Pressure control method, device and electronic equipment

Abstract

This application discloses a pressure control method, device, and electronic equipment. The method includes: detecting the atmospheric pressure value of the vehicle's external environment and a first gas pressure value inside the vehicle's fuel tank, and determining whether the atmospheric pressure value is less than the first gas pressure value. If so, when the first gas pressure value is less than or equal to a first threshold, a preset valve is opened to introduce air into the fuel tank, and when a second gas pressure value inside the fuel tank is detected to be greater than a second threshold, the preset valve is closed. If not, the preset valve is closed, and a one-way vent valve is used to maintain pressure balance between the gas inside the fuel tank and the atmospheric pressure of the vehicle's external environment. Through this method, when the gas pressure inside the vehicle's fuel tank decreases due to a decrease in the atmospheric pressure of the external environment, the diesel pump's fuel suction capacity can be prevented from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply.

Description

Technical Field

[0001] This application relates to the field of vehicle fuel tank pressure, and in particular to a pressure control method, device, and electronic device. Background Technology

[0002] To prevent fuel evaporation and atmospheric dust from entering the fuel tank, vehicle fuel tanks are typically sealed containers. These closed fuel tanks continuously deliver stored fuel to the vehicle's engine via a diesel pump, ensuring the engine provides sufficient power. During vehicle operation, the fuel level in the closed fuel tank gradually decreases. At this point, the gas pressure inside the fuel tank is lower than the ambient atmospheric pressure. If the gas pressure inside the fuel tank becomes too low, the diesel pump's suction capacity decreases, leading to insufficient fuel supply and preventing the engine from outputting its required power.

[0003] In related technologies, the main method to solve the above problems is to install an exhaust check valve and an intake check valve on the vehicle's fuel tank. When air is intake, outside air enters the fuel tank in one direction through the intake check valve, thereby balancing the air pressure. When air is exhaust, the air in the fuel tank is discharged to the outside through the exhaust check valve, thereby controlling the internal pressure of the fuel tank.

[0004] In the above method, if the vehicle is driving in a high-altitude environment, the atmospheric pressure of the outside environment is lower than the gas pressure in the fuel tank. This prevents outside air from entering the fuel tank through the intake one-way valve, and the air in the fuel tank will be discharged to the outside through the exhaust one-way valve, resulting in a decrease in the gas pressure in the fuel tank. Once the gas pressure in the fuel tank is too low, and the atmospheric pressure of the outside environment is also lower than that pressure, the fuel pump's ability to draw fuel will still decrease, which will cause the engine to be unable to output the required power due to insufficient fuel supply. Summary of the Invention

[0005] This application provides a pressure control method, device, and electronic device that can solve the problem in existing fuel tank pressure control methods where the gas pressure inside the vehicle's fuel tank decreases due to a drop in atmospheric pressure in the external environment, which may lead to a decrease in the fuel pump's suction capacity and consequently cause the engine to be unable to output the required power due to insufficient fuel supply.

[0006] In a first aspect, this application provides a pressure control method, the method comprising:

[0007] The atmospheric pressure value of the vehicle's external environment and the first gas pressure value inside the vehicle's fuel tank are detected, and it is determined whether the atmospheric pressure value is less than the first gas pressure value.

[0008] If so, when the first gas pressure value is less than or equal to the first threshold, the preset valve is opened to charge air into the fuel tank, and when the second gas pressure value inside the fuel tank is detected to be greater than the second threshold, the preset valve is closed, wherein the first threshold is greater than the atmospheric pressure value, and the second threshold is the maximum internal gas pressure corresponding to when the fuel tank can supply fuel normally;

[0009] If not, the preset valve is closed, and the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle is maintained through the one-way vent valve.

[0010] By using the above method, when the gas pressure in the vehicle's fuel tank decreases due to the decrease in atmospheric pressure in the external environment, the diesel pump's fuel suction capacity can be prevented from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply.

[0011] In one possible design, opening the preset valve to introduce air into the fuel tank includes:

[0012] When the preset valve is opened to charge air into the fuel tank, the air flow rate is obtained by an air flow meter.

[0013] When the incoming flow rate is greater than the preset flow rate value, the incoming flow rate is reduced by controlling the opening degree of the preset valve.

[0014] By controlling the air intake flow rate using the methods described above, fuel tank explosion accidents caused by excessive instantaneous pressure rise in the gas inside the fuel tank can be avoided.

