Fuel Evaporation Treatment Device

Abstract

To allow the direction of a port to be changed easily, in an evaporated fuel treatment device in which an opening part and a lid part in a body case are fixed.SOLUTION: An evaporated fuel treatment device includes a body case and a lid part. The body case includes a plurality of adsorption chambers and an opening part. The adsorption chambers are constituted so as to store an adsorption material respectively. The lid part includes an object port which is one of a plurality of ports. The object port is constituted so as to guide a gas in the direction crossing the flow direction of the gas in the object adsorption chamber. By the lid part being rotated along the rotation direction before being mounted on the body case, one mounting angle is selected out of a plurality of mounting angles, and the lid part is mounted on the body case.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a fuel vapor treatment system. [Background technology]

[0002] For example, the following Patent Document 1 discloses an evaporated fuel treatment device having an opening in a main body case and a lid that closes the opening fixed by welding. A port configured to communicate between the inside and outside of the evaporated fuel treatment device is disposed in the lid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-120492 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, it is preferable that the orientation of the ports arranged in the evaporated fuel treatment device can be changed according to the specifications of the vehicle in which the evaporated fuel treatment device is mounted, etc. However, as a result of detailed consideration by the inventors, the configuration of the above-mentioned Patent Document 1 has a problem in that it is necessary to develop parts such as a lid and a manufacturing jig for each orientation of the port, and the port orientation cannot be easily changed.

[0005] One aspect of the present disclosure is to make it easier to change the orientation of a port in an evaporated fuel treatment device in which an opening in a main body case and a lid are fixed to each other. [Means for solving the problem]

[0006] One aspect of the present disclosure is an evaporated fuel treatment device having a plurality of ports. The evaporated fuel treatment device includes a main case and a cover. The main case includes a plurality of adsorption chambers and an opening. Each of the adsorption chambers is configured to house an adsorbent. The opening is configured to communicate a target adsorption chamber, which is one of the plurality of adsorption chambers, with the atmosphere.

[0007] The lid portion includes a target port that is one of the multiple ports. The lid portion is configured to be attached to a preset attachment surface of the main body case so as to close at least a portion of the opening. The target port is configured to guide gas in a direction intersecting the gas flow direction in the target adsorption chamber. The lid portion is rotated along a rotation direction before being attached to the main body case, and one attachment angle is selected from multiple attachment angles and attached to the main body case.

[0008] According to this configuration, the direction in which the target port guides the gas can be configured to change with the rotation of the lid, and the lid can select one of multiple mounting angles. Therefore, the orientation of the target port can be changed to multiple directions simply by setting the mounting angle of the lid. Therefore, in an evaporated fuel processing device in which the opening in the main body case and the lid are fixed, it is possible to easily change the orientation of the port.

[0009] One aspect of the present disclosure may further include a rotation suppression portion configured to suppress rotation of the lid portion attached to the main body case along the rotation direction. According to this configuration, the mounting angle of the lid portion can be set before mounting, and the lid portion can be configured to be prevented from rotating after mounting.

[0010] One aspect of the present disclosure may further include a plurality of first engagement portions and a plurality of second engagement portions. The first engagement portion is disposed on the main body case. The second engagement portion is disposed on the lid portion and configured to be able to engage with each of the plurality of first engagement portions. The plurality of first engagement portions and the plurality of second engagement portions may be disposed at positions that are rotationally symmetric when rotated along the rotation direction.

