吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1049-1055.doi: 10.13229/j.cnki.jdxbgxb201504004

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电液复合制动系统踏板感觉及其影响因素

刘杨1, 2, 孙泽昌1, 2, 冀文斌1, 2   

  1. 1.同济大学 新能源汽车工程中心,上海 201804;
    2.同济大学 汽车学院,上海 201804
  • 收稿日期:2013-10-25 出版日期:2015-07-01 发布日期:2015-07-01
  • 通讯作者: 孙泽昌(1953),男,教授,博士生导师.研究方向:电液复合制动技术及电池成组与管理技术.
  • 作者简介:刘杨(1986),男,博士研究生.研究方向:电液复合制动技术及整车能耗分析.E-mail:021lytj@tongji.edu.cn
  • 基金资助:
    “973”国家重点基础研究发展计划项目(2011CB711202)

Brake pedal feeling and its influencing factors for electro-hydraulic brake system

LIU Yang1, 2, SUN Ze-chang1, 2, JI Wen-bin1, 2   

  1. 1.Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
    2.School of Automotive Studies, Tongji University, Shanghai 201804, China
  • Received:2013-10-25 Online:2015-07-01 Published:2015-07-01

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摘要： 针对采用一体式制动主缸开发的电液复合制动系统,分析了系统正常和失效模式下踏板力的传递路径,研究了不同模式下踏板感觉及其影响因素。设计了组合弹簧式踏板感觉模拟器,并利用AMESim建立了系统不同工作模式的简化模型;仿真分析了活塞阻尼系数、推杆回位弹簧预紧力、电磁阀最大通流面积和助力比等参数对踏板力-行程曲线的影响;台架试验表明,正常模式和失效模式下踏板力-行程滞回损失分别为11.5%和15.3%,制动踏板特性满足设计需求。

关键词: 车辆工程, 电液复合制动系统, 踏板感觉, 滞回损失

Abstract: For the proposed electro-hydraulic brake system based on an integrated master cylinder, the pedal force transmission paths were analyzed under normal and failure operation modes. The pedal feeling and its influence factors were investigated. A pedal feeling simulator was designed with cluster springs, and simplified models under different operation modes were established using AMESim. The parameters, such as the piston damping coefficient, which affect the pedal force-stroke curve, the pedal rod return spring preload force, solenoid valve flow area and booster ratio, were studied by simulation. Bench test results show that the brake pedal characteristics could meet the design requirements, and the pedal force-stroke hysteresis losses are 11.5% for normal mode and 15.3% for failure mode, respectively.

Key words: vehicle engineering, electro-hydraulic brake system, pedal feel, hysteresis loss

中图分类号: 

  • U463.5
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