Testing device and method for oil cooler assembly

Abstract

The invention provides a test device and method for an oil cooler assembly, the test device for the oil cooler assembly comprises an environment box, and an inner cavity of the environment box forms an accommodating cavity for placing the oil cooler assembly; the loader is used for loading the oil cooler assembly so as to simulate the working state of the oil cooler assembly; the test device for the oil cooler assembly comprises a loading device, an environment box and a control and recorder, the loading device is connected with the environment box, the control and recorder is connected with the loading device and used for controlling and recording loading of the loading device, and the control and recorder is connected with the environment box and used for controlling and recording the temperature of the environment box. The actual working state of the oil cooler assembly is truly simulated, the potential failure problem can be found in time, and the test scientificity and reliability are improved.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, specifically relating to a test apparatus and method for an oil cooler assembly. Background Technology

[0002] In recent years, the new energy vehicle industry has experienced explosive growth. Market demands for vehicle energy efficiency, range, and usability have continued to upgrade, driving the research and development and popularization of new energy vehicles with various power forms. Among them, plug-in hybrid electric vehicles (PHEVs), with their dual advantages of being able to operate on both gasoline and electric power, have solved the range anxiety of pure electric vehicles and have better energy efficiency than traditional gasoline vehicles. They have become one of the most widely accepted new energy vehicle models in the current market, and their market penetration rate is constantly increasing.

[0003] The core competitiveness of plug-in hybrid electric vehicles (PHEVs) stems from their hybrid power system, and the hybrid transmission, as a key component of this system, performs the dual functions of driving the vehicle and converting energy into electricity. During the complex operating cycle of a PHEV, the hybrid transmission continuously generates a significant amount of heat. If this heat cannot be dissipated in time, it will severely impact the transmission's efficiency and lifespan, and may even lead to system failure. Currently, the widely adopted cooling solution in the industry is to lead the transmission coolant to an oil cooler assembly in the front-end cooling module. Cooling is achieved through heat exchange between the coolant and the outside air, ensuring that the hybrid transmission remains at a suitable operating temperature. Therefore, the reliability of the oil cooler assembly directly affects the safe operation of the entire vehicle.

[0004] However, in actual use, the oil cooler assemblies of many models frequently experience leakage failures, causing great inconvenience to users and hindering the improvement of the market reputation of PHEV models.

[0005] Existing reliability tests for oil cooler assemblies are mostly conducted at room temperature, simulating operating conditions but failing to fully consider the impact of environmental factors, such as low temperatures, on the material properties of the oil cooler assembly and the connecting oil pipes. This testing method differs significantly from the actual operating conditions of the oil cooler assembly, making it difficult for test results to accurately reflect its reliability level in real-world use. This means potential failures at low temperatures cannot be detected in time during the R&D phase, ultimately leading to malfunctions in the market. Therefore, there is an urgent need for a testing device for oil cooler assemblies that can simulate actual operating conditions, providing more scientific and accurate technical support for its reliability testing. Summary of the Invention

[0006] To address some or all of the aforementioned technical problems in the prior art, this invention proposes a testing apparatus and method for oil cooler assemblies. This testing apparatus for oil cooler assemblies can precisely control the low-temperature environment and loading conditions, realistically simulating the actual working state of the oil cooler assembly, enabling timely detection of potential failures, and improving the scientific rigor and reliability of the testing.

[0007] According to a first aspect of the present invention, a test apparatus for an oil cooler assembly is provided, comprising:

[0008] An environmental chamber, the inner cavity of which forms a receiving cavity for housing the oil cooler assembly. A loader, used to load the oil cooler assembly to simulate the operating state of the oil cooler assembly, A controller and recorder, connected to the loader for controlling and recording the loading of the loader, and connected to the environmental chamber for controlling and recording the temperature of the environmental chamber.

[0009] In one embodiment, a fixing fixture is provided inside the environmental chamber, the fixing fixture including a support for fixing to the bottom wall of the environmental chamber and a mounting plate fixedly connected to the support for fixing the oil cooler assembly.

[0010] In one embodiment, the mounting plate is provided with connection holes.

