Evaluation of emission characteristics & performance of a biogas-biodiesel dual fuel engine using blends of butanol in different ratios

Abstract

Several researches are being conducted currently worldwide so as to reduce the atmospheric pollution because of the fossil fuels. One of the successful methods is to blend the oxygenated fuels & biogas with the conventional fuel which can reduce the emission of unburnt particles of COx, SOx & NOx because they are the main constituents responsible for major air pollution. One such effort has been made in the current paper where the mixture of pure Diesel, Biodiesel & butanol in different ratios is used as the fuel. For preparing the fuel, 20 % palm oil-based biodiesel is initially mixed with 80 % pure diesel & the mixture is named as BD20. In the next phase, 95 % BD20 is mixed with 5 % butanol and the mixture is termed as B5. Similarly, by adding 10 % butanol in 90 % BD20, 15 % butanol in 85 % BD20 & 20 % butanol in 80 % BD20, B10, B15 & B20 blends have been prepared. Biogas is made to flow inside a single cylinder CI engine (4-stroke) at different flow rates (10, 15 & 20 lpm). BTE, NOX and CO emissions have been examined at different engine loads (10, 20, 30 & 40 N-m). Investigations reveal that B5 & B10 compositions of the blended fuel may be used in place of pure diesel fuel for the application.