Control method, device, vehicle and medium for variable capacity fuel tank

Abstract

The present invention, applicable to the field of vehicle technology, provides a control method, device, vehicle, and medium for a variable-capacity fuel tank. The method comprises: obtaining the remaining fuel level in the variable-capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions; determining whether to implement a preset fuel tank control strategy based on at least one of the remaining fuel level, workload, and driving conditions; and, if the predetermined fuel tank control strategy is implemented, controlling the opening or closing of a communication port on a fixed partition based on the predetermined fuel tank control strategy to concentrate the fuel in the variable-capacity fuel tank into a spatial area containing the fuel pump. This invention can address the issue of low fuel tank fuel affecting vehicle performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicles, and in particular relates to a control method, device, vehicle and medium for a variable capacity fuel tank. Background Art

[0002] The automotive fuel tank is a core component of the vehicle, and its capacity and environmental suitability determine the overall vehicle performance. Traditional fuel tanks have a fixed volume and a large fuel area, resulting in a high amount of unused fuel. When the fuel level is low (e.g., less than half a tank), they are susceptible to fuel shortages due to driving conditions. For example, when the vehicle is climbing a slope or an incline, the fuel pump may not deliver enough fuel, resulting in a lack of power and a vehicle stall. Furthermore, when the fuel level is low, the free space inside the fuel tank increases, increasing the range of fuel sloshing. This causes a mixture of air and fuel vapor to occupy more space in the tank. Temperature fluctuations within the tank can also cause fuel vapor to form and accumulate. If the fuel level is too low, the concentration of fuel vapor can be high, increasing the load on the vehicle's fuel vapor recovery system, leading to saturation of the carbon canister and the risk of fuel vapor leakage. If the fuel tank is chronically low, the fuel pump may overheat due to lack of fuel cooling, shortening its service life and increasing the risk of vehicle stalling. Furthermore, the prolonged storage of fuel at the bottom of the tank can cause gasoline degradation, affecting fuel efficiency. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a control method for a variable capacity fuel tank to solve the problem that the fuel tank affects vehicle performance under low fuel level conditions.

[0004] A first aspect of an embodiment of the present invention provides a control method for a variable-capacity fuel tank. The variable-capacity fuel tank includes at least one fixed partition disposed therein. The at least one fixed partition is configured to separate the internal space of the variable-capacity fuel tank into a space region containing a fuel pump and at least one space region not containing a fuel pump. Each fixed partition is provided with a communication port connecting adjacent spaces containing the fuel pump and the adjacent spaces not containing the fuel pump.

[0005] The method comprises:

[0006] obtaining the remaining fuel amount in the variable capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions;

[0007] determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, the workload, and the driving road condition;

[0008] If the judgment result is to execute the preset fuel tank control strategy, based on the preset fuel tank control strategy, the communication port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the oil pump.

[0009] In conjunction with the first aspect, in a possible implementation of the first aspect, determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes:

[0010] If the remaining fuel level is less than or equal to a first preset fuel level threshold, and the workload is greater than a preset load threshold, the preset fuel tank control strategy is executed.

[0011] In conjunction with the first aspect, in a possible implementation of the first aspect, determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes:

[0012] If the remaining fuel level is less than or equal to a second preset fuel level threshold, and the driving road condition is that there is a slope within a preset distance ahead, the preset fuel tank control strategy is executed.

[0013] In conjunction with the first aspect, in a possible implementation of the first aspect, determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes:

[0014] If the remaining fuel level is less than or equal to a third preset fuel level threshold, whether to execute the preset fuel tank control strategy is determined based on whether a target execution instruction is received.

[0015] In conjunction with the first aspect, in a possible implementation of the first aspect, the preset fuel tank control strategy includes:

[0016] determining whether the remaining oil level is less than or equal to a fourth preset oil level threshold, wherein the fourth preset oil level threshold is determined according to the lowest lower edge of the communication port;

[0017] If the remaining fuel level is less than or equal to the fourth preset fuel level threshold, controlling the communication port on the fixed partition to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump;

[0018] If the remaining oil volume is greater than the fourth preset oil volume threshold, the posture of the vehicle is adjusted, and the connecting port on the fixed partition is controlled to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the oil pump.

[0019] In conjunction with the first aspect, in a possible implementation of the first aspect, after determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, the workload, and the driving road condition, the method further includes:

[0020] If the result of the judgment is that the preset fuel tank control strategy is not to be executed, determining whether to execute the preset fuel dispersion strategy according to the remaining fuel amount;

[0021] If the judgment result is to execute the preset fuel dispersion strategy, the communication port on the fixed partition is controlled to be opened or closed based on the preset fuel dispersion strategy to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

[0022] In conjunction with the first aspect, in a possible implementation of the first aspect, determining whether to execute a preset fuel dispersion strategy based on the remaining fuel amount includes:

[0023] If the remaining fuel amount is greater than or equal to a fifth preset fuel amount threshold, the preset fuel diversification strategy is executed; if the remaining fuel amount is less than the fifth preset fuel amount threshold, the preset fuel diversification strategy is not executed;

[0024] The preset fuel dispersion strategy includes:

[0025] The communication port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to less than the fifth preset oil amount threshold, the communication port on the fixed partition is controlled to be closed.

