WO2021095214A1 - 吸気浄化装置 - Google Patents

吸気浄化装置 Download PDF

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Publication number
WO2021095214A1
WO2021095214A1 PCT/JP2019/044772 JP2019044772W WO2021095214A1 WO 2021095214 A1 WO2021095214 A1 WO 2021095214A1 JP 2019044772 W JP2019044772 W JP 2019044772W WO 2021095214 A1 WO2021095214 A1 WO 2021095214A1
Authority
WO
WIPO (PCT)
Prior art keywords
intake
intake duct
air
guide member
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/044772
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕幸 新村
純治 宮▲崎▼
雅成 秋山
浩 田所
昭吉 東
賢 上田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to PCT/JP2019/044772 priority Critical patent/WO2021095214A1/ja
Priority to CN201990001471.0U priority patent/CN217462378U/zh
Priority to JP2021555731A priority patent/JP7210767B2/ja
Priority to EP19952649.2A priority patent/EP4060181A4/en
Priority to BR112022009020A priority patent/BR112022009020A2/pt
Publication of WO2021095214A1 publication Critical patent/WO2021095214A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • 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
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • 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
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like

Definitions

  • the present invention relates to an intake air purifying device.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to effectively utilize the inertia of the intake air in the intake air purification device to improve the intake efficiency.
  • the intake air purifier introduces the outside air as intake air into the air cleaner box (50) whose inside is divided into the dirty side (50D) and the clean side (50C) by the air cleaner element (52) and the dirty side (50D).
  • a guide member (60, 260, 260', 360) for guiding the intake air is provided in the dirty side (50D), and the guide member (60, The 260, 260', 360) has a curved guide surface (65,365), and the intake air introduced from the intake duct (53) to the dirty side (50D) is the guide surface (65,365). It is characterized in that it is guided toward the intake surface (52a) of the air cleaner element (52) along the above.
  • the guide surface (65) is a concave curved surface recessed on the opposite side to the entrance surface (52a), and the guide member (60) is an opening surface (60a) in the concave shape.
  • the concave apex (65a) may be located on the opposite side of the opening surface (60a) from the entrance surface (52a).
  • at least a part of the tangent line (66) located at the end portion (60c) on the entrance surface (52a) side of the tangent line of the guide surface (65) is directed toward the entrance surface (52a). You may.
  • the opening surface (60a) may be opened toward the entrance surface (52a). Further, in the above configuration, the opening surface (60a) may be arranged so as to be oriented along the entrance surface (52a).
  • the intake duct (53) arranged along the inlet surface (52a) is moved away from the inlet surface (52a) toward the downstream side of the intake duct (53).
  • the distance (D2) from the inlet surface (52a) may be larger.
  • the intake duct (53) is arranged so that the axis (53d) of the intake duct (53) is along the inlet surface (52a) and is oriented in the axial direction of the intake duct (53).
  • the radius of curvature (R1) of the guide surface (65) is larger than the radius of curvature (R2) of the inner circumference of the downstream end (53b) of the intake duct (53), and the guide surface (65). ) May surround the intake duct (53) from the surroundings.
  • At least a part of the guide surface (65) overlaps the downstream end (53b) of the intake duct (53). Is also good. Further, in the above configuration, at least a part of the guide surface (65) may overlap the downstream end (53b) of the intake duct (53) from the outer peripheral side in the axial direction of the intake duct (53). ..
  • the clean side (50C) is provided with a connecting tube (54) for leading the purified intake air to the outside of the air cleaner box (50), and the intake duct (53) is described as described above.
  • the flow of intake air to the connecting tube (54) may be U-shaped.
  • the guide member (60) may have a plate shape.
  • downstream end (53b) of the intake duct (53) may be arranged inside the concave shape with respect to the opening surface (60a).
  • the intake air purifier is equipped with an air cleaner box whose inside is divided into a dirty side and a clean side by an air cleaner element, and an intake duct that introduces outside air as intake air to the dirty side, and guides the intake air inside the dirty side.
  • the guide member is provided with a curved guide surface, and the intake air introduced from the intake duct to the dirty side is guided along the guide surface toward the intake surface of the air cleaner element. Will be done.
  • the intake air introduced from the intake duct to the dirty side changes its direction toward the inlet surface side along the guide surface of the guide member, and is directed toward the inlet surface of the air cleaner element by inertia, so that the inertia of the intake air is increased. It can be used effectively to improve the intake efficiency.
  • the guide surface is a concave curved surface recessed on the opposite side to the entrance surface
  • the guide member has an opening surface in the concave shape
  • the concave apex is the entrance to the opening surface. It may be located on the opposite side of the surface.
  • the intake air guided by the concave curved surface can flow from the opening surface to the inlet surface.
  • the intake air can be directed along the guide surface from the apex of the concave shape to the opening surface, and the intake air can be strongly directed toward the inlet surface side. Therefore, the intake air can be efficiently flowed to the inlet surface.
  • At least a part of the tangent line located at the end portion on the entrance surface side of the tangent line of the guide surface may be directed to the entrance surface. According to this configuration, the intake air flows to the inlet surface side of the air cleaner element along the concave curved surface of the guide surface, so that the intake air can smoothly flow to the inlet surface.
  • the opening surface may be opened toward the entrance surface. According to this configuration, the intake air guided by the guide surface can be efficiently flowed from the opening surface to the inlet surface. Further, in the above configuration, the opening surface may be arranged so as to be oriented along the entrance surface. According to this configuration, the intake air can be efficiently flowed from the opening surface to the inlet surface.
