Title :
Closed-loop control strategy of NH3-SCR for diesel engines
Author :
Tan, Pi-qiang ; Chen, Fei ; Hu, Zhi-yuan ; Lou, Di-ming ; Zhang, Zheng-xing
Author_Institution :
Sch. of Automobile, Tongji Univ., Shanghai, China
Abstract :
SCR technology is one of effective methods to reduce NOx emissions from diesel engines. In this paper, a SCR system model is established based on AMESim software and a mathematical model of SCR control system is established in the Matlab/Simulink environment, and a complete system is formed by setting communication modules between the two softwares. The SCR closed-loop control strategy is studied, and the PI control strategy is introduced to build a closed-loop SCR control system model and the simulation is performed. AdBlue dosing, NOx conversion ratio and NH3 leakage at the different exhaust temperature are studied with different control parameters.
Keywords :
PI control; closed loop systems; diesel engines; AMESim software; AdBlue dosing; Matlab/Simulink environment; NH3 leakage; NH3-SCR; NOx conversion ratio; NOx emissions; PI control; SCR system model; closed-loop SCR control system model; closed-loop control strategy; communication modules; diesel engines; mathematical model; Chemistry; Diesel engines; Mathematical model; Software; Temperature control; Thyristors; Closed-loop control strategy; Diesel engine; NOx emission; SCR;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5777076
