Engineering machinery accelerator intelligent control method and engineering machinery

Abstract

The invention discloses an engineering machinery accelerator intelligent control method and engineering machinery. The engineering machinery accelerator intelligent control method comprises the steps that an angle detection device is used for detecting the rotation direction and the rotation angle of an entity rotary knob and sending a detection result to a controller; a controller is used for generating a control instruction according to the detection result of the angle detection device and sending the control instruction to an engine control module ECM; when the angle detection device detects that the entity rotary knob rotates in the first direction and the rotation angle reaches a first threshold angle every time, the controller enables the current accelerator gear to be increased by m gears, and the engine control module ECM controls the engine to execute the rotation speed corresponding to the increased accelerator gear, and when the angle detection device detects that the entity knob rotates in the second direction and the rotation angle reaches a second threshold angle every time, the controller reduces the current accelerator gear by n gears and controls the engine to execute the rotation speed corresponding to the reduced accelerator gear through the engine control module ECM.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to an intelligent throttle control method for engineering machinery and engineering machinery. Background Art

[0002] At present, the throttle used to control the engine speed of construction machinery is relatively traditional. For example, in some excavators, the throttle control method mostly adopts a throttle knob based on a traditional potentiometer. The throttle knob adopts a multi-speed mechanical adjustment control method, which has poor control stability, low throttle configuration flexibility, and poor intelligent control. Summary of the invention

[0003] The object of the present invention is to provide an intelligent throttle control method for engineering machinery with a more flexible adjustment mode and a higher intelligent control level.

[0004] The first aspect of the present invention discloses an intelligent throttle control method for engineering machinery, wherein the engineering machinery comprises a physical control device and an engine, wherein the control device comprises a knob, an angle detection device, a controller and an engine control module (ECM); the physical knob is used to be operated by a user to rotate in a first direction or in a second direction, wherein one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction, wherein the angle detection device is connected to the controller by signal, wherein the controller is connected to the engine control module (ECM) by signal, wherein the engine control module (ECM) is connected to the engine by signal, wherein the controller is connected to the engine control module (ECM) by signal, and wherein the controller is connected to the engine control module (ECM) by signal. The intelligent throttle control method for engineering machinery comprises:

[0005] The angle detection device is used to detect the rotation direction and rotation angle of the physical knob and send the detection result to the controller; the controller is used to generate a control instruction according to the detection result of the angle detection device and send it to the engine control module ECM; wherein, when the angle detection device detects that the physical knob rotates in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears and controls the engine through the engine control module ECM to execute the speed corresponding to the throttle gear after the gear is increased; when the angle detection device detects that the physical knob rotates in a second direction and each time the rotation angle reaches a second threshold angle, the controller reduces the current throttle gear by n gears and controls the engine through the engine control module ECM to execute the speed corresponding to the throttle gear after the gear is reduced.

[0006] In some embodiments, when the angle detection device detects that the physical knob rotates in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears, including: when the angle detection device detects that the physical knob rotating in the first direction changes the rotation direction to the second direction or stops rotating after a first threshold time, when it is detected that the physical knob rotates in the first direction again, the rotation angle of the physical knob rotating in the first direction is recalculated from the time it rotates in the first direction again; when the angle detection device detects that the physical knob rotating in the second direction changes the rotation direction to the first direction or stops rotating after a second threshold time, when it is detected that the physical knob rotates in the second direction again, the rotation angle of the physical knob in the second direction is recalculated from the time it rotates in the second direction again.

[0007] In some embodiments, the controller is further used to set a maximum gear number j corresponding to the maximum speed of the engine, and when the throttle gear reaches the highest gear, the controller is used to limit the throttle gear from continuing to increase.

[0008] In some embodiments, the controller is used to set the minimum speed and the maximum speed, and the engine control module ECM sends the current speed information of the engine to the controller. When the current speed of the engine reaches the maximum speed, the speed of the engine is restricted from continuing to increase. When the current speed of the engine reaches the minimum speed, the speed of the engine is restricted from continuing to decrease.

[0009] In some embodiments, the physical knob is also used to be pressed downward and automatically reset when pressed. The engineering machinery throttle intelligent control method also includes: using the controller to set a target gear number k. When the physical knob is pressed downward, the controller switches the current throttle gear to the kth gear, and controls the engine through the engine control module ECM to execute the throttle speed corresponding to the kth throttle gear.

[0010] In some embodiments, the engineering machinery also includes an electronic monitor connected to the controller signal, and the electronic monitor is provided with an analog knob for user operation, and the analog knob corresponds to the physical knob. When the analog knob is operated to rotate in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears. When the angle detection device detects that the physical knob rotates in a second direction and each time the rotation angle reaches a second threshold angle, the controller reduces the current throttle gear by n gears.

