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127 ajit


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127 ajit

  1. 1. EXPERIMENTAL INVESTIGATION ON PERFORMANCE OF DIESEL ENGINE USING PALM OIL BLENDED DIESEL FUEL B.Govinda Rao1, V. Dharma Rao1, B.Ajit1, S.V. Naidu2 and B.Sreenivasulu3 1Mechanical Engineering Department, G.V.P.College of Engineering (A), Visakhapatnam 2Chemical Engineering Department, A.U.College of Engineering,Visakhapatnam 3Chemical Engineering Department, G.V.P.College of Engineering (A), Visakhapatnam
  2. 2. Abstract The performance of variable compression ratio (CR)diesel engine using palm oil blended diesel fuel is investigated experimentally. The performances of High speed diesel (HSD) and blends of 10, 30, 50, 70 and 100% palm oil based biodiesel are tested using variable compression ratio diesel engine.
  3. 3. Introduction The world at present heavily depends upon petroleum fuels for transportation. The rise in price of the major automobile fuels has been one of the major global problems in the recent times. The price rise of fuels is even linked to the global economy. There is rapid depletion of petroleum reserves, high price on oil import, harmful effects of various exhaust emissions on human beings and environment. These are the factors to search for alternative fuels. So, the wide research work is going on throughout the world for bio-diesel fuels as an alternative for automobiles
  4. 4. EXPERIMENTAL SETUP Engine Specification Single cylinder 4 stroke water cooled stroke 110 mm bore 87.5 mm. Diesel mode: Power 3.5 KW , CR range 12:1-18:1 , Speed 1500 rpm , Injection variation 0-250 BTDC. Dynamometer: Type eddy current
  5. 5. RESULTS BRAKE THERMAL EFFICENCY 36 Brake thermal efficiency, % 34 32 30 28 CR = 16 CR = 17 CR = 18 26 24 0 20 40 60 Blend of biodiesel, % 80 100
  7. 7. RESULTS contd… EXHAUST GAS TEMPERATURE 450 520 500 100% L 350 300 70% L 250 50% L 30% L 200 20% L 150 Exhaust gas temperature, 0C Exhaust gas temperature, 0C 400 CR = 16 CR = 17 CR = 18 480 460 440 420 400 380 100 360 0 20 40 60 80 100 Biodiesel, % Fig.7. Variation of exhaustgas temperature with % of biodiesel - Effect of load 0 20 40 Biodiesel, % 60 80 100
  8. 8. Conclusions It is observed that • Brake thermal efficiency (BTE)increases as the percentage of biodiesel is increased, reaches a maximum at 50% biodiesel, and decreases subsequently. • For the blend B50 the improvement in BTE is found to be 26.3, 21.5 and 14.7% at compression ratios of 16, 17 and 18 respectively under full load condition. •The brake specific fuel consumption (BSFC) is the lowest for the blend B70 (30% diesel+ 70% palm oil)and is 10.3% less than that of HSD. • The exhaust gas temperature(EGT) is 11% more than the diesel forB30, i.e., 70% diesel+ 30% palm oil. This purports the fact that palm oil based biodiesel can be blended with HSD to derive economical advantage
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  10. 10. [6] Bari S, Lim TH and Yu CW. (2002) Effects of preheating of crude palm oil (CPO) onInjection system, performance and emission of a diesel engine. Renewable Energy, 27, pp.339–351. [7]CenkSayin and MetinGumus (2011)Impact of compression ratio and injection parameters on the performance and emissions of a DI diesel engine fueled with biodiesel-blended dieselfuel, Applied Thermal Engineering, 31, pp. 3182 – 3188. [8]PritinikaBehera and S. Murugan (2013) Combustion, performance and emission parametersof used transformer oil and its diesel blends in a DI diesel engine, Fuel, 104, pp.147–154. [9]Labecki, A. Cairns, J. Xia, A. Megaritis and H. Zhao, L.C. Ganippa (2012) Combustion and emission of rapeseed oil blends in diesel engine, Applied Energy, 95,pp.139–146. [10]Senthil KM, Ramesh AandNagalingam B. (2003)An experimental comparison ofmethodsto use methanol andjatropha oil in a compression ignition engine, Journal of Biomass and Bioenergy, 25, pp.309–18.