[0011] According to this configuration, the mounting angle of the cover portion can be set for each position at which the plurality of first engagement portions and the plurality of second engagement portions can engage with each other. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view showing an evaporated fuel treatment device according to an embodiment; [Diagram 2] FIG. 2 is a cross-sectional view of the evaporated fuel treatment device taken along line II-II of FIG. [Diagram 3] FIG. 3A is an enlarged cross-sectional view of the vicinity of the auxiliary chamber, and FIG. 3B is a right side view of the vicinity of the auxiliary chamber. [Figure 4] FIG. 4A is a perspective view when the installation angle of the lid is 180 degrees, FIG. 4B is a perspective view when the installation angle of the lid is 90 degrees, and FIG. 4C is a perspective view when the installation angle of the lid is -90 degrees. [Diagram 5] Figure 5A is an oblique view showing the first modified example of the evaporated fuel treatment device when the installation angle of the lid part is 0 degrees, Figure 5B is an oblique view when the installation angle of the lid part is 180 degrees, Figure 5C is an oblique view when the installation angle of the lid part is -90 degrees, and Figure 5D is an oblique view when the installation angle of the lid part is 90 degrees. [Figure 6] FIG. 6A is a perspective view showing an evaporated fuel treatment device of a second modified example, and FIG. 6B is a perspective view showing an evaporated fuel treatment device of a third modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. [1. Embodiment] [1-1. Configuration] 1 to 3 has a function as a known canister. That is, it has a function of adsorbing and desorbing evaporated fuel generated in a fuel tank (not shown) of a vehicle. The evaporated fuel processing device 1A includes a main body case 2 and a lid portion 70.

[0014] The main case 2 is a case that forms an internal space. The main case 2 is made of, for example, a synthetic resin. However, the material of the main case 2 is not limited to this. The main body case 2 includes a charge port 21, a purge port 22, an atmospheric port 23 (corresponding to an example of a target port), and an auxiliary chamber 60. The ports 21 to 23 are arranged on the same side of the main body case 2 (for example, the upper side in FIG. 1). Furthermore, the ports 21 to 23 are set to face in the same direction. The port direction is the direction in which gas discharged from the port is guided.

[0015] The gas referred to here is a gas that flows inside the evaporated fuel processing device 1A and may include air and evaporated fuel. Hereinafter, the side of the main case 2 on which the charge port 21, the purge port 22, and the atmospheric port 23 are provided will be referred to as the port side. The main case 2 has an opening 26 on the side opposite the port side. The opening 26 is closed by a cap 27 that functions as a lid.

[0016] The charge port 21 is connected to a fuel tank of the vehicle by a pipe, and is configured to take in the evaporated fuel generated in the fuel tank into the evaporated fuel processing device 1A.

[0017] The purge port 22 is connected to an intake pipe (not shown) of an engine of a vehicle via a purge valve. The purge port 22 is configured to discharge the evaporated fuel in the evaporated fuel processing device 1A from the evaporated fuel processing device 1A and supply it to the engine.

[0018] The atmospheric port 23 is disposed in the lid portion 70. The lid portion 70 includes a direction change portion 75, which will be described later, and the atmospheric port 23 is connected to the direction change portion 75 of the lid portion 70. The atmospheric port 23 is open to the atmosphere. The atmospheric port 23 releases gas from which the evaporated fuel has been removed into the atmosphere. The atmospheric port 23 also takes in external gas (i.e., purge gas) to desorb (i.e., purge) the evaporated fuel adsorbed by the evaporated fuel treatment device 1A.

[0019] As shown in FIG. 2, the internal space of the main body case 2 is partitioned into a first chamber 2A, a second chamber 2B, and a third chamber 2C. The first chamber 2A is, for example, substantially rectangular or cylindrical. The port side end of the first chamber 2A is connected to the charge port 21 and the purge port 22. A first filter 32 is disposed at the port side end of the first chamber 2A. A second filter 33 is disposed at the cap 27 side end of the first chamber 2A. An adsorbent 40 is disposed between the first filter 32 and the second filter 33. The adsorbent 40 is, for example, an aggregate of a plurality of pellets. The pellets are granular activated carbon. The pellets are produced by kneading powdered activated carbon with a binder and forming the mixture into a predetermined shape. Note that an adsorbent other than pellets, such as powdered activated carbon, may be disposed in the first chamber 2A.

[0020] The first chamber 2A is connected to the second chamber 2B at the end on the cap 27 side. Inside the main body case 2, gases such as gas containing evaporated fuel can travel between the first chamber 2A and the second chamber 2B. The second chamber 2B is a space having an elongated shape extending from the end on the cap 27 side to the atmospheric port 23. The second chamber 2B is, for example, substantially rectangular or cylindrical. The port side end of the second chamber 2B is connected to the third chamber 2C. A first filter 38 is disposed at the end on the cap 27 side of the second chamber 2B. A second filter 54 is disposed at the end on the port side of the second chamber 2B. An adsorbent 43 is disposed between the first filter 38 and the second filter 54 in the second chamber 2B. The adsorbent 43 may be the same type as the adsorbent 40, or may be a different type.

