摘要
为验证8×8全电驱动越野车电机液压(简称电液)联合全液压制动系统的可靠性,依据新一代轮式机动平台独立电驱动车辆制动系统性能指标要求,以某型号8×8全电驱动越野车为研究对象,对新一代电液联合全液压制动系统进行了原理方案设计;考虑系统的长管路特性对输出制动性能的影响,搭建了与整车元件、管路布置1∶1的实验平台,分析了不同工况下全液压制动系统的输出特性。结果表明:新一代电液联合全液压制动系统的输出制动力、制动响应时间等满足整车制动力12.0 MPa、响应时间0.2~0.3 s的制动性能指标要求;制动输出压力与制动踏板的位移及变化率呈线性关系;当电控系统发生故障时,依靠全液压制动系统仍然能满足整车的制动需求。
A principle and scheme of a electro-hydraulic full hydraulic brake system for 8×8 electric drive off-road vehicle is designed according to the performance index requirements of brake system for independent electric drive vehicle.In considering the influence of the system s long pipeline characteristics on the output braking performance,a test platform with the whole vehicle components and pipeline arrangement at ratio of 1∶1 was built,and the output characteristics of the whole hydraulic brake system under different working conditions were studied.The results show that the output braking force and braking response time of the new electro-hydraulic full hydraulic brake system meet the requirements of braking performance index(braking force of 12.0 MPa,and response time of 0.2 s-0.3 s);the braking output pressure is linearly related to the displacement and change rate of the brake pedal;when the electric control system fails,the whole hydraulic brake system can still meet the braking demand of the whole vehicle.
作者
陈晋市
刘思远
王同建
霍东阳
张美荣
张飞
CHEN Jinshi;LIU Siyuan;WANG Tongjian;HUO Dongyang;ZHANG Meirong;ZHANG Fei(School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130025,Jilin,China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,Jilin,China;Scientific Research Institute,Inner Mongolia First Machinery Group Co.,Ltd.,Baotou 014000,Inner Mongolia,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2021年第2期422-429,共8页
Acta Armamentarii
基金
国家自然科学基金项目(51705189)。
关键词
越野车
制动系统
电液联合制动
全液压制动
制动性能
实验验证
off-road vehicle
brake system
electro-hydraulic braking
full hydraulic braking
braking performance
experimental verification
