FREE PISTON INTERNAL COMBUSTION ENGINE Russian patent published in 2023 - IPC F02B71/04 F02B75/32 

FIELD: internal combustion engines.

SUBSTANCE: invention can be used in internal combustion engines. The free-piston internal combustion engine contains a cylinder-piston group, including cylinders (1), a block (2) of cylinders, inlet and outlet windows (3) and (4), a combustion chamber (7), pistons (8), injectors (9) and spark plugs (10). Each piston (8) contains upper and lower bases (12), (13). The upper base (12) of the piston is flat. The lower base (13) of the piston is conical. The top of the cone of the lower base of the piston has a semicircular shape. Under each piston (8) side and central disks (14), (15) are mounted. The central disk (15) is mounted on the shaft (16). The side disks (14) are mounted by means of satellites (18) on the hub of the central disk (15) on both of its lateral sides. On the rim of the side and central disks (14), (15), conical teeth are made with the same pitch. The tops of the teeth and the bottom of the cavity between the teeth have a semicircular shape. The rounding radius of the top of the teeth and the bottom of the cavity between the teeth of the side and central disks (14), (15) is equal to the rounding radius of the top of the cone of the lower piston base. The height of the conical part of the lower base (13) of the piston is equal to the height of the tooth of the side and central disks (14), (15). The width of the gear rim of the central disk (15) is equal to the width of the gear rims of the two side disks (14). The side and central disks (14), (15) are displaced relative to each other by 1/2 of their tooth pitch. The height of the teeth of the side and central disks (14), (15) is equal to the distance from the top dead center to the bottom dead center of the cylinder.

EFFECT: reduce vibration and improve engine reliability.

1 cl, 3 dwg