Oil temperature control method, device, and vehicle

Abstract

This application discloses an oil temperature control method, device, and vehicle. The method comprises: determining a third temperature parameter based on a first temperature parameter and a second temperature parameter; obtaining a target path from a path corresponding to at least one cooler based on the third temperature parameter; and cooling the oil in the target path based on a cooling method corresponding to the target path to keep the fourth temperature parameter within a target range. Based on the cooling effect of the at least one cooler and incorporating the third temperature parameter as a reference, the method effectively controls the oil temperature in the engine's main oil gallery, ensuring that the oil temperature does not become excessively high.

Description

Technical Field

[0001] The present application relates to the field of engines, and in particular to an oil temperature control method, device, and vehicle. Background Art

[0002] Engine oil, known as the lifeblood of the engine, lubricates, cleans, cools, seals, reduces friction, and prevents rust and corrosion. During engine operation, when the oil temperature is high, the viscosity is too low, making it difficult to form a sufficiently thick oil film on the friction surfaces. Furthermore, the oil film has poor load-bearing capacity and is easily damaged under load, preventing proper lubrication of components and causing excessive wear. Furthermore, if the oil viscosity is too low, it can cause poor piston ring sealing, resulting in blowby and oil burning in the combustion chamber, reduced engine power, and potentially malfunctions. Therefore, maintaining the oil temperature within a certain range during engine operation to prevent excessively high oil temperatures and low viscosity, which can cause component wear, is crucial for fully maximizing engine performance, extending engine life, and reducing engine consumption.

[0003] Currently, engines commonly use oil coolers (referred to as coolers) to cool the engine oil. These coolers are placed in a cooling medium (e.g., water) circuit. The cooling medium flows outside the tube while the oil flows inside, or vice versa. The oil and cooling medium exchange heat, regulating the oil temperature. However, as the engine operates for extended periods, the cooling medium's temperature rises, gradually reducing the cooling effect until it becomes ineffective. This results in excessively high oil temperatures, impacting engine operation. Summary of the Invention

[0004] The present application provides an oil temperature control method, device, and vehicle, the purpose of which is to ensure that the oil temperature is maintained within a target range and to avoid excessive oil temperature.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A method for controlling engine oil temperature, comprising:

[0007] Determining a third temperature parameter based on a first temperature parameter and a second temperature parameter; the first temperature parameter is used to represent the temperature of the engine oil not cooled by the cooler; the second temperature parameter is used to represent the temperature of the specified cooling medium;

[0008] Obtaining a target path from paths corresponding to at least one cooler based on the third temperature parameter; the path being used to represent a passage through which engine oil flows into a main oil gallery of the engine; the cooler being used to cool the engine oil in the path based on a cooling method corresponding to its own cooling medium;

[0009] Based on the cooling method corresponding to the target path, the oil in the target path is cooled so that a fourth temperature parameter is within a target range; the fourth temperature parameter is used to characterize the oil temperature in the main oil gallery of the engine.

[0010] Optionally, determining a third temperature parameter based on the first temperature parameter and the second temperature parameter includes:

[0011] Pre-acquiring a second temperature parameter;

[0012] In a case where the second temperature parameter is less than a fourth temperature threshold, a third temperature parameter is determined based on a difference between the first temperature parameter and the second temperature parameter.

[0013] Optionally, the at least one cooler includes a first cooler and a second cooler; the first cooler uses the designated cooling medium as its own cooling medium; and the cooling medium of the second cooler is different from the designated cooling medium.

[0014] Optionally, obtaining a target path from paths corresponding to at least one cooler according to the third temperature parameter includes:

[0015] If the third temperature parameter is greater than the first temperature threshold, the path corresponding to the first cooler is selected as the target path.

[0016] Optionally, obtaining a target path from paths corresponding to at least one cooler according to the third temperature parameter includes:

[0017] If the third temperature parameter is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, the path corresponding to the first cooler and the path corresponding to the second cooler are selected as target paths.

