EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device in which the improper supply of an additive into an exhaust gas passage caused by a deposit accumulated on an edge surface of an injector is prevented.

SOLUTION: The injector for injecting the additive into the exhaust gas passage 12 communicating with an engine 11 is fixed in a communication passage 61 communicating with the exhaust gas passage 12 in a state of exposing the edge surface 52 where its nozzle 51 is opened. The communication passage 61 is formed to be arranged with a scratching means 80 for scratching and removing the deposit accumulated on the edge surface 52 of the injector 50 by a sliding member 81 which slides on the edge surface 52 of the injector 50.

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