M.V.S. Murali Krishna, K. Kishor, A.V.S.S.K.S. Gupta, S. Narasimha Kumar and D.N. Reddy
Abstract
Investigations are carried out on a variable compression ratio, spark ignition engine run with gasohol ((20% ethanol and 80% gasoline by volume) for reducing carbon monoxide (CO) emissions in the exhaust with catalytic converter employing manganese ore as catalyst. The influence of parameters like void ratio, air injection, speed, load and temperature of air are studied. A microprocessor based CO analyzer is used for measurement of CO in the exhaust of the engine. The speed, the load and the temperature of air are observed to have strong influence on reduction of CO in the exhaust. Air injection and increase of temperature of air aided further reduction of CO.Gasohol decreased CO emissions considerably when compared to gasoline operation.