Oil pan structure, engine and vehicle

Abstract

The utility model provides an oil pan structure, an engine and a vehicle, and relates to the technical field of engines. The oil pan structure comprises an oil pan body and a cover plate, the oil pan body is provided with an oil discharge outlet, the oil discharge outlet is communicated with the interior and the exterior of the oil pan body, and the cover plate is used for being detachably connected with the oil pan body on the exterior of the oil pan body and used for closing or opening the oil discharge outlet. According to the oil pan structure, the oil discharge efficiency can be improved, and it can be guaranteed that impurities in engine oil are cleaned up.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an oil pan structure, an engine and a vehicle. Background Art

[0002] In vehicles, in order to ensure the reliability of the engine, the engine lubrication system is indispensable. The oil pan is the oil storage structure of the engine lubricating oil. It is a shell structure with an opening on the top, located at the bottom of the engine. The top opening of the oil pan and the bottom opening of the engine crankcase are usually fixed and sealed by sealant and bolts. When the engine needs lubrication, the engine oil pump sucks the oil in the oil pan through the oil suction pipe located inside the oil pan and transports it to the part that needs lubrication (the end of the oil suction pipe away from the oil pump is an opening, and the oil is sucked through the opening), and then flows back to the oil pan, forming the circulation of the oil. Because the performance of the oil will decay, oxidize, emulsify, and generate some impurities after being used to lubricate the required parts, new lubricating oil needs to be replaced after a certain period.

[0003] In order to replace the engine oil, it is necessary to drain the old engine oil inside the oil pan. The existing oil pan is usually provided with an oil drain bolt. After the oil drain bolt is unscrewed, the old engine oil is discharged from the oil drain bolt hole. However, due to the limitation of the bolt specifications, the diameter of the oil drain bolt is very small (usually about 10 mm), and the oil drain bolt needs to be connected to the oil drain threaded hole, so the diameter of the oil drain bolt hole is also very small, and the oil drain efficiency is low after the oil drain bolt is removed. Secondly, since the oil drain bolt hole is relatively small, if the engine oil contains a large amount of solid impurities or glue impurities, it may cause the impurities to block the oil drain bolt hole; in addition, even if the oil drain bolt hole is not blocked, some impurities may remain attached to the inner wall of the oil pan. At this time, the oil pan needs to be disassembled from the lower end of the crankcase. The disassembly cost is high and the disassembly process is complicated, which ultimately leads to high oil change costs and cumbersome oil change steps. Utility Model Content

[0004] The utility model aims to solve at least one of the above technical problems.

[0005] In order to solve the above problems, the utility model provides an oil pan structure, which includes an oil pan body and a cover plate. The oil pan body is provided with an oil drain port, which connects the inside and outside of the oil pan body. The cover plate is used to be detachably connected to the oil pan body outside the oil pan body, and the cover plate is used to close or open the oil drain port.

[0006] Compared with the prior art, the oil pan structure provided by the utility model has but is not limited to the following technical effects:

[0007] In the oil pan structure, a cover plate is used to close or open the oil drain port. Unlike the existing oil drain bolt, the cover plate is not limited by bolt specifications like the existing oil drain bolt. The cover plate can be designed to be larger than the diameter of the existing oil drain bolt. Accordingly, the size of the oil drain port can also be larger than the size of the existing oil drain bolt hole. Therefore, when it is necessary to drain the old engine oil inside the oil pan body, the larger cover plate can be removed from the oil pan body outside the oil pan body, so that the old engine oil can be discharged faster from the larger oil drain port, and the oil discharge efficiency is higher. In addition, due to the larger size of the oil drain port, the impurities in the old engine oil will not cause the oil drain port to have a risk of clogging. Secondly, even if some of the impurities in the old engine oil remain attached to the inner wall of the oil pan body, due to the larger size of the oil drain port, a tool can be inserted into the oil pan body through the oil drain port to clean the remaining impurities without removing the oil pan body from the lower end of the crankcase. The cost of changing the engine oil is low and the steps of changing the engine oil are simple.

