Harvester energy-saving control method and device, harvester and machine readable storage medium

Abstract

The invention discloses a harvester energy-saving control method and device, a harvester and a machine readable storage medium, and relates to the technical field of agricultural machinery, the harvester comprises an engine and an execution mechanism, and the harvester energy-saving control method comprises the steps that in response to user operation, the harvester is switched into an energy-saving mode; obtaining the state of an executing mechanism, wherein the executing mechanism comprises at least one of a first clutch, a second clutch and a walking handle; and switching the state of the engine according to the state of the execution mechanism. According to the method, the harvester is switched into the energy-saving mode in response to the user operation, so that the state of the engine is automatically switched according to the state of the executing mechanism to achieve the energy-saving effect of the harvester, an operator does not need to manually switch the gear of the engine, and the operation convenience of the harvester is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and specifically relates to a method and device for energy-saving control of a harvester, a harvester, and a machine-readable storage medium. Background Art

[0002] A harvester is an agricultural machinery device used for harvesting crops, mainly for cutting ripe crops from farmland and collecting and processing them. In the prior art, the engine gear of a harvester usually needs to be manually switched, that is, the operator needs to manually control and switch the engine gear by operating the clutch and the shift lever. In the harvesting scenario, the above situation where the operator needs to manually switch the engine gear will reduce the convenience of operating the harvester. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a method and device for energy-saving control of a harvester, a harvester, and a machine-readable storage medium, so as to solve the problem that the convenience of operating the harvester is reduced when the operator manually switches the engine gear in the prior art.

[0004] To achieve the above purpose, in the first aspect of the present application, a method for energy-saving control of a harvester is provided. The harvester includes an engine and an actuator, and the method for energy-saving control of the harvester includes:

[0005] In response to a user operation, switch the harvester to an energy-saving mode;

[0006] Obtain the state of the actuator, where the actuator includes at least one of a first clutch, a second clutch, and a travel handle;

[0007] Switch the state of the engine according to the state of the actuator.

[0008] In the embodiments of the present application, the switching the state of the engine according to the state of the actuator includes:

[0009] Obtain the travel position of the travel handle;

[0010] When the travel position of the travel handle is not in the centered position, and the state of the first clutch or the second clutch is in the engaged state, switch the gear of the engine to a heavy-load gear and switch the speed of the engine to a first preset speed, where the first clutch and the second clutch are used for different working scenarios of the harvester.

[0011] In the embodiments of the present application, the switching the state of the engine according to the state of the actuator further includes:

[0012] When the stroke position of the walking handle is in the non-centered position and the states of the first clutch and the second clutch are both in the disengaged state, shift the gear of the engine to the medium load gear and switch the engine speed to the first preset speed.

[0013] In the embodiment of the present application, the actuator further includes a grain unloading clutch. The step of switching the state of the engine according to the state of the actuator further includes:

[0014] When the stroke position of the walking handle is in the centered position and the state of the grain unloading clutch is in the engaged state, switch the gear of the engine to the light load gear.

[0015] In the embodiment of the present application, the actuator includes a walking handle and a grain unloading clutch. The step of switching the state of the engine according to the state of the actuator includes:

[0016] When the duration of the grain unloading clutch being in the disengaged state reaches a preset duration and the stroke position of the walking handle is in the centered position, control the engine speed to be the second preset speed, where the second preset speed is less than the first preset speed.

[0017] In the embodiment of the present application, the harvester further includes a grain unloading cylinder. The step of switching the state of the engine according to the state of the actuator further includes:

[0018] When the state of the grain unloading cylinder is in the extended state, the stroke position of the walking handle is in the centered position, and the state of the grain unloading clutch is in the engaged state, control the engine speed to be the third preset speed.

[0019] In the embodiment of the present application, after controlling the engine speed to be the third preset speed, it includes:

[0020] Determine whether the throttle opening of the harvester changes;

[0021] When the throttle opening of the harvester changes, control the engine speed to be greater than the third preset speed, where the third preset speed is greater than the second preset speed.

[0022] The second aspect of the present application provides a harvester energy-saving control device, which is characterized by including:

[0023] A memory configured to store instructions; and

[0024] A processor configured to call the instructions from the memory and be capable of implementing the above-mentioned harvester energy-saving control method when executing the instructions.

[0025] The third aspect of the present application provides a harvester, which is characterized by including:

[0026] The above-mentioned energy-saving control device for the harvester.

