氧浓度对斯特林发动机燃用不同燃料时燃烧火焰特征的影响  

Effect of Oxygen Concentration on Combustion Flame of a Stirling Engine

作　　者：罗斌[1] 张武高[1] 陈晓玲[1] 周小力[1] 

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240

出　　处：《上海交通大学学报》2013年第11期1733-1737,1744,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50976070,51176119);内燃机燃烧学国家重点实验室开放基金(K2012-03)

摘　　要：利用高速摄影技术,研究了以乙醇为燃料时斯特林发动机引射气流中氧浓度对燃烧的火焰长度、色度、燃烧速度以及燃烧稳定性等的影响.结果表明:在引射空气时,随着氧气浓度的提高,火焰的稳定性及火焰传播速度提高,燃烧火焰长度变短,火焰变得更明亮,且柴油火焰亮度比乙醇大;在有引射气流的作用下,氧浓度对燃烧特征参数的影响较小.Using high speed photo technique, the effect of the oxygen concentration on intake air of Stirling engine fueled with diesel and ethanol combustion flame was studied. The experimental results showed that as the oxygen concentration increased, the flame stability was improved and the combustion flame propagation speed was increased; as the oxygen concentration in intake air increased, the combustion flame length decreased and the flame lightness increased; the flame in the combustion chamber was brighter when fueled with diesel than fueled with ethanol. The oxygen concentration had an inconspicuous effect on combustion mode and flame cone angle when injected gas was used.

关 键 词：斯特林发动机 乙醇燃料 燃烧火焰 引射气流 进气氧浓度 

分 类 号：TK05[动力工程及工程热物理]