GB2560352A

GB2560352A - Aftertreatment canister mounting bracket

Info

Publication number: GB2560352A
Application number: GB1703746.6A
Authority: GB
Inventors: A Niaz Naseer
Original assignee: Perkins Engines Co Ltd
Current assignee: Perkins Engines Co Ltd
Priority date: 2017-03-09
Filing date: 2017-03-09
Publication date: 2018-09-12
Anticipated expiration: 2037-03-09
Also published as: GB201703746D0; CN108571370B; GB2560352B; CN108571370A

Abstract

An aftertreatment canister mounting bracket 10 comprises a frame 12 with a curved body. An internal wall 14 extends transversely from an inner periphery of the frame and an external wall 16 extends substantially transversely from an outer periphery of the frame. Angularly spaced first and second mounting tabs 18, 19 extend radially from the frame and each comprise a tab bolt hole 58. First and second plates disposed respectively on the first and second mounting tabs each have a plate bolt hole 64. Each tab bolt hole is aligned with the respective plate bolt hole. The plates may be washers. The tabs may be triangular. The frame may be an arc or an annulus. An aftertreatment canister (100, fig 5) has at least two mounting brackets welded to the housing of the canister. The brackets may be welded to a non-variable potion of the housing.

Description

(71) Applicant(s):

Perkins Engines Company Limited (Incorporated in the United Kingdom)

Frank Perkins Way, Eastfield, PETERBOROUGH, Cambs, PE1 5FQ, United Kingdom (56) Documents Cited:

EP 2189580 A2 US 20110215220 A1

US 6096108 A US 20070137022 A1 (58) Field of Search:

INT CL B60K, F01N

Other: WPI, EPODOC, Patent Full Text (72) Inventor(s):

Naseer A Niaz (74) Agent and/or Address for Service:

Caterpillar UK Legal Services Division Eastfield, PETERBOROUGH, Cambs, PE1 5FQ, United Kingdom (54) Title of the Invention: Aftertreatment canister mounting bracket Abstract Title: Aftertreatment canister mounting bracket (57) An aftertreatment canister mounting bracket 10 comprises a frame 12 with a curved body. An internal wall 14 extends transversely from an inner periphery of the frame and an external wall 16 extends substantially transversely from an outer periphery of the frame. Angularly spaced first and second mounting tabs 18, 19 extend radially from the frame and each comprise a tab bolt hole 58. First and second plates disposed respectively on the first and second mounting tabs each have a plate bolt hole 64. Each tab bolt hole is aligned with the respective plate bolt hole. The plates may be washers. The tabs may be triangular. The frame may be an arc or an annulus.

An aftertreatment canister (100, fig 5) has at least two mounting brackets welded to the housing of the canister. The brackets may be welded to a non-variable potion of the housing.

1/3

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2/3

3/3

100

AFTERTREATMENT CANISTER MOUNTING BRACKET

BACKGROUND

This disclosure relates generally to supports for internal combustion exhaust aftertreatment systems, and more particularly to a mounting bracket for supporting aftertreatment components adapted to remove particulates and other noxious emissions from exhaust gases prior to atmospheric release

Aftertreatment systems for engine exhaust gases may be utilized in various combustion engine driven machines. The aftertreatment systems are provided in order to comply with emissions laws and regulations. The aftertreatment systems may include particulate filters and catalytic converters, among other components, that are intended to remove substances considered noxious to the environment, from exhausts gases prior to release to atmosphere. Exhaust gases, and particularly those from diesel engines, may include soot, nitrogen oxides, and other noxious emissions that may be treated and/or removed by various media provided in special canisters prior to atmospheric release.

The aftertreatment systems, such as an aftertreatment canister, may be mounted to and supported by mounting structures that are associated with or affixed to engines or are directly attached to the cylinder heads of engines. There are known problems associated with conventional mounting structures that support aftertreatment systems. For aftertreatment systems that attached to peripheral devices, engine housings may be expanded or extended to accommodate the aftertreatment structures. For aftertreatment systems directly attached to cylinder heads, the weight of the attached structures may cause cylinder head cracking, and may be associated with leaks of cylinder head gaskets.

The present disclosure is directed, at least in part, to improving or overcoming one or more aspects of the prior art system.

