Exhaust catalyst and vehicle

Abstract

The utility model relates to an exhaust catalytic converter and a vehicle, and the exhaust catalytic converter comprises a catalytic converter body and a guide plate; the catalyst body comprises a barrel and an air inlet clamshell, and the air inlet clamshell communicates with one end of the barrel; the guide plate is arranged on the windward side of the catalyst body and comprises a first guide section and a second guide section which are connected, the first guide section is arranged on the cylinder, and the second guide section is arranged on the air inlet clamshell. According to the exhaust catalyst, high-temperature air is guided through the guide plate, the amount of high-temperature air flowing through an engine suspension can be reduced, the temperature of a suspension area where the engine suspension is located is reduced, and the service life of the engine suspension is guaranteed.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to an exhaust catalytic converter and a vehicle. Background Technology

[0002] With the continuous iteration and upgrading of modern vehicle power technology, especially the increasing maturity of hybrid electric drive technology, the size of the electric drive assembly in the engine compartment has become increasingly large. This has led to a complex and compact engine compartment layout, shortening the gap between heat sources such as exhaust catalytic converters and the engine mount area. This exposes low-temperature resistant parts in the engine compartment to severe heat damage, especially rubber parts such as engine mounts. Engine mounts bear harsh loads and have high fatigue durability requirements. The mount material is generally natural rubber, which has a relatively low temperature resistance, such as below 100℃. However, the ambient temperature inside the vehicle engine compartment is currently high, especially when the exhaust catalytic converter is located behind the radiator. External air entering the engine compartment from the grille is heated by the high-temperature surface of the exhaust catalytic converter. When it flows through the mount area, it can easily cause the actual temperature of the engine mount to exceed its maximum tolerance temperature, affecting the service life of the engine mount.

[0003] Therefore, how to reduce the temperature of the engine mount area to ensure the service life of the engine mount is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this application is to provide an exhaust catalyst and a vehicle that can reduce the amount of high-temperature air flowing through the engine mounts, lower the temperature of the mount area, and ensure the service life of the engine mounts.

[0005] To solve the above-mentioned technical problems, this application provides an exhaust catalyst, including a catalyst body and a guide plate; the catalyst body includes a cylinder and an intake shell, the intake shell being connected to one end of the cylinder; the guide plate is disposed on the windward side of the catalyst body, the guide plate including a first guide section and a second guide section connected together, the first guide section being disposed on the cylinder, and the second guide section being disposed on the intake shell.

[0006] Optionally, it further includes at least two fixing members arranged at intervals along the length direction of the guide plate, the guide plate being fixed to the catalyst body by the fixing members.

[0007] Optionally, the catalyst body includes a body portion and a housing that surrounds the body portion. The housing has a fixing hole, and the fixing member passes through the fixing hole and is welded to the body portion.

[0008] Optionally, the guide plate and the fixing member are fixed together by fasteners.

[0009] Optionally, the guide plate is further fixed with a mounting nut, and the fixing member is provided with a mounting hole, through which a mounting bolt passing through the mounting hole is threadedly engaged with the mounting nut for fixation;

[0010] And / or, the thickness of the fastener is 1.2mm-2mm.

[0011] Optionally, the guide plate may also have a downward-facing flange structure on one side in the width direction.

[0012] Optionally, the flange structure is located on the side of the guide plate facing the catalyst body.

[0013] Optionally, the width of the flange structure is not less than 5mm.

[0014] Optionally, the guide plate is an integrally formed stamped sheet metal part;

[0015] And / or, the width of the guide plate is not less than 20mm;

[0016] And / or, the thickness of the guide plate is 0.8mm-1.2mm;

[0017] And / or, the length of the first guide segment is 180mm-220mm, and the length of the second guide segment is 80mm-120mm.

[0018] This application also provides a vehicle including an exhaust catalytic converter as described above.

[0019] The exhaust catalytic converter and vehicle provided in this application have the following technical advantages compared to the prior art:

[0020] The guide plate is located on the windward side of the catalyst body. The guide plate includes a first guide section, a bent section and a second guide section arranged sequentially along the length direction. The two opposite sides of the guide plate are defined as the first side and the second side, where the first side refers to the side where the bent section is concave inward and the second side refers to the side where the bent section is convex outward.

