阅读说明：本技术 包括带螺纹的拆卸元件的排放控制装置 (Emission control device including threaded removal element ) 是由 G·约恩松 A·哈利洛维奇 O·拉松 于 2020-04-21 设计创作，主要内容包括：本发明涉及一种用于燃烧发动机后处理装置(2)的排放控制装置(4),所述排放控制装置(4)包括：壳体(22),所述壳体被配置成容纳排放控制基板(48)；以及所述壳体(22)中的至少一个第一开口(24),所述至少一个第一开口(24)被配置成用于接收带螺纹的组装元件(26),所述带螺纹的组装元件(26)被配置成用于在所述后处理装置(2)的腔(20)中组装所述排放控制装置(4)。排放控制装置(4)还包括壳体(22)中的至少一个第二开口(30),其中至少一个第二开口(30)设置有螺纹(32),并被配置成用于接收带螺纹的拆卸元件(62),所述带螺纹的拆卸元件(62)被配置成用于从所述后处理装置(2)的腔(20)拆卸排放控制装置(4)。本发明还涉及一种燃烧发动机后处理装置(2)。本发明还涉及一种车辆(1)。本发明还涉及一种用于根据所附权利要求拆卸排放控制装置(4)的方法。(The invention relates to an emission control device (4) for a combustion engine aftertreatment device (2), the emission control device (4) comprising: a housing (22) configured to house an emissions control substrate (48); and at least one first opening (24) in the housing (22), the at least one first opening (24) configured to receive a threaded assembly element (26), the threaded assembly element (26) configured to assemble the emission control device (4) in a cavity (20) of the aftertreatment device (2). The emission control device (4) further comprises at least one second opening (30) in the housing (22), wherein the at least one second opening (30) is provided with a thread (32) and is configured for receiving a threaded dismounting element (62), the threaded dismounting element (62) being configured for dismounting the emission control device (4) from the cavity (20) of the aftertreatment device (2). The invention also relates to a combustion engine aftertreatment device (2). The invention also relates to a vehicle (1). The invention also relates to a method for disassembling an emission control device (4) according to the appended claims.)

1. An emission control device (4) for a combustion engine aftertreatment device (2), the emission control device (4) comprising:

a housing (22) configured to house an emissions control substrate (48); and

at least one first opening (24) in the housing (22), the at least one first opening (24) configured to receive a threaded assembly element (26), the threaded assembly element (26) configured to assemble the emission control device (4) in a cavity (20) of the aftertreatment device (2);

characterized in that the emission control device (4) further comprises:

at least one second opening (30) in the housing (22), wherein the at least one second opening (30) is provided with a thread (32), the at least one second opening being configured for receiving a threaded dismounting element (62), the threaded dismounting element (62) being configured for dismounting the emission control device (4) from the cavity (20) of the aftertreatment device (2).

2. The device (4) according to claim 1, wherein the housing (22) comprises a flange portion (34), wherein the at least one first opening (24) and the at least one second opening (30) are arranged in the flange portion (34).

3. Device (4) according to claim 2, characterized in that at least two first openings (24) are evenly distributed in the flange portion (34).

4. Device (4) according to any one of claims 1 and 2, characterized in that at least two second openings (30) are evenly distributed in the flange portion (34).

5. Device (4) according to any one of claims 2-4, characterized in that the flange portion (34) is releasably arranged on the housing (22).

6. Device (4) according to any one of claims 2-5, characterized in that the flange portion (34) is an edge (36) of a cover (38) of the housing (22), which cover (38) is releasably arranged on the housing (22).

7. Device (4) according to any one of the preceding claims, characterized in that the housing (22) comprises at least one sealing element (54) provided with a radially directed sealing surface (56).

8. The device (4) according to claim 7, wherein the at least one sealing element (54) is configured to be compressed in a radial direction when the emission control device (4) is assembled in the aftertreatment device (2).

9. Device (4) according to any one of the preceding claims, characterized in that the housing (22) comprises a suspension element (60) configured to be compressed in a radial direction when assembling the emission control device (4) in the aftertreatment device (2).

10. The device (4) according to any one of the preceding claims, wherein the housing (22) is a filter housing (50) configured to accommodate a particulate filter substrate (52).

11. A combustion engine aftertreatment device (2) comprising an emission control device (4) according to any one of the preceding claims.

12. Combustion engine aftertreatment device (2) according to claim 11, characterized in that the threaded assembly element (26) comprises at least one threaded pin (28) of the aftertreatment device (2) and at least one nut (29) configured to be screwed on the threaded pin (28).

13. The combustion engine aftertreatment device (2) according to claim 11, characterized in that the threaded assembly element (26) comprises at least one screw configured to be screwed into a threaded hole (31) of the aftertreatment device (2).

