Rheological Analysis on Thumba Oil for Sustainable Bio-Lubricant in Electric Vehicle Application

Abstract

The demand for automotive lubricant increasing and consequences in dumping of lubrication oil leads towards the bio lubricants. The present study analyzes rheological properties of Thumba oil to have sustainable lubricant to electric vehicle. The oil samples are tested in plain and with MWCNT and Cerium oxide (CeO2) nanoparticles. It was observed MWCNT and CeO2 made 11% and 9% improvement in viscosity at lower shear rate respectively, however no significant change was observed at higher shear rate. Shear thinning nature of thumba oil biolubricant reduce with the dispersion of nanoparticles and hence contributed in enhancement of lubrication behaviour

Latest developments in designing advanced lubricants and greases for electric vehicles—An overview

“…This is a vital relationship for the development of good thermal cooling fluids, which act as a heat sink for elevated temperatures caused by the power electronics and motor in EVs. Galgat et al analysed the tribological and rheological properties of tamanu oil as a bio‐lubricant with either MWCNTs or CeO 2 additives for EVs 54 . The study discovered that an adequate dispersion of the nano‐additives resulted in an improvement of lubrication as viscosity decreased as a function of shear rate resulting in characteristic shear‐thinning behaviour 54 .…”

“…Galgat et al analysed the tribological and rheological properties of tamanu oil as a bio‐lubricant with either MWCNTs or CeO 2 additives for EVs 54 . The study discovered that an adequate dispersion of the nano‐additives resulted in an improvement of lubrication as viscosity decreased as a function of shear rate resulting in characteristic shear‐thinning behaviour 54 . Moldovanu et al presented enhanced tribological properties for four raw vegetable oils upon addition of MoS 2 .…”

“…54 The study discovered that an adequate dispersion of the nano-additives resulted in an improvement of lubrication as viscosity decreased as a function of shear rate resulting in characteristic shear-thinning behaviour. 54 Moldovanu et al presented enhanced tribological properties for four raw vegetable oils upon addition of MoS 2 . Importantly, the effect of the additive depended on the physical and chemical properties of the vegetable oil, such as the polyunsaturated/saturated ratio (P/S).…”