Fuel oil heating system, method and equipment of harvesting machine and medium

Abstract

The invention relates to a fuel oil heating system, method, equipment and medium for harvesting machinery, and relates to the technical field of fuel oil temperature regulation, the system comprises a main oil tank, a flow regulating valve and an engine coolant circulating device which are sequentially connected to form a circulating loop, the interior of the main oil tank is divided into a water bath layer and a fuel oil layer, and an oil temperature sensor and the like are arranged; the power-on time of the harvesting machine, the oil temperature information of the main oil tank and the water temperature information of the engine are obtained through the controller, the environment temperature of the engine and the target oil temperature information of the main oil tank are determined, and whether an oil supply tank of the engine is the main oil tank or not is judged; and if not, determining and adjusting the opening of the flow adjusting valve. The technical effects that the fuel oil temperature of the main oil tank is accurately controlled according to different environmental conditions, and normal oil supply of the harvesting machine in the low-temperature environment is guaranteed are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel temperature regulation, and in particular to a fuel heating system, method, equipment and medium for a harvesting machine. Background Art

[0002] During harvester operation, a proper fuel supply and temperature are crucial to engine performance. If the fuel temperature is too low, its fluidity will deteriorate, affecting proper engine combustion, which in turn reduces engine power and efficiency, increasing fuel consumption and exhaust emissions.

[0003] At present, in order to solve the problem of poor fluidity of fuel at low temperatures, copper pipes and insulation layers are usually arranged outside the main fuel tank body, and the fuel tank is heated by circulating hot water in the copper pipes.

[0004] However, the method of arranging copper pipes and insulation layers outside the main fuel tank body has a high layout cost of the copper pipes, and the thermal contact area between the copper pipes and the fuel tank is relatively small, resulting in low heat transfer efficiency and failure to heat the fuel quickly and effectively. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fuel heating system, method, equipment and medium for harvesting machinery, aiming to solve at least one of the above technical problems.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] In a first aspect, the present application provides a fuel heating system for a harvesting machine, which adopts the following technical solutions:

[0008] A fuel heating system for a harvesting machine includes a main fuel tank, a flow regulating valve, and an engine coolant circulation device sequentially connected to form a circulation loop. A separation layer is provided inside the main fuel tank to form a water bath layer and a fuel layer inside the main fuel tank. The water bath layer is connected to a water inlet and a water outlet. The water outlet is arranged below the water inlet, and the height difference between the water inlet and the water outlet is greater than the minimum liquid level of the water bath layer. An oil temperature sensor is provided in the fuel layer, and an engine water temperature sensor is provided in the engine coolant circulation device. The oil temperature sensor, the engine water temperature sensor, and the flow regulating valve are all electrically connected to a controller.

[0009] The controller is used to obtain the power-on time of the harvesting machine, the current oil temperature information of the main oil tank and the current water temperature information of the engine;

[0010] Determining the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine;

[0011] determining target oil temperature information of the main oil tank based on the ambient temperature of the engine;

[0012] Determining whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank;

[0013] If the fuel supply tank of the harvesting machinery's engine is the main tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information and the target oil temperature information, and the opening of the flow regulating valve is adjusted based on the valve opening information.

[0014] The beneficial effects of the present invention are: the main fuel tank, the flow regulating valve and the engine coolant circulation device are connected into a circulation loop, and a water bath layer and a fuel layer are formed inside the main fuel tank, and the engine coolant is used to heat the fuel in a water bath, which has low cost, large thermal contact area and high heating efficiency; relevant information is collected by the oil temperature sensor and the engine water temperature sensor, and the controller can calculate the ambient temperature and set the target oil temperature according to the power-on time of the harvesting machinery, the current oil temperature information of the main fuel tank and the current water temperature information of the engine to ensure that the fuel can be smoothly supplied to the engine; and then the opening of the flow regulating valve is adjusted based on the current oil temperature information and the target oil temperature information, and the water bath temperature is adjusted to maintain the stability of the oil outlet temperature.

[0015] On the basis of the above technical solution, the present invention can also be improved as follows.

[0016] Furthermore, it also includes an auxiliary fuel tank and a fuel switching valve, the fuel switching valve is connected to the engine through the engine fuel supply pipe, the auxiliary fuel tank is connected to the fuel switching valve through the auxiliary fuel tank fuel supply pipe, and the main fuel tank is connected to the fuel switching valve through the main fuel tank fuel supply pipe, and the diesel stored in the auxiliary fuel tank has a lower freezing point than the diesel in the main fuel tank.

