Oil pan structure and engine

Abstract

The utility model provides an oil pan structure and an engine. The oil pan structure comprises a shell and a plurality of first reinforcing ribs. The shell comprises a bottom face and a plurality of side faces, and the side faces are connected to the bottom face in the circumferential direction and comprise the air inlet side face, the exhaust side face and the front end face. The multiple first reinforcing ribs are arranged on the multiple side faces in the stretching direction of the shell, and the multiple first reinforcing ribs are arranged at intervals. Step-shaped planes are formed on the air inlet side face, the air outlet side face and the front end face, the surface of each step-shaped plane is connected with the multiple first reinforcing ribs in an attached mode, and each step-shaped plane comprises multiple first bent parts extending in the direction close to the interior of the shell. The plurality of first bending parts are arranged at intervals along the stretching direction of the shell; the plurality of first bending parts and the plurality of first reinforcing ribs form a net structure. The local dynamic stiffness of the plane of the oil pan structure can be improved.

Description

Technical Field

[0001] This utility model relates to the field of engine parts technology, specifically to an oil pan structure and an engine. Background Technology

[0002] The oil pan is a crucial component of the engine lubrication system. Connected to the engine block, it stores engine oil and assists in the circulation of the lubrication system. Its structural and functional design directly impacts the engine's lubrication efficiency and reliability. Because the oil pan is a thin-walled, large-plane structure, areas with weak local stiffness exhibit significant vibration response, high radiated noise, and are easily exacerbated by resonance. Therefore, oil pan structures typically incorporate reinforcing ribs to improve planar stiffness, thereby reducing vibration response and noise radiation. However, current oil pan structures, to meet the requirements of cast aluminum decoupling processes, mostly use vertically distributed reinforcing ribs. This purely vertical distribution of ribs still leaves areas with weak local dynamic stiffness, making it difficult to further improve the overall planar dynamic stiffness of the oil pan structure.

[0003] Existing technologies include methods that improve the dynamic stiffness of the oil pan structure by setting approximately transverse reinforcing ribs on one side of the oil pan structure. However, this still results in the problem of weak dynamic stiffness in other parts.

[0004] Therefore, how to provide a better dynamic stiffness of the oil pan structure in the local plane has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an oil pan structure that can improve the dynamic stiffness of the local planar part of the oil pan structure and further reduce the noise radiation of the planar excitation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] In a first aspect, embodiments of this application provide an oil pan structure, including a shell and a plurality of first reinforcing ribs; the shell includes a bottom surface and a plurality of side surfaces, the plurality of side surfaces being circumferentially connected to the bottom surface, the plurality of side surfaces including an intake side surface, an exhaust side surface, and a front end surface; the plurality of first reinforcing ribs are disposed on the plurality of side surfaces along the stretching direction of the shell, and the plurality of first reinforcing ribs are spaced apart; the intake side surface, the exhaust side surface, and the front end surface are all formed with stepped planes, the surface of each stepped plane is in close contact with the plurality of first reinforcing ribs, and the stepped plane includes a plurality of first bent portions extending toward the interior of the shell; the plurality of first bent portions are spaced apart along the stretching direction of the shell; the plurality of first bent portions and the plurality of first reinforcing ribs form a mesh structure.

[0008] Furthermore, each first bend is formed by a second reinforcing rib, which extends in a direction perpendicular to the tensile direction of the shell.

[0009] Furthermore, the second reinforcing rib is perpendicular to the first reinforcing rib, and the mesh structure is a grid-like structure.

[0010] Furthermore, each first bend is formed by a second reinforcing rib, and the mesh structure is a grid structure.

[0011] Furthermore, the first reinforcing rib is integrally formed with multiple sides.

[0012] Furthermore, the first reinforcing rib includes an inner reinforcing rib and an outer reinforcing rib. The inner reinforcing rib is located on the inner side of the side surface, and the outer reinforcing rib is located on the outer side of the side surface. The inner and outer reinforcing ribs are integrally formed with the side surface.

[0013] Furthermore, the first reinforcing rib is an integrally formed structure, extending through the side, with at least a portion located on the inner side of the side and at least a portion located on the outer side of the side.

[0014] Furthermore, multiple mounting holes are provided on the sealing surface, and mounting bolts are installed in the multiple mounting holes for fixing the connection between the cylinder block and the oil pan structure.

[0015] Furthermore, a third reinforcing rib is provided at the location of the mounting bolts on the housing.

