摘要
利用电子低压冲击器,研究了配装DPF的轻型柴油车使用不同燃油时,DPF前后颗粒物排放状况以及颗粒物数量浓度和质量浓度在粒径上的分布。结果显示,车辆使用硫质量分数高的燃油时排放的颗粒物的数量和质量都比车辆使用硫质量分数低的燃油时大,但经DPF过滤后,不论使用何种燃油,颗粒物的数量和质量都会大幅减少,尤其以粒径在0.04μm以上的颗粒物更为明显,车辆使用硫质量分数低的燃油时DPF的过滤效率比车辆使用硫质量分数高的燃油时高。
Using electronic low pressure impactor（ELPI）,the particulate matter（PM） emission and its size distribution of both number concentration and mass concentration in diesel vehicle with diesel particulate filter（DPF） when using different fuels,and before and after DPF are studied respectively.The results show that both number and mass of PM emission when vehicle using high sulfur content fuel are more than that when vehicle using low sulfur content fuel.But after DPF both number and mass of PM greatly reduce,in particular for PM with a size larger than 0.04 μm no matter which fuel is used.The efficiency of DPF when vehicle using low sulfur content fuel is higher than that when vehicle using high sulfur content fuel.
出处
《汽车工程》
EI
CSCD
北大核心
2010年第12期1030-1032,1037,共4页
Automotive Engineering
关键词
柴油机
硫质量分数
过滤效率
粒径分布
数量浓度
质量浓度
diesel engine
sulfur mass fraction
filtration efficiency
size distribution
number concentration
mass concentration
