Temperature control method, device and storage medium for engineering machinery engine

Abstract

The present application discloses a temperature control method, device, cooling system, engineering machinery and storage medium for an engineering machinery engine, and relates to the technical field of engineering equipment, wherein the engineering machinery may be, for example, a fuel structure or a new energy structure. The above method includes: determining the working condition of the truck crane according to the connection status; when the working condition is an operating condition, determining whether the current temperature of the engine is in a first temperature range according to the acquired engine temperature; when the current temperature is in the first temperature range, adjusting the speed adjustment parameter of the fan speed regulator to a speed adjustment parameter value corresponding to the current temperature; wherein the lower limit value of the temperature of the first temperature range corresponds to the zero speed adjustment parameter value of the fan speed regulator under the operating condition, and the lower limit value of the temperature is greater than the temperature value corresponding to the zero speed adjustment parameter value of the fan speed regulator under the driving condition. This method can improve the thermal efficiency of the engine of the truck crane in the operating condition.

Description

Technical Field

[0001] The present application relates to the technical field of engineering equipment, and in particular to a temperature control method, device, cooling system, engineering machinery, and machine-readable storage medium for an engineering machinery engine. Background Art

[0002] Truck cranes and commercial vehicles share similar fan control technologies, primarily controlling the fan speed based on coolant temperature. Existing fan control methods for truck cranes often struggle to adapt to the crane's load conditions during practical applications. This can cause the engine temperature to drop too low under load conditions, leading to reduced thermal efficiency. However, improving engine thermal efficiency can also cause the truck crane's engine to overheat while in motion. Furthermore, the development trends of construction machinery such as truck cranes indicate that new energy architectures are already widespread, with pure electric extended-range electric, hybrid, fuel cell electric, and hydrogen engine powertrains widely adopted in truck cranes and other construction machinery. These same issues also exist in hybrid truck cranes. Therefore, developing a method to improve the thermal efficiency of truck crane engines with either fuel or new energy architectures under load conditions is a current technical challenge. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a temperature control method for a truck crane, so as to solve the technical problem of low thermal efficiency of the truck crane under hoisting conditions in the prior art.

[0004] To achieve the above-mentioned objectives, the present application provides, in a first aspect, a temperature control method for an engineering machinery engine. The engineering machinery includes an engine, a travel transmission device, an operating device, and a cooling device. The travel transmission device is connected to the engine, and the operating device is connected to the engine via a power take-off. The cooling device includes a fan for cooling a coolant and a fan speed regulator for adjusting the fan speed. The method comprises:

[0005] When the engine is in the starting state, obtain the engine temperature and the connection status of the power take-off and the engine;

[0006] Determine the working condition of the construction machinery based on the connection status, which includes driving condition and operating condition;

[0007] When the working condition is an operating condition, determining whether the current temperature of the engine is within a first temperature range according to the acquired engine temperature;

[0008] When the current temperature is within the first temperature range, adjusting the speed adjustment parameter of the fan speed regulator to a speed adjustment parameter value corresponding to the current temperature;

[0009] Among them, the lower temperature limit value of the first temperature range corresponds to the zero speed adjustment parameter value of the fan speed regulator under the operating condition, and the lower temperature limit value is greater than the temperature value corresponding to the zero speed adjustment parameter value of the fan speed regulator under the driving condition; the upper temperature limit value of the first temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator under the operating condition.

[0010] In the embodiment of the present application, the lower limit value of the temperature is less than the lower limit value of the ideal operating temperature range of the engine.

[0011] In the embodiment of the present application, the upper temperature limit of the first temperature interval is within the ideal operating temperature range.

[0012] In an embodiment of the present application, when the current temperature is greater than the upper limit of the ideal operating temperature range under the operating condition, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value; when the current temperature is less than or equal to the upper limit of the ideal operating temperature range and greater than the temperature upper limit of the first temperature range, when the construction machinery switches from the driving condition to the operating condition, the rate of change of the engine temperature after switching to the operating condition is obtained; when the rate of change of the engine temperature is positive, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value; when the rate of change of the engine temperature is negative, the fan stops running until the engine temperature is at the temperature upper limit.

[0013] In the embodiment of the present application, under the driving condition and when the current temperature is equal to the lower limit of the temperature, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value.

