ENGINE Russian patent published in 1997 - IPC

FIELD: engine engineering. SUBSTANCE: engine consists of a stator whose semi-axles have a freely mounted rotor-cylinder in which a piston is received. A gear wheel is rigidly secured inside the piston. The gear wheel has inner engagement and rolls over the fixed gear eccentrically secured to the semi-axle of the stator. All of the motions are controlled by the eccentric shaft which engages the large gear, concentrically mounted in the cylinder, through small gear. When the cylinder is in rotation the piston also rotates synchronously and moves to define working chambers. EFFECT: enhanced efficiency. 14 dwg