[0026] A second aspect of an embodiment of the present invention provides a control device for a variable-capacity fuel tank. The variable-capacity fuel tank includes at least one fixed partition disposed therein. The at least one fixed partition is configured to separate the internal space of the variable-capacity fuel tank into a space region containing a fuel pump and at least one space region not containing a fuel pump. Each fixed partition is provided with a communication port connecting adjacent spaces containing and not containing a fuel pump.

[0027] The device comprises:

[0028] an acquisition module, configured to acquire the remaining fuel amount in the variable capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions;

[0029] a judgment module, configured to judge whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition;

[0030] A control module is used to control the opening or closing of the connecting port on the fixed partition based on the preset fuel tank control strategy if the judgment result is to execute the preset fuel tank control strategy, so as to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the oil pump.

[0031] In conjunction with the second aspect, in a possible implementation of the second aspect, the judgment module is specifically configured to:

[0032] If the remaining fuel level is less than or equal to a first preset fuel level threshold, and the workload is greater than a preset load threshold, the preset fuel tank control strategy is executed.

[0033] In conjunction with the second aspect, in a possible implementation of the second aspect, the judgment module is specifically configured to:

[0034] If the remaining fuel level is less than or equal to a second preset fuel level threshold, and the driving road condition is that there is a slope within a preset distance ahead, the preset fuel tank control strategy is executed.

[0035] In conjunction with the second aspect, in a possible implementation of the second aspect, the judgment module is specifically configured to:

[0036] If the remaining fuel level is less than or equal to a third preset fuel level threshold, whether to execute the preset fuel tank control strategy is determined based on whether a target execution instruction is received.

[0037] In conjunction with the second aspect, in a possible implementation of the second aspect, the preset fuel tank control strategy includes:

[0038] determining whether the remaining oil level is less than or equal to a fourth preset oil level threshold, wherein the fourth preset oil level threshold is determined according to the lowest lower edge of the communication port;

[0039] If the remaining fuel level is less than or equal to the fourth preset fuel level threshold, controlling the communication port on the fixed partition to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump;

[0040] If the remaining oil volume is greater than the fourth preset oil volume threshold, the posture of the vehicle is adjusted, and the connecting port on the fixed partition is controlled to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the oil pump.

[0041] In conjunction with the second aspect, in a possible implementation of the second aspect, after determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, the workload, and the driving road condition, the control module is further configured to:

[0042] If the result of the judgment is that the preset fuel tank control strategy is not to be executed, determining whether to execute the preset fuel dispersion strategy according to the remaining fuel amount;

[0043] If the judgment result is to execute the preset fuel dispersion strategy, the communication port on the fixed partition is controlled to be opened or closed based on the preset fuel dispersion strategy to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

[0044] In conjunction with the second aspect, in a possible implementation of the second aspect, the control module is specifically configured to:

[0045] If the remaining fuel amount is greater than or equal to a fifth preset fuel amount threshold, the preset fuel diversification strategy is executed; if the remaining fuel amount is less than the fifth preset fuel amount threshold, the preset fuel diversification strategy is not executed;

[0046] The preset fuel dispersion strategy includes:

[0047] The communication port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to less than the fifth preset oil amount threshold, the communication port on the fixed partition is controlled to be closed.

[0048] A third aspect of an embodiment of the present invention provides a vehicle, comprising a memory, a controller, and a computer program stored in the memory and executable on the controller, wherein when the controller executes the computer program, the steps of the method in the first aspect or any one of the implementations of the first aspect are implemented.

[0049] A fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a controller, it implements the steps of the method in the above-mentioned first aspect or any one of the implementation methods of the first aspect.

[0050] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0051] In an embodiment of the present invention, the interior of a variable-capacity fuel tank is divided into a space region containing a fuel pump and at least one space region not containing a fuel pump by at least one fixed partition. Each fixed partition is provided with a communication port connecting the adjacent space region not containing a fuel pump with the adjacent space region containing a fuel pump. By controlling the opening or closing of the communication port on the fixed partition, the distribution of fuel within the fuel tank can be adjusted, thereby achieving flexible and variable fuel tank capacity. Specifically, the embodiment of the present invention monitors the remaining fuel level in the variable-capacity fuel tank, the workload of the vehicle's fuel vapor recovery system, and the vehicle's driving conditions, and then determines whether to execute a preset fuel tank control strategy based on at least one of these. Thus, when necessary, the preset fuel tank control strategy can be executed to control the opening or closing of the communication port on the fixed partition to concentrate fuel in the variable-capacity fuel tank in the space region containing the fuel pump, thereby resolving potential problems such as insufficient fuel supply, fuel vapor leakage, and fuel pump overheating, thereby improving vehicle performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 This is a schematic diagram of the structure of a variable capacity fuel tank provided by an embodiment of the present invention. Figure 1 ;

[0054] Figure 2 This is a schematic diagram of the structure of a variable capacity fuel tank provided by an embodiment of the present invention. Figure 2 ;

[0055] Figure 3 This is a schematic diagram of the structure of a variable capacity fuel tank provided by an embodiment of the present invention. Figure 3 ;

[0056] Figure 4 This is a schematic diagram of the structure of a variable capacity fuel tank provided by an embodiment of the present invention. Figure 4 ;

[0057] Figure 5 Schematic diagram of an application scenario of the control method for a variable capacity fuel tank provided by an embodiment of the present invention;

[0058] Figure 6 1 is a flow chart of a method for controlling a variable capacity fuel tank according to an embodiment of the present invention;

[0059] Figure 7 2 is a schematic structural diagram of a control device for a variable capacity fuel tank provided by an embodiment of the present invention;

[0060] Figure 8 is a schematic structural diagram of a vehicle provided by an embodiment of the present invention;

[0061] Description of reference numerals:

[0062] 1. Fuel tank body; 11. High-position oil chamber; 12. Low-position oil chamber; 13. Diversion slope; 2. Oil pump; 3. Controller; 4. Drive motor; 5. Fixed partition; 51. Slide; 52. Connecting port; 6. Movable gate; 7. Transmission rack; 8. Transmission gear; 9. Travel switch; 10. Elastic part. DETAILED DESCRIPTION

[0063] The present application will be described more clearly below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the function of the present application, but are not intended to limit the present application in any form. It should be noted that those skilled in the art may make a number of modifications and improvements without departing from the concept of the present application. These all fall within the scope of protection of the present application.

