What are Exhaust Gas Recirculation (EGR) systems? Exhaust Gas Recirculation (EGR) systems are anti-pollution devices used commonly in diesel engines that reduce the amount of Nitrogen Oxide (NOx) that is emitted through a vehicles exhaust. The engine’s combustion process produces Nitrogen and as the engine’s temperature rises, that Nitrogen chemically combines with the Oxygen in … Continue reading Vehicle Pollution Management Equipment