14. The combustion engine aftertreatment device (2) of any one of claims 11-13, wherein the threaded assembly element (26) is a fastener element configured to attach the emission control device (4) to the aftertreatment device (2).

15. Combustion engine aftertreatment device (2) according to any of claims 11-14, characterized in that the threaded dismounting element (62) comprises a screw.

16. A vehicle (1) comprising a combustion engine aftertreatment device (2) according to any one of claims 11-15.

17. A method for dismounting an emission control device (4) from a combustion engine aftertreatment device (2), the emission control device (4) comprising:

a housing (22) configured to house an emissions control substrate (48);

at least one first opening (24) in the housing (22), the at least one first opening (24) configured to receive a threaded assembly element (26); and

at least one threaded second opening (30) in the housing (22) configured to receive a threaded removal element (62), wherein the method comprises the steps of:

positioning (s101) the threaded dismounting element (62) in the at least one threaded second opening (30);

rotating (s102) the dismounting element (62) such that the dismounting element (62) is moved in an axial direction towards an abutment surface (64) of the aftertreatment device (2); and

-applying (s103) a torque to the dismounting element (62) such that the thread (66) of the dismounting element (62) applies a force to the thread (32) of the second opening (30) in the direction of the centre axis (70) of the second opening (30), which axial force pushes the emission control device (4) out of the cavity (20) of the aftertreatment device (2).

18. The method according to claim 17, wherein the method comprises the further step of:

removing (s104) the threaded makeup element (26) before applying torque to the breakout element (62).

Technical Field

The present invention relates to an emission control device for a combustion engine aftertreatment device according to the appended claims. The invention also relates to a combustion engine aftertreatment device according to the appended claims. The invention also relates to a vehicle according to the appended claims. The invention also relates to a method of disassembling an emission control device according to the appended claims.

Background

Combustion engines, such as diesel engines, are used in different types of machines, such as vehicles. However, combustion engines produce emissions that include exhaust gases and particulate matter. Various aftertreatment devices have been employed in the exhaust system of combustion engines to clean the exhaust gases and particulate matter. Diesel particulate filters have been used to remove particulate matter from exhaust gas from diesel engines. However, the substrate inside such emission control filters may become saturated over time as particulate matter and other matter accumulate on the emission control substrate. Therefore, the emission control substrate may need to be cleaned or replaced.

Disassembling and assembling the emission control substrate for cleaning or replacement may require the use of specially adapted tools. Additionally, due to the positioning of the emission control substrate in the exhaust system, disassembly and assembly of the emission control substrate may be complicated and time consuming. The entire maintenance process of the emission control substrate may require a significant amount of time and access to specially adapted tools, which may be costly.

Document US2010024407 a1 discloses a removable exhaust treatment unit for an aftertreatment assembly. The removable exhaust treatment unit includes a housing, at least one exhaust treatment element coupled within the housing, and a flange on one end of the housing. The removable exhaust treatment unit also includes a plurality of apertures on the flange configured to receive a plurality of fasteners. The removable exhaust treatment unit also includes at least one handle coupled to the flange. A seal for axial compression is disposed between the flange and the annular support portion of the housing of the emission control filter assembly.

Disclosure of Invention

Despite the solutions known in the art, it is desirable to implement an emission control device for a combustion engine aftertreatment device that eliminates the need for special tools for assembling and disassembling the emission control device in a cavity of the aftertreatment device. Furthermore, it would be desirable to implement an emission control device for a combustion engine aftertreatment device, wherein the sealing element of the emission control device can be inspected when the emission control device is assembled in a cavity of the aftertreatment device. Furthermore, it is desirable to achieve an emission control device for a combustion engine aftertreatment device, wherein the emission control substrate can be easily cleaned or replaced. Furthermore, it is desirable to achieve an emission control device for a combustion engine aftertreatment device, wherein the radially directed forces originating from the sealing element of the emission control device make it possible to assemble and disassemble the emission control device in the cavity of the aftertreatment device without specially adapted tools.

It is therefore an object of the present invention to achieve an emission control device for a combustion engine aftertreatment device, which eliminates the need for specially adapted tools for assembling and disassembling the emission control device in a cavity of the aftertreatment device.

Another object of the present invention is to achieve an emission control device for an after-treatment device of a combustion engine, wherein the sealing element of the emission control device can be inspected when the emission control device is assembled in the cavity of the after-treatment device.

Another object of the invention is to achieve an emission control device for a combustion engine aftertreatment device, wherein the emission control substrate can be easily cleaned or replaced.

Another object of the present invention is to achieve an emission control device for a combustion engine aftertreatment device, wherein the radially directed forces originating from the sealing element of the emission control device make it possible to assemble and disassemble the emission control device in the cavity of the aftertreatment device without specially adapted tools.

