The lubricating properties of used engine oil

Kawamura, Masuhiko; Fujita, Kenji; Ninomiya, Kiyoshi

doi:10.1016/0043-1648(82)90103-x

Cited by 17 publications

(1 citation statement)

References 2 publications

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“…But with usage of oil in the engine increase in wear scar diameter was observed and was much higher in case of vegetable oils when compared to a fully formulated commercial engine oil sample. This found to be related to the extent oil oxidation 31,32) . Variation of coefficient of friction with time for coconut, palm and engine oil is shown in Fig.…”

Section: Resultsmentioning

confidence: 80%

Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine

Mannekote

Kailas

2011

Tribology Online

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In the present work the evaluation of coconut and palm oil as lubricants in four-stroke engine was carried out and the performance was compared with commercially available engine oil. The tribological properties of oil samples collected from the engine at regular interval were evaluated by means of four ball tester. The emissions from engine were monitored by using exhaust gas analyzer. It was observed that antiwear properties of fresh vegetable base oils and engine oil were comparable at ambient conditions. The observed deviation with usage was linked to the oxidation and the absence of additives in vegetable oil. The increased wear with commercial engine oil was due to depletion of additives. Increased fuel efficiency and reduction in the concentration of oxides of carbon and nitrogen in the emission observed with vegetable oil based lubricant was linked to its high flash point.

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Section: Resultsmentioning

confidence: 80%