An anti-backflow control device, method, system and vehicle

Abstract

An anti-backflow oil control device, method, system and vehicle provided by an embodiment of the present application include: a control valve disposed at a position close to the auxiliary fuel tank at one end of the connecting oil pipe between the main fuel tank and the auxiliary fuel tank; the control valve is in an open state all the time; the control valve switches to a closed state when receiving a closing instruction. By obtaining the vehicle condition information and the remaining fuel quantity in the main fuel tank; detecting the uphill angle of the current position of the vehicle based on the remaining fuel quantity in the main fuel tank at present; controlling the control valve to close according to the uphill angle of the current position or when the vehicle condition information is a collision condition. It can effectively avoid the situation that fuel in the main fuel tank flows back to the auxiliary fuel tank under special working conditions of the vehicle, resulting in insufficient fuel supply in the main fuel tank under special working conditions.

Description

Technical Field

[0001] The present application relates to the technical field of automobiles, and particularly to an anti-backflow oil control device, method, system and vehicle. Background Art

[0002] Currently, with the continuous improvement of people's living standards, more and more people choose self-driving tours as a way to travel. Therefore, the endurance of vehicles has also attracted more and more attention.

[0003] In the prior art, the fuel reserve of vehicles is increased by adding an auxiliary fuel tank, so as to increase the endurance of vehicles. Currently, for this dual-fuel tank system that increases the endurance by adding an auxiliary fuel tank, a layout scheme with the main fuel tank in the front and the auxiliary fuel tank in the rear is mostly adopted. When the vehicle goes uphill, the fuel in the main fuel tank will flow back to the auxiliary fuel tank, resulting in some fuel being unusable under special working conditions. Especially under the working condition of less fuel and a relatively large uphill slope, some fuel will flow back to the auxiliary fuel tank, resulting in insufficient fuel in the main fuel tank, thus leading to the situation that the main fuel tank supplies insufficient fuel to the engine under this special working condition.

[0004] In order to solve the situation that under special working conditions, some fuel will flow back to the auxiliary fuel tank, resulting in insufficient fuel in the main fuel tank, it is necessary to develop an anti-backflow oil control device and method to solve the problem that in the existing dual-fuel tank system, the fuel in the main fuel tank flows back to the auxiliary fuel tank under special working conditions, resulting in insufficient fuel in the main fuel tank, and thus the situation that the main fuel tank supplies insufficient fuel to the engine occurs. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide an anti-backflow oil control device, method, system and vehicle to overcome or at least partially solve the above problems.

[0006] In the first aspect of the embodiments of the present application, an anti-backflow oil control device is provided, which is applied to a dual-fuel tank system. The dual-fuel tank system includes: a main fuel tank and an auxiliary fuel tank, and the main fuel tank and the auxiliary fuel tank are connected by a main-auxiliary fuel tank connecting oil pipe; the device includes:

[0007] A control valve, which is arranged at one end of the main-auxiliary fuel tank connecting oil pipe close to the auxiliary fuel tank;

[0008] The control valve is in an open state all the time; the control valve switches to a closed state when receiving a closing instruction.

[0009] Optionally, it further includes:

[0010] A horizontal position sensor, which is used to detect the uphill angle of the current position of the vehicle;

[0011] A main fuel tank liquid level sensor, which is used to detect the remaining fuel quantity in the main fuel tank currently;

[0012] When both the uphill angle and the current remaining fuel quantity meet the closing conditions, a closing instruction is sent to the control valve.

[0013] Optionally, it further includes:

[0014] A collision sensor for detecting the vehicle condition information of the vehicle;

[0015] When the vehicle condition information is a collision condition, a closing instruction is sent to the control valve.

[0016] In a second aspect of the embodiments of the present application, a method for implementing the anti-backflow control device as described in the first aspect of the embodiments of the present application is provided, which is applied to a dual fuel tank system. The method includes:

[0017] Obtain the vehicle condition information of the vehicle and the current remaining fuel quantity of the main fuel tank;

[0018] Based on the current remaining fuel quantity of the main fuel tank, detect the uphill angle of the current position of the vehicle;

[0019] According to the uphill angle of the current position, or when the vehicle condition information of the vehicle is a collision condition, control the control valve to close.

