OPTIMIZATION OF DESIGN OF EXHAUST SYSTEM OF AN IC-ENGINE FOR MINIMUM EMMISIONS OF CO & NOX

Exhaust gas travels through Cylinder head and exhaust manifold, a turbocharger to increase engine power, a catalytic converter to reduce air pollution and noise reducer such as muffler. Inside the manifolds the exhaust gases coming out of multiple cylinders are collected and then directed through towards catalytic converters. Catalytic converters are generally fitted in series with the exhaust pipe of almost all vehicles. Inside the Catalytic converter Harmful gases like Co, No etc. are converted into CO2, N2 etc. respectively. They oxidize carbon monoxide (CO) to carbon dioxide (CO2), and reduce nitrogen oxides (NOx) into nitrogen and water vapors. This work is based on combination of experimental and computational investigations to optimize the design of exhaust system from emission point of view. The aim of this work is to optimize design of exhaust manifold in order to improve filtration efficiency of catalytic converter with MC-2 configuration using Cu as a catalyst. Amongst various constituents of exhaust gas, CO and NO are most dangerous pollutants from Global warming point of view. Thus this particular work is concentrated on analyzing filtration efficiency for these two pollutants.