[0011] In one embodiment, the loader has an extension arm with its free end passing through the side wall of the environmental chamber, and the extension arm is kinematically sealed to the environmental chamber.

[0012] In one embodiment, an oil pipe interface fixture is provided at the free end of the extended arm, and the oil pipe interface fixture is provided with an interface, which is connected to the oil interface of the oil cooler assembly through an oil pipe.

[0013] According to a second aspect of the present invention, a test method for an oil cooler assembly is provided, comprising: Step one: Debug the test device used for the oil cooler assembly. Step two: Install the oil cooler assembly and oil pipes into the receiving cavity of the environmental chamber. Step 3: The temperature inside the receiving cavity is controlled and set to reach a preset temperature using the controller and recorder. Step four: The loader is started via the controller and recorder to load the oil pipes and subsequently the oil cooler assembly. Step 5: Inspect the oil cooler assembly to determine if there is a problem with it. Step six: If there is no problem with the oil cooler assembly in step five, repeat steps two through five until a problem with the oil cooler assembly is found or the limit number of cycles is reached.

[0014] In one embodiment, in step three, the temperature inside the receiving cavity is controlled and set to a preset temperature by the controller and recorder, and step four is executed after the temperature inside the receiving cavity reaches the preset temperature and a preset time range.

[0015] In one embodiment, the preset temperature is between -50 and -10 degrees Celsius, and the preset time range is between half an hour and one and a half hours.

[0016] In one embodiment, in step four, the loader loads the oil pipe interface fixture connected to the oil cooler assembly at a preset frequency and a preset displacement. After running for a period of time, it runs again after a period of time interval, in order to repeatedly load the oil cooler assembly.

[0017] In one embodiment, in step six, if the number of times the oil cooler assembly is found to have a problem has not reached the limit, step seven is performed to provide optimization suggestions. The optimization suggestions include one or more of the following: the material of the oil pipe, the direction of the oil pipe, the strength of the oil cooler assembly, the wall thickness of the pipe joint of the oil cooler assembly, and the size of the pipe joint of the oil cooler assembly.

[0018] Compared with existing technologies, the advantages of this invention are as follows: This test apparatus, through the coordinated design of the environmental chamber, loader, and controller and recorder, forms a comprehensive technical advantage from component function to system synergy, significantly improving the authenticity and scientific rigor of oil cooler assembly reliability testing. The environmental chamber provides a controllable simulated environment for the oil cooler assembly, accurately reproducing the low-temperature operating conditions of the oil cooler assembly. This overcomes the shortcomings of traditional room-temperature tests that neglect the impact of low temperatures on material properties. By simulating extreme temperature environments, it effectively stimulates the potential cracking risk at the pipe interfaces and weld roots of the oil cooler assembly due to increased material brittleness. The loader can apply loads corresponding to specific operating conditions, realistically replicating the stress state of the oil cooler assembly during vehicle operation, ensuring that the stress on the components matches the actual working scenario. The controller and recorder, as the core control and recording unit, on the one hand, achieves precise control and real-time recording of the environmental chamber temperature, ensuring the stability and traceability of the low-temperature environment simulation; on the other hand, it precisely controls and collects data on the loading parameters of the loader, ensuring the accuracy and continuity of load application. The test apparatus achieves accurate simulation of low-temperature environment, making the test process closely match the actual working principle of the oil cooler assembly. The test results can better reflect the true reliability level, providing scientific and effective technical support for timely detection of potential failure problems and optimization of product structure design. Attached Figure Description

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which: Figure 1 A test apparatus for an oil cooler assembly according to an embodiment of the present invention is shown; Figure 2 This illustrates the connection structure between an oil cooler assembly and a hybrid transmission in the prior art; Figure 3 This shows an oil cooler assembly in the prior art.

