Exhaust manifold assembly, engine assembly and vehicle

Abstract

The utility model discloses an exhaust manifold assembly, an engine assembly and a vehicle, the exhaust manifold assembly comprises an exhaust manifold and a heat insulation assembly, the exhaust manifold comprises a plurality of branch pipes, the heat insulation assembly comprises a heat insulation part and a protection part, the heat insulation part wraps the peripheries of the branch pipes, and the protection part wraps the periphery of the heat insulation part. The heat insulation part is arranged on the periphery of the exhaust manifold, the protection part wraps the periphery of the heat insulation part, the heat insulation part blocks heat dissipation of the exhaust manifold, the protection part can protect the heat insulation part from being damaged, in this way, the heat insulation part and the protection part can completely wrap the periphery of the exhaust manifold, and therefore the occupied space of the heat insulation part and the protection part can be reduced; in addition, the weight of the exhaust manifold assembly can be reduced, the heat insulation effect of the heat insulation part on the exhaust manifold is improved, and then the lightweight design of the exhaust manifold assembly can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an exhaust manifold assembly, an engine assembly, and a vehicle. Background Technology

[0002] Currently, the heat shield on the exhaust manifold is a semi-enclosed type. The semi-enclosed heat shield is a whole heat shield plate, which will cause the heat shield to occupy a large amount of installation space, increase the weight of the exhaust manifold, and have an insignificant heat insulation effect. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an exhaust manifold assembly that can reduce the space occupied by the heat insulation component, thereby reducing the weight of the exhaust manifold assembly and improving the heat insulation effect of the heat insulation component.

[0004] This utility model further proposes an engine assembly.

[0005] This utility model further proposes a vehicle.

[0006] The exhaust manifold assembly according to this utility model includes: an exhaust manifold and a heat insulation component. The exhaust manifold includes multiple branch pipes, and the heat insulation component includes: a heat insulation element and a protective element. The heat insulation element covers the outer periphery of the multiple branch pipes, and the protective element covers the outer periphery of the heat insulation element.

[0007] According to the exhaust manifold assembly of this utility model, by setting a heat insulation component on the outer periphery of the exhaust manifold and a protective component covering the outer periphery of the heat insulation component, the heat insulation component blocks the heat dissipation of the exhaust manifold, and the protective component can protect the heat insulation component from damage. In this way, the heat insulation component and the protective component can completely cover the outer periphery of the exhaust manifold, thereby reducing the space occupied by the heat insulation component and the protective component, reducing the weight of the exhaust manifold assembly, and improving the heat insulation effect of the heat insulation component on the exhaust manifold, thus achieving a lightweight design of the exhaust manifold assembly.

[0008] In some examples of this utility model, the protective member is provided with a first flange and a second flange at the outer periphery of any one of the branch pipes, the first flange and the second flange extend along the length direction of the protective member, and the first flange and the second flange are joined together.

[0009] In some examples of this utility model, the exhaust manifold further includes: a main pipe and a flange, wherein the main pipe is connected to one end of the plurality of branch pipes, and the flange is connected to the other end of the branch pipes; wherein one end of the protective member is connected to the main pipe and the other end is connected to the flange.

[0010] In some examples of this utility model, one end of the protective component is provided with a third flange and the other end is provided with multiple fourth flanges. The third flange is connected to the main pipe, and the multiple fourth flanges are respectively connected to the flange.

[0011] In some examples of this utility model, there are multiple flanges, and the multiple flanges are connected to the multiple branch pipes in a one-to-one correspondence, and the multiple flanges are distributed at intervals.

[0012] In some examples of this utility model, the heat insulation component is provided with a through hole penetrating the heat insulation member and the protective member; the main pipe is provided with a mounting protrusion, the mounting protrusion passing through the through hole, and the mounting protrusion is adapted to be connected to the cylinder head cover by a bracket.

[0013] In some examples of this utility model, the branch pipe is a stainless steel pipe, the main pipe is a cast steel pipe, and the flange is a cast steel flange.

[0014] In some examples of this utility model, the thickness of the heat insulation component is h1, where h1 satisfies the relationship: 4mm ≤ h1 ≤ 6mm; and / or the thickness of the protective component is h2, where h2 satisfies the relationship: 0.12mm ≤ h2 ≤ 0.18mm; and / or the heat insulation component is a high-silica fiber cotton component, and the protective component is a stainless steel component.

[0015] The engine assembly according to this utility model includes: an engine and the exhaust manifold assembly described above, wherein the engine has an exhaust port and the exhaust manifold is connected to the exhaust port.

