底盘测功机阻力设定对轻型车排放影响的试验研究

An Experimental Study on the Light-duty Vehicle Emission with Chassis Dynamometer Resistance Setting

研究了车辆紧固状态对底盘测功机上阻力设定的影响,并在不同阻力设定条件下对两辆轻型车分别进行了试验研究。结果表明,A号车低设定阻力下的排放值也相对较低,阻力设定值不同导致油耗测量的最大值与最小值相差0.21 L/100km,且同一阻力设定值下排放值一致性较好;B号车设定阻力偏大时车辆排放与百公里油耗偏高,反之偏低,且同一阻力设定值时车辆排放与油耗测试结果相差较小。

The effects of the vehicle fixing on chassis dynamometer resistance setting and different chassis dynamometer resistance setting on emission of two light-duty vehicles were investigated.The results showed that emission of vehicle A under low resistance setting is relatively low,the different between the maximum fuel consumption and the minimum fuel consumption measured under different resistance setting is 0.21 L/100km,the emission under the same resistance setting has fair good conformity;whereas emission and fuel consumption per 100 km of vehicle B under high resistance setting are slightly higher, and are lower if vice versa,in addition,the discrepancy of vehicle emission and fuel consumption under the same resistance setting is relatively small.