Oil pump and vehicle

Abstract

This application provides an oil pump and a vehicle, relating to the field of vehicle technology. The oil pump includes a pump body, a filter assembly, and a seal. The pump body has an oil inlet section with a first oil inlet channel. The filter assembly includes a connecting section for a second oil inlet channel, which is connected to the first oil inlet channel, allowing the second and first oil inlet channels to communicate with each other. The seal is disposed between the inner wall of the oil inlet section and the outer wall of the connecting section, and surrounds the connecting section circumferentially. The oil pump provided by this application improves the sealing effect of the seal, enhances the stability of oil pressure during high-speed engine operation, thereby reducing mechanical failures caused by engine wear, and ultimately improving the lifespan of the engine and the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an oil pump and a vehicle. Background Technology

[0002] All-terrain vehicles (ATVs) are vehicles designed specifically for complex terrains. Their engines typically need to run at high speeds (such as 7000 rpm) for extended periods to provide sufficient power output, while the engine's lubrication system needs to maintain stable oil pressure to ensure adequate lubrication of critical components such as crankshafts, pistons, and bearings.

[0003] In related technologies, an oil pump typically includes a pump body and a filter assembly. The pump body is used to pump oil from the oil pan into the main oil passage of the engine and has an oil inlet. The filter assembly is bolted to the oil inlet of the pump body and is used to filter impurities in the oil. There is a seal between the filter assembly and the pump body, and the sealing between the filter assembly and the pump body is achieved by axial compression.

[0004] However, the aforementioned seals are prone to failure, which can lead to a drop in oil pressure in the oil pump, resulting in insufficient lubrication, engine wear, or even mechanical failure. Utility Model Content

[0005] In view of the above problems, this application provides an oil pump and vehicle that can improve the sealing effect of the seals and enhance the stability of the oil pressure, thereby reducing mechanical failures caused by engine wear.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides an oil pump, including a pump body, a filter assembly, and a seal. The pump body has an oil inlet section and an oil inlet channel. The filter assembly includes a connecting section with a second oil inlet channel, the connecting section being connected to the first oil inlet channel so that the second oil inlet channel and the first oil inlet channel are in communication with each other. The seal is disposed between the inner wall of the oil inlet section and the outer wall of the connecting section, and surrounds the circumference of the connecting section.

[0008] In the aforementioned oil pump, it is possible to have a stepped surface on the inner wall of the first oil inlet channel, and a connecting section connected to the first oil inlet channel; there is a gap between the end face of the connecting section near the pump body and the stepped surface.

[0009] In the aforementioned oil pump, the first oil inlet channel includes a first oil inlet section and a second oil inlet section that are interconnected. The diameter of the second oil inlet section is smaller than the diameter of the first oil inlet section, so that a stepped surface is formed between the second oil inlet section and the first oil inlet section. The connecting section is connected to the first oil inlet section.

[0010] In the aforementioned oil pump, it is possible to include at least two seals, with the at least two seals spaced apart along the axial direction of the connecting section.

[0011] In the aforementioned oil pump, it is possible to have at least two sealing grooves provided in the connecting section, each sealing groove extending circumferentially along the connecting section; and to have a seal provided in the corresponding sealing groove.

[0012] In the aforementioned oil pump, it is possible to include O-rings as the sealing components.

[0013] In the aforementioned oil pump, the sealing element includes a sealing ring and at least two sealing portions, the at least two sealing portions being connected to the outer periphery of the sealing ring and integrally formed with the sealing ring; wherein the spacing between two adjacent sealing portions tends to increase in the direction away from the sealing ring.

[0014] In the aforementioned oil pump, it is possible to include a protrusion in the connecting section, which protrudes in a direction away from the axis of the connecting section; the protrusion is fixedly connected to the oil inlet section, and an elastic buffer is provided between the protrusion and the oil inlet section.