[0008] Further, the oil discharge port is arranged opposite to the oil suction port at the end of the oil suction pipe of the oil pump, and / or the size of the oil discharge port is greater than or equal to the size of the oil suction port.

[0009] Furthermore, a protruding structure is protruded from the outer wall of the oil pan body, and the oil drain port passes through the protruding structure.

[0010] Furthermore, the oil pan structure also includes a connecting piece, a first connecting hole is provided on the raised structure, and a second connecting hole is provided on the cover plate. When the cover plate abuts against the raised structure and closes the oil drain port, the connecting piece is used to sequentially penetrate the second connecting hole and the first connecting hole to detachably connect the cover plate to the raised structure.

[0011] Further, the raised structure includes a boss structure and a boss structure, the boss structure is located at the edge of the boss structure, and the oil drain port is located at the boss structure, the first connecting hole is located at the boss structure, the cover plate includes a cover plate body and a boss located at the edge of the cover plate body, and the second connecting hole is located at the boss.

[0012] Furthermore, the oil pan structure also includes a sealing ring, which is used to be arranged between the cover plate and the protruding structure, and the sealing ring is arranged around the oil drain port.

[0013] Further, an annular sealing groove for positioning the sealing ring is provided on a side of the protruding structure facing the cover plate, or an annular sealing groove for positioning the sealing ring is provided on a side of the cover plate facing the protruding structure.

[0014] Further, the oil drain port is located at the lowest position of the oil pan body;

[0015] Alternatively, the bottom wall of the oil sump body includes a first bottom wall and a second bottom wall, the height of the second bottom wall is higher than the first bottom wall, the first bottom wall and the second bottom wall are connected by a transition wall, an end of the second bottom wall connected to the transition wall is lower than an end thereof away from the transition wall, an end of the first bottom wall connected to the transition wall is lower than an end thereof away from the transition wall, and the oil drain port is located at an end of the first bottom wall close to the transition wall.

[0016] The utility model also provides an engine, comprising the oil pan structure as mentioned above.

[0017] Since the technical improvements and technical effects of the engine are the same as those of the oil pan structure, the engine will not be described in detail.

[0018] The utility model also provides a vehicle, comprising the engine as mentioned above.

[0019] Since the technical improvements and technical effects of the vehicle are the same as those of the engine, the vehicle will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of the oil pan structure of an embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0022] Figure 3 This is a schematic diagram of the external structure of the oil pan body of an embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the oil pan structure of an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Oil pan body; 11. First bottom wall; 111. Oil drain port; 112. Protrusion structure; 1121. Boss structure; 1122. Boss structure; 1123. First connecting hole; 1124. Annular sealing groove; 12. Second bottom wall; 13. Rib plate; 2. Oil suction pipe; 21. Oil suction port; 22. Filter plate; 3. Cover plate; 31. Cover plate body; 32. Lug; 321. Second connecting hole; 4. Sealing ring; 5. Connector; 6. Filter plate; 7. Oil baffle plate. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Although some embodiments of the utility model are shown in the accompanying drawings, it should be understood that the utility model can be implemented in various forms and should not be interpreted as being limited to the embodiments described here. On the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for exemplary purposes and are not used to limit the scope of protection of the utility model.

[0027] The Z axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the accompanying drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the left and right positions, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention 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 the present invention.

[0028] The term "including" and its variations used in this article are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] See also Figure 1-2 An oil pan structure according to an embodiment of the utility model comprises an oil pan body 1 and a cover plate 3, the oil pan body 1 is provided with an oil drain port 111, the oil drain port 111 communicates the inside and the outside of the oil pan body 1, the cover plate 3 is used to be detachably connected to the oil pan body 1 outside the oil pan body 1, and the cover plate 3 is used to close or open the oil drain port 111.

