System and method for detecting knocking for internal combustion engine
    3.
    发明授权
    System and method for detecting knocking for internal combustion engine 失效
    内燃机爆震检测系统及方法

    公开(公告)号:US5608633A

    公开(公告)日:1997-03-04

    申请号:US384611

    申请日:1995-01-19

    IPC分类号: G01L23/22 F02P5/14

    CPC分类号: G01L23/225

    摘要: A system and method for detecting and determining an engine knocking for an internal combustion engine are disclosed in which a whole frequency band of an engine vibration detection signal derived from piezoelectric element type knocking sensor is divided into a plurality of frequency regions or bands, the vibration levels indicated by the respective frequency signal components or the vibration detection signal and extracted according to the respective frequency bands are compared with threshold levels. According to a result of comparisons, the knocking detecting and determining system determines an occurrence of engine knocking.

    摘要翻译: 公开了一种用于检测和确定用于内燃机的发动机爆震的系统和方法,其中从压电元件型爆震传感器得到的发动机振动检测信号的整个频带被分成多个频率区域或频带,振动 将根据各个频带提取的各个频率信号分量或振动检测信号指示的电平与阈值电平进行比较。 根据比较的结果,敲击检测和确定系统确定发动机爆震的发生。