[0064] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0065] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0066] In the description of this application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0067] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0068] In addition, the “plurality” mentioned in the embodiments of the present application should be interpreted as two or more.

[0069] First, to address the shortcomings of traditional fuel tanks and support the intelligent control of fuel tanks implemented in this application, embodiments of the present invention design a variable-capacity fuel tank. This tank comprises at least one fixed partition disposed within the tank, which is used to separate the internal space of the variable-capacity fuel tank into a region containing a fuel pump and at least one region not containing a fuel pump. Each fixed partition is provided with a connection port connecting the adjacent regions containing and not containing a fuel pump. This allows the fuel distribution within the tank to be adjusted by controlling the opening or closing of the connection port on the fixed partition, thereby achieving flexible and variable fuel tank capacity.

[0070] Please refer to the following Figures 1 to 4 , the structure of the variable capacity fuel tank provided by an embodiment of the present invention is described.

[0071] A variable capacity fuel tank comprises: a fuel tank body 1, a fixed partition 5, a movable gate 6, and an oil pump 2. A guide slope 13 is formed on the inner side of the bottom of the fuel tank body 1 to create a height difference at the bottom of the tank. The fixed partition 5 is fixed to the interior of the fuel tank body 1 and, by virtue of the height difference of the tank bottom, divides the interior of the fuel tank body 1 into a low-level oil chamber 12 and a high-level oil chamber 11. The lowest point of the low-level oil chamber 12 is lower than the lowest point of the high-level oil chamber 11. The fixed partition 5 is provided with a connecting port 52 connecting the low-level oil chamber 12 and the high-level oil chamber 11. The movable gate 6 is movably connected to the fixed partition 5 and opens or closes the connecting port 52 via a driving mechanism. The oil pump 2 is installed in the low-level oil chamber 12. Here, the low-level oil chamber 12 is the spatial region containing the oil pump, and the high-level oil chamber 11 is the spatial region not containing the oil pump.

[0072] Compared with a fuel tank with a flat bottom, the guide slope 13 formed on the inner side of the bottom of the fuel tank body 1 in this embodiment can ensure that as much fuel as possible is converged and stored in the low-level oil chamber 12, which can reduce the volume of invalid fuel in the fuel tank and improve the utilization rate of fuel.

[0073] In some embodiments, the drive mechanism may include a drive motor 4, a transmission gear 8, and a transmission rack 7. The drive motor 4 is mounted on the outside of the fuel tank body 1, the transmission gear 8 is mounted on the main shaft of the drive motor 4, and the transmission rack 7 is mounted on the movable gate 6. The transmission gear 8 is located inside the fuel tank body 1 and meshes with the transmission rack 7. The drive motor 4 drives the movable gate 6 to slide back and forth along the fixed partition 5 through the rotation of the transmission gear 8, thereby opening or closing the communication port 52. In this embodiment, the movable gate 6 is driven to open or close the communication port 52 through the transmission of the gear and rack.

[0074] In the above embodiment, the installation position of the drive motor 4 can be divided into two types. The first installation method is that the drive motor 4 can be installed on the top of the fuel tank body 1 (such as Figures 1 to 4 As shown in the figure), the movable gate plate 6 slides in the left and right direction perpendicular to the up and down direction of the vehicle; in the second installation method, the drive motor 4 is installed on the outer side surface (left or right side) of the fuel tank body 1, the transmission rack 7 is installed in the up and down direction, and the movable gate plate 6 slides back and forth in the up and down direction. When the movable gate plate 6 slides upward, the communication port 52 is opened, and when the movable gate plate 6 moves downward, the communication port 52 is closed.

[0075] It should be noted that in order to ensure the effectiveness of the fuel connection between the low-level oil chamber 12 and the high-level oil chamber 11, the communication port 52 needs to be located close to the bottom of the fuel tank body 1 to ensure the fluidity of the fuel when the fuel level is low.

[0076] The communication port 52 may be a rectangular hole, a circular hole, a polygonal hole, etc., which is not limited in this embodiment. The communication port 52 may be a hole provided on the fixed partition 5; or it may be a notch provided on one side of the fixed partition 5, such as a notch provided on the lower side of the fixed partition 5, or a notch provided on the left or right side of the fixed partition 5; the communication port 52 may also be a gap formed between the lower edge of the fixed partition 5 and the bottom of the fuel tank body 1. In this case, the lower edge of the fixed partition 5 does not contact the bottom of the fuel tank body 1, and the movable gate slides up and down against the fixed partition 5 to open or close the communication port 52. In some embodiments, see Figure 4 The fixed partition 5 is provided with multiple communication ports 52, each positioned at different heights, with the lowest port 52 located near the bottom of the fuel tank body 1. When multiple communication ports 52 are provided, a separate movable gate 6 can be provided at each port, each equipped with a separate linear actuator. This allows the movable gates of each communication port 52 to be opened or closed independently. For example, each movable gate 6 can be opened or closed by its own electric push rod, allowing the high-positioned or low-positioned communication ports to be closed separately as needed.

