Engine bonnet, engine and vehicle

Abstract

The application discloses an engine front cover, an engine and a vehicle. The engine front cover comprises a front cover body, the front cover body has an inner side surface part, at least one reinforcing rib is arranged on the inner side surface part, the front cover body is provided with at least two mounting parts, and at least one reinforcing rib is arranged between any two mounting parts. The engine front cover can reduce the radiation noise of the engine and reduce the structural vibration transmission through structure optimization.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an engine hood, an engine, and a vehicle. Background Technology

[0002] As customers' demands for driving experience continue to increase, developing hybrid or range-extended engines that provide a near-pure electric NVH (Noise, Vibration, Harshness) experience has become a development trend.

[0003] Engine noise is primarily radiated through cover-like components. The engine cover, also known as the timing cover, is typically installed at the front of the engine and is a part that mates with the cylinder block, crankcase, and cylinder head. Optimizing the engine cover to reduce radiated engine noise and minimize structural vibration transmission to the vehicle body is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this application is to provide an engine hood, an engine, and a vehicle, wherein the engine hood, through structural optimization, can reduce engine radiated noise and reduce structural vibration transmission.

[0005] To solve the above-mentioned technical problems, this application provides an engine front cover, including a front cover body, the front cover body having an inner side portion, the front cover body having at least one reinforcing rib on the inner side portion, the front cover body having at least two mounting portions, and at least one reinforcing rib connecting any two mounting portions.

[0006] In one possible implementation, there are three or more mounting parts, with at least three of the mounting parts arranged in a triangular pattern.

[0007] In one possible implementation, the mounting part has bolt holes with a diameter of 8.2-12 mm.

[0008] In one possible implementation, the mounting portion includes a boss portion that protrudes toward the side where the inner surface portion is located.

[0009] In one possible implementation, at least some of the reinforcing ribs are provided with reinforcing protrusions; and / or, the width of the reinforcing rib is 3-8 mm, and the height of the reinforcing rib is not less than 3 mm.

[0010] In one possible implementation, the front cover body has an outer surface, and the front cover body is provided with a suspension mounting platform that protrudes toward the side where the outer surface is located. The suspension mounting platform is located in the middle region of the front cover body, and the mounting part is provided above and below the suspension mounting platform.

[0011] In one possible implementation, the engine cover is a single-piece casting.

[0012] In one possible implementation, the average wall thickness of the front cover body is 3-4 mm.

[0013] In one possible implementation, each of the mounting portions is circumferentially connected with a plurality of the reinforcing ribs.

[0014] This application also provides an engine, including the engine front cover described in any of the above embodiments.

[0015] This application also provides a vehicle, including the engine described above or the engine hood described in any of the above embodiments.

[0016] The engine hood provided in this application embodiment can be used in an engine, which can be used in a vehicle. The engine hood body, through the addition of reinforcing ribs, improves structural strength and rigidity. At least one reinforcing rib connects any two mounting parts, ensuring stability after the hood body is installed with the engine. This helps reduce the transmission of structural vibrations to the vehicle body. The mounting parts and reinforcing ribs work together to divide the hood body into several relatively small areas, avoiding relatively large-scale planar resonance. This structural design of the hood body reduces the probability of noise generation due to resonance between the engine hood and the engine, reduces engine radiated noise, and minimizes the transmission of structural vibrations to the vehicle body, thus improving the engine's NVH performance. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the engine hood from one perspective in the embodiments provided in this application;

[0018] Figure 2 This is a structural diagram of the engine hood from another perspective in the embodiments provided in this application;

[0019] Figure 3 for Figure 1 A partial structural diagram of the bottom area of ​​the engine hood is shown.

[0020] Figure 4 for Figure 2 A partial structural diagram of the bottom area of ​​the engine hood is shown.

[0021] Figure 5 This is a partial structural diagram of the engine hood in the area where the suspension platform is located in the embodiments provided in this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] The front cover body 10 has an inner side surface 10A and an outer side surface 10B.

