Abstract—Humans have used fossil fuels as their main source of energy, since the industrial revolution. But, the remaining quantity of fossil fuels on the earth is limited. The dramatic increase in usage of fossil fuels has also caused unprecedented changes to the global environment and climate. A country like Sri Lanka which totally depends on fossil fuels has a main risk of running out of sufficient fuel by 2050. Therefore the requirement for alternative methods is immense. Use of bio-diesel is one of the answers found. However, pure bio-diesel is not recommended for conventional engines due to number of operational deficiencies. Therefore finding an optimal combination has been a concern over the years. In the presented paper different blends of bio-diesel and petro-diesel were tested in a conventional 2 cylinder Kubota tractor engine. Variations of speed versus torque, speed versus power and the environmental factors through emission levels were measured and presented. In addition fuel consumption, cost and engine vibration were also measured and presented. Considering all possibilities, a combination of 20% bio-diesel and 80% petro-diesel gives the optimum performance for a diesel engine with comparatively better performance than normal diesel. Further the study effectively discusses the results of environmental and economic advantages of bio-diesel made with waste cooking oil.
Index Terms—Bio-diesel, Kubota, Petro-diesel, Fossil-fuel,Emission
R.P.Manorathna is with the Department of Production Engineering,Faculty of Engineering, University of Peradeniya, Sri Lanka (e-mail:firstname.lastname@example.org, Mobile No: +94759405607).
N.K.B.M.P.Nanayakkara was with the Department of Production Engineering, Faculty of Engineering, University of Peradeniya, Sri Lanka(e-mail: email@example.com).
Cite: R. P. Manorathna and N. K. B. M. P. Nanayakkara, "Experimental Investigation of Operating Characteristics of Bio-Diesel on a Conventional Diesel Engine," International Journal of Innovation, Management and Technology vol. 2, no. 3, pp. 199-203, 2011.