A tank isolation valve, tank system and vehicle

Abstract

The application provides an oil tank isolation valve, an oil tank system and a vehicle. The oil tank isolation valve comprises a main body part, a first mounting part and a second mounting part. The first mounting part and the second mounting part are connected to the main body part. The first mounting part and the second mounting part are located on both sides of the center surface of the main body part along the left-right direction. When the oil tank isolation valve is installed on the left side or the right side of the oil tank, one of the first mounting part and the second mounting part faces the oil tank and can be connected to the oil tank through a fixing support. The oil tank isolation valve does not need to be turned over, the carbon can connecting pipeline does not need to be bent, and the air passage resistance is reduced. When the oil tank isolation valve is installed on the left side or the right side of the oil tank, the fixing support is located between the oil tank isolation valve and the oil tank. The fixing support does not need to be provided with a cantilever structure, the structure of the fixing support is simplified, the space occupation is reduced, the cost is reduced, the reliability, durability and NVH risk that may exist are solved, the oil tank isolation valve is located on the side far away from the oil tank of the fixing support, and the oil tank isolation valve is more convenient to assemble and disassemble and is convenient to maintain.

Description

Technical Field

[0001] This application relates to the field of isolation valve technology, specifically to a fuel tank isolation valve, a fuel tank system, and a vehicle. Background Technology

[0002] With the development of new energy vehicles, hybrid vehicles are increasingly recognized by the market due to their advantages such as low fuel consumption, long range, and superior power. Under current emission regulations, hybrid vehicles need to use high-pressure fuel tanks, which require a fuel tank isolation valve to confine fuel vapors within the tank. Therefore, the fuel tank isolation valve is generally located between the fuel tank and the charcoal canister. Considering integration, the fuel tank isolation valve is generally located on the fuel tank. The specific location of the fuel tank isolation valve on the fuel tank side depends on the location of the charcoal canister. Currently, the mainstream location for the charcoal canister is either the left or right rear wheel arch. Therefore, the fuel tank isolation valve is generally located on the left or right side of the fuel tank.

[0003] The related technology's tank isolation valve has a fixed surface on one side, meaning the tank isolation valve is suitable for connection to one side of the tank. If the same tank isolation valve is connected to the other side of the tank, there are two connection schemes:

[0004] In the first connection scheme, the fuel tank isolation valve is rotated 180° so that its fixed surface faces the fuel tank. However, this connection scheme has a U-shaped design in the charcoal canister connection pipeline connecting the fuel tank isolation valve, which is long, costly, occupies a lot of space, and has high air resistance, affecting the smoothness of refueling.

[0005] In the second connection scheme, the mounting surface of the tank isolation valve faces away from the tank. However, in this connection scheme, the mounting bracket needs to be designed on the outside of the tank isolation valve. The mounting bracket occupies a large space and has poor maintainability. In addition, the mounting bracket has a complex structure, a long cantilever structure, high cost, poor reliability, and poses risks to durability and NVH.

[0006] It is evident that the relevant technology of tank isolation valves is only applicable to one side of the tank, with poor interchangeability. To achieve dual-sided arrangement, two different types of tank isolation valves need to be designed, resulting in a wide variety of tank isolation valves and increasing management and after-sales maintenance costs. Utility Model Content

[0007] The purpose of this application is to provide a fuel tank isolation valve, a fuel tank system, and a vehicle, which allows the fuel tank isolation valve to be arranged arbitrarily on the side of the fuel tank, and the fixed bracket and connecting pipeline structure is simple, occupies little space, has low cost, and has no reliability, durability, or NVH risks.

[0008] To solve the above-mentioned technical problems, this application provides a tank isolation valve, including a main body, a first mounting part and a second mounting part, both of which are connected to the main body and are located on both sides of the center plane of the main body in the left-right direction.

