Patent ID: 8480357
Filing Date: 2013-07-09
Classification: F01D,F05D

Abstract:
1. A variable geometry turbocharger assembly, comprising: a turbine housing defining an inlet for exhaust gas and an outlet; a turbine wheel within the turbine housing and attached to a shaft; a nozzle defining a nozzle passage for exhaust flow to the turbine wheel; a plurality of vanes disposed within the nozzle passage, each vane mounted on a bearing pin and each vane configured to pivot about an axis defined by the respective bearing pin; a center housing connected to the turbine housing and comprising an outer pilot surface defining an outer radius; at least one guide pin secured to the center housing adjacent to the outer pilot surface, each guide pin defining a wear surface that extends to a radius which is larger than the outer radius of the outer pilot surface proximate each guide pin; and a unison ring connected to the vanes and rotatable substantially about a longitudinal axis defined by the shaft for pivoting the vanes about the respective axes, the unison ring defining a radially inner surface;