Exhaust catalytic device
By designing a horizontal structure support component with a flat part, the problems of vibration suppression and insufficient space configuration of the existing exhaust catalytic device are solved, and the effects of lightweight, cost reduction and catalytic converter protection are achieved.
Patent Information
- Application Number
- CN202422187271.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing exhaust catalytic devices have shortcomings in vibration suppression and space configuration, resulting in increased costs and damage to the catalytic converter.
An exhaust catalytic device is designed, wherein the support member has a flat portion located at least on the upper surface in the upper and lower directions of the support member, forming a horizontal structure to suppress vibration in the horizontal direction by a single support member, and allowing the displacement of the catalytic converter in a direction perpendicular to the axis to absorb thermal expansion.
It realizes reducing the number of components, reducing costs, ensuring the spatial configuration effect, while taking into account vibration suppression and protecting the catalytic converter.
Smart Images
Figure CN223035124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an exhaust catalytic device, and more particularly to an exhaust catalytic device adapted to be installed on an engine body. Background Art
[0002] In recent years, in order to ensure access to affordable, reliable, sustainable and advanced energy for more people, research and development on lightweighting that contributes to energy efficiency has been underway. However, in lightweighting technologies, vibration suppression of exhaust catalytic devices used in vehicles is an issue.
[0003] In the prior art, an exhaust catalytic device can be provided at the exhaust part of an engine such as an internal combustion engine of a vehicle. The exhaust catalytic device purifies pollutants in the exhaust gas discharged from the engine through an exhaust manifold by connecting a catalytic converter to the exhaust manifold, and discharges the purified gas through an external exhaust pipe. In order to suppress damage to the catalytic converter caused by vibration transmitted from the engine body, the existing method is to provide a plurality of support members to fix the catalytic converter and the exhaust pipe to the engine body (cylinder head, cylinder block, etc.) and support the catalytic converter and the exhaust pipe, in order to suppress vibration in multiple directions such as the front-rear direction, horizontal direction, and up-down direction. However, the use of a plurality of support members increases the manufacturing cost of the exhaust catalytic device. Moreover, different types of engines do not necessarily have a configuration space for providing a plurality of support members, that is, the space configuration effect of the exhaust catalytic device is not good. In addition, the catalytic converter and the exhaust pipe are fixed by a plurality of support members, so that the thermal expansion of the catalytic converter is restricted and damage is likely to occur. Thus, it is necessary to improve the structure of the exhaust catalytic device.
[0004] The purpose of the present utility model is to solve the above problems and achieve lightweighting by reducing the number of components, suppressing costs and ensuring a good space configuration effect, while taking into account vibration suppression and protecting the catalytic converter. Moreover, it further contributes to energy efficiency. Summary of the Utility Model
[0005] The present utility model provides an exhaust catalytic device that can reduce the number of components to achieve lightweighting, suppress costs and ensure a good space configuration effect, while taking into account vibration suppression and protecting the catalytic converter.
[0006] The present utility model provides an exhaust gas catalytic device, which is suitable for being installed on an engine body and includes: a catalytic converter, vertically arranged in the up-and-down direction and connected to the engine body; an exhaust pipe, integrally provided on the downstream side of the catalytic converter; and a support member, connecting the engine body and the exhaust pipe, wherein the support member has a flat portion, and the flat portion is at least located on the upper surface of the support member in the up-and-down direction.
[0007] In an embodiment of the present utility model, the support member has a flange portion, and the flange portion is provided at at least one end edge of the flat portion.
[0008] In an embodiment of the present utility model, the protruding direction of the flange portion is perpendicular to the plane direction of the flat portion.
[0009] In an embodiment of the present utility model, the exhaust gas catalytic device further includes: a bracket member, welded to the exhaust pipe. The first end of the support member is fixed to the engine body through a first fixing member, and the second end of the support member is fixed to the bracket member through a second fixing member, and is fixed to the exhaust pipe through the bracket member.
[0010] In an embodiment of the present utility model, the fixing direction of the first fixing member is different from the fixing direction of the second fixing member.
[0011] In an embodiment of the present utility model, the first end of the support member is fixed to the engine body through a fixing member, and the second end of the support member is welded to the exhaust pipe.