[0015] In one possible design, opening the preset valve to introduce air into the fuel tank further includes:

[0016] The outside air entering the vehicle is filtered to obtain filtered outside air;

[0017] The filtered outside air is compressed to obtain compressed air;

[0018] The temperature of the compressed air is reduced to obtain the air.

[0019] By using the above method to filter the outside air entering the vehicle, filtered outside air free of particles and impurities can be obtained. Furthermore, by compressing the filtered outside air, the pressure of the filtered air can be increased, and the compressed air can be cooled to obtain air that avoids the fuel tank bursting due to excessively high air temperature.

[0020] In one possible design, the method further includes:

[0021] When the first gas pressure value is greater than the third threshold, the preset valve is closed and the pressure regulating valve is opened to purge the air from the fuel tank, wherein the third threshold is greater than the second threshold;

[0022] In response to opening the pressure regulating valve, when the third gas pressure value in the fuel tank is detected to be less than or equal to the second threshold, the pressure regulating valve is closed.

[0023] The above methods can prevent excessive gas pressure inside the fuel tank due to abnormal conditions, which could affect the diesel pump's fuel intake.

[0024] Secondly, this application provides a pressure control device, the device comprising:

[0025] The determination module is used to detect the atmospheric pressure value of the external environment of the vehicle and the first gas pressure value in the fuel tank of the vehicle, and to determine whether the atmospheric pressure value is less than the first gas pressure value.

[0026] The first control module is configured to, if the atmospheric pressure value is less than the first gas pressure value, open a preset valve to charge air into the fuel tank when the first gas pressure value is less than or equal to a first threshold, and close the preset valve when a second gas pressure value in the fuel tank is detected to be greater than a second threshold, wherein the first threshold is greater than the atmospheric pressure value, and the second threshold is the maximum internal gas pressure value corresponding to when the fuel tank can supply fuel normally.

[0027] The second control module is used to close the preset valve if the atmospheric pressure value is greater than or equal to the first gas pressure value, and to maintain the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle through a one-way vent valve.

[0028] In one possible design, the first control module is specifically used for:

[0029] When the preset valve is opened to charge air into the fuel tank, the air flow rate is obtained by an air flow meter.

[0030] When the incoming flow rate is greater than the preset flow rate value, the incoming flow rate is reduced by controlling the opening degree of the preset valve.

[0031] In one possible design, the first control module is also used for:

[0032] The outside air entering the vehicle is filtered to obtain filtered outside air;

[0033] The filtered outside air is compressed to obtain compressed air;

[0034] The temperature of the compressed air is reduced to obtain the air.

[0035] In one possible design, the device further includes:

[0036] The third control module is used to close the preset valve and open the pressure regulating valve to discharge air from the fuel tank when the first gas pressure value is greater than the third threshold.

[0037] The shut-off module is used to close the pressure regulating valve in response to opening the pressure regulating valve and detecting that the third gas pressure value in the fuel tank is less than or equal to the second threshold.

[0038] Thirdly, this application provides an electronic device, comprising:

[0039] Memory, used to store computer programs;

[0040] When the processor executes the computer program stored in the memory, it implements the pressure control method steps described above.

[0041] Fourthly, this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the pressure control method steps described above.

[0042] Based on the pressure control method provided in this application, when the atmospheric pressure of the vehicle's external environment is less than the first gas pressure in the vehicle's fuel tank, the gas pressure in the fuel tank is controlled according to the pressure control method corresponding to the magnitude of the first gas pressure. This can prevent the diesel pump's fuel suction capacity from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply. When the atmospheric pressure of the vehicle's external environment is greater than or equal to the first gas pressure in the vehicle's fuel tank, the one-way vent valve can be used to balance the gas pressure inside and outside the fuel tank.

[0043] The technical effects of each of the second to fourth aspects mentioned above, as well as the technical effects that each aspect may achieve, are described above with reference to the technical effects that can be achieved for the first aspect or the various possible solutions in the first aspect, and will not be repeated here. Attached Figure Description

[0044] Figure 1 A schematic diagram of a possible pressure control system provided in an embodiment of this application;

[0045] Figure 2 A flowchart of a pressure control method provided in this application;

[0046] Figure 3A schematic diagram of a pressure control device provided in this application;

[0047] Figure 4 This is a schematic diagram of the structure of an electronic device provided in this application. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The specific operational methods in the method embodiments can also be applied to the device embodiments or system embodiments. It should be noted that in the description of this application, "multiple" is understood as "at least two". "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing together, or B existing alone. A connected to B can represent: A and B directly connected, or A and B connected through C. Furthermore, in the description of this application, terms such as "first" and "second" are used only for distinguishing the purpose of description and should not be construed as indicating or implying relative importance or order.