[0017] The beneficial effects of adopting the above-mentioned further scheme are: the auxiliary fuel tank stores diesel with a lower freezing point, and the main and auxiliary fuel tanks are switched in conjunction with the fuel switching valve. The low-freezing-point diesel in the auxiliary fuel tank can be used first in a low-temperature environment to avoid condensation in the oil circuit. After the oil temperature in the main fuel tank rises, the fuel supply is switched to the main fuel tank, thereby reducing the vehicle's fuel cost. When the engine is turned off, the diesel in the main fuel tank in the oil pipe can be drained to avoid diesel condensation and blockage of the oil circuit due to the decrease in ambient temperature.

[0018] Furthermore, the controller is configured to determine the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine, specifically for:

[0019] When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the flameout time of the previous power-on cycle of the current power-on cycle is not less than a first set time threshold, determining whether the current oil temperature information is less than the current water temperature information;

[0020] If the current oil temperature information is lower than the current water temperature information, determining the ambient temperature of the engine as the current oil temperature information;

[0021] If the current oil temperature information is not less than the current water temperature information, determining that the ambient temperature of the engine is the current water temperature information;

[0022] When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the power-off time of the previous power-on cycle of the current power-on cycle is not less than the first set time threshold, the ambient temperature is determined to be the historical ambient temperature of the previous power-on cycle of the current power-on cycle.

[0023] The beneficial effect of adopting the above-mentioned further scheme is: determining the ambient temperature of the engine based on the time interval between the power-on time and the last shutdown time of the harvesting machinery, the current oil temperature information of the main fuel tank, and the current water temperature information of the engine, more accurately reflecting the actual ambient temperature, and providing an accurate basis for the subsequent determination of the target oil temperature information of the main fuel tank, so as to better control the opening of the flow regulating valve and achieve reasonable heating of the fuel.

[0024] Furthermore, the controller is used to determine whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank, specifically for:

[0025] Determine, based on the power-on signal of the harvesting machinery, the current oil temperature information, and the current water temperature information, a water bath temperature control enable of the harvesting machinery, wherein the water bath temperature control enable is 0 or 1, wherein the water bath temperature control enable is 0 and represents a control state in which the heating of the main oil tank is turned off, and the water bath temperature control enable is 1 and represents a control state in which the heating of the main oil tank is turned on;

[0026] If the water bath temperature control enable of the harvesting machine is 0 and the power-on time is greater than the second set time threshold, or if the water bath temperature control enable of the harvesting machine is 1 and the difference between the current oil temperature information and the target oil temperature information is not greater than the first set temperature threshold, it is determined that the fuel supply tank of the engine of the harvesting machine is the main fuel tank, and the first set time threshold is greater than the second set time threshold;

[0027] If the water bath temperature control enable of the harvesting machinery is 0 and the power-on time is not greater than the second set time threshold, or if the harvesting machinery is turned off and the water bath temperature control enable of the harvesting machinery is 1, it is determined that the fuel supply tank of the engine of the harvesting machinery is a subsidiary tank.

[0028] The beneficial effects of adopting the above-mentioned further scheme are: determining the water bath temperature control enable according to the power-on signal of the harvesting machinery, the current oil temperature information and the current water temperature information, thereby clarifying the control status of heating the main fuel tank; realizing automatic switching of the main and auxiliary fuel tanks according to the water bath temperature control enable status, the power-on time and the difference between the current oil temperature and the target oil temperature, ensuring the use of the auxiliary fuel tank in the initial stage of vehicle startup to avoid the influence of low temperature, switching to the main fuel tank in time when the oil temperature of the main fuel tank is appropriate to reduce costs, and switching the auxiliary fuel tank according to the situation when the engine is turned off to avoid fuel condensation and clogging the oil pipe. On the premise of reducing the fuel cost of the vehicle, the functional usability is improved so that the fuel can be smoothly supplied to the engine.

[0029] Furthermore, the controller is used to determine, based on the power-on signal of the harvesting machine, the current oil temperature information, and the current water temperature information, that the water bath temperature control of the harvesting machine is enabled, specifically to:

[0030] Based on a power-on signal of the harvesting machine, determining that an initial water bath temperature control enable of the harvesting machine is 0;

[0031] If the initial water bath temperature control enable of the harvesting machine at the current moment is 0 and the current oil temperature information is not greater than the second set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machine at the current moment is 1, and the initial water bath temperature control enable at the current moment is the water bath temperature control enable at the previous moment;

[0032] If the initial water bath temperature control enable of the harvesting machinery at the current moment is 0 and the current water temperature information is greater than the third set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machinery at the current moment is 1, wherein the third set temperature threshold is greater than the second set temperature threshold, and the second set temperature threshold is greater than the first set temperature threshold.

