EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of efficiently purifying exhaust gas even when HC contained in exhaust gas is excessive and ratios of HC and NOx are remarkably different.

SOLUTION: This exhaust emission control device is provided with an oxidation catalyst part 8, a plasma process part 4 and a NOx conversion catalyst part 5 from an upstream in an exhaust channel in which exhaust gas exhausted from the engine 1. The oxidation catalyst part 8 is provided with a main channel 31 in which exhaust gas flows with touching the oxidation catalyst and a bypass channel 9 in which exhaust gas flows without touching the oxidation catalyst.

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