DIAGNOSTIC MANUAL
1. Diesel Particulate Filter (DPF)
2. Diesel Oxidation Catalyst (DOC)
6. Diesel Particulate Filter Outlet
Temperature (DPFOT) sensor
Figure 36
DOC and DPF Assembly (MaxxForce® 11, 13 and 15 Engines)
Diesel Oxidation Catalyst (DOC)
The DOC does the following:
•
Oxidizes hydrocarbons and carbon monoxide (CO) in exhaust stream
•
Provides heat for exhaust system warm-up
Diesel Particulate Filter (DPF)
The DPF does the following:
•
Captures and temporarily stores carbon-based particulates in a filter
•
Allows for oxidation (regeneration) of stored particulates once loading gets to a particular level (restriction)
•
Provides the required exhaust back pressure drop for engine performance
•
Stores non-combustible ash
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