[0033] The beneficial effect of adopting the above further scheme is: the water bath temperature control enable is determined by the power-on signal of the harvesting machinery, the current oil temperature information and the current water temperature information. The default initial water bath temperature control enable is 0, and it is set to 1 when the corresponding oil temperature or water temperature conditions are met, so as to accurately judge when to turn on or off the control state of the heated main fuel tank, ensure that the fuel heating function is started under appropriate conditions, maintain the stability of the oil outlet temperature, ensure that the fuel can be smoothly supplied to the engine, reduce the vehicle fuel cost, and improve the usability of the function.

[0034] Furthermore, the controller is used for determining the valve opening information of the flow control valve based on the current oil temperature information and the target oil temperature information if the fuel supply tank of the engine of the harvesting machine is the main fuel tank, specifically for:

[0035] If the fuel supply tank of the engine of the harvesting machinery is the main fuel tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information, the set target oil temperature information and the preset PID algorithm.

[0036] The beneficial effect of adopting the above further solution is that it can determine the valve opening information of the flow control valve based on the current oil temperature information and the target oil temperature information using a preset PID algorithm, thereby adjusting the water bath heating power, which can quickly heat the fuel and maintain a stable oil temperature, ensuring that the fuel can be smoothly supplied to the engine.

[0037] Furthermore, the oil temperature sensor is arranged in the main oil tank on one side close to the oil outlet of the main oil tank.

[0038] The beneficial effect of adopting the above-mentioned further scheme is that the oil temperature sensor is set in the main fuel tank near the oil outlet, which can more accurately measure the temperature of the fuel about to flow out of the main fuel tank, so that the system can determine the ambient temperature, target oil temperature and adjust the flow control valve opening based on this temperature information more accurately, ensuring that the fuel can be smoothly supplied to the engine, and is also conducive to maintaining the stability of the oil outlet temperature.

[0039] In a second aspect, the present application provides a fuel heating method for a harvesting machine, which adopts the following technical solution:

[0040] A fuel heating method for a harvesting machine, comprising:

[0041] Obtain the power-on time of the harvesting machinery, the current oil temperature of the main fuel tank, and the current water temperature of the engine;

[0042] Determining the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine;

[0043] determining target oil temperature information of the main oil tank based on the ambient temperature of the engine;

[0044] Determining whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank;

[0045] If the fuel supply tank of the harvesting machinery's engine is the main tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information and the set target oil temperature information, and the opening of the flow regulating valve is adjusted based on the valve opening information.

[0046] In a third aspect, the present application provides an electronic device, which adopts the following technical solution:

[0047] An electronic device comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the fuel heating method for a harvesting machine described in the second aspect.

[0048] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0049] A computer-readable storage medium stores a computer program that can be loaded by a processor and executed by the harvester fuel heating method described in the second aspect.

[0050] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic structural diagram of a fuel heating system for a harvesting machine provided by one embodiment of the present invention;

[0052] Figure 2 A schematic flow chart of a fuel heating method for a harvesting machine provided in one embodiment of the present invention;

[0053] Figure 3 The present invention provides a schematic structural diagram of an electronic device according to an embodiment of the present invention.

[0054] Figure numerals: 1. Main fuel tank; 11. Fuel layer; 12. Water bath layer; 13. Oil temperature sensor; 2. Flow regulating valve; 3. Engine coolant circulation device; 31. Engine cooling circulation pipeline; 32. Engine coolant storage tank; 4. Auxiliary fuel tank; 5. Fuel switching valve; 6. Engine; 7. Main fuel tank oil supply pipe; 8. Auxiliary fuel tank oil supply pipe; 9. Engine oil supply pipe. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates an "or" relationship between the related objects.

[0057] like Figure 1As shown, an embodiment of the present application provides a fuel heating system for a harvesting machinery, which includes a main fuel tank 1, a flow regulating valve 2 and an engine coolant circulation device 3 which are sequentially connected to form a circulation loop, and a partition layer is provided inside the main fuel tank 1 to form a water bath layer 12 and a fuel layer 11 inside the main fuel tank 1, and the two are separated by the partition layer.

[0058] The engine 6 coolant circulates in the water bath layer 12 to transfer heat to the fuel in the fuel layer 11. Because the circulating coolant can continuously bring heat, and the separation layer increases the thermal contact area, the effect of utilizing the heat of the engine 6 coolant to efficiently heat the fuel is achieved.

[0059] Specifically, the main fuel tank 1 is also provided with a water inlet, a water outlet, and an oil temperature sensor 13. The separator layer can be made of a metal material with good thermal conductivity, such as copper or aluminum. The water bath layer 12 is connected to the water inlet and the water outlet. The water outlet is located below the water inlet, and the height difference between the water inlet and the water outlet is greater than the minimum liquid level of the water bath layer 12. This facilitates the circulation of the coolant by gravity and ensures smooth water circulation. The oil temperature sensor 13 is disposed within the fuel layer 11. The oil temperature sensor 13 is used to monitor the temperature of the fuel in real time. The oil temperature sensor 13 can be a thermocouple oil temperature sensor 13, which generates a corresponding electrical signal by sensing changes in the fuel temperature. The oil temperature sensor 13 should be installed on the side of the fuel layer 11 near the oil outlet of the main fuel tank 1 to more accurately reflect the temperature of the fuel about to flow out of the main fuel tank 1.

