Dispenser application system, components and procedures

Abstract

Selective catalytic reduction system (100), comprising: a dispenser mounting system with: a mounting plate (120) with an opening (123) in a surface (127) of the mounting plate (120), a plurality of mounting brackets (121) coupled to the mounting plate (120), wherein the plurality of mounting brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of mounting brackets (121) is spaced away from the mounting plate (120), and each of the plurality of mounting brackets (121) includes an opening (128) in the part that is spaced away from the mounting plate (120), and a plurality of fasteners (122), each having a fastening head (136) and a fastening shaft (137) positioned in the openings (128) of the plurality of fastening brackets (121), such that each fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fastening bracket (121) that is spaced from the mounting plate (120), and each fastening shaft (137) extends from a respective opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120); and a dispenser (110) coupled to the dispenser mounting system via the plurality of fixings (122), wherein the fixing shafts (137) extend through openings in legs (111) of the dispenser (110), wherein an injector opening of the dispenser is aligned with the opening (123) in the mounting plate (120).

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] The present application refers to and claims priority from the provisional US patent application No. 61 / 948,857, filed on March 6, 2014, which is incorporated in its entirety by reference herein. TECHNICAL AREA

[0002] The present application relates generally to the field of exhaust gas control systems. In particular, the present application relates to systems for treating exhaust gases with a reducing fluid supplied by means of an injection system or a metering system. GENERAL STATE OF THE ART

[0003] Increasingly stringent emissions standards require treatment systems to prevent or reduce the release of harmful emissions into the atmosphere as byproducts of combustion processes in systems such as diesel engines. Systems that reduce harmful emissions by treating fluids, for example, gases, released by an engine, such as a diesel engine, are typically subjected to high heat and / or pressure as the exhaust gases are expelled through the exhaust system. Harmful exhaust emission treatment systems often include a catalyst and a metering system that injects a fluid, for example, a specific reducing agent, into the exhaust stream to reduce harmful emissions such as nitrogen oxides (NOx). x) to chemically reduce this catalyst. Such dosing systems can include a variety of electrical and mechanical components that are prone to failure when exposed to excessive heat.

[0004] Furthermore, the location of these exhaust components in relation to the engine on the end-user device presents a number of challenges in terms of mechanical durability (e.g. random vibrations, shocks), ease of maintenance, trouble-free cooling, etc. US 2014 / 0363357A1 relates to a system for supplying diesel exhaust fluid or another reducing agent to an injector for delivery to an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally insulates the diesel exhaust fluid from the exhaust gas temperatures. A method for supplying diesel exhaust fluid is also described for nozzle cooling prior to injector operation for emission reduction. US 5,524,860 A relates to a universal mounting bracket comprising a plate element; means in the plate element for attaching the mounting bracket to a first device; and adjustable means in the plate element for attaching the mounting bracket to a second device, the second mounting device having any one of a number of mounting patterns. SUMMARY

[0005] Various embodiments provide a selective catalytic reduction system that includes a dosing attachment system. The dosing attachment system comprises a mounting plate with an opening in one surface of the mounting plate and a plurality of mounting brackets connected to the mounting plate. In certain embodiments, each mounting subassembly may comprise a fastener and a bracket, the bracket being configured to receive the fastener. The mounting brackets are positioned around a peripheral portion of the opening. The mounting brackets include an opening, which, in certain embodiments, may be slotted, for inserting the fastener. The opening is raised from the surface of the mounting plate.The dispenser mounting system also comprises a plurality of fasteners, each with a fastening head and a fastening shaft located in the opening of the mounting bracket, such that the fastening head is positioned between a portion of the mounting bracket and the surface of the mounting plate. The fastening shaft extends from the slot in a direction that has an orthogonal component with respect to the surface of the mounting plate. The dispenser mounting system may also include a thermal insulator which, in certain embodiments, is coupled to the plurality of fasteners at the fastening shaft. The selective catalytic reduction system includes a dispenser coupled to the dispenser mounting system via the plurality of fasteners, the fastening shafts extending through openings in legs or the housing of the dispenser.The selective catalytic reduction system further includes a multitude of nuts coupled to the mounting shafts, such that the openings in the legs of the dispenser are located between the nuts and the heat insulator, with the injector opening of the dispenser aligned with the opening in the mounting plate.

