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2013年 第7卷 第2期

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《能源前沿（英文）》 >> 2013年 第7卷 第2期 doi: 10.1007/s11708-013-0251-0

Transient emission simulation and optimization of turbocharged diesel engine

1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China; Computer Department, Changchun Finance College, Changchun 130028, China; 2. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China

发布日期： 2013-06-05
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In order to alleviate the pressure of experimental research of turbocharged diesel engine under transient operations, a whole process simulation platform for turbocharged diesel engine under transient operations was established based on the multi-software coupling technologies of Matlab/Simulink, GT-Power, STAR-CD and artificial neural network. Aimed at the contradiction of NO and soot emission control with exhaust gas recirculation (EGR) of turbocharged diesel engine under transient operations, on this simulation platform, a transient EGR valve control strategy was proposed, which adjusted the EGR valve in adjacent level based on the feedback of its opening according soot control limit under transient operations. Simulation and experimental results prove that the transient emission optimization effect of this control strategy is obvious. On the one hand, compared with the previous control strategy, which closed the EGR valve during the whole transient operations, soot emission is slightly increased by 9.5%, but it is still 9% lower than the control limit. On the other hand, compared with the previous control strategy, NO transient emission is reduced by 44%.

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