EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of determining the regeneration timing of a trapping mechanism with high accuracy in an exhaust emission control device for an internal combustion engine provided with the trapping mechanism for trapping particulates such as a soot contained in an exhaust gas.

SOLUTION: This exhaust emission control device for the internal combustion engine performs the regeneration treatment of a particulate filter provided that an exhaust pressure loss caused by the particulate filter installed in an exhaust passage of the engine exceeds a predetermined judgment reference value, and is characterized in that the judgment standard value is corrected in response to the pressure loss detected just after the particulate filter is regenerated.

COPYRIGHT: (C)2003,JPO