[0024] Reinforcing rib 11, reinforcing protrusion 111;

[0025] Mounting part 12, bolt hole 121, boss part 122;

[0026] Suspended mounting platform 13, mounting hole 131, support rib 132;

[0027] 141. Annular protrusion, 142. Radial rib, 143. Boss, 144. Fan-shaped recess, 145. Connecting rib, 146. Arc-shaped reinforcing rib;

[0028] The cavity includes a cavity 15, a cavity bottom wall 151, and a cavity side wall 152.

[0029] Arc-shaped groove 16, bolt mounting boss 17. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The ordinal numbers used in this article, such as first and second, are used to distinguish different parts with the same name and do not indicate a specific order or primary / secondary relationship.

[0032] The directional terms used in this article, such as "top" and "bottom," are defined based on the position of the components in the drawing or the positional relationship between the components shown in the drawing. The use of directional terms is only for the clarity and convenience of describing the technical solution and does not constitute a limitation on the scope of protection.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of the engine hood from one perspective in the embodiments provided in this application. Figure 2 This is a structural diagram of the engine hood from another perspective in the embodiments provided in this application. Figure 1 The diagram shows the structure of the outer side of the engine hood. Figure 2 The diagram shows the structure of the inner side of the engine hood.

[0034] This application provides an engine front cover, also known as an engine timing cover. The engine front cover includes a cover body 10. The cover body 10 has an inner side portion 10A and an outer side portion 10B, which are disposed opposite to each other. The engine front cover is installed behind the engine, with the inner side portion 10A facing the engine surface and the outer side portion 10B facing away from the engine surface. It is understood that, with the engine front cover installed behind the engine, the outer side portion 10B of the cover body 10 is the visible surface.

[0035] The external profile of the front cover body 10 can be determined according to the design requirements of the engine. Figure 1 and Figure 2 This is merely an example, and no specific definition is made regarding the shape of the front cover body 10.

[0036] In this embodiment, the front cover body 10 of the engine front cover is provided with at least one reinforcing rib 11 on the inner side 10A, and the front cover body 10 is provided with at least two mounting parts 12, with at least one reinforcing rib 11 connecting any two mounting parts 12.

[0037] In application, the front cover body 10 can be connected and fixed to the cylinder head and cylinder block of the engine through the mounting part 12.

[0038] By adopting the above-mentioned scheme, the front hood body 10 can improve its structural strength and rigidity through the setting of reinforcing ribs 11. At least one reinforcing rib 11 connects any two mounting parts 12, ensuring the stability of the front hood body 10 after installation with the engine. This helps reduce the transmission of structural vibration to the entire vehicle body. The mounting parts 12 and reinforcing ribs 11 work together to divide the front hood body 10 into several relatively small areas, avoiding relatively large-scale planar resonance. This structural design of the front hood body 10 can reduce the probability of noise generated by resonance between the engine hood and the engine, reduce engine radiated noise, and reduce the transmission of structural vibration to the entire vehicle body, thus improving the engine's NVH performance.

[0039] In some implementation schemes, each mounting part 12 is connected with multiple reinforcing ribs 11 along the circumferential direction on its outer periphery, which can ensure the stability of the front cover body 10 after installation with the engine, thereby reducing the probability of noise generated by resonance between the engine front cover and the engine.

[0040] Each mounting part 12 has multiple reinforcing ribs 11 connected circumferentially around its outer periphery. This can be understood as multiple reinforcing ribs 11 extending in different directions converging and connecting to the same mounting part 12.

[0041] In some implementation schemes, some of the multiple reinforcing ribs 11 are arranged in an alternating manner. For example, some reinforcing ribs 11 extend in one direction, while others extend in another direction. The alternating arrangement of the reinforcing ribs 11 is beneficial to improving the structural strength of the front cover body 10 and improving the NVH performance of the engine. The extension direction of the reinforcing ribs 11 can be determined through simulation or experimentation.

