WO2013108720A1 - Dispositif d'alimentation en carburant pour moteur à combustion interne - Google Patents

Dispositif d'alimentation en carburant pour moteur à combustion interne Download PDF

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Publication number
WO2013108720A1
WO2013108720A1 PCT/JP2013/050445 JP2013050445W WO2013108720A1 WO 2013108720 A1 WO2013108720 A1 WO 2013108720A1 JP 2013050445 W JP2013050445 W JP 2013050445W WO 2013108720 A1 WO2013108720 A1 WO 2013108720A1
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WIPO (PCT)
Prior art keywords
plunger
intake pipe
pipe member
supply device
fuel supply
Prior art date
Application number
PCT/JP2013/050445
Other languages
English (en)
Japanese (ja)
Inventor
加藤　裕史
友也 佐藤
Original Assignee
株式会社ミクニ
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 株式会社ミクニ filed Critical 株式会社ミクニ
Priority to CN201380006062.7A priority Critical patent/CN104066970B/zh
Priority to BR112014017402A priority patent/BR112014017402A8/pt
Priority to IN5757DEN2014 priority patent/IN2014DN05757A/en
Publication of WO2013108720A1 publication Critical patent/WO2013108720A1/fr
Priority to PH12014501644A priority patent/PH12014501644A1/en

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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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
    • 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
    • F02M37/046—Arrangements for driving diaphragm-type pumps
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/02—Pumps peculiar thereto
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/002—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by internal combustion engines

