WO2022065208A1 - 圧力調整バルブ - Google Patents

圧力調整バルブ Download PDF

Info

Publication number
WO2022065208A1
WO2022065208A1 PCT/JP2021/034216 JP2021034216W WO2022065208A1 WO 2022065208 A1 WO2022065208 A1 WO 2022065208A1 JP 2021034216 W JP2021034216 W JP 2021034216W WO 2022065208 A1 WO2022065208 A1 WO 2022065208A1
Authority
WO
WIPO (PCT)
Prior art keywords
opening
valve body
valve
pressure
communication pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/034216
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
隆弘 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Piolax Inc
Original Assignee
Piolax Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piolax Inc filed Critical Piolax Inc
Priority to JP2022551940A priority Critical patent/JP7340112B2/ja
Publication of WO2022065208A1 publication Critical patent/WO2022065208A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines

Definitions

  • the present invention relates to a pressure adjusting valve which is arranged in the middle of a pipe connecting a fuel tank and a canister and for adjusting the pressure in the fuel tank.
  • the fuel tank of a vehicle is equipped with a valve for adjusting the pressure in the tank.
  • Patent Document 1 describes that the fuel vapor is discharged to the outside air side when the pressure in the fuel tank rises, and the outside air flows in from the outside air side when the pressure in the fuel tank drops.
  • a slide valve body slidably arranged in the housing having a first connecting pipe portion and a second connecting pipe portion, and urged by a spring in a direction of closing the tank-side opening of the housing.
  • a ventilation path is formed inside the slide valve, and a valve seat is formed in this ventilation path.
  • An umbrella-shaped valve made of rubber is attached to this valve seat, and the pressure in the fuel tank is increased.
  • a fuel tank check valve that opens the umbrella valve to allow outside air to flow into the fuel tank when it drops is described.
  • an object of the present invention is to provide a pressure adjusting valve capable of opening an opening and adjusting the pressure in the tank with a two-step valve opening pressure of a low valve opening pressure and a high valve opening pressure. It is in.
  • the pressure adjusting valve according to the present invention is arranged in the middle of the pipe connecting the fuel tank and the canister arranged outside the fuel tank to adjust the pressure in the fuel tank.
  • a housing having an internal space and a tank communication pipe having one end forming a connection portion of a pipe communicating with the fuel tank and the other end being connected to the housing and communicating with the internal space, and one end thereof.
  • a canister communication pipe having a connecting portion of a pipe communicating with the canister and having the other end connected to the housing to communicate with the internal space, and a tank communication pipe and a canister communication pipe formed in the internal space.
  • the first valve and the second opening to be communicated with each other, the first valve body for opening and closing the first opening, the second valve body for opening and closing the second opening, and the first valve in the direction of closing the first opening.
  • a first urging spring that urges the body and a second urging spring that has a smaller urging force than the first urging spring and urges the second valve body in the direction of closing the second opening.
  • An actuator that performs a first operation of forcibly closing the second opening with the second valve body and a second operation of releasing the state of forcibly closing the second opening with the second valve body. It is characterized by having.
  • the second opening is forcibly closed by the second valve body, and only the first valve body has a predetermined valve opening pressure (first valve opening pressure).
  • first valve opening pressure first valve opening pressure
  • the actuator performs the second operation, the state in which the second opening is forcibly closed by the second valve body is released, and the second valve body opens the first valve. Since the valve opening pressure (second valve opening pressure) lower than the pressure allows the valve to open with respect to the second opening, the pressure in the tank can be adjusted by the two-step valve opening pressure.
  • FIG. 3 is a cross-sectional view of a state in which the tank internal pressure rises from the state shown in FIG. 3 and the first opening is opened. It is sectional drawing of the state in which the actuator performed the 2nd operation in the pressure adjustment valve.
  • FIG. 8 is a cross-sectional view of a state in which the tank internal pressure rises from the state shown in FIG. 8 and the second opening is opened. It is a flow chart explaining the operation of the pressure adjustment valve. Another embodiment of the pressure adjusting valve according to the present invention is shown, and is a cross-sectional view thereof.
  • the pressure adjusting valve 10 of this embodiment communicates the fuel tank 1 with the canister 2 arranged outside the fuel tank 1. It is arranged in the middle of the pipe 3 and is for adjusting the pressure in the fuel tank 1.
  • the adjusting valve 10 is attached to a predetermined position on the outside of the fuel tank 1. Further, the fuel tank 1 is equipped with a full tank control valve V1 for preventing overfueling into the fuel tank, a cut valve V2 for preventing fuel from flowing out of the fuel tank when the vehicle rolls over, and the like.
  • the pipe 3 is composed of a tank side pipe 3a and a canister side pipe 3b, and the tank side pipe 3a is connected to the full tank regulation valve V1 and enters the fuel tank 1 via the full tank regulation valve V1. Communicating.
  • the canister side pipe 3b is connected to the canister 2.
