Method for regulating the suction power of a hydraulic pump, regulating device and regulating system

Abstract

The application provides a hydraulic pump suction power adjusting method, adjusting device and adjusting system, the method comprises the following steps: obtaining the engine speed and output torque under the current working condition; in the case that the speed is less than the preset speed, judging whether the speed and the output torque conform to the first mapping relationship, the first mapping relationship is the external characteristic curve of the engine; in the case that the speed and the output torque do not conform to the first mapping relationship, adjusting the suction power to the first target suction power according to the speed difference value and the second mapping relationship, so as to improve the speed to the preset speed, the speed difference value is the difference value between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference value and the first target suction power under the historical working condition. The method solves the problem that the adjusting value of the hydraulic pump suction power which can quickly restore the engine speed cannot be determined when the engine intake is insufficient to limit the engine speed in the prior art.

Description

Technical Field

[0001] This application relates to the field of engine technology, and more specifically, to a method, device, computer-readable storage medium, and system for adjusting the suction power of a hydraulic pump. Background Technology

[0002] Currently, hydraulic control mainly limits the intake power of the hydraulic pump based on changes in engine speed. Therefore, it cannot accurately determine the engine's load capacity. Especially during transient loading, the engine speed drops too much due to intake and other reasons. If the intake power limit of the hydraulic pump is too large, the vehicle's response will be slow. If the intake power limit of the hydraulic pump is too small, the engine speed recovery will not be obvious.

[0003] The information disclosed above in the background section is only intended to enhance the understanding of the background art of the art described herein. Therefore, the background art may contain certain information that does not constitute prior art known to those skilled in the art in this country. Summary of the Invention

[0004] The main objective of this application is to provide a method, device, computer-readable storage medium, and system for adjusting the suction power of a hydraulic pump, in order to solve the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when the engine speed is limited by insufficient engine intake.

[0005] According to one aspect of the embodiments of this application, a method for adjusting the suction power of a hydraulic pump is provided. The hydraulic pump is a load of an engine and is directly connected to the engine. The method includes: acquiring the engine speed and output torque under current operating conditions; when the engine speed is less than a preset speed, determining whether the engine speed and the output torque conform to a first mapping relationship, the first mapping relationship being the external characteristic curve of the engine; when the engine speed and the output torque do not conform to the first mapping relationship, adjusting the suction power to a first target suction power according to a speed difference and a second mapping relationship to increase the engine speed to the preset speed, the speed difference being the difference between the engine speed and the preset speed, and the second mapping relationship being a mapping relationship between the speed difference and the first target suction power under historical operating conditions.

[0006] Optionally, after determining whether the rotational speed and the output torque conform to the first mapping relationship, the method further includes: if the rotational speed and the output torque conform to the first mapping relationship, adjusting the intake power to a second target intake power according to the rotational speed difference and a third mapping relationship, so as to increase the rotational speed to the preset rotational speed, wherein the third mapping relationship is the mapping relationship between the rotational speed difference and the second target intake power under historical operating conditions.

[0007] Optionally, the first target inhalation power corresponding to the speed difference in the second mapping relationship is greater than the second target inhalation power corresponding to the same speed difference in the third mapping relationship.

[0008] Optionally, the rotational speed difference in the second mapping relationship is negatively correlated with the first target inhalation power, and the rotational speed difference in the third mapping relationship is negatively correlated with the second target inhalation power.

[0009] Optionally, before obtaining the engine speed and output torque under the current operating conditions, the method further includes: obtaining the engine load rate, and keeping the intake power unchanged when the load rate is less than a preset load rate.

[0010] Optionally, before determining whether the rotational speed and the output torque conform to the first mapping relationship, the method further includes: calculating the difference between the rotational speed and the preset rotational speed to obtain the rotational speed difference; and keeping the intake power unchanged when the rotational speed difference is less than the preset rotational speed difference.

[0011] Optionally, the method for obtaining the output torque includes: obtaining the output torque percentage of the engine; calculating the product of the output torque percentage and a reference torque to obtain the output torque.

[0012] Optionally, after obtaining the engine speed and output torque under the current operating conditions, the method further includes: determining whether the speed is less than a preset speed threshold; and if the speed is less than the preset speed threshold, sending a message notification that the engine is operating abnormally.

