A torque calibration method, device, equipment and medium for hybrid electric vehicle

Abstract

The present invention relates to the technical field of hybrid electric vehicles, and more particularly to a torque calibration method for a hybrid electric vehicle. The method comprises: obtaining multiple target torques for a vehicle engine; performing a torque test on the engine based on each of the multiple target torques to obtain a target exhaust emission value for each target torque; and obtaining a target operating condition for the engine corresponding to each target torque based on the target exhaust emission value for each target torque. The method determines a vehicle torque distribution strategy based on the hybrid electric vehicle exhaust emissions, thereby reducing exhaust pollutant emissions and engine aftertreatment requirements, thereby improving the vehicle's environmental performance.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid electric vehicles, and in particular to a torque calibration method, device, equipment and medium for a hybrid electric vehicle. Background Art

[0002] As people's environmental awareness grows, automobile exhaust emissions, as a major source of pollution, have become a focus of attention. With the tightening of automobile exhaust emission regulations, emission standards will become increasingly stringent. To meet increasingly stringent fuel consumption and emission regulations, automobile manufacturers are actively developing hybrid vehicles, which offer low fuel consumption and low emissions.

[0003] The torque distribution between a hybrid vehicle's drive motor and engine significantly impacts its exhaust emissions. Existing torque distribution schemes for hybrid vehicles generally prioritize efficiency, leading to excessive exhaust emissions. Summary of the Invention

[0004] The embodiments of the present application provide a torque calibration method, device, equipment and medium for a hybrid vehicle, thereby solving the technical problem in the prior art that hybrid vehicles easily exceed the exhaust emission standards. This method achieves technical effects such as determining the vehicle torque distribution strategy based on the exhaust emissions of the hybrid vehicle, reducing the emission of exhaust pollutants and the post-treatment requirements of the engine, and improving the environmental performance of the vehicle.

[0005] In a first aspect, an embodiment of the present invention provides a torque calibration method for a hybrid vehicle, comprising:

[0006] obtaining a plurality of target torques of a vehicle engine;

[0007] performing a torque test on the engine according to each target torque among the plurality of target torques, and obtaining a target exhaust emission amount for each target torque;

[0008] According to the target exhaust emission amount of each target torque, the target operating condition of the engine corresponding to each target torque is obtained.

[0009] Preferably, performing a torque test on the engine according to each target torque among the multiple target torques and obtaining a target exhaust emission amount for each target torque includes:

[0010] For each target torque, the engine is operated under a plurality of operating conditions according to the target torque, wherein the operating condition is a process in which the engine changes from an initial torque to the target torque;

[0011] In a process of executing the plurality of operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of operating conditions;

[0012] Obtaining a target exhaust emission amount of the target torque according to the actual exhaust emission amount of each operating condition;

[0013] After the above operations are completed for each target torque, the target exhaust emission amount for each target torque is obtained.

[0014] Preferably, in the process of causing the engine to perform the multiple operating conditions according to the target torque, measuring the actual exhaust emissions of each of the multiple operating conditions includes:

[0015] For each of the operating conditions, in a process of causing the engine to perform the operating condition according to the target torque, measuring actual exhaust emissions of the operating condition;

[0016] After the above operations are performed in each operating condition, the actual exhaust emission amount of each operating condition is obtained.

[0017] Preferably, obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes:

[0018] Selecting the lowest exhaust emission from the actual exhaust emission under the multiple operating conditions;

[0019] The minimum exhaust emission amount is determined as the target exhaust emission amount.

[0020] Preferably, obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes:

[0021] Filtering out a first exhaust emission amount and a second exhaust emission amount from actual exhaust emissions under the multiple operating conditions;

[0022] generating a plurality of test operating conditions according to the operating conditions corresponding to the first exhaust emission amount and the operating conditions corresponding to the second exhaust emission amount;

[0023] In a process of executing the plurality of test operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of test operating conditions;

[0024] Filtering out the lowest exhaust emission amount from the first exhaust emission amount, the second exhaust emission amount, and the actual exhaust emission amounts of the multiple test conditions;

[0025] The minimum exhaust emission amount is determined as the target exhaust emission amount.

