A multi-functional oil cooler

Abstract

This utility model discloses a multifunctional oil cooler, including an oil cooler base and an oil cooling core. The oil cooling core is vertically arranged and has an oil inlet, an oil outlet, a liquid inlet, and a liquid outlet inside. The oil cooler base is connected to the bottom of the oil cooling core and includes an integrally formed oil cooler base body and a water pump base. The oil cooler base body has independently provided first oil inlet channels, first oil outlet channels, first liquid inlet channels, and first liquid outlet channels communicating with the oil inlet, oil outlet, liquid inlet, and liquid outlet, respectively. The water pump base is located on the right side of the oil cooler base body and has a second liquid outlet channel communicating with the first liquid inlet channel. This allows some of the coolant, pressurized by the water pump, to enter the oil cooling core from the second liquid outlet channel through the first liquid inlet channel, and the coolant circulating within the oil cooling core to finally flow out from the first liquid outlet channel. The oil cooler base body and the water pump base are integrally formed.

Description

Technical Field

[0001] This utility model relates to the field of cooler technology, and in particular to a multifunctional oil cooler. Background Technology

[0002] In the engine's cooling and lubrication system, the oil cooler, water pump, and thermostat housing are all key components ensuring stable engine operation. These three components work together to regulate oil temperature and manage coolant circulation. The oil cooler is the core device for oil heat exchange, maintaining the oil temperature within a suitable operating range through heat transfer with the coolant or air. This prevents the oil from oxidizing and deteriorating at high temperatures or its viscosity from decreasing, ensuring its lubrication, friction reduction, and sealing performance for the engine's moving parts. The water pump drives the coolant to circulate at high speed within the cooling system, delivering heat dissipation medium to the oil cooler, engine block, cylinder head, and other heat-generating components. The thermostat housing houses the thermostat and automatically adjusts the coolant's circulation path and flow rate, enabling rapid engine warm-up during cold starts and precise temperature control under normal operating conditions. Currently, the industry generally adopts a layout of "independent oil cooler installation + side-mounted water pump". The oil cooler needs to be fixed to the side or front of the engine through a matching mounting bracket (such as an oil cooler mount), while the water pump is separately mounted on the side of the engine block. The coolant passage between the two and the thermostat mount needs to be achieved through multiple sections of hose. This connection structure relies on the flexibility of the hose to adapt to the installation position deviations between the oil cooler, water pump, and thermostat mount. At the same time, the coolant is sealed through the sealing joints at both ends of the hose to prevent leakage.

[0003] However, the aforementioned structure, which uses rubber hoses to connect the oil cooler, water pump, and thermostat seat, has significant technical defects in actual use, with water leakage being the most prominent and frequent problem. During engine operation, continuous vibration occurs, and the ambient temperature around the oil cooler fluctuates drastically. The rubber hoses are constantly subjected to a combination of vibration, high temperature, and coolant corrosion, making them prone to rubber aging, pipe wall cracking, and elasticity loss. This leads to a gradual decrease in the seal between the hoses and the oil cooler / water pump interfaces, resulting in coolant leakage. Furthermore, the connection between the hoses and other components relies on manual assembly. Deviations in the tightening force of the sealing joints or the installation angle of the hoses during assembly can directly disrupt the sealing pressure balance at the interfaces, creating a hidden risk of leakage. Once a water leak occurs, it will not only cause the coolant level in the cooling system to drop, resulting in insufficient heat exchange medium in the oil cooler, reduced oil cooling efficiency, and abnormally high oil temperature, which in turn will lead to poor lubrication and increased wear of the engine moving parts; it may also cause secondary failures such as corrosion, short circuits or seizures in electrical or moving parts in the engine compartment due to coolant seepage, and in severe cases, even engine shutdown, which will significantly increase vehicle maintenance costs and driving safety risks.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this utility model is to propose a multifunctional oil cooler, in which the oil cooler base body and the water pump base are integrally molded, and the continuous base structure forms an integral sealing boundary, reducing potential leakage points.

[0006] Therefore, this utility model proposes a multifunctional oil cooler.

