Invention Application
- Patent Title: TURBOCHARGER THRUST BEARING DEBRIS TRAP
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Application No.: US14520794Application Date: 2014-10-22
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Publication No.: US20160115909A1Publication Date: 2016-04-28
- Inventor: Louis P. Begin , Ran Wu , Dingfeng Deng
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Main IPC: F02M25/07
- IPC: F02M25/07 ; F04D29/051 ; F16C32/06

Abstract:
A turbocharger for an internal combustion engine includes a bearing housing and a rotating assembly arranged therein. The rotating assembly includes a shaft with a turbine wheel and a compressor wheel. The turbocharger also includes a thrust bearing assembly operatively connected to the shaft, lubricated by pressurized oil from the engine, and configured to transmit thrust forces developed by the turbine wheel to the bearing housing. The thrust bearing assembly includes a thrust plate having a first thrust face and a thrust washer having a second thrust face. An oil film is generated between the first and second thrust faces, and the first and second thrust faces rotate relative to each other and transmit the thrust forces to the bearing housing. The thrust plate and/or the thrust washer include a circumferential groove configured to trap oil-borne debris and minimize an amount of the debris in the oil film.
Public/Granted literature
- US09382877B2 Turbocharger thrust bearing debris trap Public/Granted day:2016-07-05
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