Inflation efficiency correction table calibration method, inflation efficiency correction method, equipment and vehicle

Abstract

The invention relates to an inflation efficiency correction table calibration method, an inflation efficiency correction method, equipment and a vehicle. The inflation efficiency correction table calibration method comprises the steps of changing environment humidity based on a preset rule in the process of performing a bench test on an engine; the inflation efficiency of the engine under different environment humidity is calculated, multiple sets of test data are obtained, and each set of test data comprises the environment humidity and the inflation efficiency; and determining inflation efficiency correction coefficients corresponding to different environment humidity according to the multiple groups of test data to obtain an inflation efficiency correction table. According to the method and the device, the corresponding inflation efficiency correction coefficients of the engine under different environment humidity can be calibrated, so that the inflation efficiency calculated under different environment humidity can be corrected, and the accuracy and the reliability of the inflation efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of engine charging efficiency calibration, and in particular to a charging efficiency correction table calibration method, a charging efficiency correction method, a device and a vehicle. Background Art

[0002] At present, in the bench calibration test of the engine, it is necessary to calibrate the charging model first, and the charging efficiency output by the charging model is the basis of all models. The inventors have noticed that when the humidity of the engine environment is too high, the actual charging efficiency of the engine will be affected. However, in the bench calibration test of the engine, the impact of humidity changes on the charging efficiency of the engine is not taken into account, which will lead to a deviation between the charging efficiency calculated by the charging model and the actual charging efficiency of the engine. If the calculation results of the charging model deviate, it will affect all tables with charging efficiency as coordinates, such as torque, ignition angle, etc. Summary of the invention

[0003] In view of the above-mentioned deficiencies or shortcomings, the present application provides a charging efficiency correction table calibration method, a charging efficiency correction method, a device and a vehicle.

[0004] According to a first aspect, the present application provides a method for calibrating an engine charging efficiency correction table. In some embodiments, the method includes:

[0005] Changing the ambient humidity based on preset rules during bench testing of the engine;

[0006] Calculate the charging efficiency of the engine under different ambient humidity to obtain multiple groups of test data, each group of test data includes ambient humidity and charging efficiency;

[0007] The charging efficiency correction coefficients corresponding to different ambient humidity are determined according to the multiple groups of test data to obtain a charging efficiency correction table.

[0008] In some embodiments, a humidity sensor is installed in the intake manifold of the engine; the ambient humidity is detected by the humidity sensor.

[0009] In some embodiments, calculating the charging efficiency of the engine at different ambient humidity includes:

[0010] Collect the intake manifold pressure, partial pressure of gas in the cylinder, charging efficiency conversion coefficient, and correction coefficient of the exhaust gas recirculation system to charging of the engine under different ambient humidity;

[0011] The charging efficiency of the engine under different ambient humidity is calculated based on the intake manifold pressure of the engine under different ambient humidity, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging.

[0012] In some embodiments, the charging efficiency of the engine under different ambient humidity is calculated by a target charging model; the target charging model is: rl_w = (psrg_w-pbrintc_w)*fupsrli_w*rfdsorgicor_ua;

[0013] Among them, rl_w represents the calculated charging efficiency; psrg_w represents the intake manifold pressure; pbrintc_w represents the partial pressure of the resident gas in the cylinder; fupsrli_w represents the conversion ratio coefficient between the theoretical charging efficiency and the actual charging efficiency; rfdsorgicor_ua represents the correction coefficient of the exhaust gas recirculation system for charging.

[0014] In some embodiments, the charging efficiency correction table includes multiple ambient humidities and charging efficiency correction coefficients corresponding to each ambient humidity; after obtaining the charging efficiency correction table, the method further includes:

[0015] Conduct new bench tests on the engine to verify the charging efficiency correction factor corresponding to each ambient humidity in the charging efficiency correction table;

[0016] Recalibrate the charging efficiency correction factor that fails verification.

[0017] In some embodiments, determining the charging efficiency correction coefficient corresponding to different ambient humidity according to the multiple groups of test data includes:

[0018] A charging efficiency correction model is constructed according to the multiple groups of experimental data;

[0019] The charging efficiency correction coefficient corresponding to different ambient humidity is determined based on the charging efficiency correction model.

[0020] According to a second aspect, the present application provides a method for correcting engine charging efficiency. In some embodiments, the method includes:

[0021] Collect the current intake manifold pressure of the engine, partial pressure of the gas in the cylinder, charging efficiency conversion coefficient, correction coefficient of the exhaust gas recirculation system for charging and ambient humidity;

[0022] The initial charging efficiency is calculated based on the intake manifold pressure, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging;

[0023] Determine a charging efficiency correction coefficient corresponding to the ambient humidity based on a target charging efficiency correction table;

[0024] The initial charging efficiency is corrected according to the charging efficiency correction factor.

