PISTON OF INTERNAL COMBUSTION ENGINE Russian patent published in 2021 - IPC F02F3/00 F16J1/04 

FIELD: internal combustion engines.

SUBSTANCE: piston of the internal combustion engine has a tool that ensures low vibration and low noise of the piston and the engine as a whole. The tool is made in the form of a solid U-shaped insert in the inner cavity of the piston with the upper round part and the side parts. The side parts are made in the form of quad springs (5) with curvature. The fixed part of springs (5) is insert base (4), and the free parts are bosses (6) of the piston pin with conical support surfaces. Springs (5) with bosses (6) are isolated from piston skirt (2). Insert base (4) is fixed by the outer transverse plane to inner plane (14) of the piston bottom. The cylindrical plane of the insert rests on upper – heat belt (1) on the inner side.

EFFECT: technical result is reducing not only the noise of mechanical origin from impacts in the rod-crank mechanism, but also the noise of gas-dynamic origin from the combustion process, caused, due to a sharp change in pressure, by impacts in the joints of the rod-crank mechanism.

1 cl, 5 dwg