WO2021221072A1 - Dispositif d'alimentation en carburant - Google Patents

Dispositif d'alimentation en carburant Download PDF

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Publication number
WO2021221072A1
WO2021221072A1 PCT/JP2021/016846 JP2021016846W WO2021221072A1 WO 2021221072 A1 WO2021221072 A1 WO 2021221072A1 JP 2021016846 W JP2021016846 W JP 2021016846W WO 2021221072 A1 WO2021221072 A1 WO 2021221072A1
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WO
WIPO (PCT)
Prior art keywords
fuel
flow path
filter
discharge port
supply device
Prior art date
Application number
PCT/JP2021/016846
Other languages
English (en)
Japanese (ja)
Inventor
太一 中村
浩 佐藤
Original Assignee
株式会社ミツバ
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 株式会社ミツバ filed Critical 株式会社ミツバ
Priority to CN202180029791.9A priority Critical patent/CN115461534A/zh
Publication of WO2021221072A1 publication Critical patent/WO2021221072A1/fr

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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
    • 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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a fuel supply device.
  • a fuel supply device for supplying fuel from a fuel tank to an internal combustion engine has been used in a vehicle.
  • a fuel supply device includes, for example, a fuel pump that pumps fuel in a fuel tank and pumps it to an internal combustion engine, a holder portion (holder) that houses the fuel pump, and a fuel that is formed inside the holder portion.
  • the discharge port (communication hole) where the fuel pumped by the pump is discharged, the fuel take-out pipe (supply pipe) that guides the fuel discharged from the discharge port to the internal combustion engine, and the fuel pressure inside the fuel flow path are constant.
  • a structure including a pressure regulator (pressure regulating valve) that suppresses the value is disclosed (see, for example, Patent Document 1).
  • the pressure regulator is provided in the return flow path branched from the fuel flow path between the discharge port and the fuel take-out pipe.
  • the fuel supply device is a filter (secondary filter) formed in a mesh shape with fine holes on the upstream side of the return flow path in the middle of the fuel flow path between the discharge port and the fuel take-out pipe. It has. The filter filters the fuel discharged from the discharge port and removes foreign matter from the fuel.
  • the filter not only filters the fuel flowing through the fuel flow path between the discharge port and the fuel outlet pipe, but also the fuel flowing through the return flow path.
  • a part of the wax (for example, copper powder) obtained by welding the brush and the pigtail may be peeled off and mixed as a foreign substance in the fuel.
  • abrasion powder generated by sliding between the brush and the commitator may be mixed as foreign matter in the fuel.
  • Foreign matter generated in such a fuel pump may clog the pressure regulator, and the function of the pressure regulator may not be maintained.
  • the present invention provides a fuel supply device capable of suppressing clogging of the pressure regulator with foreign matter in the fuel and maintaining the function of the pressure regulator.
  • the fuel supply device has a discharge port for pumping fuel and discharging the pumped fuel, and pumps the fuel to the internal combustion engine via the discharge port.
  • a pressure regulator that communicates with the discharge port via the fuel flow path and suppresses the fuel pressure of the fuel discharged from the discharge port to a constant value, and the discharge port and the pressure of the fuel flow path. It is characterized by including a filter which is arranged between the regulator and filters the fuel.
  • the fuel flow path branches from the fuel take-out flow path for communicating the discharge port and the internal combustion engine to the side opposite to the internal combustion engine, and the discharge port and the pressure
  • the filter may be arranged in the return flow path, having a return flow path for communicating with the regulator.
  • a holder portion for accommodating the fuel pump may be provided, and the holder portion may have the fuel flow path.
  • the filter includes a conical frame body and a mesh-shaped filter body attached to the frame body, and the frame body is a portion of the fuel flow path where the filter is arranged. It has an annular portion that is formed in an annular shape when viewed from the axial direction, and a side surface portion that extends from the annular portion along the axial direction and is formed tapered as it is separated from the annular portion.
  • the filter body may be attached to the side surface portion.
  • the holder portion and the frame body may be formed of a resin material.
