Knock Control

DESCRIPTION
Signals produced by the knock sensors are compared to set values in the Digital Motor Electronic (DME) programming. When these predetermined values are reached, that combustion process is viewed as "knocking" and the timing is immediately retarded (e.g. 3 deg.). This can occur for one or more cylinders as needed. The ignition retard occurs well before the knock poses a hazard for the engine.

Following knock retardation, the ignition is advanced step by step until the optimum timing point is reached, or until knock is again detected.