%0 Journal Article
%T NOX EMISSION CONTROL TECHNIQUES WHEN CI ENGINE IS FUELLED WITH BLENDS OF MAHUA METHYLE ESTERS AND DIESEL
%A M.V.Mallikarjun
%A Venkata Ramesh Mamilla
%A G. Lakshmi Narayana Rao
%J International Journal of Engineering Sciences and Emerging Technologies
%D 2013
%I IAET
%X Producing and using renewable fuels for transportation is one approach for a sustainable energy future worldwide. Renewable fuels also substantially reduce contributions to global climate change. In the transportation sector, ethanol produced from biomass shows promise as a future fuel for spark-ignited engines because of its high octane quality. Ethanol, however, is not a high quality compression ignition fuel. Ethanol can be easily converted through a dehydration process to produce Diethyl Ether (DEE), which is an excellent compression-ignition fuel with higher energy density than ethanol. DEE has long been known as a cold start aid for engines, but little is known about using DEE as a significant component in a blend or as a complete replacement for diesel fuel.This paper attempts to identify the potential of blending DEE with diesel transportation fuel. Engine tests were conducted with 5% 10%, 15% and 20% DEE/Diesel blends. The nitrogen oxide (NOX) emissions are high and it is necessary to reduce this emission before using methyl ester as a fuel for diesel engines. In the present work, retardation of injection timing and exhaust gas recirculation (EGR) are used to reduce the same. However UBHC, CO and particulate emissions increase when retarding the injection timing. But these pollutants are low compared to normal diesel operation. Injection timing of 20.90CA bTDC is found to give optimum results. The adopted concept of exhaust gas recirculation showed considerable reduction in nitrous oxides and slight improvement in bTE for 10% of EGR when the engine is operated at an optimal blend. Further diethyl ether is used as an additive and engine emissions particularly NOx found to be at reasonable level for 10% of DEE addition by not compromising in thermal efficiency and specific fuel consumption.
%K CI Engine
%K NOx
%K DEE
%K Mahua Methyl Esters
%U http://www.ijeset.com/media/0001/12N8-IJESET0402832.pdf