EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device for internal combustion engine capable of changing a fine particle collection rate according to its surrounding environment.

SOLUTION: In the exhaust emission control device having a particulate filter 6 for collecting and removing fine particles in exhaust gas exhausted from the internal combustion engine and capable of switching on/off of taking in the exhaust gas from one of the both end faces of the particulate filter, the collection rate of fine particles of the particulate filter at the time of taking the exhaust gas from an end face is different from that at the time of taking the exhaust gas from another end face.

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