A method of operating a vehicle driveline having a continuously split power transmission with secondary coupling

摘要

The invention relates to a method for operating a vehicle drive train (1) with a continuously split power transmission (3) with secondary coupling. A torque applied in the region of an output (4) can be supported in the open operating state of reversing clutches of a reversing gear (5) via a range gear (7) in the region of a variator (8). In the presence of a request to separate the power flow between a prime mover (2) and the output (4) is checked whether a vehicle is on a hillside, the power flow between the engine (2) and the transmission (3) with a positive query result At the latest when reaching a speed of the output (4) is equal to zero separated by opening the reversing clutches, while the operative connection between the output (4) and the variator (8) via the range transmission (7) is maintained.