Exhaust manifold assembly, engine and vehicle

Abstract

The invention discloses an exhaust manifold assembly, an engine and a vehicle. The exhaust manifold assembly comprises an exhaust manifold and a heat shield. The exhaust manifold comprises at least one branch pipe and a collecting pipe, the branch pipe is provided with an air inlet, the collecting pipe is provided with an air outlet, and the air inlet is communicated with the air outlet. The heat insulation cover is arranged on the peripheral wall of the exhaust manifold and comprises a plurality of heat insulation parts which are arranged in a split mode, and the heat insulation parts correspond to the branch pipes and the collecting pipes respectively. According to the exhaust manifold, the heat insulation cover is arranged on the peripheral wall of the exhaust manifold and comprises the multiple heat insulation parts which are arranged in a split mode, the multiple heat insulation parts correspond to the branch pipes and the collecting pipes correspondingly, the multiple heat insulation parts which are arranged in a split mode can prevent the overall size of the heat insulation cover from being too large, resonance between the heat insulation cover and the exhaust manifold is effectively restrained, and the heat insulation effect is improved. Therefore, the overall mode of the heat shield can be improved, the possibility of vibration damage of the heat shield is reduced, and the service life of the heat shield is prolonged.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more particularly, to an exhaust manifold assembly, an engine, and a vehicle. Background Art

[0002] The exhaust manifold is a structure used to transport exhaust gas emitted when the engine is working. During the process of exhaust gas transportation by the exhaust manifold, the heat carried by the exhaust gas will heat the exhaust manifold. In the related art, due to the limitations of the interior space of the vehicle, components are also arranged around the exhaust manifold. Usually, in order to reduce the heat damage of the exhaust manifold to the surrounding components, a heat shield is provided outside the exhaust manifold. However, due to the large size of the exhaust manifold, in order to improve the heat insulation effect of the heat shield, the overall size of the heat shield is also designed to be large. When subjected to vibration, the heat shield is prone to resonate with the exhaust manifold, affecting the overall mode of the heat shield, and the heat shield is prone to deformation and damage. Summary of the Invention

[0003] Embodiments of the present application provide an exhaust manifold assembly, an engine, and a vehicle.

[0004] An exhaust manifold assembly according to an embodiment of the present application includes an exhaust manifold and a heat shield. The exhaust manifold includes at least one branch pipe and a manifold. The branch pipe has an air inlet, and the manifold has an air outlet, the air inlet and the air outlet communicating with each other. The heat shield is disposed on the outer peripheral wall of the exhaust manifold and includes multiple separate heat insulation sections, each corresponding to the branch pipe and the manifold.

[0005] In certain embodiments, the heat shield has a contour shape that is the same as a contour shape of the exhaust manifold.

[0006] In certain embodiments, in a direction perpendicular to the central axis of the exhaust manifold, the heat insulating portion includes a first sub-portion and a second sub-portion connected to each other, and contour shapes of the first sub-portion and the second sub-portion are the same as the contour shape of the exhaust manifold.

[0007] In certain embodiments, the heat shield includes a mounting layer and a heat insulation layer. The mounting layer is disposed around the outer peripheral wall of the exhaust manifold, and the heat insulation layer is disposed on a side of the mounting layer opposite to the exhaust manifold.

[0008] In some embodiments, the mounting layer is made of metal material.

[0009] In some embodiments, the thermal insulation layer is made of thermal insulation material.

[0010] In certain embodiments, the thermal insulation material includes at least one of ceramic fiber, glass fiber, glass wool, rock wool, and aerogel.

[0011] In certain embodiments, a spacing distance between the mounting layer and an outer peripheral wall of the exhaust manifold is greater than 5 mm.

