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Performance Analysis of a Diesel Engine Fuelled with Blends of Neem and Simarouba Oils


  • Department of Mechanical Engineering, Amrita School of Engineering, Bengaluru, Amrita Vishwa Vidyapeetham Amrita University, Bangalore - 560 035, India


The high demand of energy and limitations of fossil fuel has increased interest in renewable fuels dramatically in recent years. Biodiesel, biodegradable and non-toxic fuel extracted from any vegetable oil can also be considered as an alternative for the diesel fuel. In the present investigation Simarouba and Neem biodiesel was extracted by the combination of Sodium Hydroxide and methanol, the joint base catalyst by trans-esterification method. The properties like density, viscosity and calorific value are measured for dual biodiesel blends. The obtained values are meeting as per the properties of biodiesel standards. The extracted dual biodiesels was blended with diesel (0-40 %) and were experimented in a 4 stroke single cylinder diesel engine at varying loads. Results shows that the brake thermal efficiency decreases and specific fuel consumption increases with percentage increase in biodiesel blends. Emission characteristics like carbon dioxide, carbon monoxide, oxides of nitrogen and Hydrocarbon with varying blends and varying loads are evaluated and plotted. It was found that the HC and CO emission reduces with percentage increase in biodiesel blends.


Biodiesel, Methanol, Neem Oil, Performance and Emissions, Simarouba oil, Sodium Hydroxide, Trans-esterification.

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