[0013] According to another aspect of the embodiments of this application, a device for adjusting the suction power of a hydraulic pump is provided. The hydraulic pump is a load of an engine and is directly connected to the engine. The device includes: an acquisition unit for acquiring the engine speed and output torque under current operating conditions; a judgment unit for determining whether the engine speed and the output torque conform to a first mapping relationship when the engine speed is less than a preset engine speed, wherein the first mapping relationship is the external characteristic curve of the engine; and a processing unit for adjusting the suction power to a first target suction power according to a speed difference and a second mapping relationship when the engine speed and the output torque do not conform to the first mapping relationship, thereby increasing the engine speed to the preset engine speed. The speed difference is the difference between the engine speed and the preset engine speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical operating conditions.

[0014] According to another aspect of the embodiments of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein when the program is executed by a processor, the processor executes any of the described methods for adjusting the suction power of a hydraulic pump.

[0015] According to another aspect of the embodiments of this application, a hydraulic pump suction power adjustment system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any of the hydraulic pump suction power adjustment methods described above.

[0016] In the above-described method for adjusting the suction power of the hydraulic pump, the hydraulic pump is the load of the engine and is directly connected to the engine. First, the engine speed and output torque under the current operating conditions are obtained. Then, if the speed is less than a preset speed, it is determined whether the speed and the output torque conform to a first mapping relationship, which is the external characteristic curve of the engine. Finally, if the speed and the output torque do not conform to the first mapping relationship, the suction power is adjusted to a first target suction power based on the speed difference and a second mapping relationship to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical operating conditions. The preset speed in this method is the target speed of the engine. When the engine speed is lower than the preset speed, it is determined that the engine speed cannot reach the target speed. If the engine speed and output torque do not conform to the engine's external characteristic curve at this time, it is determined that the reason for limiting the engine speed is insufficient engine intake. At this time, based on the mapping relationship between the speed difference and the speed difference obtained from historical operating conditions and the suction power of the hydraulic pump, the suction power of the hydraulic pump is adjusted to increase the engine speed. This method solves the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when insufficient engine intake limits the engine speed. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A flowchart is shown of a method for adjusting the suction power of a hydraulic pump according to an embodiment of this application;

[0019] Figure 2A flowchart is shown for a method of adjusting the suction power of a hydraulic pump according to a specific embodiment of this application;

[0020] Figure 3 A flowchart is shown for a method of adjusting the suction power of a hydraulic pump according to another specific embodiment of this application;

[0021] Figure 4 A flowchart is shown for a method of adjusting the suction power of a hydraulic pump according to another specific embodiment of this application;

[0022] Figure 5 A flowchart is shown for a method of adjusting the suction power of a hydraulic pump according to another specific embodiment of this application;

[0023] Figure 6 A flowchart is shown of a method for adjusting the suction power of a hydraulic pump according to an embodiment of this application;

[0024] Figure 7 A schematic diagram of a hydraulic pump suction power adjustment device according to an embodiment of this application is shown. Detailed Implementation

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Furthermore, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0028] As mentioned in the background section, in the prior art, when insufficient engine intake limits engine speed, it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore engine speed. In order to solve the above problem, in a typical embodiment of this application, a method, adjustment device, computer-readable storage medium and adjustment system for adjusting hydraulic pump suction power are provided.

[0029] According to an embodiment of this application, a method for adjusting the suction power of a hydraulic pump is provided.

[0030] Figure 1 This is a flowchart of a method for adjusting the suction power of a hydraulic pump according to an embodiment of this application. Figure 1 As shown, the method includes the following steps:

[0031] Step S101: Obtain the engine speed and output torque under the current operating conditions;

[0032] Optionally, this application does not limit the specific process of obtaining the output torque, and any feasible method is within the protection scope of this application.

[0033] For example, in one alternative implementation, such as Figure 2 As shown, step S101 above includes:

[0034] Step S1011: Obtain the percentage of the engine's output torque.

[0035] Step S1012: Calculate the product of the above output torque percentage and the reference torque to obtain the above output torque.

[0036] In the above implementation, the output torque is obtained by multiplying the obtained percentage of the engine's output torque by the reference torque.

