Invention Grant
- Patent Title: Turbocharger bearing
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Application No.: US16455061Application Date: 2019-06-27
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Publication No.: US10954996B2Publication Date: 2021-03-23
- Inventor: Louis P. Begin , Dingfeng Deng , Yuchuan Liu
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Vivacqua Crane
- Main IPC: H02K7/08
- IPC: H02K7/08 ; H02K5/16 ; F16C17/02 ; F16C17/10 ; F16C17/18 ; F16C33/10 ; F01D25/18 ; F01D25/16 ; F04D29/057 ; F16C17/26

Abstract:
A fluid bearing for operably connecting a shaft to a center housing of a turbocharger is provided. The fluid bearing includes a single-piece bearing sleeve defining a bore between first and second ends that each form a thrust face. The sleeve includes first and second bearing portions proximal to an associated one of the first and second ends, and a shank connecting the first and second bearing portions. Each of the first and second bearing portions includes an outer bearing surface defining a maximum outer diameter, and each of the first and second bearing portions includes an inner bearing surface defining a minimum inner diameter for radially supporting the shaft in the bore. The inner bearing surface is a continuous surface free of grooves. The sleeve has a wall thickness defining oil passages spaced from the inner bearing surface and configured to supply oil to the thrust face.
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