Description:TECHNICAL FIELD
[001] The embodiments herein relate to exhaust after treatment systems in vehicles, and more particularly, to a system and a method for mounting exhaust after treatment devices of an engine in an off-road vehicle such as tractor.
BACKGROUND
[002] An Exhaust After Treatment System (EATS) plays a crucial role in controlling pollution emitted from internal combustion engines, including those in vehicles like tractors. The EATS significantly reduces harmful emissions such as nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC), and carbon monoxide (CO), which contribute to air pollution and have adverse effects on human health and the environment. By treating the exhaust gases before releasing them into the atmosphere, EATS helps in meeting stringent emission standards and regulations, thereby mitigating the environmental impact of vehicle emissions.
[003] In order to meet the emission standards, set by the emission norms such as the Euro-V and Bharat-V1, off-road vehicles such as tractors have to be provided with the exhaust after treatment system. Generally, the EATS includes a Diesel Particulate Filter (DPF), a Selective Catalytic Reduction (SCR) device, and a Diesel Oxidation Catalyst (DOC). Upon exiting the engine, the exhaust gases first enter the DOC. Here harmful gases like carbon monoxide and hydrocarbons are oxidized into less harmful carbon dioxide and water. The heated gases then flow into the DPF, where soot and particulate matter are trapped and periodically burned off during regeneration. After particulate filtration, the gases move to the SCR device, wherein a catalyst is used to convert harmful nitrogen oxides (NOx) into nitrogen and water through a chemical reaction with urea which significantly reduces NOx levels before the gases are released into the atmosphere.
[004] The exhaust after treatment system also includes a mixer (also known as a mixing device) which is provided to thoroughly mix the reducing agent (such as AdBlue or Diesel Exhaust Fluid (DEF)) with the exhaust gases before they enter the SCR device. By ensuring proper mixing, the reducing agent can effectively react with the nitrogen oxides (NOx) present in the exhaust stream. The mixture of reducing agent and exhaust gases then proceeds to the SCR catalyst. A dosing module is also provided in the EATS for precisely injecting the reducing agent into the exhaust system. The dosing module ensures that the right amount of reducing agent is delivered to achieve effective NOx conversion in the SCR device.
[005] Conventionally, in tractors, as shown in Fig. 1 which depicts a perspective view of a conventional system (1000) for mounting the exhaust after treatment devices (2000, 3000), the DOC and DPF unit (2000), and SCR device (3000) are packaged in vicinity to each other, on the engine (specifically, the engine valve cover), to save packaging space. A mixing chamber/ passage (4000) is provided between the SCR device (3000) and the DPF (2000). A dosing module (5000) is separately mounted near an outlet of the DOC+DPF unit (2000) to enable dosing and mixing of the reducing agent with the exhaust gas when the exhaust gas flows from the DPF to the SCR device. Since the DOC+DPF unit (2000) and SCR device (3000) are packaged in a compact space, the length of the mixing chamber/passage (4000) is kept shorter to enable compact connection between the DPF and SCR device. Although, the shorter length of the mixing chamber/passage provides compact packaging, however, it impacts the proper mixing of the reducing agent with the exhaust gas.
[006] Furthermore, packaging all components of the EATS under the hood of the tractor poses a challenge, specifically when the tractor is mid-sized or small-sized. In such tractors, the vehicle packaging envelope is not designed to allow packaging of all after treatment systems above the engine (under hood of the vehicle). When the complete exhaust after treatment system which includes the DOC, DPF, and SCR device, is packed inside the hood, issues such as DOC fouling with hood support bracket and side body of hood, and fouling of dosing module with side body of hood, arise. Further, packaging the EATS over the engine and under the hood of the vehicle creates difficulty in providing routing for differential pressure sensor pipe, turbocharger inlet and outlet pipes, and insufficiency of packaging space for an AC compressor mounting drive. Also, the compact packaging creates hindrance in access to injectors of the engine, thereby causing difficulty in serviceability of the engine and its auxiliary components. In order to accommodate all components of the EATS under the hood, the hood size needs to be increased, which in turn impacts visibility of the driver and creating discomfort while driving.
