爆燃燃烧对火焰辐射光变化的影响  

Research on Effect of Knock Combustion on Flame Emission

作　　者：朱文峰[1] 薛敏霞[1] 盛凯夫[1] 陈小迅[2] 王仲芝[2] 饶如麟[2] 

机构地区：[1]华中科技大学交通学院,武汉430074 [2]东风汽车工程研究院

出　　处：《燃烧科学与技术》2001年第2期191-193,共3页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目 !(595760 2 5)

摘　　要：应用火花塞光纤传感测量系统对 BJ492 Q汽油机爆燃燃烧进行测量和研究 ,分析了爆燃燃烧时火焰光辐射的变化情况。正常燃烧时 ,CH(4 31.5 nm) ,C2 (5 16 .5 nm) ,H2 O* (5 88nm)自由基的光强曲线出现双峰值 ,着火延迟期内为自由基光辐射。爆燃较强工况时 ,只出现一个峰值 ,主要是碳粒子热辐射 ,峰值处出现剧烈波动 ,相位提前 ,无自由基的光辐射。试验表明 。Researches on knock combustion in BJ492Q using spark plug optical sensors are presented in this paper.The effects of knock intensity on light emission are studied.In normal condition at theoretical A/F ratio,double peaks appear on luminous curves of CH(431.5 nm),C 2(516.5 nm),and H 2O (588 nm) radicals,with one of the peaks appearing in the delay combustion process.But under high knock intensity condition,only one peak appears due to the thermal radiation of carbon particle.High frequent fluctuations appear near the peak,with phase advanced and light emission of radicals disappearing.The use of the spark plug sensor is proved to be feasible in knock combustion detection.

关 键 词：燃烧火焰辐射光 爆燃 火花塞光纤传感器 汽油机 

分 类 号：TK411.2[动力工程及工程热物理—动力机械及工程]