甲烷／空气预混合气在定容燃烧室内的燃烧试验  

Study on Combustion Characteristics of Pre-mixed CH_4-Air in Constant Volume Combustion Chamber

作　　者：张红光[1] 郑轶[1] 郑国勇[1] 郑东守 曹圭伯 崔守镇 李晋秀 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022 [2]韩国机械研究院,韩国大田市305343

出　　处：《北京工业大学学报》2008年第12期1309-1313,共5页Journal of Beijing University of Technology

基　　金：北京市属市管高校人才强教计划资助项目(J4310790200801);北京市留学人员科技活动择优资助项目(38005015200701);北京市教委2008年科研计划项目(JC005012200801)．

摘　　要：为研究进气温度、进气压力、当量燃烧比、射流引燃、压燃(自燃)等对甲烷燃烧的影响,以提高点燃式天然气发动机的性能,在定容燃烧室(CVCC)内进行甲烷/空气预混合气的燃烧试验,通过火焰高速摄影和气体压力测量等手段,获取试验结果并进行分析.试验发现,在燃烧室内安装带通孔的横隔板后,有利于加快火焰传播速度、提高燃烧峰值压力和燃烧的稳定性,在某些试验条件下,下燃烧室会出现混合气压燃(自燃)现象.In order to improve the performance of spark-ignition engine fueled with natural gas, it is necessary to analyze the effect of intake temperature, intake pressure, equivalence ratio, jet ignition and compression ignition （auto-ignition） in the methane combustion process. A series of combustion tests were carried out to study the combustion characteristics of pre-mixed mixture of CH4-Air in the constant volume combustion chamber （CVCC）. Some test results were obtained by flame propagation photo and gas pressure measurement. Owing to a built-in adaptor with hole, higher flame propagation speed, higher combustion peak pressure value and higher combustion stability are available. In some conditions, because of flame trap effect, compression ignition （auto-ignition） occurs in the lower combustion chamber.

关 键 词：燃烧 定容燃烧室 甲烷 火焰高速摄影 气体压力测量 横隔板 

分 类 号：TK16[动力工程及工程热物理—热能工程] TK43