Fuel discharge assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a fuel discharge assembly and a vehicle. A fuel pump is arranged in the oil tank; one end of the oil feeding pipe is communicated with the fuel pump, and the other end of the oil feeding pipe is communicated with the engine; the valve is arranged on the oil feeding pipe; the fuel discharge port is communicated with the valve; the valve is suitable for enabling the oil feeding pipe to be communicated with one of the engine and the fuel discharging opening. According to the fuel discharge assembly provided by the utility model, the valve is arranged on the oil feeding pipe, and the valve is suitable for enabling the oil feeding pipe to be selectively communicated with the engine and the fuel discharge port, so that the functions of a vehicle are increased, and the fuel can be automatically discharged from the oil tank under the conditions of oil deterioration and wrong fuel addition of the vehicle; discharge of problem fuel can be solved by dismounting in a repair shop, and a user can recover the vehicle state as soon as possible. And the equipment failure risk caused by the fuel problem is effectively reduced, stable operation of the vehicle is guaranteed, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a fuel emission component and a vehicle. Background Technology

[0002] With the continuous increase in sales of new energy vehicles in the market, some car owners frequently use electric power. For gasoline cars or hybrid vehicles, the fuel in the tank can deteriorate if left unused for several months, requiring cleaning of the fuel lines and disassembly of the fuel tank at a 4S shop. In addition, with the increasing number of methanol fuel vehicles, if the wrong fuel is mistakenly added, it must be repaired by a professional repair shop. Users cannot remove the wrong or deteriorated fuel themselves, resulting in a time-consuming and labor-intensive repair process and additional repair costs. Utility Model Content

[0003] In view of this, the present invention provides a fuel emission component and vehicle to solve the problem that users cannot discharge incorrectly added fuel or deteriorated fuel themselves.

[0004] In a first aspect, this utility model provides a fuel emission assembly, comprising:

[0005] engine;

[0006] The fuel tank contains a fuel pump;

[0007] The fuel supply pipe has one end connected to the fuel pump and the other end connected to the engine.

[0008] Valves are installed on the oil supply pipe;

[0009] The fuel discharge port is connected to the valve;

[0010] The valve is designed to allow selective connection between the fuel supply line and either the engine or the fuel outlet.

[0011] Beneficial Effects: The fuel discharge assembly provided in this embodiment of the invention, by placing a valve on the fuel delivery pipe and adapting the valve to selectively connect the fuel delivery pipe to either the engine or the fuel discharge port, enhances vehicle functionality. This ensures that in the event of fuel deterioration or incorrect fuel addition, the fuel can be automatically discharged from the fuel tank, avoiding the need for disassembly at a repair shop to resolve the fuel discharge issue. This allows users to quickly restore the vehicle to its normal condition. It effectively reduces the risk of equipment failure due to fuel problems, ensures stable vehicle operation, and reduces maintenance costs.

[0012] In one alternative implementation, the fuel emission assembly further includes a control unit electrically connected to the valve.

[0013] Beneficial effects: By electrically connecting the control unit to the valve, the control unit can intelligently regulate the valve, precisely control the valve's conduction direction, ensure that the fuel flow direction is switched as needed, further improve the system's automation level, optimize fuel management efficiency, reduce the risk of human error, and enhance vehicle operation safety.

[0014] In one alternative embodiment, the fuel emission assembly further includes: a fuel identification sensor adapted to acquire characteristic parameters of the fuel; the fuel identification sensor is electrically connected to the control unit.

[0015] Beneficial effects: Through the electrical connection between the fuel identification sensor and the control unit, real-time data transmission is achieved, enabling precise control of the fuel system. If an anomaly is detected, an alarm is immediately triggered, and the control unit commands the valve to switch to a blocking mode, preventing substandard fuel from entering the engine, ensuring stable operation, and extending equipment life. Alternatively, the valve can be commanded to switch to an emission mode, quickly expelling substandard fuel to avoid engine damage. This ensures stable vehicle operation even in complex environments, greatly improving driving safety.

[0016] In one alternative embodiment, the fuel emission assembly further includes a switch electrically connected to the control unit, the switch being adapted to switch the on / off state of the valve via the control unit.

