不同工况对高压共轨燃油喷射柴油机排放PM2．5组分浓度的影响  

Effect on Emission of Diesel Engine Component Concentration of PM2.5 in Different Conditions

作　　者：许庆峰[1] 沈晴[2] 李轲[1] 张静[1] 张伟[1] 

机构地区：[1]军事交通学院汽车指挥系,天津300161 [2]军事交通学院基础部,天津300161

出　　处：《军事交通学院学报》2012年第8期50-53,共4页Journal of Military Transportation University

摘　　要：利用台架试验法，对1台符合欧Ⅳ排放标准的柴油机在稳态工况下排放PM2．5及其载带离子、元素和碳组分的排放浓度进行了试验研究，结果表明：PM2．5中质量浓度最高的为OC和离子，其次为元素和EC；元素浓度较高的几种为A1，Mg，Ca，Ti，Fe，Si，Na和K，在额定转速下，PM2．5中si，Na，Al，K，Mg，Ca，Fe和rri随着负载增加而增：大；PM2．5阴离子的含量要高于阳离子的含量且PM2．5中阴离子含量要高于粗颗粒，可得出发动机排放的颗粒物表现为酸性；闭合分析表明PM2．5的主要组分为有机物。The using of dynamometer test, studying of the concentrations, tape ions, elements and the emission concentra- tion of carbon components in PM2.5 emitted from a Euro 4 diesel engine under 11 steady operation conditions were conduc- ted. The results show that the concentration of the highest quality were the OC and ion in PM2.5, followed by the elements and EC; A1, Mg, Ca, Ti, Fe, Si, Na and K were higher elements concentration. At rated speed, Si, Na, A1, K, Mg, Ca, Fe and Ti, increased with load increasing in PM2.5. The concentrations of anions were higher than cations in PM2.5 and the anions in PM2.5 were higher than that in PM10 indicating the DPM were acidity especially for fine particles. Mass closure analysis shows that OM was most abundant in PM2.5.

关 键 词：柴油机 工况 PM2.5 排放浓度 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程]