小型柴油机突增负荷工况下的HC排放特性  

Study on HC Emission Behavior of Small Diesel Engines at Sudden Load-up Condition

作　　者：孙万臣[1] 刘巽俊[1] 宫本登[2] 小川英之[2] 河边隆夫 

机构地区：[1]吉林大学汽车工程学院 [2]日本国北海道大学工学部

出　　处：《农业机械学报》2005年第6期20-23,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"973"重点基础研究发展计划资助项目(项目编号:2001CB209205);吉林省科技发展计划资助项目(项目编号:20040512);教育部留学回国人员科研启动基金资助项目

摘　　要：应用自行开发的柴油机过渡工况控制系统及排气采集装置,模拟柴油机实际工作时的增负荷状态,对HC排放特性进行了试验研究。利用气相色谱仪对HC排放成分进行分析。研究结果表明,增负荷工况中HC排放量急剧增加,其中碳数在8以下的低沸点成分占有很大的比例,对于总的HC排放特别是增负荷开始后的HC排放起着主导作用。在低沸点的HC排放成分中,乙烯和丙烯所占的比例最大,乙烯在各个循环中约占40%。A transient operation control system and an exhaust collection system at transient operation were developed, and HC emission behavior from single-cylinder DI diesel engine simulating practical sudden load-up condition has been investigated experimentally. Components in HC emission were analyzed by gas chromatography. Experiment results showed that HC emissions increased sharply at the beginning of sudden load-up. Volatile components below C8 were main components that played predominant role in overall HC emission and especially at the beginning of sudden load-up. Among these volatile ingredients, ethylene C2H4 and propylene C3H6 were major components, and C2H4 component for about 40% of total.

关 键 词：小型柴油机 过渡工况 排放特性 燃烧特性 增负荷工况 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]