[0007] Preferably, the present invention may also have the following technical features:

[0008] A multifunctional oil cooler includes an oil cooler base and an oil cooling core; wherein the oil cooling core is configured to be vertically arranged, and the oil cooling core is provided with an oil inlet, an oil outlet, a liquid inlet, and a liquid outlet;

[0009] The oil cooler base is connected to the bottom of the oil cooler core. The oil cooler base includes an integrally formed oil cooler base body and a water pump base. The oil cooler base body is provided with a first oil inlet channel, a first oil outlet channel, a first liquid inlet channel and a first liquid outlet channel that are connected to the oil inlet, the oil outlet, the liquid inlet and the liquid outlet, respectively.

[0010] The water pump base is located on the right side of the oil cooler base body. The water pump base is provided with a second outlet channel that communicates with the first inlet channel, so that part of the coolant after being pressurized by the water pump can enter the oil cooling core from the second outlet channel through the first inlet channel, and the coolant circulating in the oil cooling core can eventually flow out from the first outlet channel.

[0011] Preferably, it further includes a filter holder integrally formed with the oil cooler base body. The filter holder is located at the lower left of the oil cooler base body. The filter holder is provided with an oil inlet and a second oil inlet passage that are interconnected. The second oil inlet passage is connected to the first oil inlet passage so that the oil entering from the oil inlet passage can pass through the second oil inlet passage and the first oil inlet passage, and then enter the oil cooling core from the oil inlet passage. The oil circulating in the oil cooling core can flow out from the first oil outlet passage.

[0012] Preferably, it further includes a filter end cap integrally formed with the oil cooler seat body. The filter end cap is disposed on the left side of the filter seat. The filter end cap is provided with a second oil outlet channel communicating with the first oil outlet channel, so that the oil flowing out through the first oil outlet channel can eventually flow into the filter from the second oil outlet channel.

[0013] Preferably, the oil inlet, the oil outlet, the liquid inlet, and the liquid outlet are arranged symmetrically at four corners and are respectively located at the upper right corner, lower left corner, lower right corner, and upper left corner of the bottom of the oil cooling core.

[0014] Preferably, the system further includes a mounting plate, on which a first through hole is provided corresponding to the positions of the oil inlet, the oil outlet, the liquid inlet, and the liquid outlet, so that engine oil and coolant can flow through the first through hole between the oil cooler seat and the oil cooling core; the mounting plate is configured to match the shape of the oil cooler seat body, and a plurality of second through holes are provided on the mounting plate, through which a connector is passed to fix the oil cooling core to the oil cooler seat body.

[0015] Preferably, a first groove is provided on the end face of the oil cooler seat body that contacts the mounting plate. The first groove is provided on the side wall surrounding the first oil inlet, the first oil outlet, the first liquid inlet, and the first liquid outlet, and a sealing ring is provided in the first groove.

[0016] Preferably, it further includes a bypass valve and a pressure relief valve. The second oil inlet channel is vertically arranged and extends away from the oil outlet. The bypass valve is disposed in the extended channel. A third oil outlet channel is vertically arranged in the filter housing. The upper end of the third oil outlet channel is connected to the first oil outlet channel. The pressure relief valve is disposed in the third oil outlet channel. When the bypass valve is configured to open, the engine oil entering the second oil inlet channel from the oil outlet can partially enter the first oil outlet channel through the bypass valve and partially flow into the oil pan from the pressure relief valve.

[0017] Preferably, the second oil inlet extends away from the oil outlet and penetrates the side wall of the oil cooler housing, with a plug provided at the penetration point.

[0018] Preferably, it also includes a small circulation interface, which is connected to the water pump base. A connecting pipe is provided at the small circulation interface, and the two ends of the connecting pipe are respectively connected to the small circulation interface and the thermostat. The connecting pipe is a flexible hose, and O-rings are integrally provided on the outer rings of both ends.

[0019] The beneficial effects of this utility model compared with the prior art include:

[0020] 1. The oil cooler housing and water pump housing of this utility model adopt an integrated molding process, forming an integral sealing boundary through a continuous base structure, reducing potential leakage points; the integrated structure reduces the number of external pipelines (such as rubber hoses and metal pipes), simplifies the pipeline layout in the engine compartment, and reserves more installation space for other engine components, improving the layout flexibility of the vehicle's power system; the integrated molding process integrates the oil cooler housing and water pump housing, which originally required separate processing, into a single component, reducing machining processes (such as positioning hole and thread interface processing) and the number of tooling fixtures, thus reducing the unit manufacturing cost.

