Abstract: A two-cycle internal combustion engine is of the type having one cylinder (2), one piston (4) with connecting rod, one head (3) closing the cylinder (2) on the explosion chamber side, one crankcase (12) closing the cylinder (2) on the side opposite the explosion chamber, one spark plug (5) inserted in the head, and one burnt gas exhaust pipe (8) with inlet port opening onto the internal surface of the cylinder (2) near bottom dead center of the piston (4). One air input duct (6) with combustion chamber inlet ports (13) is located near bottom dead center of the piston (4) and inlet ports are located either in the cylinder (2) near the crankcase (12) or in the crankcase. One duct (7) lets lubrication oil into the air input duct (6) and one sensor (9) senses rotation speed and angular position of the drive shaft.

Abstract: The two-cycle internal combustion engine is of the type comprising one cylinder (2), one piston (4) with connecting rod, one head (3) closing the cylinder (2) on the explosion chamber side, one crankcase (12) closing the cylinder (2) on the side opposite the explosion chamber, one spark plug (5) inserted in the head, and one burnt gas exhaust pipe (8) with inlet port opening onto the internal surface of the cylinder (2) near bottom dead center of the piston (4) and is characterized by the presence in combination of one air input duct (6) with combustion chamber inlet ports (13) located near bottom dead center of the piston (4) and also with inlet ports located either in the cylinder (2) near the crankcase (12) or in the crankcase, one duct (7) for inlet of lubrication oil into the air input duct (6), one sensor (9) of rotation speed and angular position of the drive shaft, one fuel injector (1) inserted in the cylinder wall (2).