Adaptive Management Control for Urea-SCR System of Clean Diesel Vehicle

摘要：

　　A Urea-SCR system can significantly reduce the tailpipe-out nitrogen oxide (NOx) of a diesel engine vehicle.However,future emission legislations in Europe and U.S.A require the Urea-SCR system both to improve NOx conversion efficiency and to suppress ammonia(NH3)-slip at the same time.The robustness of the management control of the Urea-SCR system has to be significantly improved in regard to the part-to-part variations of Urea-solution injector and the aging effect of a SCR catalyst.Consequently,the management control was composed of a feedforward controller,a NH3 storage controller and a feedback controller using an NH3 sensor located downstream of the SCR catalyst,and a unique adaptive algorithm was applied to improve the robustness of the management control.As a result,it could improve the robustness of NOx conversion efficiency,and reduce NOx to the lower level than emission legislations requirement while keeping NH3-slip at slight level.

关键词： Adaptive control Diesel engine Urea-SCR system

作者: YASUI Yuji HAGA Hisao NAKAJIMA Koichi MATSUNAGA Hideki

作者单位: Honda R&D Co.,Ltd. Automobile R&D Center,Tochigi 321-3393,Japan

会议类型: 国际会议

会议名称: The 33th Chinese Control Conference第33届中国控制会议

会议地点: 南京

会议语种:英文

页码: 285-290

在线出版日期: 2014-07-28（万方平台首次上网日期，不代表论文的发表时间）