[0014] In an embodiment of the present application, when the engine is in a driving condition and the current temperature is in the second temperature range, the speed adjustment parameter of the fan speed regulator is positively correlated with the engine temperature, and the upper limit value of the second temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator; when the current temperature is lower than the lower limit value of the ideal operating temperature range and the current temperature is greater than the lower limit value of the temperature, when the construction machinery switches from a driving condition to an operating condition, the rate of change of the engine temperature after switching to the operating condition is obtained; when the rate of change of the engine temperature is negative, the fan stops running until the engine temperature is at the upper limit value of the temperature.

[0015] In an embodiment of the present application, obtaining the temperature of the engine includes: obtaining the temperature of the coolant and the intake temperature of the engine; and determining the temperature of the engine based on the temperature of the coolant and the intake temperature.

[0016] A second aspect of the present application provides a temperature control device for an engineering machinery engine, comprising: a memory configured to store instructions; and a processor configured to call instructions from the memory and, when executing the instructions, to implement a method for temperature control of an engineering machinery engine provided according to any of the above embodiments.

[0017] The third aspect of the present application provides a cooling system for an engineering machinery engine, comprising: a radiator; a fan for cooling the coolant flowing through the radiator; a fan speed regulator for adjusting the speed of the fan; a temperature sensor for detecting the temperature of the coolant; and a temperature control device for an engineering machinery engine as provided in the above embodiment.

[0018] The fourth aspect of the present application provides an engineering machinery, comprising: an engine; a travel transmission device, the travel transmission device is connected to the engine; an operating device, the operating device is connected to the engine via a power take-off; and a cooling system for the engineering machinery engine as provided in the above embodiment.

[0019] A fifth aspect of the present application provides a machine-readable storage medium having stored thereon instructions for enabling a machine to execute a temperature control method for an engineering machinery engine provided in accordance with any one of the above embodiments.

[0020] Through the above technical solution, the lower temperature limit of the first temperature range is set above the temperature value corresponding to the zero speed adjustment parameter value of the fan speed regulator in the driving condition, so that the engine temperature can be raised to a higher value, and the fan speed is adjusted at this higher value by controlling the speed adjustment parameter of the fan speed regulator, thereby adjusting the engine temperature, so that the engine can achieve thermal balance at a higher temperature to improve the thermal efficiency of the engine; thereby, more engine heat is converted into useful work, and the viscosity and friction coefficient of the engine lubricating oil are within a reasonable range to improve mechanical efficiency, and unnecessary fan work is avoided to reduce the mechanical energy consumption of the fan and reduce the generation of fan operation noise.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0023] Figure 1 The following schematically shows a flow chart of a temperature control method for a truck crane according to an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a curve showing the relationship between the engine temperature of a truck crane and the speed adjustment parameter of a fan speed regulator under a driving condition and an operating condition according to an embodiment of the present application is shown;

[0025] Figure 3 The schematic block diagram of the structure of a cooling system for a truck crane engine according to an embodiment of the present application is shown schematically. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations. In the embodiments of this application, certain software, components, models, and other existing solutions in the industry may be mentioned. These should be considered as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that the applicant has or will necessarily use such solutions.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] Truck cranes typically share the same engine and temperature control system for both hoisting and driving operations. Existing temperature control methods for these applications employ a single method for controlling the fan speed in the temperature control system, primarily aiming to prevent the truck crane's engine from overheating. When the truck crane arrives at the construction site and operates in the hoisting mode, the existing technology uses the same fan speed control method used in the driving mode. While the engine heat dissipation rate is the same in both operating modes, when the temperature is the same, the heat dissipation rate is the same. However, because the engine operates at a lower power during the hoisting mode, the engine heat generation rate is lower, resulting in a lower temperature that may stabilize, thus reducing the engine's thermal efficiency. Analysis has found that the maximum engine power demand during the hoisting mode is approximately half that of the driving mode. Furthermore, during the hoisting mode, the crane's operating mechanism continuously switches between four motions: luffing, slewing, telescoping, and lifting, resulting in different power requirements. The power consumption required to meet the upward lifting condition is the highest, but this operation generally does not last long. Based on this, the inventors of the present application proposed a temperature control method for an engineering machinery engine to improve the thermal efficiency of the engine under hoisting conditions and meet the heat dissipation requirements of the engine under driving conditions.

