Patent ID: 11384701

Abstract:
A method for calculating the mass of an overlap gaseous flow (MOVL), wherein the exhaust pressure is higher than the intake pressure, or in the case of scavenging (SCAV), wherein the intake pressure is higher than the exhaust pressure. The overlap gaseous flow (MOVL) is the flow which flows, in overlap conditions, through the intake valve and the exhaust valve of a cylinder of an internal combustion engine. At least one intake valve is driven so as to vary the lift (H) of the intake valve in controlled manner. The overlap condition is a condition in which the intake valve and the exhaust valve are both at least partially open. The method comprises calculating the mass of the gaseous flow (MOVL) which flows through the intake valve and the exhaust valve on the basis of the relation: MOVL=PERM*β(P/P0,n)*P0/P0_REF*(T0_REF/T0)1/2/n.