In recent years, automobile fire accidents have occurred frequently. To effectively understand the characteristics of car fire accidents, the burning behaviors of a running sedan vehicle and the fire spread characteristics were studied in this study. The spread progress of automobile fire was recorded by cameras installed in the front, side and inside of the car. The surface temperature and interior temperature of the car were measured by the infrared thermal imager and thermocouples. The engine compartment burned quickly after the fire, and smoke entered the car through the air-conditioning vents. The cab reached flashover after 10 min, and the temperature was over 1000 °C. The plastic materials of the car engine compartment were dripping in flames and the car tires were ignited by flaming droplet after 5 min. The experiment shows that in the case of engine compartment fire, personnel escape and firefighting should be performed within 6 min.

近年来，汽车起火事故频繁发生。为了有效地了解汽车起火事故的特征，本研究对正在行驶的轿车的燃烧行为和火势蔓延特性进行了研究。通过安装在汽车前部，侧面和内部的摄像机记录了汽车起火的蔓延过程。通过红外热像仪和热电偶测量汽车的表面温度和车内温度。发生火灾后，发动机舱迅速燃烧，烟雾通过空调通风口进入汽车。驾驶室在10分钟后达到闪络，温度超过1000°C。5分钟后，汽车发动机舱的塑料材料滴落在火焰中，并通过燃烧液滴点燃汽车轮胎。