[0020] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0021] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0022] In the description of this invention, it should be noted that the directional terms "front," "rear," "left," "right," "up," and "down," etc., are all used with reference to the accompanying drawings. Additionally, the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] In the description of this invention, the terms "first," "second," etc., used in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figure 2 and 3As shown, the vehicle's oil cooling system includes an oil cooler assembly 1, oil hoses (including inlet and outlet hoses) 2, and a hybrid transmission 3. The transmission fluid in the hybrid transmission 3 is pressurized by an internal oil pump and flows into the oil cooler assembly 1 through the oil hose 2. In the oil cooler assembly 1, it exchanges heat with external cooling air to lower the transmission fluid temperature. The fluid then flows back to the hybrid transmission 3 through the hose 2, creating a continuous cycle to cool the hybrid transmission 3. In the vehicle system, the oil cooler assembly 1 is fixed to the body or radiator. The hybrid transmission 3, together with the engine, forms the powertrain system and is fixed to the vehicle's longitudinal beams via suspension pads. During vehicle operation, acceleration, or braking, the hybrid transmission 3 experiences vibration and displacement. The oil hoses (including inlet and outlet hoses) 2 connect the oil cooler assembly 1 and the hybrid transmission 3, serving to transfer transmission fluid and attenuate the vibrations and tension transmitted from the hybrid transmission 3 to the oil cooler assembly 1. In low-temperature environments (e.g., minus 50 to minus 10 degrees Celsius), the hardness of the oil hoses (including inlet and outlet hoses) 2 connecting the oil cooler assembly 1 and the hybrid transmission 3 will increase. This will prevent the effective buffering and attenuation of vibrations and tensions transmitted from the hybrid transmission 3 to the oil cooler assembly 1, which will be directly transmitted to the oil cooler assembly 3. Especially during vehicle acceleration or braking, this force will be repeatedly applied, causing the oil interface 11 of the oil cooler assembly 1 to crack and leak, ultimately rendering the entire vehicle unable to move.

[0026] According to the present invention, a test apparatus for an oil cooler assembly is provided. For example... Figure 1 As shown, the test apparatus for the oil cooler assembly includes an environmental chamber 110, a loader 120, and a controller and recorder 130. The interior of the environmental chamber 110 forms a receiving cavity 111 for housing the oil cooler assembly 1, simulating the low-temperature environment of vehicle operation. The environmental chamber 110 is a high-low temperature test chamber with a volume of 10 m³, and a temperature range of -50 to 120 degrees Celsius, used to simulate the low-temperature environment of the entire vehicle (e.g., -30 or -40 degrees Celsius). The loader 120 is used to load the oil cooler assembly 1 to simulate its actual operating state. The loader 120 can be a hydraulic or mechanical displacement actuator. The loader 120 is used to simulate the vibration displacement generated by the hybrid transmission 3 during vehicle acceleration, braking, etc. The controller and recorder 130 is connected to the loader 120 to control and record the loading of the loader 120. The controller and recorder 130 is also connected to the environmental chamber 110 to control and record the temperature of the environmental chamber 110. The controller and recorder 130 is used to load test conditions, control the operation of the loader 120 and the environmental chamber 110, and record various parameters in the test in real time.

[0027] With the help of Figure 1The environmental chamber 110, loader 120, and controller / recorder 130 work together to create a test environment that closely resembles the actual operation of the oil cooler assembly 1. The oil cooler assembly 1 can be placed within the containment cavity 111 of the environmental chamber 110. The controller / recorder 130 precisely regulates the temperature of the environmental chamber 110 according to the temperature changes required in actual usage scenarios, covering key environmental conditions such as low temperatures and recording temperature data in real time. Simultaneously, the controller / recorder 130 sends control commands to the loader 120, which applies loads to the oil cooler assembly 1 simulating its actual operation, replicating the pressure conditions experienced by the oil cooler assembly 1 during vehicle operation, thus achieving synchronous simulation of temperature environment and working load. During this process, the controller / recorder 130 continuously records the loading parameters of the loader 120 and the temperature parameters of the environmental chamber 110, providing complete data support for the reliability analysis of the oil cooler assembly 1.

