Patent ID: 7270203

Claim:
A power system for a motor vehicle having an internal combustion engine, the power system comprising: an electric machine further comprising: a stator having coils for receiving ac electrical power to provide a magnetic field; a permanent magnet rotor spaced from the stator to define a first air gap relative to an axis of rotation for the permanent magnet rotor; an uncluttered rotor spaced from the permanent magnet rotor to define a second air gap relative to an axis of rotation for the permanent magnet rotor; at least one secondary core assembly spaced from the uncluttered rotor by a third air gap wherein the secondary core assembly is disposed around an axis of rotation for the uncluttered rotor to allow induction of a slip energy current in the secondary core assembly without inducing a rotational energy current; and a gearing arrangement for coupling the internal combustion engine to wheels on the vehicle via the permanent magnet rotor and the uncluttered rotor thereby providing a means for the electric machine to both power assist and brake in relation to the output of the internal combustion engine.