[0021] A third chamber 2C is formed in the sub-chamber 60. The third chamber 2C is a space adjacent to the second chamber 2B on the second filter 54 side. 3, the sub-chamber 60 includes a contact portion 61, a suction unit 62, a filter 63, an opening 65, a first engagement portion 66A, a holding portion 68, a stepped portion 68A, and a large diameter portion 69. The suction unit 62 is inserted from the opening 65 into the third chamber 2C.

[0022] The third chamber 2C in the auxiliary chamber 60 is configured to have a smaller volume (volume of the internal space and volume of the exterior) than the adjacent second chamber 2B. In other words, if the second chamber 2B is a main chamber with a relatively large volume, the third chamber 2C is an auxiliary chamber with a relatively small volume.

[0023] The abutment portion 61 is a portion against which the suction unit 62 inserted from the opening 65 into the third chamber 2C abuts. The abutment portion 61 holds the suction unit 62 by abutting against the suction unit 62. The abutment portion 61 is used to position the suction unit 62 so that a conversion space 64 is formed at the rear side (left side in FIG. 3) in the insertion direction of the suction unit 62. The conversion space 64 will be described later.

[0024] The adsorption unit 62 may be, for example, an activated carbon unit. Examples of the activated carbon unit include granular activated carbon, activated carbon formed into a monolith shape or honeycomb shape, and activated carbon fiber formed into a sheet shape, a rectangular parallelepiped shape, a cylindrical shape, a polygonal column shape, or the like. Note that the adsorption unit 62 may be in other forms as long as it is unitized.

[0025] In the first chamber 2A and the second chamber 2B, the main flow direction of the gas (hereinafter, simply referred to as the flow direction) is the direction from the first filter 32, 38 to the second filter 33, 54, or the opposite direction (i.e., the vertical direction indicated by the dashed arrow B in FIG. 2). However, the third chamber 2C is provided with a conversion space 64 in which the flow direction is converted, and the flow direction of the gas is converted to the direction toward the lid portion 70 or the opposite direction in the conversion space 64. That is, in the third chamber 2C, the flow direction is the direction from the conversion space 64 toward the lid portion 70, or the opposite direction (i.e., the horizontal direction indicated by the dashed arrow C in FIG. 2). In other words, the flow direction in the third chamber 2C intersects with the flow direction in the first chamber 2A and the second chamber 2B. That is, the flow direction in the third chamber 2C is the horizontal direction perpendicular to the vertical direction in FIG. 2.

[0026] The filter 63 is disposed on the lid 70 side (the right side in FIG. 3) of the suction unit 62. The suction unit 62 is configured so that the surface on the filter 63 side is flush with the mounting surface 69A, which is the surface of the step portion 68A on the lid 70 side. In other words, the height of the suction unit 62 along the insertion direction matches the height from the contact portion 61 in the auxiliary chamber 60 to the mounting surface 69A.

[0027] The filter 63 is set so as to receive a pressing force from the lid portion 70 when the lid portion 70 is attached to the auxiliary chamber portion 60. Thus, the suction unit 62 is held by the pressing force from the filter 63 and the reaction force from the contact portion 61 so as to be difficult to move.

[0028] The holding portion 68 is a portion that holds the outer periphery of the suction unit 62 in the insertion direction (for example, the top and bottom of the suction unit 62 in FIG. 3). The outer periphery around the insertion direction is, in other words, an outer periphery that is parallel to the gas flow direction in the suction unit 62. The inner surface of the holding portion 68 is configured in a cylindrical shape that follows the shape of the outer periphery of the suction unit 62. With this configuration, the outer periphery of the suction unit 62 around the insertion direction is configured to abut against the holding portion 68 of the main body case 2.

[0029] The large diameter portion 69 is disposed so as to surround the lid portion 70 at a position separated from the holding portion 68 on the opposite side to the suction unit 62 (i.e., on the outer circumferential side of the holding portion 68).

