New 07 Chevy 2500HD

[Chuck_Lind]

diesel particultate filter. traps almost all the soot from the exhaust. Mandatory on almost all diesel truck egines built after '07.

The dpf looks like a big metal canister in the exhaust system. It acts like a big trap for soot particles. Every so many hundred miles, it goes into a regeneration cycle where diesel fuel is injected into the dpf, then ignited, almost like a small "blast furnace" the soot particles are "burned-off", which cleans the dpf.

I think they stink and make diesel trucks a lot more complex & prone to failure, but it's the best way our world's best & brightest could come up with a way to reduce diesel particulate emissions by 90%.

More light reading here: Diesel particulate filter - Wikipedia, the free encyclopedia

Diesel Particulate Filters - Welcome

Thank you for the information. Almost sounds like a catalytic converter for diesels.