农业工程学报2011，Vol.27Issue(8)：169-173,5.DOI:10.3969/j.issn.1002-6819.2011.08.028
Urea-SCR催化器压力损失及其对柴油机性能的影响
Pressure loss of urea-SCR converter and its influence on diesel engine performance
摘要
Abstract
Urea-SCR catalytic converter can effectively reduce the NOX emission of diesel engines, but meanwhile catalytic converter will cause some pressure loss in the exhaust system, which has negative influences on the engine performances. With the aid of BOOST (engine cycle simulation software) coupled with FIRE (computational fluid dynamic software), the pressure loss caused by converter was calculated and a modeling simulation and validity test were conducted on the power performance and fuel economy of diesel engine with urea-SCR catalyst. The results show that the pressure losses mainly come from the monolith resistance along the converter. The exhaust back pressure rising caused by SCR catalyst has some influence on the diesel fuel economy and power performance, which are reduced by about 5%. The results can provide a reference for optimum design of SCR catalytic converters and assembling.关键词
柴油机/排放控制/选择性催化还原( SCR)/催化转化器/排气背压/性能/仿真Key words
diesel engines/emission control/SCR/catalytic converters/back pressure/performances/simulations分类
能源科技引用本文复制引用
辛喆,王顺喜,张寅,李钊婧,张云龙,云峰..Urea-SCR催化器压力损失及其对柴油机性能的影响[J].农业工程学报,2011,27(8):169-173,5.基金项目
国家公益性行业项目(200903041-04) （200903041-04）