The objects mentioned herein are achieved with an emission control device for a combustion engine aftertreatment device according to the appended claims. Furthermore, the objects mentioned herein are also achieved with a combustion engine aftertreatment device according to the appended claims. Furthermore, the objects mentioned herein are also achieved with a vehicle according to the appended claims. Furthermore, the objects mentioned herein are also achieved with a method of disassembling an emission control device according to the appended claims.

According to an aspect of the invention, an emission control device for a combustion engine aftertreatment device is provided. The emission control device includes a housing configured to house an emission control substrate. At least one first opening is disposed in the housing, the at least one first opening configured to receive a threaded assembly member. The threaded assembly member is configured for assembling the emission control device in a cavity of the aftertreatment device. The emission control device also includes at least one second opening in the housing. The at least one second opening is provided with threads and is configured to receive a threaded removal element. The threaded removal element is configured to remove the emission control device from the cavity of the aftertreatment device.

According to another aspect of the invention, a combustion engine aftertreatment device is provided. The combustion engine aftertreatment device comprises an emission control device as disclosed herein.

According to another aspect of the present invention, a vehicle is provided. The vehicle includes a combustion engine aftertreatment device as disclosed herein.

With such an emission control device, a combustion engine aftertreatment device and a vehicle, the need for special adapter tools for assembling and disassembling the emission control device in and from the cavity of the aftertreatment device is eliminated. Further, when the emission control substrate becomes clogged or saturated with time due to the accumulation of particulate matter and other substances on the emission control substrate, the emission control substrate of the emission control device can be easily cleaned or replaced. Disassembling and assembling the emission control substrate from and to the combustion engine aftertreatment device will be easy and time-saving, since the housing configured for accommodating the emission control substrate may be disassembled and assembled by using threaded assembly and disassembly elements. According to an example, the assembly and disassembly elements may be threaded pins, screws and/or nuts. Thus, due to the configuration of the emission control device and the use of threaded make-up and break-down elements rather than specially adapted tools, the entire maintenance process of the emission control substrate may be very efficient and economical.

According to another aspect of the invention, a method for detaching an emission control device from a combustion engine aftertreatment device is provided. The emission control device includes a housing configured to house an emission control substrate. At least one first opening is disposed in the housing, the at least one first opening configured to receive a threaded assembly member. At least one threaded second opening in the housing is configured to receive a threaded removal element. The method comprises the following steps: positioning the threaded removal element in the at least one threaded second opening; rotating the detachment element such that the detachment element moves in an axial direction toward an abutment surface of the aftertreatment device; and applying a torque on the release element such that the threads of the release element apply a force to the threads of the second opening in the direction of the central axis of the second opening, the axial force pushing the emission control device out of the cavity of the aftertreatment device.

By this method of removing an emission control device from a combustion engine aftertreatment device, the need for a special tool for removing the emission control device from the combustion engine aftertreatment device is eliminated. Further, the emission control substrate of the emission control device can be easily cleaned and replaced. Due to the configuration of the emission control device and the use of threaded make-up and break-down elements rather than specially adapted tools, the entire maintenance process of the emission control substrate may be very efficient and economical.

Other objects, advantages and novel features of the invention will become apparent to those skilled in the art from the following detailed description and by practice of the invention. Although the invention is described below, it should be apparent that the invention may not be limited to the details specifically described. Those skilled in the art, having the benefit of the teachings herein, will recognize additional applications, modifications, and incorporation within the scope of the present invention.

Drawings

For a more complete understanding of the present disclosure, as well as for further objects and advantages thereof, reference is made to the following detailed description read in conjunction with the accompanying drawings, wherein like reference numerals represent like items in the various figures, and in which:

FIG. 1 schematically shows a side view of a vehicle having a combustion engine aftertreatment device including an emission control device according to an example;

FIG. 2 schematically shows a view from the perspective of a combustion engine aftertreatment device according to an example;

fig. 3a schematically shows a view from the perspective of a combustion engine aftertreatment device according to an example;

fig. 3b schematically shows a view from the perspective of a combustion engine aftertreatment device according to an example;

FIG. 4 schematically shows a side view of a combustion engine aftertreatment device according to an example;

FIG. 5 schematically shows a cross-sectional view along line A-A in FIG. 4;

FIGS. 6 and 7 schematically illustrate cross-sectional views along line B-B in FIG. 4;

FIG. 8 schematically illustrates a view from the perspective of an emissions control device according to an example; and

fig. 9 shows a flowchart of a method for dismounting an emission control device from a combustion engine aftertreatment device according to an embodiment.

