METHOD FOR CONTROLLING A DRIVE TRAIN OF A MOTOR VEHICLE

摘要

The invention relates to a method for controlling a drive train of a motor vehicle with an internal combustion engine (1), an electrical machine (3) operable in motor mode and in generator mode, a clutch (2) arranged between the internal combustion engine (1) and the electrical machine (3), and an automatic gearbox (5) arranged between the electrical machine (3) and the drive wheels (6), wherein a gear change in the automatic gearbox (5) can be initiated manually by the driver. The method is characterized in that during overrun mode of the motor vehicle, in which the electrical machine (3) is operated in generator mode, the following steps are performed, after a manual initiation of the gear change from a source gear into a target gear by the driver: - the clutch (2) is at least partially disengaged if it is not already disengaged; - the speed (nVM) of the internal combustion engine (1) is brought to a speed level (nZ) corresponding to the target gear and to the current speed of the motor vehicle and continues to be regulated; - the gear change is performed in the automatic gearbox (5); - the clutch (2) is engaged upon reaching a synchronous speed (nVM, nE) of the internal combustion engine (1) and the electrical machine (3). The recuperation can thereby be preserved during the gear change and the driver obtains feedback corresponding to that of a non-hybridized or non-recuperative motor vehicle after his initiation of the gear change.