SYSTEM FOR CONTROLLING AN EGR VALVE OF AN INTERNAL COMBUSTION ENGINE BASED ON A FLOW MODEL

摘要

System for controlling an EGR valve of an internal combustion engine based on a flow model, the flow model estimating an EGR flow rate outgoing from the EGR valve to control an opening/closing of said EGR valve, on the basis of operating parameters of the internal combustion engine; the method being characterized in that it models said EGR valve as a nozzle and it calculates a relative equivalent outflow area to correct said estimation of the EGR flow rate.