Knock Sensors
The use of knock sensors allows the MS S52 control module to maintain the optimum ignition timing curve for all engine operating conditions. If detonation occurs, the signal from the knock sensors allows the engine control module to retard the timing to prevent engine damage.
Each knock sensor produces a varying voltage signal that is dependent on the level of noise produced by the cylinders. This voltage signal input is processed by the control module and if the level exceeds the programmed parameters for knock, the timing is retarded until the knock is eliminated.