A methanol temperature control device, a methanol temperature control method and an electronic device

Abstract

The application discloses a methanol temperature control device, a methanol temperature control method and electronic equipment, and relates to the field of vehicle engineering, and comprises a methanol temperature sensor, a controller, a first heat exchanger, a first electromagnetic water valve, a water tank and an electronic fan, wherein the water tank is different from an engine cooling water tank; the first heat exchanger is provided with a methanol pipeline and a methanol coolant pipeline; the water tank is arranged in a blowing area; a first water outlet end of the water tank is connected with one end of the methanol coolant pipeline and is provided with the first electromagnetic water valve, and the other end of the methanol coolant pipeline is connected with a first water return end of the water tank; one end of the methanol pipeline is connected with a methanol tank, the other end of the methanol pipeline is connected with an engine and is provided with the methanol temperature sensor, so as to collect the methanol temperature; and the controller is electrically connected with the methanol temperature sensor, the electronic fan and the first electromagnetic water valve. According to the application, the electromagnetic water valve is used for controlling the flow, the electronic fan is used for realizing temperature control, the methanol temperature is realized by two-way control, the engine coolant is avoided, and the fluctuation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle engineering, and in particular to a methanol temperature control device, a methanol temperature control method and an electronic device. BACKGROUND

[0002] A methanol engine refers to an internal combustion engine using methanol as the main fuel. Since the boiling point of methanol is relatively low, once the temperature of methanol is too high, the methanol in the methanol pipeline is prone to gasification, thereby causing fluctuations in the methanol pressure and the methanol flow.

[0003] The current method for controlling the temperature of methanol is to change the temperature of methanol in the pipeline by controlling the flow of cooling liquid flowing through the engine through an electromagnetic water valve. Since the temperature of the cooling liquid flowing through the engine is too high for methanol, it is easy to cause the methanol to gasify, and the electromagnetic water valve is difficult to accurately control the flow of cooling liquid of the engine to control the temperature of the methanol, resulting in large fluctuations in the temperature of the methanol. SUMMARY

[0004] In view of the above problems, the present application provides a methanol temperature control device, a methanol temperature control method and an electronic device to achieve the purpose of reducing the fluctuation of the temperature of methanol. The specific scheme is as follows:

[0005] The first aspect of the present application provides a methanol temperature control device, which comprises a methanol temperature sensor, a controller, a first heat exchanger, a first electromagnetic water valve, a water tank and an electronic fan, wherein the water tank is different from the engine cooling water tank in the engine cooling circuit;

[0006] The first heat exchanger is provided with a methanol pipeline and a methanol cooling liquid pipeline;

[0007] The water tank is arranged in the blowing area of the electronic fan, so that the electronic fan controls the temperature of the methanol cooling liquid in the water tank;

[0008] The first water outlet end of the water tank is connected with one end of the methanol cooling liquid pipeline, the other end of the methanol cooling liquid pipeline is connected with the first water inlet end of the water tank, and the first electromagnetic water valve is arranged in the connecting pipeline between the first water outlet end and the one end of the methanol cooling liquid pipeline;

[0009] One end of the methanol pipeline is connected with a methanol tank, the other end of the methanol pipeline is connected with an engine, and the methanol temperature sensor is arranged on the connecting pipeline between the other end of the methanol pipeline and the engine to collect the temperature of methanol;

[0010] The controller is electrically connected with the methanol temperature sensor, the electronic fan and the first electromagnetic water valve respectively.

[0011] In a possible implementation, the methanol coolant in the water tank is heated by a self-owned heat source of a vehicle in which the engine is located.

[0012] In a possible implementation, the device further comprises a second heat exchanger and a second electromagnetic water valve, the second heat exchanger being provided with an engine coolant pipeline and a methanol coolant pipeline;

[0013] The water tank is provided with a second water outlet end and a second water return end, one end of the methanol coolant pipeline is connected to the second water outlet end, and the other end of the methanol coolant pipeline is connected to the second water return end.

[0014] One end of the engine coolant pipeline is connected to the water outlet end of the engine cooling water tank, and the other end of the engine coolant pipeline is connected to the water return end of the engine cooling water tank.

[0015] The second electromagnetic water valve is arranged in a connecting pipeline between the second water outlet end and one end of the methanol coolant pipeline.

[0016] In a possible implementation, the device further comprises:

[0017] The water tank is provided with a third water outlet end and a third water return end, one end of the auxiliary heating device is connected to the third water outlet end, and the other end of the auxiliary heating device is connected to the third water return end.