[0018] Optionally, obtaining a target path from paths corresponding to at least one cooler according to the third temperature parameter includes:

[0019] If the third temperature parameter is less than the second temperature threshold and greater than or equal to the third temperature threshold, the path corresponding to the second cooler is selected as the target path.

[0020] Optionally, obtaining a target path from paths corresponding to at least one cooler according to the third temperature parameter includes:

[0021] If the third temperature parameter is less than a third temperature threshold, the path corresponding to the first cooler is selected as the target path.

[0022] Optionally, after pre-acquiring the second temperature parameter, the method further includes:

[0023] When the second temperature parameter is not less than the fourth temperature threshold, a path corresponding to the second cooler is used as the target path.

[0024] Optionally, cooling the engine oil in the target path based on the cooling method corresponding to the target path so that the fourth temperature parameter is within a target range includes:

[0025] Controlling valves corresponding to paths other than the target path to be in a closed state;

[0026] The valve corresponding to the target path is controlled to be in an open state so that the oil flows into the engine main oil channel through the target path, and the oil in the target path is cooled using the cooling method corresponding to the target path so that the fourth temperature parameter is within the target range.

[0027] An oil temperature control device, comprising:

[0028] a temperature difference determination unit, configured to determine a third temperature parameter based on a first temperature parameter and a second temperature parameter; the first temperature parameter being used to characterize the temperature of the engine oil not cooled by the cooler; and the second temperature parameter being used to characterize the temperature of a designated cooling medium;

[0029] a path determination unit, configured to obtain a target path from paths corresponding to at least one cooler based on the third temperature parameter; the path being configured to represent a passage through which engine oil flows into a main oil gallery of the engine; the cooler being configured to cool the engine oil in the path based on a cooling method corresponding to its own cooling medium;

[0030] An oil temperature control unit is used to cool the oil in the target path based on the cooling method corresponding to the target path so that a fourth temperature parameter is within a target range; the fourth temperature parameter is used to characterize the oil temperature in the main oil channel of the engine.

[0031] Optionally, the temperature difference determination unit is specifically configured to: pre-acquire a second temperature parameter; and determine a third temperature parameter based on a difference between the first temperature parameter and the second temperature parameter when the second temperature parameter is less than a fourth temperature threshold.

[0032] Optionally, the at least one cooler includes a first cooler and a second cooler; the first cooler uses the designated cooling medium as its own cooling medium; and the cooling medium of the second cooler is different from the designated cooling medium.

[0033] Optionally, the path determination unit is specifically configured to: if the third temperature parameter is greater than a first temperature threshold, select the path corresponding to the first cooler as the target path.

[0034] Optionally, the path determination unit is specifically used to: if the third temperature parameter is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, select the path corresponding to the first cooler and the path corresponding to the second cooler as the target path.

[0035] Optionally, the path determination unit is specifically configured to: if the third temperature parameter is less than the second temperature threshold and greater than or equal to the third temperature threshold, select the path corresponding to the second cooler as the target path.

[0036] Optionally, the path determination unit is specifically configured to: if the third temperature parameter is less than a third temperature threshold, select the path corresponding to the first cooler as the target path.

[0037] Optionally, the path determination unit is further configured to: when the second temperature parameter is not less than the fourth temperature threshold, use a path corresponding to the second cooler as the target path.

[0038] Optionally, the oil temperature control unit is specifically used to: control the valves corresponding to paths other than the target path to be in a closed state; control the valves corresponding to the target path to be in an open state so that the engine oil flows into the engine main oil channel through the target path, and use the cooling method corresponding to the target path to cool the engine oil in the target path so that the fourth temperature parameter is within the target range.

[0039] A vehicle comprises: a processor, a memory, and a bus; the processor and the memory are connected via the bus;

[0040] The memory is used to store a program, and the processor is used to run the program, wherein the program is executed by the processor to execute the oil temperature control method.

