Arrangement for controlling a frictional connection which can be engaged and dis-engaged in a gear-changing appliance of an automatic discrete step gearbox

摘要

In an automatic discrete step gearbox of a motor vehicle, the working pressure of a frictional connection (clutch or brake) to be engaged is set at the beginning of a gear-change by an electronic control unit in accordance with a specified required value variation and additionally as a function of correction values. The correction values are determined as a function of deviations between the required transmission torque value and the actual transmission torque value of the frictional connection.