[0016] The vehicle according to this utility model includes: the engine assembly described above.

[0017] Compared with the prior art, this utility model adopts a method of setting a heat insulation component on the outer periphery of the exhaust manifold and covering the outer periphery of the heat insulation component. The heat insulation component blocks the heat dissipation of the exhaust manifold, and the protective component can protect the heat insulation component from damage. In this way, the heat insulation component and the protective component can completely cover the outer periphery of the exhaust manifold, thereby reducing the space occupied by the heat insulation component and the protective component, reducing the weight of the exhaust manifold assembly, and improving the heat insulation effect of the heat insulation component on the exhaust manifold, thus achieving a lightweight design of the exhaust manifold assembly.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a partial structural diagram of the exhaust manifold assembly from a first angle according to an embodiment of the present utility model;

[0021] Figure 2 This is a partial cross-sectional view of an exhaust manifold assembly according to an embodiment of the present utility model;

[0022] Figure 3 This is a partial structural diagram of the exhaust manifold assembly from a second angle according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the engine assembly according to an embodiment of the present utility model;

[0024] Figure 5 This is a partial structural schematic diagram of the engine assembly according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 100. Exhaust manifold assembly;

[0027] 10. Exhaust manifold; 11. Branch pipe; 20. Thermal insulation component; 21. Thermal insulation element; 22. Protective element; 30. Main pipe; 31. Mounting protrusion; 40. Flange; 50. Bracket;

[0028] 200. Engine; 210. Cylinder head cover. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0030] The following is for reference. Figures 1-5 This invention describes an exhaust manifold assembly 100 according to an embodiment of the present invention, which is used in a vehicle.

[0031] like Figures 1-3 As shown, the exhaust manifold assembly 100 according to the present invention includes: an exhaust manifold 10 and a heat insulation component 20. The exhaust manifold 10 includes a plurality of branch pipes 11. The heat insulation component 20 includes: a heat insulation element 21 and a protective element 22. The heat insulation element 21 covers the outer periphery of the plurality of branch pipes 11, and the protective element 22 covers the outer periphery of the heat insulation element 21.

[0032] It is understood that the exhaust manifold 10 and the heat insulation component 20 constitute the main structure of the exhaust manifold assembly 100. The exhaust manifold 10 has multiple branch pipes 11. The exhaust manifold 10 is connected to the exhaust port of the engine 200. The heat and exhaust gas generated by the engine 200 are collected and discharged through the multiple branch pipes 11. The heat insulation component 20 covers the outer periphery of the exhaust manifold 10. The heat insulation component 20 can protect other components around the exhaust manifold 10, thereby preventing them from being damaged by heat. The heat insulation component 20 can also maintain the optimal operating temperature of the engine 200, thereby improving the fuel efficiency of the engine 200 and enhancing the performance and power output of the engine 200. The heat insulation component 20 can also reduce the heat transferred from the exhaust manifold 10 to the passenger compartment, thereby reducing heat radiation to the occupants and improving their comfort. The heat insulation component 20 can also reduce the damage of thermal stress to the exhaust manifold 10, thereby extending the service life of the exhaust manifold 10.

[0033] The heat insulation component 21 and the protective component 22 constitute the main structure of the heat insulation assembly 20. The heat insulation component 21 covers multiple branch pipes 11, which not only prevents the heat from the exhaust manifold 10 from damaging other surrounding components, but also completely covers the surface of the multiple branch pipes 11, thereby saving the space occupied by the heat insulation component 21 and ensuring the heat insulation effect of the heat insulation component 21 on the exhaust manifold 10. The protective component 22 covers the outer surface of the heat insulation component 21, and the heat insulation component 21 is located between the protective component 22 and the exhaust manifold 10. 2 can protect the heat insulation component 21, thereby preventing the heat insulation component 21 from being damaged by other components, thus extending the service life of the heat insulation component 21. Moreover, the heat insulation component 21 and the protective component 22 fully cover the multiple branch pipes 11 in the exhaust manifold 10, which can save the space occupied by the heat insulation component 21 and the protective component 22, and also improve the heat insulation effect of the heat insulation component 21 on the branch pipes 11, thereby reducing the weight of the heat insulation component 21 and the protective component 22, thus achieving a lightweight design of the exhaust manifold assembly 100.