[0042] Multiple bolt mounting bosses 17 are provided on the edge or outer periphery of the front cover body 10. These bolt mounting bosses 17 are used to fix the front cover body 10 to the engine block and cylinder head.

[0043] For example, one end of a portion of the reinforcing rib 11 extends to a bolt mounting boss 17 at the edge of the front cover body 10, and the other end extends to a mounting portion 12; or, both ends of the portion of the reinforcing rib 11 extend to two different bolt mounting bosses 17 at the edge of the front cover body 10, respectively. In other words, the reinforcing rib 11 needs to be connected to the bolt mounting boss 17 or the mounting portion 12 to improve the structural strength and rigidity of the front cover body 10.

[0044] In some implementations, the hood body 10 has three or more mounting portions 12, of which at least three mounting portions 12 are arranged in a triangular pattern. This allows the engine hood to be mounted behind the engine, improving installation stability and reliability, thereby reducing the transmission of structural vibrations to the entire vehicle body.

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, the front cover body 10 is provided with four mounting portions 12, and any three mounting portions 12 are arranged in a triangle. This can further improve the rigidity and strength of the connection between the front cover body 10 and the engine, which is beneficial to reducing radiated noise or vibration transmission.

[0046] The front cover body 10 includes a portion for covering the timing system of the engine, and a plurality of mounting portions 12 may be arranged generally in the central region of the portion covering the timing system to enhance the connection rigidity and connection strength between the central region of the front cover body 10 and the engine.

[0047] In the illustrated example, the four mounting parts 12 are arranged in a roughly quadrilateral shape, with one mounting part 12 at the top, two mounting parts 12 in the middle, and the last mounting part 12 at the bottom.

[0048] In other embodiments, the number, location, and specific arrangement of the mounting parts 12 can be set as needed, and are not limited to those shown in the figure.

[0049] In some implementations, the mounting section 12 has bolt holes 121, and the front cover body 10 can be fixedly connected to the engine block and cylinder head by bolts. This is both simple and convenient. The diameter of the bolt holes 121 can be matched with M8-M10 bolts, that is, the diameter of the bolt holes 121 can be in the range of 8.2-12mm, in order to increase the connection rigidity and strength.

[0050] In some implementations, the mounting portion 12 includes a boss portion 122 protruding towards the side where the inner side portion 10A is located. In application, bolt holes 121 are formed in the boss portion 122. This allows the bolt holes 121 to have a certain length, ensuring the reliability of the installation between the front cover body 10 and the engine, and also increases the structural strength at the location of the bolt holes 121.

[0051] In a specific implementation, the boss portion 122 can be formed by recessing from the outer surface portion 10B of the front cover body 10 towards the inner surface portion 10A.

[0052] like Figure 2 As shown, in some implementation schemes, at least some of the reinforcing ribs 11 are provided with reinforcing protrusions 111. The reinforcing protrusions 111 can prevent the reinforcing ribs 11 from deforming during the molding process of the front cover body 10, and to a certain extent, they also help to improve the structural strength of the front cover body 10.

[0053] For example, the reinforcing protrusion 111 may be provided in the middle region of a reinforcing rib 11 in the length direction.

[0054] For example, the reinforcing protrusion 111 can also be provided at the intersection of two reinforcing ribs 11.

[0055] The size of each reinforcing protrusion 111 can be the same or different.

[0056] In some implementation schemes, the width of the reinforcing rib 11 is 3-8mm, and the height of the reinforcing rib 11 is not less than 3mm. In this way, the structural strength of the front cover body 10 can be guaranteed while taking into account the weight of the front cover body 10.

[0057] Here, the width of the reinforcing rib 11 can be understood as its dimension in a direction approximately parallel to the inner surface portion 10A or the outer surface portion 10B. The height of the reinforcing rib 11 can be understood as its dimension in the direction normal to the inner surface portion 10A or the outer surface portion 10B.

[0058] Please refer to this as well. Figure 3 and Figure 4 , Figure 3 for Figure 1 A partial structural diagram of the bottom area of ​​the engine hood is shown. Figure 4 for Figure 2A partial structural diagram of the bottom area of ​​the engine hood is shown.

