ROTARY INTERNAL-COMBUSTION ENGINE Russian patent published in 1998 - IPC

FIELD: engine manufacture. SUBSTANCE: engine has case with linear working surface, admission and exhaust ports, rotor accommodating crossheads in its slots which are hinged to pistons, injector with nozzle in the form of flat slit having isosceles-triangle section in plane of its location. Engine is provided with spark plug placed in expansion sector. Rotor is composite structure with its grooved toroidal part joined to cylindrical part of rotor through heat-insulating gasket. Linear working surface may be formed by motion of center of part of circle over guide loop made of two semi- circles joined by parallel straight lines to form toroidal-cylindrical surface, or it may be formed by movement of center of part of circle over elliptical guide, or else, by motion of part of center of circle over Cassini oval guide having ratio, where a is constant; c is distance from center of Cassini oval to its focuses. EFFECT: reduced fuel consumption. 8 dwg