Definitions

  • the present invention relates to a fuel supply device for an internal combustion engine that pressurizes fuel in a fuel tank to a pressure that can be injected into the internal combustion engine.
  • This fuel injection uses a fuel supply device composed of a pump unit and a drive unit that drives the pump unit, pressurizes fuel from the fuel tank, and leads it to an engine (corresponding to an internal combustion engine). is there.
  • a pump unit and a drive unit on an intake pipe member that forms a part of an intake pipe of an engine so that fuel can be supplied from the vicinity of a fuel injection position.
  • a pump unit as disclosed in Patent Document 1 is attached so as to stand up along the radial direction of the intake pipe member, and a motor unit (a drive unit is attached to the end of the standing pump unit).
  • a suction connection port body receiving fuel from the fuel tank
  • a return fuel connection port body disharging return fuel
  • the motor part (corresponding to the drive part) is attached so as to project to one side in the radial direction intersecting the intake pipe member, and the pump part is assembled to the projecting end of the motor part, and the motor part is used for suction.
  • a structure in which a connection port body and a return fuel connection port body are provided is used.
  • each of the fuel supply devices disclosed in Patent Document 1 and Patent Document 2 has a problem in weight balance around the intake pipe member, and has low vibration resistance against vibration and impact transmitted from the intake pipe member.
  • the fuel supply device of Patent Document 1 has a layout in which a pump portion, a motor portion, a suction connection port body, and a return fuel connection port body project to one side in the radial direction of the intake pipe member.
  • a heavy motor portion is disposed at a point farthest from the intake pipe member, a rotational moment centering on the intake pipe member is likely to occur in the fuel supply device due to a weight deviation.
  • the suction connection port and the return fuel connection port are subjected to the weight of a hose member extending from the fuel tank and a stopper for stopping the hose member. Tends to increase, and a rotational moment tends to occur. For this reason, the fuel supply device lacks weight balance and is likely to shake with respect to vibration (engine vibration, running vibration, etc.) and impact transmitted from the intake pipe member.
  • An object of the present invention is to provide a fuel supply device for an internal combustion engine that has a simple structure and can improve vibration resistance against vibration and impact transmitted from an intake pipe member.
  • a fuel supply device includes a pump unit that pressurizes fuel, a drive unit that drives the pump unit, and a suction connection port body that guides sucked fuel to the pump unit. And a return connection port that discharges return fuel from the pump portion, and the pump portion is disposed on the outer peripheral portion of the intake pipe member that forms part of the intake pipe of the internal combustion engine, in the axial direction of the intake pipe member. Is provided with a drive part at one end of the pump part that intersects the intake pipe member, and a suction connection body and a return connection body at the other end of the intersecting pump part. It is characterized by that.
  • a heavy drive unit is arranged at one end of the pump unit, and a suction connection port connected to a hose member extending from the fuel tank and a return connection port are arranged at the other end on the opposite side.
  • the pump unit uses a configuration having a cylindrical plunger type pump unit that pressurizes fuel by reciprocating movement of the plunger, and the drive unit has a motor unit that reciprocates the plunger.
  • a plunger-type pump part is supported on the outer periphery of the intake pipe member so that the axial direction of the pump part intersects with the axial direction of the intake pipe member, and the plunger-type pump part intersected with the intake pipe member
  • a motor portion is provided at one end of the suction pump, and a suction connection port body and a return connection port body are provided at the other end portion of the intersecting plunger type pump portion.
  • the motor part is arranged in an approximately L shape from one end of the plunger type pump part along the circumferential direction of the intake pipe member, and the center of gravity of the motor part is brought close to the intake pipe member. It is characterized by that.
  • the plunger-type pump portion has a pressure regulator that maintains the discharged fuel at a predetermined pressure on the other end side where the suction connection port body and the return connection port body are disposed. .
  • the invention according to claim 5 is characterized in that the motor part and the plunger type pump part are respectively arranged closest to the outer peripheral part of the intake pipe member.
  • the invention according to claim 6 is characterized in that the motor part and the plunger type pump part are arranged on a circular locus centering on the axis of the intake pipe member.
  • an injector for injecting fuel pressurized by the plunger type pump part into the intake pipe member, and further comprising a support part for supporting the plunger type pump part and the motor part on the intake pipe member.
  • the injector is disposed at an intermediate portion of the plunger-type pump portion that intersects the intake pipe portion, and is installed so as to be able to inject into the intake pipe portion.
  • the support portion includes a plunger-type pump portion and an intake pipe member opposite to the injector. It is characterized by having a stop part that connects between the parts that intersect with each other, and an anti-sway part that suppresses the shake with the plunger pump of the motor part as a fulcrum.
  • the invention according to claim 8 is characterized in that the plunger type pump unit has a diaphragm type pump unit that assists the suction of the plunger type pump unit.
  • the fuel supply device not only distributes the weight of the pump portion to both sides around the intake pipe member, but also when the fuel supply device is installed in a vehicle such as a motorcycle.
  • the other end portion of the body is added with the weight of a hose member connected to these connection port bodies and a stopper for stopping the hose member.
  • the other end side of the pump part having the mouth and the one end side of the pump part having the driving part are easily balanced in weight. Thereby, the shake of a pump part and a drive part is suppressed only by restraint with the hose member extended from a fuel tank.
