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

Abstract

The invention is suitable for the technical field of vehicles, and provides a control method and device for a variable-capacity fuel tank, a vehicle and a medium, and the method comprises the steps that the remaining oil amount in the variable-capacity fuel tank, the working load of an oil vapor recovery system of the vehicle and the driving road condition of the vehicle are obtained; whether a preset fuel tank control strategy is executed or not is judged according to at least one of the remaining fuel quantity, the working load and the driving road condition; and if the judgment result is that the preset fuel tank control strategy is executed, a communication opening in the fixed partition plate is controlled to be opened or closed based on the preset fuel tank control strategy, so that fuel in the variable-capacity fuel tank is concentrated into the space area containing the fuel pump. The problem that the fuel tank influences the vehicle performance under the low-fuel-quantity working condition can be solved.

Description

Technical Field

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

[0002] The automobile fuel tank is a core component of the vehicle, and its capacity and environmental suitability determine the performance of the entire vehicle. The volume of a traditional fuel tank is fixed, the fuel area is large, and a lot of fuel cannot be effectively used. When the fuel volume is low (for example, less than half a tank of fuel), it is easily affected by the driving scene and leads to insufficient fuel supply. For example, when the vehicle is climbing a slope or an inclined road, the fuel pump may not supply enough fuel, resulting in insufficient power of the entire vehicle and the problem of breaking down while climbing. At the same time, when the fuel volume is low, the free space inside the fuel tank increases, and the range of fuel sloshing increases, which will cause the mixture of air and oil vapor to occupy more space in the fuel tank; and the temperature change inside the fuel tank will cause the generation and accumulation of oil vapor. If the fuel volume is too low, the concentration of oil vapor may be high, and the load of the oil and gas recovery system equipped on the vehicle will also increase, resulting in saturation of carbon canister adsorption and the risk of oil and gas leakage. If the fuel tank is in a low fuel state for a long time, the oil pump may also overheat due to lack of sufficient fuel for cooling, thereby shortening its service life and increasing the risk of the entire vehicle breaking down. In addition, these oils are stored at the bottom of the fuel tank for a long time, which will also cause gasoline aging and affect the efficiency of fuel utilization. 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 the 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, wherein at least one fixed partition is provided inside the variable capacity fuel tank, and the at least one fixed partition is used to separate a space region containing an oil pump and at least one space region not containing an oil pump from the internal space of the variable capacity fuel tank, and each fixed partition is provided with a connecting port connecting adjacent space regions not containing an oil pump and space regions containing an oil pump;

[0005] The method comprises:

[0006] Obtaining the remaining fuel volume in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving condition of the vehicle;

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

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

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

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

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

[0012] If the remaining fuel volume is less than or equal to a second preset fuel volume 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 combination with the first aspect, in a possible implementation of the first aspect, judging whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel amount, the workload, and the driving road condition includes:

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

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

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

[0017] If the remaining fuel volume is less than or equal to the fourth preset fuel volume threshold, controlling the communication port on the fixed partition to be opened or closed, so as to concentrate the fuel in the variable capacity fuel tank into the space area including the fuel pump;

[0018] If the remaining fuel volume is greater than the fourth preset fuel 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 fuel pump.

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

[0020] If the judgment result is that the preset fuel tank control strategy is not to be executed, judging 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, then based on the preset fuel dispersion strategy, the connecting port on the fixed partition is controlled to be opened or closed to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

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

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

[0024] The preset fuel dispersion strategy includes:

[0025] The connecting port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to be less than the fifth preset oil amount threshold, the connecting 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, wherein at least one fixed partition is provided inside the variable capacity fuel tank, and the at least one fixed partition is used to separate a space region containing an oil pump and at least one space region not containing an oil pump from the internal space of the variable capacity fuel tank, and each fixed partition is provided with a connecting port connecting the adjacent space region not containing an oil pump and the space region containing an oil pump;

[0027] The device comprises:

[0028] an acquisition module, used to acquire the remaining oil 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;

[0029] a judgment module, configured to judge whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel volume, 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 to the space area containing the oil pump.

