Torque correction method and device for gear shifting process, electronic equipment and storage medium

Abstract

The application discloses a torque correction method and device for a gear shifting process, electronic equipment and a storage medium, wherein the torque correction method for the gear shifting process is applied to an automatic transmission, and the torque correction method for the gear shifting process comprises the following steps: in the case that the automatic transmission is shifted, determining a current road slope according to a vehicle weight, and determining a current temperature of the automatic transmission; determining a correlation relationship of the vehicle weight, the current road slope and the current temperature for correcting a torque slope of the automatic transmission; and correcting the torque slope based on the correlation relationship. According to the method, the torque slope of the gear shifting process is corrected according to the vehicle weight, the current road slope and the current temperature, so that the automatic transmission can be quickly and smoothly shifted under different working conditions, and power connection is better, and the shifting requirement under complex working conditions can be met.

Description

Technical Field

[0001] This application relates to the field of gearbox technology, and in particular to a torque correction method, device, electronic device, and storage medium for the gear shifting process. Background Technology

[0002] The AMT (Automated Mechanical Transmission) technology in this field does not correct for torque control during gear shifting. Therefore, during gear shifting on slopes or when the vehicle speed changes rapidly, problems such as power interruption, difficulty in power connection, frequent gear shifting, and insufficient power can easily occur, causing the AMT to be unable to meet the shifting needs of complex operating conditions. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, the first objective of this invention is to propose a torque correction method for the gear shifting process, which corrects the torque slope of the gear shifting process based on vehicle weight, current road slope, and current temperature, enabling the automatic transmission to shift gears quickly and smoothly under different operating conditions, with better power delivery, and meeting the shifting needs of complex operating conditions.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to provide an electronic device.

[0006] The fourth objective of this invention is to provide a torque correction device for the gear shifting process.

[0007] To achieve the above objectives, a torque correction method for a gear shifting process is proposed according to a first aspect of the present invention, applied to an automatic transmission. The method includes: determining the current road slope and the current temperature of the automatic transmission based on the vehicle weight when the automatic transmission is shifting; determining the correlation between the vehicle weight, the current road slope, and the current temperature and the torque slope of the automatic transmission; and correcting the torque slope based on the correlation.

[0008] According to the torque correction method for the shifting process of the present invention, when the automatic transmission shifts gears, the current road slope and the current temperature are determined, and the torque slope is corrected according to the correlation between vehicle weight, current road slope and current temperature and the torque slope of the shifting process. This makes the automatic transmission shift gears quickly and smoothly under different operating conditions, with better power connection, and can meet the shifting needs of complex operating conditions.

[0009] According to one embodiment of the present invention, determining the correlation between vehicle weight, current road slope, and current temperature on the torque slope of an automatic transmission includes: determining the correction magnitude of vehicle weight, current road slope, and current temperature on the torque slope respectively; and determining the product of the correction magnitude corresponding to vehicle weight, the correction magnitude corresponding to current road slope, and the correction magnitude corresponding to current temperature as the correlation.

[0010] According to one embodiment of the present invention, the correction range corresponding to the vehicle weight, the correction range corresponding to the current road slope, and the correction range corresponding to the current temperature are determined based on the current operating conditions of the vehicle.

[0011] According to one embodiment of the present invention, before determining the current road slope based on the vehicle weight, the method further includes: determining the vehicle weight based on the road slope, rolling resistance, air resistance, acceleration resistance, and vehicle driving force while the vehicle acceleration remains stable.

[0012] According to one embodiment of the present invention, the vehicle weight is calculated according to the following formula: in, Gf is the driving force of the vehicle, and Gf is the rolling resistance. For air resistance, To increase resistance, T tq For engine torque, i g For the transmission ratio, i0 is the gear ratio of the main reducer, and η is the gear ratio of the gearbox. t Let r be the mechanical efficiency of the transmission system, g be the rolling radius of the wheel, G be the vehicle weight, f be the rolling resistance coefficient, and C be the rolling resistance coefficient. d U is the air resistance coefficient, A is the vehicle's frontal area, and u is the air resistance coefficient. a Let be the vehicle's speed, i be the road gradient, δ be the vehicle's rotational mass conversion factor, and m be the vehicle's mass. It is acceleration.

