JP4721907B2 - イオン電流に基づく内燃機関の空燃比判定方法 - Google Patents
イオン電流に基づく内燃機関の空燃比判定方法 Download PDFInfo
- Publication number
- JP4721907B2 JP4721907B2 JP2006002522A JP2006002522A JP4721907B2 JP 4721907 B2 JP4721907 B2 JP 4721907B2 JP 2006002522 A JP2006002522 A JP 2006002522A JP 2006002522 A JP2006002522 A JP 2006002522A JP 4721907 B2 JP4721907 B2 JP 4721907B2
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- Prior art keywords
- fuel ratio
- air
- ion current
- generation period
- current
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims description 78
- 238000002485 combustion reaction Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 7
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000011144 upstream manufacturing 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
- 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
- F02D35/021—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using an ionic current sensor
-
- 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
-
- 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
-
- 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
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
変動率=偏差平均/(平均値)n (1)
演算された変動率は、図4に示すように、空燃比がリーンになるに応じて大きくなり、したがって空燃比がリッチなるに応じて小さくなる。これは、式(1)による変動率の演算において、平均値をn乗していることにより例えば、空燃比がリッチな場合とリーンな場合とで同じ値の偏差平均となっても、除数は空燃比がリッチな場合の方がリーンな場合に比較して大きいために、変動率を演算するに際しての数値処理により、空燃比がリッチな場合の変動率はより小さくなり、空燃比がリーンな場合の変動率が強調された状態で表されるものとなる。
7…中央演算処理装置
8…記憶装置
9…入力インターフェース
11…出力インターフェース
I…イオン電流
P…発生期間
SL…閾値
DL…所定値
Claims (1)
- 内燃機関の燃焼室内に点火毎に発生するイオン電流を検出するものにおいて、
イオン電流が発生している間に設定された判定値を上回っている発生期間を計測し、
イオン電流の発生期間の変動率を演算するための除数を計測した複数の発生期間の平均値又は合計値に基づいて演算し、
演算した除数をn乗して重み付けをし、
重み付けした除数により、今回計測したイオン電流の発生期間と発生期間の平均値との偏差又は発生期間の標準偏差を除してイオン電流の発生期間の変動率を演算し、
算出した変動率が、実際の空燃比がオーバーリーンであると定めた内燃機関の運転において求めた変動率から設定する所定値以上の場合に空燃比がオーバーリーンであると判定するイオン電流に基づく内燃機関の空燃比判定方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006002522A JP4721907B2 (ja) | 2006-01-10 | 2006-01-10 | イオン電流に基づく内燃機関の空燃比判定方法 |
CN2006800508578A CN101356353B (zh) | 2006-01-10 | 2006-12-27 | 根据离子电流判定内燃机的空燃比的方法 |
US12/160,474 US20100154509A1 (en) | 2006-01-10 | 2006-12-27 | Method for determining air fuel ratio of internal combustion engine on the basis of ion current |
PCT/JP2006/326132 WO2007080799A1 (ja) | 2006-01-10 | 2006-12-27 | イオン電流に基づく内燃機関の空燃比判定方法 |
DE112006003641T DE112006003641T5 (de) | 2006-01-10 | 2006-12-27 | Verfahren zum Bestimmen eines Luftkraftstoffverhältnisses einer Brennkraftmaschine auf Grundlage eines Ionenstroms |
GB0810972A GB2447177A (en) | 2006-01-10 | 2008-06-16 | Air-fuel ratio judging method of internal combustion engine based on ion current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006002522A JP4721907B2 (ja) | 2006-01-10 | 2006-01-10 | イオン電流に基づく内燃機関の空燃比判定方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007182843A JP2007182843A (ja) | 2007-07-19 |
JP4721907B2 true JP4721907B2 (ja) | 2011-07-13 |
Family
ID=38256210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006002522A Expired - Fee Related JP4721907B2 (ja) | 2006-01-10 | 2006-01-10 | イオン電流に基づく内燃機関の空燃比判定方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100154509A1 (ja) |
JP (1) | JP4721907B2 (ja) |
