Method for starting engineering equipment, processor and machine readable storage medium

Abstract

The invention discloses a method for starting engineering equipment, a processor and a machine readable storage medium, and the method comprises the steps: obtaining the initial rotating speed of an engine when the environment where the engineering equipment starts to run is a low-temperature environment; if the initial rotating speed is equal to the preset rotating speed, acquiring a current voltage value of a storage battery of the engineering equipment; if the current voltage value is larger than the preset minimum voltage value, the current electric quantity state of the storage battery is determined according to the current voltage value, a preheating strategy corresponding to the current electric quantity state is executed on multiple to-be-heated objects, and the multiple to-be-heated objects comprise the storage battery, hydraulic oil, cooling liquid, fuel oil and engine oil; after the preheating strategy is executed, air inlet preheating operation is executed on the engine; and after the air inlet preheating operation is completed, an engine of the engineering equipment is started. Different preheating schemes can be executed according to different electric quantities, so that the engineering equipment is successfully started in a low-temperature environment on the premise of ensuring the safety of the electric quantities, and the low-temperature adaptability of the engineering equipment is improved.

Description

Technical Field

[0001] This application relates to the technical field of construction machinery, and specifically relates to a method, a processor, and a machine-readable storage medium for starting construction equipment. Background Art

[0002] With the globalization of construction machinery, more and more low-temperature construction environments have emerged, and some even reach dozens of degrees below zero Celsius. For construction equipment that usually operates in above-zero temperature environments, such as concrete pumps, when the ambient temperature is too low, there are significant differences in battery discharge performance, hydraulic oil viscosity, coolant fluidity, fuel flammability, and diesel engine efficiency compared to normal temperature. When the impact is severe, it may even lead to serious consequences such as product startup failure and reduced operation efficiency. Therefore, some construction equipment has problems with difficult normal startup in low-temperature environments. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a method, a processor, and a machine-readable storage medium for starting construction equipment to solve the problem that some construction equipment has difficulty in normal startup in low-temperature environments in the prior art.

[0004] To achieve the above purpose, the first aspect of this application provides a method for starting construction equipment, and the method includes:

[0005] When the environment where the construction equipment starts to operate is a low-temperature environment, enter the low-temperature working mode and obtain the initial speed of the engine of the construction equipment;

[0006] When the initial speed is equal to the preset speed, obtain the current voltage value of the battery of the construction equipment;

[0007] When the current voltage value is greater than the preset minimum voltage value, determine the current power state of the battery according to the current voltage value, and execute the preheating strategy corresponding to the current power state on multiple objects to be heated in the construction equipment. The multiple objects to be heated include the battery, hydraulic oil, coolant, fuel, and engine oil;

[0008] After executing the preheating strategy, perform an intake preheating operation on the engine;

[0009] After the intake preheating operation is completed, start the engine of the construction equipment.

[0010] In an embodiment of the present application, the current power state of the storage battery is determined according to the current voltage value, and a preheating strategy corresponding to the current power state is executed for a plurality of objects to be heated in the engineering equipment, including: when the current voltage value is less than or equal to the first preset voltage, it is determined that the current power state of the storage battery is a low power state, and the preheating strategy corresponding to the low power state is not to perform preheating treatment on each object to be heated; when the current voltage value is greater than the first preset voltage and less than the second preset voltage, it is determined that the current power state of the storage battery is a high power state, and the preheating strategy corresponding to the high power state is to perform preheating treatment on a plurality of target objects to be heated among the plurality of objects to be heated, and the plurality of target objects to be heated include hydraulic oil, fuel oil, and engine oil; when the current voltage value is greater than the second preset voltage, it is determined that the current power state of the storage battery is a full power state, and the preheating strategy corresponding to the full power state is to perform preheating treatment on the plurality of objects to be heated respectively.

[0011] In an embodiment of the present application, performing preheating treatment on a plurality of target objects to be heated among the plurality of objects to be heated includes: for any target object to be heated, obtaining the current temperature and the set temperature of the target object to be heated; when the current temperature is less than the set temperature, determining the target preheating duration of the target object to be heated according to the current temperature and the set temperature; when the target preheating duration is greater than or equal to the preset system preheating duration, performing a preheating operation on the target object to be heated until the actual preheating duration reaches the preset system preheating duration; when the target preheating duration is less than the preset system preheating duration, after a waiting interval duration, performing a preheating operation on the target object to be heated until the actual preheating duration reaches the target preheating duration, where the interval duration is the difference between the preset system preheating duration and the target preheating duration.

[0012] In an embodiment of the present application, the method further includes: when the current temperature is greater than or equal to the set temperature, not performing a preheating operation on the target object to be heated.

[0013] In an embodiment of the present application, the method further includes: after the engine is started, obtaining the engine speed; when the engine speed is greater than the preset idle speed value, performing temperature cycle control on the plurality of objects to be heated so that the temperatures of the plurality of objects to be heated are respectively within the corresponding preset working temperature ranges.

[0014] In an embodiment of the present application, performing an intake preheating operation on the engine includes: obtaining the current ambient temperature of the environment where the engineering equipment is located; determining the intake preheating duration according to the current ambient temperature; and performing an intake preheating operation on the engine based on the intake preheating duration.