[0018] The third electromagnetic water valve is arranged in a connecting pipeline between the third water outlet end and one end of the auxiliary heating device.

[0019] The second aspect of the present application provides a methanol temperature control method, applied to the methanol temperature control device of the first aspect or any implementation manner of the first aspect, and the methanol temperature control method comprises the following steps of:

[0020] The controller acquires the methanol temperature in the methanol pipeline collected by the methanol temperature sensor.

[0021] The controller controls the operation mode of the first electromagnetic water valve and the electronic fan based on the methanol temperature, so as to control the methanol temperature.

[0022] In a possible implementation, the controller controls the operation mode of the first electromagnetic water valve and the electronic fan based on the methanol temperature, so as to control the methanol temperature, which comprises the following steps of:

[0023] If the methanol temperature is not greater than the first temperature limit value, the methanol coolant flow rate of the water tank flowing through the first heat exchanger is controlled by the first electromagnetic water valve, so as to control the methanol temperature in the methanol pipeline.

[0024] If the methanol temperature is greater than the first temperature limit, then the methanol coolant flowing through the first heat exchanger is temperature-controlled by the electronic fan while the flow of the methanol coolant flowing through the first heat exchanger is controlled by the first electromagnetic water valve.

[0025] In a possible implementation, the temperature-controlling, if the methanol temperature is greater than the first temperature limit, the methanol coolant flowing through the first heat exchanger is temperature-controlled by the electronic fan while the flow of the methanol coolant flowing through the first heat exchanger is controlled by the first electromagnetic water valve, includes:

[0026] When the temperature of the methanol temperature is greater than the first temperature limit, a temperature interval to which the methanol temperature falls is determined.

[0027] The opening of the first electromagnetic water valve is controlled to be a target opening corresponding to the temperature interval to control the flow of the methanol coolant flowing through the first heat exchanger, and the rotating speed of the electronic fan is controlled to be a target rotating speed corresponding to the temperature interval to temperature-control the methanol coolant flowing through the first heat exchanger.

[0028] In a possible implementation, the temperature-controlling, the opening of the first electromagnetic water valve is controlled to be a target opening corresponding to the temperature interval to control the flow of the methanol coolant flowing through the first heat exchanger, and the rotating speed of the electronic fan is controlled to be a target rotating speed corresponding to the temperature interval to temperature-control the methanol coolant flowing through the first heat exchanger, includes:

[0029] When the methanol temperature is greater than the first temperature limit and is not greater than a second temperature limit, a first opening of the first electromagnetic water valve is determined according to the methanol temperature and a MAP table, and the electronic fan is operated at a first rotating speed to temperature-control the methanol coolant flowing through the first heat exchanger;

[0030] When the methanol temperature is greater than the second temperature limit and is not greater than a third temperature limit, the first opening of the first electromagnetic water valve is reduced to a second opening, and the electronic fan is operated at a second rotating speed to temperature-control the methanol coolant flowing through the first heat exchanger;

[0031] When the methanol temperature is greater than the third temperature limit, the second opening of the first electromagnetic water valve is reduced to a third opening, and the electronic fan is operated at a third rotating speed to temperature-control the methanol coolant flowing through the first heat exchanger;

[0032] The first temperature limit is less than the second temperature limit, and the second temperature limit is less than the third temperature limit.

[0033] The first opening degree is greater than the second opening degree, and the second opening degree is greater than the third opening degree.

[0034] The first rotating speed is lower than the second rotating speed, and the second rotating speed is lower than the third rotating speed.

[0035] In a possible implementation, the method further includes:

[0036] After the electronic fan with the third rotating speed reduces the temperature of the methanol coolant flowing through the first heat exchanger in the water tank to a first temperature range, the third opening degree of the first electromagnetic water valve is increased, and the electronic fan continues to operate at the third rotating speed to control the temperature of the methanol coolant flowing through the first heat exchanger.

[0037] The third aspect of the present application provides an electronic device including at least one processor and a memory connected to the processor, wherein:

[0038] The memory is configured to store a computer program;

[0039] The processor is configured to execute the computer program to enable the electronic device to implement the methanol temperature control method of the first aspect or any implementation manner of the first aspect.

