CN1080378C - 内燃机喷油阀 - Google Patents
内燃机喷油阀 Download PDFInfo
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- CN1080378C CN1080378C CN96110074A CN96110074A CN1080378C CN 1080378 C CN1080378 C CN 1080378C CN 96110074 A CN96110074 A CN 96110074A CN 96110074 A CN96110074 A CN 96110074A CN 1080378 C CN1080378 C CN 1080378C
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- injection valve
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- 238000005507 spraying Methods 0.000 title claims description 20
- 239000010705 motor oil Substances 0.000 title description 2
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 22
- 239000000295 fuel oil Substances 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- 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
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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
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
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
已知纵向孔中装有喷孔片的喷油阀缺点是,发动机停车后,凝集在喷孔处的蒸发剩余燃油导致喷孔截面积减少,当由本发明克服。因此,于喷油阀体(1)纵向孔(3)中,距喷孔片(21)很小的下游位安装一个间隙片(40),使两者间形成轴向毛细隙(47)对喷孔处燃油起径向朝外的毛细作用。并且通过加装在喷孔片(21)与间隙片(40)间的毛细片(48)的造形调整,可使毛细作用最优化。此喷油器特别适于混合压缩火花式内燃机。
Description
本发明涉及一种内燃机喷油阀。在现存喷油阀(DE4026721 A1)中,当其关闭时,阀门、阀体和喷孔片之间的所谓死区内剩有少量燃油,通常只有低沸点组份会蒸发,而高沸点燃油组份残留下来。所以,经过内燃机一系列开动和停车的过程后,残留的燃油组份淤集在喷孔或喷孔群部,妨碍燃油喷入,从而内燃机得不到充分的燃一空混合气,工作性能恶化。在另一种喷油阀(DE3927390 A1)中,为了克服这一缺点,在喷油阀出口端安装了一个防护帽,紧挨着喷孔,在防护帽上开出毛细隙对喷孔处的燃油起毛细作用,因此,喷油器关闭后,喷孔处可能喷出的燃油被吸入毛细隙,使蒸发残留的淤积仅存留在毛细隙内。
本发明的目的在于,提供一种内燃机喷油阀,可防止喷孔处燃油淤积,从而避免燃空混合气产生不希望的减少。
根据本发明的内燃机喷油阀具有阀体,在阀体纵向孔中装有阀体组件且阀体组件下游装有设一至数个喷孔的喷孔片,在贴近喷孔或喷孔群处,于纵向孔内装有一个带中心孔的间隙片并在喷口片和间隙片之间至少有一个毛细隙,它对喷口流出的燃油起径向向外的毛细作用。
本发明的特别优点是,在喷孔片与间隙片间插入一个毛细作用片,把毛细隙设在其中,使毛细隙造形简单易行而且可以控制其容积在需要限度。
以下用示意图示意性地说明本发明实施方案。
图1是根据喷油器的部分示意图表示的本发明的一种
实施方案,
图2是毛细作用片的顶视图。
图1所示为用于本发明提出的混合压缩,电点火内燃机喷油器的公知喷油阀的第一实施例的部分图,大体与同类喷油器相同。喷油阀有一个管状阀体1、与该阀纵轴2同心的纵向孔3。该纵向孔3中有一个可以做成管状的轴针5,下游端联接一个球形阀门7,其周卷有数个,例如5个圆形凹面8。
喷油阀启闭可以由电磁铁控制。图中略去了使阀门5轴向运动开启喷油阀的压簧以及关闭喷油阀的由绕组、衔铁和铁芯组成的电磁铁。衔铁联在轴针5的阀门7端,与铁芯相对。阀体导向圆柱面15的作用是引导阀门7的轴向运动。圆柱形的阀体16插入与喷油阀纵轴2同心的纵向孔3中,位于喷油阀壳体1的下游部。阀体16的外径略小于喷油阀壳体1的纵向孔3。可以是碗状的喷孔片21的顶面19同心且牢固地联在阀门7远端之下的阀体16底面17上。喷孔片21的底部20在中心区24有一至数个用腐蚀或冲压之类方法形成的喷孔25。喷孔片21底部20周边为锁定环26,轴向经阀体26远端延伸至边缘27,呈圆锥形外翻。由于阀体16外径略小于喷油阀1纵向孔3的直径,因此该纵向孔3与锥状外翻的喷孔片21的锁定环26之间存在径向压力。
阀体16和碗状喷孔片21组成的阀体组件在纵向孔3中插入的深度决定着轴针5的冲程,因为不激励电磁铁时,轴针5的终端位置由紧贴着阀体16密封锥面29的阀门7的位置限定。激励电磁铁时,第一终端位置由吸于铁芯上的衔铁位置限定。轴针两终位间距离为冲程。
喷孔片21锁定环26的边缘27与纵向孔3壁牢固地联在一起,在锁定环26边缘27与纵向孔3壁间形成圆周接缝30,底部20于中心区24以外由另一圆周接缝31把喷孔片21与阀体16牢固地联结成一体。球形阀门7与阀体16的导向面16和位于阀体16下面的出口32间的密封锥面29配合,该锥面呈截锥状顺流缩细。如此设计阀体导向面15的直径,使球形阀门7以除凹面8之外之极小的径向间距与导向面15吻合,以正确引导阀门7,及轴针5的轴向运动。