[0077] In some embodiments, a limit switch 9 is provided on the fixed partition 5 to limit the opening of the movable gate 6. At this time, the limit switch 9 is set in the direction of opening of the movable gate. When the movable gate 6 is opened to the extreme position, the limit switch 9 is touched, and then the drive motor 4 stops running, avoiding the risk of the movable gate 6 and the slide 51 of the fixed partition 5 being detached, which protects the movement of the movable gate 6. The limit switch 9 and the drive motor 4 are connected to the signal through the controller 3. An elastic member 10 is also provided between the fixed partition 5 and the movable gate 6. The elastic member 10 is connected to the end of the movable gate 6 away from the limit switch 9, and the extension and contraction direction of the elastic member 10 is consistent with the sliding direction of the movable gate 6. When the movable gate 6 is opened, the elastic member 10 is stretched, and the elastic member 10 can store elastic energy. When the movable gate 6 closes the connecting port 52, the elastic energy released by the reset of the elastic member 10 can be used to quickly close the connecting port 52 to quickly cut off the connecting port 52 of the oil and avoid the flow of oil between different oil chambers. For example, this can prevent the oil that has just flowed into the low-level oil chamber 12 from flowing out of the low-level oil chamber again when the vehicle is instantly bumped and vibrated.

[0078] Based on the above variable capacity fuel tank, Figure 5 Schematic diagram of an application scenario of a control method for a variable capacity fuel tank provided by an embodiment of the present invention.

[0079] In the application scenario of this embodiment, the control method of the variable capacity fuel tank can be executed by an electronic control unit (ECU). The ECU receives information such as the remaining fuel in the fuel tank, the workload of the oil and gas recovery system, the driving road conditions, and the vehicle angle, and analyzes and determines an appropriate fuel tank control strategy. The ECU then sends the fuel tank control strategy to the partition controller (i.e., Figures 1 to 4 Controller 3 in the diagram). The partition controller controls the actuators (such as the individual movable gates 6) to open or close the communication port 52 according to the fuel tank control strategy. The electronic controller unit also coordinates and controls the suspension adjustment mechanism to achieve adjustment. The instrument display can show information such as the remaining fuel level, the workload of the oil vapor recovery system, and the fuel tank capacity status.

[0080] The following combination Figure 5 For application scenarios, refer to Figure 6 The following describes a control method for a variable-capacity fuel tank according to an exemplary embodiment of the present application. It should be noted that the aforementioned application scenarios are merely provided to facilitate understanding of the spirit and principles of the present application, and the embodiments of the present application are not limited in this respect. Rather, the embodiments of the present application can be applied to any applicable scenario.

[0081] The following combination Figure 6 As shown, the method of this embodiment is described in detail:

[0082] Step S601 , obtaining the remaining fuel amount in the variable capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving road conditions.

[0083] In this embodiment, the remaining fuel level can be represented by a physical quantity such as the height or volume of the oil. When the remaining fuel level is represented by the height of the oil, the height of the oil in the space containing the oil pump can be detected, and this height can be used for intelligent control of the fuel tank. The remaining fuel level in the fuel tank can be detected by a fuel level sensor. The fuel level sensor is installed inside the fuel tank. It is a float-type sensor, primarily consisting of a float and a variable resistor. When the fuel level in the fuel tank changes, the float moves up and down accordingly. The change in the float's position causes the resistance value of the variable resistor to change. The vehicle's electronic control unit detects this resistance change and determines the fuel level in the tank. It should be noted that in this embodiment, the fuel level sensor is located in the space containing the oil pump, namely, the low-level oil chamber 12. Furthermore, since this application utilizes a variable-capacity fuel tank, the actual fuel level represented by the height of the oil level varies depending on the tank's capacity. The actual fuel level displayed on the instrument panel can be determined by correcting the height of the oil level based on the current capacity of the variable-capacity fuel tank.

[0084] The workload of the oil vapor recovery system can be detected by the carbon canister saturation sensor. In the oil vapor recovery system, the function of the carbon canister is to collect the evaporated oil vapor in the fuel tank and transport it to the engine intake system for combustion at an appropriate time to reduce the emission of fuel vapor into the atmosphere. The carbon canister saturation sensor is mainly used to monitor the adsorption and desorption of oil vapor in the carbon canister. The working principle of the carbon canister saturation sensor is based on some physical or chemical properties. For example, some carbon canister saturation sensors determine the adsorption and desorption status of oil vapor by measuring the pressure change in the carbon canister. When the oil vapor is adsorbed by the carbon canister, the pressure in the carbon canister will change. The sensor can sense this pressure difference and convert it into an electrical signal to be sent to the vehicle's electronic controller unit.

[0085] The driving road conditions can be analyzed and confirmed by the radar system, camera system, navigation map system, etc. installed on the vehicle, which will not be described in detail in this embodiment.

[0086] Step S602 : determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, workload, and driving road conditions.

[0087] In this embodiment, the vehicle can make intelligent decisions based on the remaining fuel volume, workload, and road conditions to determine whether the fuel tank needs to be regulated.

