Method and device for starting a work machine in a low temperature environment, and work machine

Abstract

The application discloses a work machine starting method and device in a low-temperature environment and a work machine, and relates to the technical field of work machines. The method comprises the following steps: acquiring an environmental temperature corresponding to the work machine and an initial temperature of cooling liquid in the work machine; in the case that the environmental temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, controlling a heating device of the work machine to heat the cooling liquid of the work machine, and the first temperature threshold is less than the second temperature threshold; and in the case that a current temperature of the cooling liquid is greater than or equal to the second temperature threshold, dynamically adjusting the heating device based on the current temperature of the cooling liquid, and starting the work machine. The application can effectively improve the starting efficiency of the work machine in a low-temperature environment.

Description

Technical Field

[0001] This application relates to the field of construction machinery technology, specifically to a method for starting construction machinery in a low-temperature environment, a device for starting construction machinery in a low-temperature environment, a construction machinery, a computer-readable storage medium, and a terminal device. Background Technology

[0002] Construction machinery typically needs to operate reliably for extended periods in various environments. For example, mining excavators, as crucial mining equipment, must operate for long periods in the harsh conditions of mines. Mining environments are extremely harsh, especially at very low temperatures, such as -40 degrees Celsius, making starting mining excavators difficult. Often, auxiliary methods are needed to heat the engine to ensure reliable starting. Currently, common heating methods typically employ a single coolant heating system, such as resistance heating or fuel combustion heating, relying on manual control or simple temperature control switches; or adding anti-gelling agents to the fuel or operating with a single fuel grade, such as low-grade fuel; or using resistance wires to heat the fuel lines; or relying on the engine's natural warm-up after starting or external electric heating of the oil pan. However, the above methods have the following drawbacks: Low heating efficiency: The power of a single coolant heating system is insufficient, and the heating speed is slow in low-temperature environments, resulting in long start-up waiting times (usually exceeding 30 minutes); High energy consumption: Continuous full-power heating of coolant and fuel lines causes energy waste; Fuel switching risk: High-octane diesel is prone to freezing at low temperatures, which may clog the fuel supply system during switching; Pipeline freezing hazard: Traditional resistance wire heating is not combined with an insulation layer, resulting in serious heat loss, and diesel may still freeze locally during flow; Insufficient waste heat utilization: Waste heat from the exhaust pipe is not directed to key components such as the oil pan, and oil temperature rise relies on passive conduction. Summary of the Invention

[0003] The purpose of this application is to provide a method for starting work machinery in a low-temperature environment, a device for starting work machinery in a low-temperature environment, a work machinery, a computer-readable storage medium, and a terminal device, so as to solve the problem of difficulty in starting the engine of work machinery in low temperatures in the prior art.

[0004] To achieve the above objectives, the first aspect of this application provides a method for starting up machinery in a low-temperature environment, the method comprising: Obtain the ambient temperature corresponding to the operating machinery, and the initial temperature of the coolant in the operating machinery; When the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the heating device of the working machine is controlled to heat the coolant of the working machine, where the first temperature threshold is less than the second temperature threshold. If the current temperature of the coolant is greater than or equal to the second temperature threshold, the operation of the heating device is dynamically adjusted based on the current temperature of the coolant, and the working machinery is started.

[0005] Optionally, the heating device includes a first heating element and a second heating element, and the step of dynamically adjusting the operation of the heating device based on the current temperature of the coolant includes: If the duration for which the current temperature of the coolant is greater than or equal to the second temperature threshold reaches the first duration threshold, the first heating element and the second heating element are controlled to stop heating, and the operating machinery is started. After starting the operating machinery, the current temperature of the coolant is continuously acquired. If the current temperature of the coolant is lower than the second temperature threshold for a duration that reaches the second duration threshold, the operation of the heating device is dynamically adjusted through the following steps: When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the first temperature difference threshold, the first heating element and the second heating element are controlled to work based on the current temperature of the coolant, the heating efficiency of the first heating element and the heating efficiency of the second heating element. When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the first temperature difference threshold, and the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the second temperature difference threshold, the first heating element is controlled to stop heating the coolant of the working machine, and the second heating element is controlled to work based on the current temperature of the coolant and the heating efficiency of the second heating element. If the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the second temperature difference threshold, the first heating element and the second heating element shall be controlled to stop heating the coolant of the working machine. The first temperature difference threshold is greater than the second temperature difference threshold.

