【摘要】 利用便携式排放测试系统（PEMS），对江苏省9辆国六阶段新生产机动车（5辆轻型汽油车、1辆轻型柴油车、3辆重型柴油车）进行实际道路CO₂排放测试，分析了不同车型CO₂排放特征，并对其中的4辆机动车进行了实时油耗监测，分析其与碳平衡核算结果的差异。结果表明：9辆机动车综合CO₂排放因子在152.31～859.01 g/km之间，总体表现为“重型柴油车>轻型柴油车>轻型汽油车”；除轻型柴油车外，轻型汽油车和重型柴油车各工况下的CO₂平均排放因子表现为“市区>高速>市郊”；油耗与CO₂排放因子的走势一致，两者正相关性显著（R²=0.958）；实测油耗低于碳平衡核算结果，两者平均相对误差为3.9%，说明利用碳平衡法进行此类车型的CO₂排放核算具有较高的可信度。更多还原

【Abstract】 The portable emission test system（PEMS） was used to test the actual road CO₂emissions of 9 newly produced motor vehicles（5 light gasoline vehicles, 1 light diesel vehicles, 3 heavy diesel vehicles） in Jiangsu Province during the sixth phase of the country. The characteristics of CO₂emissions of different models were analyzed, and the real-time fuel consumption monitoring of 4 of these vehicles was carried out to analyze the differences between them and the carbon balance accounting results. The results show that: The comprehensive CO₂emission factors of 9 motor vehicles range from152.31 g/km to 859.01 g/km, and the overall performance is "heavy diesel vehicle >light diesel vehicle >light gasoline vehicle". Except for light diesel vehicles, the average CO₂emission factors of light gasoline vehicles and heavy diesel vehicles under various working conditions are "urban >high-speed >suburban". The trend of fuel consumption and CO₂emission factor is consistent, with a significant positive correlation（R²= 0.958）. The measured fuel consumption is lower than the carbon balance accounting result, and the average relative error between the two is 3.9%, which shows that the CO₂emission accounting of this type of vehicle using carbon balance has a high reliability.更多还原