为提高黄河牌JN162型10吨载货汽车的燃油经济性,设计中特别注意到了驱动桥主传动比与发动机的匹配,为此,对几种匹配方案进行了计算、分析对比,选择了匹配比较适当的主传动比,使该车的燃料经济性取得了比较良好的效果。本文着重介绍主传动比的选择和燃油经济性的预测及其样车实测结果。且附带介绍了部分国内外重型柴油载货汽车的燃料经济性情况。 In order to improve the fuel economy of the Yellow River brand JN162 10-ton truck, special attention was paid to the matching of the main drive ratio of the transaxle with the engine in the design. For this reason, several matching schemes were calculated, analyzed and compared, Appropriate main drive ratio, the fuel economy of the car has made a relatively good effect. This article focuses on the choice of the main drive ratio and fuel economy prediction and its prototype measured results. And with the introduction of some domestic and foreign heavy-duty diesel trucks fuel economy.