纯电动汽车经济性驾驶的影响因素及应用
Fundamental Factors and Applications of Eco-Driving for Electric Vehicles
王颖迪 1李庆锋 1王师 1刘伟 2王博远 2肖建华2
作者信息
- 1. 广州汽车集团股份有限公司 汽车工程研究院,广州 511434
- 2. 清华大学 车辆与运载学院,北京 100084
- 折叠
摘要
我国新能源汽车技术路线是以纯电驱动为主,随着纯电动汽车保有量的增加,降低其行驶能耗既符合国家节能减排的战略,又能改善用户的用车体验.基于某纯电动SUV车型的实际道路驾驶数据,通过相关性和降维分析得到加速度的方差是影响能耗的最关键因素;进而采用一维模型仿真,研究匀速、加减速和坡道3种典型工况下能耗的形成机理和优化方向,得到平衡能耗与行驶时长的经济性驾驶原则,如高速巡航时应适当降低车速,市区拥堵时控制加速度变化幅度,上下坡时利用车辆惯性,减少制动能量回收.
Abstract
Electrification has emerged as the main trend in new energy vehicles over the past decade.With the increasing number of EVs,reducing their energy consumption aligns with the national strategy for energy conservation and emission reduction,and also improves user's driving experience.The paper first analyzes actual road driving data from an electric SUV.Through dimensional reduction and correlation analysis,the acceleration variance is found as the key factor influencing energy consumption.Furthermore,three typical real-road operating conditions,i.e,constant speed driving,tip in/tip out,and ramp,are chosen for a parametric study by using a 1-D model.The trade-off between energy and time consumption is also discussed.Finally,several principles are established for eco-driving considering the acceleration and speed of vehicles,which include reducing speed during highway cruising,ensuring smooth driving in urban congestion,and utilizing vehicle inertia and minimizing regenerative braking on ramps.
关键词
纯电动汽车/经济性驾驶/能耗/相关性分析/降维分析Key words
electric vehicle/eco-driving/energy consumption/correlation analysis/dimensional reduction引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据