Patent ID: 8092343

Claim:
Method for determining the filling pressure for a clutch comprising a control device for controlling the clutch, clutch linings, a clutch release spring and a hydraulic pressure system for closing the clutch against a force from the clutch release spring, wherein the clutch linings are brought at an engagement point of the clutch into abutment such that a further increase of the pressure in the pressure system would establish a torque transmittal capacity in the clutch, said method comprising the following steps performed by the control device: A pressurizing the pressure system with a filling pressure p Puls ; B determining an actual pressure p lst in the pressure system; C terminating pressurizing of the pressure system with the filling pressure p Puls when the actual pressure p lst has reached a turn off pressure p End and has therefore reached the end time t E ; D pressurizing the pressure system with an engagement point pressure p Stroke that can maintain the engagement point of the clutch; E determining the maximum value p max for the actual pressure p lst after the end time t E , wherein the maximum value p max is compared to a maximum admissible pressure p Maxpuls ; and F determining the filling pressure p Puls for the next filling in that an increment Δp or a change value K 1 is added to the filling pressure p Puls if the maximum value p max is lower than the maximum admissible pressure p Maxpuls , or subtracted from the filling pressure p Puls when the maximum value p max is higher than the maximum admissible pressure p Maxpuls .