[0011] In some embodiments, the electronic monitor is further configured to operate to set a maximum gear number j and / or a target gear number k.

[0012] In some embodiments, the electronic monitor is further provided with a gear display interface for displaying various throttle gears of the engine, and the gear display interface is used to display the throttle gear currently selected by the user.

[0013] In some embodiments, the electronic monitor is also used to operate to set the maximum gear number j. The engineering machinery throttle intelligent control method also includes: using the controller to calculate and display the economic gear number under the current maximum gear number j according to the maximum gear number j set by the user.

[0014] In some embodiments, the electronic monitor is also used for the user to set a memory state and a non-memory state; in the memory state, the current throttle position of the engine is stored, and when the control device is restarted after power failure or the engine is restarted after shutdown, the controller sends a memory state instruction to the engine control module ECM, and after receiving the memory state instruction, the engine control module ECM controls the engine throttle position to be restored to the engine throttle position before restarting; in the non-memory state, when the control device is restarted after power failure or the engine is restarted after shutdown, the controller does not send a memory state instruction to the engine control module ECM.

[0015] The second aspect of the present invention is a construction machinery, which is applied to any of the construction machinery throttle intelligent control methods described above, and the construction machinery includes a physical control device and an engine, the control device includes a knob, an angle detection device, a controller and an engine control module (ECM); the physical knob is used to be operated by a user to rotate in a first direction or a second direction, one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction, the angle detection device is connected to the controller signal, the controller is connected to the engine control module (ECM) signal, the engine control module (ECM) is connected to the engine signal, and the controller is connected to the engine control module (ECM) signal.

[0016] Based on the intelligent throttle control method for engineering machinery provided by the present invention, the rotation direction and rotation angle of the physical knob are detected by an angle detection device, and the controller increases or decreases the throttle gear and controls the throttle speed of the engine to execute the corresponding gear according to the detection result of the angle detection device. It can more sensitively detect and respond to the operator's throttle gear increase or decrease requirements and control the throttle gear more intelligently.

[0017] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure and principle of an intelligent throttle control method for engineering machinery according to an embodiment of the present invention;

[0020] Figure 2 The figure is a flow chart of an intelligent throttle control method for engineering machinery according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] like Figure 1 and Figure 2 As shown, in the intelligent control method for the throttle of an engineering machinery of this embodiment, the engineering machinery includes a physical control device and an engine 101, and the control device includes a physical knob 104, an angle detection device, a controller 103 and an engine control module ECM 102. The physical knob 104 is used to be operated by a user to rotate in a first direction or in a second direction, one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction, that is, when the user controls the throttle, the throttle is controlled by rotating the physical knob. The angle detection device is connected to the controller 103 by signal, and the angle detection device includes a rotary encoder and other detection devices that can measure the angle change of the physical knob.

[0027] The controller 103 is connected to the engine control module ECM 102 by signal, the engine control module ECM 102 is connected to the engine 101 by signal, and the controller 103 is connected to the engine control module ECM 102 by signal. The controller can be a general processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components or any appropriate combination thereof for performing the functions described in the present invention. ECM is the abbreviation of Engine Control Module, i.e., engine control module. The engine control module ECM is an electronic control system for monitoring and controlling the operation of the engine. Each signal connection can be realized by bus connection and / or wireless connection, thereby realizing signal transmission.

[0028] The intelligent control method of the throttle of construction machinery includes:

[0029] The angle detection device is used to detect the rotation direction and rotation angle of the physical knob 104 and send the detection result to the controller 103; the controller 103 generates a control instruction according to the detection result of the angle detection device and sends it to the engine control module ECM 102; wherein, when the angle detection device detects that the physical knob 104 rotates in the first direction and the rotation angle reaches a first threshold angle each time, the controller 103 increases the current throttle gear by m gears and controls the engine 101 to execute the speed corresponding to the throttle gear after the gear is increased through the engine control module ECM 102; when the angle detection device detects that the physical knob 104 rotates in the second direction and the rotation angle reaches a second threshold angle each time, the controller 103 reduces the current throttle gear by n gears and controls the engine 101 to execute the speed corresponding to the throttle gear after the gear is reduced through the engine control module ECM 102. If the user needs to change the current throttle gear, it can be achieved by rotating the physical knob. During operation, if the rotation is in a first direction, for example, the first direction is clockwise and the second direction is counterclockwise, when the angle detection device detects that the angle at which the user rotates the physical knob in the first direction reaches a first threshold angle, the controller 103 increases the current throttle gear by m gears, where m can be 1 or other integers, and then sends the throttle speed to be executed by the engine to the engine control module ECM 102, and the engine control module ECM 102 controls the engine to adjust the speed to the throttle speed corresponding to the changed throttle gear. When the angle of the physical knob rotated by the user reaches multiple first threshold angles, for example, 3, the controller 103 increases the current throttle gear by 3m gears, and controls the engine to adjust the speed to the throttle speed corresponding to the changed throttle gear through the engine control module ECM 102. During operation, if the angle of the physical knob rotated in the second direction by the user reaches a second threshold angle, the controller 103 reduces the current throttle gear by n gears, where n can be 1 or other integers, and then sends the throttle speed to be executed by the engine to the engine control module ECM 102, and the engine control module ECM 102 controls the engine to adjust the speed to the throttle speed corresponding to the changed throttle gear. When the angle of the physical knob rotated by the user reaches multiple second threshold angles, for example, 3, the controller 103 reduces the current throttle gear by 3n gears, and controls the engine to adjust the speed to the throttle speed corresponding to the changed throttle gear through the engine control module ECM 102. The first threshold angle and the second threshold angle can be set to be the same or different, for example, both are set to 10°. The values ​​of m and n can be set to be the same or different. In the embodiment shown in the figure, the values ​​of m and n are set to 1.

[0030] In the intelligent throttle control method for engineering machinery of the present embodiment, the physical knob does not need to correspond one-to-one with the position of the throttle gear. The throttle gear can be increased or decreased by only detecting the rotation direction and rotation angle of the physical knob 104 through the angle detection device. The setting of the physical knob is more flexible, and can more sensitively detect and respond to the operator's demand for increasing or decreasing the throttle gear, making it easier for the operator to operate flexibly and control the throttle gear more intelligently.

[0031] In some embodiments, when the angle detection device detects that the physical knob 104 rotates along the first direction and each time the rotation angle reaches a first threshold angle, the controller 103 increases the current throttle gear by m gears, including: when the angle detection device detects that the physical knob 104 rotating along the first direction changes the rotation direction to the second direction or stops rotating after a first threshold time, when it is detected that the physical knob 104 rotates along the first direction again, the rotation angle of the physical knob 104 rotating along the first direction is recalculated from the time it rotates along the first direction again. If the operator operates the physical knob, continuously rotates in the first direction to increase the throttle gear and then stops rotating or changes direction to reduce the throttle gear, since the angle of the physical knob rotating in the first direction may exceed a partial angle after reaching one or more first threshold angles, but the exceeded angle is not enough to reach a first threshold angle, when the rotation direction is changed to the second direction, when the rotation direction is changed to the first direction again, the rotation angle of the physical knob in the first direction is calculated again from the change again, that is, the partial angle exceeded last time is reset to zero and not counted; when the rotation stops for more than the first threshold time and then continues to rotate in the first direction, the rotation angle of the physical knob in the first direction is calculated again from the continued rotation, that is, the partial angle before stopping the rotation is reset to zero and not counted. The first threshold time can be set to multiple times such as 0.5s, which can be set according to the user's operating habits. Similarly, when the angle detection device detects that the physical knob 104 rotating in the second direction changes its rotation direction to the first direction or stops rotating for a second threshold time, when it is detected that the physical knob 104 rotates in the second direction again, the angle of rotation of the physical knob 104 in the second direction is calculated again from the time of rotating in the second direction again. The second threshold time can be set to multiple times such as 0.5s like the first threshold time, and can be set according to the user's operating habits. This embodiment can more accurately judge the user's willingness to change the throttle gear, better adapt to the user's habits, and make it more convenient for the user to operate.

[0032] In some embodiments, the intelligent throttle control method for engineering machinery also includes using the controller 103 to set the highest gear number j corresponding to the maximum speed of the engine 101, and when the throttle gear reaches the highest gear, the controller 103 is used to limit the throttle gear from continuing to increase. In this embodiment, the engine speed can be divided into different gear numbers by setting the highest gear number j, that is, the jth gear is the highest gear number. For example, when the highest gear number j is set to 3, the engine speed is divided into 3 gears from 1 to 3, and the corresponding 3rd gear is the highest gear. When the highest gear number j is set to 5, the engine speed is divided into 5 gears, and the 5th gear is the highest gear. When the throttle gear changed by the user reaches the highest gear, the user continues to increase the gear controller and the throttle gear will no longer continue to increase.