[0040] By means of the above technical solution, the present application provides a methanol temperature control device, a methanol temperature control method and an electronic device. The methanol temperature control device separately provides a water tank for methanol, and provides methanol coolant for temperature control of methanol. The device can not only control the flow of methanol coolant through the first electromagnetic water valve, but also control the temperature of methanol coolant through the electronic fan, realize two-link control of methanol temperature, and avoid using engine coolant to heat methanol, effectively reducing the volatility of methanol temperature. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent by describing in detail the following specific embodiments with reference to the attached drawings. Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. It should be understood that the drawings are schematic, and the original and elements are not necessarily drawn according to the scale.

[0042] Figure 1 A structural schematic diagram of a methanol temperature control device provided by the present application;

[0043] Figure 2 A structural schematic diagram of another methanol temperature control device provided by the present application;

[0044] Figure 3 A flowchart of a methanol temperature control method provided by the present application;

[0045] Figure 4A hardware structure block diagram of an electronic device is provided.

[0046] Reference signs:

[0047] 1 - methanol temperature sensor; 2 - controller; 3 - first heat exchanger; 4 - first electromagnetic water valve; 5 - water tank; 6 - electronic fan. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described below in conjunction with the accompanying drawings. The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0049] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art can know that, with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0050] The terms "first", "second", and the like in the specification of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is only a way of distinguishing the objects with the same attributes in the description of the embodiments of the present application. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that the processes, methods, systems, products or devices containing a series of units do not necessarily limit to those units, but can include other units not clearly listed or inherent to these processes, methods, products or devices.

[0051] The methanol engine is an internal combustion engine using methanol as the main fuel. In order to make the combustion of methanol more sufficient and improve the combustion efficiency and power performance of the engine, the liquid methanol is usually gasified and then sent into the engine for combustion. Since the gasification effect of methanol is poor in low temperature environment, the methanol needs to be heated in advance to improve the gasification of methanol. The current methanol heating method is to heat the methanol by the cooling water circuit of the engine, that is, in the heat exchanger, the cooling water circuit of the engine is used to exchange heat with the methanol pipeline full of methanol, so as to heat the methanol in the methanol pipeline.

[0052] The optimal operating temperature of an engine is generally between 85 and 105 degrees Celsius, and the coolant temperature in the engine's cooling water circuit is generally between 80 and 100 degrees Celsius. However, the boiling point of methanol is 64.7 degrees Celsius (the fixed temperature at which methanol transitions from liquid to gas under standard atmospheric conditions). Current methanol heating methods heat methanol through the engine's cooling water circuit. However, the coolant temperature in the engine's cooling water circuit is too high for methanol, easily causing it to reach its boiling point and vaporize. Furthermore, the engine coolant flow is controlled solely by a solenoid valve in the engine's cooling water circuit. Slight changes in the valve's opening can cause the coolant, which has a temperature far above the boiling point of methanol, to rapidly change the methanol's temperature. Consequently, the solenoid valve's single-pole control easily results in large changes in the methanol's temperature, resulting in significant fluctuations. Consequently, current methanol temperature control methods, which only heat the methanol by controlling the engine coolant flow through the solenoid valve, result in significant temperature fluctuations. Furthermore, these methods cannot rapidly reduce the methanol's temperature to prevent excessive vaporization when the temperature is too high.

[0053] In order to solve the above problems, the embodiment of the present application provides a methanol temperature control device. The methanol temperature control device of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0054] Reference Figure 1 , Figure 1 A schematic diagram of the structure of a methanol temperature control device provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, a methanol temperature control device provided in an embodiment of the present application may include a methanol temperature sensor 1, a controller 2, a first heat exchanger 3, a first electromagnetic water valve 4, a water tank 5 and an electronic fan 6. The water tank is different from the engine cooling water tank in the engine cooling circuit;

[0055] The first heat exchanger 3 is provided with a methanol pipeline and a methanol coolant pipeline;

[0056] The water tank 5 is arranged in the blowing area of ​​the electronic fan 6, so that the electronic fan 6 controls the temperature of the methanol coolant in the water tank 5;

[0057] The first water outlet end of the water tank 5 is connected to one end of the methanol coolant pipeline, and the other end of the methanol coolant pipeline is connected to the first water return end of the water tank 5. A first electromagnetic water valve 4 is provided in the connecting pipeline between the first water outlet end and one end of the methanol coolant pipeline;

[0058] One end of the methanol pipeline is connected to the methanol tank, and the other end of the methanol pipeline is connected to the engine. A methanol temperature sensor 1 is provided on the connecting pipe between the other end of the methanol pipeline and the engine to collect the methanol temperature;

[0059] The controller 2 is electrically connected with the methanol temperature sensor 1, the electronic fan 6 and the first electromagnetic water valve 4 respectively.