[0041] The technical solution provided by the present application determines a third temperature parameter based on a first temperature parameter and a second temperature parameter. According to the third temperature parameter, a target path is obtained from the path corresponding to at least one cooler. Based on the cooling method corresponding to the target path, the engine oil in the target path is cooled so that the fourth temperature parameter is within the target range. The present application is based on the cooling effect of at least one cooler and combines the third temperature parameter as a reference basis to achieve effective control of the engine oil temperature in the main oil channel of the engine to ensure that the engine oil temperature is not too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A flow chart of an oil temperature control method provided in an embodiment of the present application;

[0044] Figure 2 A flow chart of another oil temperature control method provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of the architecture of an oil temperature control system provided in an embodiment of the present application;

[0046] Figure 4 A flow chart of another oil temperature control method provided in an embodiment of the present application;

[0047] Figure 5 A flow chart of another oil temperature control method provided in an embodiment of the present application;

[0048] Figure 6 A schematic diagram of the architecture of an oil temperature control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] like Figure 1 As shown, it is a flow chart of an oil temperature control method provided in an embodiment of the present application, which includes the following steps.

[0051] S101: Determine a third temperature parameter based on the first temperature parameter and the second temperature parameter.

[0052] The first temperature parameter represents the temperature of the engine oil not cooled by the cooler, and the second temperature parameter represents the temperature of the designated cooling medium. Generally speaking, the engine oil not cooled by the cooler is the oil that has not yet entered the corresponding path of the cooler, and the designated cooling medium is usually the coolant used in a water-cooled cooler.

[0053] It should be noted that the first temperature parameter can be specifically collected based on a temperature sensor preset in a channel before the path corresponding to the cooler, and the second temperature parameter can be specifically collected based on a temperature sensor preset on the water-cooled cooler.

[0054] In the embodiment of the present application, the specific implementation process of determining the third temperature parameter based on the first temperature parameter and the second temperature parameter is: based on the difference between the first temperature parameter and the second temperature parameter as the third temperature parameter.

[0055] In addition, when the temperature of the cooling medium in the first cooler is greater than or equal to the fourth temperature threshold, the cooling effect of the first cooler will be invalid and the oil temperature cannot be reduced. Therefore, it is necessary to analyze whether to use the first cooler to cool the oil based on the second temperature parameter. For the specific analysis process, please refer to Figure 2 The method shown.

[0056] S102: Acquire a target path from paths corresponding to at least one cooler according to a third temperature parameter.

[0057] The path is used to represent the channel through which the engine oil flows into the main oil channel of the engine, and the cooler is used to cool the engine oil in the path according to the cooling method corresponding to its own cooling medium.

[0058] Optionally, the at least one cooler includes a first cooler and a second cooler; the first cooler uses a designated cooling medium as its own cooling medium; and the cooling medium of the second cooler is different from the designated cooling medium.

[0059] The first cooler shown in the embodiment of the present application can be a water-cooled cooler, i.e., a liquid-to-liquid heat exchanger, with the heat mass being engine oil and the cooling medium being coolant. Specifically, the coolant can be cooling water. During normal engine operation, the coolant temperature is typically within the range of 80-100°C, and the engine oil temperature in the engine main oil gallery is typically within the range of 90-125°C. Water-cooled coolers typically use coolant to cool the engine oil. A higher coolant flow rate improves the cooling effect, typically reducing the engine oil temperature by 10°C.

[0060] The second cooler shown in the embodiment of the present application can be an air-cooled cooler, i.e., an air-to-liquid heat exchanger, with the heat mass being engine oil and the cooling medium being air. In vehicles, the second cooler is typically located at the front of the vehicle body, utilizing headwind or a cooling fan to cool the engine oil during driving. A greater cooling air volume results in better cooling performance.

[0061] In an embodiment of the present application, the vehicle includes at least one cooler, and different coolers are arranged in different paths. That is, there are multiple channels for the engine oil to flow into the main oil channel of the engine. The oil in the path will be cooled based on the cooler corresponding to the path and then flow into the main oil channel of the engine. Finally, the main oil channel of the engine will divert the oil to various places that need lubrication.

