CN1366129A

CN1366129A - Structure of air filter for vehicle

Info

Publication number: CN1366129A
Application number: CN01119356A
Authority: CN
Inventors: 大高敏浩; 新村裕幸
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2001-01-19
Filing date: 2001-05-30
Publication date: 2002-08-28
Anticipated expiration: 2021-05-30
Also published as: TW541394B; CN1227448C; ES2204265B1; JP2002213311A; ES2204265A1; ITTO20020043A0; JP3974333B2; ITTO20020043A1

Abstract

The air filter element 77 is arranged in upward separation over a prescribed clearance HL from the bottom surface 81a of an air cleaner case 76 facing the interior of a clean side 93 of the air cleaner 18. The lower surface 77a of the air filter element 77, the bottom surface 81a, and two sidewalls 81b and 82a of the air cleaner case 76 enclose and form the oil passage 90, which has the drain opening for oil and the like at an end. It can drain oil and the like via a simple structure, reduce the number of parts and the cost of manufacturing by dispensing with a conventional structure having a chamber, and extend the replacement period of an air filter element.

Description

The structure of air filter for vehicle

The present invention relates to owing to the path of establishing wet goods in air-strainer makes that it is simple in structure, number of spare parts is few, easy assembling and can prolong the air-filtering element replacement time be suitable for the air filter for vehicle structure.

In the prior art, as having, be known such as the structure of in the flat 7-119431 communique of day open patent " the channelling gas reflux apparatus of multiple cylinder engine ", recording and narrating from the air filter for vehicle structure of engine crankcase to the air-breather of air-strainer backflow channelling gas.

Technology in the above-mentioned communique, as Fig. 1 of this communique and shown in Figure 3, before the front shell 67 of the filter case 63 of air-strainer 28 (getting employed symbol in this communique), with a plurality of bolts 81 cover plates 79 are installed on the wall 74, form chamber 83 thus, borrow the suction pipe 84 that will be linked to crankcase to be attached to this chamber 83, crankcase is communicated with chamber 83, make the intercommunicating pore of opening by cover plate 79 from crankcase inflow chamber 83 interior mist of oils 82 be discharged to element 64 sides, moisture in the chamber 83 and oil are arranged to weep hole 88 by means of establish weep hole 88 in 83 bottoms, chamber.

In the technology of above-mentioned communique, owing to be to borrow formation chamber 83 will below chamber 83 isolated oil make chamber 83, become oily path to discharge, because this structure, for formation becomes the chamber 83 of oily path, cover plate 79, bolt 81 must be arranged, be screwed into the tapped hole of bolt 81, form the lip part of tapped hole, part number increases like this, complex structure, and man-hour is assembled in increase.

In addition, near below the intercommunicating pore 82 of chamber 83 by the clean side of air-strainer 28 is opened in front shell 67, the mist of oil that from the channelling gas that this intercommunicating pore 82 flows in the clean side, contains, in flowing through clean side, flow into element 64 sides under the air of top and be attached on the element 64, can be contemplated to this and will shorten the 64 replacing times of element.

The objective of the invention is to, in the air filter for vehicle structure, by the path of wet goods is set in air-strainer, make simple in structurely, number of spare parts is few, assembling easily, and can prolong the air-filtering replacement of element time.

For achieving the above object, the structure of air filter for vehicle of the present invention is, in vehicle with the engine ventilating device that engine crankcase is communicated with air-strainer with pipe arrangement, from leave predetermined distance configuration air-filtering element upward in the face of the air filter housing bottom surface of air-strainer clean side inner face, being fenced up by following, the air filter housing bottom surface of this air-filtering element and 2 sidewalls of air filter housing forms path, establishes exhaust port in the end of this path.

Two sidewalls by the following of air-filtering element and air filter housing bottom surface and air filter housing form passage in clean side, flow out wet goods from this passage to exhaust port, in air filter housing, do not need thus to form passage especially and oil can be discharged with simple structure.

In addition,, do not need bolt and next door, can reduce number of spare parts, reduce manufacture cost owing to be not the existing the sort of cell structure of establishing.

Owing to do not need to link the formation chamber, can reduce and assemble man-hour, assembling easily, and can reduce assembly cost with bolt.

Also promisingly make flow through the air filter housing bottom surface oily non-cohesive on it and make the bottom surface leave enough distances downwards, can not prolong the air-filtering replacement of element time in advance by wet goods contaminated air filter element from the air-filtering element.

