Comparison of metallic (FeCrAl) and Ceramic Catalytic Converter (CATCO) in reducing exhaust gas emission of gasoline engine fuelled by RON 95 to develop health environment

Abstract

Environmental and human health problemscaused by high air pollutant which contributed by transportation sector become main issue in the world. There are someair pollutants from gasoline engine such as Carbon Monoxide (CO), Nitrogen Oxide (NOx) and Hydro-Carbon (HC). Therefore, the objective is to investigate the effectiveness of catalytic converter (CATCO) as pollutant converter in reducing harmful exhaust gas and improving the conversion efficiency. The exhaust emission analysis is conducted by gasoline engine model Mitsubishi4G93 in various engine load of 10%, 20% and 30% and various speed of 1000, 2000 and 3000 rpm fuelled by RON 95. The result shows that the ceramic material more effective to reduce the CO and HC as compared to metallic material with maximum conversion is 99.02% at speed of 1000 rpm in engine load of 20% and 97.66% at speed of 1000 rpm and 10%engine load. Meanwhile, Metallic CATCO shows the lower NOx emission as compared to ceramic with the lowest NOx is 128.27 ppm which shown by speed of 1000 rpm and 10%engine load. The lowest emission mostly at speed of 1000 rpm and at lower engine load. It caused by engine load and speed increased as CO, NOx and HC increased as well.