INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: engine has piping member 12 with first ring baffle 13 positioned coaxially to piston 17 within cylinder 2, second ring baffle positioned between hydraulic piston 11 and piping member 12 within the cylinder, first and second step-shaped plungers provided with steps of different diameters in openings of first 13 and second 9 ring baffles, movable stops 20 positioned between first ring baffle 13 and piston 17 in the wall of piping member 12. A combustion chamber is formed with inner surface of cylinder 2 and face surfaces of steps of grater diameter 16 of plunger 10. Face surfaces of piston 17, first ring baffle 13, steps of lesser diameter 15 of the first plunger and inner surface of the piping member form the first hydraulic space of variable volume. Face surfaces of second ring baffle 9, steps of lesser diameters 8 of the second plunger, inner surface of cylinder 2 and the second face surface of hydraulic piston 11 form the second hydraulic space of alternative volume. A hydromotor is piston-type and kinematically coupled with freewheel 22 of a crankshaft through link mechanism 26. EFFECT: enhanced efficiency. 1 dwg