Knock Sensors

Knock sensors create a voltage signal based on the vibrations caused by detonation. The computer uses this signal to retard timing when spark knock occurs.

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  • An automated data acquisition system continuously monitors sensor output to ensure it responds with appropriate voltage at the specified frequency rate

  • The Sensor body is precision machined to tune the resonant frequency to the engine knock frequency

  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation

  • Designed to respond to knock frequencies up to 1000Hz and shifts in engine knock frequency, making it more effective over a broad range of vehicle conditions

  • The Piezoelectric disc is the heart of the sensor. It is a sintered ferroelectric ceramic disc precision ground to tight physical tolerance

  • Primary thermistor wire leads resistance welded to connector terminals to ensure a reliable electrical connection in an environment of high vibration and changing temperature