[0006] In certain embodiments, the fastening is coupled to a mounting bracket, maintaining an air gap between the head of the fastening and the surface of the mounting plate. In certain embodiments, the raised openings can comprise a plurality of different sides with a shape that corresponds at least partially to the shape of the head of the fastening. According to certain embodiments, the metering device mounting system is operationally coupled to an exhaust muffler at an inlet opening in the muffler. In certain embodiments, the system can include a spacer positioned between the nuts and the opening in the metering device leg. The thermal insulator is made of a material with low thermal conductivity, e.g., mica, in certain embodiments.

[0007] Further embodiments provide a dispenser mounting system comprising a mounting plate with an opening and a plurality of mounting brackets coupled to the mounting plate. The mounting brackets are positioned around a peripheral portion of the opening and encompass an opening that is slightly raised from the surface of the mounting area. The dispenser mounting system further comprises a plurality of fasteners with a fastening head and a fastening shaft located in the openings of the mounting bracket, such that the fastening head is positioned between the mounting bracket and the surface of the mounting plate. The fastening shaft extends from the opening in a direction that has a substantially orthogonal component with respect to the surface of the mounting plate.The dispenser mounting system also includes a thermal insulator that is coupled to the numerous fixings on the mounting shaft.

[0008] In various embodiments, the raised openings can comprise a variety of different sides with a shape that corresponds at least partially to a shape of the head of the fastening.

[0009] Further embodiments provide a method for coupling a dispensing system with a dispenser mounting system. The method comprises coupling a plurality of fasteners to a plurality of mounting brackets, which are coupled to a surface of a mounting plate. The mounting plate includes an opening in its surface. The plurality of mounting brackets are positioned around a peripheral portion of the opening. The mounting brackets encompass an opening that is raised from a surface of the mounting plate. In certain embodiments, the opening may include a slot. A plurality of fasteners, each with a mounting head and a mounting shaft, are coupled to the mounting brackets such that the mounting head is positioned between a portion of the mounting bracket and the surface of the mounting plate.The mounting shaft extends from the opening in a direction that has an orthogonal component with respect to the surface of the mounting plate. A thermal insulator is coupled to the multiple fixings on the mounting shaft, and a dispenser is coupled to the multiple fixings such that the mounting shafts extend over the openings in the dispenser legs, and an injector opening of the dispenser is aligned with the opening in the mounting plate. Multiple nuts are coupled to the mounting shafts such that the openings in the dispenser legs are located between the nuts and the gasket, maintaining a gap between the fixing head and the surface of the mounting plate.

[0010] In certain embodiments, the method further comprises coupling the mounting plate to an exhaust muffler housing. Other embodiments may include coupling the mounting plate to an exhaust pipe upstream of the selective catalytic reduction device. Furthermore, according to certain embodiments, the method may include coupling a plurality of spacers to the plurality of fasteners, such that a spacer is arranged between the nut and the opening in the metering leg.

[0011] The inventors know that the implementation and use of various embodiments can lead to advantageous dispensing systems, components, and methods that can be implemented in a way that reduces heat-related disturbances and improves reliability and maintainability. It should be noted that all combinations of the foregoing concepts and additional concepts discussed in more detail below (provided such concepts are not mutually exclusive) are considered to be part of the subject matter of the invention disclosed herein. In particular, all combinations of the claimed subject matter appearing at the end of this disclosure are considered to be part of the subject matter of the invention disclosed herein.It should also be noted that any terminology explicitly used herein, which may also appear in revelations included by reference, should be assigned a meaning that corresponds to the specific concepts revealed herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Experts know that the drawings are primarily for illustrative purposes and are not intended to limit the scope of the subject matter described herein. The drawings are not necessarily to scale; in some cases, various aspects of the subject matter disclosed herein may be exaggerated or enlarged in the drawings to facilitate understanding of the various features. In the drawings, similar reference symbols refer to similar features (e.g., functionally similar and / or structurally similar elements). Fig. Figure 1 is a front view of an exhaust gas component including a dosing system coupled to it according to exemplary embodiments. Fig. Figure 2A is a perspective view of a dispenser mounting system according to exemplary embodiments. Fig. 2B is a profile cross-section image of the dispenser mounting system made of Fig. 2A. Fig. Figure 3 is a schematic representation of a process for connecting a dosing system to a dosing attachment system according to exemplary embodiments. Fig. Figure 4 is a perspective view of a dosing system coupled with a dosing mounting system according to exemplary embodiments. Fig. Figure 5 illustrates a test system for a dosing system implemented according to exemplary embodiments. Fig. Figure 6 shows a thermal analysis of a dosing system that underwent a heat test via the test system of Fig. 5 is exposed according to exemplary embodiments. Fig. Figure 7 provides a graph illustrating specific temperatures to which components of the metering system are exposed in response to specific exhaust gas temperatures to which the muffler is exposed.