[0021] The ambient air entering the engine compartment through the grille exchanges heat with the exhaust catalytic converter, increasing its temperature and forming high-temperature air. Due to the obstruction of the engine, the high-temperature air reaching the exhaust catalytic converter adheres to its surface and diffuses around the catalytic converter along a plane roughly perpendicular to the direction of the ambient air inflow. The guide plate can block and guide the high-temperature air blowing to the first side, causing this part of the high-temperature air to flow along the extension direction of the second guide section, thus bypassing the location of the suspension area. Only a portion of the high-temperature air blowing to the second side will reach the location of the suspension area during the diffusion process.

[0022] Without a guide plate, some of the hot air blown to the first side would diffuse into the engine mount area. Therefore, the guide plate effectively reduces the amount of hot air reaching the mount area, resulting in an overall decrease in the mount area temperature. Experiments show that the mount area temperature with a guide plate is 3-5°C lower than the mount area temperature without a guide plate. This demonstrates that a guide plate effectively reduces the mount area temperature, thereby decreasing the probability of the engine mount's lifespan being affected by high mount area temperatures, and thus ensuring the engine mount's service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the exhaust catalyst provided in the embodiments of this application;

[0024] Figure 2 yes Figure 1 A schematic diagram of the structure of the guide section.

[0025] Appendix Figures 1-2 The reference numerals in the attached figures are explained as follows:

[0026] 1 Catalyst body, 11 Cylinder, 12 Inlet shell, 13 Outer shell, 131 Fixing hole;

[0027] 2 guide section, 21 guide plate, 211 first guide section, 212 second guide section, 213 flange structure, 214 bending section, 22 fastener, 23 mounting nut, 24 mounting bolt;

[0028] 3. Suspension area. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] With the continuous iteration and upgrading of modern vehicle power technology, especially the continuous maturation of hybrid electric drive technology, the size of the electric drive assembly in the engine compartment has become increasingly large, resulting in a complex and compact engine compartment layout, which shortens the gap between heat sources such as exhaust catalysts and the mounting area where the engine mounts are located.

[0031] After the vehicle starts, the ambient temperature inside the engine compartment is relatively high. The exhaust gas from the engine passes through the exhaust catalytic converter, which converts harmful substances in the exhaust gas into harmless substances. However, because the exhaust gas temperature is high, the exhaust catalytic converter temperature is also relatively high. The ambient air entering the engine compartment through the grille exchanges heat with the exhaust catalytic converter, causing its temperature to rise. At the same time, the hot air flows along the outer surface of the exhaust catalytic converter. Since the engine can block the hot air, it diffuses along a plane perpendicular to the direction of the ambient air inflow to the periphery of the exhaust catalytic converter. Some of the hot air flows to the area where the engine mounts are located. This area is roughly located above the side of the exhaust catalytic converter facing the inlet. Since engine mounts are generally made of natural rubber, which has relatively poor heat resistance, the hot air passing through the area where the engine mounts are located will affect the service life of the engine mounts.

[0032] Therefore, this application provides an exhaust catalyst and a vehicle, wherein the vehicle's engine compartment houses components such as an engine, an exhaust catalyst, and an engine mount, with the mount area 3 and the exhaust catalyst positioned approximately as follows: Figure 1 As shown, the exhaust catalyst includes a catalyst body 1 and a guide section 2. The guide section 2 is fixed to the windward side of the catalyst body 1, with the wind direction as follows: Figure 1 As shown by the three rows of thin solid arrows, the side of the catalytic converter body 1 facing the incoming wind is the windward side. The ambient air entering the engine compartment through the grille flows through the exhaust catalytic converter. Due to the guiding effect of the guide section 2, most of the hot air flows along the surface of the catalytic converter body 1 and bypasses the mounting area 3 along the guiding direction of the guide section 2. Only a small portion of the hot air can reach the mounting area 3 where the engine mount is located. In other words, by setting up the guide section 2, the amount of hot air heated by the exhaust catalytic converter that reaches the mounting area 3 can be reduced, thereby reducing the probability of engine mount failure due to the high temperature of the mounting area 3 and thus ensuring the service life of the engine mount.