[007] Therefore, there exists a need for a system and a method for mounting exhaust after treatment devices in a vehicle which obviates the aforementioned drawbacks.
OBJECTS
[008] The principal object of embodiments herein is to provide a system for mounting exhaust after treatment devices of an engine in a vehicle.
[009] Another object of embodiments herein is to provide the system for mounting exhaust after treatment devices in the vehicle which facilitates mounting of a DOC and DPF exhaust after treatment unit on an engine valve cover, and mounting of a SCR device in a vertical orientation, outside a hood of the vehicle.
[0010] Another object of embodiments herein is to provide the system for mounting exhaust after treatment devices in the vehicle which has a larger mixer pipe length which facilitates in better mixing of exhaust gases with a reducing agent injected by a dosing module.
[0011] Another object of embodiments herein is to provide the system for mounting exhaust after treatment devices in the vehicle to facilitate connection of the dosing module with the mixer pipe near an upstream flow of exhaust gas, thereby enhancing mixing of reducing agent with the exhaust gas.
[0012] Another object of embodiments herein is to provide a method for mounting the exhaust after treatment devices of the engine in the vehicle.
[0013] These and other objects of embodiments herein will be better appreciated and understood when considered in conjunction with following description and accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRAWINGS
[0014] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0015] Fig. 1 depicts a conventional system for mounting exhaust after treatment devices of an engine in a vehicle;
[0016] Fig. 2 depicts an isometric view of a system for mounting exhaust after treatment devices of an engine in a vehicle, according to embodiments as disclosed herein;
[0017] Fig. 3 depicts another isometric view of the system for mounting exhaust after treatment devices of the engine, according to embodiments as disclosed herein;
[0018] Fig. 4A depicts a perspective view of the system for mounting exhaust after treatment devices of the engine, according to embodiments as disclosed herein;
[0019] Fig. 4B depicts another perspective view of the system for mounting exhaust after treatment devices of the engine, according to embodiments as disclosed herein;
[0020] Fig. 5 depicts a perspective view of the system showing an exhaust after treatment unit mounted on an engine valve cover of the engine, according to embodiments as disclosed herein;
[0021] Fig. 6A depicts an isometric view of the exhaust after treatment unit mounted on the engine valve cover, according to embodiments as disclosed herein;
[0022] Fig. 6B depicts another isometric view of the exhaust after treatment unit mounted on the engine valve cover, according to embodiments as disclosed herein;
[0023] Fig. 7A depicts a perspective view of a first mounting bracket assembly of the system, according to embodiments as disclosed herein;
[0024] Fig. 7B depicts another perspective view of the exhaust after treatment unit mounted on the engine valve cover, according to embodiments as disclosed herein;
[0025] Fig. 8 depicts an isometric view of a mounting member and a locking member of the first mounting bracket assembly, according to embodiments as disclosed herein;
[0026] Fig. 9 depicts an isometric view of a Selective Catalyst Reduction (SCR) device, according to embodiments as disclosed herein;
[0027] Fig. 10 depicts a perspective view of a second bracket of the system, according to embodiments as disclosed herein;
[0028] Fig. 11A depicts an isometric view of the second bracket of the system, according to embodiments as disclosed herein;
[0029] Fig. 11B depicts another isometric view of the second bracket of the system, according to embodiments as disclosed herein;
[0030] Fig. 12A depicts an isometric view of a mixer pipe with a dosing module mounted thereon, according to embodiments as disclosed herein;
[0031] Fig. 12B depicts another isometric view of the mixer pipe with the dosing module mounted thereon, according to embodiments as disclosed herein;
[0032] Fig. 13 depicts an isometric view of the mixer pipe of the system, according to embodiments as disclosed herein;
[0033] Fig. 14 depicts a sectional view of the mixer pipe of the system, according to embodiments as disclosed herein;
[0034] Fig. 15 depicts yet another isometric view of the system for mounting exhaust after treatment devices of the engine, according to embodiments as disclosed herein; and
[0035] Fig. 16 is a flowchart depicting a method for mounting exhaust after treatment devices in a vehicle, according to embodiments as disclosed herein.
