Exhaust Gas RECIRCULATION: Description

Exhaust gas recirculation allows a predetermined amount of hot exhaust gas to recirculate and dilute incoming air/fuel mixture. This diluting of the mixture reduces high heat peaks during combustion, thereby reducing NOx emissions.

Fig 1: Exhaust Gas Recirculation Venturi Vacuum Control and Coolant Temperature Switch (CTS)

Courtesy of CHRYSLER GROUP, LLC