SUPERCHARGER ROTOR WITH UNEVEN TIP SURFACE AND METHOD OF MANUFACTURING SAME

摘要

A supercharger assembly includes a rotor housing having an inner surface. A first and a second rotor are configured to rotate within the housing. The first and the second rotors each have multiple lobes. The lobes of the first rotor mesh with the lobes of the second rotor and the lobes of both rotors have tips that define at least a predetermined clearance with the inner surface of the rotor housing. At least a portion of one of the tips has an uneven surface to increase turbulence of air flow through the predetermined clearance. The increased turbulence of the air flow slows the air flow, thereby reducing leakage and increasing the efficiency of the supercharger assembly. A method of manufacturing a rotor for a supercharger assembly includes creating at least one recess in a tip of a lobe of the rotor to provide an uneven surface at the tip.