[0025] In some embodiments, the target charging efficiency correction table is pre-calibrated by the engine charging efficiency correction table calibration method provided in any of the above embodiments.

[0026] According to a third aspect, the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the engine charging efficiency correction table calibration method or the engine charging efficiency correction method provided in any of the above-mentioned embodiments are implemented.

[0027] According to a fourth aspect, the present application provides a vehicle, which includes the computer device provided by any of the above embodiments.

[0028] The above-mentioned embodiment of the present application can calibrate the charging efficiency correction coefficient corresponding to the engine under different ambient humidity. Specifically, the ambient humidity is changed based on preset rules during the bench test of the engine, and then the charging efficiency of the engine under different ambient humidity is calculated to obtain multiple groups of test data, each group of test data includes ambient humidity and charging efficiency, and finally the charging efficiency correction coefficient corresponding to different ambient humidity is determined according to the multiple groups of test data to obtain the charging efficiency correction table. After obtaining the charging efficiency correction table, it can be used to correct the charging efficiency of the engine calculated under different ambient humidity to improve the accuracy and reliability of the charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic flow chart of a method for calibrating an engine charging efficiency correction table according to one or more embodiments of the present application;

[0030] Figure 2 A charging efficiency calculation diagram provided by the present application according to one or more embodiments;

[0031] Figure 3 A charging efficiency correction calculation diagram provided by the present application according to one or more embodiments;

[0032] Figure 4 A schematic flow chart of an engine charging efficiency correction method provided by the present application according to one or more embodiments;

[0033] Figure 5 A structural block diagram of a device for calibrating an engine charging efficiency correction table according to one or more embodiments of the present application;

[0034] Figure 6 A structural block diagram of a device for calibrating an engine charging efficiency correction table according to one or more embodiments of the present application;

[0035] Figure 7This is a diagram of the internal structure of a computer device provided by the present application according to one or more embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0037] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0038] In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0039] In view of the shortcomings or defects of the prior art, the present application provides a method for calibrating an engine charging efficiency correction table. In some embodiments, the method includes: Figure 1 The steps shown are described below using the method applied to a calibration device (which may be a computer device, such as a computer, a server, etc.) as an example.

[0040] S110: Changing the ambient humidity based on a preset rule during a bench test of the engine.

[0041] The engine can be a naturally aspirated engine. During the bench test of the engine, the calibration equipment controls the change of the ambient humidity in the bench laboratory based on preset rules (such as the humidity gradually increasing or decreasing, etc.), and collects the relevant parameters corresponding to the engine at different ambient humidities for calculating the charging efficiency. In this field, the charging efficiency is also called the charging coefficient, which refers to the ratio of the mass of fresh air actually inhaled into the cylinder of the engine in each working cycle of the engine to the theoretical mass of air that fills the working volume of the cylinder under the intake duct state. The charging efficiency reflects the degree of perfection of the intake process and is one of the important indicators for measuring the intake performance of the engine. The calibration of the charging efficiency is the core part of the engine calibration process. Engine calibration refers to the calibration of various basic performances of the engine on the engine bench.

[0042] The specific content of the relevant parameters used to calculate the inflation efficiency depends on the inflation model actually used. In some embodiments, see Figure 2 , Figure 2 The various parameters required for a charging model to calculate the charging efficiency are shown. The charging model needs to calculate the charging efficiency of the engine based on the intake manifold pressure, the partial pressure of the gas resident in the cylinder, the rl-ps conversion coefficient (i.e., the conversion ratio coefficient between the theoretical charging efficiency and the actual charging efficiency), and the correction coefficient of EGR (i.e., the correction coefficient of the exhaust gas recirculation system for charging). Among them, the intake manifold pressure is calculated by the voltage measured by the intake temperature sensor, the partial pressure of the gas resident in the cylinder is calculated by the exhaust back pressure, the exhaust temperature, the intake valve opening angle, the exhaust valve closing angle, the pressure ratio of the intake pressure to the back pressure, the constant of the relative charge converted to the mass flow, the intake valve temperature and the intake valve front temperature, the rl-ps conversion coefficient is calculated by the intake valve closing angle, the intake valve temperature and the intake valve front temperature, and the intake manifold pressure, the partial pressure of the gas resident in the cylinder and the rl-ps conversion coefficient can be calculated by the existing or future possible calculation methods. Therefore, in this embodiment, the relevant parameters used to calculate the charging efficiency include the voltage measured by the intake temperature sensor, the exhaust back pressure, the exhaust temperature, the intake valve opening angle, the exhaust valve closing angle, the pressure ratio of the intake pressure to the back pressure, the constant for converting the relative charge into the mass flow rate, the intake valve temperature, the temperature before the intake valve, the intake valve closing angle, and the EGR correction coefficient.

