Hydraulic clutch actuator for a motor vehicle

摘要

A cylindrical housing (18) is integrated in the hydraulic duct and accommodates an inner piston (26) axially moving inside an outer piston (24) and provided with a longitudinally positioned groove (39) with a diameter changing during the clutch releasing and engaging operation. The housing (18) is divided by the pistons into a first pressure chamber connected to the transmitting cylinder and a second chamber (29) connected to the receiving cylinder.