| 摘要 |
The particulate filters (1) are arranged to be regenerated by a respective burner (21,22). Quantities related to the clogging of a respective filter by particulate are measured by a venturi device (6) connected with pressure sensors (31,32,33), enclosed with a temperature sensor (34), in a container (35). Regeneration is initiated by a processing and computing unit when a predetermined upper clogging limit for a respective filter has been reached. The level of clogging is monitored periodically and a last calculated clogging level is ampered with the previous level. level. If it is determined that the clogging level shows a reduction not caused by intentional regeneration, a new clogging limit is defined, which is lower than the previously-defined clogging limit. |
