WO2005045236A1 - 燃料供給装置、車両、及び燃料供給装置の組立方法 - Google Patents
燃料供給装置、車両、及び燃料供給装置の組立方法 Download PDFInfo
- Publication number
- WO2005045236A1 WO2005045236A1 PCT/JP2004/016301 JP2004016301W WO2005045236A1 WO 2005045236 A1 WO2005045236 A1 WO 2005045236A1 JP 2004016301 W JP2004016301 W JP 2004016301W WO 2005045236 A1 WO2005045236 A1 WO 2005045236A1
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- Prior art keywords
- injector
- fuel supply
- chamber
- case
- fuel
- Prior art date
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Classifications
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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
- 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
- F02M69/043—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit upstream of an air throttle valve
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10026—Plenum chambers
- F02M35/10039—Intake ducts situated partly within or on the plenum chamber housing
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10026—Plenum chambers
- F02M35/10052—Plenum chambers special shapes or arrangements of plenum chambers; Constructional details
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10072—Intake runners
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10177—Engines having multiple fuel injectors or carburettors per cylinder
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
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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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
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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
- 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
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
Definitions
- the present invention relates to a fuel supply device for supplying fuel to an engine, a vehicle including the same, and a method of assembling the fuel supply device.
- a fuel supply device for supplying fuel to an engine there is a fuel supply device in which a fuel injector is disposed upstream of an opening of an intake pipe in an intake box (for example, see Patent Document 1).
- the fuel injector is arranged substantially parallel to the axis of the intake pipe.
- Patent Document 1 Japanese Patent Application Laid-Open No. 10-196494
- Patent Document 2 Japanese Patent Application Laid-Open No. 7-247924
- the fuel injector is disposed outside the air chamber, so that the connection between the fuel injector and the air chamber is made waterproof. Careful attention was required. That is, the above-mentioned fuel supply device connects the fuel injector to the external force of the air chamber. Therefore, it was necessary to provide a highly waterproof seal mechanism at the connection part of the fuel injector to prevent water from entering the outside force inside the air chamber. Also, only the fuel injector for the air chamber However, it was necessary to assemble the sealing mechanism with high accuracy.
- the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a fuel supply device for injecting fuel upstream of an opening of an intake passage. It is to improve the waterproofness while suppressing the resistance.
- a fuel supply device has an intake chamber having an introduction portion for introducing air, and an opening that opens to the intake chamber, and guides air in the intake chamber from the opening to the engine. And a partition member forming a separate chamber inside the suction chamber, an injector body and a nozzle, at least the injector body is housed in the separate chamber, and the introduction section in the suction chamber is provided. And an injector for injecting fuel between the opening and the opening.
- Another fuel supply device includes an intake chamber having an introduction portion for introducing air, and an opening opening to the intake chamber, and the engine supplies the air from the opening to the engine in the intake chamber.
- the method for assembling a fuel supply device includes a first case, a second case which is combined with the first case to partition an intake chamber together with the first case,
- An intake chamber box having an opening, an opening that opens to the intake chamber, an intake passage that guides air in the intake chamber from the opening to the engine, and a section that forms another chamber inside the intake chamber.
- An injector having a member, an injector body, and a nozzle, at least the injector body being housed in the separate chamber, and injecting fuel between the introduction section and the opening in the intake chamber.
- a method of assembling a fuel supply device comprising: disposing the injector between an inner surface of the first case and the partition member, or disposing the injector inside the partition member.
- the partition is provided on the inner surface of the first case.
- a step of attaching take the steps of assembling said said first case the partition member is attached second Ke Ichisu, the method comprising.
- FIG. 1 is a side view of a motorcycle according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the fuel supply device according to the first embodiment of the present invention.
- FIG. 3 is a plan view of the fuel supply device according to the first embodiment.
- FIG. 4 is a cross-sectional view of an air funnel.
- FIG. 5 is a sectional view of a fuel supply device according to a second embodiment of the present invention.
- FIG. 6 is a sectional view taken along line VI-VI of FIG. 5.
