用瞬态光谱技术对柴油机着火时刻的火焰光谱的初步研究

介绍了自行研制的光纤燃烧传感器配合OMA4光通道分析系统,在国内首次对柴油机的着火时刻火焰光谱进行了测量和分析。实验表明:燃烧过程中产生大量自由基,波长主要集中在紫外区和一部分可见光区;碳粒子的连续热辐射谱对测量结果有很大的影响。并验证了Fenimore关于碳氢燃料快速型NO机理。

Self - made optical combustion sensors with OMA4 multi-optical channel analysis system are used for the first time in domestic combustion research in order to photo the ignition flame e-mission in a diesel engine. The result is presented. During the combustion process, lots of radicals are generated whose wavelengths are divided into an ultraviolet and short visible range. The carbon particle's continuous thermal emission has great effect on the experimental result. Fenimore's prompt NO theory of hydrocarbon fuel was corroborated.