Patent ID: 8696307
Filing Date: 2014-04-15
Classification: F01D,F02B,F05D

Abstract:
1. A variable geometry turbine comprising a turbine wheel supported in a housing for rotation about a turbine axis, an inlet passageway defined between a first wall and second fixed wall, the first wall being moveable relative to the second wall in the direction of the turbine axis to vary the size of the inlet passageway, an array of vanes extending across the inlet passageway and fixed to one of the first and second walls, the first wall being moveable by a substantially annular axially moveable member that is supported by an substantially annular support, and at least one biasing member disposed between the moveable member and the support, the biasing member applying a substantially circumferentially distributed force in substantially the radial direction so as to maintain substantial concentric alignment of the annular support and the annular axially moveable member.