[0006] Optionally, controlling the operation of the first heating element and the second heating element based on the current temperature of the coolant, the heating efficiency of the first heating element, and the heating efficiency of the second heating element includes: Based on the temperature difference between the current temperature of the coolant and the second temperature threshold, the target heat required to heat the coolant to the second temperature threshold is determined; The actual output power of the first heating element and the second heating element is determined based on their rated power and heating efficiency. Based on the target heat and the actual output power of the first heating element and the second heating element, the shortest heating time of the first heating element and the second heating element is determined, and the first heating element and the second heating element are controlled to heat the coolant with the shortest heating time.

[0007] Optionally, controlling the operation of the second heating element based on the current temperature of the coolant and the heating efficiency of the second heating element includes: Based on the temperature difference between the current temperature of the coolant and the second temperature threshold, the target heat required to heat the coolant to the second temperature threshold is determined; The actual output power of the second heating element is determined based on its rated power and heating efficiency. The shortest heating time of the second heating element is determined based on the target heat and the actual output power of the second heating element, and the second heating element is controlled to heat the coolant for the shortest heating time.

[0008] Optionally, the coolant is used to heat the high-octane fuel in the main fuel tank of the operating machinery to start the operating machinery, including: The auxiliary fuel tank of the operating machinery is controlled to supply low-grade fuel to the engine of the operating machinery to start the engine; The temperature of the high-octane fuel in the main fuel tank is continuously monitored. When the high-octane fuel in the main fuel tank reaches the target temperature, the high-octane fuel in the main fuel tank is switched to supply fuel to the engine.

[0009] Optionally, if the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the method further includes: The third heating element installed in the engine oil inlet pipe of the working machinery and the fourth heating element installed in the engine oil return pipe of the working machinery are controlled to heat the oil inlet pipe and the oil return pipe. If the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the second temperature difference threshold, the method further includes: Control the third heating element and the fourth heating element to stop heating.

[0010] A second aspect of this application provides a starting device for machinery operating in low-temperature environments, the device comprising: The data acquisition module is configured to acquire the ambient temperature of the operating machinery and the initial temperature of the coolant in the operating machinery. The heating control module is configured to control the heating device of the working machinery to heat the coolant of the working machinery when the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold. The start control module is configured to dynamically adjust the heating device and start the working machinery based on the current temperature of the coolant when the current temperature of the coolant is greater than or equal to the second temperature threshold.

[0011] A third aspect of this application provides a work machine, comprising: Multiple temperature sensors are used to collect the ambient temperature of the operating machinery and the temperature of the coolant in the operating machinery; A heating device for heating the coolant; The controller is used to acquire the ambient temperature corresponding to the operating machinery and the initial temperature of the coolant. When the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the controller controls the heating device of the operating machinery to heat the coolant of the operating machinery. When the current temperature of the coolant is greater than or equal to the second temperature threshold, the controller dynamically adjusts the heating device based on the current temperature of the coolant and starts the operating machinery.

[0012] Optionally, the heating device includes: First heating element and second heating element; Both the first heating element and the second heating element are provided with exhaust pipes for discharging combustion flue gas, and the exhaust pipes of the first heating element and the second heating element are both directed toward the oil pan of the engine of the working machinery, so that the combustion flue gas discharged by the first heating element and the second heating element heats the oil pan of the engine. Both the first heating element and the second heating element are equipped with one-way valves to prevent backflow of airflow on their exhaust pipes.

[0013] In a fourth aspect, this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform the above-described method for starting up machinery in a low-temperature environment.

[0014] On the fifth page of this application, a terminal device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the above-described method for starting up machinery in a low-temperature environment.