BRIEF SUMMARY OF THE INVENTION

A bracket assembly configured for welding to a non-variable part of an aftertreatment

-1canister. The bracket assembly provides support around a minimum length of the circumference had has reinforcement plates in specific areas. The rigid/welded connection of the afterteratment system as well as the geometry/arrangement of the bracket prevents stress type damage that commonly results from using a flexible connection of an afterteratment canister to a mounting bracket, such as provided by using one or more straps to strap an afterteratment canister mounting bracket to the bracket. Geometry of the bracket prevents the canister causing stress type damage to the rigid/welded connection points between the afterteratment canister and the bracket.

In a first aspect, the present disclosure describes an aftertreatment canister mounting bracket comprising:

a frame having a substantially curved body;

an internal wall extending substantially transversely from an inner periphery of the frame; an external wall extending substantially transversely from an outer periphery of the frame; a first and a second mounting tabs extending substantially radially from the frame, wherein the first and second mounting tabs are mutually angularly spaced and wherein each of the first and second mounting tabs comprise a tab bolt hole; and a first and a second plate disposed respectively on the first and second mounting tabs, wherein each of the first and second plates comprise a plate bolt hole, and wherein each tab bolt hole is aligned with the respective plate bolt hole.

In a second aspect, the present disclosure describes an aftertreament system comprising a canister coupled with at least two aftertreatment canister mounting brackets, wherein each aftertreatment canister mounting bracket is welded to a housing of the aftertreament canister.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other features and advantages of the present disclosure will be more fully understood from the following description of various embodiments, when read together with the accompanying drawings, in which:

Fig. 1 is an isometric view of an aftertreatment canister mounting bracket, in the first

-2embodiment, according to the present disclosure;

Fig. 2 is an isometric view of a section of the aftertreatment canister mounting bracket of Fig. 1;

Fig. 3 is an isometric view of an aftertreatment canister mounting bracket, in the second embodiment, according to the present disclosure;

Fig. 4 is an isometric view of a section of the aftertreatment canister mounting bracket of Fig. 3; and

Fig. 5 is an isometric view of an aftertreatment canister with a pair of mounting brackets welded thereon.

DETAILED DESCRIPTION

This disclosure generally relates to a mounting bracket for an aftertreatment system such as an aftertreatment canister. Fig. 1 illustrates an aftertreatment canister mounting bracket 10 hereinafter referred to as mounting bracket 10. The mounting bracket 10 comprises a frame 12, an internal wall 14, an external wall 16, a first and a second mounting tab 18, 19 and a first and a second plate 20, 21.

Mounting bracket 10 may be monolithic. In an embodiment, the frame 12, the internal wall 14, the external wall 16 and the first and second mounting tabs 18 may be integrally formed and the first and second washer plates 20 may be subsequently joined to the integrally formed part of the mounting bracket 10. In an alternative embodiment, the internal wall 14, the external wall 16, the first and second mounting tabs 18 and the first and second Plates 20 may comprise washers or the like and may be separately formed and subsequently joined to form the cable support 10.

Mounting bracket 10 may comprise a mounting region 38. Mounting region 38 may be part of the mounting bracket 10 that is configured for attachment to a substrate or a support surface for positioning of an aftertreatment canister. First and second mounting tabs 18, 19 may be encompassed in the mounting region 38. Mounting region 38 may extend between the

-3extreme ends of the mounting tabs 18, 19.

Frame 12 has a substantially curved body. The curvature of frame 12 may be configured to correspond to the curvature of an aftertreatment canister. With reference to fig. 2, frame 12 may be substantially flat. Frame 12 may have a first frame surface 22 and a second frame surface 24 on opposite sides. First and second frame surfaces 22, 24 may be substantially planar along the extension of the frame 12. First and second frame surfaces 22, 24 may be substantially curved following the curvature of frame 12. First frame surface 22 may be concentric relative to the second frame surface 24. First frame surface 22 and second frame surface 24 may be parallel curves. Frame 12 may have a thickness T1 of between about 1 mm to 10 mm, and more preferably between about 1 and 5 mm. In some embodiments frame 12 may have a thickness T1 of 3 mm.

