Control method for oil pump of vehicle and related device
By adjusting the oil pressure table of the oil pump according to the actual driving situation, the problem of increased fuel consumption of the vehicle oil pump under high pressure is solved and the fuel performance is improved.
Patent Information
- Application Number
- CN202410039399.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-07-11
Smart Images
Figure CN120291949A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicles, and particularly to a control method and related device for a vehicle oil pump. Background Art
[0002] With the increase in the types of vehicles, users can make comparisons in many aspects of the vehicles. Among them, vehicle fuel consumption, as an important indicator of vehicle driving performance, has received extensive attention from users.
[0003] In the related art, the electronic control unit of the vehicle stores a target pressure table representing the corresponding relationship between the engine load, engine speed, and oil pressure value. The oil pressure of the oil pump is controlled according to the target pressure table to reduce the energy consumption of the oil pump, thereby reducing fuel consumption.
[0004] However, in order to ensure the power performance and reliability of the vehicle engine, the oil pressure values set in the target pressure table are generally higher than the oil pressure values of the vehicle under standard working conditions. The vehicle oil pump is in an overloaded working condition under the higher oil pressure values, thus increasing the resistance of the engine operation, making the power required for the vehicle operation increase, and its engine fuel consumption also increases accordingly, resulting in a decline in the fuel performance of the vehicle. Summary of the Invention
[0005] In order to solve the above technical problems, the present application provides a control method and related device for a vehicle oil pump. The target pressure table stored in the vehicle is corrected by considering the actual driving habits of the user to adapt to different driving styles of different users.
[0006] The embodiments of the present application disclose the following technical solutions:
[0007] In a first aspect, the embodiments of the present application disclose a control method for a vehicle oil pump, and the method includes:
[0008] Obtain the actual engine load and actual engine speed of the target vehicle, and a plurality of actual oil pressure values corresponding to the actual engine load and the actual engine speed within a first preset time; the actual engine load, the actual engine speed, and the plurality of actual oil pressure values are obtained when the target vehicle is being driven by a driving user;
[0009] According to the plurality of actual oil pressure values, correct the oil pressure values in the target pressure table to obtain a corrected pressure table including corrected oil pressure values; the target pressure table is pre-stored in the electronic control unit of the target vehicle and is used to represent the corresponding relationship between the engine load, engine speed, and oil pressure value of the target vehicle;
[0010] Control the oil pressure of the oil pump of the target vehicle according to the corrected pressure table.
[0011] Optionally, correcting the oil pressure values in the target pressure table according to the multiple actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes:
[0012] Calculate the error of the multiple actual oil pressure values to obtain an oil pressure fluctuation value;
[0013] Calculate the difference between the oil pressure values in the target pressure table and the oil pressure fluctuation value to obtain the corrected oil pressure value;
[0014] Correct the oil pressure values according to the corrected oil pressure values to obtain a corrected pressure table.
[0015] Optionally, correcting the oil pressure values in the target pressure table according to the multiple actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes:
[0016] Calculate the average value of the multiple actual oil pressure values to obtain an oil pressure average value;
[0017] Correct the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values.
[0018] Optionally, correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values includes:
[0019] In response to determining that the oil pressure average value is greater than or equal to the oil pressure safety limit value, correct the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values; the oil pressure safety limit value is pre-stored in the electronic control unit of the target vehicle.
[0020] Optionally, before correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values, the method further includes:
[0021] Copy the target pressure table to obtain a pressure table to be corrected;
[0022] Correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values includes:
[0023] According to the average engine oil pressure, correct the engine oil pressure values in the target pressure table to be corrected, and obtain a corrected pressure table including the corrected engine oil pressure values;
[0024] After delaying for a second preset time, correct the target pressure table according to the corrected pressure table.
[0025] Optionally, the correcting the target pressure table according to the corrected pressure table after delaying for a second preset time includes:
[0026] After delaying for a second preset time, in response to determining that the target vehicle is in a non-operating state, correct the target pressure table according to the corrected pressure table.