- FIG. 7 is an exploded perspective view of the fuel supply device.
- FIG. 8 is a cross-sectional view of a fuel supply device according to a third embodiment of the present invention, which is a cross-sectional view taken along line VIII-VIII of FIG.
- FIG. 9 is a plan view of a fuel supply device according to a third embodiment.
- FIG. 10 is a sectional view taken along line XX of FIG. 9.
- FIG. 11 is a sectional view taken along line XI-XI in FIG. 9.
- Air cleaner case (intake chamber box)
- FIG. 1 is a side view showing an example of a vehicle according to an embodiment of the present invention.
- the vehicle according to the present embodiment is a motorcycle 100 (including a motorbike, a starter, and the like).
- the motorcycle 100 includes an intake 81 for taking in air, an air cleaner 10, an engine 21, and a muffler 84.
- the engine 21 in the present embodiment is a water-cooled 4-cycle parallel 4-cylinder engine.
- the intake 81 and the air cleaner 10 are connected via an intake duct 82.
- the air cleaner 10 and the combustion chamber 2c of the engine 21 (not shown in FIG. 1; see FIG. 2) are connected via an intake passage 90.
- the combustion chamber 2c and the muffler 84 are connected via an exhaust passage 83.
- An upstream fuel injector 14 is disposed inside the air cleaner 10, and a downstream fuel injector 13 is disposed in the intake passage 90.
- the air taken in from the intake 81 is guided to the air cleaner 10 through the intake duct 82. Then, the air purified by the air cleaner 10 and the fuel injected from the fuel injectors 14 are sucked into the intake passage 90. In the intake passage 90, fuel is further injected from the fuel injector 13. Then, the air and fuel in the intake passage 90 are supplied to the combustion chamber 2c during the intake stroke of the engine 21.
- upstream in the airflow direction of the air supplied from the intake 81 to the combustion chamber 2c of the engine 21 through the air cleaner 10 and the intake passage 90 will be simply referred to as “upstream”.
- downstream is simply referred to as downstream.
- a part of the combustion chamber 2c is formed in the cylinder head 2 of the engine 21.
- a recess is formed.
- the engine 21 is attached to the vehicle body frame in a forwardly inclined state or a standing state, and the cylinder bore axis B of the engine 21 forms an angle of 0 to 50 degrees with respect to the vertical line V.
- the intake valve opening 2d and the exhaust valve opening that open to the combustion chamber 2c are opened and closed by the intake valve and the exhaust valve, respectively. Although not shown, these intake valves and exhaust valves are driven to open and close by intake camshafts and exhaust camshafts, respectively.
- the intake valve opening 2d is formed at a downstream end of the intake port 2e, and an external connection port 2f is formed at an upstream end of the intake port 2e.
- a cylindrical throttle body 7 is connected to the external connection port 2f via a cylindrical joint member 6.
- an air funnel 8 is connected to the upstream end of the throttle body 7.
- the air funnel 8, the throttle body 7, the joint member 6, and the intake port 2e form an intake passage 90 having a linear center line A.
- the center line A makes an angle of 20 to 50 degrees with respect to the cylinder bore axis B.
- the joint member 6 is a cylindrical member made of heat-resistant rubber, and a lower end flange portion (not shown) of the joint member 6 is fixed to a peripheral edge of the external connection port 2f of the cylinder head 2 by bolting. .
- the downstream opening of the throttle body 7 is inserted into the upper end connection port of the joint member 6, and the joint member 6 and the throttle body 7 are fixedly fastened by a fixing band 6b.
- the throttle body 7 has a cylindrical shape, and a throttle valve 9 is disposed at an intermediate portion in the longitudinal direction.
- the throttle valve 9 includes a valve shaft 9a penetrating the throttle body 7 in a direction parallel to the camshaft (hereinafter, referred to as a camshaft direction), and a valve plate 9b fixed to the valve shaft 9a.
- the valve shaft 9a is connected to a valve shaft of an adjacent throttle valve by a connector.
