A method and system for protecting control of sudden acceleration of an internal combustion fork truck

Abstract

The application discloses a kind of internal combustion fork truck sudden acceleration protection control method and system, it is related to internal combustion fork truck sudden acceleration protection control field, by judging the current speed of internal combustion fork truck whether zero, if the current speed of internal combustion fork truck is zero, when receiving the pedal signal transmitted by accelerator pedal, it is judged whether current satisfies preset condition, if current satisfies preset condition, then the electromagnetic valve for controlling the movement state of vehicle in internal combustion fork truck is prohibited to power on, and it is monitored whether receiving pedal signal again, if receiving pedal signal again, then control electromagnetic valve to power on, so that user needs to re-pedal accelerator pedal to make vehicle normal work if not satisfying preset condition when pedaling accelerator pedal, reduce the risk caused by vehicle misstep, guarantee the safety of vehicle and driver.

Description

Technical Field

[0001] This invention relates to the field of rapid acceleration protection control for internal combustion forklifts, and particularly to a method and system for rapid acceleration protection control of internal combustion forklifts. Background Technology

[0002] If an internal combustion forklift driver suddenly misoperates the accelerator and the gear is not in neutral, the vehicle will accelerate rapidly from zero, causing incalculable damage to people or goods. If heavy objects are being moved at height, the sudden acceleration may cause the goods to fall from the air or the vehicle to overturn.

[0003] Traditional methods to prevent accidental throttle operation involve adding a physical travel interval to the accelerator pedal design. Within this interval, pressing the pedal will not trigger an engine response, and the pedal will remain at idle. However, this method has the disadvantage of a short physical travel interval, meaning that even with protection in place, this travel interval can be largely ignored in special circumstances. Furthermore, this method is relatively simple and does not involve intervention from the vehicle's control system, thus failing to provide real-time control. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method and system for protecting the rapid acceleration of an internal combustion forklift, so that if the user does not meet the preset conditions when pressing the accelerator pedal, the user needs to press the accelerator pedal again to enable the vehicle to work normally, thereby reducing the danger caused by accidental pressing of the accelerator pedal and ensuring the safety of the vehicle and the driver.

[0005] To solve the above-mentioned technical problems, the present invention provides a method for rapid acceleration protection control of an internal combustion forklift, comprising:

[0006] Determine if the current speed of the internal combustion forklift is zero;

[0007] If the current speed of the internal combustion forklift is zero, then when a pedal input signal is received from the accelerator pedal, it is determined whether the preset conditions are met.

[0008] If the preset conditions are met, the solenoid valve in the internal combustion forklift used to control the vehicle's movement is prevented from being powered on, and the system monitors whether the pedal signal is received again.

[0009] If the pedaling signal is received again, the solenoid valve is energized.

[0010] Optionally, determining whether the preset conditions are met includes:

[0011] The accelerator pedal opening degree within a specified time is determined by the currently received pedal signal;

[0012] Determine whether the throttle opening is less than the preset opening;

[0013] If the throttle opening is not less than the preset opening, then the preset condition is determined to be met.

[0014] If the throttle opening is less than the preset opening, it is determined that the preset condition is not met.

[0015] Optionally, determining whether the preset conditions are met includes:

[0016] Determine the weight of the goods carried by the internal combustion forklift and / or the height of the forks of the internal combustion forklift;

[0017] Determine whether the preset conditions are met based on the weight and / or height.

[0018] Optionally, determining whether the preset conditions are met based on the weight and / or the height includes:

[0019] Determine whether the weight is zero and / or whether the height is less than a preset height;

[0020] If the weight is zero and / or the height is less than the preset height, then the preset conditions are determined to be met.

[0021] Optionally, determining whether the preset conditions are met based on the weight and / or the height includes:

[0022] Determine whether the weight is less than a preset weight and whether the height is greater than the preset height;

[0023] If the weight is less than the preset weight and the height is greater than the preset height, then the preset condition is determined to be met.

[0024] Furthermore, controlling the solenoid valve to be energized includes:

[0025] By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a first preset speed range.