[0037] To determine whether the decrease in engine speed is due to excessive engine load or abnormal engine operation, in one alternative implementation, such as... Figure 3 As shown, after step S101, the method further includes:

[0038] Step S201: Determine whether the above rotational speed is less than a preset rotational speed threshold;

[0039] Step S202: If the speed is less than the preset speed threshold, send a notification of engine malfunction.

[0040] In the above embodiments, the preset speed threshold is the minimum speed of the engine when the engine is working normally. When the engine speed is less than the preset speed threshold, the engine is determined to be in abnormal operation.

[0041] To avoid repeated adjustments to the hydraulic pump's suction power, in one optional implementation, such as... Figure 4 As shown, prior to step S101, the method further includes:

[0042] Step S301: Obtain the load rate of the engine.

[0043] Step S302: When the load rate is less than the preset load rate, the inhalation power remains unchanged.

[0044] In the above embodiments, when the engine load rate is less than the preset load rate, it is determined that the engine speed is not limited and there is no need to adjust the suction power of the hydraulic pump. When the engine load rate is greater than or equal to the preset load rate, it is determined that the engine speed is limited and it is necessary to adjust the suction power of the hydraulic pump to increase the engine speed.

[0045] It should be noted that this application determines that the engine speed is limited only when the engine load rate at each time point within the predetermined time period is greater than or equal to the preset load rate. This is to avoid adjusting the hydraulic pump's suction power when the engine speed is limited for a short time, which would cause the hydraulic pump to adjust repeatedly and result in a worse driving experience. This application uses the PT1 filtering method to filter out invalid load rates.

[0046] Step S102: When the speed is less than the preset speed, determine whether the speed and the output torque conform to the first mapping relationship, where the first mapping relationship is the external characteristic curve of the engine.

[0047] To further avoid repeated adjustments to the hydraulic pump's suction power, in another alternative implementation, such as... Figure 5 As shown, prior to step S102, the method further includes:

[0048] Step S401: Calculate the difference between the above-mentioned rotational speed and the preset rotational speed to obtain the above-mentioned rotational speed difference;

[0049] Step S402: When the above-mentioned speed difference is less than the preset speed difference, the above-mentioned intake power remains unchanged.

[0050] In the above embodiments, if the current engine speed difference is less than the preset speed difference, it is determined that the engine speed drop is not significant. The engine can quickly adjust its own speed, and the impact on the whole vehicle is smaller. At this time, it is not necessary to adjust the suction power of the hydraulic pump.

[0051] Step S103: When the speed and the output torque do not conform to the first mapping relationship, the intake power is adjusted to the first target intake power according to the speed difference and the second mapping relationship, so as to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target intake power under historical operating conditions.

[0052] In an optional implementation, to make the engine speed recovery obvious, such as Figure 6 As shown, after step S102, the method further includes:

[0053] Step S501: When the above-mentioned speed and the above-mentioned output torque meet the above-mentioned first mapping relationship, the above-mentioned intake power is adjusted to the above-mentioned second target intake power according to the above-mentioned speed difference and the third mapping relationship, so as to increase the above-mentioned speed to the above-mentioned preset speed. The above-mentioned third mapping relationship is the mapping relationship between the above-mentioned speed difference and the above-mentioned second target intake power under historical operating conditions.

[0054] In the above embodiments, when the engine speed and output torque conform to the engine's external characteristic curve, it is determined that the reason for limiting the engine speed is the limitation of the engine's external characteristics. The engine has already exerted its maximum capacity. At this time, based on the speed difference and the third mapping relationship, the suction power of the hydraulic pump is adjusted to the second target suction power to reduce the engine load and adjust the engine speed to the preset speed.

[0055] In order to further improve the engine speed recovery, in another optional embodiment, the first target intake power corresponding to the speed difference in the second mapping relationship is greater than the second target intake power corresponding to the same speed difference in the third mapping relationship.

[0056] In the above embodiments, if the reason for limiting the engine speed is the limitation of the engine's external characteristics, then the engine has already exerted its maximum capacity. It is necessary to significantly reduce the suction power of the hydraulic pump to quickly increase the engine speed and avoid engine stalling due to excessively low engine speed. If the reason for limiting the engine speed is insufficient engine intake air volume, then the engine still has the ability to adjust its own speed. In this case, it is necessary to slightly reduce the suction power of the hydraulic pump to increase the engine speed. That is, for the same speed difference, the speed needs to be increased to the preset speed. Compared with the case where the engine speed is limited by insufficient engine intake air volume, the suction power of the hydraulic pump needs to be reduced more significantly when the engine speed is limited by external characteristics.