[0015] In an embodiment of the present application, the method further includes: when the initial speed is greater than a preset speed, determining whether the initial speed is greater than a preset idle speed value; when the initial speed is greater than the preset idle speed value, performing temperature cycle control on a plurality of objects to be heated, so that the temperatures of the plurality of objects to be heated are respectively within corresponding preset working temperature ranges.

[0016] In an embodiment of the present application, the method further includes: when the current voltage value is less than a preset minimum voltage value, determining that the storage battery is currently in a power deficit state, stopping starting the engine, and outputting a low power reminder.

[0017] In an embodiment of the present application, the method further includes: after the generator of the engineering equipment enters the power generation state, obtaining the current speed of the engine and the heating voltage of the engineering equipment; matching the power generation curve of the generator according to the current speed to obtain the current power generation amount; determining a target power generation time according to the current power generation amount, a preset minimum heating power, a preset minimum heating time, the heating voltage, a preset intake air preheating power consumption, an engine starting power consumption, and the current power generation amount; controlling the engine to operate for the target power generation time to complete charging of the generator.

[0018] A second aspect of the present application provides a processor configured to execute the above method for starting an engineering equipment.

[0019] A third aspect of the present application is a machine-readable storage medium, on which instructions are stored, and the instructions are used to cause a machine to execute the above method for starting an engineering equipment.

[0020] Through the above technical solution, when the environment where the engineering equipment starts to operate is a low-temperature environment, enter the low-temperature working mode, obtain the initial speed of the engine of the engineering equipment, and then, when the initial speed is equal to the preset speed, obtain the current voltage value of the storage battery of the engineering equipment. Next, when the current voltage value is greater than the preset minimum voltage value, determine the current power state of the storage battery according to the current voltage value, and execute a preheating strategy corresponding to the current power state on a plurality of objects to be heated in the engineering equipment. The plurality of objects to be heated include a storage battery, hydraulic oil, coolant, fuel, and engine oil. After executing the preheating strategy, perform intake air preheating operation on the engine. Finally, after the intake air preheating operation is completed, start the engine of the engineering equipment. The present application can execute different preheating schemes according to different power levels, so as to successfully start the engineering equipment in a low-temperature environment on the premise of ensuring power safety, and improve the low-temperature adaptability of the engineering equipment.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation part. 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 specific implementation manners, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. In the accompanying drawings:

[0023] Figure 1 It is a structural block diagram of a cryogenic concrete pump control system provided for a specific embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of a liquid heating process provided for a specific embodiment of the present application;

[0025] Figure 3 It is a schematic flow chart of a method for starting engineering equipment provided for an embodiment of the present application;

[0026] Figure 4 It is a preheating control flow chart provided for a specific embodiment of the present application;

[0027] Figure 5 It is a preheating control flow chart provided for another specific embodiment of the present application;

[0028] Figure 6 It is a logic diagram of temperature cycle control of an engineering equipment provided for an embodiment of the present application. Specific Implementation Manner

[0029] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present application. It should be understood that the specific implementation manners 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present application, the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0032] In the embodiments of the present application, the engineering equipment refers to engineering equipment whose working media include fuel, coolant, engine oil, and hydraulic oil, such as concrete equipment, lifting equipment, excavating equipment, and compaction equipment, etc. For ease of understanding, the following takes a concrete pump as an example of the engineering equipment for illustration. It can be understood that the following is only for illustrative purposes of the solution and does not limit the embodiments of the present application.

[0033] A specific embodiment of the present application proposes a super-low temperature concrete pump control system. The method for starting the engineering equipment can be carried on the super-low temperature concrete pump control system to achieve the control of the concrete pump in a super-low temperature environment. Figure 1 It is a structural block diagram of a super-low temperature concrete pump control system provided by a specific embodiment of the present application. As Figure 1 shown, the super-low temperature concrete pump control system includes a controller, a display, a remote interaction platform, an engine ECU, a battery temperature control box, a hydraulic oil temperature sensor, an ambient temperature sensor, a pump driving pressure sensor, a heating system, and a pumping control system.

[0034] Specifically, the controller is responsible for receiving all signals and issuing instructions. The display is used to display various key information. The remote interaction platform is used for remote interaction for remote storage and analysis of data. In addition, the remote platform can not only remotely read data but also remotely issue instructions, providing convenience for operators to operate the equipment in a low-temperature environment. The engine ECU communicates with the controller, oil temperature sensor, fuel temperature sensor, and coolant temperature sensor, and is used to obtain the data of the oil temperature sensor, fuel temperature sensor, and coolant temperature sensor, and send it to the controller through communication methods such as a bus. The battery control box is equipped with a temperature sensor and a battery. The temperature sensor is installed on the side of the box away from the heating end and is used to measure the ambient temperature inside the box. The battery voltage value can be read by the controller, and the battery can be selected as a model with battery management or a special battery for low temperature. The hydraulic oil temperature sensor is installed on the hydraulic oil tank of the concrete pump, also installed away from the heating end, and is used to measure the non-local temperature of the hydraulic oil tank. The ambient temperature sensor is installed at the working parts of the whole machine away from the heat generating end and is used to measure the ambient temperature. The pumping pressure sensor is installed on the pumping main valve block and is used to measure the pressure value during pumping. The pumping pressure value can intuitively reflect the resistance encountered by the product during operation. The heating system includes 5 parts: a battery heating subsystem, a liquid heating subsystem, a fuel heating subsystem, an oil heating subsystem, and an engine intake preheating subsystem.

