UREA REDUCTION TYPE SCR DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a urea reduction type SCR device for an internal combustion engine, improving fuel economy performance by reducing generation of a vortex and reducing a pressure loss caused by disturbing an exhaust gas flow, and improving exhaust performance by promoting a mixture of urea water and exhaust gas.

SOLUTION: A swirl flow generator (30) is configured by combining in a cross shape a first fin (31) with a second fin (32). The first fin and second fin are thin plate members respectively having right blades (31G) and left blades (31H) which are formed by being arcuately bent alternately.

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