JP2007023930A - 蓄圧式燃料噴射制御装置 - Google Patents
蓄圧式燃料噴射制御装置 Download PDFInfo
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- JP2007023930A JP2007023930A JP2005208649A JP2005208649A JP2007023930A JP 2007023930 A JP2007023930 A JP 2007023930A JP 2005208649 A JP2005208649 A JP 2005208649A JP 2005208649 A JP2005208649 A JP 2005208649A JP 2007023930 A JP2007023930 A JP 2007023930A
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- 238000002347 injection Methods 0.000 title claims abstract description 140
- 239000007924 injection Substances 0.000 title claims abstract description 140
- 239000000446 fuel Substances 0.000 title claims abstract description 118
- 230000007704 transition Effects 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims description 19
- 238000009530 blood pressure measurement Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 238000009499 grossing Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- 239000002828 fuel tank Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
-
- 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
- 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
- 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
- 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
- F02M63/04—Fuel-injection apparatus having injection valves held closed by a cyclically-operated mechanism for a time and automatically opened by fuel pressure, e.g. constant-pressure pump or accumulator, when that mechanism releases the 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
- F02D41/20—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
- 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
- F02D2200/0602—Fuel pressure
- F02D2200/0604—Estimation of fuel pressure
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- 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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
【解決手段】 コモンレール1は減圧弁8を備えていて、コモンレール内の燃料の圧力推移状態を推定する圧力パターン推定手段と、該圧力パターン推定手段による圧力パターンデータが目標コモンレール圧を上回る圧力領域を演算する余剰圧領域演算手段とによって演算された余剰圧力領域を取り除くように、減圧弁を作動させコモンレール圧を低圧側に排出制御する。これにより、噴射期間中のコモンレール圧(噴射圧)を平滑化する。
【選択図】 図2
Description
請求項1に記載の蓄圧式燃料噴射制御装置は、高圧燃料を蓄圧する蓄圧容器と、この蓄圧容器内の高圧燃料をエンジンの各気筒内に噴射する燃料噴射弁と、燃料を加圧して蓄圧容器に圧送する燃料供給ポンプの他に、要求噴射量と目標コモンレール圧に基づいて噴射期間が設定され、この噴射期間における蓄圧容器内の燃料の圧力推移状態を推定する圧力パターン推定手段と、この圧力パターン推定手段による圧力パターンデータに基づいて、目標コモンレール圧が設定されており、噴射期間中における圧力パターンデータが目標コモンレール圧を上回る圧力領域を演算する余剰圧領域演算手段と、この余剰圧領域演算手段により演算された余剰圧力領域を取り除くように、コモンレール圧を低圧側に排出制御する減圧弁とを備えるようにしたものであり、これにより、燃料噴射弁による燃料の噴射期間中の噴射圧を平滑化することができ、安定な燃焼状態を得ることができ、運転性能を安定化させることが可能となる。
請求項3の蓄圧式燃料噴射制御装置は、圧力パターン推定手段による圧力パターンデータの下限値が、目標コモンレール圧よりも常に高くなるようにしたものである。これは、減圧弁の機能がコモンレール圧を下げる方向にしか作用させることができないために、この下限値を目標コモンレール圧以上としている。
請求項5の蓄圧式燃料噴射制御装置は、余剰圧力領域を取り除くように減圧弁の開弁の開始時期及び開弁期間を定めるようにしたものであり、これにより、噴射期間中の噴射圧の平滑化を図ることが可能となる。
ΔP={〔ポンプ吐出量−(噴射量+インジェクタリーク量)〕/コモンレール体積}×E (1)
余剰圧力ΔPを算出することによって、余剰圧力領域を演算している。ここで、Eは燃料体積弾性係数Fであり、燃料温度、圧力及び固有定数によって決められている。
このようにして計算された余剰圧力ΔPが規定圧力値以上であった場合に、減圧弁8を作動して、コモンレール1内の燃料を低圧側に排出し、余剰圧力領域を取り除くようにしている。
2 インジェクタ(燃料噴射弁)
3 サプライポンプ(燃料供給ポンプ)
4 噴射制御用電磁弁
5 燃料タンク
6 フィルタ
7 ポンプ電磁弁
8 減圧弁
10 電子制御ユニット(ECU)
25 コモンレール圧センサ
Claims (5)
- 高圧燃料を蓄圧する蓄圧容器と、
前記蓄圧容器内の高圧燃料をエンジンの各気筒に噴射する燃料噴射弁と、
吸入した燃料を加圧して前記蓄圧容器に圧送する燃料供給ポンプと、
を備えていて、前記燃料供給ポンプより燃料を目標コモンレール圧となるように前記蓄圧容器内に吐出調整し、前記燃料噴射弁より気筒内に燃料を噴射させる蓄圧式燃料噴射制御装置において、
要求噴射量と目標コモンレール圧に基づいて噴射期間が設定され、前記噴射期間における前記蓄圧容器内の燃料の圧力推移状態を推定する圧力パターン推定手段と、
前記圧力パターン推定手段による圧力パターンデータに基づいて、前記目標コモンレール圧が設定されており、前記噴射期間中における前記圧力パターンデータが前記目標コモンレール圧を上回る圧力領域を演算する余剰圧領域演算手段と、