[0015] In the aforementioned oil pump, it is possible to achieve that the second oil inlet channel includes a third oil inlet section and a fourth oil inlet section that are interconnected, the fourth oil inlet section is located between the second oil inlet section and the third oil inlet section, and the diameter of the fourth oil inlet section is smaller than the diameter of the third oil inlet section.

[0016] A second aspect of this application provides a vehicle including an engine and an oil pump as described in the first aspect, wherein the engine includes a housing and the oil pump is disposed within the housing.

[0017] The oil pump provided in this application includes a pump body, a filter assembly, and a seal. By opening a first oil inlet channel in the oil inlet section and connecting the connecting section within the first oil inlet channel, the relative displacement of the pump body and the filter assembly along the radial direction of the connecting section during vibration is reduced. Furthermore, the second oil inlet channel communicates with the first oil inlet channel, ensuring that the oil in the filter assembly flows rapidly into the pump body. By placing the seal between the inner wall of the oil inlet section and the outer wall of the connecting section, and surrounding the circumference of the connecting section, the pump body and the filter assembly can maintain sealed contact under vibration, improving the sealing effect of the seal, ensuring stable oil pressure, and thereby reducing mechanical failures caused by wear.

[0018] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the oil pump and vehicle provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of an oil pump from one perspective in related technologies;

[0021] Figure 2 This is a cross-sectional view of an oil pump in related technologies;

[0022] Figure 3 This is a schematic diagram of the structure of an oil pump from another perspective in related technologies;

[0023] Figure 4 This is a schematic diagram of the structure of the oil pump provided in the embodiments of this application;

[0024] Figure 5 This is a cross-sectional view of the oil pump provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Pump body; 110. Oil inlet section; 111. Stepped surface; 112. Gap; 120. First oil inlet channel; 121. First oil inlet section; 122. Second oil inlet section; 200. Filter screen assembly; 210. Connecting section; 211. Sealing groove; 220. Second oil inlet channel; 221. Third oil inlet section; 222. Fourth oil inlet section; 230. Protrusion; 300. Seal; 400. Bolt. Detailed Implementation

[0027] As described in the background section, the sealing structure in the related art is prone to failure, and the main reason for this is: (Refer to...) Figure 1 and Figure 2 As shown, the interface between the filter assembly and the oil pump is typically connected by two fixing bolts, refer to... Figure 3 As shown, the two bolts are misaligned and the connecting line does not pass through the center of the oil inlet. When the engine is running at high speed, the oil pump is prone to shaking, causing uneven stress on the seals and relative displacement, leading to seal failure. This, in turn, causes the oil pressure of the oil pump to drop (e.g., from 450 kPa to 298 kPa), resulting in insufficient lubrication, engine wear, or even mechanical failure.

[0028] To address the aforementioned technical problems, this application provides an oil pump and a vehicle, wherein the oil pump includes a pump body, a filter assembly, and a seal. The pump body has an oil inlet section with a first oil inlet channel within it; the filter assembly has a connecting section with a second oil inlet channel within it, and the connecting section is connected to the first oil inlet channel to ensure communication between the two channels; the seal is disposed between the inner wall of the oil inlet section and the outer wall of the connecting section, and surrounds the connecting section circumferentially. By providing a first oil inlet channel in the oil inlet section and connecting the connecting section within it, the relative displacement of the pump body and filter assembly along the radial direction of the connecting section during vibration is reduced. Furthermore, the communication between the second and first oil inlet channels ensures that oil from the filter assembly flows into the pump body. By placing the seal between the inner wall of the oil inlet section and the outer wall of the connecting section, and around the circumference of the connecting section, the pump body and filter assembly can maintain sealed contact even under vibration, improving the sealing effect of the seal, ensuring stable oil pressure, and thus reducing mechanical failures caused by wear.