[0027] Optionally, the method further includes:
[0028] According to the user information of multiple driving users, store multiple corrected pressure tables corresponding to the multiple user information in the target vehicle;
[0029] Identify the driving user information from the multiple user information through the cab of the target vehicle;
[0030] Obtain the corrected pressure table of the driving user information;
[0031] The controlling the oil pump of the target vehicle according to the corrected pressure table includes:
[0032] Control the oil pump of the target vehicle according to the corrected pressure table of the driving user information.
[0033] In a second aspect, an embodiment of the present application discloses a control device for a vehicle oil pump, and the device includes:
[0034] An acquisition unit, configured to acquire the actual engine load and actual engine speed of a target vehicle, and a plurality of actual engine oil pressure values corresponding to the actual engine load and the actual engine speed within a first preset time; the actual engine load, the actual engine speed, and the plurality of actual engine oil pressure values are acquired when the target vehicle is being driven by a driving user;
[0035] A correction unit, configured to correct the engine oil pressure values in a target pressure table according to the plurality of actual engine oil pressure values, and obtain a corrected pressure table including the corrected engine oil pressure values; the target pressure table is pre-stored in an electronic control unit of the target vehicle and is used to represent the correspondence between the engine load, engine speed, and engine oil pressure value of the target vehicle;
[0036] A control unit for controlling the oil pressure of the oil pump of the target vehicle according to the corrected pressure table.
[0037] Optionally, the correction unit is further configured to:
[0038] Calculate the error of the multiple actual oil pressure values to obtain an oil pressure fluctuation value;
[0039] Calculate the difference between the oil pressure value in the target pressure table and the oil pressure fluctuation value to obtain the corrected oil pressure value;
[0040] Correct the oil pressure value according to the corrected oil pressure value to obtain a corrected pressure table.
[0041] Optionally, the correction unit is further configured to:
[0042] Calculate the average value of the multiple actual oil pressure values to obtain an oil pressure average value;
[0043] Correct the oil pressure value in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including the corrected oil pressure value.
[0044] Optionally, the correction unit is further configured to:
[0045] In response to determining that the oil pressure average value is greater than or equal to the oil pressure safety limit value, correct the oil pressure value in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including the corrected oil pressure value; the oil pressure safety limit value is pre-stored in the electronic control unit of the target vehicle.
[0046] Optionally, the device further includes:
[0047] A copying unit for copying the target pressure table to obtain a pressure table to be corrected;
[0048] The correction unit is further configured to:
[0049] Correct the oil pressure value in the to-be-corrected target pressure table according to the oil pressure average value to obtain a corrected pressure table including the corrected oil pressure value;
[0050] After delaying for a second preset time, correct the target pressure table according to the corrected pressure table.
[0051] Optionally, the correction unit is further configured to:
[0052] After delaying for a second preset time, in response to determining that the target vehicle is in a non-operating state, the target pressure table is corrected according to the corrected pressure table.
[0053] Optionally, the device further includes:
[0054] A table storage unit, configured to store multiple corrected pressure tables corresponding to multiple user information in the target vehicle according to the user information of multiple driving users;
[0055] An information recognition unit, configured to recognize driving user information from the multiple user information through the cab of the target vehicle;
[0056] A table acquisition unit, configured to acquire the corrected pressure table of the driving user information;
[0057] The control unit is further configured to:
[0058] Control the oil pump of the target vehicle according to the corrected pressure table of the driving user information.
[0059] In a third aspect, an embodiment of the present application discloses a computer device, which includes a processor and a memory:
[0060] The memory is used to store program code and transmit the program code to the processor;
[0061] The processor is configured to execute the control method of the vehicle oil pump as described in the first aspect and any optional item of the first aspect according to the instructions in the program code.
[0062] In a fourth aspect, an embodiment of the present application discloses a computer-readable storage medium, which is used to store a computer program, and the computer program is used to execute the control method of the vehicle oil pump as described in the first aspect and any optional item of the first aspect when being executed by a processor.
