MOBILE6.2中车队特征和平均速度对机动车尾气排放的影响

Study on Influences of Motorcade Characteristics and Average Speed on Vehicle Emission in MOBILE6.2 Model

分析了影响机动车尾气污染物排放的各种因素,对美国环保署推荐的MOBILE6.2模式进行了说明。分析研究了车队特征和平均速度对机动车排放的影响,为正确应用模式计算方法提供了理论依据。研究表明:机动车行驶里程对CO排放影响最明显;年均行驶里程随车龄的增加而减小,表明机动车的使用频率随车龄而减小,平均速度较慢或较快都显著影响机动车污染物的排放。

Based on analysis of several factors which have effects on vehicular pollutants emission, MOBILE6. 2 emission factor model authorized by USEPA is introduced. The influences of motorcade characteristics and average speed on emission are analyzed, which provides theory basis for applying MOBILE6. 2 correctly. The research indi- cates that the total vehicle mileages traveled influence CO emission significantly. Annual average vehicle mileages traveled are decreased with increasing age. The usage fluency of the car is going down with growing age, lower or higher average velocity evidently affects pollution emission.