Air-cooled rotary engine

An improved rotary engine having a rotor having N lobes, an intake port, an exhaust port, and a housing with respect to which the rotor is mounted for rotational motion relative to the housing, the housing having N+1 lobe-receiving regions and (i) a peak disposed between each pair of adjacent N+1 lobe-receiving regions and (ii) a pair of sides, the N+1 lobe-receiving regions further configured in relation to the rotor to successively receive the N lobes as the rotor rotates relative to the housing, so as to establish chambers associated with each one of the N+1 lobe-receiving regions, wherein at least one chamber of the established chambers is configured to handle, in succession, intake, compression, combustion, expansion, and exhaust phases, wherein the improvement comprises:

• configuration of the housing in relation to the rotor so that at least one chamber of the established chambers, other than the at least one chamber configured to handle intake, compression, combustion, expansion, and exhaust phases, is dedicated to a single function selected from the group consisting of cooling, compressing, and pumping.