ENGINE 62 1.6 ENGINE SYSTEMS : A. Air Intake System : Air Intake System Schematic Layout : Description : Atmospheric air is drawn into the combustion chamber through the air intake system as shown in above schematic layout. The air intake system should have the ability to supply sufficient quantity of air to the engine. The air is driven to the intake manifold primarily due to the suction created by the engine. The fresh air from the outside atmosphere is made to pass through an air filter and into the turbocharger. Here the air is compressed by the turbocharger which is driven by exhaust gasses. It then passes through the intercooler where temperature of the compressed air is reduced and then into the combustion chamber through intake manifold. EGR cooler module with EGR and bypass valve (For Exhaust Gas Recirculation) is used to reduce the NOx emission levels. This assembly comprises of EGR valve, EGR cooler and bypass valve. A part of the exhaust gas is tapped from the exhaust manifold and made to mix with the air coming from the intercooler before entering the intake manifold. For more details on EGR cooler with bypass valve, refer Exhaust System.
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