DETAILED DESCRIPTION
[0036] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0037] The embodiments herein achieve a system for mounting exhaust after treatment devices in the vehicle which facilitates mounting of a DOC and DPF exhaust after treatment unit on an engine valve cover, and mounting of a SCR device in a vertical orientation, outside a hood of the vehicle. Further, embodiments herein achieve a method for mounting the exhaust after treatment devices of the engine in the vehicle. Referring now to the drawings Figs. 1 through 16, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0038] Fig. 2 depicts an isometric view of a system (100) for mounting exhaust after treatment devices (30, 40) of an engine (20) in a vehicle (10), according to embodiments as disclosed herein. Fig. 3 depicts an isometric view of the system (100), according to embodiments as disclosed herein. The system (100) includes a first mounting bracket assembly (200), a second mounting bracket (300), and a mixer pipe (400). For the purpose of this description and ease of understanding, the system (100) is explained herein with below reference to a tractor. However, it is also within the scope of the invention to use/practice the components of the system (100) for any other vehicle without otherwise deterring the intended function of the system (100) as can be deduced from the description and corresponding drawings. The exhaust after treatment devices (30, 40) of the engine (20) include an exhaust after treatment unit (30), and a Selective Catalyst Reduction (SCR) device (40). The exhaust after treatment unit (30) includes a Diesel Oxidation Catalyst (DOC) (32) and a Diesel Particulate Filter (DPF) housed within a housing (30H) of the exhaust after treatment unit (30).
[0039] Figs. 4A and 4B depict isometric views of the system (100) for mounting the exhaust after treatment devices (30, 40), according to embodiments as disclosed herein. The first mounting bracket assembly (200) is configured to facilitate mounting of the exhaust after treatment unit (30) onto an engine valve cover (22) of the engine (20). The second mounting bracket (300) is adapted to facilitate mounting of the SCR device (40) in the vehicle (10). As shown in Fig. 2, the second mounting bracket (300) is connected to a vehicular structure (12) of the vehicle (10), and is adapted to facilitate mounting of the SCR device (40) away from the engine valve cover (22), near a second vehicular structure (14) of the vehicle (10). In an embodiment, the vehicular structure (12) is a transmission housing of the vehicle (10), and the second vehicular structure (14) is an A-pillar of the vehicle (10), wherein the second mounting bracket (300) is adapted to be connected with the transmission housing of the vehicle (10) and facilitate mounting of the SCR device (40) near the A-pillar of the vehicle (10). Further, the mixer pipe (400) is adapted to be connected with the exhaust after treatment unit (30) and the SCR device (40), and is adapted to connect a dosing module (500) thereon.
[0040] Fig. 5 depicts a perspective view of the exhaust after treatment unit (30) mounted on the engine valve cover (22) of the engine (20) through the first mounting bracket assembly (200), according to embodiments as disclosed herein. Figs. 6A and 6B depict isometric views of the exhaust after treatment unit (30) mounted on the engine valve cover (22) through the first mounting bracket assembly (200), according to embodiments as disclosed herein. The first mounting bracket assembly (200) includes a main mounting bracket (202), at least one mounting member (204), and at least one locking member (206). The main mounting bracket (202) is adapted to be mounted on the engine valve cover (22), and provide a base for mounting the exhaust after treatment unit (30) onto the engine valve cover (22). The at least one mounting member (204) is adapted to be mounted on the main mounting bracket (202), and the locking member (206) is adapted to lock the housing (30H) of the exhaust after treatment unit (30) onto the mounting member (204), thereby mounting the exhaust after-treatment unit (30) onto the main mounting bracket (202) through the mounting member (204). Figs. 7A and 7B depict perspective views of the first mounting bracket assembly (200) of the system (100), according to embodiments as disclosed herein. The first mounting bracket assembly (200) further includes a first bracket (208) (as shown in Figs. 6A and 6B), a second bracket (210), and a third bracket (212) (as shown in Figs. 6A and 6B). The first bracket (208) is adapted to be detachably connected with the main mounting bracket (202), and provide a support for mounting the exhaust after treatment unit (30) onto the main mounting bracket (202). The second bracket (210) is adapted to be connected on the main mounting bracket (202), and detachably connected with the first bracket (208). The second bracket (210) is adapted to reinforce the first bracket (208). Further, the third bracket (212) is adapted to be connected on the main mounting bracket (202). The third bracket (212) is adapted to facilitate mounting of an outlet (36) of the exhaust after treatment unit (30) onto the main mounting bracket (200).