[0030] The stepped portion 68A is a portion that constitutes a step that connects the holding portion 68 and the large diameter portion 69. The stepped portion 68A constitutes a surface that is perpendicular to the holding portion 68 and the large diameter portion 69. The inner surface of the stepped portion 68A (the surface on the right side in FIG. 3 ) is a mounting surface 69A (joint surface) between the main body case 2 and the lid portion 70.

[0031] The opening 65 is a portion configured to communicate the third chamber 2C with the atmosphere. The opening 65 is an end portion of the large diameter portion 69 on the opposite side to the stepped portion 68A. The lid portion 70 closes at least a portion of the opening 65. As shown in Fig. 3, the lid portion 70 includes a disk-shaped main body portion 71, a pipe portion 72 connected to the main body portion 71, and a direction changing portion 75. The open end of the pipe portion 72 constitutes the atmospheric port 23.

[0032] A seal member 78 is disposed between the large diameter portion 69 on the outer periphery of the lid portion 70. In addition, in the lid portion 70, the atmospheric port 23 is configured to communicate with the main body case 2 via the direction change portion 75. The direction change portion 75 is substantially rectangular parallelepiped shaped, and a space for gas to flow therethrough is formed inside. One surface of the substantially rectangular parallelepiped shape of the direction change portion 75 faces the main body portion 71 (i.e., the substantially circular portion) of the lid portion 70, and the pipe portion 72 is disposed at any position among four side surfaces adjacent to this surface so that the atmospheric port 23 faces in a direction perpendicular to the side surface. In the direction change portion 75, the side surface on which the atmospheric port 23 is disposed and the direction of the atmospheric port 23 need only intersect, and do not need to be perpendicular. In addition, the direction change portion 75 is configured to connect the main body portion 71 of the lid portion 70B and the pipe portion 72 while ensuring airtightness.

[0033] The sealing member 78 is configured to close the entire circumference between the opening 65 and the lid portion 70. The sealing member 78 is an annular member. The annular shape includes a circle, an ellipse, a polygon, and the like, and is a shape that surrounds the entire circumference of the hole.

[0034] An O-ring, for example, can be used as the seal member 78. The seal member 78 closes the outer periphery of the lid part 70 at the opening 65 without leaving any gaps. However, the lid part 70 is provided with an atmospheric port 23 that communicates with the atmosphere. The opening 65 is in an open state at the atmospheric port 23.

[0035] An arbitrary module such as an ELCM (that is, an Evaporative Leak Check Module) may be connected to the atmospheric port 23. The ELCM is a module for performing a leak check of the evaporated fuel processing device 1A.

[0036] The lid portion 70 is configured to be fixed to the main body case 2 by a snap-fit ​​structure 80A (corresponding to an example of a rotation suppressing portion). The snap-fit ​​structure 80A is a structure that employs a method of fixing by fitting a convex portion into a concave portion using the elasticity of the material. In this embodiment, the lid portion 70 is attached to the main body case 2 by engaging the first engagement portion 66A with the second engagement portion 73A. The first engagement portion 66A is a concave portion arranged on the outer periphery of the large diameter portion 69 of the main body case 2. The second engagement portion 73A is a convex portion arranged on the outer periphery of the lid portion 70.

[0037] With this configuration, when the lid 70 is inserted along the large diameter portion 69, the second engagement portion 73A of the lid 70 is deflected toward the inner periphery. When the second engagement portion 73A fits into the first engagement portion 66A of the main body case 2, the deflection of that portion is released and the engagement state between the first engagement portion 66A and the second engagement portion 73A is maintained. In other words, the lid 70 is fixed to the main body case 2.

[0038] The snap-fit ​​structures 80A are arranged at positions that are rotationally symmetrical when the cover 70 rotates along the mounting surface 69A as the rotation direction R (see FIG. 3B). In the example of this embodiment, as shown in FIG. 3B, four snap-fit ​​structures 80A are provided. That is, the snap-fit ​​structures 80A are arranged at equal intervals every 90 degrees obtained by dividing 360 degrees by 4, which is the number of snap-fit ​​structures 80A. The four snap-fit ​​structures 80A are configured so that any first engagement portion 66A can be engaged with any of the second engagement portions 73A. In this embodiment, all the first engagement portions 66A have the same shape, and all the second engagement portions 73A are also configured to have the same shape.