[0034] Therefore, by providing a heat insulation component 21 around the outer periphery of the exhaust manifold 10 and a protective component 22 covering the outer periphery of the heat insulation component 21, the heat insulation component 21 blocks the heat dissipation of the exhaust manifold 10, and the protective component 22 protects the heat insulation component 21 from damage. This allows the heat insulation component 21 and the protective component 22 to completely cover the outer periphery of the exhaust manifold 10, thereby reducing the space occupied by the heat insulation component 21 and the protective component 22, reducing the weight of the exhaust manifold assembly 100, and improving the heat insulation effect of the heat insulation component 21 on the exhaust manifold 10, thus achieving a lightweight design of the exhaust manifold assembly 100.

[0035] The protective component 22 has a first flange and a second flange on the outer periphery of any branch pipe 11. The first flange and the second flange extend along the length direction of the protective component 22 and are joined together.

[0036] Understandably, multiple branch pipes 11 are arranged such that one end is close to the other and the other end is far from each other, forming a "claw" shape. One side of the protective component 22 is provided with a first flange, and the other side opposite to this side is provided with a second flange. Both the first and second flanges extend along the length of the protective component 22. The heat insulation component 21 covers the outer periphery of the exhaust manifold 10. After the protective component 22 covers the outer periphery of the heat insulation component 21, the two sides of the protective component 22 are close to each other. At this time, the first and second flanges are also close to each other until the first and second flanges are welded together. This not only allows the protective component 22 to completely cover the outer periphery of the exhaust manifold 10 and the heat insulation component 21 without occupying too much space around the exhaust manifold 10, but also makes the protective component 22 more securely fitted onto the heat insulation component 21. This reduces the space occupied by the heat insulation component 21 and the protective component 22, improves the stability between the heat insulation component 21 and the exhaust manifold 10, and enhances the heat insulation effect of the heat insulation component 21 on the exhaust manifold 10.

[0037] In addition, such as Figures 1-3 As shown, the exhaust manifold 10 also includes a main pipe 30 and a flange 40. The main pipe 30 is connected to one end of a plurality of branch pipes 11, and the flange 40 is connected to the other end of the branch pipes 11. The protective member 22 is connected to the main pipe 30 at one end and to the flange 40 at the other end.

[0038] In other words, one end of multiple branch pipes 11 is close to each other and connected to a main pipe 30. The other end of each branch pipe 11 is far away from each other and connected to a flange 40. The flange 40 is connected to the engine 200. The main pipe 30 is far away from the engine 200. This allows the heat and exhaust gas of the engine 200 to enter the exhaust manifold 10 through the flange 40, and then be discharged from the main pipe 30 after being collected by the exhaust manifold 10. This can control and simplify the exhaust gas discharge direction. One end of the protective component 22 is connected to the main pipe 30, and the other end is connected to the flange 40. This allows the protective component 22 to cover the branch pipe 11 and then be welded to the main pipe 30 and the flange 40. This can ensure the firmness between the protective component 22 and the exhaust manifold 10, and also prevent the heat and exhaust gas of the engine 200 from corroding the heat insulation component 21 through the main pipe 30 and the flange 40. This can also ensure that the heat insulation component 21 blocks the heat of the exhaust manifold 10. For example, the flange 40 has a thickness of 10mm, which ensures that the flange 40 can withstand the heat generated by the engine 200.

[0039] In addition, one end of the protective component 22 is provided with a third flange and the other end is provided with multiple fourth flanges. The third flange is connected to the main pipe 30, and the multiple fourth flanges are respectively connected to the flange 40.

[0040] It is understandable that the protective component 22 is provided with a third flange at the end near the main pipe 30 and a fourth flange at the end near the flange 40. The third and fourth flanges are arranged opposite each other in the length direction of the protective component 22. When the protective component 22 covers the exhaust manifold 10 and the heat insulation component 21, and the first and second flanges are welded together, the third flange is welded to the main pipe 30 and the fourth flange is welded to the flange 40. This can ensure the firmness between the protective component 22 and the exhaust manifold 10, and can also prevent the heat and exhaust gas of the engine 200 from corroding the heat insulation component 21 through the main pipe 30 and the flange 40, thereby ensuring that the heat insulation component 21 blocks the heat of the exhaust manifold 10.

[0041] In particular, such as Figures 1-3 As shown, there are multiple flanges 40, each connected to a corresponding branch pipe 11, with the flanges 40 spaced apart. That is, each flange 40 is connected to the opposite end of each branch pipe 11, and the one-to-one correspondence between the flanges 40 and branch pipes 11 allows for the spaced arrangement of the flanges 40. These flanges 40 are connected to the exhaust ports of the engine 200, enabling the exhaust manifold 10 to communicate with the engine 200's exhaust ports via the flanges 40. The flanges 40 also limit the movement of the exhaust manifold 10, allowing the exhaust gas and heat from the engine 200 to be transferred to the exhaust manifold 10. For example, a V6 engine 200 may have three exhaust ports, with three flanges 40 connecting to these three ports and then to the three branch pipes 11, allowing the heat and exhaust gas from the engine 200 to be transferred to the exhaust manifold 10 via the exhaust ports and flanges 40.