[0017] Beneficial effects: The switch is electrically connected to the control unit, allowing the switch to manually or automatically switch the valve's conduction state for a rapid response in emergencies, manual intervention in fuel flow, or automatic adjustment under preset conditions, ensuring the flexibility and reliability of fuel supply.

[0018] In one alternative implementation, the fuel emission assembly further includes an alarm device electrically connected to the control unit.

[0019] Beneficial effects: Real-time data transmission is achieved through the electrical connection between the fuel identification sensor and the control unit. If an abnormality is detected, the control unit can immediately trigger the alarm device. The alarm can be triggered in a known manner, such as an alarm sound or a display screen reminder, to alert the user.

[0020] In one alternative embodiment, the fuel discharge assembly further includes a fuel filler port adapted to add fuel to the fuel tank;

[0021] The fuel outlet is located near the fuel filler port and is adapted to communicate with the outside of the fuel discharge assembly.

[0022] Beneficial effects: By placing the fuel outlet close to the fuel filler neck, it facilitates layout within the vehicle body. The fuel outlet is suitable for external connection to the fuel emission components, thereby facilitating the removal of problematic fuel from the vehicle.

[0023] In one alternative implementation, the fuel identification sensor is located on the fuel delivery line and close to the fuel pump.

[0024] Beneficial effect: By placing the fuel identification sensor closer to the fuel pump, it is easier and faster to identify fuel quality.

[0025] In one alternative implementation, the fuel outlet and the valve are connected via a drain line;

[0026] The fuel emission assembly also includes a return line, one end of which is connected to the fuel discharge port and the other end of which is connected to the fuel tank;

[0027] The fuel discharge port is also equipped with a drain valve. In the non-stressed state, the drain valve is suitable for closing the fuel discharge port and connecting the drain line with the return line; in the stressed state, the drain valve is suitable for closing the return line and connecting the drain line with the fuel discharge port.

[0028] Beneficial effects: By installing a drain valve at the fuel outlet, the drain valve, in its unforced state, closes the fuel outlet, connecting the drain line to the return line. This facilitates fuel backflow and prevents fuel from escaping from the fuel outlet when the external line is not connected, thus avoiding potential hazards. When the drain valve is under pressure, it can be pushed and flipped by an external line, thereby closing the return line and connecting the drain line to the fuel outlet. This facilitates fuel discharge and prevents fuel from flowing back into the fuel tank during the discharge process.

[0029] Secondly, the present invention also provides a vehicle, including: a vehicle body, and a fuel emission component as described above.

[0030] In one alternative embodiment, a fuel tank cap is provided on the exterior of the vehicle, the fuel tank cap being adapted to simultaneously cover both the fuel discharge port and the fuel filler port.

[0031] Beneficial effects: The fuel tank cap is suitable for covering the fuel filling port. Simultaneously, an independent fuel vent is added next to the traditional fuel filling port, facilitating the quick removal of substandard fuel without affecting normal refueling, ensuring convenient and safe operation. Both the fuel vent and fuel filling ports are covered by the fuel tank cap, eliminating the need for additional protective devices for the fuel vent, simplifying the structural design, and improving overall aesthetics. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the vehicle according to this utility model;

[0034] Figure 2 This is a schematic diagram of the fuel emission assembly of this utility model. Figure 1 ;

[0035] Figure 3 This is a schematic diagram of the fuel inlet of this utility model;

[0036] Figure 4 This is a schematic diagram of the fuel emission assembly of this utility model. Figure 2 ;

[0037] Figure 5 This is a schematic diagram showing the switching of the drain valve between a stressed state and an unstressed state.

[0038] Figure 6 This is a schematic diagram of the drain valve in a non-stressed state.

