【摘要】 为了找到影响微型汽车后桥功率损耗的主要因素，对后桥内部与齿轮油性能存在关联的功率损耗组成进行了分析。基于某款微型汽车后桥的结构特点，通过对后桥样机开展传动效率测试，研究了齿轮油对后桥驱动桥传动效率的影响规律。试验结果表明：齿轮油的粘-温特性对后桥传动效率的影响较为明显；采用添加剂对齿轮油性能进行改良，发现最新的低粘度齿轮油技术可使后桥传动效率评价值提高约0.56%。更多还原

【Abstract】 In view of the main factors influencing the power loss of the rear axle of mini-car, the composition of power loss associated with gear oil performance is analyzed in this paper. Based on the structural characteristics of the mini-car rear axle, through manufacturing the rear axle prototype and carrying out the transmission efficiency test, influence of gear oil on the drive efficiency of rear axle is studied. The test results show that the viscosity-temperature characteristics of gear oil have obvious influence on the rear axle transmission efficiency. If the gear oil performance is improved with additives, the rear axle transmission efficiency can be improved by about 0.56% with the latest low-viscosity technology of gear oil.更多还原