A method and system for controlling an internal combustion engine

摘要

A system 12 and method for determining the charged air mass in a cylinder 14 of an internal combustion engine 10 are disclosed. The system 12 includes an electronic control unit 58 configured to determine a temperature of the combination of charged air and recirculated exhaust gas inducted into the cylinder 14. The electronic control unit 58 is further configured to determine a total mass flow rate of the combination of inducted air and recirculated exhaust gas based on a pressure in an intake manifold 22 of the engine 10 and the previously determined temperature and to determine the mass of charged air in the cylinder 14 from the total mass flow rate. <IMAGE>