Fuel vaporization piping device, fuel system, and vehicle

Abstract

This invention relates to the field of vehicle fuel systems. The invention discloses a fuel evaporation pipeline device, a fuel system, and a vehicle. The fuel evaporation pipeline device includes a first pipeline, a second pipeline, and a gas-liquid separator. The gas-liquid separator includes an inlet and an outlet. The first pipeline connects the inlet to the fuel tank of the fuel system, and the second pipeline connects the outlet to the fuel adsorption structure of the fuel system. The gas-liquid separator is configured to connect the first and second pipelines and is further configured to allow vapor to pass through, allowing vapor to flow into the fuel adsorption structure along the second pipeline. Therefore, by incorporating the gas-liquid separator, it is beneficial to reduce the amount of liquid fuel flowing into the fuel adsorption structure, thereby reducing the risk of the fuel adsorption structure becoming contaminated by liquid fuel, leading to saturation and failure. This helps to reduce problems such as automatic refueling nozzle tripping, increased fuel consumption, and excessive emissions.

Description

Technical Field

[0001] This invention relates to the field of vehicle fuel systems, and more particularly to a fuel evaporation pipeline device, a fuel system, and a vehicle. Background Technology

[0002] In related technologies, fuel systems use fuel adsorption structures to adsorb fuel vapors generated in the fuel tank and then desorb them to send them back to the engine for reuse. Traditional fuel systems directly direct fuel vapors from the fuel tank to the fuel adsorption structure. However, in situations such as overfilling, vehicle vibration, or malfunctions in the fuel tank's internal valves, fuel can directly enter the fuel adsorption structure, causing it to saturate and fail, leading to problems like premature refueling, increased fuel consumption, and excessive emissions. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a fuel evaporation control system that helps reduce the amount of liquid fuel flowing into the fuel adsorption structure, thereby reducing the risk of the fuel adsorption structure becoming contaminated by liquid fuel, leading to saturation and failure. This, in turn, helps reduce problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions.

[0004] The present invention also proposes a fuel system.

[0005] The present invention further proposes a vehicle.

[0006] According to a first aspect of the present invention, a fuel evaporation pipeline device includes: a first pipeline, a second pipeline, and a gas-liquid separation device. The gas-liquid separation device includes a device inlet and a device outlet. The first pipeline is used to connect the device inlet and the fuel tank of the fuel system. The second pipeline is used to connect the device outlet and the fuel adsorption structure of the fuel system. The gas-liquid separation device is configured to connect the first pipeline and the second pipeline, and is further configured to allow vapor to pass through so that vapor flows into the fuel adsorption structure along the second pipeline.

[0007] According to the first aspect of the present invention, the fuel evaporation pipeline device is beneficial to reducing the amount of liquid fuel flowing into the fuel adsorption structure, which is beneficial to reducing the risk of the fuel adsorption structure being contaminated by liquid fuel, leading to saturation and failure of the fuel adsorption structure, thereby helping to reduce the occurrence of problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions.

[0008] In some examples of the present invention, the gas-liquid separation device includes: a housing and a first partition structure, the housing defining a separation chamber and having a device inlet and a device outlet, the first partition structure being disposed within the separation chamber and fixed to the housing, the first partition structure dividing the separation chamber into a first cavity and a second cavity, the first cavity communicating with the device inlet, the second cavity communicating with the device outlet, and the first partition structure being configured to allow vapor in the first cavity to flow into the second cavity.

[0009] In some examples of the present invention, the first separation structure includes a separation structure body and a one-way valve. The separation structure body divides the separation chamber into a first chamber and a second chamber, and the one-way valve is provided on the separation structure body to allow vapor in the first chamber to flow into the second chamber.