[0013] The features and advantages of the concepts of the invention disclosed herein will become apparent from the following detailed description when considered together with the drawings. DETAILED DESCRIPTION

[0014] Below are more detailed descriptions of various related concepts and embodiments of the systems of the invention and methods for implementing a selective catalytic reduction system, including a dosing system. It should be noted that the various concepts presented above and discussed in more detail below can be implemented in a variety of ways, as the disclosed concepts are not limited to a specific implementation method. Examples of specific implementations and applications are provided primarily for illustrative purposes.

[0015] Fig. Figure 1 is a front view of an exhaust gas component including a dosing system coupled to it according to exemplary embodiments. Fig. Figure 1 illustrates a selective catalytic reduction (SCR) system 100, which can be connected to an exhaust pipe for receiving exhaust fluid from an engine, e.g., a diesel engine. An exhaust pipe extending from an exhaust manifold can be connected directly or indirectly to an inlet port 101 on the SCR system 100 in the decomposition section 104. The exhaust pipe carries gases emitted from an engine, e.g., a diesel engine, as a consequence and byproduct of combustion in the engine. The SCR system 100 can also include muffler components to modify the sound characteristics of the emitted gases before the gases (and / or liquid) are expelled for release into the atmosphere through the outlet port 102, located in the substrate section 105 of the SCR system 100.The SCR system 100 can be mounted at a considerable distance (several meters) from the engine and can be moved into position using bracket 103. Untreated exhaust fluids can produce nitrogen oxides (NOx). x ) in quantities exceeding the permissible limits allowed by exhaust emission standards. The temperature of the exhaust fluid passing through the SCR system 100 can range from approximately 50 degrees Celsius to approximately 650 degrees Celsius, and the pressure can be on the order of approximately 5000 Pascals. As shown in the illustrated embodiment, a metering system 110 can be attached to an exhaust component, e.g., the SCR system 100, to control the concentration of byproducts such as NO. xto reduce the emissions and / or noise level before the exhaust gases are released into the atmosphere in a treatment process known as aftertreatment. Accordingly, the metering system 110 is exposed to high-temperature, high-pressure exhaust gases, both directly via, for example, an opening that allows the metering system 110 to inject a reducing agent or diesel exhaust fluid into the exhaust flow, and the system is exposed to heat conducted through the SCR system 100, which is made of metal or other highly thermally conductive materials. The metering system 110 is also exposed to vibrations received from the SCR system 100, which are transmitted through the engine and / or the vehicle and can be very strong in a high-performance diesel engine application in a vehicle designed for heavy-duty use and / or off-road applications.

