Compressor i.e. exhaust turbocharger, has blade limiting flow channel for inlet air to be compressed, where front side and rear side of upper surface area of blade are differentially formed and arranged in rotational direction

摘要

The compressor has a compressor wheel (7) including a blade (31) distributed over a circumference, and designed in a radial or axial manner. The blade limits a flow channel for inlet air to be compressed, and a front side and a rear side of an upper surface area of the blade are differentially formed, and are arranged in rotational direction. The front side of the upper surface area of the blade arranged in the rotational includes a groove. The upper surface area of the blade is partially grounded and polished.