[0010] In some examples of the present invention, the outer shell includes: a top shell wall, a first shell side wall, a second shell side wall, and two third shell side walls, the first shell side wall and the second shell side wall being opposite to and spaced apart, the top shell wall being connected between the first shell side wall and the second shell side wall, the first shell side wall forming a device inlet, the second shell side wall forming a device outlet, the two third shell side walls being opposite to and spaced apart, and both third shell side walls being connected between the first shell side wall and the second shell side wall, and both third shell side walls being connected to the top shell wall, the first partition structure, the top shell wall, the second shell side wall, and the two third shell side walls together defining a second cavity.

[0011] In some examples of the present invention, the first shell sidewall and the second shell sidewall are opposite each other along a first direction, forming an acute angle between the first direction and the vertical direction, and along the vertical direction, the setting height of the device inlet is lower than the setting height of the device outlet.

[0012] In some examples of the present invention, the gas-liquid separation device further includes: a second partition structure fixed in the first cavity, the second partition structure dividing the first cavity into a first sub-cavity and a second sub-cavity that are connected, the first sub-cavity being connected to the device inlet, and the second sub-cavity being located below the second cavity and corresponding to a one-way valve, the one-way valve being able to connect the second sub-cavity and the second cavity.

[0013] In some examples of the present invention, the second partition structure is formed with a drain port that connects the second sub-cavity and the first sub-cavity.

[0014] In some examples of the present invention, the outer shell is a transparent structure; and at least one of the separation structure body and the second partition structure is a transparent structure.

[0015] According to a second aspect of the present invention, the fuel system includes: a fuel tank and a fuel adsorption structure; a fuel evaporation pipeline device, the fuel evaporation pipeline device being the aforementioned fuel evaporation pipeline device, the fuel evaporation pipeline device being located above the fuel tank, a first pipeline connecting the device inlet and the fuel tank, and a second pipeline connecting the device outlet and the fuel adsorption structure.

[0016] According to a third aspect of the present invention, the vehicle includes: an engine; a fuel system, the fuel system being the aforementioned fuel system, a fuel tank being connected to the engine to supply fuel to the engine, and a fuel adsorption structure being connected to the engine to allow oil in the fuel adsorption structure to flow into the engine.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural block diagram of a fuel system and engine according to an embodiment of the present invention.

[0019] Figure label: Fuel evaporation piping device 100; First pipeline 200; Second pipeline 300; Gas-liquid separation device 400; device inlet 410; device outlet 420; outer shell 430; top wall of shell 431; first side wall of shell 432; second side wall of shell 433; bottom wall of shell 434; first partition structure 440; separation structure body 441; one-way valve 442; second partition structure 450; drain port 451; separation chamber 460; first chamber 461; second chamber 462; first sub-chamber 463; second sub-chamber 464; Fuel tank 510; fuel adsorption structure 520; Engine 700; Third pipe 810; Fourth pipe 820; Fifth pipe 830; Sixth pipe 840; Filter device 900. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following is for reference. Figure 1 A fuel evaporation pipeline device 100 according to an embodiment of the present invention is described.

[0022] like Figure 1As shown, according to a first aspect embodiment of the present invention, the fuel evaporation pipeline device 100 includes: a first pipeline 200, a second pipeline 300, and a gas-liquid separator 400. The gas-liquid separator 400 includes a device inlet 410 and a device outlet 420. The first pipeline 200 is used to connect the device inlet 410 and the fuel tank 510 of the fuel system. The second pipeline 300 is used to connect the device outlet 420 and the fuel adsorption structure 520 of the fuel system. The gas-liquid separator 400 is configured to connect the first pipeline 200 and the second pipeline 300, and is also configured to allow vapor to pass through so that vapor flows into the fuel adsorption structure 520 along the second pipeline 300.

[0023] Both the first pipe 200 and the second pipe 300 can be made of materials such as nitrile rubber and fluororubber. The fuel adsorption structure 520 can be an activated carbon canister, which can adsorb fuel vapor in the fuel tank 510, reducing the pollution of the environment by unburned hydrocarbons.

