RCCI发动机的燃烧及排放试验  

Combustion and emission test of RCCI engine

作　　者：胡建功 HU Jiangong(Department of Mechanism and Electricity,Taiyuan University,Taiyuan 030032,China)

机构地区：[1]太原学院机械与电气工程系,太原030032

出　　处：《中国科技论文》2020年第4期455-460,468,共7页China Sciencepaper

基　　金：山西省青年科技研究基金资助项目(201701D221148)。

摘　　要：为了研究天然气掺氢混合燃料对发动机燃烧及排放的影响,利用生物柴油作为燃料,在反应活性控制压燃(reactivity controlled compression ignition,RCCI)模式下进行对比试验。结果表明:天然气掺氢提高了柴油机的热效率,同时缩短了滞燃期和燃烧持续期;随着天然气掺氢混合燃料喷射量的增加,放热率峰值先增大后减小,着火时刻延迟;天然气掺氢燃料的HC、CO和烟度排放均低于天然气,但NO x排放呈升高趋势,与传统柴油机相比,天然气掺氢能够显著降低CO和HC排放。In order to study the effect of natural gas and hydrogen mixed fuel on the combustion and emissions of the engine,biodiesel was used as the fuel,and a comparative experimental study was conducted in the reactivity controlled compression ignition(RCCI)mode.The test results show that natural gas doped with hydrogen improves the thermal efficiency of diesel engines,while shortening the flame retardation period and the duration of combustion;with the increase of injection volume of natural gas doped with hydrogen mixture fuel,the peak value of heat release increases first and then decreases,and the ignition time is delayed.The HC,CO and smoke emissions of natural gas hydrogenated fuels are lower than natural gas,but NO x emissions are on the rise.Compared with traditional diesel engines,natural gas doped with hydrogen can significantly reduce CO and HC emissions.

关 键 词：生物柴油(B100) 天然气 燃烧 排放 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]