[0026] Optionally, determining whether the preset conditions are met based on the weight and / or the height includes:

[0027] Determine whether the weight is greater than the preset weight and whether the height is greater than the preset height;

[0028] If the weight is greater than the preset weight and the height is greater than the preset height, then the preset conditions are determined to be met.

[0029] Furthermore, controlling the solenoid valve to be energized includes:

[0030] By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a second preset speed range. The lower limit of both the second preset speed range and the first preset speed range is zero, and the upper limit of the second preset speed range is less than the upper limit of the first preset speed range.

[0031] Optionally, maintaining the speed limit of the internal combustion forklift within a second preset speed range includes:

[0032] By controlling the engine speed of the internal combustion forklift, the speed limit of the internal combustion forklift is maintained within the second preset speed range.

[0033] To address the aforementioned technical problems, the present invention also provides a rapid acceleration protection control system for internal combustion forklifts, comprising:

[0034] The first judgment unit is used to determine whether the current speed of the internal combustion forklift is zero;

[0035] The second judgment unit is used to determine whether the current condition is met when the current speed of the internal combustion forklift is zero and a pedal signal transmitted from the accelerator pedal is received.

[0036] The monitoring unit is used to prevent the solenoid valve in the internal combustion forklift used to control the movement state of the vehicle from being powered on when the preset conditions are met, and to monitor whether the pedal signal is received again.

[0037] The control unit is used to energize the solenoid valve when the pedal signal is received again.

[0038] The purpose of this invention is to provide a method and system for protecting the rapid acceleration of an internal combustion forklift. By determining whether the current speed of the forklift is zero, if the current speed is zero, upon receiving a pedal input signal from the accelerator pedal, the system determines whether a preset condition is met. If the preset condition is met, the system prevents the solenoid valve used to control the vehicle's movement from being energized, and monitors whether another pedal input signal is received. If another pedal input signal is received, the system controls the solenoid valve to be energized. This ensures that if the preset condition is not met when the user presses the accelerator pedal, the user must press the accelerator pedal again to allow the vehicle to operate normally, reducing the danger caused by accidental pedal input and ensuring the safety of the vehicle and the driver. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 A process flow diagram of a rapid acceleration protection control method for an internal combustion forklift provided by the present invention;

[0041] Figure 2 A schematic diagram of the control system of an internal combustion forklift provided by the present invention;

[0042] Figure 3 A schematic diagram of the control system of another internal combustion forklift provided by the present invention;

[0043] Figure 4 A schematic diagram of the structure of a rapid acceleration protection control system for an internal combustion forklift provided by the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of an electronic device provided by the present invention. Detailed Implementation

[0045] The core of this invention is to provide a method and system for protecting the rapid acceleration of an internal combustion forklift. If the preset conditions are not met when the user presses the accelerator pedal, the user needs to press the accelerator pedal again to enable the vehicle to work normally, thereby reducing the danger caused by accidental acceleration and ensuring the safety of the vehicle and the driver.

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please refer to Figure 1 , Figure 1 A process flowchart of a rapid acceleration protection control method for an internal combustion forklift provided by the present invention includes:

[0048] S11: Determine if the current speed of the internal combustion forklift is zero;

[0049] In this invention, because it is necessary to control the accidental stepping process when the direction switch of the internal combustion forklift is in neutral, it is necessary to first determine whether the current speed of the internal combustion forklift is zero. If the current speed of the internal combustion forklift is zero, subsequent control can continue, thus ensuring the reliability of the solution.

[0050] S12: If the current speed of the internal combustion forklift is zero, when the pedal signal is received, determine whether the preset conditions are met.

[0051] In this invention, when the current speed of the internal combustion forklift is zero, if a pedal signal is received from the accelerator pedal, i.e. when the driver presses the accelerator pedal, it is necessary to determine whether the current condition is met, i.e. whether the pedal press is a mistake, thus ensuring the safety of the internal combustion forklift and the driver.

[0052] S13: If the preset conditions are met, the solenoid valve in the internal combustion forklift used to control the vehicle's movement is prohibited from being energized, and the system monitors whether a stepping signal is received again.

[0053] S14: If a pedaling signal is received again, the solenoid valve will be powered on.

