | 2011-05-06 | 현대중공업 주식회사 | 디젤 엔진용 연료 분사밸브 |
CN102713244A (zh) | 2009-08-27 | 2012-10-03 | 麦卡利斯特技术有限责任公司 | 在具有多个驱动器和/或电离控制的燃烧室中成形供应燃料 |
CA2772043C (en) | 2009-08-27 | 2014-01-07 | Mcalister Technologies, Llc | Ceramic insulator and methods of use and manufacture thereof |
MX2012006565A (es) | 2009-12-07 | 2012-08-23 | Mcalister Technologies Llc | Sistema de control adaptable para inyectores de combustible. y dispositivos de encendido. |
EP2534364A4 (de) | 2010-02-13 | 2014-04-23 | Mcalister Technologies Llc | Brennstoffeinspritzbaugruppen mit akustischen kraftverstärkern sowie verfahren zu ihrer verwendung und herstellung |
US20110297753A1 (en) | 2010-12-06 | 2011-12-08 | Mcalister Roy E | Integrated fuel injector igniters configured to inject multiple fuels and/or coolants and associated methods of use and manufacture |
EP2534347B1 (de) | 2010-02-13 | 2016-05-04 | McAlister, Roy Edward | Verfahren und systeme zur adaptiven kühlung von verbrennungskammern in motoren |
KR101144482B1 (ko) | 2010-10-06 | 2012-05-11 | (주)제너진 | 엔진의 직분사 인젝터 |
US8528519B2 (en) | 2010-10-27 | 2013-09-10 | Mcalister Technologies, Llc | Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture |
US8091528B2 (en) | 2010-12-06 | 2012-01-10 | Mcalister Technologies, Llc | Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture |
WO2012112615A1 (en) | 2011-02-14 | 2012-08-23 | Mcalister Technologies, Llc | Torque multiplier engines |
WO2013025626A1 (en) | 2011-08-12 | 2013-02-21 | Mcalister Technologies, Llc | Acoustically actuated flow valve assembly including a plurality of reed valves |
CN103890343B (zh) | 2011-08-12 | 2015-07-15 | 麦卡利斯特技术有限责任公司 | 用于改进的发动机冷却及能量产生的系统和方法 |
US20130068200A1 (en) * | 2011-09-15 | 2013-03-21 | Paul Reynolds | Injector Valve with Miniscule Actuator Displacement |
CN102912379A (zh) * | 2012-10-25 | 2013-02-06 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种制备金属钛的方法 |
US9091238B2 (en) | 2012-11-12 | 2015-07-28 | Advanced Green Technologies, Llc | Systems and methods for providing motion amplification and compensation by fluid displacement |
US9309846B2 (en) | 2012-11-12 | 2016-04-12 | Mcalister Technologies, Llc | Motion modifiers for fuel injection systems |
US9744540B2 (en) * | 2015-04-21 | 2017-08-29 | Dresser, Inc. | Water injector nozzle |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE231126C (de) | ||||
US2796296A (en) * | 1953-04-27 | 1957-06-18 | John F Campbell | Nozzle exit valve |
DE967935C (de) | 1953-12-13 | 1957-12-27 | Kloeckner Humboldt Deutz Ag | Brennstoffeinspritzventil |
US4197997A (en) * | 1978-07-28 | 1980-04-15 | Ford Motor Company | Floating ring fuel injector valve |
DE3300670A1 (de) | 1982-01-23 | 1983-08-04 | Lucas Industries P.L.C., Birmingham, West Midlands | Kraftstoffeinspritzduese |
DE3719459A1 (de) * | 1987-06-11 | 1988-12-29 | Bosch Gmbh Robert | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
US4993643A (en) * | 1988-10-05 | 1991-02-19 | Ford Motor Company | Fuel injector with variable fuel spray shape or pattern |
DE4005455A1 (de) * | 1989-02-28 | 1990-08-30 | Volkswagen Ag | Zumessventil, insbesondere kraftstoff-einspritzventil fuer eine brennkraftmaschine |
US4982708A (en) * | 1989-06-22 | 1991-01-08 | Robert Bosch Gmbh | Fuel injection nozzle for internal combustion engines |
DE19534445C2 (de) * | 1995-09-16 | 1998-07-30 | Man Nutzfahrzeuge Ag | Einspritzventil für Brennkraftmaschinen |
DE19642653C5 (de) * | 1996-10-16 | 2008-02-21 | Daimler Ag | Verfahren zur Bildung eines zündfähigen Kraftstoff/Luft-Gemisches |
DE19843570A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6042028A (en) * | 1999-02-18 | 2000-03-28 | General Motors Corporation | Direct injection fuel injector spray nozzle and method |
DE19936944A1 (de) | 1999-08-05 | 2001-02-08 | Bosch Gmbh Robert | Verfahren zum Zumessen von Brennstoff mit einem Brennstoffeinspritzventil |
DE19948237A1 (de) | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Verfahren zum Zumessen von Brennstoff mit einem Brennstoffeinspritzventil |
-
2001
- 2001-10-24 DE DE10152416A patent/DE10152416A1/de not_active Withdrawn
-
2002
- 2002-08-22 WO PCT/DE2002/003072 patent/WO2003038273A1/de active IP Right Grant
- 2002-08-22 JP JP2003540520A patent/JP4377230B2/ja not_active Expired - Lifetime
- 2002-08-22 KR KR10-2004-7005973A patent/KR20040054734A/ko not_active Application Discontinuation
- 2002-08-22 US US10/451,556 patent/US7140562B2/en not_active Expired - Fee Related
- 2002-08-22 DE DE50203701T patent/DE50203701D1/de not_active Expired - Lifetime
- 2002-08-22 EP EP02769885A patent/EP1440239B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03038273A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003038273A1 (de) | 2003-05-08 |
JP4377230B2 (ja) | 2009-12-02 |
DE50203701D1 (de) | 2005-08-25 |
KR20040054734A (ko) | 2004-06-25 |
US20040075002A1 (en) | 2004-04-22 |
EP1440239B1 (de) | 2005-07-20 |
US7140562B2 (en) | 2006-11-28 |
DE10152416A1 (de) | 2003-06-18 |
JP2005507055A (ja) | 2005-03-10 |
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