What is an EGR Valve?

[Haley]

An EGR valve, also known as an Exhaust Gas Recirculation valve, is a mechatronic product installed on diesel engines to control the amount of exhaust gas recirculation in the intake system. It is a very important and critical component in the exhaust gas recirculation system. Its function is to regulate the amount of exhaust gas entering the intake manifold, allowing a certain amount of exhaust gas to flow into the intake manifold for recirculation. The EGR valve is typically located on the right side of the intake manifold, near the throttle body, and is connected to both the intake and exhaust manifolds. It controls the degree of valve opening through a vacuum tube, determining the amount of exhaust gas transmitted to the intake manifold. By directing the exhaust gas from engine combustion back into the intake manifold for re-burning, it helps lower the combustion chamber temperature, improve engine efficiency, enhance the combustion environment, reduce engine load, effectively decrease carbon monoxide emissions, minimize knocking, and extend the lifespan of various components.