[0035] Specifically, the battery heating subsystem is installed in the battery control box and is used to heat the air to increase the ambient temperature inside the battery box, thereby improving battery performance.

[0036] Specifically, the liquid heating subsystem includes a liquid heater, a hydraulic oil heating switch valve, a cooling system heating switch valve, and a cooling system self-circulation switch valve. Figure 2 The figure is a schematic diagram of a liquid heating process provided by a specific embodiment of the present application. As Figure 2 shown, the process of liquid heating is to draw the coolant from the engine to the liquid heater and heat it by a heating motor, and then pass through the pipeline through the hydraulic oil heating switch valve and flow through the heat exchange structure in the hydraulic oil tank to transfer heat to the hydraulic oil, and finally return to the engine coolant system. Among them, the liquid heater can work in two gears. In the first gear, the power is relatively low, and the heated coolant is only used for heat exchange of the hydraulic oil. At this time, the hydraulic oil heating switch valve is opened and the cooling system heating switch valve is closed. In the second gear, the heating power is higher, and both heating switch valves are opened. The output heat not only provides heating for the hydraulic oil but also provides heating for the engine cooling system. During the heating process, the self-circulation switches are all in the closed state. When neither the hydraulic oil nor the coolant needs heating, both the hydraulic oil heating switch valve and the cooling system heating switch valve are closed, and the cooling system self-circulation switch valve is opened to make the coolant circulate by itself.

[0037] Specifically, for fuel heating and engine oil heating, both are achieved by installing heating elements on the ring structures of the fuel and engine oil filtration devices, thereby indirectly heating the fuel and engine oil. Intake air preheating is an optional function of the engine, which is used to heat the engine intake air and is executed when the ECU is powered on in the ON position. It can be understood that in addition to heating the filter, the fuel heating system can also heat components such as the fuel tank and fuel supply pipeline.

[0038] The pumping control system is basically the same as that of a conventional concrete pump. The main difference is that the resistance generated by the system is greater at low temperatures. Therefore, in order to protect the piston and the main cylinder, it will control the 10.1 displacement valve to execute the low-temperature pumping control logic at low temperatures. The cooling system is used for heat dissipation in non-low-temperature environments. In addition, the pumping control system also includes a fuel level sensor to collect the remaining fuel and remind the customer to refuel in a timely manner.

[0039] In the concrete pump system, the working media in the battery, hydraulic system, and engine system are all easily affected by low temperatures. Specifically, in low temperatures, the battery power of the battery will rapidly decay; the viscosity of the hydraulic oil increases at low temperatures, resulting in an increase in the overall load; the fluidity of the engine fuel, coolant, and engine oil all deteriorates, resulting in a greater impact on the engine starting performance. All of the above situations will ultimately manifest as problems such as a large low-temperature load on the concrete pump, difficult engine starting, and large low-temperature pumping pressure losses. To solve the problem of difficult starting of the product in the ultra-low temperature environment of the concrete pump, the embodiments of the present application provide a method for starting construction equipment, which can be applied to the concrete pump control system to achieve the successful start and operation of the concrete pump in the ultra-low temperature environment.

[0040] Figure 3 It is a schematic flow chart of a method for starting construction equipment provided by the embodiments of the present application. As Figure 3 shown, the embodiments of the present application provide a method for starting construction equipment. Taking the construction equipment as a concrete pump and the method being applied to the processor of the concrete pump as an example, the method may include the following steps.

[0041] Step 101, when the environment where the construction equipment starts to operate is a low-temperature environment, enter the low-temperature working mode and obtain the initial speed of the engine of the construction equipment.

[0042] Specifically, when the engineering equipment starts to run, the ambient temperature is first detected to obtain the current ambient temperature. The current ambient temperature is compared with the low-temperature threshold. If the current ambient temperature is lower than the low-temperature threshold, it is determined that the equipment has entered a low-temperature environment, and the engineering equipment enters the low-temperature working mode. Otherwise, the engineering equipment maintains the normal working mode, without the need for heating control, and the engine can be directly started. Among them, the low-temperature threshold can be set when the engineering equipment leaves the factory, or can be set according to the properties of working media such as hydraulic oil and fuel used in the engineering equipment. In one example, when this method is applied to a concrete pump, in the low-temperature working mode, when the concrete pump starts pumping, the processor will execute low-temperature displacement control to keep the pumping displacement running at a relatively small value, so as to slowly push the main cylinder to move and extend the piston life. In this way, by restricting the displacement in the low-temperature environment, the speed of the action is forced to slow down to reduce the possibility of the piston stuttering when moving in the oil cylinder.

[0043] It can be understood that when the engineering equipment starts to run, in order to determine whether the engine has been successfully started, the processor can obtain the initial speed of the engine of the engineering equipment at the current moment to judge the state of the engine.

[0044] Step 102, when the initial speed is equal to the preset speed, obtain the current voltage value of the storage battery of the engineering equipment.

