Fuel tank switching control method and control system of working machine and working machine

Abstract

The invention provides a fuel tank switching control method and system of an operation machine and the operation machine, and belongs to the technical field of operation machines. The method includes transmitting a start signal to an engine of the work machine when the start signal is received; under the condition that a temperature detection result, collected by a temperature sensor, of fuel oil in a main oil tank of the operation machine is larger than or equal to a set temperature threshold value, a conversion device is controlled to be switched from an auxiliary oil tank to the main oil tank to supply oil to the engine; wherein the main oil tank is loaded with first fuel oil, the auxiliary oil tank is loaded with second fuel oil, and the condensation point of the second fuel oil is lower than that of the first fuel oil. The fuel tank switching control method is used for solving the problem of how to provide the fuel tank switching control method of the operation machine capable of achieving both the automation degree and the efficiency during operation in the severe cold area.

Description

Technical Field

[0001] This invention relates to the field of construction machinery technology, specifically to a fuel tank switching control method for construction machinery, a fuel tank switching control system for construction machinery, and construction machinery. Background Technology

[0002] Currently, when operating machinery (such as super-large excavators) works in winter or low-temperature areas, measures such as adding low-grade diesel fuel or external auxiliary heating are generally used to prevent the diesel fuel from solidifying. Among these, the dual-fuel-tank supply system requires manual switching between high and low grade diesel fuel, resulting in poor automation; the external auxiliary heating system requires external heating equipment to heat the fuel system, leading to poor engine starting efficiency. Therefore, there is an urgent need for a fuel tank switching control method for operating machinery in extremely cold regions that can balance automation and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a fuel tank switching control method, a control system, and the working machinery, in order to solve the problem of how to provide a fuel tank switching control method for working machinery that can achieve both automation and efficiency in cold regions.

[0004] To achieve the above objectives, embodiments of the present invention provide a fuel tank switching control method for a work machinery, comprising: Upon receiving a start signal, the start signal is sent to the engine of the working machinery; When the temperature of the fuel in the main fuel tank of the machine is greater than or equal to a set temperature threshold, the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. The main fuel tank contains a first fuel, and the auxiliary fuel tank contains a second fuel, the pour point of which is lower than that of the first fuel.

[0005] Optionally, the conversion device includes an electrically connected fuel tank switching valve and a circuit switching device, and after sending the start signal to the engine of the working machinery, it further includes: If the temperature of the fuel in the main fuel tank of the operating machinery detected by the temperature sensor is less than the set temperature threshold, a maintenance level is sent to the circuit switching component. The control circuit switching unit maintains an input first level to the first control terminal of the fuel tank switching valve and maintains an input second level to the second control terminal of the fuel tank switching valve based on the maintenance level, so as to maintain the auxiliary fuel tank supplying fuel to the engine.

[0006] Optionally, the switching device includes an electrically connected fuel tank switching valve and a circuit switching device, wherein the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine, including: Send the first switching level to the circuit switching element; The control circuit switching unit inputs a third level to the first control terminal of the fuel tank switching valve based on the first switching level, and inputs a fourth level to the second control terminal of the fuel tank switching valve, so as to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine.

[0007] Optionally, after the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine, it further includes: Upon receiving a shutdown signal, a delayed shutdown command is sent to the engine; The converter is controlled to switch the auxiliary fuel tank to supply fuel to the engine; The auxiliary fuel tank is controlled to supply fuel to the engine for a set fuel supply time; the set fuel supply time is less than the set delay time. The engine is controlled to stop in response to the delayed shutdown command after a set delay time has elapsed.

[0008] Optionally, the switching device includes an electrically connected fuel tank switching valve and a circuit switching device, wherein controlling the switching device to switch the auxiliary fuel tank to supply fuel to the engine includes: Send a second switching level to the circuit switching element; The control circuit switching element inputs a first level to the first control terminal of the fuel tank switching valve based on the second switching level, and inputs a second level to the second control terminal of the fuel tank switching valve, so as to switch the auxiliary fuel tank to supply fuel to the engine.

