公开(公告)号：US10465604B2

公开(公告)日：2019-11-05

申请号：US15455699

申请日：2017-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Louis P Begin ,  Dingfeng Deng ,  Ran Wu

IPC: F02B33/44 ,  F02B39/14 ,  F02B37/00 ,  F02B33/40 ,  F01D25/18 ,  F16C33/66 ,  F16C17/18

Abstract: A turbocharger for an internal combustion engine includes a center housing and a bore defined by the center housing. The bore has a primary annular groove and a secondary annular groove configured to receive a fluid. A journal bearing is disposed within the bore proximate to a proximate end of the shaft such that the journal bearing, together with the rotating shaft, feeds fluid to the primary and secondary annular grooves. The shaft is further coupled to a turbine wheel and a compressor wheel. The shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bore about the axis. The primary and secondary annular grooves are each in fluid communication with a drain gallery.