Abstract
ABSTRACTWith the rapid development of the global economy, more vehicle ownership leads to the increasing of environmental pollution in recent years. In response to this matter, exhaust gas recirculation (EGR) has been used in most modern diesel engines, to control NOx emissions effectively. In this work, a dual closed-loop EGR control system was modeled by coupling the one-dimensional cycle simulation and the logic under Matlab/Simulink environment. The intake airflow and EGR valve position are regarded as the control targets in the key control logic concept. The results show that the deviation between simulation and experimental results is smaller than 5%, which can meet the needs of practical application. Moreover, the accuracy and feasibility of the code generated by the Real-Time Workshop module are verified simultaneously.
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