[0027] The fourth aspect of the present application provides a machine-readable storage medium, which is characterized in that instructions are stored on the machine-readable storage medium, and the instructions are used to cause the machine to execute the above-mentioned energy-saving control method for the harvester.

[0028] Through the above technical solutions, the present application first responds to the user operation, switches the harvester to the energy-saving mode, and then automatically switches the state of the engine according to the state of the actuator to achieve the energy-saving effect of the harvester, and there is no need for the operator to manually switch the engine gear, effectively improving the convenience of operating the harvester.

[0029] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0030] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific implementation manners, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. In the drawings:

[0031] Figure 1 Schematically shows a flowchart of an energy-saving control method for a harvester according to an embodiment of the present application. Detailed Description of the Embodiments

[0032] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present application, and do not limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if the embodiments of the present application involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0035] Figure 1 Schematically shows a flowchart of a method for controlling energy saving of a harvester according to an embodiment of the present application. As Figure 1 shown, an embodiment of the present application provides a method for controlling energy saving of a harvester. The harvester includes an engine and an actuator, and the method may include the following steps.

[0036] S110: In response to a user operation, switch the harvester to an energy-saving mode.

[0037] In this embodiment, the harvester further includes a display screen, enabling the user to select whether the harvester enters the energy-saving mode through the display screen. Specifically, after the user selects through the display screen that the harvester enters the energy-saving mode, the display screen transmits an engine state switching command through the CAN bus, where the engine state switching command may be an engine gear switching command or an engine speed control command, so that the harvester performs engine gear switching or engine speed control according to the engine state switching command to achieve energy saving of the harvester.

[0038] S120: Obtain the state of the actuator, where the actuator includes at least one of a first clutch, a second clutch, and a travel handle.

[0039] The actuator of the harvester refers to various mechanical devices and components used to implement the harvesting operation, and may include at least one of a harvesting clutch, a threshing clutch, a grain unloading clutch, a travel handle, etc. Among them, the first clutch and the second clutch may be any one of the above clutches. For example, the first clutch may be a harvesting clutch, and the second clutch may be a threshing clutch. The first clutch is used to control the start and stop of the harvesting device of the harvester; the second clutch is used to control the start and stop of the threshing device of the harvester; the grain unloading clutch is used to control the start and stop of the grain unloading device.

[0040] The state of the actuator refers to the working state or operating condition of the actuator. For example, the state of the first clutch may be an engaged state or a disengaged state, the state of the second clutch may be an engaged state or a disengaged state, and the state of the grain unloading clutch may be an engaged state or a disengaged state.

[0041] S130: Switch the state of the engine according to the state of the actuator.

[0042] The state of the engine refers to the working state or operating condition of the engine. For example, the state of the engine can be gear shifting or speed change, etc.

[0043] Since the actuator is various mechanical devices and components used to implement the harvesting operation, and the engine is used to provide power for the actuator, the state of the engine is related to the actuator. The state of the engine can be switched according to the state of the actuator, so as to realize the automatic switching of the state of the engine according to the state of the actuator.

[0044] In this embodiment, first, in response to the user operation, the harvester is switched to the energy-saving mode, so as to automatically switch the state of the engine according to the state of the actuator to achieve the effect of energy saving of the harvester, and there is no need for the operator to manually switch the engine gear, effectively improving the convenience of operating the harvester.

[0045] In one implementation manner of this embodiment, switching the state of the engine according to the state of the actuator includes the following steps:

[0046] S131: Obtain the stroke position of the travel handle.

[0047] In specific implementation, the harvester usually has travel functions such as forward, backward and turning. The above functions are controlled by the travel handle. The travel handle refers to the handle or joystick used to control the travel direction and speed of the harvester. By operating the travel handle, the driver can control the travel direction and speed of the harvester to adapt to different operation requirements and terrain conditions.

[0048] The stroke position of the travel handle includes the forward position, the centered position and the backward position. When the stroke position of the travel handle is the forward position, the harvester will travel forward; when the stroke position of the travel handle is the centered position, the harvester will stop traveling; when the stroke position of the travel handle is the backward position, the harvester will travel backward.

[0049] S132: When the stroke position of the travel handle is not in the centered position and the state of the first clutch or the second clutch is in the engaged state, switch the gear of the engine to the heavy-load gear and switch the speed of the engine to the first preset speed, where the first clutch and the second clutch are used for different working scenarios of the harvester.