[0060] The controller can be an ECU (Electronic Control Unit) in the vehicle, and the first electromagnetic water valve can be a butterfly valve. Since the coolant temperature in the engine cooling circuit is too high for methanol, the embodiment separately sets a water tank for methanol, and sets a methanol temperature control device based on the separately set water tank, so as to facilitate temperature control of methanol. Of course, the methanol temperature control device can also be considered as a separate methanol temperature control circulating loop. The embodiment can control the flow of coolant in the water tank through the first electromagnetic water valve, so as to control the temperature of methanol.

[0061] When it is necessary to heat the methanol, the methanol coolant in the water tank can be heated in advance. Specifically, as shown in Figure 2 The embodiment can heat the methanol coolant in the water tank 5 through the self heat source of the vehicle where the engine is located. The self heat source of the vehicle can be divided into engine coolant and auxiliary heating device. The auxiliary heating device is a device for providing additional heating, such as an electric heater. Of course, the auxiliary heating can also be realized through a parking heating system, which is a heating system independent of the engine of the vehicle, and mainly heats the coolant through the combustion of fuel.

[0062] The embodiment can use the engine coolant to heat the coolant in the water tank. Therefore, the embodiment can set a second heat exchanger and a second electromagnetic water valve, and the second heat exchanger is provided with an engine coolant pipeline and a methanol coolant pipeline. At the same time, a second water outlet and a second water return are arranged in the water tank. The specific connection relationship can be as follows:

[0063] The second water outlet is connected with one end of the methanol coolant pipeline, and the other end of the methanol coolant pipeline is connected with the second water return. The water outlet of the engine cooling water tank is connected with one end of the engine coolant pipeline, and the other end of the engine coolant pipeline is connected with the water return of the engine cooling water tank. The second electromagnetic water valve is arranged in the connecting pipeline between the second water outlet and one end of the methanol coolant pipeline.

[0064] The engine coolant flows into the engine coolant pipeline of the second heat exchanger through the water outlet end of the engine cooling water tank and flows back into the engine cooling water tank through the water return end of the engine cooling water tank. The methanol coolant in the water tank flows into the methanol coolant pipeline of the second heat exchanger through the second water outlet end, flows back into the water tank from the second water return end after heat exchange with the engine coolant in the second heat exchanger. When the temperature of the methanol coolant in the water tank meets the requirement of heating the methanol, the methanol coolant can be stopped from flowing into the second heat exchanger through the second electromagnetic water valve.

[0065] The methanol coolant in the water tank can be heated by the auxiliary heating device in the embodiment. Therefore, the third water outlet end and the third water return end can be arranged in the water tank, one end of the auxiliary heating device is connected to the third water outlet end, and the other end of the auxiliary heating device is connected to the third water return end. The third electromagnetic water valve is arranged in the connecting pipeline between the third water outlet end and the one end of the auxiliary heating device.

[0066] The methanol coolant in the water tank flows into the auxiliary heating device through the third water outlet end, the auxiliary heating device directly heats the methanol coolant, and the methanol coolant flows back into the water tank through the third water return end. When the temperature of the methanol coolant in the water tank meets the requirement of heating the methanol, the methanol coolant can be stopped from flowing into the auxiliary heating device through the third electromagnetic water valve.

[0067] The electronic fan can be a device arranged separately from the water tank, and the water tank needs to be arranged in the blowing area of the electronic fan, so that the wind blown by the electronic fan can pass through the water tank, thereby cooling the methanol coolant in the water tank. Of course, the pipeline between the water tank and other devices (such as the first heat exchanger) can also be located in the blowing area of the electronic fan.

[0068] When the methanol is heated to the appropriate temperature range (20℃-50℃) by the methanol coolant in the water tank, the first electromagnetic water valve needs to be kept open because the temperature of the methanol needs to be kept in the appropriate temperature range. However, in order to prevent the temperature of the methanol from continuing to rise, the temperature of the methanol coolant can be lowered by the electronic fan. Further, when the temperature of the methanol is too high, the temperature of the methanol coolant can also be rapidly lowered by the electronic fan, and the methanol is cooled by the methanol coolant with lowered temperature, thereby preventing the methanol from being excessively gasified due to the excessively high temperature.

