FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed combination internal combustion engine has cyclic-action compressors fitted on common shaft with drive turbine, free thrust turbine installed on output shaft, combustion chambers coupled through valves with compressors and diverging nozzles to supply gases to turbines, and unit forming fuel delivery to combustion chambers. Outlet valve of combustion chamber setting into operation turbine compressors is made throttle type. Outlet valves of main combustion chambers are decompression type. Diffusers and variable-area nozzles are provided to increase effective efficiency of combusted fuel. EFFECT: increased effective efficiency. 5 dwg
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