[0039] Here, the atmospheric port 23 provided in the lid portion 70 is configured to guide the gas in a direction intersecting the gas flow direction in the third chamber 2C. In this embodiment, the atmospheric port 23 can be oriented in any direction along the mounting surface 69A between the lid portion 70 and the main body case 2.

[0040] Due to this configuration, the lid 70 can be rotated along the rotation direction R before being joined to the main case 2, so that one mounting angle can be selected from a plurality of mounting angles. The lid 70 is mounted to the main case 2 after the mounting angle is selected. The mounting angle is a rotation angle with respect to a reference direction (for example, an angle with a clockwise direction being positive). For example, as shown in FIG. 1, if the reference direction is a direction in which the atmospheric port 23 faces the same direction as the charge port 21 and the purge port 22, as shown in FIG. 4A, the mounting angle is 180 degrees. Also, as shown in FIG. 4B and FIG. 4C, when the atmospheric port 23 is rotated 90 degrees from the reference direction, the mounting angle is 90 degrees or -90 degrees. That is, in a configuration having four snap-fit ​​structures 80A, one mounting angle can be selected from four mounting angles.

[0041] The attached lid portion 70 is prevented from rotating along the rotation direction R by the snap-fit ​​structure 80A. Here, in the evaporated fuel processing device 1A, the lid portion 70 is attached to the main body case 2 while pressing the adsorption unit 62 via the filter 63. Therefore, the lid portion 70 and the adsorption unit 62 are disposed in close proximity to each other. In other words, the lid portion 70 is disposed on the movement path of the adsorption unit 62 when it moves toward the opening 65 (i.e., closer to the opening 65 than the adsorption unit 62). In other words, the lid portion 70 has a function of suppressing the movement of the adsorption unit 62 by pressing the adsorption unit 62 from the opening 65 side.

[0042] In the above embodiment, the snap-fit ​​structure 80A has a function of suppressing the rotation of the lid portion 70 after attachment, but a function of suppressing the rotation of the lid portion 70 after attachment may be provided using a structure other than the snap-fit ​​structure 80A. For example, a structure with a large frictional force such as an O-ring may be adopted to suppress the rotation of the lid portion 70 after attachment. Alternatively, the attachment surface 69A of the main body case 2 may be formed in a polygonal shape, and the lid portion 70 may be formed in a polygonal shape that matches the shape of the attachment surface 69A. In such a case, if the lid portion 70 can be fixed, the snap-fit ​​structure 80A may be unnecessary.

[0043] In the above embodiment, the cover 70 and the main body case 2 are assembled using the snap-fit ​​structure 80A, but the present invention is not limited to this structure. For example, a structure in which any one or more of the first engagement parts 66A and the second engagement parts 73A are engaged with each other, a structure using an adhesive, etc. may be adopted.

[0044] [1-2. Effects] According to the embodiment described above in detail, the following effects are achieved. (1a) The evaporated fuel processing device 1A includes a main case 2, a lid 70, and a plurality of ports 21-23. The main case 2 includes a plurality of adsorption chambers 2A-2C and an opening 65. The plurality of adsorption chambers 2A-2C are configured to accommodate an adsorbent, respectively. The opening 65 is configured to communicate a target adsorption chamber, which is one of the plurality of adsorption chambers 2A-2C, with the atmosphere. The lid 70 includes an atmospheric port 23, which is one of the plurality of ports 21-23. The lid 70 is configured to be mounted on a preset mounting surface 69A of the main case 2 so as to close at least a portion of the opening 65. The atmospheric port 23 is configured to guide gas in a direction intersecting the gas flow direction in the target adsorption chamber. The lid 70 is rotated along a rotation direction R before being mounted on the main case 2, and one mounting angle is selected from a plurality of mounting angles and mounted on the main case 2.

[0045] According to this configuration, the direction in which the atmospheric port 23 guides the gas can be configured to change with the rotation of the lid portion 70, and one of a number of mounting angles for the lid portion 70 can be selected. Thus, the orientation of the atmospheric port 23 can be changed to a number of directions simply by setting the mounting angle of the lid portion 70. Thus, in the evaporated fuel processing device 1A in which the opening 65 in the main body case 2 and the lid portion 70 are fixed, it is possible to easily change the orientation of the port.

