DPF Cleaning Off The Truck?
The purpose of this topic is to discuss the DPF's used on our Light Duty Diesel trucks, and hopefully to educate and prepare owners (myself included) for the eventual replacement or off-vehicle cleani...
Forum Discussion
When DPF was released, DEF was not yet commonly used. To keep nitrogen levels down, engines had to be tuned to run colder which caused more particulate matter. Regens were supposed to take care of built up particulates, but sometimes the generation of particulates was greater than than could be burned off.
With the introduction of DEF, nitrogen can neutralized in the exhaust stream so newer engines can run hotter without adding more nitrogen to the atmosphere. This also allows a more complete burn of fuel which reduces the particulates. Hopefully regens will now be able to keep up with the particulates and we will see longer life spans of DPF units before they have to cleaned or replaced. Because less regens are happening with DEF, we are seeing better fuel mileage even if we will not see longer DPF life.
With the introduction of DEF, nitrogen can neutralized in the exhaust stream so newer engines can run hotter without adding more nitrogen to the atmosphere. This also allows a more complete burn of fuel which reduces the particulates. Hopefully regens will now be able to keep up with the particulates and we will see longer life spans of DPF units before they have to cleaned or replaced. Because less regens are happening with DEF, we are seeing better fuel mileage even if we will not see longer DPF life.