[0016] Fig. Figure 2A is a perspective view of a dispenser mounting system according to exemplary embodiments. Fig. Figure 2B is a profile section of the dispenser mounting system 2A. The dispenser mounting system includes a mounting plate 120. The mounting plate 120 can be configured in a circular shape, as shown in the illustrated embodiment, but can also be embodied in other shapes. The mounting plate 120 is generally flat, but in various embodiments it can also be contoured to facilitate snapping into an SCR system. The mounting plate 120 can be coupled to the SCR system 100 by welding. Other options for coupling the mounting plate 120 to the SCR system 100 can be used in certain embodiments, including, among others, coupling by fasteners or clamps. In certain embodiments, the mounting plate 120 can be integrated into the SCR system 100.The mounting plate 120 includes an opening 123 that acts as a metering opening, allowing the injector to be aligned or snapped into place by the metering unit with an opening in the SCR system 100. In the illustrated embodiment, the opening 123 is located in the center of the mounting plate 120. The opening 123 may be raised, or the mounting plate may include other recesses to facilitate alignment or snapping of the mounting plate 120 with the corresponding raised surfaces on the SCR system 100. In various embodiments, the opening 123 may also be configured as a countersunk geometry for alignment or snapping with the metering injector. The mounting plate 120 includes a plurality of mounting brackets 121 for attaching fasteners 122. In certain embodiments, the fasteners 122 may include a bolt, and the mounting brackets 121 may be configured to receive the bolt.While the illustrated exemplary embodiment shows three mounting brackets 121, other embodiments may include more or fewer mounting brackets. As in . Fig. As shown in Figure 2, the mounting brackets 121 can be raised from an upper surface 127 of the mounting plate 120. The mounting brackets 121 can be coupled to the mounting plate 120 in a cantilevered manner (e.g., at the end) or they can be coupled along a length of the mounting brackets 121. The mounting brackets 121 configured in a raised structure allow the opening 128 in the mounting brackets 121 to be raised so that the head of the fasteners 122 can be positioned between a portion of the mounting bracket 121 and the upper surface 127, such that the fastening shaft 137 extends away from the upper surface 127, generally in an orthogonal direction with respect to the upper surface 127. In certain embodiments, the opening 128 can be configured as an elongated slot. As shown in the illustrated embodiment, the opening 128 can have a variety of different sides 129-132.The different sides 129-132 can be undercut or recessed in the bracket. The number and angle of the different sides in the opening 128 can be configured to correspond to the shape of at least part of the shape of a fastening head (e.g., the one shown in ). Fig. 3. Fastening 122), such that when the fastening is positioned in the opening, these sides prevent the fastening from rotating when it is secured by a coupling component such as a nut. In the illustrated embodiment, the opening 128 comprises the four distinct sides 129-132, which are configured to correspond to the four sides of a fastening head 136 configured in a hexagonal shape.

[0017] In addition to enabling the coupling of the fasteners 122 in such a way that the fastening shaft 137 extends away from the mounting bracket (e.g., vice versa), raised mounting brackets 121 can be raised such that the distance 134 between the surface 133 of the opening 128 of the mounting bracket 121 and the upper surface 127 is greater than the height of the fastening head 136. This distance 134, being greater than the height of the fastening head 136, allows the fastener 122 to couple with the mounting bracket, such that a gap 135 remains between the upper surface of the fastening head 136 and the upper surface 127 after the fastener is attached to the bracket, allowing the underside of the fastening head 136 (e.g., the surface at the intersection of the fastening head and fastening shaft) to engage in the surface 133 of the opening 128 of the mounting bracket 121.Reversing the fastening 122 and coupling the fastening 122 to the fastening bracket 121, so that a space or gap 135 is maintained between the fastening head 136 and the upper surface 127 of the mounting plate 120, enables a dispenser coupled to the fastening to maintain a significantly lower temperature, since the gap 135 allows an airflow between the fastening 122 and the mounting plate 120, which reduces the heat transfer from the mounting plate 120 to the fastenings 122 and thus the heat transfer to the dispenser system 110.

