Friction clutch's engaging point adjusting method for double clutch transmission for motor vehicle, involves adjusting reference value of clutch actuator for engaging point based on speed gradient values

摘要

The method involves actuating a set of friction clutches (16, 18) by a set of clutch actuators (K1-K2). A set of shifting clutches (SK1-SK4) for engaging and releasing a gear stage of a multi-step transmission (10) is actuated by a switching actuator, and a speed gradient is measured. Each friction clutch is released, and another speed gradient is measured. The speed gradients are linked for determining a speed gradient value, where a reference value of the clutch actuators is adjusted for an engaging point of the friction clutch based on the speed gradient values.