Mounting support for heat shield reinforcement

Patent metadata

Field	Value
Publication number	US-10024211-B2
Application number	US-201615140743-A
Country	US
Kind code	B2
Filing date	Apr 28, 2016
Priority date	Apr 17, 2015
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

An aftertreatment system comprises a SCR system. The SCR system includes a housing having an inlet, an outlet and defining an internal volume. At least one catalyst can be positioned within the internal volume. A mounting support is positioned around at least a portion of a perimeter of the housing. A heat shield is positioned around the perimeter of the housing such that the housing is positioned substantially within the heat shield. A portion of the heat shield is disposed on and in contact with the mounting support. A clamp is positioned around a heat shield perimeter. The clamp is positioned on the portion of the heat shield disposed on and in contact with the mounting support. The mounting support is configured to transmit a clamping force of the clamp on the heat shield to the housing to prevent buckling of the heat shield from the clamping force.

First claim

What is claimed is:

1. An aftertreatment system, comprising:
a selective catalytic reduction system, including:
a housing having an inlet, an outlet and defining an internal volume;

a mounting support positioned around at least a portion of a perimeter of the housing, the mounting support being located apart from the housing such that a gap is located between a sidewall of the mounting support and a sidewall of the housing;
a heat shield positioned around the perimeter of the housing such that the housing is positioned substantially within the heat shield, a portion of the heat shield disposed on and in contact with the mounting support;
a clamp positioned around a heat shield perimeter, the clamp positioned on the portion of the heat shield disposed on and in contact with the mounting support; and
an insulating member disposed in the gap between the sidewall of the mounting support and the sidewall of the housing,
wherein the mounting support is configured to transmit a clamping force of the clamp on the heat shield to the housing, the mounting support preventing buckling of the heat shield from the clamping force.

2. The aftertreatment system of claim 1 , wherein at least one catalyst is positioned within the internal volume defined by the housing.

3. The aftertreatment system of claim 2 , wherein the mounting support includes a C-shaped member.

4. The aftertreatment system of claim 2 , wherein the housing has a circular cross-section.

5. The aftertreatment system of claim 4 , wherein the mounting support includes a circular ring shaped member.

6. The aftertreatment system of claim 4 , wherein the mounting support includes a plurality of partial-circular pieces.

7. The aftertreatment system of claim 2 , wherein a surface of the mounting support is substantially flat.

8. The aftertreatment system of claim 2 , wherein the mounting support is welded to the housing.

9. The aftertreatment system of claim 8 , wherein the mounting support is welded to the housing on only one side of the housing.

10. The aftertreatment system of claim 2 , wherein the mounting support comprises a single piece, and wherein the mounting support is configured to slide over the housing.

11. The aftertreatment system of claim 2 , wherein the mounting support is formed from 14 gage thickness stainless steel.

12. The aftertreatment system of claim 1 , wherein flanges are defined on edges of the sidewall of the mounting support, the flanges configured to be positioned on either side of the insulating member adjacent to the housing.

13. An aftertreatment system, comprising:
a selective catalytic reduction system, including:
a housing having an inlet, an outlet and defining an internal volume;

a first mounting support positioned around at least a portion of a perimeter of the housing, the first mounting support being located apart from the housing such that a gap is located between a sidewall of the first mounting support and a sidewall of the housing;
a second mounting support positioned around at least a portion of the perimeter of the housing, the second mounting support positioned adjacent to and spaced apart from the first mounting support;
a heat shield positioned around the perimeter of the housing such that the housing is positioned substantially within the heat shield, a first portion of the heat shield disposed on and in contact with the first mounting support, and a second portion of the heat shield disposed on and in contact with the second mounting support;
a first clamp positioned concentrically around a heat shield perimeter, the first clamp positioned on the first portion of the heat shield;
a second clamp positioned concentrically around the heat shield perimeter, the second clamp positioned on the second portion of the heat shield; and
a first insulating member concentrically disposed in the gap between the sidewall of the first mounting support and the sidewall of the housing,
wherein the first mounting support and the second mounting support are configured to transmit a clamping force of the first clamp and the second clamp on the heat shield to the housing respectively, the first mounting support and the second mounting support preventing buckling of the heat shield from the clamping force.

14. The aftertreatment system of claim 13 , wherein at least one catalyst is positioned within the internal volume defined by the housing.

15. The aftertreatment system of claim 14 , further comprising:
a third clamp positioned concentrically around the heat shield, a third clamp first portion positioned on the first of the portion of the heat shield, and a third clamp second portion positioned on the second portion of the heat shield.

16. The aftertreatment system of claim 14 , wherein at least one of the first mounting support and the second mounting support includes a C-shaped member.

17. The aftertreatment system of claim 14 , wherein the housing has a circular cross-section.

18. The aftertreatment system of claim 17 , wherein the at least one of the first mounting support and the second mounting support include a circular ring.

19. The aftertreatment system of claim 14 , wherein a surface of the mounting support is substantially flat.

20. The aftertreatment system of claim 14 , wherein the second mounting support is located apart from the housing such that a gap is located between a sidewall of the second mounting support and the sidewall of the housing, and wherein a second insulating member is concentrically disposed in the gap between the sidewall of the second mounting support and the sidewall of the housing.

21. The aftertreatment system of claim 20 , wherein first flanges are defined on edges of the first mounting support, the first flanges configured to be positioned on either side of the first insulating member adjacent to the sidewall of the housing.

22. The aftertreatment system of claim 21 , wherein second flanges are defined on edges of the second mounting support, the second flanges configured to be positioned on either side of the second insulating member adjacent to the sidewall of the housing.

23. The aftertreatment system of claim 14 , wherein the first mounting support and the second mounting support are welded to the housing.

24. The aftertreatment system of claim 23 , wherein the first mounting support and the second mounting are welded to the housing on only one side of the housing.

25. An aftertreatment system, comprising:
a selective catalytic reduction system, including:
a housing having an inlet, an outlet and defining an internal volume;

a mounting support positioned concentrically around the housing, the mounting support being located apart from the housing such that a gap is located between a sidewall of the mounting support and a sidewall of the housing, the mounting support shaped in the form of a circular ring;
a heat shield positioned concentrically around the housing such that substantially all of the housing is positioned within the heat shield, a portion of the heat shield disposed on and in contact with the mounting support; and
an insulating member disposed in the gap between the sidewall of the mounting support and the sidewall of the housing,
wherein the mounting support is configured to transmit a clamping force applied on a portion of the heat shield disposed on the mounting support to the housing, the mounting support preventing buckling of the heat shield from the clampin

Assignees

• Cummins Emission Solutions Inc

Inventors

• Kodgule Nikhil S
• Lynch Michael
• Welch Ryan Robert
• Thelen Patrick

Classifications

• F01N13/185

  the connection being realised by deforming housing, tube, baffle, plate, or parts thereof · CPC title

• F01N13/143

  with air filling the space between both walls · CPC title

• F01N3/2839

  Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration · CPC title

• B01D53/9431

  Processes characterised by a specific device · CPC title

• F01N3/2066 Primary

  Selective catalytic reduction [SCR] · CPC title