EXHAUST EMISSION CONTROL DEVICE OF ENGINE

摘要

PROBLEM TO BE SOLVED: To stably improve the regeneration efficiency of a filter regardless of variation in injection of a fuel injection valve in an exhaust emission control device of an engine for regenerating a filter 65 provided in an exhaust system of an engine by performing after-injection.

SOLUTION: A regeneration means 91 for burning fine particles captured by a filter 65 performs after-injection control (regeneration control) when the quantity of fine particles captured amounts become to a predetermined value, and performs extending control for increasing the fuel injection quantity in the after-injection so that a rising rate of exhaust gas temperature flowing into the filter 65 is the predetermined value when the rising rate is smaller than a predetermined value after the start of regeneration control.

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