Combustion of soot particles


With this function combustion of soot particles in the particle emission filter, via the engine control module (ECM), can be performed.

Important! Combustion of soot particles (regeneration) must be performed outdoors, if this is not possible replace the particle emission filter.

Estimated time for the combustion process is 1 hour and includes 4 phases:

  1. Start up phase, a start command initialized by the user.

  2. Warm up phase, all start conditions is fulfilled and engine speed is raised to about 2000 rpm.

  3. Combustion phase, the temperature in the particle emission filter is raised to about 600 °C. Estimated time for the combustion phase is 30 min.

  4. Cooling phase, to avoid overheating, the engine speed will be at 1200 rpm until the temperature in the particle emission filter is below 300 °C and the temperature in the catalytic converter is below 230 °C

Note:

Tip: Also the differential pressure in the particle filter can be used as an indicator of the amount of soot. Normal value at idle is between 3 hPa and 20 hPa. Combustion of soot particles shall only be performed if the differential pressure in the particle filter not exceeds 100 hPa at idle. If the differential pressure is higher then 100 hPa the particle filter must be replaced.

Test prerequisites:

Procedure:

  1. Check that all start conditions (test prerequisites) are fulfilled.

  2. Chose function: "Combustion soot particles".

  3. A dialog box present: "Content of soot in the particle filter" and "Pressure in the particle filter".

  4. If the content of soot is 100g or the pressure is over 100 hPa press "Abort" and replace the particle filter. Otherwise press "OK" to continue.

  5. A dialog box present: "Start combustion", the time for combustion of soot particles may be 1 hour. Press "OK" to start the function or "Abort" to exit. Caution! The exhaust temperature can raise to about 600 °C. Make sure the smoke extraction and associated equipment can resist the high temperature.

  6. A dialog box present: "Combustion status:" - (Presents the combustion in progress). If the combustion must be terminated chose "Abort".

  7. When combustion status present: "Combustion finished", it can take about one hour, press "OK" to continue.

  8. A dialog box present: "Press OK to finish test".

  9. A dialog box present: "Combustion status:" - (Presents the last combustion). Press "OK" to finish.

If the combustion fail or is aborted check the test prerequisites, the particle filter may need to be replaced.