Turbocharger bearing assembly

  • US 4,902,144 A
  • Filed: 05/02/1989
  • Issued: 02/20/1990
  • Est. Priority Date: 05/02/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A turbocharger bearing assembly for rotatably supporting a turbocharger shaft within a bearing bore formed in a turbocharger center housing, said assembly comprising:

  • a pair of rotationally floating journal bearings within said bearing bore and rotationally supporting said shaft;

    a generally cylindrical, rotationally floating bearing spacer carried about said shaft and axially interposed between said journal bearings, said spacer having opposite ends defining a pair of axially outwardly presented inboard thrust surfaces for engaging axially inboard faces of said journal bearings to maintain said journal bearings in precision axial spaced relation; and

    a pair of axially inwardly presented outboard thrust surfaces defined by a pair of thrust members carried with said shaft for engaging axially outboard faces of said journal bearings;

    said inboard and outboard thrust surfaces having outer diameters substantially less than the outer diameters of said journal bearings.

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