[0050] The first clutch is used to control the clutch of the harvesting device on the harvester. The harvesting device may include components such as a cutter drum, cutter arms, and blades for cutting crops, corresponding to the crop cutting scenario of the harvester. When the first clutch is engaged, the first clutch is used to transmit the power of the engine to the harvesting device, causing it to start rotating or swinging, thereby achieving the cutting operation; when the first clutch is disengaged, the harvesting device stops working.

[0051] The second clutch is used to control the clutch of the threshing device on the harvester. The threshing device is used to separate the grains of the harvested crops from the straw, corresponding to the scenario of separating crop grains from straw on the harvester. When the second clutch is engaged, the second clutch is used to transmit the power of the engine to the threshing device, causing it to start working; when the second clutch is disengaged, the threshing device stops working.

[0052] The state of the first clutch being in the engaged state indicates that the first clutch is engaged, and the state of the second clutch being in the engaged state indicates that the second clutch is engaged.

[0053] When the travel position of the walking handle is not in the centered position and the state of the first clutch or the second clutch is in the engaged state, it indicates that the working scenario of the harvester is in the harvesting or threshing scenario. Since the harvesting device and the threshing device need to overcome greater resistance and load during operation, more power is required to ensure their normal operation. At this time, in order to provide sufficient power and torque to cope with the greater resistance and load, the gear of the engine needs to be switched to the heavy-duty gear, and the engine speed needs to be switched to the first preset speed. Specifically, the heavy-duty gear can be the power gear, which is used to provide greater output power and torque to adapt to the harvesting or threshing scenario.

[0054] When the engine is in the heavy-duty gear, it indicates that the engine is working under a high-load state, such as in the case of harvesting or threshing. In the heavy-duty gear, the engine needs to provide more power and torque to drive the various components of the harvester to cope with the greater working load. Therefore, in order to meet the working requirements, the engine speed is usually relatively high.

[0055] In this embodiment, when the state of the first clutch or the second clutch is in the engaged state, the gear of the engine is automatically switched to the heavy-duty gear, and the engine speed is switched to the first preset speed, realizing the automatic switching of the engine gear without manually switching the engine gear, effectively improving the convenience of harvester operation.

[0056] In one implementation manner of this embodiment, according to the state of the actuator, switching the state of the engine further includes the following steps:

[0057] S133: When the travel position of the walking handle is in the non-centered position and the states of both the first clutch and the second clutch are in the disengaged state, shift the gear of the engine to the medium load gear and switch the engine speed to the first preset speed.

[0058] When the states of both the first clutch and the second clutch are in the disengaged state, it indicates that the working scenario of the harvester is neither in the harvesting scenario nor in the threshing scenario. At this time, the load on the engine is relatively reduced. In order to enable the engine to provide sufficient power while minimizing fuel consumption and emissions, in this embodiment, the gear of the engine is shifted to the medium load gear and the engine speed is switched to the first preset speed. Specifically, the medium load gear can be the economy gear, which is used to provide sufficient power while reducing the working load and fuel consumption of the engine, achieving the effect of energy conservation and emission reduction.

[0059] In this embodiment, when the states of both the first clutch and the second clutch are in the disengaged state, the gear of the engine is shifted to the medium load gear, which can effectively reduce fuel consumption and is beneficial to energy conservation and emission reduction.

[0060] In one implementation manner of this embodiment, the actuator further includes a walking handle and a grain unloading clutch. According to the state of the actuator, the state of the engine is switched, and the following steps are further included:

[0061] S134: When the travel position of the walking handle is in the centered position and the state of the grain unloading clutch is in the engaged state, switch the gear of the engine to the light load gear.

[0062] The grain unloading clutch refers to the clutch used to control the grain unloading device of the harvester. The grain unloading device is used to unload the crops harvested by the harvester from the grain unloading cylinder of the harvester. The grain unloading clutch is used to control the start and stop of the grain unloading device. The states of the grain unloading clutch include the engaged state and the disengaged state. When the state of the grain unloading clutch is in the engaged state, it indicates that the grain unloading device is in the operating state. When the state of the grain unloading clutch is in the disengaged state, it indicates that the grain unloading device is not in the operating state.

