燃料特性对柴油机排放颗粒物理化特性影响的研究  

Effect of Fuel Properties on Physicochemical Characteristics of Diesel Engine Exhaust PM

作　　者：黄震[1] 李新令[1] 吕田[1] 许朕[1] 关淳[1] 罗悦齐[1] 

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240

出　　处：《内燃机学报》2016年第2期97-104,共8页Transactions of Csice

基　　金：国家自然科学基金重大国际合作资助项目(51210010);科技部港澳台科技合作专项资助项目(2014DFH90020)

摘　　要：机动车尤其是柴油车颗粒物是大气PM2.5的重要来源,建立燃料特性与颗粒物之间的内在联系,从燃料角度控制柴油机颗粒物排放十分重要.笔者选取了多种理化特性不同的适用于压燃式发动机的燃料,采用SMPS、HRTEM、TGA、热光碳分析仪和GC-MS等测试仪器,系统研究了燃料特性,如硫含量、芳烃含量、氧含量及其他物性参数等对排放颗粒物理化特性的影响,旨在建立燃料特性与颗粒粒径分布、纳米结构、氧化活性及化学组分之间的内在联系,为机动车PM2.5的排放控制提供科学参考.Motor vehicles,especially diesel vehicles,contribute to a large part of atmospheric PM2.5.Therefore,it is important to control the emissions of diesel engines by understanding the inherent relationship between fuel properties and exhaust particle.In this paper,several fuels with different physicochemical characteristics available for the compression ignition engine,were studied by using the SMPS,HRTEM,TGA,thermal optical carbon analyzer and GC-MS.The effect of fuel properties,such as contents of sulfur,aromatics,oxygen and other physical parameters on particle size distribution, nanostructure, oxidation reactivity and chemical components was analyzed.This work aims to build the inherent relationship between particle size distribution,nanostructure,oxidative activity and chemical components and provides a scientific reference for the controlling of the atmospheric PM2.5 derived from motor vehicle emissions.

关 键 词：柴油机 燃料特性 颗粒物 粒径分布 纳米结构 氧化活性 化学组分 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]