关键词: 轻型纯电动汽车；轮胎；续驶里程；能量消耗量

Abstract: The article selectes two types of tires and assembled them on a light pure electric vehicle respectively, then conducts road resistance tests and range and energy consumption bench tests to investigate the influence of tires on the range and energy consumption of light pure electric vehicles. The test results of road resistance testing show that there is a significant difference in road resistance between the two types of tires, with the highest difference at low speed points. After conducting range and energy consumption tests on a chassis dynamometer for China light vehicle test cycle (CLTC), the results show that, with the same other vehicle parameters, selecting A brand 245/50ZR18 tires resultes in a 2.8% lower energy consumption, 3.6% higher range, and 3.0% lower energy consumption from external power sources compared to selecting B brand 245/45R19 tires. The difference in tires simultaneously affects the road resistance, power system efficiency, and kinetic energy recovery effect of the entire vehicle, resulting in differences in driving range. Therefore, reasonable tire selection plays a certain role in improving driving range, and targeted testing and optimization are needed during the development and validation stage of the prototype. This study can also provide certain engineering case support for determining whether the whole vehicle has the same declared driving range under different tire configurations when conducting type approval of the Ministry of Industry and Information Technology's announcement catalog for light pure electric vehicles.

Key words: Light pure electric vehicle; Tires; Driving range; Energy consumption