  • the fuel supply device has a simple structure in which the pump unit, the drive unit, the suction connection port body, and the return connection port body are arranged in a balanced manner, improving vibration resistance against vibrations and shocks transmitted from the intake pipe member, In other words, it is possible to improve vibration resistance in a state where the vehicle is installed in a vehicle such as a motorcycle.
  • the vibration resistance in the fuel supply device using the plunger type pump unit which is difficult to ensure the weight balance with a simple structure, can be improved.
  • the cylindrical plunger-type pump part has its center of gravity approaching the intake pipe member due to the transverse crossing arrangement, and the pump part itself is also difficult to shake, so the overall vibration resistance of the fuel supply device increases. .
  • the heavy motor part since the heavy motor part is brought close to the intake pipe member, the position of the center of gravity of the motor part approaches the intake pipe member. Thereby, the rotational moment centering on the intake pipe member generated in the plunger type pump part is suppressed, and the fuel supply device is more difficult to shake.
  • the heavy pressure regulator is disposed on the other end side of the plunger-type pump having the suction connection port body and the return connection port body, so that the opposite side (motor part) ) And weight. As a result, the fuel supply device becomes more difficult to shake by utilizing the pressure regulator.
  • the rotational moment generated in the motor part and plunger type pump part centering on the intake pipe member is suppressed, and the fuel supply device becomes more difficult to shake.
  • each part of the fuel supply device is more difficult to shake.
  • the injector is installed, and the stop portion and the motor portion which connect the portion where the plunger-type pump portion intersects the intake pipe portion are shaken.
  • the entire fuel supply device can be firmly fixed to the intake pipe portion with a simple structure that only uses the restraining stop portion.
  • the suction function of the plunger-type pump section is enhanced, and the fuel in the fuel tank can be properly supplied to the injector from any fuel tank.
  • FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. Sectional drawing which shows the plunger type pump part, diaphragm type pump part, suction connection port body, return connection port body, a pressure regulator, and a motor part (part) along the BB line in FIG.
  • FIG. 1 is a side view (schematic) of a vehicle, for example, a motorcycle, on which a fuel supply device to which the present invention is applied is installed.
  • An arrow F in FIG. 1 indicates the front direction of the motorcycle, and an arrow R indicates the rear direction of the motorcycle.
  • the motorcycle shown in FIG. 1 has a main frame member extending in the front-rear direction, for example, a main tube member 1 (only a part is shown).
  • a front wheel 5 is suspended from a front end of the main tube member 1 via a front fork 3
  • a rear wheel 9 is suspended from a rear end of the main tube member 1 via a swing arm member 7.
  • the fuel tank 11 and the seat 12 are installed on the main tube member 1 in order from the front side.
  • An acceleration / deceleration system (not shown) such as a brake pedal and a throttle grip is provided on one side (right side) sandwiching the main tube member 1, and a speed change system (not shown) such as a clutch lever and shift pedal is provided on the opposite side (left side). ) Is provided.
  • an internal combustion engine for example, a single-cylinder reciprocating engine 13 (hereinafter simply referred to as the engine) in which a piston 13a is reciprocally moved. 13) is installed.
  • a short pipe member 15 corresponding to an intake pipe member of the present application
  • a throttle valve device 17 are sequentially connected to the side portion of the engine 13, and these include an intake port (not shown) of the engine 13 and an air cleaner (not shown).
  • An intake pipe that communicates with each other is configured.
  • the short pipe member 15 is provided with a fuel supply device 21 together with an electronically controlled injector 19, and these can inject fuel into the short pipe member 15.
  • the perspective view of FIG. 2 shows the entire fuel supply device 21 and the internal structure (dotted line portion), and the exploded perspective view of FIG. 3 shows the fuel supply device 21 removed from the short tube member 15. 4 and 5, the respective parts of the fuel supply device 21 (cross sections taken along lines AA and BB in FIG. 2) are shown.
  • the fuel supply device 21 will be described with reference to FIGS. 2 to 5.
  • the fuel supply device 21 includes a pump unit 25, a drive unit 27 that drives the pump unit 25, and tubular suction ports that are various connection ports.
  • a connection port body 29 and a return connection port body 31 are provided.
  • the pump unit 25 and the drive unit 27 are separate bodies.
  • the pump unit 25, the drive unit 27, and the connection port bodies 29 and 31 are disposed on the outer peripheral portion of the short tube member 15.
  • the pump unit 25 and the drive unit 27 will be described.
  • the pump unit 25 has a cylindrical pump body 33 as shown in FIGS. 2 and 5.
  • the pump main body 33 has a split structure divided into two in the axial direction.
  • Reference numerals 33a and 33b denote divided main body portions and lid portions.
  • the pump unit 25 includes a plunger-type pump unit 35 that houses various pump parts along the axial direction of the pump body 33.
  • This plunger type pump part 35 has a diaphragm type pump part 49 on one end side sandwiching the pump parts of the plunger type pump part 35 and a pressure regulator 61 on the other end side, and is configured in a short cylinder shape. (Figs. 2 and 3).
  • the plunger-type pump unit 35 has a cylindrical sleeve 37 incorporated along the axial direction of the pump body 33 with one end portion as a suction side and the other end portion as a discharge side.
  • the sleeve 37 is configured to include a cylindrical plunger 39 that is reciprocally movable, a suction valve 41 that is assembled in the lumen of the plunger 39, and a discharge valve 43 that is assembled on the discharge side of the sleeve 37.
  • the plunger pump unit 35 guides the fuel (suction fuel) in the plunger 39 to the pressurizing chamber 45 formed at the sleeve end through the suction valve 41, and adds the fuel in the heating chamber 45. It has a structure in which pressurized and pressurized fuel is discharged from the discharge valve 43.
  • the injector 19 is assembled to the pump body 33 of the plunger type pump unit 35.
  • the diaphragm pump 49 includes a diaphragm chamber 51 formed on the suction side of the sleeve 37, a diaphragm 53 provided so as to close the diaphragm chamber 51, and a central portion of the diaphragm 53 at the end of the plunger 39.
  • a columnar fixing tool 55 to be fixed and a suction valve 57 communicating with the diaphragm chamber 51 through a passage 57a are provided.
  • the diaphragm type pump unit 49 amplifies the diaphragm 51, and sucks fuel from the suction valve 57 and guides it into the plunger 39 by the pumping operation in the diaphragm chamber 51 caused by the amplitude.
  • the diaphragm type pump unit 49 assists the insufficient suction function of the plunger type pump unit 35.
  • the diaphragm chamber 51 also communicates with a return fuel discharge valve 59 through a passage 59a.
  • the pressure regulator 61 has a structure in which a discharge chamber 63 formed on the outlet side of the discharge valve 43 is closed with a diaphragm 67 with a relief valve 65 and the diaphragm 67 is pressed by a spring member 69. It is used. That is, in the pressure regulator 61, when the discharge fuel in the discharge chamber 63 is kept at a predetermined pressure due to the displacement of the diaphragm 67 and becomes an excessive fuel pressure, the pressure is applied to the spring chamber 71 containing the spring member 69 through the relief valve 65. Of fuel is released.
  • the discharge chamber 63 communicates with the inlet portion of the injector 19 through a passage 19a and a connection port portion 33c (a portion where the base portion of the injector 19 fits) formed in the pump body 33 described later. The fuel is supplied to the injector 19.
  • a cylindrical motor unit 27 a in which a DC motor 75 is housed in a cylindrical motor case 73 is used.
  • a cam mechanism 77 conversion mechanism that converts rotational motion into reciprocating motion is built in the end of the motor case 73 where the output shaft of the DC motor 75 is disposed.
  • the cam mechanism 77 is configured, for example, by assembling an eccentric cam 79 to the output shaft of the DC motor unit 75 and fitting a frame-shaped cam receiving member 81 to the eccentric cam 79. Converts eccentric rotational motion to reciprocating motion.
  • the output portion of the cam receiving member 81 is disposed on the end portion of the motor case 73, here on the side portion perpendicular to the axial direction of the motor portion 27a.
  • the cylindrical pump unit 25, the cylindrical drive unit 27, and the connection ports 29 and 31 are assembled to the motorcycle so that sufficient vibration resistance is ensured in the installed state.
  • the layout of each part of the fuel supply device 21 is devised.
  • the pump portion 25 is arranged so as to intersect the axial direction of the short tube member 15, and one end portion of the pump portion 25 intersecting the short tube member 15. Is provided with a motor part 27a (drive part 27), and a suction connection port body 29 and a return connection port body 31 are provided at the other end of the pump part 25 on the opposite side.
  • the intermediate portion (axial direction) of the pump portion 25 is disposed on the upper portion of the outer peripheral portion of the short tube member 15 so as to cross the axial direction of the short tube member 15. Is done.
  • the cylindrical plunger-type pump unit 35 is arranged in a lateral direction in which the axial center direction of the plunger-type pump unit 35 and the axial center direction of the short tube member 15 intersect each other, for example, orthogonally intersect with each other. It is attached to the pipe member 15 (arrangement with a low center of gravity).
  • the plunger-type pump part 35 is closest to the outer peripheral part of the short tube member 15 and is arranged at the lowest center of gravity as much as possible.
  • the motor portion 27 a has a side portion of the motor case 73 having the output portion of the cam mechanism 75 so that the driving force is transmitted from the motor portion 27 a to the plunger 39. It is connected to the end of the pump body 33 having an input section.
  • the entire motor unit 27 a is arranged along the downward direction, and is arranged in a different vertical direction from the plunger pump unit 35. With this layout, the entire pump part 27 a is arranged in a substantially L shape along the circumferential direction of the outer peripheral part of the intake pipe member 25, and the position of the center of gravity of the motor part 27 a is brought close to the intake pipe member 25. Note that the motor portion 27 a is closest to the outer peripheral portion of the short tube member 15.
  • the suction connection port body 29 and the return connection port body 31 are end portions of the plunger type pump unit 35 (pump unit 25) opposite to the motor unit 27a. It is formed integrally with the end surface of (lid portion 33b) and protrudes forward from the end surface. Of these, the suction connection port body 29 communicates with the suction valve 57.
  • a fuel supply hose member 85 (only a part of which is shown by a two-dot chain line) extending from the lower part of the fuel tank 11 is connected to the suction connection port body 29 with a stopper 86 such as a hose band (two in FIG. 4). Connected by a dotted line).
  • a stopper 86 such as a hose band (two in FIG. 4).
  • the return connection port body 31 communicates with the discharge valve 59.
  • a return hose member 87 (only part of which is shown by a two-dot chain line) extending from the fuel tank 11 is connected to the return connection port 31 by a stopper 88 such as a hose band.
  • the fuel supply device 21 When the fuel supply device 21 configured as described above is installed in a motorcycle (FIGS. 1 and 2), the fuel supply device 21 exhibits considerable vibration resistance by itself only with the layout of each part. That is, as shown in FIGS. 1 and 2, the weight of the plunger-type pump unit 35 (pump unit 25) is distributed to the left and right sides around the short pipe member 15 that intersects with the pump unit 35. In a state where the fuel supply device 21 is installed in the motorcycle, the motor portion 27a is disposed on one end side of the plunger-type pump portion 35 (pump portion 25), so that the weight balance seems to deteriorate.
  • the weight of the suction connection port body 29 and the return connection port body 31 is added to the other end portion of the plunger-type pump unit 35 (pump unit 25), and the plunger connection unit 29 is connected to the connection port bodies 29 and 31.
  • the weights of the hose members 85 and 87 (down from the fuel tank 11) and stoppers 86 and 88 for stopping the hose members 85 and 87 are added. Therefore, it becomes easy to balance in weight with the opposite one end side where the heavy motor part 27a is arranged. This is because the position of the plunger type pump part 35 (pump part 25) intersecting with the short pipe member 15 is determined at a point where a weight balance is easily obtained. Due to this weight balance, the swing of the plunger type pump part 35 and the motor part 27 a can be suppressed only by restraint by the hose members 85 and 87 extending from the fuel tank 11.
  • the fuel supply device 21 has a simple structure in which the plunger pump 35 (pump unit 25), the motor unit 27a (drive unit 27), the suction connection port body 29, and the return connection port body 31 are arranged in a balanced manner.
  • the vibration resistance against vibrations and impacts transmitted from the short tube member 15 can be improved under the condition of being mounted on a motorcycle.
  • Securing the vibration resistance is effective for the fuel supply device 21 configured using the cylindrical plunger pump unit 35 and the heavy motor unit 27a, which makes it difficult to ensure the weight balance.
  • the cylindrical plunger type pump unit 35 is disposed sideways, so that the position of the center of gravity is lowered, and the plunger type pump unit 35 as a whole is difficult to shake (relative to the vertical direction).
  • the vibration resistance of the entire 21 can be further increased.
  • the motor portion 27a is arranged in an approximately L shape along the circumferential direction of the short tube member 15, so that the position of the center of gravity of the motor portion 27a also approaches the short tube member 15 and the rotational moment about the short tube member 15 is obtained. Therefore, it is difficult for the fuel supply device 21 to shake, and the vibration resistance can be further improved.
  • the fuel supply device 21 has the weight of the pressure regulator 61 as well as the plunger. Since it is added to the other end of the pump section 35 (pump section 25), it becomes easier to balance the weight with the opposite side (motor section 27a). That is, the fuel supply device 21 as a whole becomes more difficult to shake by using the pressure regulator 61, and the vibration resistance is improved.
  • the fuel supply device 21 has a plunger type centered on the short pipe member 15 when the plunger type pump part 35 and the motor part 27a are arranged at points closest to the outer peripheral part of the short pipe member 15, respectively. Since the rotational moment generated in the pump part 35 and the motor part 27a is suppressed, the fuel supply device 21 becomes more difficult to shake and the vibration resistance is improved.
  • the plunger-type pump unit 35 and the motor unit 27 a are arranged on a circular locus closest to the outer peripheral portion of the short tube member 15 centering on the axis of the short tube member 15.
  • the vibration of each part of the fuel supply device 21 around the short tube member 15 is effectively suppressed, and the vibration resistance is effectively enhanced.
  • the fuel supply device 21 when the diaphragm pump unit 37 is provided in the fuel supply device 21, the insufficient suction function of the plunger pump unit 35 is enhanced, so that the fuel supply device 21 is located at a position considerably higher than the fuel supply device 21.
  • the fuel supply device 21 as shown in FIG. 1 can reliably supply fuel even in a vehicle that is substantially at the same height as the lower portion of the fuel tank 11. Regardless of the mounting position, the fuel in the fuel tank 11 can be properly supplied to the injector 19. That is, the fuel supply device 21 having high vibration resistance and high wearability can be provided.
  • the fuel supply device 21 is fixed by using the injector 19 assembled to the plunger type pump unit 35 and simply using the support unit 91 as a plunger type pump.
  • a simple structure is sufficient in which the portion 35 and the motor portion 27a are stopped by the short pipe member 15.
  • the injector 19 has an intermediate portion (intersection portion) of the plunger-type pump portion 35 that intersects the intake pipe portion 15, that is, one end side and the other end portion of the plunger-type pump portion 35. It is disposed at an intermediate portion where the side is substantially balanced in weight, and is attached in an oblique direction by connecting the tip injection portion 19a to the intake pipe portion 15 in communication.
  • a connecting port 33c (only a part of which is shown in FIGS. 2 and 3) is provided in the middle part (axial direction) of the pump body 33 so that the base of the injector 19 can be inserted and removed.
  • the wall portion of the short tube member 15 is provided with a tip support portion 15a (only part of which is shown in FIGS. 2 and 3) into which the injection portion 19a of the injector 19 is removably fitted.
  • the support portion 91 includes a stop portion 93 that connects portions where the plunger-type pump portion 35 and the short tube member 15 on the opposite side of the injector 19 intersect, and a plunger-type pump portion.
  • the anti-sway part 97 is configured to suppress the shake of the motor part 27a with the shaft center of 35 as a fulcrum.
  • the stop portion 93 is provided with, for example, a plate-like bracket portion 95 protruding from the outer peripheral portion of the intermediate portion of the pump main body 33, a base-like mounting seat 98 provided on the outer peripheral portion of the short tube member 15, and a bolt The bracket portion 95 is fastened to the mounting seat 98 by screwing the member 99.
  • the steadying portion 97 is provided with, for example, a pin portion 101 in parallel with the side portion of the motor portion 27 a adjacent to the short tube member 15, and the pin portion 101 is provided on the outer peripheral portion of the short tube member 15.
  • a structure is used in which a pin receiving seat 103 is provided, and the pin portion 101 is inserted into a pin hole 103 a formed in the pin receiving seat 103 when the plunger pump portion 35 is attached.
  • the directions of the bracket portion 95, the screw hole 98a of the mounting seat 98, the pin portion 101, and the pin hole 103a are all set to the same oblique direction as the assembly direction (oblique direction) of the injector 19.
  • the entire fuel supply device 21 is restrained by “installation of the injector 19 in the horizontal movement of the plunger-type pump part 35” and “fixed in the vertical movement of the plunger-type pump part 35 by bolting (retaining prevention). )
  • the pin portion 101 can be firmly fixed with a simple structure in which the number of fixing points,“ suppression of vibration (front-rear direction) of the motor portion 27a with the plunger pump portion 27a as a fulcrum ”, is suppressed to a minimum number.
  • the present invention is not limited to one embodiment, and various modifications may be made without departing from the spirit of the present invention.
  • the example in which the fuel supply device is provided in the short pipe member (the intake pipe member that constitutes a part of the intake pipe) separate from the throttle valve device has been described.
  • a fuel supply device may be provided in the valve body (intake pipe member constituting a part of the intake pipe) of the valve device, and even in this case, the same effect as in the embodiment can be obtained.

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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)
  • Jet Pumps And Other Pumps (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Ce dispositif d'alimentation en carburant est configuré par une unité de support d'une pompe (35) de manière à croiser la direction centrale axiale d'un élément de tuyau d'admission (15) sur la section circonférentielle externe de l'élément de tuyau d'admission configurant une partie d'un tuyau d'admission ; la fourniture d'une unité d'entraînement (27a) sur une section d'extrémité de l'unité de pompe coupant l'élément de tuyau d'admission et la fourniture d'un port de connexion d'admission (29) et d'un port de connexion de retour (31) sur l'autre section d'extrémité.
PCT/JP2013/050445 2012-01-19 2013-01-11 Dispositif d'alimentation en carburant pour moteur à combustion interne WO2013108720A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201380006062.7A CN104066970B (zh) 2012-01-19 2013-01-11 内燃机的燃料供给装置
BR112014017402A BR112014017402A8 (pt) 2012-01-19 2013-01-11 dispositivo de fornecimento de combustível para motor de combustão interna
IN5757DEN2014 IN2014DN05757A (fr) 2012-01-19 2013-01-11
PH12014501644A PH12014501644A1 (en) 2012-01-19 2014-07-17 Fuel supply device for internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012008888A JP5968628B2 (ja) 2012-01-19 2012-01-19 内燃機関の燃料供給装置
JP2012-008888 2012-01-19

