Development of engine oil using palm oil as a base stock for four-stroke engines
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Author list: Cheenkachorn K., Fungtammasan B.
Publisher: Elsevier
Publication year: 2010
Journal: Energy (0360-5442)
Volume number: 35
Issue number: 6
Start page: 2552
End page: 2556
Number of pages: 5
ISSN: 0360-5442
Languages: English-Great Britain (EN-GB)
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Abstract
The use of palm oil as a base stock for an environmentally friendly lubricant for small four-stroke motorcycle engines is investigated. Palm oil was blended with mineral oil at different compositions to the viscosity requirement of commercial lubricant. A liquid additive package was added to improve the viscosity of the lubricant. A blend that meets the viscosity requirement was then chosen for physical and chemical property characterization and subjected to an engine test. The blend consists of 50.6% (wt.) palm oil, 41.6% mineral oil, and 7.8% additive package. The properties evaluated include viscosity, viscosity index, flash point, foaming characteristics, and wear scar. The engine performance and emission tests were carried out with a 125-cc motorcycle on a chassis dynamometer using a Bangkok Driving Cycle. Compared to a mineral-based commercial oil, the palm oil-based lubricant exhibits superior tribological properties, but offers no clear advantage on engine and emission performance. ฉ 2010 Elsevier Ltd. All rights reserved.
Keywords
Biodegradable lubricant, Four-stroke engine
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