Abstract: A current generating unit configured to extend the range of an electric vehicle, including an internal combustion engine formed by a rotary-piston engine, and at least one electric machine cofigured to be excited by permanent magnets and arranged coaxially to the internal combustion engine. The internal combustion engine and the electric machine are arranged as a unit and include a common housing and a common cooling system, with at least one cooling channel arrangement disposed on the electric side and configured to cool an electric component in the cooling circuit of the cooling system upstream of at least one cooling channel arrangement of the internal combustion engine.

Abstract: An electric machine for a current generating unit configured to extend the range of an electric vehicle. The electric machine includes a cylindrical housing part produced by casting, which is configured to accommodate a stator and a rotor. The cylindrical housing part contains at least one cooling channel arrangement through which a coolant flows.

Abstract: A current generating unit configured to extend the range of an electric vehicle, including an internal combustion engine formed by a rotary-piston engine, and at least one electric machine cofigured to be excited by permanent magnets and arranged coaxially to the internal combustion engine. The internal combustion engine and the electric machine are arranged as a unit and include a common housing and a common cooling system, with at least one cooling channel arrangement disposed on the electric side and configured to cool an electric component in the cooling circuit of the cooling system upstream of at least one cooling channel arrangement of the internal combustion engine.