[0033] The catalyst body 1 includes a cylinder 11 and an air intake shell 12. The air intake shell 12 is connected to the air intake end of the cylinder 11, and the height of the end of the air intake shell 12 away from the cylinder 11 is higher than the end facing the cylinder 11.

[0034] The guide section 2 includes a guide plate 21, which includes a first guide section 211 and a second guide section 212 arranged along its length. The first guide section 211 is located on the cylinder 11, and the second guide section 212 is located on the air inlet shell 12. Therefore, the height of the end of the second guide section 212 away from the first guide section 211 is higher than the height of the end facing the first guide section 211. In other words, the side of the guide plate 21 facing the air inlet shell 12 has an upward-curving structure. Figure 1As shown, the first guide section 211 can be arranged to extend approximately along the length direction of the cylinder 11, and the second guide section 212 can be arranged to extend approximately along the length direction of the air inlet shell 12.

[0035] There is a bend 214 between the first guide section 211 and the second guide section 212. The two opposite sides of the guide plate 2 are defined as the first side and the second side, where the first side refers to the side where the bend faces inward towards the bend 214 and the second side refers to the side where the bend 214 protrudes outward.

[0036] External ambient wind entering the cabin through the grille (e.g.) Figure 1 As shown by the three rows of thin solid arrows in the middle, the air temperature rises after heat exchange with the exhaust catalyst, forming high-temperature air. Due to the obstruction of the engine, the high-temperature air reaching the exhaust catalyst will adhere to the surface of the exhaust catalyst and diffuse around the exhaust catalyst along a plane roughly perpendicular to the direction of ambient air inflow. The guide plate 21 can block and guide the high-temperature air blown to the first side, so that this part of the high-temperature air will flow along the extension direction of the second guide section 212 (that is, the direction shown by the two rows of thick solid arrows in the figure), thereby bypassing the location of the suspension area 3. Only part of the high-temperature air blown to the second side will flow along the direction shown by the dashed arrow in the figure and reach the location of the suspension area 3 during the diffusion process.

[0037] Without the guide plate 21, some of the hot air blown to the first side would diffuse to the location of the mounting area 3. Therefore, the guide plate 21 effectively reduces the amount of hot air reaching the mounting area 3, causing the overall temperature of the mounting area 3 to decrease. Experiments show that the temperature of the mounting area 3 with the guide plate 21 is 3℃-5℃ lower than the temperature without the guide plate 21. This demonstrates that the guide plate 21 effectively reduces the temperature of the mounting area 3, thereby reducing the probability that the engine mount's lifespan will be affected by the high temperature of the mounting area 3, thus ensuring the lifespan of the engine mount.

[0038] In this embodiment, the guide section 2 further includes two fixing members 22. These two fixing members 22 are arranged along the length direction of the guide plate 21 and are fixed to the guide plate 21 respectively. The guide plate 21 is fixed to the catalyst body 1 through the fixing members 22. It is possible that one fixing member 22 is fixed to the first guide section 211 and the other fixing member 22 is fixed to the second guide section 212, or both fixing members 22 are fixed to one guide section at the same time.

[0039] Of course, in this embodiment, there are no restrictions on how the guide plate 21 is fixed to the catalyst body 1. For example, it can also be fixed by bonding, snapping or other methods. When fixed by the fastener 22, it is convenient to make the fastener 22 a high temperature resistant material, which has good fixing stability and is easy to disassemble and assemble.

[0040] The number of fasteners 22 is not limited; for example, there may be one, three, or more. However, at least two fasteners 22 should be spaced apart to ensure the stability of the guide plate 21.