[0029] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] On the one hand, refer to Figure 4 and Figure 5 As shown in the illustration, this application provides an oil pump, including a pump body 100, a filter assembly 200, and a seal 300. The pump body 100 has an oil inlet section 110, and the oil inlet section 110 has a first oil inlet channel 120. The pump body 100 pumps oil to various parts of the engine that require lubrication through the first oil inlet channel 120. Exemplarily, the pump body 100 is a gear pump. The rotation of the gears creates negative pressure, thereby drawing oil from the oil pan into the pump chamber through the oil inlet channel. After the pressure is regulated by a valve body in the pump body 100, the oil enters the main oil passage of the engine, ensuring sufficient lubrication of all components within the engine. In other embodiments, the pump body 100 can also be a rotary pump body 100, achieving the same effect.

[0031] The filter assembly 200 includes a connecting section 210 with a second oil inlet channel 220. The connecting section 210 is connected to the first oil inlet channel 120 so that the second oil inlet channel 220 and the first oil inlet channel 120 are interconnected, ensuring that the filtered oil can be pumped to the first oil inlet channel 120. In this embodiment, the filter assembly 200 is installed at one end of the pump body 100 oil inlet and is immersed in the oil in the engine oil pan. It can be understood as a filter used to filter mechanical impurities in the oil, such as metal shavings, sealant fragments, etc., to prevent these impurities from entering the pump body 100, thereby preventing wear, jamming or damage to the meshing parts (such as gears or rotors) in the pump body 100. It can also prevent a large amount of debris and other impurities from entering the pump body 100 and accumulating, thus blocking the oil inlet channel.

[0032] For example, the filter in the filter assembly 200 can be supported by a metal mesh, glass fiber, or synthetic fiber, and the filtration accuracy can be 10-100 μm. In other embodiments, a valve body, specifically a bypass valve, can be integrated into the filter assembly 200 to allow oil to pass directly when the filter assembly 200 is clogged, thus preventing lubrication interruption during engine operation.

[0033] In this embodiment, the connection between the connecting section 210 and the oil inlet section 110 can be understood as a mating connection, with the seal 300 disposed at the radial mating surface of the connecting section 210 and the oil inlet section 110. This mating method ensures that the pump body 100 and the filter assembly 200 can be quickly and accurately installed to their preset relative positions during assembly, eliminating errors caused by the connection method and ensuring alignment between the first oil inlet channel 120 of the pump body 100 and the second oil inlet channel 220 of the filter assembly 200. Furthermore, the mating surfaces of the connecting section 210 and the oil inlet section 110 form a mechanical interlock, enhancing the structural rigidity of the entire oil pump and preventing radial relative displacement between the pump body 100 and the filter assembly 200 during operation.

[0034] Because the pump body 100 and the filter assembly 200 are connected by bolts 400, and the bolts 400 are unevenly distributed, relative displacement will occur between the pump body 100 and the filter assembly 200 when the engine is running at high speed, which will lead to a drop in oil pressure and insufficient lubrication. Therefore, a suitable sealing structure needs to be provided between the pump body 100 and the filter assembly 200 to avoid the above problems. In this embodiment, the oil pump also includes a seal 300, which is disposed between the inner wall of the oil inlet section 110 of the pump body 100 and the outer wall of the connecting section 210 of the filter assembly 200, and surrounds the circumference of the connecting section 210 to form a radial seal. This ensures a good sealing effect even when the connecting section 210 and the oil inlet section 110 of the pump body 100 are moving relative to each other during high-speed engine operation, keeping the oil pressure in the oil passage relatively stable and preventing insufficient lubrication.

[0035] In other embodiments, the bolts 400 connecting the pump body 100 and the filter assembly 200 can be made to pass through the center of the oil inlet channel, so that the sealing surfaces maintain stable contact at high speeds and ensure that the sealing surfaces are subjected to uniform force.

[0036] As one feasible implementation, a stepped surface 111 is provided on the inner wall of the first oil inlet channel 120, and a connecting section 210 is connected to the first oil inlet channel 120; a gap 112 is provided between the end face of the connecting section 210 near the pump body 100 and the stepped surface 111.

