超高EGR・低酸素ディーゼル燃焼の燃料性状依存性(熱工学,内燃機関,動力など)

概要

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The dependence of ultra-high EGR and low oxygen diesel combustion on fuel properties was investigated with a single cylinder naturally aspirated 1.0L DI diesel engine. Decreasing cetane number in fuels significantly reduces the smoke emission due to an extension in the ignition delay and the subsequent improvement in mixture formation. Smokeless combustion, ultra-low NO_x and efficient operation range for EGR and for IMEP are remarkably extended with decreasing the cetane number. Change in fuel distillation temperature does not result in significant differences in the smoke emission and thermal efficiency at ultra-high EGR operation, and smokeless operation is established even with higher distillation temperature fuels as long as the cetane number is sufficiently low.
社団法人日本機械学会の論文
2006-07-25