[0062] Optionally, if the third temperature parameter is greater than the first temperature threshold, the path corresponding to the first cooler is selected as the target path.

[0063] Optionally, if the third temperature parameter is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, the path corresponding to the first cooler and the path corresponding to the second cooler are selected as the target path.

[0064] Optionally, if the third temperature parameter is less than the second temperature threshold and greater than or equal to the third temperature threshold, the path corresponding to the second cooler is selected as the target path.

[0065] Optionally, if the third temperature parameter is less than a third temperature threshold, the path corresponding to the first cooler is selected as the target path.

[0066] In addition, when the temperature of the cooling medium in the first cooler is greater than or equal to the fourth temperature threshold, the cooling effect of the first cooler will be invalid and the oil temperature cannot be reduced. Therefore, it is necessary to analyze whether to use the first cooler to cool the oil based on the second temperature parameter. For the specific analysis process, please refer to Figure 2 The method shown.

[0067] S103: Cooling the engine oil in the target path based on the cooling method corresponding to the target path, so that the fourth temperature parameter is within the target range.

[0068] The fourth temperature parameter is used to characterize the oil temperature in the main oil gallery of the engine.

[0069] It should be noted that the correspondence between the path and the cooler is essentially that the cooler is arranged on the path, and the use of the path is controlled by the valve corresponding to the cooler. When the valve is in the closed state, the path cannot be used (that is, the engine oil cannot flow into the main oil channel of the engine through the path). When the valve is in the open state, the path is allowed to be used (that is, the engine oil can flow into the main oil channel of the engine through the path).

[0070] Optionally, based on the cooling method corresponding to the target path, the engine oil in the target path is cooled so that the fourth temperature parameter is within the target range. The specific implementation process includes: controlling the valves corresponding to the paths other than the target path to be in a closed state; controlling the valves corresponding to the target path to be in an open state so that the engine oil flows into the main oil channel of the engine via the target path, and using the cooling method corresponding to the target path to cool the engine oil in the target path so that the fourth temperature parameter is within the target range.

[0071] The process shown in S101-S103 above determines the target path based on the first temperature parameter and the second temperature parameter, and uses the cooling method corresponding to the target path to cool the oil in the target path so that the fourth temperature parameter is within the target range. Based on the cooling effect of at least one cooler and combined with the third temperature parameter as a reference basis, effective control of the oil temperature in the main oil channel of the engine is achieved to ensure that the oil temperature is not too high.

[0072] like Figure 2 As shown, it is a flow chart of another oil temperature control method provided in an embodiment of the present application, which includes the following steps.

[0073] S201: Acquire a first temperature parameter and a second temperature parameter.

[0074] The specific principles of the first temperature parameter and the second temperature parameter can be found in the above Figure 1 The explanation of the steps shown will not be repeated here.

[0075] S202: Determine whether the second temperature parameter is less than a fourth temperature threshold.

[0076] If the second temperature parameter is less than the fourth temperature threshold, execute S203; otherwise, execute S206.

[0077] S203: Determine a third temperature parameter based on the difference between the first temperature parameter and the second temperature parameter.

[0078] The specific execution process and implementation principle of S203 can be found in the explanation of the steps shown in S101 above, and will not be repeated here.

[0079] After executing S203 , proceed to S204 .

[0080] S204: Acquire a target path from the paths corresponding to at least one cooler according to the third temperature parameter.

[0081] The specific execution process and implementation principle of S204 can be found in the explanation of the steps shown in S102 above, which will not be repeated here.

[0082] S205: Cooling the engine oil in the target path based on the cooling method corresponding to the target path, so that the fourth temperature parameter is within the target range.

[0083] The specific execution process and implementation principle of S205 can be found in the explanation of the steps shown in S103 above, and will not be repeated here.

[0084] S206: The path corresponding to the second cooler is used as the target path.

[0085] After executing S206 , continue executing S205 .

