Wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester as an engine lubricant

Zulkifli, Nurin Wahidah Mohd and Kalam, Md. Abul and Masjuki, Haji Hassan and Shahabuddin, M. and Yunus, Robiah (2013) Wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester as an engine lubricant. Energy, 54. pp. 167-173. ISSN 0360-5442, DOI https://doi.org/10.1016/j.energy.2013.01.038.

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Official URL: https://doi.org/10.1016/j.energy.2013.01.038


This paper presents the experimental results carried out to evaluate wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester using a four-ball machine for different regime of lubrication. The TMP ester is produced from palm oil, which is biodegradable and has high lubricity properties such as a higher flash point temperature and VI (viscosity index). Three different regimes of lubrications are investigated, which hydrodynamic, elasto hydrodynamic and boundary lubrications. Under these test conditions, the wear and friction characteristics of different TMP samples are measured and compared. For boundary lubrication, it is found that up to 3% addition of Palm oil-based TMP ester in OL (ordinary lubricant) decreases the maximum amount of WSD (wear scar diameter) and reduces (COF coefficient of friction) up to 30%. Highest amount of load (220 kg) carrying capacity was also found from the contamination of 3% TMP. For hydrodynamic lubrication, addition of 7% of TMP reduces the friction up to 50%. It is well known that mechanical efficiency of machinery component increases with decreasing COF. The results of this investigation will be used to develop new and efficient lubricant to substitute the petroleum-based lubricant partially for automotive engine application. © 2013 Elsevier Ltd.

Item Type: Article
Funders: University of Malaya: research grant FRGS FP020/2011A, PV070/2011B and high impact research grant no UM.C/HIR/MOHE/ENG/07
Uncontrolled Keywords: Sliding wear; Biolubricant; Coefficient of friction; Lubrication
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Nov 2019 07:15
Last Modified: 19 Nov 2019 07:15
URI: http://eprints.um.edu.my/id/eprint/23060

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