喷孔片21中心区24的喷孔25位于出口32正下方。阀门7,底部20上顶面19的密封锥面29以及出口32之间形成一个收集室37;在阀门7抬离密封锥面29时,燃油首先进入该室,再经过喷孔25喷入内燃机的进气管,喷油阀关闭后在这个收集室37内残留少量燃油。因此,总是希望尽量减小这一称作死区的收集室,以尽量减少喷油器关闭后在其中残留的燃油。关闭喷油阀后在收集室中残留的燃油的一个有害方面是,内燃机停车后,燃烧室传出的能量使燃油部分蒸发或全部蒸发。一般只有低沸点的燃油组成部分蒸发,而高沸点组分残留城喷孔25中,形成淤集。在喷孔25的燃油淤集后果是,在相同的喷油器开启时间内,喷入导气管的油料减少,使油-气混合物减少,恶化内燃机工作性能。
喷孔片21下流方向,在喷渍阀壳体1的纵向孔3中安装了一个间隙片40,它有一个与喷油阀纵轴2同心的中心孔41,其直径大于出口32直径,该间隙片40也可制成碗状且有一呈锥形外翻离向喷口片21的间隙片锁定环42。该间隙片锁定环在其末缘43的直径大于该纵向孔3。这样将该间隙片40压入纵向孔3时,末缘43对纵向孔3壁有一径向压力。此外,该末缘43还可这样固定在纵向孔3中即可用周圈焊缝44或点焊方法与纵向孔3连接。间隙片40的片底45的喷孔片21的底部20之间纵向距离0.5至1mm,平行于喷油阀纵轴20,这样就在底部20和该间隙片45间形成仅0.5至1mm轴向宽度的毛细隙47。如此,内燃机停车后,收集室37蒸发残留并由收集室37溢向喷孔25的剩余燃油将受到毛细隙47的毛细管样作用,径向向外吸到毛细隙47中。这种以喷孔片21和间隙片40间距构成的毛细隙47代表了本发明第一实施方案。
下面结合图2和图1说明本发明第二实施方案。在本发明第二实施方案中,在纵向孔3内,于喷孔片21和间隙片40之间加装了毛细片48。该毛细片之上表面紧贴在喷孔片21上而其下表面紧贴在间隙片45上。该毛细片48可以用塑料或橡胶等制成,图2为毛细片48的顶视图。在图2中可以注意到,毛细片48上开有带幅射样花槽50的星形孔49。花槽50沿圆周等距离排列并与喷孔25及间隙片40的中心孔41开通。花槽50相对阀纵轴2的开槽宽度向着毛细片48的圆周方向可缩也可伸。圆周方向上,花槽50的开口宽度小于间隙片40的中心孔41。通过装设毛细片48,可以用简单的方法,选择最佳的产生毛细作用所要求的喷孔片21的间隙片40间的毛细容积。
Claims (10)
1.一种内燃机喷油阀,它具有阀体,在阀体纵向孔中装有阀体组件且阀体组件下游装有设一至数个喷孔的喷孔片,其特征是在贴近喷孔或喷孔群(25)处,于纵向孔(3)内装有一个带中心孔(41)的间隙片(40)并在喷口片(21)和间隙片(40)之间至少有一个毛细隙(47,50),它对喷口(25)流出的燃油起径向向外的毛细作用。
2.根据权利要求1的喷油阀,其特征是,毛细隙(47,50)开口朝向中心孔(41)并被间隙片(40)掩盖,径向向外延伸。
3.根据权利要求2的喷油阀,其特征是,其毛细隙47为圆形。
4.根据权利要求1的喷油阀,其特征是,夹在喷孔片(21)和间隙片(40)之间,与二者紧贴装有毛细片(48),其上至少有一个朝向中心孔(41)开向的毛细隙(47,50)。
5.根据权利要求4的喷油阀,其特征是,其毛细片(48)用塑料制成。
6.根据权利要求5的喷油阀,其特征是,至少有一个毛细隙(47,50)为花槽形。
7.根据权利要求6的喷油阀,其特征是,至少有一个毛细隙(47,50)沿径向延伸时向圆周方向加宽或缩窄。
8.根据权利要求6的喷油阀,其特征是,至少有一个毛细隙(47,50)的开口在圆周方向的宽度少于间隙片(40)中心孔(41)的直径。
9.根据权利要求4的喷油阀,其特征是,毛细隙(47,50)做成星状。
10.根据权利要求1的喷油阀,其特征是,间隙片(40)为碗形。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19522284.9 | 1995-06-20 | ||
DE19522284A DE19522284B4 (de) | 1995-06-20 | 1995-06-20 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1138664A CN1138664A (zh) | 1996-12-25 |
CN1080378C true CN1080378C (zh) | 2002-03-06 |
Family
ID=7764745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96110074A Expired - Fee Related CN1080378C (zh) | 1995-06-20 | 1996-06-19 | 内燃机喷油阀 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5823444A (zh) |
JP (1) | JP3811217B2 (zh) |
KR (1) | KR100420748B1 (zh) |
CN (1) | CN1080378C (zh) |
BR (1) | BR9602823A (zh) |
DE (1) | DE19522284B4 (zh) |
RU (1) | RU2151320C1 (zh) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19724075A1 (de) * | 1997-06-07 | 1998-12-10 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Lochscheibe für ein Einspritzventil und Lochscheibe für ein Einspritzventil und Einspritzventil |
