Engine with knock sensing apparatus having multiple frequency tuning
    1.
    发明授权
    Engine with knock sensing apparatus having multiple frequency tuning 失效
    具有爆震检测装置的发动机具有多次频率调谐

    公开(公告)号:US4364260A

    公开(公告)日:1982-12-21

    申请号:US243882

    申请日:1981-03-16

    IPC分类号: G01L23/22

    CPC分类号: G01L23/225

    摘要: A spark ignited internal combustion engine includes knock sensing apparatus comprising vibration sensing apparatus having a portion mounted on an engine component for vibration therewith and a tuned response to vibrations of a plurality of the acoustic cavity resonance frequencies of the engine cylinders. A separate signal processing channel is provided for the sensor output at each of the frequencies to indicate significant vibrations at the respective frequency. Coincidence means fed by all channels produce an engine knock signal only when significant vibrations are detected on all channels simultaneously.

    摘要翻译: 火花点火内燃机包括爆震感测装置,其包括具有安装在发动机部件上用于振动的部分的振动感测装置以及对发动机气缸的多个声腔谐振频率的振动的调谐响应。 为每个频率处的传感器输出提供单独的信号处理通道,以指示相应频率处的显着振动。 只有当所有通道同时检测到显着的振动时,由所有通道馈送的一致意味着产生发动机爆震信号。