发明名称 |
Method and apparatus for detecting deterioration of a hot-wire type sucked air flow quantity-detecting device for an engine |
摘要 |
The present invention relates to a method and apparatus for detecting deterioration of a hot-wire type sucked air flow quantity-detecting device of an engine, in which the change ratio of the output voltage of the hot-wire type sucked air flow quantity-detecting device is measured when the output voltage of the sucked air flow quantity-detecting device is to be changed while the engine is in the substantially non-revolving state, and deterioration is judged by comparing the measured change ratio with a predetermined value, whereby it is possible to exchange parts promptly just in time and prevent degradation of the exhaust gas-purging performance of a vehicle.
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申请公布号 |
US5044196(A) |
申请公布日期 |
1991.09.03 |
申请号 |
US19900540615 |
申请日期 |
1990.06.20 |
申请人 |
JAPAN ELECTRONIC CONTROL SYSTEMS CO., LTD. |
发明人 |
TOMISAWA, NAOKI;OKADA, HIROSHI |
分类号 |
F02D41/18;F02D45/00;G01F1/696;G01F25/00 |
主分类号 |
F02D41/18 |
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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