FIELD: manufacture of engines. SUBSTANCE: pair of blades kinematically coupled with output shaft through rocking mechanisms are arranged in cylindrical housing to form working spaces. Each mechanism has semi-shaft with fitted-on blades installed for rotation relative to semi-shaft. Planet pinion is arranged in cup and is installed square to axis of semi-shaft. Pinion is in meshing with fixed gear secured on housing. Hinge-mounted in planet pinion is rod installed for rotation in plane passing through axis of semi-shaft. Cup has toothed rim engaging with gear secured on shaft. Bracket with pin is secured on planet pinion axle. Pin is arranged with angular displacement relative to rod and it gets into slot of balance weight embracing the cup. Counterweight is freely installed in cup for rotation around planet pinion axle. Counterweight has slot into which other end of rod is inserted. EFFECT: enlarged operating capabilities. 2 dwg
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