Effect of Pore Density and Length of Metal Oxide Coated Ceramic Foam Substrate on Engine Performance And Emission Conversion Efficiency

Abstract

This research experimentally investigated the effect of geometric parameters such as pore density and length of a ceramic foam filter on the engine BTE and foam emission conversion efficiency in a diesel engine. Ceramic foam pore density of 20 PPI and 30 PPI and foam substrate length of 110 mm (standard), 130 mm, and 150 mm were taken for the study. The results obtained from the above study were alsocompared with that of honeycomb structure catalyst substrate (3-way CC)which belongs to OEM.From the results, it is found that ceramic foam filters performed better interms of conversion efficiency irrespective of foam pore density and length when compared to OEM CC. Also, the results show that,with an increase in pore density and length of the ceramic foam substrate, the CO, HC, and NOx conversion efficiency increased significantly due to enhancement in the catalytic activity whereas engine BTE decreased due to an increase in the pressure drop across the foam filter.