Oil pan for engine

Abstract

The embodiment of the utility model provides an oil pan for an engine. The oil pan comprises a deep oil storage area and a shallow oil storage area, the sealing face of the deep oil storage area and the sealing face of the shallow oil storage area are located on the same plane, the bottom face of the deep oil storage area and the bottom face of the shallow oil storage area are connected through an inclined face, and the sealing face is opposite to the bottom face of the deep oil storage area. A sealing groove is formed in the sealing face, mounting holes are formed in the outer side of the sealing groove, and the outer sides of the adjacent mounting holes are connected through transverse reinforcing ribs to form an annular structure surrounding the outer sides of all the mounting holes in the oil pan. An oil drainage hole and a crankcase rubber tube fixing hole are formed in the side face of the deep oil storage area, an oil drainage insert is fixed in the oil drainage hole, an embedded insert is fixed in the crankcase rubber tube fixing hole, and a protruding structure is arranged on the side face of the deep oil storage area and used for increasing the oil storage volume. By applying the embodiment of the utility model, the weight of the oil pan can be reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an oil pan for an engine. Background Art

[0002] The oil pan is the lower half of the crankcase, also known as the lower crankcase. Its function is to seal the crankcase, which serves as the oil reservoir, preventing the ingress of impurities. It also collects and stores lubricating oil returning from the engine's friction surfaces, dissipates some heat, and prevents lubricating oil oxidation. The oil pan design must meet requirements for oil capacity, sealing performance, and oil pump suction at varying angles. It must also be small, lightweight, simple in structure, and easy to use, while also meeting the overall vehicle design requirements.

[0003] Currently, oil pans are mostly stamped from thin steel sheets, while those with more complex shapes are typically cast from cast iron or aluminum alloy. Furthermore, stamping steel sheets for complex structures requires disassembly into multiple components for assembly and connection, which not only incurs high mold design and manufacturing costs, but also requires additional steps in product assembly, resulting in high manufacturing costs.

[0004] It can be seen that in the prior art, the engine oil pan is heavy and has a high manufacturing cost. Utility Model Content

[0005] The purpose of the present invention is to provide an engine oil pan to reduce the weight of the oil pan and reduce the manufacturing cost. The specific technical solution is as follows:

[0006] An oil pan for an engine, comprising a deep oil storage area and a shallow oil storage area;

[0007] The sealing surfaces of the deep oil storage area and the shallow oil storage area are in the same plane, the bottom surface of the deep oil storage area and the bottom surface of the shallow oil storage area are connected by an inclined surface, and the sealing surface and the bottom surface of the deep oil storage area are opposite to each other;

[0008] The sealing surface is provided with a sealing groove, and a mounting hole is provided on the outer side of the sealing groove. The outer sides of adjacent mounting holes are connected by transverse reinforcing ribs to form an annular structure surrounding the outer sides of all mounting holes on the oil pan;

[0009] An oil drain hole and a crankcase hose fixing hole are provided on the side of the deep oil storage area. An oil drain insert is fixed in the oil drain hole, and a pre-embedded insert is fixed in the crankcase hose fixing hole. A convex structure is provided on the side of the deep oil storage area to increase the oil storage volume.

[0010] The oil pan is made of fiber-reinforced thermoplastic composite material through single-shot injection molding.

[0011] Optionally, the annular structure outside the mounting hole is composed of at least two layers, and longitudinal supporting ribs are provided between adjacent annular structures.

[0012] Optionally, a rubber sealing gasket is installed in the sealing groove.

[0013] Optionally, a pressure limiting sleeve is installed in the mounting hole, and the pressure limiting sleeve is used to install bolts connecting the engine and the oil pan.

[0014] Optionally, the pressure-limiting sleeve is fixed in the mounting hole by a limiting structure, or is fixed in the mounting hole by interference fit, or is fixed in the mounting hole by bonding.

[0015] Optionally, the number of the mounting holes is 34.

[0016] Optionally, the mounting holes are arranged in a specific manner as follows: 13 mounting holes are set in each of the two long sides and are evenly arranged; and 4 mounting holes are set in each of the two short sides and are evenly arranged.

[0017] Optionally, the outer surface of the oil pan is provided with reinforcing ribs intersecting horizontally and vertically.

[0018] Optionally, reinforcing ribs are provided at the bottom of the shallow oil storage area to increase the strength of the oil pan.

[0019] Optionally, an oil dipstick hole is provided on the side of the deep oil storage area where the sealing surface is located, for installing an oil dipstick to determine the oil level; an oil return hole is provided below the oil dipstick hole, and an oil return insert is provided in the oil return hole.

[0020] Compared with the prior art, the engine oil pan of the present invention is injection-molded from a fiber-reinforced thermoplastic composite material, which reduces the difficulty of molding and production costs, and the assembly process is simple and easy to operate; the oil drain insert, embedded insert, etc. are all integrated on the injection-molded oil pan to form an oil pan assembly, which greatly reduces the weight of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of an embodiment of an engine oil pan provided by the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of a top view structure of FIG.