[0041] The catalyst body 1 includes a main body portion and an outer shell 13 enclosing the main body portion. The outer shell 13 is typically made of plastic and has fixing holes 131 through which fasteners 22 can pass and be welded to the main body portion. The catalyst body 1, extending along its direction, includes a cylindrical body 11 and an air intake shell 12 connected together. The main body portion includes a portion located in the cylindrical body 11 and a portion located in the air intake shell 12. The outer shell 13 also includes a portion located in the cylindrical body 11 and a portion located in the air intake shell 12. The fasteners 22 are welded to the portion of the main body portion located in the cylindrical body 11 or the portion located in the air intake shell 12.

[0042] Welding ensures the stability of the fastener 22 and the catalyst body 1. Of course, the method of fastening the fastener 22 to the catalyst body 1 is not limited; it can also be achieved through snap-fitting or integral molding with the outer casing 13. Providing the outer casing 13 with fixing holes 131 and welding the fastener 22 through these holes to the body facilitates installation and operation. Furthermore, it eliminates the need to modify the existing outer casing 13; only the fixing holes 131 need to be machined at corresponding positions on the outer casing 13, making it highly adaptable.

[0043] The outer shell 13 can be a split structure. During installation, the fastener 22 is first welded and fixed to the main body, and then the outer shell 13 is installed so that the fastener 22 passes through the fixing hole 131 of the outer shell 13 and wraps the outer shell 13 around the main body. Finally, the guide plate 21 is fixed to the fastener 22, which is relatively convenient to operate.

[0044] There are no restrictions on the fixing method between the guide plate 21 and the fixing member 22. It is limited to fixing with fasteners, which is convenient for installation and provides good installation stability. Of course, the guide plate 21 and the fixing member 22 can also be fixed by welding, snap-fitting or gluing. When fixing with fasteners, it is also convenient to disassemble, which facilitates the maintenance of the equipment. In addition, due to the limited installation space, when disassembling the exhaust catalyst, the guide plate 21 can be separated from the fixing member 22 first, and then the catalyst body 1 can be disassembled, which is convenient for operation.

[0045] like Figure 2As shown, the guide plate 21 is also fixed with a mounting nut 23, and the fixing member 22 has a mounting hole. During installation, the mounting bolt 24 is passed through the mounting hole and threadedly engaged with the mounting nut 23 to fix it. Of course, in this embodiment, the mounting nut 23 can also be fixed to the fixing member 22. Since the fixing member 22 needs to pass through the fixing hole 131, fixing the mounting nut 23 to the guide plate 21 can reduce the opening size of the fixing hole 131, avoiding the problem of low heat insulation coverage of the outer shell 13 due to the excessively large opening size of the fixing hole 131.

[0046] Alternatively, the mounting nut 23 can be configured as an independent structure, with a corresponding mounting hole provided on the guide plate 21. During installation, the mounting bolt 24 is passed through the mounting holes of the fixing member 22 and the guide plate 21 in sequence, and then secured with the mounting nut 23. Fixing the mounting nut 23 to the guide plate 21 facilitates installation, reduces the number of parts, and avoids situations where installation is impossible due to missing parts. Alternatively, in this embodiment, a threaded hole can be machined into the guide plate 21. During installation, the mounting bolt 24 is passed through the mounting hole in the fixing member 22 and secured with the threaded hole. Fixing the mounting nut 23 to the guide plate 21 by welding reduces the thickness requirement of the guide plate 21 and simplifies the processing technology.

[0047] In this embodiment, the mounting bolt 24 is preferably a carbon steel bolt, and the surface of the mounting bolt 24 is also provided with an anti-corrosion layer to ensure the corrosion resistance of the mounting bolt 24, improve its service life, and ensure the installation stability between the fastener 22 and the guide plate 21. The anti-corrosion layer can be a zinc-nickel plating layer on the surface of the mounting bolt 24, or an anti-corrosion coating applied to the surface of the mounting bolt 24. Of course, the mounting bolt 24 can also be made of an anti-corrosion material, such as a stainless steel bolt, which can also ensure its corrosion resistance and service life. Using a carbon steel bolt and ensuring corrosion resistance through an anti-corrosion layer can effectively reduce costs and improve economic efficiency. In this embodiment, there are no restrictions on the mounting nut 23. It can be made of stainless steel, or it can be made of carbon steel with a zinc-nickel plating layer or an anti-corrosion coating on its surface.