[0088] For example:

[0089] In some embodiments, when the remaining fuel level in the fuel tank is low, the range of fuel sloshing increases, the fuel vapor concentration increases, and the load on the vapor recovery system also increases. If the carbon canister becomes saturated, there is a risk of fuel vapor leakage. Therefore, when the remaining fuel level is less than or equal to a first preset fuel level threshold and the workload exceeds a preset load threshold, the electronic controller unit can execute a predetermined fuel tank control strategy to concentrate the fuel in the variable-capacity fuel tank within the space containing the fuel pump, thereby reducing the range of fuel sloshing, lowering the fuel vapor concentration, and preventing fuel vapor leakage.

[0090] In some embodiments, when the remaining fuel in the fuel tank is low and the road conditions indicate a slope within a preset distance ahead (which can be either uphill or downhill, or a slope that tilts left or right, where a threshold angle can be set to define a slope), the vehicle may tilt and cause the fuel to flow entirely to one side of the fuel tank as it passes over the slope, resulting in the fuel pump being unable to draw fuel and the vehicle losing power. Therefore, when the remaining fuel level is less than or equal to a second preset fuel level threshold and a slope is determined to be within a preset distance ahead, the electronic controller unit can preemptively execute a predetermined fuel tank control strategy to control the opening or closing of the communication port on the fixed partition, thereby concentrating the fuel in the variable-capacity fuel tank within the space containing the fuel pump, thereby preventing the fuel pump from being unable to draw fuel.

[0091] In some embodiments, a car owner may be accustomed to filling up a half-tank of gas, thus not requiring a very large tank. In this scenario, if the fuel tank's remaining fuel level is low and the tank's capacity is large, not only will fuel utilization be reduced, but the fuel pump may also be unable to draw fuel, resulting in a fuel shortage. Therefore, the electronic controller unit can receive a user target execution instruction, such as an instruction to reduce the fuel tank capacity, when the remaining fuel level is less than or equal to a third preset fuel level threshold. Upon receiving the target execution instruction, the electronic controller unit executes a predetermined preset fuel tank control strategy to control the opening or closing of the communication port on the fixed partition, thereby concentrating the fuel in the variable-capacity fuel tank into the spatial area containing the fuel pump, thereby reducing the tank capacity and improving fuel utilization.

[0092] It should be noted that the above embodiment is merely exemplary. This embodiment does not list all possible scenarios. For example, the preset fuel tank control strategy is usually only executed when the remaining fuel amount in the fuel tank is small. However, in some embodiments, the remaining fuel amount can also be determined. For example, when the workload is greater than the preset load threshold, or the driving road condition is that there is a slope within a preset distance ahead, the electronic controller unit can directly execute a certain preset fuel tank control strategy to control the opening or closing of the connecting port on the fixed partition, thereby concentrating the fuel in the variable capacity fuel tank into the spatial area containing the oil pump.

[0093] Furthermore, the first, second, and third preset fuel level thresholds can be the same or different values. Typically, these values ​​are less than 1 / 2 of the fuel tank. In the various embodiments described above, the preset fuel tank control strategies can be the same or different, and this embodiment does not limit this.

[0094] In step S603, if the judgment result is to execute the preset fuel tank control strategy, the communication port on the fixed partition is controlled to be opened or closed based on the preset fuel tank control strategy to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the fuel pump.

[0095] This embodiment does not specifically limit the preset fuel tank control strategy. Figures 1 to 4 Take the variable capacity fuel tank as an example:

[0096] In some embodiments, before executing the preset fuel tank control strategy, the communication ports on each fixed partition may be open. When executing the preset fuel tank control strategy, the fuel in the spatial regions not containing the fuel pump may be first concentrated into the spatial region containing the fuel pump, and then the communication ports may be closed. This allows the fuel in the variable-capacity fuel tank to be concentrated into the spatial region containing the fuel pump, while simultaneously reducing the fuel tank's volume.

[0097] In some embodiments, before executing the preset fuel tank control strategy, some of the communication ports on the fixed partitions are open, while others are closed. When the communication ports on the fixed partitions are closed, the corresponding spatial regions not containing the fuel pump are typically free of fuel. The preset fuel tank control strategy may be to concentrate fuel in the spatial regions not containing the fuel pump, corresponding to the open communication ports, into the spatial region containing the fuel pump, and then close the various communication ports. This concentrates fuel in the variable-capacity fuel tank into the spatial region containing the fuel pump, thereby reducing the fuel tank's volume. Alternatively, if fuel is present in the corresponding spatial regions not containing the fuel pump when the communication ports on the fixed partitions are closed, the preset fuel tank control strategy may be to control the opening of the communication ports on the fixed partitions, concentrate fuel in the corresponding spatial regions not containing the fuel pump into the spatial region containing the fuel pump, and then close the various communication ports. This concentrates fuel in the variable-capacity fuel tank into the spatial region containing the fuel pump, thereby reducing the fuel tank's volume.

[0098] Therefore, there is more than one way to concentrate the fuel in the variable-capacity fuel tank into the spatial area containing the fuel pump. The above-mentioned preset fuel tank control strategy can be set and adjusted according to different scenario requirements and the status of the connecting ports on each fixed partition.

