Abstract: A system and method for controlling a multi-cylinder internal combustion engine having at least one automatically controllable airflow actuator and an exhaust gas recirculation (EGR) system including an EGR valve include determining a desired manifold pressure based at least in part on position of the automatically controllable airflow actuator and controlling the EGR valve such that a measured manifold pressure approaches the desired manifold pressure. In one embodiment, the automatically controllable airflow actuators include a charge motion control valve and a variable cam timing device. In other embodiments, the automatically controllable airflow actuators may include variable valve lift devices, variable valve timing devices, or any other device that affects the residual exhaust gases within the cylinders.

Abstract: A system and method for controlling a multi-cylinder internal combustion engine having at least one automatically controllable airflow actuator and an exhaust gas recirculation (EGR) system including an EGR valve include determining a desired manifold pressure based at least in part on position of the automatically controllable airflow actuator and controlling the EGR valve such that a measured manifold pressure approaches the desired manifold pressure. In one embodiment, the automatically controllable airflow actuators include a charge motion control valve and a variable cam timing device. In other embodiments, the automatically controllable airflow actuators may include variable valve lift devices, variable valve timing devices, or any other device that affects the residual exhaust gases within the cylinders.