Patent ID: 7784451

Claim:
An apparatus for improving the tracking bandwidth of an air handling system of an internal combustion engine, the air handling system comprising a fresh air regulator configured to regulate the flow rate of fresh air into a combustion chamber of the engine and an exhaust gas recirculation (EGR) regulator for regulating the flow rate of EGR gas into the combustion chamber, comprising: an intake charge module configured to determine a desired air intake flow rate into the combustion chamber based at least partially on a desired oxygen concentration in the combustion chamber; an EGR system module configured to determine a desired EGR gas flow rate into the combustion chamber based at least partially on the desired oxygen concentration in the combustion chamber; and a pre-filter module configured to modify the desired air intake flow rate and the desired EGR gas flow rate based at least partially on predetermined transient response characteristics of the air handling system; wherein the desired air intake flow rate is achievable by commanding the fresh air regulator to achieve the modified air intake flow rate and the desired EGR gas flow rate is achievable by commanding the EGR regulator to achieve the modified EGR gas flow rate.