Patent ID: 10641155

Abstract:
A regeneration control device for an exhaust gas treatment device includes: a DOC blockage risk state determination part configured to determine whether the DOC is in a blockage risk state which is a state where blockage of the DOC is likely to occur, on the basis of comparison between a counter value and a threshold related to an operation time of the diesel engine; a DOC temperature increase execution part configured to execute a blockage recovery process for increasing a temperature of the DOC to a first temperature, if it is determined that the DOC is in the blockage risk state; a DPF forced regeneration condition determination part configured to determine whether a forced regeneration execution condition for the DPF is satisfied; a DPF forced regeneration execution part configured to execute a forced regeneration process for increasing a temperature of the DPF to a second temperature and increasing the temperature of the DOC to the first temperature, if the forced regeneration execution condition is satisfied; and a counter reset process part configured to reset the counter value after completion of the forced regeneration process by the DPF forced regeneration execution part.