Detailed Description

The emission control device according to the present disclosure may be arranged in all types of combustion engine aftertreatment devices. The combustion engine aftertreatment device may be a muffler provided with an emission control device. Alternatively, the emission control device may be provided in a separate unit in the aftertreatment device, which unit is separate from the muffler. The emission control device eliminates the need for special adapter tools for assembling and disassembling the emission control device in the cavity of the aftertreatment device. Such emission control devices may contain an emission control substrate that can be easily cleaned or replaced. The emission control device may include a sealing element that applies a radially directed force to the emission control device during assembly and disassembly of the emission control device in the cavity of the aftertreatment device. However, even if radially directed forces are emitted from the sealing element, it is possible to assemble and disassemble the emission control device in the cavity of the aftertreatment device without a specially adapted tool. The sealing element of the emission control device may be inspected when the emission control device is assembled in the cavity of the aftertreatment device.

According to the present disclosure, an emission control device for a combustion engine aftertreatment device is provided. The emission control device includes a housing configured to house an emission control substrate. At least one first opening is disposed in the housing, the at least one first opening configured to receive a threaded assembly member. The threaded assembly member is configured for assembling the emission control device in a cavity of the aftertreatment device. The emission control device also includes at least one second opening in the housing. The at least one second opening is provided with threads and is configured to receive a threaded removal element. The threaded removal element is configured to remove the emission control device from the cavity of the aftertreatment device.

The emission control device may be part of an exhaust system of a combustion engine, such as an otto engine or a diesel engine. The combustion engine may be arranged in different types of machines, such as vehicles. The vehicle may be a heavy vehicle, such as a bus, truck, or the like. The emission control device may clean exhaust gas and particulate matter from the combustion engine. The emission control device may be releasably connected to a combustion engine aftertreatment device, which may be a muffler in an exhaust system of the combustion engine. However, the emission control device may be directly connected to a pipe of the exhaust system or a unit in the exhaust system, which is separate from the muffler.

The emission control device includes a housing, which may have a cylindrical configuration. However, the housing may have a different configuration than the cylindrical configuration. According to an example, the housing is provided with an inlet opening for exhaust gases and particulate matter originating from the combustion engine. In addition, the housing is provided with outlet openings for exhaust gases and particulate matter originating from the combustion engine. Thus, the housing is configured to direct the exhaust gas and particulate stream from the inlet opening towards the outlet opening.

The discharge control device includes a discharge control substrate. The emission control substrate may be configured and adapted for the type of emission to be processed. The emission control substrate may be a particulate filter that separates particulates from exhaust gas. The particulate matter may be caused by incomplete combustion of diesel fuel in the diesel engine. The particulate matter may be soot particles, such as black carbon. The particulate filter may be made of ceramic materials, for example, cordierite filters and silicon carbide filters. However, other materials are also possible, such as metal fiber filters. The emission control substrate may alternatively be configured to convert and clean toxic gases and pollutants in exhaust gas from the combustion engine. Such a configuration of the emission control substrate may be a catalytic converter for reducing nitrogen oxides in the exhaust gas.

The housing is provided with at least one first opening configured to receive a threaded assembly member. Depending on the size and shape of the housing, a plurality of first openings may be arranged in the housing. The threaded assembly element may be configured to connect and attach the housing of the emission control device to the aftertreatment device. Additionally, the threaded assembly member may be configured to assemble the housing of the emission control device to the aftertreatment device. The threads of the threaded makeup elements may be of any type and of any shape.

The aftertreatment device may be provided with a cavity configured to receive the emission control device. The cavity may have a size and shape corresponding to a size and shape of a housing of the emission control device.

The housing is provided with at least one second opening, which may be provided with a thread. The thread may be arranged in the at least one second opening. Alternatively or in combination, a threaded nut may be arranged at the at least one second opening. The threaded nut may for example be welded at the at least one second opening. The at least one second opening is configured to receive a threaded removal element. Since the emission control substrate of the emission control device may need to be cleaned or replaced, a threaded removal element may be used to remove the emission control device from the aftertreatment device. Depending on the size and shape of the housing, a plurality of second openings may be arranged in the housing. The thread of the at least one second opening may be of any type and any shape.

According to an example, the housing comprises a flange portion, wherein the at least one first opening and the at least one second opening are arranged in the flange portion.

The flange portion may have a circular shape. The flange portion extends outside of a housing of the emission control device. The housing may have a cylindrical shape with a diameter smaller than the diameter of the flange. The flange portion abuts an outer surface of the aftertreatment device when the emission control device is received in the cavity of the aftertreatment device. The emission control device is secured to the aftertreatment device by means of a threaded assembly member received in at least one first opening disposed in the flange portion. The flange portion is designed to withstand forces acting on the flange portion when assembling and disassembling the emission control device in the aftertreatment device. When the emission control device is assembled in the aftertreatment device, a force from the threaded assembly member acts on the flange portion in the direction of the abutment surface of the aftertreatment device. When the emission control device is removed from the aftertreatment device, a force from the threaded removal element acts on the flange portion in a direction away from the abutment surface of the aftertreatment device.