  • a fuel refueling pipe 6 (hereinafter, also simply referred to as “refueling pipe 6”) extends from the side wall of the fuel tank 1 to the fuel refueling port 6a (hereinafter, also simply referred to as “refueling port 6a”). Is attached with a removable refueling cap (not shown). Further, a refueling cover 6b is provided on the outside of the refueling port 6a so as to be openable and closable (see FIG. 4).
  • the adjusting valve 10 is a so-called hybrid car (series system, parallel system,) having a gasoline engine and an electric motor, as in the invention of PCT / JP2019 / 034448 (WO2020 / 050221A1) filed by the present applicant. It may be applied to any kind of hybrid car such as a split method).
  • an internal space R1 and a rear side space R2, R3 are defined inside the adjustment valve 10 via a pair of valve bodies 60, 61, and a first opening is formed. It has a housing 11 with 37 and a second opening 38. Further, the adjusting valve 10 includes a tank communication pipe 25 and a canister communication pipe 30 connected to the housing 11, a first valve body 60 for opening and closing the first opening 37, and a second valve for opening and closing the second opening 38.
  • a second urging spring 67 that urges the first valve body 60 in a direction that closes the body 61 and the first opening 37, and a second valve body 61 that urges the second valve body 61 in a direction that closes the second opening 38. It has a urging spring 68 and an actuator 70 that performs predetermined first and second movements.
  • the first opening 37 and the second opening 38 are formed in the internal space R1 to communicate the tank communication pipe 25 and the canister communication pipe 30. Further, as shown in FIG. 1, the first valve body 60 and the second valve body 61 in this embodiment are diaphragms. These valve bodies 60 and 61 will be described in detail later.
  • the first urging spring 67 and the second urging spring 68 are coil springs formed by winding a wire rod having a predetermined wire diameter. Further, as shown in FIG. 3, the wire diameter of the wire rod forming the second urging spring 68 is smaller than the wire diameter of the wire rod forming the first urging spring 67. As a result, the urging force that urges the second valve body 61 in the direction of closing the second opening 38 of the second urging spring 68 is in the direction of closing the first opening 37 of the first urging spring 67. It is smaller than the urging force that urges the first valve body 60.
  • the first urging spring and the second urging spring may be, for example, a leaf spring or the like instead of the coil spring as described above, and the first valve body and the second valve body may be the first opening and the first valve body. 2 It suffices if it can be urged in the direction of closing the opening.
  • the first valve body 60 and the second valve body 61 are not directly urged by the first urging spring 67 or the second urging spring 68. It is indirectly urged via the spring support member 65.
  • the spring support member 65 includes a bottom wall 65a having a substantially disk shape, and a plurality of annular walls 65b erected concentrically from one surface of the bottom wall 65a. Further, a recess 65c (see FIG. 3) is formed in the radial center of the bottom wall 65a.
  • the first valve body 60 and the second valve body 61 may be directly urged by the first urging spring 67 and the second urging spring 68 without using the above-mentioned spring support member 65.
  • the housing 11 of this embodiment is mounted on a main body 13 having an opening at the lower and upper sides, a cap 15 attached to the lower opening side of the main body 13, and an upper opening side of the main body 13. It is composed of a cover 17 to be formed.
  • the first valve body 60 which is a diaphragm, is sandwiched between the main body 13 and the cap 15, and the second valve body 61, which is a diaphragm, is sandwiched between the main body 13 and the cover 17.
  • the space R1 and the first back surface side space R2 and the second back surface side space R3 are defined (see FIG. 3).
  • the main body 13 has a peripheral wall 20 having a substantially cylindrical shape with an opening at the bottom and above.
  • the lower opening of the peripheral wall 20 forms the first opening 21, and the upper opening forms the second opening 22.
  • a first diameter-expanded portion 23 and a second diameter-expanded portion 24 having a diameter larger than the outer diameter of the peripheral wall 20 are provided.
  • annular recesses 23a and 24a are formed inside both the enlarged diameter portions 23 and 24 (see FIG. 3).
  • the first valve body 60 is arranged on the first opening 21 side of the peripheral wall 20, and the second valve body 61 is arranged on the second opening 22 side, so that both openings are open. 21 and 22 are closed so that the internal space R1 is defined in the main body 13.
  • One end 26 of the tank communication pipe 25 forms a connection portion of the tank side pipe 3a communicating with the fuel tank 1, and the other end 27 is connected to the peripheral wall 20 of the main body 13 and communicates with the internal space R1. (See Fig. 3).
  • a round hole-shaped tank communication hole 27a that communicates with the internal space R1 is formed at a predetermined position in the circumferential direction of the peripheral wall 20.
  • the tank communication pipe 25 has a cylindrical shape extending with a predetermined length. Then, the other end 27 of the tank communication pipe 25 is connected to a position on the outer periphery of the peripheral wall 20 that matches the tank communication hole 27a, so that the tank communication pipe 25 is connected to the internal space R1 via the tank communication hole 27a. It is designed to communicate.
  • the tank communication pipe 25 of this embodiment is integrally formed with the peripheral wall 20 of the main body 13.
