Abstract: Energy saving and emission reduction is the inevitable choice for the sustainable development of the automobile industry. The fuel consumption of automobile is closely related to the efficiency of transmission system, the drive axle plays an important role in the transmission system of automobile. The article summarizes the drive axle transmission efficiency factors and engineering practice, provides ideas for the improvement and optimization of heavy commercial vehicle parts, and can also provide reference and reference for those engaged in drive axle design.

Key words: Energy Saving and Emission Reduction; Fuel Consumption; Transmission Efficiency; Bearing

摘要： 节能减排是汽车产业可持续发展的必然选择，汽车的燃油消耗量和传动系效率密切相关，驱动桥在汽车的 传动系中起着重要的作用。文章通过对车桥传动效率因素和工程实践进行总结为从事驱动桥设计人员提供参考、借 鉴。

关键词: 节能减排；油耗；传动效率；轴承