Method for operating a drivetrain

A method of up-shifting a drivetrain of a vehicle comprising an automatic transmission and a power engine, the method comprising the steps of:

• disengaging a clutch (4) connected between the automatic transmission (2) and the power engine (1);
• monitoring one of a speed gradient of the vehicle, a rotational speed gradient of a transmission input, a rotational speed gradient of a transmission output and a rotational speed gradient of a wheel of the vehicle;
• executing a gearshift;
• determining, as a function of one of a mass of the vehicle and a driving situation of the vehicle, at least one of a defined value and a defined value range of the one of the speed gradient of the vehicle, the rotational speed gradient of the transmission input, the rotational speed gradient of the transmission output and the rotational speed gradient of the wheel of the vehicle;
• adjusting a clutch torque from the power engine (1) to a torque which results in a desired value of one of the speed gradient of the vehicle, the rotational speed gradient of the transmission input, the rotational speed gradient of the transmission output and the rotational speed gradient of the wheel of the vehicle such that the desired value is at least one of equal to the defined value and within the defined range of values upon engagement of the clutch (4);
• and
• engaging the clutch (4).