JP4508130B2 - 燃料噴射装置 - Google Patents
燃料噴射装置 Download PDFInfo
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- JP4508130B2 JP4508130B2 JP2006046744A JP2006046744A JP4508130B2 JP 4508130 B2 JP4508130 B2 JP 4508130B2 JP 2006046744 A JP2006046744 A JP 2006046744A JP 2006046744 A JP2006046744 A JP 2006046744A JP 4508130 B2 JP4508130 B2 JP 4508130B2
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- Prior art keywords
- pressure
- fuel
- injector
- low
- flow path
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
-
- 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
- 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
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0606—Fuel temperature
-
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
Description
上記高圧インジェクタは、上記ニードル弁の閉弁方向に上記背圧室の圧力が作用し、上記ニードル弁の開弁方向に上記高圧燃料流路の圧力が作用しており、上記背圧室の燃料が上記燃料戻し通路から排出されて閉弁方向の圧力が低下することにより上記ニードル弁が開弁する構成であり、上記高圧インジェクタには、上記背圧室の燃料を低圧部へ排出するための燃料戻し流路が接続されるとともに、上記低圧インジェクタへ燃料を導入する低圧燃料流路に上記燃料戻し流路を接続し、この燃料戻し流路を所定の圧力に維持する戻し流路圧設定手段と、エンジンの運転状態に応じて、上記高圧インジェクタおよび上記低圧インジェクタの少なくとも一方を駆動し、エンジン筒内に供給される燃料量を調整する制御手段とを設ける。
そして、上記制御手段は、低温始動時で上記高圧燃料流路の圧力が設定圧力より低い時には、上記低圧インジェクタを選択し、低温始動時で上記高圧燃料流路の圧力が設定圧力以上の時には、上記高圧インジェクタを選択するように設定してあり、上記制御手段において、上記設定圧力は、上記高圧インジェクタの上記ニードル弁を開弁作動可能な限界圧力であることを特徴とする。
制御手段は、通常運転時には、高圧インジェクタを駆動し、例えば、低温始動時で高圧燃料流路の圧力が十分高くないと判断される場合には、低圧インジェクタを駆動する。あるいは、必要に応じて、高圧インジェクタからの噴射量に加え、低圧インジェクタから燃料を追加供給することができる。このように、高圧インジェクタおよび低圧インジェクタの少なくとも一方を駆動することにより、必要な燃料をエンジン筒内への噴射を確実に噴射供給することができる。よって、燃料の気化による作動不良や燃料蒸気による大気汚染を抑制しながら、インジェクタの小型化、高燃料噴射圧が可能であり、高出力で低燃費な燃料噴射装置を実現することができる。
H1 ノズルホルダ
H2 ホルダ
V1 電磁弁
1 エンジン
11 吸気管
12 スロットル
13 燃料タンク
2 低圧ポンプ(戻し流路圧設定手段)
21、22 低圧燃料流路
23 燃料戻し流路
3 高圧ポンプ
31 エンジン駆動軸
32 吸入調量弁
33 加圧室
4 コモンレール
41 コモンレール圧力センサ
42 圧力調整弁
43 高圧燃料流路
5 高圧インジェクタ
501 燃料噴射孔
502 インレット部
503 アウトレット部
504 ニードル弁
507 背圧室
511 流路
512 燃料戻し流路
513 弁部
517 ソレノイド
6 低圧インジェクタ
601 燃料流路
602 噴射プレート
603 弁座プレート
604 燃料噴射孔
610 燃料流路
611 インレット部
614 ソレノイド
7 ECU(制御手段)
71 EDU
8 回転数センサ
9 エンジン水温センサ
Claims (4)
- 燃料を加圧して高圧燃料流路に圧送する高圧ポンプと、上記高圧燃料流路に連通する背圧室の圧力を制御することによりニードル弁を昇降させて上記高圧燃料流路から供給される高圧の燃料を噴射する高圧インジェクタと、該高圧インジェクタよりも低圧力の燃料を噴射する低圧インジェクタを備える燃料噴射装置において、
上記高圧インジェクタは、上記ニードル弁の閉弁方向に上記背圧室の圧力が作用し、上記ニードル弁の開弁方向に上記高圧燃料流路の圧力が作用しており、上記背圧室の燃料が上記燃料戻し通路から排出されて閉弁方向の圧力が低下することにより上記ニードル弁が開弁する構成であり、
上記高圧インジェクタに上記背圧室の燃料を低圧部に排出するための燃料戻し流路を接続するとともに、上記低圧インジェクタへ燃料を導入する低圧燃料流路に上記燃料戻し流路を接続し、上記燃料戻し流路を所定の圧力に維持する戻し流路圧設定手段と、エンジンの運転状態に応じて、上記高圧インジェクタおよび上記低圧インジェクタの少なくとも一方を駆動し、エンジン筒内に供給される燃料量を調整する制御手段とを設け、
上記制御手段は、低温始動時で上記高圧燃料流路の圧力が設定圧力より低い時には、上記低圧インジェクタを選択し、低温始動時で上記高圧燃料流路の圧力が設定圧力以上の時には、上記高圧インジェクタを選択するものであり、上記制御手段において、上記設定圧力は、上記高圧インジェクタの上記ニードル弁を開弁作動可能な限界圧力であることを特徴とする燃料噴射装置。 - 上記燃料はガソリンであり、上記所定の圧力は、ガソリンの低圧沸騰を抑制できる圧力に設定される請求項1記載の燃料噴射装置。
