Detroit Diesel Series 60 EGR Technician Manual page 39

The VNT vane position is adjusted by the VNT actuator air pressure which is regulated by the
VPOD. The VPOD determines the correct air pressure via voltage signal from the DDEC V ECM.
Air pressure supplied by the EGR VPOD to the EGR actuator opens the butterfly valve.
See Figure 3-2.
Once the EGR butterfly valve opens, the EGR gases flow through the EGR cooler and into the
delivery pipe.
Red = Exhaust Gas
Orange= Cooled Exhaust Gas
Figure 3-2 EGR Mode
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION
SERIES 60 EGR TECHNICIAN'S MANUAL
Yellow= Vehicle Air (VPODs)
Green= Coolant Flow
3-3