[0057] Furthermore, in order to further significantly restore the engine speed, in another optional embodiment, the speed difference in the second mapping relationship is negatively correlated with the first target intake power, and the speed difference in the third mapping relationship is negatively correlated with the second target intake power.

[0058] In the above embodiments, when the engine intake air volume is insufficient to limit the engine speed or the engine speed is limited by the external characteristics of the engine, the larger the speed difference, the more obvious the speed drop. Therefore, when the speed difference is larger, the hydraulic pump suction power needs to be reduced more significantly to increase the speed to the preset speed.

[0059] In the above-described method for adjusting the suction power of the hydraulic pump, the hydraulic pump is the load of the engine and is directly connected to the engine. First, the engine speed and output torque under the current operating conditions are obtained. Then, if the speed is less than a preset speed, it is determined whether the speed and the output torque conform to a first mapping relationship, which is the external characteristic curve of the engine. Finally, if the speed and the output torque do not conform to the first mapping relationship, the suction power is adjusted to a first target suction power based on the speed difference and a second mapping relationship to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical operating conditions. The preset speed in this method is the target speed of the engine. When the engine speed is lower than the preset speed, it is determined that the engine speed cannot reach the target speed. If the engine speed and output torque do not conform to the engine's external characteristic curve at this time, it is determined that the reason for limiting the engine speed is insufficient engine intake. At this time, based on the mapping relationship between the speed difference and the speed difference obtained from historical operating conditions and the suction power of the hydraulic pump, the suction power of the hydraulic pump is adjusted to increase the engine speed. This method solves the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when insufficient engine intake limits the engine speed.

[0060] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0061] This application also provides a device for adjusting the suction power of a hydraulic pump. It should be noted that this device can be used to execute the method for adjusting the suction power of a hydraulic pump provided in this application. The following describes the device for adjusting the suction power of a hydraulic pump provided in this application.

[0062] Figure 7 This is a schematic diagram of a hydraulic pump suction power adjustment device according to an embodiment of this application. Figure 7 As shown, the device includes:

[0063] Acquisition unit 10 acquires the engine speed and output torque under the current operating conditions;

[0064] Optionally, this application does not limit the specific process of obtaining the output torque, and any feasible method is within the protection scope of this application.

[0065] For example, in one optional implementation, the acquisition unit includes:

[0066] The module obtains the percentage of the engine's output torque.

[0067] The calculation module calculates the product of the above output torque percentage and the reference torque to obtain the above output torque.

[0068] In the above implementation, the output torque is obtained by multiplying the obtained percentage of the engine's output torque by the reference torque.

[0069] To determine whether the decrease in engine speed is due to excessive engine load or abnormal engine operation, in one optional embodiment, the above-mentioned device further includes:

[0070] The unit determines whether the aforementioned rotational speed is greater than a preset rotational speed threshold.

[0071] The sending unit sends a notification of engine malfunction when the speed is less than the preset speed threshold.

[0072] In the above embodiments, the preset speed threshold is the minimum speed of the engine when the engine is working normally. When the engine speed is less than the preset speed threshold, the engine is determined to be in abnormal operation.

[0073] To avoid repeated adjustments to the suction power of the hydraulic pump, in an optional embodiment, the above-mentioned device further includes:

[0074] The first acquisition unit acquires the load rate of the aforementioned engine;

[0075] The first processing unit maintains the above-mentioned inhalation power unchanged when the above-mentioned load rate is less than the preset load rate.

[0076] In the above embodiments, when the engine load rate is less than the preset load rate, it is determined that the engine speed is not limited and there is no need to adjust the suction power of the hydraulic pump. When the engine load rate is greater than or equal to the preset load rate, it is determined that the engine speed is limited and it is necessary to adjust the suction power of the hydraulic pump to increase the engine speed.

[0077] It should be noted that this application determines that the engine speed is limited only when the engine load rate at each time point within the predetermined time period is greater than or equal to the preset load rate. This is to avoid adjusting the hydraulic pump's suction power when the engine speed is limited for a short time, which would cause the hydraulic pump to adjust repeatedly and result in a worse driving experience. This application uses the PT1 filtering method to filter out invalid load rates.