[0009] Optionally, the method further includes: When the emergency stop switch is triggered, the shutdown signal sent to the engine is cut off to control the engine to stop working.

[0010] On the other hand, embodiments of the present invention also provide a fuel tank switching control system for operating machinery, comprising: The main controller is configured to execute the above-mentioned fuel tank switching control method for the operating machinery; A temperature sensor, electrically connected to the main controller, is used to detect the temperature of the fuel in the main fuel tank of the operating machinery and obtain the temperature detection result. The switching device, electrically connected to the main controller, is used to switch the fuel supply status of the engine of the operating machinery; before the engine starts, the switching device controls the auxiliary fuel tank of the operating machinery to supply fuel to the engine; The main fuel tank contains a first fuel, and the auxiliary fuel tank contains a second fuel, the pour point of which is lower than that of the first fuel.

[0011] Optionally, the conversion device includes: A fuel tank switching valve is used to control the main fuel tank or the auxiliary fuel tank to supply fuel to the engine; A circuit switching component is electrically connected to the first and second control terminals of the fuel tank switching valve, and is used to switch the voltage input to the first and second control terminals based on the control level of the main controller to supply fuel to the engine from either the main fuel tank or the auxiliary fuel tank.

[0012] Optionally, the system further includes an emergency stop switch electrically connected between the main controller and the engine, used to cut off the shutdown signal sent by the main controller to the engine when triggered, so as to control the engine to stop working.

[0013] On the other hand, embodiments of the present invention also provide a working machine, wherein at least one processor of the working machine is configured to execute the above-described fuel tank switching control method of the working machine, or the working machine includes the above-described fuel tank switching control system of the working machine.

[0014] On the other hand, the present invention also provides a machine-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned fuel tank switching control method for the working machinery.

[0015] On the other hand, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the above-mentioned fuel tank switching control method for the working machinery.

[0016] Through the above technical solution, in this embodiment of the invention, upon receiving a start signal, the start signal is sent to the engine of the working machinery; when the temperature of the fuel in the main fuel tank of the working machinery, as detected by the temperature sensor, is greater than or equal to a set temperature threshold, the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. Thus, this embodiment of the invention can perform main and auxiliary fuel tank switching control based on the received start signal and the actual temperature of the main fuel tank, enabling the working machinery to balance automation and efficiency in extremely cold regions.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart illustrating the fuel tank switching control method for operating machinery provided by the present invention. Figure 2 This is one of the structural schematic diagrams of the fuel tank switching control system for the operating machinery provided by the present invention; Figure 3 This is the second schematic diagram of the structure of the fuel tank switching control system for the operating machinery provided by the present invention; Figure 4 This is the third schematic diagram of the fuel tank switching control system for the operating machinery provided by the present invention. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0020] Method Implementation Examples Please refer to Figure 1 This invention provides a fuel tank switching control method for operating machinery, comprising: Step 100: Upon receiving a start signal, send the start signal to the engine of the working machine.

[0021] The fuel tank switching control method for operating machinery in this embodiment of the invention is applied to a fuel tank switching control system. Please refer to... Figure 2 The fuel tank switching control system includes a main controller, a temperature sensor, and a switching device. The temperature sensor, electrically connected to the main controller, is used to detect the temperature of the fuel in the main fuel tank of the operating machinery and obtain the temperature detection result. The switching device, also electrically connected to the main controller, is used to switch the fuel supply status of the engine of the operating machinery; before the engine starts, the switching device controls the auxiliary fuel tank of the operating machinery to supply fuel to the engine. The main fuel tank contains a first type of fuel, and the auxiliary fuel tank contains a second type of fuel, the second type of fuel having a lower pour point than the first type of fuel. That is, the low-temperature fluidity of the second type of fuel in the auxiliary fuel tank is better than that of the first type of fuel in the main fuel tank. For example, in one embodiment, the main fuel tank contains high-grade diesel fuel, and the auxiliary fuel tank contains low-grade diesel fuel.

