WO2012086640A1 - 燃料供給装置 - Google Patents

燃料供給装置 Download PDF

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Publication number
WO2012086640A1
WO2012086640A1 PCT/JP2011/079497 JP2011079497W WO2012086640A1 WO 2012086640 A1 WO2012086640 A1 WO 2012086640A1 JP 2011079497 W JP2011079497 W JP 2011079497W WO 2012086640 A1 WO2012086640 A1 WO 2012086640A1
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WO
WIPO (PCT)
Prior art keywords
fuel
flow path
supply device
discharge port
fuel supply
Prior art date
Application number
PCT/JP2011/079497
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English (en)
French (fr)
Japanese (ja)
Inventor
淳 宮木
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 BR112013015733-0A priority Critical patent/BR112013015733B1/pt
Priority to CN201180061108.6A priority patent/CN103261657B/zh
Publication of WO2012086640A1 publication Critical patent/WO2012086640A1/ja

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    • 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
    • F02M37/103—Mounting pumps on fuel tanks

Definitions

  • This invention relates to a fuel supply apparatus.
  • This application claims priority based on Japanese Patent Application No. 2010-288663 filed in Japan on December 24, 2010, the contents of which are incorporated herein by reference.
  • a so-called in-tank type fuel supply device in which a fuel pump is disposed in a fuel tank is used as a fuel supply device for a motorcycle or a four-wheeled vehicle.
  • a flange unit is arranged at the upper part of the fuel pump and attached to the upper part of the fuel tank (hereinafter referred to as “superscript type”), and a flange unit is arranged at the lower part of the fuel pump.
  • superscript type a structure attached to the bottom of the fuel tank
  • the subordinate type fuel supply apparatus includes a fuel pump, a flange unit that is disposed at the lower end of the fuel pump and is attached to the fuel tank, and an upper cup that covers the fuel pump from the outside.
  • the fuel pumped up by the fuel pump is guided to the outside from the bottom wall side of the fuel tank and is pumped toward the engine.
  • a fuel flow path unit composed of a first flow path pipe and a second flow path pipe for guiding fuel from the upper part of the fuel pump to the bottom wall of the fuel tank is integrally formed on the outer side of the upper cup. It is molded (see, for example, Patent Document 1).
  • a pressure regulator is provided above the first flow path pipe arranged outside the upper cup.
  • the pressure regulator is a member for returning the fuel in the fuel flow path to the fuel tank when excessive pressure is applied in the fuel flow path and always keeping the fuel pressure in the fuel flow path constant.
  • the pressure regulator of Patent Document 1 is disposed above the fuel flow path formed in the upper cup. Furthermore, this fuel flow path is arrange
  • the pressure regulator when the pressure regulator is disposed horizontally along the upper surface of the upper cup, the amount of protrusion of the pressure regulator increases, so that the periphery of the upper cup is further enlarged.
  • an object of the present invention is to provide a fuel supply device that can suppress an increase in size around the upper cup.
  • a fuel supply device includes a flange unit attached to an opening on a bottom surface of a fuel tank, a case body attached to the flange unit, and a case body.
  • a fuel pump that discharges fuel in the fuel tank from a fuel discharge port, a fuel passage through which the fuel discharged from the fuel discharge port passes, and a pressure regulator that maintains a constant pressure of the fuel in the fuel flow channel And having.
  • a discharge port fitting portion to which the fuel discharge port is connected and a housing portion in which the pressure regulator is held are formed to protrude from the upper portion of the case body, and the discharge port fitting portion and the The fuel flow path is integrally formed above the housing portion.
  • the discharge port fitting portion to which the fuel discharge port is connected and the accommodating portion in which the pressure regulator is held project from the upper portion of the case body. Yes. Therefore, for example, the axial length of the fuel supply device is shortened as compared with the case where the pressure regulator and the fuel flow path are arranged above the fuel flow path as in Patent Document 1, for example. Furthermore, the amount of protrusion in the radial direction can be suppressed by arranging the discharge port fitting portion and the accommodating portion on the central axis of the fuel pump. Therefore, the fuel discharge port, the fuel flow path, and the pressure regulator can be efficiently arranged, and the fuel supply device can be reduced in size and layout can be improved.
