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Thermal Load Analysis of Piston Damaged by Wall-Wetting Combustion in a Heavy-Duty Diesel Engine

Author

Listed:
  • Haiying Li

    (China North Engine Research Institute, Tianjin 300400, China)

  • Yaozong Li

    (China North Engine Research Institute, Tianjin 300400, China)

  • Yanzhao An

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Yi Zhang

    (School of Energy and Power Engineering, North University of China, Taiyuan 038507, China)

  • Zhicheng Shi

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Weiqing Zhu

    (China North Engine Research Institute, Tianjin 300400, China)

  • Yongping Qiang

    (China North Engine Research Institute, Tianjin 300400, China)

  • Ziyu Wang

    (China North Engine Research Institute, Tianjin 300400, China)

Abstract

Piston damage is a frequent problem of engine durability and plays an important role in an engine’s performance design. Recently, a large amount of piston erosion has occurred in a series of heavy-duty diesel engines. To investigate the reason for the piston erosion, a study of the computational fluid dynamics (CFD) of the combustion process in the cylinder and finite element analysis (FEA) of piston was carried out under different initial temperatures. The results show that when the initial temperature decreases from 380 K to 307 K, the mass of wall-wetting increases by 73%, and the maximum combustion pressure increases from 8.1 MPa to 11 MPa; when the initial temperature decreases from 350 K to 328 K, the highest temperature at the throat of the valve pocket increases by nearly 100 K, doubling the temperature fluctuation; and in the case of 328 K, areas exceeding 700 K are concentrated on the top surface of the piston, and the temperature gradient in the depth direction of the throat position decays rapidly.

Suggested Citation

  • Haiying Li & Yaozong Li & Yanzhao An & Yi Zhang & Zhicheng Shi & Weiqing Zhu & Yongping Qiang & Ziyu Wang, 2023. "Thermal Load Analysis of Piston Damaged by Wall-Wetting Combustion in a Heavy-Duty Diesel Engine," Sustainability, MDPI, vol. 15(19), pages 1-19, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14634-:d:1256135
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    References listed on IDEAS

    as
    1. Chen, Haiyan & Shi, Zhongjie & Liu, Fushui & Wu, Yue & Li, Yikai, 2022. "Non-monotonic change of ignition delay with injection pressure under low ambient temperature for the diesel spray combustion," Energy, Elsevier, vol. 243(C).
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