Formulation and tribological behavior of ultra-low sulfur diesel fuels microemulsified with glycerin

Uchôa, Igor Micael Alves; Deus, M. S.; Neto, Eduardo Lins de Barros

doi:10.1016/j.fuel.2021.120257

Cited by 4 publications

(1 citation statement)

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“…Moreover, poor lubricity can cause energy losses within an engine due to friction. Many failures in the automotive and aviation industries due to the misfunctioning of fuelling systems led to the detailed investigation of fuel lubricity [18,22]. In the molecular structure of fuels, sulphur, a high unsaturation degree, a long alkyl chain length, polyaromatic, nitrogen, polar oxygen-containing compounds and fatty acid contents enhance fuel lubricity [20].…”

Section: Introductionmentioning

confidence: 99%

Tribological Performance of Biomass-Derived Bio-Alcohol and Bio-Ketone Fuels

et al. 2021

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This study relates to developing future alternative fuels and focuses on the effects of a fuel’s molecular structure on its properties and performance in advanced propulsion systems. The tribological performance of various biomass-derived oxygenated alternative fuels, including butanol, pentanol, cyclopentanol, cyclopentanone, and gasoline and their blends with diesel, was investigated. Lubricity tests were conducted using a high-frequency reciprocating rig (HFRR). Cyclopentanone-diesel and cyclopentanol-diesel blends result in smaller wear scar sizes compared to using their neat forms. A lower steel disc contaminated with the alternative fuels during the HFRR tests resulted in worn surface roughness values lower than those of the neat diesel by up to 20%. It is believed that these reductions are mainly due to the presence of the hydroxyl group and the carbonyl group in alcohols and ketones, respectively, which make them more polar and consequently helps the formation of the protective lubrication film on the worn moving surfaces during the sliding process. Overall, the results from this study indicate that environmentally friendly cyclopentanol and cyclopentanone are practical and efficient fuel candidates for future advanced propulsion systems.

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Section: Introductionmentioning

confidence: 99%