[0039] Figure 7 This is a schematic diagram of the drain valve under stress.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Fuel tank; 11. Fuel pump; 12. Fuel delivery line; 13. Return line; 14. Drain line; 2. Control unit; 3. Switch; 4. Engine; 5. Valve; 6. Fuel identification sensor; 71. Fuel outlet; 711. Drain valve; 72. Fuel filler cap; 73. Fuel tank cap; 8. Display screen; 9. Alarm device. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0046] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0047] According to an embodiment of the present invention, in one aspect, a fuel emission assembly is provided, comprising:

[0048] Engine 4;

[0049] Fuel tank 1, which is equipped with fuel pump 11;

[0050] Fuel supply pipe 12, one end of which is connected to fuel pump 11, and the other end of fuel supply pipe 12 is connected to engine 4;

[0051] Valve 5 is located on oil supply pipe 12;

[0052] Fuel discharge port 71 is connected to valve 5;

[0053] Valve 5 is adapted to selectively connect the fuel supply pipe 12 to the engine 4 and the fuel discharge port 71.

[0054] Fuel pump 11 is located inside fuel tank 1. When fuel pump 11 is running, it can deliver fuel in fuel tank to engine 4 or fuel outlet 71 through fuel delivery pipe 12. Valve 5 controls the flow path to achieve directional fuel discharge and ensure efficient fuel utilization or safe discharge.

[0055] Valve 5 is located on fuel supply pipe 12, and fuel discharge port 71 is connected to valve 5. By adjusting the opening state of valve 5, fuel can be selectively delivered to engine 4 for combustion or directed to fuel discharge port 71 for discharge.

[0056] Because valve 5 is adapted to selectively connect the fuel supply pipe 12 to either the engine 4 or the fuel outlet 71, when valve 5 is connected to the engine 4, it ensures that the fuel in the fuel tank 1 is supplied to the engine 4 normally, maintaining the stable operation of the engine 4. Conversely, when valve 5 is connected to the fuel outlet 71, the fuel in the fuel tank 1 is no longer supplied to the engine 4, so that the fuel can be smoothly discharged from the fuel outlet 71, avoiding accumulation, ensuring the safety of vehicle fuel use, and avoiding the use of deteriorated fuel or incorrect grade fuel. Through the flexible switching of valve 5, this utility model not only improves the convenience of fuel management, but also enhances the safety and reliability of the system, effectively reduces the risk of equipment failure caused by fuel problems, facilitates the efficient use and safe discharge of fuel, ensures the stable operation of equipment, and reduces maintenance costs.

[0057] The fuel discharge assembly provided in this embodiment of the invention, by placing a valve 5 on the fuel supply pipe 12, and adapting the valve 5 to selectively connect the fuel supply pipe 12 to either the engine 4 or the fuel discharge port 71, enhances vehicle functionality. This ensures that in the event of fuel deterioration or incorrect fuel addition, the fuel can be automatically discharged from the fuel tank 1, avoiding the need for disassembly at a repair shop to resolve the fuel discharge issue. This allows users to quickly restore the vehicle to its normal condition. It effectively reduces the risk of equipment failure due to fuel problems, ensures stable vehicle operation, and reduces maintenance costs.

[0058] Furthermore, this embodiment allows for flexible adjustment of the conduction state of valve 5 according to actual needs, enabling rapid switching between fuel supply and emission, further enhancing operational convenience and improving user experience.

[0059] In some embodiments, valve 5 can be a mechanical valve or an electrically operated valve, such as a solenoid valve. Mechanical valves can be opened or closed manually, while electrically operated valves can be opened and closed electrically in response to control signals; this allows valve 5 to be opened as needed to discharge problematic fuel. In this embodiment, by adding a low-cost solenoid valve, the level of vehicle automation is improved with minimal additional cost, enabling precise control of fuel flow and avoiding the need for disassembly at a repair shop to resolve problematic fuel discharge, thereby significantly reducing after-sales maintenance costs and improving the user experience.

[0060] In some embodiments, the fuel emission assembly further includes a control unit 2, which is electrically connected to the valve 5.

[0061] By electrically connecting the control unit 2 to the valve 5, the control unit 2 can intelligently regulate the valve 5, precisely control the conduction direction of the valve 5, ensure that the fuel flow direction is switched as needed, further improve the system's automation level, optimize fuel management efficiency, reduce the risk of human error, and enhance vehicle operation safety.

[0062] In some embodiments, control unit 2 includes ECU (engine control unit).

[0063] In some embodiments, the fuel emission assembly further includes: a fuel identification sensor 6, adapted to acquire characteristic parameters of the fuel; the fuel identification sensor 6 is electrically connected to the control unit 2;

[0064] In this embodiment, the fuel identification sensor 6 is disposed on the fuel delivery pipe 12 and close to the fuel pump 11. Specifically, it can be located between the valve 5 and the fuel pump 11.