[0012] Based on the above, in the exhaust gas catalytic device of the present utility model, the support member connecting the engine body and the exhaust pipe has a flat portion, and the flat portion is at least located on the upper surface of the support member in the up-and-down direction. Thus, the support member is configured as a horizontal structure having a flat portion on the upper surface, so that vibration can be suppressed in the horizontal direction by a single support member. And, the support member configured as a horizontal structure can allow displacement of the catalytic converter in a direction perpendicular to the axis, so that thermal expansion of the catalytic converter can be absorbed and damage to the catalytic converter can be suppressed. Accordingly, the exhaust gas catalytic device of the present utility model can reduce the number of components to achieve light weight, suppress costs and ensure the space configuration effect, while taking into account vibration suppression and protecting the catalytic converter.
[0013] In order to make the above features and advantages of the present utility model more obvious and understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a perspective schematic view of an exhaust gas catalytic device according to an embodiment of the present utility model;
[0015] Figure 2 is Figure 1 a partially enlarged schematic view of the exhaust catalytic device shown;
[0016] Figure 3 is a partially enlarged schematic view of the exhaust catalytic device of other modified examples of the present utility model.
[0017] Explanation of reference numerals
[0018] 50: Engine body;
[0019] 50A: Cylinder head;
[0020] 50B: Cylinder block;
[0021] 100, 100A: Exhaust catalytic device;
[0022] 110: Catalytic converter;
[0023] 110a: Inlet end face;
[0024] 110b: Outlet end face;
[0025] 120: Exhaust pipe;
[0026] 130, 130A: Support member;
[0027] 132: Flat portion;
[0028] 134: Flange portion;
[0029] 136a: First end portion;
[0030] 136b: Second end portion;
[0031] 138: Bent portion;
[0032] 139: Fixing hole;
[0033] 139a: First fixing hole;
[0034] 139b: Second fixing hole;
[0035] 140: Exhaust manifold;
[0036] 142a, 152a: Upstream end portion;
[0037] 142b, 152b: Downstream end portion;
[0038] 144: Mounting piece;
[0039] 150: Exhaust connection pipe;
[0040] 160: Bracket member;
[0041] 170: Fixing member;
[0042] 170a: First fixing member;
[0043] 170b: Second fixing member;
[0044] C: Axis center;
[0045] D1, D2, D3, D4: Fixing directions;
[0046] S: Upper surface;
[0047] X: Front - rear direction;
[0048] Y: Left - right direction;
[0049] Z: Up - down direction. Detailed implementation manners
[0050] Hereinafter, while referring to the attached Figure 1 drawings, the implementation manners of the present utility model will be described. Among them, Figure 1 FIG. is a perspective view of an exhaust catalytic device according to an embodiment of the present utility model, Figure 2 is Figure 1 a partially enlarged view of the exhaust catalytic device shown in FIG., Figure 3 is a partially enlarged view of an exhaust catalytic device according to other variants of the present utility model. Hereinafter, the specific structure of the exhaust catalytic device 100 of this embodiment and the structural differences in other variants will be described in conjunction with Figures 1 to 3 the drawings. However, these are only some examples in the present utility model, and the present utility model is not limited thereto, and it can be adjusted according to requirements.
[0051] Please refer to Figure 1 and Figure 2 In this embodiment, the exhaust catalytic device 100 is adapted to be installed on the engine body 50. The exhaust catalytic device 100 includes a catalytic converter 110, an exhaust pipe 120, and a support member 130. The catalytic converter 110 is vertically arranged in the up - down direction Z and is connected to the engine body 50. The exhaust pipe 120 is integrally provided on the downstream side of the catalytic converter 110. The support member 130 connects the engine body 50 and the exhaust pipe 120. Among them, the support member 130 has a flat portion 132, and the flat portion 132 is at least located on the upper surface S of the support member 130 in the up - down direction Z.
[0052] Specifically, in this embodiment, as shown in Figure 1As shown, the engine body 50 is, for example, a cylinder of an internal combustion engine used in a vehicle and includes a cylinder head 50A and a cylinder block 50B. An exhaust catalytic device 100 may be provided at the exhaust portion of the engine body 50. It purifies pollutants in the exhaust gas discharged from the engine body 50 through an exhaust manifold (not shown) by connecting the catalytic converter 110 to the exhaust manifold, and discharges the purified gas through an external exhaust pipe 120. Therefore, the catalytic converter 110 is, for example, installed on the cylinder head 50A (the exhaust manifold connected to the inside of the cylinder head 50A) and is vertically arranged in the vertical direction Z. The exhaust pipe 120 is, for example, installed on the cylinder block 50B through a support member 130.
