From 5 Aspects to Know About DPF Regeneration and DPF Regeneration Scanner Recommended

Apr 13,2023
Share :

What is DPF regeneration?

DPF (Diesel Particulate Filter regeneration) regeneration is the process used by diesel engines fitted with diesel particulate filters to burn off soot particles that have accumulated in the filter. In order to ensure that DPF can continuously and effectively filter out harmful emissions from diesel engines, this process is necessary.

The methods of DPF regeneration

There are two main methods of DPF regeneration: active regeneration and passive regeneration.

Active regeneration is a more controlled process that is initiated when the engine control unit (ECU) detects that the DPF is clogged. During this process, the ECU injects additional fuel into the engine to raise the exhaust temperature, which heats the DPF and burns off the accumulated soot.

Passive regeneration, on the other hand, is a process that occurs naturally while the engine is running. The DPF is heated to a high enough temperature to burn off the accumulated soot. This process usually occurs during long uninterrupted high-speed highway driving. At this time, the engine runs at high temperatures for a long time.

Make sure the DPF regeneration process is going on properly to avoid damage to the DPF or other parts of the engine. But under certain circumstances, such factors as low fuel levels or short driving cycles, active regeneration may not be possible. In such cases, it may be necessary to manually regenerate the DPF using specialized equipment or by driving the vehicle at high speed for extended periods of time.

How often does DPF regeneration occur?

So, how often does DPF regeneration occur?

We can look at the following 2 situations:

① If the vehicle is in stop-and-go traffic or on a short trip, the DPF may not have the opportunity to regenerate itself and manual regeneration is required to prevent blockage and potential damage to the engine.

② Some vehicles have sensors to detect when the DPF gets too full and trigger regeneration faster. Other vehicles may experience longer intervals between regenerations if the vehicle is primarily driven on the highway or under a light load.

In general, DPF regeneration occurs every 300 to 600 miles (480 to 965 km). But the above two cases tell us that the frequency of regeneration depends on many factors, such as driving style, vehicle load and operating conditions.

How do you trigger DPF regenerations?

DPF is a component in a diesel engine that traps and stores harmful particles from the engine's exhaust. Over time, the filter is built up and clogged by particles. This reduces engine performance and fuel efficiency. So DPF regeneration needs to be triggered to burn off the accumulated soot and regenerate the filter.

There are several ways to trigger DPF regeneration:

① High-speed driving: One of the most common ways to trigger DPF regeneration. Drive on high speed for at least 20-30 minutes. This helps to raise the exhaust temperature, which starts the regeneration process.

② Using the diagnostic tool: The forced regeneration of the DPF can be initiated using the diagnostic tool. This involves connecting the tool to the engine's onboard computer and following the instructions to initiate the regeneration process.

③ Cleaning the DPF manually: If the DPF is heavily clogged, regeneration may not be triggered using the above methods. In this case, a technician is required to manually clean the DPF or replace it if necessary.

In the above three cases, the use of diagnostic tools is a means of forced regeneration DPF. Then, how to force regeneration DPF?

① Connecting the diagnostic tool: Connect the diagnostic tool to the vehicle's on-board computer using the appropriate cable and port.

② Follow the instructions: After connecting, follow the instructions on the diagnostic tool to start the forced regeneration. This process can take up to 30 minutes, during which time the engine should be running at idle or low rpm.

③ Monitoring process: During the regeneration process, monitor the engine temperature, because the temperature in the exhaust system will increase significantly. Additionally, some diagnostic tools may require you to manually initiate a burn cycle or delete any fault codes before the regeneration process begins.

④ Completing the process: After the regeneration process is completed, turn off the engine and disconnect the diagnostic tool. It is important to test drive the vehicle to ensure regeneration is successful and the DPF is functioning properly.

Forced regeneration should only be used as a last resort and only by qualified technicians. If the DPF requires frequently forced regeneration, this could be a sign of a serious problem with the engine or DPF system and should be addressed by a qualified mechanic.

How long does a DPF regeneration take?

Passive DPF regeneration occurs naturally under normal driving conditions and may require hours of continuous driving at highway speeds to complete.

The active DPF regeneration process typically takes 20-30 minutes, during which time the engine must be run at a specific temperature and RPM. The engine control unit will monitor the process and may adjust fuel injection and other parameters as necessary to ensure a successful regeneration.

Temperatures in the exhaust system can reach up to 600°C (1100°F) during regeneration, so it is important to monitor engine temperatures and avoid parking the vehicle near flammable materials. It is also important to note that if the DPF is severely clogged, or if there is a problem with the engine or DPF system, the regeneration process may not be successful and further diagnostics may be required.

Best obd2 scanner DPF regeneration

When choosing the best OBD2 scanner for DPF regeneration, we may need to consider the following factors:

① Function: A scanner that can read and clear DTCs related to the DPF system and can initiate a regeneration cycle.

② Compatibility: Make sure the scanner is compatible with the make and model of the vehicle.

③ User-friendliness: Choose a scanner that is easy to operate and comes with clear instructions.

④ Price: Consider the cost of the scanner and make sure it fits your budget.

SmartSafe iSmartLink D01 is a highly-rated OBD2 scanner for DPF regeneration. It is compatible with most vehicle brands and models and can read and clear DTCs associated with DPF systems. It also has the ability to initiate a regeneration cycle and comes with clear instructions for use. Its advanced features, ease of use, and affordable price make it a popular choice among professionals.

It can be performed in the following situations:

1) Replace the exhaust back pressure sensor.

2) Removed or replace the PM trap.

3) Remove or replace the fuel additive nozzle.

4) Remove or replace the catalytic oxidizer.

5) Turn on and maintain DPF regeneration MIL.

6) The DPF regeneration control module is replaced.


Leaving a message
verify code
< 1 >
Where to buy Become our distributor