FOUR-STROKE INTERNAL COMBUSTION ENGINE Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: four-stroke internal combustion engine has housing 1 with inner curved surfaces 11 and 12 and output shaft 2 with cantilevers 13 and 14. Arc-like cylinders 3 and 4 are coupled with cantilevers 13 and 14. The cantilevers are pivotally connected with single-arm levers 15 and double-arm levers 16. Single-arm lever 15 is rigidly connected with rod 6 of first piston 5. The first arm of the double-arm lever is rigidly connected with rod 8 of the second piston 6. The second arm of double-arm lever 16 is pivotally connected with rod 7 of first piston 5 through tie 17. Pistons 5 and 6 interact with curved surfaces 11 and 12 through rollers 9 and 10. EFFECT: enhanced efficiency. 2 cl, 6 dwg