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The full or partial replacement of commercial marine engine oil with bio oil, on the example of linseed oil

Malinowska Małgorzata

Journal of KONES

2019

Vol. 26, No. 3

129--135

The bio-oils are considered to sustainable, alternative and environmentally friendly source of lubricants compared to commercial engine oils, on the base a mineral, synthetic or semi-synthetic. They are obtained from natural raw material (vegetable or animal oils), which are renewable and non-toxic to humans, living organisms and environment. The vegetable oils called green oils, natural oils, bio-oils or natural esters. They can be obtained from plant seeds, that may be consumed – edible oils (for instance: rapeseed oil) or which cannot be consumed – inedible (for example: linseed oil). The conducted research into linseed oil and its different quantity additives (25% and 50%) to commercial marine mineral oil intended for a medium-speed 4-stroke, trunk marine engine (i.e. Marinol RG 1240). The flash point and dependence of viscosity and temperature were compared and assess. It has been proven that vegetable oils have a high ignition temperature and very small viscosity change in the range of temperatures presented, i.e. high viscosity index. According to the results, it can be recommended the addition of 25% linseed oil in the base lubricant is the relevant for lubricating a medium speed 4-stroke marine engine. The vegetable additives can improve a viscosity index a lube oil, and they will be positively affected environmental protection

Tribological behaviour of biolubricants in concentrated contacts

Drabik J., Pawelec E., Rogoś E., Urbański A., Wiśniewski M.

Problemy Eksploatacji

2003

nr 1

167-174

Experimentally determined tribological properties of biolubricants based on the vegetable oils have been presented. Several oils and greases with the vegetable crude stocks have been tested on the Four-Ball Testing Machine and its modified version. The wear, scuffing and pitting characteristics of the point contacts, that have been lubricated with a number of environmentally acceptable or products, have been determined. It has been shown that the tested vegetable oil based lubricants, act very good against rubbing wear, seizure and surface fatigue of contacting elements.

W artykule zaprezentowano wyniki badań właściwości smarnych olejów roślinnych stanowiących samodzielne środki smarowe bądź stosowanych jako baza olejowa nietoksycznych smarów plastycznych. Testy tribologiczne prowadzono na aparacie czterokulowym wg metody standardowej, jak również zmodyfikowanej w warunkach zacierania. Oceniono powierzchniowe zużycie zmęczeniowe łożysk smarowanych badanymi środkami. Wyznaczono prawdopodobieństwo wystąpienia uszkodzenia węzłów tarcia smarowanych opracowanymi kompozycjami smarowymi.