[0041] Fig. 8 depicts an isometric view of the mounting member (204) and the locking member (206) of the first mounting bracket assembly (200), according to embodiments as disclosed herein. In an embodiment, as shown in Fig. 8, the mounting member (204) is at least a mounting channel, and the locking member (206) is an adjustable strap bracket adapted to be adjusted to facilitate mounting and demounting of the exhaust after treatment unit (30) from the mounting member (204). The locking member (206) is adapted to be wound around the housing (30H) of the exhaust after treatment unit (30) (as shown in Figs. 6A and 6B) and each end (206A, 206B) of the locking member (206) is adapted to be locked with a corresponding end (204A, 204B) of the mounting member (204).
[0042] Fig. 9 depicts an isometric view of the SCR device (40), according to embodiments as disclosed herein. Figs. 10, 11A, and 11B depict different isometric views of the second mounting bracket (300), according to embodiments as disclosed herein. The second mounting bracket (300) includes a first portion (302), and a second portion (304) extending transversely from the first portion (302). The first portion (302) of the second mounting bracket (300) is adapted to be connected to the vehicular structure (12) (as shown in Fig. 10). The first portion (302) extends from the vehicular structure (12) towards the second vehicular structure (14) of the vehicle (10) (as shown in Fig. 2). In an embodiment, the first portion (302) has a curved L shape, wherein a horizontal arm (302H) is connected to the vehicular structure (12), and a vertical arm (302V) extends transversely from the horizontal arm (302H), upwards towards the second vehicular structure (14) (as shown in Figs. 2, 10, 11A, and 11B). The second mounting bracket (300) is connected to the vehicular structure (12) by fastening the horizontal arm (302H) of the first portion (302) with the vehicular structure (12). The horizontal arm (302H) includes a plurality of apertures (302A) to receive corresponding fastening means such as a bolt. Furthermore, the second portion (304) of the second mounting bracket (304) is disposed near the second vehicular structure (14) (as shown in Fig. 2). The second portion (304) extends from the vertical arm (302V) of the first portion (302). The second portion (304) is adapted to provide a base for mounting the SCR device (40) onto the second mounting bracket (300) in vicinity of the second vehicular structure (14) (as shown in Fig. 2). The SCR device (40) is adapted to be mounted in a vertical orientation onto the second mounting bracket (300) (as shown in Figs. 2, 3, 4A, 4B, and 9). A SCR mounting member (44) is connected with the second portion (304) of the second mounting bracket (300), thereby mounting the SCR device (40) onto the second mounting bracket (300). In an embodiment, the SCR device (40) is mounted on the second portion (304) of the second mounting bracket (300) by fastening the SCR mounting member (44) with the second portion (304), wherein the second portion (304) includes a plurality of holes (304H) to receive a fastening means such as a bolt.
[0043] Figs. 12A, 12B and 13 depict different isometric views of the mixer pipe (400) according to embodiments as disclosed herein. The mixer pipe (400) includes a first section (402), and a second section (404). The first section (402) is adapted to extend from an outlet (36) of the exhaust after treatment unit (30) disposed at a first end portion (30F) of the exhaust after treatment unit (30), towards a second end portion (30S) of the exhaust after treatment unit (30) (as shown in Figs. 4A and 4B). The first section (402) of the mixer pipe (400) is adapted to guide a downstream flow of exhaust gas exiting from the exhaust after treatment unit (30). The second section (404) of the mixer pipe (400) extends transversely from the first section (402) towards the inlet (42) of the SCR device (40). The second section (404) of the mixer pipe (400) is adapted to guide an upstream flow of exhaust gas towards the SCR device (40). As shown in Figs. 12A and 12B, the dosing module (500) is adapted to be disposed near the upstream flow of the exhaust gas. In an embodiment, the dosing module (500) is a water cooled dosing module adapted to utilize a coolant of the engine as the reducing agent. The second section (404) of the mixer pipe (400) includes a connecting member (406) adapted to facilitate connection of the dosing module (500) with the mixer pipe (400) (as shown in Fig. 13). Further, a first locking member (408) is adapted to securely connect the first section (402) of the mixer pipe (400) with the outlet (36) of the exhaust after treatment unit (30), and a second locking member (410) is adapted to securely connect the second section (404) of the mixer pipe (400) with the inlet (42) of the SCR device (400). Each of the first locking member (408) and the second locking member (410) is at least a strap bracket.