[0048] In this embodiment, both the guide plate 21 and the fastener 22 are stainless steel plates. Of course, at least one of the guide plate 21 and the fastener 22 can be made of carbon steel or other materials, and the surface can be provided with an anti-corrosion layer. Using stainless steel plates, such as SUS 409 stainless steel, for the guide plate 21 and the fastener 22 has good corrosion resistance, high strength and long service life.

[0049] The thickness of the fastener 22 is preferably 1.2mm-2mm. Of course, the thickness of the fastener 22 can also be set to 0.8mm, 1mm, 2.2mm, 2.5mm, etc. Setting the thickness of the fastener 22 to 1.2mm-2mm, such as 1.2mm, 1.5mm, 1.8mm, 2mm, etc., can ensure the structural strength of the fastener 22, thereby ensuring the stability of the fastener between the guide plate 21 and the catalyst body 1. At the same time, it can also reduce material usage, avoid waste, reduce overall weight, and improve economy.

[0050] The thickness of the guide plate 21 is preferably 0.8mm-1.2mm. Of course, the thickness of the guide plate 21 can also be set to 0.5mm, 0.6mm, 0.7mm, or 1.3mm, 1.5mm, etc. Setting the thickness of the guide plate 21 to 0.8mm-1.2mm, such as 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, etc., can ensure the overall structural strength of the guide plate 21 while reducing the amount of material used, reducing the overall weight of the guide plate 21, and reducing costs.

[0051] The width of the guide plate 21 is preferably not less than 20mm. Of course, the width of the guide plate 21 can also be set to 15mm, 18mm, etc. Setting the width of the guide plate 21 to not less than 20mm, such as 20mm, 22mm, 25mm, etc., can ensure the guiding effect of the guide plate 21, reduce the temperature reaching the mounting area, and extend the service life of the engine mounting.

[0052] In this embodiment, the length of the guide plate 21 is not limited. The length of the first guide segment 211 is preferably 180 mm-220 mm, and the length of the second guide segment 212 is preferably 80 mm-120 mm. Of course, the length of the first guide segment 211 can also be set to 150 mm, 160 mm, 240 mm, etc., and the length of the second guide segment 212 can also be set to 60 mm, 70 mm, 130 mm, 150 mm, etc. Setting the length of the first guide segment 211 to 180 mm-220 mm, such as 180 mm, 200 mm, 220 mm, and setting the length of the second guide segment 212 to 80 mm-120 mm, such as 80 mm, 100 mm, 120 mm, can reduce the overall length of the guide plate 21 while ensuring the guiding effect of the guide plate 21 on high-temperature air, thereby reducing material consumption, reducing overall weight, and improving economy.

[0053] like Figure 2As shown, a flange structure 213 is also provided downward on one side of the guide plate 21 in the width direction. This flange structure 213 can increase the overall structural strength of the guide plate 21, reduce the probability of deformation, and ensure its service life. Of course, in this embodiment, reinforcing ribs can also be provided on the lower surface of the guide plate 21 to ensure its structural strength and prevent deformation, while the flange structure 213 can simplify the overall structure and molding process.

[0054] The flange structure 213 is preferably disposed on the side of the guide plate 21 facing the catalyst body 1. Of course, in this embodiment, the flange structure 213 can also be disposed on the side of the guide plate 21 away from the catalyst body 1. When the flange structure 213 is disposed on the side facing the catalyst body, in the fixed state, the flange structure 213 can abut against the surface of the catalyst body 1, ensuring the stability of the two being fixed by the fastener 22.

[0055] The width of the flange structure 213 is preferably not less than 5mm. Of course, the width of the flange structure 213 can also be 3mm, 4mm, etc. Setting the width of the flange structure 213 to not less than 5mm, such as 5mm, 6mm, 8mm, etc., can ensure the overall structural strength of the guide plate 21. For example, when the length of the first guide section 211 is 200mm, the length of the second guide section 212 is 100mm, the distance between the two fixing members 22 is 100mm, the width of the guide plate 21 is 20mm, and the width of the flange structure 213 is 5mm, the mode of the guide plate 21 is ≥170Hz, which can avoid resonance with the engine.

