华中科技大学学报（自然科学版）2017，Vol.45Issue(7)：61-65,5.DOI:10.13245/j.hust.170712
柴油机燃用纳米CeO2催化柴油的缸内碳烟分布
Diesel in-cylinder soot distribution with nano-CeO2 catalyst diesel fuel
摘要
Abstract
The generation process and concentration distribution of in-cylinder soot were investigated on a common-rail diesel engine fueled with catalyst diesel using the visualization technology, and the combustion characteristics and smoke emissions of the diesel engine were also analyzed.Results show that the occurrence location of soot flame is advanced and its vanishing moment comes earlier with the increase of CeO2 ratio.Compared with the pure diesel, soot generation zone, soot concentration and soot area occupation ratio in cylinder are smaller with catalyst diesel.There is an obvious reduction of smoke emissions when diesel engine fueled with catalyst diesel, and the improved effect becomes better with the increase of engine load.CeO2 nano-particles can increase the heat release rate and improve the fuel combustion process.While the proportion of CeO2 ratio increases, the combustion starting point advances, the peak pressure, the peak heat release rate and the peak pressure rise rate increase in all, and their corresponding phases get close to the top dead center.关键词
柴油机/碳烟/燃烧特性/可视化/催化柴油Key words
diesel engine/soot/combustion characteristic/visualization/catalyst diesel分类
能源科技引用本文复制引用
刘军恒,孟建,孙平,宁海强..柴油机燃用纳米CeO2催化柴油的缸内碳烟分布[J].华中科技大学学报（自然科学版）,2017,45(7):61-65,5.基金项目
内燃机燃烧学国家重点实验室开放基金资助项目(K2016-05) （K2016-05）
江苏省自然科学基金资助项目(BK20160538) （BK20160538）
江苏省高校自然科学研究重大项目(14KJA470001) （14KJA470001）
江苏省高校自然科学研究面上项目(16KJB470003) （16KJB470003）
江苏大学高级人才科研启动基金资助项目(15JDG163) （15JDG163）