According to an example, the at least two first openings are evenly distributed in the flange portion.

When the flange portion has a circular shape, the at least two first openings may be arranged diametrically in the flange portion. The even distribution of the at least two first openings in the flange portion will evenly distribute the assembly force from the threaded assembly member when the emission control device is assembled and secured in the aftertreatment device.

According to an example, the at least two second openings are evenly distributed in the flange portion.

When the flange portion has a circular shape, the at least two second openings may be arranged diametrically in the flange portion. The even distribution of the at least two second openings in the flange portion will evenly distribute the removal force from the threaded removal element when removing the emission control device from the aftertreatment device.

According to an example, the flange portion is releasably arranged on the housing.

The flange portion may be connected to and separated from a housing of the emission control device. This detachable configuration of the flange portion may facilitate completion of the emission control device.

According to an example, the flange portion is an edge of a cover of the housing, the cover being releasably arranged on the housing.

Detaching the cover from the housing may allow access to the emissions control substrate within the housing. Furthermore, if the sealing element is arranged between the housing and the aftertreatment device, the sealing element can be inspected when the cover is detached from the housing. The cover may be releasably disposed on the housing by fasteners.

According to an example, the housing comprises at least one sealing element provided with a radially directed sealing surface.

The radially directed sealing surface of the at least one sealing element ensures that the exhaust gas and particle stream will flow through the emission control device without escaping from the aftertreatment device before exiting the exhaust system through the exhaust pipe of the exhaust system. The radially directed sealing surface of the at least one sealing element is arranged in contact with a circumferential surface in the cavity of the aftertreatment device.

According to an example, the at least one sealing element is configured to be compressed in a radial direction when assembling the emission control device in the aftertreatment device.

Compressing the at least one sealing element in a radial direction generates a radially directed force, which complicates the assembly of the emission control device in the cavity of the aftertreatment device. In order to push the housing of the emission control device into the cavity of the aftertreatment device, an axial force must be exerted on the emission control device. In the opposite case, the radially directed force from the at least one sealing element will also complicate the disassembly of the emission control device from the cavity of the aftertreatment device, since an axial force has to be applied to the emission control device in a direction opposite to the direction of the force when assembling the emission control device in the cavity. However, the at least one first and second opening in the housing of the emission control device makes it possible to assemble and disassemble the emission control device in the cavity of the aftertreatment device without specially adapted tools.

According to an example, the housing comprises a suspension element configured to be compressed in a radial direction when assembling the emission control device in the aftertreatment device.

The suspension elements may be wire mesh arranged circumferentially around the housing of the emission control device. During assembly of the housing in the cavity of the aftertreatment device, the suspension element may be compressed similar to the at least one sealing element. Compression of the suspension elements may increase the axial force acting on the housing when assembling and disassembling the housing in the cavity of the aftertreatment device. The suspension member centers the housing within the cavity and securing the at least one sealing member prevents exhaust gas from passing through a sealing surface of the sealing member.

According to an example, the housing is a filter housing configured for accommodating a particulate filter substrate.

The housing may include a particulate filter substrate that separates particulates from the exhaust gas. The particulate matter in the exhaust gas may be caused by incomplete combustion of diesel fuel in the diesel engine. The particulate matter may be soot particles, such as black carbon. The particulate filter may be made of ceramic materials, for example, cordierite filters and silicon carbide filters. However, other materials are also possible, such as metal fiber filters.

According to the present disclosure, a combustion engine aftertreatment device is provided. The combustion engine aftertreatment device includes the emission control device disclosed herein.

The aftertreatment device may be combined with a muffler. The aftertreatment device may be provided with a cavity configured to receive the emission control device. The cavity may have a size and shape corresponding to a size and shape of a housing of the emission control device. The aftertreatment device may be configured to treat several types of matter and specific matter in the emissions from the combustion engine.

According to an example, the threaded assembly element comprises at least one threaded pin of the aftertreatment device and at least one nut configured to be screwed on the threaded pin.

The threaded pin of the aftertreatment device is configured to be received in the at least one first opening of the housing of the emission control device. When screwing the nut on the threaded pin received in the at least one first opening of the housing, an axial force will be exerted on the housing, which force pushes the housing into the cavity. The threads of the threaded makeup elements may be of any type and of any shape.

According to an example, the threaded assembly element comprises at least one screw configured to be screwed into a threaded hole of the aftertreatment device.