[0044] Fig. 14 depicts a sectional view of the mixer pipe (400), according to embodiments as disclosed herein. The system (100) includes at least one mixing member (600) disposed at the upstream flow of the exhaust gas, inside the second section (404) of the mixer pipe (400). The mixing member (600) is adapted to mix the exhaust gas with a reducing agent injected by the dosing module (500). In an embodiment, the mixing member (600) is a baffle. Furthermore, the system (100) includes a support bracket (412) adapted to support the second section (404) of the mixer pipe (400) onto the second mounting bracket (300) (as shown in Figs. 4A and 4B).
[0045] Fig. 15 depicts another isometric view of the system (100), according to embodiments as disclosed herein. The system (100) includes a plurality of heat shields (100H) adapted to be overlaid on the exhaust after treatment unit (30), the SCR device (40), and the mixer pipe (400). In an embodiment, the mixer pipe (400) includes a plurality of protruding members (414) adapted to receive a corresponding heat shield (100H) (as shown in Figs. 12A to 14).
[0046] Fig. 16 is a flowchart depicting a method (700) for mounting exhaust after treatment devices (30,40) of the engine (20) in the vehicle (10), according to embodiments as disclosed herein. The method (700), at step (702) includes, mounting, by the first mounting bracket assembly (200), the exhaust after treatment unit (30), onto the engine valve cover (22) of the engine (20). At step (704), the method (700) includes, mounting, by the second mounting bracket (300), the SCR device (40) in the vehicle (10). The method (700) further includes, at step (706), connecting the mixer pipe (400) with the outlet (36) of the exhaust after treatment unit (30) and the inlet (42) of the SCR device (40). The method (700), at step (708) includes, connecting the dosing module (500) with the mixer pipe (400) near the upstream flow of exhaust gas flowing from the exhaust after treatment unit (30) towards the SCR device (40). In an embodiment, the step (702) includes, mounting the main mounting bracket (202) on the engine valve cover (22), at step (7022). At step (7024), the method (700) includes, mounting the first bracket (208) onto the main mounting bracket (202), connecting the second bracket (210) with the first bracket (208), and mounting the mounting member (204) onto the main mounting bracket (202). At step (7026), the method (700) includes, locking, by the locking member (206), the housing (30H) of the exhaust after treatment unit (30) onto the main mounting bracket (202), and supporting, by the first bracket (208), the first end portion (30F) of the exhaust after treatment unit (30) on the main mounting bracket (202). In an embodiment, the step (704) includes, at step (7042), connecting the first portion (302) of the second mounting bracket (300) with the vehicular structure (12) of the vehicle (10). At step (7044), the method (700) includes, mounting by the second portion (304) of the second mounting bracket (300), the SCR device (40) in the vertical orientation near the second vehicular structure (14).
[0047] The technical advantages of the system (100) and method (700) for mounting exhaust after treatment devices (30,40) of an engine (20) in the vehicle (10) are as follows. Positioning of the DOC+DPF exhaust after treatment unit on the engine valve cover and the SCR device near the A-pillar of the vehicle creates sufficient space in the hood of the vehicle for accommodating other components such as DP sensor pipe, turbocharger pipe, AC compressor, and drive belt mounting, while also preventing fouling of the exhaust after treatment unit with the hood and hood support bracket. Mounting the SCR device near the A-pillar of the vehicle in vertical orientation does not hinder visibility of the driver while creating packaging space in the hood, and additionally allows a mixer pipe with larger length to be connected with the exhaust after treatment unit and the SCR device. Better mixing of exhaust gas and reducing agent injected from the dosing module due to the extra length of the mixer pipe and positioning of the dosing module near upstream flow of exhaust gas. Enhanced performance of exhaust after treatment devices due to better mixing of reducing agent and exhaust gas, and using water cooled dosing module.
