Patent ID: 8746430
Filing Date: 2014-06-10
Classification: F16D

Abstract:
1. Method of feeding a clutch cylinder of a hydraulically actuated clutch system in a motor vehicle, wherein the clutch system comprises at least one clutch that can be closed by filling the clutch cylinder; and a hydraulic system that provides a system pressure and has a clutch control valve having an inlet and an outlet, wherein the clutch control valve comprises a valve cylinder with a second outlet, a control piston, a counter piston and a piston rod connecting the counter piston with the control piston; said method comprising the method steps of: applying the system pressure at the inlet of the control valve; providing the clutch pressure for actuating the clutch at the outlet; decreasing the system pressure at least prior to the filling of the clutch cylinder; controlling the pressure at the outlet of the control valve by the position of the control piston in axial direction within the valve cylinder; controlling the second outlet by the counter piston; and opening the second outlet in a disengaged position of the clutch releasing any pressure from the valve cylinder.