[0024] As an example, such as Figure 1 As shown, the fuel system may include a third pipe 810, a fourth pipe 820, a fifth pipe 830, a sixth pipe 840, and a filter device 900. The third pipe 810 may be a refueling pipe, which may be connected to an external refueling device and the fuel tank 510 of the fuel system, allowing the external refueling device to add fuel to the fuel tank 510 through the third pipe 810.

[0025] The fourth line 820 can be connected to the fuel tank 510 of the fuel system and the engine 700 of the vehicle. The fourth line 820 can deliver the liquid fuel stored in the fuel tank 510 to the combustion chamber of the engine 700 to provide energy for combustion in the combustion chamber.

[0026] The fifth pipe 830 can be connected to the vehicle's engine 700 and the fuel adsorption structure 520 of the fuel system. The fuel vapor adsorbed by the fuel adsorption structure 520 can flow through the fifth pipe 830 to the combustion chamber of the engine 700 under the negative pressure of the engine 700 to participate in combustion, which is conducive to the recovery and reuse of fuel vapor and improves fuel efficiency.

[0027] The filter device 900 can be an ash filter, which can adsorb dust, particulate matter and other impurities in the air. This helps reduce the amount of impurities entering the fuel evaporation line device 100, reduces the risk of impurities clogging the components of the fuel evaporation line device 100, and improves the reliability of the fuel evaporation line device 100. The filter device 900 can also adsorb and filter fuel vapor flowing out from the fuel adsorption structure 520, which helps reduce the amount of fuel vapor emitted into the atmosphere. This helps reduce the risk of hydrocarbons in unburned fuel vapor polluting the air, reduces the amount of impurities mixed in the fuel vapor entering the engine 700, and improves the reliability of fuel vapor combustion.

[0028] The sixth line 840 can be connected to the fuel adsorption structure 520 and the filter device 900 of the fuel system. The sixth line 840 can guide the fuel vapor containing impurities in the fuel adsorption structure 520 to the filter device 900 for filtration. The sixth line 840 can also guide the fuel vapor filtered by the filter device 900 back into the fuel adsorption structure 520.

[0029] For example, an external refueling device can inject fuel into the fuel tank 510 through a third pipeline 810. Fuel vapor mixed with fuel droplets can flow into the gas-liquid separator 400 from the device inlet 410 along the first pipeline 200. The gas-liquid separator 400 only allows fuel vapor to pass through and can intercept liquid fuel. The separated fuel vapor can flow out of the gas-liquid separator 400 through the device outlet 420 and be transported to the fuel adsorption structure 520 along the second pipeline 300. The fuel adsorption structure 520 can adsorb and store the fuel vapor. Fuel vapor mixed with impurities in the fuel adsorption structure 520 can be guided to the filter device 900 through the sixth pipeline 840. The filter device 900 can adsorb and filter the fuel vapor. The fuel vapor filtered by the filter device 900 can flow back to the fuel adsorption structure 520 through the sixth pipeline 840.

[0030] Liquid fuel stored in fuel tank 510 can be transported to the combustion chamber of engine 700 via fourth pipe 820 to provide energy for combustion. When engine 700 is operating under conditions that allow, fuel vapor in fuel adsorption structure 520 can be desorbed and transported to the combustion chamber of engine 700 via fifth pipe 830 to participate in combustion, realizing the recovery and reuse of fuel vapor and improving fuel efficiency. Air filtered by filter device 900 can be transported to engine combustion chamber via sixth pipe 840, fuel adsorption structure 520, and fifth pipe 830. The oxygen in the air can assist combustion in engine combustion chamber, thereby promoting more complete combustion of liquid fuel and fuel vapor in engine 700.

