層状混合気の燃焼特性に関する研究 : 第2報,定容燃焼器内の混合気濃度分布が燃焼排気特性におよぼす影響

概要

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A pancake-type constant-volume combustion chamber was used to investigate the combustion and NO_χ emission characteristics of propane-air and hydrogen-air mixtures under various charge stratification patterns, which were obtained by variations of injected mixture concentration and ignition spark timing. A planar laser-induced nitrogen dioxide fluorescence technique was applied to measure the mixture distribution in the test chamber. The results show that under the rich side of overall excess air ratio, the combustion speed of the homogeneous mixture was slightly faster than that of the stratified mixture. When the rich mixture was near the spark ignition point, the combustion speed was fastest under the lean side of overall excess air ratio. When the mixture concentration near the spark ignition point increased, NO_χ emissions increased under the lean side of overall excess air ratio but decreased under the rich side.
一般社団法人日本機械学会の論文
1996-07-25