Valve

EGR And Air Control Valve:

The EGR system consists of:
- EGR valve
- Air Control Valve
- EGR cooler

The EGR valve and cooler are located under the intake manifold toward the left rear of the engine. The air control valve is located in the charge air inlet before the intake manifold.

The EGR system reduces oxides of nitrogen (NOx) in engine exhaust. Formation of NOx increases proportionally with combustion temperature. To reduce the emission of these oxides, the cylinder temperature must be lowered. The system allows a predetermined amount of hot exhaust gas to recirculate and dilute the incoming charge air. The diluted air mixture reduces peak flame temperature during combustion. The EGR cooler further reduces these temperatures.