JP4716283B2 - 内燃機関の空燃比制御装置 - Google Patents
内燃機関の空燃比制御装置 Download PDFInfo
- Publication number
- JP4716283B2 JP4716283B2 JP2006031264A JP2006031264A JP4716283B2 JP 4716283 B2 JP4716283 B2 JP 4716283B2 JP 2006031264 A JP2006031264 A JP 2006031264A JP 2006031264 A JP2006031264 A JP 2006031264A JP 4716283 B2 JP4716283 B2 JP 4716283B2
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- Prior art keywords
- cylinder
- air
- fuel ratio
- pressure
- internal combustion
- 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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- 239000000446 fuel Substances 0.000 title claims description 100
- 238000002485 combustion reaction Methods 0.000 title claims description 58
- 238000001514 detection method Methods 0.000 claims description 22
- 238000004364 calculation method Methods 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/028—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the combustion timing or phasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
- F02D41/1458—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with determination means using an estimation
Description
ただし、#は気筒の番号であり、気筒ごとに偏差を算出する。
このような正規化により、空燃比補正係数の平均値が1になるので、バンク全体の空燃比は変化させずに、各気筒の空燃比を補正することができる。
算出された開弁時間TOUTの指令値が、インジェクタ51へ送られる。
12 筒内圧センサ
15 センサ出力検出部
20 モータリング圧力推定部
45 平均着火遅れ算出部
47 空燃比補正部
49 燃料噴射量算出部
Claims (4)
- 複数の気筒を有する内燃機関の空燃比制御装置であって、
前記内燃機関の各気筒に備えられるとともに、該気筒内の圧力を検出する圧力検出手段と、
前記内燃機関のモータリング圧力を推定する推定手段と、
前記内燃機関の圧縮行程から燃焼行程に至る期間において、前記気筒内圧力と前記モータリング圧力との差が所定値を超える時点を燃焼開始時点として検出し、気筒ごとに点火時点から該燃焼開始時点までの着火遅れを算出する、着火遅れ算出手段と、
前記複数の気筒の着火遅れの平均値と各気筒の着火遅れとの差により、前記複数の気筒の空燃比の平均値と各気筒の空燃比との差を算出するとともに、前記空燃比の差がなくなるように各気筒の空燃比を補正するための補正係数を算出する補正係数算出手段と、
前記補正係数に応じて各気筒の空燃比が均一になるように各気筒への燃料噴射量を算出する、燃料噴射量算出手段と、
を有する内燃機関の空燃比制御装置。 - 前記圧力検出手段の出力を補正式に従って補正する補正手段と、
前記内燃機関のクランク角度を検出するクランク角度検出手段と、
前記内燃機関の圧縮行程における所定の期間に、前記モータリング圧力の推定値と、前記圧力検出手段の出力を前記補正手段によって補正した値との差が最小にするように、前記補正式のパラメータを同定するパラメータ同定手段とを備え、
前記推定手段は、前記クランク角度検出手段によって検出されるクランク角度に基づいて前記内燃機関のモータリング圧力を推定し、
前記着火遅れ算出手段は、前記内燃機関の圧縮行程において、同定された前記パラメータにより補正された前記圧力検出手段の出力と前記モータリング圧力との差が所定値を超える時点を燃焼開始時点として検出する、請求項1に記載の空燃比制御装置。 - 前記推定手段は、前記クランク角度検出手段によって検出されるクランク角度に基づいて算出する前記内燃機関の燃焼室の容積に基づいて基本モータリング圧力を計算するモータリング圧力計算手段と、
前記内燃機関の負荷に応じた補正パラメータを用いて前記基本モータリング圧力を補正する本モータリング圧力補正手段と、を備える請求項1に記載の空燃比制御装置。 - 前記補正係数算出手段が、前記複数の気筒の補正係数の平均値を算出し、前記補正係数を該平均値で正規化し、前記燃料噴射量算出手段が、該正規化された補正係数により各気筒への燃料噴射量を算出する、請求項1〜3のいずれかに記載の空燃比制御装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006031264A JP4716283B2 (ja) | 2006-02-08 | 2006-02-08 | 内燃機関の空燃比制御装置 |
US11/703,211 US7377262B2 (en) | 2006-02-08 | 2007-02-07 | Air-fuel ratio controlling apparatus for an engine |
DE602007009733T DE602007009733D1 (de) | 2006-02-08 | 2007-02-07 | Vorrichtung zum Regeln des Luft-/Kraftstoffverhältnisses für einen Motor |
EP07002630A EP1818525B1 (en) | 2006-02-08 | 2007-02-07 | An air-fuel ratio controlling apparatus for an engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006031264A JP4716283B2 (ja) | 2006-02-08 | 2006-02-08 | 内燃機関の空燃比制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007211654A JP2007211654A (ja) | 2007-08-23 |
JP4716283B2 true JP4716283B2 (ja) | 2011-07-06 |
Family
