Centrifugal compressors for exhaust gas turbochargers

Abstract

The compressor (1) has a sleeve-like adapter element (10) sectionally including a surface contour (13) at an axial front side (12), which faces towards a compressor wheel (6) in an axial fixing position. The surface contour is formed complementary to an axial wheel-surface contour (9) so that a width (w) of a passage gap (14) is adjusted by axially moving an adapter element in a fastening section (11) in a non-fixed condition of the adapter element. The gap is axially formed between the adapter element and the compressor wheel along the surface contours facing towards each other. The adapter element is made of a plastic material. Independent claims are also included for the following: (1) a turbocharger (2) a method for manufacturing a radial compressor.

Description

technical field

[0001] The present application relates to a centrifugal compressor for an exhaust gas turbocharger, in particular for an exhaust gas turbocharger of an internal combustion engine, and to an exhaust gas turbocharger having such a centrifugal compressor. The invention also relates to a method of producing such a centrifugal compressor. Background technique

[0002] Exhaust turbochargers are used, for example, in internal combustion engines to increase the pressure during gas exchange. Such an exhaust gas turbocharger can be provided with a centrifugal compressor having a compressor wheel through which gas can flow and be compressed. For this purpose, the compressor wheel can comprise an axial inlet side and a radial outlet side and be arranged in the compression space. An intake channel leads to the inlet side of the compressor wheel and, for internal combustion engines, to the low-pressure area of ​​the fresh air system equipped with the exhaust gas turbocha...

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