[0018] Fig. Figure 3 is a schematic representation of a process for connecting the dosing system to a dosing mounting system according to exemplary embodiments. In embodiment 301, the fasteners 122 are slidably positioned in the openings 128 in mounting brackets 121 in a reversed configuration, such that the fastening head is located between a raised portion of the bracket and the upper surface 127 of the mounting plate 120. In embodiment 302, a thermal insulator 124 is added. The thermal insulator 124 can, in various embodiments, be made of a material with low thermal conductivity, e.g., mica, which reduces heat transfer. The thermal insulator 124 includes an opening for coupling to the mounting brackets and an opening in the center that allows the dosing injector to be passed through it for alignment or engagement with the opening 123 in the mounting plate 120.In some embodiments, the mounting openings can be configured as a recess (i.e., not fully enclosed by thermal insulation material). In embodiment 303, the metering system 110 is coupled to the mounting plate by inserting the mountings 122 through the openings in the metering legs 111. The metering legs 111 extend from the metering housing, which contains the injector and other associated components, thus reducing harmful emissions in the exhaust gases transmitted via the SCR system 100. The metering unit is positioned such that the injector 113 is aligned with or snaps into the mounting plate 120 with the opening 123. The metering unit is attached to the mounting plate 120.In various embodiments, as shown in 304, spacers 138 can be added to the fasteners 122 before fasteners, for example nuts 139, are coupled to the fasteners 122 to attach the dispensing system 110 to the mounting plate 120 at 305. In various embodiments, when the nuts 139 are tightened on the fasteners 122, the fastener heads 136 are drawn close to the mounting brackets 121 (e.g., flush with the surface 133), thereby maintaining the gap 135 between the top of the fastener head 136 and the upper surface 127 of the mounting plate 120 for passive cooling. In certain embodiments, the mounting brackets 121 can include a retaining function, e.g., a plurality of threads, so that the mounting brackets 121 can hold fasteners 122 securely without a separate and removable nut.

[0019] Fig. Figure 4 is an enlarged perspective view of the dosing system 110 coupled with the mounting plate 120 according to exemplary embodiments. Fig. Figure 4 shows the unit in the assembled state after completion of step 5 of Fig. 3.

[0020] Fig. Figure 5 illustrates a test system for a metering system implemented according to exemplary embodiments. The test system comprises a closed chamber 501 containing the selective catalytic reduction (SCR) system, including a metering system, such as the metering system 110, located therein. The closed chamber 501 is configured to simulate the temperatures to which exhaust components, such as the SCR system 100, are exposed in actual applications. The test setup also includes an air source to simulate the airflow to which the metering system and the exhaust gases are exposed when attached to a vehicle while the vehicle is in motion. Tests were conducted simulating worst-case engine operating conditions as well as ambient conditions.When conventional metering system designs were subjected to similar conditions in the past, they exceeded fluid temperature limits, subsequently leading to malfunctions such as clogged injectors, severe corrosion, fluid leakage, etc. The test demonstrated the ability of the Metering System 110 to at least partially prevent malfunctions associated with exceeding fluid temperature limits, clogged injectors, severe corrosion, and fluid leakage by reducing and limiting the physical temperatures at several critical locations on the Metering System 110, the SCR System 100, and for the fluid itself.

[0021] Fig. Figure 6 shows a numerical flow simulation analysis of a dosing system subjected to thermal boundary conditions according to exemplary embodiments, which are based on the test system of Fig. 5 were obtained. As shown by the contrast in temperatures of the SCR exhaust muffler compared to the metering legs and housings, embodiments disclosed herein contribute to maintaining a temperature difference between the metering unit and exhaust muffler housing.

[0022] Fig. Figure 7 provides a graph illustrating the temperatures to which components of the metering system 110 are exposed in response to specific exhaust gas temperatures to which the SCR system 100 is exposed. The y-axis, representing the reaction temperatures, has been normalized against the temperature limit specified for metering systems.

[0023] During the test procedures, the mounting plate 120 significantly reduced heat transfer to the dosing system 110 and prevented overheating of the dosing system 110. The mounting plate 110 also successfully withstood strong vehicle vibration profiles, thus confirming its structural integrity.

[0024] When used in this document, the words "approximately," "about," "substantially," and similar words are intended to have a broad meaning consistent with their usual and accepted use by those skilled in the art to which the subject matter of this disclosure relates. Those skilled in the art reading this disclosure should understand that these terms are intended to permit the description of certain described features without limiting the scope of those features to the specified exact numerical ranges. Accordingly, these terms should be interpreted to indicate insignificant or irrelevant modifications or alterations to the described subject matter and to be considered as belonging to the scope of the invention.

[0025] It should be noted that the term "exemplary", used here to describe various embodiments, indicates possible examples, representations and / or illustrations of possible embodiments (and that such a term should not imply that such embodiments are necessarily exceptional or outstanding examples).

[0026] For the purposes of this disclosure, the term "coupled" means the direct or indirect joining of two elements. Such a joining may be stationary or mobile. Such a joining may be achieved with the two elements, or with the two elements and any additional intermediate elements formed as a single body, or with the two elements and any additional interconnected intermediate elements. Such a joining may be permanent, removable, or detachable.

