Dual Biodiesel for Diesel Engine Property, Performance and Emission Analysis

Abstract

Numerous works on the consumption of biodiesel and its blends in diesel engines have been performed. This paper enlightens the physical–chemical properties, performance and emission analysis of the mixed fuels of pongamia pinnata biodiesel, jatropha biodiesel and diesel fuel blends. Physical and chemical properties of diesel fuel, pongamia pinnata biodiesel, jatropha biodiesel and the combination of diesel-pongamia pinnata – jatropha (DPJ) blends are determined according to requirements and test methods. The key fuel properties such as calorific value, kinematic viscosity, specific gravity, volatility characteristics, cetane number, surface tension and corrosiveness of the blends were measured using the International Standard methods. The results indicate that the calorific value of the blends decrease with an increase in concentration of dual biodiesel in the blends. The kinematic viscosity, specific gravity, surface tension, cetane number, flash and fire point temperatures of the dual biodiesel blends are augmented with an increase in concentration of dual biodiesel in the blends. The viscosity of dual blends decreases with an increase in temperature and also nears the viscosity of diesel at higher temperatures. The specific fuel consumption values of dual biodiesel blends were comparable to diesel. The dual biodiesel blends provided  less HC and CO than diesel.