Abstract
In this current research work, efforts are spent to evaluate a novel Indian Blackberry biodiesel competency and suitability for a direct ignition single-cylinder four-stroke CI engine. Transesterified biodiesel characterisation is carried out as per ASTM standards. It is found that biodiesel properties are within ASTM standard limits. From the test results of Indian Blackberry biodiesel blends (IBME10, IBME20 and IBME 30) at standard operating conditions, IBME 20 showed improved performance with lower exhaust emissions. Further, the additions of Dibutyl ether (DBE) to the IBME20 blend also inferred enhanced engine characteristics. The use of 10% DBE in the IBME20 blend has shown 5.7% increment in BTE and a drastic reduction of engine tailpipe emissions like HC by 20.77%, CO by 19.38%, NOx by 8.59% and smoke by 16.41% when compared to the IBME20 blend. Also, the usage of DBE in the IBME20 blend shows improved combustion characteristics throughout the engine operation.
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