JP2008115802A - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
- Publication number
- JP2008115802A JP2008115802A JP2006300992A JP2006300992A JP2008115802A JP 2008115802 A JP2008115802 A JP 2008115802A JP 2006300992 A JP2006300992 A JP 2006300992A JP 2006300992 A JP2006300992 A JP 2006300992A JP 2008115802 A JP2008115802 A JP 2008115802A
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- JP
- Japan
- Prior art keywords
- limit value
- air
- fuel ratio
- correction coefficient
- alcohol concentration
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 239000000446 fuel Substances 0.000 claims abstract description 204
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims 1
- 235000019441 ethanol Nutrition 0.000 description 97
- 238000000034 method Methods 0.000 description 37
- 239000002828 fuel tank Substances 0.000 description 10
- 238000010926 purge Methods 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000003502 gasoline Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000004148 curcumin Substances 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000005068 transpiration Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
【解決手段】検出された空燃比と目標空燃比との偏差に応じて算出される空燃比補正係数KAFに基づいて燃料に含まれるアルコール濃度を学習してアルコール濃度補正係数KREFBSを算出すると共に、空燃比補正係数KAFの制限値KAFALH,KAFALLを設定する内燃機関の制御装置において、空燃比補正係数KAFが制限値KAFALH,KAFALLに達したとき、前記制限値を変更する。
【選択図】図5
Description
Claims (4)
- 排気中の空燃比を検出する空燃比検出手段と、前記検出された空燃比と目標空燃比との偏差に応じて燃料噴射量の空燃比補正係数を算出する空燃比補正係数算出手段と、前記算出される空燃比補正係数に基づいて燃料に含まれるアルコール濃度を学習するアルコール濃度学習手段と、前記空燃比補正係数の制限値を設定する制限値設定手段と、前記アルコール濃度学習手段が学習するときに前記制限値を変更する制限値変更手段とを備えた内燃機関の制御装置において、前記制限値変更手段は、前記空燃比補正係数が前記制限値に達したとき、前記制限値を変更することを特徴とする内燃機関の制御装置。
- 前記制限値設定手段は前記制限値を上限値と下限値とで設定すると共に、前記制限値変更手段は、前記空燃比補正係数が前記上限値に達したとき、前記上限値と前記下限値とをそれぞれ第1の所定値だけ増加補正する一方、前記空燃比補正係数が前記下限値に達したとき、前記下限値と前記上限値とをそれぞれ第2の所定値だけ減少補正することを特徴とする請求項1記載の内燃機関の制御装置。
- 前記制限値設定手段は上限リミット値と下限リミット値の間で前記上限値と下限値を設定すると共に、前記アルコール濃度学習手段の学習によって算出されるアルコール濃度に応じ、前記上限リミット値と前記下限リミット値を持ち替えることを特徴とする請求項2記載の内燃機関の制御装置。
- 前記制限値変更手段は、前記アルコール濃度学習手段が学習を開始する前のアルコール濃度前回値に応じ、前記上限リミット値と下限リミット値を持ち替えることを特徴とする請求項3記載の内燃機関の制御装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006300992A JP4758866B2 (ja) | 2006-11-06 | 2006-11-06 | 内燃機関の制御装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006300992A JP4758866B2 (ja) | 2006-11-06 | 2006-11-06 | 内燃機関の制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008115802A true JP2008115802A (ja) | 2008-05-22 |
JP4758866B2 JP4758866B2 (ja) | 2011-08-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006300992A Expired - Fee Related JP4758866B2 (ja) | 2006-11-06 | 2006-11-06 | 内燃機関の制御装置 |
Country Status (1)
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JP (1) | JP4758866B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010270677A (ja) * | 2009-05-21 | 2010-12-02 | Mitsubishi Electric Corp | 内燃機関の制御装置 |
US8443655B2 (en) | 2011-09-06 | 2013-05-21 | Honda Motor Co., Ltd. | Method of controlling fuel composition learning |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02185634A (ja) * | 1989-01-09 | 1990-07-20 | Nissan Motor Co Ltd | アルコール内燃機関の空燃比制御装置 |
JPH08144815A (ja) * | 1994-11-24 | 1996-06-04 | Keihin Seiki Mfg Co Ltd | 内燃機関の空燃比制御装置 |
-
2006
- 2006-11-06 JP JP2006300992A patent/JP4758866B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02185634A (ja) * | 1989-01-09 | 1990-07-20 | Nissan Motor Co Ltd | アルコール内燃機関の空燃比制御装置 |
JPH08144815A (ja) * | 1994-11-24 | 1996-06-04 | Keihin Seiki Mfg Co Ltd | 内燃機関の空燃比制御装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010270677A (ja) * | 2009-05-21 | 2010-12-02 | Mitsubishi Electric Corp | 内燃機関の制御装置 |
US8443655B2 (en) | 2011-09-06 | 2013-05-21 | Honda Motor Co., Ltd. | Method of controlling fuel composition learning |
US8789409B2 (en) | 2011-09-06 | 2014-07-29 | Honda Motor Co., Ltd. | Method of controlling fuel composition learning |
Also Published As
Publication number | Publication date |
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JP4758866B2 (ja) | 2011-08-31 |
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