COMPOSITE SUPERCHARGER ROTORS AND METHODS OF CONSTRUCTION THEREOF

摘要

A supercharger rotor with reduced rotational inertia may result in increased performance of a supercharger. The rotor may include composite material and may be extrusion molded, injection molded, or otherwise molded or laid-up. In certain embodiments, the rotor may include a core with a central portion and one or more radially extending portions. The core may be extruded or formed of stacked sheets. A molded portion of the rotor, including one or more lobes, may be molded over a corresponding one of the radially extending portions. In other embodiments, a main portion of the rotor includes one or more lobes but no central hole nor a corresponding shaft extending between ends of the main portion. Instead, stub shafts are attached to the ends of the main portion. The increased performance may include decreased noise, decreased cost, increased reliability and/or durability, increased thermal efficiency, an increased power-to-weight ratio, etc.

主权项

1. A rotor for a roots-style device, the rotor comprising:
an axis of rotation; a core including a central portion and at least one radially extending portion, the core extending between a first end and a second end; and a molded portion including at least one lobe, the at least one lobe molded over at least a portion of a corresponding one of the at least one radially extending portion of the core, the molded portion extending between a first end and a second end, wherein the at least one lobe includes an outer portion and an inner portion, wherein the inner portion is positioned between the outer portion and the axis of rotation, and wherein the inner portion includes a reduced section portion.