天然气发动机甲烷和总碳氢排放测量技术的研究  

Analytical Method of Mechane and Total HC Emission from Natural Gas Engine

作　　者：裴毅强[1] 宋崇林[1] 吕刚[1] 范国梁[1] 张增建[2] 宋威[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]解放军军事交通学院

出　　处：《小型内燃机与摩托车》2009年第5期9-12,共4页Small Internal Combustion Engine and Motorcycle

基　　金：国家高技术研究发展计划(863计划)项目(2006AA11A1B3);(2006AA11A198)

摘　　要：使用十通阀双定量管取样、六通阀双气路的特殊反吹分析方法,实现了对燃气发动机排放物中甲烷和总碳氢化合物的直接快速、准确检测。该分析方法在50×10^-6-10000×10^-6（V/V）范围内,变异系数不大于0.44%;在2.5×10^-6-10×10^-6（V/V）范围内,变异系数不大于4.98%,绝对误差小于0.35×10^-6（V/V）。分析时间小于0.8min,分析周期小于1.6min。直接进样分析对甲烷和非甲烷碳氢化合物的最小检测灵敏度小于1×10^-6（V/V）。Based on ten-valve and double-tube-quantitative sampling as wella s the special inverse blow means,an excellent analytical method ahs been utilized to the direct,quick and accurate measurement of methane and total hydrocarbon from natural gas engine emissions.Experimental results indicate that the variance coefficient was not bigger than 4.98% in the range of 50×10^-6～10000×10^-6（V/V）;the coefficient was not bigger than 0.44% and the absolute error was less than 0.35×10^-6（V/V） in the range of 2.5×10^-6～10×10^-6（V/V）. Results also show that the analytical time and analytical period were less than 0. 8min and 1.6min, respectively. Using the direct sampling to the analysis of methane and total hydrocarbon, the minimal sensitivity was less than 1 × 10^-6（V/V）.

关 键 词：天然气发动机 甲烷 总碳氢 气相色谱 变异系数 

分 类 号：TK412.5[动力工程及工程热物理—动力机械及工程]