[0031] Figure 1 The following schematically shows a flow chart of a temperature control method for engineering machinery according to an embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides a temperature control method for engineering machinery, which can be applied to engineering machinery with a fuel architecture or a system energy architecture. The engineering machinery may include an engine, a travel transmission device, an operating device and a cooling device. The travel transmission device is connected to the engine, the operating device is connected to the engine through a power take-off, and the cooling device is connected to the engine. The cooling device includes a fan for cooling the coolant and a fan speed regulator for adjusting the fan speed. The temperature control method for engineering machinery provided in an embodiment of the present application can be executed, for example, by an engine control unit in a car jack, or other processors that can be used to control the cooling device.

[0032] The present invention provides a temperature control method for engineering machinery, which may include the following steps:

[0033] S102: When the engine is in the started state, obtain the engine temperature and the connection status of the power take-off and the engine;

[0034] S104, determining the working condition of the engineering machinery according to the connection status, where the working condition includes a driving condition and an operating condition;

[0035] S106: When the operating condition is an operational condition, determining whether the current temperature of the engine is within a first temperature range based on the acquired engine temperature;

[0036] S108. When the current temperature is within the first temperature range, adjust the speed adjustment parameter of the fan speed regulator to a speed adjustment parameter corresponding to the current temperature;

[0037] Among them, the lower temperature limit value of the first temperature range corresponds to the zero speed adjustment parameter value of the fan speed regulator under the operating condition, and the lower temperature limit value is greater than the temperature value corresponding to the zero speed adjustment parameter value of the fan speed regulator under the driving condition; the upper temperature limit value of the first temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator under the operating condition.

[0038] The temperature control method for construction machinery provided in an embodiment of the present application uses the connection status between the power take-off (PTO) and the engine as a criterion to determine the working condition of the construction machinery. When the connection status is closed, the engine drives the working device via the PTO, and the construction machinery is in the working condition. In the working condition, if the current engine temperature is within a first temperature range, the speed adjustment parameter of the fan speed regulator of the fan will change with the current temperature. Because the engine power demand in the working condition is lower than that in the driving condition, the engine generates less heat in the working condition. Therefore, if the existing temperature control method for the driving condition is used, when the current temperature is low, the heat exchange rate between the engine and the outside world will be the same as the heat generation rate of the engine, thereby allowing the engine to reach thermal equilibrium at a lower temperature. By setting the lower limit of the temperature in the first temperature range above the temperature corresponding to the zero speed adjustment parameter value of the fan speed regulator in the driving condition, the engine temperature can be raised to a higher value. At this higher value, the fan speed is adjusted by controlling the speed adjustment parameter of the fan speed regulator, thereby adjusting the engine temperature. This allows the engine to achieve thermal equilibrium at a higher temperature, thereby improving the engine's thermal efficiency. Therefore, the temperature control method for engineering machinery provided in the embodiment of the present application is suitable for engineering machinery with a fuel architecture or engineering machinery with a new energy architecture (such as a hybrid architecture) that can be based on engine-driven driving conditions and operating conditions. It can convert more engine heat into useful work under operating conditions, and make the viscosity and friction coefficient of the engine lubricating oil within a reasonable range to improve mechanical efficiency, and avoid unnecessary fan work to reduce the mechanical energy consumption of the fan and reduce the generation of fan operation noise.

[0039] It is understood that the construction machinery in the embodiments of the present application may include cranes, excavators, and pump trucks, among others. The operating devices may include the crane's lifting device, the excavation device of the excavator, and the pumping device of the pump truck. The operating conditions may be understood as the operating conditions of the various operating devices described above during operation. In step S106, in the first temperature range, the speed adjustment parameter of the fan speed regulator is correlated with the current engine temperature. This correlation may be linear, exponential, or broken line. The speed adjustment parameter of the fan speed regulator and the current engine temperature generally exhibit a positive correlation, i.e., the higher the current temperature, the larger the speed adjustment parameter. Similarly, during driving conditions, the fan speed adjustment parameter and the current temperature generally exhibit a positive correlation. The fan speed regulator may be, for example, a fan clutch such as an electromagnetic clutch or a hydraulic clutch, or a voltage or current regulator. If the fan speed regulator is a fan clutch, the speed adjustment parameter is the degree of engagement of the fan clutch. If the fan speed regulator is a voltage or current regulator, the speed adjustment parameter is the voltage or current value, respectively. Therefore, in step S108, the speed adjustment parameter of the fan speed regulator is adjusted to the speed adjustment parameter value corresponding to the current temperature, that is, the corresponding speed adjustment parameter value is determined according to the current temperature based on the above-mentioned linear, exponential, broken line and other correlation relationships.