[0054] In this invention, if the preset condition is met, i.e., the pedal press is accidental, the solenoid valve used to control the vehicle's movement in the internal combustion forklift needs to be de-energized, thus keeping the vehicle in a non-operating state. This operation helps the driver know that the pedal press was accidental. To ensure the normal operation of the internal combustion forklift afterward, it is necessary to continue monitoring whether a pedal press signal is received again, i.e., whether the accelerator pedal is pressed again. If a pedal press signal is received again, i.e., the accelerator pedal is pressed again, the solenoid valve needs to be energized, thereby enabling the internal combustion forklift to operate normally. By intervening in the operation of the internal combustion forklift through vehicle-side control, the accuracy and reliability of the control are improved.

[0055] It should be noted that, with the accelerator pedal protected, the vehicle controller can sense when the mast is raised and there is cargo, and when the driver suddenly presses the accelerator or moves the steering switch from neutral to drive, the acceleration of the forklift will be limited.

[0056] This embodiment provides a method for rapid acceleration protection control of an internal combustion forklift. By determining whether the current speed of the internal combustion forklift is zero, if the current speed is zero, upon receiving a pressing signal from the accelerator pedal, it is determined whether a preset condition is met. If the preset condition is met, the solenoid valve used to control the vehicle's movement is prevented from being energized, and the system monitors whether a pressing signal is received again. If a pressing signal is received again, the solenoid valve is energized. This ensures that if the preset condition is not met when the user presses the accelerator pedal, the user must press the accelerator pedal again for the vehicle to operate normally, reducing the danger caused by accidental pressing and ensuring the safety of the vehicle and the driver.

[0057] Based on the above embodiments:

[0058] As an optional embodiment, determining whether a preset condition is currently met includes:

[0059] The accelerator pedal opening degree within a specified time is determined by the currently received pedal signal;

[0060] Determine if the throttle opening is less than the preset opening;

[0061] If the throttle opening is not less than the preset opening, then the current preset condition is determined to be met;

[0062] If the throttle opening is less than the preset opening, it is determined that the current preset condition is not met.

[0063] In this invention, the method for determining whether the current condition is met is to determine the throttle opening of the accelerator pedal within a specified time by the currently received pedal signal, and then to determine whether the current condition is met by judging whether the currently received throttle opening is less than the preset opening. If the throttle opening is not less than the preset opening, it is determined that the current condition is met; if the throttle opening is less than the preset opening, it is determined that the current condition is not met, thus making a more accurate judgment on whether the current condition is met.

[0064] It should be noted that in practical applications, the preset opening is generally 30%, and the specified time is generally within 1 second. If the first press is accidental (the throttle opening is ≥30% within the predefined 1 second), the mast hydraulic action will not be affected. If the steering switch is moved from neutral to drive at this time, the controller will not output any signal to the solenoid valve, and the neutral position indicator will flash. Only when the accelerator pedal is pressed down again from the initial position can the vehicle operate normally.

[0065] As an optional embodiment, determining whether a preset condition is currently met includes:

[0066] Determine the weight of the goods carried by the internal combustion forklift and / or the height of the forks of the internal combustion forklift;

[0067] Determine whether the preset conditions are met based on weight and / or height.

[0068] In this invention, the method for determining whether the preset conditions are met is to first determine the weight of the goods carried by the internal combustion forklift and / or the height of the forks of the internal combustion forklift, and then make a judgment on whether the preset conditions are met based on the weight and / or height. This more accurately determines whether to prohibit the solenoid valve from being powered on based on the actual load and fork height, which is convenient for actual use and improves the safety of the solution.

[0069] It should be noted that in practical applications, the control system of an internal combustion forklift generally includes: instruments, speed sensors, controllers, height switches, pressure sensors, engine ECU (Electronic Control Unit), direction switches, and solenoid valves. The structure of the control system is as follows: Figure 2 and 3 As shown, the instrument panel is connected to the vehicle speed sensor. Vehicle speed-related parameters are set on the instrument panel, and the speed data is then sent to the controller via the CAN (Controller Area Network) bus. The controller is connected to the input / output devices and to the instrument panel and engine ECU via the CAN bus. The controller is also connected to the engine ECU; when vehicle speed needs to be controlled, it controls the ECU's TSC1 signal via the CAN bus. The accelerator pedal is connected to the engine ECU, allowing the ECU to read the accelerator pedal opening information. A height switch is installed at a certain height on the forklift's outer mast to monitor the height of the forks. A pressure sensor is installed on the pipeline to measure pressure, thereby determining the weight of the goods.

