中文摘要：

柴油机氧化的效果催化(文档) 柴油机引擎排出物上的变换器用柴油和 B20 为二不变的速度在各种各样的负担在一张柴油机凳子上被调查。文档在烃(HC ) 和公司氧化是很有效的。在公司的近似 90%95% 减小和在 HC 的 36%70% 减小用 DOC 被认识到。特殊注意在从柴油机引擎射出的好粒子(PM2.5 ) 在元素的碳(EC ) 和器官的碳(OC ) 部分上集中于 DOC 的效果。PM2.5 的碳的作文被热 / 光的反射(岩山) 的方法分析。结果证明为从柴油的 PM2.5 的那全部的碳(TC ) ， OC 和 EC 排出物被文档通常减少。为柴油， TC 排出物减少了在取决于操作模式的文档以后的 22%32% 。在 TC 的减少在 EC 排出物在 OC 和 3%65% 减少被归因于 35%97% 减少。在低负担， PM2.5 的 OC/EC 比率的重要增加在 DOC 后面被观察。在从 B20 的 PM2.5 的碳的作文上的 DOC 的效果与柴油相比显示出不同趋势。在低负担， EC 排出物的细微增加和在在文档以后的 PM2.5 的 OC/EC 比率的重要减少为 B20 被观察。

英文摘要：

The effects of a diesel oxidation catalytic （DOC） converter on diesel engine emissions were investigated on a diesel bench at various loads for two steady-state speeds using diesel fuel and B20. The DOC was very effective in hydrocarbon （HC） and CO oxidation. Approximately 90%-95% reduction in CO and 36%-70% reduction in HC were realized using the DOC. Special attention was focused on the effects of the DOC on elemental carbon （EC） and organic carbon （OC） fractions in fine particles （PM2.5） emitted from the diesel engine. The carbonaceous compositions of PM2.5 were analyzed by the method of thermal/optical reflectance （TOR）. The results showed that total carbon （TC）, OC and EC emissions for PM2.5 from diesel fuel were generally reduced by the DOC. For diesel fuel, TC emissions decreased 22%-32% after the DOC depending on operating modes. The decrease in TC was attributed to 35%-97% decrease in OC and 3%-65% decrease in EC emissions. At low load, a significant increase in the OC/EC ratio of PMz.5 was observed after the DOC. The effect of the DOC on the carbonaceous compositions in PM2.5 from B20 showed different trends compared to diesel fuel. At low load, a slight increase in EC emissions and a significant decrease in OC/EC ratio of PM2.5 after DOC were observed for B20.