前記余剰圧領域演算手段により演算された余剰圧力領域を取り除くように、コモンレール圧を低圧側に排出制御する減圧弁と、
を具備していることを特徴とする蓄圧式燃料噴射制御装置。 - 前記圧力パターン推定手段は、前回における同運転条件下でのコモンレール実圧測定データ、及びエンジン回転数、コモンレール実圧、アクセル開度等の検出データによって決められる噴射期間及びポンプ吐出量に基づいて、前記蓄圧容器内の燃料の圧力推移状態を推定することを特徴とする請求項1に記載の蓄圧式燃料噴射制御装置。
- 前記圧力パターン推定手段による圧力パターンデータの下限値が、前記目標コモンレール圧以上であることを特徴とする請求項1又は2に記載の蓄圧式燃料噴射制御装置。
- 前記余剰圧領域演算手段は、前記燃料供給ポンプの吐出量、前記燃料噴射弁の噴射量及びリーク量から前記蓄圧容器内の余剰圧力ΔPを演算することを特徴とする請求項1,2又は3に記載の蓄圧式燃料噴射装置。
- 前記余剰圧力領域を取り除くように前記減圧弁の開弁の開始時期及び開弁期間が定められ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蓄圧式燃料噴射装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005208649A JP4434097B2 (ja) | 2005-07-19 | 2005-07-19 | 蓄圧式燃料噴射制御装置 |
US11/481,883 US7201148B2 (en) | 2005-07-19 | 2006-07-07 | Pressure accumulation fuel injection controller |
DE102006000349A DE102006000349B4 (de) | 2005-07-19 | 2006-07-18 | Druckspeicher-Kraftstoffeinspritzsteuerungsvorrichtung |
CNB2006101056531A CN100436793C (zh) | 2005-07-19 | 2006-07-18 | 蓄压型燃料喷射控制器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005208649A JP4434097B2 (ja) | 2005-07-19 | 2005-07-19 | 蓄圧式燃料噴射制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007023930A true JP2007023930A (ja) | 2007-02-01 |
JP4434097B2 JP4434097B2 (ja) | 2010-03-17 |
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Application Number | Title | Priority Date | Filing Date |
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JP2005208649A Active JP4434097B2 (ja) | 2005-07-19 | 2005-07-19 | 蓄圧式燃料噴射制御装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7201148B2 (ja) |
JP (1) | JP4434097B2 (ja) |
CN (1) | CN100436793C (ja) |
DE (1) | DE102006000349B4 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274843A (ja) * | 2007-04-27 | 2008-11-13 | Denso Corp | ポンプ制御装置およびそれを用いた燃料噴射システム |
JP2010190148A (ja) * | 2009-02-19 | 2010-09-02 | Denso Corp | 燃料圧力制御装置 |
JP2010190147A (ja) * | 2009-02-19 | 2010-09-02 | Denso Corp | 燃料圧力制御装置 |
US8079345B2 (en) | 2008-06-16 | 2011-12-20 | Hitachi, Ltd. | High pressure fuel supply control system for internal combustion engine |
JP2012172551A (ja) * | 2011-02-18 | 2012-09-10 | Denso Corp | 燃料噴射装置 |
JP2013108360A (ja) * | 2011-11-17 | 2013-06-06 | Komatsu Ltd | コモンレール減圧制御装置 |
Families Citing this family (15)
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JP4623066B2 (ja) * | 2007-08-31 | 2011-02-02 | 株式会社デンソー | 内燃機関の噴射制御装置 |
DE602007007331D1 (de) * | 2007-09-13 | 2010-08-05 | Magneti Marelli Spa | Verfahren zur Steuerung eines Direkteinspritzungsystems von der Common-Rail Art mit einem Absperrventil um die Flussrate einer Hochdruckkraftstoffpumpe zu regeln |
US8375922B2 (en) * | 2009-04-15 | 2013-02-19 | GM Global Technology Operations LLC | Control of fuel pump by quantifying performance |
GB2473278B (en) * | 2009-09-08 | 2014-06-18 | Gm Global Tech Operations Inc | Method and system for controlling fuel pressure |
US9506417B2 (en) * | 2014-04-17 | 2016-11-29 | Ford Global Technologies, Llc | Methods for detecting high pressure pump bore wear |
DE102015101513B4 (de) * | 2015-02-03 | 2023-01-26 | Dspace Gmbh | Computerimplementiertes Verfahren zur Berechnung und Ausgabe von Steuerimpulsen durch eine Steuereinheit |
JP6229679B2 (ja) * | 2015-02-24 | 2017-11-15 | トヨタ自動車株式会社 | エンジンの燃圧制御装置 |
US10323612B2 (en) * | 2015-06-12 | 2019-06-18 | Ford Global Technologies, Llc | Methods and systems for dual fuel injection |