[0053] As an example, in this embodiment, as Figure 1 shown, the exhaust manifold of the engine body 50 connects to a plurality of combustion chambers and converges into a single exhaust port. Thus, the exhaust catalytic device 100 further includes an exhaust collector 140. The upstream end 142a of the exhaust collector 140 is fixed to the cylinder head 50A of the engine body 50 through an integrally formed mounting piece 144 and is connected to the exhaust holes of the exhaust manifold. And, the downstream end 142b of the exhaust collector 140 is connected to the catalytic converter 110 to send the exhaust from the engine body 50 to the catalytic converter 110. Thus, the exhaust collector 140 not only serves to send the exhaust of the engine body 50 to the catalytic converter 110, but also serves to mount / fix the catalytic converter 110 on the engine body 50 (the cylinder head 50A thereof).
[0054] Similarly, in this embodiment, as Figure 1 shown, the exhaust catalytic device 100 further includes an exhaust connection pipe 150. The upstream end 152a of the exhaust connection pipe 150 is connected to the catalytic converter 110, and the downstream end 152b of the exhaust connection pipe 150 is connected to the exhaust pipe 120. That is, the upstream side of the catalytic converter 110 is connected to the exhaust manifold of the engine body 50 (the cylinder head 50A thereof) through the exhaust collector 140, and the downstream side of the catalytic converter 110 is connected to the exhaust pipe 120 through the exhaust connection pipe 150. And, the exhaust pipe 120 is connected (fixed) to the engine body 50 (the cylinder block 50B thereof) through the support member 130. Regarding the specific structure (combustion chamber, cylinder, exhaust manifold, etc.) of the engine body 50 such as an internal combustion engine, reference can be made to the prior art and will not be elaborated here. The present utility model does not limit the connection manner between the engine body 50 and the various components of the exhaust catalytic device 100 (does not limit the setting of the exhaust collector 140 and the exhaust connection pipe 150), and does not limit the specific structure and type of the engine body 50 (not limited to being an internal combustion engine), which can be adjusted according to requirements.
[0055] Furthermore, in this embodiment, as Figure 1 and Figure 2As shown, the catalytic converter 110 is configured as a cylindrical structure having an axis C, and includes a carrier having a honeycomb structure formed with a large number of cells therein, and a catalyst material (not shown) such as platinum or rhodium supported on the carrier. The catalytic converter 110 has an inlet end face 110a and an outlet end face 110b. The exhaust gas from the engine body 50 flows into the catalytic converter 110 from the inlet end face 110a through the exhaust gas collecting pipe 140, and the exhaust gas purified by the catalytic converter 110 flows from the outlet end face 110b through the exhaust gas connecting pipe 150 to the exhaust pipe 120. Regarding the specific structure of the catalytic converter 110, reference can be made to the prior art, and details will not be elaborated here. The present utility model does not limit the specific structure of the catalytic converter 110, and it can be adjusted according to requirements.
[0056] Furthermore, in the present embodiment, as Figure 1 shown in Figure 2 FIG., the support member 130 connects the engine body 50 and the exhaust pipe 120, and the flat portion 132 of the support member 130 is at least located on the upper surface S of the support member 130. As an example, the support member 130 is, for example, a horizontal support bar extending in the horizontal direction and formed in a substantially flat plate shape, so that the entire upper surface S is a flat surface corresponding to the flat portion 132 (but not limited thereto). Here, the horizontal direction refers to the direction perpendicular to the up-and-down direction Z, and when the axis C of the catalytic converter 110 is arranged along the up-and-down direction Z, the horizontal direction refers to the direction perpendicular to the axis. The horizontal direction can be the front-back direction X, the left-right direction Y, or the direction on the horizontal plane formed by the front-back direction X and the left-right direction Y. The present utility model does not limit the specific structure of the support member 130 and the installation method (does not limit the specific shape, installation range, etc. of the flat portion 132), and it can be adjusted according to requirements.