[0022] In frigid regions, when the machinery needs to be started, the operator triggers a start / stop switch electrically connected to the main controller. The main controller receives the start signal from the start / stop switch. Upon receiving the start signal, the main controller sends the signal to the engine of the machinery. The engine responds to the start signal and starts with low-grade diesel fuel supplied from the auxiliary fuel tank. Because the auxiliary fuel tank supplies fuel to the engine before starting, the engine's fuel lines are already filled with low-grade diesel fuel, thus avoiding the risk of high-grade diesel fuel solidifying and clogging the fuel lines due to low temperatures.

[0023] Step 200: When the temperature detection result of the main fuel tank of the working machinery collected by the temperature sensor is greater than or equal to the set temperature threshold, the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine.

[0024] Because low-grade diesel fuel is consistently used, fuel economy will be significantly reduced. When the temperature of the fuel in the main fuel tank of the operating machinery, detected by the temperature sensor, is greater than or equal to a set temperature threshold, it indicates that the fuel in the main fuel tank is in a flowing state and can be supplied to the engine. The main controller then switches the fuel supply from the auxiliary fuel tank to the main fuel tank. Therefore, in this embodiment of the invention, when the temperature of high-grade diesel fuel reaches the set temperature threshold, the supply switches from low-grade diesel fuel to high-grade diesel fuel, thus ensuring both power stability and fuel economy.

[0025] In this embodiment of the invention, upon receiving a start signal, the start signal is sent to the engine of the working machinery. If the temperature of the fuel in the main fuel tank of the working machinery, as detected by the temperature sensor, is greater than or equal to a set temperature threshold, the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. Therefore, this embodiment of the invention can perform main and auxiliary fuel tank switching control based on the received start signal and the actual temperature of the main fuel tank, enabling the working machinery to balance automation and efficiency in extremely cold regions.

[0026] In other aspects of the embodiments of the present invention, the switching device includes an electrically connected fuel tank switching valve and a circuit switching device; before the engine is started, the circuit switching device inputs a first level to a first control terminal of the fuel tank switching valve and inputs a second level to a second control terminal of the fuel tank switching valve to control the auxiliary fuel tank of the working machinery to supply fuel to the engine. Controlling the switching device to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine includes: sending a first switching level to the circuit switching device; controlling the circuit switching device to input a third level to the first control terminal of the fuel tank switching valve based on the first switching level, and inputting a fourth level to the second control terminal of the fuel tank switching valve to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine; the third level has a different voltage than the first level, the second level has a different voltage than the fourth level, and the first level has a different voltage than the second level.

[0027] The circuit switching unit is used to switch the voltage input to the first and second control terminals of the fuel tank switching valve based on the control level of the main controller, thereby switching the fuel supply to the engine from the main fuel tank or the auxiliary fuel tank. The circuit switching unit can be any one of a relay, power semiconductor, power management integrated circuit, or automatic transfer switch. In one embodiment, the circuit switching unit is described using a relay in the electronic control box as an example. When the detected temperature of the fuel in the main fuel tank is greater than or equal to a set temperature threshold, the main controller sends a switching command (first switching level) to relays K1 and K2 inside the electronic control box. Current is output through the main controller's I / O port to the coils of relays K1 and K2 inside the electronic control box. Relays K1 and K2, through their contact switching circuits, change the power supply circuit of the fuel tank switching valve, switching the engine's fuel supply from the auxiliary fuel tank to the main fuel tank. The entire process is displayed on a screen electrically connected to the main controller.