[0031] In this embodiment, in the oil pan structure, the cover plate 3 is used to close or open the oil drain port 111. Different from the existing oil drain bolt, the cover plate 3 is not subject to the bolt specification restrictions like the oil drain bolt. The cover plate 3 can be designed to be larger than the diameter of the existing oil drain bolt. Accordingly, the size of the oil drain port 111 can also be larger than the size of the existing oil drain bolt hole. Therefore, when it is necessary to drain the old engine oil inside the oil pan body 1, the larger cover plate 3 can be removed from the oil pan body 1 on the outside of the oil pan body 1, so that the old engine oil can be discharged from the larger oil drain port 111 more quickly, and the oil drainage efficiency is higher. In addition, since the oil drain port 111 is larger in size, impurities in the old engine oil will not cause the oil drain port 111 to have a risk of clogging. Secondly, even if some of the impurities in the old engine oil remain attached to the inner wall of the oil pan body 1, since the oil drain port 111 is larger in size, tools can be used to reach into the oil pan body 1 through the oil drain port 111 to clean up the remaining impurities without removing the oil pan body 1 from the lower end of the crankcase. The cost of changing the engine oil is low and the steps of changing the engine oil are simple.

[0032] Alternatively, see Figure 2 The oil discharge port 111 is arranged opposite to the oil suction port 21 at the end of the oil suction pipe 2 of the oil pump, and / or the size of the oil discharge port 111 is greater than or equal to the size of the oil suction port 21.

[0033] In the prior art, the oil pump sucks oil through the oil suction pipe 2, specifically, through the open port at the bottom of the oil suction pipe 2, that is, the oil suction port 21. After long-term use, impurities will be generated in the oil. If these impurities are sent into the lubrication part or the lubricating oil channel by the oil pump, they will not only cause blockage of the lubricating oil channel, but also cause wear to the required lubricating parts, affecting the reliability of the engine. Based on this, a filter plate 6 can be provided at the oil suction port 21 at the bottom of the oil suction pipe 2 of the present embodiment to ensure that the oil pump does not suck in solid impurities in the oil when sucking oil. However, impurities are easily adsorbed on the filter plate 6, especially the glue impurities in the oil are easily adsorbed on the filter plate 6. If there are many impurities on the filter plate 6, the oil suction resistance will increase, which will cause low engine oil pressure in severe cases, and the engine will be easily damaged and scrapped.

[0034] In this embodiment, the oil discharge port 111 is arranged opposite to the oil suction port 21 at the bottom of the oil suction section. In this way, without disassembling the oil pan body 1, the maintenance personnel can clearly and intuitively see whether there are impurities on the filter disc 6 at the oil suction port 21 from the oil discharge port 111. If there are many impurities on the filter disc 6, the tool can be inserted into the oil pan through the oil discharge port 111 to clean the impurities on the filter disc 6. In addition, the size of the oil discharge port 111 is greater than or equal to the size of the oil suction port 21. On the one hand, it is more convenient to insert the tool into the oil pan through the oil discharge port 111 to clean the impurities on the filter disc 6. On the other hand, the filter disc 6 can also be taken out from the oil discharge port 111 to clean the impurities on the filter disc 6 from the outside.

[0035] Alternatively, see Figure 3 The outer wall of the oil pan body 1 is protruded with a protruding structure 112 , and the oil drain port 111 passes through the protruding structure 112 .

[0036] In the present embodiment, since the size of the oil drain port 111 is relatively large, in order to ensure that the structural strength of the oil pan body 1 at the oil drain port 111 is not affected, or is not greatly affected, a protruding structure 112 is protruded on the outer wall of the oil pan body 1, which is equivalent to thickening the thickness of the oil pan body 1 at this location, so as to ensure that after the oil drain port 111 is opened, the structural strength here is not affected as much as possible.

