| PATTERNS-BASED COATING OF PISTON SKIRT FOR ADDED BENEFITS DURING HYDRODYNAMIC LUBRICATION IN INTERNAL COMBUSTION ENGINES
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| Ali Usman 1,2, Marcus Liwicki 3, Andreas Almqvist 4, Cheol Woo Park 5 |
1Division of Machine Learning, Luleå University of Technology
2rtment of Mechanical Engineering, COMSATS University Islamabad
3Division of Machine Learning, Luleå University of Technology
4Division of Machine Elements, Luleå University of Technology
5School of Mechanical Engineering, Kyungpook National University |
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| ABSTRACT |
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Friction has been a significant research concern for decades. Most of the energy input into an internal
combustion (IC) engine is wasted because it is used to overcome friction. Scientific developments have been made to reduce
friction, including surface coatings and surface textures, which have emerged as potential solutions to reducing friction
throughout the lubricating regimes. This study combines surface texturing with the coating approach to investigate the
frictional response. Realistic tribo-dynamics (secondary motion of the piston skirt) are considered during actual engine-like
conditions to explore the effects of pattern-based coating on friction in hydrodynamic lubrication. Results show a remarkable
reduction in friction and encourage the pattern-based development of surface coatings to extend the benefit across lubricating
regimes. Consequently, the surface coated with optimized patterns had 7.98 ± 0.34 % reduced energy loss per engine cycle as
compared with the surface coated without a pattern. |
| Key Words:
Tribological performance, Surface coatings, Surface texture, piston skirt, Secondary motion
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Corresponding Author.
Cheol Woo Park , Email. 
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