[0049] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0050] In related technologies, to address the issue that as fuel in a closed fuel tank gradually decreases during vehicle operation, the gas pressure inside the fuel tank becomes lower than the atmospheric pressure outside. This low pressure can reduce the diesel pump's fuel suction capacity, leading to insufficient engine power output due to insufficient fuel supply. The main method employed is to install an exhaust check valve and an intake check valve on the vehicle's fuel tank. During intake, outside air enters the fuel tank through the intake check valve, balancing the pressure. During exhaust, air inside the fuel tank is discharged to the outside through the exhaust check valve, controlling the internal pressure of the fuel tank.

[0051] In the above method, if the vehicle is driving in a high-altitude environment, the atmospheric pressure of the outside environment is lower than the gas pressure in the fuel tank. This prevents outside air from entering the fuel tank through the intake one-way valve, and the air in the fuel tank will be discharged to the outside through the exhaust one-way valve, resulting in a decrease in the gas pressure in the fuel tank. Once the gas pressure in the fuel tank is too low, and the atmospheric pressure of the outside environment is also lower than that pressure, the fuel pump's ability to draw fuel will still decrease, which will cause the engine to be unable to output the required power due to insufficient fuel supply.

[0052] To address the aforementioned problems, this application provides a pressure control method. When the atmospheric pressure outside the vehicle is lower than a first gas pressure inside the fuel tank, the method controls the gas pressure inside the fuel tank according to the magnitude of the first gas pressure. This prevents a decrease in the diesel pump's fuel suction capacity, thereby preventing the engine from failing to output its required power due to insufficient fuel supply. When the atmospheric pressure outside the vehicle is greater than or equal to the first gas pressure inside the fuel tank, a one-way vent valve can balance the gas pressure inside and outside the fuel tank. The methods and apparatus described in this application are based on the same technical concept. Since the principles by which the methods and apparatus solve the problems are similar, embodiments of the apparatus and methods can be referred to interchangeably, and repeated details will not be elaborated further.

[0053] Based on the above technical effects, the preferred embodiments of this application will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. Furthermore, the embodiments of this application and the features in the embodiments can be combined with each other without conflict.

[0054] like Figure 1 The diagram shown is a possible pressure control system according to an embodiment of this application. The system includes: a compressor 11, an air supply line 12, a fuel tank 13, and an engine 14. The compressor 11, the fuel tank 13, and the engine 14 are connected through the air supply line 12. The compressor 11 is also connected to an air filter, an intercooler, and a turbine. The air supply line 12 is also connected to the intercooler. The engine 14 is also connected to the turbine.

[0055] For example, the compressor 11 is used to compress the outside air after it has passed through the air filter, increase the pressure of the outside air to obtain compressed air, and send the compressed air into the intercooler to reduce the temperature of the compressed air to obtain the air in the embodiment of this application.

[0056] Air supply line 12 is used to charge the aforementioned air into fuel tank 13 and generator 14 respectively, thereby increasing the gas pressure in fuel tank 13 and increasing the power of generator 14. Air supply line 12 is equipped with a preset valve, such as a normally open solenoid valve, and an air flow meter. The preset valve is used to charge air into fuel tank 13; the air flow meter is used to obtain the flow rate of the charged air, and the flow rate of the charged air can be controlled by controlling the opening degree of the preset valve.

[0057] The fuel tank 13 is used to continuously supply stored fuel to the engine 14. The fuel tank 13 is equipped with a pressure sensor, a one-way vent valve, and a pressure regulating valve. The pressure sensor is used to detect the gas pressure value inside the vehicle's fuel tank; the one-way vent valve is used to maintain the pressure balance between the gas inside the fuel tank and the external atmosphere of the vehicle; and the pressure regulating valve is used to release the air inside the fuel tank to the external environment of the vehicle.

[0058] The engine 14 provides driving power for the vehicle, and the exhaust gas from the engine 14, after being turbocharged, can drive the compressor 11.