[0026] Preferably, obtaining the target operating condition of the engine corresponding to each target torque according to the target exhaust emission of each target torque includes:

[0027] For each target exhaust emission amount of the target torque, calibrate the operating condition corresponding to the target exhaust emission amount of the target torque as the target operating condition corresponding to the target torque;

[0028] After the above operations are completed for the target exhaust emission amounts of each target torque, the target operating conditions corresponding to each target torque are obtained, and the target operating conditions corresponding to each target torque are stored.

[0029] Preferably, the obtaining of multiple target torques of the vehicle engine includes:

[0030] Obtaining multiple torque ranges of the engine;

[0031] A target torque is selected from each torque range of the multiple torque ranges to obtain the multiple target torques.

[0032] Based on the same inventive concept, in a second aspect, the present invention further provides a torque calibration device for a hybrid vehicle, comprising:

[0033] an acquisition module, configured to acquire a plurality of target torques of a vehicle engine;

[0034] a testing module, configured to perform a torque test on the engine according to each target torque of the plurality of target torques, and obtain a target exhaust emission amount for each target torque;

[0035] The calibration module is used to obtain the target operating condition of the engine corresponding to each target torque according to the target exhaust emission of each target torque.

[0036] Based on the same inventive concept, in a third aspect, the present invention provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of a torque calibration method for a hybrid electric vehicle when executing the program.

[0037] Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of a torque calibration method for a hybrid vehicle.

[0038] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0039] In an embodiment of the present invention, multiple target torques for a vehicle engine are first obtained. A torque test is then performed on the engine based on each of the multiple target torques to obtain target exhaust emissions for each target torque. For each target torque, the engine is subjected to multiple operating conditions based on the target torque to obtain actual exhaust emissions under each of the multiple operating conditions. The lowest exhaust emission value is then selected from the multiple actual exhaust emission values ​​and used as the target exhaust emission value for the target torque, thereby efficiently and quickly determining the target exhaust emissions.

[0040] Then, based on the target exhaust emissions for each target torque, the target operating condition of the engine corresponding to each target torque is obtained. Here, the operating condition corresponding to the target exhaust emissions for the target torque is calibrated as the target operating condition corresponding to the target torque. This determines the vehicle engine output torque distribution strategy based on the hybrid vehicle exhaust emissions, reduces exhaust pollutant emissions and engine aftertreatment requirements, and improves the vehicle's environmental performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference figures denote the same components. In the drawings:

[0042] Figure 1 A schematic flow chart showing the steps of a torque calibration method for a hybrid vehicle according to an embodiment of the present invention is shown;

[0043] Figure 2 A schematic diagram of a curve showing an operating condition in an embodiment of the present invention is shown;

[0044] Figure 3 A schematic diagram of a curve 202 in an operating condition in an embodiment of the present invention is shown;

[0045] Figure 4 A schematic diagram of a curve showing a test condition generated in an embodiment of the present invention is shown;

[0046] Figure 5 A schematic diagram of a module of a torque calibration device for a hybrid vehicle in an embodiment of the present invention is shown;

[0047] Figure 6 A schematic structural diagram of a computer device in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0048] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] Example 1

[0050] The first embodiment of the present invention provides a method for calibrating torque of a hybrid vehicle, such as Figure 1 As shown, including:

[0051] S101, obtaining multiple target torques of a vehicle engine;

[0052] S102, performing a torque test on the engine according to each target torque among a plurality of target torques, and obtaining a target exhaust emission amount for each target torque;

[0053] S103 , obtaining a target operating condition of the engine corresponding to each target torque according to the target exhaust emission amount of each target torque.

[0054] The torque calibration method for a hybrid vehicle of this embodiment is applied to a calibration bench of an engine, that is, the torque calibration method is implemented on the bench.

[0055] Next, combine Figure 1 The specific implementation steps of the torque calibration method for a hybrid vehicle provided by this embodiment are described in detail:

[0056] First, step S101 is executed to obtain multiple target torques of the vehicle engine.

