Torque control method, device, equipment, medium and product for vehicle engine

Abstract

The present invention provides a method, device, equipment, medium and product for controlling the torque of a vehicle engine, which relates to the field of vehicle control technology. The method comprises: when the gear shifter of the vehicle is in neutral, or the gear shifter is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and the first current speed of the engine of the vehicle; and controlling the torque of the engine based on the current altitude and the first current speed. The technical solution of the present invention controls the torque of the engine based on the current altitude and current speed of the vehicle. When the engine torque is increased, the power of the vehicle can be improved, so that the vehicle can get rid of the dilemma of being stationary for a long time and the wheels not turning under plateau conditions.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a torque control method, device, equipment, medium and product of a vehicle engine. Background Art

[0002] The power of existing vehicles is basically sufficient for general scenarios at low altitudes.

[0003] However, current vehicles are limited by the mechanical properties of the engine and the software capabilities, and lack power under plateau conditions. As a result, when the vehicle is trying to escape or climb a slope under plateau conditions, the entire vehicle is likely to remain stationary for a long time without its wheels turning. Summary of the invention

[0004] The present invention provides a vehicle engine torque control to solve the defect in the prior art that the whole vehicle is likely to remain stationary for a long time without wheels turning when escaping from trouble or climbing a slope under plateau conditions. The technical solution of the present invention controls the engine torque based on the current altitude and current speed of the vehicle. When the engine torque is increased, the power of the vehicle can be improved, so that the vehicle can get rid of the dilemma of remaining stationary for a long time without wheels turning under plateau conditions.

[0005] The present invention provides a torque control of a vehicle engine, comprising the following steps.

[0006] When the gear shifter position of the vehicle is in neutral, or the gear shifter position is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and a first current speed of the engine of the vehicle; The torque of the engine is controlled based on the current altitude and the first current speed.

[0007] According to a vehicle engine torque control method provided by the present invention, the method of controlling the engine torque based on the current altitude and the first current speed includes: Determining a first speed difference between the first current speed and a preset target speed; determining a first target torque based on the current altitude and the first speed difference when the first speed difference is less than a first speed difference threshold; According to a preset first torque rising slope, the torque of the engine is raised to the first target torque until a second speed difference between a second current speed of the engine and the preset target speed is greater than a second speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, and the torque change of the engine is controlled based on the current altitude and the second speed difference.

[0008] According to a vehicle engine torque control method provided by the present invention, the torque change of the engine is controlled based on the current altitude and the second speed difference, comprising: determining a second target torque based on the current altitude and the second speed difference; When the first target torque is less than the second target torque, the torque of the engine is increased to the second target torque according to a preset second torque increase slope; When the first target torque is greater than the second target torque, the torque of the engine is reduced to the second target torque according to a preset first torque decreasing slope; the absolute values ​​of the second torque increasing slope and the first torque decreasing slope are both smaller than the absolute value of the first torque increasing slope; Until a third speed difference between a third current speed of the engine and the preset target speed is greater than or equal to a third speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, the engine torque is controlled to be reduced.

[0009] According to a torque control method of a vehicle engine provided by the present invention, the controlling of the engine torque reduction comprises: According to a preset second torque reduction slope, the torque of the engine is controlled to be reduced to the vehicle initial torque; the vehicle initial torque is the torque obtained from the engine without intervention.

[0010] According to a torque control method for a vehicle engine provided by the present invention, the first target torque is determined based on the current altitude and the first speed difference, comprising: Determining the first target torque by searching a preset first torque table based on the current altitude and the first speed difference; The determining the second target torque based on the current altitude and the second speed difference comprises: The second target torque is determined by searching a preset second torque table based on the current altitude and the second speed difference; the torque values ​​in the first torque table and the second torque table are different.

[0011] According to a vehicle engine torque control method provided by the present invention, the method further includes: When the vehicle speed reaches a preset speed threshold, the engine torque is controlled to drop to the vehicle initial torque according to a preset third torque reduction slope; the vehicle initial torque is the torque obtained from the engine without intervention.

