Experimental Investigation of In Situ Soot Oxidation Using Electromagnetic Waves

Abstract:

This paper presents the experimental results of smoke opacity and exhaust gas measurements due to the oxidation of soot at different microwave power levels to the exhaust gas. The experiment attempts to ascertain the soot oxidation capability of using microwave in reducing smoke from the diesel engine. The exhaust gas from a diesel engine was directed into the microwave generator system which then flows through the chamber assembly that contains the soot trap. Three different microwave power levels of 0.5, 1.0 and 1.5 kW were generated and exposed to the soot at different exposure time. The results showed that when the power level of the electromagnetic waves was increased, the amount of smoke opacity reduced between 32 to 65 % depending on the microwave power levels. Due to the oxidation of the carbon particles of the soot, CO₂ gas increased in corresponding to the decreased in the smoke opacity. The experimental work also found that NOx gas was also reduced due to the breaking down of NOx at the localised high temperature of the soot trap. Hence, the microwave generator system has proven its capability as an in-situ soot oxidation device for deployment in diesel vehicles.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 912-916
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.912
• Online since: April 2015
• Authors: Zainal Ambri Abdul Karim*, Mohamed Haziq bin Haron
• Keywords: Diesel Engine, Emission, Exhaust Gas, Microwave, Soot

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