[0060] The engine coolant circulation device 3 includes an engine cooling circulation pipeline 31 and an engine coolant storage tank 32. An engine water temperature sensor is provided in the engine coolant circulation device 3. The engine water temperature sensor is used to measure the temperature of the engine 6 coolant.

[0061] The flow regulating valve 2 is installed on the circulation pipeline connecting the main oil tank 1 and the engine coolant circulation device 3. The oil temperature sensor 13, the engine water temperature sensor and the flow regulating valve 2 are all electrically connected to the controller.

[0062] The controller is used to obtain the power-on time of the harvesting machinery, the current oil temperature information of the main fuel tank 1 and the current water temperature information of the engine 6; determine the ambient temperature of the engine 6 based on the power-on time of the harvesting machinery, the current oil temperature information of the main fuel tank 1 and the current water temperature information of the engine 6; determine the target oil temperature information of the main fuel tank 1 based on the ambient temperature of the engine 6; judge whether the fuel supply tank of the engine 6 of the harvesting machinery is the main fuel tank 1; if the fuel supply tank of the engine 6 of the harvesting machinery is the main fuel tank 1, determine the valve opening information of the flow regulating valve 2 based on the current oil temperature information and the target oil temperature information, and adjust the opening of the flow regulating valve 2 based on the valve opening information.

[0063] The fuel heating system of the harvesting machinery utilizes the main fuel tank 1, the flow regulating valve 2 and the engine coolant circulation device 3 to connect into a circulation loop, and a water bath layer 12 and a fuel layer 11 are formed inside the main fuel tank 1, and the fuel is heated in a water bath using the coolant of the engine 6, which has low cost, large thermal contact area and high heating efficiency; relevant information is collected through the oil temperature sensor 13 and the engine water temperature sensor, and the controller can calculate the ambient temperature and set the target oil temperature according to the power-on time of the harvesting machinery, the current oil temperature information of the main fuel tank 1 and the current water temperature information of the engine 6 to ensure that the fuel can be smoothly supplied to the engine 6; and then adjust the opening of the flow regulating valve 2 based on the current oil temperature information and the target oil temperature information, adjust the water bath temperature, and maintain the stability of the oil outlet temperature.

[0064] Optionally, the fuel heating system of the harvesting machinery also includes an auxiliary fuel tank 4 and a fuel switching valve 5. The fuel switching valve 5 is connected to the engine 6 through the engine fuel supply pipe 9, the auxiliary fuel tank 4 is connected to the fuel switching valve 5 through the auxiliary fuel tank fuel supply pipe 8, and the main fuel tank 1 is connected to the fuel switching valve 5 through the main fuel tank fuel supply pipe 7. The freezing point of the diesel stored in the auxiliary fuel tank 4 is lower than the freezing point of the diesel in the main fuel tank 1.

[0065] In the embodiment of the present application, the fuel layer 11 of the main fuel tank 1 is filled with No. 0 diesel, and low-grade diesel with a lower freezing point is added to the auxiliary fuel tank 4 according to the actual use environment.

[0066] The auxiliary fuel tank 4 is used to store low-freezing-point diesel, which can ensure the normal start-up and operation of the engine 6 in a low-temperature environment. The auxiliary fuel tank 4 can adopt a tank structure similar to that of the main fuel tank 1, but the volume may be smaller. The material of the auxiliary fuel tank 4 can be plastic or metal. Plastic is light in weight and low in cost, while metal is strong and durable. The fuel switching valve 5 is used to switch the fuel supply source of the engine 6. The fuel switching valve 5 can be an electromagnetic switching valve, which controls the opening and closing of the valve by electromagnetic force to achieve the switching of the main and auxiliary fuel tanks 4. The fuel switching valve 5 is installed at the intersection of the engine fuel supply pipe 9, the auxiliary fuel tank fuel supply pipe 8 and the main fuel tank fuel supply pipe 7, and selects the fuel supply tank by controlling the opening and closing of different pipelines.

[0067] Optionally, the controller is configured to determine the ambient temperature of the engine 6 based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank 1, and the current water temperature information of the engine 6, specifically for:

[0068] When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the flameout time of the previous power-on cycle of the current power-on cycle is not less than a first set time threshold, determining whether the current oil temperature information is less than the current water temperature information;

[0069] If the current oil temperature information is lower than the current water temperature information, the ambient temperature of the engine 6 is determined to be the current oil temperature information;

[0070] If the current oil temperature information is not less than the current water temperature information, then the ambient temperature of the engine 6 is determined to be the current water temperature information;

[0071] When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the power-off time of the previous power-on cycle of the current power-on cycle is not less than the first set time threshold, the ambient temperature is determined to be the historical ambient temperature of the previous power-on cycle of the current power-on cycle.

