EXHAUST EMISSION CONTROL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control system not requiring any change of the layout of a reducer adding device even if export to a region where temperature is high is considered.

SOLUTION: The exhaust emission control system is provided with the reducer adding device 28 supplying reducer to a nozzle injecting reducer to an exhaust gas upstream of a reduction catalyst provided in an engine exhaust pipe of a vehicle according to an engine operation condition. The system is characterized by including a blower 40 for cooling the reducer adding device 28 and a temperature switch 42 controlling the blower 40 based on ambient temperature of a vicinity of the engine.

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