轻型汽油车适用国Ⅲ法规的蒸发排放控制与分析

Control and Analysis Applying to 3rd Phase of National Evaporative Emission Standard for Light-Duty Gasoline Vehicle

介绍了国Ⅲ排放法规,以大量的试验数据为依据,阐述了我国现阶段轻型汽油车执行当前排放法规的现状。通过分析整车、零部件以及外部因素对整车蒸发排放的影响,确定了轻型汽油车蒸发排放物的来源、分布以及控制方法。通过炭罐-油箱系统进行了车辆蒸发试验,确定了HC生成的机理和浓度变化过程,为进一步的匹配工作奠定了基础。

This paper introduced 3rd phase of National evaporative emission standard,and expatiated on the present situation of light-duty gasoline vehicle emission standard based on lots of test data.By Analyzing the influences of complete vehicle,parts and outer factors on evaporative emission,and confirmed the source,distrlbution and control methods of evaporative emission for light-duty gasoline vehicle.HC generating mechanism and concentration change were confirmed by the vehicle evaporative test of carbon tank - fuel tank system,and supply the base for the next matching work.