US Patent 7980349 Drive system for vehicle

A drive system for a vehicle includes a motor, an internal combustion engine, a generator, a power distribution mechanism distributing a driving force of the internal combustion engine to driving wheels and the generator, an electronic control unit controlling the motor and the internal combustion engine, and rotation members connected to first driving wheels constituted by one of front wheels and rear wheels and including an output element of the power distribution mechanism, wherein the internal combustion engine driving the first driving wheels via the power distribution mechanism, the motor driving second driving wheels not driven by the internal combustion engine, the rotation members are driven by the internal combustion engine.