[0065] By placing the fuel identification sensor 6 close to the fuel pump 11, fuel quality can be identified more quickly and easily.

[0066] The function of the fuel identification sensor 6 is to monitor the type and quality of fuel in the fuel supply pipe 12 in real time, transmit the data to the control unit 2, ensure that the fuel meets the operating requirements of the engine 4, prevent malfunctions caused by improper fuel, and further ensure the safety of vehicle operation.

[0067] In this embodiment, the characteristic parameters of the fuel may include: fuel type, fuel quality, and fuel chemical composition. The fuel identification sensor 6 can automatically identify the fuel type based on preset parameters, distinguishing different fuel types (such as gasoline, diesel, ethanol, biofuel, aviation kerosene, etc.) to prevent equipment damage caused by incorrect refueling. Simultaneously, the fuel identification sensor 6 can detect fuel quality, identify inferior or deteriorated fuel, provide timely warnings, and automatically adjust valve 5 to block inferior fuel from entering engine 4, ensuring stable operation and extending equipment life. It can also ensure compliance with environmental standards (such as China VI and European standards) by detecting the fuel's chemical composition (such as sulfur content, water content, and impurity ratio). Furthermore, the fuel identification sensor 6 provides accurate feedback to the control unit 2 through real-time monitoring data, optimizing fuel management strategies, improving emission efficiency, and adjusting parameters such as air-fuel ratio and ignition time according to fuel characteristics to improve combustion efficiency and reduce pollutant emissions, thereby enhancing the vehicle's environmental performance.

[0068] In some embodiments, the fuel identification sensor 6 is electrically connected to the control unit 2.

[0069] Beneficial effects: Through the electrical connection between the fuel identification sensor 6 and the control unit 2, real-time data transmission is achieved, enabling precise control of the fuel system. If an anomaly is detected, an alarm is immediately triggered, and the control unit 2 instructs valve 5 to switch to blocking mode, preventing substandard fuel from entering engine 4, ensuring stable operation and extending equipment life. Alternatively, valve 5 can be instructed to switch to emission mode, quickly expelling substandard fuel to avoid engine damage. This ensures stable vehicle operation even in complex environments, greatly improving driving safety.

[0070] The fuel identification sensor 6 can acquire the characteristic parameters of the fuel in real time and feed them back to the control unit 2. When the fuel is detected to be qualified, the sensor feeds back to the control unit 2 and controls the valve 5 to switch the conduction direction.

[0071] In some embodiments, the fuel discharge assembly further includes: a fuel filling port 72, adapted to fill fuel into the fuel tank 1;

[0072] The fuel outlet 71 is located near the fuel filling port 72, and the fuel outlet 71 is adapted to communicate with the outside of the fuel discharge assembly.

[0073] By positioning the fuel outlet 71 close to the fuel filler port 72, it is easier to arrange the layout on the vehicle body.

[0074] The fuel outlet 71 is adapted to connect to the outside of the fuel discharge assembly, thereby facilitating the discharge of problematic fuel to the outside of the vehicle.

[0075] In some embodiments, the fuel emission assembly further includes a switch 3, which is adapted to switch the on / off state of the valve 5 via the control unit 2; the switch 3 is electrically connected to the control unit 2.

[0076] Switch 3 is electrically connected to control unit 2, allowing switch 3 to manually or automatically switch the conduction state of valve 5 so as to respond quickly in emergency situations, manually intervene in the fuel flow direction, or automatically adjust under preset conditions to ensure the flexibility and reliability of fuel supply.

[0077] In this embodiment, switch 3 can be part of the vehicle's central control system, integrated into the cockpit, and is easy to operate.