[0012] In some embodiments, flanges are provided on the branch pipe and the collecting pipe, and the air inlet and the air outlet both pass through the flanges; along the direction of the central axis of the exhaust manifold, the thermal insulation part includes a first connecting end and a second connecting end relative to each other, the first connecting end of the thermal insulation part is connected to the flange, and the second connecting end of the thermal insulation part is connected to the second connecting end of the other thermal insulation part.

[0013] In certain embodiments, the exhaust manifold assembly further includes a connecting member, and the second connecting end of the heat insulating portion is connected to the second connecting end of another heat insulating portion via the connecting member.

[0014] In some embodiments, the second connection end of the thermal insulation portion bends and extends toward the exhaust manifold, and the distance between the thermal insulation portion and the exhaust manifold gradually decreases along the direction from the first connection end of the thermal insulation portion to the second connection end of the thermal insulation portion.

[0015] The engine according to the embodiment of the present application includes the exhaust manifold assembly described in any of the above embodiments.

[0016] A vehicle according to an embodiment of the present application includes the engine described in the above embodiment.

[0017] In the exhaust manifold assembly, engine, and vehicle of the embodiments of the present application, a heat shield is arranged on the outer peripheral wall of the exhaust manifold and includes a plurality of separately arranged heat shield portions, each of which corresponds to a branch pipe and a collecting pipe. The multiple separately arranged heat shield portions can prevent the overall size of the heat shield from being too large and effectively suppress resonance between the heat shield and the exhaust manifold. This can improve the overall modality of the heat shield, reduce the possibility of vibration damage to the heat shield, and extend the service life of the heat shield.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic structural diagram of an exhaust manifold assembly according to certain embodiments of the present application;

[0021] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the exhaust manifold assembly shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of a portion of the exhaust manifold assembly shown;

[0023] Figure 4 yes Figure 1 A schematic cross-sectional view of a portion of the exhaust manifold assembly shown;

[0024] Figure 5 It is a schematic structural diagram of a vehicle according to certain embodiments of the present application.

[0025] Description of main component symbols:

[0026] Vehicle 2000, body 2100, wheels 2200; engine 1000;

[0027] Exhaust manifold assembly 100;

[0028] Exhaust manifold 10, branch pipe 11, first branch pipe 113, second branch pipe 115, collecting pipe 13;

[0029] Heat insulation cover 20, heat insulation part 21, first sub-part 211, second sub-part 212, first connecting end 213, second connecting end 214, first heat insulation part 215, second heat insulation part 216, third heat insulation part 217, mounting layer 23, heat insulation layer 25;

[0030] Flange 30; connecting piece 40. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that the terms "center", "length", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0034] In this application, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] In related technologies, due to the limited interior space of the vehicle, components are also arranged around the exhaust manifold. Usually, to reduce the heat damage caused by the exhaust manifold to the surrounding components, a heat shield is installed outside the exhaust manifold. However, due to the large size of the exhaust manifold, the overall size of the heat shield is designed to be larger to improve the heat insulation effect. When subjected to vibration, the heat shield is prone to resonate with the exhaust manifold, affecting the overall mode of the heat shield and causing deformation and damage to the heat shield. To solve the above problem, please refer to Figure 5 , an embodiment of the present application provides an exhaust manifold assembly 100 , an engine 1000 and a vehicle 2000 .

[0037] See also Figure 1 and Figure 2The exhaust manifold assembly 100 according to an embodiment of the present application includes an exhaust manifold 10 and a heat shield 20. The exhaust manifold 10 includes at least one branch pipe 11 and a manifold 13. The branch pipe 11 has an air inlet, and the manifold 13 has an air outlet, with the air inlet and the air outlet communicating with each other. The heat shield 20 is disposed on the outer peripheral wall of the exhaust manifold 10 and includes multiple separate heat shields 21, each corresponding to one of the branch pipes 11 and the manifold 13.