JP3134813B2 (ja) * | 1997-06-20 | 2001-02-13 | トヨタ自動車株式会社 | 内燃機関の燃料噴射弁 |
DE19905721A1 (de) * | 1998-02-24 | 1999-08-26 | Hoerbiger Ventilwerke Gmbh | Gasventil |
DE19936942A1 (de) * | 1999-08-05 | 2001-02-08 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6390067B1 (en) * | 2000-08-10 | 2002-05-21 | Delphi Technologies, Inc. | Valve seat retainer for a fuel injector |
US6877678B2 (en) * | 2002-02-14 | 2005-04-12 | Delphi Technologies, Inc. | Fuel injector flow director plate retainer |
US6820598B2 (en) * | 2002-03-22 | 2004-11-23 | Chrysalis Technologies Incorporated | Capillary fuel injector with metering valve for an internal combustion engine |
US7357124B2 (en) * | 2002-05-10 | 2008-04-15 | Philip Morris Usa Inc. | Multiple capillary fuel injector for an internal combustion engine |
DE10321148A1 (de) * | 2003-05-12 | 2004-12-02 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US20050242212A1 (en) * | 2004-04-30 | 2005-11-03 | Chapaton Thomas J | Injector with fuel deposit-resistant director plate |
US7337768B2 (en) * | 2004-05-07 | 2008-03-04 | Philip Morris Usa Inc. | Multiple capillary fuel injector for an internal combustion engine |
DE102005017420A1 (de) * | 2005-04-15 | 2006-10-19 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
JP4505824B2 (ja) * | 2005-04-18 | 2010-07-21 | 株式会社デンソー | 燃料噴射弁 |
US7828232B2 (en) | 2005-04-18 | 2010-11-09 | Denso Corporation | Injection valve having nozzle hole |
JP2007146828A (ja) * | 2005-10-28 | 2007-06-14 | Hitachi Ltd | 燃料噴射弁 |
US8070132B2 (en) | 2006-06-19 | 2011-12-06 | Norgren, Inc. | Fluid control device with a non-circular flow area |
KR20120060616A (ko) | 2010-12-02 | 2012-06-12 | 현대자동차주식회사 | 엘피아이 인젝터 |
EP2857671A1 (en) * | 2013-10-04 | 2015-04-08 | Continental Automotive GmbH | Fluid injector |
CN113134429A (zh) * | 2020-01-16 | 2021-07-20 | 厦门松霖科技股份有限公司 | 出水组件及出水装置及厨房龙头 |
RU198476U1 (ru) * | 2020-02-03 | 2020-07-13 | Акционерное общество "Объединенная двигателестроительная корпорация" (АО "ОДК") | Диск ротора газотурбинного двигателя из никелевого жаропрочного сплава |
Citations (1)
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US5193747A (en) * | 1989-08-19 | 1993-03-16 | Robert Bosch Gmbh | Protective cap for a fuel injection valve |
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US4040396A (en) * | 1974-03-28 | 1977-08-09 | Diesel Kiki Co., Ltd. | Fuel injection valve for internal combustion engine |
