发明名称 |
Oxygen concentration sensor trouble discriminating apparatus |
摘要 |
<p>An oxygen concentration sensor trouble discriminating apparatus in which a counter executes a counting operation every time a lean state of an air-fuel ratio is detected on the basis of an output signal of an oxygen concentration sensor for the first time after a feedback control operating state was not detected. In the case where the air-fuel ratio feedback control operating state is detected, if the output signal of the oxygen concentration sensor indicates an inversion of the rich and lean states of the air-fuel ratio, a count value of the counter is reset to an initial value. When the count value is larger than a predetermined value, the oxygen concentration sensor is decided to be in trouble.</p> |
申请公布号 |
EP0962643(A2) |
申请公布日期 |
1999.12.08 |
申请号 |
EP19990110408 |
申请日期 |
1999.05.28 |
申请人 |
KEIHIN CORPORATION;HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
KONNO, YUUICHI;HIRAKATA, YOSHIAKI;MACHIDA, KENICNI |
分类号 |
G01N27/409;F02D41/14;F02D41/22;F02D45/00;G01N27/26;(IPC1-7):F02D41/22 |
主分类号 |
G01N27/409 |
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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