Patent ID: 8272992

Claim:
A method of operating a drive train of a motor vehicle, wherein the drive train comprises at least one hybrid drive having an internal combustion engine and an electric motor, a clutch being connected between the internal combustion engine and the electric motor, and an automatic transmission being located between the hybrid drive and an output, the method comprising the steps of: initiating the method while transferring torque from the internal combustion engine, via the automatic transmission, to the output to drive the motor vehicle; disengaging the clutch connected between the internal combustion engine and the electric motor to carry out a shift after reducing a load at the internal combustion engine and after a reducing torque that is transmitted between the internal combustion engine and the electric motor, subsequently carrying out a gear change with the automatic transmission, and thereafter increasing the torque that is transmitted by the clutch, connected between the internal combustion engine and the electric motor, increasing a load at the internal combustion engine, and engaging the clutch connected between the internal combustion engine and the electric motor; and transferring a load with the electric motor, at least one of, before carrying out the gear change in the automatic transmission and after carrying out the gear change in the automatic transmission.