Clutch mechanism for use between crank shaft and primary shaft of gear box in motor vehicle, has control unit controlling fluid supplying circuit according to measurement signal from sensor to control advanced position of piston

摘要

The mechanism has a fluid supplying circuit supplying fluid to a piston actuator (126) to move a piston (130) along an axis (XX') between an advanced position to place a diaphragm (112) in a clutch position, and a delay position to place the diaphragm in a declutching position. A control unit controls the supplying circuit according to a measurement signal from a sensor (134) to control the advanced position of the piston to a predetermined advanced position, where the sensor provides the signal from measurement of magnetic field sensible to displacement of a stopper (132) along the axis.