  • the tank communication pipe may be formed separately from the main body, and the tank communication pipe may be connected to the main body with an adhesive or the like. Further, the tank communication pipe may be extended so as to be located on the internal space side of the main body (these will be described in other embodiments).
  • one end 31 of the canister communication pipe 30 forms a connection portion of the canister side pipe 3b communicating with the canister 2, and the other end 32 is connected to the peripheral wall 20 of the main body 13 and communicates with the internal space R1. (See Fig. 3).
  • a canister communication hole 34 (see FIG. 1) having a substantially square hole shape is formed at a position facing the tank communication hole 27a in the circumferential direction of the peripheral wall 20 to communicate with the internal space R1.
  • a frame-shaped portion 35 having a substantially square frame shape is projected from the peripheral edge of the peripheral wall 20 on the outside of the canister communication hole 34 (the side opposite to the internal space R1).
  • the canister communication pipe 30 has a base portion 32a arranged on the other end 32 side and a small diameter tubular portion 31a extending from the base portion 32a. Then, as shown in FIG. 3, the other end 32 of the canister communication pipe 30 is fitted to the frame-shaped portion 35 via an adhesive or the like, so that the other end 32 of the canister communication pipe 30 becomes the main body 13. It is connected to the peripheral wall 20.
  • the canister communication pipe 30 has an extension portion 36 extending from the other end 32 so as to be located in the internal space R1 of the main body 13.
  • the extending portion 36 has a substantially square cylinder shape extending from the peripheral edge of the peripheral wall 20 inside the canister communication hole 34 (on the side of the internal space R1) toward the axial center C of the housing 11. It is composed of a formed base portion 36a and a tip portion 36b which is connected to the tip of the base portion 36a in the extending direction and is arranged at a position corresponding to the axis C of the housing 11.
  • the tip portion 36b extends along the axis C of the housing 11 and has a substantially cylindrical shape with openings below and above, and the opening direction thereof and the extending direction of the base portion 36a are orthogonal to each other. As shown in FIG. 3, the internal space of the tip portion 36b communicates with the opening portion 36c on the tip end side in the extending direction of the base portion 36a.
  • the lower opening (the opening facing the cap 15 side) of the tip portion 36b forms the first opening 37.
  • the opening on the upper side (opening facing the cover 17 side) of the tip portion 36b forms the second opening 38. That is, in this embodiment, the first opening 37 and the second opening 38 are formed on the tip portion 36b of the extending portion 36 so as to face each other in the vertical direction.
  • the peripheral edge of the first opening 37 in the tip portion 36b is referred to as the first valve seat 37a
  • the peripheral edge portion on the side of the second opening 38 is referred to as the second valve seat 38a.
  • an umbrella valve mounting hole 39 is formed in the ceiling wall 36d (the wall portion on the second opening 38 side) of the base portion 36a.
  • the shaft portion 40a of the umbrella valve 40 is inserted into the umbrella valve mounting hole 39, and the umbrella valve 40 is mounted.
  • the umbrella valve 40 is made of rubber or the like, and is composed of a shaft portion 40a and a head portion 40b that extends like an umbrella from the upper end of the shaft portion to the lower end of the shaft portion.
  • a plurality of through holes 39a communicating with the internal space of the base 36a are formed around the umbrella valve mounting hole 39 of the ceiling wall 36d.
  • the peripheral edge of the head portion 40b of the umbrella valve 40 is in contact with the front peripheral edge of the through hole 39a so as to be detachable.
  • the head 40b is always in contact with the front peripheral edge of the through hole 39a (see FIG. 3), and the plurality of through holes 39a are in a closed state.
  • the canister communication pipe 30 of this embodiment is formed separately from the main body 13, it may be integrally formed with the peripheral wall 20 as in the tank communication pipe 25 described above. Further, although the canister communication pipe 30 has an extension portion 36 located in the internal space R1 of the main body 13, it may be configured not to have such an extension portion (this is another embodiment). Explained in).
  • the cap 15 attached to the lower opening side portion of the main body 13 has a substantially circular plate-shaped bottom wall 42 and a substantially cylindrical peripheral wall 43 standing upright from the peripheral edge of the bottom wall 42 and having an upper opening. It has a substantially bottomed cylindrical shape.
  • the upper end side of the peripheral wall 43 is inserted inside the first enlarged diameter portion 23 of the main body 13.
  • a spring support protrusion 42a having an annular shape is projected from the inner surface side of the bottom wall 42 at the central portion in the radial direction to hold the outer periphery of the lower end portion of the first urging spring 67.
  • a plurality of through holes 44 are formed on the outside of the spring support protrusion 42a of the bottom wall 42 (see FIG. 1).
  • the through hole 44 communicates with the first back surface side space R2. Therefore, the gas in the first back surface side space R2 is discharged to the outside of the adjusting valve 10 or the gas outside the adjusting valve is flowed into the first back surface side space R2 through the through hole 44.
  • the cover 17 mounted on the upper opening side of the main body 13 is formed from a substantially annular base portion 45, a raised portion 46 raised from the inner peripheral edge portion of the base portion 45, and a ceiling surface 46a of the raised portion 46. It has an upright mounting portion 47 for mounting an actuator.
