Theoretical prediction and Experimental validation of the Performance and emission Characteristics of CI Engine using Vegetable oil esters

Abstract

newlineThe main aim of this work is to develop versatile software to newlinepredict various combustion parameters performance parameters and newlineemissions levels of any biodiesel with minimum inputs such as density newlinecalorific value chemical formula specific heat kinematic viscosity to the newlineprogram Hence a computer simulation of a diesel engine is carried out by newlineusing three different biodiesel such as Jatropha Mahua and Neem Thus a newlinetheoretical model was developed to evaluate the combustion characteristics newlineperformance parameters and emissions of vegetable oil esters like Jatropha newlineMahua and Neem oil esters The predicted results of these fuels are compared newlinewith experimental result and also compared with that of diesel fuel for the newlinevalidity of the theoretical model The combustion characteristics and newlineperformance parameters are predicted for various engine conditions such as newlineinjection timing equivalence ratio spray cone angle injection pressure and newlineload conditions From the predicted results it is found that the heat release newlineand work done are reduced by about 4 for Jatropha 6 for Mahua and 8 newlinefor Neem oil esters when compared to diesel The peak pressure for vegetable newlineoil esters are reduced by about 3 4 and 5 respectively for Jatropha newlineMahua and Neem oil esters at an optimum engine condition when compared newlineto diesel The brake thermal efficiency is reduced by about 1 for Jatropha newline2 for Mahua and 3 for Neem oil ester when compared to diesel newline newline