  • the fuel supply device when the fuel supply device is inserted and assembled from the fuel tank opening, the fuel supply device comes into contact with the periphery of the fuel tank opening or peripheral parts. Even the pressure regulator and check valve are protected. Similarly, the pressure regulator and the check valve are protected when the fuel supply device is packed or transported. Furthermore, the pressure regulator is a precision component that always adjusts the fuel pressure with high accuracy. Therefore, by protecting the pressure regulator, it is possible to maintain the highly accurate fuel pressure adjustment function of the fuel supply device for a long period of time.
  • the fuel flow path includes a first flow path connected to the fuel discharge port of the fuel pump, and a second flow path connected to the pressure regulator. And a third flow path formed along the axial direction of the case body and led out of the fuel tank.
  • the first flow path and the second flow path are arranged on a straight line.
  • the first flow path and the second flow path are arranged in a straight line. Therefore, the mold configuration when the fuel flow path is molded can be simplified. Therefore, a low-cost fuel supply device can be provided.
  • the discharge port fitting portion, the housing portion, and the fuel flow path are provided on the same center line of the fuel pump.
  • the fuel is guided to the outside of the fuel tank by connecting the pressure regulator, the fuel discharge port, and the fuel flow path through the shortest path. For this reason, protrusion from the outer peripheral surface of the fuel pump of a fuel discharge port, a fuel flow path, and a pressure regulator can further be suppressed. Therefore, the fuel supply device can be reduced in size and layout.
  • the discharge port fitting portion, the housing portion, and the fuel flow path are connected to each other by a wall portion.
  • the discharge port fitting portion, the accommodating portion, and the fuel flow path are connected to each other by the wall portion, thereby being reinforced together. Therefore, the rigidity of the discharge port fitting part, the accommodating part, and the fuel flow path that protrude from the upper cup can be increased.
  • a pair of motor terminals for supplying electric power to the fuel pump is provided on the upper wall surface side of the case body of the fuel pump, and the upper An opening that can expose the motor terminal to the outside is formed at a position corresponding to the pair of motor terminals on the wall surface.
  • the pair of motor terminals can be arranged by effectively utilizing the dead space formed on the upper wall of the case body.
  • the fuel supply device can be reduced in size and layout.
  • the pair of motor terminals and the opening are disposed on both sides of the center line of the pump.
  • the pair of motor terminals can be arranged by effectively utilizing the dead space formed on the upper wall of the case body.
  • the fuel supply device can be reduced in size and layout.
  • the discharge port fitting portion to which the fuel discharge port is connected and the accommodating portion in which the pressure regulator is held project from the upper portion of the case body. Therefore, for example, the axial length of the fuel supply device is shortened as compared with the case where the pressure regulator and the fuel flow path are arranged above the fuel flow path as in Patent Document 1, for example. Furthermore, the protrusion amount to a radial direction can be suppressed by arrange
  • the pressure regulator and the check valve are protected even if the fuel supply device contacts the periphery of the fuel tank opening or peripheral parts.
  • the pressure regulator and the check valve are protected when the fuel supply device is packed or transported.
  • the pressure regulator is a precision component that always adjusts the fuel pressure with high accuracy. Therefore, by protecting the pressure regulator, it is possible to maintain the highly accurate fuel pressure adjustment function of the fuel supply device for a long period of time.
  • FIG. 1 is a perspective view of a fuel supply device according to an embodiment of the present invention. It is a top view of the fuel supply apparatus which concerns on one Embodiment of this invention when it sees from the center axis direction of a fuel pump.
  • FIG. 3 is a cross-sectional view taken along line AA in FIG. 2.
  • the in-tank fuel supply device has a structure in which the flange unit is disposed on the upper part of the fuel pump and attached to the upper part of the fuel tank (hereinafter referred to as “upper type”), and the flange unit is provided on the lower part of the fuel pump.
  • upper type the flange unit is disposed on the upper part of the fuel pump and attached to the upper part of the fuel tank
  • subsequent type a structure that is arranged and attached to the bottom of the fuel tank.
  • the subscript type will be described as an example. Further, the relative position in the axial direction of the fuel pump is simply expressed as the upper side and the lower side.
  • FIG. 1 is a perspective view of a fuel supply device 1 according to the present embodiment.