[0072] In this embodiment of the present application, if the time interval between the power-on time of the current power-on cycle and the flameout time of the previous power-on cycle exceeds 1 hour, the smaller value of the current oil temperature information sent by the fuel temperature sensor and the current water temperature information sent by the engine water temperature sensor is recorded as the current ambient temperature and stored in the controller storage medium. If the flameout time is less than 1 hour, the ambient temperature value within the ambient temperature range is used as the current ambient temperature.

[0073] The controller determines the ambient temperature of the engine 6 based on the time interval between the power-on time and the last shutdown time of the harvesting machinery, the current oil temperature information of the main fuel tank 1, and the current water temperature information of the engine 6, so as to more accurately reflect the actual ambient temperature and provide an accurate basis for the subsequent determination of the target oil temperature information of the main fuel tank 1, so as to better control the opening of the flow regulating valve 2 and realize reasonable heating of the fuel.

[0074] Optionally, the controller is configured to determine the target oil temperature information of the main oil tank 1 based on the ambient temperature of the engine 6, specifically to:

[0075] Based on the type and flow rate of the diesel in the main tank 1 and the length of the main tank supply pipe 7, the cooling time of the diesel in the main tank 1 in the main tank supply pipe 7 is determined. The cooling time represents the time it takes for the diesel to flow from the main tank 1 to the engine 6.

[0076] Determine the diesel cooling power and the mass of diesel flowing through the main tank supply pipe 7 per second based on the thermal conductivity of the main tank supply pipe 7 material, the diesel heat transfer area, the pipe radius, the diesel heat transfer area pipe thickness, the ambient temperature, and the current oil temperature.

[0077] Determine the total heat dissipation of the main fuel tank 1 based on the diesel cooling power and cooling time;

[0078] Determine the temperature reduction range of the main fuel tank 1 based on the total heat dissipation and the mass of diesel flowing through the main fuel tank supply pipe 7 per second;

[0079] Based on the temperature reduction range of the main oil tank 1 , target oil temperature information of the main oil tank 1 is determined.

[0080] In this embodiment, main fuel tank 1 uses No. 0 diesel. The safe temperature range for No. 0 diesel is 40-60°C, and its peak performance is 4-8°C. Assume the diesel flow rate in the fuel pipe is V_flow (in cm / s), and the length of the fuel pipe is L_vitta (in cm). Then, the cooling time for the diesel in the fuel pipe, Time_cool, equals L_vitta / V_flow.

[0081] The diesel cooling power is Q = kA (Temp_oil_goal - Temp_Env) / d;

[0082] Where k is the thermal conductivity of the tubing material, expressed in W / (m·K). The thermal conductivity of different materials varies and should be set based on actual conditions.

[0083] A: The area of ​​heat conduction, that is, the internal surface area of ​​the pipeline through which the fuel flows per second, in m 2 The larger the heat transfer area, the faster the heat transfer.

[0084] Temp_oil_goal: Fuel temperature, in K.

[0085] Temp_Env: Ambient temperature, in K.

[0086] d: The distance of heat conduction, that is, the thickness of the oil pipeline, in meters.

[0087] Normally, the specific heat capacity of No. 0 diesel is approximately 2.0 kJ / (kg·℃), i.e. 2 J / (g*℃) 1 joule (J) = 1 watt·second (W·s);

[0088] The density of No. 0 diesel is usually 0.83-0.86g / cm 3 In the embodiment of the present application, the density of No. 0 diesel is selected as 0.85. Assuming that the radius of the oil pipe is R_vitta, the unit is cm, then the mass of diesel flowing through the oil pipe per second is M_oil = 3.14*R_vitta*R_vitta*V_flow*0.85, the unit is g;

[0089] The heat dissipation of the main fuel tank 1 is Q*Time_cool, in J. The temperature drop of the main fuel tank 1 is heat dissipation / (M_oil*specific heat capacity), in °C.

[0090] To ensure that the temperature of the oil entering the tank is 8°C, the oil outlet temperature of the tank is the temperature reduction range + 8°C, that is, the target oil outlet temperature Temp_oil_goal = [heat dissipation / (2*M_oil)] + 8, in °C.