[0069] The methanol temperature control device provided in the embodiment of the present application separately arranges a water tank for the methanol, provides methanol coolant for temperature control of the methanol, and can not only control the flow of the methanol coolant by the first electromagnetic water valve, but also control the temperature of the methanol coolant by the electronic fan, thereby realizing two-stage control of the temperature of the methanol and avoiding the use of engine coolant to heat the methanol, and effectively reducing the volatility of the temperature of the methanol.

[0070] The above introduces a methanol temperature control device provided by the embodiment of the present application. The following introduces a method using the above methanol temperature control device.

[0071] Please refer to Figure 3 , Figure 3 The flowchart of a methanol temperature control method provided by the embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the methanol temperature control method comprises the following steps. Figure 3

[0072] S10, the controller acquires the methanol temperature in the methanol pipeline collected by the methanol temperature sensor;

[0073] S11, the controller controls the operation mode of the first electromagnetic water valve and the electronic fan based on the methanol temperature, so as to control the methanol temperature.

[0074] In the embodiment, the first electromagnetic water valve is used to control the flow of the methanol coolant flowing through the first heat exchanger, and the electronic fan is used to control the temperature of the methanol coolant. Specifically, if the methanol temperature is not greater than the first temperature limit value, the flow of the methanol coolant flowing through the first heat exchanger is controlled by the first electromagnetic water valve, so as to control the temperature of the methanol in the methanol pipeline; if the methanol temperature is greater than the first temperature limit value, the flow of the methanol coolant flowing through the first heat exchanger is controlled by the first electromagnetic water valve, and the temperature of the methanol coolant flowing through the first heat exchanger is controlled by the electronic fan.

[0075] In the embodiment, the first temperature limit value can be 20℃. When the methanol temperature is not greater than the first temperature limit value, the methanol needs to be rapidly heated, and at this time, the flow of the methanol coolant is controlled by the first electromagnetic water valve, so as to heat the methanol in the first heat exchanger. This stage is the heating stage of the methanol, and the electronic fan is turned off, and the opening degree of the first electromagnetic water valve is kept, so as to ensure the continuous heating of the methanol.

[0076] When the methanol temperature is greater than the first temperature limit value, it indicates that the methanol is in the ideal temperature range (20℃-50℃) at this time, and in order to keep the methanol temperature in the ideal temperature range, the first electromagnetic water valve is used to control the heat exchange between the methanol coolant and the methanol, and the electronic fan is turned on at the same time, so as to control the temperature of the methanol coolant, and prevent the methanol temperature from exceeding the ideal temperature range due to the influence of the methanol coolant.

[0077] Therefore, in the embodiment, when the methanol temperature is greater than the first temperature limit value, the temperature interval in which the methanol temperature falls is determined, the opening degree of the first electromagnetic water valve is controlled to be the target opening degree corresponding to the temperature interval, so as to control the flow of the methanol coolant flowing through the first heat exchanger, and the rotating speed of the electronic fan is controlled to be the target rotating speed corresponding to the temperature interval, so as to control the temperature of the methanol coolant flowing through the first heat exchanger. ​

[0078] The temperature control logic of the combination of the first electromagnetic water valve and the electronic fan can be as follows:

[0079] When the methanol temperature is greater than the first temperature limit and is not greater than the second temperature limit, a first opening degree of the first electromagnetic water valve is determined according to the methanol temperature and a MAP table, and the electronic fan is operated at a first rotating speed to control the temperature of the methanol coolant flowing through the first heat exchanger;

[0080] When the methanol temperature is greater than the second temperature limit and is not greater than the third temperature limit, the first opening degree of the first electromagnetic water valve is reduced to a second opening degree, and the electronic fan is operated at a second rotating speed to control the temperature of the methanol coolant flowing through the first heat exchanger;

[0081] When the methanol temperature is greater than the third temperature limit, the second opening degree of the first electromagnetic water valve is reduced to a third opening degree, and the electronic fan is operated at a third rotating speed to control the temperature of the methanol coolant flowing through the first heat exchanger;

[0082] The first temperature limit is less than the second temperature limit, and the second temperature limit is less than the third temperature limit;

[0083] The first opening degree is greater than the second opening degree, and the second opening degree is greater than the third opening degree;

[0084] The first rotating speed is lower than the second rotating speed, and the second rotating speed is lower than the third rotating speed.

