Patent ID: 8561403

Claim:
A super-turbocharger that is coupled to an engine comprising: a turbine that generates turbine rotational mechanical energy from enthalpy of exhaust gas produced by said engine; a compressor that compresses intake air and supplies compressed air to said engine; a shaft having portions that are connected to said turbine and said compressor, and a portion having a shaft traction surface; a traction drive disposed around said shaft traction surface, said traction drive comprising: a plurality of planetary rollers having a plurality of planetary roller traction surfaces that interface with said shaft traction surface so that a first plurality of traction interfaces exist between said plurality of planetary roller traction surfaces and said shaft traction surface; a ring roller that is rotated by said plurality of planet rollers through a second plurality of traction interfaces; a transmission, that is mechanically coupled to said traction drive and said engine, that transfers a portion of turbine rotational mechanical energy to said engine or a portion of said engine rotational mechanical energy to said traction drive depending upon operating conditions of said engine.