Patent ID: 8322978
Filing Date: 2012-12-04
Classification: F01D,F05D

Abstract:
1. An exhaust-driven turbocharger for a motor vehicle, comprising: at least one of a variable turbine and a compressor geometry a vane-mounting ring with guide vanes mounted rotatably thereon, a guide cane cage which forms at least part of a flow duct and at the same time a mount for the vane-mounting ring, the guide vane cage disposed in the turbine housing and having a first annular step portion and a second annular step portion fixedly connected to the first annular step portion, the first annular step portion disposed in the turbine housing to surround at least a portion of the guide vanes in a close-fitting, spaced-apart manner, the guide vane cage fixedly connected to and arranged between a turbine housing and a turbine mounting base by a compression force when the turbine housing and the turbine mounting base are releasably connected together, wherein the first annular step portion comprises a first step flange portion and the second annular step portion comprises a second step flange portion which includes a plurality of spacer elements integrally formed therewith, each one of the plurality of spacer elements extends radially from at least an outer peripheral edge portion of the second annular step portion and projects axially from the at least an outer peripheral edge portion of the second annular step portion towards the first step flange portion such that a radially-extending spacer element surface of each one of the plurality of spacer elements is disposed between the first step flange portion and the second step flange portion so that an axial gap is formed between the turbine housing and the second step flange portion and wherein the guide vane cage is clamped by a compression force between the turbine housing and the mounting housing of the exhaust-driven turbocharger when the turbine housing and the mounting housing are connected together, the compression force being applied to the spacer elements.