Clutch actuation system with locking mechanism and method of controlling engagement of a clutch

摘要

A clutch actuation system for engaging and disengaging a clutch includes a hydraulically-actuated piston movable in response to hydraulic pressure to an apply position in which the piston is operable to engage the clutch. An electro mechanical actuator is movable in response to electric power to contact the piston at the apply position such that the clutch is maintained in an engaged state by the actuator, thereby permitting hydraulic pressure to be released. A method of controlling engagement of the clutch is also provided.