[0015] The embodiments provided in this application have the following beneficial effects: This application, by real-time monitoring of ambient temperature and coolant temperature of the machinery, determines that the coolant of the machinery needs to be heated. It utilizes a heating device deployed on the machinery to heat the coolant. After the coolant temperature reaches the target temperature, the heating control of the heating device is dynamically adjusted according to the real-time temperature of the coolant. This effectively improves the heating efficiency of the coolant during the start-up process, reduces energy consumption during the cooling process, and thus effectively improves the start-up efficiency of the machinery in low-temperature environments while reducing energy consumption and costs.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 A schematic diagram of a heating system according to an embodiment of this application is shown. Figure 2 A schematic diagram of the coolant piping structure according to an embodiment of this application is shown. Figure 3 The schematic diagram illustrates the system structure of the operating machinery according to an embodiment of this application; Figure 4 This illustration schematically shows a flowchart of a method for starting up machinery in a low-temperature environment according to an embodiment of this application. Figure 5 This schematic diagram illustrates the heating control process of an embodiment of this application. Figure 6 This schematic diagram illustrates a starting device for operating machinery in a low-temperature environment according to an embodiment of this application. Figure 7 The schematic diagram illustrates a terminal device structure according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures 10 - Terminal device, 100 - Processor, 101 - Memory, 102 - Computer program. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0021] To address the aforementioned issues, in one embodiment of this application, a working machine is provided, comprising: multiple temperature sensors for collecting the ambient temperature and the temperature of the coolant in the working machine, wherein the ambient temperature sensors can be disposed outside the working machine, and the coolant temperature sensors can be disposed in the pipeline of the coolant circulation loop; a heating device for heating the coolant; and a controller for acquiring the ambient temperature and the initial temperature of the coolant, controlling the heating device of the working machine to heat the coolant when the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, and dynamically adjusting the heating device based on the current temperature of the coolant and starting the working machine when the current temperature of the coolant is greater than or equal to the second temperature threshold.

[0022] In this application, the main fuel tank and auxiliary fuel tank of the operating machinery are filled with fuels of different grades. The main fuel tank contains high-grade diesel fuel, and the auxiliary fuel tank contains low-grade diesel fuel. Understandably, low-grade diesel fuel has a lower freezing point than high-grade diesel fuel, making it suitable for lower temperature environments; however, low-grade diesel fuel is more expensive than high-grade diesel fuel. To improve the starting efficiency of the operating machinery in low-temperature environments and reduce equipment operating costs, in this application, the coolant circulation loop of the operating machinery consists of coolant pipes deployed on the engine casing and coolant pipes deployed on the main fuel tank casing. The coolant in the coolant circulation loop is heated by a heating device deployed on the operating machinery. Understandably, the heating device generates heat by burning low-grade diesel fuel in the auxiliary fuel tank, and transfers the heat generated by combustion to the coolant pipeline through the built-in heat exchanger, thereby heating the coolant in the coolant circulation loop. The heated coolant in the coolant circulation loop can then transfer heat to the engine and main fuel tank through the coolant pipeline deployed on the engine and main fuel tank, thereby heating the high-grade diesel fuel in the engine block and main fuel tank.

[0023] Specifically, such as Figure 1 As shown, in this application, the oil outlet of the main oil tank of the operating machinery is located in the oil supply port area of ​​the main oil tank. That is, the area where the oil outlet of the main oil tank is located is defined as the oil supply port area of ​​the main oil tank. In the coolant circulation loop, the coolant pipeline deployed in the main oil tank is tightly attached to the outer shell of the oil tank in the oil supply port area of ​​the main oil tank, so as to heat the oil supply port area of ​​the main oil tank through the heated coolant. Figure 2 As shown, the main fuel tank and the auxiliary fuel tank are separated by a tank partition. The main and auxiliary fuel tanks are connected to the engine's fuel inlet via a switching valve. Specifically, the switching valve can be a three-way valve, with its first end connected to the main fuel tank's outlet, its second end connected to the auxiliary fuel tank's outlet, and its third end connected to the diesel filter's inlet via an outlet pipe. The diesel filter's outlet is connected to the engine's fuel inlet. To improve heating efficiency, the coolant lines deployed on the outer casing of the main fuel tank's fuel inlet area can be designed with continuous bends to increase the contact area between the coolant lines and the main fuel tank's fuel inlet area. Similarly, the coolant lines deployed on the engine in the coolant circulation loop are tightly fitted to the engine block to heat the engine block with heated coolant. Furthermore, to improve heating efficiency, bends in the coolant lines can be used to increase the contact area between the coolant lines and the engine.

