* Recirculating exhaust gases: The EGR valve allows a small amount of exhaust gas to be recirculated back into the engine's intake manifold.
* Lowering combustion temperatures: By mixing cooler exhaust gases with the fresh air-fuel mixture, the combustion temperature in the cylinders is reduced.
* Reducing NOx formation: Lower combustion temperatures significantly decrease the formation of NOx, a major component of smog.
In short, the EGR valve is a crucial component in the Malibu's emissions control system, helping it meet environmental regulations. A malfunctioning EGR valve can lead to increased NOx emissions and potentially damage the engine over time.
