提升无级变速器高压输出压力精度的方法分析  

Analysis on the Method of Improving the Precision of CVT High Pressure Output Pressure

作　　者：王瑞雪 刘星 卢钦强 王燕妮 WANG Rui-xue;LIU Xing;LU Qin-qiang;WANG Yan-ni(Liuzhou Saike Technology Development Co.,Ltd.,Liuzhou Key Laboratory of Electrified Powertrain Electronic Control,Liuzhou 545007,China)

机构地区：[1]柳州赛克科技发展有限公司、柳州市电气化动力总成电子控制重点实验室,广西柳州545007

出　　处：《液压气动与密封》2023年第7期85-88,共4页Hydraulics Pneumatics & Seals

摘　　要：无级变速器(简称CVT)具有结构简单,速比连续可调,换挡平顺等特点。CVT的速比连续可调是通过调节主从动油缸工作油压范围,从而调整作用在金属带上的夹紧力比值来改变金属带在主从动带轮上运行的节圆半径来实现,主从动油缸压力精度是实现CVT特点的关键参数。基于某公司的CVT平台产品,提出影响高压油路压力精度的影响因素,并通过有效控制手段实现压力高精度。CVT is characterized by simple structure,continuously adjustable speed ratio and smooth shifting.The continuously adjustable speed ratio of CVT is realized by adjusting the working pressure range of the Primary and Secondary cylinder,so as to adjust the ratio of the clamping force acting on the metal belt to change the pitch radius of the metal belt running on the Primary and Secondary pulley.The control pressure accuracy of the Primary and Secondary pulley is the key parameter to realize the characteristics of CVT.Based on the CVT platform products of a listed company,this paper puts forward the factors that affect the control pressure accuracy of high-pressure pipeline,and realizes high-precision pressure through effective control means.

关 键 词：液压控制系统 控制压力影响因素 先导压力管控 泄漏量管控 

分 类 号：TH137[机械工程—机械制造及自动化]