MBE 900 ENGINE 2007 OPERATOR'S GUIDE
AFTERTREATMENT SYSTEM
In order to meet current emissions
regulations, the traditional muf
fl
er has
been replaced by a new Aftertreatment
Device (ATD). This device consists of
a Diesel Oxidation Catalyst (DOC) and
a Diesel Particulate Filter (DPF).
Together these two components burn
off collected particulate matter in a
process called “regeneration.” The
key to successful regeneration is high
exhaust temperature for an extended
period of time. Without adequate
temperatures for regeneration, the
fi
lter will continue to trap particulates
and eventually plug. In order to avoid
plugging, Detroit Diesel has designed
an actively regenerated Aftertreatment
System (ATS). See Figure 25.
Figure 25 Aftertreatment System Schematic
All information subject to change without notice.
(Rev. 04/08)
61
DDC-SVC-MAN-0040 0704
Copyright © 2008 DETROIT DIESEL CORPORATION
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