Crankshaft sensor

The crankshaft sensor is mounted at the rear of the crankcase. The DDE control unit provides the sensor with an earthing point (M_KWG) and a supply voltage of 5 V (U_KWG). The crankshaft sensor is designed as a Hall effect sensor.

On the crankshaft there is an increment gear which has 58 small permanent magnets around its perimeter. As the crankshaft rotates, these magnets move past the crankshaft sensor, thereby producing the crankshaft signal.

N57: The crankshaft sensor on N57 is also able to identify the direction of rotation of the engine. This enables a faster engine start.