[0021] 2. The vertically arranged oil cooling core and the integrated design of the oil cooler base body and water pump base of this utility model greatly reduce the overall space occupied. Compared with the traditional horizontally arranged oil cooling core + split water pump base structure, the projected area in the horizontal direction of this solution is reduced.

[0022] 3. The integrated design of this utility model reduces the number of vulnerable parts (such as rubber seals and clamps), reduces the number of sealing components that need to be checked during routine maintenance, shortens maintenance time, and facilitates quick location of fault points (such as blockages and leaks) through pressure testing by the centralized arrangement of inlet and outlet interfaces and independent channels at the bottom of the oil cooler core, thereby improving maintenance efficiency. For end users, it can significantly reduce the frequency of maintenance and parts replacement costs throughout the vehicle's life cycle, and improve the economic efficiency of use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0024] Figure 2 This is a top view of a specific embodiment of the present invention.

[0025] Figure 3 This is a specific embodiment of the present utility model. Figure 2 A sectional view taken along the CC section.

[0026] Figure 4 This is a specific embodiment of the present utility model. Figure 2 A sectional view taken along section AA.

[0027] Figure 5 This is a specific embodiment of the present utility model. Figure 2 A sectional view taken along section BB.

[0028] Figure 6 This is a schematic diagram of the structure of the oil cooler seat according to a specific embodiment of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1-Oil cooler seat; 11-Oil cooler seat body; 111-First oil inlet; 112-First oil outlet; 113-First liquid inlet; 114-First liquid outlet; 115-First groove; 12-Water pump seat; 121-Second liquid outlet; 13-Filter seat; 131-Oil inlet; 132-Second oil inlet; 133-Third oil outlet; 14-Filter end cap; 141-Second oil outlet; 2-Oil cooler core; 21-Oil inlet; 22-Oil outlet; 23-Liquid inlet; 24-Liquid outlet; 3-Filter; 5-Mounting plate; 51-First through hole; 52-Second through hole; 6-Bypass valve; 7-Pressure relief valve; 8-Plug; 9-Small circulation interface; 10-Connecting pipe; 101-O-ring. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0031] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0032] A multi-functional oil cooler, such as Figures 1-6 As shown, it includes an oil cooler base 1 and an oil cooler core 2; wherein, the oil cooler core 2 is configured to be vertically arranged, and the oil cooler core 2 is provided with an oil inlet 21, an oil outlet 22, a liquid inlet 23 and a liquid outlet 24, so that the oil and coolant can flow in the oil cooler core 2, so that the coolant cools the oil and reaches a suitable temperature;

[0033] The oil cooler base 1 is connected to the bottom of the oil cooler core 2. The oil cooler base 1 includes an integrally formed oil cooler base body 11 and a water pump base 12. The oil cooler base body 11 is internally provided with a first oil inlet channel 111, a first oil outlet channel 112, a first liquid inlet channel 113 and a first liquid outlet channel 114 that communicate with the oil inlet 21, the oil outlet 22, the liquid inlet 23 and the liquid outlet 24, respectively.

[0034] The water pump base 12 is located on the right side of the oil cooler base body 11. The water pump base 12 is provided with a second outlet channel 121 that communicates with the first inlet channel 113, so that part of the coolant after being pressurized by the water pump can enter the oil cooler core 2 from the second outlet channel 121 through the first inlet channel 113. The coolant circulating in the oil cooler core 2 can eventually flow out from the first outlet channel 114.

[0035] Specifically, to more intuitively demonstrate the flow path of engine oil and coolant within the oil cooler housing 1 of this application, such as... Figure 5 As shown, four types of leads are used to mark the directions of fluid inlet and outlet and oil inlet and outlet. The lead path with circles is the first fluid outlet channel 114. Its left end is the channel for coolant to come out from the oil cooler core 2 through the outlet 24. This channel is also the direct channel for coolant after water pump pressurization. That is, this part of the coolant does not pass through the oil cooler core 2 and flows directly out from the first fluid outlet channel 114 to the high-temperature components of the engine (such as cylinder block, cylinder head, fuel injectors, etc.). Figure 5 The positions of the oil inlet 21, oil outlet 22, liquid inlet 23, and liquid outlet 24 are also indicated by dashed lines. Figure 2 The sectional view along BB is Figure 5 As shown, actually Figure 5 The positions of the oil inlet 21, oil outlet 22, liquid inlet 23, and liquid outlet 24 are not visible; they are shown here with dashed lines only to aid in understanding the scheme of this application.