[0057] Specifically, there are two ways to obtain multiple target torques of the vehicle engine, as shown below:

[0058] The first method is that the test bench receives multiple torque ranges of the engine, selects a target torque from each torque range, and then obtains multiple target torques, where the target torque can be the median, mean, minimum, maximum or other values ​​within the corresponding torque range.

[0059] For example, the engine receives multiple torque ranges of 148Nm-152Nm, 153Nm-157Nm, 158Nm-162Nm, ..., and so on to 198Nm-202Nm. A median is selected from each torque range as the target torque. The median of the torque range of 148Nm-152Nm is 150, that is, the target torque of this torque range is 150. The target torque of the torque range of 153Nm-157Nm is 155Nm, the target torque of the torque range of 158Nm-162Nm is 160Nm, and so on to the target torque of the torque range of 198Nm-202Nm is 200Nm. Thus, multiple target torques are achieved.

[0060] The second type is that due to the different driving conditions of the vehicle, under each driving condition, the vehicle will make the engine output torques of different requirements. The torques of the engine output with different requirements are set as multiple target torques, that is, multiple specified target torques are directly input to the test bench. Among them, the multiple target torques can be torques with regular changes, such as in 150Nm-200Nm, starting from 150Nm, a target torque is selected every 5Nm, and the selected target torque gradually increases. The multiple target torques can also be torques that do not have regular changes, for example, the multiple target torques are 153Nm, 160Nm, 168Nm, 175Nm and 190Nm respectively.

[0061] Next, step S102 is executed to perform a torque test on the engine according to each target torque among the multiple target torques, and obtain a target exhaust emission amount for each target torque.

[0062] Specifically, this step is to measure the target exhaust emissions for each target torque. The measurement method for each target torque is the same, so a single target torque will be used for explanation.

[0063] For each target torque, the engine is operated in various operating modes, where each operating mode is defined as the process of the engine changing from an initial torque to the target torque. The initial torque can be 0 Nm or a torque set according to actual requirements.

[0064] It should be noted that if Figure 2 As shown, the various operating conditions include but are not limited to an operating condition that is fast at first and then slow, an operating condition that rises at a uniform speed, an operating condition that is slow at first and then fast, an operating condition that is fast at first and then slow, and an operating condition that is slow at first and then fast.

[0065] like Figure 2 As shown, the first fast then slow operating condition is the operating condition in which the output torque of the engine first increases rapidly from the initial torque and then increases slowly to the target torque over time. That is, the first fast then slow operating condition is Figure 2The operating condition of uniform increase is the operating condition in which the output torque of the engine increases uniformly from the initial torque to the target torque over time, that is, the operating condition of uniform increase is Figure 2 The first slow then fast operating condition is the operating condition in which the output torque of the engine starts from the initial torque and then rises slowly over time to the target torque. That is, the first slow then fast operating condition is Figure 2 The first fast, then slow, then fast running condition is the running condition where the engine output torque starts from the initial torque and then slows down and then quickly rises to the target torque. Figure 2 The operating condition of slow at first, fast in the middle and then slow at last is the operating condition in which the output torque of the engine starts from the initial torque and then rises slowly over time, then rises rapidly in the middle and then slowly rises to the target torque. That is, the operating condition of slow at first, fast in the middle and then slow at last is Figure 2 204 curve.

[0066] In the process of executing multiple operating conditions for the engine according to the target torque, actual exhaust emissions in each of the multiple operating conditions are measured.

[0067] Specifically, for each operating condition, actual exhaust emissions are measured during the engine's execution of the operating condition based on the target torque. After performing the above operations for each operating condition, actual exhaust emissions for each operating condition are obtained. The actual exhaust emissions include, but are not limited to, carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOX).

[0068] For example, assuming that the engine is operated according to the target torque Figure 2 There are five operating conditions as shown. Figure 3 As shown, according to the target torque, the engine is Figure 2 During the operation of the 202 curve, the actual exhaust emissions of the operation of the 202 curve are measured by the detection equipment set at the exhaust pipe of the engine. The actual exhaust emissions of the operation of the 202 curve are calculated by formula (1).