DE2948874A1 (de) * | 1979-12-05 | 1981-06-11 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil |
US4907748A (en) * | 1988-08-12 | 1990-03-13 | Ford Motor Company | Fuel injector with silicon nozzle |
DE4004897C1 (en) * | 1990-02-16 | 1991-06-06 | Robert Bosch Gmbh, 7000 Stuttgart, De | IC engine fuel charge feed - has mix injection orifice coaxial to valve axis in base of sleeve |
DE4019752A1 (de) * | 1990-06-21 | 1992-01-02 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE4026721A1 (de) * | 1990-08-24 | 1992-02-27 | Bosch Gmbh Robert | Einspritzventil und verfahren zur herstellung eines einspritzventils |
CA2115819C (en) * | 1993-02-17 | 2000-07-25 | Yasuhide Tani | Fluid injection nozzle |
DE4331851A1 (de) * | 1993-09-20 | 1995-03-23 | Bosch Gmbh Robert | Lochkörper und Ventil mit Lochkörper |
US5437413A (en) * | 1994-03-24 | 1995-08-01 | Siemens Automotive L.P. | Multiple disk air assist atomizer for fuel injection |
US5484108A (en) * | 1994-03-31 | 1996-01-16 | Siemens Automotive L.P. | Fuel injector having novel multiple orifice disk members |
JP3560174B2 (ja) * | 1994-05-17 | 2004-09-02 | 株式会社デンソー | 流体噴射ノズル及びそれを用いた燃料噴射弁 |
US5570841A (en) * | 1994-10-07 | 1996-11-05 | Siemens Automotive Corporation | Multiple disk swirl atomizer for fuel injector |
DE4446241A1 (de) * | 1994-12-23 | 1996-06-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
1995
- 1995-06-20 DE DE19522284A patent/DE19522284B4/de not_active Expired - Fee Related
-
1996
- 1996-05-24 JP JP13035996A patent/JP3811217B2/ja not_active Expired - Fee Related
- 1996-06-19 BR BR9602823A patent/BR9602823A/pt not_active IP Right Cessation
- 1996-06-19 RU RU96112957/06A patent/RU2151320C1/ru not_active IP Right Cessation
- 1996-06-19 KR KR1019960022195A patent/KR100420748B1/ko not_active IP Right Cessation
- 1996-06-19 CN CN96110074A patent/CN1080378C/zh not_active Expired - Fee Related
- 1996-06-20 US US08/670,223 patent/US5823444A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5193747A (en) * | 1989-08-19 | 1993-03-16 | Robert Bosch Gmbh | Protective cap for a fuel injection valve |
Also Published As
Publication number | Publication date |
---|---|
DE19522284A1 (de) | 1997-01-09 |
US5823444A (en) | 1998-10-20 |
RU2151320C1 (ru) | 2000-06-20 |
DE19522284B4 (de) | 2007-05-10 |
JP3811217B2 (ja) | 2006-08-16 |
KR970001933A (ko) | 1997-01-24 |
KR100420748B1 (ko) | 2004-06-04 |
JPH0914088A (ja) | 1997-01-14 |
BR9602823A (pt) | 1998-10-06 |
CN1138664A (zh) | 1996-12-25 |
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