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引入机动车颗粒物的质量消光率,建立了机动车排放和非排放性颗粒物及NO2气体综合消光作用下的外部混合模型。提出了基于污染物排放因子的隧道烟雾需风量计算方法,与我国现有规范及PIARC2004规范中烟雾需风量计算方法进行了比较,澄清了烟雾基准排放量的概念。计算得到重型机动车典型行驶工况下对应Pre-EU,EU-I～EU-IV排放标准的烟雾总需风量因子分别为2.84,1.9,1,0.89,0.78。
The mass extinction rate of motor vehicle particles was introduced to establish an external hybrid model of vehicle exhaust and non-exhaust particulate matter and NO2 gas extinction. Based on the pollutant emission factor, a method to calculate the amount of air required for tunnel smoke is proposed. Compared with the existing norms in our country and the calculation method of the required amount of smoke in the PIARC2004 code, the concept of the baseline smoke emission is clarified. Calculated the total amount of air required by the corresponding Pre-EU, EU-I ~ EU-IV emission standards for heavy vehicles under typical driving conditions were 2.84,1.9,1,0.89,0.78.