  • the intake duct arranged along the inlet surface is arranged so as to move away from the inlet surface toward the downstream side of the intake duct, and the center of the opening at the downstream end of the intake duct and the inlet surface.
  • the distance between the apex of the concave shape and the entrance surface may be larger than the distance between the two. According to this configuration, since the intake air can be guided to the entrance surface side by the guide surface from a position far from the inlet surface, a large amount of intake air can flow to the inlet surface.
  • the intake duct is arranged so that the axis of the intake duct is along the inlet surface, and the radius of curvature of the guide surface is within the downstream end of the intake duct when viewed in the axial direction of the intake duct.
  • the guide surface may surround the intake duct from the surroundings as well as being larger than the radius of curvature of the circumference. According to this configuration, the guide surface having a larger radius of curvature than the inner circumference of the downstream end of the intake duct surrounds the intake duct from the surroundings, so that the guide surface can efficiently flow the intake air over a wide range of the inlet surface. ..
  • the guide surface when viewed in the axial direction of the intake duct, at least a part of the guide surface may overlap the downstream end of the intake duct.
  • the curved guide surface when viewed in the axial direction of the intake duct, overlaps the downstream end of the intake duct, so that the intake air can be efficiently guided to the inlet surface.
  • at least a part of the guide surface may overlap the downstream end of the intake duct from the outer peripheral side in the axial direction of the intake duct. According to this configuration, most of the intake air that has passed through the intake duct hits the guide surface, so that the intake air can be efficiently guided by the guide surface.
  • the clean side is provided with a connecting tube for leading the purified intake air to the outside of the air cleaner box, and the intake air flow from the intake duct to the connecting tube is U-shaped. good.
  • the guide member may have a plate shape. According to this configuration, the volume occupied by the guide member can be reduced, and the volume of the dirty side can be secured.
  • the downstream end of the intake duct may be arranged inside the concave shape with respect to the opening surface. According to this configuration, since the intake air flows out from the downstream end of the intake duct inside the concave shape of the guide surface, the intake air can be efficiently guided by the guide surface.
  • FIG. 1 is a left side view of a motorcycle according to the first embodiment of the present invention.
  • FIG. 2 is a sectional view taken along line II-II of FIG.
  • FIG. 3 is an enlarged view of the intake air purifying device of FIG.
  • FIG. 4 is a sectional view taken along line IV-IV of FIG.
  • FIG. 5 is a perspective view of the air cleaner box as viewed from the clean side.
  • FIG. 6 is a perspective view of the intake duct and the guide member as viewed from the air cleaner element side.
  • FIG. 7 is a cross-sectional view of the intake air purifying device according to the second embodiment.
  • FIG. 8 is a perspective view of the intake duct and the guide member as viewed from the air cleaner element side in the third embodiment.
  • the directions such as front / rear / left / right and up / down are the same as the directions with respect to the vehicle body unless otherwise specified.
  • the reference numerals FR shown in each figure indicate the front of the vehicle body
  • the reference numerals UP indicate the upper part of the vehicle body
  • the reference numerals LH indicate the left side of the vehicle body.
  • FIG. 1 is a left side view of the motorcycle 1 according to the first embodiment of the present invention.
  • the motorcycle 1 is a scooter-type saddle-riding vehicle having a low-floor step floor 11 on which an occupant seated on the seat 10 rests his / her feet.
  • the motorcycle 1 has a front wheel 2 in front of the vehicle body frame 12, and the rear wheel 3 which is a driving wheel is pivotally supported by a unit swing engine 13 arranged at the rear of the vehicle.
  • the motorcycle 1 includes a front fork 14 that is pivotally supported by the front end of the vehicle body frame 12, and the front wheel 2 is pivotally supported by the lower end of the front fork 14.
  • the steering wheel 15 steered by the occupant is attached to the upper end of the front fork 14.
  • the motorcycle 1 includes a vehicle body cover 16 that covers a vehicle body such as a vehicle body frame 12.
  • the vehicle body frame 12 includes a head pipe 17 provided at the front end of the vehicle body frame 12, a down frame 18 extending rearward and downward from the head pipe 17, a lower frame 19 extending rearward from the lower end of the down frame 18, and rearward from the lower frame 19. It includes a seat frame 20 that extends upward.
  • a storage box (not shown) capable of storing items such as a helmet is provided between the left and right seat frames 20 above the unit swing engine 13.
  • the sheet 10 is supported on the upper surface of the storage box.
  • the vehicle body cover 16 includes a front cover 23 that covers the head pipe 17 from the front side, an inner cover 24 that covers the head pipe 17 and the down frame 18 from the rear side, an under cover 25 that covers the lower frame 19 from the lower side, and a seat frame.
  • a side cover 26 that covers 20 from the side is provided.
  • the unit swing engine 13 is a unit swing type engine in which an engine body 30 which is an internal combustion engine and an arm portion 31 supporting the rear wheels 3 are integrated.
  • the rear wheel 3 is pivotally supported by the rear wheel axle 3a at the rear end of the arm portion 31.
  • the engine body 30 includes a crankcase 33 for accommodating a crankshaft 32 extending in the vehicle width direction, and a cylinder portion 34 extending forward from the crankcase 33.
  • the piston (not shown) reciprocates in the cylinder portion 34.
  • the engine body 30 is a horizontal engine in which the cylinder axis 34a of the cylinder portion 34 extends substantially horizontally in the vehicle front-rear direction.
  • the intake air purification device 35 for purifying the intake air for the engine body 30 is arranged above the arm portion 31.
  • the intake air purification device 35 is connected to the cylinder portion 34 via a throttle body 36 and an intake pipe 37 arranged in front of the intake air purification device 35.
