DPF REGENERATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a DPF regeneration control device capable of more efficiently preventing closing of a DOC than conventional techniques, and capable of reliably recovering from a closed state when the DOC is actually closed.SOLUTION: A DPF regeneration control device 10 includes: DPF temperature raising means 10A having first temperature raising means 12 for raising a temperature of a DPF to a prescribed temperature, and second temperature raising means 14 for raising the temperature of the DPF to be a temperature higher than the prescribed temperature in cooperation with the first temperature raising means; DOC closing detection means 10D for detecting closing of the DOC when a closing parameter regarding closing of the DOC detected during execution of automatic regeneration exceeds a predetermined closing threshold for a specified time period or longer; and DOC closing countermeasure means 10C for stopping automatic regeneration and asking for execution of manual regeneration for raising the temperature of the DPF to be a temperature higher than automatic regeneration when it is detected that the DOC is closed.