Patent ID: 6419464
Filing Date: 2002-07-16
Classification: F01D,F02C,F05D

Abstract:
A variable geometry turbocharger assembly comprising:a turbine housing having an inlet for exhaust gas and an outlet, a volute connected to the inlet, and an integral outer nozzle wall adjacent the volute; a turbine wheel carried within the turbine housing and attached to a shaft; a plurality of vanes disposed within the turbine housing, each vane having a hole disposed within a first axial vane surface substantially parallel to the outer nozzle wall, each vane hole receiving a respective post therein, said post projecting outwardly from the outer nozzle wall, the vanes further having actuation tabs extending from a second axial vane surface opposite from the first vane surface; a rotatable annular unison ring positioned axially adjacent the vanes, the unison ring having a plurality of slots each configured to accommodate a respective tab therein, wherein rotation of the unison ring causes each tab to slide within a respective slot, moving each vane radially within the turbine housing relative to the shaft, such radial vane movement being facilitated by pivoting movement of each vane about a respective post.