  • the mounting portion 47 has a substantially square frame shape with an opening at the upper side, and square hole-shaped openings 47a are formed on both sides of the base end portion thereof. Therefore, the internal space of the mounting portion 47 communicates with the outside of the housing 11 via the opening 47a.
  • the outer peripheral edge portion 64 (described later) of the second valve body 61 is sandwiched from the inner peripheral surface side (the surface facing the second valve body 61 side) of the outer peripheral edge portion of the base portion 45. It has a holding portion 45a.
  • the sandwiching portion 45a is inserted inside the second diameter-expanding portion 24 of the main body 13.
  • a round hole-shaped through hole 46b is formed in the radial center of the ceiling surface 46a of the raised portion 46.
  • the through hole 46b communicates the second back surface side space R3 with the internal space of the mounting portion 47. Therefore, the gas in the second back surface side space R3 is discharged to the outside of the adjustment valve 10 or the gas outside the adjustment valve flows into the second back surface side space R3 through the through hole 46b and the opening 47a of the mounting portion 47. It is done.
  • the housing 11 described above has a three-part configuration of a main body 13, a cap 15, and a cover 17, but for example, a bottomed cylindrical main body and a cover mounted above the main body. It may be composed of two parts. Further, the shape and structure of the housing, the tank communication pipe, the canister communication pipe, and the portion thereof are not limited to the above aspects, and may be any shape and structure having at least a first opening and a second opening.
  • the first valve body 60 and the second valve body 61 in this embodiment are diaphragms in which all parts are integrally formed from an elastic material such as rubber or an elastic elastomer.
  • the first valve body 60 and the second valve body 61 have the same shape, and only the orientations when they are arranged with respect to the housing 11 are different.
  • valve bodies 60 and 61 have a disc-shaped base 62 that is brought into contact with and separated from the openings 37 and 38 to open and close the openings 37 and 38, and an annular shape from the peripheral edge of the base 62. It has an elastically deformable portion 63 which is thinner than the base portion 62 and can be flexed and deformed by the pressure fluctuation of the internal space R1. Further, a protrusion 62a is projected from one surface of the base 62.
  • the elastic deformation portion 63 has an upward or downward convex shape, that is, a shape protruding so as to form a gentle curved surface toward the direction away from the openings 37 and 38.
  • the outer diameter of the outer peripheral edge portion 64 is adapted to match the inner diameters of the first diameter-expanded portion 23 and the second diameter-expanded portion 24 provided in the main body 13.
  • the outer peripheral edge portion 64 of the elastically deformed portion 63 has an annular convex portion 64a projecting from the inner surface side thereof (the surface facing the internal space R1 side). ..
  • the first valve body 60 is mounted on the first opening 21 side of the main body 13 via a cap 15.
  • the lower end of the first urging spring 67 is supported by the inner surface of the bottom wall 42 of the cap 15, and is held by the spring support protrusion 42a.
  • the spring support member 65 with the opening of the recess 65c facing upward is supported by the upper end portion of the first urging spring 67, and the upper end portion of the first urging spring 67 is supported by the spring support member 65. , Held by an inner annular wall 65b.
  • the first valve body 60 which is a diaphragm, is inserted and positioned in the recess 65c of the spring support member 65 with its protrusion 62a facing downward, and the first valve is placed at the upper end of the peripheral wall 43 of the cap 15.
  • the outer peripheral edge portion 64 of the body 60 is placed with the convex portion 64a facing upward.
  • the cap 15 is pushed from the first valve body 60 side toward the first opening 21 of the main body 13, and the inner circumference of the first enlarged diameter portion 23 of the main body 13 and the peripheral wall 43 of the cap 15 It is fixed to the outer periphery of the upper end portion by an adhesive or other welding means. Then, the convex portion 64a of the first valve body 60 is fitted into the concave portion 23a on the first opening 21 side of the main body 13, the upper end portion of the peripheral wall 43 of the cap 15, and the first opening 21 side of the main body 13. The outer peripheral edge portion 64 of the first valve body 60 is sandwiched between the peripheral edge portion of the first valve body 60, and the first urging spring 67 is arranged in a compressed state between the first valve body 60 and the cap 15. , The cap 15 can be attached to the first opening 21 side of the main body 13.
  • the first back surface side space R2 is defined between the cap 15 and the first valve body 60.
  • the base 62 of the first valve body 60 is urged toward the first opening 37 by the first urging spring 67 held in the compressed state via the spring support member 65, and the base 62 is urged.
  • the first opening 37 is in a closed state (see FIG. 3).
  • the first valve body 60 is configured to separate from the first valve seat 37a and open the first opening 37 when a pressure equal to or higher than a predetermined value is applied (see FIG. 6).
  • the valve opening pressure when the 1-valve body 60 opens from the 1st opening 37 is referred to as a “first valve opening pressure”.
  • the second valve body 61 is mounted on the second opening 22 side of the main body 13 via the cover 17.