[0024] Since existing parking heaters typically have low power and cannot quickly heat the engine oil and engine casing, this application's heating device includes a first heating element and a second heating element to reduce start-up waiting time. Both the first and second heating elements are fuel heaters, such as existing diesel boiler heaters. The oil inlet ends of both the first and second heating elements are connected to the oil outlet end of the auxiliary fuel tank via oil inlet pipes, and both the first and second heating elements are positioned within the coolant circulation loop.

[0025] Understandably, both the first and second heating elements are equipped with exhaust pipes for discharging combustion gases. To further improve engine starting efficiency, this application also utilizes the exhaust heat from the heating device for directional recovery, using the exhaust gas generated by the heating device to assist in heating the engine. Specifically, the exhaust pipes of both the first and second heating elements are oriented towards the engine's oil pan. By directionally positioning the exhaust pipe outlet of the heating device below the oil pan, the high-temperature exhaust gas (≥200℃) generated after combustion by the first and second heating elements directly radiates heat to the engine's oil pan, thereby rapidly heating the engine oil. To prevent cold air backflow leading to heat loss from the exhaust gas, this application also installs one-way valves on the exhaust pipes of the first and second heating elements to prevent backflow.

[0026] like Figure 3The diagram shows the system structure of the operating machinery provided in this application. The controller monitors the ambient temperature and the coolant temperature in the coolant circulation loop in real time using an ambient temperature sensor and a coolant temperature sensor. To further improve heating efficiency, this application also includes a third and a fourth heating element integrated into the engine's inlet and return fuel lines. Both the third and fourth heating elements are heating resistance wires to dynamically compensate for the temperature of the flowing diesel fuel. The engine's inlet and return fuel lines are connected to the main fuel tank and auxiliary fuel tank, respectively. To prevent the fuel lines from freezing, this application also uses ceramic fiber or polyurethane foam to wrap the fuel lines, reducing heat loss and preventing localized freezing of the diesel fuel during flow. The ambient temperature sensor and coolant temperature sensor are connected to the controller. The controller, the heating resistance wires in the inlet and return fuel lines, the first heating element, and the second heating element are all connected to the intelligent power distribution box. The operating machinery's existing battery supplies power to the controller, intelligent power distribution box, first heating element, and second heating element. The controller is used to receive the engine start signal. After receiving the engine start signal, the controller receives the temperature signals collected by the ambient temperature sensor and the coolant temperature sensor, performs corresponding calculations on the received temperature signals, and sends the calculation results to the intelligent power distribution box via the bus. After receiving the results, the intelligent power distribution box outputs and controls the on / off state of the first heating element, the second heating element, the heating resistance wire of the oil inlet pipe, and the heating resistance wire of the oil return pipe.

[0027] In one embodiment of this application, a method for starting up machinery in a low-temperature environment is provided, wherein the starting method can be applied to the controller of the machinery provided in this application, such as... Figure 4 As shown, the method includes: obtaining the ambient temperature corresponding to the operating machinery and the initial temperature of the coolant in the operating machinery; when the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, controlling the heating device of the operating machinery to heat the coolant of the operating machinery, where the first temperature threshold is less than the second temperature threshold; when the current temperature of the coolant is greater than or equal to the second temperature threshold, dynamically adjusting the operation of the heating device based on the current temperature of the coolant and starting the operating machinery.

[0028] Specifically, such as Figure 5 As shown, the method flow of this application is as follows: S1. After the machine is powered on, the current ambient temperature T1 and the current coolant temperature T2 are collected in real time.

