STUDIES ON CONTROL OF CARBON MONOXIDE EMISSION IN SPARK IGNITION ENGINE USING CATALYTIC CONVERTERM.V.S. Murali Krishna', C.M. Vara Prasad2 and Ch. Venkata Ramana ReddyAbstract The present investigations are carried out on control of carbonmonoxide (CO) content in the exhaust of variable compression ratio spark ignition (SI) engine using catalytic converter. Sponge iron and manganese ore are used as catalysts in the converter. The influence of the parameters/conditions such as void ratio, air-fuel ratio, injection of air, temperature of air, mass of catalyst, speed and load of the engine on control of CO emission are studied. The air-fuel ratio, speed and load of the engine have shown greater influence in the emission of CO where as, the void ratio, mass of the catalyst, temperature of injected air has shown significant influence on control of CO in the exhaust. Catalytically, sponge iron is found to be more efficient than manganese ore.
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