[0059] Based on the above system, the pressure control method provided in the embodiments of this application will be described and explained below with reference to the accompanying drawings, such as... Figure 2 As shown, a pressure control method provided in this application specifically includes the following steps:

[0060] S21, detect the atmospheric pressure value of the vehicle's external environment and the first gas pressure value inside the vehicle's fuel tank, and determine whether the atmospheric pressure value is less than the first gas pressure value.

[0061] In this embodiment, when the vehicle is driving, it may be in a plain or plateau environment. The atmospheric pressure range in a plain environment is 101.3 kPa to 10.3.3 kPa, and the atmospheric pressure range in a plateau environment is 78.9 kPa to 92 kPa. The gas pressure inside the vehicle's fuel tank 13 changes with the atmospheric pressure of the external environment, which may reduce the fuel suction capacity of the diesel pump, resulting in the engine 14 failing to output the required power due to insufficient fuel supply. Of course, the atmospheric pressure of the external environment varies with different driving environments, and the corresponding gas pressure control method inside the fuel tank 13 will also differ. Therefore, to achieve control of the gas pressure inside the fuel tank 13 under different atmospheric pressures in the external environment, it is necessary to first detect the atmospheric pressure value of the vehicle's external environment and the first gas pressure value inside the fuel tank 13. Specifically:

[0062] The atmospheric pressure of the external environment can be detected by the vehicle's own atmospheric pressure sensor, and the initial gas pressure inside the fuel tank 13 can be detected by a pressure sensor installed on the fuel tank 13. The pressure sensor converts the received pressure signal into an electrical signal and transmits it to a display instrument or signal acquisition device. Furthermore, by determining whether the atmospheric pressure of the external environment is less than the initial gas pressure inside the fuel tank 13, a gas pressure control method for the fuel tank 13 corresponding to the current atmospheric pressure of the vehicle can be determined.

[0063] S22, if the atmospheric pressure value is less than the first gas pressure value, then when the first gas pressure value is less than or equal to the first threshold, the preset valve is opened to charge air into the fuel tank, and when the second gas pressure value in the fuel tank is detected to be greater than the second threshold, the preset valve is closed.

[0064] In this embodiment, if the atmospheric pressure is less than a first gas pressure, on the one hand, when the first gas pressure is less than or equal to a first threshold, the corresponding gas pressure control method in the fuel tank 13 is: opening a preset valve to introduce air into the fuel tank, and closing the preset valve when a second gas pressure greater than the second threshold is detected, thereby increasing the gas pressure in the fuel tank 13. The method for introducing air can be:

[0065] The incoming outside air is filtered through an air filter to obtain filtered outside air free of particles and impurities. This filtered outside air is then compressed by an air compressor 11 to increase its pressure, resulting in compressed air. Because the compressed air is too hot, directly filling the fuel tank 13 with it could cause the fuel tank 13 to explode. Therefore, the compressed air needs to be cooled by an intercooler to obtain the air in this embodiment.

[0066] Furthermore, when the first gas pressure value is less than or equal to the first threshold, a preset valve, such as a normally open solenoid valve, is opened to introduce air into the fuel tank 13 through the air supply line 12. Here, the first threshold is greater than atmospheric pressure, and the preset valve can be in a fully open state. At this time, a pressure sensor can continuously detect the gas pressure value inside the fuel tank 13, and when a second gas pressure value inside the fuel tank 13 is detected to be greater than the second threshold, the preset valve is closed. The second threshold is the maximum internal gas pressure corresponding to when the fuel tank 13 can supply fuel normally.

[0067] For example, the ambient atmospheric pressure is 79 kPa, the first gas pressure in the fuel tank 13 is 80 kPa, the first threshold a is 80 kPa, and the second threshold b is 95 kPa. At this time, the first gas pressure is equal to a. The solenoid valve opens, and air is introduced into the fuel tank 13 through the air supply line 12. The gas pressure in the fuel tank 13 begins to rise. When the second gas pressure in the fuel tank 13 is detected to be greater than b, the preset valve closes, stopping the air supply. Thus, by controlling the opening and closing of the solenoid valve, the absolute pressure of the gas in the fuel tank 13 is maintained between a and b, ensuring that the engine 14 outputs the required power.

