Comparison Of Bio-Oil And Synthetic Lubricants Tribological Characters
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Date
2022-07-25
Authors
Ramlan, Nur Diyana
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Bio-lubricants have been developed as an alternative to mineral oil-based
lubricants because of environmental concerns and the diminishing supply of petroleum.
Vegetable oils (red palm oil, soybean oil, coconut oil and sunflower oil) were studied
as bio-lubricants and their mixes with anti-wear additives in order to determine their
potential usage in car engines. A four-ball tester and pin-on-disc were used to conduct
the experiments under ASTM standard. For benchmarking reasons, the performance
was compared to that of commercial engine oil.
The reduction in friction and wear was negligible when using an equal ratio of
vegetable oil and mineral oil. A considerable improvement in friction and wear was
seen with the addition of 1% wt of Titanium Dioxide nanoparticles to vegetable oils.
Using this addition, the friction coefficient of vegetable oils was comparable to that of
a commercial engine oil. Anti-wear agent and friction modifier are all perform by
Titanium Dioxide in vegetable oils. In terms of wear-resistance and oxidative stability, the disadvantage of pure vegetable oils is determined to be greater compared to friction when all the data are considered. This effect was pronounced when combined with mineral oils, when their tribological performance predominated. However, using the commercial anti-wear
Titanium Dioxide additive, the vegetable oils showed promise as an alternative
lubricant for automobile engine systems, despite the fact that there is still considerable
room for improvement.