[0031] The gas-liquid separation device 400 of the present invention only allows vapor to pass through, and the gas-liquid separation device 400 can intercept liquid fuel, which helps to reduce the amount of liquid fuel flowing into the fuel adsorption structure 520, reduces the risk of the fuel adsorption structure 520 being contaminated by liquid fuel, leading to saturation and failure of the fuel adsorption structure 520, improves the overall reliability of the fuel evaporation pipeline device 100, extends the service life of the fuel adsorption structure 520, enables the fuel adsorption structure 520 to continuously adsorb fuel vapor, maintains the stability of the fuel system, reduces the occurrence of problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions, and also reduces the amount of fuel vapor emitted into the atmosphere, thus reducing the risk of fuel vapor polluting the atmosphere.

[0032] The present invention employs a design in which the first pipeline 200 connects the device inlet 410 and the fuel tank 510 of the fuel system, the second pipeline 300 connects the device outlet 420 and the fuel adsorption structure 520 of the fuel system, and the gas-liquid separation device 400 connects the first pipeline 200 and the second pipeline 300. This design can reduce the number of parts in the fuel evaporation pipeline device 100, simplify the overall structure of the fuel evaporation pipeline device 100, and thus reduce the manufacturing cost of the fuel evaporation pipeline device 100.

[0033] According to the first aspect of the present invention, the fuel evaporation pipeline device 100 is beneficial to reducing the amount of liquid fuel flowing into the fuel adsorption structure 520, which is beneficial to reducing the risk of the fuel adsorption structure 520 being contaminated by liquid fuel, leading to saturation and failure of the fuel adsorption structure 520, thereby helping to reduce the occurrence of problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions.

[0034] In some examples of embodiments of the present invention, such as Figure 1 As shown, the gas-liquid separation device 400 includes: a housing 430 and a first partition structure 440. The housing 430 defines a separation chamber 460 and forms a device inlet 410 and a device outlet 420. The first partition structure 440 is disposed in the separation chamber 460 and fixed to the housing 430. The first partition structure 440 divides the separation chamber 460 into a first cavity 461 and a second cavity 462. The first cavity 461 is connected to the device inlet 410, and the second cavity 462 is connected to the device outlet 420. The first partition structure 440 is configured to allow vapor in the first cavity 461 to flow into the second cavity 462.

[0035] The outer shell 430 can be made of materials such as polycarbonate or acrylic. The first partition structure 440 and the outer shell 430 can be integrally formed, and the first partition structure 440 can be fixed to the outer shell 430 by fasteners such as clips and bolts. As an embodiment, an isolation membrane can be provided on the first partition structure 440. The isolation membrane can be configured to allow vapor in the first cavity 461 to flow into the second cavity 462, but not allow liquid in the first cavity 461 to flow into the second cavity 462.

[0036] The outer casing 430 defines the separation chamber 460 and forms a device inlet 410 and a device outlet 420. The first partition structure 440 is disposed in the separation chamber 460 and fixed to the outer casing 430, which is beneficial to improving the structural compactness of the gas-liquid separation device 400 and optimizing the space utilization of the gas-liquid separation device 400.

[0037] As an example, vapor in the fuel tank 510 can enter the first chamber 461 through the device inlet 410, and the vapor can flow into the second chamber 462 through the first partition structure 440. Liquid fuel is intercepted in the first chamber 461 by the first partition structure 440, and the vapor in the second chamber 462 can flow out of the gas-liquid separator 400 through the device outlet 420.

[0038] Vapor in the first chamber 461 can flow into the second chamber 462 through the first partition structure 440. Liquid fuel is intercepted in the first chamber 461 by the first partition structure 440, which helps to further reduce the amount of liquid fuel flowing into the fuel adsorption structure 520. This helps to further reduce the risk of the fuel adsorption structure 520 being contaminated by liquid fuel, leading to saturation and failure of the fuel adsorption structure 520. This helps to further reduce the occurrence of problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions.

