中文摘要：

分析了目前柴油机尾气中NO2测量方法及排放特性的现状，并在一台高压共轨增压中冷柴油机上进行了NO2排放试验。试验结果表明化学发光分析仪CLD和紫外分析仪NDUV均可用于柴油机NO2排放的测量，连续再生捕集器CRT的使用增加了柴油机的NO2排放以及NO2占NOx百分比。

英文摘要：

The Present status of measurement methods and emission characteristics of nitrogen dioxide （ NO2 ） in diesel engine exhaust are analyzed. In order to investigate the effects of aftertreatments on NO2 emissions of diesel engine, an experiment was carried out on a common rail, turbocharged and inter-cooled diesel engine with a continuously regenerating trap（CRT）. The results indicated that CLD and NDUV were feasible for the measurement of NO2 emissions of diesel engine and the use of CRT increased both the NO2 concentration and NO2/NOx ratio in exhaust of diesel engine.