摘要
随着国五排放标准在全国范围内实行,对柴油车后处理系统要求越来越严格。针对国五标准设计选择还原催化(SCR)系统控制器,主要的方法是研究SCR系统尿素喷射控制策略,在MATLAB/Simulink中建立SCR系统催化器模型以及开环控制系统模型,通过实验验证控制模型的准确性,并利用MATLAB/Simulink自动生成算法层代码;另外通过编写相关底层模块并移植其与算法层接合,实现SCR系统软件层的设计。最后将设计好的SCR控制器分别在欧洲测试稳态循环(ESC)和欧洲瞬态测试循环(ETC)下对装有SCR系统的柴油机进行测试。
With the implementation of the national fifth emission standard around the country, the post-processing system of diesel truck will become more stringent. In this paper, the controller of the selective catalytic reduetion（SCR） system will be designed to meet the national fifth emission standard. The main method is to study the injection control strategy of SCR system. Then the catalyst model of SCR system and the open loop control system model are established in MATLAB/Simulink and the accuracy of the control model is verified by experiments. The layer code of algorithm is generated by MATLAB/Simulink automatically. Additionally, the paper transplants the preparation of related underlying module with the algorithm layer to achieve the software layer of SCR system. Finally, the diesel engine with SCR system will be tested in the European test steady-state eycle（ESC） and Europe tran- sient test cycle（ETC）.
出处
《电子技术应用》
2018年第2期27-31,共5页
Application of Electronic Technique
