Effects of sunflower oil added to base oil on the friction coefficient of statically loaded journal bearings

Durak, Ertuğrul; Çetinkaya, M.; Yeinigün, B.; Karaosmanoğlu, Fìlìz

doi:10.1002/jsl.3000210304

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…At 100°C, blends with up to 3% sunfl ower oil had friction close to one of the base oils; higher concentrations led to increase of the coeffi cient of friction. 8 In a similar study, Durak and Karaosmanoglu 9 demonstrated that cottonseed oil at concentrations between 2.5 and 10% reduces the friction coeffi cient of mineral oil at room temperature.…”

Section: Introductionmentioning

confidence: 94%

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

Bantchev

Biresaw

2008

Lubrication Science

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Two polyalphaolefi ns, of higher and lower viscosity than vegetable oils, were used to make binary blends of varying compositions with soy bean and canola oils. The pure oils and the blends were used in viscosity and fi lm thickness investigations. The effects of composition and temperature on viscosity were found to agree well with the theoretical predictions of a simple mixing law. The fi lm thicknesses of the various blends under elastohydrodynamic conditions were measured at 20 N load, and varying entrainment speeds and temperatures. From the data, pressure-viscosity coeffi cients, α, as a function composition and temperature were obtained. The resulting α values were compared with theoretical predictions. Experimental values of α as a function of composition showed a slight negative or no deviation from the values predicted by an ideal mixing model. On the other hand, experimental values of α displayed a mild decrease with increasing temperature, while the model predicted a sharp decrease with increasing temperature. Published in

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Section: Introductionmentioning

confidence: 94%

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

Bantchev

Biresaw

2008

Lubrication Science

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“…This polar structure is able to form an effective boundary layer. Durak et al (2004) state that vegetable oils exhibit good lubricity because they contain organic straight-chain compounds with polar end groups. These polar end groups can be adsorbed on a metallic surface, which decreases or suppresses the surface energy and causes a reduction of the friction coefficient.…”

Section: Lubricity Properties Of Diestermentioning

confidence: 99%

Lubricity and Tribological Properties of Dicarboxylic Acid and Oleyl Alcohol Based Esters

Salimon¹,

Ahmed²,

Salih³

et al. 2015

JSM

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“…13 Very few efforts have been made by researchers to investigate the performance of journal bearings using vegetable oils. Durak et al 14 formulated biodegradable lubricants by blending different proportions of sunflower oil with mineral oil and then testing in journal bearings at different temperatures. The results showed that a base oil added with a small quantity of sunflower oil exhibited a lower friction coefficient, especially under lower operating conditions and temperatures.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of the efficacy of vegetable oil-based nanolubricants for improving journal-bearing performance

Dhanola

Garg

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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The present experimental study explores the performance of Hydrodynamic journal bearings operating with vegetable oil-based nanolubricants. For this study, titanium oxide nanoparticles have been added to canola oil by varying the volume fraction from 0% to 0.04%. An assessment of performance characteristics has been done by using a journal-bearing test rig under different operating conditions. The outcome of the experimental results aimed at the addition of nanoparticles to base lubricants to improve the performance was observed to be favorable. However, under high operating conditions, the influence of nanoparticles is observed to be less useful. The fluid film pressure of nanolubricants increased up to a specific volume concentration of titanium oxide nanoparticles (i.e. 0.02%) beyond which no further enhancement was observed. At a load of 3000 N, the fluid film pressure increased up to 10%, when a bearing is lubricated using canola oil with a 0.02% volume fraction of nanoparticles. The heat transfer rate was found to be higher for nanolubricants in comparison to a base oil and the fluid film temperature was reduced by up to 15% at a volume fraction of 0.04%. Furthermore, rheological studies reveal that the prepared nanolubricants exhibited Newtonian behavior under the given conditions. The percentage increment of viscosity varied from 2.1% to 15.4% and 2.43% to 13.89% for a volume fraction ranging from 0.01% to 0.04% at a temperature of 40 °C and 100 °C, respectively. The dynamic light scattering results confirmed that the particles were well distributed in a base lubricant without much aggregation.

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Effects of sunflower oil added to base oil on the friction coefficient of statically loaded journal bearings

Abstract: In this study, sunflower oil at difSerent concentrations of between

Cited by 10 publications

References 10 publications

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

Elastohydrodynamic study of vegetable oil–polyalphaolefin blends

Lubricity and Tribological Properties of Dicarboxylic Acid and Oleyl Alcohol Based Esters

Experimental analysis of the efficacy of vegetable oil-based nanolubricants for improving journal-bearing performance

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