[0063] When the travel position of the walking handle is in the centered position and the state of the grain unloading clutch is in the engaged state, it indicates that the working scenario of the harvester is the parking and grain unloading scenario. At this time, the harvesting device and the threshing device of the harvester no longer need to operate. In order to save energy, reduce fuel consumption, and extend the service life of the harvester, the gear of the engine needs to be switched to the light load gear. Specifically, the light load gear can be the fuel-saving gear, which is used to reduce fuel consumption and emissions.

[0064] When the engine is in the light load gear, it indicates that the engine is operating under a lower load state. At this time, the load and fuel consumption of the engine can be reduced.

[0065] In this embodiment, when the travel position of the walking handle is in the neutral position and the unloading clutch is in the engaged state, the engine gear is switched to the light load gear to effectively reduce fuel consumption and extend the service life of the harvester.

[0066] In one implementation of this embodiment, the actuator includes a walking handle and an unloading clutch. According to the state of the actuator, the state of the engine is switched, including the following steps:

[0067] S1321: When the duration of the unloading clutch being in the disengaged state reaches a preset duration and the travel position of the walking handle is in the neutral position, control the engine speed to a second preset speed, where the second preset speed is less than the first preset speed.

[0068] When the duration of the unloading clutch being in the disengaged state reaches a preset duration and the travel position of the walking handle is in the neutral position, it indicates that the working scenario of the harvester is a temporary stop scenario, that is, the harvester is in a stopped state and not performing walking and unloading operations. In order to reduce the load and fuel consumption of the engine, it is necessary to control the engine speed to the second preset speed. Specifically, the second preset speed can be the idle speed. Specifically, the second preset speed is less than the first preset speed.

[0069] When the engine speed is at the idle speed, it indicates that the engine is at the lowest operating speed, and at this time, the fuel consumption is the least. In the temporary stop scenario, reducing the engine speed to the idle speed can effectively reduce fuel consumption and keep the engine in a standby state so that it can be operated at any time.

[0070] In this embodiment, when the duration of the unloading clutch being in the disengaged state reaches a preset duration and the travel position of the walking handle is in the neutral position, control the engine speed to the second preset speed to effectively reduce fuel consumption.

[0071] In one implementation of this embodiment, the harvester further includes an unloading cylinder. According to the state of the actuator, switching the state of the engine further includes the following steps:

[0072] S1322: When the state of the unloading cylinder is in the extended state, the travel position of the walking handle is in the neutral position, and the state of the unloading clutch is in the engaged state, control the engine speed to a third preset speed, where the third preset speed is greater than the second preset speed.

[0073] Specifically, the third preset speed is greater than the second preset speed.

[0074] The unloading cylinder is used to store the crops harvested by the harvesting device. The extension of the unloading cylinder indicates that the unloading cylinder starts to rotate to discharge the crops into the unloading device.

[0075] When the state of the grain unloading cylinder is the rotating-out state, the stroke position of the traveling handle is in the centered position, and the state of the grain unloading clutch is the engaged state, it indicates that the working scenario of the harvester is the parking grain unloading scenario, that is, the traveling of the harvester is in the stopped state and the grain unloading device is in the operating state. In order to provide sufficient power for the grain unloading cylinder to ensure its normal discharge of crops, it is necessary to control the engine speed at the third preset speed to ensure the normal rotation-out of the grain unloading cylinder while reducing fuel consumption. Specifically, the third preset speed can be medium speed, and the medium speed is between the idle speed and the maximum engine speed.

[0076] In this embodiment, when the state of the grain unloading cylinder is the rotating-out state, the stroke position of the traveling handle is in the centered position, and the state of the grain unloading clutch is the engaged state, controlling the engine speed at the third preset speed is beneficial to reducing fuel consumption and ensuring the normal rotation-out of the grain unloading cylinder.

[0077] In one implementation manner of this embodiment, after controlling the engine speed at the third preset speed, the following steps are included:

[0078] S1313: Determine whether the throttle opening of the harvester changes.

[0079] After controlling the engine speed at the third preset speed, if the throttle opening of the harvester changes, it indicates that the harvester is not in the temporary parking scenario and is about to move forward normally.

[0080] S1314: When the throttle opening of the harvester changes, control the engine speed to be greater than the third preset speed.

[0081] When the throttle opening of the harvester changes, since the engine speed in the temporary parking scenario is the idle speed, in order to ensure the normal movement of the harvester, it is necessary to release the idle speed of the engine, that is, control the engine speed to be greater than the third preset speed.