[0020] Optionally, the detecting the uphill angle of the current position of the vehicle based on the current remaining fuel quantity of the main fuel tank includes:

[0021] When the current remaining fuel quantity of the main fuel tank is less than the first preset fuel quantity, determine whether the current position of the vehicle is uphill; or

[0022] When the current remaining fuel quantity of the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, determine whether the current position of the vehicle is uphill; or

[0023] When the current remaining fuel quantity of the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, determine whether the current position of the vehicle is uphill;

[0024] When the current position of the vehicle is uphill, detect the uphill angle of the current position of the vehicle;

[0025] The second preset fuel quantity is greater than the first preset fuel quantity and less than the third preset fuel quantity.

[0026] Optionally, the detecting the uphill angle of the current position of the vehicle when the current position information of the vehicle is uphill includes:

[0027] When the current remaining fuel volume in the main fuel tank is less than the first preset fuel volume, detect whether the uphill angle is greater than or equal to the first preset angle; or

[0028] When the current remaining fuel volume in the main fuel tank is greater than or equal to the first preset fuel volume and less than the second preset fuel volume, detect whether the uphill angle is greater than or equal to the second preset angle; or

[0029] When the current remaining fuel volume in the main fuel tank is greater than or equal to the second preset fuel volume and less than the third preset fuel volume, detect whether the uphill angle is greater than or equal to the third preset angle;

[0030] Control the control valve to close according to the uphill angle at the current position;

[0031] The second preset angle is greater than the third preset angle and less than the first preset angle.

[0032] Optionally, the controlling the control valve to close according to the uphill angle at the current position includes:

[0033] When the current remaining fuel volume in the main fuel tank is less than the first preset fuel volume and the uphill angle is greater than or equal to the first preset angle, control the control valve to close; or

[0034] When the current remaining fuel volume in the main fuel tank is greater than or equal to the first preset fuel volume and less than the second preset fuel volume, and the uphill angle is greater than or equal to the second preset angle, control the control valve to close; or

[0035] When the current remaining fuel volume in the main fuel tank is greater than or equal to the second preset fuel volume and less than the third preset fuel volume, and the uphill angle is greater than or equal to the third preset angle, control the control valve to close.

[0036] Optionally, it further includes:

[0037] When the uphill angle is less than the fourth preset angle, control the control valve to open.

[0038] In the third aspect of the embodiments of the present application, an anti-backflow fuel control system is provided, and the system includes:

[0039] An acquisition module, configured to acquire the vehicle condition information of the vehicle and the current remaining fuel volume in the main fuel tank;

[0040] A detection module, configured to detect the uphill angle at the current position of the vehicle based on the current remaining fuel volume in the main fuel tank;

[0041] A control module, configured to control a control valve to close according to the uphill angle of the current position, or in the case that the vehicle condition information of the vehicle is a vehicle condition of a collision.

[0042] Optionally, the detecting module is configured to detect the uphill angle of the current position of the vehicle based on the current remaining fuel quantity of the main fuel tank, and includes:

[0043] A first judgment sub-module, configured to judge whether the current position of the vehicle is uphill in the case that the current remaining fuel quantity of the main fuel tank is less than a first preset fuel quantity;

[0044] A second judgment sub-module, configured to judge whether the current position of the vehicle is uphill in the case that the current remaining fuel quantity of the main fuel tank is greater than or equal to the first preset fuel quantity and less than a second preset fuel quantity;

[0045] A third judgment sub-module, configured to judge whether the current position of the vehicle is uphill in the case that the current remaining fuel quantity of the main fuel tank is greater than or equal to the second preset fuel quantity and less than a third preset fuel quantity.

[0046] Optionally, the detecting the uphill angle of the current position of the vehicle in the case that the current position information of the vehicle is uphill includes:

[0047] The first judgment sub-module includes:

[0048] A first detection sub-unit, configured to detect whether the uphill angle is greater than or equal to a first preset angle in the case that the current remaining fuel quantity of the main fuel tank is less than the first preset fuel quantity;

[0049] The second judgment sub-module includes:

[0050] A second detection sub-unit, configured to detect whether the uphill angle is greater than or equal to a second preset angle in the case that the current remaining fuel quantity of the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity;

[0051] The third judgment sub-module includes:

[0052] A third detection sub-unit, configured to detect whether the uphill angle is greater than or equal to a third preset angle in the case that the current remaining fuel quantity of the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity.

[0053] Optionally, the control module includes:

[0054] A control sub-unit, configured to control the control valve to open in the case that the uphill angle is less than a fourth preset angle.

[0055] In a fourth aspect of the embodiments of the present application, a vehicle is provided, and the vehicle includes an anti-backflow fuel control system as described in the third aspect of the embodiments of the present application.