[0016] Secondly, embodiments of this application also provide an engine, including a cylinder block and an oil pan structure, wherein the oil pan structure is connected to the cylinder block, and the oil pan structure is the oil pan structure provided in the above embodiments.

[0017] The beneficial effects of this utility model embodiment are:

[0018] In this embodiment, the multiple sides of the oil pan structure, such as the intake side, exhaust side and front end, are set as stepped planes. The first bend of the stepped plane and the first reinforcing rib are set as a mesh structure, thereby dividing the multiple sides into multiple small planes with higher stiffness. This improves the dynamic stiffness of the multiple sides of the shell, that is, improves the local dynamic stiffness of the plane of the oil pan structure, thereby reducing the deformation of the multiple sides under unit excitation, and thus reducing the noise radiation of the multiple sides under excitation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly described below.

[0020] Figure 1 This is a schematic diagram of the oil pan structure shown in one embodiment of this application;

[0021] Figure 2 This is a cross-sectional view of an oil pan structure shown in one embodiment of this application;

[0022] Figure 3 This is a cross-sectional view of an oil pan structure shown in another embodiment of this application;

[0023] Figure 4 This is a top view of an embodiment of the oil pan structure shown in this application;

[0024] Figure 5 This is a schematic diagram of the oil pan structure connecting to the cylinder block, as shown in one embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the dynamic stiffness frequency curve of the exhaust side of an oil pan structure according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the response function image of the exhaust side of an oil pan structure according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the dynamic stiffness frequency curve of the front end face of an oil pan structure according to an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the response function image of the front end face of an oil pan structure according to an embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the dynamic stiffness frequency curve of the intake side of an oil pan structure according to an embodiment of this application.

[0030] Figure 11 This is a schematic diagram of the response function image of the intake side of an oil pan structure according to an embodiment of this application.

[0031] Reference numerals: housing 1; bottom surface 11; side surface 12; intake side surface 121; exhaust side surface 122; front end surface 123; first reinforcing rib 2; stepped plane 3; first bend 31; second bend 32; first surface 33; second surface 34; sealing surface 4; mounting hole 41; third reinforcing rib 42; cylinder 5. Detailed Implementation

[0032] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0034] See Figure 1 -2. This application provides an oil pan structure, including a shell 1 and a first reinforcing rib 2.

[0035] The housing 1 includes a bottom surface 11 and multiple side surfaces 12, which are circumferentially connected to the bottom surface 11. The multiple side surfaces 12 include an intake side surface 121, an exhaust side surface 122, and a front end surface 123.

[0036] Multiple first reinforcing ribs 2 are arranged on multiple sides 12 along the stretching direction of the shell 1, and the multiple first reinforcing ribs 2 are spaced apart.

[0037] The intake side 121, the exhaust side 122 and the front end face 123 are all formed with stepped planes 3. The surface of each stepped plane 3 is attached to the first reinforcing rib 2. The stepped plane 3 includes a plurality of first bending portions 31 extending toward the interior of the housing. The plurality of first bending portions 31 and the plurality of first reinforcing ribs 2 form a mesh structure.

[0038] The first bending portion 31 is provided at intervals along the stretching direction of the housing 1.

[0039] This application embodiment forms stepped planes 3 on the three large planes of the housing 1—the intake side 121, the exhaust side 122, and the front end face 123—so that the first bending portion 31 and the first reinforcing rib 2 are connected to form a mesh structure. The cooperation between the first bending portion 31 and the first reinforcing rib 2 divides each side 12 into multiple smaller planes with higher stiffness, thereby further improving the local dynamic stiffness of multiple sides 12 of the housing 1, reducing the response and deformation of multiple sides 12 under unit excitation, and thus reducing noise radiation. Compared with the prior art, this application can better improve the dynamic stiffness of the oil pan structure.

[0040] Among them, the mesh structure can include the grid structure, the grid structure, etc.

[0041] In the above embodiments, the intake side 121 is the side of the oil pan structure close to the engine's intake system, the exhaust side 122 is the side of the oil pan structure close to the engine's exhaust system, and the front end 123 is the side of the oil pan structure close to the engine's timing mechanism.

[0042] See Figure 3 In one embodiment, each first bend 31 is formed by a second reinforcing rib, which extends in a direction perpendicular to the stretching direction of the housing 1.

[0043] In one embodiment, the second reinforcing rib is arranged perpendicularly to the first reinforcing rib 2, and the mesh structure is a grid-like structure.

