Emission Control Systems

Oxidation Catalyst (2-Way Catalyst) Due to the nature of a diesel engines physical workings, an oxidation catalyst is fitted as a conventional 3-way petrol catalyst does not function the same way. As a diesel engine expels large amounts of oxygen through the exhaust, we have high levels of Carbon Monoxide to convert in the presence of this Oxygen. The Oxygen itself impedes the conversion of NOx into Nitrogen and Oxygen. Hydrocarbons, Carbon Monoxide and Sulphates must be oxidised in order to turn them into Water and Carbon Dioxide.