[0037] In this embodiment, the oil inlet section 110 and the connecting section 210 are connected by a fitting method, and both the oil inlet section 110 and the connecting section 210 have oil inlet channels. The oil inlet section 110, the connecting section 210, and the oil inlet channels are coaxially arranged. Therefore, a stepped surface 111 is formed between the first oil inlet section 121 and the second oil inlet section 122. This can limit the relative position of the oil inlet section 110 and the connecting section 210 along the axial direction of the connecting section 210, realize the limiting connection between the two, and reduce the displacement at the connection. The radial positioning effect of the fitting mating surface and the axial positioning effect of the stepped surface 111 combine to ensure that the first oil inlet section 121 and the second oil inlet section 122 can be aligned to form a continuous and smooth oil flow channel, avoiding oil throttling caused by misalignment, which would ultimately lead to insufficient lubrication.

[0038] In this embodiment, a gap 112 is formed between the end face of the connecting section 210 near the pump body 100 and the stepped surface 111. This gap can be understood as an assembly gap, which buffers the oil flow, making the oil pressure flowing to the pump body 100 more stable. It also prevents mechanical damage such as wear on the mating surfaces caused by direct contact between the connecting section 210 and the oil inlet section 110. In other embodiments, an annular sealing gasket can also be provided at the gap 112 to prevent oil from flowing to the connection surface between the oil inlet section 110 and the connecting section 210, forming a first sealing barrier, which can further improve the sealing effect of the oil pump.

[0039] As one feasible implementation, the first oil inlet channel 120 includes a first oil inlet section 121 and a second oil inlet section 122 that are interconnected. The diameter of the second oil inlet section 122 is smaller than the diameter of the first oil inlet section 121, so that a stepped surface 111 is formed between the second oil inlet section 122 and the first oil inlet section 121. The connecting section 210 is connected to the first oil inlet section 121.

[0040] In the embodiments of this application, a portion of the connecting section 210 of the filter assembly 200 is embedded in the first oil inlet section 121. The diameter of the first oil inlet section 121 in the first oil inlet channel 120 is larger than the diameter of the second oil inlet section 122. This ensures that the second oil inlet channel 220 opened in the connecting section 210 and the first oil inlet channel 120 opened in the oil inlet section 110 form a continuous and smooth oil flow channel, avoiding the formation of protrusions at the connection point, thereby reducing the oil flow resistance.

[0041] As one possible implementation, the number of seals 300 includes at least two, and the at least two seals 300 are spaced apart along the axial direction of the connecting section 210.

[0042] As one possible implementation, the connecting segment 210 is provided with at least two sealing grooves 211, each sealing groove 211 extending circumferentially along the connecting segment 210; the sealing element 300 is disposed in the corresponding sealing groove 211.

[0043] For example, the number of seals 300 corresponds one-to-one with the number of sealing grooves 211, and multiple seals 300 are respectively disposed in multiple sealing grooves 211 to form multiple sets of sealing structures. At least two seals 300 arranged at intervals along the axial direction of the connecting section 210 can achieve multiple seals, which can also be understood as tandem seals, and can further improve the sealing effect. Specifically, when the first set of sealing structures fails, the second set of sealing structures can also achieve a good sealing effect. In addition, in ultra-high oil pressure systems, a single sealing structure cannot withstand all the oil pressure when the engine is rotating at high speed and will be squeezed out or damaged. Therefore, multiple sets of sealing structures can decompose the oil pressure, which can increase the oil pressure that the sealing structure can withstand.

[0044] In another embodiment, multiple sealing steps can be provided in the sealing groove 211, and a sealing element 300 is provided at each step. A progressive seal is formed by compression at each step, and it can absorb vibration energy.

[0045] In some embodiments, the inner wall of the sealing groove 211 may be provided with a microporous structure. The microporous structure can absorb the machine oil on the surface of the seal 300, forming a dynamic lubricating film. This reduces frictional loss and enhances the sealing effect of the seal 300 through capillary action. Furthermore, a sloping guide groove may be provided within the sealing groove 211, allowing the seal 300 to further compensate for the relative displacement between the oil inlet section 110 and the connecting section 210 through elastic deformation during vibration.

