ISSN (0970-2083)

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Research Article Open Access

OPTIMIZATION OF MAHUA BIOFUEL BLEND AND EGR (EXHAUST GAS RECIRCULATION) FOR CONTROL OF NOX EMISSIONS IN DIESEL ENGINES

Abstract

Depleting fossil-fuel reserves all over the world and the environmentalimpact caused by them such as pollution and global warming are the driving factors which leads to the search for alternative fuel. Vegetable oils either as raw oil or in the form of methyl or ethyl esters are experimented as a substitute to diesel. This involves little or no engine modification.In this work, performance and emission characteristics of Mahua oil and its blends B10, B20, B30 areevaluated in a directinjection single-cylinder constant-speed diesel engine at varying injection pressures. It is seen that 20%Mahua oilblendand 200 bar injection pressuregives almost the same brake thermal efficiency with lowerunburned hydrocarbons, carbon monoxide and soot emissions but higher NOx (nitrogen oxides) emissionscompared to diesel fuel. EGR (Exhaust Gas Recirculation) is used to control NOx emissions. Percentageof EGR is varied to determine optimum EGR for 20% Mahua oil blend. The different rates of EGR are evaluated based on Hydrocarbons, NOx and CO emissions.

PRAVEENA V, SHIVAM RAJ AND RONITH

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