[0013] According to one embodiment of the present invention, determining the current road surface slope based on vehicle weight includes: determining the current road surface slope based on vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.

[0014] According to one embodiment of the present invention, determining the current temperature of an automatic transmission includes: determining the current temperature based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.

[0015] To achieve the above objectives, a computer-readable storage medium is provided according to a second aspect of the present invention, having stored thereon a torque correction program for a gear shifting process, which, when executed by a processor, implements the torque correction method for a gear shifting process of any of the foregoing embodiments.

[0016] According to the computer-readable storage medium of the present invention, by executing the torque correction method of the above-described shifting process through a computer program, the torque slope of the shifting process is corrected according to the vehicle weight, the current road slope and the current temperature, so that the automatic transmission shifts quickly and smoothly under different operating conditions and the power connection is better, which can meet the shifting needs of complex operating conditions.

[0017] To achieve the above objectives, an electronic device is provided according to a third aspect of the present invention, including a memory, a processor, and a torque correction program for a shifting process stored in the memory and executable on the processor. When the processor executes the torque correction program for the shifting process, it implements the torque correction method for the shifting process of any of the foregoing embodiments.

[0018] According to the electronic device of the present invention, the processor executes the program of the torque correction method of the above-mentioned shifting process, and corrects the torque slope of the shifting process according to the vehicle weight, the current road slope and the current temperature, so that the automatic transmission shifts quickly and smoothly under different working conditions and the power connection is better, which can meet the shifting needs of complex working conditions.

[0019] To achieve the above objectives, a torque correction device for the shifting process is provided according to a fourth aspect of the present invention, applied to an automatic transmission. The device includes: a first determining module for determining the current road slope based on the vehicle weight when the automatic transmission shifts gears; a second determining module for determining the current temperature of the automatic transmission when the automatic transmission shifts gears; a third determining module for determining the correlation between the vehicle weight, the current road slope, and the current temperature and the torque slope correction of the automatic transmission; and a correction module for correcting the torque slope based on the correlation.

[0020] According to an embodiment of the present invention, the torque correction device for the shifting process determines the current road slope through a first determining module, the current temperature through a second determining module, and the correlation between vehicle weight, current road slope, and current temperature and the torque slope correction of the shifting process through a third determining module during automatic transmission shifting. The correction module corrects the torque slope according to the correlation, so that the automatic transmission shifts quickly and smoothly under different operating conditions, with better power connection, and can meet the shifting needs of complex operating conditions.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic flowchart of a torque correction method for a gear shifting process according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic flowchart of a torque correction method for a gear shifting process according to a specific embodiment of the present invention;

[0024] Figure 3 This is a system schematic diagram of an electronic device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the torque correction device for the shifting process according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the torque correction device for the shifting process according to another embodiment of the present invention. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The torque correction method, apparatus, electronic device, and storage medium for the gear shifting process according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic flowchart illustrating a torque correction method for a gear shifting process according to an embodiment of the present invention. The torque correction method for the gear shifting process is applied to an automatic transmission, such as... Figure 1 As shown, the torque correction method during gear shifting includes:

[0030] S101 determines the current road slope and the current temperature of the automatic transmission based on the vehicle's weight when the automatic transmission is shifting gears.

[0031] Specifically, different road slopes and different current temperatures require different shift times. Therefore, during automatic transmission shifting, it is necessary to determine the current road slope and current temperature based on the vehicle weight so that the torque during the shifting process can be accurately corrected based on the road slope and current temperature.

[0032] It should be noted that the current road slope is not limited to being determined during gear shifting. The current road slope can also be calculated in real time and then used as the current road slope when the automatic transmission shifts gears.

[0033] In some embodiments, before determining the current road surface slope based on the vehicle weight, the method further includes determining the vehicle weight based on the road slope, rolling resistance, air resistance, acceleration resistance, and vehicle driving force, while keeping the vehicle acceleration stable.