[0028] For example, please refer to Figure 3Before the engine starts, the main controller sends a low-level signal to the coils of relays K1 and K2 in the control box. At this time, the coils of relays K1 and K2 are not magnetic, and the 87a contacts of relays K1 and K2 are closed. Relay K1 inputs a high-level signal (first level) to the E terminal (first control terminal) of the fuel tank switching valve, and relay K2 inputs a low-level signal (second level) to the D terminal (second control terminal) of the fuel tank switching valve to control the auxiliary fuel tank of the working machinery to supply fuel to the engine. If the temperature of the fuel in the main fuel tank is detected to be greater than or equal to the set temperature threshold, the main controller sends a first switching level (high level) to relays K1 and K2 in the control box. The main controller outputs a high-level signal to the coils of relays K1 and K2 inside the electrical control box via its I / O port. At this time, the coils of relays K1 and K2 become magnetic, and the 87 contacts of relays K1 and K2 are connected. Relay K1 inputs a low-level signal (third level) to the E terminal (first control terminal) of the fuel tank switching valve, and relay K2 inputs a high-level signal (fourth level) to the D terminal (second control terminal) of the fuel tank switching valve. This changes the power supply circuit of the fuel tank switching valve, switching the engine's fuel supply from the auxiliary fuel tank to the main fuel tank. The entire process is indicated by a status display screen electrically connected to the main controller.

[0029] In other aspects of the embodiments of the present invention, after step 100, sending the start signal to the engine of the working machinery, the method further includes: when the temperature detection result of the main fuel tank of the working machinery collected by the temperature sensor is less than a set temperature threshold, sending a maintenance level to the circuit switching component; controlling the circuit switching component to maintain the input of the first level to the first control terminal of the fuel tank switching valve and maintain the input of the second level to the second control terminal of the fuel tank switching valve based on the maintenance level, so as to maintain the auxiliary fuel tank supplying fuel to the engine.

[0030] If the temperature of the fuel in the main fuel tank of the operating machinery, as detected by the temperature sensor, is lower than the set temperature threshold, it indicates that the fuel in the main fuel tank is still in a solidified state and cannot be supplied to the engine. Therefore, it is necessary to maintain the auxiliary fuel tank to supply fuel to the engine. For example, please refer to... Figure 3The main controller maintains a low-level signal to the coils of relays K1 and K2 in the electronic control box. At this time, the coils of relays K1 and K2 are not magnetic, and contacts 87a of relays K1 and K2 are closed. Relay K1 maintains a high-level input (first level) to the E terminal (first control terminal) of the fuel tank switching valve, and relay K2 maintains a low-level input (second level) to the D terminal (second control terminal) of the fuel tank switching valve. The fuel tank switching valve does not switch the fuel supply state, and high-grade fuel is supplied to the engine from the auxiliary fuel tank. Therefore, this embodiment of the invention can control the switching between the main and auxiliary fuel tanks based on the received start signal and the actual temperature of the main fuel tank, enabling the operating machinery to maintain both automation and efficiency in cold regions.

[0031] In other aspects of the embodiments of the present invention, after step 200, which controls the switching device to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine, the method further includes: sending a delayed shutdown command to the engine upon receiving a shutdown signal; controlling the switching device to switch to the auxiliary fuel tank to supply fuel to the engine; controlling the auxiliary fuel tank to supply fuel to the engine for a set fuel supply time; and controlling the engine to shut down in response to the delayed shutdown command after the set delay time has been reached.