[0009] The fuel tank isolation valve of this application includes a first mounting part and a second mounting part, which are located on the left and right sides of the main body. Thus, when the fuel tank isolation valve is installed on the left side of the fuel tank, the fuel tank isolation valve can be connected to a fixed bracket through one of the first mounting part and the second mounting part. The fixed bracket is connected to the left side wall of the fuel tank, thereby fixing the fuel tank isolation valve and the fuel tank. The fixed bracket is located between the fuel tank isolation valve and the fuel tank. When the fuel tank isolation valve is installed on the right side of the fuel tank, the fuel tank isolation valve can be connected to the fixed bracket through the other of the first mounting part and the second mounting part. The fixed bracket is connected to the right side wall of the fuel tank, thereby fixing the fuel tank isolation valve and the fuel tank. The fixed bracket is located between the fuel tank isolation valve and the fuel tank.

[0010] Therefore, when the tank isolation valve of this application is installed on the left or right side of the tank, one of the first and second mounting parts faces the tank and can be connected to the tank via a fixed bracket. This eliminates the need to flip the tank isolation valve, and the charcoal canister connection pipe connecting the tank isolation valve does not need to be bent, reducing the length of the charcoal canister connection pipe, lowering costs, reducing air resistance, and ensuring smooth refueling. Simultaneously, when the tank isolation valve is installed on the left or right side of the tank, the fixed bracket is always located between the tank isolation valve and the tank. On one hand, the fixed bracket does not require a cantilever structure, simplifying its structure, reducing its space occupation, lowering costs, and addressing potential reliability, durability, and NVH risks. On the other hand, the tank isolation valve is always located on the side of the fixed bracket furthest from the tank, making installation and disassembly of the tank isolation valve more convenient and facilitating maintenance.

[0011] Furthermore, the tank isolation valve of this application is suitable for installation on either side of the tank, eliminating the need to design two types of tank isolation valves. This facilitates the platform-based design of tank isolation valves, reduces the variety of tank isolation valves, and lowers management and after-sales maintenance costs.

[0012] Optionally, the first mounting portion and the second mounting portion are symmetrically arranged about the center plane of the main body in the left-right direction.

[0013] Optionally, both the first mounting portion and the second mounting portion include a flat portion and a protrusion, the protrusion being connected to one side of the flat portion, and the end face of the protrusion away from the flat portion forming a mounting surface.

[0014] Optionally, the first mounting portion and the second mounting portion further include reinforcing ribs, which are connected to the flat plate portion.

[0015] Optionally, the reinforcing rib and the protrusion are located on the same side of the flat plate, and the height of the reinforcing rib is not greater than the height of the protrusion.

[0016] Optionally, the flat plate portions of the first mounting portion and the second mounting portion are an integral structure, and the protrusions of the first mounting portion and the second mounting portion are located on opposite sides of the integral structure.

[0017] Optionally, the main body includes an oil tank connecting pipe and a charcoal canister connecting pipe, the axes of the oil tank connecting pipe and the charcoal canister connecting pipe are parallel, the plane containing the axes of the oil tank connecting pipe and the charcoal canister connecting pipe is a first plane, the center plane of the integral structure along the thickness direction is a second plane, and the first plane and the second plane coincide.

[0018] This application also provides a fuel tank system, including a fuel tank, a charcoal canister, and the aforementioned fuel tank isolation valve, wherein the fuel tank isolation valve is connected between the fuel tank and the charcoal canister.

[0019] The fuel tank system of this application includes the aforementioned fuel tank isolation valve, and therefore has the same technical effect as the aforementioned fuel tank isolation valve, which will not be described again here.

[0020] Optionally, the fuel tank system further includes a fixed bracket connected to the left or right side of the fuel tank, the fixed bracket being connected to the first or second mounting part of the fuel tank isolation valve, and the fixed bracket being located between the fuel tank and the fuel tank isolation valve.

[0021] This application also provides a vehicle including the aforementioned fuel tank system.

