中文摘要：

利用先进的尾气检测技术（PEMS）收集了重型柴油客车的逐秒排放数据,并分析了CO、HC、NOX、PM等排放物与机动车比功率（VSP）的关系,发现当VSP值小于0时,各污染物排放速率较小;当VSP值大于0时,随VSP值增大而显著提高。在此基础上,利用IVE模型对重型柴油客车的整体排放以及不同速度下排放进行预测,并将结果与实测值、国Ⅱ标准进行了对比分析。结果表明,车辆在低速行驶时污染物排放较为严重,进入中高速行驶状态后排放明显下降;相比拥堵多发的路段,IVE模型更适用于预测运行较为通畅的路段上的污染物排放。

英文摘要：

The emission data of heavy-duty diesel bus are collected by using advanced portable emissions measurement system（PEMS） and the correlations between the emissions of CO,HC,NOX,and PM and Vehicle Specific Power（VSP） are analyzed.It is found that the emission rates are relatively low when VSP is less than 0 and will increase rapidly as VSP increases when VSP is higher than 0.Meanwhile,the emissions of heavy-duty diesel bus are predicted by applying International Vehicle Emission（IVE） model. A comparative analysis is conducted among predicted values, real-world values, and Europe Ⅱ emission standard. The results show that the emission factors are high when the vehicle driven in low speed, and decreases obviously when the vehicle driven in higher speed. IVE Model fits the condition that vehicles run smoothly better than the condition of traffic jam.