[0038] The exhaust manifold 10 is a device for Figure 5 The exhaust manifold 10 is a structure for introducing the exhaust gas generated by the operation of the cylinders (as shown) to the outside of the engine 1000. The material of the exhaust manifold 10 includes but is not limited to cast iron and stainless steel. In certain embodiments of the present application, the exhaust manifold 10 includes at least one branch pipe 11 and a collecting pipe 13, the branch pipe 11 is provided with an air inlet, the collecting pipe 13 is provided with an air outlet, and the air inlet and the air outlet are connected. Specifically, the air inlet is connected to the corresponding cylinder, and the exhaust gas generated by the cylinder can flow into the exhaust manifold 10 through the air inlet and flow out of the exhaust manifold 10 through the air outlet. In this way, the exhaust manifold 10 can guide the exhaust gas generated by the operation of the cylinder to the outside of the engine 1000. In one example, the quantitative relationship between the branch pipe 11 and the cylinder can be one-to-one, or one-to-many, that is, one branch pipe 11 corresponds to one cylinder, or one branch pipe 11 corresponds to multiple cylinders.

[0039] For example, in some embodiments, the exhaust manifold 10 includes a plurality of branch pipes 11 , which can reduce exhaust interference between cylinders, improve exhaust efficiency, and enhance the performance of the engine 1000 .

[0040] The heat shield 20 is a structure used to block heat transfer between the exhaust manifold 10 and the outside world. In certain embodiments of the present application, the heat shield 20 is disposed on the outer peripheral wall of the exhaust manifold 10 and includes multiple insulation portions 21, each corresponding to the branch pipes 11 and the manifold 13. In this way, the heat shield 20 can fully enclose the exhaust manifold 10, thereby improving thermal insulation performance, reducing heat damage to surrounding components from the exhaust manifold 10, ensuring stable and reliable operation of surrounding components, and extending the service life of surrounding components.

[0041] Optionally, the quantitative relationship between the heat insulating portion 21 and the branch pipe 11 may be one-to-one, that is, one heat insulating portion 21 corresponds to one branch pipe 11 .

[0042] Optionally, the quantity relationship between the insulation part 21 and the branch pipes 11 can be one-to-many, that is, one insulation part 21 corresponds to multiple branch pipes 11. For example, Figure 2 As shown, one heat insulation portion 21 corresponds to two branch pipes 11 , which can reduce the number of parts of the heat insulation cover 20 and improve the assembly efficiency of the heat insulation cover 20 .

[0043] In certain embodiments, multiple heat shields 21 are provided in separate parts. This increases the number of fixing points for the heat shield 20 compared to a single-piece structure. This effectively suppresses resonance between the heat shield 20 and the exhaust manifold 10, thereby improving the overall modal response of the heat shield 20, reducing the likelihood of vibration damage to the heat shield 20 and extending its service life. Furthermore, when the heat shield 20 is subjected to vibration, the interaction between the multiple heat shields 21 can partially offset the vibration, thereby also improving the overall modal response of the heat shield 20.

[0044] In one example, the plurality of heat shields 20 may be connected together using a detachable connection. Such detachable connection methods include, but are not limited to, threaded connections or snap connections. In another example, the plurality of heat shields 20 may be connected together using a non-detachable connection method. Such non-detachable connection methods include, but are not limited to, welding or bonding.

[0045] In the exhaust manifold assembly 100 of the embodiment of the present application, the heat shield 20 is arranged on the outer peripheral wall of the exhaust manifold 10 and includes a plurality of separately arranged heat shield portions 21. The plurality of separately arranged heat shield portions 21 correspond to the branch pipes 11 and the collecting pipe 13, respectively. The plurality of separately arranged heat shield portions 21 can prevent the overall size of the heat shield 20 from being too large and effectively suppress the resonance between the heat shield 20 and the exhaust manifold 10. This can improve the overall mode of the heat shield 20, reduce the possibility of vibration damage to the heat shield 20, and extend the service life of the heat shield 20.

