Patent ID: 6085527
Filing Date: 2000-07-11
Classification: F02B,Y02T

Abstract:
A turbocharger assembly including an integral assisting electric motor, comprising:a rotatable shaft assembly having an exhaust gas turbine wheel on one end and a compressor wheel on the other end and having a central length extending between shaft bearings at its turbine end and its compressor end;a housing encompassing the central length of said rotatably shaft and carrying said shaft bearings at its turbine end and at its compressor end and providing therebetween a support for stator windings for said integral assisting electric motor;a unitary magnet assembly of said integral assisting electric motor comprising a plurality of magnets carried between an inner core and an outer sleeve, said inner core providing magnet-locating surfaces for the plurality of magnets and having a reduced-thickness relieved portion under the magnet-locating surfaces, said inner core being carried by its ends outside of its reduced-thickness relieved portion on the central length of the rotatable shaft with the plurality of magnets in electromagnetic proximity to said stator windings;a turbine housing for directing exhaust gas into said exhaust gas turbine wheel for rotation of said rotatable shaft and said compressor wheel; anda compressor casing cooperating with said compressor wheel for compressing and directing compressed air from said turbocharger assembly.