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Home > Terms > English, UK (UE) > Knock sensor (knock control system) (KCS)
Knock sensor (knock control system) (KCS)
By detecting high frequency vibrations that are early signs of pinging (pre-ignition) or knocking, a computerised engine control can retard the spark timing until the knock ceases. This allows an engine to take advantage of a high compression ratio (for more power) while reducing the risk of damage from hot weather, increased engine loads or lower grades of gasoline.
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