ADIABATIC ENGINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion piston engines.

SUBSTANCE: proposed adiabatic engine increases absolute efficiency by 15-25% owing to increased amount of heat converted into mechanical work. Proposed adiabatic engine contains crankcase 1 with fitted-on cylinder 2 cooled by water jacket 4. False cylinder 6 with intake valve 7 and exhaust valve 9 and nozzle 8 is secured on cylinder 2 through heat insulating gasket 5. False cylinder 6 with false piston 10 feature low thermal conductivity and form variable volume hot chamber 11. Compensating clearance 12 is left between cylinder 2 and false piston 10. Heat insulating gasket 14 isolates hot false piston 10 from cold piston 15 carrying compression rings 16. Cold piston 15 interacts with cold cylinder 2 and provides compression in chamber 11 by means of compression rings 16. Piston 15 conveys mechanical work to consumer by means of connecting rod 17 and crankshaft 18. Low thermal conductivity of false cylinder 6 and false piston 10 and no cooling of false cylinder and false piston provide adiabatic thermal expansion process in chamber 11.

EFFECT: increased efficiency owing to more complete conversion of heart energy into mechanical work.

4 cl, 1 dwg