[0045] It can be understood that the preset speed is the threshold for judging whether the engine has been started, usually 0. Specifically, after obtaining the initial speed of the engine, it can be judged whether the initial speed is greater than the preset speed. If it is greater than the preset speed, it means that the engine has been started, and the heating treatment of each working medium in the engineering equipment can be omitted. When the initial speed is equal to the preset speed, it means that the engine has not been successfully started. To ensure that the engineering equipment can successfully start the engine in a low-temperature environment, it is necessary to further heat-treat each working medium in the engineering equipment. Considering that the heating treatment consumes the power of the storage battery, the current voltage value of the storage battery can be obtained first to judge the current power state of the storage battery.

[0046] Step 103, when the current voltage value is greater than the preset minimum voltage value, determine the current power state of the storage battery according to the current voltage value, and execute the preheating strategy corresponding to the current power state for multiple objects to be heated in the engineering equipment. The multiple objects to be heated include the storage battery, hydraulic oil, coolant, fuel, and engine oil.

[0047] It can be understood that the preset minimum voltage value is the critical value of the storage battery's power shortage. The multiple objects to be heated in the engineering equipment are multiple working media to be heated, including the storage battery, hydraulic oil, coolant, fuel, and engine oil.

[0048] Specifically, compare the current voltage value with the preset minimum voltage value. When the current voltage value is greater than or equal to the minimum voltage value, it indicates that the battery power can still be used for heating. To ensure the successful start of the engineering equipment in a low-temperature environment while ensuring power safety, the current power state of the battery can be further determined based on the current voltage value of the battery, and then the corresponding preheating strategy can be executed according to the current power state. For example, some of the objects to be heated can be selected for preheating from multiple objects to be heated according to the power state. In this way, the power safety during the engine start process can be ensured.

[0049] In the embodiment of the present application, the method may further include: when the current voltage value is less than the preset minimum voltage value, it is determined that the battery is currently in a power-deficient state, the engine start is stopped, and a low-power prompt is output.

[0050] Specifically, when the current voltage value is less than the preset minimum voltage value, it indicates that the battery is already in a power-deficient state. At this time, heating is not suitable, heating needs to be prohibited and the engine start is stopped, and at the same time, a low-power prompt is output to prompt the operator, and the operator can solve this problem by borrowing an external backup power source.

[0051] Step 104, after the preheating strategy is executed, perform an intake preheating operation on the engine.

[0052] It can be understood that after the preheating strategies for each working medium are completed, to ensure the normal start of the engine, an intake preheating operation on the engine is also required.

[0053] In the embodiment of the present application, performing an intake preheating operation on the engine may include: obtaining the current ambient temperature of the environment where the engineering equipment is located; determining the intake preheating duration according to the current ambient temperature; and performing an intake preheating operation on the engine based on the intake preheating duration.

[0054] Specifically, according to the current ambient temperature, the characteristics of the intake system, and the characteristics of the engine, including the specifications of the engine signal, etc., the intake preheating duration is obtained according to experience. Then, the engine intake preheating operation is performed until the intake preheating duration is reached.

[0055] Step 105, after the intake preheating operation is completed, start the engine of the engineering equipment.

[0056] Specifically, perform an intake preheating operation on the engine and at the same time try to start the engine until the intake preheating operation is completed and the engine is successfully started. In this way, the successful start of the engineering equipment in a low-temperature environment is achieved.

[0057] Through the above technical solution, when the environment where the engineering equipment starts to operate is a low-temperature environment, it enters the low-temperature working mode, obtains the initial speed of the engine of the engineering equipment, and then, when the initial speed is equal to the preset speed, obtains the current voltage value of the storage battery of the engineering equipment. Next, when the current voltage value is greater than the preset minimum voltage value, determines the current power state of the storage battery according to the current voltage value, and executes the preheating strategy corresponding to the current power state for multiple objects to be heated in the engineering equipment. The multiple objects to be heated include the storage battery, hydraulic oil, coolant, fuel, and engine oil. After executing the preheating strategy, performs intake air preheating operation on the engine. Finally, after the intake air preheating operation is completed, starts the engine of the engineering equipment. This application can execute different preheating schemes according to different power levels, thereby achieving the successful start of the engineering equipment in a low-temperature environment on the premise of ensuring power safety, and improving the low-temperature adaptability of the engineering equipment.

[0058] In the embodiment of the present application, determining the current power state of the storage battery according to the current voltage value and executing the preheating strategy corresponding to the current power state for multiple objects to be heated in the engineering equipment may include: when the current voltage value is less than or equal to the first preset voltage, determining that the current power state of the storage battery is a low power state, and the preheating strategy corresponding to the low power state is not to perform preheating treatment on each object to be heated; when the current voltage value is greater than the first preset voltage and less than the second preset voltage, determining that the current power state of the storage battery is a high power state, and the preheating strategy corresponding to the high power state is to perform preheating treatment on multiple target objects to be heated among the multiple objects to be heated. The multiple target objects to be heated include hydraulic oil, fuel, and engine oil; when the current voltage value is greater than the second preset voltage, determining that the current power state of the storage battery is a full power state, and the preheating strategy corresponding to the full power state is to perform preheating treatment on multiple objects to be heated respectively.