[0046] In addition, compared with the integral structure of the heat shield 20 , the separate configuration of the plurality of heat insulation portions 21 can also facilitate the installation of the heat insulation portions 21 on the exhaust manifold 10 , thereby improving the assembly efficiency of the exhaust manifold assembly 100 .

[0047] The exhaust manifold assembly 100 will be further described below with reference to the accompanying drawings.

[0048] See also Figure 1 and Figure 2 In some embodiments, the heat shield 20 has the same profile as the exhaust manifold 10. This not only makes the heat shield 20 and exhaust manifold 10 more compact, thereby facilitating miniaturization of the exhaust manifold assembly 100, but also reduces the possibility of interference between the exhaust manifold assembly 100 and surrounding components, ensuring proper assembly of the exhaust manifold assembly 100.

[0049] Specifically, in some embodiments, the profile of the heat shield 20 is the same as that of the exhaust manifold 10, that is, the shape, size, and profile of the heat shield 20 are completely or substantially the same as the shape, size, and profile of the outer peripheral wall of the exhaust manifold 10. For example, when the outer peripheral wall of the exhaust manifold 10 is cylindrical, the shape of the heat shield 20 is also cylindrical.

[0050] It is understood that in some embodiments, the profiles of the multiple heat shields 20 may differ from one another. Specifically, when the heat shield 20 corresponds to a branch pipe 11, the profile of the heat shield 20 is identical to the profile of the branch pipe 11; when the heat shield 20 corresponds to a manifold 13, the profile of the heat shield 20 is identical to the profile of the manifold 13. It should be noted that in some embodiments, when a heat shield 20 corresponds to two or more branch pipes 11, the profile of the heat shield 20 is identical to the profile formed by the two or more branch pipes 11.

[0051] See also Figure 2 In some embodiments, in a direction perpendicular to the central axis of the exhaust manifold 10 , the heat insulating portion 21 includes a first sub-portion 211 and a second sub-portion 212 connected to each other, and the contour shapes of the first sub-portion 211 and the second sub-portion 212 are the same as the contour shape of the exhaust manifold 10 .

[0052] Specifically, in certain embodiments, the central axis of the exhaust manifold 10 includes the central axis of the branch pipe 11 and the central axis of the manifold 13, and both the central axis of the branch pipe 11 and the central axis of the manifold 13 may be curved. The provision of the first sub-portion 211 and the second sub-portion 212 facilitates the installation of the heat shield 21 on the exhaust manifold 10, thereby improving the assembly efficiency of the exhaust manifold assembly 100. Furthermore, the provision prevents the heat shield 20 from forming a large planar structure, thereby suppressing resonance between the heat shield 20 and the exhaust manifold 10, thereby improving the overall modal characteristics of the heat shield 20, reducing the likelihood of vibration damage to the heat shield 20, and extending the service life of the heat shield 20.

[0053] In some embodiments, the first sub-section 211 and the second sub-section 212 may be connected together using a detachable connection, wherein the detachable connection includes but is not limited to a threaded connection or a snap connection. In other embodiments, the first sub-section 211 and the second sub-section 212 may be connected together using a non-detachable connection, wherein the non-detachable connection includes but is not limited to welding or bonding.

[0054] Please combine Figure 3In one embodiment of the present application, the heat shield 20 includes three separately provided heat insulating portions 21 (hereinafter referred to as a first heat insulating portion 215, a second heat insulating portion 216, and a third heat insulating portion 217). The three heat insulating portions 21 correspond to the branch pipes 11 and the manifold 13, respectively. The first heat insulating portion 215 corresponds to the integral branch pipe formed by the two branch pipes 11 (hereinafter referred to as the first branch pipe 113), the second heat insulating portion 216 corresponds to the integral branch pipe formed by the two branch pipes 11 (hereinafter referred to as the second branch pipe 115), and the third heat insulating portion 217 corresponds to the manifold 13.

