HYDRAULIC ASSISTED CONTROL DEVICE, APPLICATION TO A CLUTCH CONTROL OF A MOTOR VEHICLE, AND HYDRAULIC CONTROL ASSISTANCE METHOD USED THEREBY

摘要

The device (4) has a piston (11) mounted in a body (10), where one end of the piston is connected with a control rod (3) while another end forms a mobile wall of a chamber (12) that contains pressurized hydraulic fluid. A portable unit (14) is mounted between the piston and the body to move according to displacement direction of the piston. An elastic element (16) i.e. helicoid spring, is placed between the portable unit and the former end of the piston. A locking unit (17) alternatively locks the portable unit with the body or the piston. An independent claim is also included for a method for assisting a hydraulic control of a hydraulic control device.