  • the ring-shaped portion may have a metal frame on the inner peripheral portion.
  • the filter may be provided directly below the discharge port in the fuel flow direction.
  • the present invention it is possible to provide a fuel supply device capable of suppressing clogging of a pressure regulator with foreign matter in fuel and maintaining the function of the pressure regulator.
  • FIG. 1 is a cross-sectional view of the fuel supply device 1.
  • the fuel supply device 1 is arranged so as to be immersed in fuel in a fuel tank 2 of a vehicle such as an automobile or a motorcycle, and pumps up the fuel in the fuel tank 2 to create an internal combustion engine (not shown). ) Is pumped.
  • the upper side in the vertical direction is simply referred to as the upper side
  • the lower side in the vertical direction is simply referred to as the lower side.
  • the fuel supply device 1 includes a fuel pump 3, a holder portion 4 fixed to the upper wall 2a of the fuel tank 2 and accommodating the fuel pump 3 inside, and a pressure regulator 6 accommodated inside the holder portion 4. It includes a filter 30 and a filter unit 5 provided on the suction side (lower side of the fuel pump 3) of the fuel pump 3.
  • the fuel pump 3 is an upper pump that is attached to the upper wall 2a of the fuel tank 2 via the holder portion 4 and pumps fuel from the inside 2b of the fuel tank 2 and pumps it to the internal combustion engine.
  • the fuel pump 3 is formed in a cylindrical shape.
  • the fuel pump 3 has a pump unit 3a arranged on the filter unit 5 side and a motor unit 3b attached to the upper side of the pump unit 3a.
  • the pump unit 3a for example, a non-volumetric pump having an impeller 16 is used.
  • the pump portion 3a is composed of an impeller 16 and a pump case 17 formed so as to cover the entire impeller 16.
  • the impeller 16 is a disk-shaped member made of resin.
  • the impeller 16 is formed with a fuel flow path hole (not shown) penetrating in the wall thickness direction.
  • the impeller 16 is rotated by driving the motor unit 3b. Then, the fuel is pumped from the lower side to the upper side of the impeller 16 through the fuel flow path hole.
  • a suction portion 21 is provided in the lower portion 17a of the pump case 17 (that is, the bottom portion of the fuel pump 3) that covers the entire impeller 16.
  • the suction portion 21 is formed in a tubular shape. Fuel is pumped from the suction unit 21 into the pump unit 3a.
  • the motor unit 3b uses a DC motor with a brush (not shown). One end of a pigtail (not shown) is connected to the brush to supply electric power. The brush and pigtail are brazed using, for example, copper powder.
  • the output shaft 10 is arranged at the center of the motor unit 3b in the radial direction D2. The output shaft 10 is rotatably supported by the upper side of the motor portion 3b and the lower side of the pump portion 3a. The output shaft 10 is connected to the impeller 16 of the pump unit 3a. However, the impeller 16 is non-rotatably connected to the output shaft 10.
  • An outlet cover 11 is provided on the upper part of the motor unit 3b.
  • a discharge port 11a is formed on the outlet cover 11.
  • the discharge port 11a is a portion for discharging the fuel pumped by the fuel pump 3.
  • the fuel is pumped to the internal combustion engine via the discharge port 11a.
  • the discharge port 11a is provided with a check valve 12 for preventing backflow of fuel.
  • a step portion 11b is formed on the lower outer periphery of the outlet cover 11.
  • the pump portion 3a and the motor portion 3b are covered with the housing case 13.
  • the upper end portion of the housing case 13 is configured as a crimping portion 13a.
  • the crimping portion 13a is crimped to the stepped portion 11b of the outlet cover 11, and the outlet cover 11 is integrated with the motor portion 3b.
  • the pump unit 3a and the motor unit 3b are integrated.
  • the integrated pump portion 3a and motor portion 3b (that is, the fuel pump 3) are supported inside the holder portion 4.
  • the holder portion 4 is made of a resin material.
  • the holder portion 4 is composed of a lower cup 9, an upper cup 8 provided on the upper side of the lower cup 9, and a flange unit 7 provided on the upper side of the upper cup 8 and fixed to the upper wall 2a of the fuel tank 2. There is.