[0091] Optionally, the controller is used to determine whether the fuel tank of the engine 6 of the harvesting machine is the main fuel tank 1, specifically for:

[0092] Determine the water bath temperature control enable of the harvester based on the power-on signal of the harvester, the current oil temperature information, and the current water temperature information, wherein the water bath temperature control enable is 0 or 1, wherein the water bath temperature control enable is 0 and represents a control state in which the heating of the main oil tank 1 is turned off, and the water bath temperature control enable is 1 and represents a control state in which the heating of the main oil tank 1 is turned on;

[0093] If the water bath temperature control enable of the harvesting machine is 0 and the power-on time is greater than the second set time threshold, or if the water bath temperature control enable of the harvesting machine is 1 and the difference between the current oil temperature information and the target oil temperature information is not greater than the first set temperature threshold, it is determined that the fuel supply tank of the engine 6 of the harvesting machine is the main fuel tank 1, and the first set time threshold is greater than the second set time threshold;

[0094] If the water bath temperature control enable of the harvesting machine is 0 and the power-on time is not greater than the second set time threshold, or if the harvesting machine is turned off and the water bath temperature control enable of the harvesting machine is 1, it is determined that the fuel supply tank of the engine 6 of the harvesting machine is the auxiliary tank 4.

[0095] In an embodiment of the present application, when the harvesting machine is powered on, the default fuel supply tank is the auxiliary fuel tank 4. When the water bath temperature control enable is set to 0 after power-on and maintained for 3 seconds, the fuel supply tank is determined to be the main fuel tank 1 and the fuel supply tank is switched to the main fuel tank 1; or, when the water bath temperature control enable is set to 1, when the difference between the current oil temperature information and the target oil temperature information is no more than 2°C, the fuel supply tank is determined to be the main fuel tank 1 and the fuel supply tank is switched to the main fuel tank 1.

[0096] When the harvesting machinery is turned off, if the fuel supply tank is the main fuel tank 1 and the water bath temperature control enable is 1, the fuel supply tank is determined to be the auxiliary fuel tank 4 and the fuel supply tank is switched to the auxiliary fuel tank 4. At the same time, the engine 6 is shut down after a delay setting time period. In the implementation of this application, the time period is set to 10 seconds, thereby emptying the No. 0 diesel in the main fuel tank supply pipe 7 to avoid the ambient temperature from dropping during the period when the vehicle is turned off and stationary, causing the No. 0 diesel to condense in the main fuel tank supply pipe 7 and block the oil circuit.

[0097] The controller uses the water bath temperature to control the enabling state, power-on time and the difference between the current oil temperature and the target oil temperature to realize automatic switching of the main and auxiliary fuel tanks 4, ensuring that the auxiliary fuel tank 4 is used to avoid the influence of low temperature in the initial stage of vehicle startup, and timely switching to the main fuel tank 1 when the oil temperature of the main fuel tank 1 is appropriate to reduce costs. When the engine is turned off, the auxiliary fuel tank 4 is switched according to the situation to avoid fuel condensation and clogging the oil pipe. On the premise of reducing the fuel cost of the vehicle, the function usability is improved so that the fuel can be smoothly supplied to the engine 6.

[0098] In an embodiment of the present application, the controller is used to determine, based on the power-on signal of the harvesting machine, the current oil temperature information, and the current water temperature information, whether the water bath temperature control of the harvesting machine is enabled, specifically to:

[0099] Based on a power-on signal of the harvesting machine, determining that an initial water bath temperature control enable of the harvesting machine is 0;

[0100] If the initial water bath temperature control enable of the harvesting machine at the current moment is 0 and the current oil temperature information is not greater than the second set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machine at the current moment is 1, and the initial water bath temperature control enable at the current moment is the water bath temperature control enable at the previous moment;

[0101] If the initial water bath temperature control enable of the harvesting machinery at the current moment is 0 and the current water temperature information is greater than the third set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machinery at the current moment is 1, wherein the third set temperature threshold is greater than the second set temperature threshold, and the second set temperature threshold is greater than the first set temperature threshold.

[0102] In the embodiment of the present application, when the harvester is powered on, the initial water bath temperature control enable is set to 0 by default, the second set temperature threshold is 5°C, and the third set temperature threshold is 55°C. When the harvester's initial water bath temperature control enable is 0 at the current moment and the current oil temperature information is not greater than 5°C, the water bath temperature control enable signal is set to 1, and the ambient temperature of the engine 6 at the current time is set as the current oil temperature information of the main fuel tank 1.

[0103] When the initial water bath temperature control enable of the harvesting machinery at the current moment is 0 and the current water temperature information is greater than 55°C, the water bath temperature control enable signal is set to 1, thereby controlling the main fuel tank 1 to start the water bath heating control state to avoid aggravating the wear of the engine 6 due to the slow rise in water temperature of the engine 6.

