铁基燃油添加剂对柴油机微粒排放的影响  

Effect of Fe-based fuel additive on diesel engine particulate emissions

作　　者：王丹[1] 刘忠长[1] 王忠恕[1] 吴楠 刘江唯 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]中国第一汽车股份有限公司技术中心,长春130011

出　　处：《吉林大学学报（工学版）》2012年第5期1173-1178,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50976046)

摘　　要：在低硫(w(S)=30×10-6)柴油中直接添加微量的铁基添加剂,通过发动机台架试验研究了铁基添加剂对柴油机性能、气体排放、微粒数量浓度及其粒度分布的影响。研究结果表明:采用铁基添加剂时,发动机动力性稍有提高,燃油消耗率略有下降,CO、HC和NOx排放有降低趋势。铁基添加剂能够显著提高总微粒数量浓度,尤其是核态微粒排放,试验工况下加剂柴油的核态微粒数比例均高于纯柴油,基本上都大于90%。此外,除了高速工况,燃油添加剂的使用降低了积聚态微粒排放。Adding small amount of Fe-based additive into the low-sulfur（w（S）=30×106-6） diesel fuel to investigate experimentally the effects of Fe on the diesel engine power,fuel economy,gaseous emissions and particulate emissions including particle number concentration and size distribution.Results showed that Fe addition leads to a slight increase in power output,a slight decrease in specific fuel consumption,and more or less decrease of CO,HC,and NOx emissions.Fe additive produces the additional nano-particles beyond the diesel particulates and increases the total particle number concentration,especially the nucleation mode particle.Under all test conditions,Fe additive makes the ratios of the nucleation mode particle higher than 90%,and always higher than those using the standard diesel fuel without Fe additives.Use of Fe additive leads to an obvious reduction of the accumulation mode particle emission except under high-speed conditions.

关 键 词：动力机械工程 柴油机 燃油添加剂 微粒排放 数量浓度 粒度分布 

分 类 号：TK42[动力工程及工程热物理—动力机械及工程]