PEDAL OPERATED ACTUATION SYSTEM ASSISTED BY AN ELECTRICAL MOTOR

摘要

A fluid pressure actuation system in which a piston (13) moves in a master cylinder bore (12) under the operation of a pedal (15) to displace hydraulic fluid from the bore to actuate a function such as a vehicle clutch or brake. A sensor (27) senses the position/movement of the pedal and an electrical actuator (25) such as a stepless motor is directly mechanically connected with the pedal or another component connected with the piston of the master cylinder. An electrical control means (26) is provided which receives signals from the sensor (27) and applies a controlled output to the electrical actuator (25) to provide direct mechanical assistance to the movement of the piston (13) depended on the pedal position/movement.