  • the intake pipe 37 is connected to an intake port on the upper surface of the cylinder portion 34.
  • FIG. 2 is a sectional view taken along line II-II of FIG.
  • the arm portion 31 extends from one side (left side) of the crankcase 33 in the vehicle width direction to one side (left side) of the rear wheel 3.
  • a belt-type continuously variable transmission (not shown), a centrifugal clutch mechanism (not shown), and a reduction mechanism composed of a plurality of gears (not shown) are provided in the hollow arm portion 31.
  • the driving force of the crankshaft 32 is transmitted to the rear wheels 3 via the belt-type continuously variable transmission, the clutch mechanism, and the reduction mechanism.
  • a sub-arm 38 extending rearward from the crankcase 33 is attached to the unit swing engine 13.
  • the sub arm 38 is located on the other side (right side) of the rear wheel 3.
  • the unit swing engine 13 is swingably supported by the vehicle body frame 12 via a link mechanism 40 provided at the front portion of the unit swing engine 13.
  • a pair of rear cushions 41 are hung between the rear end of the unit swing engine 13 and the rear of the seat frame 20 and between the sub-arm 38 and the rear of the seat frame 20.
  • the exhaust pipe 43 of the engine body 30 is pulled down from the exhaust port on the lower surface of the cylinder portion 34, extends rearward through the other side (right side) in the vehicle width direction, and is a muffler arranged on the right side of the rear wheel 3. Connected to 44. That is, the arm portion 31 is arranged on one side in the vehicle width direction with respect to the rear wheel 3 located at the center of the vehicle width of the motorcycle 1, and the muffler 44 is arranged on the other side in the vehicle width direction with respect to the rear wheel 3. Will be done.
  • the intake air purifying device 35 attached to the upper surface of the arm portion 31 is arranged on one side in the vehicle width direction with respect to the rear wheel 3, similarly to the arm portion 31. Further, the intake air purifying device 35 is arranged below the seat frame 20 and behind the cylinder portion 34 and in front of the rear cushion 41, and overlaps the rear wheels 3 from the outside in the vehicle width direction when viewed from the side of the vehicle.
  • the intake air purifying device 35 swings up and down integrally with the unit swing engine 13.
  • FIG. 3 is an enlarged view of the intake air purifying device 35 of FIG.
  • the intake air purifying device 35 receives intake air into the air cleaner box 50, the partition wall 51 that partitions the inside of the air cleaner box 50, the air cleaner element 52 provided in the partition wall 51, and the air cleaner box 50.
  • the intake duct 53 to be taken in, the connecting tube 54 for connecting the air cleaner box 50 to the throttle body 36, and the guide member 60 for guiding the intake air on the downstream side of the intake duct 53 are provided.
  • the air cleaner box 50 has a box shape that extends long in the front-rear direction of the vehicle along the arm portion 31 of the unit swing engine 13.
  • the air cleaner box 50 includes a box-shaped air cleaner case 55 in which an opening portion 55a is formed on one surface on the outer side in the vehicle width direction, a case cover 56 that covers the opening portion 55a from the outside in the vehicle width direction, and an outer surface of the case cover 56. It is provided with a side cover 57 that can be attached to.
  • the air cleaner case 55 includes a side wall portion 55b facing the partition wall 51 from the inside in the vehicle width direction, and a peripheral wall portion 55c extending outward from the peripheral edge of the side wall portion 55b in the vehicle width direction.
  • the peripheral wall portion 55c partitions the open portion 55a.
  • the case cover 56 includes a cover side wall portion 56a facing the partition wall 51 from the outside in the vehicle width direction, and a cover peripheral wall portion 56b extending inward in the vehicle width direction from the peripheral edge of the cover side wall portion 56a.
  • the case cover 56 is coupled to the air cleaner case 55 by fitting the cover peripheral wall portion 56b to the end surface of the peripheral wall portion 55c of the air cleaner case 55 from the outside in the vehicle width direction.
  • the case cover 56 is fastened to the air cleaner case 55 by a plurality of fasteners 58 (FIG. 1) inserted into the cover peripheral wall portion 56b from the outside in the vehicle width direction when viewed from the side of the vehicle.
  • a duct support hole 56d penetrating the front surface 56c is provided on the front surface 56c of the cover peripheral wall portion 56b of the case cover 56.
  • a tube support hole 55e penetrating the front surface 55d is provided on the front surface 55d of the peripheral wall portion 55c of the air cleaner case 55.
  • the partition wall 51 divides the inside of the air cleaner box 50 into a dirty side 50D on the upstream side of the air cleaner element 52 and a clean side 50C on the downstream side of the air cleaner element 52.
  • the partition wall 51 is a plate-shaped member arranged so that the plate thickness direction is directed in the vehicle width direction.
  • the partition wall 51 is sandwiched between the mating surfaces of the air cleaner case 55 and the case cover 56.
  • the partition wall 51 includes an element support hole portion 51a that penetrates the partition wall 51.
  • the air cleaner element 52 is a filter that collects dust contained in the intake air.
  • the air cleaner element 52 is a plate-shaped member arranged so that the plate thickness direction is directed to the vehicle width direction, and is substantially rectangular when viewed from the vehicle side.
  • the air cleaner element 52 is supported by the element support hole 51a by being fitted into the element support hole 51a of the partition wall 51, and closes the element support hole 51a.
  • the plate thickness of the air cleaner element 52 is larger than the plate thickness of the partition wall 51 as a whole, and the air cleaner element 52 protrudes into the dirty side 50D with respect to the partition wall 51.
  • the air cleaner element 52 is located at the rear portion of the air cleaner box 50.
  • the dirty side 50D is a room through which the intake air flows before passing through the air cleaner element 52, and is formed between the case cover 56 and the partition wall 51.
  • the dirty side 50D is provided on the outer side in the vehicle width direction with respect to the partition wall 51, and extends long in the vehicle front-rear direction.
  • the clean side 50C is a room through which the intake air after being purified through the air cleaner element 52 flows, and is formed between the partition wall 51 and the air cleaner case 55.
