Optimization of Non-noble Metal based Catalytic Converter for Two-stroke, Two-wheeler Applications and its Performance Prediction

Two wheelers constitute almost three fourth of the vehicular population in developing countries like India, and consequently they are the major contributors of vehicular pollution. Perovskite based catalytic converter is a good cost-effective option except the limitations with perovskite viz., lower surface area, delayed light-off and lower activity. The present paper describes the development of thermally stable and modified alumina washcoat on metallic substrate, suitable for synthesis of perovskite type catalyst. The metallic substrate based catalytic converters with non-noble metal catalyst have been prepared and tested for mass emission conversion efficiency using 2-stroke, 2-wheeler. The results reveal compliance of Indian Emission Norms 2000. The average pressure drop observed was within tolerable limits. The metallic substrate converter with perovskite type of catalyst, wherein using great possibility of designing pervoskite may be promising for future Indian emission norms for 2-stroke, 2-wheelers. The catalytic performance of the converter with respect to particular engine and driving cycle under consideration has been used for mathematical modeling. The combination of different class of variables has been successfully used in modeling by application of artificial neural network. The algorithm developed predicts the performance very well and will be able to give prior information on performance in view of future emission standards requirement.