边界条件对乙醇HCCI发动机燃烧的影响  

Influence of boundary condition on combustion of ethanol HCCI engine

作　　者：许思传[1] 李荣庆[1] 程钦[1] 郭英男[2] 张纪鹏[2] 孙济美[2] 王永富[3] 

机构地区：[1]同济大学汽车学院,上海201804 [2]吉林大学汽车工程学院,长春130022 [3]车辆排放与节能重庆市市级重点实验室,重庆400039

出　　处：《吉林大学学报（工学版）》2007年第1期74-78,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：'973'国家重点基础研究发展规划项目(2001CB209206)

摘　　要：利用发动机循环模拟软件BOOST,并使用详细的化学反应动力学机理,建立了乙醇HCCI发动机的单区模型。模拟计算结果与试验结果吻合得较好。利用该模型研究了气门流量系数和缸内壁面温度对燃烧的影响。模拟计算结果表明,该HCCI发动机的气门流量系数不宜取得很大,在较小的流量系数下HCCI的燃烧变得柔和;而改变壁面温度相当于对进气加热,促进了燃烧。Combined the engine cycle simulation software BOOST and the detailed mechanism of ethanol chemical reaction kinetics, a single-zone model of ethanol HCCI engine was established. Comparing the simulation results with the test results showed a good consistency, especially in calculating the ignition timing. Simulation by the model indicates that decreasing the intake and exhaust valve flow coefficients of this HCCI engine could make the combustion of ethanol HCCI engine gentler, while increasing the temperature of the cylinder wall means heating the intake charge, leading to the promotion of the combustion.

关 键 词：动力机械工程 均质充量压缩着火BOOST CHEMKIN 流量系数 缸壁温度 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]