小汽车火灾燃烧特性及影响因素研究

A Study of the Combustion Characteristics and Influence Factors of Car Fires

在系统调研国内外全尺寸小汽车火灾试验的基础上,对小汽车火灾燃烧特性及影响因素进行了分析,提出了点火时间、燃烧持续时间、发展到HRR峰值所用时间、HRR峰值、热释放总量、单位可燃物热释放值等反映小汽车火灾燃烧特性的6个主要参数,并分析了对小汽车火灾燃烧特性产生较大影响的小汽车本身的燃烧性能、点火部位和点火方式、试验空间的围合状态以及油箱材质和油料数量等主要影响因素。

Based on a comprehensive review about the full-size car fire tests at home and abroad,the combustion characteristics of the car fire are analyzed together with the influence factors.6 main parameters that reflect the combustion characteristics of car fire are suggested,such as the ignition time,the burning duration,the time to peak HRR,the peak HRR value,the total quantity of heat released,the heat released of per combustible unit.It is concluded that the burning property of the cars,ignition locations and ignition sources,the enclosing condition of the testing space,the material of the fuel tank and the number of fuel can produce remarkable influence on the combustion characteristics of the car fire.