JP4706623B2 - 内燃機関用燃料噴射装置 - Google Patents
内燃機関用燃料噴射装置 Download PDFInfo
- Publication number
- JP4706623B2 JP4706623B2 JP2006316633A JP2006316633A JP4706623B2 JP 4706623 B2 JP4706623 B2 JP 4706623B2 JP 2006316633 A JP2006316633 A JP 2006316633A JP 2006316633 A JP2006316633 A JP 2006316633A JP 4706623 B2 JP4706623 B2 JP 4706623B2
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- JP
- Japan
- Prior art keywords
- pressure
- accumulator
- learning
- valve
- reducing 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
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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
- F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
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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
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
-
- 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
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (2)
- 高圧燃料が蓄圧される蓄圧器(101)と、前記蓄圧器(101)内の圧力を検出する圧力センサ(108)と、前記蓄圧器(101)の高圧燃料を内燃機関に噴射する燃料噴射弁(102)と、駆動信号を受けたときに前記蓄圧器(101)の高圧燃料を低圧部(106)に排出させて前記蓄圧器(101)内を減圧する減圧弁(1)と、前記蓄圧器(101)内を減圧する減圧条件が成立したときに前記駆動信号の出力時間を演算して通常時駆動信号を出力する減圧弁制御手段(S131)とを備える内燃機関用燃料噴射装置において、
前記減圧条件が成立し且つ学習許可条件が成立したときに、学習時駆動信号を出力し、前記圧力センサ(108)にて検出した蓄圧器内圧力(Pc)の変化状況に基づいて前記減圧弁(1)の特性を推定する学習手段(S104〜114)を備え、
前記学習手段(S104〜114)は、前記蓄圧器(101)内を目標圧力(Pco)まで減圧するとき、前記学習時駆動信号を複数に分割して出力し、分割された学習時駆動信号毎の前記蓄圧器内圧力(Pc)の降下量(ΔPdact)を検出し、分割された学習時駆動信号毎の前記減圧弁(1)の実開弁時間(ΔTact)を前記蓄圧器内圧力(Pc)の降下量(ΔPdact)で除算して実減圧特性値(Aact)を求めるとともに、前記減圧弁(1)の実開弁遅れ時間(Topen・act)を推定し、
前記減圧弁制御手段(S131)は、前記学習手段(S104〜114)で求めた前記実減圧特性値(Aact)が小さくなるほど前記通常時駆動信号の出力時間(T)を短くするとともに、前記学習手段(S104〜114)で推定した前記減圧弁(1)の実開弁遅れ時間(Topen・act)が長くなるほど前記通常時駆動信号の出力時間(T)を長くすることを特徴とする内燃機関用燃料噴射装置。 - 前記学習手段(S104〜114)は、分割された学習時駆動信号毎の出力時間(ΔT)を、減圧開始から減圧終了にかけて漸次短くすることを特徴とする請求項1に記載の内燃機関用燃料噴射装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006316633A JP4706623B2 (ja) | 2006-11-24 | 2006-11-24 | 内燃機関用燃料噴射装置 |
DE200710047841 DE102007047841A1 (de) | 2006-11-24 | 2007-11-21 | Kraftstoffeinspritzsystem, das zum kompensieren einer individuellen Änderung des Betriebs eines Druckreduzierventils ausgelegt ist |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006316633A JP4706623B2 (ja) | 2006-11-24 | 2006-11-24 | 内燃機関用燃料噴射装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008128163A JP2008128163A (ja) | 2008-06-05 |
JP4706623B2 true JP4706623B2 (ja) | 2011-06-22 |
Family
ID=39477827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006316633A Active JP4706623B2 (ja) | 2006-11-24 | 2006-11-24 | 内燃機関用燃料噴射装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4706623B2 (ja) |
DE (1) | DE102007047841A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5131265B2 (ja) | 2009-12-24 | 2013-01-30 | 株式会社デンソー | 燃料圧力制御装置 |
JP6330678B2 (ja) * | 2015-02-04 | 2018-05-30 | 株式会社デンソー | 減圧弁制御装置 |
GB2578577A (en) * | 2018-10-30 | 2020-05-20 | Perkins Engines Co Ltd | Fuel system control |
JP7070378B2 (ja) * | 2018-12-04 | 2022-05-18 | 株式会社デンソー | 燃料噴射システム |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006242091A (ja) * | 2005-03-03 | 2006-09-14 | Denso Corp | 燃料噴射装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02301644A (ja) * | 1989-05-15 | 1990-12-13 | Japan Electron Control Syst Co Ltd | 内燃機関の燃料供給制御装置における気筒別誤差検出装置,気筒別学習装置及び気筒別診断装置 |
JPH09324691A (ja) * | 1996-06-03 | 1997-12-16 | Unisia Jecs Corp | 内燃機関の燃料噴射制御装置 |
JP4093696B2 (ja) | 1999-02-25 | 2008-06-04 | 株式会社日本自動車部品総合研究所 | 燃料噴射装置の減圧調整弁 |
-
2006
- 2006-11-24 JP JP2006316633A patent/JP4706623B2/ja active Active
-
2007
- 2007-11-21 DE DE200710047841 patent/DE102007047841A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006242091A (ja) * | 2005-03-03 | 2006-09-14 | Denso Corp | 燃料噴射装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2008128163A (ja) | 2008-06-05 |
DE102007047841A1 (de) | 2008-07-10 |
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