JP4245639B2 - 内燃機関の燃料噴射弁 - Google Patents
内燃機関の燃料噴射弁 Download PDFInfo
- Publication number
- JP4245639B2 JP4245639B2 JP2007106052A JP2007106052A JP4245639B2 JP 4245639 B2 JP4245639 B2 JP 4245639B2 JP 2007106052 A JP2007106052 A JP 2007106052A JP 2007106052 A JP2007106052 A JP 2007106052A JP 4245639 B2 JP4245639 B2 JP 4245639B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- valve
- pressure
- flow rate
- inflow
- 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
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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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
-
- 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
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
Description
第1の発明によれば、制御室に流入する燃料流量又は制御室から流出する燃料流量が燃料供給源のコモンレール圧に基づいて変更せしめられる。ここで、コモンレール圧は機関負荷・機関回転数に応じて、すなわち機関運転状態に応じて変更される。したがって、第1の発明では、機関運転状態に応じて制御室に流入・流出する燃料流量が変更せしめられ、よって機関運転状態に応じて燃料噴射率の変更速度が変更せしめられる。
なお、上記「ニードル弁の上昇中」とは、二つのニードル弁のうち少なくともいずれか一方が上昇している状態を意味する。
2、40、50、60 燃料噴射弁
3 燃料タンク
11 ノズルボディ
12 内側ニードル弁
13 外側ニードル弁
14 内側噴孔群
15 外側噴孔群
16 ノズル室
20 圧力制御室
23 制御弁
32 自動弁
Claims (7)
- 第一噴孔群及び第二噴孔群と、制御室と、第一ニードル弁及び第二ニードル弁とを具備し、上記第一ニードル弁が上記第一噴孔群の噴孔を開閉し、上記第二ニードル弁が上記第二噴孔群の噴孔を開閉し、上記第一ニードル弁及び上記第二ニードル弁のリフトは上記制御室内の燃料の圧力により制御せしめられる燃料噴射弁において、
上記制御室に流入する燃料流量又は該制御室から流出する燃料流量を変更する流入・流出流量変更手段をさらに具備し、該流入・流出流量変更手段による燃料流量の変更制御は燃料供給源のコモンレール圧に基づいて行われることを特徴とする、燃料噴射弁。 - 第一噴孔群及び第二噴孔群と、制御室と、ニードル弁とを具備し、
上記ニードル弁のリフト量が所定量以下のときには上記第一噴孔群の噴孔のみが開放され、上記ニードル弁のリフト量が所定量よりも大きいときには上記第一噴孔群の噴孔に加えて上記第二噴孔群の噴孔が開放せしめられる燃料噴射弁において、
上記制御室に流入する燃料流量又は該制御室から流出する燃料流量を変更する流入・流出流量変更手段をさらに具備し、該流入・流出流量変更手段による燃料流量の変更制御は燃料供給源のコモンレール圧に基づいて行われることを特徴とする、燃料噴射弁。 - 上記流入・流出流量変更手段は上記燃料供給源のコモンレール圧が低くなると上記制御室内の燃料量の減少速度が遅くなるように燃料流量を変更することを特徴とする、請求項1又は2に記載の燃料噴射弁。
- 上記流入・流出流量変更手段は、上記燃料供給源及び上記制御室に連通する燃料流入通路と、該燃料流入通路を通って流れる燃料の流量を調整可能な流量制御弁とを具備し、上記燃料供給源のコモンレール圧が所定圧力以上であるときには上記流量制御弁が上記燃料流入通路を遮断すると共にコモンレール圧が所定圧力よりも低いときには上記流量制御弁が上記燃料流入通路を全開にすることを特徴とする、請求項3に記載の燃料噴射弁。
- 上記流入・流出流量変更手段は上記ニードル弁の上昇初期における上記制御室内の燃料量の減少速度が上記ニードル弁の上昇後期における減少速度よりも遅くなるように燃料流量を変更することを特徴とする、請求項1〜4のいずれか1項に記載の燃料噴射弁。
- 上記流入・流出流量変更手段は、上記燃料供給源及び上記制御室に連通する燃料流入通路と、該燃料流入通路を通って流れる燃料の流量を調整可能な流量制御弁とを具備し、上記ニードル弁上昇初期には該流量制御弁が燃料流入通路を遮断すると共に上記ニードル弁上昇後期には該流量制御弁が燃料流入通路を全開にすることを特徴とする、請求項5に記載の燃料噴射弁。
- 上記流入・流出流量変更手段は、燃料回収部及び上記制御室に連通する燃料流出通路と、該燃料流出通路を通って流れる燃料の流量を調整可能な流量制御弁とを具備し、上記ニードル弁上昇初期には該流量制御弁が燃料流出通路を遮断すると共に上記ニードル弁上昇後期には該流量制御弁が燃料流出通路を全開にすることを特徴とする、請求項5に記載の燃料噴射弁。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007106052A JP4245639B2 (ja) | 2007-04-13 | 2007-04-13 | 内燃機関の燃料噴射弁 |
US12/595,709 US20100133361A1 (en) | 2007-04-13 | 2008-04-03 | Fuel injection valve for internal combustion engine |
PCT/IB2008/000799 WO2008125934A1 (en) | 2007-04-13 | 2008-04-03 | Fuel injection valve for internal combustion engine |