[0085] The second temperature limit can be 50℃, and the third temperature limit can be 70℃. The opening degree control of the first electromagnetic water valve can be realized according to a MAP table of the methanol temperature and the opening degree, which can be calibrated in advance. The MAP table can include the corresponding relationship of the methanol temperature, the methanol coolant temperature and the opening degree, such as the valve opening degree of 30% when the methanol temperature is 20℃ and the water temperature is 40℃, and the valve opening degree of 25% when the methanol temperature is 25℃ and the water temperature is 40℃. In actual situations, the opening degree control of the first electromagnetic water valve can be in a dynamic state, and the opening degree of the first electromagnetic water valve is changed in real time according to the methanol temperature.

[0086] Because different methanol engine models have different displacements (the sum of the working volumes of the cylinders of the engine, the displacement determines the amount of methanol fuel that can be inhaled and discharged by the methanol engine), the selected electronic fan models are also different. For example, a small displacement methanol engine can inhale a small amount of methanol fuel, and the volume of methanol in the methanol pipeline connected to the methanol engine is small, so the flow of methanol coolant required to cool the methanol is not large, and the matching electronic fan can be a small wind and low speed model, which can ensure that the methanol coolant is cooled by the methanol coolant in time. For large displacement methanol engines, more methanol fuel can be inhaled, and the volume of methanol in the methanol pipeline connected to the methanol engine is large, so the flow of methanol coolant required to cool the methanol is large, and the matching electronic fan can be a large wind and high speed model, which can ensure that the methanol coolant is cooled by the methanol coolant in time when the temperature is too high. Therefore, for different models of electronic fans, the corresponding first speed, second speed and third speed can be different, but the first speed can correspond to the low speed of the electronic fan, the second speed can correspond to the medium speed of the electronic fan, and the third speed can correspond to the high speed of the electronic fan.

[0087] When the methanol temperature is greater than the first temperature limit and less than the second temperature limit, it indicates that the methanol is in the ideal temperature range at this time, and in order to prevent the methanol temperature from falling, the first electromagnetic water valve needs to be kept open, so that the methanol coolant continues to exchange heat with the methanol. The first embodiment can determine the first opening of the first electromagnetic water valve according to the methanol temperature, and adjust the opening of the first electromagnetic water valve to the first opening. Since the methanol temperature needs to be maintained in the ideal temperature range, the temperature of the methanol coolant needs to be lower than that during the methanol heating stage to prevent the methanol temperature from rising excessively and exceeding the ideal temperature range, so the electronic fan needs to be operated at the first speed to gradually reduce the temperature of the methanol coolant.

[0088] When the methanol temperature is greater than the second temperature limit and less than the third temperature limit, the methanol temperature is high at this time, and in order to reduce the methanol temperature to the ideal temperature range, the opening of the first electromagnetic water valve is reduced to reduce the methanol coolant that maintains the methanol temperature, and the speed of the electronic fan is increased to the second speed to increase the speed of reducing the temperature of the methanol coolant. Reducing the opening of the first electromagnetic water valve can reduce the flow of high-temperature methanol coolant backflow and reduce the influence on the temperature of the cooled methanol coolant.

[0089] When the methanol temperature is greater than the third temperature limit, the methanol is in an over-temperature state, and the methanol temperature needs to be reduced urgently, the second rotation speed of the electronic fan is increased to the third rotation speed (the highest rotation speed of the electronic fan) to rapidly reduce the temperature of the methanol coolant, and in order to reduce the influence of the high-temperature methanol on the methanol coolant, the opening of the first electromagnetic water valve needs to be further reduced to further reduce the influence of the backflow of the high-temperature methanol coolant on the temperature of the cooled methanol coolant, without affecting the cooling effect of the electronic fan on the methanol coolant in the water tank. When the electronic fan at the third rotation speed reduces the temperature of the methanol coolant flowing through the first heat exchanger in the water tank to the first temperature range, the third opening of the first electromagnetic water valve is increased, so that the cooled methanol coolant cools the methanol, and the electronic fan continues to operate at the third rotation speed to control the temperature of the methanol coolant flowing through the first heat exchanger. The first temperature range can be 20-50℃, at this time, the temperature of the methanol coolant in the water tank is much lower than the temperature of the methanol, and therefore the opening of the first electromagnetic water valve can be increased to rapidly exchange heat between the methanol coolant and the methanol to rapidly reduce the temperature of the methanol, and the electronic fan continues to operate to cool the backflow of the methanol coolant.

