초록 ▼

An integral turbocharger-electric motor assembly permits the elements of an operating electric motor and turbocharger to be easily assembled into a relatively compact and reliable operating unit. To act as an electric motor rotor, the turbocharger shaft carries a magnet assembly in its central porti

An integral turbocharger-electric motor assembly permits the elements of an operating electric motor and turbocharger to be easily assembled into a relatively compact and reliable operating unit. To act as an electric motor rotor, the turbocharger shaft carries a magnet assembly in its central portion between the shaft bearings, in such proximity to the stator windings to provide electromagnetic coupling for the effective conversion of electric energy applied to the stator winding into rotational force applied by the magnet assembly to the turbocharger shaft. The magnet assembly includes a plurality of permanent magnets located around a central core and secured against centrifugal force on a non-magnetic outer sleeve. Such magnet assemblies are preferably formed as a unit that can be assembled onto the turbocharger shaft by retaining an annular arrangement of motor magnets in an assembly between central and outer sleeves.

대표청구항 ▼

[ We claim:] [1.] 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 i

[ We claim:] [1.] 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.