  • the lower cup 9 is formed in a bottomed cylindrical shape.
  • the axial direction of the lower cup 9 is along the axial direction D1 of the fuel pump 3.
  • the outer peripheral surface of the lower cup 9 is provided with an engaging convex portion (not shown) that projects outward in the radial direction D2.
  • the lower cup 9 is engaged with the upper cup 8 by the engaging protrusion.
  • the upper cup 8 includes a cylindrical cup body 8a that covers the outer peripheral surface of the fuel pump 3.
  • the axial direction of the cup body 8a is along the axial direction D1 of the fuel pump 3.
  • engaging pieces (not shown) extending downward are formed at equal intervals in a plurality of circumferential directions.
  • An engaging hole (not shown) is formed in the engaging piece.
  • the engaging hole of the engaging piece engages with the engaging convex portion provided on the lower cup 9.
  • the integrated upper cup 8 and lower cup 9 support the fuel pump 3.
  • the flange unit 7 provided on the upper side of the upper cup 8 includes a disk-shaped unit body 7a.
  • the unit main body 7a is inserted from the outside (upper side) into the opening 2h formed in the upper wall 2a of the fuel tank 2 and attached to the upper wall 2a. At this time, the upper surface of the flange unit 7 is exposed to the outside of the fuel tank 2.
  • the flange unit 7 is provided with a fuel take-out pipe 7b that communicates with the discharge port 11a of the fuel pump 3.
  • the fuel discharged from the discharge port 11a is pressure-fed to an internal combustion engine (not shown) via the fuel take-out pipe 7b.
  • the flange unit 7 is provided with a connector 7d that opens outward in the radial direction D2.
  • the connector 7d is capable of connecting a power supply harness connected to an external power source and a signal harness connector (neither shown) for outputting a sender gauge detection signal to an external control device.
  • a fuel flow path 7e communicating with the discharge port 11a is formed inside the flange unit 7.
  • the fuel discharged from the discharge port 11a flows through the fuel flow path 7e.
  • the fuel flow path 7e has a fuel take-out flow path 7f that communicates the discharge port 11a with the internal combustion engine, and a return flow path 7g that branches from the fuel take-out flow path 7f to the side opposite to the internal combustion engine.
  • the fuel take-out flow path 7f extends upward from the discharge port 11a.
  • the upper end of the fuel take-out flow path 7f communicates with the fuel take-out pipe 7b.
  • the return flow path 7g communicates the discharge port 11a with the pressure regulator 6.
  • the return flow path 7g is a horizontal flow path 40 extending in the horizontal direction from the upper end of the fuel take-out flow path 7f, and a vertical flow path 40 extending downward from the end of the horizontal flow path 40 opposite to the fuel take-out pipe 7b. It has a flow path 41 and.
  • a pressure regulator 6 is arranged in the vertical DC path 41 of the return flow path 7 g.
  • the pressure regulator 6 communicates with the discharge port 11a via the fuel flow path 7e.
  • the pressure regulator 6 suppresses the fuel pressure of the fuel discharged from the discharge port 11a to a constant value.
  • FIG. 2 is a perspective view of the filter 30.
  • FIG. 3 is a plan view of the annular portion 33 of the filter 30.
  • FIG. 3 is a plan view of the annular portion 33 as viewed from below.
  • a filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the filter 30 is arranged in the vertical DC path 41 of the return flow path 7 g.
  • the filter 30 is provided in the immediate vicinity of the pressure regulator 6.
  • the filter 30 filters the fuel discharged from the discharge port 11a.
  • the filter 30 includes a frame body 31 formed in a conical shape and a mesh-shaped filter body 32 attached to the frame body 31.
  • the frame 31 is made of a resin material.
  • the length of the frame 31 in the axial direction D1 is, for example, 20 ⁇ m to 30 ⁇ m.
  • the frame body 31 has an annular portion 33 and a side surface portion 34.
  • the annular portion 33 is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e.
  • the annular portion 33 is fixed to the vertical DC path 41 by, for example, being press-fitted.