[0056] The present application has the following advantages:

[0057] The anti-backflow fuel control device provided by the embodiments of the present application includes: a control valve, which is arranged at one end close to the auxiliary fuel tank on the main-auxiliary fuel tank connecting pipeline; the control valve is in an open state all the time; the control valve switches to a closed state when receiving a closing instruction. The embodiments of the present application also provide an anti-backflow fuel control method, including: first, obtaining the vehicle condition information of the vehicle and the current remaining fuel quantity in the main fuel tank; then, based on the current remaining fuel quantity in the main fuel tank, detecting the uphill angle of the current position of the vehicle; finally, according to the uphill angle of the current position, or in the case that the vehicle condition information of the vehicle is a collision condition, controlling the control valve to close. By arranging a control valve at one end close to the auxiliary fuel tank on the main-auxiliary fuel tank connecting pipeline between the main fuel tank and the auxiliary fuel tank, and controlling the control valve to close according to the remaining fuel quantity in the main fuel tank and the uphill angle of the current position of the vehicle or the vehicle condition information of the vehicle, the present application can effectively avoid the situation that the fuel in the main fuel tank flows back to the auxiliary fuel tank under special working conditions, resulting in insufficient fuel supply in the main fuel tank under special working conditions. Description of the Drawings

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 It is a schematic diagram of an anti-backflow fuel control device provided by the embodiments of the present application;

[0060] Figure 2 It is a flowchart of the steps of an anti-backflow fuel control method provided by the embodiments of the present application;

[0061] Figure 3 It is a schematic diagram of an anti-backflow fuel control system provided by the embodiments of the present application.

[0062] Description of the reference numerals: 1, main fuel tank; 2, auxiliary fuel tank; 3, main fuel tank level sensor; 4, auxiliary fuel tank level sensor; 5, main-auxiliary fuel tank connecting pipeline; 6, fuel filling pipe; 7, main-auxiliary fuel tank ventilation pipe; 8, fuel vapor transmission pipeline; 9, carbon canister; 10, fuel filling ventilation pipe; 11, control valve; 12, vehicle controller; 13, vehicle sensor assembly. Detailed Embodiments

[0063] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0064] Currently, the arrangement of vehicles with auxiliary fuel tanks is divided into the following two cases: 1. The main and auxiliary fuel tanks are refueled in parallel, and the fuel filling pipe adopts a bifurcated structure to refuel the main and auxiliary fuel tanks. The fuel in the auxiliary fuel tank is diffracted and sucked into the main fuel tank by the fuel pump in the main fuel tank, and the fuel pump in the main fuel tank supplies fuel to the engine;

[0065] 2. The main and auxiliary fuel tanks are refueled separately through two fuel filling ports, and the connection between the main / auxiliary fuel tank and the engine is switched by a manual / automatic switching valve; leveling is achieved by using the principle of communicating vessels, and the two fuel tanks are independently refueled through two fuel filling pipes;

[0066] However, currently, vehicles using a dual-fuel tank system mostly adopt an arrangement scheme with the main fuel tank in the front and the auxiliary fuel tank in the rear. When the vehicle goes uphill, the fuel in the main fuel tank will flow back to the auxiliary fuel tank, resulting in some fuel being unusable under special working conditions. Especially when the fuel quantity is small and the uphill slope is large, some fuel will flow back to the auxiliary fuel tank, causing the fuel in the main fuel tank to be insufficient, thus resulting in a situation where the main fuel tank supplies insufficient fuel to the engine under such special working conditions.

[0067] The embodiment of the present application provides an anti-backflow control device. Refer to Figure 1 , Figure 1 which is a schematic diagram of an anti-backflow control device provided by the embodiment of the present application. As shown in Figure 1 , it is applied to a dual-fuel tank system, and the dual-fuel tank system includes: a main fuel tank 1 and an auxiliary fuel tank 2, and the main fuel tank 1 and the auxiliary fuel tank 2 are connected by a main-auxiliary fuel tank connection oil pipe 5; the device includes:

[0068] A control valve 11, arranged at one end of the main-auxiliary fuel tank connection oil pipe 5 close to the auxiliary fuel tank 2;

[0069] The control valve 11 is in an open state; the control valve 11 switches to a closed state when receiving a closing instruction.

