发明名称 |
AIR-FUEL RATIO CONTROLLER FOR INTERNAL COMBUSTION ENGINES |
摘要 |
<p>A target air-fuel ratio KCMD for an exhaust gas upstream of a catalytic converter (3) is sequentially determined to converge the output V02/OUT of an 02 sensor (6) downstream of the catalytic converter to a target value V02/TARGET, and the amount of fuel supplied to an internal combustion engine (1) is controlled to converge the output KACT of an air-fuel ratio sensor (5) to the target air-fuel ratio KCMD. While the amount of fuel supplied to the internal combustion engine (1) is being thus controlled, the value of a deterioration linear function sigma whose variable components are represented by time-series data of the output V02/OUT of the 02 sensor (6) is determined. A central value of the square sigma <2> of the value of the deterioration linear function sigma is determined as a deterioration evaluating parameter. A deteriorated state of the catalytic converter (3) is evaluated on the basis of the value of the deterioration evaluating parameter. <IMAGE></p> |
申请公布号 |
EP1243769(A1) |
申请公布日期 |
2002.09.25 |
申请号 |
EP20000987695 |
申请日期 |
2000.12.21 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
UENO, MASAKI;AKAZAKI, SHUSUKE;IWAKI, YOSHIHISA;KITAGAWA, HIROSHI |
分类号 |
F02D45/00;B01D53/86;F01N3/20;F01N3/24;F01N11/00;F02D41/02;F02D41/14;(IPC1-7):F01N11/00 |
主分类号 |
F02D45/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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