軽油の層流拡散火炎から生成するナノPMの研究(熱工学,内燃機関,動力など)

概要

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Particulate Matter (PM) formation is still one of the most significant problems of diesel engines. PM having a diameter of less than 100nm is usually called nano-PM which is considered being serious hazardous for human health. The objective of this paper was to obtain knowledge of PM from diffusion flame which was a base of diesel combustion process. For the purpose of it, a fundamental pool combustion flame was used to clarify the nano-PM exhaust behavior from the flame. Diesel fuel and lubricant added diesel fuel were used to clarify the formation process of nano-PM. Number concentration of the PM was measured using a scanning mobility particle sizer (SMPS-3034 TSI), and PM composition was quantitatively analyzed using a combustion type exhaust gas analyzer (MEXA-1370 PM HORIBA). As the result, the number concentration measurement showed that nano-PM number concentration in a diffusion flame increased with increasing lubricant content. The PM component analysis clarified that the nano-PM constituent substances were consist of soot, soluble organic fraction (SOF) and sulfate. The main component of nano-PM exhausted from a small pool flame which had closed flame tail was SOF, however dry soot was the main component of a large flame with sooty flame tail.
社団法人日本機械学会の論文
2006-12-25