测试方法对城市客车续驶里程及能耗的影响分析

Study on the Influence of Test Methods on Driving Range and Energy Consumption of City Bus

论文通过对某型号城市客车分别进行常规工况法(CCP)及缩短法(STP)试验,研究不同测试方法对于城市客车的续驶里程及能耗测试的影响。对试验结果进行分析,发现CCP和STP的续驶里程及能耗差异性均在5%以内。在等效能耗差异较小的情况下,若采用更低的恒速段车速可以使车载可充电储能系统(REESS)放电更多,得到的续驶里程就会越大,但此时基于外部电源获取的能量消耗量可能也会增加。在STP中,由于第二个循环工况段的能耗占等效能耗的比例远高于第一个循环工况的能耗占比,对最终的等效能耗影响最大,因此,合理优化低电量(20%~30%)时的能耗可以有效控制试验中的等效能耗,得到更加理想的续驶里程。

In this paper,the influence of different test methods on driving range and energy consumption of a certain type of city bus is studied by consecutive cycles procedure(CCP)and shortened test procedure(STP).By analyzing the test results,it is found that no matter which test method is used,relatively accurate test results can be obtained,and the difference is less than 5%.In the case of small difference in equivalent energy consumption,if the vehicle's rechargeable energy storage system(REESS)can be discharged more by using a lower constant speed segment,the driving range will be larger,but the energy consumption obtained based on external power supply may also increase.In the STP,because the energy consumption of the second cycle working condition occupies a much higher proportion of equivalent energy consumption than that of the first cycle working condition,it has the greatest impact on the final equivalent energy consumption.Therefore,reasonable optimization of energy consumption at low power(20%~30%)can effectively control the equivalent energy consumption in the test and obtain a more ideal driving range.