Mixing device for exhaust gas in automobile

Abstract

The present invention relates to a mixing device for an exhaust gas in an automobile, and more particularly, to a mixing device for an exhaust gas, capable of increasing a mixing property between the exhaust gas and a reducing agent by making the exhaust gas that passes through the mixing device be swirled doubly. The mixing device for an exhaust gas, including: a hollow plate-typed flange that is arranged on a flow path of the exhaust gas; a frame member of which a diameter decreases gradually toward a center of the flange; and a diffusion plate that partitions the inner part of the flange and diffuses the exhaust gas and a reduction agent injected through an injector.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of filed Korean Patent Application No. 10-2011-0122359 under 35 U.S.C. §119(a), which is incorporated herein by reference. technical field [0003] The present invention relates to a mixing device for exhaust gas in automobiles, more particularly to a mixing device for exhaust gas capable of increasing the mixing between exhaust gas and reducing agent by making the exhaust gas passing through said mixing device into a double swirl nature. Background technique [0004] Generally, exhaust gas discharged from the engine through the exhaust manifold is guided to a diesel particulate filter (hereinafter referred to as "DPF"), a selective catalytic reduction device (hereinafter referred to as "SCR device"), or The NOx storage reduction catalyst (hereinafter referred to as "NSR catalyst") is purified and the exhaust gas passes through the muffler while its noise is reduced, and then the ex...

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Problems solved by technology

[0007] However, according to the related art, the flow of exhaust gas is limited to one direction, so the second mixing property is not caused in the existing diffusion device, thereby deteriorating the mixing property

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