[0046] (1b) One embodiment of the present disclosure further includes a snap-fit ​​structure 80A. The snap-fit ​​structure 80A is configured to prevent the lid portion 70 attached to the main body case 2 from rotating along the rotation direction R. According to such a configuration, the mounting angle of the lid portion 70 can be set before mounting, and the lid portion 70 can be configured to be prevented from rotating after mounting.

[0047] (1c) One aspect of the present disclosure may further include a plurality of first engagement portions 66A and a plurality of second engagement portions 73A. The plurality of first engagement portions 66A are disposed on the main body case 2. The plurality of second engagement portions 73A are disposed on the lid portion 70 and configured to be able to engage with the plurality of first engagement portions 66A, respectively. The plurality of first engagement portions 66A and the plurality of second engagement portions 73A may each be disposed at a position that is rotationally symmetric when rotated along the rotation direction R. According to such a configuration, the mounting angle of the cover portion 70 can be set for each position at which the plurality of first engagement portions 66A and the plurality of second engagement portions 73A can engage with each other.

[0048] 2. Other embodiments Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modified forms.

[0049] (2a) The snap-fit ​​structure 80A used in the above embodiment may have any shape. Also, any locking mechanism configured to fasten the lid 70 and the main case 2 together, other than the snap-fit ​​structure, may be used.

[0050] (2b) In the above embodiment, the auxiliary chamber 60 is configured so that the lid 70 is attached to the main body case 2 from the side farthest from the charge port 21 (the right side in FIG. 2) so as to approach the charge port 21, but this configuration is not limiting. For example, instead of the auxiliary chamber 60, an auxiliary chamber 60B may be provided as in a second modified evaporated fuel processing device 1B shown in FIGS. 5A to 5D. The auxiliary chamber 60B is configured so that the lid 70 is attached from the port side.

[0051] Even in this configuration, the lid 70 can select one mounting angle from a plurality of mounting angles. For example, if the reference direction is when the atmospheric port 23 faces the charge port 21 as shown in Fig. 5A, then when the atmospheric port 23 faces away from the charge port 21 as shown in Fig. 5B, the mounting angle is 180 degrees. Also, when the atmospheric port 23 is rotated 90 degrees from the reference direction as shown in Figs. 5C and 5D, the mounting angle is 90 degrees or -90 degrees.

[0052] (2c) In the above embodiment, the auxiliary chamber 60 has four first engagement parts 66A, and the lid part 70 has four second engagement parts 73A, so that the evaporated fuel processing device 1A has four snap-fit ​​structures 80A, but this configuration is not limited. For example, as in the evaporated fuel processing device 1C of the second modification shown in FIG. 6A, six snap-fit ​​structures 80A may be provided. That is, the auxiliary chamber 60C and the lid part 70C may be provided. The auxiliary chamber 60C has six first engagement parts 66A, and the lid part 70C has six second engagement parts 73A. The six snap-fit ​​structures 80A are arranged at 60 degree intervals and are all configured to have the same shape.

[0053] (2d) Similarly, for example, like an evaporated fuel treatment device 1D of a third modified example shown in Fig. 6B, three snap-fit ​​structures 80A may be provided. That is, an auxiliary chamber 60D and a lid portion 70D may be provided. The auxiliary chamber 60D has three first engagement portions 66A, and the lid portion 70D has three second engagement portions 73A. The three snap-fit ​​structures 80A are arranged at 120 degree intervals, and are all configured to have the same shape.

[0054] (2e) In the above embodiment, the multiple snap-fit ​​structures 80A are all configured to have the same shape, but this is not limited to this configuration. The multiple first engagement portions 66A may be configured to have any shape as long as they can engage with the multiple second engagement portions 73A. The first engagement portions and the second engagement portions may or may not be the same in number. For example, the number of first engagement portions 66A may be set to be greater than the number of second engagement portions 73A.