[0012] The present invention also provides a torque control device for a vehicle engine, comprising the following modules: an acquisition module, configured to acquire the current altitude of the vehicle and a first current speed of the engine of the vehicle when the gear shifter gear position of the vehicle is in neutral, or when the gear shifter gear position is switched from the neutral gear to a forward gear or a reverse gear; A control module is configured to control the torque of the engine based on the current altitude and the first current speed.

[0013] The present invention also provides an electronic 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 computer program, the torque control method for the vehicle engine as described above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the torque control method of the vehicle engine as described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the torque control method of the vehicle engine as described above is implemented.

[0016] The torque control method, device, equipment, medium and product of the vehicle engine provided by the present invention obtain the current altitude of the vehicle and the first current speed of the engine of the vehicle when the shifter gear of the vehicle is in neutral, or when the shifter gear is switched from neutral to forward gear or reverse gear; and control the torque of the engine based on the current altitude and the first current speed. The technical solution of the present invention controls the torque of the engine based on the current altitude and current speed of the vehicle. When the engine torque is increased, the power of the vehicle can be improved, so that the vehicle can get rid of the dilemma of being stationary for a long time and the wheels not turning under plateau conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is one of the flow charts of the torque control method of the vehicle engine provided by the present invention.

[0019] Figure 2 This is the second flow chart of the torque control method of the vehicle engine provided by the present invention.

[0020] Figure 3 It is a structural schematic diagram of the torque control device of the vehicle engine provided by the present invention.

[0021] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In view of the above problems in the prior art, the present invention provides a method for controlling the torque of a vehicle engine. It should be noted that the execution subject of the present invention may be an automatic transmission (Transmission Control Unit, TCU) or other electronic devices. The embodiments of the present invention are not specifically limited. The following embodiments are described with TCU as the execution subject. Figure 1 is one of the flow charts of the torque control method of the vehicle engine provided by the present invention, such as Figure 1 As shown, the method includes the following steps 110 and 120.

[0024] Step 110: When the shifter gear position of the vehicle is in neutral, or when the shifter gear position is switched from neutral to forward gear or reverse gear, obtain the current altitude of the vehicle and the first current speed of the engine of the vehicle.

[0025] Specifically, the present invention can execute the method of the present invention to control the torque of the engine when the current altitude of the vehicle is greater than a preset altitude threshold. Further, when the gear shifter of the vehicle is in neutral, or when the gear shifter is switched from neutral to forward gear or reverse gear, the TCU can obtain the current altitude of the vehicle and the first current speed of the engine of the vehicle. The current altitude of the vehicle can be obtained by satellite or calculated based on the atmospheric pressure fed back by the engine.

[0026] It should be noted that when the shifter gear is in neutral, or when the shifter gear is switched from neutral to forward gear or reverse gear, the clutch inside the TCU has not yet fully engaged, and the engine load has not yet reached the maximum load value. It is still possible to increase the engine torque through the TCU to increase the power of the vehicle. If the clutch inside the TCU has been engaged while the shifter gear is continuously maintained in forward gear or reverse gear, it will be difficult to increase the engine torque through the TCU to increase the power of the whole vehicle, and the engine speed and torque may even decrease.

[0027] Step 120: Controlling the torque of the engine based on the current altitude and the first current speed.

[0028] Specifically, the engine torque can be controlled based on the current altitude and the first current speed. The present invention controls the engine torque in order to make the actual engine speed consistent with the preset target speed as quickly as possible, but the power of the existing engine itself is limited. Therefore, TCU torque control can increase the response speed of the engine torque change.

[0029] In one embodiment, controlling the torque of the engine based on the current altitude and the first current speed includes: Determining a first speed difference between the first current speed and a preset target speed; determining a first target torque based on the current altitude and the first speed difference when the first speed difference is less than a first speed difference threshold; According to a preset first torque rising slope, the torque of the engine is raised to the first target torque until a second speed difference between a second current speed of the engine and the preset target speed is greater than a second speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, and the torque change of the engine is controlled based on the current altitude and the second speed difference.