CN2008800119634A CN101657630B (zh) | 2007-04-13 | 2008-04-03 | 用于内燃机的燃料喷射阀 |
EP08737377A EP2134953B1 (en) | 2007-04-13 | 2008-04-03 | Fuel injection valve for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007106052A JP4245639B2 (ja) | 2007-04-13 | 2007-04-13 | 内燃機関の燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008261309A JP2008261309A (ja) | 2008-10-30 |
JP4245639B2 true JP4245639B2 (ja) | 2009-03-25 |
Family
ID=39717779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007106052A Expired - Fee Related JP4245639B2 (ja) | 2007-04-13 | 2007-04-13 | 内燃機関の燃料噴射弁 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100133361A1 (ja) |
EP (1) | EP2134953B1 (ja) |
JP (1) | JP4245639B2 (ja) |
CN (1) | CN101657630B (ja) |
WO (1) | WO2008125934A1 (ja) |
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JP4331225B2 (ja) * | 2007-04-10 | 2009-09-16 | トヨタ自動車株式会社 | 内燃機関の燃料噴射制御装置 |
KR101058713B1 (ko) | 2010-03-08 | 2011-08-22 | 현대중공업 주식회사 | 솔레노이드밸브와 셔틀밸브를 가진 디젤엔진용 2단 연료분사밸브 |
KR101116504B1 (ko) * | 2010-04-21 | 2012-02-28 | 현대중공업 주식회사 | 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 |
US10982635B2 (en) * | 2012-05-29 | 2021-04-20 | Delphi Technologies Ip Limited | Fuel injector and method for controlling the same |
EP2669503A1 (en) * | 2012-05-29 | 2013-12-04 | Delphi Technologies Holding S.à.r.l. | Fuel Injector |
EP2674608B1 (en) * | 2012-06-13 | 2015-08-12 | Delphi International Operations Luxembourg S.à r.l. | Fuel injector |
CN103362710A (zh) * | 2013-03-26 | 2013-10-23 | 哈尔滨工程大学 | 可变喷孔式电控喷油器 |
GB201309122D0 (en) * | 2013-05-21 | 2013-07-03 | Delphi Tech Holding Sarl | Fuel Injector |
US9562505B2 (en) * | 2013-06-11 | 2017-02-07 | Cummins Inc. | System and method for control of fuel injector spray |
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US9915215B2 (en) * | 2016-04-28 | 2018-03-13 | Caterpillar Inc. | Fuel injector for pulsed injections and system and method thereof |
CN106014739B (zh) * | 2016-05-25 | 2018-05-18 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | 一种喷油嘴 |
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-
2007
- 2007-04-13 JP JP2007106052A patent/JP4245639B2/ja not_active Expired - Fee Related
-
2008
- 2008-04-03 US US12/595,709 patent/US20100133361A1/en not_active Abandoned
- 2008-04-03 CN CN2008800119634A patent/CN101657630B/zh not_active Expired - Fee Related
- 2008-04-03 WO PCT/IB2008/000799 patent/WO2008125934A1/en active Application Filing
- 2008-04-03 EP EP08737377A patent/EP2134953B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008261309A (ja) | 2008-10-30 |
CN101657630A (zh) | 2010-02-24 |
EP2134953B1 (en) | 2012-01-25 |
US20100133361A1 (en) | 2010-06-03 |
CN101657630B (zh) | 2011-12-14 |
WO2008125934A1 (en) | 2008-10-23 |
EP2134953A1 (en) | 2009-12-23 |
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