摘要
本文针对柴油机的尿素选择性催化还原系统(Urea-SCR)展开相应的研究。以Matlab软件为仿真平台建立了前馈控制模块、氨存储模块、催化器模型、闭环控制模块的SCR闭环控制策略,并对控制策略在欧洲瞬态测试循环(ETC)进行验证。结果表明:催化器下游的NOx浓度为1.5001g/(k W·h),NH3的浓度为22ppm。能够达到国Ⅴ排放标准。
In this paper, the Urea selective catalytic reduction system （Urea-SCR） for diesel engine is developed. Matlab software was used as the simulation platform to establish the SCR closed-loop control strategy of feedforward control module, ammonia storage module, catalyst model and closed-loop control module, and the control strategy was verified under the European transient test cycle （ETC）. The results showed that the NOx concentration downstream of the catalyst was 1.5001 g/（kW· h） and the concentration of NH3 was 22 ppm, which can meet the national V emission standards.
作者
程开荣
吴恒
程晓章
谷林强
何家胜
CHENG Kai-rong;WU Heng;CHENG Xiao-zhang;GU Lin-qiang;HE Jia-sheng(Anhui Quanchai Power Co.,Ltd.,Chuzhou 239500,China;School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Jincheng Automobile Decoration Design and Development Co.,Ltd.,Hefei 231131,China)
出处
《内燃机与配件》
2018年第16期12-15,共4页
Internal Combustion Engine & Parts
关键词
柴油机
尿素选择性催化还原
控制策略
NOx浓度
排放标准
diesel engine
selective catalytic reduction of Urea
control strategy
NOx concentration
emission standards
