JP6412379B2 - 燃料噴射弁 - Google Patents
燃料噴射弁 Download PDFInfo
- Publication number
- JP6412379B2 JP6412379B2 JP2014189693A JP2014189693A JP6412379B2 JP 6412379 B2 JP6412379 B2 JP 6412379B2 JP 2014189693 A JP2014189693 A JP 2014189693A JP 2014189693 A JP2014189693 A JP 2014189693A JP 6412379 B2 JP6412379 B2 JP 6412379B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- valve
- fuel injection
- valve body
- valve seat
- 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.)
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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
-
- 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
Description
Claims (2)
- 弁座と前記弁座の下流側に形成され下端面を貫通する燃料導入孔とを有する弁座部材と、前記弁座と協働して燃料通路を開閉する弁体と、前記燃料導入孔の内周面よりも径方向外方に燃料噴射孔が形成され前記弁座部材の前記下端面に固定されたノズル部材とを備え、前記ノズル部材は外方に向かって曲面の突状を成す曲面突状部を有し、前記曲面突状部の内側に前記燃料導入孔から流入した燃料を径方向外方に向かって流す燃料拡散室が形成された燃料噴射弁において、
前記燃料噴射孔は、前記燃料導入孔の内周面よりも径方向外方で前記弁座部材の前記下端面と対向する、前記曲面突状部の部位に形成され、
前記弁体の先端部に突状部を有し、
前記弁体の前記突状部は、先端側の外周面が円筒面で構成され、前記円筒面の上流側で且つ前記弁座と前記弁体とが当接する燃料シート部の下流側にテーパー面が形成され、前記テーパー面と前記円筒面とが曲面で接続されており、
前記弁体の前記曲面の前記円筒面側の端部は、開弁時に、前記燃料導入孔よりも上流側に位置し、
前記弁体の前記突状部における先端側の端面は、閉弁時に、前記燃料導入孔を貫通して前記燃料拡散室側に突出しており、
前記弁体の前記突状部における前記外周面と前記燃料導入孔の内周面との間に環状の燃料通路が形成されており、
前記環状の燃料通路の総断面積は、開弁時に前記燃料シート部に形成される燃料通路の総断面積よりも大きいことを特徴とする燃料噴射弁。 - 請求項1に記載の燃料噴射弁において、
前記弁体の前記突状部は、開弁時においても前記燃料拡散室側に突出していることを特徴とする燃料噴射弁。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014189693A JP6412379B2 (ja) | 2014-09-18 | 2014-09-18 | 燃料噴射弁 |
CN201580037759.XA CN106489023A (zh) | 2014-09-18 | 2015-05-26 | 燃料喷射阀 |
PCT/JP2015/065002 WO2016042847A1 (ja) | 2014-09-18 | 2015-05-26 | 燃料噴射弁 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014189693A JP6412379B2 (ja) | 2014-09-18 | 2014-09-18 | 燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016061220A JP2016061220A (ja) | 2016-04-25 |
JP6412379B2 true JP6412379B2 (ja) | 2018-10-24 |
Family
ID=55532892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014189693A Active JP6412379B2 (ja) | 2014-09-18 | 2014-09-18 | 燃料噴射弁 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP6412379B2 (ja) |
CN (1) | CN106489023A (ja) |
WO (1) | WO2016042847A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107165755A (zh) * | 2017-07-03 | 2017-09-15 | 浙江凯利智控科技有限公司 | 喷油器雾化特性可调节锥体结构 |
JP2020159253A (ja) * | 2019-03-26 | 2020-10-01 | 日立オートモティブシステムズ株式会社 | 燃料噴射弁 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001046919A (ja) * | 1999-08-06 | 2001-02-20 | Denso Corp | 流体噴射ノズル |
US6360960B1 (en) * | 2000-05-17 | 2002-03-26 | Siemens Automotive Corporation | Fuel injector sac volume reducer |
DE10118164B4 (de) * | 2001-04-11 | 2007-02-08 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004060530A1 (de) * | 2004-12-16 | 2006-06-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
JP4079144B2 (ja) * | 2004-12-20 | 2008-04-23 | 株式会社豊田中央研究所 | 燃料噴射弁 |
JP4185045B2 (ja) * | 2004-12-22 | 2008-11-19 | 株式会社日立製作所 | 燃料噴射弁 |
WO2008117459A1 (ja) * | 2007-03-27 | 2008-10-02 | Mitsubishi Electric Corporation | 燃料噴射弁 |
JP2009162239A (ja) * | 2009-04-27 | 2009-07-23 | Nippon Soken Inc | 燃料噴射弁および内燃機関 |
EP2369166B1 (en) * | 2010-03-22 | 2017-12-13 | Delphi International Operations Luxembourg S.à r.l. | Injection nozzle |
JP5821974B2 (ja) * | 2012-02-15 | 2015-11-24 | トヨタ自動車株式会社 | 燃料噴射弁及びこれを備えた燃料噴射装置 |
JP5842728B2 (ja) * | 2012-05-08 | 2016-01-13 | 株式会社日本自動車部品総合研究所 | 燃料噴射弁 |
JP2014066186A (ja) * | 2012-09-26 | 2014-04-17 | Hitachi Automotive Systems Ltd | 燃料噴射弁 |
JP2014077385A (ja) * | 2012-10-10 | 2014-05-01 | Toyota Motor Corp | 燃料噴射弁 |
-
2014
- 2014-09-18 JP JP2014189693A patent/JP6412379B2/ja active Active
-
2015
- 2015-05-26 CN CN201580037759.XA patent/CN106489023A/zh active Pending
- 2015-05-26 WO PCT/JP2015/065002 patent/WO2016042847A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2016061220A (ja) | 2016-04-25 |
CN106489023A (zh) | 2017-03-08 |
WO2016042847A1 (ja) | 2016-03-24 |
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