[0069] E all =E CO +E NOX +E THC (1)

[0070] Among them, E all is the actual exhaust emission, E CO is the CO emission, ENOX is the NOX emission, E THC is the emission of THC.

[0071] It should be noted that according to the target torque, the engine is Figure 2 The operating condition of the 202 curve indicates that the engine is running according to the operating condition of the 202 curve. Figure 3 In FIG, the lower half of the curve 202 is the output torque of the engine, and the upper half of the curve 202 is the output torque of the drive motor.

[0072] According to the above process, the engine is operated according to the target torque. Figure 2 During the operation of the 201 curve, the actual exhaust emissions of the 201 curve are measured. Figure 2 During the operation of the 203 curve, the actual exhaust emissions of the 203 curve are measured. Figure 2 During the operation of the 204 curve, the actual exhaust emissions of the 204 curve are measured. Figure 2 During the operating condition of the 205 curve, the actual exhaust emissions of the operating condition of the 205 curve are measured.

[0073] After the actual exhaust emissions of each operating condition are obtained, the target exhaust emissions of the target torque are obtained according to the actual exhaust emissions of each operating condition.

[0074] Specifically, there are two ways to obtain the target exhaust emission amount at the target torque, as shown below.

[0075] The first method is to select the lowest exhaust emission value from the actual exhaust emission values ​​under various operating conditions and determine the lowest exhaust emission value as the target exhaust emission value.

[0076] Assume that the actual exhaust emissions measured for operating condition 201 are 100, the actual exhaust emissions measured for operating condition 202 are 150, the actual exhaust emissions measured for operating condition 203 are 115, the actual exhaust emissions measured for operating condition 204 are 127, and the actual exhaust emissions measured for operating condition 205 are 160. Among these five operating conditions, the actual exhaust emissions measured for operating condition 201 are the lowest. In this case, the actual exhaust emissions for operating condition 201 are used as the target exhaust emissions for the target torque.

[0077] In the first method of obtaining the target exhaust emissions of the target torque, the lowest actual exhaust emissions, that is, the target exhaust emissions of the target torque, are screened out from the actual exhaust emissions of multiple preset operating conditions, so as to combine the exhaust emissions of the hybrid vehicle to determine the target exhaust emissions efficiently and quickly.

[0078] The second method is: a. Filtering a first exhaust emission amount and a second exhaust emission amount from the actual exhaust emission amounts under multiple operating conditions. The first exhaust emission amount is the lowest exhaust emission amount filtered out from the actual exhaust emission amounts under the multiple operating conditions, i.e., the lowest actual exhaust emission amount among the actual exhaust emission amounts under these multiple operating conditions. The second exhaust emission amount is the next lowest exhaust emission amount filtered out from the actual exhaust emission amounts under the multiple operating conditions.

[0079] b. Generate multiple test conditions based on the operating condition corresponding to the first exhaust emission amount and the operating condition corresponding to the second exhaust emission amount.

[0080] Specifically, multiple test operating conditions are generated between the operating condition corresponding to the first exhaust emission amount and the operating condition corresponding to the second exhaust emission amount, wherein the test operating conditions are operating conditions obtained by optimizing between the operating condition corresponding to the first exhaust emission amount and the operating condition corresponding to the second exhaust emission amount.

[0081] Assume that the actual exhaust emissions measured for operating condition 201 are 145, the actual exhaust emissions measured for operating condition 202 are 150, the actual exhaust emissions measured for operating condition 203 are 145, the actual exhaust emissions measured for operating condition 204 are 127, and the actual exhaust emissions measured for operating condition 205 are 110. Among these five operating conditions, the actual exhaust emissions measured for operating condition 205 are the lowest, i.e., the first exhaust emissions, and the actual exhaust emissions measured for operating condition 204 are the second lowest, i.e., the second exhaust emissions.

[0082] Between the operating condition corresponding to the first exhaust emission and the operating condition corresponding to the second exhaust emission, that is, between the actual exhaust emission of the operating condition of the 205 curve and the actual exhaust emission of the operating condition of the 204 curve, multiple test conditions are generated. Figure 4 As shown, the operating condition of the curve 206 is generated according to the operating condition of the curve 204 and the operating condition of the curve 205 , and the operating condition of the curve 206 is also referred to as the test condition of the curve 206 .

