DPF Regeneration

DPF Regeneration

DPF System Driver Information

Manual Regeneration

Need for Manual Regeneration:- During normal driving, the filter is automatically regenerated every several hundred kilometers. However if vehicle is continuously being operated in below mentioned conditions, Automatic regeneration cannot be performed.

For the above conditions,

PM continues to accumulate and manual regeneration is required to ensure normal operation of DPF.

I.When regenerating the filter during driving the vehicle

To regenerate the filter, the following driving methods are recommended

1. By driving continuously (for example, at around 60 km/h. for 20 to 30 minutes. By avoiding short trips, or by driving continuously (leaving the engine running for long periods of time). Check the engine is warmed up before driving the vehicle to regenerate the filter. If the engine is cold, warm up the engine by driving the vehicle downshifting to increase the engine speed.

2. The warning message will disappear on the multi-information display when regeneration is complete. However, depending on the driving condition such as heavy traffic, the amount of accumulated deposit increases and the warning message may not disappear on the multi-information display

If the warning message does not disappear on the multi-information display after driving, press the DPF system switch to manually regenerate the filter.

*1: Depending on the situation, it may be necessary to depress the accelerator pedal until the engine speed is increased to 3000 rpm. If the engine coolant temperature or exhaust gas temperature is low, it may take a long time to regenerate, or regeneration may be impossible

*2: Time required for regeneration differs in accordance with the outside temperature. Also, if the engine speed is still approximately 2000 rpm and 10 minutes after pressing the DPF system switch, the exhaust gas temperature may be low. In this case, depress the accelerator pedal to run the engine at approximately 3000 rpm for a while. While depressing the accelerator pedal, regeneration might stop, in that case restart the regeneration.

Regeneration with the DPF system switch

After pressing the DPF system switch, depressing the accelerator pedal or clutch pedal (manual transmission) will stop regeneration. If regeneration has been stopped, restart regeneration as soon as possible After regeneration is finished, race the engine several time to clean the exhaust system.

DPF System

Customer Frequently Asked Questions

1. What is BS 6?

The Bharat Stage 6(BS 6) is the vehicle emission standards adopted by India in 2020. It’s a stricter and more restrictive standards that will help to further reduce air pollution.

2. What is DPF?

DPF is Diesel Particulate Filter. The purpose of DPF is to filter the particulate matter in the exhaust system.

3. What is DPF regeneration?

Regeneration is a process of cleaning the particulate matter accumulated in the DPF.

4. How does the regeneration happen?

Regeneration happens in two ways

A.Automatic Regeneration - Based on the accumulation of PM in DPF, regeneration occurs automatically without any manual intervention.

B. Manual Regeneration - Manual intervention like pressing the DPF Switch, or operating the vehicle at certain conditions will be required for regeneration to occur.

5. How frequently customer has to do manual regeneration?

Customer has to do manual regeneration only when it prompts in multi information display.

6. When manual regeneration is carried out what happens if customer unknowingly turns off the engine or Ignition switch?

Process gets aborted & during the next ignition ON cycle regeneration may re-start (Re-start or not depends on the PM accumulation ratio)

7. In normal driving condition or in idling, if customer presses DPF switch will RPM increase?

Nothing happens (Because DPF switch is activated only when manual regeneration requirement shown in MID).However during regeneration, RPM might increase.

8. Does regeneration work in high altitude areas.

Regeneration does not work in areas which are above 4000 meters altitude.

9. What happens if manual regeneration is not performed or ignored?

If manual regeneration prompt is ignored, it may lead to DPF clogging and eventual failure.

10. Will DPF Cause Fire?

If the regeneration is carried out taking precautions as per the general warnings, it will not lead to any fire. However care must be taken to perform regeneration in a safe location.

11. What will happen if I don’t do anything about the DPF warning light/notifications not going out?

The warning light/ notifications are there to either notify you to normal operation of DPF, or to warn you the vehicle is not able to complete automatic regeneration. If you continue driving, damage may be caused to the vehicle or an accident may occur.

12. What if auto regeneration process has been unsuccessful?

The soot will continue to accumulate in the DPF and driver will be prompted to perform manual regeneration. Ignoring the prompt will result in clogging of the DPF filter and eventual failure.

13. Do I need to replace the diesel particulate filter during normal servicing?

Similar to air and oil filter, even the DPF gets clogged. However the accumulated soot will be automatically removed once it reaches a pre- determined level within the exhaust system during driving. Hence no periodic replacement of DPF filter is required, unlike other filters.