[0044] In another embodiment, each first bend 31 is formed by a second reinforcing rib, and the mesh structure is a grid structure. Specifically, the first reinforcing rib 2 and the second reinforcing rib are inclined to form the above-mentioned grid structure.

[0045] In one embodiment, the stepped plane 3 further includes a second bend 32, a first surface 33, and a second surface 34, wherein the second bend 32 is provided to extend the stepped plane 3 in a direction away from the interior of the housing 1.

[0046] The first surface 33 and the second surface 34 are spaced apart, and the first surface 33 and the second surface 34 are connected sequentially between the first bent portion 31 and the second bent portion 32 in a direction away from the bottom surface 11.

[0047] In other embodiments, the stepped plane 3 is configured as an integrally formed structure, and each surface of the stepped plane 3, as well as the first bend 31 and the second bend 32, are second reinforcing ribs.

[0048] In one embodiment, the first reinforcing rib 2 and the plurality of side surfaces 12 are integrally formed.

[0049] The first reinforcing rib 2 includes an inner reinforcing rib and an outer reinforcing rib. The inner reinforcing rib is located on the inner side of the side surface 12, and the outer reinforcing rib is located on the outer side of the side surface 12. The inner reinforcing rib and the outer reinforcing rib are integrally formed with the side surface 12.

[0050] Furthermore, the inner reinforcing rib extends inward toward the interior of the shell 1, while the outer reinforcing rib extends away from the interior of the shell 1.

[0051] In this embodiment, the first reinforcing rib 2 is positioned on the inner and outer sides of multiple sides 12, with the inner and outer reinforcing ribs corresponding to each other. Compared with the staggered arrangement of the first reinforcing rib 2 in the prior art, this can further increase the thickness of the first reinforcing rib 2, further enhance the strength of the first reinforcing rib 2, and thus improve the dynamic stiffness of the oil pan structure.

[0052] In another embodiment, the first reinforcing rib is configured as an integrally formed structure, and the first reinforcing rib 2 and the plurality of side surfaces 12 are configured as separate structures. The first reinforcing rib 2 penetrates through the side surface, and at least part of it is located on the inner side of the side surface and at least part of it is located on the outer side of the side surface.

[0053] In this embodiment of the application, by setting the first reinforcing rib 2 as an integrally formed structure and extending it through multiple sides 12, the total height and thickness of the first reinforcing rib 2 can be effectively increased, and the strength of the first reinforcing rib 2 can be significantly improved.

[0054] In one embodiment, each second bend 32 is formed by a fourth reinforcing rib, which extends in a direction perpendicular to the stretching direction of the housing 1.

[0055] In one embodiment, the fourth reinforcing rib is arranged perpendicularly to the outer reinforcing rib and also forms a mesh structure, wherein the mesh structure is a grid structure.

[0056] In another embodiment, the fourth reinforcing rib is connected to the aforementioned outer reinforcing rib and similarly forms a mesh structure, and the mesh structure is a grid structure.

[0057] In this embodiment, a mesh structure is formed by connecting the second bent portion 32 with the outer reinforcing rib, thereby further improving the dynamic stiffness of the shell 1 of the oil pan structure.

[0058] See Figure 4 -5. In one embodiment, the housing 1 further includes a sealing surface 4, which is disposed on the side of the plurality of sides 12 away from the bottom surface 11, for connection with the cylinder body 5.

[0059] The sealing surface 4 is provided with multiple mounting holes 41, and mounting bolts are provided in the multiple mounting holes 41 for fixing the connection between the cylinder body 5 and the oil pan structure.

[0060] In one embodiment, the housing 1 is provided with a third reinforcing rib 42 at the location of the mounting bolt.

[0061] In one embodiment, a third reinforcing rib 42 is provided on the sealing surface 4 at the position of the mounting bolt.

[0062] In another embodiment, a third reinforcing rib 42 (not shown in the figure) is provided on the housing 1 at the position of the mounting bolt, and the third reinforcing rib 42 is arranged around the mounting bolt.

[0063] The third reinforcing rib 42 is provided on the outer surface of the shell 1, extending away from the cylinder 5.

