EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device for preventing temperature of a particulate filter from being reduced below activation lower limit temperature of an oxidation catalyst by low temperature exhaust gas flowing through the particulate filter and for satisfactorily regenerating the particulate filter.

SOLUTION: The exhaust emission control device is equipped with a bypass means 23 for inhibiting and diverting exhaust gas 9 from flowing through the oxidation catalyst 14 and the particulate filer 13 in a filter case at the time of no-fuel injection in a diesel engine 1.

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