[0032] When the machinery needs to be stopped, the operator triggers the start / stop switch electrically connected to the main controller. The main controller receives the stop signal from the start / stop switch. The main controller executes the engine's delayed shutdown command, sending a delayed shutdown command to the engine. The delayed shutdown command is used to control the shutdown after a set delay time t1. To ensure smooth fuel supply for the machinery upon restarting, the auxiliary fuel tank needs to be switched to supply fuel to the engine. The main controller sends a switching command, outputting current through the controller's I / O port to the coils of relays K1 and K2 inside the electrical control box. Relays K1 and K2, through their contact switching circuits, change the power supply circuit of the fuel tank switching valve, switching the engine's fuel supply to the auxiliary fuel tank. Throughout this process, the display screen provides status updates. The main controller then controls the auxiliary fuel tank to supply fuel to the engine for the set fuel supply time. The set fuel supply time t2 is less than the set delay time t1. This ensures that the low-grade diesel fuel in the auxiliary fuel tank fills the engine's entire fuel supply circuit before the engine is shut down. Finally, the main controller controls the engine to respond to the delayed shutdown command and stop the engine after the set delay time t1. The fuel tank switching valve is stopped in the auxiliary fuel tank position to ensure that the auxiliary fuel tank is supplied before the next start, avoiding the risk of high-grade diesel fuel solidifying and clogging the fuel line due to low temperature.

[0033] In one embodiment, controlling the switching device to switch the auxiliary fuel tank to supply fuel to the engine includes: sending a second switching level to the circuit switching device; controlling the circuit switching device to input a first level to a first control terminal of the fuel tank switching valve based on the second switching level, and input a second level to a second control terminal of the fuel tank switching valve, so as to switch the auxiliary fuel tank to supply fuel to the engine.

[0034] For example, please refer to Figure 3 The main controller sends a low level (second switching level) to the coils of relays K1 and K2 in the electrical control box. At this time, the coils of relays K1 and K2 are not magnetic, and the 87a contacts of relays K1 and K2 are connected. Relay K1 inputs a high level (first level) to the E terminal (first control terminal) of the fuel tank switching valve, and relay K2 inputs a low level (second level) to the D terminal (second control terminal) of the fuel tank switching valve to control the auxiliary fuel tank of the working machinery to supply fuel to the engine.

[0035] Therefore, the dual fuel tank switching control strategy of this invention can automatically switch between high and low grade fuel tanks according to the starting and stopping conditions, thereby improving engine starting efficiency and achieving fuel economy, and avoiding the risk of high grade diesel fuel solidifying and clogging the fuel line due to low temperature.

[0036] In other aspects of the embodiments of the present invention, the method further includes: cutting off the shutdown signal sent to the engine when the emergency stop switch is triggered, so as to control the engine to stop working.

[0037] In one embodiment, please refer to Figure 3 In cases where the engine of the operating machinery needs to be shut down urgently due to an abnormal situation, the operator presses the emergency stop switch. When the emergency stop switch is triggered, the shutdown signal sent to the engine is cut off, and the engine stops working. At this time, the fuel tank switching valve and the circuit switching components cease to function. Therefore, this embodiment of the invention ensures that the engine of the operating machinery stops working in emergency situations, facilitating troubleshooting.

[0038] In other embodiments, the present invention controls the oil circuit switching by comparing temperature and time. It can also control the fuel tank switching valve by semi-automatic control, using ambient temperature as the control factor instead of fuel temperature, and by using different control algorithms, such as fuzzy control algorithm, adaptive control algorithm, predictive control algorithm, neural network control algorithm, and optimal control algorithm.

[0039] This invention provides a dual fuel tank switching control strategy to solve the problem of difficult equipment startup in extremely cold regions. It controls the switching between high and low grade fuel tanks based on the equipment's start-up and shutdown status and the actual temperature of the main fuel tank, thereby improving the efficiency and lifespan of the power system and enhancing economic benefits while ensuring high efficiency.

[0040] System Implementation Examples Please refer to Figure 4 On the other hand, embodiments of the present invention also provide a fuel tank switching control system for working machinery, including: a main controller 10, a temperature sensor 20, and a switching device 30.