[0043] S120: Calculate the charging efficiency of the engine under different ambient humidity conditions to obtain multiple groups of test data.

[0044] The calibration equipment will calculate the charging efficiency of the engine under different ambient humidity through a pre-specified charging model. Each set of test data includes ambient humidity and charging efficiency (referring to the charging efficiency calculated by the charging model, which can also be called theoretical charging efficiency), and also includes actual charging efficiency. The ambient humidity in different sets of test data is different. The number of groups of test data is not particularly limited in this embodiment. Generally, the more groups of test data there are, the more accurate the calibration of the charging efficiency correction factor corresponding to different ambient humidity will be.

[0045] S130: Determine the inflation efficiency correction coefficients corresponding to different ambient humidity according to the multiple groups of test data, and obtain an inflation efficiency correction table.

[0046] In some embodiments, the operation of determining the inflation efficiency correction coefficients corresponding to different ambient humidities according to the multiple groups of test data may be to construct an inflation efficiency correction model according to the multiple groups of test data; and then determine the inflation efficiency correction coefficients corresponding to different ambient humidities based on the inflation efficiency correction model. The inflation efficiency correction model may be a mathematical model (such as a mathematical expression), wherein each group of test data may be used to calculate the inflation efficiency correction coefficients corresponding to each ambient humidity. For example, assuming that a certain group of test data includes an ambient humidity of 40%, a theoretical inflation efficiency of 85%, and an actual inflation efficiency of 80%, the inflation efficiency correction coefficient corresponding to the ambient humidity of 40% is 80% divided by 85% (such as 0.9412). Then, a mathematical model is established based on the inflation efficiency correction coefficients corresponding to each ambient humidity to describe the relationship between the ambient humidity and the inflation efficiency correction coefficient. After obtaining the inflation efficiency correction model, the model can be used to determine the inflation efficiency correction coefficient corresponding to each ambient humidity.

[0047] The charging efficiency correction table includes multiple charging efficiency correction coefficients corresponding to the ambient humidity. For example, as shown in Table 1, Table 1:

[0048] Ambient humidity <![CDATA[H 1 ]]> <![CDATA[H 2 ]]> <![CDATA[H 3 ]]> <![CDATA[H 4 ]]> <![CDATA[H n ]]> Correction factor <![CDATA[P 1 ]]> <![CDATA[P 2 ]]> <![CDATA[P 3 ]]> <![CDATA[P 4 ]]> <![CDATA[P n ]]>

[0049] In this embodiment, by calculating the charging efficiency of the engine under different ambient humidity, the corresponding charging efficiency correction coefficient of the engine under different ambient humidity can be calibrated. Therefore, when calculating the charging efficiency of the engine, the charging efficiency can be modified by the charging efficiency correction coefficient that matches the real-time ambient humidity, thereby reducing or avoiding the impact of ambient humidity on the charging efficiency.

[0050] In some embodiments, a humidity sensor is installed in the intake manifold of the engine; the ambient humidity in each set of test data is detected by the humidity sensor.

[0051] Since the intake manifold is directly connected to the engine, the humidity measured here can directly reflect the actual air humidity entering the engine. Therefore, this embodiment installs a humidity sensor in the intake manifold, and uses the humidity monitored by the humidity sensor as the ambient humidity. Compared with installing the humidity sensor in other places (such as other locations in the engine compartment, the front bumper outside the vehicle, the dashboard inside the vehicle, etc.), more accurate ambient humidity data can be obtained.

[0052] In some embodiments, calculating the charging efficiency of the engine at different ambient humidity includes: collecting the intake manifold pressure of the engine at different ambient humidity, the partial pressure of the gas retained in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging; calculating the charging efficiency of the engine at different ambient humidity according to the intake manifold pressure of the engine at different ambient humidity, the partial pressure of the gas retained in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging.