[0022] The vehicle in this application includes the aforementioned fuel tank system, and therefore has the same technical effect as the aforementioned fuel tank system, which will not be repeated here. Attached Figure Description

[0023] Figure 1 A schematic diagram of one side of a specific embodiment of the tank isolation valve provided in this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure on the opposite side of the fuel tank isolation valve;

[0025] Figure 3 This is a schematic diagram of a specific embodiment of the fuel tank system provided in this application;

[0026] in, Figures 1-3 The accompanying figure labels are as follows:

[0027] 1-Main body; 11-Fuel tank connecting pipe; 12-Charcoal canister connecting pipe;

[0028] 2A - First mounting part; 2B - Second mounting part; 21 - Flat plate part; 22 - Protrusion part; 23 - Reinforcing rib; 2a - Mounting surface. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of one side of a specific embodiment of the tank isolation valve provided in this application; Figure 2 for Figure 1 A schematic diagram of the structure on the opposite side of the oil tank isolation valve.

[0031] This embodiment provides an oil tank isolation valve 01, including a main body 1, a first mounting part 2A and a second mounting part 2B. The first mounting part 2A and the second mounting part 2B are both connected to the main body 1. The first mounting part 2A and the second mounting part 2B are located on both sides of the center plane of the main body 1 in the left-right direction.

[0032] When the fuel tank isolation valve 01 is installed on the vehicle body, the direction closer to the left side of the vehicle body is defined as left, and the direction closer to the right side of the vehicle body is defined as right.

[0033] In this embodiment, the tank isolation valve 01 includes a first mounting part 2A and a second mounting part 2B. The first mounting part 2A and the second mounting part 2B are located on opposite sides of the center plane of the main body 1 in the left-right direction. Thus, when the tank isolation valve 01 is installed on the left side of the tank, the tank isolation valve 01 can be connected to a fixed bracket through one of the first mounting part 2A and the second mounting part 2B. The fixed bracket is connected to the left side wall of the tank, thereby fixing the tank isolation valve 01 to the tank. The fixed bracket is located between the tank isolation valve 01 and the tank. When the tank isolation valve 01 is installed on the right side of the tank, the tank isolation valve 01 can be connected to a fixed bracket through the other of the first mounting part 2A and the second mounting part 2B. The fixed bracket is connected to the right side wall of the tank, thereby fixing the tank isolation valve 01 to the tank. The fixed bracket is located between the tank isolation valve 01 and the tank.

[0034] Therefore, when the fuel tank isolation valve 01 is installed on the left or right side of the fuel tank in this embodiment, one of the first mounting part 2A and the second mounting part 2B faces the fuel tank and can be connected to the fuel tank through the fixed bracket. There is no need to flip the fuel tank isolation valve 01, and the charcoal canister connection pipeline connected to the fuel tank isolation valve 01 does not need to be bent, reducing the length of the charcoal canister connection pipeline, reducing costs, reducing air resistance, and ensuring smooth refueling. At the same time, when the fuel tank isolation valve 01 is installed on the left or right side of the fuel tank in this embodiment, the fixed bracket is always located between the fuel tank isolation valve 01 and the fuel tank. On the one hand, the fixed bracket does not need to be equipped with a cantilever structure, simplifying the structure of the fixed bracket, reducing the space occupied by the fixed bracket, reducing costs, and solving potential reliability, durability, and NVH risks. On the other hand, the fuel tank isolation valve 01 is always located on the side of the fixed bracket away from the fuel tank, making the installation and disassembly of the fuel tank isolation valve 01 more convenient and facilitating maintenance of the fuel tank isolation valve 01.

[0035] Furthermore, the oil tank isolation valve 01 in this embodiment is suitable for installation on either side of the oil tank, eliminating the need to design two types of oil tank isolation valves 01. This facilitates the platform-based design of the oil tank isolation valve 01, reduces the variety of oil tank isolation valves 01, and lowers management and after-sales maintenance costs.

[0036] Furthermore, in this embodiment, the first mounting part 2A and the second mounting part 2B are symmetrically arranged about the center plane of the main body part 1 in the left-right direction.