[0041] The main controller 10 is configured to execute the above-described fuel tank switching control method for the operating machinery; the temperature sensor 20 is electrically connected to the main controller 10 and is used to detect the temperature of the fuel in the main fuel tank of the operating machinery and obtain the temperature detection result; the switching device 30 is electrically connected to the main controller 10 and is used to switch the fuel supply state of the engine of the operating machinery; before the engine starts, the switching device 30 controls the auxiliary fuel tank of the operating machinery to supply fuel to the engine; wherein, the main fuel tank is filled with a first fuel, the auxiliary fuel tank is filled with a second fuel, and the pour point of the second fuel is lower than that of the first fuel.

[0042] In frigid regions, when the machinery needs to be started, the operator triggers a start / stop switch electrically connected to the main controller 10. The main controller 10 receives the start signal from the start / stop switch. Upon receiving the start signal, the main controller 10 sends the start signal to the engine of the machinery. The engine responds to the start signal and starts with low-grade diesel fuel supplied from the auxiliary fuel tank. Since low-grade diesel fuel is always used, fuel economy is significantly reduced. When the temperature sensor 20 detects that the temperature of the fuel in the main fuel tank of the machinery is greater than or equal to a set temperature threshold, it indicates that the fuel in the main fuel tank is now in a flowing state and can be supplied to the engine. The main controller 10 then controls the switching device 30 to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. Thus, in this embodiment of the invention, when the temperature of high-grade diesel fuel reaches the set temperature threshold, the supply is switched from low-grade diesel fuel to high-grade diesel fuel, ensuring both power stability and fuel economy.

[0043] In this embodiment of the invention, upon receiving a start signal, the start signal is sent to the engine of the working machinery. If the temperature sensor 20 detects that the temperature of the fuel in the main fuel tank of the working machinery is greater than or equal to a set temperature threshold, the control switching device 30 switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. Therefore, this embodiment of the invention can perform main and auxiliary fuel tank switching control based on the received start signal and the actual temperature of the main fuel tank, enabling the working machinery to balance automation and efficiency in extremely cold regions.

[0044] In one embodiment, the switching device 30 includes a fuel tank switching valve 31 and a circuit switching device 32. The fuel tank switching valve 31 controls the main fuel tank or the auxiliary fuel tank to supply fuel to the engine; the circuit switching device 32 is electrically connected to a first control terminal and a second control terminal of the fuel tank switching valve 31, and is used to switch the voltage input to the first control terminal and the second control terminal based on the control level of the main controller 10 to switch the main fuel tank or the auxiliary fuel tank to supply fuel to the engine.

[0045] For example, please refer to Figure 3 and Figure 4 Before the engine starts, the main controller 10 sends a low-level signal to the coils of relays K1 and K2 in the electronic control box. At this time, the coils of relays K1 and K2 are not magnetic, and the 87a contacts of relays K1 and K2 are closed. Relay K1 inputs a high-level signal (first level) to the E terminal (first control terminal) of the fuel tank switching valve 31, and relay K2 inputs a low-level signal (second level) to the D terminal (second control terminal) of the fuel tank switching valve 31 to control the auxiliary fuel tank of the working machinery to supply fuel to the engine. If the temperature detection result of the fuel in the main fuel tank is greater than or equal to the set temperature threshold, the main controller 10 sends a first switching level (high level) to the relay. The main controller 10 outputs a high-level signal to the coils of relays K1 and K2 inside the electrical control box via its IO port. At this time, the coils of relays K1 and K2 are magnetic, and the 87 contacts of relays K1 and K2 are connected. Relay K1 inputs a low-level signal (third level) to the E terminal (first control terminal) of the fuel tank switching valve 31, and relay K2 inputs a high-level signal (fourth level) to the D terminal (second control terminal) of the fuel tank switching valve 31. This changes the power supply circuit of the fuel tank switching valve 31, switching the engine's fuel supply from the auxiliary fuel tank to the main fuel tank. The entire process is indicated by a status display screen electrically connected to the main controller 10.

