Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
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Knock Sensor: Description and Operation
Knock Sensor:
The
knock sensor is a piezoelectric accelerator accelerometer. The sensor uses the resonant frequency to mechanically amplify the engine knock frequency (5 - 6 KHz). The sensor has a thin circular piezoelectric ceramic disk which is bonded to a metal diaphragm. Electrical connections are made through a two pin integral connector.
