Venturi Tube/Delivery Pipe - Detroit Diesel Series 60 EGR Technician Manual

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 flow 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 flow 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
2-17
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION