The purpose of this study is to determine whether piston friction can be reduced by applying a micro-pattern to the skirt portion of the piston, which accounts for the largest proportion of engine parts. The roughness of the ready-made pistons was reduced before etching the micro-scale pattern onto the piston skirt. The micro-patterns were screen-printed on the piston skirt, and kept uniform through etching. The friction reduction effect of the piston was confirmed through an engine experiment using a 1.6 L four-cylinder gasoline engine to remove parts. A hexagonal shape that is representative of bionic textures was selected for the micro-pattern, and circular and cross-hatch patterns were additionally produced for comparison. The friction experiments with the patterning pistons confirmed that friction was reduced by up to 6.74 % by adjusting the spacing of the hexagonal pattern. It was also confirmed that friction was reduced in the cross-hatch pattern by up to 5.28 %. The friction reduction effect may vary depending on the parameters used for a specific pattern.
Reduction of Piston Skirt Friction Using the Micro-scale Patterned Surface
Int.J Automot. Technol.
International Journal of Automotive Technology ; 24 , 1 ; 15-22
2023-02-01
8 pages
Article (Journal)
Electronic Resource
English
Analysis on Piston Skirt Friction - Effect of Oil Film Distribution on Piston Skirt -
British Library Online Contents | 2015
|A Study of Friction Reduction by ‘Soft Skirt’ Piston
SAE Technical Papers | 2011
|A Study of Friction Reduction by `Soft Skirt' Piston
British Library Conference Proceedings | 2011
|A Study of Piston Skirt Friction – Effect of ‘Soft Skirt
British Library Conference Proceedings | 2010
|Piston skirt friction in internal combustion engines
Automotive engineering | 1989
|