[0042] In addition, such as Figure 3 and Figure 5 As shown, the heat insulation component 20 is provided with a through hole that penetrates the heat insulation component 21 and the protective component 22; the main pipe 30 is provided with a mounting protrusion 31, which passes through the through hole and is adapted to be connected to the cylinder head cover 210 via the bracket 50.

[0043] Understandably, through holes are provided at opposite positions of the heat insulation component 21 and the protective component 22, with the through holes facing the cylinder head cover 210 in the engine 200. A mounting protrusion 31 is provided on the main pipe 30. The mounting protrusion 31 extends towards the cylinder head cover 210 after passing through the through hole. The mounting protrusion 31 can limit one side of the bracket 50, and the other side of the bracket 50 is connected to the cylinder head cover 210. This allows the bracket 50 to connect the engine 200 and the main pipe 30, and can also improve the stability between the exhaust manifold assembly 100 and the engine 200, as well as prevent the exhaust manifold assembly 100 from vibrating as the engine 200 operates, thereby improving the comfort of the driver and passengers.

[0044] Specifically, branch pipe 11 is made of stainless steel, main pipe 30 is made of cast steel, and flange 40 is made of cast steel. Flange 40 is the initial point through which the heat and exhaust gas generated by engine 200 pass after passing through exhaust manifold 10, while main pipe 30 is the final point through which the heat and exhaust gas generated by engine 200 are discharged after passing through exhaust manifold 10. The cast steel flange 40 and cast steel pipe can ensure that they can withstand the maximum temperature. Since the length requirement of exhaust manifold 10 connected to V6 engine 200 is 350mm, stainless steel pipe can meet the length requirement of exhaust manifold 10. Furthermore, it ensures efficient heat and exhaust gas flow. Stainless steel pipes are also lighter than cast steel pipes, enabling a lightweight design for the exhaust manifold assembly 100. For example, the entire cast steel assembly weighs 7.44 kg, while the stainless steel branch pipe 11, cast steel pipe, and cast steel flange 40 can be reduced to 5.52 kg, a reduction of 1.92 kg, resulting in a weight reduction of 25.8%. The stainless steel pipe is grade 310S with a wall thickness of 1.5 mm, allowing it to withstand temperatures above 1000℃.

[0045] Optionally, the thickness of the heat insulation component 21 is h1, where h1 satisfies the relationship: 4mm≤h1≤6mm.

[0046] In other words, the thickness of the heat insulation component 21 must be within a reasonable range. If the thickness of the heat insulation component 21 is less than 4mm, it will not be able to adequately block the heat and exhaust gases generated by the engine 200, which will cause heat damage to the components around the engine 200 and will also cause heat to be transferred to the passenger compartment, thus shortening the service life of the components around the engine 200 and increasing radiation to the occupants. If the thickness of the heat insulation component 21 is greater than 6mm, it will require too much material, resulting in a large weight for the heat insulation component 21, which will not meet the lightweight design requirements of the exhaust manifold assembly 100. If the thickness of the heat insulation component 21 is within a reasonable range, it can not only prevent the heat and exhaust gases from the engine 200 from damaging the surrounding components and prevent heat from being transferred to the passenger compartment, but also reduce the weight of the exhaust manifold assembly 100. For example, the thickness of the heat insulation component 21 can be 4mm, 5mm, or 6mm, with the specific value selected according to the actual situation.

[0047] Optionally, the thickness of the protective component 22 is h2, where h2 satisfies the relationship: 0.12mm≤h2≤0.18mm.

[0048] In other words, the thickness of the protective component 22 must be within a reasonable range. If the thickness of the protective component 22 is less than 0.12mm, its strength will be insufficient, potentially damaging the heat insulation component 21 and compromising its service life. If the thickness of the protective component 22 is greater than 0.12mm, excessive material will be used, resulting in a heavier component that cannot meet the lightweight design requirements of the exhaust manifold assembly 100. A thickness within a reasonable range not only ensures the heat insulation component 21 is not damaged but also reduces the weight of the exhaust manifold assembly 100. For example, the thickness of the protective component 22 can be 0.13mm, 0.15mm, or 0.17mm, with the specific value chosen based on the actual situation.

