Ddec V Electronic Control Unit; Egr Valve And Related Components; Ddec V Ecu View - Detroit Diesel Series 60 EGR Technician Manual

DDEC V COMPONENTS

DDEC V Electronic Control Unit

Figure 8-11 illustrates the location of the DDEC V ECU.
1. Fuel Pump 2. Fuel Pump Outlet Line 3. DDEC V ECU
Figure 8-11 DDEC V ECU

EGR Valve and Related Components

The EGR valve position is controlled by DDEC. The ECU continuously monitors all engine
operation modes and performs self diagnostic checks of RPM, load, altitude, air temperature,
etc. and uses this information to determine the valve position.
When the EGR valve is closed, exhaust gas will flow from the exhaust manifold or through the
turbine wheel in the turbocharger, and out the exhaust system.
When the EGR valve is open, some of the exhaust gas is directed into the EGR cooler, through
the delivery pipe, and into the intake manifold.
8-12
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION