regeneration protection method and regeneration protection apparatus for diesel particulate filter

摘要

The present invention relates to a forced regeneration protection method of a diesel particulate filter. The forced regeneration protection method for a diesel particulate filter according to the present invention includes: a forced regeneration determination step (S10) for determining whether there is a regeneration signal for performing forced regeneration of a diesel particulate filter (DPF); A relay holding step (S20) of turning on the relay in the equipment control unit (VCU) to continuously supply power to the engine and proceeding to the next step if there is a regeneration signal in the forced regeneration judgment step (S10); If there is no reproduction signal in the forced reproduction judgment step (S10), a relay end waiting step (S30) in which the equipment control unit (VCU) keeps the relay 'OFF' state and goes to the next step; It is determined whether the key 20 is in the OFF position after the relay holding step S20 and the relay end waiting step S30. If the key 20 is in the ON position, A key OFF determination step S40; And terminating the relay (S100) when the key 20 is 'OFF' in the key OFF determination step S40, maintaining the relay in the "ON" state until the forcible reproduction is completed, do.