基于空气动力学的商用纯电动皮卡车迎风阻力优化设计

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中图分类号：U461.1 文献标识码：A DOI:10.3969/j.issn.1674-8484.2025.06.009

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Aerodynamic drag optimization design of a commercial battery electric pickup truck

CHEN Chunju,LIXiaohua*，YUXianzhong，QI Qi,ZOUJiayi (JianglingotorsCompanyLimited,Nanchang3oooo,China)

Abstract:A modular optimization scheme for aerodynamic components was proposed to enhance the performance ofacommercial pure electric pickup truck built ona traditionalfuel vehicle platform.The research combined computational fluid dynamics (CFD)simulation,wind tunnel testing,and coast-down testing to analyze,optimize,and validate the vehicle's aerodynamic performance.The simulations using STAR-CCM+ software identifiedanexcessvely high front face,anuneven underbody,and poor sealing tobe the three majorsources of aerodynamic drag.The investigation focused on eight key components,including the front airdam,sidesteps,and roof rack,toexamine theiraerodynamic efectsand drag reductionmechanisms.The results indicate that theoptimized design reduces the drag coefficient (Cd) by 21.06% in CFD simulations and by 20.6% in wind tunnel tests.The deviation of less than 3% between these values confirms the reliability of the CFD model.Coast-down tests further demonstrates a 6.3% increase indrivingrange.Thiswork provides practical engineeringmethodologiesand experimental evidence fortheaerodynamicdevelopmentof

commercial“fuel-to-electric”convertedpickuptrucks

Key words:electric pickup truck;aerodynamic drag;air dam; side steps; roof rack; wind tunnel

在国家新能源战略与燃油经济性标准持续升级的背景下，汽车能耗优化已成为研发重点，其中风阻系数（204 (Cd) 作为影响能耗的关键参数，其优化尤为重要[1-4]。（剩余16188字）