When to shut off diesel particulate filter regeneration?
When to shut off diesel particulate filter regeneration?
On most vehicles, there is a way to shut off the regeneration process if you are in a situation where raising the exhaust system’s temperature could cause a fire. But, don’t leave it off or permanent damage can be caused to the DPF.
What does DPF do to a diesel particulate filter?
The Diesel Particulate Filter traps the harmful diesel gases that gets cleaned regularly by a process called DPF regeneration. The collected diesel soot particles are burnt off at high temperatures, which results in an “ ash-like ” after product.
How does the Regen cycle in a DPF filter work?
“A regeneration cycle occurs by essentially ‘cooking’ the filter clean again,” says Kyle Nace of Response Equipment Specialists (Kalispell, MT). “The DPF Regen contains the heat of the exhaust, adding up to temperatures exceeding 1000 degrees Fahrenheit, so that the filter is depleted of its buildup and returns to proper functioning capabilities.”
How does the particulate filter clean the exhaust?
At the same time, the filter is slowly clogging with the very particulates that it’s designed to remove from the exhaust. This process of cleaning the DPF is done through a process called regeneration. There are several different methods used by various manufacturers to clean the DPF.
How does a diesel particulate filter regeneration work?
The active regeneration is self-activated by the PCM based on various inputs. The PCM sends a command to raise the exhaust temperatures by adding a small amount of injected raw fuel upstream of the DPF. The chemical reaction of the precious metals in the DPF and the raised exhaust gas temperatures oxidizes the PM from the filter.
When do I need to clean my diesel particulate filter?
Diesel cars and trucks manufactured after 2009 must have a DPF. The drawback to all of this is that the DPF needs to be cleaned regularly. The soot particles attach themselves to the lining of the DPF while the engine is running.
How often should DPF regenerations take place in diesel engines?
There is only one answer to excessive DPF Regeneration: Eliminate or dramatically reduce diesel particulate matter (soot). If you can achieve near perfect combustion efficiency, exhaust soot drops to the point where DPF regenerations or “regens” would be extremely rare.
Why is my diesel particulate filter clogged?
If the EGR system is failing, with improper recirculation of the exhaust, the truck runs with a lot more particulate and a lot more soot, therefore also clogging the DPF even more. “The entire system relies on the engine running well and doing everything possible to avoid repair or replacement of the DPF,” says Kyle.