[0034] Specifically, because the load on a vehicle during operation is uncertain, its weight is unknown and needs to be determined through calculation. During initial acceleration and steady acceleration while maintaining the same gear, the vehicle's acceleration remains constant, simplifying the weight calculation process. Road gradient can be obtained using the gradient sensor built into the TCU (Transmission Control Unit). Rolling resistance and air resistance can be calculated or obtained through vehicle coasting experiments. Acceleration resistance can be calculated based on acceleration, and vehicle driving force can be calculated based on vehicle parameters.

[0035] It's important to note that the slope sensor's detection of road slope during automatic transmission shifts is inaccurate. Therefore, during automatic transmission shifts, the current road slope must be calculated based on the vehicle's weight; the slope value detected by the slope sensor cannot be directly used as the current road slope. When calculating the road slope in real-time based on vehicle weight, the vehicle weight is calculated while acceleration remains stable. Therefore, when the vehicle starts moving, its weight is unknown, and in this case, it is assumed to be half-loaded.

[0036] In the above embodiments, calculating the vehicle weight while the acceleration remains stable not only simplifies the calculation process but also yields a more accurate vehicle weight, thereby making the current road slope and torque gradient obtained based on the vehicle weight more accurate.

[0037] Furthermore, in some embodiments, the vehicle weight is calculated according to the following formula (1):

[0038]

[0039] in, Gf is the driving force of the vehicle, and Gf is the rolling resistance. For air resistance, To increase resistance, T tq For engine torque, i g For the transmission ratio, i0 is the gear ratio of the main reducer, and η is the gear ratio of the gearbox. t Let r be the mechanical efficiency of the transmission system, g be the rolling radius of the wheel, G be the vehicle weight, f be the rolling resistance coefficient, and C be the rolling resistance coefficient. d U is the air resistance coefficient, A is the vehicle's frontal area, and u is the air resistance coefficient. a Let be the vehicle's speed, i be the road gradient, δ be the vehicle's rotational mass conversion factor, and m be the vehicle's mass. It is acceleration.

[0040] It is understandable that the vehicle weight is the product of the vehicle's mass and gravitational acceleration. In formula (1), all parameters except the vehicle weight and mass are known. Therefore, the vehicle weight can be calculated according to formula (1).

[0041] It should be noted that although the rolling resistance coefficient will vary depending on the road surface conditions, the variation is so small that it can be ignored.

[0042] In some embodiments, determining the current road surface slope based on vehicle weight includes: determining the current road surface slope based on vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.

[0043] In other words, the current road surface slope can be calculated using formula (1). In formula (1), all parameters except the current road surface slope are known. Therefore, the current road surface slope can be calculated using formula (1).

[0044] In some embodiments, determining the current temperature of the automatic transmission includes determining the current temperature based on the current ambient temperature, the temperature field in the engine compartment, and the clutch temperature.

[0045] Specifically, the temperature field of the engine compartment is the collection of temperatures at various locations within the engine compartment. The current ambient temperature, the engine compartment temperature field, and the clutch temperature can be input into the automatic transmission's temperature model, which then outputs the current temperature.

[0046] It should be noted that the temperature model for automatic transmissions can adopt the temperature model from related technologies, and there are no specific restrictions here.

[0047] S102, determine the correlation between vehicle weight, current road slope, and current temperature on the torque slope correction of the automatic transmission.

[0048] Specifically, the torque slope affects the shift time of an automatic transmission; the larger the absolute value of the torque slope, the shorter the shift time. By adjusting the torque slope during the shift process based on vehicle weight, current road gradient, and current temperature, the shift time is adjusted, resulting in faster and smoother shifts and better power delivery from the automatic transmission.

[0049] In some embodiments, determining the correlation between vehicle weight, current road slope, and current temperature on the torque slope correction of the automatic transmission includes: determining the correction magnitude of vehicle weight, current road slope, and current temperature on the torque slope respectively; and determining the product of the correction magnitude corresponding to vehicle weight, the correction magnitude corresponding to current road slope, and the correction magnitude corresponding to current temperature as the correlation.