[0059] Specifically, the first preset voltage is the critical value for judging whether the battery power is relatively sufficient, and the second preset voltage is the critical value for judging whether the voltage is sufficient. Specifically, when the current voltage value is between the preset minimum voltage value and the first preset voltage, it indicates that the battery power is low and not enough to support the preheating of each working medium. At this time, the preheating strategy is not to preheat each object to be heated, but directly start the intake air preheating of the engine. When the current voltage value is between the first preset voltage and the second preset voltage, it indicates that the battery power is relatively sufficient. At this time, the key subsystems of the engineering equipment can be preheated. The key subsystems are the above-mentioned multiple target objects to be heated, including hydraulic oil, fuel oil, and engine oil. After preheating each key subsystem, the intake air preheating of the engine is performed to start the engine faster. When the current voltage value is greater than the second preset voltage, it indicates that the battery power is sufficient. At this time, all subsystems of the engineering equipment can be preheated, that is, the hydraulic oil, fuel oil, engine oil, battery, and coolant are preheated simultaneously. After the preheating process is completed, the intake air preheating of the engine is performed to start the engine faster.

[0060] In this way, the embodiment of the present application executes different preheating schemes according to different battery powers, and executes a better strategy on the premise of ensuring battery power safety, thereby improving the low-temperature adaptability of the product and ensuring the safe start of the engine in a low-temperature environment.

[0061] In the embodiment of the present application, preheating multiple target objects to be heated among multiple objects to be heated may include: for any target object to be heated, obtaining the current temperature and the set temperature of the target object to be heated; when the current temperature is less than the set temperature, determining the target preheating duration of the target object to be heated according to the current temperature and the set temperature; when the target preheating duration is greater than or equal to the preset system preheating duration, performing a preheating operation on the target object to be heated until the actual preheating duration reaches the preset system preheating duration; when the target preheating duration is less than the preset system preheating duration, after waiting for an interval duration, performing a preheating operation on the target object to be heated until the actual preheating duration reaches the target preheating duration, where the interval duration is the difference between the preset system preheating duration and the target preheating duration.

[0062] In the embodiment of the present application, the method may further include: when the current temperature is greater than or equal to the set temperature, not performing a preheating operation on the target object to be heated.

[0063] Specifically, when preheating hydraulic oil, fuel oil, and engine oil, the same strategy is adopted, which is to determine the specific preheating time and strategy of the object to be heated based on the current temperature, set temperature, and preset system preheating duration of the object to be heated. Among them, the set temperature refers to the lowest operating temperature of the object to be heated, and the preset system preheating duration refers to the maximum preheating preparation duration preset for the system. The preset system preheating duration can be set by the user. Preferably, the system can determine the limit value of the system preset duration based on the configuration of the equipment to limit the preset, and the system preheating duration is less than or equal to this limit value, and a reference value is recommended, for example, recommended according to the battery capacity. Among them, the system preset duration limit value tmax is the time obtained by multiplying the capacity C of the battery after low-temperature attenuation when the ambient temperature reaches the lowest operating temperature of the product by the safety factor k, then subtracting the power consumption C1 required for engine intake preheating and the power consumption C2 required for three starts at the lowest operating temperature, and then dividing the remaining power by the power P during full heating. Specifically, the calculation formula for the system preset duration limit value tmax is as follows:

[0064] tmax = (k * C - C1 - C2) / P; (1)

[0065] Among them, the power consumption C2 required for three starts at the lowest operating temperature can be measured by conducting multiple start tests in a low-temperature test chamber; the power consumption C1 required for intake preheating can be determined after the engine model is selected; the value of the safety factor k can be between 0 and 1 and is determined according to actual needs.

[0066] In one example, the target heating duration of the hydraulic oil satisfies formula (2):

[0067] t1 = Qy / Py = (△Ty * cy * my) / Py = (Ty1 - Ty) * cy * my / Py; (2)

[0068] Among them, t1 is the target heating duration of the hydraulic oil; △Ty is the temperature change of the hydraulic oil; cy is the specific heat capacity of the hydraulic oil, which is determined by the characteristics of the oil product after the user selects the hydraulic oil; my is the mass of the hydraulic oil, which is determined according to the total amount of hydraulic oil added to the hydraulic oil tank; Ty1 is the lower limit value of the target temperature range of the hydraulic oil. After the user selects the hydraulic oil, the best operating temperature range, that is, the preset operating temperature range (Ty1, Ty2), can be determined by the oil product label; Ty is the current temperature of the hydraulic oil, which is monitored in real time by a hydraulic oil temperature sensor; Py is the heating power of the hydraulic oil. The heating power should be avoided from being too large to cause local overheating, boiling, and deterioration of the heating object, and can be reselected according to the different hydraulic oil labels and the total oil volume.

[0069] In one example, the target preheating duration of the fuel oil satisfies formula (3):

[0070] T2 = Qr / Pr = (△Tr * cr * mr) / Pr = (Tr1 - Tr) * cr * mr / Pr; (3)

[0071] Wherein, t2 is the target preheating duration of the fuel; △Tr is the fuel temperature change, △Tr = Tr1 - Tr; cr is the specific heat capacity of the fuel, which is determined by the characteristics of the fuel itself after the user selects the fuel; mr is the fuel mass, which is determined according to the fuel quantity that can be stored in the fuel filter; Tr1 is the lower limit value of the target temperature range of the fuel. After the user selects the hydraulic oil, the optimal operating temperature range, that is, the preset operating temperature range (Tr1, Tr2), can be determined by the oil grade; Tr is the current fuel temperature, which is monitored in real time by the fuel oil temperature sensor and uploaded to the controller through the ECU; Pr is the fuel heating power. The heating power should be avoided from being too large to cause local overheating, boiling and deterioration of the heating object, and can be reselected according to the different fuel grades and the total oil quantity.