[0070] Furthermore, the device further includes: a vehicle sensor assembly 13 and a fuel tank sensor assembly. The fuel tank sensor assembly includes a main fuel tank liquid level sensor 3 and an auxiliary fuel tank liquid level sensor 4;

[0071] The vehicle sensor assembly 13 includes a horizontal position sensor and a collision sensor. The horizontal position sensor is used to detect the uphill angle of the current vehicle position, and the collision sensor is used to detect the vehicle condition information. The vehicle sensor assembly 13 is electrically connected to the vehicle controller 12, and the vehicle controller 12 is configured to receive the detection signals sent by the vehicle sensor assembly 13 and send a closing instruction to the control valve 11 based on the detection signals.

[0072] The main fuel tank level sensor 3 is used to detect the remaining fuel quantity in the main fuel tank 1 currently; the auxiliary fuel tank level sensor 4 is used to detect the remaining fuel quantity in the auxiliary fuel tank 2 currently. The main fuel tank level sensor 3 and the auxiliary fuel tank level sensor 4 are electrically connected to the vehicle controller 12, and the vehicle controller 12 is configured to receive the detection signals of the main fuel tank level sensor 3 and the auxiliary fuel tank level sensor 4.

[0073] Specifically, in the embodiment of the present application, the horizontal position sensor is used to detect the uphill angle of the current vehicle position. The main fuel tank level sensor 3 is used to detect the remaining fuel quantity in the main fuel tank 1 currently. When both the uphill angle and the remaining fuel quantity meet the closing conditions, after the vehicle controller 12 receives the detection signals of the horizontal position sensor and the main fuel tank level sensor 3, it sends a closing instruction to the control valve 11. Since the control valve 11 is in the normally open state, after receiving the closing instruction sent by the vehicle controller 12, it switches to the closed state. This is to prevent the fuel in the main fuel tank 1 from flowing back into the auxiliary fuel tank 2 under special working conditions, resulting in insufficient fuel supply in the main fuel tank 1.

[0074] In addition, in the embodiment of the present application, the collision sensor is used to detect the vehicle condition information. When the vehicle condition information is a collision condition, it sends the detection signal to the vehicle controller 12. After the vehicle controller 12 receives the detection signal sent by the collision sensor, it sends a closing instruction to the control valve 11. After the control valve 11 receives the closing instruction sent by the vehicle controller 12, it switches to the closed state. This is to prevent the fuel leakage from occurring in the auxiliary fuel tank 2 due to the breakage of the connecting oil pipe 5 between the main and auxiliary fuel tanks after the vehicle collides. In practical applications, the special working conditions are the working conditions when the remaining fuel quantity in the main fuel tank 1 is less and the uphill angle of the current vehicle position is large, or the vehicle condition information is a collision condition.

[0075] In the embodiment of the present application, the auxiliary fuel tank level sensor 4 is used to detect the remaining fuel quantity in the auxiliary fuel tank 2 currently and send the detected remaining fuel quantity signal to the vehicle controller 12, so that the vehicle controller 12 can determine whether refueling is needed based on the remaining fuel quantity in the auxiliary fuel tank 2.

[0076] In practical applications, the bottom surface of the auxiliary fuel tank 2 in the dual fuel tank system is higher than the liquid level height of the rated volume of the main fuel tank 1. A main and auxiliary fuel tank ventilation pipe 7 is provided at the top of the main fuel tank 1 and the top side of the auxiliary fuel tank 2. The top of the main fuel tank 1 and the top of the auxiliary fuel tank 2 are connected to a carbon canister 9 through a fuel vapor transmission pipeline 8. A fuel filling pipe 6 is provided on one side of the auxiliary fuel tank 2 away from the main and auxiliary fuel tank connection oil pipe 5. The fuel filling pipe 6 is connected to the auxiliary fuel tank 2 through a fuel filling ventilation pipe 10.

[0077] Based on the same inventive concept as the anti-backflow control device provided in the embodiments of the present application, the embodiments of the present application provide an anti-backflow control method, as Figure 2 shown, which is a flowchart of the steps of an anti-backflow control method provided in the embodiments of the present application. Referring to Figure 2 , the method includes:

[0078] Step S100, obtain the vehicle condition information of the vehicle and the current remaining fuel quantity in the main fuel tank;

[0079] In the embodiments of the present application, the vehicle condition information of the vehicle is detected by a collision sensor. In practical applications, the collision sensor mainly detects whether a traffic accident of vehicle collision occurs. The remaining fuel quantity in the main fuel tank 1 is detected by the main fuel tank liquid level sensor 3. The collision sensor and the main fuel tank liquid level sensor 3 send the detection signals to the vehicle controller 12.