- a throttle pulley is mounted on this connector, and the throttle pulley is connected to a throttle grip of a steering wheel via a throttle cable.
- the air funnel 8 is connected to the throttle body 7 via a joint member.
- the air funnel 8 opens into the air cleaner 10.
- the air cleaner 10 includes a box-shaped air cleaner case 11 extending in the vehicle width direction (cam shaft direction). Air Tally An intake chamber is formed inside the na case 11, and an element 12 is provided.
- the air cleaner case 11 is of a two-part upper and lower type that acts as a lower case 11a and an upper case lib.
- Flanges l le and 1 If are formed on the periphery of the divided surface of the lower case l la and the upper case l ib, respectively. Is fixed.
- the lower case 11a is divided into a front part (the right part in FIG. 2) and a rear part (the left part in FIG. 2).
- the front part of the lower case 11a swells greatly downward, and an air inlet 1lc 'is formed in the side wall of the bulge lli!
- the rear part of the lower case 1 la has an outlet lid bulging downward.
- Four sets of air channels 8 for each cylinder are mounted on the bottom surface of the outlet lid. Each air funnel 8 fits into a connection port of the throttle body 7 of each cylinder when the air cleaner 10 is disposed at a predetermined position.
- the upper case l ib has a substantially arc shape when viewed in a cross section extending to the front partial force rear wall l lg. Since the upper case lib has such an arc shape, a required volume is secured on the secondary side of the element 12 (downstream from the element 12).
- Air inlet 11 force The main flow of the sucked air changes its flow direction so that its center line M forms an arc shape as shown in FIG. 2, and is guided to the air funnel 8.
- a downstream fuel injector 13 is provided for each cylinder downstream of the throttle valve 9 of each throttle body 7, and an upstream fuel injector 14 is provided for each cylinder upstream. ing.
- a boss portion for supporting the fuel injector 13 is formed on a rear wall of the throttle body 7, that is, a wall located on the opposite side of the cylinder axis B with respect to the intake passage center line A.
- Each fuel injector 13 is fixed while being inserted into the boss.
- a fuel introduction section 13b is provided at the upper end of each fuel injector 13, and each fuel introduction section 13b is connected to a nove 17a branched from a fuel supply pipe 17.
- the fuel supply pipe 17 extends in the cam axis direction, and is common to the fuel injectors 13.
- Reference numeral 13c indicates the noise of the fuel injector 13.
- the throttle body 7 includes a diaphragm type buffer valve 19 on the upstream side of the throttle valve 9.
- the buffer valve 19 includes a piston valve 1 for increasing or decreasing the intake passage area. 9a is biased to the closed side. Further, the piston valve 19a is connected to the diaphragm 19b, and is configured to introduce a negative pressure of the intake passage 90 into the diaphragm chamber 19c.
- the fuel injector 14 on the upstream side is arranged inside the air cleaner case 11 and inside the center line M of the mainstream (the center side of the arc shape).
- Each fuel injector 14 is supported by a cylindrical support bracket 1 '.
- the support bracket 1 ′ has a vertical wall 15 a extending along the longitudinal direction of the fuel injector 14.
- the vertical wall 15a has a function of guiding the airflow M to the air funnel 8.
- the support bracket 1 ′ penetrates the left and right side walls of the air cleaner case 11 (see FIG. 3).
- the penetrating portion is sandwiched between flange portions of the lower case 11a and the upper case lib, and is sealed so that outside air does not enter the air cleaner.
- the fuel injector 14 has an injection nozzle 14c and an injector body (a part other than the nozzle 14c).
- the injector body is fixed while being inserted into the boss 15d of the support bracket 15 '' ', and the injection nozzle 14c also protrudes downward with the support bracket 1' force.
- the support bracket W ′ forms a separate chamber 68 defined in the air cleaner 10 from an intake chamber.
- the injector main body of the fuel injector 14 is housed inside the separate chamber 68.
- a common fuel supply pipe 16 is connected to the upper end of each fuel injector 14.
