Particulate filter for purifying exhaust gas, has primary and secondary flow paths which are connected to filter element for cleaning exhaust gas during normal operation, and for cleaning ash during maintenance operation

摘要

The particulate filter (1) has a switchable exhaust valve (2) which establishes a primary flow path (7) and a secondary flow path (11) of the exhaust gas through the filter element (9). The primary flow path is connected to the filter element for cleaning of the exhaust gas during normal operation. The secondary flow path is connected to the filter element for cleaning ash during the maintenance operation.