INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: proposed internal combustion engine has at least one cylinder with valves and spark plug, cylinder cover, piston and piston guide. Bellows and spring with flexible bottle are installed coaxially in cylinder. Ends of bellows and spring with flexible bottle are coaxially secured, respectively, on cylinder cover and on piston so that cooling chamber is formed between bellows and flexible bottle, and hermetically closed chamber is formed between bellows, piston and inner surface of cylinder to convert energy of fuel mixture combustion into movement of piston along geometric axis of cylinder. Shape of cylinder, bellows, spring and flexible bottle can be different. Flexible prismatic bottle is made of elastic material and is reinforced by strong cord threads helically laid relative to bottle axis. EFFECT: improved efficiency of internal combustion engine. 13 cl, 2 dwg