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Surface Microtexture Fabrication and Temperature Gradient Regulation of Micro Wankel Engine

Author

Listed:
  • Tianfeng Zhou

    (Key Laboratory of Fundamental Science for Advanced Machining, Beijing Institute of Technology, Beijing 100081, China)

  • Ying Wang

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

  • Jiangtao Che

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

  • Benshuai Ruan

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

  • Jinxiang Liu

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

  • Xibin Wang

    (Key Laboratory of Fundamental Science for Advanced Machining, Beijing Institute of Technology, Beijing 100081, China)

Abstract

Nowadays, micro engine miniaturization is one of the most challenging issues, especially for the design and fabrication of the high-power-density micro Wankel engine. With the decrease of the size of the micro engine, the problem of the heat deformation of the cylinder becomes more serious. In this paper, a micro Wankel engine with microtextures on the outer surface of the cylinder is designed and manufactured to diffuse the heat dissipation and regulate the temperature gradient, so as to increase the power output density. First, a series of finite element simulations are conducted to design a type of ideal surface microtexture. Then, the machining condition is optimized to fabricate microtextures by micro cutting on the cylinder surface by studying the processing parameters. Finally, the performance of the new micro Wankel engine in terms of the temperature gradient regulation and the mechanical power output is tested and compared with that of the un-textured micro engine. The comparison results show that temperature of the textured micro engine was dropped from 185 °C to 125 °C and the mechanical power output increased by 10.74% from that of its un-textured counterpart, verifying the proposed methods for temperature gradient regulation.

Suggested Citation

  • Tianfeng Zhou & Ying Wang & Jiangtao Che & Benshuai Ruan & Jinxiang Liu & Xibin Wang, 2019. "Surface Microtexture Fabrication and Temperature Gradient Regulation of Micro Wankel Engine," Energies, MDPI, vol. 12(19), pages 1-16, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3725-:d:272047
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    References listed on IDEAS

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