[0055] (2f) Multiple functions possessed by one component in the above embodiments may be realized by multiple components, or one function possessed by one component may be realized by multiple components. Also, multiple functions possessed by multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Also, part of the configuration of the above embodiments may be omitted. Also, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0056] (2g) In addition to the above-described evaporated fuel processing device 1A, the present disclosure can be realized in various forms, such as a system including the evaporated fuel processing device 1A as a component, an evaporated fuel processing method, and the like.

[0057] [Technical idea disclosed in this specification] [Item 1] A fuel vapor treatment device having a plurality of ports, The device includes a main body case and a lid. The main body case includes: a plurality of adsorption chambers, each configured to contain an adsorbent; an opening configured to communicate a target adsorption chamber, which is one of the plurality of adsorption chambers, with the atmosphere; Equipped with The lid portion is a target port that is one of the plurality of ports; The device is configured to be attached to a predetermined attachment surface of the main body case so as to close at least a portion of the opening, the target port is configured to direct gas in a direction transverse to a gas flow direction in the target adsorption chamber; The direction in which the lid portion rotates along the mounting surface is defined as a rotation direction, The cover is rotated along the rotation direction before being attached to the main body case, and one attachment angle is selected from a plurality of attachment angles and the cover is attached to the main body case. The fuel vapor treatment device is configured as described above. [Item 2] The evaporated fuel treatment device according to item 1, a rotation suppressing portion configured to suppress rotation of the lid portion attached to the main body case along the rotation direction; The evaporated fuel treatment device further comprises: [Item 3] The evaporated fuel treatment device according to item 1 or 2, A plurality of first engagement portions disposed on the main body case; A plurality of second engagement portions are disposed on the lid portion and configured to be engageable with the plurality of first engagement portions, respectively; Further equipped with The first and second engagement portions are disposed at positions that are rotationally symmetrical when rotated along the rotation direction. The fuel vapor treatment device is configured as described above. [Explanation of symbols]

[0058] Reference Signs List: 1A-1D...evaporative fuel treatment device, 2...main body case, 2A...first chamber, 2B...second chamber, 2C...third chamber, 21...charge port, 22...purge port, 23...atmospheric port, 40, 43...adsorbent, 60, 60B-60D...auxiliary chamber portion, 61...contact portion, 62...adsorption unit, 63...filter, 64...conversion space, 65...opening, 66A...first engagement portion, 68...holding portion, 68A...step portion, 69...large diameter portion, 69A...mounting surface, 70, 70B-70D...lid portion, 71...main body portion, 72...pipe portion, 73A...second engagement portion, 75...direction change portion, 78...sealing member, 80A...snap-fit ​​structure.

Claims

1. A fuel vapor treatment device having a plurality of ports, The device includes a main body case and a lid. The main body case includes: a plurality of adsorption chambers, each configured to contain an adsorbent; an opening configured to communicate a target adsorption chamber, which is one of the plurality of adsorption chambers, with the outside of the evaporated fuel treatment device; A plurality of first engagement portions disposed on the main body case; Equipped with The lid portion is a target port being one of the plurality of ports; A plurality of second engagement portions are disposed on the lid portion and configured to be engageable with the plurality of first engagement portions by a snap-fit ​​structure; Equipped with The device is configured to be attached to a predetermined attachment surface of the main body case so as to close at least a portion of the opening, the target port is configured to direct the gas in a direction transverse to a flow direction of the gas in the target adsorption chamber; The direction in which the lid portion rotates along the mounting surface is defined as a rotation direction, the cover is rotated along the rotation direction before being attached to the main body case, so that one attachment angle is selected from a plurality of attachment angles and the cover is attached to the main body case; The first and second engaging portions are disposed at positions that are rotationally symmetrical when rotated along the rotation direction. The fuel vapor treatment device is configured as described above.

2. The fuel vapor treatment device according to claim 1, a rotation suppressing portion configured to suppress rotation of the lid portion attached to the main body case along the rotation direction; The evaporated fuel treatment device further comprises:

3. 3. The fuel vapor treatment device according to claim 1, Further comprising a filter; the adsorbent is an adsorption unit which is an assembly of the adsorbent, The suction unit is pressed against the lid portion via the filter. The fuel vapor treatment device is configured as described above.

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