[0028] It can be seen that, through Figure 1 The ambient environment chamber 110 accurately simulates complex environments such as low temperatures, overcoming the shortcomings of existing room-temperature tests that ignore environmental influences. It fully exposes potential failures of the oil cooler assembly 1 due to changes in the material properties of oil pipes 2 and other components at low temperatures, significantly improving the consistency between test results and actual operating conditions. The coordinated control of the loader 120 and the ambient environment chamber 110 accurately reproduces the actual working state of the oil cooler assembly 1, ensuring the scientific rigor and accuracy of the test. The controller and recorder 130's real-time recording and precise control of temperature and loading parameters not only provides comprehensive data support for reliability analysis but also helps R&D personnel promptly identify potential failures under special environments such as low temperatures. This mitigates the risk of market-end failures from the outset, improves the operational reliability of the oil cooler assembly 1, and ultimately ensures the safe operation of the PHEV vehicle. Simultaneously, it optimizes the product's market reputation, providing technical support for increasing the market penetration rate of PHEV models.

[0029] In one embodiment, a fixing fixture 140 is provided inside the environmental chamber 110. The fixing fixture 140 includes a support base 141 and a mounting plate 142. The support base 141 is fixed to the bottom wall of the environmental chamber 110, mainly serving as a basic support. The mounting plate 142 is fixedly connected to the support base 141 and is used to fix the oil cooler assembly 1. Preferably, the mounting plate 142 is provided with connection holes (not shown in the figure). The position and number of these connection holes can match the position and number of mounting brackets 12 on the oil cooler assembly 1. During operation, the mounting brackets 12 can be fixed to the connection holes using bolts, thereby realizing the quick installation and removal of the oil cooler assembly 1 on the fixing fixture 140. It is easy to understand that the setting of this fixing fixture 140 is mainly to simulate the actual installation conditions of the oil cooler assembly 1 and simulate actual working conditions.

[0030] Therefore, by fixing the support base 141 to the bottom wall of the environmental chamber 110 and matching the mounting plate 142 with the mounting bracket 12 of the oil cooler assembly 1, quick assembly and disassembly are achieved with the help of matching connection holes and bolts, greatly improving the convenience of testing. It accurately simulates the actual installation position of the oil cooler assembly 1, making the test conditions highly consistent with the vehicle assembly conditions. Combined with the temperature control of the environmental chamber 110 and the load application of the loader 120, the accuracy of the test is further guaranteed, helping to more realistically expose potential failure problems.

[0031] The loader 120 has an extension arm 121. The free end of the extension arm 121 passes through the side wall of the environmental chamber 110. The extension arm 121 is kinematically sealed to the environmental chamber 110. This configuration ensures accurate load transfer to simulate actual working conditions while preventing temperature leakage within the environmental chamber 110, ensuring stability in low-temperature and other testing environments, and improving the reliability and accuracy of the test.

[0032] An oil pipe interface fixture 150 is provided at the free end of the extended arm 121. An interface 151 is provided on the oil pipe interface fixture 150. The interface 151 is connected to the oil interface 12 of the oil cooler assembly 1 via the oil pipe 2. This design of the oil pipe interface fixture 150 and the oil pipe 2 can accurately simulate the tensile effect of the oil pipe 2 hardening under low-temperature conditions. Both the oil pipe 2 and the oil cooler assembly 1 are based on a full-vehicle prototype, and the relative positions of the oil cooler assembly 1 and the oil hoses (including the inlet and outlet hoses) 2 must be consistent with the positional state of the full vehicle. When the environmental chamber 110 is adjusted to a low-temperature condition, the oil pipe 2 hardens and contracts due to its material properties, generating a tensile force. Through the stable connection between the interface 151 and the oil interface 12 of the oil cooler assembly 1, this tensile load is accurately transferred to the oil cooler assembly 1, reproducing the complex working condition of the oil pipe hardening and tensile force caused by low temperatures in actual use. This design fully exposes the potential failure risk of oil cooler assembly 1 under the combined effects of tension, low temperature, and working load, further improving the fit between the test and actual working conditions, making the test results more comprehensive and accurate, and providing a more practical technical basis for the structural optimization and reliability improvement of oil cooler assembly 1.