[0039] In some examples of embodiments of the present invention, such as Figure 1 As shown, the first separation structure 440 includes a separation structure body 441 and a one-way valve 442. The separation structure body 441 divides the separation chamber 460 into a first chamber 461 and a second chamber 462. The one-way valve 442 is provided on the separation structure body 441 so that the vapor in the first chamber 461 can flow into the second chamber 462.

[0040] The check valve 442 can be a suspended ball valve type check valve. As one embodiment, the check valve 442 and the separation structure body 441 can be fixedly connected by a snap-fit. As another embodiment, the check valve 442 and the separation structure body 441 can be fixedly connected by bolts.

[0041] The one-way valve 442 is located on the main body of the separation structure 441, which helps to further improve the structural compactness of the gas-liquid separator 400. The one-way valve 442 only allows fuel vapor in the first chamber 461 to flow into the second chamber 462 in one direction. Liquid fuel is intercepted by the one-way valve 442 in the first chamber 461, which is more conducive to reducing the amount of liquid fuel flowing into the fuel adsorption structure 520. This is more conducive to reducing the risk of the fuel adsorption structure 520 being contaminated by liquid fuel, leading to saturation and failure of the fuel adsorption structure 520. As a result, it is more conducive to reducing the occurrence of problems such as vehicle refueling nozzle tripping, increased fuel consumption, and excessive emissions.

[0042] For example, the one-way valve 442 can prevent the vapor in the second chamber 462 from flowing back to the first chamber 461, which helps to ensure that the fuel vapor in the second chamber 462 can continuously flow to the fuel adsorption structure 520, thereby helping to maintain the normal operating rhythm of the fuel system.

[0043] In some examples of embodiments of the present invention, such as Figure 1 As shown, the outer shell 430 includes: a top shell wall 431, a first shell side wall 432, a second shell side wall 433, and two third shell side walls. The first shell side wall 432 and the second shell side wall 433 are opposite to each other and spaced apart. The top shell wall 431 is connected between the first shell side wall 432 and the second shell side wall 433. The first shell side wall 432 forms a device inlet 410, and the second shell side wall 433 forms a device outlet 420. The two third shell side walls are opposite to each other and spaced apart, and both third shell side walls are connected between the first shell side wall 432 and the second shell side wall 433. Both third shell side walls are connected to the top shell wall 431. The first partition structure 440, the top shell wall 431, the second shell side wall 433, and the two third shell side walls together define a second cavity 462.

[0044] The outer shell 430 may further include a bottom wall 434. The bottom wall 434, top wall 431, first side wall 432, second side wall 433, and two third side walls together define a separation chamber 460, which helps reduce the risk of vapor leakage or contamination of the vapor in the separation chamber 460 by external impurities. Simultaneously, the top wall 431, first side wall 432, first partition structure 440, second side wall 433, bottom wall 434, and two third side walls define a first cavity 461. The gas-liquid mixture entering the first chamber 461 from the fuel tank 510 can collide with the top wall 431, the first side wall 432, the second side wall 433, the bottom wall 434, and the two third side walls. The liquid fuel droplets in the gas-liquid mixture will be separated due to the collision force and gravity and stored in the first chamber 461. Under negative pressure or fuel sloshing conditions in the fuel tank 510, the liquid fuel droplets stored in the first chamber 461 can flow back from the first chamber 461 to the fuel tank 510, which helps to reduce fuel waste.

[0045] In some examples of embodiments of the present invention, such as Figure 1 As shown, the first shell sidewall 432 and the second shell sidewall 433 are opposite each other along the first direction, forming an acute angle between the first direction and the vertical direction, and along the vertical direction, the installation height of the device inlet 410 is lower than the installation height of the device outlet 420.

[0046] Among them, such as Figure 1 As shown, the first direction is defined as the X direction, and the vertical direction is defined as the Z direction. As an example, as... Figure 1 As shown, in the vertical direction, the one-way valve 442 can be positioned anywhere below the device outlet 420.

