Patent ID: 8784076

Claim:
A turbocharger ( 1 ) comprising: a turbine casing ( 2 ) of a turbine wheel; a variable turbine geometry cartridge (K) arranged in the turbine casing ( 2 ); a bearing housing ( 3 ) arranged between the turbine casing ( 2 ) and a compressor casing of a compressor wheel, and in which is arranged a bearing arrangement for a shaft (W) which supports the turbine wheel and the compressor wheel; a disk spring ( 4 ) arranged between the cartridge (K) and the bearing housing ( 3 ), the disk spring ( 4 ) including at least two material layers ( 5 , 6 ), one material layer ( 6 ) being a thermal protection layer for the other material layer ( 5 ), the other material layer ( 5 ) being a disk spring layer ( 5 ); and an insulator ( 17 ) including a solid thermal insulating structure, a first portion of the insulator ( 17 ) being arranged between the material layers ( 5 , 6 ) and a second portion of the insulator ( 17 ) extending beyond a radially outer end of at least one of the material layers ( 5 , 6 ).