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为对小汽车内火灾发展特点进行研究,在同一辆汽车内进行了两次足尺寸火灾实验。第一次在驾驶舱后排座椅放置点燃的香烟,用以研究烟头引发火灾的可能性;第二次人为点燃驾驶舱后排座椅,用以模拟汽车驾驶舱被纵火的场景。实验使用了摄像机、热电偶及辐射热通量计对实验过程进行记录,结果显示:汽车座椅的阴燃过程发展缓慢并且很难引燃小汽车;车窗紧闭的情况下,驾驶舱内火灾会因为缺氧而窒息;因为发动机舱与驾驶舱之间存在较多分隔部件,火灾向发动机舱的蔓延要明显慢于向后备箱的蔓延。
In order to study the characteristics of the fire in a car, two full-size fire experiments were carried out in the same car. For the first time, lighted cigarettes were placed in the rear seats of the cockpit to study the possibility of a cigarette end fire. The second artificial ignition of the rear seats of the cockpit was used to simulate scenes in which the cockpit was set on fire. The experiment used the camera, thermocouple and radiant heat flux meter to record the experimental process. The results showed that the smoldering process of the car seat was slow and it was difficult to ignite the car. When the window was closed, The fire was suffocated by lack of oxygen; the fire spread to the engine compartment significantly slower than to the trunk due to the more compartments between the engine compartment and the cockpit.