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1. (WO2013154852) TURBOCHARGER WITH THRUST BEARING PROVIDING COMBINED JOURNAL AND THRUST BEARING FUNCTIONS

Pub. No.:    WO/2013/154852    International Application No.:    PCT/US2013/034775
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Tue Apr 02 01:59:59 CEST 2013
IPC: F02B 39/00
F02B 39/14
F02B 37/00
F16C 17/00
Applicants: BORGWARNER INC.
Inventors: WARD, Daniel N.
Title: TURBOCHARGER WITH THRUST BEARING PROVIDING COMBINED JOURNAL AND THRUST BEARING FUNCTIONS
Abstract:
Turbochargers typically have separate hydrodynamic journal and thrust bearings. A turbocharger thrust bearing for a turbocharger is provided that merges the function of a journal bearing into a thrust bearing while maintaining the thrust bearing function to produce a turbocharger with a reduced axial space envelope. Such a thrust bearing includes a bore contoured to have a plurality of taper-land pairs distributed circumferentially about the bore. As a result, the axial length of the turbocharger bearing housing and shaft can be reduced.