[0029] S2. Determine whether the current ambient temperature T1 and the current coolant temperature T2 meet the heating conditions. If the heating conditions are met, start the heating system, send heating commands to the first heating element and the second heating element, and execute step S3. If the heating conditions are not met, there is no need to start the heating system. In this application, the heating conditions are as follows: the current ambient temperature is less than a first temperature threshold, and the initial temperature of the coolant is less than a second temperature threshold. The first temperature threshold is less than the second temperature threshold. For example, the first temperature threshold is -20℃ and the second temperature threshold is 10℃. If T1 is greater than or equal to -20℃ and T2 is greater than or equal to 10℃, then the heating system does not need to be started. If T1 is less than -20℃ and T2 is less than 10℃, then the heating system is started. The first heating element and the second heating element generate heat by burning low-grade diesel fuel in the auxiliary fuel tank to heat the coolant. Part of the heated coolant flows to the engine through the coolant pipeline to conduct heat to the engine body, and another part heats the high-grade diesel fuel in the main fuel tank that is ready for engine use through the coolant pipeline. At the same time, the exhaust gas of the heating system is delivered to the engine oil pan through the exhaust pipeline to heat the engine oil. Meanwhile, the controller controls the heating resistance wires in the oil inlet and oil return pipelines through the intelligent power distribution box to synchronously heat the oil inlet and oil return pipelines. By using the exhaust gas from the engine heating system to increase the oil temperature, the cold wear of the engine can be effectively reduced, and the engine overhaul cycle can be extended.

[0030] S3. The controller continuously monitors the current coolant temperature T2 and determines whether it meets the starting conditions. If the conditions are met, it checks whether the high-octane fuel in the main fuel tank has reached the target temperature. If not, it controls the auxiliary fuel tank to supply the engine with low-octane fuel via a switching valve; otherwise, it controls the main fuel tank to supply the engine with high-octane fuel via the switching valve. Understandably, the high-octane fuel temperature can be collected by a temperature sensor deployed in the main fuel tank. This application effectively reduces the operating costs of machinery by using high and low-octane diesel fuel in stages, while also significantly improving the engine's cold start efficiency, reducing the starting wait time for large machinery such as mining excavators to less than 20 minutes.

[0031] In this application, the starting condition is: the current coolant temperature T2 is greater than or equal to the second temperature threshold, for example, T2≥10℃. When the coolant temperature is detected to rise to a certain level, such as 10℃, it can be considered that the engine body temperature has risen to meet the starting condition, and the engine can be started.

[0032] S4. After the start-up conditions are met, the controller starts timing and simultaneously collects the current coolant temperature T2 in real time. If the duration for which the current coolant temperature is greater than or equal to the second temperature threshold reaches the first duration threshold, such as 5 minutes, the controller stops heating the first heating element and the second heating element. S5. Continuously acquire the current temperature of the coolant. If the current coolant temperature remains below the second temperature threshold for a duration equal to or exceeding the second duration threshold (e.g., 5 minutes), the controller continuously acquires the current coolant temperature T2 and calculates the temperature difference between T2 and the desired temperature, i.e., the second temperature threshold. For example, if the coolant needs to be heated to a target temperature ≥10℃, the controller uses a PID algorithm to calculate the heat demand and heating time based on the real-time temperature difference, dynamically adjusting the power ratio of the heating device to achieve a balance between rapid heating and energy saving, thereby maintaining the coolant temperature. For example, the difference between T2 and the desired coolant temperature can be compared using the PID standard module built into the controller compilation platform. The heating time T is then calculated iteratively using the following steps to dynamically adjust the heating control of the heating device: When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the first temperature difference threshold, the operation of the first and second heating elements is controlled based on the current temperature of the coolant, the heating efficiency of the first heating element, and the heating efficiency of the second heating element. Specifically, this includes: determining the target heat required to heat the coolant to the second temperature threshold based on the temperature difference between the current temperature of the coolant and the second temperature threshold; determining the actual output power of the first and second heating elements based on their rated power and heating efficiency; determining the shortest heating time for the first and second heating elements based on the target heat and their actual output power, and controlling the first and second heating elements to heat the coolant with the shortest heating time. When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the first temperature difference threshold, and the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the second temperature difference threshold, the first heating element is controlled to stop heating the coolant of the working machinery. Based on the current temperature of the coolant and the heating efficiency of the second heating element, the second heating element is controlled to operate. Specifically, this includes: determining the target heat required to heat the coolant to the second temperature threshold based on the temperature difference between the current temperature of the coolant and the second temperature threshold; determining the actual output power of the second heating element based on its rated power and heating efficiency; determining the shortest heating time for the second heating element based on the target heat and the actual output power of the second heating element; and controlling the second heating element to heat the coolant with the shortest heating time. If the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the second temperature difference threshold, the first heating element and the second heating element are controlled to stop heating the coolant of the operating machinery; if the first temperature difference threshold is greater than the second temperature difference threshold.

