Abstract
Due to energy crisis and shortage of fossil fuel, there is a growing interest in alternative fuel for internal combustion engine. Producer gas presents a very promising alternative fuel to diesel since it is a renewable and clean burning fuel having properties similar to that of diesel. In this study, a twin cylinder dual fuel diesel engine is experimentally optimized for maximum diesel saving and lower emissions, without any undue vibration of engine using woody biomass producer gas. The test is carried out to study the performance and emission parameters of the engine in diesel mode and dual fuel mode at different gas flow rates under different load conditions. The study reveals that maximum diesel savings is found to be 83% at optimum gas flow rate and 8 kW load. Carbon monoxide, hydrocarbon and carbon dioxide emissions in dual fuel mode were higher compared with diesel mode at all test ranges. However, the main pollutants, such as nitrogen oxide and smoke, decrease substantially in the dual fuel mode compared with the diesel mode. Lower brake thermal efficiency and higher brake-specific energy consumption as well as exhaust gas temperature are observed in dual fuel mode compared with diesel mode.
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