[0030] Specifically, the first current rotation speed may be subtracted from the preset target rotation speed to obtain a first rotation speed difference. Figure 2 FIG. 2 is a flow chart of the torque control method of the vehicle engine provided by the present invention. Figure 2 As shown, the first speed difference can be compared with the first speed difference threshold. When the first speed difference is less than the first speed difference threshold, the first target torque can be determined based on the current altitude and the first speed difference. The first speed difference threshold can be set in advance as needed, and the embodiment of the present invention does not make specific limitations here. The first speed difference threshold can be, for example, -50 revolutions per minute (rpm).

[0031] Furthermore, in order to prevent the sudden change of the engine torque from causing the vehicle to shake and damaging the clutch life and other negative effects, the first torque rise slope can be pre-calibrated. After determining the first target torque, the engine torque can be raised to the first target torque according to the pre-set first torque rise slope. The first torque rise slope can be, for example, 0.8 Nm / 10 ms. During the process of the engine torque raising, the engine speed will also change accordingly, until the second speed difference between the second current speed of the engine and the preset target speed is greater than the second speed difference threshold, or until the gear of the shifter is in the forward gear or the reverse gear for a preset time, indicating that the current speed of the engine meets certain requirements, and then the engine torque change can be further controlled based on the current altitude and the second speed difference to ensure that the engine speed will not continue to increase rapidly when approaching the preset target speed. Among them, the second speed difference threshold and the preset time can be set as needed, and the embodiment of the present invention is not specifically limited here. The second speed difference threshold can be, for example, -40rpm.

[0032] In the above embodiment, the torque of the engine is raised to the first target torque according to the preset first torque rising slope, so that the engine speed can be close to the preset target speed, and the setting of the first torque rising slope avoids the driving safety problem of the whole vehicle caused by the sudden change of the engine torque. Until the second speed difference between the second current speed of the engine and the preset target speed is greater than the second speed difference threshold, or until the gear of the shifter is the forward gear or reverse gear for a preset time, the torque change of the engine is further controlled based on the current altitude and the second speed difference, ensuring that the engine speed can reach the preset target speed more linearly and smoothly after approaching the preset target speed.

[0033] In one embodiment, controlling the torque change of the engine based on the current altitude and the second speed difference includes: determining a second target torque based on the current altitude and the second speed difference; When the first target torque is less than the second target torque, the torque of the engine is increased to the second target torque according to a preset second torque increase slope; When the first target torque is greater than the second target torque, the torque of the engine is reduced to the second target torque according to a preset first torque decreasing slope; the absolute values ​​of the second torque increasing slope and the first torque decreasing slope are both smaller than the absolute value of the first torque increasing slope; Until a third speed difference between a third current speed of the engine and the preset target speed is greater than or equal to a third speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, the engine torque is controlled to be reduced.

[0034] Specifically, the second target torque may be determined based on the current altitude and the second speed difference. Figure 2 In order to prevent the sudden change of the engine torque, the second torque rising slope and the first torque falling slope can be pre-calibrated, and the absolute values ​​of the second torque rising slope and the first torque falling slope are both smaller than the absolute value of the first torque rising slope. Among them, the second torque rising slope and the first torque falling slope can be, for example, 1Nm / 10ms. In the above steps, the torque of the engine has been raised to the first target torque. In order to control the torque of the engine to reach the second target torque, it is necessary to determine whether the torque should be raised or lowered. Therefore, the first target torque and the second target torque can be directly compared. When the first target torque is less than the second target torque, the engine torque is raised to the second target torque according to the preset second torque rising slope. When the first target torque is greater than the second target torque, the engine torque is reduced to the second target torque according to the preset first torque falling slope. In the process of the engine torque reaching the second target torque, the engine speed changes accordingly until the third speed difference between the third current speed of the engine and the preset target speed is greater than or equal to the third speed difference threshold, or until the gear of the shifter is in the forward gear or the reverse gear for a preset time, the engine torque is controlled to be reduced. The third speed difference threshold value may be set as required, and the embodiment of the present invention does not make any specific limitation here. For example, the third speed difference threshold value may be 0 rpm.

