INTERNAL COMBUSTION ENGINE WITH COMPRESSION IGNITION Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: engine has cylinder, piston, head, and combustion chamber formed of central and periphery spaces which are separated from each other by ring projections when piston is in the top dead center. The combustion chamber is provided with accumulating space provided in the bottom of the piston and made of toroidal space with ring neck which is overlapped by the projection provided on the head. Burning core is made up by air which supplied from the accumulating space. EFFECT: enhanced mixing and efficiency. 3 cl, 4 dwg