Engine knocking meter
    1.
    发明授权
    Engine knocking meter 失效
    发动机敲击仪

    公开(公告)号:US4163385A

    公开(公告)日:1979-08-07

    申请号:US811207

    申请日:1977-06-29

    CPC分类号: G01M15/08 G01L23/225

    摘要: An engine knocking meter detects a pressure in a cylinder by a pressure sensor, clips a detected signal by a clipping circuit to cut low level noises, supplies an output signal of the clipping circuit to a filter circuit to eliminate noises having frequencies which lie beyond a frequency band of a knocking signal, and supplies an output signal of the filter circuit to a gate which is driven within a given crank angle under the control of a signal from a crank angle sensor mounted on a crank shaft of an engine, for separating the knocking signal.

    摘要翻译: 发动机敲击仪通过压力传感器检测气缸中的压力,通过限幅电路夹紧检测信号以切断低电平噪声,将削波电路的输出信号提供给滤波电路,以消除噪声,其频率超出 并且在来自安装在发动机的曲轴上的曲柄角传感器的信号的控制下,将滤波器电路的输出信号提供给在给定的曲柄角内被驱动的门,以分离 敲门信号。