[0035] In the above embodiment, the engine torque is raised or lowered to the second target torque according to the preset second torque rising slope or the first torque falling slope, so that the engine speed can be close to the preset target speed, and the setting of the second torque rising slope and the first torque falling slope avoids the vehicle driving safety problem caused by the sudden change of the engine torque. Until the third speed difference between the third current speed of the engine and the preset target speed is greater than or equal to the third speed difference threshold, or until the shifter gear is in the forward gear or reverse gear for a preset time, the engine torque is controlled to be reduced based on the current altitude and the third speed difference to ensure that the engine torque can be restored to the initial state.

[0036] In one embodiment, controlling the torque reduction of the engine comprises: According to a preset second torque reduction slope, the torque of the engine is controlled to be reduced to the vehicle initial torque; the vehicle initial torque is the torque obtained from the engine without intervention.

[0037] Specifically, refer to Figure 2 Since the engine speed has been increased to the preset target speed by controlling the engine torque in the above steps, in order to prevent the engine speed from changing suddenly, the second torque reduction slope can be pre-calibrated, and the vehicle initial torque can be obtained from the engine in advance. Further, the TCU can control the engine torque to drop to the vehicle initial torque according to the pre-set second torque reduction slope. The second torque reduction slope can be, for example, 1.5Nm / 10ms.

[0038] In the above embodiment, the engine torque is controlled to drop to the vehicle initial torque according to the preset second torque reduction slope, so as to avoid sudden changes in the engine speed and thus avoid safety problems such as vehicle runaway.

[0039] In one embodiment, determining the first target torque based on the current altitude and the first speed difference includes: Determining the first target torque by searching a preset first torque table based on the current altitude and the first speed difference; The determining the second target torque based on the current altitude and the second speed difference comprises: The second target torque is determined by searching a preset second torque table based on the current altitude and the second speed difference; the torque values ​​in the first torque table and the second torque table are different.

[0040] Specifically, the first target torque can be determined by searching a preset first torque table based on the current altitude and the first speed difference. Exemplarily, the first torque table can be shown in Table 1 below: Table 1 Example of the first torque table

[0041] For example, when the current altitude is 3000 m and the first speed difference is -100 rqm, the first target torque can be determined to be 15 Nm from Table 1 above.

[0042] Furthermore, the second target torque can be determined by searching a preset second torque table based on the current altitude and the second speed difference. For example, the second torque table can be shown in Table 2 below: Table 2 Example of the second torque table

[0043] For example, when the current altitude is 3000 m and the second speed difference is -200 rqm, the second target torque can be determined to be 10 Nm from Table 2 above.

[0044] It should be noted that the torque values ​​corresponding to the same altitude and the same first / second speed difference in the first torque table and the second torque table are different.

[0045] In the above embodiment, the first target torque is searched in a pre-calibrated first torque table, and the second target torque is searched in a pre-calibrated second table, so that the torque can be controlled more accurately.

[0046] The TCU of the present invention controls the torque of the engine, which can improve the engine speed increase slope. The original engine speed increase slope is approximately 1rpm / 10ms. After the improvement, the engine speed increase slope can be increased by more than 20 times, reaching 21rpm / 10ms. The vehicle implementing the technical solution of the present invention will not affect the speed of the engine requested by the TCU due to the slow engine power response, thereby improving the power of the vehicle under plateau conditions.

[0047] The torque control method of the vehicle engine provided by the present invention obtains the current altitude of the vehicle and the first current speed of the engine of the vehicle when the gear shifter of the vehicle is in neutral, or when the gear shifter is switched from neutral to forward gear or reverse gear; and controls the torque of the engine based on the current altitude and the first current speed. The technical solution of the present invention controls the torque of the engine based on the current altitude and current speed of the vehicle, and when the engine torque is increased, the power of the vehicle can be improved, so that the vehicle can get rid of the dilemma of being stationary for a long time and the wheels not turning under plateau conditions.