  • the second valve body 61 which is a diaphragm, has the protrusion 62a facing upward, and the convex portion 64a of the outer peripheral edge portion 64 is fitted into the concave portion 24a on the second opening 22 side of the main body 13.
  • the spring support member 65 is placed in a state of being positioned on the upper surface side of the second valve body 61 so as to insert the protrusion 62a of the second valve body 61 into the recess 65c of the spring support member 65.
  • the lower end of the second urging spring 68 is supported by the bottom wall 65a of the spring support member 65, and is held by the inner annular wall 65b of the spring support member 65.
  • the cover 17 is covered with the holding portion 45a facing downward toward the second opening 22 side of the main body 13, and the inner circumference of the second enlarged diameter portion 24 of the main body 13 and the holding portion 45a of the cover 17 are covered. It is fixed between the outer circumference and the outer circumference by an adhesive or other welding means. Then, the convex portion 64a of the second valve body 61 is fitted into the concave portion 23a on the second opening 22 side of the main body 13, and the holding portion 45a of the cover 17 and the peripheral edge of the main body 13 on the second opening 22 side.
  • the outer peripheral edge portion 64 of the second valve body 61 is sandwiched between the portions, and the second urging spring 68 is arranged between the second valve body 61 and the cover 17 in a compressed state to form a main body.
  • the cover 17 is attached to the second opening 22 side of the 13.
  • the second back surface side space R3 is formed between the cover 17 and the second valve body 61.
  • the base 62 of the second valve body 61 is urged toward the second opening 38 by the second urging spring 68 held in the compressed state via the spring support member 65, and the base 62 is urged.
  • the second opening 38 is in a closed state by abutting on the second valve seat 38a (see FIG. 7).
  • the second valve body 61 is configured to separate from the second valve seat 38a and open the second opening 38 when a pressure equal to or higher than a predetermined value is applied (see FIG. 8).
  • the valve opening pressure when the two-valve body 61 opens from the second opening 38 is referred to as a “second valve opening pressure”.
  • the first opening 21 side of the main body 13 is closed by the first valve body 60
  • the second opening 22 side of the main body 13 is closed by the second valve body 61.
  • the internal space R1 is defined between the first valve body 60 and the second valve body 61.
  • the first valve body 60 and the second valve body 61 in this embodiment are diaphragms formed of an elastic material, but the first valve body and the second valve body are made of a synthetic resin material or a metal material.
  • the valve body may be formed from, and the shape and structure thereof can be appropriately changed according to the shape and structure of the housing, and is not particularly limited.
  • the actuator 70 in this embodiment is a so-called electric actuator, and has a substantially cylindrical main body 71 and an operating member 73 that slides forward and backward with respect to the main body 71. That is, the actuating member 73 protrudes in a direction close to the second valve body 61 (see FIG. 3) or retracts in a direction away from the second valve body 61 (see FIG. 7). It has become like. Further, a disk-shaped contact portion 73a is provided at the tip of the operating member 73 in the protruding direction.
  • the actuator 70 is inserted into the mounting portion 47 provided on the cover 17 so that it can be mounted.
  • the actuating member 73 passes through the through hole 46b of the cover 17 and is the contact surface of the back surface side of the second valve body 61 (the contact surface of the second valve body 61 with respect to the front peripheral portion of the second opening 38). It is located in the center of the opposite side) (see FIG. 3).
  • the actuating member 73 is brought into contact with and separated from the back surface side of the second valve body 61 as the actuating member 73 advances and retreats.
  • the actuating member 73 is indirectly brought into contact with and separated from the back surface side of the second valve body 61 via the spring support member 65).
  • the actuator 70 in this embodiment is a solenoid (solenoid valve) actuator that utilizes the electric power obtained by the electromagnet.
  • a linear actuator using a linear motor an actuator using Joule heat generated by inputting a current using a shape memory alloy, a rubber actuator using a rubber tube, and further, a rubber actuator using a rubber tube may be used.
  • An advancing / retreating structure using a ball screw or the like, or a pressure cylinder using pneumatic pressure or hydraulic pressure may be applied, and the operating member may have a structure capable of advancing / retreating.
  • the actuator 70 performs the first operation of forcibly closing the second valve body 61 with respect to the second opening 38, and the state of forcibly closing the second valve body 61 with respect to the second opening 38. It is configured to perform the second operation of releasing.
  • the first valve body 60 When a pressure higher than the first valve opening pressure acts on the first valve body 60 in the state shown in FIG. 3, as shown in FIG. 6, it resists the urging force of the first urging spring 67.
  • the first valve body 60 is adapted to open from the first opening 37.
  • the second urging spring 68 resists the urging force.
  • the second valve body 61 is adapted to open from the second opening 38.
  • the actuator 70 is configured to perform the second operation when the fuel tank 1 is refueled. Further, the actuator 70 is configured to perform the above-mentioned first operation except when the fuel tank 1 is refueled.
