Substrate shape, geometry, positioning, and/or cell density to improve aftertreatment performance

Patent metadata

Field	Value
Publication number	US-10865681-B2
Application number	US-201715781433-A
Country	US
Kind code	B2
Filing date	Oct 20, 2017
Priority date	Oct 21, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

An aftertreatment component's shape, entrance geometry, and/or position within an aftertreatment assembly can be modified for local and/or bulk exhaust flow control. In some implementations, a body of the aftertreatment component has a non-circular cross-section, a non-circular opening, and/or a variable face geometry. The non-circular cross-section and/or opening can be of a variety of different shapes.

First claim

What is claimed is:

1. A radial aftertreatment component comprising:
a substrate having a radial exterior surface, and a radial interior surface defining a central axial inlet or outlet, the substrate including a channel formed therethrough from a first end at the radial exterior surface to a second end at the radial interior surface,
wherein, in a cross-section of the substrate, the second end of the channel is tangential to the radial interior surface.

2. The radial aftertreatment component of claim 1 , wherein the substrate is a substrate for a filter or a catalyst.

3. The radial aftertreatment component of claim 1 further comprising an upstream end coupled to an aftertreatment system.

4. The radial aftertreatment component of claim 1 further comprising a downstream end coupled to an aftertreatment system.

5. The radial aftertreatment component of claim 1 , wherein the first end of the channel is perpendicular to the radial exterior surface.

6. The radial aftertreatment component of claim 1 , wherein the first end of the channel is oblique to the radial exterior surface.

7. The radial aftertreatment component of claim 1 , wherein the first end of the channel is larger than the second end of the channel.

8. The radial aftertreatment component of claim 1 , wherein the channel includes grooves or vanes.

9. The radial aftertreatment component of claim 1 , wherein at least a portion of the channel is curved.

10. A radial aftertreatment component comprising:
a substrate having a radial exterior surface, and a radial interior surface defining a central axial inlet or outlet, the substrate including a channel formed therethrough from a first end at the radial exterior surface to a second end at the radial interior surface,
wherein, in a cross-section of the substrate, the channel has an S-shape.

11. A radial aftertreatment component comprising:
a substrate having a radial exterior surface, and a radial interior surface defining a central axial inlet or outlet, the substrate including a channel formed therethrough from a first end at the radial exterior surface to a second end at the radial interior surface,
wherein the channel has a shape having at least a portion that is angled in a cross-section of the substrate, and
wherein the channel comprises a first end and a second end opposite the first end, wherein the first end is larger than the second end.

Assignees

• Cummins Emission Solutions Inc

Inventors

• Buechler John G
• Zoran Randolph G
• Johnson Ryan M
• Holl Stephen M
• Dehart Taren
• Alonzo Jim L
• Anderson Matthew L
• Kalyankar Apoorv
• Mavroudis George Eugene
• Pandit Gaurav Hemant

Classifications

• F01N3/2803 Primary

  characterised by structure, by material or by manufacturing of catalyst support · CPC title

• F01N3/0217

  the filtering elements having the form of hollow cylindrical bodies · CPC title

• F01N3/022

  characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous · CPC title

• F01N2330/60

  Discontinuous, uneven properties of filter material, e.g. different material thickness along the longitudinal direction; Higher filter capacity upstream than downstream in same housing · CPC title

• F01N3/208 Primary

  Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent · CPC title