[0050] Specifically, the first correction range corresponding to the vehicle weight, the second correction range corresponding to the current road slope, and the third correction range corresponding to the current temperature are determined. Then, the product of the first correction range, the second correction range, and the third correction range is calculated, and the product of the three correction ranges is the correlation.

[0051] For example, if the first adjustment is 110%, the second is 150%, and the third is 130%, then the correlation is 110% * 150% * 130% = 214.5%; if the first adjustment is 110%, the second is 50%, and the third is 130%, then the correlation is 110% * 50% * 130% = 71.5%.

[0052] In some embodiments, the correction range corresponding to vehicle weight, the correction range corresponding to current road slope, and the correction range corresponding to current temperature are determined based on the vehicle's current operating conditions.

[0053] Specifically, the correction ranges corresponding to vehicle weight, current road slope, and current temperature need to be determined based on the vehicle's current operating conditions. For example, if the vehicle is going uphill, its torque is significantly affected by the current road slope; the steeper the slope, the greater the torque required. Therefore, when going uphill, the second correction range needs to increase with the slope to quickly increase torque and achieve rapid gear shifting. To avoid excessively fast shifting, the first correction range corresponding to vehicle weight can be appropriately reduced or remain unchanged as vehicle weight increases, and the third correction range corresponding to current temperature can also remain unchanged. If the vehicle is traveling on a flat road with a constant slope, its torque is primarily affected by its weight. In this case, the first correction range increases with weight to achieve rapid gear shifting. Vehicle torque is also affected by current temperature, as lower temperatures increase fluid viscosity; therefore, the third correction range decreases as the current temperature decreases.

[0054] S103, corrects the torque slope based on the correlation.

[0055] Specifically, by multiplying the correlation with the torque slope, a corrected torque slope can be obtained. The automatic transmission shifts gears based on the corrected torque slope, thereby improving shift time.

[0056] For example, if the torque slope is 2 and the correlation is 200%, then the corrected torque slope is 200%*2=4; if the torque slope is -2 and the correlation is 200%, then the corrected torque slope is 200%*(-2)=-4, which allows the automatic transmission to quickly reach the target torque, thereby achieving rapid gear shifting.

[0057] In the above embodiments, when the automatic transmission shifts gears, the torque slope of the shifting process is corrected according to the vehicle weight, the current road slope and the current temperature. Without affecting the shifting quality on flat roads, the automatic transmission shifts gears quickly and smoothly under different operating conditions, and the power connection is better, which can meet the shifting needs of complex operating conditions.

[0058] In one alternative implementation, the torque slope includes at least one of the slope of the torque reduction process and the slope of the torque increase process.

[0059] It is understandable that the gear shifting process includes a torque reduction process and a torque increase process. Modifying at least one of the slopes of the torque reduction process and the torque increase process will affect the gear shifting time.

[0060] The technical solution of this application is further described in detail below with reference to specific implementation methods:

[0061] like Figure 2 As shown, the torque correction method during gear shifting includes:

[0062] S201, while the vehicle's acceleration remains stable, calculate the vehicle weight based on road gradient, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.

[0063] S202 calculates the current road slope based on vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force when the automatic transmission shifts gears, and inputs the current ambient temperature, engine compartment temperature field, and clutch temperature into the automatic transmission temperature model to obtain the current temperature.

[0064] S203, determine the first correction magnitude of vehicle weight to torque slope, the second correction magnitude of current road slope to torque slope, and the third correction magnitude of current temperature to torque slope.

[0065] S204, determine the product of the first correction magnitude, the second correction magnitude, and the third correction magnitude as a correlation.

[0066] S205, corrects the torque slope based on the correlation.

[0067] In the above embodiments, when the automatic transmission shifts gears, the torque slope of the shifting process is corrected according to the vehicle weight, the current road slope and the current temperature. Without affecting the shifting quality on flat roads, the automatic transmission shifts gears quickly and smoothly under different operating conditions, and the power connection is better, which can meet the shifting needs of complex operating conditions.