[0036] In traditional designs, the water pump and oil cooler housing 1 are connected via hoses. Long-term exposure to engine vibration and temperature cycling makes them prone to coolant leakage due to seal aging. The aforementioned oil cooler housing body 11 and water pump housing 12 are manufactured using a one-piece molding process, forming an integral sealing boundary through a continuous base structure, reducing potential leakage points. The vertically positioned oil cooler core 2 and the integrated design of the oil cooler housing body 11 and water pump housing 12 significantly reduce the overall space required. Compared to the traditional horizontally arranged oil cooler core 2 + separate water pump housing 12 structure, this solution reduces the horizontal projected area. The integrated structure reduces the number of external pipelines (such as hoses and metal pipes), simplifying the piping layout in the engine compartment, reserving more installation space for other engine components, and improving the flexibility of the vehicle's powertrain layout. The one-piece molding process integrates the oil cooler housing body 11 and water pump housing 12, which originally required separate machining, into a single component, reducing machining processes (such as positioning hole and threaded interface machining) and the number of tooling fixtures, thus lowering the unit manufacturing cost. The integrated design reduces the number of vulnerable parts (such as rubber seals and clamps), reduces the number of sealing components that need to be checked during routine maintenance, and shortens maintenance time. The centralized inlet and outlet interfaces and independent channel design at the bottom of the oil cooler core 2 facilitates quick location of fault points (such as blockages and leaks) through pressure testing, improving maintenance efficiency. For end users, it can significantly reduce the frequency of maintenance and parts replacement costs throughout the vehicle's life cycle, improving the economic efficiency of use.

[0037] In some examples of this embodiment, such as Figures 3-6As shown, it also includes a filter seat 13 and a filter end cap 14 integrally formed with the oil cooler seat body 11. The filter seat 13 is located at the lower left of the oil cooler seat body 11. The filter seat 13 is provided with an oil inlet 131 and a second oil inlet 132 that are interconnected. The second oil inlet 132 is connected to the first oil inlet 111 so that the oil entering from the oil inlet 131 can enter the oil cooling core 2 from the second oil inlet 132 through the first oil inlet 111 and then from the oil inlet 21. The oil circulating in the oil cooling core 2 can flow out from the first oil outlet 112. Specifically, the filter end cap 14 is located on the left side of the filter seat 13. The filter end cap 14 has a second oil outlet 141 that communicates with the first oil outlet 112, so that the oil flowing out of the first oil outlet 112 can eventually flow into the filter 3 through the second oil outlet 141. Compared with the traditional structure in which the filter seat 13, filter end cap 14 and oil cooler seat body 11 are separately connected, the one-piece molding eliminates at least two sealing interfaces (such as the flange connection surface between the filter seat 13 and the oil cooler seat body 11, and the threaded connection surface between the filter end cap 14 and the filter seat 13), reducing potential leakage points and avoiding leakage problems when the oil is transferred between the filter 3 and the oil cooler. It is especially suitable for high-pressure lubrication systems. At the same time, it eliminates the separate assembly process of the filter seat 3 and the oil cooler seat body 11, reduces fastening points, shortens assembly time, and reduces quality risks caused by production errors.

[0038] In some examples of this embodiment, such as Figures 3-6 As shown, the oil inlet 21, oil outlet 22, liquid inlet 23, and liquid outlet 24 are symmetrically arranged at four corners, respectively located at the upper right, lower left, lower right, and upper left corners of the bottom of the oil cooler core 2. This symmetrical layout allows the oil (oil inlet 21 → oil outlet 22) and coolant (liquid inlet 23 → liquid outlet 24) to form a "diagonal counter-flow" path within the oil cooler core 2. This improves the utilization rate of the heat exchange area, avoids heat exchange dead zones caused by uneven fluid distribution in local areas, ensures uniform temperature across all areas of the oil cooler core 2, and improves oil cooling efficiency.

