Investigating The Tribological Behaviour of Bio-Lubricant Enhanced with Additives

Abstract

Due to the industrial revolution, the use of mechanical machinery and sales of the automobiles are increasing which leads to an increase in demand for lubricants. A lot of used synthetic lubricants is disposed of in the environment which is non-degradable, toxic and harmful in nature so the development of biodegradable lubricant is a necessity for the future generation to maintain a green environment. Bio-lubricant are the future need which is expected to decrease the dependence on imported petroleum products. Due to above reasons, this research was carried out to develop bio-lubricant and suitable blends of bio-lubricant to replace conventional lubricant in the automobile sector. There are two types of vegetable oil edible and non-edible vegetable oil. Non-edible plants can be grown on waste lands, land unsuitable for cultivation, railways roads, irrigation canals, Poverty stricken area, degraded forests. We are study on non-edible based bio-lubricant. Non-edible oil is selected as suitable vegetable oil for preparation of bio-lubricant from it because of having high oxidation stability, high viscosity index. We are select synthesis method for bi-diesel is esterification and synthesis method for bio-lubricant is tan- esterification. In the prepare the bio-lubricant, to improve the anti-wear properties anti-wear additives ZDDP (Zinc Dialkyl Dithio Phosphate) was added in 3% and 5% to prepare blend-1 and blend-2 respectively. The application selected for analysis is piston ring and cylinder lining of diesel engine. To check the wear rate and coefficient of friction between the piston ring and cylinder lining, the pin is prepared of piston ring material EN47 and disk is prepared of cast iron FG200 and mounted upon tribometer. The test for wear rate and coefficient of friction was conducted using prepared pin and disc and using veedol oil (20W40), Prepared Jatropha oil, blend-1 (3%ZDDP) and blend-2 (5%ZDDP) lubricant on pin on disc tribometer. Then compare wear and coefficient of friction of veedol oil, Jatropha oil, blend-1 (3% ZDDP), and blend-2 (5%ZDDP) in graphical format. Upon comparison, it was found that blend-2 shows a reduction I n wear rate than veedol oil (20W40). Hence veedol oil with the addition of anti-wear additives ZDDP can replace the conventional used veedol oil (20W40) as engine oil.