[0064] See Figure 6-11. From the dynamic stiffness-frequency curves and frequency response function graphs of the exhaust side 121, front end 123, and exhaust side 122 of the oil pan structure obtained by experiments, it can be seen that:

[0065] like Figure 6 As shown in Figure 7, the minimum dynamic stiffness of the exhaust side 122 of the oil pan structure is increased from the initial 2017 N / mm @ 1706 Hz to 12259 N / mm @ 1706 Hz compared to the configuration without the improved first reinforcing rib, stepped plane, third reinforcing rib, and fourth reinforcing rib. Furthermore, the FRF amplitude of the frequency response function of the exhaust side 122 of the oil pan structure is reduced from 5.81 g / N @ 1708 Hz to 1.58 g / N @ 2193 Hz.

[0066] like Figure 8 As shown in Figure 9, the minimum dynamic stiffness of the front end face 123 of the oil pan structure increases from the initial 7258 N / mm @ 1706 Hz to 10236 N / mm @ 1706 Hz, and the FRF amplitude of the frequency response function of the front end face 123 of the oil pan structure decreases from 3.57 g / N @ 2542 Hz to 2.48 g / N @ 2519 Hz.

[0067] like Figure 10 As shown in Figure 11, the minimum dynamic stiffness of the intake side 121 of the oil pan structure increases from the initial 3593 N / mm @ 1706 Hz to 10585 N / mm @ 1706 Hz, and the FRF amplitude of the frequency response function of the intake side 121 of the oil pan structure decreases from 4.9 g / N @ 2181 Hz to 1.14 g / N @ 2192 Hz.

[0068] Therefore, the structure of each reinforcing rib provided in this application embodiment can significantly improve the dynamic stiffness of the above-mentioned multiple side surfaces 12 and reduce their response to unit excitation, further reducing the multiple side surfaces 12 from intense noise radiation.

[0069] This application also provides an engine, which includes a cylinder block and an oil pan structure. The oil pan structure is connected to the cylinder block, and the oil pan structure is the oil pan structure provided in the above embodiments.

[0070] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oil pan structure, characterized in that, include: A housing, the housing including a bottom surface and multiple side surfaces, the multiple side surfaces being circumferentially connected to the bottom surface, the multiple side surfaces including an air intake side surface, an exhaust side surface, and a front end surface; Multiple first reinforcing ribs are disposed on multiple sides along the stretching direction of the shell, and the multiple first reinforcing ribs are spaced apart; The air intake side, the air exhaust side, and the front end face are all formed with stepped planes. The surface of each stepped plane is attached to and connected with a plurality of first reinforcing ribs, and the stepped plane includes a plurality of first bends extending toward the interior of the housing. The plurality of first bending portions are spaced apart along the stretching direction of the housing; the plurality of first bending portions and the plurality of first reinforcing ribs form a mesh structure.

2. The oil pan structure according to claim 1, characterized in that, Each of the first bends is formed by a second reinforcing rib, which extends in a direction perpendicular to the tensile direction of the housing.

3. The oil pan structure according to claim 2, characterized in that, The second reinforcing rib is perpendicular to the first reinforcing rib, and the mesh structure is a grid-shaped structure.

4. The oil pan structure according to claim 1, characterized in that, Each of the first bends is formed by a second reinforcing rib, and the mesh structure is a grid structure.

5. The oil pan structure according to claim 1, characterized in that, The first reinforcing rib and the multiple side surfaces are integrally formed.

6. The oil pan structure according to claim 5, characterized in that, The first reinforcing rib includes an inner reinforcing rib and an outer reinforcing rib. The inner reinforcing rib is located on the inner side of the side surface, and the outer reinforcing rib is located on the outer side of the side surface. The inner and outer reinforcing ribs are integrally formed with the side surface.

7. The oil pan structure according to claim 1, characterized in that, The first reinforcing rib is an integrally formed structure, and the first reinforcing rib extends through the side surface, with at least a portion located on the inner side of the side surface and at least a portion located on the outer side of the side surface.

8. The oil pan structure according to claim 1, characterized in that, The housing also includes a sealing surface disposed on the side of the plurality of sides away from the bottom surface for connection with the cylinder body.

9. The oil pan structure according to claim 8, characterized in that, Multiple mounting holes are provided on the sealing surface, and mounting bolts are provided in the multiple mounting holes for fixing the connection between the cylinder body and the oil pan structure.

10. The oil pan structure according to claim 9, characterized in that, The housing is provided with a third reinforcing rib at the location of the mounting bolt.

11. An engine, characterized in that, include: Cylinder block; An oil pan structure is connected to the cylinder block, wherein the oil pan structure is the oil pan structure according to any one of claims 1-10.

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