[0086] Among them, when the second temperature parameter is not less than the fourth temperature threshold, it is determined that the cooling effect of the first cooler has failed. In order to avoid the first cooler bringing negative effects to the engine oil (i.e., increasing the engine oil temperature), the path corresponding to the second cooler is selected from the paths corresponding to at least one cooler as the target path, that is, the second cooler is used to cool the engine oil.

[0087] The process shown in S201-S206 above can utilize the second cooler to cool the engine oil when the cooling effect of the first cooler fails, thereby ensuring that the engine oil temperature is not too high and achieving effective control of the engine oil temperature.

[0088] To further understand the above Figure 1 and Figure 2 The process shown is described in detail based on the oil temperature control system in the embodiment of the present application.

[0089] like Figure 3 , which is a schematic diagram of the architecture of an oil temperature control system provided in an embodiment of the present application.

[0090] The oil temperature control system includes a cooling water temperature sensor, an oil temperature sensor, an electronic control unit (ECU), a first shut-off valve, a second shut-off valve, a main oil cooler, and an auxiliary oil cooler.

[0091] See also Figure 3As shown, the ECU is connected to the oil temperature sensor, cooling water temperature sensor, first shutoff valve, and second shutoff valve. The oil temperature sensor is installed in the oil line before the oil enters the cooler and detects the temperature of the oil before it is cooled by the cooler. The cooling water temperature sensor is installed in the water line before it enters the main oil cooler and detects the temperature of the cooling water entering the main oil cooler. The oil cooler and auxiliary oil cooler cool the oil, reducing its temperature. The cooled oil enters the engine's main oil gallery and is then supplied to various locations requiring lubrication. The first shutoff valve is installed between the main oil cooler and the oil filter to control the flow of oil into the main oil cooler. The second shutoff valve is installed between the auxiliary oil cooler and the oil filter to control the flow of oil into the auxiliary oil cooler.

[0092] It should be noted that the data collected by the oil temperature sensor is a specific manifestation of the first temperature parameter, the data collected by the cooling water temperature sensor is a specific manifestation of the second temperature parameter, the first shut-off valve and the second shut-off valve are a specific manifestation of the valve, the main oil cooler is a specific manifestation of the first cooler, and the auxiliary oil cooler is a specific manifestation of the second cooler.

[0093] This oil temperature control system can be used in vehicles. Compared to other vehicles, vehicles equipped with this oil temperature control system are equipped with an additional auxiliary oil cooler. This auxiliary oil cooler is an air-cooled cooler located at the front of the vehicle body, utilizing the oncoming wind to achieve cooling while the vehicle is in motion. The main oil cooler is a water-cooled cooler. While the vehicle is in motion, the main oil cooler or the auxiliary oil cooler is selected to cool the oil based on the cooling water temperature (i.e., the second temperature parameter) and the oil temperature (i.e., the first temperature parameter). This lowers the oil temperature and keeps it within the target range, preventing excessively high oil temperature and low viscosity, which could cause component wear and malfunction.

[0094] In this embodiment of the present application, the main oil cooler and the auxiliary oil cooler are selected to cool the engine oil based on the cooling water temperature and the engine oil temperature. Essentially, this involves determining a target path based on the cooling water temperature and the engine oil temperature, and then using the cooler corresponding to the target path to cool the engine oil in the target path. Specifically, the specific implementation process for oil cooling using the main oil cooler and the auxiliary oil cooler includes the following.

[0095] During vehicle driving, the oil temperature sensor obtains the oil temperature T0 in real time and reports it to the ECU. The cooling water temperature sensor obtains the cooling water temperature T1 in real time and reports it to the ECU. The ECU executes the logical processing content shown below. In the logical processing content shown, it is assumed that the first temperature threshold is m℃, m is a positive number, the second temperature threshold is 0℃, the third temperature threshold is -m℃, and the fourth temperature threshold is 100℃.

[0096] Step 1: Analyze the cooling water temperature T1 in advance to determine whether the cooling water temperature T1 is less than 100°C.

