Borgwarner Inc.

Austin L Hoke

Frederick Michael Huscher

Brock Fraser

Allen Stoner

In a lubrication and cooling system for an electric machine operably driven by a turbine, a rotatable shaft may extend through an electric machine housing and a first and second bearing may be operably spaced apart from each other and coupled to the rotatable shaft. Furthermore, an electromagnetic rotor may be coupled to the rotatable shaft and disposed between the first and second bearings. A stator may be fixedly attached within the electric machine housing such that the electromagnetic rotor freely rotates along with the rotatable shaft. Additionally, a fluid passage defined in the electric machine housing delivers a portion of fluid to lubricate the first and second bearings and the remaining portion of fluid to circumferentially flow around the stator such that the fluid is in thermal communication with an outside surface of the stator to help maintain a desired operating temperature of the electric machine.

Cooling and lubrication system for a turbocharger

An electromechanical is provided which includes an electromagnetic rotor, a housing with an interior opening with a stop, a first bearing mount for supporting a first bearing rotatably mounting the rotor in the housing, a cover connected with the housing having a boss having an interior providing a second bearing mount supporting a second bearing rotatably mounting the rotor in the housing, a stator having a clearance fit within the housing interior opening, the stator being axially limited in a direction toward such first bearing mount by the housing stop, the stator having an axial clearance in a direction toward the cover boss, and an elastomeric spacer connected on an extreme end of the boss compliantly filling the axial clearance between the stator and the boss positioning the stator in an axial direction and restricting movement of the stator in an angular direction within the housing opening.

Growing community of inventors

Candler, NC, United States of America

Austin L Hoke