[0046] When the operating machinery needs to be stopped, the operator triggers the start / stop switch electrically connected to the main controller 10, and the main controller 10 receives the stop signal from the start / stop switch. The main controller 10 executes the engine's delayed shutdown command and sends the delayed shutdown command to the engine. The delayed shutdown command is used to control the shutdown after a set delay time t1. Since it is necessary to ensure smooth fuel supply to the operating machinery upon the next start-up, it is necessary to switch to the auxiliary fuel tank to supply fuel to the engine. The main controller 10 sends a low level (second switching level) to the coils of relays K1 and K2 in the electrical control box. At this time, the coils of relays K1 and K2 are not magnetic, and the 87a contacts of relays K1 and K2 are closed. Relay K1 inputs a high level (first level) to the E terminal (first control terminal) of the fuel tank switching valve 31, and relay K2 inputs a low level (second level) to the D terminal (second control terminal) of the fuel tank switching valve 31 to control the auxiliary fuel tank of the operating machinery to supply fuel to the engine.

[0047] The core of this invention lies in achieving main and auxiliary fuel tank switching through comparison of preset temperatures and electrical circuit control of the fuel tank switching valve 31. The dual fuel tank switching control strategy of this embodiment can automatically switch between high and low octane fuel tanks based on start-up and shutdown conditions, improving engine starting efficiency while achieving fuel economy, and avoiding the risk of high-octane diesel fuel solidifying and clogging the fuel lines due to low temperatures.

[0048] In other aspects of the embodiments of the present invention, the system further includes an emergency stop switch electrically connected between the main controller 10 and the engine, for cutting off the shutdown signal sent by the main controller 10 to the engine when triggered, so as to control the engine to stop working.

[0049] If the engine of the operating machinery needs to be stopped urgently due to an abnormal situation, the operator presses the emergency stop switch. When the emergency stop switch is triggered, the shutdown signal sent to the engine is cut off, and the engine stops working. At this time, the fuel tank switching valve 31 and the circuit switching component 32 cannot work. Thus, this embodiment of the invention can ensure that the engine of the operating machinery stops working in an emergency, which facilitates troubleshooting.

[0050] On the other hand, embodiments of the present invention also provide a working machine, wherein at least one processor of the working machine is configured to execute the above-described fuel tank switching control method of the working machine, or the working machine includes the above-described fuel tank switching control system of the working machine.

[0051] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program that can be stored on a machine-readable storage medium. When the computer program is executed by a processor, the computer is able to execute a fuel tank switching control method for a working machine. The method includes: upon receiving a start signal, sending the start signal to the engine of the working machine; and when a temperature sensor detects that the temperature of the fuel in the main fuel tank of the working machine is greater than or equal to a set temperature threshold, controlling a switching device to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine; wherein the main fuel tank is loaded with a first fuel, the auxiliary fuel tank is loaded with a second fuel, and the pour point of the second fuel is lower than that of the first fuel.

[0052] In another aspect, the present invention also provides a machine-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a fuel tank switching control method for a working machine. The method includes: upon receiving a start signal, sending the start signal to the engine of the working machine; and when a temperature sensor detects that the temperature of the fuel in the main fuel tank of the working machine is greater than or equal to a set temperature threshold, controlling a switching device to switch from an auxiliary fuel tank to the main fuel tank to supply fuel to the engine; wherein the main fuel tank contains a first fuel, the auxiliary fuel tank contains a second fuel, and the pour point of the second fuel is lower than that of the first fuel.

[0053] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for switching fuel tanks on a work machine, characterized in that, include: Upon receiving a start signal, the start signal is sent to the engine of the working machinery; When the temperature of the fuel in the main fuel tank of the machine is greater than or equal to a set temperature threshold, the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine. The main fuel tank contains a first fuel, and the auxiliary fuel tank contains a second fuel, the pour point of which is lower than that of the first fuel.