[0047] The first direction and the vertical direction form an acute angle, and the setting height of the device inlet 410 is lower than the setting height of the device outlet 420. This is beneficial for the fuel droplets in the first cavity 461 to flow naturally along the first shell sidewall 432 or the bottom of the first cavity 461 to the device inlet 410 side. It is also beneficial for the liquid fuel in the first cavity 461 to return smoothly to the fuel tank 510. This is also beneficial for reducing the risk of fuel droplets accumulating in the first cavity 461 and clogging the gas-liquid separator 400.

[0048] In some examples of embodiments of the present invention, such as Figure 1 As shown, the gas-liquid separation device 400 further includes: a second partition structure 450, which is fixedly disposed in the first cavity 461. The second partition structure 450 divides the first cavity 461 into a first sub-cavity 463 and a second sub-cavity 464 that are connected. The first sub-cavity 463 is connected to the device inlet 410. The second sub-cavity 464 is located below the second cavity 462 and corresponds to the one-way valve 442. The one-way valve 442 can connect the second sub-cavity 464 and the second cavity 462.

[0049] In one embodiment, the second partition structure 450 can be fixedly connected to the first partition structure 440 and the second shell sidewall 433. The second sub-cavity 464 is located below the second cavity 462 and corresponds to the one-way valve 442, which facilitates the direct entry of vapor in the second sub-cavity 464 into the second cavity 462 through the one-way valve 442, thus optimizing the vapor flow path. The second sub-cavity 464 is located below the second cavity 462 and is connected to the second cavity 462, allowing liquid fuel intercepted by the one-way valve 442 to temporarily accumulate in the second sub-cavity 464.

[0050] Because the second partition structure 450 divides the first cavity 461 into a connected first sub-cavity 463 and a second sub-cavity 464, the liquid fuel intercepted by the one-way valve 442 and accumulated in the second sub-cavity 464 can flow back to the first sub-cavity 463, and then flow back to the fuel tank 510 through the device inlet 410 along the first pipeline 200, which further helps to reduce fuel waste.

[0051] In some examples of embodiments of the present invention, such as Figure 1 As shown, the second partition structure 450 has a drain port 451, which connects the second sub-cavity 464 and the first sub-cavity 463.

[0052] In one embodiment, the second partition structure 450 may have an air inlet. Vapor in the first sub-cavity 463 can flow into the second sub-cavity 464 through the air inlet. Liquid fuel intercepted by the one-way valve 442 in the second sub-cavity 464 can flow back to the first sub-cavity 463 through the drain port 451, and finally flow back to the fuel tank 510 through the device inlet 410.

[0053] The drain port 451 connects the second sub-cavity 464 and the first sub-cavity 463, allowing the liquid fuel accumulated in the second sub-cavity 464 to flow back to the first sub-cavity 463 through the drain port 451, which helps reduce the risk of liquid fuel remaining in the second sub-cavity 464. The second separation structure 450 directly forms the drain port 451, eliminating the need for an additional drain structure or manual periodic cleaning of the oil accumulation in the second sub-cavity 464. This reduces the number of parts in the gas-liquid separator 400 and also reduces the frequency of maintenance.

[0054] In some examples of embodiments of the present invention, such as Figure 1 As shown, the outer shell 430 is a transparent structure; and at least one of the separation structure body 441 and the second partition structure 450 is a transparent structure.

[0055] In one embodiment, the separation structure body 441 is transparent. In another embodiment, the second partition structure 450 is transparent. In yet another embodiment, both the separation structure body 441 and the second partition structure 450 are transparent. The outer shell 430 is transparent, and at least one of the separation structure body 441 and the second partition structure 450 is transparent. This allows employees to directly observe the amount of liquid fuel accumulated in the first sub-cavity 463 and the second sub-cavity 464, as well as whether the liquid fuel in the first sub-cavity 463 and the second sub-cavity 464 is flowing back smoothly. This facilitates timely diagnosis and maintenance of the gas-liquid separator 400.

