What causes soot in DPF?
Soot particles form in the engine’s combustion chamber as the result of incomplete combustion. The particles glow and agglomerate in the exhaust system before reaching the DPF, where the particles are captured in the filter and oxidized during the regeneration process.
Can you regen a blocked DPF?
In theory, yes. “Passive Regeneration” or if appropriate Active DPF regeneration will take place as part of a healthy diesel engine running cycle, but active regeneration can fail once a blockage reaches a certain level. Sometimes a “forced” regeneration may be carried out by a mechanic.
How do you clean soot from a DPF?
Purchase a DPF cleaning additive to help clear the ash and soot.
- DPF cleaning additives contain fuel borne catalysts. These experience a combustion process to eliminate the soot and ash.
- Use the cleaning additive every 3 – 6 months to maintain the DPF.
Is there a Regen problem in a Mack truck?
They reprogrammed the truck and did a forced regen. Engine light went off. Did a 100 mile high speed avg 70mph, and checked filter after the drive and it was 50 percent clogged. There were no active or passive regen during the 1 hr drive. MACK is putting the truck in intensive care. Escalating it to the highest level.
What causes a DPF to go bad in a truck?
The newer 09 and up have fewer problems. Engine issues cause most DPF problems, Bad turbo’s, stuck EGR valve, over fueling/cracked injector can flood the DPF with soot or lack of air to burn out the soot. It can be a real pain to figure out. It’s not a every day thing but it does happen.
Why does my truck not do a forced Regen?
if the truck won’t complete a forced regen, then most likely the problem is in front of the dpf can. it could be the fuel dozer but not probable.
How does forced catalytic converter affect DPF levels?
Manufacturers that use a passive form of regeneration typically install a oxidizing catalytic converter near the engine to increase the temperature. Forced is where the Active regeneration could not occur that has resulted in the soot levels reaching 70% and above.