  • this control structure has a forward signal (protruding signal) to the operating member 73 of the actuator 70 based on the detection unit 7 that detects the opening / closing of the refueling cover 6b and the signal from the detection unit 7.
  • this control structure has a control unit 8 for transmitting a backward signal (evacuation signal).
  • the timing of transmitting the forward signal or the backward signal to the actuator 70 operating member 73 by the control unit 8 may be the same as when the refueling cover 6b is opened, but there is a certain time lag.
  • a forward signal or a backward signal may be transmitted at a timing delayed by a predetermined time from the time when the above state is reached).
  • the detection unit 7 determines whether or not the refueling cover 6b is open / closed (step S1).
  • a forward signal is transmitted to the operating member 73 of the actuator 70, the first operation of the actuator 70 is performed (step S2), and the second valve body 61 is moved to the second valve seat 38a.
  • the second opening 38 is forcibly closed by abutting (see FIG. 3).
  • step S3 when a pressure higher than the first valve opening pressure acts on the first valve body 60 (step S3), the first valve body 60 resists the urging force of the first urging spring 67. Then, it separates from the first valve seat 37a and the first opening 37 opens (see step S4 and FIG. 6).
  • step S5 when a pressure higher than the first valve opening pressure does not act on the first valve body 60, the first valve body 60 is subjected to the urging force of the first urging spring 67.
  • the first opening 37 is kept in a closed state by abutting on the valve seat 37a (step S5).
  • step S6 when the detection unit 7 determines whether or not the lubrication cover 6b is open / closed in step S1 in FIG. 9, when the opening of the lubrication cover 6b is detected, a backward signal is transmitted to the operating member 73 of the actuator 70, and the actuator The second operation of 70 is performed (step S6), and the state in which the second opening 38 is forcibly closed by the second valve body 61 is released (see FIG. 7).
  • step S7 when a pressure higher than the second valve opening pressure acts on the second valve body 61 (step S7), the second valve body 61 resists the urging force of the second urging spring 68. Then, it separates from the second valve seat 38a and the second opening 38 opens (see step S8 and FIG. 8).
  • the protruding / retracting operation of the actuating member 73 of the actuator 70 described above is merely an example, and is not limited to the above mode.
  • the second valve opening pressure is set to be higher than the pressure in the fuel tank 1 at the time of refueling the fuel tank 1 by a predetermined value or more.
  • the adjusting valve 10 is not refueled (see step S1 in FIG. 9), and in a normal state where the pressure in the fuel tank does not rise, the first urging spring 67 causes the adjusting valve 10.
  • the first valve body 60 is urged to close the first opening 37
  • the second valve body 61 is urged to close the second opening 38 by the second urging spring 68
  • the actuator 70 is the first. No operation is performed (see step S2 in FIG. 9), and the second valve body 61 is forcibly closed with respect to the second opening 38.
  • the fuel vapor passes through the cut valve V2, the full tank regulation valve V1, the tank side pipe 3a, and the tank communication pipe 25. Then, it flows into the internal space R1 of the housing 11, and the pressure in the internal space R1 rises.
  • the diaphragm is used as shown in FIG. A pressing force acts on the elastically deformed portion 63 of the first valve body 60 from the internal space R1 side toward the first back surface side space R2 side to bend and deform, thereby pushing from the first back surface side space R2.
  • the first valve body 60 is pushed down against the pressure and the urging force of the first urging spring 67, the base 51 thereof separates from the first valve seat 37a, and the first opening 37 opens (FIG. 9). See step S4).
  • the tank communication pipe 25 and the canister communication pipe 30 communicate with each other through the first opening 37, so that the fuel steam in the internal space R1 is the extension portion 36, the canister communication pipe 30, and the canister side pipe 3b. Can be discharged to the canister 2 (see FIG. 6) to reduce the pressure in the fuel tank 1.
  • the head portion 40b of the umbrella valve 40 is pressed from the back surface side and deformed so as to roll up, and the peripheral portions thereof are a plurality of extending portions 36.
  • a plurality of through holes 39a are opened apart from the front peripheral edge of the through holes 39a. Therefore, the air outside the fuel tank 1 flows into the internal space R1 of the housing 11 through the canister side pipe 3b, the canister communication pipe 30, the extension portion 36, and the plurality of through holes 39a, and the air further flows into the tank side pipe. 3a, the pressure in the fuel tank 1 can be increased by being introduced into the fuel tank 1 through the tank communication pipe 25.
  • the actuator 70 performs the second operation (see step S6 in FIG. 9), and the second valve body 61 The state in which the second opening 38 is forcibly closed is released by (see FIG. 7).
  • the elastically deformed portion 63 of the second valve body 61 which is a diaphragm, is pressed from the internal space R1 side toward the second back surface side space R3 side to bend and deform, thereby bending and deforming.
  • the second valve body 61 is pushed up against the pressing force from the first back surface side space R2 and the urging force of the first urging spring 67, and the base 51 thereof separates from the second valve seat 38a.
  • the second opening 38 opens (see step S8 in FIG. 9).
  • the pressure in the fuel tank 1 can be reduced to the pressure below the second valve opening pressure, and the fuel tank can be reduced to the pressure before refueling the fuel tank 1.