[0104] Optionally, a controller is used in the controller for determining the valve opening information of the flow control valve 2 based on the current oil temperature information and the target oil temperature information if the fuel supply tank of the engine 6 of the harvesting machine is the main fuel tank 1, specifically for:

[0105] If the fuel supply tank of the harvesting machine's engine 6 is the main fuel tank 1 , the valve opening information of the flow regulating valve 2 is determined based on the current oil temperature information, the set target oil temperature information and the preset PID algorithm.

[0106] In the embodiment of the present application, the proportional coefficient, integral coefficient and differential coefficient of the PID algorithm are adjusted according to the system characteristics, and the system characteristics include but are not limited to factors such as the heat capacity of diesel, the flow rate in the oil pipe, the thermal conductivity of the oil pipe material, and changes in ambient temperature.

[0107] The controller can determine the valve opening information of the flow control valve 2 using a preset PID algorithm based on the current oil temperature information and the target oil temperature information, thereby adjusting the water bath heating power, which can quickly heat the fuel and maintain a stable oil temperature, ensuring that the fuel can be smoothly supplied to the engine 6.

[0108] Based on Figure 1 The present invention also provides a fuel heating method for harvesting machinery based on the same principle as the system shown in FIG. Figure 2 The fuel heating method for a harvesting machine includes:

[0109] S201, obtaining power-on time of the harvesting machine, current oil temperature information of the main oil tank, and current water temperature information of the engine;

[0110] S202, determining an ambient temperature of the engine based on a power-on time of the harvester, current oil temperature information of a main oil tank, and current water temperature information of the engine;

[0111] S203, determining target oil temperature information of the main oil tank based on the ambient temperature of the engine;

[0112] S204, determining whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank;

[0113] S205. If the fuel supply tank of the harvesting machinery's engine is the main tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information and the set target oil temperature information, and the opening of the flow regulating valve is adjusted based on the valve opening information.

[0114] It should be noted that the execution body of this method can be a controller, and its implementation principle is the same as the principle of the fuel heating system of a harvesting machinery described above, which will not be repeated here.

[0115] Figure 3 This is a structural block diagram of an electronic device 300 according to an embodiment of the present application.

[0116] like Figure 3 As shown, the electronic device 300 includes a processor 301 and a memory 302 , and may further include one or more of an information input / information output (I / O) interface 303 , a communication component 304 , and a communication bus 305 .

[0117] The processor 301 is used to control the overall operation of the electronic device 300 to complete all or part of the steps in the above-mentioned fuel heating method for a harvesting machine. The memory 302 is used to store various types of data to support the operation of the electronic device 300. Such data may include, for example, instructions for any application or method operating on the electronic device 300, as well as application-related data. The memory 302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as one or more of static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0118] The I / O interface 303 provides an interface between the processor 301 and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 304 is used to test wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more thereof, may include: a Wi-Fi component, a Bluetooth component, and an NFC component.

[0119] Communication bus 305 may include a path for transmitting information between the aforementioned components. Communication bus 305 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, for example. Communication bus 305 may be divided into an address bus, a data bus, a control bus, and the like.

[0120] The electronic device 300 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to execute the fuel heating method for harvesting machinery given in the above embodiment.

[0121] The computer-readable storage medium provided in the embodiments of the present application is introduced below. The computer-readable storage medium described below and the fuel heating method for the harvesting machinery described above can be referenced to each other.

[0122] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned fuel heating method for a harvesting machine are implemented.

[0123] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., which can store program codes.

[0124] The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0125] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of application involved in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the aforementioned application concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions applied for in this application.

Claims

1. A fuel heating system for a harvesting machine, characterized in that: The invention comprises a main fuel tank, a flow regulating valve and an engine coolant circulation device connected in sequence to form a circulation loop. A separation layer is provided inside the main fuel tank to form a water bath layer and a fuel layer inside the main fuel tank. The water bath layer is connected to a water inlet and a water outlet. The water outlet is arranged below the water inlet, and the height difference between the water inlet and the water outlet is greater than the minimum liquid level of the water bath layer. An oil temperature sensor is provided in the fuel layer, and an engine water temperature sensor is provided in the engine coolant circulation device. The oil temperature sensor, the engine water temperature sensor and the flow regulating valve are all electrically connected to a controller. The controller is used to obtain the power-on time of the harvesting machine, the current oil temperature information of the main oil tank and the current water temperature information of the engine; Determining the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine; determining target oil temperature information of the main oil tank based on the ambient temperature of the engine; Determining whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank; If the fuel supply tank of the harvesting machinery's engine is the main tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information and the target oil temperature information, and the opening of the flow regulating valve is adjusted based on the valve opening information.

2. The fuel heating system for a harvesting machine according to claim 1, characterized in that: It also includes an auxiliary fuel tank and a fuel switching valve, the fuel switching valve is connected to the engine through the engine fuel supply pipe, the auxiliary fuel tank is connected to the fuel switching valve through the auxiliary fuel tank fuel supply pipe, and the main fuel tank is connected to the fuel switching valve through the main fuel tank fuel supply pipe. The freezing point of the diesel stored in the auxiliary fuel tank is lower than the freezing point of the diesel in the main fuel tank.

