FIELD: mechanical engineering. SUBSTANCE: engine comprises rotor 3 with blades 5, piston 4 with blades 6, transfer mechanism, and mechanism for changing compression ratio of the engine. In operation of the engine blades 6 of piston 4 approach to or move away from blades 5 of rotor 3 resulting in changing volume of the combustion chambers, which are defined by the blades of the rotor and piston, and compression ratio of the engine. EFFECT: enhanced operational capabilities. 4 dwg
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