The screw includes threads and is configured to be received in at least one first opening of a housing of the emission control device. When screwing the screw received in the at least one first opening of the housing into the threaded hole of the aftertreatment device, an axial force will be exerted on the housing, which pushes the housing into the cavity. The threads of the threaded makeup elements may be of any type and of any shape.

According to an example, the threaded assembly element is a fastener element configured to attach the emission control device to an aftertreatment device.

The fastener element is configured to be received in at least one first opening of a housing of an emissions control device. The fastener element secures and attaches the emission control device to the aftertreatment device when the fastener element is received in the at least one first opening of the housing and secured to the aftertreatment device.

According to an example, the threaded dismounting element comprises a screw. The screw is configured to be positioned in the at least one threaded second opening. When the screw is rotated, the dismounting element is moved in the axial direction towards the abutment surface of the aftertreatment device. For example, when torque is applied to the screw from the screwdriver, the threads of the screw will apply a force to the threads of the second opening in the direction of the central axis of the second opening, such that the axial force pushes the emissions control device out of the cavity of the aftertreatment device. The threads of the threaded dismounting element may be of any type and any shape.

According to the present disclosure, a vehicle is provided. The vehicle includes a combustion engine aftertreatment apparatus as disclosed herein.

Combustion engine aftertreatment devices are suitable for use on all types of vehicles including combustion engines and may therefore relate to heavy vehicles such as buses, trucks and the like that may be used on public roads and highways.

According to the present disclosure, a method for detaching an emission control device from a combustion engine aftertreatment device is provided. The emission control device includes a housing configured to house an emission control substrate. At least one first opening is disposed in the housing, the at least one first opening configured to receive a threaded assembly member. At least one threaded second opening in the housing is configured to receive a threaded removal element. The method comprises the following steps: positioning the threaded removal element in the at least one threaded second opening; rotating the detachment element such that the detachment element moves in an axial direction toward an abutment surface of the aftertreatment device; and applying a torque on the release element such that the threads of the release element apply a force to the threads of the second opening in the direction of the central axis of the second opening, the axial force pushing the emission control device out of the cavity of the aftertreatment device.

The emission control device may be part of an exhaust system of a combustion engine, such as an otto engine or a diesel engine. The combustion engine may be arranged in different types of machines, such as vehicles. The vehicle may be a heavy vehicle, such as a bus, truck, or the like. The emission control device may clean exhaust gas and particulate matter from the combustion engine. The emission control device may be releasably connected to a combustion engine aftertreatment device, which may be a muffler in an exhaust system of the combustion engine. However, the emission control device may be directly connected to a pipe of the exhaust system or a unit in the exhaust system, which is separate from the muffler.

The emission control device includes a housing, which may have a cylindrical configuration. However, the housing may have a different configuration than the cylindrical configuration. According to an example, the housing is provided with an inlet opening for exhaust gases and particulate matter originating from the combustion engine. In addition, the housing is provided with outlet openings for exhaust gases and particulate matter originating from the combustion engine. Thus, the housing is configured to direct the exhaust gas and particulate stream from the inlet opening towards the outlet opening.

The discharge control device includes a discharge control substrate. The emission control substrate may be configured and adapted for the type of emission to be processed. The emission control substrate may be a particulate filter that separates particulates from exhaust gas. The particulate matter may be caused by incomplete combustion of diesel fuel in the diesel engine. The particulate matter may be soot particles, such as black carbon. The particulate filter may be made of ceramic materials, for example, cordierite filters and silicon carbide filters. However, other materials are also possible, such as metal fiber filters. The emission control substrate may alternatively be configured to convert and clean toxic gases and pollutants in exhaust gas from the combustion engine. Such a configuration of the emission control substrate may be a catalytic converter for reducing nitrogen oxides in the exhaust gas.

The housing is provided with at least one first opening configured to receive a threaded assembly member. Depending on the size and shape of the housing, a plurality of first openings may be arranged in the housing. The threaded assembly element may be configured to connect and attach the housing of the emission control device to the aftertreatment device. Additionally, the threaded assembly member may be configured to assemble the housing of the emission control device to the aftertreatment device. The threads of the threaded makeup elements may be of any type and of any shape.

The aftertreatment device may be provided with a cavity configured to receive the emission control device. The cavity may have a size and shape corresponding to a size and shape of a housing of the emission control device.

The housing is provided with at least one second opening, which may be provided with a thread. The thread may be arranged in the at least one second opening. Alternatively or in combination, a threaded nut may be arranged at the at least one second opening. The threaded nut may for example be welded at the at least one second opening. The at least one second opening is configured to receive a threaded removal element. Since the emission control substrate of the emission control device may need to be cleaned or replaced, a threaded removal element may be used to remove the emission control device from the aftertreatment device. Depending on the size and shape of the housing, a plurality of second openings may be arranged in the housing. The thread of the at least one second opening may be of any type and any shape.

