静液驱动系统低压回路增压装置工作特性研究  

Analysis of Working Characteristics of Low Pressure Circuit Supercharger for Hydraulic Drive System

作　　者：王赫 马彪[1,2] 李超 朱礼安[3] Wang He;Ma Biao;Li Chao;Zhu Li'an(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Collaborative Innovation Center of Electric Vehicle in Beijing,Beijing 100081,China;Jianglu Machinery&Electronics Croup Co.,Ltd.,Xiangtan City,Hunan Province 411100,China)

机构地区：[1]北京理工大学机械与车辆学院,北京市100081 [2]北京电动车辆协同创新中心,北京市100081 [3]江麓机电集团有限公司,湖南省湘潭市411100

出　　处：《农业装备与车辆工程》2021年第8期26-31,共6页Agricultural Equipment & Vehicle Engineering

基　　金：基础创新产品技术研究项目(JCCPCX201705)。

摘　　要：为改善车辆冷却风扇静液驱动无级调速装置开式回路液压泵吸油不足的问题,在开式静液驱动低压回油路中增加增压补油装置,使其构成闭式或半闭式静液驱动。分析了增压装置的内部结构与回路机理,建立了增压装置内部回路数学模型,进一步利用AMESim搭建具有增压装置的静液驱动调速回路模型,仿真分析了调速回路中增压装置的工作特性规律。结果表明,增压补油回路中的节流孔径对其工作性能有显著影响,在满足系统正常工作的范围内,节流孔径越大,补油能力越强,增压装置的效率也越高。In order to improve the problem of insufficient oil absorption of the open circuit hydraulic pump of the vehicle cooling fan,the supercharger is added to the open hydraulic drive low-pressure circuit to form a closed or semi-closed static hydraulic drive system.The internal structure and loop mechanism of the supercharger are analyzed.The mathematical model of the internal circuit of the supercharger is established.The model of hydraulic drive speed control loop with supercharger is built by AMESim,and the working characteristics of supercharger is simulated and analyzed.The results show that the throttle diameter in the supercharger has a significant effect on its working performance.In the range that meets the normal working conditions of the system,the larger the throttle diameter,the stronger the oil filling capacity,and the higher the efficiency of the supercharger.

关 键 词：静液驱动 增压装置 AMESim模型 喷嘴-射流管 工作特性 

分 类 号：TH137.7[机械工程—机械制造及自动化]