- Each fuel injector 14 is connected to a nove 16 a branched from a fuel supply pipe 16 in a separate chamber 68. As shown in FIG. 3, an end of the fuel supply pipe 16 projects outside the air cleaner case 11, and the projection is connected to a fuel supply pump (not shown).
- each fuel injector 14 is connected to a power supply harness 14e in a separate chamber 68.
- the four sets of power supply harnesses 14e penetrate through the vacuum cleaner case 11 in a bundled state and are led out.
- a connection connector is provided at the leading end.
- the four fuel injectors 14 are connected to the fuel supply pipe 16 and the power supply harness. Attached to the support bracket W 'together with the nest 14e, it is integrated as an injector unit.
- the injector unit is disposed in the air cleaner 10 (specifically, in the separate room 68 partitioned by the support bracket ').
- the joint of the fuel supply pipe 16 and the connector connected to the edge of the harness 14e are connected to an external circuit outside the air cleaner 10.
- the air funnel 8 has a tapered shape in which the suction side has a slightly larger diameter, and the tip of the air funnel 8 is formed by a bellmouth.
- the bell mouth has a peeling layer inducing portion 8a formed by bending the periphery of the suction port 8b (see FIG. 4) outward in an arc shape.
- the peeling layer inducing section 8a is configured to positively form a peeling layer a of the airflow sucked into the throttle body 7 through the air funnel 8 on the inner surface of the air funnel 8. .
- the radius of curvature r in the airflow direction is 0.33-0. It has an arc-shaped curved surface of about 01 XD.
- the radius of curvature r is 0.33 XD
- the flow coefficient is about 0.99.
- the separation layer a is formed at the opening of the air funnel 8 while applying force, the fuel flowing backward through the intake passage 90 on the pulsating wave in the intake passage 90 is captured by the separation layer a. be able to.
- the return of the fuel is prevented by effectively utilizing the boundary layer separation at the open end of the funnel.
- the above-mentioned radius of curvature r is employed.
- fuel is blown back by forming the separation layer a at the open end of the air funnel 8 while suppressing the intake resistance by providing the air funnel 8 at the upstream end of the intake passage 90. Has been prevented.
- the fuel injector 14 is arranged so as to inject the fuel from the separation layer a toward the center of the intake passage.
- the fuel supply device is assembled as follows. That is, first, each fuel injector 14 is attached to the support bracket W '. And each fuel injection The projectile 14 is connected with a branch pipe 16a of a fuel supply pipe 16 and a power supply hose 14e. Next, the support bracket W 'is attached to the upper case lib. Then, the upper case lib to which the support bracket 15 is attached is attached to the lower case 11a.
- the separate chamber 68 is partitioned by the support bracket 1 ′ inside the air cleaner 10, and the injector main body of the fuel injector 14 is accommodated in the separate chamber 68. Therefore, the injector body is not exposed to the airflow M in the air cleaner 10. Therefore, the air resistance due to the injector 14 can be suppressed.
- the injector 14 since the injector 14 is housed inside the air cleaner 10, the waterproofness of the air cleaner 10 can be improved. As described above, according to the present fuel supply device, reduction of air resistance and improvement of waterproofness are achieved despite the fact that the fuel injector 14 is disposed upstream of the opening of the intake passage 90. Can be compatible.
- the support bracket (the fuel injector 14) is arranged inside the center line M of the main flow of air in an arc shape. Therefore, from the viewpoint of the arrangement position, it is possible to suppress the fuel injector 14 from becoming a resistance to the flow of air. Therefore, it is possible to prevent the air resistance of the fuel injector 14 from becoming a hindrance to improving the engine output.
- a single support bracket 15 ′ ′′ forms a common separate chamber 68 for accommodating a plurality of fuel injectors 14. Therefore, the number of parts can be reduced as compared with the case where the separate chambers 68 are individually formed for the respective fuel injectors 14.
- the support bracket 1 ′ supporting the fuel injector 14 is attached to the upper case l ib, and then the upper case l ib is assembled to the lower case 11 a, the fuel injector 14 is attached to the air cleaner 10. Despite the arrangement inside, the fuel supply device can be assembled relatively easily.
