Patent ID: 8394000
Filing Date: 2013-03-12
Classification: F16H,Y10T

Abstract:
1. A method of operating a vehicle drivetrain ( 1 ) having a drive motor ( 9 ), a transmission ( 10 ) and a drive output ( 2 ), and when shifting a gear in the transmission ( 10 ) from an actually engaged gear to a target gear, the gear shift being carried out with assistance of both a frictional shift element and an interlock-type shift element in a flow of force in the vehicle drivetrain ( 1 ), the method of completing the gear shift from the actually engaged gear to the target gear comprising the steps of: engaging only one of the interlock-type shift element and the frictional shift element in the flow of force in the vehicle drivetrain while disengaging only the other of the frictional shift element and the interlock-type shift element from the flow of force in the vehicle drivetrain; monitoring an actual speed during the gear shift, the actual speed being at least approximately equivalent to a transmission input speed (n_t); adjusting the actual speed (n_t_ist and adjusting the actual speed (n_t_ist, n_t_ist