  • FIG. 2 is a plan view of the fuel supply device 1 according to the present embodiment when viewed from the central axis direction of the fuel pump 3.
  • FIG. 3 is a cross-sectional view taken along line AA in FIG.
  • the fuel supply device 1 of the present embodiment is disposed in a fuel tank 2 (see FIG. 3) and pumps up fuel in the fuel tank 2 and pumps it to an internal combustion engine. 3 is provided.
  • the fuel pump 3 is formed in a substantially cylindrical shape, and includes a motor unit 30 disposed on the upper side of the fuel pump 3 and a pump unit 40 disposed on the lower side of the fuel pump 3.
  • the outer peripheral surface of the fuel pump 3 is formed by a cylindrical housing made of, for example, metal.
  • a DC motor with a brush (not shown) is used.
  • a pair of motor terminals 32 that are electrically joined to the brushes are provided in a state where they are erected along the central axis C on the upper side of the fuel pump 3.
  • the pair of motor terminals 32 are arranged on both sides of the center axis C of the fuel pump 3.
  • each motor terminal 32 is arranged in the vicinity of the outer peripheral surface of the fuel pump 3 symmetrically with respect to the central axis C. Therefore, a sufficient separation distance can be ensured between the motor terminals 32.
  • one side of the harness 6 is connected to the pair of motor terminals 32.
  • the external power source and the motor unit 30 are electrically connected by the harness 6, and electric power for driving the motor unit 30 is supplied from the external power source.
  • a non-volumetric pump having an impeller (not shown) is used.
  • the impeller is driven by the motor unit 30.
  • a suction port (not shown) for sucking fuel is provided below the pump unit 40.
  • the suction port is a reservoir formed below the fuel pump 3 via a filter discharge pipe 51 (to be described later), a filter unit (not shown) separate from the fuel supply device 1, and a filter introduction pipe (not shown). It communicates with the section 11 (see FIG. 3).
  • a discharge port for discharging fuel is provided on the upper side of the pump unit 40.
  • the fuel pump 3 pumps the fuel stored in the reservoir unit 11 from the suction port of the pump unit 40 through the filter discharge pipe 51, a separate filter unit, and the filter introduction pipe.
  • the pump unit 40 pumps fuel to the fuel discharge port 31 disposed on the upper side of the motor unit 30.
  • a check valve 74 is provided above the fuel pump 3. Specifically, the check valve 74 is provided between the fuel discharge port 31 disposed on the upper side of the motor unit 30 and a first flow path 53 of a fuel flow path unit 52 described later.
  • the check valve 74 is a member for preventing fuel from flowing backward from the first flow path 53 into the fuel pump 3.
  • the check valve 74 shifts to a valve open state. Then, the fuel is discharged from the fuel discharge port 31 and is pumped into the first flow path 53 of the fuel flow path unit 52 via the check valve 74.
  • the check valve 74 shifts to a closed state. The fuel is held in the first flow path 53 without being discharged through the check valve 74.
  • the fuel supply device 1 includes a flange unit 4 that is disposed below the fuel pump 3 and attached to the bottom wall 2 b of the fuel tank 2.
  • the flange unit 4 has a cylindrical unit body 10 having a bottom.
  • the unit body 10 is a member made of a resin having excellent oil resistance and is molded by injection.
  • the unit main body 10 is mainly composed of a substantially disk-shaped flange portion 12, a connector 14 formed on the lower side of the flange portion 12, and an engagement portion 15 formed on the upper side of the flange portion 12. ing. Further, a filter introduction pipe, a filter discharge pipe 51, and a fuel take-out pipe 57 that form a fuel flow path are formed below the flange portion 12. Further, a space is formed on the inner surface side of the unit body 10. This space functions as a reservoir 11 (see FIG. 3) in which fuel is stored. The fuel stored in the reservoir unit 11 is pumped up to the pump unit 40 via a filter unit separate from the fuel supply device 1.
  • a substantially disc-shaped flange portion 12 is formed on the lower peripheral wall of the unit body 10. Then, by attaching the fuel supply device 1 to the fuel tank 2, the lower side than the flange portion 12 is exposed to the outside of the fuel tank 2. Further, the upper side of the flange portion 12 is immersed in the fuel in the fuel tank 2. A seal member (not shown) made of rubber or the like is provided between the flange portion 12 and the bottom wall 2b of the fuel tank 2. Therefore, the sealing performance between the fuel supply device 1 and the fuel tank 2 can be reliably ensured.
