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

fYear

2011

fDate

15-17 April 2011

Firstpage

5748

Lastpage

5752

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-8036-4

Type

conf

DOI

10.1109/ICEICE.2011.5777076

Filename

5777076