Patent ID: 6599087
Filing Date: 2003-07-29
Classification: F01D,F05D,F16J

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 center housing connected at one of its ends to the turbine wheel and including a bearing assembly disposed therein for rotatably carrying the shaft; a turbine housing flange plate interposed between the center housing and turbine housing; a plurality of vanes disposed within the turbine housing; an annular unison ring positioned axially adjacent the vanes, the unison ring having a plurality of slots that each accommodate a respective tab therein; and an actuator shaft disposed within the center housing and turbine housing backing plate for causing rotation of the unison ring, the actuator shaft including a seal ring disposed therearound and positioned within the turbine housing backing plate, the seal ring having a relieved back surface directed towards the center housing.