[0080] Step S200, based on the current remaining fuel quantity in the main fuel tank, detect the uphill angle of the current position of the vehicle;

[0081] In this step, after the vehicle controller 12 obtains the detection signal of the current remaining fuel quantity in the main fuel tank 1 sent by the main fuel tank liquid level sensor 3, the uphill angle of the current position of the vehicle is detected by a horizontal position sensor, and the detected uphill angle signal of the current position of the vehicle is sent to the vehicle sensor 12.

[0082] Step S300, according to the uphill angle of the current position, or in the case where the vehicle condition information of the vehicle is a collision condition, control the control valve to close.

[0083] Further, the vehicle controller 12 determines the detection signal of the remaining fuel in the main fuel tank 1 sent by the main fuel tank level sensor 3 and the uphill angle signal of the current position of the vehicle detected by the horizontal position sensor. When the detection signals, i.e., the remaining fuel signal and the uphill angle signal, meet the closing conditions of the control valve 11, the vehicle controller 12 sends a closing instruction to the control valve 11. When the control valve 11 receives the closing instruction sent by the vehicle controller 12, it switches from the normally open state to the closed state. This is to prevent the fuel in the main fuel tank 1 from flowing back into the auxiliary fuel tank 2 under special working conditions, resulting in insufficient fuel supply in the main fuel tank 1. In practical applications, the special working conditions are those where the remaining fuel in the main fuel tank 1 is less and the uphill angle of the current position of the vehicle is large, or the current vehicle condition information is that the vehicle has collided.

[0084] In another embodiment of the present application, the vehicle controller 12 determines the current vehicle condition information sent by the collision sensor. When it is determined that the current vehicle condition is that the vehicle has collided, the vehicle controller 12 sends a closing instruction to the control valve 11. When the control valve 11 receives the closing instruction sent by the vehicle controller 12, it switches from the normally open state to the closed state. This is to prevent the fuel in the auxiliary fuel tank 2 from leaking due to the breakage of the connecting oil pipe 5 between the main and auxiliary fuel tanks after the vehicle has collided.

[0085] Specifically, in a specific embodiment of the present application, the above step S200, based on the remaining fuel in the main fuel tank, detects the uphill angle of the current position of the vehicle, specifically including:

[0086] When the remaining fuel in the main fuel tank 1 is less than the first preset fuel quantity, it is determined whether the current position of the vehicle is uphill;

[0087] In this step, the remaining fuel in the main fuel tank 1 is detected by the main fuel tank level sensor 3. In practical applications, the liquid level of the remaining fuel in the main fuel tank 1 detected by the main fuel tank level sensor 3 needs to be converted into the amount of the remaining fuel according to the size of the fuel tank. The specific conversion method is not limited in this application. When it is detected that the remaining fuel in the main fuel tank 1 is less than the first preset fuel quantity, it is determined whether the current position of the vehicle is uphill.

[0088] Or, when the remaining fuel in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, it is determined whether the current position of the vehicle is uphill;

[0089] Further, the remaining fuel in the main fuel tank 1 is detected by the main fuel tank level sensor 3. When it is detected that the remaining fuel in the main fuel tank 1 is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, it is determined whether the current position of the vehicle is uphill;

[0090] Or, when the current remaining fuel quantity in the main fuel tank is greater than or equal to a second preset fuel quantity and less than a third preset fuel quantity, determine whether the current position of the vehicle is an uphill slope; further, detect the current remaining fuel quantity in the main fuel tank 1 through the main fuel tank liquid level sensor 3, and when it is detected that the current remaining fuel quantity in the main fuel tank 1 is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, determine whether the current position of the vehicle is an uphill slope; in practical applications, the second preset fuel quantity is greater than the first preset fuel quantity and less than the third preset fuel quantity.

[0091] When the current position of the vehicle is an uphill slope, detect the uphill slope angle of the current position of the vehicle.

[0092] Further, in the embodiments of the present application, when it is detected that the angle of the current vehicle position is greater than or equal to a preset angle, it indicates that the current position where the vehicle is located is an uphill slope, and the uphill slope angle of the current position is further detected through the horizontal position sensor.

[0093] In the embodiments of the present application, when the current position of the vehicle is an uphill slope, detecting the uphill slope angle of the current position of the vehicle further includes:

[0094] When the current remaining fuel quantity in the main fuel tank is less than the first preset fuel quantity, detect whether the uphill slope angle is greater than or equal to the first preset angle;

[0095] Further, when the main fuel tank liquid level sensor 3 detects that the current remaining fuel quantity in the main fuel tank 1 is less than the first preset fuel quantity, detect whether the uphill slope angle of the current position of the vehicle is greater than or equal to the first preset angle through the horizontal position sensor.