CN (1) | CN101356353B (ja) |
DE (1) | DE112006003641T5 (ja) |
WO (1) | WO2007080799A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4619299B2 (ja) * | 2006-02-06 | 2011-01-26 | ダイハツ工業株式会社 | 内燃機関の燃焼状態判定方法 |
JP4799200B2 (ja) * | 2006-02-06 | 2011-10-26 | ダイハツ工業株式会社 | 内燃機関のイオン電流に基づく運転制御方法 |
JP4816773B2 (ja) * | 2009-07-16 | 2011-11-16 | 株式会社デンソー | 排気成分濃度センサの応答性検出装置 |
JP5220212B1 (ja) * | 2012-03-13 | 2013-06-26 | 三菱電機株式会社 | 圧縮自己着火内燃機関の制御装置および制御方法 |
CN103603738B (zh) * | 2013-11-18 | 2016-10-19 | 同济大学 | 基于离子电流预测发动机缸内空燃比的方法 |
ITRE20150037A1 (it) * | 2015-05-07 | 2016-11-07 | Emak Spa | Sistema per il controllo continuo della carburazione |
CN110501100A (zh) * | 2019-09-23 | 2019-11-26 | 重庆长安汽车股份有限公司 | 一种基于点火放电电离信号的发动机转矩检测方法 |
WO2024069852A1 (ja) * | 2022-09-29 | 2024-04-04 | 株式会社Subaru | 車両用制御装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03150429A (ja) * | 1989-07-20 | 1991-06-26 | Teledyne Ind Inc | 抵抗コンパレータ集積回路 |
JPH08144819A (ja) * | 1994-11-25 | 1996-06-04 | Daihatsu Motor Co Ltd | リーン限界検出方法 |
JPH08261047A (ja) * | 1995-03-27 | 1996-10-08 | Daihatsu Motor Co Ltd | リーン限界検出方法 |
JPH10169502A (ja) * | 1996-12-10 | 1998-06-23 | Daihatsu Motor Co Ltd | 内燃機関の燃焼変動検出方法 |
JPH10176594A (ja) * | 1996-12-18 | 1998-06-30 | Daihatsu Motor Co Ltd | 内燃機関の燃焼変動検出方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3150429B2 (ja) * | 1992-07-21 | 2001-03-26 | ダイハツ工業株式会社 | イオン電流によるリーン限界検出方法 |
DE19755257A1 (de) * | 1997-12-12 | 1999-06-24 | Daimler Chrysler Ag | Verfahren zur Erkennung von klopfender Verbrennung aus einem Ionenstromsignal bei Brennkraftmaschinen |
DE19953710B4 (de) * | 1999-11-08 | 2010-06-17 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Meßfenster-Positionierung für die Ionenstrommessung |
CN1584540A (zh) * | 2004-05-21 | 2005-02-23 | 浙江大学 | 在线测量车用汽油机废气再循环率的方法及装置 |
JP4269034B2 (ja) * | 2004-09-29 | 2009-05-27 | ヤマハ発動機株式会社 | 船舶用エンジン |
US7637246B2 (en) * | 2006-09-05 | 2009-12-29 | Woodward Governor Company | Compensating for varying fuel and air properties in an ion signal |
-
2006
- 2006-01-10 JP JP2006002522A patent/JP4721907B2/ja not_active Expired - Fee Related
- 2006-12-27 CN CN2006800508578A patent/CN101356353B/zh not_active Expired - Fee Related
- 2006-12-27 DE DE112006003641T patent/DE112006003641T5/de not_active Withdrawn
- 2006-12-27 WO PCT/JP2006/326132 patent/WO2007080799A1/ja active Application Filing
- 2006-12-27 US US12/160,474 patent/US20100154509A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03150429A (ja) * | 1989-07-20 | 1991-06-26 | Teledyne Ind Inc | 抵抗コンパレータ集積回路 |
JPH08144819A (ja) * | 1994-11-25 | 1996-06-04 | Daihatsu Motor Co Ltd | リーン限界検出方法 |
JPH08261047A (ja) * | 1995-03-27 | 1996-10-08 | Daihatsu Motor Co Ltd | リーン限界検出方法 |
JPH10169502A (ja) * | 1996-12-10 | 1998-06-23 | Daihatsu Motor Co Ltd | 内燃機関の燃焼変動検出方法 |
JPH10176594A (ja) * | 1996-12-18 | 1998-06-30 | Daihatsu Motor Co Ltd | 内燃機関の燃焼変動検出方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2007080799A1 (ja) | 2007-07-19 |
CN101356353B (zh) | 2010-07-28 |
JP2007182843A (ja) | 2007-07-19 |
DE112006003641T5 (de) | 2008-11-20 |
CN101356353A (zh) | 2009-01-28 |
US20100154509A1 (en) | 2010-06-24 |
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