[0048] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modifications within the spirit and scope of the embodiments as described herein.
, Claims:We claim,
1. A system (100) for mounting exhaust after treatment devices (30, 40) in a vehicle (10), said system (100) comprising:
a first mounting bracket assembly (200) configured to facilitate mounting of an exhaust after treatment unit (30) comprising a Diesel Oxidation Catalyst (DOC) (32) and a Diesel Particulate Filter (DPF) (34), onto an engine valve cover (22) of an engine (20);
a second mounting bracket (300) connected to a vehicular structure (12) of the vehicle (10), said second mounting bracket (300) adapted to facilitate mounting of a Selective Catalytic Reduction (SCR) device (40); and
a mixer pipe (400) adapted to be connected with the exhaust after treatment unit (30) and the Selective Catalytic Reduction (SCR) device (40), said mixer pipe (400) adapted to connect a dosing module (500) thereon.
2. The system (100) as claimed in claim 1, wherein said first mounting bracket assembly (200) comprises:
a main mounting bracket (202) adapted to be mounted on the engine valve cover (22), said main mounting bracket (202) adapted to provide a base for mounting the exhaust after treatment unit (30) onto the engine valve cover (22);
at least one mounting member (204) adapted to be mounted onto said main mounting bracket (202); and
at least one locking member (206) adapted to lock a housing (30H) of said exhaust after-treatment unit (30) onto said mounting member (204) thereby mounting said exhaust after-treatment unit (30) onto said main mounting bracket (202) through said mounting member (204).
3. The system (100) as claimed in claim 2, wherein said first mounting bracket assembly (200) includes:
a first bracket (208) adapted to be detachably connected with said main mounting bracket (202), said first bracket (208) adapted to provide a support for mounting said exhaust after treatment unit (30) onto said main mounting bracket (202);
a second bracket (210) adapted to be connected on said main mounting bracket (202), said second bracket (210) adapted to be detachably connected with said first bracket (208), wherein said second bracket (210) is adapted to reinforce said first bracket (208); and
a third bracket (212) adapted to be connected on said main mounting bracket (202), wherein said third bracket (212) is adapted to facilitate mounting of an outlet (36) of the exhaust after treatment unit (30) onto said main mounting bracket (200).
4. The system (100) as claimed in claim 2, wherein said mounting member (204) is at least a mounting channel, and said locking member (206) is an adjustable strap adapted to be adjusted to facilitate mounting and dismounting of the exhaust after treatment unit (30) from said mounting member (204).
5. The system (100) as claimed in claim 1, wherein said second mounting bracket (300) comprises:
a first portion (302) adapted to be connected to the vehicular structure (12), wherein said first portion (302) extends from the vehicular structure (12) towards a second vehicular structure (14) of the vehicle (10); and
a second portion (304) extending transversely from said first portion (302) and disposed near said second vehicular structure (14), wherein said second portion (304) is adapted to provide a base for mounting said Selective Catalytic Reduction (SCR) device (40) onto said second mounting bracket (300), in vicinity of said second vehicular structure (14), wherein said vehicular structure (12) is a transmission housing of the vehicle (10), and said second vehicular structure (14) is an A-pillar of the vehicle (10).
6. The system (100) as claimed in claim 5, wherein said Selective Catalytic Reduction (SCR) device (40) is adapted to be mounted in a vertical orientation onto said second mounting bracket (300), wherein a Selective Catalytic Reduction (SCR) mounting member (44) is connected to the Selective Catalytic Reduction (SCR) device (40), wherein said Selective Catalytic Reduction (SCR) mounting member (44) is adapted to be connected with said second portion (304) of said second mounting bracket (300), thereby mounting said Selective Catalytic Reduction (SCR) device (40) onto said second mounting bracket (300).