[0040] Specifically, if the fan speed regulator is a fan clutch, the speed regulation parameter is the degree of engagement of the fan clutch. In a first temperature range, the current temperature and the speed regulation parameter are, for example, linearly correlated. Therefore, when the current temperature is a certain value within the first temperature range, a corresponding degree of engagement exists, and this degree of engagement directly reflects the fan speed.

[0041] Experimental verification of a truck crane in operating conditions has shown that engine efficiency is increased by 1%, engine wear is reduced to improve engine reliability, fan mechanical energy consumption is reduced by 10%, and fuel consumption in operating conditions is reduced by 0.3L / h.

[0042] As an example, in the case where the fan speed regulator is a fan clutch, in step S108, the zero speed adjustment parameter value may correspond to the initial engagement point of the fan clutch, and the engagement degree of the initial engagement point is 0%, and the maximum speed adjustment parameter value may correspond to the full engagement point of the fan clutch, and the engagement degree of the full engagement point is 100%. In an embodiment of the present application, the speed adjustment parameters corresponding to the zero speed adjustment parameter value and the maximum speed adjustment parameter value may also be set according to actual conditions. For example, in the case where the fan speed regulator is a fan clutch, the engagement degree of the initial engagement point is 10%, and the engagement degree of the full engagement point is 90%. The engagement degree adjustment of the fan clutch can be achieved through an electronically controlled silicone oil clutch or an electromagnetic clutch. The electronically controlled silicone oil clutch fan determines the friction force by adjusting the amount of silicone oil in the working chamber to control the speed adjustment parameter, and the electromagnetic clutch fan controls the speed adjustment parameter by adjusting the magnitude of the electromagnetic force.

[0043] In some embodiments of the present application, the lower limit value of the temperature of the first temperature range is less than the lower limit value of the ideal operating temperature range of the engine.

[0044] Under operating conditions, it is still necessary to prevent the engine from overheating, so the lower limit of the temperature in the first temperature range is set below the lower limit of the ideal operating temperature range, so that the current temperature of the engine can be controlled before entering the ideal operating temperature range.

[0045] Furthermore, in some embodiments of the present application, the upper temperature limit of the first temperature interval is within the ideal operating temperature range.

[0046] Through the above configuration, the first temperature range overlaps with the ideal operating temperature range of the engine, and when the current engine temperature reaches the upper temperature limit of the first temperature range, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value. Therefore, the temperature control method for an automobile engine provided in an embodiment of the present application can achieve thermal equilibrium within the ideal temperature range by adjusting the speed adjustment parameter of the fan speed regulator when the current engine temperature is within the ideal temperature range.

[0047] Furthermore, in some embodiments of the present application, when the engineering machinery is in an operating condition and the current temperature is greater than the upper limit of the ideal operating temperature range, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value;

[0048] When the current temperature is less than or equal to the upper limit of the ideal operating temperature range and greater than the upper limit of the first temperature range, the rate of change of the engine temperature is obtained when the construction machinery switches from the driving mode to the working mode;

[0049] When the rate of change of the engine temperature is positive, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value;

[0050] When the rate of change of the engine temperature is negative, the fan stops running until the engine temperature reaches the upper temperature limit.

[0051] During driving, the engine's current temperature is between the upper limit of the ideal operating temperature range and the upper limit of the first temperature range, meaning the engine is operating within the ideal temperature range. If the construction machine switches from driving to operating mode, the actual power demand placed on the engine during operating mode will significantly decrease, and therefore, the heat generated by the engine will also significantly decrease. If the acquired engine temperature change rate is negative, indicating that the fan is gradually cooling the engine, the fan is stopped, e.g., by adjusting the fan clutch engagement to 0%. This not only slows engine cooling or allows the engine to achieve thermal equilibrium within the ideal temperature range, but also avoids unnecessary mechanical energy consumption by the fan.