[0059] In this embodiment, the front cover body 10 is provided with an annular protrusion 141 that protrudes towards the side where the outer surface 10B is located. The annular protrusion 141 is located in the bottom area of ​​the front cover body 10, and a plurality of radially distributed ribs 142 are provided on the outer periphery of the annular protrusion 141.

[0060] The bottom area of ​​the front cover body 10 corresponds to the crankshaft of the engine.

[0061] Using the above scheme, the annular protrusion 141 and the radial rib 142 work together to break down the bottom area of ​​the front cover body 10, which can improve rigidity and reduce planar radiation noise.

[0062] The annular protrusion 141 is a continuously closed annular structure in the circumferential direction. In specific implementations, the annular protrusion 141 can be a circular structure or an approximately circular structure, etc.

[0063] In some implementations, multiple radial ribs 142 are arranged at intervals along a portion of the outer periphery of the annular protrusion 141, such as... Figure 3 As shown, radial ribs 142 are not provided on the entire outer periphery of the annular protrusion 141. Of course, in other implementations, depending on the actual layout, radial ribs 142 can be arranged on the entire outer periphery of the annular protrusion 141 if the structure allows.

[0064] In practice, the spacing between two adjacent radial ribs 142 along the circumferential direction is 15-25mm. This ensures the reduction of planar radiated noise. For example, the spacing between two adjacent radial ribs 142 can be 15mm, 17mm, 20mm, 22mm, or 25mm.

[0065] In practice, the width of the radial rib 142 is 2.5-3.5mm. This avoids material redundancy while still satisfying the requirements of increased stiffness and reduced radiated noise, thus saving costs. For example, the width of the radial rib 142 can be 2.5mm, 2.7mm, 2.9mm, 3mm, 3.2mm, or 3.5mm.

[0066] In other implementations, the spacing between two adjacent radial ribs 142 can be set to other distances as needed, such as 14mm or 27mm. The width of the radial ribs 142 can also be set to other dimensions as needed, not limited to the above range, such as 2.3mm or 3.7mm.

[0067] In some implementations, the width of the annular protrusion 141 is not less than 15mm, and the height of the annular protrusion 141 is 4-8mm. This design can effectively improve the strength and rigidity of the front cover body 10, and ensure the effect of reducing radiated noise.

[0068] The width of the radial rib 142 and the width of the annular protrusion 141 can be understood similarly to the width of the aforementioned reinforcing rib 11. The width of the annular protrusion 141 can also be understood as the radial dimension of the annular protrusion 141. The height of the annular protrusion 141 can be understood similarly to the height of the reinforcing rib 11.

[0069] Combination Figure 3 and Figure 4 In practical applications, the front cover body 10 may have a receiving cavity 15 recessed from the inner side surface 10A to the outer side surface 10B in the bottom area. The receiving cavity 15 includes a cavity bottom wall 151 and a cavity side wall 152. The outer surface of the cavity bottom wall 151 (i.e. the surface located on the same side as the outer side surface 10B) protrudes in a direction away from the inner side surface 10A to form the aforementioned annular protrusion 141.

[0070] The front cover body 10 may have an arc-shaped groove 16 formed on the outer periphery of the receiving cavity 15. The arc-shaped groove 16 may be formed by the outer surface portion 10B being recessed towards the inner surface portion 10A. The aforementioned radial rib 142 may be provided in the arc-shaped groove 16. One end of the radial rib 142 may be connected to the cavity sidewall portion 152 of the receiving cavity 15, and the other end may be connected to the front cover body 10. It can be understood that one sidewall of the arc-shaped groove 16 may be the cavity sidewall portion 152 of the receiving cavity 15.

[0071] In some implementation schemes, a boss 143 protruding towards the side of the outer face 10B is provided in the inner region of the annular protrusion 141. A plurality of fan-shaped recesses 144 arranged circumferentially are provided in the annular region between the boss 143 and the annular protrusion 141. The fan-shaped recesses 144 are recessed towards the side of the inner face 10A. A connecting rib 145 protruding towards the side of the outer face 10B is provided between two adjacent fan-shaped recesses 144.