  • the clean side 50C is provided inside the partition wall 51 in the vehicle width direction, and extends long in the vehicle front-rear direction.
  • the air cleaner element 52 includes an element inlet surface 52a (inlet surface) exposed to the dirty side 50D and an outlet surface 52b which is a surface opposite to the element inlet surface 52a and is exposed to the clean side 50C.
  • the element inlet surface 52a faces the cover side wall portion 56a.
  • the outlet surface 52b faces the side wall portion 55b of the air cleaner case 55.
  • the element inlet surface 52a and the element outlet surface 52b are flat surfaces and are substantially parallel to each other.
  • the intake air flows into the air cleaner element 52 from the element inlet surface 52a of the dirty side 50D, and flows from the outlet surface 52b to the clean side 50C.
  • the volume of the dirty side 50D is smaller than the volume of the clean side 50C.
  • the intake duct 53 is arranged in the dirty side 50D and extends in the dirty side 50D in the front-rear direction of the vehicle.
  • the intake duct 53 is supported by the case cover 56 by fitting the outer peripheral portion into the duct support hole portion 56d of the case cover 56.
  • the upstream end 53a of the intake duct 53 projects forward from the duct support hole 56d and is exposed to the outside of the dirty side 50D.
  • the upstream end 53a is the front end of the intake duct 53 and is located at the front portion of the air cleaner box 50.
  • the side cover 57 of the air cleaner box 50 covers the front portion of the case cover 56 from the outside. Specifically, the side cover 57 covers the upstream end 53a of the intake duct 53 from the front and the outside, and also covers the portion of the cover side wall portion 56a on the rear side of the upstream end 53a from the outside.
  • a chamber portion 61 which is a room partitioned by a side cover 57 and a case cover 56, is provided at the front portion of the air cleaner box 50.
  • the chamber portion 61 is located upstream of the dirty side 50D in the flow of intake air.
  • the upstream end 53a of the intake duct 53 opens into the chamber portion 61.
  • the trailing edge of the side cover 57 and the side wall portion 56a of the cover partition the intake port 62 that opens rearward.
  • the outside air flows into the chamber portion 61 as intake air from the intake port 62.
  • the connecting tube 54 extends from the front portion of the clean side 50C to the front outside the air cleaner box 50.
  • the connecting tube 54 is supported by the air cleaner case 55 by fitting the outer peripheral portion into the tube support hole portion 55e of the air cleaner case 55.
  • the upstream end 54a of the connecting tube 54 opens to the front of the clean side 50C.
  • the connecting tube 54 extends forward from the clean side 50C and inward in the vehicle width direction, and the downstream end is connected to the throttle body 36 (FIG. 1).
  • FIG. 4 is a sectional view taken along line IV-IV of FIG.
  • FIG. 5 is a perspective view of the air cleaner box 50 as viewed from the clean side 50C side.
  • FIG. 6 is a perspective view of the intake duct 53 and the guide member 60 as viewed from the air cleaner element 52 side.
  • the air cleaner case 55 is not shown.
  • the air cleaner element 52 is illustrated by a virtual line.
  • the intake duct 53 is a pipe having a circular cross section extending substantially linearly.
  • the downstream end 53b of the intake duct which is the downstream end of the intake flow of the intake duct 53, opens rearward within the dirty side 50D.
  • the intake duct 53 is provided with a mounting portion 53c extending downward from the outer peripheral portion at the rear portion.
  • the intake duct 53 is fixed to the case cover 56 by a fixture (not shown) inserted through the mounting portion 53c.
  • the intake duct 53 is arranged in the front portion of the dirty side 50D, and is located on the upstream side (front side) of the air cleaner element 52 in the intake flow direction.
  • the intake duct 53 extends in the vehicle front-rear direction along the element inlet surface 52a of the air cleaner element 52.
  • the intake duct 53 is arranged so as to be inclined so as to be located outside in the vehicle width direction toward the downstream side. That is, the axis 53d of the intake duct 53 is provided along the element inlet surface 52a, and is inclined so as to be located outside in the vehicle width direction toward the downstream side.
  • the intake duct 53 extends from the upstream end 53a to the front and rear intermediate portions of the dirty side 50D, and the intake duct downstream end 53b is located on the outer side of the front portion of the element inlet surface 52a of the air cleaner element 52. Further, the intake duct downstream end portion 53b is located between the upper edge 52c and the lower edge 52d of the air cleaner element 52. That is, the intake duct downstream portion 53e, which is the downstream end portion of the intake duct 53 including the intake duct downstream end portion 53b, overlaps the front portion of the element inlet surface 52a from the outside in the vehicle width direction when viewed from the vehicle side.
  • the axis 53d of the intake duct 53 is arranged so as to move away from the element inlet surface 52a toward the outside in the vehicle width direction toward the downstream side.
  • the guide member 60 is arranged in the dirty side 50D downstream of the intake duct downstream end 53b of the intake duct 53 and behind the intake duct downstream end 53b. Further, the guide member 60 is arranged behind the front end of the air cleaner element 52 and outside the element inlet surface 52a, and overlaps the element inlet surface 52a of the air cleaner element 52 in a vehicle side view.
  • the guide member 60 is a cup-shaped member in which a hollow spherical body is cut at the guide member outlet opening surface 60a (opening surface) to form a hemispherical shape, and the guide member inlet opening surface 60b is further cut. Is.
  • the guide member 60 is arranged so that the guide member outlet opening surface 60a, which is the cup-shaped opening surface, faces the element inlet surface 52a side of the air cleaner element 52.
  • the cup-shaped inner surface of the guide member 60 is a guide surface 65 that guides the intake air toward the element inlet surface 52a of the air cleaner element 52.
  • the guide surface 65 is a concave curved surface in which the inner surface of the cup shape is recessed on the opposite side of the element inlet surface 52a with reference to the guide member outlet opening surface 60a.