[0049] Specifically, the heat insulation component 21 is made of high-silica fiber cotton, and the protective component 22 is made of stainless steel. The heat insulation efficiency of the high-silica fiber cotton is over 75%, which can block the heat and exhaust gas of the engine 200 from damaging the surrounding components and prevent heat from being transferred to the passenger compartment. The stainless steel component is made of stainless steel plate, which can ensure that the heat insulation component 21 is not damaged and can also reduce the weight of the exhaust manifold assembly 100.

[0050] As shown in the figure, the engine assembly according to this utility model includes: an engine 200 and an exhaust manifold assembly 100 as described in the above embodiment. The engine 200 has an exhaust port, and the exhaust manifold 10 is connected to the exhaust port. This arrangement allows the heat and exhaust gas generated by the engine 200 to enter the exhaust manifold 10 through the exhaust port and then be discharged to the outside of the vehicle through the exhaust manifold 10, thereby reducing heat radiation to the occupants and improving their comfort.

[0051] The vehicle according to this utility model includes: the engine assembly of the above embodiments. By providing a heat insulation member 21 on the outer periphery of the exhaust manifold 10 and a protective member 22 covering the outer periphery of the heat insulation member 21, the heat insulation member 21 blocks the heat dissipation of the exhaust manifold 10, and the protective member 22 can protect the heat insulation member 21 from damage. In this way, the heat insulation member 21 and the protective member 22 can completely cover the outer periphery of the exhaust manifold 10, thereby reducing the space occupied by the heat insulation member 21 and the protective member 22, reducing the weight of the exhaust manifold assembly 100, and improving the heat insulation effect of the heat insulation member 21 on the exhaust manifold 10, thereby achieving a lightweight design of the exhaust manifold assembly 100.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0053] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An exhaust manifold assembly (100), characterized in that, include: An exhaust manifold (10) includes a plurality of branch pipes (11); The heat insulation assembly (20) includes a heat insulation element (21) and a protective element (22), wherein the heat insulation element (21) covers the outer periphery of the plurality of branch pipes (11) and the protective element (22) covers the outer periphery of the heat insulation element (21).

2. The exhaust manifold assembly (100) according to claim 1, characterized in that, The protective component (22) has a first flange and a second flange at the outer periphery of any one of the branch pipes (11). The first flange and the second flange extend along the length direction of the protective component (22) and are joined together.

3. The exhaust manifold assembly (100) according to claim 1, characterized in that, The exhaust manifold (10) also includes: A main pipe (30) is connected to one end of one of the branch pipes (11); Flange (40), which is connected to the other end of the branch pipe (11); One end of the protective component (22) is connected to the main pipe (30) and the other end is connected to the flange (40).

4. The exhaust manifold assembly (100) according to claim 3, characterized in that, The protective component (22) has a third flange at one end and multiple fourth flanges at the other end. The third flange is connected to the main pipe (30), and the multiple fourth flanges are respectively connected to the flange (40).

5. The exhaust manifold assembly (100) according to claim 3, characterized in that, There are multiple flanges (40), and the multiple flanges (40) are connected to the multiple branch pipes (11) in a one-to-one correspondence, and the multiple flanges (40) are distributed at intervals.

6. The exhaust manifold assembly (100) according to claim 3, characterized in that, The heat insulation component (20) is provided with a through hole penetrating the heat insulation member (21) and the protective member (22); The main pipe (30) is provided with a mounting protrusion (31), which passes through the through hole and is adapted to be connected to the cylinder head cover (210) via a bracket (50).

7. The exhaust manifold assembly (100) according to claim 3, characterized in that, The branch pipe (11) is a stainless steel pipe, the main pipe (30) is a cast steel pipe, and the flange (40) is a cast steel flange (40).

8. The exhaust manifold assembly (100) according to claim 1, characterized in that, The thickness of the heat insulation component (21) is h1, and h1 satisfies the following relationship: 4mm ≤ h1 ≤ 6mm; and / or The thickness of the protective component (22) is h2, which satisfies the following relationship: 0.12mm ≤ h2 ≤ 0.18mm; and / or The heat insulation component (21) is a high-silica fiber cotton component, and the protective component (22) is a stainless steel component.

9. An engine assembly, characterized in that, include: An engine (200) having an exhaust port; The exhaust manifold assembly (100) according to any one of claims 1-8, wherein the exhaust manifold (10) is in communication with the exhaust port.

10. A vehicle, characterized in that, include: The engine assembly as described in claim 9.

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