[0027] It should be noted that the orientation of the various elements may differ according to other exemplary embodiments, and that such variations are included in the present disclosure. It is recognized that features of the disclosed embodiments may be contained in other disclosed embodiments.

[0028] It is essential to note that the designs and arrangements of the components, as illustrated in the various exemplary embodiments, serve only for illustrative purposes. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art studying it will readily understand that numerous modifications (e.g., in sizes, dimensions, structures, shapes and proportions of the various elements, parameter values, assembly arrangements, material usage, colors, orientations, etc.) are possible without significantly departing from the novel teachings and advantages of the disclosed subject matter. For example, elements shown as being made in one piece can be constructed from several parts or elements, the position of elements can be exchanged or otherwise varied, and the nature and number of individual elements or positions can be changed or modified.The sequence or order of process or procedure steps may be varied or rearranged according to alternative embodiments. Further substitutions, modifications, changes, and omissions may be made to the design, operating conditions, and arrangement of the various exemplary embodiments without deviating from the scope of this disclosure.

[0029] All literature and similar material cited in this application, including, but not limited to, patents, patent applications, articles, books, contracts, and websites, are expressly incorporated by reference in their entirety, regardless of the format of such literature or similar material. If one or more parts of the literature or similar material differ from or contradict this application, including, but not limited to, defined terms, usage of terms, described techniques, or the like, this application shall prevail.

[0030] Although various embodiments of the invention are described and illustrated herein, those skilled in the art will readily be able to imagine a multitude of other mechanisms and / or structures for carrying out the function and / or obtaining the results and / or one or more of the advantages described herein, and each such variation and / or modification will be considered to be within the scope of the embodiment of the invention described herein. More generally, those skilled in the art will readily understand that all parameters, dimensions, materials, and configurations described herein are intended as examples and that the actual parameters, dimensions, materials, and / or configurations will depend on the specific application or applications for which the teachings of the invention are used.Experts will recognize many equivalents to the specific embodiments of the invention described herein or will be able to identify them using only routine experiments. It is therefore assumed that the foregoing embodiments are presented only as examples and that, within the scope of the appended claims and their equivalents, embodiments of the invention can be implemented in practice in ways other than those specifically described and claimed. Embodiments of the invention as presented in this disclosure are directed to all features, systems, articles, materials, kits, and / or methods described herein. Furthermore, any combination of two or more such features, systems, articles, materials, kits, and / or methods is included within the scope of the invention as presented in this disclosure, provided that such features, systems, articles, materials, kits, and / or methods are not mutually exclusive.

[0031] Furthermore, the technology described herein may be embodied as a method, of which at least one example has been provided. The actions performed as part of the method may be arranged in any suitable manner unless specifically indicated otherwise. Accordingly, embodiments may be constructed in which actions are performed in a different order than illustrated, which may include the simultaneous performance of such actions, even if they are depicted as sequential actions in illustrated embodiments.

[0032] All definitions, as defined and described herein, shall prevail over dictionary definitions, definitions in documents incorporated by reference, and / or normal meanings of the defined terms.

[0033] The indefinite articles “a”, “an”, “a”, as used herein in the specification and in the claims, shall be understood to mean “at least one”, unless clearly stated otherwise.

[0034] The expression “and / or”, as described herein in the specification and in the claims, is intended to mean “one or both” of the elements so connected, i.e., elements that are present together in some cases and separately in other cases. Multiple elements listed with “and / or” should be interpreted in the same way, i.e., “one or more” elements so connected. Other elements may optionally be present alongside the elements specifically specified by the “and / or” clause, whether connected to or not connected with those specifically specified elements.Thus, as a non-restrictive example, a reference to “A and / or B” when used together with open language such as “comprehensive” can in one embodiment refer only to A (and optionally include elements other than B), in another embodiment only to B (and optionally include elements other than A), and in yet another embodiment to both A and B (and optionally include other elements), etc.