[0053] The charging efficiency of the engine under different ambient humidity is calculated by the target charging model; the target charging model is: rl_w = (psrg_w-pbrintc_w)*fupsrli_w*rfdsorgicor_ua;

[0054] Among them, rl_w represents the calculated charging efficiency; psrg_w represents the intake manifold pressure; pbrintc_w represents the partial pressure of the resident gas in the cylinder; fupsrli_w represents the conversion ratio coefficient between the theoretical charging efficiency and the actual charging efficiency; rfdsorgicor_ua represents the correction coefficient of the exhaust gas recirculation system for charging.

[0055] In some embodiments, the charging efficiency correction table includes multiple ambient humidities and charging efficiency correction coefficients corresponding to each ambient humidity; accordingly, after obtaining the charging efficiency correction table, the method also includes: performing a new bench test on the engine to verify the charging efficiency correction coefficients corresponding to each ambient humidity in the charging efficiency correction table; and recalibrating the charging efficiency correction coefficients that have not passed the verification.

[0056] In order to improve the accuracy and reliability of the charging efficiency correction coefficient in the correction table, a new bench test can be performed on the engine (or other engines) (the relevant settings of the bench test can be the same as or partially different from the previous bench test), and the correction table calibration process introduced in the previous embodiment is executed in the bench test, so that it can be determined whether the charging efficiency correction coefficient corresponding to each ambient humidity calibrated previously meets the preset accuracy requirements (for example, in different tests, the difference in the charging efficiency correction coefficient corresponding to the same ambient humidity does not exceed 5%, etc.). If the preset accuracy requirements are not met, the relevant charging efficiency correction coefficient in the correction table is updated to the new charging efficiency correction coefficient calculated in the new bench test.

[0057] Based on the same inventive concept, the present application also provides a method for correcting engine charging efficiency. In some embodiments, Figure 4 As shown, the method includes:

[0058] S210: collecting the current intake manifold pressure of the engine, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, the correction coefficient of the exhaust gas recirculation system for charging, and the ambient humidity;

[0059] S220: Calculating the initial charging efficiency according to the intake manifold pressure, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging;

[0060] S230: determining a charging efficiency correction coefficient corresponding to the ambient humidity based on a target charging efficiency correction table;

[0061] S240: Correcting the initial charging efficiency according to the charging efficiency correction coefficient.

[0062] The engine charging efficiency correction method can be applied to a charging efficiency correction device (such as a vehicle computer or a vehicle-mounted device in a vehicle). In this embodiment, the target charging efficiency correction table is a pre-calibrated table, and the charging efficiency correction device can query the charging efficiency correction coefficient corresponding to the current ambient humidity in the target charging efficiency correction table as the target correction coefficient, and then use the target correction coefficient to correct the initial charging efficiency, for example, multiplying the initial charging efficiency by the target correction coefficient to obtain the final charging efficiency.

[0063] In some embodiments, the target charging efficiency correction table is pre-calibrated by the engine charging efficiency correction table calibration method provided in any of the above embodiments. The specific calibration process can be found in the introduction of the engine charging efficiency correction table calibration method in the above embodiments, which will not be elaborated here.

[0064] It should also be noted that, with respect to the various steps included in the engine charging efficiency correction table calibration method or the engine charging efficiency correction method provided in any of the above embodiments, unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of these steps can include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0065] Based on the same inventive concept, the present application also provides a device for calibrating an engine charging efficiency correction table. Figure 5 As shown, the engine charging efficiency correction table calibration device includes the following modules:

[0066] A humidity adjustment module 110, for changing the ambient humidity based on a preset rule during a bench test of the engine;

[0067] The data acquisition module 120 is used to calculate the charging efficiency of the engine under different ambient humidity conditions to obtain multiple groups of test data, each group of test data including ambient humidity and charging efficiency;

[0068] The calibration module 130 is used to determine the charging efficiency correction coefficients corresponding to different ambient humidity according to the multiple groups of test data, and obtain a charging efficiency correction table.

[0069] The specific definition of the calibration device for the engine charging efficiency correction table can be found in the definition of the calibration method for the engine charging efficiency correction table mentioned above, which will not be repeated here. Each module in the above-mentioned calibration device for the engine charging efficiency correction table can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0070] Based on the same inventive concept, the present application also provides an engine charging efficiency correction device. In some embodiments, Figure 6 As shown, the device includes the following modules:

[0071] The acquisition module 210 is used to collect the current intake manifold pressure of the engine, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, the correction coefficient of the exhaust gas recirculation system for charging, and the ambient humidity;

[0072] A charging efficiency calculation module 220 is used to calculate the initial charging efficiency according to the intake manifold pressure, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging;

[0073] A correction coefficient determination module 230, for determining a charging efficiency correction coefficient corresponding to the ambient humidity based on a target charging efficiency correction table;

[0074] The charging efficiency correction module 240 is used to correct the initial charging efficiency according to the charging efficiency correction coefficient.

