PUMP IMPELLER OF ENGINE COOLING SYSTEM

摘要

A pump impeller of an internal combustion engine cooling system comprises a mounting hub to which a flange is rigidly connected, at that on the working surface of the flange in radial direction not less than eight arranged in straight way blades are provided, and not less than four unloading channels placed between the pairs of neighboring blades at angular distances equal to each other, at that the total area of channels is not less than 6 % of the area of surface of the impeller back side.