  • the annular portion 33 is press-fitted so that dust is not generated during press-fitting.
  • the annular portion 33 has a metal frame 35 formed in an annular shape on the inner peripheral portion 33a.
  • the metal frame 35 is made of a metal material such as stainless steel that does not easily rust.
  • the metal frame 35 is provided in the annular portion 33 inside the annular portion 33 by, for example, insert molding.
  • the metal frame 35 and the portion of the annular portion 33 formed of the resin material have the same length in the axial direction D1.
  • the metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1.
  • the side surface portion 34 extends upward from the annular portion 33 along the axial direction D1 and is formed to taper as it is separated from the annular portion 33.
  • the side surface portion 34 has an annular end portion 34a at an end portion of the end portion in the axial direction D1 opposite to the annular portion 33, and a rod-shaped portion 34b connecting the annular portion 33 and the annular end portion 34a. ing.
  • the annular end portion 34a is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e.
  • the inner diameter of the annular end portion 34a is smaller than the inner diameter of the annular portion 33.
  • the rod-shaped portion 34b is a rod-shaped member extending in a straight line. A plurality of rod-shaped portions 34b are provided between the annular portion 33 and the annular end portion 34a.
  • the filter body 32 is attached to the frame 31 from the inside. Specifically, the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a. The filter main body 32 attached between the annular portion 33 and the annular end portion 34a is attached along the rod-shaped portion 34b. For example, a corrosive cloth is used for the filter body 32.
  • the filter unit 5 is connected to the pump portion 3a of the fuel pump 3 on the lower side of the lower cup 9.
  • the filter unit 5 includes a suction filter 5a that filters fuel.
  • the suction filter 5a communicates with the suction portion 21 of the pump portion 3a via the suction pipe 5b. Therefore, when the fuel in the fuel tank 2 is sucked by the fuel pump 3, the fuel in the fuel tank 2 is filtered by the suction filter 5a.
  • the filtered fuel is introduced into the suction section 21 of the pump section 3a via the suction pipe 5b.
  • the fuel introduced into the suction unit 21 passes through the inside of the pump unit 3a and is pumped to the upper side of the motor unit 3b.
  • the pumped fuel passes through the fuel flow path 7e. Then, the fuel that has passed through the fuel flow path 7e is pumped to the internal combustion engine (not shown) through the fuel take-out pipe 7b.
  • the fuel discharged from the discharge port 11a of the fuel pump 3 is pressure-fed to the internal combustion engine via the fuel flow path 7e and the fuel take-out pipe 7b.
  • a part of the fuel also fills the inside of the return flow path 7g. That is, the fuel in the fuel take-out flow path 7f, the fuel take-out pipe 7b, and the return flow path 7g has the same pressure.
  • the pressure regulator 6 acts, and a part of the fuel is returned from the pressure regulator 6 into the holder portion 4.
  • the fuel in the return flow path 7 g flows through the filter 30 to the pressure regulator 6.
  • the fuel pressure in the fuel flow path 7e, the fuel take-out pipe 7b, and the return flow path 7g is returned within a certain value.
  • the filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the wax for example, copper powder
  • the abrasion powder generated by the sliding between the brush and the commitator is mixed in the fuel as foreign matter.
  • burrs generated during molding of the holder portion 4 may flow into the fuel as foreign matter.
  • the fuel discharged from the discharge port 11a can be filtered before reaching the pressure regulator 6.
  • the fuel flow path 7e branches from the fuel take-out flow path 7f, which communicates the discharge port 11a with the internal combustion engine, and the fuel take-out flow path 7f to the opposite side of the internal combustion engine, and communicates the discharge port 11a with the pressure regulator 6. It has a return flow path of 7 g.
  • the filter 30 is arranged in the return flow path 7g. According to the above configuration, by providing the filter 30 in the return flow path 7g, the internal combustion engine by the filter 30 can be obtained as compared with the case where the filter 30 is provided in the middle of the flow path from the discharge port 11a to the internal combustion engine. It is possible to reduce the resistance of the flowing fuel. Therefore, the fuel can be smoothly pumped to the internal combustion engine.
