Patent ID: 6981475

Claim:
Process for controlling the opening and the closing of intake valves of a cylinder of an internal combustion engine comprising a first intake valve and a second intake valve per said cylinder, exclusive of any other intake valve, the first and second intake valves permitting a first and a second intake port, respectively, of the cylinder, respectively, to be closed or opened, and being actuated cyclically in terms of opening and closing, wherein the process comprises the following steps during the closing of the first and second intake valves of the cylinder: a first step of closing of the first intake valve, then a second step of closing of the second intake valve, at a time T after closing the first intake valve, the time, T, between the closing of the first intake valve and the closing of the second intake valve being sufficient to permit propagation toward the second valve of at least one overpressure wave generated in the first port by the closing of the first intake valve; wherein the time, T, is at least equivalent to a time necessary for an acoustic wave to travel over a path between the first intake valve and the second intake valve, using the first and second intake ports.