Regeneration, or regen, of the DPF filter, is the process that burns the soot accumulation that is inside the DPF filter. If you can no longer start a regen then you will eventually get stuck in a derate which will then lead to an engine shut down.
What is the purpose of a regen?
What happens during a regen. To prevent clogging, DPFs clean themselves from time to time by burning off accumulated soot. This process is referred to as regeneration because the DPF is working to “regen” itself to its original state.
What is Regen in a diesel truck?
REGEN stands for Regeneration.
the process by which the soot within a diesel particulate filter (DPF) is converted to ash through the use of heat, chemical reaction and or electricity.
Can a truck regen while driving?
Your truck can undergo the regen process properly while running, and will in fact, usually do so. Your diesel particulate filter, or DPF, undergoes routine passive regen as needed during steady driving. Active regeneration also occurs and happens best during highway driving speeds.
How often should a truck Regen?
Depending on your driving, active regeneration may happen as often as once a day. If you do a lot of stop and go, it can happen even more often. Frequency depends on duty cycle and how much soot collects – as often as once a day or every other day An active regeneration could take up to one-half hour or more.
How long does it take to Regen a truck?
A forced regen occurs when soot builds up inside the diesel particulate filter (DPF) to the point that the vehicle is no longer operable. When this happens, a driver has to pull over and initiate a self-cleaning process that can take up to 40 minutes — valuable time that could have been spent on the road.
Can I turn off my truck during regen?
If you switch your car off while it’s halfway through active regeneration, it may cause problems, and the filter may not have been properly cleaned.
How often does a diesel Regen?
Active regeneration will be initiated every 300 miles or so depending on how you use your car and will take 5 to 10 minutes to complete. But it’s a problem if your journey’s too short and the regeneration doesn’t finish.
How do I know if my truck is regenerating?
You will know the regen is over when the MPG starts climbing back to normal. If you stop, either parked or at a red light or something, the RPM at idle will be around 750 instead of 500 RPM. The truck just “feels” different when regen is in effect. The engine rumble and exhaust sound is deeper.
Does DPF regeneration cause smoke?
In a Diesel engine with a Diesel particulate filter (DPF) system, high-sulfur fuel causes white smoke containing odorous and harmful pollutants during DPF regeneration.
Why does my truck have to regen so often?
The most common reason your truck regenerates is a clogged DPF filter which becomes clogged because of too much soot. When the filter becomes clogged, the ECU will activate regeneration to clean it up. You can also initiate regeneration with an auto tool, or clean it yourself using special additives or cleaners.
How long can a regeneration last?
Just like most other operators that are using our tool for preventative maintenance, this would be the typical experience. Unfortunately, far too often it does not go quite as smoothly. First, as a general rule of thumb, a forced DPF regen should last approximately 45 minutes.
How long does it take to Regen a Freightliner?
It takes about 40-45 minutes of highway speed driving to complete an active regen.
When should I do a parked regen?
Moderate Soot Load: If your DPF indicator light is flashing yellow, driving at highway speed is no longer enough. When this happens, you must pull over and perform a parked regeneration. Pull over safely on a paved or gravel surface.