[0037] Thus, in this embodiment, when the tank isolation valve 01 is installed on the left or right side of the tank, the tank isolation valve 01 only moves in the left and right directions. Other components connected to the tank isolation valve 01, such as the fixed bracket, the charcoal canister connection pipeline, and the tank connection pipeline, also only move in the left and right directions. There is no need to modify the structure of other components connected to the tank isolation valve 01, reducing the types of parts and lowering management and after-sales maintenance costs.

[0038] Please continue to refer to this. Figure 1 and Figure 2 In this embodiment, both the first mounting part 2A and the second mounting part 2B include a flat plate part 21 and a protrusion part 22. The protrusion part 22 is connected to one side of the flat plate part 21, and the end face of the protrusion part 22 away from the flat plate part 21 forms a mounting surface 2a.

[0039] As configured above, the mounting surface 2a is used to connect with the fixed bracket. Since the mounting surface 2a is formed on the end face of the protrusion 22 away from the flat plate 21, there is a gap between the mounting surface 2a and the corresponding side wall of the flat plate 21, and there is a gap between the fixed bracket and the opposite side wall of the flat plate 21. This avoids the flat plate 21 interfering with the connection between the fixed bracket and the mounting surface 2a, and ensures a smooth connection between the fixed bracket and the mounting surface 2a.

[0040] Please continue to refer to this. Figure 1and Figure 2 The first mounting part 2A and the second mounting part 2B also include a reinforcing rib 23, which is connected to the flat plate part 21.

[0041] Thus, the setting of the reinforcing rib 23 is beneficial to improve the structural strength and rigidity of the mounting part 2 and the mounting surface 2a without increasing the thickness of the flat plate part 21, ensuring the structural stability and reliability of the mounting part 2, ensuring the connection stability and reliability between the mounting part 2 and the fixed bracket, and saving materials, reducing production costs, and improving economic efficiency.

[0042] Furthermore, in this embodiment, the reinforcing rib 23 and the protrusion 22 are located on the same side of the flat plate portion 21, and the height of the reinforcing rib 23 is not greater than the height of the protrusion 22.

[0043] As set above, the height of the reinforcing rib 23 is not greater than the height of the protrusion 22. That is, the end face of the reinforcing rib 23 away from the flat plate 21 is closer to the corresponding side wall of the flat plate 21 than the end face of the protrusion 22 away from the flat plate 21. In this way, when the mounting surface 2a and the fixed bracket are connected, there is a gap between the end face of the reinforcing rib 23 away from the flat plate 21 and the fixed bracket, so as to avoid the reinforcing rib 23 interfering with the fixed bracket and ensure a reliable connection between the fixed bracket and the mounting surface 2a.

[0044] Please continue to refer to this. Figure 1 and Figure 2 In this embodiment, the flat plate portion 21 of the first mounting portion 2A and the second mounting portion 2B is an integral structure, and the protrusion portion 22 of the first mounting portion 2A and the second mounting portion 2B is located on opposite sides of the integral structure.

[0045] In other words, in this embodiment, the first mounting part 2A and the second mounting part 2B share the same flat plate 21, and the protrusions 22 of the first mounting part 2A and the second mounting part 2B are provided on the same flat plate 21, which helps to simplify the structure of the oil tank isolation valve 01 and reduce costs.

[0046] Furthermore, in this embodiment, the main body 1 includes an oil tank connecting pipe 11 and a charcoal canister connecting pipe 12. The axes of the oil tank connecting pipe 11 and the charcoal canister connecting pipe 12 are parallel. The plane containing the axes of the oil tank connecting pipe 11 and the charcoal canister connecting pipe 12 is a first plane. The center plane of the integral structure along the thickness direction is a second plane. The first plane and the second plane coincide.

[0047] As shown above, the integrated structure is symmetrical about the second plane, and the fuel tank connecting pipe 11 and the charcoal canister connecting pipe 12 are symmetrical about the first plane. Since the first plane and the second plane coincide, the integrated structure, the fuel tank connecting pipe 11, and the charcoal canister connecting pipe 12 are all symmetrical about the same plane, which helps to reduce the size of the fuel tank isolation valve 01 in the left and right directions and reduce the space occupied by the fuel tank isolation valve 01 in the left and right directions.

