Patent ID: 8725372
Filing Date: 2014-05-13
Classification: F16D,F16H,Y10T

Abstract:
1. A method for adjusting the point of engagement of a friction clutch in a motor vehicle, the motor vehicle having a combustion engine and a step variable transmission, the step variable transmission having a friction clutch, the friction clutch being controllably actuated by a clutch actuator, the step variable transmission including at least one gear ratio and at least one synchronizing shifting clutch, the at least one synchronizer shifting clutch being controllably actuated by means of a shift actuator for the engagement and disengagement of the at least one gear ratio, the method comprising the steps of: controllably actuating the friction clutch by means of the clutch actuator, controllably actuating the at least one synchronizer shifting clutch by means of the shift actuator, adjusting a set-point of the clutch actuator for the point of engagement of the friction clutch as a function of a speed gradient value, wherein the set-point of the clutch actuator is derived from a transitional state with the friction clutch actuated and the shifting clutch actuated, once the shifting clutch is opened, and wherein the transitional state is established by setting the clutch actuator and the shift actuator to a respective transitional value substantially at the same time.