[0083] c. In the process of executing multiple test conditions on the engine according to the target torque, actual exhaust emissions in each of the multiple test conditions are measured.

[0084] Specifically, for each test condition, the actual exhaust emissions of the test condition are measured during the process of executing the test condition on the engine according to the target torque. After the above operation is performed for each test condition, the actual exhaust emissions of each test condition are obtained.

[0085] d. Filter out the lowest exhaust emission from the first exhaust emission, the second exhaust emission, and the actual exhaust emissions under various test conditions.

[0086] For example, the first exhaust emission volume is 127, the second exhaust emission volume is 110, and the actual exhaust emissions of the three test conditions are 100, 98, and 105, with 98 being the lowest exhaust emission volume.

[0087] In addition, this embodiment can also filter out the lowest exhaust emissions and the second lowest exhaust emissions from the first exhaust emissions, the second exhaust emissions and the actual exhaust emissions under multiple test conditions, and repeat steps a to d until the final lowest exhaust emissions are filtered out.

[0088] e. Determine the minimum exhaust emission as the target exhaust emission.

[0089] In the second method of obtaining the target exhaust emissions for the target torque, the lowest actual exhaust emissions and the second lowest actual exhaust emissions are screened out from the actual exhaust emissions of a plurality of preset operating conditions. Then, a plurality of test conditions are generated based on the operating conditions corresponding to the lowest actual exhaust emissions and the operating conditions corresponding to the second lowest actual exhaust emissions. According to the target torque, a plurality of test conditions are executed on the engine to obtain the actual exhaust emissions of the plurality of test conditions. Then, according to the actual exhaust emissions of the plurality of test conditions, the test conditions are optimized until the lowest actual exhaust emissions of the test conditions are found, that is, the final minimum exhaust emissions. Finally, the final minimum exhaust emissions are used as the target exhaust emissions for the target torque, so as to determine the target exhaust emissions efficiently, accurately and meticulously in combination with the exhaust emissions of the hybrid vehicle.

[0090] After the target exhaust emission amount of the target torque is obtained, each target torque is operated according to the above steps to obtain the target exhaust emission amount of each target torque.

[0091] Then, step S103 is executed to obtain the target operating condition of the engine corresponding to each target torque according to the target exhaust emission amount of each target torque.

[0092] Specifically, for the target exhaust emissions of each target torque, the operating conditions corresponding to the target exhaust emissions of the target torque are calibrated as the target operating conditions corresponding to the target torque; after the above operations are completed for the target exhaust emissions of each target torque, the target operating conditions corresponding to each target torque are obtained, and the target operating conditions corresponding to each target torque are stored.

[0093] For example, the target exhaust emissions for target torque A are the actual exhaust emissions for the operating condition of curve 201, and the operating condition of curve 201 is calibrated as the target operating condition corresponding to A. When the engine is achieving target torque A, it operates according to the operating condition of curve 201.

[0094] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0095] In this embodiment, multiple target torques for the vehicle engine are first obtained. A torque test is then performed on the engine based on each of these target torques to determine target exhaust emissions for each target torque. For each target torque, the engine is subjected to multiple operating conditions based on the target torque to determine actual exhaust emissions under these conditions. The lowest exhaust emission value is then selected from the actual exhaust emission values ​​under these multiple operating conditions and used as the target exhaust emission value for the target torque, enabling efficient and rapid determination of target exhaust emissions.

[0096] Then, based on the target exhaust emissions for each target torque, the target operating condition of the engine corresponding to each target torque is obtained. Here, the operating condition corresponding to the target exhaust emissions for the target torque is calibrated as the target operating condition corresponding to the target torque. This determines the vehicle engine output torque distribution strategy based on the hybrid vehicle exhaust emissions, reduces exhaust pollutant emissions and engine aftertreatment requirements, and improves the vehicle's environmental performance.