[0039] In some examples of this embodiment, such as Figure 3 and 4As shown, the system also includes a mounting plate 5. First through holes 51 are provided on the mounting plate 5 at positions corresponding to the oil inlet 21, oil outlet 22, liquid inlet 23, and liquid outlet 24, allowing engine oil and coolant to flow through the first through holes 51 between the oil cooler base body 11 and the oil cooler core 2. The mounting plate 5 is shaped to match the oil cooler base body 11 and has several second through holes 52. Connectors pass through the second through holes 52 to fix the oil cooler core 2 to the oil cooler base body 11. The mounting plate 5 acts as an independent connecting medium, allowing for quick separation of the oil cooler core 2 from the oil cooler base body 11 by disassembling the connectors, eliminating the need to disassemble the entire cooling system and shortening the replacement or cleaning time for the oil cooler core 2.

[0040] In some examples of this embodiment, such as Figure 3 and 6 As shown, a first groove 115 is provided on the end face of the oil cooler seat body 11 that contacts the mounting plate 5. The first groove 115 is provided on the side wall surrounding the first oil inlet channel 111, the first oil outlet channel 112, the first liquid inlet channel 113 and the first liquid outlet channel 114. A sealing ring (not shown in the figure) is provided in the first groove 115.

[0041] In some examples of this embodiment, such as Figure 5 As shown, it also includes a bypass valve 6 and a pressure relief valve 7. The second oil inlet passage 132 is vertically arranged and extends away from the oil outlet 131. The bypass valve 6 is disposed in this extended passage. A third oil outlet passage 133 is vertically arranged in the filter seat 13. The upper end of the third oil outlet passage 133 communicates with the first oil outlet passage 112. The pressure relief valve 7 is disposed in the third oil outlet passage 133. When the bypass valve 6 is configured to open, the engine oil entering the second oil inlet passage 132 from the oil outlet 131 can partially enter the first oil outlet passage 111 through the bypass valve 6, and partially flow into the oil pan through the pressure relief valve 7. Specifically, when the pressure in the second oil inlet passage 132 is too high, the bypass valve 6 opens. When the second oil inlet 132 is blocked by the oil cooler core 2 or the viscosity of the low-temperature oil rises suddenly, causing excessive pressure, the bypass valve 6 opens to allow some oil to directly enter the first oil outlet 112, preventing the oil cooler core 2 from rupturing due to overpressure; at the same time, the pressure relief valve 7 opens when the pressure in the third oil outlet 133 is too high, guiding the excess oil back to the oil pan, preventing the filter 3 or pipeline from being damaged due to overpressure, forming "dual pressure protection".

[0042] Specifically, such as Figure 1 and 5As shown, the second oil inlet channel 132 extends away from the oil outlet 131 and penetrates the side wall of the oil cooler housing body 11, with a plug 8 provided at the penetration point. The second oil inlet channel 132 penetrates the side wall and is provided with a plug 8, which facilitates the cleaning of burrs or casting residues in the channel through the through hole during machining (avoiding the cleaning dead corners of traditional blind hole machining). At the same time, the plug 8 is removable, which facilitates the later inspection or replacement of the bypass valve 6 without disassembling the entire cooler housing, thus reducing maintenance costs.

[0043] In some examples of this embodiment, such as Figure 1 and 6 As shown, it also includes a small circulation interface 9, which is connected to the water pump base 12. A connecting pipe 10 is provided at the small circulation interface 9, and the two ends of the connecting pipe 10 are respectively connected to the small circulation interface 9 and the thermostat (not shown in the figure). The connecting pipe 10 is a flexible hose, and O-rings 101 are integrally formed on the outer rings of both ends. The flexible hose connection has excellent flexibility and deformation capability, which can absorb the vibration displacement between the engine and the oil cooler base 1 (such as axial / radial runout during engine operation), avoiding pipe stress breakage caused by rigid connection. The O-rings 101 are integrally formed on the outer rings of both ends of the hose. The integral O-rings 101 are made of the same material as the hose, eliminating the need for "separate assembly". Except for the risk of incorrect or missing installation, during assembly, the hose only needs to be inserted into the interface, and its own elasticity can compensate for interface processing errors.