[0063] As can be seen from the above technical solution, according to the actual driving situation of the driving user, the actual engine load and actual engine speed of the target vehicle are obtained, as well as multiple actual oil pressure values of the oil pump of the target vehicle under the actual engine load and actual engine speed within the first preset time; since during vehicle driving, the actual oil pressure values fluctuate and are not exactly the same as the oil pressure values in the target pressure table; therefore, the actual driving habits of the user can be reflected by multiple actual oil pressure values, that is, the actual oil pressure values reached by the oil pump during the user's actual driving; and the oil pressure values in the target pressure table are corrected according to the actual oil pressure values to obtain a corrected pressure table; and then the oil pump of the target vehicle is controlled according to the corrected pressure table; so that the oil pump can operate according to the corrected pressure table, that is, the driving habits of the user are incorporated into the corrected pressure table, and the target vehicle can control the output of the oil pump according to the driving habits of the user, thereby improving the fuel performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0065] Figure 1 It is a flowchart of a control method for a vehicle oil pump provided by an embodiment of the present application;
[0066] Figure 2 It is a structural block diagram of a control device for a vehicle oil pump provided by an embodiment of the present application;
[0067] Figure 3 It is a structural block diagram of a computer device for vehicle oil pump control provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0068] In order to enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.
[0069] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinguishing objects with the same attributes when describing the embodiments of the present application.
[0070] For the convenience of understanding the technical solution of the present application, some technical terms involved in the present application are introduced below.
[0071] An oil pump is a component in a vehicle that is used to increase the oil pressure to ensure a certain amount of oil, so as to forcibly supply oil to the friction surfaces of various components to provide lubrication, and is widely used in internal combustion engines. According to different conditions for changing the oil displacement, the oil pump can be divided into a fixed-displacement oil pump and a variable-displacement oil pump. The oil output of the fixed-displacement oil pump increases with the increase in engine speed, and the two are in a linear relationship; however, when the engine speed is low, the oil displacement is small, which is likely to cause insufficient lubrication, and when the engine speed is high, the oil displacement is too high, resulting in power waste. Therefore, the variable-displacement oil pump that can change the oil displacement according to the engine operating state has been more and more widely used.
[0072] To ensure the reliability of the engine, in related technologies, a target pressure table for the oil pressure value changing with the engine load and engine speed is set in processing devices such as the engine electronic control unit (ECU). During actual driving, the oil pressure value corresponding to the currently found engine load and engine speed is used as the target value, and the output duty ratio of the variable-displacement oil pump is adjusted according to the target value to adjust the oil pressure value.
[0073] However, the oil pressure value set in the vehicle target pressure table is generally higher than the oil pressure value of the vehicle under standard working conditions, and after the table values are set in the engine electronic control unit, the values in the table no longer change, which results in an increase in the fuel consumption of the engine due to the higher oil pressure value, leading to a decline in the fuel performance of the vehicle.
[0074] To solve the above technical problems, the embodiment of the present application provides a control method for a vehicle oil pump. By obtaining the actual engine load and actual engine speed when the driving user drives the vehicle, as well as multiple actual oil pressure values corresponding to the actual engine load and actual engine speed, the actual driving habits of the driving user are reflected according to the fluctuation conditions of the multiple actual oil pressure values, and the target pressure table is corrected according to the corresponding actual driving habits, so that the vehicle oil pump can adjust the oil pressure value according to the actual driving habits of the driving user, achieving the purpose of improving the fuel performance of the vehicle.
[0075] Next, in combination with the accompanying drawings, a calculation method for the cruising range of an extended-range hybrid vehicle provided by the embodiment of the present application will be introduced. Please refer to Figure 1 , Figure 1 is a flowchart of a control method for a vehicle oil pump provided by an embodiment of the present application. The method includes:
[0076] S101: Obtain the actual engine load and actual engine speed of the target vehicle, as well as multiple actual oil pressure values corresponding to the actual engine load and actual engine speed within a first preset time.
[0077] Among them, the actual engine load can be obtained from the load characteristic curve measured during engine operation; the actual engine speed can be measured by a speed sensor, such as an electromagnetic speed sensor or a laser speed sensor, etc., or can also be obtained by other means; the first preset time is calibrated according to parameters such as the model of the target vehicle or the engine type.