- the fuel injector 14 and the fuel supply pipe 16, and the fuel injector 14 and the power supply harness are all connected in the separate chamber 68 in the support bracket 15 ⁇ '. Have been. Therefore, they may be connected when the support bracket 1 ′ is attached to the upper case lib.
- the upper case l ib Before assembling with the lower case 11a, they can be connected.
- the fuel injector 14 does not project outside the air cleaner case 11. Therefore, the appearance of the fuel supply device can be improved.
- FIG. 5 to FIG. 7 are diagrams for explaining a fuel supply device according to the second embodiment.
- the cylinder head 2 is mounted on the upper mating surface la of the cylinder body 1 of the engine 21. Cylinder head 2 and cylinder body 1 are fastened by head bolts (not shown).
- a head cover 3 is mounted on the upper mating surface 2a of the cylinder head 2.
- a concave portion forming a part of the combustion chamber 2c is formed in the lower joint surface 2b of the cylinder head 2.
- An intake valve opening 2d and an exhaust valve opening (not shown) opened in the combustion chamber 2c are opened and closed by an intake valve 4a and an exhaust valve 4b, respectively.
- the intake valve 4a and the exhaust valve 4b are opened and closed by an intake cam shaft 5a and an exhaust cam shaft 5b, respectively.
- the lower case 1 la has a front portion (the left portion in FIG. 5) and a rear portion.
- the element 12 is in the form of a thick plate that covers the air inlet 11c of the lower case 11a, and is sandwiched between both flanges lie, 1If.
- the upper case l ib has a substantially arc shape when viewed in cross section. The main flow of the air sucked in from the air inlet 11c changes the flow direction so that the center line M forms an arc shape, and is guided to the air funnel 8.
- a boss 7c is formed on a rear wall of the throttle body 7, that is, a wall located on the opposite side of the cylinder axis B with respect to the intake passage center line A.
- Each fuel injector 13 is fixed while being inserted into the boss 7c.
- the tip of the injection nozzle 13c of the fuel injector 13 is located near the inner surface of the throttle body 7.
- the injection axis 13a of the fuel injector 13 intersects with the intake passage axis A near the inlet of the intake port 2e. Of the top wall ing.
- Each fuel injector 14 is supported by a rear wall l lg of the upper case l ib of the air cleaner 10 via a common support bracket 15.
- the support bracket 15 has a substantially L-shaped cross section having a vertical wall 15a and a horizontal wall 15b.
- the vertical wall 15a also functions as a guide plate for directing the main flow M of the air flowing in the air cleaner 10 to the air funnel 8.
- the right and left ends of the vertical wall 15a and the horizontal wall 15b are connected by a substantially triangular end wall 15c (see FIG. 6).
- a substantially triangular prism-shaped separate room 68 is defined between the support bracket 15 and the rear wall llg.
- a flange 15f is formed on the periphery of the vertical wall 15a, the horizontal wall 15b, and the end wall 15c, and the flange 15f is detachably fixed to the rear wall lg by bolting. Note that a seal member 15e is interposed between the flange portion 15f and the rear wall lg.
- a tubular boss 15d bulging downward is formed on the lateral wall 15b.
- Each fuel injector 14 is fixed while being inserted into the boss 15d, and the injection nozzle 14c projects downward from the boss 15d.
- a fuel introduction part 14b is provided, and the fuel introduction part 14b is inserted and connected into a pipe 16a branched from one common fuel supply pipe 16.
- both ends of the fuel supply pipe 16 penetrate through the rear wall l lg of the upper case l ib and protrude rearward (in the direction opposite to the paper surface of FIG. 6).
- the joints 16b and 16c connected to the fuel pipes on the fuel supply side and the fuel return side are provided on the one side protruding part.
- each fuel injector 14 is connected to a power supply harness 14e.
- the four sets of power supply harnesses 14e are led out through the through holes l lj (see FIG. 7) of the rear wall llg in a bundled state.
