高转速条件下镁合金金属V带CVT传动效率分析  

Analysis of transmission efficiency of magnesium alloy V belt CVT at high speed

作　　者：董超 郑大宇[1] DONG Chao;ZHENG Dayu(School of Light Industry,Harbin University of Commerce,Harbin 150028,China)

机构地区：[1]哈尔滨商业大学轻工学院,哈尔滨150028

出　　处：《哈尔滨商业大学学报（自然科学版）》2023年第5期571-575,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：金属V带无级变速器(CVT)具有良好的经济性、动力性及舒适性等优点,符合新能源汽车节能环保的要求.随着电机输入转速的不断增加,CVT金属带中金属片的离心力与金属环的离心力也会随之增大,进而可能影响CVT的传动效率.而镁合金材料具有密度小、比强度高及循环利用等优点,深受航空、医疗以及生物等多个领域追捧.针对这一问题,使用镁合金金属片、金属环替代轴承钢金属片、金属环,可以使金属带轻量化,减小金属带的离心力,从而提高CVT的传动效率.分析结果表明,应用镁合金金属带,相较于之前的轴承钢金属带,CVT在运行中的摩擦功率损失得到有效降低,进而提高其传动效率.The metal V-belt endless transmission(CVT)had the advantages of good economy,power and comfort,which met the requirements of energy saving and environmental protection of new energy vehicles.With the increase of the input speed of the motor,the centrifugal force of the metal sheet and the centrifugal force of the metal ring in the CVT metal belt also increased,which affected the transmission efficiency of the CVT.Magnesium alloy material had the advantages of light specific gravity,high specific strength and recycling,and was sought after by many fields such as aviation,medical treatment and biology.To solve this problem,this paper used magnesium alloy sheet and metal ring instead of bearing steel sheet and metal ring,which could make the metal belt lightweight,reduce the centrifugal force of the metal belt,and improve the transmission efficiency of CVT.The analysis results showed that the friction power loss of CVT in operation could be effectively reduced by using magnesium alloy metal belt compared with the previous bearing steel metal belt,and the transmission efficiency could be improved.

关 键 词：无级变速器 高转速 镁合金 轻量化 金属带 传动效率 

分 类 号：U463[机械工程—车辆工程]