内燃机工程2018，Vol.39Issue(1)：81-85,5.DOI:10.13949/j.cnki.nrjgc.2018.01.013
柴油机DPF后颗粒物排放研究
A Study on Diesel Particle Number Emission Downstream of DPF
摘要
Abstract
Particle number emission tests with China Ⅴ diesel fuel were conducted on a Euro Ⅵ diesel engine equipped with DPF in ESC,ETC,WHSC and WHTC tests.Results show that during the transient processes of those tests,the large absolute peaks of the engine's exhaust back pressure change rate result in instantaneous peaks of the exhaust particle number concentration although the exhaust gas is purified by DPF.The number of particles in the average diameter range of 50 nm to 80 nm accounts for 90% of the total number of particles emitted over the ESC test cycle,while the number of particles in the average diameter range of 60 nm to 110 nm accounts for 87% of the total number of particles emitted over the WHSC test cycle. The number of particles in the average diameter range of 10 nm to 70 nm accounts for 80% of the total number of particles emitted over the ETC test cycle,while the number of particles in the average diameter range of 10 nm to 40 nm and 50 nm to 60 nm accounts for 85% of the total number of particles emitted over the WHTC test cycle.关键词
柴油机颗粒捕集器(DPF)/颗粒物数量浓度/颗粒物平均粒径Key words
DPF/particle number concentrations/average particle diameter分类
能源科技引用本文复制引用
王建海,熊兴旺,于津涛,高俊华..柴油机DPF后颗粒物排放研究[J].内燃机工程,2018,39(1):81-85,5.