[0097] Step 2: When the cooling water temperature T1 is less than 100° C., the difference between the oil temperature T0 and the cooling water temperature T1 is calculated to obtain a third temperature parameter T0-T1.

[0098] Step 3: If T0-T1>m, it indicates that the oil temperature is higher than the cooling water temperature. The first shut-off valve is controlled to open, allowing the oil to enter the path corresponding to the main oil cooler. The second shut-off valve is controlled to close, blocking the oil from entering the path corresponding to the auxiliary oil cooler. The main oil cooler is used to cool the oil to keep the oil temperature within the target range to ensure normal engine operation.

[0099] Step 4: If 0≤T0-T1≤m, it indicates that the engine oil temperature is higher than the cooling water temperature, but the difference between the oil temperature and the cooling water temperature is not large. The first shut-off valve is controlled to open, and the engine oil enters the path corresponding to the main oil cooler. The second shut-off valve is controlled to open, and the engine oil enters the path corresponding to the auxiliary oil cooler. The main oil cooler and the auxiliary oil cooler are used to cool the engine oil together. At the same time, the cooling water flow entering the main oil cooler can be increased to enhance the cooling effect, reduce the engine oil temperature, and ensure normal operation of the engine.

[0100] Step 5: If -m<T0-T1<0, it means that the cooling water temperature is higher than the oil temperature, but the difference between the cooling water temperature and the oil temperature is not large. At this time, the cooling water cannot cool the oil. The first shut-off valve is controlled to close, closing the path corresponding to the main oil cooler for the oil to enter, and the second shut-off valve is controlled to open, allowing the oil to enter the path corresponding to the auxiliary oil cooler, and the auxiliary oil cooler is used to cool the oil.

[0101] Step 6: If T0-T1≤-m, it means that the cooling water temperature is much higher than the oil temperature. This situation usually occurs during the vehicle startup and warm-up phase. The first shut-off valve is controlled to open, allowing the oil to enter the path corresponding to the main oil cooler. The second shut-off valve is controlled to close, closing the path corresponding to the auxiliary oil cooler. The high-temperature cooling water is used to heat the oil, increasing the oil temperature and reducing the oil viscosity, achieving rapid warm-up, and reducing component wear and mechanical losses.

[0102] It should be noted that the processing logic shown in steps 2-6 above can ensure that the oil temperature in the engine main oil gallery is maintained within a reasonable range when the cooling water temperature is less than 100° C., without affecting the normal operation of the engine.

[0103] Specifically, the processing logic mentioned in steps 2-6 above can be simply summarized as follows: Figure 4 In summary, the process shown is that when the cooling water temperature is less than 100°C, the main oil cooler and auxiliary oil cooler are selected to cool the oil according to the cooling water temperature and the oil temperature, thereby lowering the oil temperature and keeping the oil temperature within the target range. This prevents the oil temperature from being too high and the viscosity from being too low, which may cause wear on components and lead to malfunctions, thereby ensuring reliable engine operation.

[0104] Step 7: When the cooling water temperature T1 is greater than or equal to 100°C, the cooling water temperature is determined to be too high, and the first shut-off valve is controlled to close, closing the path corresponding to the main oil cooler for the engine oil, and the second shut-off valve is controlled to open, allowing the engine oil to enter the path corresponding to the auxiliary oil cooler. The auxiliary oil cooler is used to cool the engine oil to prevent the cooling water temperature from being too high, causing the oil temperature to deviate and causing a malfunction, thereby ensuring reliable engine operation.

[0105] Specifically, the processing logic shown in step 7 above can be simply summarized as follows: Figure 5 The process shown.

[0106] It should be emphasized that the number of auxiliary oil coolers is not limited to that shown in the embodiment of the present application. In order to improve the cooling efficiency, technicians can add auxiliary oil coolers according to actual conditions.

[0107] In summary, the embodiment of the present application uses the first temperature parameter and the second temperature parameter as a reference, and reasonably selects the first cooler and the second cooler to cool the engine oil, thereby ensuring that the oil temperature is within the target range and ensuring normal operation of the engine.

