International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Issue: 07 | July -2017
p-ISSN: 2395-0072
www.irjet.net
PRESSURE DISTRIBUTION AND LOAD CARRYING CAPACITY OF JOURNAL BEARING BY USING BIO OIL Mr. M.J.GITAY1, Prof. P.A. NARWADE2 1P.G
Scholar, ME Design, Department of Mechanical Engineering,D.V.V.P.COE, Ahmednagar, Maharashtra, India 2Professor, Department of Mechanical Engineering,D.V.V.P.COE, Ahmednagar, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract -Rapid decrease in petroleum resources, we
are in search of alternative sources for power generation and environmental hazards alarms to use eco-friendly alternative. Jatropha is a non-edible sourced Bio-lubricant shows excellent coefficient of friction, noble anti-wear capability, low environmental emission. Recent research states Jatropha have higher viscosity and improves the load carrying capacity. Comparative study of popular synthetic lubricant (i.e. 20W40, Turbinol XT46 oil) with Jatropha oil has been carried out. The friction forces and the hydrodynamic friction coefficients are calculated and compared. Rapid depletion of petroleum resources and environmental hazards alarms to use eco-friendly alternative. Jatropha is a non-edible sourced Bio-lubricant shows low coefficient of friction, anti-wear capability, low environmental hazardous. The research states that Jatropha have high in viscosity and improves the load carrying capacity. Key Words:Bio-lubricant, Jatropha, journal bearing, load carrying capacity, pressure distribution and viscosity.
1.INTRODUCTION Lubricant is a substance that reduces wear and friction by formation of thin oil film in between the contacting areas of two mating bodies. Removal of heat, prevention against corrosion, transmission of power is the basic functions of lubricating oil. Lubricant roles as seal between the two moving boundaries layers and hence trap and remove the wear particles forms in between them. To perform this role lubricating oil must possess some specific chemical and physical characteristics. The viscosity of the lubricant is the principal characteristic of the lubricating oil which greatly influences the friction and wear reduction and thus increases the overall efficiency of power transmission. [1] At present the world is dealing with increasing crude oil price, depletion of crude oil reserves and global environmental concern about preventing the environment from pollution, have generated awareness in the society for developing and using the environment friendly alternative lubricant from derived sources. Non-edible vegetable oil based bio-lubricants. are environment friendly as they are bio-degradable, non-toxic and having zero contribution in greenhouse effect. Overall vegetable
Š 2017, IRJET
oil based lubricants exhibits several excellent properties compared to the mineral oils. Potential of these non-edible sourced bio-lubricants for automotive application is discussed. Non-edible sourced lubricants lave enhanced lubricity, good antiwear property, higher viscosity and viscosity index, low evaporation and emission, increased equipment life and high load carrying capacity. [2] Vegetable oil can be used as lubricants in their natural form. Advantages of vegetable oil are that they show higher viscosity index and flash point compared with the mineral oil. Limiting side is that they are susceptible to oxidation hence low oxidation stability, low temperature limitation and unpleasant smell, filter clogging tendency at lower temperature. [3] Properties of Jatropha oil contaminated biolubricant are determined by using Cygnus wear setup and four-ball tribo testing machines setup. Jatropha oil (JO) by volume fraction of 15-55% has been blended with the base lubricant SAE-40 oil to formulate the bi*o-lubricants. Results showed that the lubrication regime occurred during the test was boundary lubricated while the main wear mechanisms are abrasive and adhesive wear. Lowest wear was found with the addition of 12% Jatropha oil in SAE 40 oil and above 22% concentration of JO in SAE 40 oil, the wear rate get increased considerably. The result of tribotest shows an addition of Jatropha oil in the base lubricant shows excellent lubricant additive characteristics, which reduce the friction and wear scar diameter by maximum 35% and 30% respectively during the tribo test. The application of 11% bio- lubricants in the automotive engines will enhance the mechanical efficiency and take part to reduce the dependency on petroleum oil as well. [4]
2JATROPHA BIO-LUBRICANTS Jatropha Bio-lubricant is a non-edible sourced vegetable oil which shows potential characteristics to be used as bio lubricant as it have high viscosity and viscosity index compared to other vegetable oils which are close to the commercially used synthetic oils. Analysis showed that the viscosity, density, thermal conductivity and pour point of Jatropha were higher than the values of SAE 20W40 oil engine oil while specific heat, flash point and refractive
| Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal |
Page 1981