Patent ID: 8777809

Claim:
A method for operating a transmission device ( 3 ) of a vehicle drivetrain ( 1 ) with a drive engine ( 2 ), a transmission ratio in the transmission device ( 3 ) being automatically changeable during an operating state characteristic of the vehicle drivetrain ( 1 ) depending on a comparison of current operating state parameters of the vehicle drivetrain ( 1 ) with additional operating parameters stored in a control unit, and being manually changeable depending on a driver's request, the method comprising the steps of: changing the transmission ratio of the transmission device ( 3 ) and starting a timer when a driver's request to change the transmission ratio is detected; upon determining a continuous driver's request to change the transmission ratio proceeding from an actual transmission ratio value toward either a larger or smaller transmission ratio value over a predefined period, performing the comparison of the current operating parameters with the additional operating parameters stored in the control unit; and depending upon the comparison, at least one of changing the transmission ratio toward a larger transmission ratio value in comparison to the additional operating parameters stored in a control device at higher vehicle speeds, and variably delaying sequential, cyclical transmission ratio changes depending on at least one of vehicle deceleration and a braking pressure in a region of a vehicle brake.