COMPONENTS
EGR (exhaust gas recirculation) allows a percentage of the exhaust gases to remix with the air
coming into the intake manifold. The exhaust gas dilutes the incoming air, displacing some of the
oxygen in the air. Less oxygen results in a slower burn and a reduced peak cylinder temperature
which reduces NOx (nitrogen oxides).
Figure 2-1 illustrates how components of the EGR system function.
See Figure 2-2 and Figure 2-3 to familiarize yourself with the EGR components.
1. VNT Turbocharger
6. S Pipe
2. Turbo Vane Actuator
7. EGR Valve
3. EGR Valve Actuator
8. EGR Cooler
4. Delta Pressure Sensor
9. High Flow Water Pump
5. EGR Gas Delivery Pipe
Figure 2-2
Right Side View
2-2
All information subject to change without notice.
(Rev. April 2004)
7SE60 0404
Copyright © 2004 DETROIT DIESEL CORPORATION