MBE 900 ENGINE 2007 OPERATOR'S GUIDE AFTERTREATMENT SYSTEM In order to meet current emissions regulations, the traditional muffler has been replaced by a new Aftertreatment Device (ATD).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 filter 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