[0090] The methanol temperature control method in the embodiment provides an independent temperature control loop for the methanol to reduce the use of the coolant flowing through the engine. When the temperature of the methanol is not greater than the first temperature limit, the first electromagnetic water valve is used to control the temperature of the methanol cooled by the methanol coolant in the control loop, and when the temperature of the methanol exceeds the first temperature limit, it is difficult to stably control the temperature of the methanol only by using the flow of the methanol coolant in the first electromagnetic water valve control loop, therefore, the electronic fan is added to control the temperature of the methanol coolant flowing through the methanol pipeline to reduce the influence of the temperature of the methanol on the temperature of the methanol coolant, thereby reducing the temperature fluctuation of the methanol. The two-stage combined temperature control method effectively stabilizes the temperature of the methanol in a reasonable range and reduces the temperature fluctuation of the methanol.

[0091] The embodiment of the present application further provides an electronic device. Referring to Figure 4 Fig. 1 shows a structural schematic diagram of an electronic device suitable for implementing the electronic device in the embodiment of the present application. The electronic device in the embodiment of the present application can include but is not limited to a fixed terminal such as a mobile phone, a notebook computer, a PDA (Personal Digital Assistant), a PAD (Tablet Personal Computer), a desktop computer, etc. Figure 4 The electronic device shown is only an example, and should not bring any limitation to the functions and use range of the embodiment of the present application.

[0092] As Figure 4As shown, the electronic device can include a processing device (e.g., a central processor, a graphics processor, etc.) 401 that can perform various appropriate actions and processes according to programs stored in a read only memory (ROM) 402 or loaded into a random access memory (RAM) 403 from a storage device 408. In a state where the electronic device is powered on, various programs and data required for operation of the electronic device are also stored in the RAM 403. The processing device 401, the ROM 402, and the RAM 403 are connected to each other through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0093] Generally, the following devices can be connected to the I / O interface 405: input devices 406 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; output devices 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 408 including, for example, a memory card, a hard disk, etc.; and communication devices 409. The communication devices 409 can allow the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 4 The electronic device is shown with various devices, but it should be understood that all of the shown devices are not required, and more or fewer devices can alternatively be implemented.

[0094] The embodiments of the present application also provide a computer program product including computer readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the methanol temperature control methods provided by the embodiments of the present application.

[0095] The embodiments of the present application also provide a computer readable storage medium carrying one or more computer programs, which, when executed by an electronic device, can cause the electronic device to implement any of the methanol temperature control methods provided by the embodiments of the present application.

[0096] It should be further noted that the device embodiments described above are only schematic and that the units as described separately can or can not be physically separate, and the components as shown as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purposes of the embodiments. In addition, the connection relationship between the modules in the device embodiments provided by the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0097] Those skilled in the art can clearly understand that the application can be implemented by means of software plus necessary universal hardware, and of course can also be implemented by means of dedicated hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components, etc. Generally, any function completed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure for implementing the same function can also be various, such as analog circuits, digital circuits, or special-purpose circuits, etc. However, for the present application, software program implementation is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, etc., and includes a plurality of instructions for causing a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

[0098] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product.

[0099] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a training device, a data center, etc. integrated with one or more available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0100] Each of the embodiments in the specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the related parts can be referred to the part of the method embodiments.

[0101] The above merely describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A methanol temperature control device, characterized by, The methanol temperature control device comprises a methanol temperature sensor, a controller, a first heat exchanger, a second heat exchanger, a first electromagnetic water valve, a second electromagnetic water valve, a water tank and an electronic fan, the second heat exchanger is provided with an engine coolant pipeline and a methanol coolant pipeline, and the water tank is different from an engine cooling water tank in an engine cooling circuit; The first heat exchanger is provided with a methanol pipeline and a methanol coolant pipeline; The water tank is arranged in a blowing area of the electronic fan, so that the electronic fan controls the temperature of the methanol coolant in the water tank, and the methanol coolant in the water tank is heated by a self-owned heat source of a vehicle in which the engine is arranged; One end of the methanol coolant pipeline is connected with the first water outlet end of the water tank, and the other end of the methanol coolant pipeline is connected with the first water inlet end of the water tank, and the first electromagnetic water valve is arranged in a connecting pipeline between the first water outlet end and the one end of the methanol coolant pipeline; One end of the methanol pipeline is connected with a methanol tank, and the other end of the methanol pipeline is connected with the engine, and the methanol temperature sensor is arranged on a connecting pipeline between the other end of the methanol pipeline and the engine to collect the methanol temperature; The controller is electrically connected with the methanol temperature sensor, the electronic fan and the first electromagnetic water valve respectively; The water tank is provided with a second water outlet end and a second water inlet end, one end of the methanol coolant pipeline is connected with the second water outlet end, and the other end of the methanol coolant pipeline is connected with the second water inlet end; One end of the engine coolant pipeline is connected with a water outlet end of the engine cooling water tank, and the other end of the engine coolant pipeline is connected with a water inlet end of the engine cooling water tank; The second electromagnetic water valve is arranged in a connecting pipeline between the second water outlet end and one end of the methanol coolant pipeline; The water tank is provided with a third water outlet end and a third water inlet end, one end of an auxiliary heating device is connected with the third water outlet end, and the other end of the auxiliary heating device is connected with the third water inlet end; A third electromagnetic water valve is arranged in a connecting pipeline between the third water outlet end and one end of the auxiliary heating device.

