JP6384366B2 - 燃料噴射装置 - Google Patents
燃料噴射装置 Download PDFInfo
- Publication number
- JP6384366B2 JP6384366B2 JP2015046184A JP2015046184A JP6384366B2 JP 6384366 B2 JP6384366 B2 JP 6384366B2 JP 2015046184 A JP2015046184 A JP 2015046184A JP 2015046184 A JP2015046184 A JP 2015046184A JP 6384366 B2 JP6384366 B2 JP 6384366B2
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- Prior art keywords
- fuel
- outer peripheral
- injection device
- passage
- valve
- 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
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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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
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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
- 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
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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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
-
- 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
- F02M55/004—Joints; Sealings
-
- 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
- F02M55/007—Venting 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/008—Arrangement of fuel passages inside of 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
- F02M61/04—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
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/708—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with hydraulic chambers formed by a movable sleeve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Description
以上、本発明による一実施形態について説明したが、本発明は、上記実施形態に限定して解釈されるものではなく、本発明の要旨を逸脱しない範囲内において種々の実施形態及び組み合わせに適用することができる。
Claims (8)
- 内燃機関(20)の燃焼室(22)に供給される燃料を噴孔(44)から噴射する燃料噴射装置であって、
前記噴孔に燃料を流通させる燃料通路(55)及び前記燃料通路に臨むシート部(45,145)が形成される弁本体(41,141)と、
前記弁本体の内部において当該弁本体の軸方向に沿って移動し、前記シート部に対して離着座することで前記噴孔を開閉する弁部材(60)と、
前記弁部材を挟んで前記噴孔の反対側に位置し、導入される燃料の圧力によって前記弁部材の移動を制御する圧力制御室(53)、を区画する区画部材(56)と、
前記区画部材の外周側を囲み、前記燃料通路を前記弁本体と共に形成する外周部材(80,180)と、を備え、
前記外周部材には、前記燃料通路の外周側に位置し、当該外周部材と前記弁本体との間に前記燃料通路から漏れ出る燃料を回収する回収通路(81)、が形成されていることを特徴とする燃料噴射装置。 - 前記外周部材は、前記燃料通路の外周側を囲む円筒状の外周壁(80a)を有し、
前記外周壁の軸方向の長さは、前記外周壁の外径よりも短いことを特徴とする請求項1に記載の燃料噴射装置。 - 前記弁本体は、前記弁部材を収容する円筒穴状の前記燃料通路を形成し、
前記外周壁の内径は、前記弁本体の内径と実質的に同一であることを特徴とする請求項2に記載の燃料噴射装置。 - 前記外周壁の壁厚は、前記弁本体において前記燃料通路を囲む周壁部(43a)の壁厚と実質的に同一であることを特徴とする請求項2又は3に記載の燃料噴射装置。
- 前記弁部材は、前記シート部から離れる方向への予め設定された最大ストローク以下の移動により、前記噴孔からの燃料の噴射を開始させ、
前記区画部材は、前記最大ストローク(ST)を超える前記弁部材の移動を規制する規制部(57)、を有することを特徴とする請求項1〜4のいずれか一項に記載の燃料噴射装置。 - 前記外周部材を挟んで前記弁本体の反対側に位置し、前記圧力制御室に燃料を流入させる流入口(52a)を形成するオリフィス部材(46)と、
前記圧力制御室内に配置され、当該圧力制御室内の燃料の圧力によって前記オリフィス部材に押し付けられることで、前記流入口から前記圧力制御室への燃料の流入を妨げる押圧部材(70)と、をさらに備えることを特徴とする請求項1〜5のいずれか一項に記載の燃料噴射装置。 - 前記区画部材は、前記弁部材の移動方向に沿った長さが互いに異なる複数種類の中から選択された一つであることを特徴とする請求項1〜6のいずれか一項に記載の燃料噴射装置。
- 前記外周部材は、前記移動方向に沿った長さが互いに異なる複数種類の中から選択された一つであり、前記区画部材の長さに対応していることを特徴とする請求項7に記載の燃料噴射装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015046184A JP6384366B2 (ja) | 2015-03-09 | 2015-03-09 | 燃料噴射装置 |
PCT/JP2016/000797 WO2016143264A1 (ja) | 2015-03-09 | 2016-02-16 | 燃料噴射装置 |
US15/523,974 US10151285B2 (en) | 2015-03-09 | 2016-02-16 | Fuel injection device |
CN201680003519.2A CN107110083B (zh) | 2015-03-09 | 2016-02-16 | 燃料喷射装置 |