[0078] The judgment unit 20 determines whether the speed and the output torque conform to a first mapping relationship when the speed is less than the preset speed. The first mapping relationship is the external characteristic curve of the engine.

[0079] To further avoid repeated adjustments to the hydraulic pump's suction power, in another optional embodiment, the above-mentioned device further includes:

[0080] The calculation unit calculates the difference between the above-mentioned rotational speed and the preset rotational speed to obtain the above-mentioned rotational speed difference.

[0081] The second processing unit maintains the above-mentioned inhalation power unchanged when the above-mentioned speed difference is less than the preset speed difference.

[0082] In the above embodiments, if the current engine speed difference is less than the preset speed difference, it is determined that the engine speed drop is not significant. The engine can quickly adjust its own speed, and the impact on the whole vehicle is smaller. At this time, it is not necessary to adjust the suction power of the hydraulic pump.

[0083] The processing unit 30 adjusts the intake power to a first target intake power based on the speed difference and the output torque when the speed and the output torque do not conform to the first mapping relationship, thereby increasing the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target intake power under historical operating conditions.

[0084] In an optional embodiment, to make the engine speed recovery more noticeable, the above-mentioned device further includes:

[0085] The third processing unit, when the speed and the output torque conform to the first mapping relationship, adjusts the intake power to the second target intake power according to the speed difference and the third mapping relationship, so as to increase the speed to the preset speed. The third mapping relationship is the mapping relationship between the speed difference and the second target intake power under historical operating conditions.

[0086] In the above embodiments, when the engine speed and output torque conform to the engine's external characteristic curve, it is determined that the reason for limiting the engine speed is the limitation of the engine's external characteristics. The engine has already exerted its maximum capacity. At this time, based on the speed difference and the third mapping relationship, the suction power of the hydraulic pump is adjusted to the second target suction power to reduce the engine load and adjust the engine speed to the preset speed.

[0087] In order to further improve the engine speed recovery, in another optional embodiment, the first target intake power corresponding to the speed difference in the second mapping relationship is greater than the second target intake power corresponding to the same speed difference in the third mapping relationship.

[0088] In the above embodiments, if the reason for limiting the engine speed is the limitation of the engine's external characteristics, then the engine has already exerted its maximum capacity. It is necessary to significantly reduce the suction power of the hydraulic pump to quickly increase the engine speed and avoid engine stalling due to excessively low engine speed. If the reason for limiting the engine speed is insufficient engine intake air volume, then the engine still has the ability to adjust its own speed. In this case, it is necessary to slightly reduce the suction power of the hydraulic pump to increase the engine speed. That is, for the same speed difference, the speed needs to be increased to the preset speed. Compared with the case where the engine speed is limited by insufficient engine intake air volume, the suction power of the hydraulic pump needs to be reduced more significantly when the engine speed is limited by external characteristics.

[0089] Furthermore, in order to further significantly restore the engine speed, in another optional embodiment, the speed difference in the second mapping relationship is negatively correlated with the first target intake power, and the speed difference in the third mapping relationship is negatively correlated with the second target intake power.

[0090] In the above embodiments, when the engine intake air volume is insufficient to limit the engine speed or the engine speed is limited by the external characteristics of the engine, the larger the speed difference, the more obvious the speed drop. Therefore, when the speed difference is larger, the hydraulic pump suction power needs to be reduced more significantly to increase the speed to the preset speed.

[0091] In the aforementioned hydraulic pump suction power adjustment device, the hydraulic pump is the load of the engine and is directly connected to the engine. The acquisition unit is used to acquire the engine speed and output torque under the current operating conditions. The judgment unit is used to determine whether the engine speed and output torque conform to a first mapping relationship when the engine speed is less than a preset speed. The first mapping relationship is the external characteristic curve of the engine. The processing unit is used to adjust the suction power to a first target suction power based on the speed difference and a second mapping relationship when the engine speed and output torque do not conform to the first mapping relationship, thereby increasing the engine speed to the preset speed. The speed difference is the difference between the engine speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical operating conditions. The preset speed in this device is the target speed of the engine. When the engine speed is lower than the preset speed, it is determined that the engine speed cannot reach the target speed. If the engine speed and output torque do not conform to the engine's external characteristic curve at this time, it is determined that the reason for limiting the engine speed is insufficient engine intake air volume. At this time, based on the mapping relationship between the speed difference and the speed difference obtained from historical operating conditions and the suction power of the hydraulic pump, the suction power of the hydraulic pump is adjusted to increase the engine speed. This device solves the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when insufficient engine intake limits the engine speed.

