Exhaust Gas Recirculation System — General Information (Peugeot 605)

The reduction of nitrogen oxide content in engine exhaust gases is achieved by equipping the vehicle with an exhaust gas recirculation (EGR) system.

The system ensures the removal of a portion of the exhaust gases back into the combustion chambers. The volume of exhaust gases returned for re-burning is regulated by a mechanical valve, which in turn is driven by an electromagnetic valve.

The electromagnetic valve is controlled by a microprocessor. This operating principle of the exhaust gas recirculation system is controlled by a microprocessor. This operating principle of the exhaust gas recirculation system ensures stable engine operation

The mechanical valve is closed and EGR is not performed if the engine is not warmed up and the coolant temperature is low. The same thing happens when the engine is idling, driving at low speed or when there is no load on the engine.