Performance and Exhaust Emissions of a Diesel Engine Using Pyrolysis Oil from Waste Frying Oil and Castor Oil Mixture

Abstract

Due to scarcity of crude oil price and increase in the environmental pollution there is a necessity to search for alternative fuels for internal combustion engines. In this investigation a 1:1 ratio mixture of waste frying oil and castor oil was used as a raw material in pyrolysis process. The pyrolysis oil obtained was then blended with diesel fuel at different ratios and the different blends were used as fuels in a diesel engine. The performance and emission characteristics of a twin cylinder, four-stroke, water cooled, direct injection diesel engine, were studied. The different fuels of pyrolysis oil-diesel blends were namely P10 (10% pyrolysis oil blended with 90% diesel), P30 (30% pyrolysis oil blended with 70% diesel) and P50 (50% pyrolysis oil blended with 50% diesel). The results obtained from the study were analysed and compared with diesel fuel values and are presented in this paper.