[0070] It should also be noted that when the forklift is at 0 speed, unloaded, and the forks are at any height, or when lightly loaded and the forks are within a certain height, accidental pressing of the accelerator pedal can prevent potential lateral safety hazards by limiting the re-engagement of the solenoid valve and accelerator pedal. When the forklift is at 0 speed, lightly loaded, or heavily loaded, and the forks are outside a certain height, limiting the re-engagement of the solenoid valve and accelerator pedal can limit the speed under different conditions, preventing potential lateral and longitudinal safety hazards. Applying different speed limits when the forklift is at 0 speed and under light or heavy load conditions can improve driver efficiency while also enhancing safety to a certain extent.

[0071] As an optional embodiment, determining whether a preset condition is met based on weight and / or height includes:

[0072] Determine if the weight is zero and / or if the height is less than the preset height;

[0073] If the weight is zero and / or the height is less than the preset height, then the preset conditions are determined to be met.

[0074] In this invention, the satisfaction of a preset condition is determined by whether the weight is zero and / or the height is less than a preset height. Specifically, if the weight is zero, the preset condition is satisfied; if the height is less than the preset height, the preset condition is also satisfied; if both the weight and height are zero, the preset condition is satisfied. In other words, when the forklift speed is 0, no goods are being transported, and the forks are at any height; or when the forklift speed is 0, the goods being transported, regardless of weight, and the forks are at a low height (preset height), the preset condition is satisfied, ensuring the accuracy of the judgment process.

[0075] As an optional embodiment, determining whether a preset condition is met based on weight and / or height includes:

[0076] Determine if the weight is less than the preset weight and if the height is greater than the preset height;

[0077] If the weight is less than the preset weight and the height is greater than the preset height, then the preset conditions are met.

[0078] Furthermore, energizing the solenoid valve includes:

[0079] By controlling the solenoid valve to energize it, the speed limit of the internal combustion forklift is maintained within a first preset speed range.

[0080] In this invention, the satisfaction of preset conditions is determined by whether the weight is less than a preset weight and the height is greater than a preset height. If the weight is less than the preset weight and the height is greater than the preset height, the preset conditions are considered met. That is, when the forklift speed is 0, the weight of the transported goods is less than the set value (preset weight), but the fork height is greater than the set height value (preset height), the preset conditions are considered met. Furthermore, for the case where the weight is less than the preset weight and the height is greater than the preset height, after energizing the solenoid valve, the speed of the internal combustion forklift is limited to a first preset speed range, ensuring the safety of the internal combustion forklift and the driver.

[0081] It should be noted that in practical applications, this part of the control is generally as follows: when the accelerator pedal is accidentally pressed (the accelerator opening is ≥30% within 1 second as predefined), the mast hydraulic action is not allowed. If the steering switch is moved from neutral to drive at this time, the controller will not output any signal to the solenoid valve, and the neutral position indicator will flash. Only when the accelerator pedal is pressed back from the initial position can the vehicle run normally. At the same time, the controller sends a signal to the engine ECU's TSC1 to control the engine speed, so that the vehicle speed limit range is from unrestricted to 8 km / h. The specific value of the first preset speed range is not limited in this invention; the specific value of the first preset speed range is determined by actual needs.

[0082] As an optional embodiment, determining whether a preset condition is met based on weight and / or height includes:

[0083] Determine if the weight is greater than the preset weight and if the height is greater than the preset height;

[0084] If the weight is greater than the preset weight and the height is greater than the preset height, then the preset conditions are met.

[0085] Furthermore, energizing the solenoid valve includes:

[0086] By controlling the solenoid valve to power on, the speed of the internal combustion forklift is limited to a second preset speed range. The lower limit of both the second and first preset speed ranges is zero, and the upper limit of the second preset speed range is less than the upper limit of the first preset speed range.