[0072] After the above settings are implemented, the bottom area of ​​the front cover body 10 can be further fragmented, which helps to further reduce radiated noise while ensuring structural rigidity and strength.

[0073] In practical applications, the protruding outer surfaces of the boss 143 and the connecting rib 145 can be roughly flush with or slightly lower than the protruding outer surface of the annular protrusion 141.

[0074] In the illustrated scheme, the bottom area of ​​the front cover body 10 has four fan-shaped recesses 144, which are evenly arranged circumferentially, and the connecting ribs 145 form an approximately cross-shaped structure. In other implementation schemes, the number and arrangement of the fan-shaped recesses 144 can also be adjusted as needed.

[0075] In practice, the recess depth of the fan-shaped recess 144 can be 8-15mm, and the height of the connecting rib 145 and the boss 143 can also be 8-15mm. This design helps to effectively reduce radiated noise.

[0076] In some implementations, the front cover body 10 has an arc-shaped reinforcing rib 146 on its inner side 10A. The arc-shaped reinforcing rib 146 is located at the inner end of the radial rib 141 near the annular protrusion 141, and the radial rib 141 and the arc-shaped reinforcing rib 146 are connected in the corresponding area of ​​the outer side 10B. This can strengthen the connection between the radial rib 141 and the front cover body 10.

[0077] In practice, the width of the arc-shaped reinforcing rib 146 can be 3-5mm, and the height of the arc-shaped reinforcing rib 146 is not less than 10mm. This design helps to improve the structural strength of the front cover body 10.

[0078] In this embodiment, the bottom area of ​​the front cover body 10 is fragmented by the mutual support of the annular protrusion 141, radial ribs 142, bosses 143, fan-shaped recesses 144, connecting ribs 145 and arc-shaped reinforcing ribs 146, which can effectively improve the rigidity and strength of the engine front cover and effectively reduce radiated noise.

[0079] Please refer to this as well. Figure 5 , Figure 5 This is a partial structural diagram of the engine hood in the area where the suspension platform is located in the embodiments provided in this application.

[0080] In some implementations, the hood body 10 has a mounting platform 13 protruding towards the side where the outer surface 10B is located, and the mounting platform 13 is located in the middle region of the hood body 10. The mounting platform 13 is used to mount the suspension bracket, which is connected to the vehicle frame.

[0081] In application, the aforementioned mounting parts 12 can be arranged in the vicinity of the suspension mounting platform 13. Since the suspension mounting platform 13 needs to withstand a large suspension load, arranging the mounting parts 12 near the suspension mounting platform 13 can strengthen the connection between the suspension mounting platform 13 and the engine.

[0082] In practice, some of the mounting portions 12 on the front cover body 10 can be located above the suspension mounting platform 13, while others can be located below it. This ensures the stability of the overall structure after the engine cover is mounted on the engine and the engine is mounted on the vehicle, thus reducing vibration transmission and radiated noise.

[0083] In the illustrated example, three mounting portions 12 are provided above the suspended mounting platform 13, and one mounting portion 12 is provided below the suspended mounting platform 13. In other embodiments, the arrangement of the mounting portions 12 and the suspended mounting platform 13 can be flexibly configured as needed.

[0084] In some implementations, the mounting platform 13 has three or more mounting holes 131, which are not arranged in a straight line. This ensures the stability and reliability of the suspension bracket mounted on the mounting platform 13, and also reduces structural vibrations transmitted to the vehicle body through the non-collinear connection points between the suspension bracket and the mounting platform 13. The mounting platform 13 also eliminates the need for additional adapter brackets.

[0085] In the illustrated example, the suspended mounting platform 13 has three mounting holes 131 arranged in a triangular pattern. In other embodiments, the suspended mounting platform 13 may have four or five or other numbers of mounting holes 131, for example, four mounting holes 131 arranged in a quadrilateral pattern. The specific number can be determined according to the application requirements and is not limited here.

