发明名称 |
Misfire detector using different methods for high and low engine speeds |
摘要 |
<p>In a misfire detector device for internal combustion engine, an ignition coil is provided to be on-off actuated by a primary current interruptor circuit, each end of the ignition coil being connected to a spark plug installed in each cylinder of an internal combustion engine. A peak voltage detector circuit detects a peak voltage applied across the spark plug electrodes after an end of spark action of the spark plug. A peak voltage value distinction circuit recognizes a misfire when a voltage level exceeds a predetermined level which is detected by the peak voltage detector means after an end of spark action of the spark plug upon running the internal combustion engine at a high speed. A distinction circuit recognizes a variation of angles detected by the crank angle sensor so as to determine the misfire when the variation of angles exceeds a predetermined value upon running the internal combustion engine at a low speed. <IMAGE></p> |
申请公布号 |
EP0806566(A2) |
申请公布日期 |
1997.11.12 |
申请号 |
EP19970110946 |
申请日期 |
1993.09.13 |
申请人 |
NGK SPARK PLUG CO., LTD |
发明人 |
MIYATA, SHIGERU;ITO, YASUO |
分类号 |
F02P15/08;F02P17/12;G01M15/00;G01M15/04;(IPC1-7):F02P17/12 |
主分类号 |
F02P15/08 |
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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