Diesel Aftertreatment Knowledge Base
Technical guides on diesel particulate filter (DPF) systems, DPF regeneration, selective catalytic reduction (SCR) and common SCR system faults.
What is a DPF System?
How a diesel particulate filter system works, components and warning signs.
Diesel DPF Regeneration Explained
Passive, active and forced DPF regen — and why regen fails.
How Selective Catalytic Reduction Works
SCR chemistry, DEF/AdBlue and the role of the SCR catalyst.
Common SCR System Faults
NOx sensor, doser, pump and catalyst issues and how to diagnose them.