[0096] Or, when the current remaining fuel quantity in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, detect whether the uphill slope angle is greater than or equal to the second preset angle;

[0097] Further, when the main fuel tank liquid level sensor 3 detects that the current remaining fuel quantity in the main fuel tank 1 is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, detect whether the uphill slope angle is greater than or equal to the second preset angle through the horizontal position sensor.

[0098] Or, when the current remaining fuel quantity in the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, detect whether the uphill slope angle is greater than or equal to the third preset angle.

[0099] Further, when the main fuel tank level sensor 3 detects that the current remaining fuel in the main fuel tank 1 is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, the uphill angle is detected by the horizontal position sensor to determine whether it is greater than or equal to the third preset angle. In practical applications, the second preset angle is greater than the third preset angle and less than the first preset angle.

[0100] Control the control valve to close according to the uphill angle of the current position.

[0101] Further, in the embodiment of the present application, controlling the control valve to close according to the uphill angle of the current position specifically includes:

[0102] When the current remaining fuel in the main fuel tank 1 is less than the first preset fuel quantity and the uphill angle is greater than or equal to the first preset angle, control the control valve 11 to close; or

[0103] When the current remaining fuel in the main fuel tank 1 is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, and the uphill angle is greater than or equal to the second preset angle, control the control valve 11 to close; or

[0104] When the current remaining fuel in the main fuel tank 1 is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, and the uphill angle is greater than or equal to the third preset angle, control the control valve 11 to close.

[0105] In the embodiment of the present application, by detecting the vehicle condition information of the vehicle or the current remaining fuel in the main fuel tank, and the uphill angle of the current position of the vehicle, when the vehicle condition information of the vehicle meets the vehicle condition of a collision or the current remaining fuel in the main fuel tank and the uphill angle meet the closing condition, control the control valve to close, so as to prevent the fuel in the main fuel tank from flowing back to the auxiliary fuel tank under special working conditions, resulting in insufficient fuel supply in the main fuel tank, and at the same time avoid the fuel leakage in the auxiliary fuel tank caused by the breakage of the connecting oil pipe between the main and auxiliary fuel tanks when the vehicle collides.

[0106] In a preferred embodiment of the present application, after the control valve 11 is closed, the horizontal position sensor continuously detects the uphill angle of the current position of the vehicle. When the uphill angle is less than the fourth preset angle, the vehicle controller 12 sends an opening instruction to the control valve 11, and the control valve 11 switches to the open state after receiving the opening instruction. This prevents the control valve 11 from remaining in the closed state all the time, resulting in the inability to timely transport the fuel in the auxiliary fuel tank 2 to the main fuel tank 1 when the fuel in the main fuel tank 1 is insufficient.

[0107] Next, the anti-backflow control method of the present application will be described in detail with specific examples as follows: In practical applications, to ensure the accuracy of the control method, that is, to accurately control the fuel in the main fuel tank 1 to flow back to the auxiliary fuel tank 2, the present application sets the relationship between the remaining fuel quantity and the uphill angle such that when the remaining fuel quantity is relatively large, the uphill angle needs to be small, and when the remaining fuel quantity is small, the uphill angle needs to be large.

[0108] When the remaining fuel quantity in the main fuel tank 1 is less than 10L, it is judged whether the uphill angle at the current position of the vehicle is greater than or equal to 5°. If it is greater than or equal to 5°, it indicates that the current position of the vehicle is uphill at this time.

[0109] Or, when the remaining fuel quantity in the main fuel tank 1 is greater than or equal to 10L and less than 20L, it is judged whether the uphill angle at the current position of the vehicle is greater than or equal to 5°. If it is greater than or equal to 5°, it indicates that the current position of the vehicle is uphill at this time.

[0110] Or, when the remaining fuel quantity in the main fuel tank 1 is greater than or equal to 20L and less than 35L, it is judged whether the uphill angle at the current position of the vehicle is greater than or equal to 5°. If it is greater than or equal to 5°, it indicates that the current position of the vehicle is uphill at this time.

[0111] Further, when the current position of the vehicle is uphill, the uphill angle at the current position of the vehicle is detected. Specifically, it includes:

[0112] When the remaining fuel quantity in the main fuel tank 1 is less than 10L, it is detected whether the uphill angle is greater than or equal to 20°;

[0113] Or, when the remaining fuel quantity in the main fuel tank 1 is greater than or equal to 10L and less than 20L, it is detected whether the uphill angle is greater than or equal to 15°;

[0114] Or, when the remaining fuel quantity in the main fuel tank 1 is greater than or equal to 20L and less than 35L, it is detected whether the uphill angle is greater than or equal to 10°.

