燃料性状が微粒子の生成に及ぼす影響 : 燃料の熱分解,縮・重合過程について

概要

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Exhaust particulates in diesel engines are affected by the fuel properties, especially the aromatic hydrocarbon content and distillation properties. However, the reasons for this fact are not clear. Particulate formation has been reported to start with thermal cracking of the fuel to lower boiling point hydrocarbons, followed by condensation polymerization and production of benzene ring compounds. The formation of particulates takes place via polycyclic aromatic hydrocarbons. This report investigates the thermal cracking and condensation polymerization process of various fuels up to the solid particulate formation temperature zone, using a high-temperature thermal cracking apparatus in nitrogen atmosphere. The following results are obtained : 1 Depending on their molecular structure, aliphatic hydrocarbons start thermal cracking and condensation polymerization at slightly different temperatures, but the formation processes of particulate is almost the same no matter what the carbon bonds. 2 Benzene rings of aromatic hydrocarbons are almost never cracked in the formation of the polycyclic aromatic hydrocarbons.
一般社団法人日本機械学会の論文
1993-08-25