An extensive literature search and a confidential survey were critically analyzed to determine the effects of water on the stability of hydrofluorocarbon/synthetic lubricant systems and to identify key areas requiring further investigation. Following are highlights from the analysis: • Clathrate hydrates are solid solutions formed when water molecules are linked through hydrogen bonding creatin...

Dilution of engine oil with unburned fuels alters its lubricity and tribological properties. In this research paper, SAE-40 lubricating samples were contaminated known percentages (5%) (diesel, palm-sesame biodiesel blend (B30), B30 + ethanol, dimethyl carbonate, carbon nanotubes and, titanium oxide). The effect all these on wear frictional characteristics was determined by using a 4-ball tribo...

The application of mass spectrometric techniques for the analysis of the complex mix‐ tures inherent in fuel and lubricant samples will be examined. These samples because they are naturally complex mixtures, typically requires either very high resolution mass spectrometry or one of the hyphenated techniques gas chromatography‐mass spectrometry(GC‐MS) or liquid chromatography‐mass spectrometry (...

Recently, environmentally friendly and sustainable materials are being developed, searching for biocompatible efficient which could be incorporated into diverse industries fields. Natural esters investigated have emerged as eco-friendly high-performance alternatives to mineral fluids. This research shows the evaluations on thermal transport tribological properties of halloysite nanotubular stru...

The cyclic carbonate moiety finds many industrial applications because of its unique chemistry and properties. Phosgene, a highly toxic and corrosive reagent, has been utilized in the past to prepare low yields of fatty ester compounds (1) that contain a five-membered cyclic carbonate group. Herein, we show (CH3)4N HCO3, tetramethylammonium hydrogen carbonate (TMAHC), to react efficiently with ...

A most effective and less energy demanding method of producing fatty esters, diol esters, by esterifying fatty acids, with neopentyl and ethylenglycol alcohols in the presence of an acidic ion exchange resin catalyst(polyestyrendivinylbenzensulfated) was investigated at elevated temperature. In this process an azeotroping agent, toluene, was used to facilitate continuous removal of water by dis...

This paper reviews the effects of lubricant additives and base stock used in metal belt continuously variable transmissions (CVT) fluids on the CVT transmission torque capacity. Additive formulation composed of phosphorus anti-wear agent, calcium detergent, and dispersant improved the friction coefficient between the metals. The analysis on the post-test surface suggests that the friction behav...