汽油泄漏引发的汽车火灾危险性研究

Research on automobile fire danger caused by gasoline leakage

以发动机舱内汽油泄漏为例,实验研究汽油泄漏引发的汽车火灾。结果表明,当点火源与汽油泄漏点在15 cm以内时,油蒸气是可以被引燃的,距离越短,越容易被电火花引燃;点火能量越高,油蒸气越容易被引燃;点火源处首先起火燃烧,引燃后有一定的轰燃现象,而且蔓延迅速;最易引燃浓度为3.5%左右。

Taking gasoline leakage in the engine compartment as an example,experimentally studied the automobile fire caused by gasoline leakage.Results showed that,when the distance between the fire source and leakage spot is under 15 cm,the oil vapour can be ignited,and the shorter the distance,the easier the ignition by electric spark;the higher the ignition energy,the easier the ignition;the fire starts at the fire source,followed by bombardment,and spread fast;the most easily ignition concentration is about 3.5%.