发明名称 |
A MISFIRE DETECTOR DEVICE FOR USE IN INTERNAL COMBUSTION ENGINE |
摘要 |
In a misfire detector device for use in internal combustion engine, an electrical interrupter circuit on-off actuates a primary current flowing through a primary circuit of an ignition coil to induce a sparkplug voltage which is applied to a multi-electrode type spark plug. A check diode or a series gap is provided in a secondary circuit of the ignition coil to prevent a current flowing back to the ignition coil. A sparkplug voltage detector circuit detects an attenuation time length of a sparkplug voltage waveform presented subsequent to a time period predetermined after an end of a spark action of the spark plug. On the basis of the attenuation time length, a distinction circuit determines whether a misfire occurs in a cylinder of an internal combustion engine. <IMAGE> |
申请公布号 |
EP0560603(A3) |
申请公布日期 |
1994.11.30 |
申请号 |
EP19930301842 |
申请日期 |
1993.03.11 |
申请人 |
NGK SPARK PLUG CO., LTD |
发明人 |
MIYATA, SHIGERU;MATSUBARA, YOSHIHIRO;KAGAWA, JUNICHI |
分类号 |
F02P17/12;H01T13/46;(IPC1-7):F02P11/06;F02P17/00 |
主分类号 |
F02P17/12 |
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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