RAM 3500 HD Truck 4WD L6-6.7L DSL Turbo VIN A (2007)
Diesel Particle Filter (DPF): Description and Operation
Description
DESCRIPTION
DIESEL OXIDATION CATALYST (DOC)
The diesel oxidation catalyst (DOC) is a ceramic flow through substrate coated with a catalyst washcoat that is integral to the DOC/Diesel Particulate
Filter (DPF) assembly. The close coupled DOC treats engine exhaust gases by converting harmful carbon monoxide, unburned hydrocarbons and other
compounds into water, carbon dioxide and heat.
DIESEL PARTICULATE FILTER
The diesel particulate filter (DPF) is a wall-pass ceramic filter substrate coated with a catalyst washcoat that is integral to the DOC/DPF assembly. The
partially treated exhaust gases from the DOC, flow into the catalyzed diesel particulate filter (DPF) which traps and accumulates particulate matter and
further treats the exhaust gases to reduce unburned hydrocarbons and other harmful compounds. the trapped particulate molecules will be periodically
removed from the DPF via a thermal regeneration process initiated by the engine's electronic control module (ECM).