[0033] The following is based on Figures 1 to 3 The method of conducting tests using a test apparatus for oil cooler assemblies is described in detail.

[0034] Step one requires debugging the test equipment used for the oil cooler assembly. Specifically, ensure that the loader 120 and the controller and recorder 130 are working properly. Ensure that the oil pipe interface fixture 150 is in the cold start position, which is designed as the zero point position.

[0035] Step two: Install the oil cooler assembly 1 and oil pipe 2 into the receiving cavity 111 of the environmental chamber 110. That is, install the oil cooler assembly 1 to be tested into place. Specifically, in the receiving cavity 111, one end of the oil pipe 2 is connected to the oil pipe interface fixture 150, and the other end is connected to the oil cooler assembly 1. Install the oil cooler assembly 1 onto the fixing fixture 140. Afterwards, ensure the environmental chamber 110 is sealed.

[0036] Step three: The temperature inside the receiving cavity 111 is controlled and set to reach a preset temperature via the controller and recorder 130. For example, the temperature inside the receiving cavity 111 can be controlled to be between -50 and -10 degrees Celsius, but this value is not limited to the above range. That is to say, the preset temperature can be adjusted according to different simulated operating conditions. After the temperature inside the receiving cavity 111 reaches the preset temperature, it is necessary to run for a preset time range, from half an hour to one and a half hours, for example, one hour. The setting of this preset time range mainly ensures that the oil cooler assembly 1 and oil pipe 2, etc., inside the receiving cavity 111 have been stably maintained at this temperature.

[0037] Step four: The loader 120 is started by controlling the controller and recorder 130 to load the oil pipe 2 and subsequently the oil cooler assembly 1. Specifically, loading can be performed by repeated linear loading at a frequency of 10Hz and a displacement of ±8mm, causing the extension arm 121 to move repeatedly in a linear motion, which in turn drives the oil pipe interface fixture 150 to repeatedly pull the oil pipe 2, thereby pulling the oil cooler assembly 1. After the loader 120 loads for a period of time, for example 10 seconds, the loader 120 stops loading and returns to the zero position. After waiting for another period of time, for example 50 seconds, loading resumes, and the waiting period continues. This process is repeated a predetermined number of times, for example 200 times.

[0038] Step 5: Inspect oil cooler assembly 1 to determine if there are any problems. Specifically, after the predetermined number of load cycles have been completed and antifreeze protection measures have been taken, open the environmental chamber 110 and inspect oil cooler assembly 1 for cracks or deformations that may affect its use. Record the test results.

[0039] Step Six: If the oil cooler assembly in Step Five is problem-free, repeat Steps Two through Five until a problem is found in oil cooler assembly 1 or the maximum number of tests is reached. In other words, if oil cooler assembly 1 is faulty, it will not proceed to the next stage of testing. If oil cooler assembly 1 is problem-free, first count the number of load tests performed. If the maximum number of tests has not been reached, then repeat Steps Two through Five to continue the load test. This maximum number of tests can be eight. After five load tests, it can be determined that oil cooler assembly 1 can operate normally in a low-temperature environment and meet the specified service life requirements. Continuing the load test is mainly to further assess the performance of oil cooler assembly 1 and provide parameter basis for design. Of course, even if the oil cooler assembly still does not show any problems after the maximum number of tests, the cycle can continue until the oil cooler assembly develops cracks or deformations that affect its use, at which point the test is stopped, and the final number of tests is recorded. This data also provides a reference for the design of the oil cooler assembly.

[0040] In step six, if the number of times the oil cooler assembly malfunctions has not reached the limit (e.g., less than five times), the oil cooler assembly is considered faulty. Step seven is then required to provide optimization suggestions. These suggestions include adjusting the material and routing of the oil pipes, reducing hardness at low temperatures (requiring a comprehensive assessment of the burst pressure resistance of the oil hoses), adding S-bends to the oil hoses to increase effective buffer capacity, and improving the strength of the oil cooler assembly, the wall thickness of the pipe fittings, and other aspects of the assembly.