7. The system (100) as claimed in claim 1, wherein said mixer pipe (400) comprises:
a first section (402) extending from an outlet (36) of the exhaust after treatment unit (30) disposed at a first end portion (30F) of the exhaust after treatment unit (30), towards a second end portion (30S) of the exhaust after treatment unit (30), wherein said first section (402) is adapted to guide a downstream flow of exhaust gas exiting from said exhaust after treatment unit (30); and
a second section (404) extending transversely from said first section (402) towards an inlet (42) of said Selective Catalytic Reduction (SCR) device (40), wherein said second section (404) is adapted to guide an upstream flow of exhaust gas towards said Selective Catalytic Reduction (SCR) device (40).
8. The system (100) as claimed in claim 7, wherein said dosing module (500) is adapted to be disposed near the upstream flow of the exhaust gas, wherein said second section (404) of said mixer pipe (400) includes a connecting member (406) adapted to facilitate connection of said dosing module (500) with said mixer pipe (400).
9. The system (100) as claimed in claim 7, wherein a first locking member (408) is adapted to securely connect said first section (402) of said mixer pipe (400) with the outlet (36) of the exhaust after treatment unit (30), wherein a second locking member (410) is adapted to securely connect said second section (404) of said mixer pipe (400) with the inlet (42) of the Selective Catalytic Reduction (SCR) device (40), wherein each of said first locking member (408) and said second locking member (410) is at least a strap bracket, and wherein a support bracket (412) is adapted to support said second section (404) of said mixer pipe (400) onto said second mounting bracket (300).
10. The system (100) as claimed in claim 7, wherein said system (100) includes at least one mixing member (600) disposed at the upstream flow of the exhaust gas, inside said second section (404) of said mixer pipe (400), wherein said mixing member (600) is adapted to mix the exhaust gas with a reducing agent injected by said dosing module (500), and wherein said dosing module (500) is adapted to utilize a coolant of the engine as the reducing agent.
11. The system (100) as claimed in claim 1, wherein said system (100) includes a plurality of heat shields (100H) adapted to be overlaid on the exhaust after treatment unit (30), the Selective Catalytic Reduction (SCR) device (40), and said mixer pipe (400).
12. A method (700) for mounting exhaust after treatment devices (30, 40) in a vehicle (10), said method (700) comprising:
mounting, by a first mounting bracket assembly (200), an exhaust after treatment unit (30) comprising a Diesel Oxidation Catalyst (DOC) (32) and a Diesel Particulate Filter (DPF) (34), onto an engine valve cover (22) of an engine (20);
mounting, by a second mounting bracket (300), a Selective Catalyst Reduction (SCR) device (40) thereon;
connecting a mixer pipe (400) with an outlet (36) of the exhaust after treatment unit (30) and an inlet (42) of the SCR device (40);
connecting a dosing module (500) with said mixer pipe (400), near an upstream flow of exhaust gas flowing from the exhaust after treatment unit (30) towards the SCR device (40).
13. The method (700) as claimed in claim 12, wherein said mounting by said first mounting bracket assembly (200) includes:
mounting a main mounting bracket (202) onto the engine valve cover (22);
mounting a first bracket (208) onto said main mounting bracket (202);
connecting a second bracket (210) with said main mounting bracket (202) and said first bracket (208);
mounting a mounting member (204) onto said main mounting bracket (202);
locking, by a locking member (206), a housing (30H) of the exhaust after treatment unit (30) onto said mounting member (204), thereby mounting said exhaust after treatment unit (30) onto said main mounting bracket (202);
supporting, by said first bracket (208), a first end portion (30F) of the exhaust after treatment unit (30) on said main mounting bracket (202), and wherein said mounting by said second mounting bracket (300) includes:
connecting a first portion (302) of said second mounting bracket (300) with a vehicular structure (12) of the vehicle (10),
mounting, by a second portion (304) of said second mounting bracket (300), the SCR device (40) in a vertical orientation, near a second vehicular structure (14).