With reference to fig. 1, in a first embodiment of the mounting bracket 10, frame 12 may be formed as an arc. Frame 12 may be formed as a circular arc. The frame 12 may be formed as an arc having an angle a from about 150 degrees. Angle a may range from 150 degrees to 300 degrees. In embodiments of the present disclosure, the frame 12 may be formed as an arc having an angle a of about 145 to 180 degrees. In one embodiment, the frame 12 may be formed as an arc having an angle a of about 156 degrees.

In the first embodiment, mounting bracket 10 may comprise a first arm 40 and a second arm 42. First arm 40 and second arm 42 may extend from the mounting tabs 18 at the opposite ends of the mounting bracket 10. First arm 40 and second arm 42 may end at the first and second free ends 44, 46 of the frame 12.

With reference to figs. 1 and 2, internal wall 14 may extend substantially transversely from an inner periphery of the frame 12. Internal wall 14 may be curved. Internal wall 14 may follow the curvature of the inner periphery of frame 12. The internal wall 14 may be disposed at the inner circumference of the frame 12. The internal wall 14 may be connected to an aftertreatment canister. In an embodiment, the internal wall 14 may be welded to an aftertreatment canister.

-4Internal wall 14 may have a radius R1 of about 100 mm to 150 mm. In an embodiment, internal wall 14 may have a radius R1 of 124 mm. In an alternative embodiment, internal wall 14 may have a radius R1 of 137 mm. In yet another alternative embodiment, internal wall 14 may have a radius R1 of 143 mm.

Internal wall 14 may have a thickness T2 of between about 1 mm to 10 mm. In an embodiment, internal wall 14 may have a thickness T2 of 3 mm. Internal wall 14 may have a height Hl of 12 mm to 18 mm. In an embodiment, internal wall 14 may have a height Hl of 15 mm.

With reference to fig.2, internal wall 14 may be adjacent to the first frame surface 22. Internal wall 14 may form an inner border to the first frame surface 22. Internal wall 14 may have rounded corner 26 at the connection with frame 12. In some embodiments, the internal wall 14 may be normal to the frame 12.

Internal wall 14 may have a first internal wall surface 28 and a second internal wall surface 30 on opposite sides. First and second internal wall surfaces 28, 30 may be substantially planar along the extension of the internal wall 14 from the rounded corner 26. First and second internal wall surfaces 28, 30 may be substantially linear from the rounded corner 26. First internal wall surface 34 may be parallel relative to the second internal wall surface 36 from the rounded corner 32.

At the rounded corner, first and second internal wall surfaces 28, 30 may be curved. First internal wall surface 28 may be concentric relative to the second internal surface 30. First and second internal wall surfaces 28, 30 may be contiguous with first and second frame surfaces

22, 24.

Second internal wall surface 30 may be connected to an aftertreatment canister. In an embodiment, the second internal wall surface 30 may be welded to an aftertreatment canister. In a further embodiment, the second internal wall surface 30, extended from the rounded corner 26, may be welded to an aftertreatment canister.

-5With reference to figs. 1 and 2, external wall 16 may extend substantially transversely from an outer periphery of the frame 12. The external wall 16 may be disposed at the outer circumference of the frame 12. External wall 16 may be curved. External wall 16 may follow the curvature of the outer periphery of frame 12. External wall 16 may extend in substantially the same direction as internal wall 14 from the frame 12.

External wall 16 may be configured to be non-continuous along the frame 12. External wall 16 may be disposed on the arms 40, 42 and the mounting region 38. External wall 16 may extend along respective arms 40, 42 to respective mounting tabs 18. In an embodiment, external wall 16 may extend from the free ends 44, 46 along respective arms 40, 42 to respective mounting tabs 18. External wall 16 may extend between the mounting tabs 18 on the mounting region 38.

In some embodiments, the external wall 16 may have a radius R2 of 150 mm to 160 mm along the arms 40, 42. In one embodiment, external wall 16 may have a radius R2 of 156 mm along the arms 40, 42. In some embodiments, the external wall 16 may have a radius R3 of 160 mm to 170 mm along the mounting region 38. In an embodiment, external wall 16 may have a radius R3 of 163 mm along the mounting region 38.

In some embodiments, the external wall 16 may have a thickness T3 of 2 mm to 10 mm. In an embodiment, external wall 16 may have a thickness T3 of 3 mm. External wall 16 may have a height H2 of 6 mm to 10 mm. In an embodiment, external wall 16 may have a height H2 of 8 mm.

