Optimization of Engine Performance through different piston shapes by Taguchi Method

Abstract

The world’s energy demand has increased drastically in the past and is likely to increase even more in the upcoming years. The fossil fuels are non-renewable energy, depleted at fast rate and this fact intensifies the need to look for alternative fuels to meet our day to day energy needs in all power sectors. The consumption rate of energy has increased tremendously and it necessitates increased supply of energy in all forms. The conventional energy resources like diesel, petroleum, gas and coal will soon be depleted. Hence there is a dire requirement to generate alternative sources of the fuel. Biodiesel is one of the best alternative and renewable fuel. It is oxygenate, Sulphur free and biodegradable. Oxygen content in biodiesel helps to improve the efficiency of the engine. Combustion chamber in compression ignition engine is one of the most important roles to enhance the fuel – air mixing rate (swirl) in short possible time. The turbulence is guided by the shape of the combustion chamber. The air swirl is created in combustion chamber, when the fuel air mixing rate increases. Hence the time duration of air fuel mixing rate decreases. The overall duration of the combustion process to shorten as swirl has leads to increases mechanical efficiency. In this work, in which biodiesel is prepared by transesterification process and engine performance is optimized by different parameters such as Piston shape, Load and Blend ratio and analyzed by Analysis of Variance.