采用不同后处理装置的柴油机减排效果分析  

Emission Reduction Effect of Diesels Using Different After-treatment Systems

作　　者：尹超[1] 高俊华[2] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]中国汽车技术研究中心

出　　处：《小型内燃机与摩托车》2011年第6期13-17,共5页Small Internal Combustion Engine and Motorcycle

摘　　要：对分别安装DOC+DPF和DOC+POC后处理装置的两台柴油机进行了排放试验。在有/无后处理装置两种状态下,通过ESC试验对两台发动机常规污染物CO、HC、NOx和PM以及非常规污染物NO2和SO2的排放水平进行检测和对比分析,此外对全负荷烟度水平也进行了检测。试验结果表明:DOC+DPF后处理装置对常规污染物的减排效果优于DOC+POC,但前者会导致NO2排放水平增大;二者都能够有效地降低SO2的排放;两种后处理装置都可以改善发动机高转速时的全负荷烟度,而且受油品等级影响很小。Emission tests were implemented to two light-duty diesels equipped with DOC ＋ DPF and DOC ＋ POC after-treatment systems, respectively. Under both conditions of with and without after-treatment system, conven- tional and inconventional emission pollutants and full-load smoke were detected and analyzed. Test results showed, DOC ＋ DPF have a better reduction effect than DOC ＋ POC to conventional emission, but may result in increasing of NO2 emission; both of the after-treatment systems can reduce SO2 emission; both of them can im- prove full-load smoke level of the engine at high speed and were influenced little by the grade of fuel.

关 键 词：柴油机 排放 DOC DPF POC NO2 SO2 

分 类 号：TK411.5[动力工程及工程热物理—动力机械及工程]