北京市轻型汽油车蒸发排放总量评估

通过实际测试得到轻型汽油车蒸发排放热浸和昼间排放因子,结合北京市轻型汽油车保有量和车辆使用情况,基于MOVES模型评估北京市轻型汽油车蒸发排放总量.结果表明,国五和国六标准车辆的平均蒸发排放因子分为1.03,0.37g/test;轻型汽油车蒸发排放随行驶里程增加未出现明显劣化趋势;北京市轻型汽油车蒸发排放总量为8299...

Estimation of light-duty vehicles total evaporative emissions in Beijing

Evaporative emission tests were performed to obtain the actual emission factors within hot-soak and diurnal-loss stages of light-duty gasoline vehicles. Based on the MOVES model, the total evaporative emissions from light-duty gasoline vehicles in Beijing was estimated with vehicle preservation and activity data as input. Evaporative emission factors of China-Ⅴ and China-Ⅵ vehicles were 1.03 g/test and 0.37 g/test, respectively. The evaporative emissions from light-duty gasoline vehicles showed no evident deterioration trend with the increase of mileage. The total evaporative emissions of light-duty gasoline vehicles in Beijing were 8299.7 t, about 68.3% of the annual tailpipe THC emissions attributed to light-duty gasoline vehicles. A reduction of 13.7% in the total evaporative emissions from light-duty gasoline vehicles in Beijing is projected with China-Ⅵ vehicles replacing the in-service models certified to China-Ⅲ.