坡度对机动车气态排放物的影响

The Influence of the Road Slope Degree on the Gaseous Emissions of Vehicles

利用车载排放测试系统对轻型柴油车进行实际道路实验,研究瞬态条件下的不同坡度对车辆气态排放物的影响。结果表明随坡度增加CO_(2)、NO_(x)的排放速率均增加,在坡度3度时上升剧烈;高车速时CO_(2)排放速率显著增加,NO_(x)排放速率增加较缓慢。在-5坡度到4度时CO_(2)排放速率与坡度成线性关系。在海拔4000米时NO_(x)排放速率显著增长。

The article uses the vehicle-mounted emission test system to conduct actual road experiments on light-duty diesel vehicles to study the effects of different gradients on gaseous emissions under transient conditions.The results show that the emission rates of CO;and NO;both increase with the increase of the slope,and increase sharply at a slope of 3 degrees;the CO;emission rate increases significantly when the vehicle speed is high,and the NO;emission rate increases slowly.From-5 to 4 degrees,the CO;emission rate has a linear relationship with the slope.The NO;emission rate increases significantly at an altitude of 4000 meters.