[0056] When the fuel vapor pressure inside the fuel tank 510 increases, or when the fuel tank 510 shakes during vehicle operation, causing the gas-liquid mixture to flow, the fuel vapor mixed with liquid fuel droplets will flow through the first pipe 200 and from the device inlet 410 of the gas-liquid separator 400 into the first sub-cavity 463. After the gas-liquid mixture enters the first sub-cavity 463, it will collide with the top wall 431, the first side wall 432, the second side wall 433, and the third side wall of the outer shell 430. The liquid fuel droplets are initially separated due to the collision force and gravity.

[0057] The vapor in the first sub-cavity 463 can flow to the second sub-cavity 464. The fuel vapor in the second sub-cavity 464 can enter the second sub-cavity 464 through the one-way valve 442, and the liquid fuel will be intercepted in the second sub-cavity 464 by the one-way valve 442. The liquid fuel in the second sub-cavity 464 can flow back to the first sub-cavity 463 through the drain port 451, and then flow back to the fuel tank 510 through the device inlet 410.

[0058] The vapor entering the second chamber 462 can be transported to the fuel adsorption structure 520 via the second pipe 300. The fuel adsorption structure 520 can adsorb and store the fuel vapor. When the engine 700 starts and is under suitable operating conditions, the engine 700 can apply negative pressure to the fuel adsorption structure 520 via the fifth pipe 830 to trigger the desorption process. The fuel vapor adsorbed in the fuel adsorption structure 520 can be transported to the combustion chamber of the engine 700 via the fifth pipe 830. The filter device 900 can introduce filtered air into the fuel adsorption structure 520 via the sixth pipe 840, and then transport it to the combustion chamber of the engine 700 via the fifth pipe 830 to participate in combustion.

[0059] like Figure 1 As shown, according to a second aspect embodiment of the present invention, the fuel system includes: a fuel tank 510 and a fuel adsorption structure 520; and an inventive fuel evaporation pipeline device 100, which is the inventive fuel evaporation pipeline device 100 in the above embodiment, the inventive fuel evaporation pipeline device 100 being located above the fuel tank 510, a first pipeline 200 connecting the device inlet 410 and the fuel tank 510, and a second pipeline 300 connecting the device outlet 420 and the fuel adsorption structure 520.

[0060] By installing the fuel evaporation pipeline device 100 in the fuel system, it is beneficial to reduce the amount of liquid fuel flowing into the fuel adsorption structure 520, thereby reducing the risk of the fuel adsorption structure 520 becoming saturated and failing due to contamination by liquid fuel, and thus optimizing the performance of the fuel system.

[0061] like Figure 1As shown, according to a third aspect embodiment of the present invention, the vehicle includes: an engine 700; a fuel system, the fuel system being the same as that described in the above embodiment, a fuel tank 510 connected to the engine 700 to supply fuel to the engine 700, and a fuel adsorption structure 520 connected to the engine 700 to allow fuel in the fuel adsorption structure 520 to flow into the engine 700. By incorporating the fuel system into the vehicle, it is beneficial to optimize the performance of the fuel system, reduce the occurrence of problems such as automatic refueling nozzle tripping, increased fuel consumption, and excessive emissions, and improve the driving experience of the vehicle.

[0062] The fuel evaporation pipeline device 100, fuel system, and other components and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fuel evaporation pipeline device, characterized in that, include: A first pipeline (200), a second pipeline (300), and a gas-liquid separator (400) are provided. The gas-liquid separator (400) includes a device inlet (410) and a device outlet (420). The first pipeline (200) is used to connect the device inlet (410) and the fuel tank (510) of the fuel system. The second pipeline (300) is used to connect the device outlet (420) and the fuel adsorption structure (520) of the fuel system. The gas-liquid separator (400) is configured to connect the first pipeline (200) and the second pipeline (300), and is also configured to allow vapor to pass through so that vapor flows into the fuel adsorption structure (520) along the second pipeline (300).

