车辆载荷对重型车滑行阻力的影响研究  

Research on the Influence of Vehicle Load on Heavy Vehicle Coastdown Resistance

作　　者：王儒梟 马厚岩 夏坤 尚勋 WANG Ruxiao;MA Houyan;XIA Kun;SHANG Xun(CATARC Automotive Test Center(Tianjin)Co.,Ltd.,Tianjin,300300,China;Beijing Futian Daimler Automobile Co.,Ltd.)

机构地区：[1]中汽研汽车检验中心(天津)有限公司,天津300300 [2]北京福田戴姆勒汽车有限公司

出　　处：《小型内燃机与车辆技术》2024年第5期17-21,27,共6页Small Internal Combustion Engine and Vehicle Technique

摘　　要：为提高实验效率及数据准确性,对某重型车在不同载荷情况下进行实际道路滑行实验。通过空载计算其余载荷阻力系数与满载计算其余阻力系数两种方法,得到了阻力系数计算公式。结果显示,通过满载计算得到的其余载荷阻力值与实测值相差较大,平均误差超过10%,最大误差超过15%;满载阻力系数乘以固定值得出的其余载荷下的阻力值,与车辆实测阻力值相差较大。高速段误差较低,但低速段阻力误差超过20%;而通过空载计算得到的其余载荷阻力值与实测值的误差小于5%,计算结果能更好地反映车辆道路阻力。In order to improve the experimental efficiency and data accuracy,the actual road taxiing experiment of a heavy vehicle under different loads was carried out.The drag coefficient calculation formula is obtained by two methods:no-load calculation and full-load calculation.The results show that the error between the other load resistance values calculated by full load calculation and the measured values is large,the average error is more than 10%,and the maximum error is more than 15%.The resistance value under other loads obtained by multiplying the full load resistance coefficient by the fixed value has a large error from the measured resistance value of the vehicle.The error of high speed section is low,but the drag error of low speed section is more than 20%.The error between the other load resistance values obtained by no-load calculation and the measured values is less than 5%,and the calculated results can better reflect the road resistance of vehicles.

关 键 词：车辆载荷 重型车 滑行阻力 

分 类 号：U467.12[机械工程—车辆工程]