Transactions of Society of Automotive Engineers of Japan
Online ISSN : 1883-0811
Print ISSN : 0287-8321
ISSN-L : 0287-8321
Research Paper
Effect of Piston Pattern-Coating on Lubrication Conditions and Friction (Fourth Report)
-Evaluation of Oil Film Distribution with Polka Dots Patterns Using Visualization-
Seiji Kokuzawa, Hisanobu Kawashima, Kunihiko Kobayashi, Naoki Yamakawa, Akemi Ito, Hidekazu Suzuki, Tsuneaki Ishima
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Keywords: Heat Engine, Engine Component, Tribology, Piston, Friction, Oil film
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2019 Volume 50 Issue 4 Pages 993-998

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Abstract
To analyze oil film behavior between piston and cylinder is a significant topic for reducing the friction loss in internal combustion engines. The oil film thickness is measured by LIF (Laser Induced Fluorescence) method in a visualization engine. Pattern-coating pistons with polka dots that had a difference in friction have been tested. As a result, the differences in oil film thickness by pattern coating that affects friction are observed.
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© 2019 Society of Automotive Engineers of Japan, Inc.
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