关键词: 汽车滑行试验；固定式风速仪滑行法；热车方法；试验方法；数据处理方法

Abstract: In order to improve the repeatability of vehicle coasting test data, a passenger car is used as the research object to conduct coasting tests on straight performance tracks. A reasonable, feasible, universal and efficient hot car, test and data processing method are proposed. The results show that the relative standard deviation of the arithmetic mean of the 8 round-trip data is small. On this basis, aiming at the minimum relative standard deviation, one datum is removed at a time, and two data is removed in total, the results show the relative standard deviation of the processed data is significantly reduced. The influence of speed deviation from reference vehicle speed Δv on the relative standard deviation is studied, and the results show that the larger the Δv, the smaller the relative standard deviation. This method has been applied to vehicles such as electric inverted three-wheeled vehicles, passenger cars and special vehicles. This paper has reference significance for the optimization of vehicle coasting test methods.

Key words: Vehicle coasting test; Stationary anemometer taxi method; Hot car method; Test method; Data processing method