Abstract:The present concept of being globally "green" puts additional demands on lubricants. They are to be biodegradable and ecofriendly. Therefore, in a search for alternate lubricants meeting the above demands, we have synthesized biodegradable new generation esters using alcohols such as 2,2-dimethyl-1,3-propane diol and 2,2-diethyl-1,3-propane diol and fatty acids like caproic and 2-ethyl caproic in presence of indigenous ion exchange resin catalyst. The synthesized esters were analyzed and characterized for their physico chemical properties. In addition, with a view to finding out the possibility of using these esters as aluminum cold rolling oils, their lubricity characteristics, biodegradability and toxicity were also investigated. The products were found to have good potential for use in biodegradable aluminum cold rolling oils meeting IS: 14385-2002 specification.
The wear of fuel injection system which supplies fuel to CI engine plays a dominant role on combustion behaviour of fuels as weD as on exhaust emission.Certain amount of fuel lubricity is required for mitigation of wear of these components. A simple laboratory test was devised using baD on disc machine. Various diesel fuels and n-cetane were evaluated. The paper describes a laboratory test method for assessing lubricity characteristics of fuels and compares its operating parameters with ASTM 0-5001 BOCLE test. It also discuss the effect of sulphur and fuel lubricity additive on wear.
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