风洞试验是研究汽车动力特性的重要手段,可以为降低燃油消耗、改善行驶性能提供依据。文中对1∶5的客车模型进行了风洞试验研究,得出3种前部形状减阻效果的分析,指出棱角过渡的前部造型边角稍加圆滑可以达到很好的减阻效果。车身表面压力分布的测试结果,可为合理选择发动机冷却进出风口提供依据。 Wind tunnel test is an important means to study automobile dynamic characteristics, which can provide the basis for reducing fuel consumption and improving driving performance. In this paper, wind tunnel tests on a 1: 5 bus model are conducted, and three kinds of drag reduction effects on the front are obtained. It is pointed out that a slight smoothing of the front corner of the corner transition can achieve a good drag reduction effect. Body surface pressure distribution test results can provide a reasonable basis for the choice of engine cooling air inlet.