Performance and Heat Release Rate Comparison in a Diesel Engine fueled with Sunflower Methyl Esters/Diesel Fuel Blend

Biodiesel fuels are among the leading renewable alternative fuels. And, using biodiesel fuels is available and easy to implement on diesel engines. Biodiesel fuels, methyl/ethyl esters of various oils extracted from vegetables or animals, are being used by many researchers on various types of engines and they were tested at various conditions. Since chemical properties very close to diesel fuel, similar test results for nominal engine performance data with diesel can be obtained by using biodiesel fuels on engines. In this study, effect of sunflower oil methyl esters on engine performance, heat release rate and indicated engine parameters are investigated experimentally on a single cylinder, DI Diesel engine. Tests are performed with diesel fuel and B50 blend fuel, consisting of 50% diesel and 50% biodiesel fuels, at full load condition and at different speeds. Engine brake torque, brake power, brake specific fuel consumption, brake thermal efficiency, heat release rate, and indicated engine parameters are calculated from the test data, and the results obtained by using diesel fuel and B50 blend fuel are compared. Although some worsening on performance data and heat release rate on B50 side, results are very close to each other.

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