[0052] As an example, the construction machinery is a truck crane, and the fan speed regulator is a fan clutch, see Figure 2 The horizontal axis T is temperature, and the vertical axis R is the degree of engagement of the fan clutch. The temperature value corresponding to the initial engagement point of the fan clutch in the driving condition is 80 degrees, and the temperature value corresponding to the full engagement point of the fan clutch in the driving condition is 90 degrees. The lower limit of the temperature in the first temperature range of the hoisting condition is 90 degrees, and its upper limit is 96 degrees. The ideal temperature range of the engine is 95 to 100 degrees. Based on this, if the truck crane switches from the driving condition to the hoisting condition when the current engine temperature is between 96 and 100 degrees, the rate of change of the engine temperature is obtained, and the fan clutch is controlled based on the positive or negative value of the rate of change.

[0053] In some embodiments of the present application, in a driving condition and when the current temperature is equal to the lower temperature limit, the speed adjustment parameter of the fan speed regulator is at a maximum speed adjustment parameter value.

[0054] Furthermore, in some embodiments of the present application, in a driving condition where the current temperature is within a second temperature range, the speed adjustment parameter of the fan speed regulator is positively correlated with the engine temperature, and the upper limit of the second temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator;

[0055] When the current temperature is less than the lower limit of the ideal operating temperature range and greater than the lower limit of the temperature range, and the truck crane switches from the driving mode to the operating mode, obtain the rate of change of the engine temperature after switching to the operating mode;

[0056] When the rate of change of the engine temperature is negative, the fan stops running until the engine temperature reaches the upper temperature limit.

[0057] During driving conditions, when gradually warming up from a low temperature, if the construction machine switches to operating mode, the heat generated by the engine will drop significantly. If the acquired engine temperature change rate is negative, the fan is stopped, reducing the fan's mechanical energy consumption and preventing the current engine temperature from dropping further, thus preventing a decrease in engine thermal efficiency.

[0058] Based on the above, if the rate of change of the engine temperature is positive, the speed adjustment parameter of the fan speed regulator is adjusted according to the correlation between the speed adjustment parameter of the fan speed regulator and the current temperature of the engine in the first temperature range.

[0059] Specifically, the rate of change of the engine temperature can be determined based on the engine temperature at the start time and the engine temperature at the end time of the preset time period, and the rate of change of the engine temperature can be updated in real time at preset time intervals until the engine temperature reaches the upper temperature limit.

[0060] In some embodiments of the present application, obtaining the engine temperature in step S102 may include:

[0061] Get the coolant temperature and the engine intake air temperature;

[0062] The engine temperature is determined based on the coolant temperature and intake air temperature.

[0063] Furthermore, obtaining the engine temperature may also include obtaining an air conditioning switch signal; and determining the engine temperature according to the coolant temperature, the intake air temperature, and the air conditioning switch signal.

[0064] The present application also provides a temperature control device for an engineering machinery engine, comprising a memory and a processor. The memory is configured to store instructions; the processor is configured to retrieve the instructions from the memory and, when executing the instructions, implement the method for temperature control of an engineering machinery engine provided in accordance with any of the above-described embodiments.

[0065] See also Figure 3 The present application also provides a cooling system for an engineering machinery engine, comprising a radiator 330, a fan 340, a fan speed regulator 350, a temperature control device 360, and a temperature sensor 370. The fan 340 is used to cool the coolant flowing through the radiator 330; the fan speed regulator 350 is used to adjust the fan speed; the temperature sensor 370 is used to detect the temperature of the coolant; and the temperature control device 360 ​​may be the temperature control device for an engineering machinery engine provided in the above-mentioned embodiment.

[0066] It can be understood that the radiator 330 and the engine 310 are in contact with each other through a coolant pipe, and the coolant flows in the cooling pipe and is driven by the coolant pump 320 .

[0067] The present application also provides an engineering machine comprising an engine, a travel transmission, and a working device. The travel transmission is connected to the engine, and the working device is connected to the engine via a power take-off. The travel transmission of the engineering machine can be connected to the engine via a transmission. The working device of the engineering machine is connected to the transmission via the power take-off.

[0068] An embodiment of the present application further provides a machine-readable storage medium having stored thereon instructions for causing a machine to execute the above-mentioned method for temperature control of an engineering machinery engine.

