柴油机燃烧过程中基本碳粒子的生成历程  

Formation Histories of Primary Carbon Particles During Diesel Engine Combustion Process

作　　者：董素荣[1] 宋崇林[2] 吕刚[2] 杨生辉[1] 刘刚[1] 张国彬[1] 董宏国[1] 

机构地区：[1]军事交通学院汽车工程系,天津300161 [2]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《燃烧科学与技术》2009年第6期511-514,共4页Journal of Combustion Science and Technology

基　　金：国家重点基础研究发展规划(973)资助项目(2002CB211603)

摘　　要：基于电控燃油喷射柴油机全气缸取样试验平台,利用场发射透射电子显微镜和图像处理技术,对柴油机燃烧过程中基本碳粒子的生成及演变历程进行了研究.结果表明,基本碳粒子的结构在柴油机燃烧过程中逐渐向石墨化过渡.燃烧初期生成的碳粒子很小,没有明显的分层;随着燃烧进程的发展,基本碳粒子逐渐长大,开始出现分层,最终形成洋葱状的微晶碳结构,且微晶结构层与层之间的距离逐渐减小.Using the total cycling sampling system, the investigation into formation and evolution of primary carbon particles during modern diesel engine combustion process was conducted by a field emission gun transmission electron microscopy. The results were analyzed by the image technique, which showed that the structure of primary carbon particles gradually changed into that of graphite during the combustion process. At the initial combustion stage, the primary carbon particles were very small and crystal layers were not clear. With the burning process going on, primary carbon partieals began to grow and crystal layer number started to increase. Finally, primary carbon particles developed into crystallitic onion-shell carbon and the space between graphite erystallitic layer was decreased.

关 键 词：基本碳粒子 微观结构 燃烧过程 生成及演化 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]