[0046] As one possible implementation, the seal 300 includes an O-ring.

[0047] For example, an O-ring is a circular elastic seal 300 with a circular cross-section, which can effectively seal the oil, prevent oil leakage, and reduce oil pressure. It is typically made of elastic materials such as nitrile rubber or silicone, which not only resists oil corrosion, ensuring long-term sealing reliability and lifespan, but also has high-temperature resistance, adapting to temperature changes during engine operation. Furthermore, the O-ring has high elasticity; after installation, it deforms under pressure, thus tightly adhering to the outer wall of the connecting section 210 and the inner wall of the oil inlet section 110, ensuring that the O-ring maintains good sealing performance even under high-pressure conditions of the oil pump.

[0048] In another embodiment, a double-layer O-ring can be used, wherein the inner layer can be made of silicone rubber and the outer layer can be made of fluororubber to adapt to both high temperature and vibration environments.

[0049] As another possible implementation, the seal 300 includes a sealing ring and at least two sealing portions, the at least two sealing portions being connected to the outer periphery of the sealing ring and integrally formed with the sealing ring; wherein the spacing between two adjacent sealing portions tends to increase in the direction away from the sealing ring.

[0050] It is understandable that the sealing element 300 formed by the sealing ring and at least two sealing parts can be understood as a lip seal, and the sealing parts are sealing lips. The two sealing lips are in a "Y" shape along the direction away from the sealing ring, thus showing a tendency for the distance between the two sealing parts to increase. Among them, the sealing ring is in contact with the bottom wall of the sealing groove 211, and the two sealing parts are in contact with the two opposite side walls of the sealing groove 211.

[0051] For example, the sealing ring and sealing lip are elastic elements, which can be rubber bodies, specifically fluororubber bodies, possessing corrosion resistance and high-temperature resistance properties. Under the action of oil pressure, they can continuously adhere to the sidewall of the sealing groove 211, and when slight wear occurs on the lip of the sealing part, its elastic deformation maintains the sealing contact. This not only achieves a good sealing effect but also extends the sealing time. In addition, a spring can be provided inside the sealing ring, and the elasticity can continuously apply an additional contractile force to the sealing part, compensating for the wear of the lip during long-term use, further ensuring that the lip has sufficient and stable clamping force on the sidewall of the sealing groove 211.

[0052] As one feasible implementation, the connecting section 210 includes a protrusion 230, which protrudes in a direction away from the axis of the connecting section 210; the protrusion 230 is fixedly connected to the oil inlet section 110, and an elastic buffer is provided between the protrusion 230 and the oil inlet section 110.

[0053] In this embodiment, the protrusion 230 can be understood as an annular protrusion provided in the radial direction of the connecting segment 210. The protrusion 230 is integrally provided with the connecting segment 210, which can further limit the relative position along the axial direction of the connecting segment 210.

[0054] For example, an elastic buffer, specifically a rubber gasket, is provided between the protrusion 230 and the oil inlet section 110. On the one hand, when the engine is running at high speed, it can absorb the vibration energy between the oil pump body 100 and the filter assembly 200, and on the other hand, it can convert the concentrated and uneven clamping force from fasteners such as bolts 400 into a uniform pressure distributed across the entire contact surface of the oil inlet section 110 and the connecting section 210. This uniform transmission of clamping force reduces wear on the seal 300, thereby extending its service life.

[0055] As one feasible implementation, the second oil inlet channel 220 includes a third oil inlet section 221 and a fourth oil inlet section 222 that are interconnected. The fourth oil inlet section 222 is located between the second oil inlet section 122 and the third oil inlet section 221, and the diameter of the fourth oil inlet section 222 is smaller than the diameter of the third oil inlet section 221.