  • the guide member outlet opening surface 60a exposes the guide surface 65 to the element inlet surface 52a side of the air cleaner element 52.
  • the guide member 60 includes a guide member inlet opening surface 60b formed so as to cut out a part of the side surface of the cup shape.
  • the guide member inlet opening surface 60b is provided on the front surface of the guide member 60 in the top view of FIG.
  • the guide member inlet opening surface 60b is arranged in front of the intake duct downstream end portion 53b of the intake duct 53.
  • the guide member 60 is arranged behind the intake duct downstream end portion 53b in a direction in which the guide member inlet opening surface 60b intersects the axis 53d of the intake duct 53.
  • the guide member inlet opening surface 60b exposes the guide surface 65 to the intake duct downstream end portion 53b side of the intake duct 53.
  • the guide member outlet opening surface 60a and the guide member inlet opening surface 60b are substantially orthogonal to each other.
  • the end edge 60c (end portion on the inlet surface side) of the guide member 60 on the element inlet surface 52a side for partitioning the guide member outlet opening surface 60a is arcuate.
  • the guide member 60 has a shape obtained by bending a flat plate member into a cup shape, and the guide member 60 has a plate shape.
  • the guide member 60 is arranged so that the guide member outlet opening surface 60a is separated from the element inlet surface 52a of the air cleaner element 52 by a predetermined distance outward in the vehicle width direction. Further, the guide member outlet opening surface 60a is arranged along the element inlet surface 52a, and the guide member outlet opening surface 60a and the element inlet surface 52a are substantially parallel to each other.
  • the concave apex 65a of the guide surface 65 when the guide member outlet opening surface 60a is used as a reference is on the side opposite to the element inlet surface 52a with respect to the guide member outlet opening surface 60a.
  • the inner diameter of the guide surface 65 increases from the apex 65a toward the guide member outlet opening surface 60a.
  • the apex 65a is located on the cup-shaped bottom surface of the guide member 60, and the guide member outlet opening surface 60a faces the bottom surface.
  • the tangent line 66 located at the edge 60c for partitioning the guide member outlet opening surface 60a faces the element inlet surface 52a and is directed to the element inlet surface.
  • the tangent 66 intersects the element inlet surface 52a as long as it is located on the edge 60c, regardless of where it is located on the edge 60c. That is, the tangent line 66 intersects the element inlet surface 52a over the entire circumference of the edge 60c.
  • the tangent line 66 may have at least a part of the tangent line 66 located at the end edge 60c directed to the element inlet surface 52a.
  • the edge 60c of the guide member 60 overlaps the element inlet surface 52a.
  • substantially the entire circumference of the edge 60c of the guide member 60 overlaps the element inlet surface 52a, but at least a part of the edge 60c may overlap the element inlet surface 52a.
  • the front end portion of the guide member 60 is arranged outside the intake duct downstream portion 53e of the intake duct 53 in the vehicle width direction, and covers the intake duct downstream portion 53e of the intake duct 53 from the side opposite to the element inlet surface 52a.
  • the intake duct downstream portion 53e of the intake duct 53 enters the inside of the guide surface 65 from the guide member inlet opening surface 60b, and the intake duct downstream end portion 53b of the intake duct 53 opens rearward inside the guide surface 65. ..
  • the intake duct downstream end 53b is arranged inside the guide surface 65 with respect to the guide member outlet opening surface 60a.
  • the opening of the intake duct downstream end 53b is located in the upper and lower intermediate portions in the guide surface 65.
  • the front end portion 65b of the guide surface which is the front end portion of the guide surface 65, includes the guide member inlet opening surface 60b, and the front end portion 65b of the guide surface takes in air into the intake duct downstream portion 53e of the intake duct 53 in the axial direction of the intake duct 53. It overlaps from the outer peripheral side of the duct 53 and covers the intake duct downstream portion 53e. That is, the front end portion 65b of the guide surface of the guide surface 65 and the downstream portion 53e of the intake duct of the intake duct 53 are continuous in the axial direction of the intake duct 53. Further, referring to FIGS.
  • the concave apex 65a of the guide surface 65 is larger. That is, the guide surface 65 is arranged offset with respect to the intake duct downstream end portion 53b on the side opposite to the element inlet surface 52a.
  • the rear portion 65c of the guide surface 65 is curved so as to approach the element entrance surface 52a side toward the rear side.
  • the guide member 60 is arranged closer to the front side of the air cleaner element 52 in the vehicle front-rear direction of the element inlet surface 52a, and the rear portion 65c of the guide surface 65 is on the side of the front and rear intermediate portions of the element inlet surface 52a. Located in the direction.
  • the rear portion 65c of the guide surface 65 overlaps the intake duct downstream end portion 53b of the intake duct 53 from the rear when viewed in the axial direction of the intake duct 53, and covers the opening of the intake duct downstream end portion 53b from the rear.
  • the radius of curvature R1 of the guide surface 65 is the radius of curvature R2 of the inner circumference of the intake duct downstream end 53b of the intake duct 53 and the intake duct downstream portion. It is larger than the outer diameter of 53e.
  • the intake duct downstream portion 53e of the intake duct 53 is surrounded from the periphery by a guide surface 65 having a diameter larger than that of the intake duct downstream portion 53e.
  • the intake duct downstream portion 53e on the downstream side of the intake duct 53 is surrounded by the guide surface 65 from above, outside, below, and from the rear.
  • the front end portion 65b of the guide surface of the guide surface 65 abuts on the outer surface of the intake duct downstream portion 53e of the intake duct 53 at a position on the upstream side of the apex 65a.
  • the guide member 60 is a component manufactured in a process different from that of the intake duct 53. Therefore, the intake duct 53 can be made into a simple shape, and the guide member 60 can be easily formed to have a diameter larger than that of the intake duct 53.