- 上記戻し流路圧設定手段は、上記燃料戻し流路を上記所定の圧力に維持するように上記低圧燃料流路に燃料を加圧圧送する低圧ポンプを備える請求項1または2記載の燃料噴射装置。
- 上記制御手段は、低温始動時でない時には、上記高圧インジェクタを選択する請求項1ないし3のいずれか記載の燃料噴射装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006046744A JP4508130B2 (ja) | 2006-02-23 | 2006-02-23 | 燃料噴射装置 |
DE102007000105A DE102007000105A1 (de) | 2006-02-23 | 2007-02-21 | Kraftstoffeinspritzgerät und Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006046744A JP4508130B2 (ja) | 2006-02-23 | 2006-02-23 | 燃料噴射装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007224812A JP2007224812A (ja) | 2007-09-06 |
JP4508130B2 true JP4508130B2 (ja) | 2010-07-21 |
Family
ID=38320015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006046744A Active JP4508130B2 (ja) | 2006-02-23 | 2006-02-23 | 燃料噴射装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4508130B2 (ja) |
DE (1) | DE102007000105A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010024989A (ja) * | 2008-07-18 | 2010-02-04 | Mitsubishi Motors Corp | 車両の燃料供給装置 |
JP4661930B2 (ja) * | 2008-09-19 | 2011-03-30 | トヨタ自動車株式会社 | 内燃機関の燃料供給装置 |
JP5056729B2 (ja) * | 2008-11-13 | 2012-10-24 | トヨタ自動車株式会社 | 内燃機関の燃料供給装置 |
CN106150733B (zh) * | 2015-03-27 | 2019-05-31 | 长城汽车股份有限公司 | 双燃料发动机的控制方法、装置和具有该装置的汽车 |
JP2017075580A (ja) * | 2015-10-16 | 2017-04-20 | 株式会社デンソー | 車両の燃料噴射装置及び制御装置 |
JP6544206B2 (ja) * | 2015-11-05 | 2019-07-17 | 株式会社デンソー | 燃料噴射装置 |
KR102452468B1 (ko) * | 2017-12-19 | 2022-10-12 | 현대자동차주식회사 | 엔진의 펌핑인젝터 |
JP7066820B2 (ja) * | 2020-12-22 | 2022-05-13 | ヤンマーパワーテクノロジー株式会社 | エンジン装置 |
KR102445166B1 (ko) * | 2022-06-30 | 2022-09-20 | 카디브(주) | 펌핑인젝터와 일반인젝터 겸용 측정장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11182371A (ja) * | 1997-12-19 | 1999-07-06 | Unisia Jecs Corp | 内燃機関の燃料供給装置 |
JP2005076543A (ja) * | 2003-09-01 | 2005-03-24 | Denso Corp | 内燃機関用燃料噴射装置 |
JP2005090392A (ja) * | 2003-09-18 | 2005-04-07 | Nissan Diesel Motor Co Ltd | 内燃機関の燃料噴射装置 |
JP2006046172A (ja) * | 2004-08-04 | 2006-02-16 | Toyota Motor Corp | 内燃機関の制御装置 |
-
2006
- 2006-02-23 JP JP2006046744A patent/JP4508130B2/ja active Active
-
2007
- 2007-02-21 DE DE102007000105A patent/DE102007000105A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11182371A (ja) * | 1997-12-19 | 1999-07-06 | Unisia Jecs Corp | 内燃機関の燃料供給装置 |
JP2005076543A (ja) * | 2003-09-01 | 2005-03-24 | Denso Corp | 内燃機関用燃料噴射装置 |
JP2005090392A (ja) * | 2003-09-18 | 2005-04-07 | Nissan Diesel Motor Co Ltd | 内燃機関の燃料噴射装置 |
JP2006046172A (ja) * | 2004-08-04 | 2006-02-16 | Toyota Motor Corp | 内燃機関の制御装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102007000105A1 (de) | 2007-08-30 |
JP2007224812A (ja) | 2007-09-06 |
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