[0055] Specifically, the first insulating portion 215, the second insulating portion 216, and the third insulating portion 217 each include a first sub-portion 211 and a second sub-portion 212 connected to each other. The first sub-portion 211 and the second sub-portion 212 of the first insulating portion 215 have the same outline shape as the first branch pipe 113; the first sub-portion 211 and the second sub-portion 212 of the second insulating portion 216 have the same outline shape as the second branch pipe 115; and the first sub-portion 211 and the second sub-portion 212 of the third insulating portion 217 have the same outline shape as the manifold 13.

[0056] See also Figure 2 and Figure 4 In some embodiments, the heat shield 20 includes a mounting layer 23 and a heat insulating layer 25 . The mounting layer 23 is disposed around the outer peripheral wall of the exhaust manifold 10 , and the heat insulating layer 25 is disposed on a side of the mounting layer 23 opposite to the exhaust manifold 10 .

[0057] Specifically, in some embodiments, the contour shape of the mounting layer 23 is the same as or substantially the same as the contour shape of the exhaust manifold 10. When the mounting layer 23 is disposed on the outer peripheral wall of the exhaust manifold 10, a gap is formed between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10. This can reduce vibration transmission, reduce the possibility of damage to the heat shield 20 due to vibration, and extend the service life of the heat shield 20.

[0058] Furthermore, in some embodiments, the mounting layer 23 is made of a metal material. This improves the rigidity of the mounting layer 23, reduces the likelihood of damage (e.g., deformation or breakage) to the heat shield 20 when subjected to vibration, and extends the service life of the heat shield 20. It should be noted that in some embodiments, metal materials include, but are not limited to, steel, iron, aluminum, and stainless steel.

[0059] In some embodiments, the thermal insulation layer 25 is made of a thermal insulation material. Specifically, in some embodiments, the thermal insulation material includes at least one of ceramic fiber, glass fiber, glass wool, rock wool, and aerogel.

[0060] For example, in some embodiments of the present application, the heat insulating material may be glass wool, that is, the heat insulating layer 25 is made of glass wool. Figure 5 During long-term operation (as shown in the figure), the provision of the heat insulation material can prevent the mounting layer 23 from colliding with the exhaust manifold 10, thereby effectively reducing the radiation noise during the vibration of the exhaust manifold 10 and improving the NVH (Noise, Vibration, Harshness) performance of the engine 1000; on the other hand, it can avoid damage to the heat insulation cover 20 caused by long-term vibration fatigue, thereby ensuring the heat insulation effect of the heat insulation cover 20.

[0061] See also Figure 2 and Figure 4 In some embodiments, the spacing distance L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is greater than 5 mm. Specifically, in some embodiments, the spacing distance L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is any one of values greater than 5 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, and 15 mm, or any value between any two of these values.

[0062] If the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is less than 5 mm, there is less space for the installation of the heat insulating material, which will result in the heat insulating material being unable to suppress the collision between the mounting layer 23 and the exhaust manifold 10, thereby affecting the engine 1000 ( Figure 5 In certain embodiments of the present application, the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is greater than 5 mm, thereby ensuring space for the installation of the thermal insulation material and effectively suppressing collision between the mounting layer 23 and the exhaust manifold 10, thereby effectively reducing the radiation noise when the exhaust manifold 10 vibrates and improving the NVH performance of the engine 1000.

[0063] Furthermore, in some embodiments, the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is greater than 5 mm and less than 15 mm. Specifically, in some embodiments, the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is any one of 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, and 15 mm, or any value between any two of these values.

[0064] If the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is less than 5 mm, there is less space for the thermal insulation material to be installed, resulting in the thermal insulation material being unable to suppress collisions between the mounting layer 23 and the exhaust manifold 10, thereby affecting the NVH performance of the engine 1000. If the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is greater than 15 mm, the size of the heat shield 20 is larger, causing the heat shield 20 to easily interfere with surrounding components of the exhaust manifold assembly 100, affecting the proper assembly of the heat shield 20. In certain embodiments of the present application, the spacing L between the mounting layer 23 and the outer peripheral wall of the exhaust manifold 10 is greater than 5 mm and less than 15 mm. This can effectively reduce the radiated noise during vibration of the exhaust manifold 10 and improve the NVH performance of the engine 1000. It can also prevent the heat shield 20 from interfering with surrounding components of the exhaust manifold assembly 100, thereby ensuring proper assembly of the heat shield 20.