[0057] With the above arrangement, in the exhaust gas catalytic device 100 of the present embodiment, the support member 130 connecting the engine body 50 and the exhaust pipe 120 has a flat portion 132, and the flat portion 132 is at least located on the upper surface S of the support member 130 in the up-and-down direction Z. Thus, the support member 130 is configured as a horizontal structure having a flat portion 132 on the upper surface S, so that vibration can be suppressed in the horizontal direction by a single support member 130. Moreover, the support member 130 configured as a horizontal structure can allow displacement of the catalytic converter 110 in the direction perpendicular to the axis C (i.e., the horizontal direction), so that the thermal expansion of the catalytic converter 110 can be absorbed and damage to the catalytic converter 110 can be suppressed. Accordingly, the exhaust gas catalytic device 100 can reduce the number of components to achieve weight reduction, suppress costs, and ensure the space configuration effect, while taking into account vibration suppression and protecting the catalytic converter 110.
[0058] Furthermore, in the present embodiment, as Figure 1As shown in Figure 2 , the support member 130 has a flange portion 134, and the flange portion 134 is provided at at least one end edge of the flat portion 132, for example, at the outer edge of the flat portion 132. As an example, the protruding direction of the flange portion 134 (for example, the downward direction) is perpendicular to the plane direction of the flat portion 132 (that is, the horizontal direction). That is, the flange portion 134 protrudes perpendicularly from the end edge of the flat portion 132. In this way, the support member 130 forms a structure with an L-shaped cross-section, so that vibration can be suppressed in the horizontal direction with a single support member 130, and further vibration can be suppressed in the vertical direction Z. Moreover, the support member 130 can absorb the thermal expansion of the catalytic converter 110 by allowing displacement of the catalytic converter 110 in the direction perpendicular to the axis C (that is, the horizontal direction), and further allow displacement of the catalytic converter 110 in the direction of the axis C (that is, the vertical direction Z) to absorb the thermal expansion of the catalytic converter 110.
[0059] Here, the flange portion 134 provided on the support member 130 can be provided along the side edge of the entire flat portion 132 (that is, the upper surface S) as shown in Figure 2 , or can be provided only in one section of the side edge. The flange portion 134 can be adjusted accordingly according to the position and size of the flat portion 132, etc. In other embodiments not shown, the flange portion 134 of the support member 130 can be provided on the inner edge of the flat portion 132 (inside in Figure 2 and blocked by the flat portion 132 in this perspective), so that the support member 130 forms a structure with an L-shaped cross-section. Alternatively, the flange portion 134 of the support member 130 can also be provided at opposite end edges of the flat portion 132, that is, the outer edge and the inner end edge of the flat portion 132, so that the support member 130 forms a structure with a lid-shaped cross-section. The present utility model does not limit the number, specific structure, and whether to provide the flange portion 134, and it can be adjusted according to requirements.
[0060] In addition, in this embodiment, as shown in Figure 1 and Figure 2As shown, the exhaust gas catalytic device 100 further includes a bracket member 160. The bracket member 160 is welded to the exhaust pipe 120. The first end portion 136a of the support member 130 is fixed to the engine body 50 (cylinder block 50B thereof) by a first fixing member 170a (such as a bolt), and the second end portion 136b of the support member 130 is fixed to the bracket member 160 by a second fixing member 170b (such as a bolt), and is fixed to the exhaust pipe 120 through the bracket member 160. That is to say, the exhaust pipe 120 is connected to the engine body 50 (cylinder block 50B thereof) through the two components of the support member 130 and the bracket member 160. In this way, the installation effect of the exhaust gas catalytic device 100 can be improved (for example, by adjusting the installation positions of the exhaust pipe 120 and the support member 130 with a bracket member 160 of small size to facilitate the adjustment of the structural layout of the configuration space).
[0061] As an example, in this embodiment, as Figure 2 shown, the fixing direction D1 of the first fixing member 170 (equivalent to the fixing direction of the first end portion 136a of the support member 130) is different from the fixing direction D2 of the second fixing member 170b (equivalent to the fixing direction of the second end portion 136b of the support member 130). For example, the first end portion 136a of the support member 130 is formed with a bent portion 138 that bends downward from the flat portion 132 (upper surface S), and a first fixing hole 139a for the first fixing member 170a to pass through is formed in the bent portion 138. In contrast, the second end portion 136b of the support member 130 is the side end of the flat portion 132, and a second fixing hole 139b for the second fixing member 170b to pass through is formed in the side end of the flat portion 132. In this way, the first end portion 136a and the second end portion 136b of the support member 130 are fixed in different fixing directions, which can suppress the torsional deformation of the support member 130 and improve the structural rigidity of the support member 130. However, the specific structure and fixing method of the support member 130 of the present utility model are not limited, and the specific structure of the bracket member 160 and whether it is provided or not are not limited, and it can be adjusted according to requirements.