- a connection connector (not shown) is provided at the leading end.
- the four fuel injectors 14 are attached to the support bracket 15 together with the fuel supply pipe 16 and the power supply harness 14e, and are integrally formed as an injector unit.
- the injector unit is disposed inside the air cleaner 10, particularly in a separate room 68 defined by the support bracket 15 and the upper case lib.
- each of the fuel injectors 14 is disposed outside the center line M of the main flow of the arc-shaped air (the side opposite to the center of the arc).
- the injection axis 14a of each fuel injector 14 intersects the center line A of the intake passage 90 and thus the center line M of the main flow at the valve shaft 9a of the throttle valve 9. .
- the injection axis 14a faces the rear surface (the right surface in FIG. 6) of the valve plate 9b (shown by a two-dot chain line in FIG. 5) at the fully open position.
- the fuel supply device is assembled as follows. That is, first, each fuel injector 14 is attached to the support bracket 15. Then, a branch pipe 16a of the fuel supply pipe 16 and a power supply hose 14e are connected to each fuel injector 14. Next, the support bracket 15 is attached to the inner surface of the rear wall llg of the upper case lib. Thus, the fuel injector 14 is attached to the upper case lib from inside. Then, the upper case lib to which the support bracket 15 is attached is attached to the lower case 11a.
- the separate chamber 68 is formed by the support bracket 15 inside the air cleaner 10, and the fuel injector 14 is housed in the separate chamber 68. Therefore, similarly to the first embodiment, it is possible to reduce air resistance and improve waterproofness.
- the support bracket 15 (the fuel injector 14) is arranged outside the center line M of the mainstream of the air having an arc shape. Therefore, similarly to the first embodiment, it is possible to prevent the support bracket 15 (the fuel injector 14) from becoming a resistance to the flow of air from the viewpoint of the arrangement position.
- the fuel injector 14, the fuel supply pipe 16, and the power supply harness 14e are attached to the support bracket 15 to be integrated as an injector unit. Then, this injector unit was disposed in the air cleaner 10 (particularly in the separate room 68), and was fixed to the air cleaner case 11 by bolts so as to be detachable. Therefore, despite the provision of the plurality of fuel injectors 14, the work of mounting the fuel injectors 14, the fuel supply pipe 16, and the like can be facilitated. In addition, the entire injector unit is located in the air cleaner case 11, and particularly, the fuel injector 14 does not protrude outward. Therefore, it is possible to avoid such a problem that the fuel injector 14 is damaged by interference with other in-vehicle components.
- both ends of the fuel supply pipe 16 are projected outside the air cleaner case 11, and joints 16b and 16c are provided at the projected portions.
- a connector connected to the edge of the power supply harness 14e is arranged outside the air cleaner case 11. Therefore, the connection and disconnection of the fuel circuit and the electric circuit can be easily performed despite the arrangement of the injector unit in the air cleaner 10.
- a separate chamber 68 is defined by the support bracket 15 in the intake chamber in the air cleaner 10.
- the fuel injector 14 is housed in a separate room 68.
- the injection nozzle 14c that is connected only by the injector body is also housed in the separate chamber 68. That is, although the nozzle opening end is open to the intake chamber, the injection nozzle 14c is substantially housed in the separate chamber 68.
- the air cleaner case 11 serves as a lower case 11a and an upper case 11b, and the flanges ⁇ i le, 1 If of these cases 11a, l ib are formed by the Bonoleto 65 and the nut 66. It is detachably connected.
- the support bracket 15 and the upper case l ib are fixed by bolts 67 inserted outside the upper case l ib. Note that these fixing devices such as the bolts 67 are merely examples, and it is of course possible to fix them using other fixing devices such as screws.
- a pipe 16a branched from the fuel supply pipe 16 is connected to the upper end of each fuel injector 14.
- the rear wall llg of the upper case lib has a through hole 75 formed therein.
- a waterproof seal member 73 is fitted into the through hole 75, and the fuel supply pipe 16 penetrates the seal member 73.