[0033] The first temperature difference threshold can be set to 2, and the second temperature difference threshold can be set to 0.5. That is, when |T²-10|≥2, it is considered that the current temperature of the coolant is significantly different from the target temperature. In this case, both the first and second heating elements are simultaneously controlled to quickly heat the coolant. When 2>|T²-10|≥0.5, to save energy and reduce costs, one heating element is turned off, and only one heating element, such as the second heating element, is controlled to operate. When |T²-10|<0.5, it is considered that the temperature T² is close to the target temperature, and all heating elements and heating resistance wires are stopped. It can be understood that during the process of maintaining the coolant temperature after engine start-up, step S5 ensures that the coolant temperature remains close to 10℃, and the output of the heating device is dynamically adjusted based on the difference between the current and target temperatures, thus achieving energy savings.

[0034] Specifically, the heating requirement is calculated using the following formula: Q = C × V × ρ × △T; Where Q is the target heat; C is the specific heat capacity of the coolant, in J / (kg·℃); ρ is the density of the coolant, in m³ / kg; ΔT is the temperature rise of the coolant from temperature T2 to 10℃, i.e., ΔT=10-T2, in ℃; and V is the volume of the coolant, in m³.

[0035] Based on the rated power and heating efficiency of the first and second heating elements, the actual output power of the first and second heating elements can be expressed as follows: 2P×η; The shortest heating time for the first and second heating elements, determined based on the target heat and the actual output power of the first and second heating elements, can be expressed as: T= C×V×ρ×△T÷(2P×η); Wherein, P is the rated power of the heating device, in kW. This application uses two heating elements with the same rated power, so the rated power of the entire heating system is 2P; η is the efficiency of the heating system. Since this application uses two heating devices with the same rated power, the efficiency of the heating system can be regarded as the average of the heating efficiencies of the first heating element and the second heating element.

[0036] Understandably, when heating a single heating element is controlled, such as when heating only the second heating element, the actual output power of the second heating element can be expressed as P×η, and the shortest heating time of the second heating element can be expressed as T= C×V×ρ×△T÷(P×η). In this case, η is the heating efficiency of the second heating element.

[0037] S6. Determine if the entire machine is powered down. If not, proceed to step S5; if yes, end the control process. Simultaneously, it is understandable that during the control process, when the high-grade diesel fuel in the main fuel tank supply area is detected to have reached the target temperature, the engine fuel supply is switched from low-grade diesel fuel to high-grade diesel fuel. After the engine fuel supply is switched to high-grade diesel fuel, the heating system repeats step S5 continuously to ensure that the coolant temperature remains close to 10°C until the entire machine is powered down.

[0038] In summary, this application deploys a coolant circulation loop in the engine and main fuel tank. When starting the engine, a heating device burns low-octane fuel from the auxiliary fuel tank to heat the coolant in the circulation loop. This heated coolant then heats the engine block and the high-octane fuel in the main fuel tank. Simultaneously, when the coolant temperature reaches the starting temperature, the engine is started using the low-octane fuel from the auxiliary fuel tank. After the engine starts, the temperature of the high-octane fuel in the main fuel tank is continuously monitored. Once the high-octane fuel temperature reaches the target temperature, the high-octane fuel from the main fuel tank is switched to supply fuel to the engine. Thus, this application can effectively improve the starting efficiency of machinery in low-temperature environments and reduce energy consumption and costs.

