轻型车国五和国六滑行阻力对比和替代算法研究  

Comparison of Coasting Resistance and Substitution Algorithms of Light Vehicle China 5 and China 6

作　　者：惠鹏 HUI Peng

机构地区：[1]泛亚汽车技术中心有限公司,上海201208

出　　处：《上海汽车》2021年第8期15-20,共6页Shanghai Auto

摘　　要：文章根据GB/T 19233-2020油耗测试标准,针对国六滑行阻力定义及其相对国五滑行阻力的不同,进行了试验条件、受力分析和计算方法对比,发现同等试验条件下,国六滑行阻力是国五的1.03倍。通过转毂滚动阻力修正、轮胎滚动阻力参数修正和温度修正,总结出国六滑行阻力的替代算法公式。对3辆样车进行替代算法与滑行法测试对比,偏差控制在最大9.8 N/1.2%以内,平均车速80 km/h时在5.8 N/1.4%以内。通过国六WLTC循环试验验证,循环能量差在0.017以内,证明了设备组合有效。该替代算法作为滑行法的补充,能够更好地满足日益多元化、灵活性的油耗申报需求。According to GB/T 19233-2020 fuel consumption test standard,the test conditions,force analysis and calculation methods are compared for the definition of coasting resistance and the difference of coasting resistance between China 6 and China 5.It is found that under the same test conditions,the coasting resistance of China 6 is 1.03 times that of China 5.Through the correction of hub rolling resistance,tire rolling resistance parameter and temperature,the alternative algorithm formula of the six sliding resistance is summarized.The comparison between the substitution algorithm and the taxiing method is carried out on three sample vehicles,and the deviation is controlled within 9.8 N/1.2%at the maximum,and within 5.8 N/1.4%at the average speed of 80 km/h.Through the WLTC cycle test of China 6,the cycle energy difference is less than 0.017,which proves that the equipment combination is effective.As a supplement to the gliding method,this alternative algorithm can better meet the increasingly diversified and flexible demand for fuel consumption declaration.

关 键 词：国六滑行阻力 替代算法 滚动阻力 滑行法 

分 类 号：U461.1[机械工程—车辆工程]