2. The fuel tank switching control method for operating machinery according to claim 1, characterized in that, The switching device includes an electrically connected fuel tank switching valve and a circuit switching device. After sending the start signal to the engine of the working machinery, it further includes: If the temperature of the fuel in the main fuel tank of the operating machinery detected by the temperature sensor is less than the set temperature threshold, a maintenance level is sent to the circuit switching component. The control circuit switching unit maintains an input first level to the first control terminal of the fuel tank switching valve and maintains an input second level to the second control terminal of the fuel tank switching valve based on the maintenance level, so as to maintain the auxiliary fuel tank supplying fuel to the engine.

3. The fuel tank switching control method for operating machinery according to claim 1, characterized in that, The switching device includes an electrically connected fuel tank switching valve and a circuit switching device. The control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine, including: Send the first switching level to the circuit switching element; The control circuit switching unit inputs a third level to the first control terminal of the fuel tank switching valve based on the first switching level, and inputs a fourth level to the second control terminal of the fuel tank switching valve, so as to switch from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine.

4. The fuel tank switching control method for operating machinery according to claim 1, characterized in that, After the control switching device switches from the auxiliary fuel tank to the main fuel tank to supply fuel to the engine, it also includes: Upon receiving a shutdown signal, a delayed shutdown command is sent to the engine; The converter is controlled to switch the auxiliary fuel tank to supply fuel to the engine; The auxiliary fuel tank is controlled to supply fuel to the engine for a set fuel supply time; the set fuel supply time is less than the set delay time. The engine is controlled to stop in response to the delayed shutdown command after a set delay time has elapsed.

5. The fuel tank switching control method for operating machinery according to claim 4, characterized in that, The switching device includes an electrically connected fuel tank switching valve and a circuit switching device. Controlling the switching device to switch the auxiliary fuel tank to supply fuel to the engine includes: Send a second switching level to the circuit switching element; The control circuit switching element inputs a first level to the first control terminal of the fuel tank switching valve based on the second switching level, and inputs a second level to the second control terminal of the fuel tank switching valve, so as to switch the auxiliary fuel tank to supply fuel to the engine.

6. The fuel tank switching control method for operating machinery according to claim 1, characterized in that, The method further includes: When the emergency stop switch is triggered, the shutdown signal sent to the engine is cut off to control the engine to stop working.

7. A fuel tank switching control system for a working machine, characterized in that, include: The main controller is configured to execute the fuel tank switching control method for the operating machinery as described in any one of claims 1 to 6; A temperature sensor, electrically connected to the main controller, is used to detect the temperature of the fuel in the main fuel tank of the operating machinery and obtain the temperature detection result. The switching device, electrically connected to the main controller, is used to switch the fuel supply status of the engine of the operating machinery; before the engine starts, the switching device controls the auxiliary fuel tank of the operating machinery to supply fuel to the engine; The main fuel tank contains a first fuel, and the auxiliary fuel tank contains a second fuel, the pour point of which is lower than that of the first fuel.

8. The fuel tank switching control system for the operating machinery according to claim 7, characterized in that, The conversion device includes: A fuel tank switching valve is used to control the main fuel tank or the auxiliary fuel tank to supply fuel to the engine; A circuit switching component is electrically connected to the first and second control terminals of the fuel tank switching valve, and is used to switch the voltage input to the first and second control terminals based on the control level of the main controller to supply fuel to the engine from either the main fuel tank or the auxiliary fuel tank.

9. The fuel tank switching control system for the operating machinery according to claim 8, characterized in that, The system also includes an emergency stop switch electrically connected between the main controller and the engine, used to cut off the shutdown signal sent by the main controller to the engine when triggered, so as to control the engine to stop working.

10. A type of operating machinery, characterized in that, At least one processor of the operating machine is configured to execute the fuel tank switching control method of the operating machine according to any one of claims 1 to 6, or the operating machine includes the fuel tank switching control system of the operating machine according to any one of claims 7 to 9.

Images