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    Sensor for detecting ignition current and ion current in ignition secondary circuit
    2.
    发明公开
    Sensor for detecting ignition current and ion current in ignition secondary circuit 有权
    传感器和传感器传感器和传感器

    公开(公告)号：EP0967390A2

    公开(公告)日：1999-12-29

    申请号：EP99109710.6

    申请日：1999-05-17

    申请人： NGK SPARK PLUG CO., LTD.

    发明人： Kameda, Hiroyuki, c/o NGK SPARK PLUG CO., LTD. ,  Matsubara, Yoshihiro, c/o NGK SPARK PLUG CO., LTD.

    IPC分类号： F02P7/03 ,  F02P17/12

    CPC分类号： F02P17/12 ,  F02P7/035 ,  F02P2017/121 ,  F02P2017/125

    摘要： An ignition secondary sensor is provided which is disposed in a high voltage path between an ignition coil and a spark plug for use with a detecting circuit for detecting ignition current and ion current flowing through a spark plug. The sensor comprises an ignition path connected in series with the high voltage path and having a pair of reverse current preventing diodes and a detection path connected to a spark plug side end portion of the ignition path and having a pair of current detecting diodes. A path portion of the detection path on the side of the current detecting diodes opposite to the ignition path and a path portion of the ignition path connecting between the reverse current preventing diodes are capacitively coupled. The detecting circuit is connected to the sensor for detecting the ignition current (ignition timing) on the basis of current flowing into the sensor therefrom and the ion current (combustion timing) on the basis of current flowing from the sensor thereinto.

    摘要翻译： 提供点火二次传感器，其设置在点火线圈和火花塞之间的高压路径中，用于与用于检测点火电流的检测电路和流过火花塞的离子电流。 传感器包括与高电压路径串联连接的点火路径，并具有一对反向电流防止二极管和连接到点火路径的火花塞侧端部的检测路径并具有一对电流检测二极管。 与点火路径相反的电流检测二极管一侧的检测路径的路径部分和连接在反向电流防止二极管之间的点火通路的路径部分电容耦合。 检测电路根据从传感器流入的电流和离子电流（燃烧定时），根据从传感器流出的电流，连接到用于检测点火电流（点火正时）的传感器。