[0068] In summary, the torque correction method for the shifting process according to the embodiments of the present invention determines the current road slope and current temperature when the automatic transmission shifts gears, and corrects the torque slope of the shifting process based on the vehicle weight, current road slope and current temperature, so that the automatic transmission shifts gears quickly and smoothly under different operating conditions, and the power connection is better, which can meet the shifting needs of complex operating conditions.

[0069] Corresponding to the above embodiments, embodiments of the present invention also provide a computer-readable storage medium storing a torque correction program for a gear shifting process, which, when executed by a processor, implements the torque correction method for a gear shifting process of any of the foregoing embodiments.

[0070] According to the computer-readable storage medium of the present invention, by executing the torque correction method of the above-described shifting process through a computer program, the torque slope of the shifting process is corrected according to the vehicle weight, the current road slope and the current temperature, so that the automatic transmission shifts quickly and smoothly under different operating conditions and the power connection is better, which can meet the shifting needs of complex operating conditions.

[0071] Corresponding to the above embodiments, embodiments of the present invention also provide an electronic device. For example... Figure 3 As shown, the electronic device 100 includes a memory 110, a processor 120, and a torque correction program for the shifting process stored in the memory 110 and executable on the processor 120. When the processor 120 executes the torque correction program for the shifting process, it implements the torque correction method for the shifting process of any of the aforementioned embodiments.

[0072] According to the electronic device of the present invention, the processor executes the program of the torque correction method of the above-mentioned shifting process, and corrects the torque slope of the shifting process according to the vehicle weight, the current road slope and the current temperature, so that the automatic transmission shifts quickly and smoothly under different working conditions and the power connection is better, which can meet the shifting needs of complex working conditions.

[0073] Corresponding to the above embodiments, embodiments of the present invention also provide a torque correction device for the shifting process, applied to an automatic transmission. For example... Figure 4 As shown, the torque correction device for the gear shifting process includes: a first determining module 10, a second determining module 20, a third determining module 30, and a correction module 40.

[0074] The first determining module 10 is used to determine the current road slope based on the vehicle weight when the automatic transmission is shifting gears; the second determining module 20 is used to determine the current temperature of the automatic transmission when the automatic transmission is shifting gears; the third determining module 30 is used to determine the correlation between the vehicle weight, the current road slope, and the current temperature and the torque slope of the automatic transmission; and the correction module 40 is used to correct the torque slope based on the correlation.

[0075] In some embodiments, the third determining module 30 is further configured to: determine the correction magnitude of the vehicle weight, the current road slope, and the current temperature to the torque slope respectively; and determine the product of the correction magnitude corresponding to the vehicle weight, the correction magnitude corresponding to the current road slope, and the correction magnitude corresponding to the current temperature as a correlation relationship.

[0076] In some embodiments, the correction range corresponding to vehicle weight, the correction range corresponding to current road slope, and the correction range corresponding to current temperature are determined based on the vehicle's current operating conditions.

[0077] In some embodiments, such as Figure 5 As shown, the device also includes a fourth determining module 50, which is used to determine the vehicle weight based on the road slope, rolling resistance, air resistance, acceleration resistance and vehicle driving force, while the vehicle acceleration remains stable, before determining the current road slope based on the vehicle weight.

[0078] In some embodiments, the vehicle weight is calculated according to the following formula: in, Gf is the driving force of the vehicle, and Gf is the rolling resistance. For air resistance, To increase resistance, T tq For engine torque, i g For the transmission ratio, i0 is the gear ratio of the main reducer, and η is the gear ratio of the gearbox. t Let r be the mechanical efficiency of the transmission system, g be the rolling radius of the wheel, G be the vehicle weight, f be the rolling resistance coefficient, and C be the rolling resistance coefficient. d U is the air resistance coefficient, A is the vehicle's frontal area, and u is the air resistance coefficient. a Let be the vehicle's speed, i be the road gradient, δ be the vehicle's rotational mass conversion factor, and m be the vehicle's mass. It is acceleration.

[0079] In some embodiments, the first determining module 10 is further configured to: determine the current road surface slope based on vehicle weight, rolling resistance, air resistance, acceleration resistance and vehicle driving force.

[0080] In some embodiments, the second determining module 20 is further configured to: determine the current temperature based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.