  • an engaging portion 15 that engages with an engaging convex portion 25 a formed on a large-diameter portion 26 of an upper cup 25 described later is provided on the upper side of the flange portion 12.
  • the engaging portion 15 is formed in a substantially circular shape having a smaller diameter than the annular portion 13 when viewed from the axial direction.
  • a plurality of engaging pieces 15 a that protrude upward are formed at the periphery of the engaging portion 15 (four in this embodiment).
  • the engagement piece 15a is formed so as to be elastically deformable in the direction in which the upper end of the engagement piece 15a expands in diameter.
  • the engagement piece 15a is formed with an engagement hole that can be engaged with the engagement convex portion 25a formed in the upper cup 25.
  • the flange unit 4 and the upper cup 25 are fixed by snap-fitting the engaging portion 15 to the large-diameter portion 26 of the upper cup 25.
  • a filter introduction pipe, filter discharge pipe, and fuel extraction pipe are provided below the flange portion 12.
  • the filter introduction pipe and the filter discharge pipe 51 communicate with a filter unit provided separately from the fuel supply device 1.
  • the fuel in the fuel tank 2 is introduced into the filter unit through the filter introduction pipe. Further, the fuel filtered and discharged by the filter unit is introduced into the suction port of the pump unit 40 through the filter discharge pipe 51.
  • the fuel extraction pipe 57 communicates with an internal combustion engine (not shown).
  • the fuel stored in the reservoir unit 11 passes through the filter unit and is then pumped up from the suction port of the pump unit 40. Then, the fuel is pumped to the upper side of the motor unit 30, passes through each fuel flow path described later, and then is conveyed to the internal combustion engine through the fuel take-out pipe 57.
  • a connector 14 is integrally formed on the lower side of the flange portion 12.
  • the connector 14 is a cylindrical member having a bottom and has a connector fitting surface that opens radially outward.
  • the connector 14 is injection molded at the same time as the unit body 10 is formed.
  • the connector 14 is fitted with an external connector (not shown) that is electrically connected to an external power source, a control device, or the like.
  • a connector terminal 34 that conducts the inside and outside of the fuel tank 2 is provided.
  • the connector terminal 34 is a member made of a metal such as copper and is formed by pressing.
  • the connector terminal 34 is insert-molded, for example, when the connector 14 is molded.
  • Each connector terminal 34 is electrically connected to the motor driving power source and the power source of the liquid level detector 60.
  • the connector terminal 34 is formed in a substantially L shape.
  • One end side 34 a of the connector terminal 34 protrudes inside the connector 14.
  • the other end side 34 b of the connector terminal 34 protrudes above the flange portion 12 on the inner diameter side of the outer peripheral surface of the engaging portion 15.
  • the other end side 34b of the connector terminal 34 is connected to a connection terminal 33b on the other side of the harness 6 described later.
  • the harness 6 is a member for connecting the connector terminal 34, the motor terminal 32, and the terminal of the liquid level detector 60.
  • the harness 6 is formed by a core wire made of a metal such as copper and a coating covering the core wire made of an insulating material having oil resistance such as crosslinked polyethylene or vinyl chloride. Furthermore, a connection terminal 33a is provided on one end side of the harness 6, and a connection terminal 33b is provided on the other end side.
  • connection terminal 33 a on one end side of the harness 6 is connected to the motor terminal 32 and the terminal of the liquid level detector 60.
  • connection terminal 33a on one end side is inserted through an opening 28 of the upper cup 25 described later.
  • connection terminal 33 b is connected to the other end side 34 b of the connector terminal 34 protruding above the flange portion 12. Therefore, electric power can be supplied from the external power source to the motor unit 30 and the liquid level detector 60 via the harness 6. Furthermore, the signal of the liquid level detector 60 can be output to the control device.
  • the harness 6 is disposed on the outer side of a cylindrical portion 24 of an upper cup 25 described later. The movement of the harness 6 is restricted by a clip 29 provided on the outer peripheral surface of the cylindrical portion 24 of the upper cup 25.