[0078] In this embodiment, switch 3 can serve as a corrective measure in case of a malfunction in the fuel identification sensor 6. Switch 3 inputs a signal to control unit 2 to switch the conduction state of valve 5, allowing manual intervention in the fuel flow. For example, if the driver realizes they have mistakenly added fuel while refueling, or knows the fuel is spoiled or unsuitable due to the car not being driven for a long time, a signal can be directly input through switch 3 to cause control unit 2 to switch valve 5 to discharge the unsuitable fuel, even without activating the fuel identification sensor 6. The inclusion of switch 3 not only improves the system's fault tolerance but also enhances user convenience, enabling the driver to respond quickly in emergencies, effectively reducing risks and ensuring vehicle safety. The automatic judgment of control unit 2 combined with the manual intervention of switch 3 forms a dual protection mechanism. Through this dual protection mechanism, the vehicle exhibits higher adaptability and stability when dealing with complex fuel environments, further enhancing the overall driving experience.

[0079] In some embodiments, the fuel emission assembly further includes an alarm device 9, which is electrically connected to the control unit 2.

[0080] Through the electrical connection between the fuel identification sensor 6 and the control unit 2, real-time data transmission is achieved. If an abnormality is detected, the control unit 2 can immediately trigger the alarm device 9. The alarm form is a known method, such as an alarm sound or a display screen reminder, to alert the user.

[0081] In some embodiments, the fuel emission assembly further includes a display screen 8, which is electrically connected to the control unit 2.

[0082] The display screen 8 is electrically connected to the control unit 2. Through the central control screen, the user can view the fuel status and valve conduction status in real time, providing intuitive information so that the conduction mode of valve 5 can be manually switched as needed to facilitate the discharge of unqualified fuel and avoid damage to the engine.

[0083] Additionally, the display screen 8 is electrically connected to the control unit 2. The display screen 8 can also display real-time data from the fuel identification sensor 6, such as fuel type, quality grade, and chemical composition, to help the driver fully understand the fuel situation, make timely adjustments, and ensure driving safety.

[0084] In some embodiments, combined with Figures 5-7 As shown, the fuel discharge port 71 is connected to the valve 5 via the oil drain line 14;

[0085] The fuel emission assembly also includes: a return line 13, one end of which is connected to the fuel discharge port 71 and the other end of which is connected to the fuel tank 1;

[0086] The fuel discharge port 71 is also equipped with a drain valve 711. In the non-stressed state, the drain valve 711 is suitable for closing the fuel discharge port 71 and connecting the drain line 14 with the return line 13. In the stressed state, the drain valve 711 is suitable for closing the return line 13 and connecting the drain line 14 with the fuel discharge port 71.

[0087] By installing a drain valve 711 at the fuel outlet 71, the drain valve 711 is suitable for closing the fuel outlet 71 when not under force. For example, when the external pipeline is not connected to the fuel outlet 71, the drain pipeline 14 is connected to the return pipeline 13, thereby facilitating the return of fuel and preventing fuel from being discharged from the fuel outlet 71 when the external pipeline is not connected, so as to avoid danger.

[0088] When the drain valve 711 is under pressure, such as when the external pipeline is connected to the fuel discharge port 71, the external pipeline can be used to push the drain valve 711 to flip, thereby closing the return pipeline 13 so that the drain pipeline 14 can be connected to the fuel discharge port 71, thus facilitating the discharge of fuel and preventing it from flowing back to the fuel tank 1 during the discharge process.

[0089] According to an embodiment of the present invention, another aspect provides a vehicle, comprising:

[0090] The vehicle body, and the fuel emission components as described above.

[0091] The vehicle in this embodiment can be of various types, such as sedans, trucks, and buses, all of which can be adapted to this fuel emission component. The vehicle's power mode can include various forms such as conventional fuel, hybrid power, or new fuel.

[0092] In some embodiments, combined with Figure 1 , Figure 3 As shown, a fuel tank cap 73 is provided on the exterior of the vehicle. The fuel tank cap 73 is adapted to cover the fuel discharge port 71 and the fuel filling port 72.

[0093] The fuel tank cap 73 is suitable for covering the fuel filling port 72. Simultaneously, a separate fuel vent 71 is added next to the traditional fuel filling port 72, facilitating the quick discharge of substandard fuel without affecting normal refueling, ensuring convenient and safe operation. Both the fuel vent 71 and the fuel filling port 72 are covered by the fuel tank cap 73, eliminating the need for additional protective devices for the fuel vent 71, simplifying the structural design, and improving overall aesthetics.