[0078] Since during the actual driving process of the vehicle, the actual oil pressure value does not strictly remain consistent, but there is a certain fluctuation, there are multiple actual oil pressure values within the first preset time. In the acquisition of the actual oil pressure value, it can be collected by means of sampling at fixed intervals or random sampling, or the instantaneous actual oil pressure value at each moment can be obtained through real-time sampling, and then a fluctuation curve of the actual oil pressure value within the first preset time can be formed.
[0079] Among them, the actual engine load, actual engine speed and multiple actual oil pressure values are obtained when the target vehicle is being driven by a driving user. Since the driving habits of different driving users are different, for example, some driving users have a higher degree of driving aggressiveness, some driving users are neutral in driving, and another part of the users drive more gently. When they drive the target vehicle, the actual oil pressure values given by the oil pump are different. Therefore, the actual oil pressure value can reflect the driving habit of the driving user.
[0080] S102: Modify the oil pressure values in the target pressure table according to multiple actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values.
[0081] Among them, the target pressure table is pre-stored in the electronic control unit of the target vehicle and is used to represent the corresponding relationship between the engine load, engine speed and oil pressure value of the target vehicle.
[0082] In some possible implementation manners of the embodiments of the present application, the vehicle lubrication system can be tested, and then according to the calculation and verification of computer-aided engineering (CAE for short), the oil pressure values corresponding to each engine speed and each engine load can be determined. Then, according to the obtained oil pressure values, each engine speed, each engine load and their respectively corresponding oil pressure values are recorded in the target pressure table.
[0083] In some possible implementation manners of the embodiments of the present application, in order to comprehensively consider the driving habits of the driving user and balance the engine reliability and fuel performance, the method of correcting the oil pressure value in the target pressure table according to the multiple actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes:
[0084] Calculate the average value of the multiple actual oil pressure values to obtain the average oil pressure;
[0085] Correct the oil pressure value in the target pressure table according to the average oil pressure to obtain a corrected pressure table including corrected oil pressure values.
[0086] In some possible implementation manners of the embodiments of the present application, the average oil pressure may be to select the highest oil pressure value and the lowest oil pressure value among the multiple actual oil pressure values, and take the average of the two as the average oil pressure.
[0087] In some other possible implementation manners of the embodiments of the present application, the average oil pressure may also be to sample the multiple obtained actual oil pressure values, and take the average value of the sampled values as the average oil pressure for correcting the oil pressure table.
[0088] For the correction process of the target pressure table based on the average oil pressure, the average oil pressure can be used as the corrected oil pressure value by replacing the oil pressure value in the target pressure table with the average oil pressure, so as to obtain the corrected pressure table; or weights can be assigned to the obtained average oil pressure and the oil pressure value in the target pressure table, and the weighted sum of the two can be used as the corrected oil pressure value to correct the target pressure table.
[0089] S103: Control the oil pressure of the oil pump of the target vehicle according to the corrected pressure table.
[0090] The corrected pressure table is stored in the ECU instead of the target pressure table. When the oil pump outputs oil pressure, the ECU determines the corresponding oil pressure in the corrected pressure table according to the real-time engine load and real-time engine speed of the target vehicle, and controls the output duty ratio of the oil pump accordingly to control the oil pressure of the oil pump.
[0091] To further improve the fuel performance and reduce the fuel consumption of the engine, based on the above embodiments, further, the method of correcting the oil pressure value in the target pressure table according to the multiple actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes:
[0092] Calculate the error of the multiple actual oil pressure values to obtain the oil pressure fluctuation value;
[0093] Calculate the difference between the engine oil pressure value and the engine oil pressure fluctuation value in the target pressure table to obtain the corrected engine oil pressure value;
[0094] Correct the engine oil pressure value according to the corrected engine oil pressure value to obtain the corrected pressure table.
[0095] Among them, due to the fluctuation of the actual engine oil pressure value during actual driving, the engine oil pressure fluctuation value is the difference between the highest actual engine oil pressure value and the lowest actual engine oil pressure value.
[0096] For the correction process of the target pressure table based on the corrected engine oil pressure value, the corrected pressure table can be obtained by replacing the engine oil pressure value in the target pressure table with the corrected engine oil pressure value.