[0099] The interior of a variable-capacity fuel tank in an embodiment of the present invention is divided into a space region containing a fuel pump and at least one space region not containing a fuel pump by at least one fixed partition. Each fixed partition is provided with a connection port connecting the adjacent space region not containing a fuel pump with the adjacent space region containing a fuel pump. By controlling the opening or closing of the connection port on the fixed partition, the fuel distribution within the fuel tank can be adjusted, achieving flexible and variable fuel tank capacity. By monitoring the remaining fuel level in the variable-capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions, a preset fuel tank control strategy can be executed when necessary to control the opening or closing of the connection port on the fixed partition to concentrate the fuel in the variable-capacity fuel tank in the space region containing the fuel pump. This resolves potential issues such as insufficient fuel supply, oil vapor leakage, and fuel pump overheating, thereby improving vehicle performance.

[0100] The above embodiments describe the conditions and scenarios for executing a preset fuel tank control strategy in a variable capacity fuel tank control method. In the following embodiments, the specific execution process of the preset fuel tank control strategy is exemplified.

[0101] In some embodiments, the preset fuel tank control strategy includes:

[0102] determining whether the remaining oil level is less than or equal to a fourth preset oil level threshold, where the fourth preset oil level threshold is determined based on the lowest lower edge of the communication port;

[0103] If the remaining fuel level is less than or equal to a fourth preset fuel level threshold, directly controlling the communication port on the fixed partition to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump;

[0104] If the remaining fuel volume is greater than a fourth preset fuel volume threshold, the vehicle's posture is adjusted, and the connecting port on the fixed partition is controlled to open or close to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the fuel pump.

[0105] Here, the fourth preset oil volume threshold value can be determined based on the lower edge of the communication port at the bottom of each fixed partition. The lower edge heights of the communication ports at the bottom of each fixed partition can be the same (e.g. Figure 3 and Figure 4As shown), at this time, each spatial area that does not contain an oil pump corresponds to the same fourth preset oil volume threshold. The lower edge height of the lowest connecting port of each fixed partition may also be different. At this time, each spatial area that does not contain an oil pump corresponds to a fourth preset oil volume threshold. It can be understood that when a centralized operation is performed on any spatial area that does not contain an oil pump, when the remaining oil volume is less than or equal to the corresponding fourth preset oil volume threshold, the lowest connecting port is opened, and the fuel in the spatial area that does not contain the oil pump automatically flows to the spatial area that contains the oil pump. Therefore, it is only necessary to control the opening or closing of the connecting port on the fixed partition to achieve concentration by utilizing the fuel flow. After concentration, each connecting port is closed to reduce the volume of the fuel tank and prevent fuel dispersion. When the remaining oil volume is greater than the corresponding fourth preset oil volume threshold, it is necessary to control and adjust the posture of the vehicle. For example, to concentrate the fuel in the left-hand area into the area containing the fuel pump, the connecting port on the left fixed bulkhead can be opened first. Then, by controlling the vehicle's chassis suspension, the vehicle can be tilted to the right, allowing the fuel on the left to flow into the area containing the fuel pump. The connecting port on the left fixed bulkhead can then be closed, reducing the tank's volume and preventing fuel from dispersing. The same principle applies to concentrating the fuel in the right-hand area into the area containing the fuel pump.

[0106] In some embodiments, the space containing the fuel pump may contain an excess of fuel. To prevent failure of the fuel tank integrated valve and the carbon canister from being damaged by fuel entering the oil vapor recovery system, the electronic control unit may also implement a predetermined fuel dispersion strategy when the remaining fuel level is greater than or equal to a fifth predetermined fuel level threshold. This strategy opens the communication port on the fixed partition to lower the fuel level. This fifth predetermined fuel level threshold is typically greater than the first, second, third, and fourth predetermined fuel level thresholds described above.

[0107] For example, when using a small-capacity fuel tank (i.e., all the connecting ports on the fixed partition are closed), if the user overfills the tank, the electronic control unit transmits a signal to control the connecting ports on the fixed partition to open, and after the remaining oil volume drops to less than the fifth preset oil volume threshold, controls the connecting ports on the fixed partition to close, thereby protecting the fuel tank.

[0108] Alternatively, before the vehicle passes a ramp, a preset fuel tank control strategy is implemented to concentrate the fuel in the variable-capacity fuel tank into the space containing the fuel pump, ensuring smooth passage through the ramp. After passing the ramp, when the remaining fuel level is greater than or equal to a fifth preset fuel level threshold, a preset fuel distribution strategy is implemented to open the communication port on the fixed baffle and lower the fuel level. Alternatively, after passing the ramp, the preset fuel distribution strategy is directly implemented to open the communication port on the fixed baffle, restoring the vehicle to a large-capacity fuel tank.

[0109] The variable capacity fuel tank and its control strategy of this embodiment have the following advantages:

[0110] (1) By dividing the interior of the fuel tank into two low-level oil chambers and high-level oil chambers with different height differences, the interior of the fuel tank with a large overall cross-sectional area is divided into small oil chambers with smaller cross-sectional areas. The volume of the fuel tank can be adjusted according to demand, thereby improving fuel utilization.

[0111] (2) When the amount of oil in the fuel tank is low, the same volume of fuel can be concentrated in the low-level oil chamber. On the one hand, it can reduce the range of fuel sloshing, reduce the concentration of oil vapor, ensure the effectiveness of the oil and gas recovery system, and avoid the risk of oil and gas leakage. On the other hand, it ensures that the oil volume around the oil pump has a certain depth, so that even when the fuel is in a low oil state, the oil pump can still be cooled, thereby avoiding the risk of damage to the oil pump due to overheating due to low oil volume, and also prolonging the service life of the oil pump and reducing the risk of vehicle failure.

[0112] (3) When passing through uphill and downhill sections, by concentrating the fuel in the low-level oil chamber, the oil supply to the oil pump in the low-level oil chamber can be guaranteed, avoiding the danger of loss of power.

[0113] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0114] Figure 7 It is a structural schematic diagram of a control device 70 for a variable capacity fuel tank provided in an embodiment of the present invention. At least one fixed partition is provided inside the variable capacity fuel tank. The at least one fixed partition is used to separate a space area containing an oil pump and at least one space area not containing an oil pump from the internal space of the variable capacity fuel tank. A connecting port is provided on each fixed partition to connect adjacent space areas not containing an oil pump and space areas containing an oil pump.

[0115] The control device 70 of the variable capacity fuel tank includes:

[0116] an acquisition module 71 for acquiring the remaining fuel amount in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving condition of the vehicle;

[0117] a determination module 72 for determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, workload, and driving conditions;

[0118] The control module 73 is used to control the opening or closing of the connecting port on the fixed partition based on the preset fuel tank control strategy if the judgment result is to execute the preset fuel tank control strategy, so as to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the fuel pump.

[0119] As a possible implementation manner, the determination module 72 is specifically configured to:

[0120] If the remaining fuel level is less than or equal to a first preset fuel level threshold, and the workload is greater than a preset load threshold, the preset fuel tank control strategy is executed.

[0121] As a possible implementation manner, the determination module 72 is specifically configured to:

[0122] If the remaining fuel level is less than or equal to a second preset fuel level threshold, and the driving road condition is that there is a slope within a preset distance ahead, the preset fuel tank control strategy is executed.

[0123] As a possible implementation manner, the determination module 72 is specifically configured to:

[0124] If the remaining fuel level is less than or equal to the third preset fuel level threshold, whether to execute the preset fuel tank control strategy is determined based on whether the target execution instruction is received.

[0125] As a possible implementation, the preset fuel tank control strategy includes:

[0126] determining whether the remaining oil level is less than or equal to a fourth preset oil level threshold, where the fourth preset oil level threshold is determined based on the lowest lower edge of the communication port;

[0127] If the remaining fuel level is less than or equal to a fourth preset fuel level threshold, directly controlling the communication port on the fixed partition to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump;

[0128] If the remaining fuel volume is greater than a fourth preset fuel volume threshold, the vehicle's posture is adjusted, and the connecting port on the fixed partition is controlled to open or close to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the fuel pump.

[0129] As a possible implementation, after determining whether to execute the preset fuel tank control strategy based on at least one of the remaining fuel level, workload, and driving road conditions, the control module 73 is further configured to:

[0130] If the judgment result is that the preset fuel tank control strategy is not to be executed, then judging whether to execute the preset fuel dispersion strategy according to the remaining fuel amount;

[0131] If the judgment result is to execute the preset fuel dispersion strategy, the communication port on the fixed partition is controlled to be opened or closed based on the preset fuel dispersion strategy to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

[0132] As a possible implementation, the control module 73 is specifically configured to:

[0133] If the remaining fuel level is greater than or equal to a fifth preset fuel level threshold, the preset fuel distribution strategy is executed; if the remaining fuel level is less than the fifth preset fuel level threshold, the preset fuel distribution strategy is not executed;

[0134] The preset fuel dispersion strategies include:

[0135] The communication port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to less than a fifth preset oil amount threshold, the communication port on the fixed partition is controlled to be closed.

[0136] The interior of a variable-capacity fuel tank in an embodiment of the present invention is divided into a space region containing a fuel pump and at least one space region not containing a fuel pump by at least one fixed partition. Each fixed partition is provided with a connection port connecting the adjacent space region not containing a fuel pump with the adjacent space region containing a fuel pump. By controlling the opening or closing of the connection port on the fixed partition, the fuel distribution within the fuel tank can be adjusted, achieving flexible and variable fuel tank capacity. By monitoring the remaining fuel level in the variable-capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions, a preset fuel tank control strategy can be executed when necessary to control the opening or closing of the connection port on the fixed partition to concentrate the fuel in the variable-capacity fuel tank in the space region containing the fuel pump. This resolves potential issues such as insufficient fuel supply, oil vapor leakage, and fuel pump overheating, thereby improving vehicle performance.

[0137] Figure 8 FIG. 8 is a schematic diagram of a vehicle 80 provided in one embodiment of the present invention. Figure 8 As shown, the vehicle 80 of this embodiment includes: a controller 81, a memory 82, and a computer program 83 stored in the memory 82 and executable on the controller 81, such as a control program for a variable capacity fuel tank. When the controller 81 executes the computer program 83, the steps of the above-mentioned various control methods for a variable capacity fuel tank are implemented, such as Figure 6 Alternatively, when the controller 81 executes the computer program 83, the functions of the modules / units in the above-mentioned device embodiments are realized, for example, Figure 7 The functions of modules 71 to 73 are shown.

[0138] Exemplarily, the computer program 83 can be divided into one or more modules / units, which are stored in the memory 82 and executed by the controller 81 to implement the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program 83 in the vehicle 80. For example, the computer program 83 can be divided into an acquisition module 71, a judgment module 72, and a control module 73 (modules in the virtual device). The specific functions of each module are as follows:

[0139] an acquisition module 71 for acquiring the remaining fuel amount in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving condition of the vehicle;

[0140] a determination module 72 for determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, workload, and driving conditions;

[0141] The control module 73 is used to control the opening or closing of the connecting port on the fixed partition based on the preset fuel tank control strategy if the judgment result is to execute the preset fuel tank control strategy, so as to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the fuel pump.

