Abstract：According to GB 21861—2014, the loaded braking performance test should be added into vehicle test programs from the 1st March of 2017, and the loading method should apply lift loading on brake test platform. Using the platform with adjustable lifting height, the adaptability of the test method of lift loading for vehicles was investigated, and the test principles and the detail method of lift loaded braking test were analyzed. The lift loaded braking tests were performed for twoaxle automobile, dualaxis automobile, threeaxle automobile and threeaxis trailer. The test results show that it is not suitable for twoaxle and dualaxis automobiles to adopt lift loaded braking test because the test results are not obvious. For threeaxle automobile, the lifted axle load is increased by 79.2% after lift loading, and the braking force is increased by 46.4%. The increasing range of axle load after lift loading is great, which indicates that it is suitable to utilize platform lift loading method on intermediate axle of threeaxle automobiles. For threeaxis trailer, the lifted axle load has significant change after lift loading, which shows that it is suitable to adopt platform lift loading method to conduct loaded braking tests.
2017, Vol. 38 