[0087] In this invention, the satisfaction of preset conditions is determined by whether the weight and height exceed a preset weight and height. If both the weight and height exceed the preset weight and height, the preset conditions are satisfied. Specifically, when the forklift speed is 0, the weight of the transported goods exceeds the set value (preset weight), but the fork height exceeds the set height value (preset height), the preset conditions are satisfied. Furthermore, for cases where both the weight and height exceed the preset weight and height, after energizing the solenoid valve, the speed of the internal combustion forklift is limited to a second preset speed range, ensuring the safety of the forklift and the driver.

[0088] It should be noted that in practical applications, this part of the control is generally as follows: when the accelerator pedal is accidentally pressed (the accelerator opening is ≥30% within 1 second as predefined), the mast hydraulic action is not allowed. If the direction switch is moved from neutral to drive at this time, the controller will not output any signal to the solenoid valve, and the neutral position indicator will flash. Only when the accelerator pedal is pressed back from the initial position can the vehicle run normally. At the same time, the controller sends a signal to the engine ECU's TSC1 to control the engine speed, so that the vehicle speed limit range is from unrestricted to 5 km / h. The specific value of the second preset speed range is not limited in this invention. The specific value of the second preset speed range is determined by actual needs.

[0089] As an optional embodiment, maintaining the speed limit of the internal combustion forklift within a second preset speed range includes:

[0090] By controlling the engine speed of the internal combustion forklift, the speed limit of the internal combustion forklift is maintained within a second preset speed range.

[0091] In this invention, the speed of the internal combustion forklift is limited to a second preset speed range by controlling the engine speed of the forklift, thus ensuring the integrity of the solution.

[0092] Please refer to Figure 4 , Figure 4 A schematic diagram of a rapid acceleration protection control system for an internal combustion forklift provided by the present invention includes:

[0093] The first judgment unit 11 is used to determine whether the current speed of the internal combustion forklift is zero;

[0094] The second judgment unit 12 is used to determine whether the current conditions are met when the current speed of the internal combustion forklift is zero and a pedal signal transmitted from the accelerator pedal is received.

[0095] The monitoring unit 13 is used to prevent the solenoid valve in the internal combustion forklift that controls the movement of the vehicle from being powered on when the preset conditions are met, and to monitor whether a stepping signal is received again.

[0096] The control unit 14 is used to energize the solenoid valve when a pedaling signal is received again.

[0097] The internal combustion forklift rapid acceleration protection control system provided in this embodiment corresponds to the above method, and therefore has the same beneficial effects as the above method. Therefore, for the embodiment of the internal combustion forklift rapid acceleration protection control device, please refer to the description of the embodiment in the method section, which will not be repeated here.

[0098] Please refer to Figure 5 , Figure 5 A schematic diagram of the structure of an electronic device provided by the present invention includes:

[0099] Memory 20 is used to store computer programs;

[0100] The processor 21 is used to implement the steps of the above-described internal combustion forklift rapid acceleration protection control method when executing a computer program.

[0101] The electronic devices provided in this embodiment may include, but are not limited to, smartphones, tablets, laptops, or desktop computers.

[0102] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0103] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, can implement the relevant steps of the internal combustion forklift rapid acceleration protection control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the internal combustion forklift rapid acceleration protection control method.

[0104] In some embodiments, the electronic device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0105] Those skilled in the art will understand that Figure 5 The structures shown do not constitute a limitation on electronic devices and may include more or fewer components than those shown.

[0106] The purpose of this embodiment is to provide an electronic device in which the memory 20 is used to store computer programs and the processor 21 is used to execute the computer programs to implement the steps of the above-described internal combustion forklift rapid acceleration protection control method, so as to make the control process more efficient and accurate.

[0107] The present invention also provides an embodiment corresponding to a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the above-described internal combustion forklift rapid acceleration protection control method.

[0108] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, 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 storage medium and executes all or part of the steps of the methods in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0109] The computer-readable storage medium provided in this embodiment corresponds to the method described above, and therefore has the same beneficial effects as the method described above. Therefore, for the embodiments of the computer-readable storage medium, please refer to the description of the embodiments in the method section, which will not be repeated here.

