What is the function of the egr valve?

Answer by  uncstuff (83)

Its purpose is to take unburned gasses in the exhaust and recirculate the back into the throttle body to be reburned for cleaner emissions.

Answer by  tkarlav (1502)

The funtion of an EGR valve is to recirculate spent exhaust gasses thru the system in order to reduce emissions and heat.

Answer by  bug57 (1048)

The Exhaust Gas Recirculation (EGR) valve is an essential component of the vehicle emissions system. It allows spent (burnt) exhaust gases to "re-injected" into the engine intake air stream, in order to burn them twice to remove hydrocarbons.

Answer by  Amber40 (24961)

The purpose of the EGR valve is to allow exhaust to re-enter the engine so it can be burned again. This is mainly for emission reasons.