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Surface Microtexture Fabrication and Temperature Gradient Regulation of Micro Wankel Engine
- Source :
- Energies, Volume 12, Issue 19, Energies, Vol 12, Iss 19, p 3725 (2019)
- Publication Year :
- 2019
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2019.
-
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 &deg<br />C to 125 &deg<br />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.
- Subjects :
- 0209 industrial biotechnology
Control and Optimization
Fabrication
Materials science
finite element simulation
020209 energy
Wankel engine
Energy Engineering and Power Technology
Mechanical engineering
02 engineering and technology
lcsh:Technology
micro- Wankel engine
micro cutting
Cylinder (engine)
law.invention
temperature gradient
020901 industrial engineering & automation
Machining
law
0202 electrical engineering, electronic engineering, information engineering
Miniaturization
Electrical and Electronic Engineering
Engineering (miscellaneous)
Mechanical energy
lcsh:T
Renewable Energy, Sustainability and the Environment
Finite element method
Temperature gradient
surface microtexture
Energy (miscellaneous)
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Database :
- OpenAIRE
- Journal :
- Energies
- Accession number :
- edsair.doi.dedup.....bd89e7b23fef317e9f413d58256cafe7
- Full Text :
- https://doi.org/10.3390/en12193725