Conventional fuel IC engines are facing problems of ever-increasing fuel prices and depleting fuel reserves. Pollutant emissions from conventional fuel IC engines make the problem worse. Many research studies show that blending biodiesel with conventional diesel engines improves engine performance and reduces pollutant emissions. Up to a certain limit, a conventional CI engine may operate with blended fuel without any engine modification. Biodiesel can be made from biomass and is easily renewable. A blending of biodiesel with conventional diesel can significantly reduce the price of diesel fuel. Present research work investigates the effects of hydrogen induction and Neem oil biodiesel blending on the performance of 4 Cylinder 4 Stroke Indirect Injection CI Engine. Blended fuel B20 is the combination of 20% of Biodiesel, made from Neem oil, and diesel on a volumetric basis. Experiments are carried out using diesel, blended fuel and hydrogen induction at the rate of 4 and 8 LPM at the engine speed of 1500 RPM. Engine performance and emission parameters viz. brake thermal efficiency (BTE), brake specific energy consumption (BSEC), exhaust gas temperature (EGT), carbon monoxide (CO), and oxides of nitrogen (NOx) are measured to evaluate the effects of hydrogen induction and biodiesel blending on the engine performance and pollutant emissions. The results show that the fuel blend B20 and hydrogen induction has 7-14% lower brake-specific energy consumption compared to diesel. Emission of CO is reduced by 8-52% compared to diesel. Biodiesel blending to the diesel reduces NOx emissions by 3-8%. However, induction of hydrogen to blended fuel results in higher NOx emissions by 1-9% related to diesel fuel.

Topics
Energy consumption, Diesel fuel, Biofuels, Biomass energy sources, Thermal efficiency, Air pollution, Exhaust gas temperature, Combustion engine, Chemical elements, Carbon monoxide
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