EPA07 Aftertreatment Device

EPA07 Aftertreatment Device - Ops

In order to meet EPA07 emissions regulations, the traditional muffler was replaced by a new Aftertreatment Device (ATD). The EPA07 ATD 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 particulate and eventually plug. In order to avoid plugging, Detroit™ has designed an actively-regenerated ATD.

  1. Doser Block Assembly
  2. Intake Throttle Valve
  3. Charge Air Cooler
  4. EGR Valve
  5. EGR Actuator
  6. Fuel Doser Valve
  7. DOC Inlet Temperature Sensor
  8. DOC Outlet Temperature Sensor
  9. Sensor Junction Box
  10. DPF Outlet Temperature Sensor
  11. DPF Outlet Pressure Sensor
  12. Diesel Particulate Filter
  13. DPF Inlet Pressure Sensor
  14. Diesel Oxidation Catalyst

Fig. 1, EPA07 Aftertreatment Device

Note:
Parent topic: Aftertreatment System
Document Number: 0000022339
Manual Publication Date: 2024-03-05
Topic Publication Date: 2023-12-10