- the fuel supply pipe 16 is disposed between the inside of the air cleaner 10 (strictly, the inside of the separate chamber 68) and the outside through the through hole 75.
- each fuel injector 14 is connected to a power supply hose 14e in a separate chamber 68. As shown in FIGS.
- the rear wall llg of the upper case lib has a through hole 76 formed therein, and the waterproof seal member 74 is fitted into the through hole 76 as well.
- the four sets of power supply harnesses 14e are bundled to form a group of harnesses 70 that penetrate the seal member 74.
- the harness 70 is provided so as to extend between the inside and the outside of the air cleaner 10 through the through hole 76.
- a connector 71 is provided at an end of the housing 70 outside the air cleaner 10.
- the fuel supply device according to the present embodiment can be assembled in the same manner as the fuel supply device according to the second embodiment.
- the present invention is useful for an engine fuel supply device and a vehicle including the same.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04799485A EP1681459B1 (en) | 2003-11-07 | 2004-11-04 | Fuel supply device, vehicle, and fuel supply device assembling method |
DE602004032162T DE602004032162D1 (de) | 2003-11-07 | 2004-11-04 | Kraftstoffzufuhrvorrichtung, fahrzeug und kraftstoffzufuhrvorrichtungsmontageverfahren |
JP2005515296A JP4353434B2 (ja) | 2003-11-07 | 2004-11-04 | 燃料供給装置、車両、及び燃料供給装置の組立方法 |
AT04799485T ATE504737T1 (de) | 2003-11-07 | 2004-11-04 | Kraftstoffzufuhrvorrichtung, fahrzeug und kraftstoffzufuhrvorrichtungsmontageverfahren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-378583 | 2003-11-07 | ||
JP2003378583 | 2003-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005045236A1 true WO2005045236A1 (ja) | 2005-05-19 |
Family
ID=34567183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/016301 WO2005045236A1 (ja) | 2003-11-07 | 2004-11-04 | 燃料供給装置、車両、及び燃料供給装置の組立方法 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1681459B1 (ja) |
JP (1) | JP4353434B2 (ja) |
AT (1) | ATE504737T1 (ja) |
DE (1) | DE602004032162D1 (ja) |
TW (1) | TWI271473B (ja) |
WO (1) | WO2005045236A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014034952A (ja) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | 鞍乗型車両の吸気構造 |
JP2014077435A (ja) * | 2012-09-24 | 2014-05-01 | Honda Motor Co Ltd | 直噴インジェクタユニットの組付方法及び組付装置 |
WO2014185091A1 (ja) * | 2013-05-17 | 2014-11-20 | 川崎重工業株式会社 | 鞍乗型車両の吸気チャンバ |
JP2015132227A (ja) * | 2014-01-15 | 2015-07-23 | スズキ株式会社 | インジェクタ取付構造 |
US10724482B2 (en) | 2018-02-05 | 2020-07-28 | Honda Motor Co., Ltd. | Air cleaner connecting tube structure |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4865603B2 (ja) * | 2007-03-07 | 2012-02-01 | 本田技研工業株式会社 | インシュレータ構造 |
JP6089405B2 (ja) * | 2012-01-23 | 2017-03-08 | スズキ株式会社 | 内燃機関の燃料供給装置 |
CN109891080B (zh) * | 2016-09-30 | 2021-06-04 | Tvs电机股份有限公司 | 用于两轮车辆的进气系统 |
WO2021191920A1 (en) * | 2020-03-26 | 2021-09-30 | Tvs Motor Company Limited | A power unit and an intake member thereof |
