Abstract: A rotary engine includes a compressor having a first rotor, a first hinged vane, an air intake port and an air outlet and an expander having two-way check valve, a second rotor, a second hinged vane, a one-way check valve, a compressed air tank and a compressed air valve interposing between the compressor and the expander, where the first and second rotors have a first end contacting a housing and the other end spaced apart from the inner surfaces of the housing, where the first and second hinged vanes have one end hinged to the housing and the other end contacting outer surfaces of the rotating rotor for operation, and a combustion chamber formed as an airtight space by a depressed surface of the housing of the expander and a surface of the hinged vane.

Abstract: The aim of the present invention is to provide a separate-type rotary engine which significantly reduces vibrations and weight as compared to conventional cylinder-type internal combustion engines, which is simple in configuration and thus reduces manufacturing costs, which directly generates rotary force rather than through a crankshaft to increase mechanical efficiency, and in which a compressor and a force generator are separated from each other to enable the simple design of an engine suitable for a variety of uses. The engine of the present invention shown in FIG.