The analysis of new and used oil for concentration trends of wear metals and for formulation or depletion of additive package metals has been around for over 30 years. Wear metals such as copper (Cu) and iron (Fe) may indicate wear in an engine or any oil-wetted compartment. Boron (B), silicon (Si) or sodium (Na) may indicate contamination from dirt or antifreeze leading to a failure. Additive ...

The protection of the environment and pollution control are issues paramount importance. Researchers today engrossed in mitigating harmful impacts petroleum waste on environment. Lubricating oils, which essential for smooth operation engines, often disposed improperly after completing their life. In experimental work presented this paper, deteriorated engine oil was regenerated using acid treat...

Oil refining is an inevitable step in production of edible and industrial oil. Bleaching is the most important process among the refining processes. Bleaching adsorption is the most common method and clay is the most widely used adsorbent in this method. Disposal of bleaching clay, as a waste from re-refining plants, makes many environmental problems and economic losses. In the current study, t...

The investigation of Lubricated Friction and Wear is an extended study. The aim of this study is to investigate the friction and wear characteristics of Jatropha oil based biolubricant by using Cygnus Wear Testing Machine under load of 30N, a high rotating speed of 2000 rpm and one hour operation time. In this study, SEA 40 was used as a reference base lubricant. As a biolubricant various blend...

Tests were run with both R-12 and R-l34a in a water calorimeter. Refrigerant 12 was run with mineral oil as the lubricant. Evaporating and condensing heat transfer coefficients were calculated over a range of temperatures. To evaluate the impact of the lubricant on the heat transfer coefficients, a oil separator was added. Tests were then run with the oil separator over the same temperature ran...

The results of research on the process applying lubricating coatings are presented in this work. For purpose, plastic greases were used, which base oil is perfluoropolyether (PFPE) and thickener poly(tetrafluoroethylene) (PTFE). Due to their consistency, these materials classified into different classes according National Lubricating Grease Institute (NLGI). was carried out using a time-pressur...