[0037] In addition, the protruding structure protrudes toward the outside of the oil pan body 1, such as Figure 3 As shown, the protruding structure 112 is arranged to protrude downward from the oil pan body 1 instead of protruding into the oil pan body 1 , so as to ensure that the engine oil in the oil pan body 1 can flow out of the oil drain port 111 without being hindered by the protruding structure 112 .

[0038] Alternatively, see Figure 2-3 The oil pan structure also includes a connecting member 5, a first connecting hole 1123 is provided on the protruding structure 112, and a second connecting hole 321 is provided on the cover plate 3. When the cover plate 3 abuts against the protruding structure 112 and closes the oil drain port 111, the connecting member 5 is used to sequentially penetrate the second connecting hole 321 and the first connecting hole 1123 to detachably connect the cover plate 3 to the protruding structure 112.

[0039] In this embodiment, when the cover plate 3 abuts against the protruding structure from bottom to top and closes the oil drain port 111, the second connecting hole 321 and the first connecting hole 1123 can be sequentially penetrated through the connecting member 5 to achieve the fixation of the cover plate 3. The first connecting hole 1123 is arranged at the protruding structure to ensure that the first connecting hole 1123 has a certain depth and does not penetrate the oil pan body 1, thereby ensuring the stability and sealing of the connection between the cover plate 3 and the oil pan body 1.

[0040] It can be understood that the second connection hole 321 is a through hole, and the first connection hole 1123 is a blind hole, that is, the first connection hole 1123 is not connected to the inside of the oil pan body 1, ensuring that the oil will not leak from the first connection hole 1123, thereby ensuring the sealing. The first connection hole 1123 and / or the second connection hole 321 can be a threaded hole, and the connecting member 5 can be a bolt.

[0041] Alternatively, see Figure 2-3 The protruding structure 112 includes a convex disc structure 1121 and a convex column structure 1122, the convex column structure 1122 is located at the edge of the convex disc structure 1121, and the oil drain port 111 is located at the convex disc structure 1121, the first connecting hole 1123 is located at the convex column structure 1122, the cover plate 3 includes a cover plate body 31 and an ear 32 located at the edge of the cover plate body 31, and the second connecting hole 321 is located at the ear 32.

[0042] In this embodiment, the protrusion structure 112 includes a circular convex disc structure 1121 and a cylindrical convex column structure 1122. The convex column structure 1122 is located at the edge of the convex disc structure 1121. The diameter of the convex disc structure 1121 is determined by the size of the oil discharge port 111. If the size of the oil discharge port 111 needs to be larger, the diameter of the convex disc structure 1121 needs to be designed to be larger. If the size of the oil discharge port 111 needs to be smaller, the diameter of the convex disc structure 1121 needs to be designed to be smaller. The cover plate 3 specifically covers and closes the oil discharge port 111 through the cover plate body 31, and the lug 32 is used to open the second connection hole 321.

[0043] Among them, three boss structures 1122 can be set, and the three boss structures 1122 are arranged around the periphery of the convex disc structure 1121, and three lugs 32 are correspondingly set, and the three lugs 32 are arranged around the periphery of the cover body 31, and then the cover 3 is fixed by three connecting members 5 to ensure the stability of the cover 3 after being fixed.

[0044] Alternatively, see Figure 2-3 The oil pan structure further includes a sealing ring 4 , which is used to be disposed between the cover plate 3 and the protruding structure 112 , and the sealing ring 4 is disposed around the oil drain port 111 .

[0045] In this embodiment, when installing the cover plate 3, the sealing ring 4 can be placed on the bottom surface of the convex disc structure 1121 first, and then the cover plate 3 presses the sealing ring 4 and covers the oil drain port 111, and then the connecting member 5 can be installed. The connecting member 5 can be a bolt. As the bolt is gradually tightened, the sealing ring 4 is compressed to achieve a sealing effect and prevent the oil from leaking from between the convex structure 112 and the cover plate 3. The sealing ring 4 can be made of rubber.

