DOUBLE-STROKE HEAT ENGINE Russian patent published in 1997 - IPC

FIELD: power engineering; conversion of heat energy released by burning fuel into mechanical energy. SUBSTANCE: engine has cylinder 1 with piston 3 kinematically linked with crankshaft, peripheral furnace 5 with air-supply system, filler system with admission valve 11 in the form of spring-loaded plunger whose space under plunger communicates through valve 15 controlled by centrifugal governor 16 with exhaust gas outlet piping; furnace air supply system is closed-circuit arrangement provided with receiver 6; cylinder 2 head is divided by partition 8 into two isolated spaces 9, 10 one of which mounts exhaust valve 11 and other space is provided with spring-loaded delivery valve 26; both space communicate with receiver 6; piping feeding air to furnace is inserted in piping for exhaust gas outlet from cylinder 1. EFFECT: improved performance characteristics and thermal efficiency due to using furnace gases as working medium. 2 cl, 3 dwg