汽油的燃點比柴油高, 主要是由於其高波動性. 其閃點特別低, 大約 28 攝氏度.
閃點定義為油發生閃點時的溫度, 當達到一定的熱量並暴露於明火時, 瞬間點燃. The auto-ignition point refers to the 溫度 where oil ignites upon contacting enough air (氧).
通常, a lower flash point correlates with a higher auto-ignition point. 因此, gasoline’s flash point is lower than diesel’s, but its auto-ignition point is higher.