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

[0032] If the remaining fuel volume is less than or equal to a first preset fuel volume 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 manner of the second aspect, the determination module is specifically configured to:

[0034] If the remaining fuel volume is less than or equal to a second preset fuel volume 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 manner of the second aspect, the determination module is specifically configured to:

[0036] If the remaining fuel volume is less than or equal to a third preset fuel volume threshold, whether to execute the preset fuel tank control strategy is determined according to 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 volume is less than or equal to a fourth preset oil volume threshold, wherein the fourth preset oil volume threshold is determined according to the lowest lower edge of the communication port;

[0039] If the remaining fuel volume is less than or equal to the fourth preset fuel volume threshold, controlling the communication port on the fixed partition to be opened or closed, so as to concentrate the fuel in the variable capacity fuel tank into the space area including the fuel pump;

[0040] If the remaining fuel volume is greater than the fourth preset fuel 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 fuel pump.

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

[0042] If the judgment result is that the preset fuel tank control strategy is not to be executed, judging 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, then based on the preset fuel dispersion strategy, the connecting port on the fixed partition is controlled to be opened or closed 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 manner of the second aspect, the control module is specifically configured to:

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

[0046] The preset fuel dispersion strategy includes:

[0047] The connecting port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to be less than the fifth preset oil amount threshold, the connecting 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] The variable capacity fuel tank of the embodiment of the present invention is divided into a space area containing an oil pump and at least one space area not containing an oil pump by at least one fixed partition, and each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump, so that the distribution of fuel in the fuel tank can be adjusted by controlling the opening or closing of the connecting port on the fixed partition, and the flexible change of the fuel tank volume can be achieved. Among them, the embodiment of the present invention monitors the remaining oil in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving road conditions of the vehicle, and then determines whether to execute the preset fuel tank control strategy according to at least one of them, so that the corresponding preset fuel tank control strategy can be executed when necessary, and the connecting port on the fixed partition is controlled to be opened or closed, so as to concentrate the fuel in the variable capacity fuel tank to the space area containing the oil pump, solve the possible problems of insufficient oil supply, oil and gas leakage, overheating of the oil pump, and improve the 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0053] Figure 1 The structure of the variable capacity fuel tank provided by the embodiment of the present invention is schematically shown. Figure 1 ;

[0054] Figure 2 The structure of the variable capacity fuel tank provided by the embodiment of the present invention is schematically shown. Figure 2 ;

[0055] Figure 3 The structure of the variable capacity fuel tank provided by the embodiment of the present invention is schematically shown. Figure 3 ;

[0056] Figure 4 The structure of the variable capacity fuel tank provided by the embodiment of the present invention is schematically shown. Figure 4 ;

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

[0058] Figure 6 is a flow chart of a control method for a variable capacity fuel tank provided by an embodiment of the present invention;

[0059] Figure 7 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. Guide 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 is described more clearly below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the effects of the present application, but are not intended to limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made 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, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

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

[0066] In the description of the present 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" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

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

[0069] First, in order to solve the defects of the traditional fuel tank and support the intelligent control of the fuel tank by the present application, the embodiment of the present invention designs a variable capacity fuel tank. At least one fixed partition is provided inside the fuel tank, and 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. Each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump, so that the distribution of fuel in the fuel tank can be adjusted by controlling the opening or closing of the connecting port on the fixed partition, and the flexible and variable capacity of the fuel tank can be achieved.

