Aftertreatment manifold device

Patent metadata

Field	Value
Publication number	US-9295946-B2
Application number	US-201313869640-A
Country	US
Kind code	B2
Filing date	Apr 24, 2013
Priority date	Sep 12, 2011
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

An aftertreatment subsystem includes first and second mounting interfaces, a fluid inlet and fluid outlet interface, and aftertreatment components, each having a central axis and axial extent. The central axes for the aftertreatment components are substantially parallel. End caps define fluid chambers that fluidly couple upstream aftertreatment component outlets with downstream aftertreatment components inlets. The end caps are positioned at a first or second end of the aftertreatment components. A first bracket joins the aftertreatment components at an axial position closer to the first end than to a center of the axial extent of any of the aftertreatment components and a second bracket joins the aftertreatment components at an axial position closer to the second end than to the center of the axial extent of any of the aftertreatment components. The first mounting interface is on the first bracket, and the second mounting interface is on the second bracket.

First claim

What is claimed is:

1. A system for treating exhaust gas of an internal combustion engine, comprising:
a first aftertreatment component having a first central axis and a first axial extent, a second aftertreatment component having a second central axis and a second axial extent, and a third aftertreatment component having a third central axis and a third axial extent;
wherein the first, second, and third central axes are substantially parallel;
wherein at least a portion of the second axial extent and the third axial extent are shared with the first axial extent;
a first end cap at a first end, the first end cap defining a first fluid chamber that fluidly couples an outlet of the first aftertreatment component with an inlet of the second aftertreatment component;
a second end cap at a second end, the second end cap defining a second fluid chamber that fluidly couples an outlet of the second aftertreatment component with an inlet of the third aftertreatment component; and
a first bracket having a first mounting interface, wherein the first bracket joins the first aftertreatment component, the second aftertreatment component, and the third aftertreatment component at an axial position closer to the first end than to a center of the second axial extent, the first bracket defining a first cross-sectional shape sized so as to allow passage of the first aftertreatment component therethrough, a second cross-sectional shape sized so as to allow passage of the second aftertreatment component therethrough and a third cross-sectional shape sized so as to allow passage of the third aftertreatment component therethrough such that the first bracket encircles each of the first aftertreatment component, the second aftertreatment component and the third aftertreatment component.

2. The system of claim 1 , wherein the first end cap comprises the cross-sectional area of the first aftertreatment component and the cross-sectional area of the second aftertreatment component.

3. The system of claim 1 , wherein the second end cap comprises the cross-sectional area of the second aftertreatment component and the cross-sectional area of the third aftertreatment component.

4. The system of claim 1 , wherein the system does not include pipe elbows.

5. The system of claim 1 , further comprising a sensor table mounted on a housing defining the third aftertreatment component, the sensor table comprising a wiring harness interface.

6. The system of claim 1 , further comprising a reductant injector structured to inject reductant into the first fluid chamber.

7. The system of claim 1 , further comprising a second bracket having a second mounting interface, wherein the second bracket joins the first aftertreatment component, the second aftertreatment component, and the third aftertreatment component at an axial position closer to the second end than to a center of the second axial extent.

8. The system of claim 7 , wherein a band clamp attaches the first aftertreatment component to the second bracket.

9. The system of claim 7 , wherein the first mounting interface and the second mounting interface define a plane.

10. The system of claim 1 , wherein the first aftertreatment component comprises a diesel oxidation catalyst in series with a diesel particulate filter, wherein the second aftertreatment component comprises a flow pipe, and wherein the third aftertreatment component comprises a selective catalytic reduction catalyst in series with an ammonia oxidation catalyst.

11. The system of claim 1 , wherein the first aftertreatment component further comprises a fluid inlet interface that projects from the first aftertreatment component at the second end of the first aftertreatment component, and wherein the third aftertreatment component further comprises a fluid outlet interface that projects from the third aftertreatment component at the first end of the third aftertreatment component.

12. The system of claim 1 , wherein an exhaust fluid flows through the first aftertreatment component and the third aftertreatment component in a first direction, and wherein the exhaust fluid flows through the second aftertreatment component in a second direction.

13. An aftertreatment subsystem comprising:
a plurality of interfaces comprising a first mounting interface, a second mounting interface, a fluid inlet interface, and a fluid outlet interface;
a plurality of aftertreatment components, each aftertreatment component having a corresponding central axis and axial extent, the aftertreatment components having a first end and an opposing second end;
wherein the central axes for the plurality of aftertreatment components are within twenty degrees of parallel;
wherein at least a portion of the axial extents for the plurality of aftertreatment components are mutually shared;
at least one end cap defining a fluid chamber that fluidly couples an outlet of an upstream aftertreatment component with an inlet of a downstream aftertreatment component, wherein each end cap is positioned at one of the first end and the second end of the upstream and downstream aftertreatment components;
wherein the fluid inlet interface is coupled to a first aftertreatment component and the fluid outlet interface is coupled to a last aftertreatment component;
a first bracket that joins the plurality of aftertreatment components at an axial position closer to the first end than to a center of the axial extent of any one of the plurality of aftertreatment components, the first bracket defining a plurality of cross-sectional shapes corresponding to each of the plurality of aftertreatment components, the plurality of cross-sectional shapes structured so as to allow passage of a corresponding aftertreatment component of the plurality of aftertreatment components therethrough such that the first bracket encircles each of the plurality of aftertreatment components;
a second bracket that joins the plurality of aftertreatment components at an axial position closer to the second end than to the center of the axial extent of any one of the plurality of aftertreatment components; and
wherein the first bracket comprises the first mounting interface and wherein the second bracket comprises the second mounting interface.

14. The aftertreatment subsystem of claim 13 , further comprising a reductant injector interface positioned on one of:
one of the at least one end caps; and
a housing of one of the plurality of aftertreatment components.

15. The aftertreatment subsystem of claim 14 , further comprising a wiring harness interface coupled to a housing of one of the plurality of aftertreatment components.

16. The aftertreatment system of claim 15 , wherein the aftertreatment subsystem does not include any other interfaces.

17. The aftertreatment system of claim 13 , wherein an exhaust fluid substantially reverses flow direction through each of the at least one end cap.

18. The aftertreatment system of claim 13 , wherein the first end comprises a furthest extent of any of the aftertreatment components in a first axial direction, and wherein the second end comprises a furthest extent of any of the aftertreatment components in an opposite axial direction.

19. The aftertreatment system of claim 13 , wherein the central axes for the plurality of aftertreatment components are parallel.

20. A method, comprising:
providing an aftertreatment subsystem comprising:
a plurality of interfaces comprising a first mounting interface, a second mounting interface, a fluid inlet interface, and a fluid outlet interface;

Assignees

• Cummins Emission Solutions Inc
• Cummins Emission Solutions Inc

Inventors

• Lamps Michael
• Lubenow Scott
• Ebbe Kyle
• Goss James
• Nowicki Robert
• Klein Pat
• Welp Michael
• Drost Jason
• Hall David
• Wadke Aashish
• Zenger Jamie
• Steele Jonathan

Classifications

• Y10T29/49345

  Catalytic device making · CPC title

• B01D53/9477 Primary

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

• F01N13/18

  Construction facilitating manufacture, assembly, or disassembly · CPC title

• F01N13/008 Primary

  Mounting or arrangement of exhaust sensors in or on exhaust apparatus (sensor arrangements for engine control F02D41/1439) · CPC title

• F02D2400/22

  Connectors or cables specially adapted for engine management applications · CPC title