  • the guide surface 65 is curved so as to be closer to the element inlet surface 52a from the apex 65a side toward the upper side. Further, the guide surface 65 is curved so as to be closer to the element entrance surface 52a from the apex 65a side toward the lower side.
  • the cup-shaped outer peripheral surface 60d comes into contact with the inner surface of the cover side wall portion 56a of the case cover 56, and is fixed to the cover side wall portion 56a.
  • the guide member 60 may be fixed to a member different from the case cover 56.
  • the guide member 60 may be fixed to the outer peripheral portion of the intake duct downstream portion 53e of the intake duct 53.
  • the outside air flows into the chamber portion 61 from the intake port 62 as the intake W. Since the upstream end 53a of the intake duct 53 opens in the chamber portion 61, it is possible to prevent a relatively large foreign matter from entering the intake duct 53.
  • the intake W of the chamber portion 61 flows rearward from the upstream end 53a through the intake duct 53, and flows into the dirty side 50D from the downstream end 53b of the intake duct.
  • the intake air W flowing through the intake duct 53 flows into the guide surface 65 from the downstream end portion 53b of the intake duct that opens in the guide surface 65 of the guide member 60.
  • the intake air W flowing rearward into the guide surface 65 flows along the curved surface of the guide surface 65 and changes its direction toward the element inlet surface 52a inside in the vehicle width direction, from the guide member outlet opening surface 60a to the element inlet surface 52a.
  • the intake air W introduced from the intake duct 53 to the dirty side 50D hits the guide surface 65 and changes its direction toward the element inlet surface 52a, and the element of the air cleaner element 52 due to the inertia of the flow of the intake air W.
  • the intake air W can be passed through the air cleaner element 52 by effectively utilizing the inertia of the intake air W.
  • the guide surface 65 surrounds the downstream end of the intake duct 53 from the surroundings, and the radius of curvature R1 of the guide surface 65 is larger than the radius of curvature R2 and the inner circumference of the intake duct downstream end 53b of the intake duct 53. , The intake air W can be efficiently guided to the element inlet surface 52a.
  • the intake air W flowing from the guide surface 65 to the element inlet surface 52a is purified through the air cleaner element 52 and flows into the clean side 50C from the outlet surface 52b.
  • the intake W of the clean side 50C flows toward the connecting tube 54 on the front side, flows into the connecting tube 54 from the upstream end 54a, and flows into the cylinder portion 34 through the throttle body 36 and the intake pipe 37. That is, the flow of the intake air W from the intake duct 53 through the guide member 60 and the air cleaner element 52 to the connecting tube 54 is U-shaped. Therefore, the intake air purifying device 35 can be made compact.
  • a part of the intake air W that did not directly flow into the air cleaner element 52 from the guide surface 65 receives the air cleaner element 52 from the rear portion of the element inlet surface 52a located on the rear side of the guide member 60. It flows to the clean side 50C.
  • the air cleaner box 50 whose inside is divided into the dirty side 50D and the clean side 50C by the air cleaner element 52.
  • a guide member 60 for guiding the intake air W is provided in the dirty side 50D, and the guide member 60 is provided with a curved guide surface 65.
  • the intake air W introduced from the intake duct 53 to the dirty side 50D is guided along the guide surface 65 toward the element inlet surface 52a of the intake air W in the air cleaner element 52.
  • the intake air W introduced from the intake duct 53 to the dirty side 50D changes its direction toward the element inlet surface 52a along the guide surface 65 of the guide member 60, and the element inlet of the air cleaner element 52 due to inertia. Since it faces the surface 52a, the intake efficiency can be improved by effectively utilizing the inertia of the intake W.
  • the guide surface 65 is a concave curved surface recessed on the opposite side to the element inlet surface 52a
  • the guide member 60 includes a guide member outlet opening surface 60a in a concave shape
  • the concave apex 65a is a guide member. It is located on the opposite side of the element inlet surface 52a with respect to the outlet opening surface 60a. According to this configuration, the intake air W guided by the concave curved surface can flow from the guide member outlet opening surface 60a to the element inlet surface 52a. Further, the intake air W can be made to follow the guide surface 65 from the concave apex 65a to the guide member outlet opening surface 60a, and the intake air W can be strongly directed toward the element inlet surface 52a.
  • the intake air W can be efficiently flowed to the element inlet surface 52a.
  • at least a part of the tangent line 66 located at the edge 60c on the element entrance surface 52a side of the tangent line of the guide surface 65 is directed to the element entrance surface 52a.
  • the guide member 60 includes a guide member outlet opening surface 60a that exposes the concave shape of the guide surface 65, and the guide member outlet opening surface 60a opens toward the element inlet surface 52a. According to this configuration, the intake air W guided by the guide surface 65 can be efficiently flowed from the guide member outlet opening surface 60a to the element inlet surface 52a.
  • the guide member outlet opening surface 60a opens toward the element inlet surface 52a. According to this configuration, the intake air W guided by the guide surface 65 can be efficiently flowed from the guide member outlet opening surface 60a to the element inlet surface 52a. Further, the guide member outlet opening surface 60a is arranged in a direction along the element inlet surface 52a. According to this configuration, the intake air W can be efficiently flowed from the guide member outlet opening surface 60a to the element inlet surface 52a.
  • the intake duct 53 arranged along the element inlet surface 52a is arranged so as to move away from the element inlet surface 52a toward the downstream side of the intake duct 53, and the opening of the intake duct downstream end 53b of the intake duct 53.
  • the distance D2 between the concave apex 65a and the element inlet surface 52a is larger than the distance D1 between the center 53f and the element inlet surface 52a.