[0075] The specific definition of the engine charging efficiency correction device can be found in the definition of the engine charging efficiency correction method mentioned above, which will not be repeated here. Each module in the above-mentioned engine charging efficiency correction device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0076] The present application also provides a computer device. In some embodiments, the computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the engine charging efficiency correction table calibration method or the engine charging efficiency correction method provided in any of the above embodiments can be implemented.

[0077] Furthermore, in some embodiments, the internal structure diagram of the computer device may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as environmental humidity. The specific stored data can also refer to the definition in the above method embodiment. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an engine charging efficiency correction table calibration method or an engine charging efficiency correction method is implemented.

[0078] Those skilled in the art will understand that Figure 7The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0079] The present application also provides a computer-readable storage medium. In some embodiments, a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the steps of the engine charging efficiency correction table calibration method or the engine charging efficiency correction method provided in any of the above embodiments are implemented.

[0080] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0081] Those skilled in the art can understand that all or part of the processes in the above method embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus), direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0082] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for calibrating an engine charging efficiency correction table, characterized in that: The method comprises: changing the ambient humidity based on a preset rule during a bench test of the engine; Calculating the charging efficiency of the engine under different ambient humidity to obtain multiple groups of test data, each group of test data including ambient humidity and charging efficiency; The charging efficiency correction coefficients corresponding to different ambient humidity are determined according to the multiple groups of test data to obtain a charging efficiency correction table.

2. The method according to claim 1, characterized in that A humidity sensor is installed in the intake manifold of the engine; the ambient humidity is detected by the humidity sensor.

3. The method according to claim 1 or 2, characterized in that Calculating the charging efficiency of the engine at different ambient humidity, including: Collecting the intake manifold pressure, the partial pressure of the gas in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging of the engine under different ambient humidity; The charging efficiency of the engine under different ambient humidity is calculated according to the intake manifold pressure of the engine under different ambient humidity, the partial pressure of the gas resident in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system to the charging.

4. The method according to claim 3, characterized in that The charging efficiency of the engine under different ambient humidity is calculated by a target charging model; the target charging model is: rl_w = (psrg_w-pbrintc_w)*fupsrli_w*rfdsorgicor_ua; Among them, rl_w represents the calculated charging efficiency; psrg_w represents the intake manifold pressure; pbrintc_w represents the partial pressure of the resident gas in the cylinder; fupsrli_w represents the conversion ratio coefficient between the theoretical charging efficiency and the actual charging efficiency; rfdsorgicor_ua represents the correction coefficient of the exhaust gas recirculation system for charging.

5. The method according to claim 1, characterized in that The charging efficiency correction table includes a plurality of ambient humidities and a charging efficiency correction coefficient corresponding to each ambient humidity; After obtaining the charging efficiency correction table, the method further includes: Conduct a new bench test on the engine to verify the charging efficiency correction coefficient corresponding to each ambient humidity in the charging efficiency correction table; Recalibrate the charging efficiency correction factor that fails verification.

6. The method according to claim 1, characterized in that Determining the charging efficiency correction coefficient corresponding to different ambient humidity according to the plurality of test data includes: Constructing a charging efficiency correction model according to the multiple groups of experimental data; The charging efficiency correction coefficient corresponding to different ambient humidity is determined based on the charging efficiency correction model.

7. A method for correcting engine charging efficiency, characterized in that: The method comprises: Collect the current intake manifold pressure of the engine, partial pressure of the gas in the cylinder, charging efficiency conversion coefficient, correction coefficient of the exhaust gas recirculation system for charging and ambient humidity; Calculating the initial charging efficiency according to the intake manifold pressure, the partial pressure of the gas resident in the cylinder, the charging efficiency conversion coefficient, and the correction coefficient of the exhaust gas recirculation system for charging; determining a charging efficiency correction coefficient corresponding to the ambient humidity based on a target charging efficiency correction table; the target charging efficiency correction table is pre-calibrated by the method according to any one of claims 1 to 6; The initial charging efficiency is corrected according to the charging efficiency correction coefficient.

8. The method according to claim 7, characterized in that The target charging efficiency correction table is pre-calibrated by the method according to any one of claims 1-6.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A vehicle, characterized in that: The vehicle comprises the computer device of claim 9.

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