[0072] In one example, the target preheating duration of the engine oil satisfies formula (4):

[0073] t3 = Qr / Pj = (△Tj * cj * mj) / Pj = (Tj1 - Tj) * cj * mj / Pj; (4)

[0074] Wherein, t3 is the target preheating duration of the engine oil; △Tj is the engine oil temperature change △Tj = Tj1 - Tj; cj is the specific heat capacity of the engine oil, which is determined by the characteristics of the oil itself after the user selects the engine oil; mj is the engine oil mass, which is determined according to the engine oil storage quantity in the engine oil filter; Tj1 is the lower limit value of the target temperature range of the engine oil. After the user selects the engine oil, the optimal operating temperature range, that is, the preset operating temperature range (Tj1, Tj2), can be determined by the characteristics of the oil itself; Tj is the current engine oil temperature, which is monitored in real time by the engine oil temperature sensor and uploaded to the controller through the ECU; Pj is the engine oil heating power. The heating power should be avoided from being too large to cause local overheating, boiling and deterioration of the heating object, and can be reselected according to the different engine oil grades and the total oil quantity.

[0075] Figure 4 A preheating control flow chart provided for a specific embodiment of the present application. As shown in Figure 4As shown, when starting to execute the preheating strategy, time t starts counting. t is the time axis for the execution of the heating logic and is the basis for the start time of each heating action. When t starts counting, the system reads the preset system preheating duration ts, and then determines whether the current hydraulic oil temperature Ty, fuel temperature Tr, and engine oil temperature Tj are lower than the respective preset temperatures Ty1, Tr1, and Tj1. If not, it directly skips the corresponding preheating link and enters the waiting for engine intake preheating. If lower, the system will respectively calculate the target preheating duration t1 of the hydraulic oil, the target preheating duration t2 of the fuel, and the target preheating duration t3 of the engine oil, and compare them with the preset system preheating duration ts respectively. If the calculated target preheating duration of a certain subsystem is greater than the preset system preheating duration ts, this subsystem will not be directly turned on for preheating until the preheating duration reaches the preset system preheating duration ts; if the target preheating duration of the subsystem is less than the preset system preheating duration ts, this subsystem will only start preheating when the timer t = ts - tn and continue until t = ts, that is, this subsystem starts preheating after waiting for a certain time interval, and the preheating duration is its corresponding target preheating duration.

[0076] In one example, regarding the working modes of the heating subsystems corresponding to the hydraulic oil, fuel, and engine oil, first, the hydraulic oil heating system turns on the heating motor in the first gear state to heat the cooling system and circulates through the hydraulic oil heating valve. At this time, since the cooling system heating valve is in the closed state, the heat is released to the hydraulic oil in the form of heat exchange through the heating rod installed in the hydraulic oil tank; for the heating of the fuel and engine oil, both are heated by the heating structure installed outside the engine fuel and engine oil filters to generate heat after being energized, which then heats the filter tank body and indirectly heats the internal oil products.

[0077] In the embodiment of the present application, when the current voltage value is greater than the second preset voltage, it is determined that the current power state of the battery is a fully charged state, and preheating treatments are respectively performed on multiple objects to be heated, that is, preheating treatments are respectively performed on the battery, hydraulic oil, fuel, engine oil, and coolant. Figure 5 A preheating control flowchart provided for another specific embodiment of the present application. As Figure 5 As described, when the battery is fully charged, the preheating control logics of the fuel and engine oil remain unchanged. For the preheating treatment of the battery, when the current temperature inside the battery case is less than the corresponding preset minimum temperature inside the case, the battery starts heating, otherwise it does not start, until the actual heating duration reaches the preset system heating duration. For the hydraulic oil and coolant, when the current oil temperatures of the hydraulic oil and coolant are both lower than the corresponding set temperatures, that is, the minimum operating temperatures, the liquid heater turns on the second gear, and at the same time, the hydraulic oil heating switch valve and the cooling system heating switch valve are both opened, the self - circulation valve is closed, and the heat exchange power reaches the maximum. In addition, the preheating control logics of the hydraulic oil and coolant are the same as the control logics when the battery power is relatively sufficient.

[0078] In one example, the target preheating duration of the coolant satisfies formula (5):

[0079] T5 = Ql / Pl = (△TL*cL*mL) / PL = (TL1 - TL)*cL*ml / PL; (5)

[0080] Where, t5 is the target preheating duration of the coolant; △TL is the coolant temperature change amount △TL = TL1 - TL; cL is the specific heat capacity of the coolant, which is determined by the characteristics of the selected hydraulic oil; mL is the mass of the coolant, which is determined according to the total amount of hydraulic oil added in the hydraulic oil tank; TL1 is the lower limit value of the target temperature range of the coolant. After the user selects the coolant, the optimal working temperature range, that is, the preset working temperature range (TL1, TL2), can be determined by the characteristics of the coolant itself; TL is the current temperature of the coolant, which is monitored in real time through a coolant temperature sensor; PL is the heating power of the coolant. The heating power should be avoided from being too large to cause local overheating, boiling and deterioration of the heating object, and can be reselected according to the different coolant labels and the total amount.

