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汽车安全与节能学报

汽车安全与节能学报 ›› 2025, Vol. 16 ›› Issue (1): 97-106.DOI: 10.3969/j.issn.1674-8484.2025.01.010

• 汽车节能与环保 • 上一篇    下一篇

直线增程系统匹配建模与负荷特性研究

张志远1,2(), 魏铄鉴1, 马煜国1, 冯慧华1,*(), 贾博儒1,*(), 帅石金3, 何洪文1   

  1. 1.北京理工大学 机械与车辆学院，北京 100081，中国
    2.新加坡国立大学 设计与工程学院，117575 新加坡
    3.清华大学 智能绿色车辆与交通全国重点实验室，北京 100084，中国
  • 收稿日期:2024-05-29 修回日期:2024-07-22 出版日期:2025-02-28 发布日期:2025-03-04
  • 通讯作者: * 冯慧华，教授。E-mail：fenghh@bit.edu.cn；贾博儒，副教授。E-mail：boru.jia@bit.edu.cn。
  • 作者简介:张志远（1994—），男（汉），河南，助理研究员。E-mail：zhiyuan_zhang@bit.edu.cn。
  • 基金资助:
    智能绿色车辆与交通全国重点实验室开放基金资助项目(KFY2405)

Research on matching modeling and load characteristics of linear range extender system

ZHANG Zhiyuan1,2(), WEI Shuojian1, MA Yuguo1, FENG Huihua1,*(), JIA Boru1,*(), SHUAI Shijin3, HE Hongwen1   

  1. 1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
    2. College of Design and Engineering, National University of Singapore, 117575, Singapore
    3. State Key Laboratory of Intelligent Green Vehicle and Mobility, Tsinghua University, Beijing 100084, China
  • Received:2024-05-29 Revised:2024-07-22 Online:2025-02-28 Published:2025-03-04

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摘要：

直线增程系统是自由活塞发动机与直线电机直接耦合而成的新型高效、高功率密度能量转换系统，为了合理匹配系统电磁负荷，提升系统运行稳定性，该文研究了相应设计参数下系统稳定运行负荷极限，确定了不同电磁负荷下系统运行特性。利用MATLAB/Simulink建立了系统热动力学耦合仿真模型，确定系统负荷极限范围，得到了负荷极限范围内随着负荷的改变系统运行特性和性能特性的变化规律。结果表明：负荷对于系统运行特性有着决定性作用，当负荷从392增大到538 N/(m·s-1)，系统运行频率从39.6减小到30.6 Hz，运行压缩比从15.0降低到6.0，指示热效率从41.4%降低到31.1%，系统输出功率从9.2 kW降低到5.3 kW，指示燃油消耗率由197.6 g/kWh增大到263.0 g/kWh。

关键词: 发动机控制, 直线增程系统, 混合动力, 多燃料发动机, 负荷特性

Abstract:

The linear extended range system is a new type of efficient, high power density energy conversion system which is directly coupled with free piston engines and a linear motor. In order to reasonably match the system electromagnetic load and improve the system operation stability, the stable operation load limit of the system under the corresponding design parameters was investigated, and the system operation characteristics under different electromagnetic loads were determined. The system thermodynamics coupling simulation model was established using MATLAB/Simulink to determine the system load limit range. The changes in system operating characteristics and performance characteristics as the load changes within the load limit range were obtained. The results show that when the load increases from 392 to 538 N/(m·s-1), the system operating frequency is reduced from 39.6 to 30.6 Hz, the operating compression ratio is reduced from 15.0 to 6.0, the indicated thermal efficiency is reduced from 41.4% to 31.1%, the system output power is reduced from 9.2 to 5.3 kW, and the indicated fuel consumption rate is increased from 197.6 to 263.0 g/kWh.

Key words: engine control, linear range extender, hybrid power, multi-fuel adaptable engine, load characteristics

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