[0048] In one embodiment, the method further comprises: When the vehicle speed reaches a preset speed threshold, the engine torque is controlled to drop to the vehicle initial torque according to a preset third torque reduction slope; the vehicle initial torque is the torque obtained from the engine without intervention.

[0049] Specifically, the TCU can monitor the vehicle speed in real time, and when the vehicle speed reaches a preset speed threshold, the engine torque can be controlled to decrease to the vehicle initial torque according to a preset third torque decrease slope. The third torque decrease slope can be, for example, 2Nm / 10ms or 3Nm / 10ms. The preset speed threshold can be set as needed, and the embodiment of the present invention does not make any specific limitation here.

[0050] In the above embodiment, when the vehicle speed reaches a preset speed threshold, the engine torque is controlled to drop to the vehicle initial torque according to the preset third torque reduction slope, which can better meet the driver's needs.

[0051] The torque control device of the vehicle engine provided by the present invention is described below. The torque control device of the vehicle engine described below and the torque control method of the vehicle engine described above can be referred to each other.

[0052] Figure 3 Schematic diagram of the structure of the torque control device of the vehicle engine provided by the present invention, such as Figure 3 As shown, the torque control device 300 of the vehicle engine includes the following modules: An acquisition module 310, configured to acquire the current altitude of the vehicle and a first current speed of the engine of the vehicle when the gear shifter gear position of the vehicle is in neutral, or when the gear shifter gear position is switched from the neutral gear to a forward gear or a reverse gear; The control module 320 is configured to control the torque of the engine based on the current altitude and the first current speed.

[0053] In one embodiment, the control module 320 is specifically configured to: Determining a first speed difference between the first current speed and a preset target speed; determining a first target torque based on the current altitude and the first speed difference when the first speed difference is less than a first speed difference threshold; According to a preset first torque rising slope, the torque of the engine is raised to the first target torque until a second speed difference between a second current speed of the engine and the preset target speed is greater than a second speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, and the torque change of the engine is controlled based on the current altitude and the second speed difference.

[0054] In one embodiment, the control module 320 is further configured to: determining a second target torque based on the current altitude and the second speed difference; When the first target torque is less than the second target torque, the torque of the engine is increased to the second target torque according to a preset second torque increase slope; When the first target torque is greater than the second target torque, the torque of the engine is reduced to the second target torque according to a preset first torque decreasing slope; the absolute values ​​of the second torque increasing slope and the first torque decreasing slope are both smaller than the absolute value of the first torque increasing slope; Until a third speed difference between a third current speed of the engine and the preset target speed is greater than or equal to a third speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, the engine torque is controlled to be reduced.

[0055] In one embodiment, the control module 320 is further configured to: According to a preset second torque reduction slope, the torque of the engine is controlled to be reduced to the vehicle initial torque; the vehicle initial torque is the torque obtained from the engine without intervention.

[0056] In one embodiment, the control module 320 is further configured to: Determining the first target torque by searching a preset first torque table based on the current altitude and the first speed difference; The second target torque is determined by searching a preset second torque table based on the current altitude and the second speed difference; the torque values ​​in the first torque table and the second torque table are different.

[0057] In one embodiment, the torque control device of the vehicle engine further includes an instruction module, which is specifically used to: When the vehicle speed reaches a preset speed threshold, the engine torque is controlled to drop to the vehicle initial torque according to a preset third torque reduction slope; the vehicle initial torque is the torque obtained from the engine without intervention.

[0058] The torque control device of the vehicle engine provided by the present invention obtains the current altitude of the vehicle and the first current speed of the engine of the vehicle when the gear shifter of the vehicle is in neutral, or when the gear shifter is switched from neutral to forward gear or reverse gear; and controls the torque of the engine based on the current altitude and the first current speed. The technical solution of the present invention controls the torque of the engine based on the current altitude and current speed of the vehicle, and when the engine torque is increased, the power of the vehicle can be improved, so that the vehicle can get rid of the dilemma of being stationary for a long time and the wheels not turning under plateau conditions.