[0081] In this way, considering the importance of the battery power, the battery power is divided into three intervals, and different heating strategies are executed according to the power in different intervals. At the same time, the heating strategy also combines the different importance of each medium in the system. For example, when the power is low, heating the hydraulic oil, fuel and engine oil first brings greater gain than heating the battery.

[0082] In the embodiment of the present application, the method may further include: after the engine is started, obtaining the engine speed; in the case where the engine speed is greater than a preset idle speed value, performing temperature cycle control on a plurality of objects to be heated, so that the temperatures of the plurality of objects to be heated are respectively in corresponding preset working temperature ranges.

[0083] Specifically, the preset idle speed value is the idle speed value corresponding to the engine, and the preset speed is a threshold for determining whether the engine has been started, usually 0. When the initial speed of the engine of the engineering equipment is greater than the preset speed, it means that the engine has been successfully started. However, considering that after the engineering equipment is started in a low-temperature environment, each system still has temperature control requirements to ensure the normal operation of the equipment. Therefore, after detecting that the equipment has been started, it can be first determined whether the initial speed is greater than the preset idle speed value. In the case where it is greater than the preset idle speed value, the equipment operates normally. At this time, temperature cycle control can be performed on a plurality of heating objects in a plurality of engineering equipment, so that the temperatures of the plurality of objects to be heated are respectively in their respective corresponding preset working temperature ranges. The plurality of objects to be heated are the working media that need to be heated in the engineering equipment, including the battery, hydraulic oil, coolant, fuel and engine oil. The preset working ranges corresponding to each object to be heated are set in advance according to their own properties and the characteristics of the engineering equipment.Figure 6 This is a logic diagram for temperature cycle control of an engineering device provided by an embodiment of the present application. As Figure 6 shown, heating is automatically turned on or off within the preset operating temperature range corresponding to each working medium, so that the temperature of the object to be heated is respectively within the corresponding preset operating temperature range. In this way, it can be ensured that the device can still operate normally in a low-temperature environment.

[0084] In an embodiment of the present application, the method may further include: when the initial speed is greater than the preset speed, determining whether the initial speed is greater than the preset idle speed value; when the initial speed is greater than the preset idle speed value, performing temperature cycle control on multiple objects to be heated, so that the temperatures of the multiple objects to be heated are respectively within the corresponding preset operating temperature ranges.

[0085] It can be understood that when the initial speed is greater than the preset speed, it indicates that the engine has started. Considering that after the engineering device starts in a low-temperature environment, each system still has requirements for temperature control to ensure the normal operation of the device. Specifically, this control method is the same as the control method in the above embodiment, as Figure 6 shown. In this way, it can be ensured that the device can still operate normally in a low-temperature environment.

[0086] In an embodiment of the present application, the method further includes: after the generator of the engineering device enters the power generation state, obtaining the current speed of the engine and the heating voltage of the engineering device; matching the power generation curve of the generator according to the current speed to obtain the current power generation; determining the target power generation time according to the current power generation, the preset minimum heating power, the preset minimum heating time, the heating voltage, the preset intake preheating power consumption, the engine start-up power consumption and the current power generation; controlling the engine to operate for the target power generation time to complete the charging of the generator.

[0087] It can be understood that since each preheating and start-up of the engineering device requires a large amount of power, and the power can only be obtained through the generator when there is no external power supply, and the engine needs to run at a certain speed or above for a sufficient time to ensure sufficient charging. To prevent insufficient charging due to insufficient running time, the present application embodiment designs a charging time recommendation logic, that is, after the generator enters the power generation state, the power generation curve of the generator will be matched according to the current speed to obtain the current power generation I, and then the target charging time tc required will be calculated according to the power consumption of the system under the lowest adapted ambient temperature. The target charging time and power generation are displayed on the display and updated in real time according to the speed. The calculation process of the target charging time is shown in formula (6):

[0088] tc = ((Σ(Px * Txn) / V) + Ci + Cj) / I; (6)

[0089] Among them, tc is the target charging time, which is calculated based on the current power generation; Px is the preset minimum heating power, taking the heating power of each subsystem at the designed lowest operating ambient temperature; Txn is the preset minimum heating time, taking the heating time of each subsystem at the designed lowest operating ambient temperature; V is the heating voltage of the engineering equipment, that is, the voltage when the engineering equipment is heating, which is read in real time; Ci intake is the preset power consumption for intake preheating, taking the product of the intake preheating time and power consumption divided by the voltage at the lowest ambient temperature; Cj is the power consumption for engine starting, taking the average power consumption measured in 10 start-up tests at the designed lowest operating ambient temperature and before heating; I is the current power generation, and I is a variable that changes with the rotational speed in the formula. After the generator is selected, it is determined by the power generation curve.

[0090] It should be noted that no matter which link of the logic execution, once the voltage of the battery of the engineering equipment is lower than the safety voltage, all actions must stop, that is, this condition is a global condition to ensure the safety of the engineering equipment operation.

[0091] The embodiment of the present application also provides a processor configured to execute the method for starting an engineering equipment in the above implementation manner.

