变压缩比二甲醚均质充量压燃发动机排放特性的研究  

Study of DME HCCI Engine Emission Characteristic with Different Compression Ratios

作　　者：胡铁刚[1] 周龙保[1] 刘圣华[1] 李维[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《内燃机工程》2005年第5期10-13,共4页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金重点资助项目(50136040);973国家重大基础研究规划项目(2001CB209207)

摘　　要：在TY1100柴油机上试验研究了8.0、10.7、14.0三种压缩比ε对二甲醚均质压燃发动机排放特性的影响。研究结果表明:三种压缩比均可以有效控制发动机NOx排放,使其接近于零,并实现无烟燃烧;发动机的低排放区与混合气过量空气系数密切相关,不同ε有不同的最佳运行范围,在此范围内,CO均能达到0.2%的低排放,HC则在ε=10.7附近时较高。The effects of DME HCCI engine compression ratio of 8.0,10.7 and 14.0 on emission characteristics were studied experimentally on a TYll00 single cylinder engine. The results show that, within favorite operating range, zero NOx and smokeless combustion can be achieved under all test compression ratios. HC and CO emissions are tightly related to the mixture A/F ratio and the optimized A/F range varies with the compression ratio. Working in the optimized A/F range, the DME HCCI engine has a very low emission of 0.2%, however HC emission becomes higher when ε nears 10.7.

关 键 词：内燃机 二甲醚 均质充量压燃 排放 压缩比 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]