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Research on the operation characteristics of a free-piston linear generator: Numerical model and experimental results

机译：无活塞直线发电机运行特性研究：数值模型和实验结果

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摘要

Free piston linear generator (FPLG) shows unique operation characteristics due to the elimination of crankshaft and connecting rod mechanism. This paper investigates its operation characteristics during each operating process based on the simulation and experiment results. During the starting process, the larger motor force during the starting process, the fewer times of reciprocating pistons which meet the condition of ignition. When the motor force reached 300 N, the prototype could adopt one-stroke starting strategy. During the intermediate process, it was found that the "gradually switching strategy" could help to achieve a smoother operation during the intermediate process. And the values of the operation parameters after the intermediate process were lower than those before the intermediate process. During the generating process, cycle-to-cycle variations were observed for piston TDC and in-cylinder gas pressure from the experimental results. According to the experimental results of the FPLG during the generating process, the calculated engine indicated power is 2.9 kW, and the corresponding indicated thermal efficiency is 37.3%. Additionally, based on the comparison of the FPLG performance, it is found that the parameters of the FPLG during the generating process are smaller than those when it was operated. during the second stage of the starting process, while much higher than those during the first stage of the starting process. (C) 2016 Elsevier Ltd. All rights reserved.
机译：由于取消了曲轴和连杆机构，自由活塞式线性发电机（FPLG）具有独特的运行特性。本文基于仿真和实验结果，研究了其在每个运行过程中的运行特性。在启动过程中，启动过程中的电动机力越大，满足点火条件的往复式活塞的次数就越少。当动力达到300 N时，原型机可以采用一冲程启动策略。在中间过程中，发现“逐步切换策略”可以帮助实现中间过程中的更平稳操作。并且中间工艺之后的操作参数值低于中间工艺之前的参数。在生成过程中，根据实验结果观察到了活塞TDC和缸内气压的逐周期变化。根据FPLG在发电过程中的实验结果，计算出的发动机指示功率为2.9 kW，对应的指示热效率为37.3％。此外，基于FPLG性能的比较，发现FPLG的参数在生成过程中要小于运行时的参数。在启动过程的第二阶段，而比在启动过程的第一阶段要高得多。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2017年第1期|32-43|共12页
  • 作者

    Guo Chendong; Feng Huihua; Jia Boru; Zuo Zhengxing; Guo Yuyao; Roskilly Tony;

  • 作者单位

    Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China|Newcastle Univ, Sir Joseph Swan Ctr Energy Res, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England;

    Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;

    Newcastle Univ, Sir Joseph Swan Ctr Energy Res, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Free-piston linear generator; The operation process; Piston dynamics; FPLG performance;

    机译：自由活塞式线性发电机;运行过程;活塞动力学;FPLG性能;

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