The working principle of EGR system is to return the exhaust gas to the engine. Quantity of oxygen will be reduced with the intake air blended with the exhaust gas, resulting in a lower combustion temperature. The EGR system on the Nissan Terrano 2 (R20) is designed to control the formation of NOx emission by recirculating the exhaust gas into the intake manifold passage through the EGR control valve. Decrease of nitrogen oxide emission regulations allows eligible exhaust emissions and optimize Read more […]