[0092] The aforementioned hydraulic pump suction power adjustment device includes a processor and a memory. The aforementioned acquisition unit, judgment unit, and processing unit are all stored as program units in the memory, and the processor executes the aforementioned program units stored in the memory to realize the corresponding functions.

[0093] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured. By adjusting kernel parameters, the problem in existing technologies where insufficient engine intake limits engine speed cannot be determined regarding the adjustment value of the hydraulic pump's suction power to quickly restore engine speed can be solved.

[0094] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0095] This application provides a computer-readable storage medium including a stored program, wherein when the program is executed by a processor, the processor executes the method for adjusting the suction power of the hydraulic pump.

[0096] This application provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0097] Step S101: Obtain the engine speed and output torque under the current operating conditions;

[0098] Step S102: When the speed is less than the preset speed, determine whether the speed and the output torque conform to the first mapping relationship, where the first mapping relationship is the external characteristic curve of the engine.

[0099] Step S103: When the speed and the output torque do not conform to the first mapping relationship, the intake power is adjusted to the first target intake power according to the speed difference and the second mapping relationship, so as to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target intake power under historical operating conditions.

[0100] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0101] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0102] Step S101: Obtain the engine speed and output torque under the current operating conditions;

[0103] Step S102: When the speed is less than the preset speed, determine whether the speed and the output torque conform to the first mapping relationship, where the first mapping relationship is the external characteristic curve of the engine.

[0104] Step S103: When the speed and the output torque do not conform to the first mapping relationship, the intake power is adjusted to the first target intake power according to the speed difference and the second mapping relationship, so as to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target intake power under historical operating conditions.

[0105] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units described above can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0107] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0108] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0109] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a computer-readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned computer-readable storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0110] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0111] 1) In the hydraulic pump suction power adjustment method of this application, the hydraulic pump is the load of the engine and is directly connected to the engine. First, the engine speed and output torque under the current working condition are obtained. Then, if the speed is less than the preset speed, it is determined whether the speed and the output torque conform to a first mapping relationship, which is the external characteristic curve of the engine. Finally, if the speed and the output torque do not conform to the first mapping relationship, the suction power is adjusted to a first target suction power according to the speed difference and the second mapping relationship to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical working conditions. The preset speed in this method is the target speed of the engine. When the engine speed is lower than the preset speed, it is determined that the engine speed cannot reach the target speed. If the engine speed and output torque do not conform to the engine's external characteristic curve at this time, it is determined that the reason for limiting the engine speed is insufficient engine intake. At this time, based on the mapping relationship between the speed difference and the speed difference obtained from historical operating conditions and the suction power of the hydraulic pump, the suction power of the hydraulic pump is adjusted to increase the engine speed. This method solves the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when insufficient engine intake limits the engine speed.

[0112] 2) In the hydraulic pump suction power adjustment device of this application, the hydraulic pump is the load of the engine and is directly connected to the engine. The acquisition unit is used to acquire the engine speed and output torque under the current working condition. The judgment unit is used to determine whether the speed and the output torque conform to a first mapping relationship when the speed is less than a preset speed. The first mapping relationship is the external characteristic curve of the engine. The processing unit is used to adjust the suction power to a first target suction power according to the speed difference and the second mapping relationship when the speed and the output torque do not conform to the first mapping relationship, so as to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed. The second mapping relationship is the mapping relationship between the speed difference and the first target suction power under historical working conditions. The preset speed in this device is the target speed of the engine. When the engine speed is lower than the preset speed, it is determined that the engine speed cannot reach the target speed. If the engine speed and output torque do not conform to the engine's external characteristic curve at this time, it is determined that the reason for limiting the engine speed is insufficient engine intake air volume. At this time, based on the mapping relationship between the speed difference and the speed difference obtained from historical operating conditions and the suction power of the hydraulic pump, the suction power of the hydraulic pump is adjusted to increase the engine speed. This device solves the problem in the prior art that it is impossible to determine the adjustment value of the hydraulic pump suction power that can quickly restore the engine speed when insufficient engine intake limits the engine speed.

