Method for Controlling a Longitudinal Acceleration During and Assisting Operation of a Driver Assistance System in a Motor Vehicle, Controller Unit and Motor Vehicle Having Such a Controller Unit

A method for controlling a longitudinal acceleration with an active driver assistance system in a motor vehicle that has an automatic transmission, the method comprising:

• detecting a shift initiation signal that characterizes an upcoming gear shifting, with which a shifting starting point is defined, and a synchronization function is assigned a progressive time value;
• detecting, at a shifting i initiation point, a current actual wheel torque value;
• obtaining a maximum target wheel torque value by adding a first predefined wheel torque offset value to this detected actual wheel torque value;
• obtaining a minimum target wheel torque value by adding a second predefined wheel torque offset value to a target wheel torque moment obtained from a longitudinal acceleration regulator;
• continuously reducing a torque difference value for the difference between the target wheel torque value and the minimum target wheel torque value by the synchronization function based on the time value over a synchronization period between the shifting initiation point and a predefined synchronization point, in that a minimum target wheel torque value amount is continuously reduced, until the torque difference value at the synchronization point is zero;
• wherein a target drive torque value is obtained during the synchronization period, which:
• allows an increase in the actual wheel torque value to no more than the maximum target wheel torque value, and
• only allows a decrease in the actual wheel torque value to the minimum target wheel torque value.