[0097] For driving users with a lower degree of aggressive driving, by taking the difference between the engine oil pressure value and the engine oil pressure fluctuation value, a relatively low engine oil pressure value can be selected, so as to maximize the fuel performance within a reasonable range.
[0098] To improve the reliability and power performance of the engine and prevent the corrected engine oil pressure value from being too low due to correction, based on the above embodiments, further, the method of correcting the engine oil pressure value in the target pressure table according to the average engine oil pressure value to obtain a corrected pressure table including the corrected engine oil pressure value includes:
[0099] In response to determining that the average engine oil pressure value is greater than or equal to the engine oil pressure safety limit value, correct the engine oil pressure value in the target pressure table according to the average engine oil pressure value to obtain a corrected pressure table including the corrected engine oil pressure value.
[0100] Among them, the engine oil pressure safety limit value is pre-stored in the electronic control unit of the target vehicle.
[0101] Since the oil pump requires a sufficient engine oil pressure value to pump a sufficient amount of engine oil into the engine for engine lubrication, the engine oil pressure value of the oil pump cannot be too low.
[0102] In some possible implementation manners of the embodiments of the present application, a warning version of the target pressure table can be pre-stored in the ECU of the target vehicle, and the engine oil pressure safety limit value corresponding to the engine load and the engine speed is stored in the warning version of the target pressure table. When the obtained average engine oil pressure value is greater than or equal to the engine oil pressure safety limit value, the target pressure table can be corrected; when the obtained average engine oil pressure value is less than the engine oil pressure safety limit value, no correction is performed.
[0103] At this time, the actual oil pressure value can also be measured by an oil pressure sensor. If the measured actual oil pressure value is less than the oil pressure safety limit value, a fault alarm is triggered to prompt the driving user that the oil pressure output by the oil pump is insufficient.
[0104] Of course, similar to the above implementation method, for the corrected oil pressure value calculated from the oil pressure fluctuation value and the oil pressure value, through the above comparison process, the oil pressure output by the oil pump can also be controlled not to be lower than the oil pressure safety limit value.
[0105] By setting the oil pressure safety limit value and implementing the comparison process, it is ensured that the corrected oil pressure to be written into the corrected pressure table will not be too low, ensuring that there is sufficient oil pressure for a sufficient amount of lubricating oil to enter the engine, thereby ensuring the power performance and reliability of the engine.
[0106] To reduce the frequent correction phenomenon of the target pressure table, based on the above embodiments, further, before correcting the oil pressure value in the target pressure table according to the average oil pressure value to obtain a corrected pressure table including the corrected oil pressure value, the method further includes:
[0107] Copy the target pressure table to obtain a pressure table to be corrected;
[0108] Correcting the oil pressure value in the target pressure table according to the average oil pressure value to obtain a corrected pressure table including the corrected oil pressure value includes:
[0109] Correcting the oil pressure value in the pressure table to be corrected according to the average oil pressure value to obtain a corrected pressure table including the corrected oil pressure value;
[0110] After delaying the second preset time, correct the target pressure table according to the corrected pressure table.
[0111] Similar to the aforementioned first preset time, the second preset time can also be calibrated according to parameters such as the vehicle model or engine type of the target vehicle.
[0112] Among them, the pressure table to be corrected and the target pressure table can be stored in the same ECU of the target vehicle, or can be stored in different ECUs of the target vehicle and transmitted through a bus or other communication forms. It is also possible to store the pressure table to be corrected in a cloud server, and upload the average oil pressure value to the cloud server to correct the pressure table to be corrected in the cloud server, and download the corrected pressure table after correction to the ECU of the target vehicle.
[0113] By setting the pressure table to be corrected, pre-correcting the pressure table to be corrected, and globally replacing the target pressure table, the global correction of the target pressure table is achieved, thereby reducing the frequent correction phenomenon of the target pressure table, reducing the correction frequency, and reducing the calculation and transmission load of the vehicle.
[0114] To ensure the continuity of the oil pump's control over the oil pressure and reduce the sudden change in the oil pressure output, based on the above embodiments, further, after delaying the second preset time, correcting the target pressure table according to the corrected pressure table includes:
[0115] After delaying the second preset time, in response to determining that the target vehicle is in an inoperative state, correct the target pressure table according to the corrected pressure table.