[0142] The vehicle 80 may include, but is not limited to, a controller 81 and a memory 82. Those skilled in the art will appreciate that Figure 8 This is merely an example of the vehicle 80 and does not constitute a limitation of the vehicle 80 . The vehicle 80 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the vehicle 80 may also include input and output devices, network access devices, buses, etc.

[0143] The controller 81 may be a central processing unit (CPU), other general-purpose controllers, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose controller may be a microcontroller or any conventional controller.

[0144] The memory 82 may be an internal storage unit of the vehicle 80, such as a hard drive or memory of the vehicle 80. Alternatively, the memory 82 may be an external storage device of the vehicle 80, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Furthermore, the memory 82 may include both an internal storage unit of the vehicle 80 and an external storage device. The memory 82 is used to store the computer program and other programs and data required by the vehicle 80. The memory 82 may also be used to temporarily store data that has been output or is about to be output.

[0145] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0146] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0147] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0148] In the embodiments provided by the present invention, it should be understood that the disclosed devices / vehicles and methods can be implemented in other ways. For example, the device / vehicle embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0149] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0150] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0151] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the controller, it can implement the steps of the above-mentioned various method embodiments. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0152] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A control method for a variable capacity fuel tank, characterized in that: At least one fixed partition is provided inside the variable capacity fuel tank, and the at least one fixed partition is used to separate the internal space of the variable capacity fuel tank into a space area containing a fuel pump and at least one space area not containing a fuel pump, and each fixed partition is provided with a communication port connecting the adjacent space area not containing a fuel pump and the space area containing a fuel pump; The method comprises: obtaining the remaining fuel amount in the variable capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions; determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel level, the workload, and the driving road condition; If the judgment result is to execute the preset fuel tank control strategy, based on the preset fuel tank control strategy, the communication port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the oil pump.

2. The control method of the variable capacity fuel tank according to claim 1, characterized in that: The determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes: If the remaining fuel level is less than or equal to a first preset fuel level threshold, and the workload is greater than a preset load threshold, the preset fuel tank control strategy is executed.

3. The control method of the variable capacity fuel tank according to claim 1, characterized in that: The determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes: If the remaining fuel level is less than or equal to a second preset fuel level threshold, and the driving road condition is that there is a slope within a preset distance ahead, the preset fuel tank control strategy is executed.

4. The control method of the variable capacity fuel tank according to claim 1, characterized in that: The determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition includes: If the remaining fuel level is less than or equal to a third preset fuel level threshold, whether to execute the preset fuel tank control strategy is determined based on whether a target execution instruction is received.

5. The control method of the variable capacity fuel tank according to claim 1, characterized in that: The preset fuel tank control strategy includes: determining whether the remaining oil level is less than or equal to a fourth preset oil level threshold, wherein the fourth preset oil level threshold is determined according to the lowest lower edge of the communication port; If the remaining fuel level is less than or equal to the fourth preset fuel level threshold, controlling the communication port on the fixed partition to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump; If the remaining oil volume is greater than the fourth preset oil volume threshold, the posture of the vehicle is adjusted, and the connecting port on the fixed partition is controlled to open or close so as to concentrate the fuel in the variable capacity fuel tank into the space area containing the oil pump.

6. The control method of a variable capacity fuel tank according to any one of claims 1 to 5, characterized in that: After determining whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition, the method further includes: If the result of the judgment is that the preset fuel tank control strategy is not to be executed, determining whether to execute the preset fuel dispersion strategy according to the remaining fuel amount; If the judgment result is to execute the preset fuel dispersion strategy, the communication port on the fixed partition is controlled to be opened or closed based on the preset fuel dispersion strategy to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

7. The control method of the variable capacity fuel tank according to claim 6, characterized in that: The determining whether to execute a preset fuel dispersion strategy according to the remaining fuel amount includes: If the remaining fuel amount is greater than or equal to a fifth preset fuel amount threshold, the preset fuel diversification strategy is executed; if the remaining fuel amount is less than the fifth preset fuel amount threshold, the preset fuel diversification strategy is not executed; The preset fuel dispersion strategy includes: The communication port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to less than the fifth preset oil amount threshold, the communication port on the fixed partition is controlled to be closed.

8. A control device for a variable capacity fuel tank, characterized in that: At least one fixed partition is provided inside the variable capacity fuel tank, and the at least one fixed partition is used to separate the internal space of the variable capacity fuel tank into a space area containing a fuel pump and at least one space area not containing a fuel pump, and each fixed partition is provided with a communication port connecting the adjacent space area not containing a fuel pump and the space area containing a fuel pump; The device comprises: an acquisition module, configured to acquire the remaining fuel amount in the variable capacity fuel tank, the workload of the vehicle's oil vapor recovery system, and the vehicle's driving conditions; a judgment module, configured to judge whether to execute a preset fuel tank control strategy based on at least one of the remaining fuel amount, the workload, and the driving road condition; A control module is used to control the opening or closing of the connecting port on the fixed partition based on the preset fuel tank control strategy if the judgment result is to execute the preset fuel tank control strategy, so as to concentrate the fuel in the variable capacity fuel tank into the spatial area containing the oil pump.

9. A vehicle comprising a memory, a controller, and a computer program stored in the memory and executable on the controller, wherein: When the controller executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a controller, the steps of the method according to any one of claims 1 to 7 are implemented.

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