[0115] According to the uphill angle at the current position, the control valve 11 is controlled to close.

[0116] Further, controlling the control valve 11 to close according to the uphill angle at the current position specifically includes:

[0117] When the remaining fuel quantity in the main fuel tank 1 is less than 10L and the uphill angle is greater than or equal to 20°, the control valve 11 is controlled to close; or

[0118] When the current remaining fuel volume in the main fuel tank 1 is greater than or equal to 10L and less than 20L, and the uphill angle is greater than or equal to 15°, control the control valve 11 to close; or

[0119] When the current remaining fuel volume in the main fuel tank 1 is greater than or equal to 20L and less than 35L, and the uphill angle is greater than or equal to 10°, control the control valve 11 to close.

[0120] Further, when it is detected that the uphill angle is less than 5°, the vehicle controller 12 sends an opening instruction to the control valve 11, and after receiving the opening instruction, the control valve 11 switches to the open state. It should be noted that the specific angle values and specific remaining fuel volume values described in the above specific examples are only one exemplary numerical value of the embodiments of the present application, and the specific numerical values can be determined according to the actual situation.

[0121] It should be noted that for the method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present application are not limited by the described action sequence, because according to the embodiments of the present application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present application.

[0122] Based on the same inventive concept, the embodiments of the present application also provide an anti-backflow control system, and the system includes:

[0123] An acquisition module 401, configured to acquire the vehicle condition information of the vehicle and the current remaining fuel volume in the main fuel tank;

[0124] A detection module 402, configured to detect the uphill angle of the current position of the vehicle based on the current remaining fuel volume in the main fuel tank;

[0125] A control module 403, configured to control the control valve to close according to the uphill angle of the current position, or in the case where the vehicle condition information of the vehicle is a collision vehicle condition.

[0126] Optionally, for detecting the uphill angle of the current position of the vehicle based on the current remaining fuel volume in the main fuel tank, the detection module 402 includes:

[0127] A first judgment sub-module, configured to judge whether the current position of the vehicle is uphill when the current remaining fuel volume in the main fuel tank is less than a first preset fuel volume;

[0128] A second judgment sub-module, configured to judge whether the current position of the vehicle is an uphill slope when the current remaining fuel quantity in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity;

[0129] A third judgment sub-module, configured to judge whether the current position of the vehicle is an uphill slope when the current remaining fuel quantity in the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity.

[0130] Optionally, when the current position information of the vehicle is an uphill slope, detecting the uphill slope angle of the current position of the vehicle includes:

[0131] The first judgment sub-module includes:

[0132] A first detection sub-unit, configured to detect whether the uphill slope angle is greater than or equal to a first preset angle when the current remaining fuel quantity in the main fuel tank is less than the first preset fuel quantity;

[0133] The second judgment sub-module includes:

[0134] A second detection sub-unit, configured to detect whether the uphill slope angle is greater than or equal to a second preset angle when the current remaining fuel quantity in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity;

[0135] The third judgment sub-module includes:

[0136] A third detection sub-unit, configured to detect whether the uphill slope angle is greater than or equal to a third preset angle when the current remaining fuel quantity in the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity.

[0137] Optionally, the control module 403 includes:

[0138] A control sub-unit, configured to control the control valve to open when the uphill slope angle is less than a fourth preset angle.

[0139] An embodiment of the present application further provides a vehicle, and the vehicle includes the anti-backflow fuel control system as described above.

[0140] Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0141] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, apparatuses, or computer program products. Therefore, the embodiments of the present application can take the form of all-hardware embodiments, all-software embodiments, or embodiments combining software and hardware aspects. Moreover, the embodiments of the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) that contain computer-usable program code.

[0142] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate means for implementing the functions specified in one Figure 1 process or multiple processes and / or blocks Figure 1 or multiple blocks.

[0143] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implements the functions specified in one Figure 1 process or multiple processes and / or blocks Figure 1 or multiple blocks.

[0144] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one Figure 1 process or multiple processes and / or blocks Figure 1 or multiple blocks.