  • the fuel supply device 1 includes an upper cup 25 (corresponding to a “case body” in the claims) formed so as to contain the fuel pump 3.
  • the upper cup 25 is a cylindrical member having a bottom portion formed of a resin excellent in oil resistance, and is molded by injection.
  • the upper cup 25 has a cylindrical portion 24 that is externally inserted into the fuel pump 3 from above the fuel pump 3.
  • a liquid level detector 60 is disposed above the upper cup 25. Therefore, an attachment portion 61 for the liquid level detector 60 is formed on the upper side of the cylindrical portion 24.
  • the attachment portion 61 is a plate-like member that extends outward in the radial direction.
  • the attachment portion 61 is molded by injection at the same time as the upper cup 25 is formed.
  • the liquid level detector 60 is fixed to the mounting portion 61 by a snap fit or the like.
  • a clip 29 is integrally formed on the peripheral wall of the upper cup 25.
  • the clip 29 is formed at a location corresponding to the position where the harness 6 is disposed (in the present application, on the upper side of the connector terminal 34), and holds the harness 6.
  • the clip 29 suppresses flapping of the harness 6 due to vibration when the vehicle travels. Further, the slack of the harness 6 is prevented, and the harness 6 is restrained from being caught on the fuel tank 2 and the peripheral parts of the fuel tank when the fuel supply device 1 is assembled.
  • the cylindrical portion 24 of the upper cup 25 is configured by a small diameter portion 27 disposed on the upper side and a large diameter portion 26 disposed on the lower side.
  • the small diameter portion 27 is fitted to the upper side of the fuel pump 3 from the outside.
  • the small diameter portion 27 is formed so that its central axis is coaxial with the central axis C of the fuel pump 3.
  • the inner peripheral surface of the small diameter portion 27 is formed to be substantially the same as or slightly larger than the outer diameter of the fuel pump 3.
  • the large diameter portion 26 is formed by expanding the lower side of the small diameter portion 27 and providing a step.
  • the large-diameter portion 26 is formed such that its central axis is shifted to the outer diameter side from the small-diameter portion 27 and the central axis C of the fuel pump 3. That is, the large-diameter portion 26, the small-diameter portion 27, and the fuel pump 3 are provided eccentrically when viewed from the axial direction.
  • an engagement convex portion 25a is formed at a position corresponding to the engagement hole of the engagement piece 15a provided in the flange unit 4.
  • the engagement projection 25a of the upper cup 25 and the engagement piece 15a of the flange unit 4 are snap-fitted to each other so that the upper cup 25 and the flange unit 4 are integrated.
  • a pair of openings 28 are separately formed on the upper wall surface 27 a of the cylindrical portion 24 corresponding to the motor terminals 32.
  • the opening portion 28 communicates the inside and the outside of the tube portion 24.
  • the outer shape of the opening 28 is larger than the outer shapes of the motor terminal 32 and the connection terminal 33a. Therefore, the motor terminal 32 can be exposed to the outside of the cylindrical portion 24 from the opening portion 28.
  • the connection terminal 33 a can be inserted into the opening 28 and connected to the motor terminal 32.
  • a pair of motor terminals 32 are exposed from the opening 28.
  • the height of the upper wall surface 27a of the cylindrical portion 24 may be set such that the upper end portion of the motor terminal 32 is slightly higher than the upper wall surface 27a of the small diameter portion 27 of the upper cup 25, or slightly lower. May be set.
  • a fuel flow path unit 52 On the upper wall surface 27a of the cylinder portion 24, a fuel flow path unit 52 through which fuel passes, a pressure regulator 76 that keeps the fuel pressure of the fuel flow path unit 52 constant, a storage section 76a for storing the pressure regulator 76, and a fuel pump A discharge port fitting portion 74a for fitting the three fuel discharge ports 31 is provided.
  • the fuel flow path unit 52 is formed in a substantially L-shaped cross section from the upper wall surface 27 a of the cylindrical portion 24 to the outer peripheral surface of the cylindrical portion 24.
  • the fuel flow path unit 52 is mainly configured by the fuel flow paths of the first flow path 53, the second flow path 54, and the third flow path 55.
  • the first flow path 53 is formed in a substantially L shape by extending along the central axis C on the upper side of the check valve 74 and then extending radially outward.