  • the pressure in 1 can be lowered to a predetermined value or less. After that, a refueling gun is inserted into the refueling port 6a of the fuel tank 1, and fuel is refueled into the fuel tank 1 through the refueling pipe 6.
  • the second opening 38 is forcibly closed by the second valve body 61, and only the first valve body 60 is first opened.
  • the valve pressure makes it possible to open from the first opening 37 (see FIG. 6), while when the actuator 70 performs the second operation, the state in which the second opening 38 is forcibly closed by the second valve body 61 is released. Since the second valve body 61 can be opened with respect to the second opening 38 at a second valve opening pressure lower than the first valve opening pressure (see FIG. 8), the valve opening pressure has two stages. , The pressure in the fuel tank 1 can be adjusted.
  • the actuator 70 is configured to perform the second operation when the fuel tank 1 is refueled. Therefore, as described above, the second valve body 61 can be opened from the second opening 38 at a second valve opening pressure lower than the first valve opening pressure, and enters the internal space R1 of the housing 11 through the tank communication pipe 25. The inflowing fuel vapor can be discharged to the outside of the fuel tank 1 via the canister communication pipe 30. As a result, the pressure in the fuel tank 1 can be lowered to a predetermined value or less before refueling the fuel tank 1, so that when the refueling cap is opened from the refueling port 6a, the fuel is ejected or ejected from the refueling port 6a. It is possible to prevent the generation of sound.
  • the actuator 70 is first operated and the second opening 38 is forcibly closed by the second valve body 61, so that the first valve body 60 is set to be higher than the second valve opening pressure.
  • the valve opening pressure makes it possible to open from the first opening 37, and leakage of fuel vapor to the outside of the fuel tank 1 can be suppressed.
  • the canister communication pipe 30 has an extension portion 36 extending from the other end 32 so as to be located in the internal space R1, and the first opening 37 is provided in the extension portion 36. And a second opening 38 is formed (see FIG. 3).
  • the first opening 37 and the second opening 38 can be formed by using the extending portion 36 located in the internal space R1 of the housing 11, so that the structure of the adjusting valve 10 can be simplified. Not only can it be planned, but it can also be made compact.
  • the first opening 37 and the second opening 38 are formed so as to face each other at the tip portion 36b of the extending portion 36 in the extending direction.
  • the first valve body 60 and the second valve body 61 are diaphragms that can be opened and closed with respect to the first opening 37 and the second opening 38.
  • the first valve body 60 and the second valve body 61 are moved from the axial direction.
  • the size of the adjusting valve 10 when viewed can be made compact.
  • the pressure adjusting valve 10A of this embodiment (hereinafter, also simply referred to as “adjusting valve 10”) is different from the above-described embodiment mainly in the structure of the housing 11A and the formation positions of the first opening 37 and the second opening 38. There is.
  • the housing 11A has a two-part structure consisting of a bottomed cylindrical main body 13A and a cover 17A mounted on the opening 21 above the main body 13A.
  • the main body 13A has a bottom wall 28 and a peripheral wall 20 erected from the peripheral edge thereof.
  • the tank communication pipe 25A is formed separately from the main body 13A, and the canister communication pipe 30A is integrally formed with the main body 13A.
  • the other end 27 of the tank communication pipe 25A is connected to the peripheral wall 20, and the extension portion 36A extends so as to be located in the internal space R1.
  • a first opening 37 and a second opening 38 are formed in parallel on the ceiling wall 36d of the extending portion 36A at predetermined intervals.
  • the first opening 37 is formed on the tip end side of the ceiling wall 36d
  • the second opening 38 is formed between the first opening 37 and the base end portion of the extending portion 36A of the ceiling wall 36d.
  • An umbrella valve mounting hole 39 is formed in the wall portion 41 erected on the distal end side of the extending portion 36A in the extending direction, and the umbrella valve 40 is mounted.
  • first valve body 60A and the second valve body 61A have a disk shape, and a protrusion 62a is projected from the radial center portion on the surface side. Further, the first valve body 60A and the second valve body 61A close the first opening 37 and the second opening 38 by the first urging spring 67 and the second urging spring 68, respectively, via the spring support member 65. Being urged in the direction.
  • the actuator 70 mounted via the mounting portion 47 of the cover 17A has a first operation of forcibly closing the second valve body 61A with respect to the second opening 38, and a second opening of the second valve body 61A. It is configured to perform a second operation of forcibly releasing the closed state with respect to 38.
  • the adjustment valve 10A of the above embodiment can also obtain the same effect as that of the above embodiment. Further, the adjusting valve 10A of this embodiment can reduce the number of parts of the housing 11A and make the housing 11A compact in the height direction.
  • the present invention is not limited to the above-described embodiments, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. ..
  • Fuel tank 2 Canister 3 Piping 10,10A Pressure adjustment valve (adjustment valve) 11, 11A Housing 13, 13A Main body 15 Cap 17, 17A Cover 25, 25A Tank communication pipe 30, 30A Canister communication pipe 37 1st opening 38 2nd opening 40 Umbrella valve 60, 60A 1st valve body 61, 61A 2nd valve Body 65 Spring support member 67 1st urging spring 68 2nd urging spring 70 Actuator