[0046] Alternatively, see Figure 2-3 The side of the protruding structure 112 facing the cover plate 3 is provided with an annular sealing groove 1124 for positioning the sealing ring 4 , or the side of the cover plate 3 facing the protruding structure 112 is provided with an annular sealing groove 1124 for positioning the sealing ring 4 .

[0047] In this embodiment, the annular sealing groove 1124 is specifically arranged on the side of the convex disc structure 1121 facing the cover plate 3, or the annular sealing groove 1124 is specifically arranged on the side of the cover plate body 31 facing the protruding structure 112, for initial positioning of the sealing ring 4.

[0048] Alternatively, see Figure 1-3 The oil drain port 111 is located at the lowest position of the oil pan body 1 .

[0049] In this embodiment, the oil drain port 111 is arranged at the lowest position of the bottom wall of the oil pan body 1 to ensure that the engine oil has a tendency to flow toward the oil drain port 111 under gravity, which is conducive to clean oil drainage and also helps impurities in the engine oil to be discharged as much as possible along with the oil, reducing the possibility of residual impurities.

[0050] Alternatively, see Figure 1-3 , the oil drain port 111 is located at the lowest position of the oil sump body 1; or, the bottom wall of the oil sump body 1 includes a first bottom wall 11 and a second bottom wall 12, the height of the second bottom wall 12 is higher than the first bottom wall 11, the first bottom wall 11 and the second bottom wall 12 are connected by a transition wall, the end of the second bottom wall 12 connected to the transition wall is lower than the end away from the transition wall, the end of the first bottom wall 11 connected to the transition wall is lower than the end away from the transition wall, and the oil drain port 111 is located at the end of the first bottom wall 11 close to the transition wall.

[0051] In this embodiment, the bottom wall of the oil pan includes a lower first bottom wall 11 and a higher second bottom wall 12. The first bottom wall 11 and the second bottom wall 12 are connected by a transition wall, wherein other structures of the vehicle can be arranged in the space below the second bottom wall 12. The oil drain port 111 is arranged on the first bottom wall 11 to avoid interference with other structures of the vehicle.

[0052] In the present embodiment, the first bottom wall 11 and the second bottom wall 12 are respectively inclined downward toward the direction of the transition wall, that is, one end of the first bottom wall 11 close to the second bottom wall 12 is lower than the other end of the first bottom wall 11, and one end of the second bottom wall 12 close to the first bottom wall 11 is lower than the other end of the second bottom wall 12, and the height of the second bottom wall 12 is higher than the first bottom wall 11, so that it can be ensured that the engine oil inside the oil pan body 1 always has a tendency to flow from the second bottom wall 12 to the first bottom wall 11, and at the same time, the engine oil on the first bottom wall 11 always has a tendency to flow toward the end of the first bottom wall 11 close to the second bottom wall 12. Since the oil drain port 111 is specifically arranged at one end of the first bottom wall 11 close to the second bottom wall 12, the arrangement of the bottom wall of the oil pan body 1 of the present embodiment can make the engine oil inside the oil pan body 1 have a tendency to eventually flow to the oil drain port 111, which is conducive to the drainage of the engine oil.

[0053] Alternatively, if Figure 4 As shown, an oil baffle plate 7 is further provided inside the oil pan body 1, the oil baffle plate 7 is located higher than the oil suction port 21 of the oil suction pipe 2, and at least part of the oil baffle plate 7 is located above the first bottom wall 11, and the edge of the oil baffle plate 7 is connected to the side wall of the oil pan body 1. The provision of the oil baffle plate 7 can effectively suppress the vibration of the engine oil, reduce the risk of the engine oil vibration, ensure that the oil suction port 21 can also suck the oil under extreme working conditions (such as emergency braking), and finally improve the reliability of the engine.

