Central releasing unit for determining position of piston of motor vehicle, has ferrous magnet metal element coupled with plunger, and sensor fixedly arranged at housing, where movement of metal element is identified by sensor

摘要

The unit (1) has a piston (3) axially moves opposite to housing (2), and an inner ring (5.1) of a clutch release bearing (5) fixed at piston. A ferrous magnet metal element (8) is coupled with the plunger and a sensor (9) is fixedly arranged at the housing. A movement of the ferrous magnet metal element is identified by the sensor that includes a magnet coupled with a solenoid, so that the modification of a magnetic field is detected by the movement of the ferrous magnet metal element. The metal element is arranged at a flange (7) that is connected with the piston.