[0035] As used herein in the specification and in the claims, "or" should be understood in the same sense as "and / or" as defined above. For example, when separating elements in a list, "or" or "and / or" should be interpreted as inclusive, i.e., the inclusion of at least one, but also including more than one, of a series or list of elements and optionally additional, unlisted elements. Only terms that clearly state the opposite, e.g., "only one of" or "exactly one of" or, when used in claims, "consisting of," refer to the inclusion of exactly one element of a series or list of elements. In general, the term "or," as used herein, should only be interpreted as indicating exclusive alternatives (i.e., "one or the other, but not both") when preceded by terms of exclusivity, e.g.,“One of the two”, “one of”, “only one of”, or “exactly one of”. “Consisting essentially of”, when used in claims, is intended to have its normal meaning as in patent law.

[0036] As used herein in the specifications and claims, the term "at least one" when referring to a list of one or more elements should be understood to mean at least one element selected from one or more elements in the list of elements, but not necessarily including at least one of the elements specifically listed in the list of elements, and not excluding any combination of elements in the list of elements. This definition also allows for elements to be optionally present alongside the elements specifically specified in the list of elements to which the term "at least one" refers, whether associated with or unassociated with those specifically specified elements.Thus, as a non-restrictive example, “at least one of A and B” (or equivalently “at least one of A or B” or equivalently “at least one of A and / or B”) can in one embodiment refer to at least one, optionally more than one, of A, where no B is present (and optionally includes elements other than B), in another embodiment to at least one, optionally more than one, of B, where no A is present (and optionally includes elements other than A), in yet another embodiment to at least one, optionally more than one, of A, and at least one, optionally more than one, of B (and optionally includes other elements), etc.

[0037] In the claims and in the specifications above, all transitional formulations such as “comprehensive”, “including”, “containing”, “with”, “incorporated”, “consisting of” and similar are to be understood as open, i.e. in the sense of “including etc.”

[0038] The claims are not to be read as limiting the described sequence or elements unless otherwise stated. It should be understood that various modifications in form and detail can be made by those skilled in the art without deviating from the spirit and scope of the attached claims. All embodiments that comply with the spirit and scope of the following claims, as well as their equivalents, are claimed.

