SERIES 60 EGR TECHNICIAN'S MANUAL
Venturi Tube/Delivery Pipe
A Venturi tube with a port at each end is attached to the EGR delivery pipe at the EGR cooler
outlet. The ports are connected to the Delta P Sensor to monitor the pressure differential across
the venturi as EGR gases
fl
ow through EGR delivery pipe to the charge-air mixer. See Figure
2-17 to view pre-2004 delivery pipe and see Figure 2-18 to view enhanced delivery pipe. The
ECM uses this information along with temperature and density of exhaust gases to determine
precise EGR mass
fl
ow rate. See Figure 2-19 for pre-2004 venturi tube and see Figure 2-20
for enhanced venturi tube.
Figure 2-17
Pre-2004 Delivery Pipe
All information subject to change without notice.
(Rev. June 2005)
2-17
7SE60 0506
Copyright © 2005 DETROIT DIESEL CORPORATION