[0113] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for adjusting the suction power of a hydraulic pump, characterized in that, The hydraulic pump is a load on the engine and is directly connected to the engine. The method includes: Obtain the engine speed and output torque under the current operating conditions; If the rotational speed is less than a preset rotational speed, it is determined whether the rotational speed and the output torque conform to a first mapping relationship, wherein the first mapping relationship is the external characteristic curve of the engine; If the rotational speed and the output torque do not conform to the first mapping relationship, the inhalation power is adjusted to the first target inhalation power according to the rotational speed difference and the second mapping relationship, so as to increase the rotational speed to the preset rotational speed. The rotational speed difference is the difference between the rotational speed and the preset rotational speed, and the second mapping relationship is the mapping relationship between the rotational speed difference and the first target inhalation power under historical operating conditions. After determining whether the rotational speed and the output torque conform to the first mapping relationship, the method further includes: when the rotational speed and the output torque conform to the first mapping relationship, adjusting the intake power to a second target intake power according to the rotational speed difference and a third mapping relationship, so as to increase the rotational speed to the preset rotational speed, wherein the third mapping relationship is the mapping relationship between the rotational speed difference and the second target intake power under historical operating conditions; The first target inhalation power corresponding to the speed difference in the second mapping relationship is greater than the second target inhalation power corresponding to the same speed difference in the third mapping relationship.

2. The adjustment method according to claim 1, characterized in that, In the second mapping relationship, the speed difference is negatively correlated with the first target inhalation power, and in the third mapping relationship, the speed difference is negatively correlated with the second target inhalation power.

3. The adjustment method according to claim 1, characterized in that, Before obtaining the engine speed and output torque under the current operating conditions, the method further includes: Obtain the load rate of the engine; When the load rate is less than the preset load rate, the inhalation power remains unchanged.

4. The adjustment method according to claim 1, characterized in that, Before determining whether the rotational speed and the output torque conform to the first mapping relationship, the method further includes: Calculate the difference between the rotational speed and the preset rotational speed to obtain the rotational speed difference; When the rotation speed difference is less than the preset rotation speed difference, the inhalation power remains unchanged.

5. The method according to claim 1, characterized in that, The method for obtaining the output torque includes: Obtain the percentage of the engine's output torque; The output torque is obtained by multiplying the percentage of the output torque by the reference torque.

6. The adjustment method according to claim 1, characterized in that, After obtaining the engine speed and output torque under the current operating conditions, the method further includes: Determine whether the rotational speed is less than a preset rotational speed threshold; If the engine speed is less than the preset speed threshold, a message notification of engine malfunction is sent.

7. A device for adjusting the suction power of a hydraulic pump, characterized in that, The hydraulic pump is a load on the engine and is directly connected to the engine. The device includes: The acquisition unit is used to acquire the engine speed and output torque under the current operating conditions; The judgment unit is used to determine whether the speed and the output torque conform to a first mapping relationship when the speed is less than a preset speed, wherein the first mapping relationship is the external characteristic curve of the engine; The processing unit is configured to adjust the intake power to a first target intake power based on the speed difference and the output torque when the speed and the output torque do not conform to the first mapping relationship, so as to increase the speed to the preset speed. The speed difference is the difference between the speed and the preset speed, and the second mapping relationship is the mapping relationship between the speed difference and the first target intake power under historical operating conditions. The device further includes: a third processing unit, configured to, after determining whether the rotational speed and the output torque conform to a first mapping relationship, adjust the inhalation power to the second target inhalation power according to the rotational speed difference and a third mapping relationship, so as to increase the rotational speed to the preset rotational speed, wherein the third mapping relationship is the mapping relationship between the rotational speed difference and the second target inhalation power under historical operating conditions; The first target inhalation power corresponding to the speed difference in the second mapping relationship is greater than the second target inhalation power corresponding to the same speed difference in the third mapping relationship.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the processor performs the method for adjusting the suction power of the hydraulic pump according to any one of claims 1 to 6.

9. A hydraulic pump suction power adjustment system, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for performing the adjustment of hydraulic pump suction power as described in any one of claims 1 to 6.

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