[0068] Meanwhile, when the preset valve is opened to charge air into the fuel tank 13, in order to avoid the instantaneous pressure of the gas in the fuel tank 13 rising too much, the air flow rate can be obtained by the air flow meter set on the air supply management 12. When the air flow rate is greater than the preset flow rate value, the air flow rate can be reduced by controlling the opening of the preset valve. The preset flow rate value can be 2.5 grams per second or 2.6 grams per second, depending on the situation, and no specific limit is made here.

[0069] For example, if the air flow rate obtained by the air flow meter is 5 grams per second, the preset flow rate is 2.5 grams per second, and the preset valve is fully open, then in order to avoid the instantaneous pressure of the gas in the fuel tank 13 from rising too much, the preset valve is set to half open to reduce the air flow rate.

[0070] On the other hand, when the first gas pressure value is greater than the third threshold, the corresponding gas pressure control method in the fuel tank 13 is as follows: close the aforementioned preset valve to stop charging, and open the pressure regulating valve on the fuel tank 13. Since the air density in the fuel tank 13 is lower than the density of other gases, the air in the fuel tank 13 can be discharged, thereby reducing the gas pressure value in the fuel tank 13. The third threshold is greater than the second threshold. Simultaneously, in response to opening the pressure regulating valve, when the third gas pressure value in the fuel tank 13 is detected to be less than or equal to the second threshold, the pressure regulating valve is closed.

[0071] For example, the first gas pressure in fuel tank 13 is 120 kPa, the second threshold b is 95 kPa, and the third threshold c is 115 kPa. At this time, due to excessive air intake, the first gas pressure in fuel tank 13 exceeds c. To ensure the engine 14 outputs the required power, the pressure regulating valve on fuel tank 13 is opened to expel the air. Simultaneously, in response to the opening of the pressure regulating valve, the pressure sensor on fuel tank 13 detects a third gas pressure of 95 kPa. Since the third gas pressure equals b, the pressure regulating valve is closed, stopping the exhaust.

[0072] By using the above method, when the atmospheric pressure of the vehicle's external environment is lower than the first gas pressure in the vehicle's fuel tank, the gas pressure in the fuel tank can be controlled according to the pressure control method corresponding to the magnitude of the first gas pressure. This can prevent the diesel pump's fuel suction capacity from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply.

[0073] S23, if the atmospheric pressure value is greater than or equal to the first gas pressure value, the preset valve is closed, and the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle is maintained through the one-way vent valve.

[0074] In this embodiment, if the atmospheric pressure of the external environment is greater than or equal to the first gas pressure in the fuel tank 13, the aforementioned preset valve is closed, and the pressure balance between the gas in the fuel tank 13 and the external atmospheric environment is maintained through the one-way vent valve provided on the fuel tank 13. Specifically:

[0075] If the atmospheric pressure of the external environment is equal to the first gas pressure inside the fuel tank 13, the aforementioned preset valve is closed. At this time, outside air will not enter the fuel tank 13 through the one-way vent valve. If the atmospheric pressure of the external environment is greater than the first gas pressure inside the fuel tank 13, the aforementioned preset valve is closed. At this time, outside air will enter the fuel tank 13 through the one-way vent valve until the atmospheric pressure of the external environment is equal to the first gas pressure inside the fuel tank 13. Thus, the one-way vent valve can achieve the purpose of balancing the air pressure inside and outside the fuel tank 13.

[0076] Based on the above pressure control method, when the atmospheric pressure of the vehicle's external environment is less than the first gas pressure in the vehicle's fuel tank, the gas pressure in the fuel tank is controlled according to the pressure control method corresponding to the magnitude of the first gas pressure. Thus, when the gas pressure in the vehicle's fuel tank decreases due to the decrease in the atmospheric pressure of the external environment, the fuel pump's suction capacity can be prevented from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply. When the atmospheric pressure of the vehicle's external environment is greater than or equal to the first gas pressure in the vehicle's fuel tank, the one-way vent valve can be used to balance the gas pressure inside and outside the fuel tank.

[0077] Based on the same inventive concept, this application also provides a pressure control device, such as... Figure 3 The diagram shown is a structural schematic of a pressure control device provided in this application. The device includes:

[0078] The determination module 31 is used to detect the atmospheric pressure value of the external environment of the vehicle and the first gas pressure value in the fuel tank of the vehicle, and to determine whether the atmospheric pressure value is less than the first gas pressure value.

