ENGINE Russian patent published in 1994 - IPC

FIELD: mechanical engineering; engines. SUBSTANCE: engine has body with cylinder 1 with hollow piston 2 installed for reciprocating and turning relative to axis of cylinder 1. Cranks 23 are coupled with side surface of piston 2 through spherical joints 22. Made on faces of piston 2 are cylindrical recesses whose depth is greater than piston stroke value. Recesses form working channels 15 and 18. Fitted in space of piston 2 is fixed partition 8 which forms additional working chambers 16 and 17. Holes 3 are made in walls of space and walls of recess of piston 2. Fitted in holes are spring-loaded sealing rings arranged coaxially with holes 3 on outer surface of piston 2. Inlet ports 5 and outlet ports 4 made in cylinder have form of part of trajectory of movement of holes 3 in piston. Engine can have at least one rod 7 rigidly connecting fixed partition 8 with cylinder 2 through slots made in faces of piston 2. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg