Systems and methods for converting shear flow into axial flow in an exhaust system

Patent metadata

Field	Value
Publication number	US-2021003058-A1
Application number	US-202016913426-A
Country	US
Kind code	A1
Filing date	Jun 26, 2020
Priority date	Jul 2, 2019
Publication date	Jan 7, 2021
Grant date	—

Abstract

An aftertreatment system includes an exhaust conduit and a vane plate. The vane plate is located in the exhaust conduit. The vane plate includes a plurality of first vanes. The vane plate includes a plurality of second vanes that intersects the plurality of first vanes. The plurality of first vanes and the plurality of second vanes form a plurality of channels. The vane plate is configured to redirect flow of exhaust gas through the exhaust conduit to be in an axial direction of the exhaust conduit.

First claim

What is claimed is:

1 . An aftertreatment system comprising:
an exhaust conduit; and a vane plate located in the exhaust conduit, the vane plate comprising:
a plurality of first vanes; and
a plurality of second vanes that intersect the plurality of first vanes;
wherein the plurality of first vanes and the plurality of second vanes form a plurality of channels;
wherein the vane plate is configured to redirect flow of exhaust gas through the exhaust conduit to be in an axial direction of the exhaust conduit.

2 . The aftertreatment system of claim 1 , wherein:
an angle between a first direction in which the plurality of first vanes extend and a second direction in which the plurality of second vanes extend is in a range of 80° to 100°.

3 . The aftertreatment system of claim 1 , wherein:
each of the plurality of channels has a rectangular cross-section.

4 . The aftertreatment system of claim 3 , wherein:
each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit.

5 . The aftertreatment system of claim 3 , wherein:
each of the plurality of channels has a length and a width in a range of 5 mm to 105 mm in a direction perpendicular to the axial direction of the exhaust conduit.

6 . The aftertreatment system of claim 3 , wherein:
each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit; and each of the plurality of channels has a length and a width in a range of 5 mm to 105 mm in a direction perpendicular to the axial direction of the exhaust conduit.

7 . The aftertreatment system of claim 1 , wherein:
a ratio of a cross-sectional area of the plurality of channels perpendicular to the axial direction of the exhaust conduit to a cross-sectional area of the vane plate perpendicular to the axial direction of the exhaust conduit is greater than 60%.

8 . The aftertreatment system of claim 1 , further comprising:
a turbocharger configured to output the exhaust gas.

9 . The aftertreatment system of claim 1 , further comprising:
a catalyst unit; and a turbocharger configured to output the exhaust gas to the catalyst unit, wherein the vane plate is located downstream of the turbocharger and upstream of the catalyst unit.

10 . The aftertreatment system of claim 1 , wherein:
the plurality of first vanes extend in radial directions from a central hub; and the plurality of second vanes extend concentrically around the central hub.

11 . The aftertreatment system of claim 10 , wherein:
each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit.

12 . The aftertreatment system of claim 1 , wherein:
each of the plurality of channels has a sector-shaped cross-section or an annular sector-shaped cross-section.

13 . A vane plate assembly comprising:
a vane plate configured to couple with an exhaust conduit, the vane plate comprising:
a plurality of first vanes; and
a plurality of second vanes that intersect the plurality of first vanes;
wherein the plurality of first vanes and the plurality of second vanes form a plurality of channels;
wherein the vane plate is configured to redirect flow of exhaust gas through the exhaust conduit to be in an axial direction of the exhaust conduit.

14 . The vane plate assembly of claim 13 , wherein:
an angle between a first direction in which the plurality of first vanes extend and a second direction in which the plurality of second vanes extend is in a range of 80° to 100°.

15 . The vane plate assembly of claim 13 , wherein:
each of the plurality of channels has a rectangular cross-section.

16 . The vane plate assembly of claim 15 , wherein:
each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit.

17 . The vane plate assembly of claim 15 , wherein:
each of the plurality of channels has a length and a width in a range of 5 mm to 105 mm in a direction perpendicular to the axial direction of the exhaust conduit.

18 . The vane plate assembly of claim 13 , wherein:
a ratio of a cross-sectional area of the plurality of channels perpendicular to the axial direction of the exhaust conduit to a cross-sectional area of the vane plate perpendicular to the axial direction of the exhaust conduit is greater than 60%.

19 . The vane plate assembly of claim 13 , wherein:
the plurality of first vanes extend in radial directions from a central hub; and the plurality of second vanes extend concentrically around the central hub.

20 . The vane plate assembly of claim 13 , wherein each of the plurality of channels has a sector-shaped cross-section or an annular sector-shaped cross-section.

Assignees

• Cummins Emission Solutions Inc

Inventors

• Canik Jacob D
• Verseman Corey

Classifications

• B01D2258/012

  Diesel engines and lean burn gasoline engines · CPC title

• B01D53/9431

  Processes characterised by a specific device · CPC title

• B01D53/9477

  with catalysts positioned on separate bricks, e.g. exhaust systems · CPC title

• B01D2257/404

  Nitrogen oxides other than dinitrogen oxide · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title