[0079] The first control module 32 is configured to, if the atmospheric pressure value is less than the first gas pressure value, open a preset valve to charge air into the fuel tank when the first gas pressure value is less than or equal to a first threshold, and close the preset valve when the second gas pressure value inside the fuel tank is detected to be greater than the second threshold, wherein the first threshold is greater than the atmospheric pressure value, and the second threshold is the maximum internal gas pressure corresponding to when the fuel tank can supply fuel normally;

[0080] The second control module 33 is used to close the preset valve if the atmospheric pressure value is greater than or equal to the first gas pressure value, and to maintain the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle through the one-way vent valve.

[0081] In one possible design, the first control module 32 is specifically used for:

[0082] When the preset valve is opened to charge air into the fuel tank, the air flow rate is obtained by an air flow meter.

[0083] When the incoming flow rate is greater than the preset flow rate value, the incoming flow rate is reduced by controlling the opening degree of the preset valve.

[0084] In one possible design, the first control module 32 is further configured to:

[0085] The outside air entering the vehicle is filtered to obtain filtered outside air;

[0086] The filtered outside air is compressed to obtain compressed air;

[0087] The temperature of the compressed air is reduced to obtain the air.

[0088] In one possible design, the device further includes:

[0089] The third control module is used to close the preset valve and open the pressure regulating valve to discharge air from the fuel tank when the first gas pressure value is greater than the third threshold.

[0090] The shut-off module is used to close the pressure regulating valve in response to opening the pressure regulating valve and detecting that the third gas pressure value in the fuel tank is less than or equal to the second threshold.

[0091] Based on the aforementioned pressure control device, when the atmospheric pressure of the vehicle's external environment is less than the first gas pressure in the vehicle's fuel tank, the gas pressure in the fuel tank is controlled according to the pressure control method corresponding to the magnitude of the first gas pressure. Thus, when the gas pressure in the vehicle's fuel tank decreases due to the decrease in the atmospheric pressure of the external environment, the diesel pump's fuel suction capacity can be prevented from decreasing, thereby preventing the engine from failing to output the required power due to insufficient fuel supply. When the atmospheric pressure of the vehicle's external environment is greater than or equal to the first gas pressure in the vehicle's fuel tank, the one-way vent valve can achieve the purpose of balancing the gas pressure inside and outside the fuel tank.

[0092] Based on the same inventive concept, this application also provides an electronic device that can realize the function of the aforementioned pressure control device. (Refer to...) Figure 4 The electronic device includes:

[0093] At least one processor 41 and a memory 42 connected to at least one processor 41. In this embodiment, the specific connection medium between the processor 41 and the memory 42 is not limited. Figure 4 The example shown is the connection between processor 41 and memory 42 via bus 40. Bus 40 is... Figure 4 The connections between other components are indicated by thick lines and are for illustrative purposes only, not as limiting information. Bus 40 can be divided into address bus, data bus, control bus, etc., for ease of representation. Figure 4 The term 41 is represented by a single thick line, but this does not imply that there is only one bus or one type of bus. Alternatively, processor 41 can also be called controller; there is no restriction on the name.

[0094] In this embodiment, memory 42 stores instructions executable by at least one processor 41. By executing the instructions stored in memory 42, at least one processor 41 can perform the pressure control method described above. Processor 41 can implement... Figure 4 The functions of each module in the device shown.

[0095] The processor 41 is the control center of the device. It can connect to various parts of the control device through various interfaces and lines. By running or executing instructions stored in memory 42 and calling data stored in memory 42, the processor can perform various functions and process data, thereby monitoring the device as a whole.

[0096] In one possible design, processor 41 may include one or more processing units. Processor 41 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may also not be integrated into processor 41. In some embodiments, processor 41 and memory 42 may be implemented on the same chip; in some embodiments, they may also be implemented on separate chips.

[0097] Processor 41 can be a general-purpose processor, such as a central processing unit (CPU), digital signal processor, application-specific integrated circuit, field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the pressure control method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0098] Memory 42, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. Memory 42 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic memory, magnetic disk, optical disk, etc. Memory 42 can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. In the embodiments of this application, memory 42 may also be a circuit or any other device capable of implementing storage functions for storing program instructions and / or data.

