Patent ID: 9581173
Date: 2017-02-28
CPC Classifications: F01D,F04D,F05D,Y10T

Claim:
1. A remanufactured compressor housing for a turbocharger, comprising: a cast compressor housing having a cylindrical cavity that has been cut within and around an inner portion of an inlet bore, the inlet bore defined in the housing along a centerline, the inlet bore extending between an edge of the housing and a first recirculation slot annular surface of the housing; a cylindrical liner disposed in the inlet bore, the cylindrical liner radially outwardly engaging a radially inward portion of the cylindrical cavity such that a radially inward surface of the cylindrical liner defines the inlet bore of the remanufactured compressor housing, the cylindrical liner defining a plurality of radially extending openings, each radially extending opening extending through the cylindrical liner; a cast inlet collar concentrically disposed entirely within the cylindrical liner in a direction along the centerline of the inlet bore, the inlet collar forming a plurality of blind holes extending in a radially inward direction at least partially through an outer surface of a wall of the cast inlet collar, each of the plurality of radially extending holes being aligned with a respective radial opening in the cylindrical liner; wherein the cast inlet collar is made from the same casting material as the remanufactured compressor housing; the inlet collar defining a second recirculation slot annular surface, the second recirculation slot annular surface disposed at an axial distance or gap from the first recirculation slot annular surface along the centerline to form a recirculation slot; a plurality of posts radially disposed through the cylindrical liner, each post extending through a respective radial opening in the liner and into a respective radially extending hole of the inlet collar, the plurality of posts being connected between the cylindrical collar and the cylindrical liner and operating to retain the inlet collar within the cylindrical liner.