[0092] The embodiment of the present application also provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to make the machine execute the method for starting an engineering equipment in the above implementation manner.

[0093] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. 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 disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0095] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction means that implements the function specified in one or more of the processes and / or blocks Figure 1 of one or more of the processes and / or blocks Figure 1 specified in the flowchart.

[0096] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing steps for implementing the function specified in one or more of the processes and / or blocks Figure 1 of one or more of the processes and / or blocks Figure 1 specified in the flowchart.

[0097] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and memory.

[0098] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash memory. Memory is an example of computer-readable media.

[0099] Computer-readable media includes both permanent and non-permanent, removable and non-removable media implemented by any method or technology for storing 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 technologies, compact disc read-only memory (CD-ROM), digital versatile discs (DVD) or other optical storage, magnetic cassettes, magnetic tape 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.

[0100] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising the element.

[0101] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for starting engineering equipment, characterized in that: The method comprises: When the environment in which the engineering equipment is located at the beginning of operation is a low temperature environment, entering a low temperature working mode, and obtaining an initial speed of the engine of the engineering equipment; When the initial rotation speed is equal to the preset rotation speed, obtaining the current voltage value of the battery of the engineering equipment; In the case where the current voltage value is greater than the preset minimum voltage value, the current state of charge of the battery is determined according to the current voltage value, and a preheating strategy corresponding to the current state of charge is executed on multiple objects to be heated in the engineering equipment, wherein the multiple objects to be heated include batteries, hydraulic oil, coolant, fuel oil and engine oil; After executing the preheating strategy, performing an intake air preheating operation on the engine; After the intake air preheating operation is completed, the engine of the engineering equipment is started.

2. The method according to claim 1, characterized in that The determining the current state of charge of the battery according to the current voltage value, and executing a preheating strategy corresponding to the current state of charge on a plurality of objects to be heated in the engineering equipment, includes: When the current voltage value is less than or equal to the first preset voltage, it is determined that the current power state of the battery is a low power state, and the preheating strategy corresponding to the low power state is not to preheat the objects to be heated; When the current voltage value is greater than the first preset voltage and less than the second preset voltage, it is determined that the current power state of the battery is a high power state, and the preheating strategy corresponding to the high power state is to preheat multiple target objects to be heated among the multiple objects to be heated, and the multiple target objects to be heated include hydraulic oil, fuel oil and engine oil; When the current voltage value is greater than the second preset voltage, it is determined that the current power state of the battery is a sufficient power state, and the preheating strategy corresponding to the sufficient power state is to preheat the multiple objects to be heated respectively.

3. The method according to claim 2, characterized in that The preheating of a plurality of target objects to be heated among the plurality of objects to be heated comprises: For any target object to be heated, obtaining the current temperature and the set temperature of the target object to be heated; When the current temperature is lower than the set temperature, determining a target preheating time of the target object to be heated according to the current temperature and the set temperature; When the target preheating time is greater than or equal to the preset system preheating time, performing a preheating operation on the target object to be heated until the actual preheating time reaches the preset system preheating time; When the target preheating time is less than the preset system preheating time, after waiting for an interval time, a preheating operation is performed on the target object to be heated until the actual preheating time reaches the target preheating time, wherein the interval time is the difference between the preset system preheating time and the target preheating time.

4. The method according to claim 3, characterized in that: The method further comprises: In a case where the current temperature is greater than or equal to the set temperature, no preheating operation is performed on the target object to be heated.

5. The method according to claim 1, characterized in that The method further comprises: After the engine is started, obtaining the engine speed; When the engine speed is greater than a preset idle value, temperature cycle control is performed on the multiple objects to be heated so that the temperatures of the multiple objects to be heated are respectively within corresponding preset operating temperature ranges.

6. The method according to claim 1, characterized in that The performing of an intake air preheating operation on the engine comprises: Obtaining the current ambient temperature of the environment in which the engineering equipment is located; determining the intake air preheating time according to the current ambient temperature; An intake air preheating operation is performed on the engine based on the intake air preheating time.

7. The method according to claim 1, characterized in that The method further comprises: In the case where the initial speed is greater than a preset speed, determining whether the initial speed is greater than a preset idle speed value; When the initial rotation speed is greater than the preset idle speed value, temperature cycle control is performed on the multiple objects to be heated so that the temperatures of the multiple objects to be heated are respectively within the corresponding preset operating temperature ranges.

8. The method according to claim 1, characterized in that: The method further comprises: When the current voltage value is less than the preset minimum voltage value, it is determined that the battery is currently in a low-power state, the engine is stopped and started, and a low-power prompt is output.

9. The method according to claim 1, characterized in that: The method further comprises: After the generator of the engineering equipment enters a power generation state, obtaining the current speed of the engine and the heating voltage of the engineering equipment; Matching the power generation curve of the generator according to the current rotation speed to obtain the current power generation; Determining a target power generation time according to the current power generation, the preset minimum heating power, the preset minimum heating time, the heating voltage, the preset intake preheating power consumption, the engine starting power consumption and the current power generation; The engine is controlled to operate for the target power generation time to complete charging of the generator.

10. A processor, characterized in that: The method is configured to execute the method for starting engineering equipment according to any one of claims 1 to 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 method for starting engineering equipment according to any one of claims 1 to 9.

Images