[0081] It should be noted that the specific implementation of the torque correction device in the shifting process of the present invention corresponds one-to-one with the specific implementation of the torque correction method in the shifting process of the aforementioned present invention, and will not be repeated here.

[0082] According to an embodiment of the present invention, the torque correction device for the shifting process determines the current road slope through a first determining module, the current temperature through a second determining module, and the correlation between vehicle weight, current road slope, and current temperature and the torque slope correction of the shifting process through a third determining module during automatic transmission shifting. The correction module corrects the torque slope according to the correlation, so that the automatic transmission shifts quickly and smoothly under different operating conditions, with better power connection, and can meet the shifting needs of complex operating conditions.

[0083] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0084] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0085] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0087] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A torque correction method of a shift process, characterized by, Applied to automatic transmissions, the method includes: When the automatic transmission shifts gears, the current road slope is determined based on the vehicle weight, and the current temperature of the automatic transmission is also determined. Determine the correlation between the vehicle weight, the current road slope, and the current temperature on the torque slope correction of the automatic transmission; The torque slope is corrected based on the aforementioned correlation; Determining the correlation between the vehicle weight, the current road slope, and the current temperature on the torque slope correction of the automatic transmission includes: The correction magnitudes for the torque slope based on the vehicle weight, the current road surface slope, and the current temperature are determined respectively. The product of the correction range corresponding to the vehicle weight, the correction range corresponding to the current road slope, and the correction range corresponding to the current temperature is determined as the correlation relationship.

2. The method of claim 1, wherein, The correction ranges corresponding to the vehicle weight, the current road slope, and the current temperature are determined based on the vehicle's current operating conditions.

3. The method of claim 1, wherein, Before determining the current road slope based on vehicle weight, the method further includes: With the vehicle's acceleration remaining stable, the vehicle weight is determined based on road gradient, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.

4. The method of claim 3, wherein, The weight of the vehicle is calculated according to the following formula: wherein, is the vehicle driving force, is the rolling resistance, is the air resistance, is the acceleration resistance, is the engine torque, is the transmission gear ratio, is the main reducer gear ratio, is the drive train mechanical efficiency, is the wheel rolling radius, G is the vehicle weight, and f is the rolling resistance coefficient, is the air resistance coefficient, and A is the vehicle frontal area, is the vehicle speed, is the road slope, is the vehicle rotational mass conversion coefficient, and m is the vehicle mass, is the acceleration.

5. The method according to any one of claims 1-4, characterized in that, Determining the current road slope based on the vehicle weight includes: The current road surface slope is determined based on the vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.

6. The method according to any one of claims 1-4, characterized in that, Determining the current temperature of the automatic transmission includes: The current temperature is determined based on the current ambient temperature, the temperature field in the engine compartment, and the clutch temperature.

7. A computer-readable storage medium, characterized in that, It stores a torque correction program for the shifting process, which, when executed by the processor, implements the torque correction method for the shifting process according to any one of claims 1-6.

8. An electronic device, characterized in that, The method includes a memory, a processor, and a torque correction program for a shifting process stored in the memory and executable on the processor. When the processor executes the torque correction program for the shifting process, it implements the torque correction method for the shifting process according to any one of claims 1-6.

9. A torque correction device for a gear shifting process, characterized in that, Applied to an automatic transmission, the device includes: The first determining module is used to determine the current road slope based on the vehicle weight when the automatic transmission shifts gears. The second determining module is used to determine the current temperature of the automatic transmission when the automatic transmission shifts gears; The third determining module is used to determine the correlation between the vehicle weight, the current road slope, and the current temperature and the torque slope correction of the automatic transmission; A correction module is used to correct the torque slope based on the correlation relationship; Determining the correlation between the vehicle weight, the current road slope, and the current temperature on the torque slope correction of the automatic transmission includes: The correction magnitudes for the torque slope based on the vehicle weight, the current road surface slope, and the current temperature are determined respectively. The product of the correction range corresponding to the vehicle weight, the correction range corresponding to the current road slope, and the correction range corresponding to the current temperature is determined as the correlation relationship.

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