JP4542135B2 - 2系統燃料噴射式内燃機関 - Google Patents
2系統燃料噴射式内燃機関 Download PDFInfo
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- JP4542135B2 JP4542135B2 JP2007509195A JP2007509195A JP4542135B2 JP 4542135 B2 JP4542135 B2 JP 4542135B2 JP 2007509195 A JP2007509195 A JP 2007509195A JP 2007509195 A JP2007509195 A JP 2007509195A JP 4542135 B2 JP4542135 B2 JP 4542135B2
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- fuel
- delivery pipe
- injection
- injector
- pressure
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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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- 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
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- 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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel 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
- 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
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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
- 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
- F02M63/023—Means for varying pressure in common rails
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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
- 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
- F02M63/0275—Arrangement of common rails
- F02M63/028—Returnless common rail system
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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
- 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
- F02M63/0275—Arrangement of common rails
- F02M63/0285—Arrangement of common rails having more than one common rail
- F02M63/029—Arrangement of common rails having more than one common rail per cylinder bank, e.g. storing different fuels or fuels at different pressure levels per cylinder bank
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
- F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
-
- 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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into 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
- 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
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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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
また、請求項1に記載の発明によれば、燃料調整手段が、第1の流量制御弁と第2の流量制御弁とを有する。そのため、筒内噴射デリバリパイプ内に滞留する燃料が内燃機関からの伝熱により高圧化、高温化するのを、第1の流量制限弁の開弁と第2の流量制限弁の開弁により、筒内噴射デリバリパイプ内に燃料を循環させて回避することができる。従って、筒内噴射デリバリパイプ内の燃料として、常に適圧、適温の状態のものを確保しておくことができる。
さらに、請求項1に記載の発明によれば、吸気管噴射インジェクタの噴き分け比率が100%の時に、燃料の筒内噴射デリバリパイプへの供給を停止させるべく、第1の流量制御弁が作動し、又、筒内噴射デリバリパイプ内の燃料圧力と燃料温度の少なくともどちらか一方が目標値を上まわった時に筒内噴射デリバリパイプ内に燃料を循環させるべく、第2の流量制御弁が作動する。そのため、吸気管噴射インジェクタの噴き分け比率が100%の際には、第1の流量制御弁が閉弁して、筒内噴射デリバリパイプ内の燃料の循環を停止させることができると共に、燃料圧力又は燃料温度のいずれか一方が目標値を上まわると、筒内噴射デリバリパイプ内の燃料が循環して、新たな燃料が流入する。従って、筒内噴射デリバリパイプ内の燃料として、定常状態のものを常に確保することができる。
また、請求項2に記載の発明によれば、燃料調整手段が、第1の流量制御弁と第2の流量制御弁とを有する。そのため、筒内噴射デリバリパイプ内に滞留する燃料が内燃機関からの伝熱により高圧化、高温化するのを、第1の流量制限弁の開弁と第2の流量制限弁の開弁により、筒内噴射デリバリパイプ内に燃料を循環させて回避することができる。従って、筒内噴射デリバリパイプ内の燃料として、常に適圧、適温の状態のものを確保しておくことができる。
