Knock sensor: Notes

The knock sensor are attached to the crankcase on the left and right.

The knock sensor detects the structure-borne sound vibrations (knock). Combustion knock can damage the engine. The data of the knock sensor enable the engine control system to counteract knocking. In the petrol engine, pinging combustion processes can occur under certain conditions. These pinging combustion processes reduce the earliest possible ignition point and thus limit the power output and efficiency of the engine.