How does Ford DPF regeneration work?

How Ford DPF Regeneration Works
The diesel particulate filter (DPF) on Ford vehicles requires periodic regeneration to maintain correct operation. The emission control system automatically carries out this process. As soot gathers in the system, it begins to restrict the filter. The soot that gathers inside the filter is cleaned in two different ways, passive regeneration and active regeneration. Both methods occur automatically and require no actions from the driver. During automatic regeneration, the system cleans the diesel particulate filter by oxidizing the soot. Cleaning happens during normal engine operating conditions at varying levels depending on driving conditions.
Unlike an air filter, Ford DPF doesn’t need to be changed. It’s entirely self-cleaning, a process which is controlled by the engine management system and pressure and temperature sensors which detect when the filter must be cleaned. The regeneration process takes place periodically, under normal driving conditions, without the driver noticing that it’s in progress. If the driver ignores the warning light and waits too long to operate the vehicle at a higher speed over a longer distance, the DPF may not regenerate properly. If this continues, it can damage the DPF completely, meaning it will need to be replaced at an authorized garage.
In active regeneration, sensors before and after the DPF measure a buildup of particulates inside the filter matrix which are beginning to restrict exhaust flow. Once a threshold is reached, an active regeneration will commence by injecting diesel directly into the exhaust system. Previous generations would warn that an active regeneration had started, although they would never tell when one was completed. Passive regen is the same as on a Duramax or Cummins. When towing a very heavy load, working the engine hard, exhaust gas temps may reach high enough temps to burn off particulates trapped in the DPF without injecting any additional diesel.
In order to prevent DPFs from clogging, they must pass through regeneration cycles every few minutes to safely burn the particulates and retain the soot until the next regeneration cycle. When the vehicle is generating more soot than normal or the DPF ceramics are in poor condition, the regeneration cycle is shorter.

How often should a 6.7 Powerstroke regen?

Mine will regen about every 300-500 miles. To see the regen percentage screen it must be turned on.

At what speed does DPF regenerate?

40mph
Active regeneration can happen if the car travels at speeds over 40mph for around 10 minutes. On newer diesel vehicles active regeneration can be initiated by the vehicle approximately every 300 miles, by injecting more fuel into the engine so it gets hotter and heats up the DPF.

Can you force a DPF regeneration while driving?

In a first stage, the DPF warning light goes on. In most cases, driving for 10 minutes at 65 km/h (about 40 mph) or faster will ensure proper regeneration.

How does the DPF regeneration work?

When the engine’s exhaust gases are hot enough, they burn off the accumulated soot in the DPF. The driver may notice a warning light on the dashboard indicating that the system is undergoing passive regeneration. During this process, the heated exhaust stream flows into the DPF and oxidizes the soot.

How do I know if my DPF is regenerating?

You will know whether active regeneration is taking place by the following symptoms:

1. Engine note change.
2. Cooling fans running.
3. A slight increase in fuel consumption.
4. Increased idle speed.
5. Deactivation of automatic Stop/Start.
6. A hot, acrid smell from the exhaust.

What triggers DPF regeneration?

DPF regeneration (active)
When the accumulating soot reaches about 45%, the DPF switches to active regeneration. The car forces higher exhaust temperatures, burning the soot in the process.

How does a Ford DPF system work?

In short, the DPF system is a filtration system designed to trap soot and prevent it from exiting the tailpipe and entering the atmosphere from your diesel-powered engine. Low sulfur highway diesel and EGR systems have been integrated into modern diesel engines to help reduce harmful NOx emissions.

How does the Regen work on a 6.7 Powerstroke?

With the electronic monitoring of the 6.7L Powerstroke, the DPF has become very efficient and effective. Regen is the process of burning off the built up diesel particulate matter (DPM) in the diesel particulate filter (DPF). There are three regen strategies for the 6.7L Ford, passive, active, and manual.

How long does it take for a 6.7 Powerstroke to regen?

A regeneration cycle typically takes between 10 and 30 minutes to complete. Trucks that incur many starts and stops on short journeys at low speeds are often unable to meet the requirements necessary for the filter to automatically regen and clean itself.

Can you manually start a DPF regeneration?

There are two main types of DPF regeneration: passive and active; however, DPF regeneration can be performed manually using a scan tool. Passive DPF regeneration occurs naturally during normal driving conditions when the temperature of the exhaust gas is high enough to burn off the particulate matter.