  • the fuel discharged from the fuel pump 3 flows into the first flow path 53 via the check valve 74.
  • the second flow channel 54 extends horizontally from the upper end of the first flow channel 53 toward the radially outer side opposite to the first flow channel 53, and then extends along the central axis C. By extending toward the side, a substantially L-shape is formed. That is, the second flow path 54 is formed above the fuel discharge port 31, a discharge port fitting portion 74 a provided on the upper wall surface 27 a of the cylindrical portion 24, and a pressure regulator 76 described later.
  • the third flow channel 55 extends from the upper side to the lower side along the outer peripheral surface of the small diameter portion 27.
  • the third flow channel 55 is disposed in a dead space formed between the outer peripheral surface of the large-diameter portion 26 and the outer peripheral surface of the small-diameter portion 27 that are arranged eccentrically when viewed from the axial direction. That is, the third flow path 55 is disposed inside the large diameter portion 26 without protruding from the outer peripheral surface of the large diameter portion 26.
  • the lower end portion of the third flow path 55 is connected to a fuel extraction pipe 57 formed on the lower side of the flange unit 4. Therefore, the fuel discharged from the fuel pump 3 passes through each fuel flow path in the order of the first flow path 53, the second flow path 54, and the third flow path 55, passes through the fuel take-out pipe 57, and is not shown. It is conveyed to.
  • a pressure regulator 76 and a housing portion 76a for housing the pressure regulator 76 are provided on the opposite side of the third flow channel 55 across the central axis C.
  • the pressure regulator 76 is a member for keeping the fuel pressure in each fuel flow path constant.
  • the pressure regulator 76 returns the fuel in each fuel flow path into the fuel tank 2 when excessive pressure is applied in each fuel flow path of the fuel flow path unit 52.
  • the pressure regulator 76 and the first flow path 53 are connected via a second flow path 54 formed above the pressure regulator 76 and the accommodating portion 76a.
  • the fuel supply apparatus of patent document 1 is arrange
  • the assembly of the subordinate type fuel supply device is performed by inserting the upper cup side of the fuel pump from the outside of the fuel tank toward the opening of the fuel tank.
  • the tip side of the upper cup comes into contact with the periphery of the opening of the fuel tank or the peripheral parts of the fuel tank, and the function of the pressure regulator may be affected.
  • the pressure regulator 76 is covered with the accommodating portion 76a provided integrally with the cylindrical portion 24 of the upper cup 25. Further, the fuel flow path unit 52 is disposed above the pressure regulator 76. Therefore, when the fuel supply device 1 is assembled, even if the pressure regulator 76 contacts the periphery of the opening 2a of the fuel tank 2 or peripheral parts, the influence on the pressure regulator 76 is suppressed. Further, in the fuel supply device 1 of the present embodiment, the pressure regulator 76 is disposed in the accommodating portion 76a provided integrally with the cylindrical portion 24 of the upper cup 25. Therefore, the pressure regulator 76 can be protected while suppressing an increase in the size of the fuel supply device 1.
  • the upper wall surface 27a of the cylindrical portion 24 is provided with the above-described fuel flow path unit 52, the accommodating portion 76a of the pressure regulator 76, and the wall portion 50 that connects the fuel discharge port.
  • the wall portion 50 is provided in a state where the wall portion 50 is erected upward from the upper wall surface 27a of the cylindrical portion 24. Further, the wall portion 50 extends horizontally on the upper wall surface 27 a of the cylindrical portion 24 along a direction substantially orthogonal to a straight line connecting the pair of motor terminals 32.
  • the wall portion 50 is formed such that the axial height is higher than the height of the connection terminal 33a when the connection terminal 33a is connected to the motor terminal 32.
  • the thickness of the wall 50 is set so as to be substantially the same as or smaller than the separation distance of the motor terminal 32.
  • the horizontal length of the wall portion 50 is set to be substantially the same as or longer than the diameter of the upper wall surface 27a of the cylindrical portion 24.
  • the thin portion 65 is disposed around the fuel flow path unit 52, the fuel discharge port 31, and the accommodating portion 76 a of the pressure regulator 76, outside the fuel flow path unit 52, the fuel discharge port 31, and the accommodating portion 76 a of the pressure regulator 76. It is formed along the diameter.