[0108] Corresponding to the oil temperature control method provided in the above-mentioned embodiment of the present application, the embodiment of the present application also provides an oil temperature control device.

[0109] like Figure 6 , which is a schematic diagram of the architecture of an oil temperature control device provided in an embodiment of the present application, including the units shown below.

[0110] The temperature difference determination unit 100 is used to determine a third temperature parameter based on a first temperature parameter and a second temperature parameter; the first temperature parameter is used to characterize the temperature of the engine oil not cooled by the cooler; the second temperature parameter is used to characterize the temperature of the specified cooling medium.

[0111] In the oil temperature control device shown, the temperature difference determination unit 100 is specifically used to: pre-acquire a second temperature parameter; and determine a third temperature parameter based on the difference between the first temperature parameter and the second temperature parameter when the second temperature parameter is less than a fourth temperature threshold.

[0112] The path determination unit 200 is used to obtain a target path from the paths corresponding to at least one cooler based on a third temperature parameter; the path is used to represent the channel through which the oil flows into the main oil channel of the engine; the cooler is used to cool the oil in the path according to the cooling method corresponding to its own cooling medium.

[0113] Optionally, the at least one cooler includes a first cooler and a second cooler; the first cooler uses a designated cooling medium as its own cooling medium; and the cooling medium of the second cooler is different from the designated cooling medium.

[0114] In the oil temperature control device shown, the path determination unit 200 is specifically configured to: if the third temperature parameter is greater than the first temperature threshold, select the path corresponding to the first cooler as the target path.

[0115] Optionally, the path determination unit 200 is specifically configured to: if the third temperature parameter is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, select the path corresponding to the first cooler and the path corresponding to the second cooler as the target path.

[0116] Optionally, the path determination unit 200 is specifically configured to: if the third temperature parameter is less than the second temperature threshold and greater than or equal to the third temperature threshold, select the path corresponding to the second cooler as the target path.

[0117] Optionally, the path determination unit 200 is specifically configured to: if the third temperature parameter is less than a third temperature threshold, select the path corresponding to the first cooler as the target path.

[0118] Optionally, the path determination unit 200 is further configured to: when the second temperature parameter is not less than a fourth temperature threshold, use the path corresponding to the second cooler as the target path.

[0119] The oil temperature control unit 300 is used to cool the oil in the target path based on the cooling method corresponding to the target path so that the fourth temperature parameter is within the target range; the fourth temperature parameter is used to characterize the oil temperature in the engine main oil channel.

[0120] In the oil temperature control device shown, the oil temperature control unit 300 is specifically used to: control the valves corresponding to the paths other than the target path to be in a closed state; control the valves corresponding to the target path to be in an open state so that the oil flows into the main oil channel of the engine through the target path, and use the cooling method corresponding to the target path to cool the oil in the target path so that the fourth temperature parameter is within the target range.

[0121] Each of the units shown above determines a target path based on the first temperature parameter and the second temperature parameter, and uses a cooling method corresponding to the target path to cool the oil in the target path so that the fourth temperature parameter is within the target range. Based on the cooling effect of at least one cooler and combined with the third temperature parameter as a reference basis, effective control of the oil temperature in the main oil channel of the engine is achieved to ensure that the oil temperature is not too high.

[0122] The present application also provides a computer-readable storage medium, which includes a stored program, wherein the program executes the oil temperature control method provided by the present application.

[0123] The present application also provides a vehicle, comprising: a processor, a memory, and a bus. The processor and the memory are connected via the bus, the memory is used to store a program, and the processor is used to run the program, wherein the program executes the oil temperature control method provided by the present application when it is run.

