| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine having an SCRF, for actualizing quick filter regenerating treatment.SOLUTION: In the exhaust emission control device for an internal combustion engine having an oxidation catalyst and the SCRF in an exhaust passage, a fuel supply part supplies fuel into the oxidation catalyst so that the filter regenerating treatment is performed to oxidize and remove trapped particulate matters while increasing the temperature of a filter up to a predetermined filter regenerating temperature to promote the oxidization of the particulate matters. When the filter regenerating treatment is performed, the amount of EGR gas to be recirculated into an intake system by an EGR device is further increased than the amount of EGR gas when the filter regenerating treatment is not performed. In this state, the fuel supply part supplies fuel components in predetermined amount greater than the amount to be oxidized by the oxidation catalyst during the filter regenerating treatment. |
