An internal-combustion engine with two inlet valves for each cylinder and an electronically controlled system for actuating the two inlet valves in differentiated and alternating ways

摘要

An internal-combustion engine with two inlet valves (V I ) for each cylinder is provided with an electronically controlled system for actuating said valves. The electronic control unit (16) is programmed so as to control in a differentiated way the two inlet valves according to a first law of opening and closing and a second law of opening and closing, which are different from one another. The electronic control means (16) are moreover designed for reversing with respect to one another the laws of opening and closing of the two inlet valves at each operating cycle of the engine or else with a periodicity equal to more than one operating cycle of the engine, so that each of the two inlet valves alternately follows the first law and the second law of opening and closing.