Urea-SCR系统周期性喷射控制策略试验研究

胡杰; 欧文中; 王天田; 颜伏伍

胡杰，欧文中，王天田，颜伏伍.Urea-SCR系统周期性喷射控制策略试验研究[J].内燃机工程,2017,38(2):48-53.

Experimental Research on Periodic Injection Control Strategy for Urea-SCR System

DOI：

Key Words:diesel engine urea-SCR peak conversion efficiency periodic injection

Author Name	Affiliation
HU Jie，OU Wenzhong，WANG Tiantian，YAN Fuwu	Automotive Components Technology Hubei Province Collaborative Innovation Center， Hubei Key Laboratory of Advanced Technology of Automotive Parts， Wuhan University of Technology， Wuhan 430070， China

摘要点击次数: 2568

全文下载次数: 2071

Abstract:The phenomenon of a peak NOx conversion efficiency found in a test for NOx conversion under engine steady state condition was analyzed theoretically. A periodic injection control strategy for a urea-SCR system was put forward based on this phenomenon to promote NOx conversion efficiency. A test was designed and the comparison was made of the proposed urea-SCR periodic injection control strategy and a commercial urea-SCR injection control strategy. The result shows the former strategy has a remarkable improvement in terms of NOx conversion efficiency， urea injection dosing， NH3 slipping， and energy efficiency to urea ratio， which has a great significance in optimizing the injection control strategy of a urea-SCR system.

查看全文查看/发表评论下载PDF阅读器