ROTARY PISTON INTERNAL COMBUSTION ENGINE Russian patent published in 1995 - IPC

FIELD: manufacture of engines. SUBSTANCE: cylindrical housing is divided in two sections: compressor section and working section. Arranged in each section are cylindrical rotors 4 and 5 rigidly connected with shaft of rotary piston engine and provided with projections which are in contact with cylindrical surface of housing 1. Mounted in each section on the shafts parallel to shaft 3 of rotary piston engine are gates 8 and 9 whose outer cylindrical surfaces are get in contact with cylindrical surfaces of rotors 4 and 5. Gates 8 and 9 driven by cam mechanisms from engine shaft 3. Bodies of gates 8 and 9 are provided with circular grooves for admitting and discharging the working medium. Working medium is bypassed between sections via passage 17 provided with valve gear (or spool valve gear). During rotation of shaft 3, rarefaction is created behind projection of rotor 4 and before this projection (in way of its motion), working medium is compressed till projection of rotor 4 approaches gate 8. Then valve gear (or spool valve gear) opens passage 17 through which the compressed working medium is bypassed to working section. After closing of the valve (spool valve), working medium is ignited. On other side of projection of rotor 5, combustion products are forced out through the passage in gate 9. Gates 8 and 9 are raised with the aid of cam mechanisms when projections of rotors 4 and 5 pass under them. EFFECT: simplified shape of housing interior and simplified construction of rotor-piston connection with engine shaft. 5 dwg