[0065] See also Figure 2 and Figure 3 In some embodiments, flanges 30 are provided on both the branch pipe 11 and the manifold 13, and both the air inlet and the air outlet extend through the flanges 30. Specifically, in some embodiments, the branch pipe 11 can be connected to the cylinder via the flanges 30, and the manifold 13 can be connected to the exhaust manifold via the flanges 30. The provision of flanges 30 increases the connection area between the branch pipe 11 and the cylinder, as well as the connection area between the manifold 13 and the exhaust manifold, thereby improving the stability of the connection and, in turn, the operational stability and reliability of the exhaust manifold assembly 100.

[0066] See also Figures 1 to 3 In some embodiments, along the direction of the central axis of the exhaust manifold 10, the insulation portion 21 includes a first connection end 213 and a second connection end 214 relative to each other, the first connection end 213 of the insulation portion 21 is connected to the flange 30, and the second connection end 214 of the insulation portion 21 is connected to the second connection end 214 of other insulation portions 21.

[0067] Therefore, each heat insulation part 21 is fixed at least two places, that is, one is the connection and fixation between the first connection end 213 and the flange 30, and the other is the connection and fixation between the second connection end 214 and the other second connection end 214, so as to increase the constraint area, effectively suppress the resonance between the heat insulation cover 20 and the exhaust manifold 10, and then improve the overall mode of the heat insulation cover 20, reduce the possibility of vibration damage to the heat insulation cover 20, and extend the service life of the heat insulation cover 20.

[0068] It should be noted that, in some embodiments, the insulation portion 21 (ie, the third insulation portion 217 ) corresponding to the manifold 13 may be Y-shaped. In this case, the insulation portion 21 corresponding to the manifold 13 may include two second connection ends 214 .

[0069] In some embodiments, the second connection end 214 of the heat insulating portion 21 can be connected to the second connection end 214 of the other heat insulating portion 21 by a detachable connection or a non-detachable connection. Detachable connection methods include, but are not limited to, threaded connections or snap connections; non-detachable connection methods include, but are not limited to, welding or bonding.

[0070] See also Figure 1 and Figure 2 In certain embodiments of the present application, the exhaust manifold assembly 100 further includes a connector 40, through which the second connecting end 214 of the heat insulating portion 21 is connected to the second connecting end 214 of the other heat insulating portion 21. It should be noted that in certain embodiments, the connector 40 may be a metal strap. In one example, the second connecting end 214 of the heat insulating portion 21 and the second connecting end 214 of the other heat insulating portion 21 are both welded to the metal strap.

[0071] In some embodiments, the second connection end 214 of the insulation portion 21 bends and extends toward the exhaust manifold 10 , and the distance between the insulation portion 21 and the exhaust manifold 10 gradually decreases along the direction from the first connection end 213 of the insulation portion 21 to the second connection end 214 of the insulation portion 21 .

[0072] Specifically, in some embodiments, the second connection end 214 of the heat insulation portion 21 can abut against the outer peripheral wall of the exhaust manifold 10. In this way, when the heat insulation portion 21 is provided on the outer peripheral wall of the exhaust manifold 10, the exhaust manifold 10 can provide a certain constraint for the heat insulation portion 21, thereby improving the overall mode of the heat insulation cover 20, reducing the possibility of vibration damage to the heat insulation cover 20, and extending the service life of the heat insulation cover 20.

