Patent ID: 8322979

Claim:
A turbocharger ( 1 ) comprising: a turbine housing ( 2 ) having a turbine wheel; a compressor housing having a compressor wheel; a cartridge (K) in the turbine housing ( 2 ) providing variable turbine geometry; a bearing housing ( 3 ) between the turbine housing ( 2 ) and the compressor housing and having a bearing for a shaft (W) carrying the turbine wheel and the compressor wheel; and a disk arrangement ( 4 ) between the cartridge (K) and the bearing housing ( 3 ), wherein the disk arrangement ( 4 ) comprises at least two structures ( 5 , 6 ), wherein an air gap ( 7 ) is formed between the at least two structures ( 5 , 6 ), wherein one of the structures ( 5 ) is a conical disk including a conical body extending outwardly at an angle from a center aperture ( 16 ) to an outer diameter, and wherein the other one of the structures ( 6 ) includes an inner conical region ( 9 ′) that extends outwardly from a center aperture ( 17 ) at an angle that is different from the angle at which the conical body extends such that the air gap ( 7 ) between the inner conical region ( 9 ′) and the conical body decreases in the outward direction, the inner conical region ( 9 ′) transitioning to an outer conical region ( 9 ) at a bend ( 8 ), the outer conical region ( 9 ) being angled relative to the inner conical region ( 9 ′) and extending therefrom to an outer diameter of the structure ( 6 ), the outer conical region ( 9 ) being substantially parallel to the conical body.