[0059] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communications interface 420 and the memory 430 communicate with each other via the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the torque control method of the vehicle engine, and the method includes: When the gear shifter position of the vehicle is in neutral, or the gear shifter position is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and a first current speed of the engine of the vehicle; The torque of the engine is controlled based on the current altitude and the first current speed.

[0060] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0061] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the vehicle engine torque control method provided by the above methods, the method includes: When the gear shifter position of the vehicle is in neutral, or the gear shifter position is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and a first current speed of the engine of the vehicle; The torque of the engine is controlled based on the current altitude and the first current speed.

[0062] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for controlling the torque of a vehicle engine provided by the above methods is implemented, and the method comprises: When the gear shifter position of the vehicle is in neutral, or the gear shifter position is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and a first current speed of the engine of the vehicle; The torque of the engine is controlled based on the current altitude and the first current speed.

[0063] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0064] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling torque of a vehicle engine, characterized in that: include: When the gear shifter position of the vehicle is in neutral, or the gear shifter position is switched from neutral to forward gear or reverse gear, obtaining the current altitude of the vehicle and a first current speed of the engine of the vehicle; The torque of the engine is controlled based on the current altitude and the first current speed.

2. The method for controlling the torque of a vehicle engine according to claim 1, characterized in that: The controlling the torque of the engine based on the current altitude and the first current speed includes: Determining a first speed difference between the first current speed and a preset target speed; determining a first target torque based on the current altitude and the first speed difference when the first speed difference is less than a first speed difference threshold; According to a preset first torque rising slope, the torque of the engine is raised to the first target torque until a second speed difference between a second current speed of the engine and the preset target speed is greater than a second speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, and the torque change of the engine is controlled based on the current altitude and the second speed difference.

3. The vehicle engine torque control method according to claim 2, characterized in that: The step of controlling the torque change of the engine based on the current altitude and the second speed difference comprises: determining a second target torque based on the current altitude and the second speed difference; When the first target torque is less than the second target torque, the torque of the engine is increased to the second target torque according to a preset second torque increase slope; When the first target torque is greater than the second target torque, the torque of the engine is reduced to the second target torque according to a preset first torque decreasing slope; the absolute values ​​of the second torque increasing slope and the first torque decreasing slope are both smaller than the absolute value of the first torque increasing slope; Until a third speed difference between a third current speed of the engine and the preset target speed is greater than or equal to a third speed difference threshold, or until the shifter gear is in the forward gear or the reverse gear for a preset time, the engine torque is controlled to be reduced.

4. The method for controlling the torque of a vehicle engine according to claim 3, characterized in that: The controlling the torque reduction of the engine comprises: According to a preset second torque reduction slope, the torque of the engine is controlled to be reduced to the vehicle initial torque; the vehicle initial torque is the torque obtained from the engine without intervention.

5. The method for controlling the torque of a vehicle engine according to claim 3, characterized in that: The determining the first target torque based on the current altitude and the first speed difference comprises: Determining the first target torque by searching a preset first torque table based on the current altitude and the first speed difference; The determining the second target torque based on the current altitude and the second speed difference comprises: The second target torque is determined by searching a preset second torque table based on the current altitude and the second speed difference; the torque values ​​in the first torque table and the second torque table are different.

6. The method for controlling the torque of a vehicle engine according to any one of claims 1 to 5, characterized in that: The method further comprises: When the vehicle speed reaches a preset speed threshold, the engine torque is controlled to drop to the vehicle initial torque according to a preset third torque reduction slope; the vehicle initial torque is the torque obtained from the engine without intervention.

7. A torque control device for a vehicle engine, characterized in that: an acquisition module, configured to acquire the current altitude of the vehicle and a first current speed of the engine of the vehicle when the gear shifter gear position of the vehicle is in neutral, or when the gear shifter gear position is switched from the neutral gear to a forward gear or a reverse gear; A control module is configured to control the torque of the engine based on the current altitude and the first current speed.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the torque control method of the vehicle engine according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the torque control method of the vehicle engine as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the torque control method of the vehicle engine as claimed in any one of claims 1 to 6 is implemented.

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