予混合低温度圧縮自着火まえ過程のガス組成と科学発光履歴 : 熱工学,内燃機関,動力など

概要

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The blue-name reaction is a real issue for the autoignition of hydrocarbon fuel/air mixtures in internal combustion engine cylinders. Once a blue flame has appeared, the following hot-flame onset would be inevitable, except for very special cases. Blue flame generates carbon monoxide briskly, and is the final induction stage of oxidation up to the real hot-flame ignition. Piston-compression ignitions of n-butane/air mixtures conditioned at slightly upper and lower than the lean ignitable pressure limit were compared using a rapid compression machine to elucidate the ignition promoter or ignition trigger to the final hot-flame appearance. Carbon-monoxide concentration is always superior to of the carbon dioxide during the whole induction period and its maximum is caused at the very late stage of blue-flame period. Based on chemical species histories it could be concluded that a carbon-monoxide/dioxide ratio should increase for the hot-flame establishment. A small amount of carbon-monoxide brimming over compared with carbon dioxide production rate during the blue-flame period would be a trigger for the transfer to the final hot-flame ignition.
一般社団法人日本機械学会の論文
2001-09-25