液压与气动2025，Vol.49Issue(3)：61-72,12.DOI:10.11832/j.issn.1000-4858.2025.03.008
循环球式液压助力转向器助力特性分析及优化
Analysis and Optimization of Power Assist Characteristic of Circulating Ball Type Hydraulic Power Steering Gear
摘要
Abstract
Steering gear is the linchpin of hydraulic power steering system,critically impacting vehicle comfort and handling stability.Rotary valve,as a key component of the steering gear,determines its performance.A profound comprehension of the rotary valve's operating principles and the influence of its parameters on assisted characteristics is paramount for enhancing the performance of the steering system.Initially,this study introduces the composition of the hydraulic power steering system and elucidates its operational principles during straight-line driving and steering maneuvers.Subsequently,based on these operational principles,an AMESim model is developed to investigate the effects of various parameters,including torsion bar stiffness,engine speed,short cut length,axial length of pre-opening gap,width of pre-opening gap,and groove widths,on the power assist characteristic curve.Finally,experimental validation is conducted on the optimized steering gear.The results demonstrate that following structural optimization,the input hand torque of the steering gear decreased by 15.5%,with an overall inward shift observed in the assist characteristic curve,ultimately leading to improved comfort of vehicles.关键词
转向器/AMESim/助力特性曲线/阀口过流面积Key words
steering gear/AMESim/power assist characteristic curve/flow area of valve port分类
机械工程引用本文复制引用
张伟,李昊,孙磊,赵文涛,王旭光,刘少鑫..循环球式液压助力转向器助力特性分析及优化[J].液压与气动,2025,49(3):61-72,12.基金项目
山东省自然科学基金青年基金(ZR2020QE299) （ZR2020QE299）
山东省企业技术创新项目(202350400261) （202350400261）
滕州市自主创新及成果转化计划(SDPR-2023-0060009) （SDPR-2023-0060009）