[0056] Furthermore, through experimental verification, the exhaust catalyst provided in this embodiment can reduce the temperature of the engine mount area 3 by 3°C, effectively reducing the temperature of the engine mount area and extending its service life.

[0057] In this embodiment, the guide plate 21 is an integrally formed stamped sheet metal part. Of course, in this embodiment, there is no limitation on the specific forming process of the guide plate 21. For example, it can also be set as a split structure, with the first guide section 211 and the second guide section 212 fixed by welding, or the flange structure 213 and the guide plate 21 fixed by welding. Setting the guide plate 21 as an integrally formed stamped sheet metal part can simplify the forming process and effectively improve the forming efficiency.

[0058] In the description of this application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An exhaust gas catalytic converter, characterized in that, Includes catalyst body (1) and guide plate (21); The catalyst body (1) includes a cylinder (11) and an air intake shell (12), the air intake shell (12) being connected to one end of the cylinder (11); The guide plate (21) is located on the windward side of the catalyst body (1). The guide plate (21) includes a first guide section (211) and a second guide section (212) connected together. The first guide section (211) is located on the cylinder (11), and the second guide section (212) is located on the air intake shell (12).

2. The exhaust gas catalytic converter according to claim 1, characterized in that, It also includes at least two fasteners (22) arranged at intervals along the length of the guide plate (21), the guide plate (21) being fixed to the catalyst body (1) by the fasteners (22).

3. The exhaust catalyst according to claim 2, characterized in that, The catalyst body (1) includes a body part and a shell (13) that surrounds the body part. The shell (13) is provided with a fixing hole (131). The fixing member (22) passes through the fixing hole (131) and is welded to the body part.

4. The exhaust catalyst according to claim 3, characterized in that, The guide plate (21) and the fastener (22) are fixed together by fasteners.

5. The exhaust catalyst according to claim 2, characterized in that, The guide plate (21) is also fixed with a mounting nut (23), and the fastener (22) is provided with a mounting hole. The mounting bolt (24) passing through the mounting hole is threadedly engaged with the mounting nut (23) for fixation. And / or, the thickness of the fastener (22) is 1.2mm-2mm.

6. The exhaust gas catalytic converter according to claim 3, characterized in that, The guide plate (21) is also fixed with a mounting nut (23), and the fastener (22) is provided with a mounting hole. The mounting bolt (24) passing through the mounting hole is threadedly engaged with the mounting nut (23) for fixation. And / or, the thickness of the fastener (22) is 1.2mm-2mm.

7. The exhaust catalyst according to claim 4, characterized in that, The guide plate (21) is also fixed with a mounting nut (23), and the fastener (22) is provided with a mounting hole. The mounting bolt (24) passing through the mounting hole is threadedly engaged with the mounting nut (23) for fixation. And / or, the thickness of the fastener (22) is 1.2mm-2mm.

8. The exhaust catalytic converter according to any one of claims 1-7, characterized in that, The guide plate (21) also has a flange structure (213) on one side in the width direction.

9. The exhaust catalyst according to claim 8, characterized in that, The flange structure (213) is located on the side of the guide plate (21) facing the catalyst body (1).

10. The exhaust catalyst according to claim 8, characterized in that, The width of the flange structure (213) is not less than 5mm.

11. The exhaust catalytic converter according to any one of claims 1-7, characterized in that, The guide plate (21) is an integrally formed stamped sheet metal part; And / or, the width of the guide plate (21) is not less than 20 mm; And / or, the thickness of the guide plate (21) is 0.8mm-1.2mm; And / or, the length of the first guide segment (211) is 180mm-220mm, and the length of the second guide segment (212) is 80mm-120mm.

12. A vehicle, characterized in that, Including the exhaust catalyst as described in any one of claims 1-11.

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