3. The fuel heating system for a harvesting machine according to claim 1, characterized in that: The controller is configured to determine the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine, specifically for: When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the flameout time of the previous power-on cycle of the current power-on cycle is not less than a first set time threshold, determining whether the current oil temperature information is less than the current water temperature information; If the current oil temperature information is lower than the current water temperature information, determining the ambient temperature of the engine as the current oil temperature information; If the current oil temperature information is not less than the current water temperature information, determining that the ambient temperature of the engine is the current water temperature information; When the time interval between the power-on time of the harvesting machine in the current power-on cycle and the power-off time of the previous power-on cycle of the current power-on cycle is not less than the first set time threshold, the ambient temperature is determined to be the historical ambient temperature of the previous power-on cycle of the current power-on cycle.

4. A fuel heating system for a harvesting machine according to claim 2, characterized in that: The controller is used to determine whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank, specifically for: Determine, based on the power-on signal of the harvesting machinery, the current oil temperature information, and the current water temperature information, a water bath temperature control enable of the harvesting machinery, wherein the water bath temperature control enable is 0 or 1, wherein the water bath temperature control enable is 0 and represents a control state in which the heating of the main oil tank is turned off, and the water bath temperature control enable is 1 and represents a control state in which the heating of the main oil tank is turned on; If the water bath temperature control enable of the harvesting machine is 0 and the power-on time is greater than the second set time threshold, or if the water bath temperature control enable of the harvesting machine is 1 and the difference between the current oil temperature information and the target oil temperature information is not greater than the first set temperature threshold, it is determined that the fuel supply tank of the engine of the harvesting machine is the main fuel tank, and the first set time threshold is greater than the second set time threshold; If the water bath temperature control enable of the harvesting machinery is 0 and the power-on time is not greater than the second set time threshold, or if the harvesting machinery is turned off and the water bath temperature control enable of the harvesting machinery is 1, it is determined that the fuel supply tank of the engine of the harvesting machinery is a subsidiary tank.

5. A fuel heating system for a harvesting machine according to claim 4, characterized in that: The controller is configured to determine, based on the power-on signal of the harvesting machine, current oil temperature information, and current water temperature information, whether the water bath temperature control of the harvesting machine is enabled, specifically to: Based on a power-on signal of the harvesting machine, determining that an initial water bath temperature control enable of the harvesting machine is 0; If the initial water bath temperature control enable of the harvesting machine at the current moment is 0 and the current oil temperature information is not greater than the second set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machine at the current moment is 1, and the initial water bath temperature control enable at the current moment is the water bath temperature control enable at the previous moment; If the initial water bath temperature control enable of the harvesting machinery at the current moment is 0 and the current water temperature information is greater than the third set temperature threshold, then it is determined that the current water bath temperature control enable of the harvesting machinery at the current moment is 1, wherein the third set temperature threshold is greater than the second set temperature threshold, and the second set temperature threshold is greater than the first set temperature threshold.

6. The fuel heating system for a harvesting machine according to claim 1, characterized in that: The controller is configured to determine the valve opening information of the flow control valve based on the current oil temperature information and the target oil temperature information if the fuel supply tank of the engine of the harvesting machine is the main oil tank, specifically for: If the fuel supply tank of the engine of the harvesting machinery is the main fuel tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information, the set target oil temperature information and the preset PID algorithm.

7. The fuel heating system for a harvesting machine according to claim 1, characterized in that: The oil temperature sensor is arranged in the main oil tank on one side close to the oil outlet of the main oil tank.

8. A fuel heating method for harvesting machinery, characterized in that: include: Obtain the power-on time of the harvesting machinery, the current oil temperature of the main fuel tank, and the current water temperature of the engine; Determining the ambient temperature of the engine based on the power-on time of the harvesting machine, the current oil temperature information of the main oil tank, and the current water temperature information of the engine; determining target oil temperature information of the main oil tank based on the ambient temperature of the engine; Determining whether the fuel supply tank of the engine of the harvesting machine is the main fuel tank; If the fuel supply tank of the harvesting machinery's engine is the main tank, the valve opening information of the flow regulating valve is determined based on the current oil temperature information and the set target oil temperature information, and the opening of the flow regulating valve is adjusted based on the valve opening information.

9. An electronic device, characterized in that: comprising a processor coupled to a memory; The processor is configured to execute the computer program stored in the memory, so that the electronic device performs the method according to claim 8.

10. A computer-readable storage medium, characterized in that The method comprises a computer program or instructions, which, when executed on a computer, causes the computer to execute the method according to claim 8.

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