[0062] Please refer to Figure 3 , in Figure 3 the modification of, the exhaust gas catalytic device 100A has a substantially similar structural configuration to the aforementioned exhaust gas catalytic device 100, and its main differences are as follows. In Figure 3 the exhaust gas catalytic device 100A shown, the first end portion 136a of the support member 130A is fixed to the engine body 50 (cylinder block 50B thereof) by a fixing member 170 (such as a bolt), and the second end portion 136b of the support member 130A is welded to the exhaust pipe 120. That is to say, compared with the aforementioned exhaust gas catalytic device 100, Figure 3The exhaust gas catalytic device 100A shown omits the setting of the bracket member 160. The exhaust pipe 120 is connected to the engine body 50 (the cylinder block 50B thereof) through a single support member 130A. In this way, the number of components of the exhaust gas catalytic device 100 can be reduced to achieve weight reduction, cost suppression, and ensure the effect of space configuration.
[0063] As an example, in Figure 3 In a modified example, the fixing direction D3 of the first end portion 136a of the support member 130A is different from the fixing direction D4 of the second end portion 136b of the support member 130A. For example, the first end portion 136a of the support member 130A is formed with a bent portion 138 that bends downward from the flat portion 132 (the upper surface S), and a fixing hole 139 for the fixing member 170 to pass through is formed in the bent portion 138. In contrast, the second end portion 136b of the support member 130A is the side end of the flat portion 132 and is used for welding to the exhaust pipe 120. In this way, the first end portion 136a and the second end portion 136b of the support member 130A are fixed in different fixing directions, which can suppress the torsional deformation of the support member 130A and improve the structural rigidity of the support member 130A. However, the present utility model does not limit the specific structure and fixing method of the support member 130A, nor does it limit the setting of the bracket member 160, and it can be adjusted according to requirements.
[0064] In summary, in the exhaust gas catalytic device of the present utility model, the support member connecting the engine body and the exhaust pipe has a flat portion, and the flat portion is at least located on the upper surface of the support member in the up and down direction. In this way, the support member is configured as a horizontal structure with a flat portion on the upper surface, so that vibration can be suppressed in the horizontal direction by a single support member. And the support member configured as a horizontal structure can allow the displacement of the catalytic converter in the direction perpendicular to the axis, so that the thermal expansion of the catalytic converter can be absorbed and damage to the catalytic converter can be suppressed. Preferably, the support member has a flange portion provided at at least one edge of the flat portion, and forms a structure with an L-shaped or cover-shaped cross-section, so that vibration can be further suppressed in the up and down direction, and the displacement of the catalytic converter in the axial direction can be further allowed to absorb the thermal expansion of the catalytic converter. Accordingly, the exhaust gas catalytic device of the present utility model can reduce the number of components to achieve weight reduction, cost suppression, and ensure the effect of space configuration, while taking into account vibration suppression and protecting the catalytic converter.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An exhaust catalytic device, suitable for installation on an engine body, and characterized in that: include: A catalytic converter is vertically arranged in the up-down direction and connected to the engine body; an exhaust pipe integrally disposed on the downstream side of the catalytic converter; as well as A support component is connected to the engine body and the exhaust pipe, wherein The support member has a flat portion, and The flat portion is located at least on the upper surface of the supporting member in the up-down direction.
2. The exhaust catalytic device according to claim 1, characterized in that: The support member has a flange portion, and The flange portion is provided on at least one end edge of the flat portion.
3. The exhaust catalytic device according to claim 2, characterized in that: The protruding direction of the flange portion is perpendicular to the plane direction of the flat portion.
4. The exhaust gas catalytic converter according to any one of claims 1 to 3, characterized in that: Also includes: A bracket component, welded to the exhaust pipe, The first end of the support member is fixed to the engine body through a first fixing member, and The second end of the supporting component is fixed to the bracket component through a second fixing member, and is fixed to the exhaust pipe through the bracket component.
5. The exhaust catalytic device according to claim 4, characterized in that: A fixing direction of the first fixing member is different from a fixing direction of the second fixing member.
6. The exhaust gas catalytic converter according to any one of claims 1 to 3, characterized in that: The first end of the support member is fixed to the engine body through a fixing member, and The second end portion of the supporting component is welded to the exhaust pipe.