JP4119812B2 - 燃料噴射弁 - Google Patents
燃料噴射弁 Download PDFInfo
- Publication number
- JP4119812B2 JP4119812B2 JP2003327214A JP2003327214A JP4119812B2 JP 4119812 B2 JP4119812 B2 JP 4119812B2 JP 2003327214 A JP2003327214 A JP 2003327214A JP 2003327214 A JP2003327214 A JP 2003327214A JP 4119812 B2 JP4119812 B2 JP 4119812B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- guide hole
- fuel
- hole
- fuel injection
- 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.)
- Expired - Fee Related
Links
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
- 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
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/07—Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
2 ノズルホルダ
3 ノズル
5 電磁弁
21 案内孔
22 中空体
23 プレッシャーピン
24 ばね室
25 弾発ばね
26 通路
31 ノズルボディー
32 ノズルニードル
32A 先端部
33 貫通孔
33A 一端部
33B テーパ部
33D 非テーパ部
34 シリンダ部
35 噴孔
36 通路
37 油だまり
G 隙間
W 幅
Claims (2)
- ノズルボディ内の案内孔に挿通されたノズルニードルが該案内孔によって案内されて軸方向に運動し噴孔の開閉を行うように構成されたノズルがノズルホルダの先端部に固定されて成ると共に、前記案内孔の一端側に高圧燃料の油だまりが形成されている内燃機関用燃料噴射弁において、
前記ノズルニードルと前記案内孔との間に形成される隙間が、前記案内孔の前記一端側から前記案内孔の他端側までの全てにわたって前記ノズルホルダに向かって拡がるテーパ状となっていることを特徴とする内燃機関用燃料噴射弁。 - ノズルボディ内の案内孔に挿通されたノズルニードルが該案内孔によって案内されて軸方向に運動し噴孔の開閉を行うように構成されたノズルがノズルホルダの先端部に固定されて成ると共に、前記案内孔の一端側に高圧燃料の油だまりが形成されている内燃機関用燃料噴射弁において、
前記ノズルニードルと前記案内孔との間に形成される隙間が、前記案内孔の前記一端側から前記ノズルホルダに向かって拡がるテーパ状間隙となっており、前記高圧燃料の油だまりに生じた固形物を該テーパ状間隙を通して前記案内孔の他端から逃がすようにしたことを特徴とする内燃機関用燃料噴射弁。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003327214A JP4119812B2 (ja) | 2003-09-19 | 2003-09-19 | 燃料噴射弁 |
EP04772977A EP1666720B1 (en) | 2003-09-19 | 2004-09-07 | Fuel injection valve for internal combustion engine |
KR1020067005465A KR100730862B1 (ko) | 2003-09-19 | 2004-09-07 | 내연기관용 연료 분사 밸브 |
PCT/JP2004/013295 WO2005028853A1 (ja) | 2003-09-19 | 2004-09-07 | 内燃機関用燃料噴射弁 |
CNB2004800269667A CN100480505C (zh) | 2003-09-19 | 2004-09-07 | 用于内燃机的燃料喷射阀 |
US10/572,550 US20070272771A1 (en) | 2003-09-19 | 2004-09-07 | Fuel Injection Valve For Internal Combustion Engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003327214A JP4119812B2 (ja) | 2003-09-19 | 2003-09-19 | 燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005090421A JP2005090421A (ja) | 2005-04-07 |
JP4119812B2 true JP4119812B2 (ja) | 2008-07-16 |
Family
ID=34372862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003327214A Expired - Fee Related JP4119812B2 (ja) | 2003-09-19 | 2003-09-19 | 燃料噴射弁 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070272771A1 (ja) |
EP (1) | EP1666720B1 (ja) |
JP (1) | JP4119812B2 (ja) |
KR (1) | KR100730862B1 (ja) |
CN (1) | CN100480505C (ja) |
WO (1) | WO2005028853A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4066959B2 (ja) | 2004-01-27 | 2008-03-26 | 株式会社デンソー | 燃料噴射装置 |