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of an engine oil pan provided by the utility model;

[0025] in, Figures 1 to 3 The corresponding relationship between the component names and the corresponding reference numerals is as follows:

[0026] 11 deep oil storage area, 12 shallow oil storage area, 13 inclined surface, 14 sealing groove, 15 mounting hole, 16 oil drain hole, 17 crankcase hose fixing hole, 18 reinforcing rib, 19 oil dipstick hole;

[0027] 111 bottom surface of the deep oil storage area, 112 side surface of the deep oil storage area, 113 raised structure, 114 oil return hole;

[0028] 121The bottom of the shallow oil reservoir;

[0029] 103 sealing surface;

[0030] 2. Drain oil insert;

[0031] 3. Pre-embedded inserts;

[0032] 4 rubber sealing gasket;

[0033] 5. Pressure limiting sleeve;

[0034] 6 oil return inserts. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] It should be noted that the directional words top and bottom in this embodiment are based on Figure 1 The positions of the illustrated oil sump embodiments are defined as references.

[0037] Please combine Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an oil pan embodiment provided by the utility model. Figure 2 for Figure 1 The top view structural diagram of Figure 1 and Figure 2 As shown, the engine oil pan provided in this embodiment includes a deep oil storage area 11 and a shallow oil storage area 12;

[0038] The sealing surfaces 103 of the deep oil storage area 11 and the shallow oil storage area 12 are in the same plane. The bottom surface 111 of the deep oil storage area 11 and the bottom surface 121 of the shallow oil storage area 12 are connected by an inclined surface 13. The sealing surface 103 and the bottom surface 111 of the deep oil storage area 11 are opposite to each other.

[0039] A sealing groove 14 is provided on the sealing surface 103, and mounting holes 15 are provided on the outer side of the sealing groove 14. The outer sides of adjacent mounting holes 15 are connected by transverse reinforcing ribs to form an annular structure surrounding the outer sides of all mounting holes 15 on the oil pan;

[0040] The side surface 112 of the deep oil storage area 11 is provided with an oil drain hole 16 and a crankcase hose fixing hole 17. An oil drain insert 3 is fixed in the oil drain hole 16, and a pre-embedded insert 3 is fixed in the crankcase hose fixing hole 17. The side surface 112 of the deep oil storage area 11 is provided with a protruding structure 113 for increasing the oil storage volume.

[0041] Among them, the oil pan is made of fiber-reinforced thermoplastic composite material through a single injection molding process.

[0042] It can be understood that the sealing surface 103 is the flange surface at the top of the oil pan, that is, the mounting surface when connected to the engine.

[0043] Specifically, the oil drain insert 2 and the embedded insert 3 can be directly molded on the side 112 of the deep oil storage area 11 of the oil pan during injection molding of the oil pan, or the side 112 of the deep oil storage area 11 of the oil pan can be fixedly connected to the oil drain insert 2 and the embedded insert 3 by welding or bonding.

[0044] In order to better understand the specific structure of the engine oil pan in this embodiment, please refer to Figure 3 .

[0045] Compared with the prior art, the engine oil pan of the present invention is injection-molded from a fiber-reinforced thermoplastic composite material, which reduces the difficulty of molding and production costs, and the assembly process is simple and easy to operate; the oil drain insert, embedded insert, etc. are all integrated on the injection-molded oil pan to form an oil pan assembly, which greatly reduces the weight of the product.

[0046] For details, please see Figure 1 In this embodiment, to enhance the overall strength of the oil pan, the annular structure outside the mounting holes 15 comprises at least two layers, with longitudinal support ribs positioned between adjacent annular structures. In other words, adjacent mounting holes 15 are connected by a plurality of transverse reinforcement ribs, forming a multi-layered annular structure surrounding all mounting holes 15 on the oil pan. Furthermore, longitudinal support ribs are positioned between the layers of annular structures, forming a fence structure.

[0047] For further information, please see Figure 2In order to ensure the airtightness between the oil pan and the cylinder body, a rubber sealing gasket 5 is installed in the sealing groove 14. The elasticity of rubber is used to ensure the airtightness between the oil pan and the cylinder body, and rubber has good wear resistance, so the rubber sealing gasket 4 can be recycled after the oil pan is disassembled.

[0048] Furthermore, in order to improve the overall installation strength of the oil pan, a pressure limiting sleeve 5 is installed in the installation hole 15. The pressure limiting sleeve 5 is used to install bolts connecting the engine and the oil pan, and the oil pan is connected to the engine through the bolts.

[0049] Specifically, to ensure that the pressure-limiting sleeve 5 can be stably fixed in the mounting hole 15, the pressure-limiting sleeve 5 can be fixed in the mounting hole 15 by a limiting structure. For example, a limiting structure can be provided in the mounting hole 15 or on the sleeve of the pressure-limiting sleeve 5 to fix the pressure-limiting sleeve 5 in the mounting hole 15. Alternatively, the pressure-limiting sleeve 5 can be fixed in the mounting hole 15 by an interference fit or by bonding. For another example, the pressure-limiting sleeve 5 can also be directly molded on the oil pan during injection molding of the oil pan.

