Patent ID: 8251867
Filing Date: 2012-08-28
Classification: F16H,Y10T

Abstract:
1. A method of operating a drive train of a vehicle comprising at least an internal combustion engine, an engine clutch, an electric machine, either a single group or a multi-group manual transmission for shifting gears with at least one of synchronized and unsynchronized shift elements, an axle transmission, and an associated control device for controlling the gear shifts, the method comprising the steps of: using the electric machine to one of synchronize, assist with synchronization of and assist with shifting of the shifting gears in the manual transmission such that changes in a direction of rotation of transmission shafts of the transmission is taken into consideration: and if a first transmission shaft is rotating in an unintended direction, rotating a second transmission shaft in the same unintended direction such that the second transmission shaft synchronizes with the first transmission shaft.