[0033] In some embodiments, the intelligent throttle control method for construction machinery also includes using the controller 103 to set the minimum speed and the maximum speed, and the engine control module ECM 102 sends the current speed information of the engine 101 to the controller 103. When the current speed of the engine 101 reaches the maximum speed, the speed of the engine 101 is limited to continue to increase. When the current speed of the engine 101 reaches the minimum speed, the speed of the engine 101 is limited to continue to decrease.

[0034] In some embodiments, the physical knob 104 is also used to be pressed downward and automatically reset under pressure. The physical knob 104 can be automatically reset by setting a reset spring. After the physical knob 104 compresses the reset spring, the elastic force of the reset spring automatically resets the physical knob after the physical knob is released. The intelligent control method of the engineering machinery throttle also includes: using the controller 103 to set the target gear number k. When the physical knob 104 is pressed downward, the controller 103 switches the current throttle gear to the kth gear, and controls the engine 101 to execute the throttle speed corresponding to the kth throttle gear through the engine control module ECM102. The target gear can be a gear commonly used by the user. By pressing the physical knob, the user's commonly used gear can be directly reached, making the operation more convenient and efficient.

[0035] In some embodiments, the engineering machinery further includes an electronic monitor 105 connected to the controller 103 by signal. The electronic monitor 105 is provided with an analog knob for user operation, and the analog knob corresponds to the physical knob 104. When the analog knob is operated to rotate in a first direction and each time the rotation angle reaches a first threshold angle, the controller 103 increases the current throttle gear by m gears. When the angle detection device detects that the physical knob 104 rotates in a second direction and each time the rotation angle reaches a second threshold angle, the controller 103 reduces the current throttle gear by n gears. The electronic monitor is provided with an operation screen, and the operation screen has an analog knob for user operation, and the user operation mode is more diverse.

[0036] In some embodiments, the electronic monitor 105 is further configured to operate to set a maximum gear number j and / or a target gear number k.

[0037] In some embodiments, the electronic monitor 105 is also provided with a gear display interface for displaying the various throttle gears of the engine 101. The gear display interface is used to display the throttle gear currently selected by the user. The operation screen can display the throttle gear currently selected by the user when rotating the physical knob or the analog knob in real time, making it clearer to the user.

[0038] In some embodiments, the electronic monitor 105 is also used to operate to set the highest gear number j. The intelligent control method for the throttle of an engineering machinery also includes: using the controller 103 to calculate the economic gear number under the current highest gear number j according to the highest gear number j set by the user and display it. The economic gear refers to a gear with good economy, that is, a fuel-saving gear. For an engine, the engine speed has good economy within a certain range. When the highest gear number j is different, the engine speed with good economy is different for the gear number, that is, the economic gear number is different. This embodiment can facilitate users to know the information of the economic gear number in time and facilitate users to make accurate choices by displaying the economic gear number.

[0039] In some embodiments, the electronic monitor 105 is also used by the user to set a memory state and a non-memory state; in the memory state, the current throttle position of the engine 101 is stored, and when the control device is restarted after power failure or the engine 101 is restarted after shutdown, the controller 103 sends a memory state instruction to the engine control module ECM102, and after receiving the memory state instruction, the engine control module ECM102 controls the throttle position of the engine 101 to be restored to the throttle position of the engine 101 before restarting; in the non-memory state, when the control device is restarted after power failure or the engine 101 is restarted after shutdown, the controller 103 does not send a memory state instruction to the engine control module ECM102.

[0040] In some embodiments, a construction machinery is also disclosed, which applies any construction machinery throttle intelligent control method, the construction machinery includes a physical control device and an engine 101, the control device includes a knob, an angle detection device, a controller 103 and an engine control module ECM102; the physical knob 104 is used to be operated by a user to rotate in a first direction or a second direction, one of the first direction and the second direction is clockwise, and the other is counterclockwise, the angle detection device is connected to the controller 103 by signal, the controller 103 is connected to the engine control module ECM102 by signal, the engine control module ECM 102 is connected to the engine 101 by signal, and the controller 103 is connected to the engine control module ECM 102 by signal.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for intelligently controlling a throttle of an engineering machinery, characterized in that: The engineering machinery comprises a physical control device and an engine, the control device comprises a physical knob, an angle detection device, a controller and an engine control module (ECM); the physical knob is used to be operated by a user to rotate in a first direction or in a second direction, one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction, the angle detection device is connected to the controller by signal, the controller is connected to the engine control module (ECM) by signal, the engine control module (ECM) is connected to the engine by signal, the controller is connected to the engine control module (ECM) by signal, and the engineering machinery throttle intelligent control method comprises: The angle detection device is used to detect the rotation direction and rotation angle of the physical knob and send the detection result to the controller; the controller is used to generate a control instruction according to the detection result of the angle detection device and send it to the engine control module ECM; wherein, when the angle detection device detects that the physical knob rotates in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears and controls the engine to execute the speed corresponding to the increased throttle gear through the engine control module ECM; when the angle detection device detects that the physical knob rotates in a second direction and each time the rotation angle reaches a second threshold angle, the controller reduces the current throttle gear by n gears and controls the engine to execute the speed corresponding to the reduced throttle gear through the engine control module ECM.