  • the fuel flowing through the return flow path 7g can be filtered before reaching the pressure regulator 6, it is possible to prevent foreign matter from clogging the pressure regulator 6. As a result, the function of the pressure regulator 6 can be maintained. Therefore, the function of the pressure regulator 6 can be maintained while smoothly pumping the fuel to the internal combustion engine. Further, since the fuel pumped to the internal combustion engine does not pass through the filter 30, the filter 30 can be miniaturized accordingly. Therefore, the fuel supply device 1 can be miniaturized.
  • the fuel supply device 1 includes a holder portion 4 that houses the fuel pump 3 inside.
  • the holder portion 4 has a fuel flow path 7e.
  • the fuel pump 3 and the pressure regulator 6 and the filter 30 arranged in the fuel flow path 7e can be provided inside the holder portion 4.
  • each component of the fuel supply device 1 can be integrated by the holder portion 4, so that the fuel supply device 1 can be easily assembled to the fuel tank 2. Further, the number of parts can be reduced, and the manufacturing cost of the fuel supply device 1 can be reduced.
  • the filter 30 includes a conical frame 31 and a mesh-shaped filter body 32 attached to the frame.
  • the frame 31 extends from the annular portion 33 formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e, and the annular portion 33 along the axial direction D1. It has a side surface portion 34, which is formed so as to be separated from the 33.
  • the filter main body 32 is attached to the side surface portion 34.
  • the frame body 31 is composed of only the annular portion 33, and the surface area of the filter main body 32 can be increased as compared with the case where the filter main body 32 is attached to the annular portion 33. Therefore, the corresponding years of the filter main body 32 can be extended. Further, since the amount of fuel passing through the filter main body 32 at one time can be increased, the fuel can be filtered more efficiently.
  • the holder portion 4 and the frame body 31 are formed of a resin material. According to the above configuration, since the holder portion 4 and the frame body 31 can be formed of the same resin material, the fuel supply device 1 can be efficiently manufactured. That is, the productivity of the fuel supply device 1 can be improved. By using the same material for the holder portion 4 and the frame body 31, the coefficient of linear expansion of the holder portion 4 and the frame body 31 can be made the same. As a result, it is possible to prevent the frame 31 once press-fitted and fixed to the fuel flow path 7e from being displaced.
  • the annular portion 33 has a metal frame 35 on the inner peripheral portion 33a.
  • the annular portion 33 receives a reaction force from the fuel flow path 7e.
  • the annular portion 33 may be deformed and the annular portion 33 may be loosened.
  • the metal frame 35 made of a metal material having a rigidity higher than that of the resin material presses the annular portion 33 from the inner peripheral portion 33a side toward the fuel flow path 7e. As a result, the annular portion 33 can be reliably fixed to the fuel flow path 7e.
  • FIG. 4 is a cross-sectional view of the fuel supply device 1.
  • the second embodiment is different from the first embodiment described above in that, as shown in FIG. 4, the filter 30 is provided directly below the discharge port 11a in the fuel distribution direction.
  • the filter 30 is provided directly below the discharge port 11a in the fuel distribution direction. As a result, the fuel supply device 1 can be reduced in the axial direction D1 and downsized.
  • the pump unit 3a is, for example, a non-volumetric pump having an impeller 16, but the present invention is not limited to this.
  • the pump unit 3a may pump fuel and pump it.
  • the filter 30 is provided in the immediate vicinity of the pressure regulator 6 (first embodiment), or the filter 30 is provided directly below the discharge port 11a in the fuel flow direction (second embodiment). ), but it is not limited to this.
  • the filter 30 may be arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the filter 30 is arranged so that the annular portion 33 is on the lower side and the side surface portion 34 is on the upper side, but the present invention is not limited to this.
  • the filter 30 may be able to filter the fuel.
  • the filter 30 may be arranged so that the annular portion 33 is on the upper side and the side surface portion 34 is on the lower side.
  • the filter 30 is not limited to the case where the annular portion 33 of the frame body 31 is press-fitted and fixed to the fuel flow path 7e.