[0039] like Figure 6 As shown, in one embodiment of this application, a starting device for operating machinery in a low-temperature environment is provided, the device comprising: The data acquisition module is configured to acquire the ambient temperature of the operating machinery and the initial temperature of the coolant in the operating machinery. The heating control module is configured to control the heating device of the working machinery to heat the coolant of the working machinery when the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold. The start control module is configured to dynamically adjust the operation of the heating device and start the working machinery based on the current temperature of the coolant when the current temperature of the coolant is greater than or equal to a second temperature threshold.

[0040] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application.

[0041] In one embodiment of this application, a computer-readable storage medium is provided, storing a computer program that, when executed by a processor, causes the processor to perform the above-described method for starting up machinery in a low-temperature environment.

[0042] In one embodiment of this application, a terminal device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the above-described method for starting up machinery in a low-temperature environment.

[0043] like Figure 7 The diagram shown is a schematic representation of a terminal device provided in an embodiment of this application. Figure 7 As shown, the terminal device 10 of this embodiment includes a processor 100, a memory 101, and a computer program 102 stored in the memory 101 and executable on the processor 100. When the processor 100 executes the computer program 102, it implements the steps in the above method embodiments. Alternatively, when the processor 100 executes the computer program 102, it implements the functions of each module / unit in the above device embodiments.

[0044] For example, computer program 102 may be divided into one or more modules / units, one or more of which are stored in memory 101 and executed by processor 100 to complete this application. One or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of computer program 102 in terminal device 10.

[0045] Terminal device 10 may be a computing device such as a desktop computer, laptop, handheld computer, or cloud server. Terminal device 10 may include, but is not limited to, a processor 100 and a memory 101. Those skilled in the art will understand that... Figure 7This is merely an example of terminal device 10 and does not constitute a limitation on terminal device 10. It may include more or fewer components than shown, or combine certain components, or different components. For example, terminal device may also include input / output devices, network access devices, buses, etc.

[0046] The processor 100 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0047] The memory 101 can be an internal storage unit of the terminal device 10, such as a hard disk or RAM of the terminal device 10. The memory 101 can also be an external storage device of the terminal device 10, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or FlashCard equipped on the terminal device 10. Furthermore, the memory 101 can include both internal and external storage units of the terminal device 10. The memory 101 is used to store computer programs and other programs and data required by the terminal device 10. The memory 101 can also be used to temporarily store data that has been output or will be output.

[0048] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0049] It should also be noted that 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 process, method, article, or apparatus. Unless otherwise specified, 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 that element.

[0050] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for starting up machinery in a low-temperature environment, characterized in that, The method includes: Obtain the ambient temperature corresponding to the operating machinery, and the initial temperature of the coolant in the operating machinery; When the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the heating device of the working machine is controlled to heat the coolant of the working machine, where the first temperature threshold is less than the second temperature threshold. If the current temperature of the coolant is greater than or equal to the second temperature threshold, the operation of the heating device is dynamically adjusted based on the current temperature of the coolant, and the working machinery is started. The heating device includes a first heating element and a second heating element. The step of dynamically adjusting the operation of the heating device based on the current temperature of the coolant includes: If the duration for which the current temperature of the coolant is greater than or equal to the second temperature threshold reaches the first duration threshold, the first heating element and the second heating element are controlled to stop heating, and the operating machinery is started. After starting the operating machinery, the current temperature of the coolant is continuously acquired. If the current temperature of the coolant is lower than the second temperature threshold for a duration that reaches the second duration threshold, the operation of the heating device is dynamically adjusted through the following steps: When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the first temperature difference threshold, the first heating element and the second heating element are controlled to work based on the current temperature of the coolant, the heating efficiency of the first heating element and the heating efficiency of the second heating element. When the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the first temperature difference threshold, and the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is greater than or equal to the second temperature difference threshold, the first heating element is controlled to stop heating the coolant of the working machine, and the second heating element is controlled to work based on the current temperature of the coolant and the heating efficiency of the second heating element. If the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the second temperature difference threshold, the first heating element and the second heating element shall be controlled to stop heating the coolant of the working machine. The first temperature difference threshold is greater than the second temperature difference threshold; When the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the method further includes: The third heating element installed in the engine oil inlet pipe of the working machinery and the fourth heating element installed in the engine oil return pipe of the working machinery are controlled to heat the oil inlet pipe and the oil return pipe. If the absolute value of the temperature difference between the current temperature of the coolant and the second temperature threshold is less than the second temperature difference threshold, the method further includes: Control the third heating element and the fourth heating element to stop heating.

