CONTROL OF CARBON MONOXIDE EMISSIONS IN SPARK IGNITION ENGINE WITH METHANOL BLENDED GASOLINE AND SPONGE IRON CATALYSTM.V.S.Murali Krishna, K.Kishor and Ch.V.Ramana ReddyAbstract Investigations have been carried out on a variable compression ratio spark ignition engine fitted with catalytic converter run with blend of 10% methanol and 90% gasoline by volume for reducing carbon monoxide (CO) emissions in the exhaust, employing a catalytic converter containing sponge iron catalyst.The influence of parameters such as void ratio, air injection, temperature of air, speed and load of the engine on CO emissions' are studied. A microprocessor based CO analyzer is used for the measurement of CO in the exhaust of the engine.The speed, load and the injection of air into the catalytic converter are found to show strong influence on reduction of CO emissions in the exhaust.An increase of temperature of injected air aided further reduction of CO emissions. Gasoline blended with methanol is found to reduce CO emissions considerably when compared to pure gasoline operation.
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