水系灭火装置在汽车发动机舱的应用

The water fire suppression systems using in engine compartments of vehicle

通过发动机舱灭火模型的灭火试验、实车发动机舱内的喷射试验,给出了发动机舱灭火试验结果、水系灭火剂喷射时发动机舱内温度曲线和机舱内高温元件表面温度数据表。灭火剂喷射结束后连续进行3次启动-熄火测试,发动机均能正常运转。试验表明,水系灭火装置可以成功扑灭现有模型的火灾;灭火剂喷射不会使发动机部件因为热胀冷缩而产生裂纹,未见对发动机正常运转产生影响,不会对发动机造成损害。

The fire suppression experiment of engine compartment model and injection experiment in engine compartment were carried out to find the firefighting efficiency of water extinguishing system and the temperature in engine compartment during the injection of water extingoishing agent. The engine was restarted 3 times after the injection of extinguishing agent, it turned out that the engine could operation normally. The experiments showed that the water extinguishing agent could put out the fire on this model. The extinguishing agent would not make the component of cracking because of the thermal expansion and contraction, had no effect on the operation of engine, and would not damage the engine.