Publications (1)

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WO2013108720A1 true WO2013108720A1 (fr) 2013-07-25

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PCT/JP2013/050445 WO2013108720A1 (fr) 2012-01-19 2013-01-11 Dispositif d'alimentation en carburant pour moteur à combustion interne

Country Status (7)

Country Link
JP (1) JP5968628B2 (fr)
CN (1) CN104066970B (fr)
BR (1) BR112014017402A8 (fr)
IN (1) IN2014DN05757A (fr)
MY (1) MY168062A (fr)
PH (1) PH12014501644A1 (fr)
WO (1) WO2013108720A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117680A (ja) * 1989-09-30 1991-05-20 Yamaha Motor Co Ltd ２サイクルエンジンの燃料供給装置
JPH0454974U (fr) * 1990-09-20 1992-05-12
JP2003254187A (ja) * 2002-02-28 2003-09-10 Honda Motor Co Ltd 車両の燃料ポンプモジュール
JP2005105987A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd 内燃機関の燃料噴射装置
JP2005133672A (ja) * 2003-10-31 2005-05-26 Keihin Corp 車両の燃料供給装置
JP2011012649A (ja) * 2009-07-06 2011-01-20 Aisan Industry Co Ltd 燃料噴射装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971371B2 (en) * 2003-09-30 2005-12-06 Honda Motor Co., Ltd. Air-fuel mixing and delivery apparatus for an internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117680A (ja) * 1989-09-30 1991-05-20 Yamaha Motor Co Ltd ２サイクルエンジンの燃料供給装置
JPH0454974U (fr) * 1990-09-20 1992-05-12
JP2003254187A (ja) * 2002-02-28 2003-09-10 Honda Motor Co Ltd 車両の燃料ポンプモジュール
JP2005105987A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd 内燃機関の燃料噴射装置
JP2005133672A (ja) * 2003-10-31 2005-05-26 Keihin Corp 車両の燃料供給装置
JP2011012649A (ja) * 2009-07-06 2011-01-20 Aisan Industry Co Ltd 燃料噴射装置

Also Published As

Publication number Publication date
JP5968628B2 (ja) 2016-08-10
MY168062A (en) 2018-10-11
PH12014501644B1 (en) 2014-10-13
BR112014017402A8 (pt) 2017-07-04
CN104066970B (zh) 2016-08-24
IN2014DN05757A (fr) 2015-04-10
BR112014017402A2 (pt) 2017-06-13
JP2013148002A (ja) 2013-08-01
CN104066970A (zh) 2014-09-24
PH12014501644A1 (en) 2014-10-13

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