2. The fuel evaporation pipeline device according to claim 1, characterized in that, The gas-liquid separation device (400) includes: a housing (430) and a first partition structure (440). The housing (430) defines a separation chamber (460) and forms the device inlet (410) and the device outlet (420). The first partition structure (440) is disposed in the separation chamber (460) and fixed to the housing (430). The first partition structure (440) divides the separation chamber (460) into a first cavity (461) and a second cavity (462). The first cavity (461) is connected to the device inlet (410), and the second cavity (462) is connected to the device outlet (420). The first partition structure (440) is configured to allow vapor in the first cavity (461) to flow into the second cavity (462).

3. The fuel evaporation pipeline device according to claim 2, characterized in that, The first separation structure (440) includes a separation structure body (441) and a one-way valve (442). The separation structure body (441) divides the separation chamber (460) into a first chamber (461) and a second chamber (462). The one-way valve (442) is provided on the separation structure body (441) so that the vapor in the first chamber (461) can flow into the second chamber (462).

4. The fuel evaporation pipeline device according to claim 2 or 3, characterized in that, The outer shell (430) includes: a top shell wall (431), a first shell side wall (432), a second shell side wall (433), and two third shell side walls. The first shell side wall (432) and the second shell side wall (433) are opposite to each other and spaced apart. The top shell wall (431) is connected between the first shell side wall (432) and the second shell side wall (433). The first shell side wall (432) forms the device inlet (410), and the second shell side wall (433) forms the device outlet (420). The two third shell side walls are opposite to each other and spaced apart. Both third shell side walls are connected between the first shell side wall (432) and the second shell side wall (433), and both third shell side walls are connected to the top shell wall (431). The first partition structure (440), the top shell wall (431), the second shell side wall (433), and the two third shell side walls together define the second cavity (462).

5. The fuel evaporation pipeline device according to claim 4, characterized in that, The first shell sidewall (432) and the second shell sidewall (433) are opposite each other along a first direction, forming an acute angle between the first direction and the vertical direction, and along the vertical direction, the device inlet (410) is set at a height lower than the device outlet (420).

6. The fuel evaporation pipeline device according to claim 3, characterized in that, The gas-liquid separation device (400) further includes: a second partition structure (450), which is fixedly disposed in the second cavity (462). The second partition structure (450) divides the second cavity (462) into a first sub-cavity (463) and a second sub-cavity (464) that are connected. The first sub-cavity (463) is connected to the device inlet (410). The second sub-cavity (464) is located below the second cavity (462) and corresponds to the one-way valve (442). The one-way valve (442) can connect the second sub-cavity (464) and the second cavity (462).

7. The fuel evaporation pipeline device according to claim 6, characterized in that, The second partition structure (450) has a drain port (451) that connects the second sub-cavity (464) and the first sub-cavity (463).

8. The fuel evaporation pipeline device according to claim 6, characterized in that, The outer shell (430) is a transparent structure; and At least one of the separation structure body (441) and the second separation structure (450) is the transparent structure.

9. A fuel system, characterized in that, include: Fuel tank (510) and fuel adsorption structure (520); An invention fuel evaporation pipeline device (100) is provided, wherein the invention fuel evaporation pipeline device (100) is as described in any one of claims 1-8, the invention fuel evaporation pipeline device (100) is located above the fuel tank (510), the first pipeline (200) connects the device inlet (410) and the fuel tank (510), and the second pipeline (300) connects the device outlet (420) and the fuel adsorption structure (520).

10. A vehicle, characterized in that, include: Engine (700); The fuel system is the fuel system according to claim 9, wherein the fuel tank (510) is connected to the engine (700) to supply fuel to the engine (700), and the fuel adsorption structure (520) is connected to the engine (700) to allow the fuel in the fuel adsorption structure (520) to flow into the engine (700).

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