Reverse Gear: Notes

The active gearbox does not have a mechanical reverse gear. Instead, reverse is made possible in ECVT 1 mode. To do, the electric machine B is activated as a motor, in the opposite direction of rotation as for forward driving. Depending on the state of charge of the high voltage battery, driving backwards in pure electric mode is possible. If necessary, the combustion engine can also be activated to provide, with the help of electric machine A, sufficient electrical energy for electric machine B. During reverse, there is also a mechanical drive path from the combustion engine to the gearbox output. However, the torque of the combustion engine transmitted through this path would propel the vehicle forwards. Therefore, it is compensated for by electric machine B. Thus during reverse with the combustion engine switched on, the active gearbox behaves like a power-split hybrid drive.