[0056] It is understandable that when the engine is running, the oil flow rate can be expressed as the product of the cross-sectional area of ​​the flow channel and the flow velocity when the oil is pumped from the oil pan into the main oil passage of the engine. When the flow rate remains constant, the oil flow velocity can be adjusted by changing the cross-sectional area of ​​the oil inlet channel. In this embodiment, when the oil flows to the pump body 100, it flows sequentially through the third oil inlet section 221, the fourth oil inlet section 222, and the second oil inlet section 122. The cross-sectional area of ​​the fourth oil inlet section 222 is equal to, but smaller than, the cross-sectional area of ​​the second oil inlet section 122. When the oil flows from the third oil inlet section 221 to the fourth oil inlet section 222, the cross-sectional area decreases, which can accelerate the oil flow velocity and ensure that the oil quickly flows through the inlet section to the parts inside the engine that need to be lubricated, thereby quickly forming an oil film to ensure the continuous and stable operation of each part.

[0057] In this embodiment, the specific assembly process of the pump body 100, filter assembly 200 and seal 300 is as follows: After applying machine oil to the seal 300, it is embedded into the sealing groove 211 of the connecting section 210. The connecting section 210 of the filter assembly 200 is aligned with the oil inlet section 110 of the pump body 100 and installed. Then, it is fixed with bolts 400 to ensure that the sealing surfaces are tightly fitted.

[0058] In summary, the oil pump provided in this application embodiment uses a mating connection method to place the connecting section 210 of the filter assembly 200 within the first oil inlet channel 120 of the pump body 100. This reduces the relative displacement between the pump body 100 and the filter assembly 200 during vibration. A sealing groove 211 is formed at the radial mating surface of the connecting section 210, and the seal 300 is disposed within the sealing groove 211. After installation, the deformation of the seal 300 allows the pump body 100 and the filter assembly 200 to maintain sealed contact under vibration, improving the sealing effect of the seal 300, ensuring stable oil pressure, and thus reducing mechanical failures caused by wear.

[0059] On the other hand, embodiments of this application provide a vehicle including an engine and the aforementioned oil pump; the engine includes a housing, the oil pump is disposed within the housing, and is used to pump oil from the housing to various parts of the engine that require lubrication.

[0060] It is understood that since the vehicle in this application adopts the technical solution of the above-described oil pump embodiment, it has at least the beneficial effects brought about by the technical solution of the above-described oil pump embodiment, which will not be elaborated here.

[0061] The oil pump is a key component of the engine lubrication system, providing a stable supply of high-pressure oil to the engine. The engine provides driving force to the vehicle, essentially converting the chemical energy of fuel into mechanical energy to propel the vehicle. For example, the vehicle provided in this application embodiment can be an all-terrain vehicle or other types of vehicles.

[0062] In this embodiment, the engine housing includes a cylinder block, a cylinder head, and an oil pan. The cylinder block provides a mounting base and support structure for the engine's moving parts, such as the crankshaft, piston, and camshaft, and has an internal cylindrical cavity (cylinder) that provides a track for the piston's reciprocating motion. The cylinder head is mounted on top of the cylinder block and sealed with a cylinder head gasket to form a closed space, used to generate high pressure during fuel combustion. The oil pan is an oil reservoir installed at the bottom of the cylinder block for storing engine oil; exemplarily, the oil pan can be made of steel plate or aluminum alloy.

[0063] In the embodiments of this application, the specific working principle of the engine and the oil pump includes, in sequence, the engine driving the oil pump to operate, the oil pump sucking and pressing oil, and delivering oil to various parts of the engine and returning it.

[0064] The specific process of the engine driving the oil pump is as follows: When the engine is running, the piston in the engine reciprocates within the cylinder, driving the crankshaft of the engine through the connecting rod mechanism. The crankshaft, in turn, drives the oil pump through a transmission mechanism. The transmission mechanism can be a gear pair, specifically, a driving gear is installed at one end of the engine crankshaft, meshing with the driven gear of the oil pump.

