FIELD: machine building.
SUBSTANCE: invention relates to internal combustion engines. Proposed engine comprises cylinders 2 with pistons 3 and con-rods 4 arranged in housing 1, crankshaft 5 and rotor 6 fitted therein, and gas distribution mechanism including inlet 8 and outlet 9 and 10 valves and ignition plugs 11. To crankshaft 5 there is cage 12 connected to connecting rods 4 and to additional crankshaft 13 carrying gear 14 engaging via parasitic gear 15 with gear 16 of main crankshaft 5. Full cycle is performed in two turns of crankshaft 5. High pressure of working mixture in combustion chamber 17 is created by means of valves 8 and 9 during the first rotation. During the second half-turn with closed valve 9 and open 10 mixture is ignited by plug 11, and pressure of gases acting on channels 7 provides rotation of rotor 6. During next half-turns with open valves 9 and 10 cylinders are blown.
EFFECT: technical result is an increase in the engine life.
1 cl, 4 dwg
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