Positioning the threaded removal element in the at least one threaded second opening includes mating threads of the threaded removal element with threads of the at least one threaded second opening. Thus, the threads of the threaded removal element should be the same size and configuration as the threads of the at least one threaded second opening. Rotating the dismounting element after mating the threads of the threaded dismounting element with the threads of the at least one threaded second opening will move the dismounting element in the axial direction. This rotation of the dismounting element may be performed manually or by a machine tool. Moving the dismounting element in the axial direction will result in that the dismounting element will reach the abutment surface of the aftertreatment device. When a torque is applied on the dismounting element abutting the abutment surface of the aftertreatment device, the thread of the dismounting element will apply a force on the thread of the second opening in the direction of the centre axis of the second opening. The axial force may push the emission control device out of the cavity of the aftertreatment device.

The threaded removal element may comprise a screw. The screw may be configured to be positioned in the at least one threaded second opening. When the screw is rotated, the screw will move in the axial direction towards the abutment surface of the aftertreatment device. For example, when torque is applied to the screw from the screwdriver, the threads of the screw will apply a force to the threads of the second opening in the direction of the central axis of the second opening, such that the axial force pushes the emissions control device out of the cavity of the aftertreatment device.

The thread may be arranged in the at least one second opening. Alternatively or in combination, a threaded nut may be arranged at the at least one second opening. The threaded nut may for example be welded at the at least one second opening.

According to an example, the method comprises the further step of: the threaded makeup element is removed prior to applying torque to the breakout element.

The threaded assembly element may be a fastener element configured to secure and attach the emission control device to the aftertreatment device. The fastener element is configured to be received in at least one first opening of a housing of an emissions control device. The fastener element secures and attaches the emission control device to the aftertreatment device when the fastener element is received in the at least one first opening of the housing and secured to the aftertreatment device. To disassemble the emission control device from the aftertreatment device, the threaded makeup element should be removed prior to applying torque to the disassembled element.

The threaded assembly element may include at least one threaded pin of the aftertreatment device and at least one nut configured to be threaded onto the threaded pin. Alternatively, the threaded assembly element may comprise at least one screw configured to be screwed into a threaded hole of the aftertreatment device.

The disclosure will now be further illustrated with reference to the accompanying drawings, by way of example.

Fig. 1 schematically shows a side view of a vehicle 1 with a combustion engine aftertreatment device 2 comprising an emission control device 4 according to an example. The vehicle 1 comprises a combustion engine 6, for example an otto engine or a diesel engine. An exhaust system 8 is connected to the combustion engine 6. The exhaust system 8 includes the aftertreatment device 2. The exhaust system 8 further comprises a pipe 10 connecting the combustion engine 6 to an inlet 12 of the aftertreatment device 2. The aftertreatment device 2 includes an outlet 14 to which an exhaust pipe 16 is connected. The emission control device 4 of the combustion engine aftertreatment device 2 is applicable on all types of vehicles 1 provided with a combustion engine and may thus relate to heavy vehicles such as buses, trucks, etc. which may be used on public roads and highways.

Fig. 2 schematically shows a view from the perspective of a combustion engine aftertreatment device 2 according to an example. Aftertreatment device 2 may be combined with muffler 18. The aftertreatment device 2 may be provided with a cavity 20 configured to receive the emission control device 4. In fig. 2, the emission control device 4 is assembled in the aftertreatment device 2.

Fig. 3a schematically shows a view from the perspective of a combustion engine aftertreatment device 2 according to an example. In fig. 3a, the emission control device 4 is arranged at a distance from the aftertreatment device 2. Only a part of the aftertreatment device 2 is shown in fig. 3 a. The emission control device 4 includes a housing 22. The first opening 24 is disposed in the housing 22. The first opening 24 is configured to receive a threaded assembly member 26. According to fig. 3a, the threaded assembly element 26 is a threaded pin 28 arranged in a threaded hole 31 of the aftertreatment device 2. The threaded assembly member 26 is configured for assembling the emission control device 4 in the cavity 20 of the aftertreatment device 2. The emission control device 4 further comprises a second opening 30 in the housing 22. The second opening 30 is provided with a thread 32, which will be explained further below.

Fig. 3b schematically shows a view from the perspective of the combustion engine aftertreatment device 2 according to an example. In fig. 3b, the emission control device 4 is arranged in the cavity 20 of the aftertreatment device 2. Only a part of the aftertreatment device 2 is shown in fig. 3 b. Threaded assembly element 26 serves as a fastener element configured to attach and secure emission control device 4 to aftertreatment device 2. A threaded assembly member 26 is received in the first opening 24 of the housing 22 and is secured to the aftertreatment device 2 by a nut 29.

