内燃机和电驱动的结合。内燃机直接连接至发电机。发电机电流为驱动电机供电。由于驱动马达的速度取决于内燃机的速度，因此可以通过油门踏板连续控制行驶速度。不需要离合器或变速箱。

         Combination of combustion engine and electric drive. The combustion engine is directly connected to a generator. The generator current feeds the drive motors. Since the drive motor speed is dependent of the combustion engine speed, the travel speed can be continuously controlled by means of the accelerator pedal. There is no need for a clutch or a shift transmission.