[0097] Example 2

[0098] Based on the same inventive concept, the second embodiment of the present invention also provides a torque calibration device for a hybrid vehicle, such as Figure 5 As shown, including:

[0099] An acquisition module 301 is configured to acquire multiple target torques of a vehicle engine;

[0100] a testing module 302 for performing a torque test on the engine according to each target torque of the plurality of target torques, and obtaining a target exhaust emission amount for each target torque;

[0101] The calibration module 303 is configured to obtain the target operating condition of the engine corresponding to each target torque according to the target exhaust emission amount of each target torque.

[0102] As an optional embodiment, performing a torque test on the engine according to each target torque among the multiple target torques and obtaining a target exhaust emission amount for each target torque includes:

[0103] For each target torque, the engine is operated under a plurality of operating conditions according to the target torque, wherein the operating condition is a process in which the engine changes from an initial torque to the target torque;

[0104] In a process of executing the plurality of operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of operating conditions;

[0105] Obtaining a target exhaust emission amount of the target torque according to the actual exhaust emission amount of each operating condition;

[0106] After the above operations are completed for each target torque, the target exhaust emission amount for each target torque is obtained.

[0107] As an optional embodiment, in the process of causing the engine to perform the multiple operating conditions according to the target torque, measuring the actual exhaust emissions of each of the multiple operating conditions includes:

[0108] For each of the operating conditions, in a process of causing the engine to perform the operating condition according to the target torque, measuring actual exhaust emissions of the operating condition;

[0109] After the above operations are performed in each operating condition, the actual exhaust emission amount of each operating condition is obtained.

[0110] As an optional embodiment, obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes:

[0111] Selecting the lowest exhaust emission from the actual exhaust emission under the multiple operating conditions;

[0112] The minimum exhaust emission amount is determined as the target exhaust emission amount.

[0113] As an optional embodiment, obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes:

[0114] Filtering out a first exhaust emission amount and a second exhaust emission amount from actual exhaust emissions under the multiple operating conditions;

[0115] generating a plurality of test operating conditions according to the operating conditions corresponding to the first exhaust emission amount and the operating conditions corresponding to the second exhaust emission amount;

[0116] In a process of executing the plurality of test operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of test operating conditions;

[0117] Filtering out the lowest exhaust emission amount from the first exhaust emission amount, the second exhaust emission amount, and the actual exhaust emission amounts of the multiple test conditions;

[0118] The minimum exhaust emission amount is determined as the target exhaust emission amount.

[0119] As an optional embodiment, obtaining the target operating condition of the engine corresponding to each target torque according to the target exhaust emissions of each target torque includes:

[0120] For each target exhaust emission amount of the target torque, calibrate the operating condition corresponding to the target exhaust emission amount of the target torque as the target operating condition corresponding to the target torque;

[0121] After the above operations are completed for the target exhaust emission amounts of each target torque, the target operating conditions corresponding to each target torque are obtained, and the target operating conditions corresponding to each target torque are stored.

[0122] As an optional embodiment, obtaining multiple target torques of the vehicle engine includes:

[0123] Obtaining multiple torque ranges of the engine;

[0124] A target torque is selected from each torque range of the multiple torque ranges to obtain the multiple target torques.

[0125] Since the torque calibration device for a hybrid vehicle described in this embodiment is a device used to implement the torque calibration method for a hybrid vehicle described in Example 1 of this application, those skilled in the art will be able to understand the specific implementation and various variations of the torque calibration device for a hybrid vehicle described in Example 1 of this application based on the torque calibration method for a hybrid vehicle described in Example 1 of this application. Therefore, how the torque calibration device for a hybrid vehicle implements the method described in Example 1 of this application will not be described in detail here. As long as a device used by those skilled in the art to implement the torque calibration method for a hybrid vehicle described in Example 1 of this application falls within the scope of protection of this application.

[0126] Example 3

[0127] Based on the same inventive concept, the third embodiment of the present invention further provides a computer device, such as Figure 6 As shown, it includes a memory 404, a processor 402 and a computer program stored in the memory 404 and executable on the processor 402. When the processor 402 executes the program, the steps of any one of the above-mentioned methods for torque calibration of a hybrid vehicle are implemented.

[0128] Among them, Figure 6 In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown. Bus 400 may include any number of interconnected buses and bridges, and bus 400 links together various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 406 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same component, namely a transceiver, which provides a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.