[0054] Optionally, in order to improve the overall modality of the oil pan structure, a convex rib structure is provided at the side wall of the oil pan body 1, or / and a convex rib structure or a boss structure is also provided at the second bottom wall 12, or / and a rib plate 13 is provided protrudingly on the inner side of the second bottom wall 12. The oil pan body 1 and the above-mentioned reinforcement structures (convex rib structure, boss structure, rib plate 13) can be an integral cast aluminum structure, which has high structural strength and rigidity and can curb noise propagation.

[0055] Another embodiment of the utility model provides an engine, comprising the oil pan structure as described above.

[0056] Since the technical improvements and technical effects of the engine are the same as those of the oil pan structure, the engine will not be described in detail.

[0057] A vehicle according to yet another embodiment of the present invention comprises the engine as described above.

[0058] Since the technical improvements and technical effects of the vehicle are the same as those of the engine, the vehicle will not be described in detail.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0060] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An oil pan structure, characterized in that: The oil pan structure comprises an oil pan body (1) and a cover plate (3); the oil pan body (1) is provided with an oil drain port (111), the oil drain port (111) communicating the inside and the outside of the oil pan body (1); the cover plate (3) is used to be detachably connected to the oil pan body (1) outside the oil pan body (1), and the cover plate (3) is used to close or open the oil drain port (111).

2. The oil pan structure according to claim 1, characterized in that: The oil discharge port (111) is arranged opposite to the oil suction port (21) at the end of the oil suction pipe (2) of the oil pump, and / or the size of the oil discharge port (111) is greater than or equal to the size of the oil suction port (21).

3. The oil pan structure according to claim 1, characterized in that: A protruding structure (112) is protruding from the outer wall of the oil sump body (1), and the oil discharge port (111) passes through the protruding structure (112).

4. The oil pan structure according to claim 3, characterized in that: The oil pan structure further comprises a connecting member (5), the protruding structure (112) is provided with a first connecting hole (1123), the cover plate (3) is provided with a second connecting hole (321), and the connecting member (5) is used to penetrate the second connecting hole (321) and the first connecting hole (1123) in sequence, so as to detachably connect the cover plate (3) and the protruding structure (112).

5. The oil pan structure according to claim 4, characterized in that: The protrusion structure (112) comprises a convex disc structure (1121) and a convex column structure (1122), wherein the convex column structure (1122) is located at the edge of the convex disc structure (1121), and the oil discharge port (111) is located at the convex disc structure (1121), and the first connecting hole (1123) is located at the convex column structure (1122); the cover plate (3) comprises a cover plate body (31) and a lug (32) located at the edge of the cover plate body (31), and the second connecting hole (321) is located at the lug (32).

6. The oil pan structure according to claim 3, characterized in that: The oil pan structure further comprises a sealing ring (4), wherein the sealing ring (4) is used to be arranged between the cover plate (3) and the protruding structure (112), and the sealing ring (4) is arranged around the oil drain port (111).

7. The oil pan structure according to claim 6, characterized in that: An annular sealing groove (1124) for positioning the sealing ring (4) is provided on the side of the protruding structure (112) facing the cover plate (3), or an annular sealing groove (1124) for positioning the sealing ring (4) is provided on the side of the cover plate (3) facing the protruding structure (112).

8. The oil sump structure according to any one of claims 1 to 7, characterized in that: The oil drain port (111) is located at the lowest position of the oil sump body (1); Alternatively, the bottom wall of the oil sump body (1) comprises a first bottom wall (11) and a second bottom wall (12); the height of the second bottom wall (12) is higher than that of the first bottom wall (11); the first bottom wall (11) and the second bottom wall (12) are connected via a transition wall; an end of the second bottom wall (12) connected to the transition wall is lower than an end thereof away from the transition wall; an end of the first bottom wall (11) connected to the transition wall is lower than an end thereof away from the transition wall; and the oil drain port (111) is located at an end of the first bottom wall (11) close to the transition wall.

9. An engine, characterized in that: It comprises the oil sump structure as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the engine as claimed in claim 9.

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