ID=38038737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006031264A Expired - Fee Related JP4716283B2 (ja) | 2006-02-08 | 2006-02-08 | 内燃機関の空燃比制御装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7377262B2 (ja) |
EP (1) | EP1818525B1 (ja) |
JP (1) | JP4716283B2 (ja) |
DE (1) | DE602007009733D1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7913545B2 (en) * | 2008-04-30 | 2011-03-29 | GM Global Technology Operations LLC | Time and angle based cylinder pressure data collection |
FI122489B (fi) * | 2008-05-26 | 2012-02-15 | Waertsilae Finland Oy | Menetelmä ja järjestelmä dieselmoottorin sylintereiden tasapainottamiseksi |
WO2010008994A2 (en) * | 2008-07-14 | 2010-01-21 | Schlumberger Canada Limited | Formation evaluation instrument and method |
JP5534888B2 (ja) * | 2010-03-24 | 2014-07-02 | 本田技研工業株式会社 | エンジン始動制御装置 |
JP5459236B2 (ja) * | 2011-01-20 | 2014-04-02 | トヨタ自動車株式会社 | 筒内圧センサ異常検出装置 |
CN103547783B (zh) * | 2011-05-16 | 2016-04-27 | 丰田自动车株式会社 | 内燃机的空燃比失衡检测装置 |
EP2778379A4 (en) * | 2011-11-11 | 2015-08-05 | Toyota Motor Co Ltd | PRESSURE SENSOR DIAGNOSTIC DEVICE MOUNTED IN THE CYLINDER, AND SENSOR SENSITIVITY CORRECTION DEVICE MOUNTED IN THE CYLINDER, EQUIPPED WITH SAME |
JP5727395B2 (ja) * | 2012-01-16 | 2015-06-03 | 日立オートモティブシステムズ株式会社 | 内燃機関の制御装置 |
US10787976B1 (en) | 2019-04-18 | 2020-09-29 | Caterpillar Inc. | System and method for estimating cylinder pressure |
CN111520243B (zh) * | 2020-04-30 | 2022-06-07 | 四川华气动力有限责任公司 | 一种发动机燃气回路的启动控制方法及其控制系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57153966A (en) * | 1981-03-17 | 1982-09-22 | Nissan Motor Co Ltd | Electronic controller of spark-ignition engine |
JPS61147351U (ja) * | 1985-03-04 | 1986-09-11 | ||
JPH03246374A (ja) * | 1990-02-22 | 1991-11-01 | Nissan Motor Co Ltd | 内燃機関の失火検出装置 |
JP2000240497A (ja) * | 1999-02-19 | 2000-09-05 | Denso Corp | 内燃機関の燃料噴射量検出装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61147351A (ja) * | 1984-12-20 | 1986-07-05 | Mitsubishi Electric Corp | プログラマブルコントロ−ラ |
JPH0299745A (ja) | 1988-10-07 | 1990-04-11 | Hitachi Ltd | 内燃機関の制御装置および異常診断装置 |
JPH08261048A (ja) * | 1995-03-27 | 1996-10-08 | Toyota Motor Corp | 内燃機関の空燃比制御装置 |
JP3893967B2 (ja) * | 2001-12-18 | 2007-03-14 | 日産自動車株式会社 | ディーゼルエンジンの制御装置 |
US7178507B1 (en) * | 2005-10-31 | 2007-02-20 | Gm Global Technology Operations, Inc. | Engine cylinder-to-cylinder variation control |
-
2006
- 2006-02-08 JP JP2006031264A patent/JP4716283B2/ja not_active Expired - Fee Related
-
2007
- 2007-02-07 US US11/703,211 patent/US7377262B2/en active Active
- 2007-02-07 EP EP07002630A patent/EP1818525B1/en not_active Expired - Fee Related
- 2007-02-07 DE DE602007009733T patent/DE602007009733D1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57153966A (en) * | 1981-03-17 | 1982-09-22 | Nissan Motor Co Ltd | Electronic controller of spark-ignition engine |
JPS61147351U (ja) * | 1985-03-04 | 1986-09-11 | ||
JPH03246374A (ja) * | 1990-02-22 | 1991-11-01 | Nissan Motor Co Ltd | 内燃機関の失火検出装置 |
JP2000240497A (ja) * | 1999-02-19 | 2000-09-05 | Denso Corp | 内燃機関の燃料噴射量検出装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1818525A1 (en) | 2007-08-15 |
JP2007211654A (ja) | 2007-08-23 |
EP1818525B1 (en) | 2010-10-13 |
DE602007009733D1 (de) | 2010-11-25 |
US7377262B2 (en) | 2008-05-27 |
US20070221170A1 (en) | 2007-09-27 |
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