[0073] See also Figure 1 and Figure 5 The engine 1000 of the embodiment of the present application includes an exhaust manifold assembly 100. It should be noted that, in some embodiments, the engine 1000 includes but is not limited to an inline engine, a V-type engine, a W-type engine, and a horizontally opposed engine.

[0074] It will be appreciated that in certain embodiments, engine 1000 further includes an intake manifold, a cylinder, and a crankshaft-connecting rod mechanism. The crankshaft-connecting rod mechanism includes a crankshaft, a connecting rod, and a piston. The piston is disposed within the cylinder and is capable of reciprocating relative to the cylinder. The connecting rod is connected to both the piston and the crankshaft. When the piston reciprocates relative to the cylinder, the connecting rod can move along with the piston to drive the crankshaft. Specifically, the intake manifold allows outside air to enter the cylinder of engine 1000, so that fuel and outside air mix and then burn within the cylinder. The high-temperature, high-pressure gas generated by the combustion propels the piston to reciprocate, thereby converting the piston's linear motion into rotational motion through the connecting rod and crankshaft, thereby achieving power output. After the high-temperature, high-pressure gas propels the piston, its pressure decreases, and the gas (i.e., the exhaust gas described above) can be discharged from the cylinder through exhaust manifold assembly 100.

[0075] Furthermore, in certain embodiments, the engine 1000 further includes an exhaust manifold, which is in communication with the exhaust manifold 10 and is capable of receiving gas from the exhaust manifold 10 and directing it outside the vehicle 2000. The exhaust manifold may be provided with a catalytic converter and a muffler, the catalytic converter being used to reduce exhaust pollution, and the muffler being used to reduce exhaust noise.

[0076] In the engine 1000 of the embodiment of the present application, the heat shield 20 is arranged on the outer peripheral wall of the exhaust manifold 10 and includes a plurality of separately arranged heat shield portions 21. The plurality of separately arranged heat shield portions 21 correspond to the branch pipes 11 and the collecting pipe 13, respectively. The plurality of separately arranged heat shield portions 21 can prevent the overall size of the heat shield 20 from being too large and effectively suppress the resonance between the heat shield 20 and the exhaust manifold 10. This can improve the overall modality of the heat shield 20, reduce the possibility of vibration damage to the heat shield 20, and extend the service life of the heat shield 20.

[0077] In addition, compared with the integral structure of the heat shield 20 , the separate configuration of the plurality of heat insulation portions 21 can also facilitate the installation of the heat insulation portions 21 on the exhaust manifold 10 , thereby improving the assembly efficiency of the exhaust manifold assembly 100 .

[0078] See also Figure 1 and Figure 5 The vehicle 2000 of the embodiment of the present application includes an engine 1000. It should be noted that, in some embodiments, the vehicle 2000 includes but is not limited to passenger vehicles such as pure electric vehicles and hybrid vehicles or large-scale engineering vehicles with less severe working conditions.

[0079] Furthermore, in certain embodiments, vehicle 2000 further includes a body 2100 and wheels 2200. Wheels 2200 are disposed on body 2100 and are capable of moving relative to body 2100 to enable movement of vehicle 2000 (e.g., forward, backward, or steering). Engine 1000 is disposed on body 2100 and connected to wheels 2200. When engine 1000 is operating stably, engine 1000 can provide power for the movement of wheels 2200.

[0080] In the vehicle 2000 of the embodiment of the present application, the heat shield 20 is arranged on the outer peripheral wall of the exhaust manifold 10 and includes a plurality of separately arranged heat shield portions 21. The plurality of separately arranged heat shield portions 21 correspond to the branch pipes 11 and the collecting pipe 13, respectively. The plurality of separately arranged heat shield portions 21 can prevent the overall size of the heat shield 20 from being too large and effectively suppress the resonance between the heat shield 20 and the exhaust manifold 10. This can improve the overall mode of the heat shield 20, reduce the possibility of vibration damage to the heat shield 20, and extend the service life of the heat shield 20.

