关键词: 纯电动汽车；四驱车型；加速性能优化；现场标定

Abstract: Based on the mass production battery electric four-wheel drive model, the acceleration performance is improved to achieve the acceleration target of the track version model. Under the condition that the vehicle architecture is basically fixed, the method of optimizing the current limit of the motor, the actual site test calibration of the motor torque limit before starting, the replacement of the semi-hot melt tire, the lightweight of the wheel hub, and the hot tire can improve the starting skid time. At the beginning of the proposal, simulation software is used to calculate the reduction of 100 km acceleration time of each plan, and then the calibration value is confirmed by on-site calibration at the real vehicle site. In the final test, the 100 km acceleration time is shortened by 0.4 s to 3.5 s, reaching the leading level in the 100 km acceleration performance of battery electric models of the same class. At the same time, in the follow-up development, in order to accelerate the performance improvement, the development scheme of the vehicle subsystem is accumulated, and the accumulation of the measured data of the tire-ground model is improved, which has certain reference significance for the development of the vehicle dynamic performance.

Key words: Battery electric vehicle; Four-wheel drive model; Acceleration performance optimization; Field calibration