[0129] Example 4

[0130] Based on the same inventive concept, the fourth embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of any one of the torque calibration methods for a hybrid vehicle described in the first embodiment above.

[0131] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0132] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0133] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0134] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0135] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0136] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A torque calibration method for a hybrid vehicle, characterized in that: include: obtaining a plurality of target torques of a vehicle engine; performing a torque test on the engine according to each target torque among the plurality of target torques, and obtaining a target exhaust emission amount for each target torque; Obtaining a target operating condition of the engine corresponding to each target torque according to the target exhaust emission amount of each target torque; The step of performing a torque test on the engine according to each target torque among the plurality of target torques and obtaining a target exhaust emission amount for each target torque includes: For each target torque, the engine is operated under a plurality of operating conditions according to the target torque, wherein the operating condition is a process in which the engine changes from an initial torque to the target torque; In a process of executing the plurality of operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of operating conditions; Obtaining a target exhaust emission amount of the target torque according to the actual exhaust emission amount of each operating condition; After the above operations are completed for each target torque, the target exhaust emission amount for each target torque is obtained.

2. The method according to claim 1, wherein The step of measuring actual exhaust emissions in each of the multiple operating conditions during the execution of the multiple operating conditions by the engine according to the target torque includes: For each of the operating conditions, in a process of causing the engine to perform the operating condition according to the target torque, measuring actual exhaust emissions of the operating condition; After the above operations are performed in each operating condition, the actual exhaust emission amount of each operating condition is obtained.

3. The method according to claim 1, wherein Obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes: Selecting the lowest exhaust emission from the actual exhaust emission under the multiple operating conditions; The minimum exhaust emission amount is determined as the target exhaust emission amount.

4. The method according to claim 1, wherein Obtaining the target exhaust emissions of the target torque according to the actual exhaust emissions of each operating condition includes: Filtering out a first exhaust emission amount and a second exhaust emission amount from actual exhaust emissions under the multiple operating conditions; generating a plurality of test operating conditions according to the operating conditions corresponding to the first exhaust emission amount and the operating conditions corresponding to the second exhaust emission amount; In a process of executing the plurality of test operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of test operating conditions; Filtering out the lowest exhaust emission amount from the first exhaust emission amount, the second exhaust emission amount, and the actual exhaust emission amounts of the multiple test conditions; The minimum exhaust emission amount is determined as the target exhaust emission amount.

5. The method according to claim 1, wherein Obtaining the target operating condition of the engine corresponding to each target torque according to the target exhaust emission of each target torque includes: For each target exhaust emission amount of the target torque, calibrate the operating condition corresponding to the target exhaust emission amount of the target torque as the target operating condition corresponding to the target torque; After the above operations are completed for the target exhaust emission amounts of each target torque, the target operating conditions corresponding to each target torque are obtained, and the target operating conditions corresponding to each target torque are stored.

6. The method according to claim 1, wherein The obtaining of multiple target torques of the vehicle engine includes: Obtaining multiple torque ranges of the engine; A target torque is selected from each torque range of the multiple torque ranges to obtain the multiple target torques.

7. A torque calibration device for a hybrid vehicle, characterized in that: include: an acquisition module, configured to acquire a plurality of target torques of a vehicle engine; a testing module, configured to perform a torque test on the engine according to each target torque of the plurality of target torques, and obtain a target exhaust emission amount for each target torque; The test module is further configured to execute, for each target torque, a plurality of operating conditions on the engine according to the target torque, wherein the operating condition is a process in which the engine changes from an initial torque to the target torque; In a process of executing the plurality of operating conditions on the engine according to the target torque, measuring actual exhaust emissions in each of the plurality of operating conditions; Obtaining a target exhaust emission amount of the target torque according to the actual exhaust emission amount of each operating condition; After completing the above operations for each target torque, obtaining the target exhaust emission amount for each target torque; The calibration module is used to obtain the target operating condition of the engine corresponding to each target torque according to the target exhaust emission of each target torque.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method steps according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method steps according to any one of claims 1 to 6 are implemented.

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