With reference to fig. 2, external wall 16 may be adjacent to the first frame surface 22. External wall 16 may form an outer border to the first frame surface 22. External wall 16 may have rounded corner 32 at the connection with frame 12. In an embodiment, the external wall 16 may be inclined relative to the frame 12. The mounting bracket has a substantially Cshaped cross-section with the internal wall 14 extending further than the external wall 16.

External wall 16 may have a first external wall surface 34 and a second external wall surface 36 on opposite sides. First and second external wall surfaces 34, 36 may be substantially

-6planar along the extension of the external wall 16 from the rounded corner 32. First and second external wall surfaces 34, 36 may be substantially linear from the rounded corner 32. First external wall surface 34 may be parallel relative to the second external wall surface 36 from the rounded corner 32.

At the rounded corner, first and second external wall surfaces 34, 36 may be curved. First external wall surface 34 may be concentric relative to the second external wall surface 36. First and second external wall surfaces 34, 36 may be contiguous with first and second frame surfaces 22, 24.

External wall 16 may be inclined relative to internal wall 14. External wall 16 may be inclined relative to internal wall 14 by an angle β of 8 degrees to 12 degrees. External wall 16 may be inclined relative to internal wall 14 by an angle β of 10 degrees. Frame 12 may be bound between the external wall 16 and internal wall 14. First frame surface 22 may be bound by first internal wall surface 28 and first external wall surface 34. The distance between them first internal wall surface 28 and first external wall surface 34 may remain constant at the first arm 40, second arm 42 and mounting region 18.

Fig. 3 illustrates a second embodiment of the mounting bracket 10. The mounting region 38 of the second embodiment may be identical to the mounting region 38 of the first embodiment 38. In the second embodiment of mounting bracket 10, the frame 12 may be formed as an annulus. The first and second arms 40, 42 may be connected to form a continuous body, of frame 12, so as to connect opposite ends of the mounting region 38. The first and second arms 40, 42 may be connected at a point opposite the mounting region 38.

Fig. 4 illustrates a section through the second embodiment of the mounting bracket 10. The mounting bracket has a substantially C-shaped cross-section with the internal wall 14 extending further than the external wall 16. The dimensions of the frame 12, internal wall 14 and external wall 16 of the second embodiment are identical to the dimensions of the respective structures of the first embodiment.

With respect to Figs. 1 and 3, first and second mounting tabs 18 may extend substantially

-7radially from the frame 12. The mounting bracket 10 may be mounted to a substrate or a support through the first and second mounting tabs 18. First and second mounting tabs 18 may be lateral extensions of a side of the frame 12. First and second mounting tabs 18 may extend radially away from the internal wall 14.

With reference to Fig. 4, each of first and second mounting tabs 18, 19 may be substantially flat. Each of first and second mounting tabs 18, 19 may have a first tab surface 48 and a second tab surface 50 on opposite sides. First and second tab surfaces 48, 50 may be substantially planar along the extension of the respective mounting tab 18. First and second tab surfaces 48, 50 may be mutually parallel on each mounting tab 18, 19. First and second tab surfaces 48, 50 on each mounting tab 18, 19 may be level with the first and second frame surfaces 22, 24. First and second tab surfaces 48, 50 of the first mounting tab 18 may be aligned with first and second tab surfaces 48, 50 of the second mounting tab 19.

Each mounting tab 18, 19 may have a thickness of 2 mm to 10 mm. In an embodiment, each mounting tab 18, 19 may have a thickness of 3 mm.

With reference to figs. 1 and 3, first and second mounting tabs 18, 19 may each be bound with a tab wall 52. Each tab wall 52 may be contiguous with the external wall 16. With reference to the first mounting tab 18, end tab wall 52 may be connected between the external wall 16 of the first arm 40 and the external 16 of the mounting region 38. With reference to the second mounting tab 19, end tab wall 52 may be connected between the external wall 16 of the second arm 42 and the external 16 of the mounting region 38. Mounting region 38 may start at the respective transitions from the external wall 16 to the tab wall 52 at the first and second arms 40, 42,

With reference to fig. 4, each tab wall 52 may have a first tab wall surface 54 and a second tab wall surface 56 on opposite sides. First and second tab wall surfaces 54, 56 may be substantially planar along the extension of the tab wall 52 from the respective mounting tab 18, 19. First and second tab wall surfaces 54, 56 may extend substantially linearly from the respective mounting tab 18, 19. First tab wall surface 54 may be parallel relative to the

-8second tab wall surface 56 along the respective mounting tabs 18, 19.

