%0 Journal Article
%T Effects of Oxygenated Fuels on Emissions and Carbon Composition of Fine Particles from Diesel Engine<br>含氧柴油对柴油机排放及细颗粒物碳质组分的影响
%A SHI Xiao-yan
%A HE Ke-bin
%A ZHANG Jie
%A GE Yun-shan
%A TAN Jian-wei
%A <br>石晓燕
%A 贺克斌
%A 张洁
%A 葛蕴珊
%A 谭建伟
%J 环境科学
%D 2009
%I 
%X Acetal (1,1-diethoxyethane) is considered as an alternative to ethanol as bio-derived additive for diesel fuel, which is miscible in diesel fuel. Biodiesel can improve the oxygen content and flash point of the fuel blend of acetal and diesel fuel. Two oxygenated fuels were prepared: a blend of 10% acetal+90% diesel fuel and 10%acetal+10% biodiesel+80% diesel fuel. The emissions of NOx, HC and PM2.5 from oxygenated fuels were investigated on a diesel engine bench at five modes according to various loads at two steady speeds and compared with base diesel fuel. Additionally, the carbon compositions of PM2.5 were analyzed by DRI thermal/optical carbon analyzer. Oxygenated fuels have unconspicuous effect on NOx emission rate but HC emission rate is observed significantly increased at some modes. The emission rate of PM2.5 is decreased by using oxygenated fuels and it decreases with the increase of fuel oxygen content. The emission rates of TC (total carbon) and EC (elemental carbon) in PM2.5 are also decreased by oxygenated fuels. The emission rate of organic carbon (OC) is greatly decreased at modes of higher engine speed. The OC/EC ratios of PM2.5 from oxygenated fuels are higher than that from base diesel fuel at most modes. The carbon compositions fractions of PM2.5 from the three test fuels are similar, and OC1 and EC1 are contributed to the most fractions of OC and EC, respectively. Compared with base diesel fuel, oxygenated fuels decrease emission rate of PM2.5, and have more OC contribution to PM2.5 but have little effect on carbon composition fractions.
%K diesel engine emission
%K oxygenated fuel
%K diesel fine particles
%K alternative fuel
%K particle carbon composition<br>柴油机排放
%K 含氧柴油
%K 柴油机细颗粒物
%K 替代燃料
%K 颗粒物碳组成
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=A5700F33A56CAE089D5BA9EF908F4EC3&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=B31275AF3241DB2D&sid=E0EA1E85C42D382D&eid=330226EF26D09028&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=26