[0116] Wherein, the state of the vehicle can be determined by the measured actual engine speed or actual engine load. When the actual engine load is zero or the actual engine speed is zero, it is determined that the target vehicle is in an inoperative state.
[0117] In some possible implementation manners of the embodiments of the present application, replace the target pressure table based on the corrected pressure table, and when the target vehicle is started next time, control the oil pump of the target vehicle based on the corrected pressure table.
[0118] By pre-judging the operating state of the vehicle, ensure that the oil pump is controlled based on the same pressure table during a single continuous operation of the vehicle, so as to ensure the continuity of the oil pump's control over the oil pressure.
[0119] To provide appropriate oil pressures for different driving users' driving habits respectively, based on the above embodiments, further, the method further includes:
[0120] According to the user information of multiple driving users, store multiple corrected pressure tables corresponding to the multiple user information in the target vehicle;
[0121] Identify the driving user information from the multiple user information through the cab of the target vehicle;
[0122] Obtain the corrected pressure table of the driving user information;
[0123] Controlling the oil pump of the target vehicle according to the corrected pressure table includes:
[0124] Control the oil pump of the target vehicle according to the corrected pressure table of the driving user information.
[0125] Generally speaking, during a continuous driving, only one driving user can drive the same target vehicle. That is to say, in this case, the target vehicle cannot change the driving user. However, the same target vehicle is usually driven by different driving users. Therefore, it is necessary to store separately corresponding corrected pressure tables for different driving users, and when a certain driving user drives, the corresponding corrected pressure table is read to control the oil pump.
[0126] In some possible implementation manners of the embodiments of the present application, during the process of obtaining the actual oil pressure value generated by the driving user driving the target vehicle, a camera can be set in the cab of the target vehicle. After the authorization of the driving user, through the face recognition function according to the information collected by the camera, a corresponding relationship is established between the corrected pressure table obtained by correcting the target pressure table according to the actual oil pressure value and the user information of the driving user, that is, the face information. At the same time, the obtained corrected pressure table corresponding to the face information of the driving user is stored.
[0127] During the subsequent process of the driving user driving the target vehicle, in the same way, by collecting the user's face information, the table corresponding to the driving user is found from the saved multiple corrected pressure tables, and the oil pump is controlled according to the table.
[0128] Of course, the user information of the driving user can be face information, or fingerprint information or ID card information, etc., which can be used to identify the identity of the driving user. The present application does not make any limitations in this regard.
[0129] In other possible implementation manners of the embodiments of the present application, with the authorization of the driving user, the corrected pressure table of the vehicle driven by the driving user with the same model and configuration as the target vehicle can be saved through the network. When the driving user drives the same model of vehicle, the saved corrected pressure table can be downloaded through the network and stored in the ECU of the currently driven vehicle, so that the vehicle can adjust the oil pressure output by the oil pump according to its own driving habits.
[0130] Please refer to Figure 2 , Figure 2 which is a structural block diagram of a control device for a vehicle oil pump provided by the embodiments of the present application. The device includes:
[0131] An acquisition unit 210, configured to acquire the actual engine load and the actual engine speed of the target vehicle, and a plurality of actual oil pressure values corresponding to the actual engine load and the actual engine speed within a first preset time; the actual engine load, the actual engine speed, and the plurality of actual oil pressure values are acquired when the target vehicle is driven by a driving user;
[0132] A correction unit 220, configured to correct the oil pressure values in a target pressure table according to the plurality of actual oil pressure values, so as to obtain a corrected pressure table including corrected oil pressure values; the target pressure table is pre-stored in an electronic control unit of the target vehicle and is used to represent the correspondence between the engine load, engine speed and oil pressure value of the target vehicle;
[0133] A control unit 230, configured to control the oil pressure of an oil pump of the target vehicle according to the corrected pressure table.
[0134] As a possible implementation manner, the correction unit is further configured to:
[0135] Calculate an error of the plurality of actual oil pressure values to obtain an oil pressure fluctuation value;
[0136] Calculate a difference between the oil pressure value in the target pressure table and the oil pressure fluctuation value to obtain the corrected oil pressure value;
[0137] Correct the oil pressure value according to the corrected oil pressure value to obtain a corrected pressure table.