Claims

[1] Selective catalytic reduction system (100), comprising: a dispenser mounting system with: a mounting plate (120) with an opening (123) in a surface (127) of the mounting plate (120), a plurality of mounting brackets (121) coupled to the mounting plate (120), wherein the plurality of mounting brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of mounting brackets (121) is spaced away from the mounting plate (120), and each of the plurality of mounting brackets (121) includes an opening (128) in the part that is spaced away from the mounting plate (120), and a plurality of fasteners (122), each having a fastening head (136) and a fastening shaft (137) positioned in the openings (128) of the plurality of fastening brackets (121), such that each fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fastening bracket (121) that is spaced from the mounting plate (120), and each fastening shaft (137) extends from a respective opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120); and a dispenser (110) coupled to the dispenser mounting system via the plurality of fixings (122), wherein the fixing shafts (137) extend through openings in legs (111) of the dispenser (110), wherein an injector opening of the dispenser is aligned with the opening (123) in the mounting plate (120). [2] System (100) according to claim 1, wherein each fastening (122) is coupled to a corresponding fastening bracket (121) such that a space (135) is maintained between the fastening head (136) and the surface (127) of the mounting plate (120). [3] System (100) according to claim 1 or 2, wherein the raised openings (128) include raised slots. [4] System (100) according to claim 3, wherein each raised slot comprises a plurality of different sides (129 - 132) having a shape which corresponds, at least partially, to the shape of the fastening head (136) of the respective fastening (122) from the plurality of fastenings (122). [5] System (100) according to one of the preceding claims, including a plurality of nuts coupled to the plurality of fastening shafts (137) such that the openings in the legs (111) of the dispenser (110) are located between the nuts and a heat insulator (124) coupled to the plurality of fastenings (122) on the fastening shaft (137). [6] System (100) according to one of the preceding claims, including a thermal insulator (124) coupled to the plurality of fastenings (122) on the fastening shaft (137). [7] System (100) according to one of the preceding claims, wherein the plurality of mounting brackets (121) is coupled to the mounting plate (120) along a length of a corresponding mounting bracket (121) from the plurality of mounting brackets (121). [8] System (100) according to claim 6, wherein the thermal insulator (124) contains a material with low thermal conductivity. [9] System (100) according to claim 8, wherein the material with low thermal conductivity contains mica. [10] System (100) according to one of the preceding claims, wherein the metering attachment system is coupled to an exhaust muffler at an inlet opening in the exhaust muffler. [11] System (100) according to any one of claims 2 to 4, including a plurality of nuts and a plurality of spacers (138) each coupled to the plurality of fastenings (122) such that a spacer (138) is arranged between the nut and the opening in the leg (111) of the dispenser (110). [12] Dispenser mounting system, comprising: a mounting plate (120) with opening (123); a plurality of mounting brackets (121) coupled to the mounting plate (120), wherein the mounting brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of mounting brackets (121) is spaced away from the mounting plate (120), and each of the mounting brackets (121) includes an opening (128) in the part that is spaced away from the mounting plate (120); a plurality of fixings (122), each having a fixing head (136) and a fixing shaft (137) positioned in the openings (128) of the fixing brackets (121), such that each fixing head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fixing bracket (121) that is spaced from the mounting plate (120), and each fixing shaft (137) extends from a respective opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120), and a thermal insulator (124) which is coupled to the multitude of fixings (122) via the fixing shafts (137). [13] System (100) according to any one of claims 1 to 11, wherein each of the raised openings comprises a plurality of different sides (129 - 132) having a shape which, at least partially, corresponds to the shape of the fastening head (136) of the corresponding fastening (122) from the plurality of fastenings (122). [14] System (100) according to any one of claims 1 to 11 or 13, wherein each mounting bracket (121) includes a thread configured to hold a corresponding fastening (122). [15] Method of coupling a dosing system (110) to a dosing system, comprising methods: Coupling of a plurality of fastenings (122) to a plurality of fastening brackets (121) coupled to a surface (127) of a mounting plate (120), wherein the mounting plate (120) includes an opening (123) in the surface (127) of the mounting plate (120), wherein the plurality of fastening brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of fastening brackets (121) is spaced apart from the mounting plate (120), and wherein each of the fastening brackets (121) comprises a bracket opening (128) in the part that is spaced apart from the mounting plate (120), wherein the plurality of fastenings (122) each have a fastening head (136) and a fastening shaft (137), and wherein the plurality of fastenings (122) are coupled to the fastening brackets (121).such that a corresponding fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the fastening bracket (121) that is spaced away from the mounting plate (120), the fastening shaft (137) extending from the bracket opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120); Coupling of a thermal insulator (124) with the plurality of fastenings (122) via the fastening shafts (137); Coupling of a dispenser (110) to the plurality of fixings (122) such that the fixing shafts (137) extend through openings in legs (111) of the dispenser (110), wherein an injector opening of the dispenser (110) is aligned with the opening (123) in the mounting plate (120), and Coupling of a multitude of nuts with the fastening shafts (137) such that the openings in the legs (111) of the dispenser (110) are located between the nuts and the heat insulator (124) and a space (135) is maintained between the fastening head (136) and the surface (127) of the mounting plate (120). [16] Method according to claim 15, including coupling the mounting plate (120) to an exhaust muffler. [17] Method according to claim 15 or 16, including coupling a plurality of spacers (138) to the plurality of fastenings (122) such that a spacer (138) is arranged between the nut and the opening in the leg (111) of the dispenser (110). [18] Method according to any one of claims 15 to 17, wherein each of the raised bracket slots comprises a plurality of different sides (129 - 132) with a shape which, at least partially, corresponds to the shape of the fastening head (136) of the corresponding fastening (122) from the plurality of fastenings (122). [19] System according to one of claims 1 to 11, 13 or 14, wherein each fastening head (136) is partially covered by the part of the respective fastening bracket (121) that is spaced apart from the mounting plate (120). [20] System according to any one of claims 1 to 11, 13, 14 or 19, wherein an air gap (135) is defined between the fastening head (136) and the surface (127) of the mounting plate (120) when the fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fastening bracket (121), wherein the air gap (135) is configured to allow an airflow between the fastening head (136) and the mounting plate (120).

Images