With reference to the first mounting tab 18, first and second tab wall surfaces 54, 56 may be contiguous with the first and second external wall surfaces 34, 36 of the respective external walls 16 of the first arm 40 and of the mounting region 38. With reference to the first mounting tab 19, first and second tab wall surfaces 54, 56 may be contiguous with the first and second external wall surfaces 34, 36 of the respective external walls 16 of the first arm 40 and of the mounting region 38.

The first and second mounting tabs 18, 19 may be mutually angularly spaced. First and second mounting tabs 18,19 may be mutually angularly spaced on the frame 12. The first and second mounting tabs 18, 19 may be mutually angularly spaced. Each of the first and second mounting tabs 18, 19 may comprise a tab bolt hole 58.

First and second mounting tab 18, 19 may be substantially triangular in shape. The first and second mounting tabs 18, 19 may each include linear sides 60 connected through a curved apex 62. Linear sides 60 may be mutually angularly separated by an angle δ of about 100 degrees to 105 degrees. The linear sides 60 may be mutually angularly separated by an angle δ of 102 degrees. Linear sides 60 may extend from the sides of the frame 12. Curved apex 62 may be opposite the frame 12. The curved apex 62 may have a radius of about 20 mm. Tab wall 52 may have a substantially triangular shape following the shape of first and second mounting tab 18, 19.

With reference to figs. 1 and 3, the first and second washer plates 20, 21 may be disposed respectively on the first and second mounting tabs 18, 19. First and second washer plates 20, 21 may be disposed on the first tab surface 48 of respective first and second mounting tabs 18, 19. First and second washer plates 20, 21 may be disposed adjacent to the tab wall 52 of respective first and second mounting tabs 18, 19.

Each of the first and second washer plate 20, 21 may comprise a plate bolt hole 64. Each tab bolt hole 58 of each first and second mounting tab 18, 19 may be aligned with the respective plate bolt hole 64 of each first and second washer plate 20, 21. A bolt may be insertable

-9through both the tab bolt hole 58 and the respective plate bolt hole 64 for mounting of the mounting bracket 10.

With reference to fig. 1, the dimensions of first and second washer plates 20, 21 may be configured for fitting within the respective mounting tabs 18, 19. The first and second washer plates 20, 21 may be configured to have a shape corresponding to the shape of the respective mounting tabs 18, 19. First and second washer plates 20, 21 may be substantially triangular in shape. The first and second washer plates 20, 21 may each include linear sides 66 connected through a curved apex 68. Linear sides 66 may be mutually angularly separated by an angle λ of about 100 degrees to 105 degrees. The linear sides 66 may be mutually angularly separated by an angle λ of 102 degrees.

First and second washer plates 20, 21 may each have a curved base 70. Curvature of curved base 70 may correspond to curvature of internal wall 14. In an embodiment, curved base 72 may demark the transition of the mounting tabs 18, 19 with the frame 12. First and second washer plates 20, 21 may each have inclined sides 72. Inclined sides 72 may be substantially linear. Each inclined sides 72 may be interposed between the curved base 70 and a linear side 66.

With reference to fig. 3, curved apex 68 may be positioned so as to correspond to the curved apex 62 of the respective mounting tabs 18, 19. The curved apex 68 may have a radius of about 20 mm.

With reference to fig. 5, an aftertreament canister 100 may comprise at least two aftertreatment canister mounting brackets 10. Each aftertreatment canister mounting bracket 10 may be welded to a housing 102 of the aftertreament canister 100. The aftertreatment canister mounting brackets 10 may be welded to a non-variable portion of the housing 102.

Mounting brackets 10 may be positioned such that the respective mounting regions 38 are aligned. The respective frames 12 may be mutually parallel. Mounting brackets 10 may be orientated such that corresponding second frame surfaces 24 may face each other. Mounting brackets 10 may be orientated such that corresponding second tab surfaces 50 may face each

-10other.