[0138] As a possible implementation manner, the correction unit is further configured to:
[0139] Calculate an average value of the plurality of actual oil pressure values to obtain an oil pressure average value;
[0140] Correct the oil pressure value in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values.
[0141] As a possible implementation manner, the correction unit is further configured to:
[0142] In response to determining that the oil pressure average value is greater than or equal to an oil pressure safety limit value, correct the oil pressure value in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values; the oil pressure safety limit value is pre-stored in an electronic control unit of the target vehicle.
[0143] As a possible implementation manner, the device further includes:
[0144] A copying unit, configured to copy the target pressure table to obtain a pressure table to be corrected;
[0145] The correction unit is further configured to:
[0146] According to the average engine oil pressure, correct the engine oil pressure values in the target pressure table to be corrected, and obtain a corrected pressure table including the corrected engine oil pressure values;
[0147] After delaying for a second preset time, correct the target pressure table according to the corrected pressure table.
[0148] As a possible implementation, the correction unit is further configured to:
[0149] After delaying for a second preset time, in response to determining that the target vehicle is in a non-operating state, correct the target pressure table according to the corrected pressure table.
[0150] As a possible implementation, the device further includes:
[0151] A table storage unit, configured to store multiple corrected pressure tables corresponding to multiple user information in the target vehicle according to the user information of multiple driving users;
[0152] An information recognition unit, configured to recognize driving user information from the multiple user information through the cab of the target vehicle;
[0153] A table acquisition unit, configured to acquire the corrected pressure table of the driving user information;
[0154] The control unit is further configured to:
[0155] Control the oil pump of the target vehicle according to the corrected pressure table of the driving user information.
[0156] It can be seen from the above technical solutions that according to the actual driving conditions of the driving user, obtain the actual engine load and actual engine speed of the target vehicle, and multiple actual engine oil pressure values of the oil pump of the target vehicle under the actual engine load and actual engine speed within a first preset time; since during the vehicle driving process, the actual engine oil pressure values fluctuate and are not exactly the same as the engine oil pressure values in the target pressure table; therefore, the actual driving habits of the user can be reflected by multiple actual engine oil pressure values, that is, the actual engine oil pressure values reached by the oil pump during the user's actual driving; and correct the engine oil pressure values in the target pressure table according to the actual engine oil pressure values to obtain a corrected pressure table; and then control the oil pump of the target vehicle according to the corrected pressure table; so that the oil pump can operate according to the corrected pressure table, that is, integrate the user's driving habits into the corrected pressure table, so that the target vehicle can control the output of the oil pump according to the user's driving habits, thereby improving the fuel performance of the vehicle.
[0157] Please refer to Figure 3 , Figure 3A structural block diagram of a computer device provided for the vehicle oil pump control in an embodiment of the present application. The computer device includes a processor 310 and a memory 320:
[0158] The memory 320 is configured to store program codes and transmit the program codes to the processor 310;
[0159] The processor 310 is configured to execute any one of the vehicle oil pump control methods provided in the above embodiments according to the instructions in the program codes.
[0160] An embodiment of the present application further provides a computer-readable storage medium, which is configured to store a computer program. When the computer program is executed by a processor, it is configured to execute any one of the vehicle oil pump control methods provided in the above embodiments.
[0161] It can be understood that this method can be applied to a processing device, which is a processing device capable of performing motion control. For example, it can be a terminal device or a server with motion control functions. This method can be independently executed by the terminal device or the server, or can be applied to a network scenario where the terminal device and the server communicate, and is executed in cooperation with the terminal device and the server. Among them, the terminal device can be a device such as a computer or a mobile phone. The server can be understood as an application server or a Web server. In actual deployment, the server can be an independent server or a cluster server.
[0162] Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium can be at least one of the following media: read-only memory (abbreviation: ROM), RAM, magnetic disk, or optical disc, etc., which can store program codes.
