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Numerical Simulation of Surface Temperature Fluctuation and Thermal Barrier Coating at the Piston Top for a Diesel Engine Performance Improvement
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 06, 2021 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: SAE WCX Digital Summit
Low heat rejection (LHR) combustion has been recognized as a potential technology for further fuel economy improvement. This paper aims to simulate how the piston top’s thermal barrier coating affects the engine’s thermal efficiency and emissions. Accordingly, a Thin-wall heat transfer model in AVL Fire software was employed. The effects of increasing the piston top surface temperature, comparing different thermal barrier coating material, were simulated at the engine’s rated power operating point, so as the piston top’s surface roughness. In comparison to a standard diesel engine, the indicated thermal efficiency (ITE) could increase by 0.4% when the surface temperature of the piston top changed from 575K to 775K. Comparing among the different coating materials, SiRPA (quartz reinforced porous anodic alumina), Zirconia (zirconium oxide), and YSZ (yttria-stabilized Zirconia), SiRPA was found to be the most effective one in term of thermal flux reduction, which could promote ITE by 0.8%. The simulation also showed the piston top’s roughness after coating should not be neglected. It suggested that to minimize the surface roughness of the thermal barrier coating would be beneficial for the engine ITE improvement. The result of this paper will be a useful reference for the LHR combustion system design and optimization.
- Yong Yin - Tongji Universtiy
- Zhijun Wu - Tongji University
- Zongjie Hu - Tongji Universtiy
- Quan Long - Tongji University
- Weiqi Ding - Tongji Universtiy
- Minglong Li - Tongji Universtiy
- Xiao Han - Dongfeng Commercial Vehicle Co., Ltd.
- Qisheng Liu - Dongfeng Commercial Vehicle Co., Ltd.
- Liguang Li - Tongji Universtiy
Data Sets - Support Documents
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- Juttu , S. , Thipse , S.S. , Marathe , N.V. et al. CFD Study of Combustion Chambers for Lower Engine Exhaust Emissions from Diesel Engines Operated in HCCI and Conventional Diesel Mode SAE Technical Paper 2009-26-027 2009 https://doi.org/10.4271/2009-26-0027
- Changpu , Z. , Yunyao , Z. , Junwei , Y. et al. Effects of Combustion Chamber Geometry on the Combustion and Emissions of a Turbocharged Inter-Cooling Diesel Engine Transactions of CSICE 31 4 318 323 2013
- Jaichandar , S. , and Annamalai , K. Combined Impact of Injection Pressure and Combustion Chamber Geometry on the Performance of a Biodiesel Fueled Diesel Engine Energy 55 330 339 2013 10.1016/j.energy.2013.04.019
- Guan Xiong , C. 2014 10.7666/d.D636459
- Kogo , T. , Hamamura , Y. , and Nakatani , K. High Efficiency Diesel Engine with Low Heat Loss Combustion Concept Toyota’s Inline 4-Cylinder 2.8-Liter ESTEC 1GD-FTV Engine SAE Paper 2016-01-0658 2016 http://dx.doi.org/10.4271/2016-01-0658
- Siyuan , G. , Changlu , Z. , Yunlong , L. et al. influence of Coolant Temperature on Diesel Engine Heat and Power Conversion Efficiency Transactions of the Chinese Society for Agricultural Machinery 43 3 28 32 2012 10.6041/j.issn.1000-1298.2012.03.006
- Uchihara , K. , Ishii , M. , Nakajima , H. , Wakisaka , Y. et al. A Study on Reducing Cooling Loss in a Partially Insulated Piston for a Diesel Engine SAE Technical Paper 2018-01-1276 2018 https://doi.org/10.4271/2018-01-1276
- Noboru , U. , Hideaki , O. et al. A New Piston Insulation Concept for Heavy-duty Diesel Engines to Reduce Heat Loss From the Wall SAE Technicaal Paper 2017-24-016 2017 https://doi.org/10.4271/2017-24-0161
- David , K. , et al.
- Uchida , N. , and Osada , H.A. New Piston Insulation Concept for Heavy-Duty Diesel Engines to Reduce Heat Loss from the Wall SAE Int. J. Engines 2017-24-0161 2017 10.4271/2017-24-0161
- Graz 2017
- Graz 2017