Citations (6)
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JPS5835266A (ja) * | 1981-08-26 | 1983-03-01 | Mitsubishi Electric Corp | 燃料噴射弁の支持構造 |
JPS6357370U (ja) * | 1986-10-01 | 1988-04-16 | ||
JPH07247924A (ja) | 1994-03-10 | 1995-09-26 | Keihin Seiki Mfg Co Ltd | 燃料噴射装置 |
JPH10196494A (ja) | 1997-01-14 | 1998-07-28 | Honda Motor Co Ltd | 燃料噴射装置 |
JPH10205410A (ja) * | 1997-01-20 | 1998-08-04 | Toyota Motor Corp | 内燃機関の燃料噴射装置 |
JP2000097131A (ja) * | 1998-09-22 | 2000-04-04 | Yamaha Motor Co Ltd | 燃料噴射弁の配置構造 |
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JPH01300061A (ja) * | 1988-05-27 | 1989-12-04 | Hitachi Ltd | 燃料噴射装置 |
US5261375A (en) * | 1989-11-06 | 1993-11-16 | General Motors Corporation | Fuel injection assembly for integrated induction system |
US5575247A (en) * | 1995-02-01 | 1996-11-19 | Nippondenso Co., Ltd. | Air intake device for an internal combustion engine |
-
2004
- 2004-11-04 AT AT04799485T patent/ATE504737T1/de not_active IP Right Cessation
- 2004-11-04 DE DE602004032162T patent/DE602004032162D1/de active Active
- 2004-11-04 JP JP2005515296A patent/JP4353434B2/ja active Active
- 2004-11-04 EP EP04799485A patent/EP1681459B1/en active Active
- 2004-11-04 WO PCT/JP2004/016301 patent/WO2005045236A1/ja active Application Filing
- 2004-11-05 TW TW093133891A patent/TWI271473B/zh not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5835266A (ja) * | 1981-08-26 | 1983-03-01 | Mitsubishi Electric Corp | 燃料噴射弁の支持構造 |
JPS6357370U (ja) * | 1986-10-01 | 1988-04-16 | ||
JPH07247924A (ja) | 1994-03-10 | 1995-09-26 | Keihin Seiki Mfg Co Ltd | 燃料噴射装置 |
JPH10196494A (ja) | 1997-01-14 | 1998-07-28 | Honda Motor Co Ltd | 燃料噴射装置 |
JPH10205410A (ja) * | 1997-01-20 | 1998-08-04 | Toyota Motor Corp | 内燃機関の燃料噴射装置 |
JP2000097131A (ja) * | 1998-09-22 | 2000-04-04 | Yamaha Motor Co Ltd | 燃料噴射弁の配置構造 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014034952A (ja) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | 鞍乗型車両の吸気構造 |
JP2014077435A (ja) * | 2012-09-24 | 2014-05-01 | Honda Motor Co Ltd | 直噴インジェクタユニットの組付方法及び組付装置 |
WO2014185091A1 (ja) * | 2013-05-17 | 2014-11-20 | 川崎重工業株式会社 | 鞍乗型車両の吸気チャンバ |
CN105339649A (zh) * | 2013-05-17 | 2016-02-17 | 川崎重工业株式会社 | 鞍乘型车辆的进气腔室 |
JPWO2014185091A1 (ja) * | 2013-05-17 | 2017-02-23 | 川崎重工業株式会社 | 鞍乗型車両 |
US9638148B2 (en) | 2013-05-17 | 2017-05-02 | Kawasaki Jukogyo Kabushiki Kaisha | Air intake chamber for saddled vehicle |
JP2015132227A (ja) * | 2014-01-15 | 2015-07-23 | スズキ株式会社 | インジェクタ取付構造 |
US10724482B2 (en) | 2018-02-05 | 2020-07-28 | Honda Motor Co., Ltd. | Air cleaner connecting tube structure |
Also Published As
Publication number | Publication date |
---|---|
DE602004032162D1 (de) | 2011-05-19 |
ATE504737T1 (de) | 2011-04-15 |
TWI271473B (en) | 2007-01-21 |
EP1681459A1 (en) | 2006-07-19 |
JP4353434B2 (ja) | 2009-10-28 |
EP1681459A4 (en) | 2009-09-23 |
JPWO2005045236A1 (ja) | 2007-05-17 |
EP1681459B1 (en) | 2011-04-06 |
TW200530503A (en) | 2005-09-16 |
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