Pressure adaptation method for electrohydraulic automatic gearbox

摘要

The pressure adaptation method is used for a gearbox with pressure regulation at a first clutch during an initial changing-up phase for increasing the input revolutions (nT) and subsequent closure of a second clutch for transferring the load from the first clutch during a second phase. The time taken for the revolutions to reach a higher value is compared with a given time, the obtained differences summated and the switching pressure level (pAB) for the first clutch adapted when the summated difference reaches a limit value.