[0099] By designing and programming the processor 41, the code corresponding to the pressure control method described in the foregoing embodiments can be embedded into the chip, enabling the chip to execute the code during operation. Figure 2 The steps of the pressure control method in the illustrated embodiment are as follows. How to design and program the processor 41 is a technique well-known to those skilled in the art and will not be described further here.

[0100] Based on the same inventive concept, embodiments of this application also provide a storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the pressure control method described above.

[0101] In some possible implementations, various aspects of the pressure control method provided in this application may also be implemented as a program product comprising program code that, when the program product is run on a device, causes the control device to perform the steps of the pressure control method according to the various exemplary embodiments of this application described above.

[0102] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0103] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0104] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0105] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0106] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A pressure control method, characterized in that, The method includes: The atmospheric pressure value of the vehicle's external environment and the first gas pressure value inside the vehicle's fuel tank are detected, and it is determined whether the atmospheric pressure value is less than the first gas pressure value. If so, when the first gas pressure value is less than or equal to the first threshold, the exhaust gas discharged from the engine is amplified by the turbine and then fed into the compressor through the air supply line. The compressor opens a preset valve to charge air into the fuel tank. When the preset valve is opened to charge air into the fuel tank, the air flow rate is obtained by the air flow meter. When the charging flow rate is greater than the preset flow rate value, the charging flow rate is reduced by controlling the opening of the preset valve. When the second gas pressure value in the fuel tank is detected to be greater than the second threshold, the preset valve is closed. The first threshold is greater than the atmospheric pressure value, and the second threshold is the maximum internal gas pressure corresponding to when the fuel tank can supply fuel normally. If not, the preset valve is closed, and the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle is maintained through the one-way vent valve.

2. The method as described in claim 1, characterized in that, The step of opening the preset valve to introduce air into the fuel tank also includes: The outside air entering the vehicle is filtered to obtain filtered outside air; The filtered outside air is compressed to obtain compressed air; The temperature of the compressed air is reduced to obtain the air.

3. The method as described in claim 1, characterized in that, The method further includes: When the first gas pressure value is greater than the third threshold, the preset valve is closed and the pressure regulating valve is opened to purge the air from the fuel tank, wherein the third threshold is greater than the second threshold; In response to opening the pressure regulating valve, when the third gas pressure value in the fuel tank is detected to be less than or equal to the second threshold, the pressure regulating valve is closed.

4. A pressure control device, characterized in that, The device includes: The determination module is used to detect the atmospheric pressure value of the external environment of the vehicle and the first gas pressure value in the fuel tank of the vehicle, and to determine whether the atmospheric pressure value is less than the first gas pressure value. The first control module is configured to, if the atmospheric pressure value is less than the first gas pressure value, when the first gas pressure value is less than or equal to a first threshold, charge the exhaust gas discharged from the engine into the compressor through the air supply pipeline after being amplified by the turbine, and the compressor opens a preset valve to charge air into the fuel tank. When the preset valve is opened to charge air into the fuel tank, the air flow rate is obtained by an air flow meter. When the charging flow rate is greater than a preset flow rate value, the charging flow rate is reduced by controlling the opening of the preset valve. When a second gas pressure value in the fuel tank is detected to be greater than a second threshold, the preset valve is closed. The first threshold is greater than the atmospheric pressure value, and the second threshold is the maximum internal gas pressure value corresponding to when the fuel tank can supply fuel normally. The second control module is used to close the preset valve if the atmospheric pressure value is greater than or equal to the first gas pressure value, and to maintain the pressure balance between the gas in the fuel tank and the external atmosphere of the vehicle through a one-way vent valve.

5. The apparatus as described in claim 4, characterized in that, The first control module is also used for: The outside air entering the vehicle is filtered to obtain filtered outside air; The filtered outside air is compressed to obtain compressed air; The temperature of the compressed air is reduced to obtain the air.

6. The apparatus as claimed in claim 4, characterized in that, The device further includes: The third control module is used to close the preset valve and open the pressure regulating valve to discharge air from the fuel tank when the first gas pressure value is greater than the third threshold. The shut-off module is used to close the pressure regulating valve in response to opening the pressure regulating valve and detecting that the third gas pressure value in the fuel tank is less than or equal to the second threshold.

7. An electronic device, characterized in that, include: Memory, used to store computer programs; A processor, when executing a computer program stored in the memory, implements the method steps of any one of claims 1-3.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the method steps of any one of claims 1-3.

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