DE112016001145.8T DE112016001145T5 (de) | 2015-03-09 | 2016-02-16 | Kraftstoffeinspritzvorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015046184A JP6384366B2 (ja) | 2015-03-09 | 2015-03-09 | 燃料噴射装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2016166561A JP2016166561A (ja) | 2016-09-15 |
JP2016166561A5 JP2016166561A5 (ja) | 2017-03-09 |
JP6384366B2 true JP6384366B2 (ja) | 2018-09-05 |
Family
ID=56880344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015046184A Active JP6384366B2 (ja) | 2015-03-09 | 2015-03-09 | 燃料噴射装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10151285B2 (ja) |
JP (1) | JP6384366B2 (ja) |
CN (1) | CN107110083B (ja) |
DE (1) | DE112016001145T5 (ja) |
WO (1) | WO2016143264A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108131230B (zh) * | 2017-12-26 | 2024-03-08 | 南岳电控(衡阳)工业技术股份有限公司 | 一种柴油机高压共轨重型机械喷油器 |
DE102019104294A1 (de) * | 2018-03-15 | 2019-09-19 | Denso Corporation | Korrosionsbeständige Vorrichtung |
JP7024567B2 (ja) * | 2018-04-06 | 2022-02-24 | 株式会社デンソー | 燃料噴射弁 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0765550B2 (ja) * | 1988-10-21 | 1995-07-19 | いすゞ自動車株式会社 | 蓄圧式燃料噴射装置 |
US5779149A (en) * | 1996-07-02 | 1998-07-14 | Siemens Automotive Corporation | Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke |
JP2002031016A (ja) * | 2000-07-21 | 2002-01-31 | Toyota Industries Corp | 燃料噴射器 |
JP3556921B2 (ja) * | 2001-04-27 | 2004-08-25 | 株式会社日本自動車部品総合研究所 | 燃料噴射弁 |
DE10222196A1 (de) * | 2002-05-18 | 2003-11-27 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10229419A1 (de) * | 2002-06-29 | 2004-01-29 | Robert Bosch Gmbh | Druckübersetzter Kraftstoffinjektor mit schnellem Druckabbau bei Einspritzende |
US7398763B2 (en) * | 2005-11-09 | 2008-07-15 | Caterpillar Inc. | Multi-source fuel system for variable pressure injection |
US7963464B2 (en) * | 2008-01-23 | 2011-06-21 | Caterpillar Inc. | Fuel injector and method of assembly therefor |
DE102008002527A1 (de) * | 2008-06-19 | 2009-12-24 | Robert Bosch Gmbh | Kraftstoff-Injektor |
CN101338716B (zh) * | 2008-09-02 | 2013-07-03 | 兰州泰瑞液压设备有限公司 | 新式高压共轨电控喷油器 |
DE102009046582A1 (de) * | 2009-11-10 | 2011-05-12 | Robert Bosch Gmbh | Verfahren zum Herstellen eines Kraftstoffeinspritzventils und Kraftstoffeinspritzventil |
JP5625837B2 (ja) | 2010-03-31 | 2014-11-19 | 株式会社デンソー | 燃料噴射装置 |
JP5375762B2 (ja) * | 2010-07-14 | 2013-12-25 | 株式会社デンソー | 燃料噴射装置 |
JP5304861B2 (ja) | 2010-12-17 | 2013-10-02 | 株式会社デンソー | 燃料噴射装置 |
JP6708366B2 (ja) | 2015-03-09 | 2020-06-10 | 株式会社デンソー | 燃料噴射装置及び燃料噴射装置の製造方法 |
-
2015
- 2015-03-09 JP JP2015046184A patent/JP6384366B2/ja active Active
-
2016
- 2016-02-16 WO PCT/JP2016/000797 patent/WO2016143264A1/ja active Application Filing
- 2016-02-16 DE DE112016001145.8T patent/DE112016001145T5/de not_active Ceased
- 2016-02-16 US US15/523,974 patent/US10151285B2/en active Active
- 2016-02-16 CN CN201680003519.2A patent/CN107110083B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
WO2016143264A1 (ja) | 2016-09-15 |
JP2016166561A (ja) | 2016-09-15 |
CN107110083A (zh) | 2017-08-29 |
US10151285B2 (en) | 2018-12-11 |
CN107110083B (zh) | 2019-05-07 |
US20170356409A1 (en) | 2017-12-14 |
DE112016001145T5 (de) | 2017-11-23 |
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