2. A method of temperature control of methanol, characterized by, The methanol temperature control method is applied to the methanol temperature control device in claim 1, and the methanol temperature control method comprises the following steps: The controller acquires the methanol temperature in the methanol pipeline collected by the methanol temperature sensor; The controller controls the operation mode of the first electromagnetic water valve and the electronic fan based on the methanol temperature to control the methanol temperature.

3. The methanol temperature control method of claim 2, wherein, The operation mode of the first electromagnetic water valve and the electronic fan based on the methanol temperature to control the methanol temperature comprises the following steps: If the methanol temperature is not greater than a first temperature limit value, the methanol coolant flow rate of the water tank flowing through the first heat exchanger is controlled by the first electromagnetic water valve to control the temperature of the methanol in the methanol pipeline; If the methanol temperature is greater than the first temperature limit value, the methanol coolant flowing through the first heat exchanger is controlled in temperature by the electronic fan while the methanol coolant flow rate flowing through the first heat exchanger is controlled by the first electromagnetic water valve.

4. The methanol temperature control method of claim 3, wherein, If the methanol temperature is greater than the first temperature limit, controlling the flow of methanol coolant through the first heat exchanger by the first electromagnetic water valve while controlling the temperature of the methanol coolant flowing through the first heat exchanger by the electronic fan, comprising: When the temperature of the methanol temperature is greater than the first temperature limit, determining the temperature interval to which the methanol temperature falls; Controlling the opening of the first electromagnetic water valve to be a target opening corresponding to the temperature interval to control the flow of methanol coolant through the first heat exchanger, and controlling the speed of the electronic fan to be a target speed corresponding to the temperature interval to control the temperature of the methanol coolant flowing through the first heat exchanger.

5. The methanol temperature control method of claim 4, wherein, The control of the opening of the first electromagnetic water valve to be a target opening corresponding to the temperature interval to control the flow of methanol coolant through the first heat exchanger, and the control of the speed of the electronic fan to be a target speed corresponding to the temperature interval to control the temperature of the methanol coolant flowing through the first heat exchanger, comprising: When the methanol temperature is greater than the first temperature limit and not greater than the second temperature limit, determining the first opening of the first electromagnetic water valve according to the methanol temperature and the MAP table, and running the electronic fan at a first speed to control the temperature of the methanol coolant flowing through the first heat exchanger; When the methanol temperature is greater than the second temperature limit and not greater than the third temperature limit, reducing the first opening of the first electromagnetic water valve to a second opening, and running the electronic fan at a second speed to control the temperature of the methanol coolant flowing through the first heat exchanger; When the methanol temperature is greater than the third temperature limit, reducing the second opening of the first electromagnetic water valve to a third opening, and running the electronic fan at a third speed to control the temperature of the methanol coolant flowing through the first heat exchanger; The first temperature limit is less than the second temperature limit, and the second temperature limit is less than the third temperature limit; The first opening is greater than the second opening, and the second opening is greater than the third opening; The first speed is lower than the second speed, and the second speed is lower than the third speed.

6. The methanol temperature control method of claim 5, wherein, Further comprising: After the electronic fan at the third speed reduces the temperature of the methanol coolant flowing through the first heat exchanger in the water tank to the first temperature range, increasing the third opening of the first electromagnetic water valve, and the electronic fan continues to run at the third speed to control the temperature of the methanol coolant flowing through the first heat exchanger.

7. An electronic device, comprising: Comprising at least one processor and a memory connected with the processor, wherein: The memory is used to store a computer program; The processor is used to execute the computer program to enable the electronic device to implement the methanol temperature control method of any one of claims 2 to 6.

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