• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (4): 263-270.doi: 10.3901/JME.260123

• 运载工程 • 上一篇    

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考虑效率的静液压驱动车辆燃油经济性控制

刘祺慧1, 孙晓鹏2, 马笑涵1, 吴维1   

  1. 1. 北京理工大学机械与车辆学院 北京 100081;
    2. 潍柴动力股份有限公司电控与软件研究院 潍坊 261000
  • 收稿日期:2025-02-11 修回日期:2025-09-11 发布日期:2026-04-02
  • 作者简介:刘祺慧,男,1995年出生,博士研究生。主要研究方向为车辆动力学与控制。E-mail:3120235500@bit.edu.cn
    吴维(通信作者),男,1983年出生,博士,教授,博士研究生导师。主要研究方向为车辆流体传动与智能控制,越野车辆动力学与智能控制。E-mail:wuweijing@bit.edu.cn
  • 基金资助:
    国家自然科学基金(52202465,52572440)、河北省优秀青年自然科学基金(E2023202007)、中国博士后科学基金(2023M741452、2025T180448)和爆炸科学与安全防护全国重点实验室(北京理工大学)开放基金(KFJJ24-11M)资助项目。

Research on Fuel Economy Control of Hydrostatic Propulsion Vehicles Considering Efficiency

LIU Qihui1, SUN Xiaopeng2, MA Xiaohan1, WU Wei1   

  1. 1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081;
    2. Electric Control and Software Research Institute, Weichai Power Co., Ltd., Weifang 261000
  • Received:2025-02-11 Revised:2025-09-11 Published:2026-04-02

摘要: 针对静液压驱动车辆,以实现车辆最佳燃油经济性为目标,提出考虑效率的静液压驱动车辆燃油经济性控制策略。首先分析系统燃油消耗量与发动机效率和静液压驱动系统效率之间的作用关系。在效率分析基础上,以系统燃油消耗量最低为优化目标,获取各油门开度和车速下发动机与静液压驱动系统联合高效工作的最优速比。建立系统仿真模型,对优化前后的控制策略进行仿真对比分析,结果表明循环工况下优化控制策略能够降低8.74%的燃油消耗量。为解决实际系统效率难以获取的难题,提出效率修正因子对理论控制策略进行修正。搭建样车试验平台,并通过样车试验对模型准确性与所提方法有效性进行了验证。40 km/h等速行驶试验结果表明,所提出的优化控制策略能够降低车辆百公里油耗,实现静液压驱动车辆良好的燃油经济性。

关键词: 静液压驱动, 无级变速传动, 燃油经济性, 泵马达控制, 效率

Abstract: To achieve optimal fuel economy for hydrostatic propulsion vehicles, a fuel economy control strategy considering pump and motor efficiency is proposed. Firstly, the role of system fuel consumption in relation to engine efficiency and hydrostatic drive system efficiency is analyzed. On the basis of the efficiency analysis, the optimal speed ratio for the joint efficient operation of the engine and hydrostatic propulsion system at various throttle openings and vehicle speeds is obtained with the goal of minimizing fuel consumption. A simulation model is established to compare the control strategies before and after optimization. The results indicate that the fuel consumption is reduced by 8.74% under cyclic operating conditions. To address the difficulty in obtaining practical system efficiency, an efficiency correction factor is proposed to modify the theoretical control strategy. A test vehicle is constructed, the model accuracy and the validity of proposed method are verified by vehicles. The results of a 40 km/h constant speed driving test demonstrate that the 100-kilometre fuel consumption is reducible by the proposed control strategy, achieving good fuel economy for hydrostatic propulsion vehicles.

Key words: hydrostatic propulsion, continuously variable transmission, fuel economy, pump motor control, efficiency

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