定常高温空気流中における燃料噴霧の着火 : 第3報,化学的因子の影響および考察
1986 年 52 巻 482 号 p. 3577-3580
詳細
1986 年 52 巻 482 号 p. 3577-3580
The Spontaneous ignition of fuel sprays injected into a steady hot air flow by hole-nozzle with a single hole was studied. In the present study, the effect of the chemical factor on ignition delay was investigated, using fuels mixed with an ignition promoting additive. The results showed that amyle nitrite, an additive to diesel oil, decreases the apparent activation energy for ignition as well as the delay time itself. Then, a simple model was proposed on the spontaneous ignition of sprays, and it was known that the model can explain the various phenomena obtained in this work fairly well. The discussion suggested that the ignition may be attributed to fine droplets smaller than 10μm, existing in the peripheral region of sprays.