The skilled person would appreciate that foregoing embodiments may be modified or combined to obtain the aftertreatment canister mounting bracket 10 of the present disclosure.

Industrial Applicability

This disclosure describes an aftertreatment canister mounting bracket 10 for supporting an aftertreatment canister 100 on a substtate such a cylinder head, a portion of an engine block or a peripheral device. In embodiments of the present disclosure, because of its configuration, aftertreatment canister mounting bracket 10 may be able to support the mounted aftertreatment canister 100 without developing stress fractures over an extended duration. The a aftertteatment canister mounting bracket 10 may provide support of an aftertreatment canister 100 above a diesel engine without issues of structural cracking and/or cylinder head gasket leaks over an extended duration.

Accordingly, this disclosure includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the disclosure unless otherwise indicated herein.

Where technical features mentioned in any claim are followed by reference signs, the reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, neither the reference signs nor their absence have any limiting effect on the technical features as described above or on the scope of any claim elements.

One skilled in the art will realise the disclosure may be embodied in other specific forms without departing from the disclosure or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting of the disclosure described herein. Scope of the invention is thus indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalence of the claims are therefore intended to be embraced therein.

Claims

1. An aftertreatment canister mounting bracket (10) comprising: a frame (12) having a substantially curved body;

an internal wall (14) extending substantially transversely from an inner periphery of the frame (12);

an external wall (16) extending substantially transversely from an outer periphery of the frame (12);

a first and a second mounting tabs (18, 19) extending substantially radially from the frame (12), wherein the first and second mounting tabs (18, 19) are mutually angularly spaced and wherein each of the first and second mounting tabs (18, 19) comprise a tab bolt hole (58); and a first and a second plate (20, 21) disposed respectively on the first and second mounting tabs (18, 19), wherein each of the first and second plates (20, 21) comprise a plate bolt hole (64), and wherein each tab bolt hole (58) is aligned with the respective plate bolt hole (64).

2. The aftertreatment canister mounting bracket (10) of claim 1 wherein the frame (12) is formed as an arc.

3. The aftertreatment canister mounting bracket (10) of claim 1 wherein the first and second plates (20, 21) comprise washers.

4. The aftertreatment canister mounting bracket (10) of claim 2 wherein the frame (12) is formed as an arc having an angle from about 150 degrees.

5. The aftertreatment canister mounting bracket (10) of claim 3 wherein the frame (12) is formed as an arc having an angle of about 156 degrees.

6. The aftertreatment canister mounting bracket (10) of claim 1 wherein

-12the frame (12) is formed as an annulus.

7. The aftertreatment canister mounting bracket (10) of any one of preceding claims wherein the internal wall (14) is substantially perpendicular to the frame (12).

8. The aftertreatment canister mounting bracket (10) of any one of preceding claims wherein the external wall (16) is substantially inclined relative to the internal wall (14).

9. The aftertreatment canister mounting bracket (10) of claim 7 wherein the external wall (16) is substantially inclined relative to the internal wall (14) by an angle of 10 degrees.

10. The aftertreatment canister mounting bracket (10) of any one of preceding claims wherein the first and second mounting tabs (18, 19) is each bound with a tab wall (52) contiguous with the external wall (16).

11. The aftertreatment canister mounting bracket (10) of any one of preceding claims wherein the first and second mounting tabs (18, 19) is each substantially triangular in shape including first and second linear sides (60, 61) connected through a curved apex (62).

12. The aftertreatment canister mounting bracket (10) of claim 10 wherein the curved apex (62) has a radius of about 20 mm.

13. The aftertreatment canister mounting bracket (10) of claims 10 or 11 wherein the first linear side (60) is inclined relative to the second liner side (62) by an angle (δ) about 100 to 105 degrees.

14. An aftertreament canister (100) comprising at least two aftertreatment

-13canister mounting brackets (10) of any one of preceding claims wherein each aftertreatment canister mounting bracket (10) is welded to a housing of the aftertreament canister (100).

15. The aftertreament canister (100) of claim 14 wherein the aftertreatment 5 canister mounting brackets (10) are welded to a non-variable portion of the housing.

-14Intellectual

Property

Office

Application No: GB1703746.6 Examiner: Rachel Smith