DE102006053128A1 (de) * | 2006-11-10 | 2008-05-15 | Robert Bosch Gmbh | Injektor zum Einpritzen von Kraftstoff |
JP2011185264A (ja) * | 2010-02-11 | 2011-09-22 | Denso Corp | インジェクタ |
US8602319B2 (en) * | 2010-10-07 | 2013-12-10 | Caterpillar Inc. | Needle valve member with frustoconical guide segment and fuel injector using same |
DE102010042688A1 (de) * | 2010-10-20 | 2012-04-26 | Robert Bosch Gmbh | Kraftstoffinjektor |
DE102011003452A1 (de) * | 2011-02-01 | 2012-08-02 | Robert Bosch Gmbh | Kraftstoffeinspritzkomponente |
AT512893B1 (de) * | 2013-02-05 | 2013-12-15 | Bosch Gmbh Robert | Bauelement mit ineinandermündenden Hochdruckbohrungen |
JP2020051368A (ja) * | 2018-09-27 | 2020-04-02 | 日立建機株式会社 | 燃料噴射装置及び作業機械 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59130070U (ja) * | 1983-02-18 | 1984-08-31 | ダイハツ工業株式会社 | 内燃機関の燃料噴射弁 |
GB8318634D0 (en) * | 1983-07-09 | 1983-08-10 | Lucas Ind Plc | Fuel injection nozzles |
CN85102659B (zh) * | 1985-04-01 | 1986-11-12 | 大连工学院 | 多孔喷油嘴 |
JP2929713B2 (ja) * | 1990-11-28 | 1999-08-03 | 株式会社デンソー | 燃料噴射弁 |
CN2091361U (zh) * | 1991-05-21 | 1991-12-25 | 梁少平 | 一种用于柴油机直喷燃烧室的喷油嘴 |
JPH07103106A (ja) * | 1993-09-30 | 1995-04-18 | Hino Motors Ltd | 燃料噴射装置 |
DE29504608U1 (de) * | 1995-03-17 | 1996-07-11 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10102234A1 (de) * | 2001-01-19 | 2002-07-25 | Bosch Gmbh Robert | Vorrichtung zur Kraftstoff-Hochdruckversorgung einer Brennkraftmaschine |
DE10147792C2 (de) * | 2001-09-27 | 2003-10-16 | Siemens Ag | Kraftstoffeinspritzventil |
JP3969247B2 (ja) * | 2001-11-06 | 2007-09-05 | 株式会社デンソー | 燃料噴射弁 |
JP4066959B2 (ja) * | 2004-01-27 | 2008-03-26 | 株式会社デンソー | 燃料噴射装置 |
-
2003
- 2003-09-19 JP JP2003327214A patent/JP4119812B2/ja not_active Expired - Fee Related
-
2004
- 2004-09-07 US US10/572,550 patent/US20070272771A1/en not_active Abandoned
- 2004-09-07 EP EP04772977A patent/EP1666720B1/en not_active Expired - Fee Related
- 2004-09-07 WO PCT/JP2004/013295 patent/WO2005028853A1/ja active Application Filing
- 2004-09-07 KR KR1020067005465A patent/KR100730862B1/ko not_active IP Right Cessation
- 2004-09-07 CN CNB2004800269667A patent/CN100480505C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20060030123A (ko) | 2006-04-07 |
EP1666720A1 (en) | 2006-06-07 |
EP1666720A4 (en) | 2010-08-04 |
JP2005090421A (ja) | 2005-04-07 |
WO2005028853A1 (ja) | 2005-03-31 |
KR100730862B1 (ko) | 2007-06-20 |
EP1666720B1 (en) | 2012-07-18 |
US20070272771A1 (en) | 2007-11-29 |
CN100480505C (zh) | 2009-04-22 |
CN1853042A (zh) | 2006-10-25 |
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