[0145] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0146] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0147] The above provides a detailed introduction to the anti-backflow oil control device, method, system and vehicle. Specific examples are used in this text to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An anti-backflow oil control device, characterized in that Applied to a dual fuel tank system, the dual fuel tank system includes a main fuel tank and a secondary fuel tank, and the main fuel tank and the secondary fuel tank are connected by a main-secondary fuel tank connecting oil pipe; the device includes: A control valve, arranged at one end of the main-secondary fuel tank connecting oil pipe close to the secondary fuel tank; The control valve is in an open state; the control valve switches to a closed state when receiving a closing instruction; A horizontal position sensor, used to detect the uphill angle of the current position of the vehicle; A main fuel tank level sensor, used to detect the remaining fuel quantity in the main fuel tank currently; When both the uphill angle and the current remaining fuel quantity meet the closing conditions, send a closing instruction to the control valve.

2. The anti-backflow oil control device according to claim 1, characterized in that, It further includes: A collision sensor, used to detect the vehicle condition information of the vehicle; When the vehicle condition information is a vehicle condition of a collision, send a closing instruction to the control valve.

3. A method for implementing the anti - oil - return control device as described in claim 1 or 2, characterized in that, Applied to a dual fuel tank system, the method includes: Obtain the vehicle condition information of the vehicle and the remaining fuel quantity in the main fuel tank currently; Based on the remaining fuel quantity in the main fuel tank currently, detect the uphill angle of the current position of the vehicle; According to the uphill angle of the current position, or when the vehicle condition information of the vehicle is a vehicle condition of a collision, control the control valve to close; The detecting the uphill angle of the current position of the vehicle based on the remaining fuel quantity in the main fuel tank currently includes: When the remaining fuel quantity in the main fuel tank currently is less than a first preset fuel quantity, judge whether the current position of the vehicle is uphill; or When the remaining fuel quantity in the main fuel tank currently is greater than or equal to the first preset fuel quantity and less than a second preset fuel quantity, judge whether the current position of the vehicle is uphill; or When the remaining fuel quantity in the main fuel tank currently is greater than or equal to the second preset fuel quantity and less than a third preset fuel quantity, judge whether the current position of the vehicle is uphill; When the current position of the vehicle is uphill, detect the uphill angle of the current position of the vehicle; The second preset fuel quantity is greater than the first preset fuel quantity and less than the third preset fuel quantity.

4. The anti-backflow oil control method according to claim 3, characterized in that The detecting the uphill angle of the current position of the vehicle when the current position information of the vehicle is uphill includes: When the remaining fuel quantity in the main fuel tank currently is less than the first preset fuel quantity, detect whether the uphill angle is greater than or equal to a first preset angle; or When the remaining fuel quantity in the main fuel tank currently is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, detect whether the uphill angle is greater than or equal to a second preset angle; or When the remaining fuel quantity in the main fuel tank currently is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, detect whether the uphill angle is greater than or equal to a third preset angle; Control the control valve to close according to the uphill angle of the current position; The second preset angle is greater than the third preset angle and less than the first preset angle.

5. The anti-backflow oil control method according to claim 4, wherein The controlling the control valve to close according to the uphill angle of the current position includes: When the current remaining fuel quantity in the main fuel tank is less than the first preset fuel quantity and the uphill angle is greater than or equal to the first preset angle, control the control valve to close; or When the current remaining fuel quantity in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity, and the uphill angle is greater than or equal to the second preset angle, control the control valve to close; or When the current remaining fuel quantity in the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity, and the uphill angle is greater than or equal to the third preset angle, control the control valve to close.

6. The anti-backflow oil control method according to any one of claims 3-5, characterized in that It further includes: When the uphill angle is less than the fourth preset angle, control the control valve to open.

7. An anti-backflow oil control system, characterized in that, The system includes: An acquisition module for acquiring the vehicle condition information of the vehicle and the current remaining fuel quantity in the main fuel tank; A detection module for detecting the uphill angle of the current position of the vehicle based on the current remaining fuel quantity in the main fuel tank; A control module for controlling the control valve to close according to the uphill angle of the current position or when the vehicle condition information of the vehicle is a collision vehicle condition; The detection module includes: A first judgment sub-module for judging whether the current position of the vehicle is uphill when the current remaining fuel quantity in the main fuel tank is less than the first preset fuel quantity; A second judgment sub-module for judging whether the current position of the vehicle is uphill when the current remaining fuel quantity in the main fuel tank is greater than or equal to the first preset fuel quantity and less than the second preset fuel quantity; A third judgment sub-module for judging whether the current position of the vehicle is uphill when the current remaining fuel quantity in the main fuel tank is greater than or equal to the second preset fuel quantity and less than the third preset fuel quantity.

8. A vehicle, characterized in that, The vehicle includes the anti-backflow fuel control system as claimed in claim 7.

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