[0048] Please refer to Figure 3 , Figure 3 This is a schematic diagram of a specific embodiment of the fuel tank system provided in this application.

[0049] This embodiment also provides a fuel tank system, including a fuel tank 02, a charcoal canister, and the aforementioned fuel tank isolation valve 01, wherein the fuel tank isolation valve 01 is connected between the fuel tank 02 and the charcoal canister.

[0050] The fuel tank system of this embodiment includes the aforementioned fuel tank isolation valve 01, and therefore has the same technical effect as the aforementioned fuel tank isolation valve 01, which will not be repeated here.

[0051] The oil tank isolation valve 01 includes an oil tank connecting pipe 11 and a charcoal canister connecting pipe 12. The free end of the oil tank connecting pipe 11 forms an oil tank connection port, which is connected to the oil tank connecting pipeline. The free end of the charcoal canister connecting pipe 12 forms a charcoal canister connection port, which is connected to the charcoal canister connecting pipeline.

[0052] Furthermore, the fuel tank system also includes a fixed bracket 03, which is connected to the left or right side of the fuel tank 02. The fixed bracket 03 is connected to the first mounting part 2A or the second mounting part 2B of the fuel tank isolation valve 01, and the fixed bracket 03 is located between the fuel tank 02 and the fuel tank isolation valve 01.

[0053] As configured above, in this embodiment, the same fixed bracket 03 can be used for installation on either the left or right side of the fuel tank isolation valve 01. This facilitates a platform-based design for the fixed bracket 03, reduces the variety of fixed brackets, and lowers management and after-sales maintenance costs. Furthermore, when the fuel tank isolation valve 01 is connected to either its left or right side, the fixed bracket 03 is always located between the fuel tank isolation valve 01 and the fuel tank. The fixed bracket 03 does not require a cantilever structure, simplifying its structure, reducing its space requirements, lowering costs, and mitigating potential reliability, durability, and NVH risks. On the other hand, since the fuel tank isolation valve 01 is always located on the side of the fixed bracket 03 furthest from the fuel tank 02, the installation and disassembly of the fuel tank isolation valve 01 are more convenient, facilitating maintenance.

[0054] Depend on Figure 3As can be seen, in this embodiment, the fuel tank 02 and the fixed bracket 03 are respectively provided with a first connecting plate and a second connecting plate. The first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole. The fuel tank system also includes a connector. The connector passes through the corresponding first connecting hole and second connecting hole to fix the fuel tank 02 and the fixed bracket 03. The connection is reliable and easy to disassemble and assemble.

[0055] The connector can be a structure of connecting bolt and fixing nut. Specifically, the shank of the connecting bolt passes through the first connecting hole and the second connecting hole from top to bottom. The head of the connecting bolt abuts against the side wall of the first connecting plate facing away from the second connecting plate. The fixing nut is screwed to the shank of the connecting bolt. The fixing nut abuts against the side wall of the second connecting plate facing away from the first connecting plate, thereby realizing the fixed connection between the first connecting plate and the second connecting plate.

[0056] Depend on Figure 3 As can be seen, in this embodiment, the fuel tank 02 has two spaced-apart first connecting plates, and the fixed bracket 03 has two spaced-apart second connecting plates. The fuel tank 02 and the fixed bracket 03 are fixed by two connecting members. Thus, the fuel tank 02 and the fixed bracket 03 have two fixing points, which helps to improve the connection stability and reliability of the fuel tank 02 and the fixed bracket 03.

[0057] The connection method of the first connecting plate and the second connecting plate is not limited. For example, in some embodiments, it is also feasible to fix the first connecting plate and the second connecting plate by snapping or welding.

[0058] Furthermore, such as Figures 1-3 As shown, in this embodiment, the mounting part 2 has a first through hole that passes through the flat plate part 21 and the protrusion part 22, and the fixing bracket 03 has a second through hole. In the connected state, the connector passes through the first through hole and the second through hole in sequence to fix the fixing bracket 03 and the mounting part 2. The connection is reliable and easy to disassemble and assemble.