  • the filter 30 may be arranged so that the annular portion 33 of the frame body 31 is annular when viewed from the axial direction D1.
  • the gap between the annular portion 33 and the fuel flow path 7e can be eliminated, so that there is an advantage in that all the fuel passing through the filter 30 can be filtered.
  • the frame 31 of the filter 30 is formed in a conical shape, but the present invention is not limited to this.
  • the frame 31 may have a shape that allows the filter 30 to satisfy the filtration function.
  • the frame body 31 may be composed of only the annular portion 33. That is, the frame body 31 may be formed in an annular shape.
  • the frame 31 of the filter 30 is made of a resin material, but the present invention is not limited to this.
  • the frame 31 may be made of an elastically deformable material for press fitting into the fuel flow path 7e.
  • the frame 31 may be made of a metal material.
  • the length of the frame 31 in the axial direction D1 is, for example, 20 ⁇ m to 30 ⁇ m, but the length is not limited to this.
  • the frame 31 may be large enough to be arranged in the fuel flow path 7e.
  • the annular portion 33 of the frame body 31 has a metal frame 35 on the inner peripheral portion 33a, but the present invention is not limited to this.
  • the annular portion 33 may be press-fitted into the fuel flow path 7e, and may not have the metal frame 35 on the inner peripheral portion 33a.
  • the metal frame 35 and the portion formed by the resin material of the annular portion 33 have the same length in the axial direction D1, but the length is not limited to this.
  • the metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33.
  • the length of the metal frame 35 and the portion of the annular portion 33 formed of the resin material do not have to be the same in the axial direction D1.
  • the metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1, but the present invention is not limited to this.
  • the metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33.
  • the metal frame 35 does not have to be exposed.
  • the metal frame 35 may be exposed only at the lower end of the annular portion 33 in the axial direction D1.
  • the metal frame 35 may be exposed inside the radial direction D2 of the annular portion 33.
  • the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a, but the present invention is not limited to this.
  • the filter body 32 may be attached so that the fuel can be filtered.
  • the filter body 32 may also be attached to the inside of the annular portion 33.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en carburant qui peut empêcher l'obstruction d'un régulateur de pression par la matière étrangère contenue dans le carburant et qui peut maintenir la fonction du régulateur de pression. Ce dispositif d'alimentation en carburant (1) comprend : une pompe à carburant (3) qui aspire du carburant, qui comporte un orifice d'évacuation (11a) pour évacuer le carburant qui a été aspiré et qui pompe le carburant vers un moteur à combustion interne par l'intermédiaire de l'orifice d'évacuation (11a) ; un régulateur de pression (6) qui communique avec l'orifice d'évacuation (11a) par l'intermédiaire d'un passage de carburant (7e) et qui régule la pression de carburant du carburant évacué par l'orifice d'évacuation (11a) à une valeur fixe ; et un filtre (30) qui est disposé dans le passage de carburant (7e) entre l'orifice d'évacuation (11a) et le régulateur de pression (6) pour filtrer le carburant.
PCT/JP2021/016846 2020-04-30 2021-04-27 Dispositif d'alimentation en carburant WO2021221072A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180029791.9A CN115461534A (zh) 2020-04-30 2021-04-27 燃料供给装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-080595 2020-04-30
JP2020080595A JP7345428B2 (ja) 2020-04-30 2020-04-30 燃料供給装置

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WO2021221072A1 true WO2021221072A1 (fr) 2021-11-04

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PCT/JP2021/016846 WO2021221072A1 (fr) 2020-04-30 2021-04-27 Dispositif d'alimentation en carburant

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JP (1) JP7345428B2 (fr)
CN (1) CN115461534A (fr)
WO (1) WO2021221072A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004232495A (ja) * 2003-01-28 2004-08-19 Mikuni Corp 燃料供給システム
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JP2013096254A (ja) * 2011-10-28 2013-05-20 Keihin Corp 燃料供給ユニット
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JP2017210899A (ja) * 2016-05-24 2017-11-30 愛三工業株式会社 燃料通路構造

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