Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Knock Sensor: Description and Operation
LOCATION Sensor mounted in engine block.
PURPOSE Sensor informs Powertrain Control Module (PCM) detonation has occurred.
PCM retards timing until detonation is no longer detected.
Knock Sensor Operation:
OPERATION Sensor generates a signal when spark knock, (pre-ignition, detonation, or pinging) occurs in combustion chamber, (due to vibration of the piezo electric crystal).