[0110] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0111] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for rapid acceleration protection control of an internal combustion forklift, characterized in that, include: Determine if the current speed of the internal combustion forklift is zero; If the current speed of the internal combustion forklift is zero, then when a pedal input signal is received from the accelerator pedal, it is determined whether the preset conditions are met. If the preset conditions are met, the solenoid valve in the internal combustion forklift used to control the vehicle's movement is prevented from being powered on, and the system monitors whether the pedal signal is received again. If the pedaling signal is received again, the solenoid valve is powered on. The determination of whether the preset conditions are met includes: The accelerator pedal opening degree within a specified time is determined by the currently received pedal signal; Determine whether the throttle opening is less than the preset opening; If the throttle opening is not less than the preset opening, then the preset condition is determined to be met. If the throttle opening is less than the preset opening, it is determined that the preset condition is not met. The determination of whether the preset conditions are met includes: Determine the weight of the goods carried by the internal combustion forklift and / or the height of the forks of the internal combustion forklift; Determine whether the preset conditions are met based on the weight and / or the height. The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is zero and / or whether the height is less than a preset height; If the weight is zero and / or the height is less than the preset height, then the preset condition is determined to be met. The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is less than a preset weight and whether the height is greater than the preset height; If the weight is less than the preset weight and the height is greater than the preset height, then the preset condition is determined to be met. Furthermore, controlling the solenoid valve to be energized includes: By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a first preset speed range; The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is greater than the preset weight and whether the height is greater than the preset height; If the weight is greater than the preset weight and the height is greater than the preset height, then the preset conditions are determined to be met. Furthermore, controlling the solenoid valve to be energized includes: By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a second preset speed range. The lower limit of both the second preset speed range and the first preset speed range is zero, and the upper limit of the second preset speed range is less than the upper limit of the first preset speed range.

2. The rapid acceleration protection control method for internal combustion forklifts according to claim 1, characterized in that, Maintaining the speed limit of the internal combustion forklift within a second preset speed range includes: By controlling the engine speed of the internal combustion forklift, the speed limit of the internal combustion forklift is maintained within the second preset speed range.

3. A rapid acceleration protection control system for an internal combustion forklift, characterized in that, include: The first judgment unit is used to determine whether the current speed of the internal combustion forklift is zero; The second judgment unit is used to determine whether the current condition is met when the current speed of the internal combustion forklift is zero and a pedal signal transmitted from the accelerator pedal is received. The monitoring unit is used to prevent the solenoid valve in the internal combustion forklift used to control the movement state of the vehicle from being powered on when the preset conditions are met, and to monitor whether the pedal signal is received again. The control unit is used to control the solenoid valve to power on when the pedal signal is received again; The determination of whether the preset conditions are met includes: The accelerator pedal opening degree within a specified time is determined by the currently received pedal signal; Determine whether the throttle opening is less than the preset opening; If the throttle opening is not less than the preset opening, then the preset condition is determined to be met. If the throttle opening is less than the preset opening, it is determined that the preset condition is not met. The determination of whether the preset conditions are met includes: Determine the weight of the goods carried by the internal combustion forklift and / or the height of the forks of the internal combustion forklift; Determine whether the preset conditions are met based on the weight and / or the height. The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is zero and / or whether the height is less than a preset height; If the weight is zero and / or the height is less than the preset height, then the preset condition is determined to be met. The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is less than a preset weight and whether the height is greater than the preset height; If the weight is less than the preset weight and the height is greater than the preset height, then the preset condition is determined to be met. Furthermore, controlling the solenoid valve to be energized includes: By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a first preset speed range; The step of determining whether the preset conditions are met based on the weight and / or the height includes: Determine whether the weight is greater than the preset weight and whether the height is greater than the preset height; If the weight is greater than the preset weight and the height is greater than the preset height, then the preset conditions are determined to be met. Furthermore, controlling the solenoid valve to be energized includes: By controlling the solenoid valve to be energized, the speed of the internal combustion forklift is limited to a second preset speed range. The lower limit of both the second preset speed range and the first preset speed range is zero, and the upper limit of the second preset speed range is less than the upper limit of the first preset speed range.

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