[0041] As can be seen, this application utilizes a standardized process of zero-point calibration, precise temperature control, and cyclic loading to reproduce the real-world operating conditions of the oil cooler assembly under low-temperature environments, specifically the hardening and tensioning of the oil tubing. Preset temperature and holding time settings ensure that the oil cooler assembly and oil tubing are fully adapted to the low-temperature environment. Precise control of loading parameters and cyclic modes simulates dynamic tensile stress in actual use. Multiple rounds of cyclic testing and phased evaluation criteria can quickly identify products that meet service life requirements and provide optimization suggestions for oil tubing material, routing, and oil cooler structure through failure analysis. This significantly enhances the guiding value of test data for product development, addressing the low-temperature leakage problem of the oil cooler assembly at its source.

[0042] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the invention, and all changes and / or modifications made according to embodiments of the invention should be covered within the protection scope of the invention.

Claims

1. A testing apparatus for an oil cooler assembly, characterized in that, include: An environmental chamber, the inner cavity of which forms a receiving cavity for housing the oil cooler assembly. A loader, used to load the oil cooler assembly to simulate the operating state of the oil cooler assembly, A controller and recorder, connected to the loader for controlling and recording the loading of the loader, and connected to the environmental chamber for controlling and recording the temperature of the environmental chamber.

2. The test apparatus for an oil cooler assembly according to claim 1, characterized in that, A fixing fixture is provided inside the environmental chamber. The fixing fixture includes a support base for fixing to the bottom wall of the environmental chamber and a mounting plate for fixing the oil cooler assembly, which is fixedly connected to the support base.

3. The test apparatus for an oil cooler assembly according to claim 2, characterized in that, The mounting plate is provided with connection holes.

4. The test apparatus for an oil cooler assembly according to any one of claims 1 to 3, characterized in that, The loader has an extension arm, the free end of which passes through the side wall of the environmental chamber, and the extension arm is kinematically sealed to the environmental chamber.

5. The test apparatus for an oil cooler assembly according to claim 4, characterized in that, An oil pipe interface fixture is provided at the free end of the extended arm. The oil pipe interface fixture is provided with an interface, which is connected to the oil interface of the oil cooler assembly through an oil pipe.

6. A test method for an oil cooler assembly, utilizing the test apparatus for an oil cooler assembly according to any one of claims 1 to 5, characterized in that, include: Step one: Debug the test device used for the oil cooler assembly. Step two: Install the oil cooler assembly and oil pipes into the receiving cavity of the environmental chamber. Step 3: The temperature inside the receiving cavity is controlled and set to a preset temperature using the controller and recorder. Step four: The loader is activated via the controller and recorder to load the oil pipes and subsequently the oil cooler assembly. Step 5: Inspect the oil cooler assembly to determine if there is a problem with it. Step six: If there is no problem with the oil cooler assembly in step five, repeat steps two through five until a problem with the oil cooler assembly is found or the limit number of cycles is reached.

7. The test method for an oil cooler assembly according to claim 6, characterized in that, In step three, the temperature inside the receiving cavity is controlled and set to a preset temperature by the controller and recorder. After the temperature inside the receiving cavity reaches the preset temperature and a preset time range, step four is executed.

8. The test method for an oil cooler assembly according to claim 7, characterized in that, The preset temperature is between -50 and -10 degrees Celsius, and the preset time range is between half an hour and one and a half hours.

9. The test method for an oil cooler assembly according to any one of claims 6 to 8, characterized in that, In step four, the loader loads the oil pipe interface fixture connected to the oil cooler assembly at a preset frequency and a preset displacement. After running for a period of time, it runs again after a period of time, in order to repeatedly load the oil cooler assembly.

10. The test method for an oil cooler assembly according to any one of claims 6 to 8, characterized in that, In step six, if the number of times the oil cooler assembly is found to have a problem has not reached the limit, proceed to step seven and provide optimization suggestions. The optimization suggestions include one or more of the following: the material of the oil pipe, the direction of the oil pipe, the strength of the oil cooler assembly, the wall thickness of the pipe joints of the oil cooler assembly, and the size of the pipe joints of the oil cooler assembly.

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