[0163] It should be noted that the embodiments in this specification are all described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the key points of each embodiment are the differences from other embodiments. In particular, for the embodiments of the device and system, since they are basically similar to the method embodiments, the description is relatively simple, and reference can be made to the corresponding parts of the method embodiments for the relevant content. The device and system embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative efforts.
[0164] As described above, this is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A control method for a vehicle oil pump, characterized in that The method includes: Obtaining the actual engine load and actual engine speed of the target vehicle, as well as a plurality of actual oil pressure values corresponding to the actual engine load and the actual engine speed within a first preset time; the actual engine load, the actual engine speed, and the plurality of actual oil pressure values are obtained when the target vehicle is being driven by a driving user; According to the plurality of actual oil pressure values, correcting the oil pressure values in the target pressure table to obtain a corrected pressure table including corrected oil pressure values; the target pressure table is pre-stored in the electronic control unit of the target vehicle and is used to represent the correspondence relationship between the engine load, engine speed, and oil pressure value of the target vehicle; Controlling the oil pressure of the oil pump of the target vehicle according to the corrected pressure table.
2. The method according to claim 1, wherein The step of correcting the oil pressure values in the target pressure table according to the plurality of actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes: Calculating the error of the plurality of actual oil pressure values to obtain an oil pressure fluctuation value; Calculating the difference between the oil pressure values in the target pressure table and the oil pressure fluctuation value to obtain the corrected oil pressure value; Correcting the oil pressure values according to the corrected oil pressure values to obtain a corrected pressure table.
3. The method according to claim 1, characterized in that The step of correcting the oil pressure values in the target pressure table according to the plurality of actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values includes: Calculating the average value of the plurality of actual oil pressure values to obtain an oil pressure average value; Correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values.
4. The method according to claim 3, characterized in that, The step of correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values includes: In response to determining that the oil pressure average value is greater than or equal to the oil pressure safety limit value, correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values; the oil pressure safety limit value is pre-stored in the electronic control unit of the target vehicle.
5. The method according to claim 3, wherein Before correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values, the method further includes: Copying the target pressure table to obtain a pressure table to be corrected; The step of correcting the oil pressure values in the target pressure table according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values includes: Correcting the oil pressure values in the pressure table to be corrected according to the oil pressure average value to obtain a corrected pressure table including corrected oil pressure values; After a second preset time delay, correcting the target pressure table according to the corrected pressure table.
6. The method according to claim 5, wherein After delaying for a second preset time, correcting the target pressure table according to the corrected pressure table includes: After delaying for a second preset time, in response to determining that the target vehicle is in a non-operating state, correcting the target pressure table according to the corrected pressure table.
7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: According to the user information of multiple driving users, storing multiple corrected pressure tables corresponding to the multiple user information in the target vehicle; Identifying the driving user information from the multiple user information through the cab of the target vehicle; Obtaining the corrected pressure table of the driving user information; Controlling the oil pump of the target vehicle according to the corrected pressure table includes: Controlling the oil pump of the target vehicle according to the corrected pressure table of the driving user information.
8. A control device for a vehicle oil pump, characterized in that, The device includes: An acquisition unit, configured to acquire the actual engine load and actual engine speed of a target vehicle, and a plurality of actual oil pressure values corresponding to the actual engine load and the actual engine speed within a first preset time; the actual engine load, the actual engine speed, and the plurality of actual oil pressure values are acquired when the target vehicle is being driven by a driving user; A correction unit, configured to correct the oil pressure values in a target pressure table according to the plurality of actual oil pressure values to obtain a corrected pressure table including corrected oil pressure values; the target pressure table is pre-stored in an electronic control unit of the target vehicle and is used to represent the corresponding relationship between the engine load, engine speed, and oil pressure value of the target vehicle; A control unit, configured to control the oil pressure of the oil pump of the target vehicle according to the corrected pressure table.
9. A computer device, characterized in that, The computer device includes a processor and a memory: The memory is configured to store program codes and transmit the program codes to the processor; The processor is configured to execute the control method of the vehicle oil pump according to any one of claims 1-7 according to the instructions in the program codes.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is configured to store a computer program, and the computer program, when executed by a processor, is used to execute the control method of the vehicle oil pump according to any one of claims 1-7.