  • the intake duct 53 is arranged so that the axis 53d of the intake duct 53 is along the element inlet surface 52a, and when viewed in the axial direction of the intake duct 53, the radius of curvature R1 of the guide surface 65 is the intake duct 53.
  • the guide surface 65 surrounds the intake duct 53 from the periphery while being larger than the radius of curvature R2 on the inner circumference of the intake duct downstream end 53b.
  • the guide surface 65 having a larger radius of curvature than the inner circumference of the downstream end portion 53b of the intake duct of the intake duct 53 surrounds the intake duct 53 from the surroundings. It can be efficiently flowed over a wide range of.
  • the guide surface 65 overlaps the intake duct downstream end portion 53b of the intake duct 53.
  • the curved guide surface 65 overlaps the intake duct downstream end portion 53b of the intake duct 53, so that the intake W is efficiently guided to the element inlet surface 52a. it can.
  • at least a part of the guide surface 65 overlaps the intake duct downstream end portion 53b of the intake duct 53 from the outer peripheral side in the axial direction of the intake duct 53. According to this configuration, most of the intake air W that has passed through the intake duct 53 hits the guide surface 65, so that the intake air W can be efficiently guided by the guide surface 65.
  • the clean side 50C is provided with a connecting tube 54 for leading the purified intake air W to the outside of the air cleaner box 50, and the flow of the intake air W from the intake duct 53 to the connecting tube 54 is U-shaped. .. According to this configuration, even if the flow of the intake air W from the intake duct 53 to the connecting tube 54 is U-shaped, the direction in which the intake air W flows is efficiently bent by the guide surface 65 which is a concave curved surface. Therefore, the intake efficiency can be increased. Further, since the guide member 60 has a plate shape, the volume occupied by the guide member 60 can be reduced, and the volume of the dirty side 50D can be secured.
  • the intake duct downstream end portion 53b of the intake duct 53 is arranged inside the concave shape of the guide surface 65 with respect to the guide member outlet opening surface 60a. According to this configuration, since the intake air W flows out from the intake duct downstream end portion 53b of the intake duct 53 inside the concave shape of the guide surface 65, the intake air W can be efficiently guided by the guide surface 65.
  • the first embodiment shows an aspect to which the present invention is applied, and the present invention is not limited to the first embodiment.
  • the guide member 60 has been described as having a hollow hemispherical shape, but the present invention is not limited to this, and the guide member may have a dome shape, for example. Further, the guide member may have a parabolic shape. In this case, the directivity of the intake air W to the element inlet surface 52a can be strengthened by the guide surface formed by the paraboloid surface. Further, in the first embodiment, at least a part of the guide surface 65 has been described as being overlapped with the intake duct downstream end portion 53b of the intake duct 53 from the outer peripheral side in the axial direction of the intake duct 53.
  • the guide surface 65 may be separated from the intake duct 53 at the downstream end 53b of the intake duct 53 on the downstream side (rear side) in the axial direction of the intake duct 53.
  • the air cleaner box 50 formed in a box shape by the air cleaner case 55 and the case cover 56 has been described as an example of the air cleaner box, but the present invention is limited thereto. It's not something.
  • an air cleaner box is also provided in which a dirty side is provided as a room surrounded by a vehicle body cover, exterior parts (for example, a rear fender), a seat for passengers, and the like.
  • an intake duct that penetrates the wall portion forming the lower surface of the dirty side from below and opens into the dirty side is provided, and above (downstream) the intake duct, from the intake duct to the dirty side.
  • a guide member may be provided to guide the flowing intake air toward the inlet surface of the air cleaner element in the dirty side.
  • the intake air purifying device 35 mounted on the motorcycle 1 has been described as an example, but the present invention is not limited to this, and the present invention is the front wheel or the rear. It can be applied to a three-wheeled saddle-type vehicle having two wheels, a saddle-type vehicle having four or more wheels, and various devices equipped with an internal combustion engine.
  • FIG. 7 is a cross-sectional view of the intake air purifying device 35 according to the second embodiment.
  • the guide member 260 is provided in place of the guide member 60 of the first embodiment.
  • the guide member 260 is a guide member 60 extended rearward in the axial direction of the intake duct 53.
  • the rear end of the guide member 260 is located between the front and rear intermediate portions of the element inlet surface 52a and the trailing edge of the element inlet surface 52a.
  • a guide member 260'extended further to the rear side than the guide member 260 may be provided.
  • the rear end of the guide member 260' is located near the trailing edge of the element inlet surface 52a.
  • FIG. 8 is a perspective view of the intake duct 53 and the guide member 360 as viewed from the air cleaner element 52 side in the third embodiment.
  • the cup shape of the guide member 60 has been described as being hemispherical.
  • the bottom surface 360f of the cup shape is the element inlet surface 52a of the air cleaner element 52 (FIG. It is a flat surface substantially parallel to 3).
  • the guide surface 365 of the guide member 360 is a concave curved surface recessed on the opposite side of the element inlet surface 52a. The intake air W hits the guide surface 365 and is guided toward the element inlet surface 52a.
  • Intake purification device 50 Air cleaner box 50C Clean side 50D Dirty side 52 Air cleaner element 52a Element inlet surface (entrance surface) 53 Intake duct 53b Downstream end of intake duct (downstream end) 53d Axial line 53f Center 54 Connecting tube 60, 260, 260', 360 Guide member 60a Guide member Outlet opening surface (opening surface) 60c edge (end on the entrance surface side) 65,365 Guide surface 65a Apex 66 Tangent D1 distance (distance between the center of the opening at the downstream end of the intake duct and the inlet surface) D2 distance (distance between the apex and the entrance surface) R1 radius of curvature (radius of curvature of the guide surface) R2 radius of curvature (radius of curvature on the inner circumference of the downstream end of the intake duct)

