Performance Analysis of single Cylinder Diesel Engine, Using Diesel Blended with Thumba Oil
Sunilkumar R. Kumbhar1, H. M. Dange2
1Mr. Sunilkumar R. Kumbhar, (M.E. student) Mechnical Engg. Department, P.V.P.I.T. College of Engineering Budhgaon, Sangli.
2Professor H. M. Dange, (Guide) Mechnical Engg. Deptartment, P.V.P.I.T. College of Engineering Budhgaon, Sangli.

Manuscript received on March 01, 2014. | Revised Manuscript received on March 04, 2014. | Manuscript published on March 05, 2014. | PP: 24-30 | Volume-4 Issue-1, March 2014. | Retrieval Number: A2068034114/2014©BEIESP
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Abstract: Depletion of nonrenewable source of energy (fossil fuels like petroleum, coal and natural gas) many researchers are looking forward to find an alternative source of renewable energy. One such alternative to diesel fuel is biodiesel. Biodiesel can be defined as fuel comprising of mono alkyl ester of long chain of fatty acid derived from vegetable oil or animal fat. So, there is an increasing interest in India to search for suitable alternative fuels that are environmental friendly. Environmental concerns and limited amount of petroleum resources have caused interests in the development of alternative fuels for internal combustion (I.C.) engines. As an alternative, biodegradable, renewable and sulphur free biodiesel is receiving increasing attention. The use of biodiesel is rapidly expanding around the world, making it imperative to fully understand the impacts of biodiesel on the diesel engine combustion process and pollutant formation. Therefore, in this study, the performance test of a variable compression diesel engine with neat diesel fuel and biodiesel mixtures was carried out. Experiments are carried out by using dual biodiesel blends and compared it with diesel fuel characteristics. The literatures were focused on single biodiesel and its blends. So far a very few dual biodiesel blends of oils have been tried on diesel engine leaving a lot of scope in this area. This paper investigated the performance and emission characteristics of various dual biodiesel blends (mixture of biodiesel and diesel fuel) of Thumba biodiesel on a single cylinder variable compression ratio diesel engine having bore diameter 87.50mm, developed power 3.5kw at 1500rpm, compression ratios 12 to 18, stroke length 110mm, water cooled engine. The biodiesel blends of B10% (combination of Diesel 90% by volume, biodiesel 10% by volume ) and B20% (combination of Diesel 80% by volume, biodiesel 20% by volume) gave better brake thermal efficiency and lower brake specific fuel consumption than other biodiesel blends. The blends of B10% and B20% have superior emission characteristics than other blends and closer to diesel values. From the experimental results obtained, Thumba oil blends are found to be a promising alternative fuel for compression ignition engines. At CR 18 BTE and BSFC of Thumba B10, B20 and BP of Thumba B40 showed better performance.CO, HC, CO2 of B100 of Thumba biodiesel showed less emission percentage/ppm, for NOx emission B10 and B20 of Thumba, biodiesel showed less emission ppm.
Keywords: Biodiesel, Blends, Thumba Biodiesel, Engine performance, Emission characteristics.