With this function it is possible to burn soot particles in the particulate filter via the engine control unit (ECM)
Important! Burning of soot particles (regeneration) shall be run outdoors. If that is not possible, the particulate filter shall be replaced.
The burn phase may take up to 1 hour and consists of four phases:
1. Start-up phase, a start command has come from the user.
2. Warm-up phase, all start conditions are fulfilled and engine speed is increased to approx. 2000 rpm.
3. Burn phase, temperature in the particulate filter increases to 600 °C. The burn phase lasts for approx. half an hour.
4. Cooling phase, to avoid overheating the engine speed will be at approx. 1200 rpm until the temperature in the particulate filter has dropped below 300 °C and the temperature in the catalytic converter has dropped below 230 °C.
Note:
Check the inlet system for leaks and damage.
Check the injectors.
Check the soot amount in the particulate filter:
At 19 g of soot in the particulate filter, during highway driving the engine control unit (ECM) starts burning of soot particles in the particulate filter.
At 24 g of soot in the particulate filter, during normal driving the engine control unit (ECM) starts burning of soot particles in the particulate filter.
At 30 g of soot in the particulate filter, a text message is sent to the combination instrument (DIM).
At 38 g of soot in the particulate filter, the engine control unit (ECM) cannot start burning of soot particles in the particulate filter.
At 100 g of soot in the particulate filter, this service function cannot start burning of soot particles in the particulate filter.
Tip: The differential pressure in the particulate filter can also be used as an indicator of soot amount. Normal value at idle is between approx. 3 hPa and 20 hPa. Burning of soot particles can only be performed if the differential pressure in the particulate filter does not exceed 100 hPa at idle. If the differential pressure is higher than 100 hPa the particulate filter shall be replaced.
Test conditions:
Engine on for at least 5 minutes.
Coolant temperature at least 45 °C.
Engine oil temperature at least 30 °C.
Fuel temperature max. 80 °C.
No pedal may be activated.
Engine speed between 600 and 2200 rpm.
No error codes for temperature sensor particulate filter or temperature sensor catalytic converter.
No error codes for coolant temperature.
Procedure:
Check that the start conditions (test conditions) are fulfilled.
Select function: "Burning of soot particles".
A dialogue box shows: "Soot amount in particulate filter" and "Pressure particulate filter".
If the soot amount is 100 or the pressure in the particulate filter is above 100 hPa, press "Cancel" and replace particulate filter. Otherwise press "OK" to continue.
A dialogue box shows: "Start burning", burning of soot particles may take up to 1 hour. Press "OK" to start the function or "Cancel" to abort. Warning! Temperature of the exhausts may increase to approx. 600 °C. Make sure that exhaust extraction and associated equipment tolerate the high temperature.
A dialogue box shows: Regeneration process activated, engine rpm increasing. If burning has to be aborted, select "Cancel".
The regeneration process may take up to 1 hour, when the engine rpm returns to normal idle the function is done.
Press "OK". A dialogue box shows "Soot amount in particulate filter and pressure in particulate filter after regeneration". Press "OK" to finish.
If the burn fails or is cancelled, check test conditions, the particle filter may need to be replaced.