[0059] Similarly, the connector can be a structure of connecting bolt and fixing nut. Specifically, the shank of the connecting bolt passes through the second through hole and the first through hole in sequence, and the head of the connecting bolt abuts against the side wall of the fixing bracket 03 facing away from the oil tank isolation valve 01. The fixing nut is screwed to the shank of the connecting bolt, and the fixing nut abuts against the mounting surface 2a, thereby fixing the fixing bracket 03 and the mounting part 2.

[0060] The connection method between the fixed bracket 03 and the mounting part 2 is not limited. For example, in some embodiments, it is also feasible to fix the fixed bracket 03 and the mounting part 2 by snapping or welding.

[0061] This embodiment also provides a vehicle including the aforementioned fuel tank system.

[0062] The vehicle in this embodiment includes the aforementioned fuel tank system, and therefore has the same technical effects as the aforementioned fuel tank system, which will not be repeated here.

[0063] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A tank isolation valve, characterized in that, It includes a main body (1), a first mounting part (2A) and a second mounting part (2B). The first mounting part (2A) and the second mounting part (2B) are both connected to the main body (1). The first mounting part (2A) and the second mounting part (2B) are located on both sides of the center plane of the main body (1) in the left-right direction. When the oil tank isolation valve (01) is installed on the oil tank (02), one of the first mounting part (2A) and the second mounting part (2B) faces the oil tank (02) and can be connected to the oil tank (02).

2. The tank isolation valve according to claim 1, characterized in that, The first mounting part (2A) and the second mounting part (2B) are symmetrically arranged about the center plane of the main body part (1) in the left-right direction.

3. The tank isolation valve according to claim 1 or 2, characterized in that, Both the first mounting portion (2A) and the second mounting portion (2B) include a flat portion (21) and a protrusion (22). The protrusion (22) is connected to one side of the flat portion (21), and the end face of the protrusion (22) away from the flat portion (21) forms a mounting surface (2a).

4. The tank isolation valve according to claim 3, characterized in that, The first mounting portion (2A) and the second mounting portion (2B) further include a reinforcing rib (23), which is connected to the flat plate portion (21).

5. The tank isolation valve according to claim 4, characterized in that, The reinforcing rib (23) and the protrusion (22) are located on the same side of the flat plate (21), and the height of the reinforcing rib (23) is not greater than the height of the protrusion (22).

6. The tank isolation valve according to claim 3, characterized in that, The flat plate portion (21) of the first mounting portion (2A) and the second mounting portion (2B) is an integral structure, and the protrusion portion (22) of the first mounting portion (2A) and the second mounting portion (2B) is located on opposite sides of the integral structure.

7. The tank isolation valve according to claim 6, characterized in that, The main body (1) includes an oil tank connecting pipe (11) and a charcoal canister connecting pipe (12). The axes of the oil tank connecting pipe (11) and the charcoal canister connecting pipe (12) are parallel. The plane containing the axis of the oil tank connecting pipe (11) and the axis of the charcoal canister connecting pipe (12) is a first plane. The center plane of the integral structure along the thickness direction is a second plane. The first plane and the second plane coincide.

8. A fuel tank system, characterized in that, It includes a fuel tank (02), a charcoal canister, and a fuel tank isolation valve (01) as described in any one of claims 1-7, the fuel tank isolation valve (01) being connected between the fuel tank (02) and the charcoal canister.

9. The fuel tank system according to claim 8, characterized in that, The fuel tank system also includes a fixed bracket (03), which is connected to the left or right side of the fuel tank (02). The fixed bracket (03) is connected to the first mounting part (2A) or the second mounting part (2B) of the fuel tank isolation valve (01). The fixed bracket (03) is located between the fuel tank (02) and the fuel tank isolation valve (01).

10. A vehicle, characterized in that, Includes the fuel tank system as described in claim 8 or 9.

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