[0086] In practice, the mounting holes 131 on the suspension mounting platform 13 are threaded holes with a diameter of not less than 12mm to accommodate bolts of not less than M10. This improves the stability of the connection between the suspension bracket and the suspension mounting platform 13 and also helps reduce vibration transmission.

[0087] In some implementations, multiple support ribs 132 are provided between the bottom of the suspension mounting platform 13 and the front cover body 10. This can improve the structural strength of the suspension mounting platform 13, thereby ensuring the stability of the connection between the suspension mounting platform 13 and the vehicle frame through the suspension bracket.

[0088] For example, the support rib 132 can be a triangular or trapezoidal structure to provide higher support for the suspended mounting platform 13. The shape of the support rib 132 can also be other forms, such as square or irregular shapes.

[0089] In the illustrated example, there are three support ribs 132. In other embodiments, the number of support ribs 132 can be set as needed.

[0090] For example, the width of the support rib 132 is 3-8mm. In this way, while ensuring the strength of the suspended mounting platform 13, the amount of material used can be reduced, avoiding material redundancy.

[0091] In this embodiment, the engine hood is a one-piece casting. For example, the engine hood can be made of cast aluminum material and high-pressure cast. In this way, the engine hood has a simple structure, is easy to process, and has a low cost. Combined with the structural design on the aforementioned hood body 10, it can achieve lower radiated noise and structural vibration transmission, providing technical conditions for achieving a near-pure electric NVH experience.

[0092] For example, the average wall thickness of the front cover body 10 can be 3-4 mm. This can accommodate both casting quality and structural design requirements.

[0093] This application embodiment also provides an engine, which includes the engine front cover described in the above embodiment. The front cover body 10 of the engine front cover can be fixedly connected to the engine block and cylinder head through the mounting part 12.

[0094] This application also provides a vehicle that includes the aforementioned engine or engine hood. The vehicle can be a hybrid vehicle or a range-extended vehicle.

[0095] The engine and vehicle described above, including the aforementioned engine hood, have similar technical effects to those of an engine hood, and will not be repeated here. Other structures of the engine and vehicle can be implemented with reference to existing technologies, and will not be elaborated upon here.

[0096] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An engine front cover, characterized in that, The device includes a front cover body, the front cover body having an inner side portion, the front cover body having at least one reinforcing rib on the inner side portion, the front cover body having at least two mounting portions, and at least one reinforcing rib connecting any two mounting portions.

2. The engine front cover according to claim 1, characterized in that, The mounting section is provided in three or more parts, and at least three of the mounting sections are arranged in a triangular pattern.

3. The engine front cover according to claim 1, characterized in that, The mounting part has bolt holes with a diameter of 8.2-12 mm.

4. The engine front cover according to any one of claims 1-3, characterized in that, The mounting portion includes a boss portion that protrudes toward the side where the inner surface portion is located.

5. The engine front cover according to any one of claims 1-3, characterized in that, At least some of the reinforcing ribs are provided with reinforcing protrusions; and / or, the width of the reinforcing rib is 3-8 mm, and the height of the reinforcing rib is not less than 3 mm.

6. The engine front cover according to any one of claims 1-3, characterized in that, The front cover body has an outer surface, and the front cover body is provided with a suspension mounting platform that protrudes toward the side where the outer surface is located. The suspension mounting platform is located in the middle region of the front cover body, and the mounting part is provided above and below the suspension mounting platform.

7. The engine front cover according to any one of claims 1-3, characterized in that, The average wall thickness of the front cover body is 3-4 mm.

8. The engine front cover according to any one of claims 1-3, characterized in that, Each of the mounting parts has a plurality of reinforcing ribs connected circumferentially along its outer periphery.

9. An engine, characterized in that, Includes the engine front cover as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the engine as described in claim 9 or the engine front cover as described in any one of claims 1-8.

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