[0044] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0045] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A multi-functional engine oil cooler characterized by: It includes an oil cooler housing and an oil cooler core; wherein the oil cooler core is configured to be vertically arranged, and the oil cooler core is provided with an oil inlet, an oil outlet, a liquid inlet, and a liquid outlet; The oil cooler base is connected to the bottom of the oil cooler core. The oil cooler base includes an integrally formed oil cooler base body and a water pump base. The oil cooler base body is provided with a first oil inlet channel, a first oil outlet channel, a first liquid inlet channel and a first liquid outlet channel that are connected to the oil inlet, the oil outlet, the liquid inlet and the liquid outlet, respectively. The water pump base is located on the right side of the oil cooler base body. The water pump base is provided with a second outlet channel that communicates with the first inlet channel, so that part of the coolant after being pressurized by the water pump can enter the oil cooling core from the second outlet channel through the first inlet channel, and the coolant circulating in the oil cooling core can eventually flow out from the first outlet channel.

2. The multifunctional engine oil cooler according to claim 1, characterized in that: It also includes a filter holder integrally formed with the oil cooler housing body. The filter holder is located at the lower left of the oil cooler housing body. The filter holder is provided with an oil inlet and a second oil inlet that are interconnected. The second oil inlet is connected to the first oil inlet so that the oil entering from the oil inlet can pass through the second oil inlet, the first oil inlet, and then enter the oil cooling core from the oil inlet. The oil circulating in the oil cooling core can flow out from the first oil outlet.

3. The multifunctional engine oil cooler according to claim 2, characterized in that: It also includes a filter end cap integrally formed with the oil cooler housing body. The filter end cap is located on the left side of the filter housing. The filter end cap is provided with a second oil outlet channel communicating with the first oil outlet channel, so that the oil flowing out through the first oil outlet channel can eventually flow into the filter from the second oil outlet channel.

4. The multifunctional engine oil cooler of claim 1, wherein: The oil inlet, oil outlet, liquid inlet, and liquid outlet are arranged symmetrically at four corners, and are respectively located at the upper right corner, lower left corner, lower right corner, and upper left corner of the bottom of the oil cooling core.

5. The multifunctional engine oil cooler of claim 1, wherein: It also includes a mounting plate, on which a first through hole is provided corresponding to the positions of the oil inlet, the oil outlet, the liquid inlet, and the liquid outlet, so that engine oil and coolant can flow through the first through hole between the oil cooler seat and the oil cooling core; the mounting plate is configured to match the shape of the oil cooler seat body, and a plurality of second through holes are provided on the mounting plate, and a connector is used to pass through the second through holes to fix the oil cooling core to the oil cooler seat body.

6. The multifunctional engine oil cooler according to claim 5, characterized in that: A first groove is provided on the end face of the oil cooler seat body that contacts the mounting plate. The first groove is provided on the side wall surrounding the first oil inlet, the first oil outlet, the first liquid inlet, and the first liquid outlet. A sealing ring is provided in the first groove.

7. The multifunctional engine oil cooler of claim 1, wherein: It also includes a bypass valve and a pressure relief valve. The second oil inlet is vertically arranged and extends away from the oil outlet. The bypass valve is located in the extended channel. A third oil outlet is vertically arranged in the filter housing. The upper end of the third oil outlet is connected to the first oil outlet. The pressure relief valve is located in the third oil outlet. When the bypass valve is configured to open, the engine oil entering the second oil inlet from the oil outlet can partially enter the first oil outlet through the bypass valve and partially flow into the oil pan from the pressure relief valve.

8. The multifunctional engine oil cooler of claim 7, wherein: The second oil inlet extends away from the oil outlet and penetrates the side wall of the oil cooler housing, with a plug provided at the penetration point.

9. The multifunctional engine oil cooler of claim 1, wherein: It also includes a small circulation interface, which is connected to the water pump base. A connecting pipe is provided at the small circulation interface, and the two ends of the connecting pipe are respectively connected to the small circulation interface and the thermostat. The connecting pipe is a flexible hose, and O-rings are integrally provided on the outer rings of both ends.

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