さらに、請求項2に記載の発明によれば、第2の流量制御弁が、電磁リリーフ弁である。そのため、機械的なリリーフ弁に比較して、精密な開閉制御が行い易い。従って、電磁リリーフ弁を開いた状態にすると、高圧又は高温となった筒内噴射デリバリパイプ内の燃料が、放出され、電磁リリーフ弁を閉じた状態にすると、新たな定常状態の燃料が、筒内噴射デリバリパイプ内に導入されて滞留できる。
15 DIインジェクタ(筒内噴射インジェクタ)
16 PFIインジェクタ(吸気管噴射インジェクタ)
23 DIデリバリパイプ(筒内噴射デリバリパイプ)
24 PFIデリバリパイプ(吸気管噴射デリバリパイプ)
26 DI配管(筒内噴射配管)
27 PFI配管(吸気管噴射配管)
28 燃料タンク
31 フューエルポンプ
32 高圧燃料ポンプ
35 ECU(制御手段)
36 燃料圧力センサ(燃料圧力検出手段)
37 燃料温度センサ(燃料温度検出手段)
38 エンジン回転数センサ
39 エンジン負荷センサ
41 アクチュエータ
43 高圧燃料ポンプ流量制御弁(第1の流量制御弁)(燃料調整手段)
44 電磁リリーフ弁(第2の流量制御弁)(燃料調整手段)
Claims (3)
- 筒内噴射インジェクタと吸気管噴射インジェクタと、
運転条件に応じて前記各インジェクタから噴射される燃料の比率としての噴き分け比率を変化させる制御手段と、
前記筒内噴射インジェクタに燃料を供給する筒内噴射デリバリパイプに燃料を圧送する高圧燃料ポンプと、
前記筒内噴射デリバリパイプ内の燃料圧力と燃料温度とをそれぞれ個別に検出する燃料圧力検出手段及び燃料温度検出手段と、
前記筒内噴射デリバリパイプ内の燃料圧力と燃料温度を調整する燃料調整手段とを有し、
前記制御手段は、前記吸気管噴射インジェクタの前記噴き分け比率が高く、かつ、前記各検出手段によって検出された前記筒内噴射デリバリパイプ内の燃料圧力と燃料温度の少なくともどちらか一方が目標値を上まわった時に、前記燃料調整手段によりその値を低下させる制御を行ない、
前記燃料調整手段が、燃料タンクから前記筒内噴射デリバリパイプに燃料を送る流路中に設けられた第1の流量制御弁と、前記筒内噴射デリバリパイプ内の燃料を燃料タンクへと戻す流路中に設けられた第2の流量制御弁とを備え、
前記高圧燃料ポンプは、前記吸気管噴射インジェクタの噴き分け比率が100%の時にも作動しており、その際、制御手段により、燃料の前記筒内噴射デリバリパイプへの供給を停止すべく前記第1の流量制御弁を作動させ、前記筒内噴射デリバリパイプ内の燃料圧力と燃料温度の少なくともどちらか一方が目標値を上まわった時に、前記第1の流量制御弁を作動させるとともに、前記第2の流量制御弁を作動させて前記筒内噴射デリバリパイプ内に燃料を循環させる、
ことを特徴とする2系統燃料噴射式内燃機関。 - 前記第2の流量制御弁が、電磁リリーフ弁であることを特徴とする請求項1に記載の2系統燃料噴射式内燃機関。
- 前記制御手段は、前記吸気管噴射インジェクタの前記噴き分け比率が100%の場合を含んで、その近傍である場合に、前記吸気管噴射インジェクタの前記噴き分け比率が高いと判断して前記燃料調整手段を制御することを特徴とする請求項1または2に記載の2系統燃料噴射式内燃機関。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005080697 | 2005-03-18 | ||
JP2005080697 | 2005-03-18 | ||
PCT/JP2006/304711 WO2006100938A1 (ja) | 2005-03-18 | 2006-03-10 | 2系統燃料噴射式内燃機関 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2006100938A1 JPWO2006100938A1 (ja) | 2008-09-04 |
JP4542135B2 true JP4542135B2 (ja) | 2010-09-08 |
Family
ID=37009008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007509195A Expired - Fee Related JP4542135B2 (ja) | 2005-03-18 | 2006-03-10 | 2系統燃料噴射式内燃機関 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7281517B2 (ja) |
EP (1) | EP1860318B1 (ja) |
JP (1) | JP4542135B2 (ja) |
CN (1) | CN101115921B (ja) |
WO (1) | WO2006100938A1 (ja) |
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JP4976318B2 (ja) * | 2008-01-30 | 2012-07-18 | 日立オートモティブシステムズ株式会社 | 内燃機関の燃料噴射装置 |
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JP5379648B2 (ja) * | 2009-10-29 | 2013-12-25 | 日立オートモティブシステムズ株式会社 | エンジンの制御装置 |
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JP5573504B2 (ja) * | 2010-08-31 | 2014-08-20 | トヨタ自動車株式会社 | 内燃機関燃料噴射制御装置 |
JP5672180B2 (ja) * | 2011-07-12 | 2015-02-18 | トヨタ自動車株式会社 | 燃料供給システムの制御装置 |
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US20060207568A1 (en) | 2006-09-21 |
WO2006100938A1 (ja) | 2006-09-28 |
US7281517B2 (en) | 2007-10-16 |
EP1860318B1 (en) | 2019-02-20 |
EP1860318A4 (en) | 2015-03-04 |
CN101115921A (zh) | 2008-01-30 |
JPWO2006100938A1 (ja) | 2008-09-04 |
EP1860318A1 (en) | 2007-11-28 |
CN101115921B (zh) | 2011-08-31 |
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