平衡阀对车辆液压驱动系统的影响研究
Research on the Influence of Balance Valve onVehicle Hydraulic Drive System
投稿时间:2021-06-28  修订日期:2021-09-07
DOI:
中文关键词:  液压驱动  越野车辆  平衡阀  实验验证  AMESim仿真
英文关键词:Hydraulic drive  off-road vehicle  balance valve  experimental verification  AMESim simulation
基金项目:国家重点研发计划项目(2018YFB2000902)
作者单位邮编
陈伟 吉林大学 机械与航空航天工程学院 130022
冯吉宇 吉林大学 机械与航空航天工程学院 
刘长宜 吉林大学 工程仿生教育部重点实验室 
谭鹏 吉林大学机械与航空航天工程学院 
赵庆波 一汽-大众汽车有限公司
一汽-大众汽车有限公司 
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中文摘要:
      为了改善轮式越野车辆的安全性、稳定性,研究驱动系统中关键元件平衡阀对轮式越野车辆液压行走驱动系统性能的影响,以某越野车辆的液压行走驱动系统为研究对象,建立了平衡阀的理论分析模型,运用AMESim软件建立了越野车辆液压驱动系统模型,分析了平路行驶工况、下坡行驶工况下驱动系统中泵、马达和平衡阀的压力及转速变化情况,并通过实验验证了仿真模型的准确性。分析结果表明平衡阀在液压驱动系统中具有平衡负负载、防止供油不足及下坡时防止马达失速的作用。针对下坡过程中的冲击现象,通过对平衡阀阀芯控制端阻尼槽槽深和阻尼孔直径优化分析发现,改变阻尼槽槽深可以有效减小压力冲击,槽深由0.55mm降为0.35mm背压可减小12.5%。理论模型和仿真模型为越野车辆液压行走驱动系统的进一步优化提供了可靠依据。
英文摘要:
      To improve the safety and stability of off-road vehicles, the impact of the key element balance valve in the drive system on the performance of the off-road vehicles hydraulic driving system is studied. The hydraulic driving system of the off-road vehicle is taken as an example to establish the theoretical analysis model of balance valve. By means of establishing the hydraulic drive system model of the off-road vehicle through AMESim software, the pressure and speed of the pump, motor and balance valve in the drive system under flat road driving conditions and downhill driving conditions is analysed. The correctness of the simulation model is verified through experiments. The results indicate that the balance valve has the function of balancing negative loads,preventing insufficient fuel supply and motor stalls on downhill condition. In order for improving the shock in downhill process, damping groove depth and orifice diameter at the control end of balance valve spool is optimized. Through the analysis results, it is found that changing the damping groove depth can effectively reduce the pressure shock, and when the groove depth is reduced from 0.55mm to 0.35mm,the back pressure can be reduced by 12.5%. The theoretical model and simulation model provide a reliable basis for the further optimization of the hydraulic driving system of the off-road vehicle.
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