[0094] The working principle of the fuel emission component in this embodiment will be explained in detail below.

[0095] When the vehicle is in normal use, it follows the normal fuel system procedure: that is, the control unit 2 controls the fuel pump 11 in the vehicle's fuel tank 1 to operate, and transports fuel through the fuel delivery pipe 12 to the fuel inlet pipe or high-pressure fuel pump of the engine 4. The fuel participates in the combustion of the engine, and the vehicle moves.

[0096] When fuel deterioration or incorrect fuel addition occurs:

[0097] During fuel delivery via fuel supply pipe 12, the fuel identification sensor 6 passes through the fuel identification sensor 6. If the sensor detects an error, it will display a message on the vehicle's central control display screen 8 stating, "Incorrect fuel was added or the fuel has deteriorated; please add qualified fuel." The user can then connect the fuel outlet 71 to a suitable container and press switch 3. This switches the flow path to fuel discharge mode, activating the fuel pump 11 in the fuel tank 1. Fuel is discharged from the vehicle through fuel supply pipe 12, fuel identification sensor 6, valve 5, the drain pipe, and fuel outlet 71. The user can then add the appropriate fuel, restoring vehicle usability and avoiding trips to a 4S dealership for repairs, thus saving time and repair costs.

[0098] In addition, as a further safeguard, when a fuel filling error occurs, the control unit 2 can immediately activate the switch 3, automatically switch the valve 5, quickly cut off the flow of unqualified fuel, and alert the driver through the display screen 8 to ensure that the problematic fuel is discharged in time, prevent damage to the engine, and ensure driving safety.

[0099] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A fuel vent assembly, comprising: include: Engine (4); The fuel tank (1) is equipped with a fuel pump (11); Fuel delivery pipe (12), one end of which is connected to the fuel pump (11), and the other end of which is connected to the engine (4); Valve (5) is provided on the oil delivery pipe (12); The fuel discharge port (71) is connected to the valve (5); The valve (5) is adapted to selectively connect the oil supply pipe (12) to the engine (4) and the fuel discharge port (71).

2. The fuel vent assembly of claim 1, wherein, The fuel emission assembly also includes a control unit (2) which is electrically connected to the valve (5).

3. The fuel vent assembly of claim 2, wherein, The fuel emission assembly further includes a fuel identification sensor (6) adapted to acquire characteristic parameters of the fuel; the fuel identification sensor (6) is electrically connected to the control unit (2).

4. The fuel vent assembly of claim 2, wherein, The fuel emission assembly further includes a switch (3) electrically connected to the control unit (2), the switch (3) being adapted to switch the conduction state of the valve (5) via the control unit (2).

5. The fuel vent assembly of claim 2, wherein, The fuel emission assembly also includes an alarm device (9) which is electrically connected to the control unit (2).

6. The fuel vent assembly of claim 1, wherein, The fuel discharge assembly further includes a fuel filling port (72) adapted to fill the fuel tank (1) with fuel; The fuel outlet (71) is located near the fuel filling port (72), and the fuel outlet (71) is adapted to communicate with the outside of the fuel discharge assembly.

7. The fuel vent assembly of claim 3, wherein, The fuel identification sensor (6) is disposed on the fuel delivery pipe (12) and is located near the fuel pump (11).

8. The fuel vent assembly of claim 1, wherein, The fuel discharge port (71) is connected to the valve (5) via the oil drain line (14); The fuel emission assembly further includes: a return pipe (13), one end of which is connected to the fuel emission port (71) and the other end of which is connected to the fuel tank (1); The fuel discharge port (71) is also provided with a drain valve (711). The drain valve (711) is adapted to close the fuel discharge port (71) in a non-stressed state and to connect the drain line (14) with the return line (13). The drain valve (711) is adapted to close the return line (13) in a stressed state and to connect the drain line (14) with the fuel discharge port (71).

9. A vehicle characterized by comprising: It includes the vehicle body and the fuel emission assembly as described in any one of claims 1 to 8.

10. The vehicle of claim 9, wherein, The vehicle is provided with a fuel tank cap (73) on its exterior, which is adapted to cover both the fuel discharge port (71) and the fuel filling port (72) at the same time.

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