  • a discharge port fitting portion 74 a to which the fuel discharge port 31 is connected and a housing portion 76 a for holding the pressure regulator 76 are formed protruding from the upper part of the upper cup 25. Yes. Therefore, for example, the axial length of the fuel supply device 1 can be shortened as compared with the case where the pressure regulator 76 and the fuel flow path unit 52 are arranged above the fuel flow path unit 52 as in Patent Document 1, for example. Furthermore, the amount of protrusion in the radial direction can be suppressed by disposing the discharge port fitting portion 74a and the accommodating portion 76a on the central axis of the fuel pump 3.
  • the fuel discharge port 31, the fuel flow path unit 52, and the pressure regulator 76 can be efficiently arranged, and the size and layout of the fuel supply device 1 can be improved. Further, when the fuel supply device 1 is inserted and assembled from the opening 2a of the fuel tank 2, even if the fuel supply device 1 comes into contact with the periphery of the opening 2a of the fuel tank 2 or peripheral parts, the pressure regulator 76 and the check Valve 74 is protected. Similarly, the pressure regulator and the check valve are protected when the fuel supply device 1 is packed or transported. Furthermore, the pressure regulator 76 is a precision component that always adjusts the fuel pressure with high accuracy. Therefore, by protecting the pressure regulator 76, the highly accurate fuel pressure adjustment function of the fuel supply device 1 can be maintained over a long period of time.
  • the first flow path 53 and the second flow path 54 are arranged in a straight line. Therefore, the mold configuration when the fuel flow path unit 52 is molded can be simplified. Therefore, the low-cost fuel supply device 1 can be provided.
  • the fuel can be guided to the outside of the fuel tank 2 by connecting the pressure regulator 76, the fuel discharge port 31, and the fuel flow path unit 52 through the shortest path. For this reason, the protrusion from the outer peripheral surface of the fuel pump 3 of the fuel discharge port 31, the fuel flow path unit 52, and the pressure regulator 76 can further be suppressed. Therefore, the fuel supply device 1 can be reduced in size and layout.
  • the discharge port fitting portion 74a, the accommodating portion 76a, and the fuel flow path unit 52 can be reinforced with each other by being connected by the wall portion 50. Therefore, the rigidity of the discharge port fitting portion 74a, the accommodating portion 76a, and the fuel flow path unit 52 protruding from the upper cup 25 can be increased.
  • the pair of motor terminals 32 can be arranged by effectively utilizing the dead space formed in the upper wall surface 27a of the upper cup 25. Therefore, the fuel supply device 1 can be reduced in size and layout.
  • the present invention is not limited to the embodiment described above.
  • the case where the said structure was applied to what is called a subordinate type fuel supply apparatus was demonstrated.
  • the above structure can also be applied to a so-called top-fitting type fuel supply apparatus.
  • the axial length of the fuel supply device can be shortened as compared with the case where the pressure regulator and the fuel flow path are disposed above the fuel flow path. Furthermore, the amount of protrusion in the radial direction can be suppressed, and the fuel supply device can be reduced in size and layout can be improved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
PCT/JP2011/079497 2010-12-24 2011-12-20 燃料供給装置 WO2012086640A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112013015733-0A BR112013015733B1 (pt) 2010-12-24 2011-12-20 dispositivo de suprimento de combustível
CN201180061108.6A CN103261657B (zh) 2010-12-24 2011-12-20 燃料供给装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010288663A JP5818433B2 (ja) 2010-12-24 2010-12-24 燃料供給装置
JP2010-288663 2010-12-24

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WO2012086640A1 true WO2012086640A1 (ja) 2012-06-28

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JP (1) JP5818433B2 (zh)
CN (1) CN103261657B (zh)
BR (1) BR112013015733B1 (zh)
WO (1) WO2012086640A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11359588B2 (en) * 2020-03-25 2022-06-14 Hitachi Astemo Ltd. Fuel supply device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6318987B2 (ja) * 2013-11-05 2018-05-09 株式会社デンソー 燃料供給装置
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CN103261657B (zh) 2016-02-10
BR112013015733B1 (pt) 2020-12-29
BR112013015733A2 (pt) 2018-11-06

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