基于AVL-FIRE的醇醚燃料发动机燃烧与排放特性研究  

Analysis on the combustion and emission characteristics of diesel engine fueled with alcohol ether based on AVL-FIRE

作　　者：张鹏超[1] 张翠平[1] 姚晓博 郭冬青[1] 肖帅[1] 

机构地区：[1]太原理工大学机械工程学院车辆工程系,太原市030024

出　　处：《中国农机化学报》2015年第3期238-241,共4页Journal of Chinese Agricultural Mechanization

基　　金：山西省自然科学基金项目(2013011041-3)--醇醚燃料发动机燃烧及排放特性分析模型研究

摘　　要：将甲醇添加到二甲醚柴油的混合燃料中,利用AVL-FIRE软件对混合燃料的燃烧特性和排放特性进行仿真分析。将柴油按质量比70%固定不变,分别将甲醇以12%、8%、4%和0%的比例添加到柴油当中,其余添加二甲醚。研究这4种混合燃料在2 200r/min高负荷工况下缸内温度、压力、累积放热量、NOX和Soot排放的情况,并与柴油作比较。结果表明:在高负荷工况下,随着混合燃料中甲醇含量的增加,缸内压力逐渐增大,缸内压力峰值所在的曲轴转角位置基本不变;随着混合燃料中甲醇含量的增加,放热率曲线峰值减小,最高缸内温度呈下降趋势,NOX排放量降低,Soot排放量上升。In the simulation, the quality ratio of diesel was fixed as 70%, putting methanol of 12%, 8%, 4% and 0% respectively to the diesel, and the rest was added with DME. The cylinder temperature, cylinder pressure, accumulated heat release, NOx and Soot emissions of the four mixed fuels un- der 2200 r/min high load condition were studied, and then compared with those of diesel. Under high load conditions, with the increase of methanol content in the fuel blends, cylinder pressure gradually increases, the crankshaft angle position of the highest cylinder pressure remains unchanged, the peak value of the heat release rate curve decreases, as well as the highest cylinder temperature, the emission of NOx decreases, but the emission of Soot increases.

关 键 词：AVL-FIRE 醇醚燃料 燃烧与排放 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]