[0081] In addition, compared with the integral structure of the heat shield 20 , the separate configuration of the plurality of heat insulation portions 21 can also facilitate the installation of the heat insulation portions 21 on the exhaust manifold 10 , thereby improving the assembly efficiency of the exhaust manifold assembly 100 .

[0082] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there are no conflicts in the combination of these technical features, they should be considered to be within the scope of this specification. Furthermore, other implementations can be derived from the above-described embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0083] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An exhaust manifold assembly (100), characterized in that: include: An exhaust manifold (10), the exhaust manifold (10) comprising at least one branch pipe (11) and a collecting pipe (13), the branch pipe (11) being provided with an air inlet, the collecting pipe (13) being provided with an air outlet, the air inlet being in communication with the air outlet; and A heat insulation cover (20) is provided on the outer peripheral wall of the exhaust manifold (10) and includes a plurality of heat insulation parts (21) provided separately, wherein the plurality of heat insulation parts (21) respectively correspond to the branch pipes (11) and the collecting pipe (13).

2. The exhaust manifold assembly (100) according to claim 1, characterized in that: The outline shape of the heat shield (20) is the same as the outline shape of the exhaust manifold (10).

3. The exhaust manifold assembly (100) according to claim 1, characterized in that: In a direction perpendicular to the central axis of the exhaust manifold (10), the heat insulating portion (21) includes a first sub-portion (211) and a second sub-portion (212) connected to each other, and the contour shapes of the first sub-portion (211) and the second sub-portion (212) are the same as the contour shape of the exhaust manifold (10).

4. The exhaust manifold assembly (100) according to claim 1, characterized in that The heat insulation cover (20) comprises a mounting layer (23) and a heat insulation layer (25), wherein the mounting layer (23) is arranged around the outer peripheral wall of the exhaust manifold (10), and the heat insulation layer (25) is arranged on a side of the mounting layer (23) opposite to the exhaust manifold (10).

5. The exhaust manifold assembly (100) according to claim 4, characterized in that: The mounting layer (23) is made of metal material; and / or The heat insulation layer (25) is made of heat insulation material.

6. The exhaust manifold assembly (100) according to claim 5, characterized in that: The thermal insulation material includes at least one of ceramic fiber, glass fiber, glass wool, rock wool, and aerogel.

7. The exhaust manifold assembly (100) according to claim 4, characterized in that: The spacing distance between the mounting layer (23) and the outer peripheral wall of the exhaust manifold (10) is greater than 5 mm.

8. The exhaust manifold assembly (100) according to claim 1, characterized in that: The branch pipe (11) and the collecting pipe (13) are both provided with flanges (30), and the air inlet and the air outlet both pass through the flanges (30); along the direction of the central axis of the exhaust manifold (10), the heat insulation part (21) includes a first connecting end (213) and a second connecting end (214) relative to each other, the first connecting end (213) of the heat insulation part (21) is connected to the flange (30), and the second connecting end (214) of the heat insulation part (21) is connected to the second connecting end (214) of the other heat insulation part (21).

9. The exhaust manifold assembly (100) according to claim 8, characterized in that: The exhaust manifold assembly (100) further includes a connecting member (40), and the second connecting end (214) of the heat insulating portion (21) is connected to the second connecting end (214) of the other heat insulating portion (21) via the connecting member (40).

10. The exhaust manifold assembly (100) according to claim 8, characterized in that: The second connection end (214) of the heat insulation part (21) bends and extends toward the exhaust manifold (10), and the distance between the heat insulation part (21) and the exhaust manifold (10) gradually decreases along the direction from the first connection end (213) of the heat insulation part (21) to the second connection end (214) of the heat insulation part (21).

11. An engine (1000), characterized in that: include: The exhaust manifold assembly (100) according to any one of claims 1 to 10.

12. A vehicle (2000), characterized in that: include: The engine (1000) as claimed in claim 11.

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