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
PCT/JP2021/034216 2020-09-25 2021-09-17 圧力調整バルブ Ceased WO2022065208A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022551940A JP7340112B2 (ja) 2020-09-25 2021-09-17 圧力調整バルブ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020161354 2020-09-25
JP2020-161354 2020-09-25

Publications (1)

Publication Number Publication Date
WO2022065208A1 true WO2022065208A1 (ja) 2022-03-31

Family

ID=80845328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/034216 Ceased WO2022065208A1 (ja) 2020-09-25 2021-09-17 圧力調整バルブ

Country Status (2)

Country Link
JP (1) JP7340112B2 (https=)
WO (1) WO2022065208A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4332365A1 (en) * 2022-09-01 2024-03-06 Delphi Technologies IP Limited Fuel tank isolation valve and related method of use

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259661A (ja) * 1994-03-16 1995-10-09 Honda Motor Co Ltd 蒸発燃料処理装置
JP2001099015A (ja) * 1999-09-30 2001-04-10 Denso Corp 蒸発燃料処理装置
JP2002004958A (ja) * 2000-06-22 2002-01-09 Toyota Motor Corp 燃料蒸気パージシステムの異常診断方法及び異常診断装置
JP2016098661A (ja) * 2014-11-18 2016-05-30 トヨタ自動車株式会社 燃料タンクシステム
US20180030933A1 (en) * 2016-07-26 2018-02-01 Hyundai Motor Company Canister valve device for vehicle
US20180119650A1 (en) * 2016-10-31 2018-05-03 Stant Usa Corp. Fuel tank pressure regulator
JP2018158608A (ja) * 2017-03-22 2018-10-11 株式会社デンソー 燃料タンクシステム
WO2020050221A1 (ja) * 2018-09-05 2020-03-12 株式会社パイオラックス 圧力調整バルブ

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259661A (ja) * 1994-03-16 1995-10-09 Honda Motor Co Ltd 蒸発燃料処理装置
JP2001099015A (ja) * 1999-09-30 2001-04-10 Denso Corp 蒸発燃料処理装置
JP2002004958A (ja) * 2000-06-22 2002-01-09 Toyota Motor Corp 燃料蒸気パージシステムの異常診断方法及び異常診断装置
JP2016098661A (ja) * 2014-11-18 2016-05-30 トヨタ自動車株式会社 燃料タンクシステム
US20180030933A1 (en) * 2016-07-26 2018-02-01 Hyundai Motor Company Canister valve device for vehicle
US20180119650A1 (en) * 2016-10-31 2018-05-03 Stant Usa Corp. Fuel tank pressure regulator
JP2018158608A (ja) * 2017-03-22 2018-10-11 株式会社デンソー 燃料タンクシステム
WO2020050221A1 (ja) * 2018-09-05 2020-03-12 株式会社パイオラックス 圧力調整バルブ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4332365A1 (en) * 2022-09-01 2024-03-06 Delphi Technologies IP Limited Fuel tank isolation valve and related method of use

Also Published As

Publication number Publication date
JP7340112B2 (ja) 2023-09-06
JPWO2022065208A1 (https=) 2022-03-31

Similar Documents

Publication Publication Date Title
US8584818B2 (en) Shock absorber
CA2674933C (en) Pressure reducing valve for gas
US9410635B2 (en) Fuel vapor control device
US20150217621A1 (en) Cylinder apparatus
JP6414887B2 (ja) 調整可能な減衰力を伴う、特に車両のショックアブソーバのためのダンパーバルブ
JP2002180907A (ja) 車両用燃料ガス供給装置
WO2022065208A1 (ja) 圧力調整バルブ
JP7624762B2 (ja) パワーエレメント及びこれを用いた膨張弁
US20250361918A1 (en) Method of manufacturing shock absorber
JP2023018339A (ja) シール構造、減衰力発生装置
JP2007071290A (ja) 油圧緩衝器の減衰力発生バルブ構造
JP2002285929A (ja) 過給油防止バルブ
US20230193796A1 (en) Muffler valve and muffler
EP3940279B1 (en) Expansion valve
EP4067713A1 (en) Power element and expansion valve using same
US5722468A (en) Evaporative-fuel emission preventing apparatus
JP7018143B2 (ja) 圧力調整バルブ
KR20030068382A (ko) 2방향 밸브
US12203527B2 (en) Damping force adjustable shock absorber
CN113833861A (zh) 阀装置
JP2002364766A (ja) ダイヤフラム弁
JP7373857B2 (ja) パワーエレメント及びそれを用いた膨張弁
US20260092634A1 (en) Shock absorber and method for attaching a damping force adjustment apparatus
JP2019019704A (ja) 燃料ポンプ
JP7613076B2 (ja) 減圧弁

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21872337

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022551940

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21872337

Country of ref document: EP

Kind code of ref document: A1