Low-temperature flow behaviour of vegetable oil-based lubricants

The present investigation aims at studying the flow behaviour of magnesium alloys under different conditions in terms of temperature, deformation velocities and deformation. The modelling approach was based on a proposed equation to model the shape of each flow curve through different variables. The modelled flow curves were subsequently compared with those obtained with experiments. The models were validated on flow curves not used in the building stage. It was observed that, for low temperature values, high deformation velocities and deformations the final part of the flow curve has to be adapted in order to be adopted for the description of material in the numerical simulation. In other words it needs to be extrapolated. Also for the high temperature, the flow softening has to be limited in order to allow the extrapolation queue required for elevated deformations. The deformation value at which the extrapolation can start can be predicted with an other proposed equation detailed in the paper.

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03/01645 Low-temperature flow properties of vegetable oil/ cosolvent blend diesel fuels

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(03)91761-9 ◽

2003 ◽

Vol 44 (5) ◽

pp. 289

Keyword(s):

Low Temperature ◽

Vegetable Oil ◽

Flow Properties ◽

Diesel Fuels

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Combustion Characteristics of Hydrotreated Vegetable Oil-Diesel Blends under EGR and Low Temperature Combustion Conditions

International Journal of Automotive Technology ◽

10.1007/s12239-019-0054-3 ◽

2019 ◽

Vol 20 (3) ◽

pp. 569-578 ◽

Cited By ~ 3

Author(s):

Sombat Marasri ◽

Pop-Paul Ewphun ◽

Prathan Srichai ◽

Chinda Charoenphonphanich ◽

Preechar Karin ◽

...

Keyword(s):

Low Temperature ◽

Vegetable Oil ◽

Combustion Characteristics ◽

Low Temperature Combustion ◽

Temperature Combustion

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Low Temperature Properties of Waste Edible Vegetable Oil Rejuvenated Asphalt Binder with Recycled Tire Rubber

Journal of Testing and Evaluation ◽

10.1520/jte20160337 ◽

2017 ◽

Vol 46 (2) ◽

pp. 20160337 ◽

Cited By ~ 1

Author(s):

D. Zhang ◽

M. Chen ◽

S. Wu ◽

J. Zheng ◽

Y. Sang

Keyword(s):

Low Temperature ◽

Vegetable Oil ◽

Asphalt Binder ◽

Tire Rubber ◽

Edible Vegetable Oil

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TRIBOLOGICAL PERFORMANCE OF PALM KERNEL OIL WITH ADDITION OF POUR POINT DEPRESSANTS AS A LUBRICANT USING FOUR-BALL TRIBOTESTER UNDER VARIABLE LOAD TEST

Jurnal Teknologi ◽

10.11113/jt.v79.11896 ◽

2017 ◽

Vol 79 (7-3) ◽

Author(s):

Aiman, Y. ◽

Syahrullail, S. ◽

W. J. Yahya

Keyword(s):

Surface Roughness ◽

Low Temperature ◽

Vegetable Oil ◽

Palm Kernel ◽

Mineral Oil ◽

Load Test ◽

Palm Kernel Oil ◽

Kernel Oil ◽

Temperature Performance ◽

Low Temperature Performance

The growing of worldwide trend for promoting the use of the renewable material such as vegetable oil is due to the increasing concern about environmental damage that caused by the use of mineral oil which is not biodegradable. Vegetable oil has a potential to replace mineral oil as a lubricant because of its specific properties that is non-toxic and biodegradable. The main problem in using vegetable oil is having poor low temperature performance. In this research palm kernel oil (PKO) that behave a semi solid phase is used as a bio lubricant mixing with different weightage percentage of poor point depressant (PPD) to investigate the low temperature behaviour performance and also to determine the effect of lubricity performance when blended with different percentage of PPD (5w%, 10wt%, 20wt% and 30wt %). The experiment is according to ASTM D4172 with variation load test. The result of the experiment show that for low temperature performance, PKO with 20wt%PPD (A2-20%) and 30wt%PPD (A2-30%) show great performance which can withstand 15℃. The sample A2-20% shows good lubricity performance in terms of coefficient of friction compare to the other sample. The lubricity performance in terms of wear scar diameter (WSD) it can see that the different percentage PPD do not affect the WSD properties of the pure palm kernel oil. The most consistent and the desired value of the sample in terms of surface roughness is A2-5% and A2-10% where the surface roughness value is stable through the entire load test.

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