Calculation of the Exhaust Gas Temperature in Diesel Engines Using Biodiesel Blends

Abstract

AIM: This work examines the exhaust gas temperature of a diesel engine fuelled with biodiesel blends. A measure of the heat created by combustion in the form of exhaust gas temperature is known as EGT. MATERIALS AND METHOD: In this work the engine used was a four-cylinder 4 stroke diesel engine which is mounted by the eddy current dynamometer. The blend is obtained by the combination of a biodiesel blend and neat diesel. Diesel engine exhaust gases vary with speed and load. High speed and high load result in a higher temperature in the exhaust gas. RESULTS: The EGT calculated by the blend of cashew nut shell oil and the diesel at 0% load is calculated as the 9.8%, at 20% load is 1.7%, at the load 50% the is 1.3%, at 80% of the load is 1.7% and at the 100% the difference is 6.85%. CONCLUSION: The exhaust gas temperature varies with the engine types, fuels, ignition quality, compression ratio, and other factors. When the engine is at the full of 100% load the exhaust gases rises. Exhaust gases reach temperatures up to 500^o C - 700^o C, while at minimal load (40% - 30% load), the gases are produced at temperatures of 200^oC - 300^o C. The exhaust gas temperature of the cashew nut shell oil was 20% more than the neat diesel exhaust gas temperature.