Patent ID: 6449950
Filing Date: 2002-09-17
Classification: F01D,F02B,F02C,F04D,F05D,F16C,Y02T

Abstract:
A rotor and bearing for a turbocharger for internal combustion engines comprising:a turbine wheel carried in a turbine housing to receive exhaust gas from an internal combustion engine, the turbine wheel incorporating a hub portion attached to a shaft extending through a center housing; a compressor impeller attached to the shaft opposite the turbine and carried within a compressor housing; a bearing portion of the shaft adjacent the turbine hub including two bearing lands separated by a relieved section, the lands received within a pinned semi-floating unitary bearing carried in a bearing bore in the center housing, the unitary bearing including a first thrust bearing face engaging the turbine hub; a permanent magnet for an electric motor carried by a spacer collar which is received over a collar portion of the shaft extending from the bearing portion opposite the turbine hub and the unitary bearing further incorporates a second thrust face engaging the spacer collar.