EP3165750A1 (de) * | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Brennkraftmaschine mit kraftstoffinjektordiagnose |
EP3165749A1 (de) * | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Brennkraftmaschine mit einspritzmengensteuerung |
KR101766140B1 (ko) * | 2016-05-13 | 2017-08-07 | 현대자동차주식회사 | 차량의 연료압밸브 제어방법 및 그 제어시스템 |
US20190368449A1 (en) * | 2018-06-01 | 2019-12-05 | GM Global Technology Operations LLC | Returnless fuel system with accumulator |
CN111878272B (zh) * | 2020-06-30 | 2021-10-29 | 潍柴动力股份有限公司 | 高压油泵的排气装置及排气方法 |
CN115075971B (zh) * | 2022-06-13 | 2023-11-17 | 潍柴动力股份有限公司 | 单缸机控制方法、装置、电子控制单元及存储介质 |
DE102022121800A1 (de) | 2022-08-29 | 2024-02-29 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Steuern einer Einspritzmenge eines Kraftstoffs in jeweilige Zylinder eines Common-Rail-Verbrennungsmotors eines Kraftfahrzeugs, Steuergerät sowie Kraftfahrzeug |
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JPH11148400A (ja) | 1997-11-19 | 1999-06-02 | Nissan Motor Co Ltd | エンジンの蓄圧式燃料噴射装置 |
JP3849367B2 (ja) * | 1999-09-20 | 2006-11-22 | いすゞ自動車株式会社 | コモンレール式燃料噴射装置 |
JP3819208B2 (ja) * | 2000-03-01 | 2006-09-06 | 三菱電機株式会社 | 可変吐出量燃料供給装置 |
US6612292B2 (en) * | 2001-01-09 | 2003-09-02 | Nissan Motor Co., Ltd. | Fuel injection control for diesel engine |
US6484696B2 (en) * | 2001-04-03 | 2002-11-26 | Caterpillar Inc. | Model based rail pressure control for variable displacement pumps |
US6694953B2 (en) * | 2002-01-02 | 2004-02-24 | Caterpillar Inc | Utilization of a rail pressure predictor model in controlling a common rail fuel injection system |
US6712045B1 (en) * | 2002-08-08 | 2004-03-30 | Detroit Diesel Corporation | Engine control for a common rail fuel system using fuel spill determination |
JP2005069135A (ja) * | 2003-08-26 | 2005-03-17 | Toyota Motor Corp | 燃料噴射装置 |
JP2005098138A (ja) * | 2003-09-22 | 2005-04-14 | Mitsubishi Electric Corp | 筒内噴射式内燃機関の燃圧制御装置 |
US7302938B2 (en) * | 2003-10-16 | 2007-12-04 | Ford Motor Company | Mechanical returnless fuel system |
-
2005
- 2005-07-19 JP JP2005208649A patent/JP4434097B2/ja active Active
-
2006
- 2006-07-07 US US11/481,883 patent/US7201148B2/en active Active
- 2006-07-18 CN CNB2006101056531A patent/CN100436793C/zh not_active Expired - Fee Related
- 2006-07-18 DE DE102006000349A patent/DE102006000349B4/de not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274843A (ja) * | 2007-04-27 | 2008-11-13 | Denso Corp | ポンプ制御装置およびそれを用いた燃料噴射システム |
JP4605182B2 (ja) * | 2007-04-27 | 2011-01-05 | 株式会社デンソー | ポンプ制御装置およびそれを用いた燃料噴射システム |
US8079345B2 (en) | 2008-06-16 | 2011-12-20 | Hitachi, Ltd. | High pressure fuel supply control system for internal combustion engine |
JP2010190148A (ja) * | 2009-02-19 | 2010-09-02 | Denso Corp | 燃料圧力制御装置 |
JP2010190147A (ja) * | 2009-02-19 | 2010-09-02 | Denso Corp | 燃料圧力制御装置 |
JP2012172551A (ja) * | 2011-02-18 | 2012-09-10 | Denso Corp | 燃料噴射装置 |
US8670916B2 (en) | 2011-02-18 | 2014-03-11 | Denso Corporation | Fuel injection system for internal combustion engine |
JP2013108360A (ja) * | 2011-11-17 | 2013-06-06 | Komatsu Ltd | コモンレール減圧制御装置 |
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JP4434097B2 (ja) | 2010-03-17 |
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US7201148B2 (en) | 2007-04-10 |
CN100436793C (zh) | 2008-11-26 |
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US20070017485A1 (en) | 2007-01-25 |
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