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

[0071] The 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 form a height difference at the bottom of the tank; the fixed partition 5 is fixed to the inside of the fuel tank body 1, and the inside of the fuel tank body 1 is divided into a low-position oil chamber 12 and a high-position oil chamber 11 by means of the height difference at the bottom of the tank; the lowest position of the low-position oil chamber 12 is lower than the lowest position of the high-position oil chamber 11; a connecting port 52 for connecting the low-position oil chamber 12 and the high-position oil chamber 11 is provided on the fixed partition 5; the movable gate 6 is movably connected to the fixed partition 5, and the connecting port 52 is opened or closed by a driving mechanism; the oil pump 2 is installed in the low-position oil chamber 12. Here, the low-position oil chamber 12 is a space area containing the oil pump, and the high-position oil chamber 11 is a space area 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 gathered and stored in the low-position 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 driving mechanism may include a driving motor 4, a transmission gear 8 and a transmission rack 7. The driving motor 4 is mounted outside the fuel tank body 1, the transmission gear 8 is mounted on the main shaft of the driving motor 4, the transmission rack 7 is mounted on the movable gate 6, and the transmission gear 8 is located inside the fuel tank body 1 and meshes with the transmission rack 7. The driving 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 to open or close the communication port 52. In this embodiment, the movable gate 6 is driven to open or close the communication port 52 through the transmission mode of the gear 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 (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 reciprocates in the up and down direction. When the movable gate plate 6 slides upward, the connecting port 52 is opened, and when the movable gate plate 6 moves downward, the connecting port 52 is closed.

[0075] It should be noted that in order to ensure the effectiveness of the fuel connection between the low-position oil chamber 12 and the high-position oil chamber 11, the position of the connecting port 52 needs to be 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 set on the fixed partition 5; or it may be a notch set on one side of the fixed partition 5, such as a notch set on the lower side of the fixed partition 5, or a notch set 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 relying on the fixed partition 5 to open or close the communication port 52. In some embodiments, see Figure 4 , a plurality of communication ports 52 are arranged on the fixed partition plate 5, and the plurality of communication ports 52 are arranged at different heights, and the communication port 52 at the lowest position is close to the bottom of the fuel tank body 1. When a plurality of communication ports 52 are arranged, an independent movable gate plate 6 can be arranged on each communication port, and an independent linear drive can be arranged for each movable gate plate 6, so that the movable gate plate on each communication port 52 can be opened or closed separately. For example, each movable gate plate 6 is pushed to close or open by its own electric push rod, so that the high-position communication port or the low-position communication port can be closed separately as needed.

[0077] In some embodiments, a travel switch 9 for limiting the opening of the movable gate 6 is provided on the fixed partition 5. At this time, the travel switch 9 is set in the direction of opening of the movable gate. When the movable gate 6 is opened to the limit position, the travel switch 9 is touched, and then the drive motor 4 stops running, avoiding the risk of the movable gate 6 and the slideway 51 of the fixed partition 5 being separated, which is a protective effect on the movement of the movable gate 6. The travel switch 9 and the drive motor 4 are connected by 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 travel switch 9, and the extension 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 resetting 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 It is a schematic diagram of an application scenario of a control method for a variable capacity fuel tank provided in 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 electronic control unit receives the remaining fuel in the fuel tank, the workload of the oil and gas recovery system, the driving road conditions and the vehicle angle, etc., analyzes and determines the appropriate fuel tank control strategy, and sends the fuel tank control strategy to the partition controller (i.e. Figures 1 to 4 The controller 3 in the fuel tank is used. The partition controller controls the actuator (such as each movable gate 6) according to the fuel tank control strategy to open or close the connecting port 52. In addition, the electronic controller unit can also control the suspension adjustment mechanism to cooperate and achieve adjustment. The instrument display can display the remaining fuel, the workload of the oil and gas recovery system, the capacity status of the fuel tank, etc.

[0080] Combine the following Figure 5 For application scenarios, refer to Figure 6 To describe the control method of the variable capacity fuel tank provided according to the exemplary embodiment of the present application. It should be noted that the above application scenarios are only shown to facilitate understanding of the spirit and principle of the present application, and the embodiments of the present application are not limited in this respect. On the contrary, the embodiments of the present application can be applied to any applicable scenario.

