Control-oriented modeling of diesel engine gas exchange

Modeling and control of the gas exchange process in modern diesel engines is critical for the promotion and control of advanced combustion strategies. However, most modeling efforts to date use complex stand-alone simulation packages that are not easily integrated into, or amenable for the synthesis of, engine control systems. Simpler control-oriented models have been developed, however in many cases they do not directly capture the complete dynamic interaction of air handling system components and flows in multi-cylinder diesel engines with variable geometry turbocharging and high pressure exhaust gas recirculation. This paper describes a simple, low order model of the air handling system for a multi-cylinder turbocharged diesel engine with cooled exhaust recirculation, validated against engine test data.