[0082] It should be noted that for the situation where the harvester is not in the temporary parking scenario and is about to move forward normally, it can also be judged by the position of the traveling handle. That is, when the position of the traveling handle changes, it indicates that the harvester is not in the temporary parking scenario and is about to move forward normally. At this time, control the engine speed to be greater than the third preset speed.

[0083] In this embodiment, when the throttle opening of the harvester changes, controlling the engine speed to be greater than the third preset speed realizes the automatic control of the engine speed and effectively improves the operation convenience of the harvester.

[0084] The embodiment of the present application also provides a harvester energy-saving control device, which may include:

[0085] A memory configured to store instructions; and

[0086] A processor configured to call instructions from the memory and capable of implementing the above-mentioned energy-saving control method for the harvester when executing the instructions.

[0087] An embodiment of the present application further provides a harvester, which may include:

[0088] A display screen;

[0089] The above-mentioned energy-saving control device for the harvester.

[0090] An embodiment of the present application further provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to cause the machine to execute the above-mentioned energy-saving control method for the harvester.

[0091] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0092] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0093] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0094] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 steps of the functions specified in one block or multiple blocks.

[0095] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0096] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash memory (flash RAM). The memory is an example of computer-readable media.

[0097] Computer-readable media includes permanent and non-permanent, removable and non-removable media and can be implemented by any method or technology for information storage. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0098] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, commodity or device including the element.

[0099] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for energy-saving control of a harvester, characterized in that, The harvester includes an engine and an actuator, and the energy-saving control method of the harvester includes: In response to a user operation, switching the harvester to an energy-saving mode; Obtaining the state of the actuator, where the actuator includes at least one of a first clutch, a second clutch, and a travel handle; Switching the state of the engine according to the state of the actuator.

2. The method according to claim 1, characterized in that, The switching the state of the engine according to the state of the actuator includes: Obtaining the stroke position of the travel handle; When the stroke position of the travel handle is not in the centered position and the state of the first clutch or the second clutch is in the engaged state, switching the gear of the engine to a heavy-load gear and switching the speed of the engine to a first preset speed, where the first clutch and the second clutch are used for different working scenarios of the harvester.

3. The method according to claim 2, characterized in that, The switching the state of the engine according to the state of the actuator further includes: When the stroke position of the travel handle is not in the centered position and the states of the first clutch and the second clutch are both in the disengaged state, switching the gear of the engine to a medium-load gear and switching the speed of the engine to the first preset speed.

4. The method according to claim 3, wherein The actuator further includes a grain unloading clutch, and the switching the state of the engine according to the state of the actuator further includes: When the stroke position of the travel handle is in the centered position and the state of the grain unloading clutch is in the engaged state, switching the gear of the engine to a light-load gear.

5. The method according to claim 2, wherein The actuator includes a travel handle and a grain unloading clutch, and the switching the state of the engine according to the state of the actuator includes: When the time length of the grain unloading clutch being in the disengaged state reaches a preset time length and the stroke position of the travel handle is in the centered position, controlling the speed of the engine to be a second preset speed, where the second preset speed is less than the first preset speed.

6. The method according to claim 5, wherein The harvester further includes a grain unloading cylinder, and the switching the state of the engine according to the state of the actuator further includes: When the state of the grain unloading cylinder is in the extended state, the stroke position of the travel handle is in the centered position, and the state of the grain unloading clutch is in the engaged state, controlling the speed of the engine to be a third preset speed, where the third preset speed is greater than the second preset speed.

7. The method according to claim 5, wherein After the controlling the speed of the engine to be the third preset speed, it includes: Determining whether the throttle opening of the harvester changes; When the throttle opening of the harvester changes, controlling the speed of the engine to be greater than the third preset speed.

8. An energy-saving control device for a harvester, characterized in that, It includes: A memory configured to store instructions; And A processor configured to call the instructions from the memory and capable of implementing the energy-saving control method of the harvester according to any one of claims 1 to 7 when executing the instructions.

9. A harvester, characterized in that, It includes: The energy-saving control device of the harvester according to claim 8.

10. A machine-readable storage medium, characterized in that, Instructions are stored on the machine-readable storage medium, and the instructions are used to cause the machine to execute the energy-saving control method for a harvester according to any one of claims 1 to 7.

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