[0081] Combine the following 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 oil vapor recovery system of the vehicle, and the driving condition of the vehicle.

[0083] In this embodiment, the remaining oil volume can be represented by physical quantities such as the height and volume of the oil. Here, when the remaining oil volume is represented by the height of the oil, the height of the oil in the space area containing the oil pump can be detected, and the height can be used for intelligent control of the fuel tank. The remaining oil volume of the fuel tank can be detected by an oil volume sensor. The oil volume sensor is installed inside the fuel tank. It is a float sensor, mainly composed of a float and a variable resistor. When the oil volume in the fuel tank changes, the float will float up and down accordingly. The change in the position of the float will cause the resistance value of the variable resistor to change. The electronic controller unit of the vehicle will detect this resistance change and determine the oil volume in the fuel tank. It should be noted that in this embodiment, the oil volume sensor is arranged in the space area containing the oil pump, that is, the low-position oil chamber 12. In addition, since the present application is a variable capacity fuel tank, when the capacity of the fuel tank is different, the actual oil volume represented by the height of the oil is different. The actual oil volume displayed on the instrument panel can be obtained by correcting the height of the oil by the current volume 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 role 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 state 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 send 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, judging whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel volume, the workload and the driving road condition.

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

[0088] For example:

[0089] In some embodiments, when the remaining oil in the fuel tank is small, the range of fuel sloshing increases, the concentration of oil vapor is high, and the load of the oil vapor recovery system also increases. If the carbon canister is saturated with adsorption, there will be a risk of oil and gas leakage. Therefore, when the remaining oil is less than or equal to the first preset oil volume threshold and the workload is greater than the preset load threshold, the electronic controller unit can execute a certain preset fuel tank control strategy to concentrate the fuel in the variable capacity fuel tank to the space area containing the oil pump, thereby reducing the range of fuel sloshing, reducing the concentration of oil vapor, and avoiding oil and gas leakage.

[0090] In some embodiments, when the remaining fuel in the fuel tank is small, and the driving road condition is that there is a ramp within a preset distance ahead (it can be up or down slopes, or slopes that tilt left or right, and an angle threshold can be set here, and a road with an inclination angle greater than the angle threshold is determined as a ramp), the vehicle may pass through the ramp. Due to the tilt of the vehicle body, the fuel will all flow to one side of the fuel tank, resulting in the oil pump failing to suck up the fuel and the vehicle losing power. Therefore, when the remaining fuel is less than or equal to the second preset fuel threshold and it is determined that there is a ramp within the preset distance ahead, the electronic controller unit can control the opening or closing of the connecting port on the fixed partition by executing a certain preset fuel tank control strategy in advance, so as to concentrate the fuel in the variable capacity fuel tank to the space area containing the oil pump, thereby avoiding the situation where the oil pump fails to suck up the fuel.

[0091] In some embodiments, the car owner may be accustomed to filling up half a tank of gas, so there is no need for a fuel tank with too large a capacity. In this scenario, when the remaining amount of fuel in the fuel tank is small, if the capacity of the fuel tank is large, not only will the fuel utilization rate be reduced, but it may also cause the fuel pump to fail to suck up the oil, resulting in insufficient fuel supply. Therefore, the electronic controller unit can receive the user's target execution instruction when the remaining amount of fuel is less than or equal to the third preset fuel amount threshold, for example, it can be an instruction to reduce the capacity of the fuel tank. After receiving the target execution instruction, the electronic controller unit controls the opening or closing of the connecting port on the fixed partition by executing a certain preset fuel tank control strategy, and concentrates the fuel in the variable capacity fuel tank to the space area containing the fuel pump, so as to reduce the capacity of the fuel tank and improve the fuel utilization rate.

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

[0093] In addition, the first preset fuel level threshold, the second preset fuel level threshold and the third preset fuel level threshold can be the same value or different values. Usually, the value is less than 1 / 2 of the fuel tank. In the above different embodiments, the preset fuel tank control strategies can be the same or different, which is not limited in this embodiment.

[0094] Step S603, if the judgment result is to execute the preset fuel tank control strategy, then based on the preset fuel tank control strategy, the connecting port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the space 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 the preset fuel tank control strategy is executed, the communication ports on each fixed partition may be in an open state. When the preset fuel tank control strategy is executed, the fuel in each space area not including the fuel pump may be first concentrated into the space area including the fuel pump, and then each communication port may be closed, thereby concentrating the fuel in the variable capacity fuel tank into the space area including the fuel pump, while reducing the volume of the fuel tank.

[0097] In some embodiments, before executing the preset fuel tank control strategy, the connecting ports on some fixed partitions are in an open state, and the connecting ports on some fixed partitions are in a closed state. When the connecting ports on the fixed partitions are in a closed state, there is usually no fuel in the corresponding space area that does not contain the oil pump. The preset fuel tank control strategy can be to concentrate the fuel in the space area that does not contain the oil pump corresponding to the state where the connecting ports are open to the space area that contains the oil pump, and then close each connecting port, so as to realize the concentration of the fuel in the variable capacity fuel tank to the space area that contains the oil pump, while reducing the volume of the fuel tank. In addition, if the connecting ports on the fixed partitions are in a closed state, there is fuel in the corresponding space area that does not contain the oil pump, the preset fuel tank control strategy can also be to control the connecting ports on the fixed partitions to be opened, concentrate the fuel in the corresponding space area that does not contain the oil pump to the space area that contains the oil pump, and then close each connecting port, so as to realize the concentration of the fuel in the variable capacity fuel tank to the space area that contains the oil pump, while reducing the volume of the fuel tank.

[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 variable capacity fuel tank of the embodiment of the present invention is divided into a space area containing an oil pump and at least one space area not containing an oil pump by at least one fixed partition, and each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump, so that the distribution of fuel in the fuel tank can be adjusted by controlling the opening or closing of the connecting port on the fixed partition, and the flexible change of the fuel tank volume can be achieved. By monitoring the remaining oil in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving road conditions of the vehicle, the corresponding preset fuel tank control strategy can be executed when necessary to control the opening or closing of the connecting port on the fixed partition, so as to concentrate the fuel in the variable capacity fuel tank to the space area containing the oil pump, solve the possible problems of insufficient oil supply, oil and gas leakage, overheating of the oil pump, and improve the vehicle performance.

[0100] In the above embodiments, the conditions and scenarios of the control method of the variable capacity fuel tank when executing the preset fuel tank control strategy are introduced. 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 volume is less than or equal to a fourth preset oil volume threshold, where the fourth preset oil volume threshold is determined according to the lowest lower edge of the communication port;

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

[0104] If the remaining fuel volume is greater than a fourth preset fuel volume threshold, the posture of the vehicle is adjusted, and at the same time, the connecting port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump.

[0105] Here, the fourth preset oil volume threshold value can be determined according to the lower edge of the lowest connecting opening of each fixed partition. The lower edge heights of the lowest connecting openings 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, when concentrating the fuel in the left space area to the space area containing the fuel pump, the connecting port on the left fixed partition can be controlled to open first, and then the chassis suspension of the vehicle can be controlled to tilt the vehicle to the right, so that the fuel on the left can flow to the space area containing the fuel pump, and then the connecting port on the left fixed partition can be controlled to close, thereby reducing the volume of the fuel tank and preventing the fuel from being dispersed. The same is true when concentrating the fuel in the right space area to the space area containing the fuel pump.

[0106] In some embodiments, the space area containing the oil pump may have too much fuel. In order not to affect the failure of the integrated valve of the fuel tank and avoid the failure of the carbon canister caused by the oil inflow of the oil and gas recovery system, the electronic control unit can also execute the preset fuel dispersion strategy when the remaining oil is greater than or equal to the fifth preset oil threshold, open the connecting port on the fixed partition, and lower the oil level. The fifth preset oil threshold here is usually greater than the first, second, third, and fourth preset oil thresholds mentioned above.

[0107] Exemplarily, when a small-volume fuel tank is used (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 level drops to less than the fifth preset oil level threshold, controls the connecting ports on the fixed partition to close, thereby protecting the fuel tank.

[0108] Alternatively, before the vehicle passes the ramp, the preset fuel tank control strategy is executed to concentrate the fuel in the variable capacity fuel tank to the space area containing the fuel pump to ensure smooth passage through the ramp. After passing the ramp, when the remaining fuel volume is greater than or equal to the fifth preset fuel volume threshold, the preset fuel dispersion strategy is executed to open the connecting port on the fixed partition to lower the oil level. Alternatively, after passing the ramp, the preset fuel dispersion strategy is directly executed to control the connecting port on the fixed partition to open and restore to a large capacity fuel tank.

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

[0110] (1) By dividing the interior of the fuel tank into two low-position oil chambers and a high-position oil chamber 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, so that 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 around the oil pump has a certain depth, so that even when the fuel is at a low level, the oil pump can still be cooled, thereby avoiding the risk of damage to the oil pump due to overheating due to low oil level, increasing the service life of the oil pump, and reducing the risk of vehicle driving failure.

[0112] (3) When passing 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 order of execution of the steps in the above embodiment does not necessarily 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 embodiment 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 arranged 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 connecting adjacent space areas not containing an oil pump and space areas containing an oil pump is arranged on each fixed partition.

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

[0116] An acquisition module 71 is used to acquire the remaining fuel volume 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 judgment module 72, used to judge whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel volume, the workload and the driving road condition;

[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 space area containing the oil pump.

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

[0120] If the remaining fuel volume is less than or equal to the first preset fuel volume threshold, and the workload is greater than the 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 volume is less than or equal to the second preset fuel volume 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 volume is less than or equal to the third preset fuel volume threshold, whether to execute the preset fuel tank control strategy is determined according to 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 volume is less than or equal to a fourth preset oil volume threshold, where the fourth preset oil volume threshold is determined according to the lowest lower edge of the communication port;

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

[0128] If the remaining fuel volume is greater than a fourth preset fuel volume threshold, the posture of the vehicle is adjusted, and at the same time, the connecting port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the space area containing the fuel pump.

[0129] As a possible implementation, after determining whether to execute the preset fuel tank control strategy according to at least one of the remaining fuel volume, the workload and the driving road condition, 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, based on the preset fuel dispersion strategy, the connecting port on the fixed partition is controlled to be opened or closed to disperse the fuel in the spatial area containing the oil pump to the variable capacity fuel tank.

[0132] As a possible implementation manner, the control module 73 is specifically used for:

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

[0134] The preset fuel dispersion strategies include:

[0135] The connecting 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 connecting port on the fixed partition is controlled to be closed.

[0136] The variable capacity fuel tank of the embodiment of the present invention is divided into a space area containing an oil pump and at least one space area not containing an oil pump by at least one fixed partition, and each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump, so that the distribution of fuel in the fuel tank can be adjusted by controlling the opening or closing of the connecting port on the fixed partition, and the flexible change of the fuel tank volume can be achieved. By monitoring the remaining oil in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving road conditions of the vehicle, the corresponding preset fuel tank control strategy can be executed when necessary to control the opening or closing of the connecting port on the fixed partition, so as to concentrate the fuel in the variable capacity fuel tank to the space area containing the oil pump, solve the possible problems of insufficient oil supply, oil and gas leakage, overheating of the oil pump, and improve the vehicle performance.

[0137] Figure 8 FIG. 8 is a schematic diagram of a vehicle 80 provided by an 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 in the above-mentioned control method embodiments of the variable capacity fuel tank are implemented, such as Figure 6 Alternatively, when the controller 81 executes the computer program 83, the functions of each module / unit 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 may be divided into one or more modules / units, which are stored in the memory 82 and executed by the controller 81 to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 83 in the vehicle 80. For example, the computer program 83 may be divided into an acquisition module 71, a judgment module 72, and a control module 73 (modules in a virtual device), and the specific functions of each module are as follows:

[0139] An acquisition module 71 is used to acquire the remaining fuel volume 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 judgment module 72, used to judge whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel volume, the workload and the driving road condition;

[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 space area containing the oil 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 only 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 those 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 controllers, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general controller may be a microcontroller or any conventional controller, etc.

[0144] The memory 82 may be an internal storage unit of the vehicle 80, such as a hard disk or memory of the vehicle 80. The memory 82 may also be an external storage device of the vehicle 80, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the vehicle 80. Further, the memory 82 may include both an internal storage unit and an external storage device of the vehicle 80. 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 to be output.

[0145] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be 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 in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in 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, which will not be repeated here.

[0146] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be 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 only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, 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 separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0150] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of 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 processes 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 the computer program can implement the steps of the above-mentioned various method embodiments when executed by the controller. Among them, 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. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A control method for a variable capacity fuel tank, characterized in that: At least one fixed partition is arranged inside the variable capacity fuel tank, and 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, and each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump; The method comprises: Obtaining the remaining fuel volume in the variable capacity fuel tank, the workload of the oil vapor recovery system of the vehicle, and the driving condition of the vehicle; determining whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel amount, the workload, and the driving road condition; If the judgment result is to execute the preset fuel tank control strategy, then based on the preset fuel tank control strategy, the connecting port on the fixed partition is controlled to be opened or closed to concentrate the fuel in the variable capacity fuel tank into the space 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 according to at least one of the remaining fuel amount, the workload and the driving road condition includes: If the remaining fuel volume is less than or equal to a first preset fuel volume 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 according to at least one of the remaining fuel amount, the workload and the driving road condition includes: If the remaining fuel volume is less than or equal to a second preset fuel volume 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 according to at least one of the remaining fuel amount, the workload and the driving road condition includes: If the remaining fuel volume is less than or equal to a third preset fuel volume threshold, whether to execute the preset fuel tank control strategy is determined according to 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 volume is less than or equal to a fourth preset oil volume threshold, wherein the fourth preset oil volume threshold is determined according to the lowest lower edge of the communication port; If the remaining fuel volume is less than or equal to the fourth preset fuel volume threshold, controlling the communication port on the fixed partition to be opened or closed, so as to concentrate the fuel in the variable capacity fuel tank into the space area including the fuel pump; If the remaining fuel volume is greater than the fourth preset fuel 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 fuel 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 according to at least one of the remaining fuel volume, the workload and the driving road condition, the method further includes: If the judgment result is that the preset fuel tank control strategy is not to be executed, judging 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, then based on the preset fuel dispersion strategy, the connecting port on the fixed partition is controlled to be opened or closed 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 volume includes: If the remaining fuel amount is greater than or equal to the fifth preset fuel amount threshold, the preset fuel dispersion strategy is executed; if the remaining fuel amount is less than the fifth preset fuel amount threshold, the preset fuel dispersion strategy is not executed; The preset fuel dispersion strategy includes: The connecting port on the fixed partition is controlled to be opened, and after the remaining oil amount decreases to be less than the fifth preset oil amount threshold, the connecting 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 arranged inside the variable capacity fuel tank, and 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, and each fixed partition is provided with a connecting port connecting the adjacent space area not containing an oil pump and the space area containing an oil pump; The device comprises: an acquisition module, used to acquire the remaining oil 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; a judgment module, configured to judge whether to execute a preset fuel tank control strategy according to at least one of the remaining fuel volume, 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 to the space 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, characterized in that: 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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