2. The method according to claim 1, characterized in that, The method of controlling the operation of the first heating element and the second heating element based on the current temperature of the coolant, the heating efficiency of the first heating element, and the heating efficiency of the second heating element includes: Based on the temperature difference between the current temperature of the coolant and the second temperature threshold, the target heat required to heat the coolant to the second temperature threshold is determined; The actual output power of the first heating element and the second heating element is determined based on their rated power and heating efficiency. Based on the target heat and the actual output power of the first heating element and the second heating element, the shortest heating time of the first heating element and the second heating element is determined, and the first heating element and the second heating element are controlled to heat the coolant with the shortest heating time.

3. The method according to claim 1, characterized in that, The step of controlling the operation of the second heating element based on the current temperature of the coolant and the heating efficiency of the second heating element includes: Based on the temperature difference between the current temperature of the coolant and the second temperature threshold, the target heat required to heat the coolant to the second temperature threshold is determined; The actual output power of the second heating element is determined based on its rated power and heating efficiency. The shortest heating time of the second heating element is determined based on the target heat and the actual output power of the second heating element, and the second heating element is controlled to heat the coolant for the shortest heating time.

4. The method according to claim 1, characterized in that, The coolant is used to heat the high-octane fuel in the main fuel tank of the work machinery to start the work machinery, including: The auxiliary fuel tank of the operating machinery is controlled to supply low-grade fuel to the engine of the operating machinery to start the engine; The temperature of the high-octane fuel in the main fuel tank is continuously monitored. When the high-octane fuel in the main fuel tank reaches the target temperature, the high-octane fuel in the main fuel tank is switched to supply fuel to the engine.

5. A starting device for machinery operating in low-temperature environments, employing the starting method for machinery operating in low-temperature environments as described in any one of claims 1-4, characterized in that, The device includes: The data acquisition module is configured to acquire the ambient temperature of the operating machinery and the initial temperature of the coolant in the operating machinery. The heating control module is configured to control the heating device of the working machinery to heat the coolant of the working machinery when the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold. The start control module is configured to dynamically adjust the operation of the heating device and start the working machinery based on the current temperature of the coolant when the current temperature of the coolant is greater than or equal to the second temperature threshold.

6. A type of work machinery, employing the work machinery starting method in a low-temperature environment according to any one of claims 1-4, characterized in that, The operating machinery includes: Multiple temperature sensors are used to collect the ambient temperature of the operating machinery and the temperature of the coolant in the operating machinery; A heating device for heating the coolant; The controller is used to acquire the ambient temperature corresponding to the working machinery and the initial temperature of the coolant. When the ambient temperature is less than a first temperature threshold and the initial temperature is less than a second temperature threshold, the controller controls the heating device of the working machinery to heat the coolant of the working machinery. When the current temperature of the coolant is greater than or equal to the second temperature threshold, the controller dynamically adjusts the operation of the heating device based on the current temperature of the coolant and starts the working machinery. The heating device includes: First heating element and second heating element; Both the first heating element and the second heating element are provided with exhaust pipes for discharging combustion flue gas, and the exhaust pipes of the first heating element and the second heating element are both directed toward the oil pan of the engine of the working machinery, so that the combustion flue gas discharged by the first heating element and the second heating element heats the oil pan of the engine. Both the first heating element and the second heating element are equipped with one-way valves to prevent backflow of airflow on their exhaust pipes.

7. A computer-readable storage medium, characterized in that, The computer program stores a method for starting up machinery in a low-temperature environment as described in any one of claims 1-4, which, when executed by a processor, causes the processor to perform such method.

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