汽车工程 ›› 2021, Vol. 43 ›› Issue (2): 232-240.doi: 10.19562/j.chinasae.qcgc.2021.02.011

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柴油机气缸垫状态参数预测与结构优化研究

董意1,刘建敏1,李普2,刘艳斌1(),乔新勇1   

  1. 1.陆军装甲兵学院车辆工程系,北京 100072
    2.中国人民解放军第六四五六工厂,南阳 473000
  • 收稿日期:2020-07-17 修回日期:2020-09-17 出版日期:2021-02-25 发布日期:2021-03-04
  • 通讯作者: 刘艳斌 E-mail:aafelyb@163.com
  • 基金资助:
    军内科研项目“数字孪生技术驱动的装备动力系统健康管理研究”(2019ZB124)

Research on Prediction of State Parameters and Structure Optimization of Diesel Engine Cylinder Gasket

Yi Dong1,Jianmin Liu1,Pu Li2,Yanbin Liu1(),Xinyong Qiao1   

  1. 1.Vehicle Engineering Department,Army Academy of Armored Forces,Beijing 100072
    2.Chinese People’s Liberation Army No. 6456 Factory,Nanyang 473000
  • Received:2020-07-17 Revised:2020-09-17 Online:2021-02-25 Published:2021-03-04
  • Contact: Yanbin Liu E-mail:aafelyb@163.com

摘要:

为提高某重型柴油机气缸垫的可靠性和疲劳寿命,基于其温度场、热机耦合应力场和变形情况等状态参数利用相关方法对气缸垫的工作参数进行了优化研究。利用正交实验方法分析了缸垫的气缸圆直径、上水孔圆直径、隔热带长度、缸垫厚度和螺栓预紧力等5个工作参数对上述3个状态参数的影响规律,并确定了影响最为显著的4个工作参数。利用所提出的混合神经网络模型建立了工作参数与状态参数的对应关系模型,结合所提出的改进灰狼算法计算确定了气缸垫的最优工作参数值。分析结果表明改进后气缸垫的温度应力和变形情况得到显著改善,证明了改进的有效性和算法的准确性。

关键词: 柴油机, 气缸垫, 优化, 混合神经网络, 改进灰狼算法

Abstract:

In order to improve the reliability and fatigue life of a heavy?duty diesel engine cylinder head gasket, based on its state parameters such as temperature field, thermal?mechanical coupling stress field and deformation, the working parameters of the cylinder head gasket are optimized using related methods. The orthogonal experiment method is used to analyze the influence of the five working parameters of cylinder circle diameter, water hole circle diameter, heat insulation strip length, cylinder gasket thickness and bolt pre?tightening force on the above three state parameters, with the four most significant working parameters defined . Using the proposed hybrid neural network model, the corresponding relationship model between the working parameters and the state parameters is established, and the optimal working parameter value of the cylinder head gasket is calculated and determined in combination with the proposed improved gray wolf algorithm. The finite element analysis results show that the temperature stress and deformation of the cylinder head gasket after the improvement have been significantly improved, which proves the effectiveness of the improvement and the accuracy of the algorithm.

Key words: diesel engine, cylinder head gasket, optimization, hybrid neural network, improved grey wolf algorithm