[0065] The working principle of the oil pump's suction and pressure functions is as follows: During the suction phase, the engine's drive gear rotates in the opposite direction. When the two gears disengage, the volume between the gears (the suction chamber) increases, creating a localized negative pressure. At this time, the oil in the oil pan is drawn into the suction chamber by the pump under air pressure, filling the gaps between the gear teeth. During the pressure phase, the oil-filled teeth rotate with the gears, carrying the oil into the outlet side. At this time, the two gears engage, the volume between the gears (the pressure chamber) decreases, increasing the pressure, and the oil flows out from the outlet into the engine's main oil passage.

[0066] The specific process of oil delivery to various engine components and return is as follows: the oil entering the main oil passage of the engine flows to various components to be lubricated through branch oil passages set in the main oil passage, such as the crankshaft, camshaft, and piston. The oil that has completed the lubrication and cooling work returns to the oil pan by gravity. The oil pump continuously pumps oil to form a cycle.

[0067] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0068] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "an embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the scope of knowledge of those skilled in the art.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An oil pump, characterized in that, include: Pump body (100), the pump body (100) having an oil inlet section (110), and the oil inlet section (110) having a first oil inlet channel (120); A filter assembly (200) includes a connecting section (210) having a second oil inlet channel (220), the connecting section (210) being connected to the first oil inlet channel (120) such that the second oil inlet channel (220) is in communication with the first oil inlet channel (120); A seal (300) is disposed between the inner wall of the oil inlet section (110) and the outer wall of the connecting section (210), and surrounds the circumference of the connecting section (210); The inner wall of the first oil inlet channel (120) is provided with a stepped surface (111), and the connecting section (210) is connected to the first oil inlet channel (120); The connecting section (210) has a gap (112) between the end face of the connecting section (210) near the pump body (100) and the stepped surface (111), and an annular sealing gasket is provided in the gap (112); The number of the seals (300) includes at least two, and the at least two seals (300) are arranged at intervals along the axial direction of the connecting segment (210); The connecting segment (210) is provided with at least two sealing grooves (211), each of the sealing grooves (211) extending circumferentially along the connecting segment (210); The sealing element (300) is disposed in the corresponding sealing groove (211).

2. The oil pump according to claim 1, characterized in that, The first oil inlet channel (120) includes a first oil inlet section (121) and a second oil inlet section (122) that are interconnected. The diameter of the second oil inlet section (122) is smaller than the diameter of the first oil inlet section (121) so that the step surface (111) is formed between the second oil inlet section (122) and the first oil inlet section (121). The connecting section (210) is connected to the first oil inlet section (121).

3. The oil pump according to any one of claims 1-2, characterized in that, The seal (300) includes an O-ring.

4. The oil pump according to any one of claims 1-2, characterized in that, The sealing element (300) includes a sealing ring and at least two sealing portions, the at least two sealing portions being connected to the outer periphery of the sealing ring and integrally formed with the sealing ring; wherein the spacing between two adjacent sealing portions tends to increase in the direction away from the sealing ring.

5. The oil pump according to any one of claims 1-2, characterized in that, The connecting segment (210) includes a protrusion (230) that protrudes in a direction opposite to the axis of the connecting segment (210); The protrusion (230) is fixedly connected to the oil inlet section (110), and an elastic buffer is provided between the protrusion (230) and the oil inlet section (110).

6. The oil pump according to claim 2, characterized in that, The second oil inlet channel (220) includes a third oil inlet section (221) and a fourth oil inlet section (222) that are interconnected. The fourth oil inlet section (222) is located between the second oil inlet section (122) and the third oil inlet section (221), and the diameter of the fourth oil inlet section (222) is smaller than the diameter of the third oil inlet section (221).

7. A vehicle, characterized in that, The invention includes an engine and an oil pump as described in any one of claims 1-6, wherein the engine includes a housing and the oil pump is disposed within the housing.

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