Emission reduction techniques in CI engine with catalytic converter

Abstract

The issue of reduction of harmful pollutants emitted from an internal combustion engine has gained large prominence as a part of climate change and global warming. Automobile and power generation systems are identified to be one of the largest contributors to atmospheric pollution. Some of the major pollutants emitted from an engine are Oxides of Nitrogen (NOx), Carbon monoxide (CO), Unburnt Hydrocarbon (UBHC) and soot particles. This paper presents a catalytic converter with emission reduction catalysts to be used for compressed ignition engine. The catalytic converter is developed based on the catalyst materials consisting of metal oxides such as aluminum oxide and titanium dioxide coated with wire mesh filter. Both the catalyst materials – aluminum oxide and titanium dioxide are inexpensive in comparison with conventional catalysts such as palladium or platinum. The objective of this research work is to control the NOx emission and to develop a low-cost three way catalytic converter. This catalytic converter is assembled in the exhaust manifold region of a single cylinder four stroke diesel engine. The emissions from the engine are measured using a five gas analyser and the results are tabulated.