2. The engineering machinery throttle intelligent control method according to claim 1, characterized in that: When the angle detection device detects that the physical knob rotates in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears, including: when the angle detection device detects that the physical knob rotating in the first direction changes the rotation direction to the second direction or stops rotating after a first threshold time, when it is detected that the physical knob rotates in the first direction again, the rotation angle of the physical knob rotating in the first direction is recalculated from the time it rotates in the first direction again; when the angle detection device detects that the physical knob rotating in the second direction changes the rotation direction to the first direction or stops rotating after a second threshold time, when it is detected that the physical knob rotates in the second direction again, the rotation angle of the physical knob in the second direction is recalculated from the time it rotates in the second direction again.

3. The engineering machinery throttle intelligent control method according to claim 1, characterized in that: The method further includes using the controller to set a maximum gear number j corresponding to the maximum speed of the engine, and when the throttle gear reaches the highest gear, using the controller to limit the throttle gear from further increasing.

4. The engineering machinery throttle intelligent control method according to claim 1, characterized in that: It also includes using the controller to set the minimum speed and the maximum speed, the engine control module ECM sends the current speed information of the engine to the controller, when the current speed of the engine reaches the maximum speed, the speed of the engine is restricted from continuing to increase, when the current speed of the engine reaches the minimum speed, the speed of the engine is restricted from continuing to decrease.

5. The engineering machinery throttle intelligent control method according to claim 1, characterized in that: The physical knob is also used to be pressed downward and automatically reset when pressed. The engineering machinery throttle intelligent control method also includes: using the controller to set a target gear number k. When the physical knob is pressed downward, the controller switches the current throttle gear to the kth gear, and controls the engine to execute the throttle speed corresponding to the kth throttle gear through the engine control module ECM.

6. The engineering machinery throttle intelligent control method according to claim 1, characterized in that: The engineering machinery also includes an electronic monitor connected to the controller signal, and the electronic monitor is provided with an analog knob for user operation, and the analog knob corresponds to the physical knob. When the analog knob is operated to rotate in a first direction and each time the rotation angle reaches a first threshold angle, the controller increases the current throttle gear by m gears. When the angle detection device detects that the physical knob rotates in a second direction and each time the rotation angle reaches a second threshold angle, the controller reduces the current throttle gear by n gears.

7. The intelligent throttle control method for engineering machinery according to claim 6, characterized in that: The electronic monitor is also used to operate to set the maximum gear number j and / or the target gear number k.

8. The intelligent throttle control method for construction machinery according to claim 7, characterized in that: The electronic monitor is also provided with a gear display interface for displaying various throttle gears of the engine, and the gear display interface is used to display the throttle gear currently selected by the user.

9. The engineering machinery throttle intelligent control method according to claim 8, characterized in that: The electronic monitor is also used to operate to set the maximum gear number j. The engineering machinery throttle intelligent control method also includes: using the controller to calculate and display the economic gear number under the current maximum gear number j according to the maximum gear number j set by the user.

10. The intelligent throttle control method for construction machinery according to claim 6, characterized in that: The electronic monitor is also used for the user to set a memory state and a non-memory state; in the memory state, the current throttle position of the engine is stored, and when the control device is restarted after power failure or the engine is restarted after shutdown, the controller sends a memory state instruction to the engine control module ECM, and after receiving the memory state instruction, the engine control module ECM controls the throttle position of the engine to be restored to the engine throttle position before restarting; in the non-memory state, when the control device is restarted after power failure or the engine is restarted after shutdown, the controller does not send a memory state instruction to the engine control module ECM.

11. An engineering machine, using the engineering machine throttle intelligent control method according to any one of claims 1 to 10, characterized in that: The engineering machinery includes a physical control device and an engine, the control device includes a knob, an angle detection device, a controller and an engine control module (ECM); the physical knob is used to be operated by a user to rotate in a first direction or a second direction, one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction, the angle detection device is connected to the controller signal, the controller is connected to the engine control module (ECM) signal, the engine control module (ECM) is connected to the engine signal, and the controller is connected to the engine control module (ECM) signal.

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