公开(公告)号：US20040000287A1

公开(公告)日：2004-01-01

申请号：US10439187

申请日：2003-05-16

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Fabio Borean ,  Lorenzo Chiosi

IPC: F02B015/00

CPC classification number: F01L9/025 ,  F01L9/021 ,  F01L2001/34446 ,  F01L2800/06

Abstract: An internal-combustion engine with two inlet valves for each cylinder is provided with an electronically controlled system for actuating said valves. The electronic control unit 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 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.