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

FIELD: engine engineering. SUBSTANCE: engine has a pair of cylinders with parallel axis volume and diameter of the first of which exceeds volume end diameter of the second one which is made of an extension of the first cylinder, the first and second pistons positioned within corresponding cylinders for reciprocation and having different diameters, means for supplying air to the first cylinder at suction stroke of its piston, means for supplying fuel to the second cylinder, and common combustion chamber provided with continuously operating means for ignition on its wall and coupled with the first cylinder through the first opening and with the second cylinder through the second opening. The second piston is made in block with the first one and made of a projection on the bottom of the last one for entering the second piston to the second cylinder when the first piston is in the bottom dead center. EFFECT: enhanced efficiency. 3 dwg