基于COPERT模型的重型柴油货车排放因子敏感性分析研究

Sensitivity Analysis of Heavy-duty Diesel Truck Emission Factors Basic on COPERT Model

模拟分析了COPERTⅣ模型中不同污染物排放因子计算结果对主要输入参数的敏感性。以COPERTⅣ模型为平台,以重型柴油货车为研究对象,分别模拟了不同行驶速度、排放标准、燃料含硫率、累计行驶里程、车辆负载、道路类型、道路坡度、是否执行I/M制度等情景下的排放因子,对比分析了不同参数对CO、VOC、NOx、PM、SO2等污染物排放因子的影响,得出以下主要结论:0~45 km/h为速度变化的敏感范围,国2及国4排放阶段相较于前一阶段排放因子有较大幅度下降等。

The sensitivity of different pollutant emission factors to the main input parameters in the COPERTⅣ model was simulated and analyzed. Based on the model COPERTⅣ, the heavy - duty diesel trucks were used to simulate the emission factors with different input parameters such as driving speed, emission standard, fuel sulfur content, accumulated mileage, vehicle load, road type, road slope and whether to implement the I/M system, and thenthe influence of different input parameters on pollutant emission factors such as CO, VOC, NOx, PM and SO2 was analyzed and compared. Theresults show that, 0 - 45 km/his the sensitive range of driving speed change, the emission factors for phase 2 and 4 emission standard are much lower than those of the previous stage.