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
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
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Knock Sensor: Description and Operation
Knock Sensor (KS):
The
Knock Sensor (KS) is a piezoelectric device that detects excessive engine vibration indicating an engine knock condition. A voltage signal is produced from the resonation of the KS and is transferred to the powertrain control module. The signal is used to regulate ignition timing to compensate for the condition.