[0069] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0070] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0071] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0072] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0073] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0074] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0075] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0076] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0077] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A temperature control method for an engineering machinery engine, characterized in that: The engineering machine includes an engine, a travel transmission device, a working device, and a cooling device, wherein the travel transmission device is connected to the engine, the working device is connected to the engine via a power take-off, and the cooling device includes a fan for cooling a coolant and a fan speed regulator for adjusting the fan speed; the method includes: When the engine is in a started state, obtaining the temperature of the engine and the connection state between the power take-off and the engine; determining the working condition of the engineering machinery according to the connection state, wherein the working condition includes a driving condition and an operating condition; When the operating condition is the working condition, determining whether the current temperature of the engine is within a first temperature range according to the acquired temperature of the engine; When the current temperature is within the first temperature range, adjusting the speed adjustment parameter of the fan speed regulator to a speed adjustment parameter value corresponding to the current temperature; Among them, the lower temperature limit value of the first temperature range corresponds to the zero speed adjustment parameter value of the fan speed regulator under the operating condition, and the lower temperature limit value is greater than the temperature value corresponding to the zero speed adjustment parameter value of the fan speed regulator under the driving condition; the upper temperature limit value of the first temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator under the operating condition.

2. The method according to claim 1, characterized in that The lower limit of the temperature is less than the lower limit of the ideal operating temperature range of the engine.

3. The method according to claim 2, characterized in that The upper temperature limit of the first temperature range is within the ideal operating temperature range.

4. The method according to claim 3, characterized in that When the current temperature is greater than the upper limit of the ideal operating temperature range under the operating condition, the speed adjustment parameter of the fan speed regulator is at the maximum speed adjustment parameter value; When the current temperature is less than or equal to the upper limit of the ideal operating temperature range and greater than the upper limit of the first temperature range, and the engineering machine switches from a driving mode to an operating mode, obtaining a rate of change of the engine temperature after switching to the operating mode; When the rate of change of the engine temperature is positive, the speed adjustment parameter of the fan speed regulator is at a maximum speed adjustment parameter value; When the rate of change of the engine temperature is negative, the fan stops operating until the engine temperature reaches the upper temperature limit.

5. The method according to claim 3, characterized in that In the driving condition and when the current temperature is equal to the lower limit of the temperature, the speed adjustment parameter of the fan speed regulator is at a maximum speed adjustment parameter value.

6. The method according to claim 2, characterized in that When the current temperature is within the second temperature range and the driving condition is in the driving condition, the speed adjustment parameter of the fan speed regulator is positively correlated with the temperature of the engine, and the upper limit of the second temperature range corresponds to the maximum speed adjustment parameter value of the fan speed regulator; When the current temperature is less than a lower limit of the ideal operating temperature range and greater than the lower limit of the temperature range, and the engineering machine switches from a driving mode to an operating mode, obtaining a rate of change of the engine temperature after switching to the operating mode; When the rate of change of the engine temperature is negative, the fan stops operating until the engine temperature reaches the upper temperature limit.

7. The method according to claim 1, characterized in that Obtaining the temperature of the engine includes: obtaining the temperature of the coolant and the intake air temperature of the engine; The temperature of the engine is determined based on the temperature of the coolant and the intake air temperature.

8. A temperature control device for an engineering machinery engine, characterized in that: include: a memory configured to store instructions; The processor is configured to call the instructions from the memory and implement the method for temperature control of an engineering machinery engine according to any one of claims 1 to 7 when executing the instructions.

9. A cooling system for an engineering machinery engine, characterized in that: include: heat sink; a fan, configured to cool the coolant flowing through the radiator; A fan speed regulator, used to adjust the speed of the fan; a temperature sensor, used to detect the temperature of the coolant; The temperature control device for an engineering machinery engine as claimed in claim 8.

10. An engineering machine, characterized in that: include: engine; a travel transmission device connected to the engine; an operating device connected to the engine via a power take-off; The cooling system for an engineering machinery engine as claimed in claim 9.

11. A machine-readable storage medium, characterized in that The machine-readable storage medium stores instructions, which are used to enable a machine to execute the temperature control method for an engineering machinery engine according to any one of claims 1 to 7.

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