Fig. 4 schematically shows a side view of a combustion engine aftertreatment device 2 according to an example. The housing 22 includes a flange portion 34, wherein the first opening 24 and the second opening 30 are disposed in the flange portion 34. The first openings 24 and the second openings 30 are evenly distributed in the flange portion 34. The flange portion 34 may be releasably disposed on the housing 22. The flange portion 34 is an edge 36 of a cover 38 of the housing 22. The cover 38 may be releasably disposed on the housing by fasteners 40.

Fig. 5 schematically shows a cross-sectional view along the line V-V in fig. 4. In fig. 5, the emission control device 4 is arranged in a chamber 20 of the aftertreatment device 2. The housing 22 is provided with an inlet opening 42 (fig. 1) for exhaust gases and particulate matter originating from the combustion engine 6. In addition, the housing 22 is provided with an outlet opening 44 for exhaust gases and particulate matter originating from the combustion engine 6. Accordingly, the housing 22 is configured to direct the flow of exhaust gas and particulates from the inlet opening 42 toward the outlet opening 44. Arrows 46 in fig. 5 indicate exhaust gas and particulate flow. The housing 22 is configured to house an emissions control substrate 48. Housing 22 may be a filter housing 50 configured to house a particulate filter substrate 52. The exhaust and particulate streams are directed through an emissions control substrate 48.

The housing comprises two sealing elements 54 provided with radially directed sealing surfaces 56. A radially directed sealing surface 56 of the sealing element 54 is arranged in contact with a circumferential surface 58 in the cavity 20 of the aftertreatment device 2. When the emission control device 4 is assembled in the aftertreatment device 2, the sealing element 54 is compressed in the radial direction. Therefore, when the emission control device 4 is assembled in the aftertreatment device 2, the sealing element 54 is compressed in the radial direction.

The housing 22 comprises a suspension element 60 configured to be compressed in a radial direction when assembling the emission control device 4 in the aftertreatment device 2. Therefore, when the emission control device 4 is assembled in the aftertreatment device 2, the suspension element 60 is compressed in the radial direction. In fig. 5, a threaded assembly member 26 attaches and secures emission control device 4 to aftertreatment device 2.

Fig. 6 and 7 schematically show cross-sectional views along the line B-B in fig. 4. In fig. 6, the threaded removal element 62 has been positioned in the threaded second opening 30. Thus, the second opening 30 is configured to receive a threaded removal element 62. The threaded removal element 62 is configured to remove the emission control device 4 from the cavity 20 of the aftertreatment device 2. The threaded dismounting element 62 has been rotated in fig. 6, so that the dismounting element 62 has been moved in axial direction towards the abutment surface 64 of the aftertreatment apparatus 2.

In fig. 7, a torque has been applied on the dismounting element 62, so that the thread 66 of the dismounting element 62 has exerted a force on the thread 32 of the second opening 30 in the direction of the centre axis 70 of the second opening 30, which axial force has pushed the emission control device 4 out of the cavity 20 of the aftertreatment device 2. The threaded makeup element 26 (fig. 5) has been removed prior to applying torque on the breakout element 62.

Fig. 8 schematically shows a view from the perspective of the emission control device 4 according to an example. The cover 38 of the housing 22 has been released from the housing 22. The housing 22 is provided with a threaded pin 72. A corresponding bore 74 is configured and arranged in the cap 38 for receiving the threaded pin 72. The cover 38 may be releasably disposed on the housing 22 by other types of fasteners.

Fig. 9 shows a flowchart of a method for dismounting an emission control device 4 from a combustion engine aftertreatment device 2 according to an embodiment. The emission control device 4 is shown in fig. 1-8 and comprises: a housing 22 configured to house an emission control substrate 48; a first opening 24 in the housing 22 configured to receive a threaded assembly member 26; and a threaded second opening 30 in the housing 22 configured to receive a threaded removal element 62. The method comprises the following steps: positioning s101 the threaded dismounting element 66 in the at least one threaded second opening 30; rotating s102 the dismounting element 62 such that the dismounting element 62 is moved in the axial direction towards the abutment surface 64 of the aftertreatment apparatus 2; and a torque is applied s103 on the dismounting element 62 such that the thread 66 of the dismounting element 62 exerts a force on the thread 32 of the second opening 30 in the direction of the centre axis 70 of the second opening 30, said axial force pushing the emission control device 4 out of the cavity 20 of the aftertreatment device 2.

The method includes the further step of removing s104 the threaded makeup element 26 prior to applying torque to the breakout element 62.

The foregoing description of the embodiments has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the examples to the variations described. Many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to understand the embodiments for various embodiments with various modifications as are suited to the particular use contemplated. The components and features specified above may be combined within the framework of the embodiments between the different embodiments specified.