[0124] In addition, the functions described above in the embodiments of the present application may be at least partially performed by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0125] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

[0126] Although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0127] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for controlling engine oil temperature, characterized in that: include: Using a preset sensor, real-time monitoring is performed to obtain a first temperature parameter and a second temperature parameter; determining a cooling effect of the first cooler based on the second temperature parameter; When the cooling effect of the first cooler is effective, determining a third temperature parameter for triggering the switching of the cooling path based on the difference between the first temperature parameter and the second temperature parameter; the first temperature parameter is used to represent the temperature of the engine oil not cooled by the cooler; and the second temperature parameter is used to represent the temperature of the designated cooling medium; Obtaining a target path from paths corresponding to at least one cooler based on the third temperature parameter; the path being used to represent a passage through which engine oil flows into a main oil gallery of the engine; the cooler being used to cool the engine oil in the path based on a cooling method corresponding to its own cooling medium; Based on the cooling method corresponding to the target path, the oil in the target path is cooled so that a fourth temperature parameter is within a target range; the fourth temperature parameter is used to characterize the oil temperature in the main oil gallery of the engine.

2. The method according to claim 1, characterized in that The at least one cooler includes the first cooler and the second cooler; the first cooler uses the designated cooling medium as its own cooling medium; the cooling medium of the second cooler is different from the designated cooling medium.

3. The method according to claim 2, characterized in that Acquiring a target path from paths corresponding to at least one cooler according to the third temperature parameter includes: If the third temperature parameter is greater than the first temperature threshold, the path corresponding to the first cooler is selected as the target path.

4. The method according to claim 2, characterized in that Acquiring a target path from paths corresponding to at least one cooler according to the third temperature parameter includes: If the third temperature parameter is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, the path corresponding to the first cooler and the path corresponding to the second cooler are selected as target paths.

5. The method according to claim 2, characterized in that Acquiring a target path from paths corresponding to at least one cooler according to the third temperature parameter includes: If the third temperature parameter is less than the second temperature threshold and greater than or equal to the third temperature threshold, the path corresponding to the second cooler is selected as the target path.

6. The method according to claim 2, characterized in that Acquiring a target path from paths corresponding to at least one cooler according to the third temperature parameter includes: If the third temperature parameter is less than a third temperature threshold, the path corresponding to the first cooler is selected as the target path.

7. The method according to claim 2, characterized in that After pre-acquiring the second temperature parameter, the method further includes: When the second temperature parameter is not less than a fourth temperature threshold, a path corresponding to the second cooler is used as the target path.

8. The method according to any one of claims 1 to 7, characterized in that: Cooling the engine oil in the target path based on the cooling method corresponding to the target path so that the fourth temperature parameter is within a target range includes: Controlling valves corresponding to paths other than the target path to be in a closed state; The valve corresponding to the target path is controlled to be in an open state so that the oil flows into the engine main oil channel through the target path, and the oil in the target path is cooled using the cooling method corresponding to the target path so that the fourth temperature parameter is within the target range.

9. An oil temperature control device, characterized in that: include: a temperature difference determination unit, configured to obtain a first temperature parameter and a second temperature parameter by real-time monitoring using a preset sensor; determining a cooling effect of the first cooler based on the second temperature parameter; and determining a third temperature parameter for triggering a cooling path switch based on a difference between the first temperature parameter and the second temperature parameter if the cooling effect of the first cooler is effective; the first temperature parameter being used to represent a temperature of the engine oil not cooled by the cooler; and the second temperature parameter being used to represent a temperature of a designated cooling medium; a path determination unit, configured to obtain a target path from paths corresponding to at least one cooler based on the third temperature parameter; the path being configured to represent a passage through which engine oil flows into a main oil gallery of the engine; the cooler being configured to cool the engine oil in the path based on a cooling method corresponding to its own cooling medium; an oil temperature control unit, configured to cool the engine oil in the target path based on a cooling method corresponding to the target path, so that a fourth temperature parameter is within a target range; The fourth temperature parameter is used to characterize the oil temperature in the main oil gallery of the engine.

10. A vehicle, characterized in that: include: processor, memory, and bus; The processor is connected to the memory via the bus; The memory is used to store a program, and the processor is used to run the program, wherein the program is executed by the processor to execute the oil temperature control method according to any one of claims 1 to 8.

Images