[0050] More specifically, see Figure 2 In this embodiment, the number of the mounting holes 15 is 34, and the arrangement of the mounting holes 15 is specifically 13 in each of the two long sides, and evenly arranged, and 4 in each of the two short sides, and evenly arranged.

[0051] Furthermore, to further enhance the rigidity and strength of the oil pan in this embodiment, the outer surface of the oil pan is provided with intersecting horizontal and vertical reinforcement ribs. These intersecting ribs not only increase the rigidity of the product but also address the noise issues associated with the metal oil pan during driving and improve the oil pan's impact resistance.

[0052] See also Figure 2 In order to further increase the strength of the oil pan, a reinforcing rib 18 is provided at the bottom of the shallow oil storage area 12. Specifically, there are two reinforcing ribs 18, which are arranged in parallel, and the spacing between the two reinforcing ribs 18 is 40-60 mm.

[0053] Please continue to see Figure 1 In this embodiment, an oil dipstick hole 19 is provided on the side of the deep oil storage area 11 where the sealing surface 103 is located, for installing an oil dipstick to determine the oil level to ensure that the oil level is not too high, causing oil waste, or to ensure that the oil level is not too low, causing poor lubrication of the friction surfaces of the engine, thereby causing abnormal jitter and power reduction.

[0054] An oil return hole 114 is provided below the oil dipstick hole 19, and an oil return insert 6 is provided in the oil return hole 114. Through the oil return insert 6, the oil pan is fixedly connected to the oil return structure of the engine, and the oil in the oil return structure flows back to the deep oil storage area 11 through the oil return hole 114 to reduce fuel consumption.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. An oil pan for an engine, characterized in that: It includes deep oil storage area (11) and shallow oil storage area (12); The sealing surfaces (103) of the deep oil storage area (11) and the shallow oil storage area (12) are in the same plane, the bottom surface (111) of the deep oil storage area (11) and the bottom surface (121) of the shallow oil storage area (12) are connected via an inclined surface (13), and the sealing surface (103) and the bottom surface (111) of the deep oil storage area (11) are opposite to each other; A sealing groove (14) is provided on the sealing surface (103), a mounting hole (15) is provided on the outside of the sealing groove (14), and the outsides of adjacent mounting holes (15) are connected by transverse reinforcing ribs to form an annular structure surrounding the outsides of all mounting holes (15) on the oil pan; An oil drain hole (16) and a crankcase hose fixing hole (17) are provided on the side surface (112) of the deep oil storage area (11), an oil drain insert (2) is fixed in the oil drain hole (16), and a pre-buried insert (3) is fixed in the crankcase hose fixing hole (17), and a protruding structure (113) is provided on the side surface (112) of the deep oil storage area (11) for increasing the oil storage volume; The oil pan is made of fiber-reinforced thermoplastic composite material through single-shot injection molding.

2. The engine oil pan according to claim 1, characterized in that: The annular structure outside the mounting hole (15) is composed of at least two layers, and longitudinal supporting ribs are provided between adjacent annular structures.

3. The engine oil pan according to claim 1, characterized in that: A rubber sealing pad (4) is installed in the sealing groove (14).

4. The engine oil pan according to claim 1, characterized in that: A pressure-limiting sleeve (5) is installed in the installation hole (15), and the pressure-limiting sleeve (5) is used to install bolts connecting the engine and the oil pan.

5. The engine oil pan according to claim 4, characterized in that: The pressure-limiting sleeve (5) is fixed in the mounting hole (15) via a limiting structure, or is fixed in the mounting hole (15) via interference fit, or is fixed in the mounting hole (15) via bonding.

6. The engine oil pan according to claim 1, characterized in that: The number of the mounting holes (15) is 34.

7. The engine oil pan according to claim 6, characterized in that: The specific arrangement of the mounting holes (15) is that 13 holes are arranged in each of the two long sides and are evenly arranged, and 4 holes are arranged in each of the two short sides and are evenly arranged.

8. The engine oil pan according to any one of claims 1 to 7, characterized in that: The outer surface of the oil pan is provided with reinforcing ribs intersecting horizontally and vertically.

9. The engine oil pan according to claim 8, characterized in that: The bottom of the shallow oil storage area (12) is provided with reinforcing ribs (18) for increasing the strength of the oil pan.

10. The engine oil pan according to any one of claims 1 to 7, characterized in that: An oil dipstick hole (19) is provided on the side of the deep oil storage area (11) where the sealing surface (103) is located, for installing an oil dipstick to determine the oil level; an oil return hole (114) is provided below the oil dipstick hole (19), and an oil return insert (6) is provided in the oil return hole (114).

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