ピストン圧縮自着火の新しい抑制法

概要

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A novel method for eliminating piston-compression ignition is proposed. Cool-flame degeneration/blue-flame generation is the key factor influencing whether the final hot flame will occur or not. Any late generation of formaldehyde other than from the fuel itself is deduced to be efficient for the retardation of the hot-flame onset. A method devised based on this concept consists of vapor addition to the mixture ; vapor of a low-volatile chemical compound which has very low vapor pressure and higher boiling point than that of the fuel is used. Confirmation experiment is carried out using a rapid-compression machine. Silicone oil (dimethylpolysiloxane) is used as the typical source of vapor. The vapor content of silicone oil does not exceed 0.4 percent of the fuel vapor. Air, when used as the oxidizing agent, is found to efficiently eliminate hot ignition ; this is not so when 21O_2/79Ar is used instead.
一般社団法人日本機械学会の論文
1994-03-25