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
PCT/JP2019/044772 2019-11-14 2019-11-14 吸気浄化装置 Ceased WO2021095214A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2019/044772 WO2021095214A1 (ja) 2019-11-14 2019-11-14 吸気浄化装置
CN201990001471.0U CN217462378U (zh) 2019-11-14 2019-11-14 进气净化装置
JP2021555731A JP7210767B2 (ja) 2019-11-14 2019-11-14 吸気浄化装置
EP19952649.2A EP4060181A4 (en) 2019-11-14 2019-11-14 INTAKE AIR CLEANER
BR112022009020A BR112022009020A2 (pt) 2019-11-14 2019-11-14 Dispositivo purificador de ar de admissão

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/044772 WO2021095214A1 (ja) 2019-11-14 2019-11-14 吸気浄化装置

Publications (1)

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WO2021095214A1 true WO2021095214A1 (ja) 2021-05-20

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EP (1) EP4060181A4 (https=)
JP (1) JP7210767B2 (https=)
CN (1) CN217462378U (https=)
BR (1) BR112022009020A2 (https=)
WO (1) WO2021095214A1 (https=)

Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2003227425A (ja) * 2002-01-31 2003-08-15 Toyo Roki Mfg Co Ltd エアクリーナ
JP2008025396A (ja) * 2006-07-19 2008-02-07 Mazda Motor Corp エアクリーナ
JP2010180773A (ja) * 2009-02-05 2010-08-19 Toyota Boshoku Corp 車両用エアクリーナ
JP2015229432A (ja) 2014-06-05 2015-12-21 本田技研工業株式会社 鞍乗型車両のエアクリーナ装置
CN206267987U (zh) * 2016-12-06 2017-06-20 光阳工业股份有限公司 引擎的空气滤清器

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Publication number Priority date Publication date Assignee Title
US4713097A (en) * 1987-02-27 1987-12-15 Ford Motor Company Integrated engine air cleaner and venturi resonator
JP5922333B2 (ja) 2011-03-02 2016-05-24 本田技研工業株式会社 小型車両用エアクリーナ構造
JP6028599B2 (ja) 2013-02-06 2016-11-16 スズキ株式会社 エアークリーナー

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Publication number Priority date Publication date Assignee Title
JP2003227425A (ja) * 2002-01-31 2003-08-15 Toyo Roki Mfg Co Ltd エアクリーナ
JP2008025396A (ja) * 2006-07-19 2008-02-07 Mazda Motor Corp エアクリーナ
JP2010180773A (ja) * 2009-02-05 2010-08-19 Toyota Boshoku Corp 車両用エアクリーナ
JP2015229432A (ja) 2014-06-05 2015-12-21 本田技研工業株式会社 鞍乗型車両のエアクリーナ装置
CN206267987U (zh) * 2016-12-06 2017-06-20 光阳工业股份有限公司 引擎的空气滤清器

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Title
See also references of EP4060181A4

Also Published As

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BR112022009020A2 (pt) 2022-08-09
JPWO2021095214A1 (https=) 2021-05-20
EP4060181A4 (en) 2022-10-26
JP7210767B2 (ja) 2023-01-23
EP4060181A1 (en) 2022-09-21
CN217462378U (zh) 2022-09-20

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