INTERNAL COMBUSTION ENGINE-REVENUER Russian patent published in 2006 - IPC F02B53/08 F02G3/02 F01C11/00 

FIELD: mechanical engineering; rotary internal combustion engines.

SUBSTANCE: proposed engine contains two variable-volume chambers and external combustion chamber. One variable-volume chamber provides intake and expansion, and the other, exhaust and delivery. Combustion chamber communicates with variable-volume chambers by means of delivery and bypass channels with valves. According to invention, combustion chamber is provided with free displacer installed for movement and made in form of pistons dividing combustion chambers into two parts operating in series. Each part communicates with variable-volume chambers through delivery and bypass channels, and one part of chamber is furnished with additional scavenge channel with valve.

EFFECT: simplified design, improved efficiency of internal combustion engine.

4 cl