Fig. 1 is the vehicle side view with air filtering device structure of the present invention; Fig. 2 is the system diagram of the engine ventilating device, suction system and the vent systems that include air-strainer of the present invention; Fig. 3 is an air-strainer side view of the present invention; Fig. 4 is the planimetric map of air-strainer of the present invention; Fig. 5 is the 5-5 line sectional view of Fig. 3; Fig. 6 is an enclosure body front view of the present invention; Fig. 7 is the 7-7 line sectional view of Fig. 3; Fig. 8 is the 8-8 line sectional view of Fig. 6; Fig. 9 is the vehicle rear side view that explanation is installed in the outlet pipe at air-strainer of the present invention rear portion; Figure 10 is the action diagram of the effect of explanation air filtering device structure of the present invention.

Below by the description of drawings embodiment of the invention.And drawing is pressed symbol and is pointed to.

Fig. 1 is the side view with vehicle of air filtering device structure of the present invention.Motor bike 10 as vehicle has: the power unit 12 that drives trailing wheel 11, constitute the motor 13 of these power unit 12 front portions, be installed to vaporizer 16 on this motor 13 by sucking pipe 15, and be installed on air-strainer 18 on this vaporizer 16 by connecting tube 17.

Among the figure, 21,22,23 is respectively the cylinder block that constitutes motor 13, cylinder head, the cylinder skull, the 24th, outlet pipe, the 25th, baffler, the 26th, the belt transducer stepless speed changer of the band centrifugal clutch of formation power unit 12, the 31st, handle, the 32nd, headlight, the 33rd, front shroud, the 34th, legging, the 35th, front mudguard, the 37th, front fork, the 38th, front-wheel, the 41st, pedal, the 42nd, framework of body, the 43rd, fuel tank, the 44th, vehicle seat, the 45th, helmet box, 46,46 (not shown inboard symbols 46) are pairing left and right vehicle body covers, the 47th, and back cover, the 48th, back light, the 51st, rear mudguard, the 52nd, back buffer parts, the 53rd, support, the 54th, kickpedal.

Fig. 2 is the system diagram that comprises engine ventilating device, suction system and the vent systems of air-strainer of the present invention.In cylinder block 21 as the motor 13 of 4 cycle engines, insert piston 61 movably, this piston 61 is linked to the bent axle 65 that is configured in rotationally in the crankcase 64 by wrist pin 62 and connecting rod 63, on piston 61 and 22 of cylinder heads form firing chamber 66, in cylinder head 22, extend suction port 67 from this firing chamber 66, sucking pipe 15 is connected in this suction port 67, and this sucking pipe 15 is connected in vaporizer 16, by connecting tube 17 air-strainer 18 is connected on this vaporizer 16, extends the oil that is used in the exhausting air filter cleaner 18 from these air-strainer 18 rear portions, the discharge pipe 68 of moisture; On the other hand, in cylinder head 22, extend exhaust port 71 from firing chamber 66, outlet pipe 24 is connected in this exhaust port 71, link baffler 25 in these outlet pipe 24 ends, for the mist of oil that will be communicated with in the cylinder head 22 in the crankcase 64 is discharged in the air-strainer 18, cylinder skull 23 and air-strainer 18 are linked up with breathing pipe 72 as pipe arrangement.

Motor 13 1 startings, the oil that stays in the crankcase 64 is the bent axle 65 of rotation and connecting rod 63 stirrings of shaking, and becomes the mist of oil and the spittle, the each several part in the lubricated crankcase 64.Simultaneously, mist of oil lubricates cylinder head 22 inner each several parts by in the intercommunicating pore (not shown) effluent gases cylinder head 22 in the cylinder block 21.

Then, the mist of oil in the cylinder head 22, in a direction indicated by the arrow, crankcase 64 in, pass through in the breathing pipe 72 inflow air-strainer 18 under the suction function in malleation and the air-strainer 18.

Mist of oil flows in the firing chamber 66 with suction port 67 by connecting tube 17, vaporizer 16, sucking pipe 15 in air-strainer 18 more in a direction indicated by the arrow, drains into the outside by exhaust port 71, outlet pipe 24 with baffler 25 again after the burning.

Above-mentioned breathing pipe 72 has constituted the air-breather 74 that makes the channelling gas backstreaming that includes the mist of oil in the crankcase 64 with air-strainer 18.

Fig. 3 is an air-strainer side view of the present invention, air-strainer 18 is, configuration air-filtering element 77 in air filter housing 76, anterior (front-vehicle front shown in the figure empty arrow, down be air-strainer 18 front portions with-side) connecting tube 15 is installed, rear and low part is provided with intakeport 78, extends discharge pipe 68 from the rear portion.

Fig. 4 is an air-strainer planimetric map of the present invention.This air-strainer constitutes air filter housing 76 by the housing lid 82 of enclosure body 81 and the opening portion of this enclosure body 81 of shutoff.With screw 83 ... (... represent a plurality of, together following) housing lid 82 is installed on the enclosure body 81; There is shown connecting tube 17 and breathing pipe 72 are linked to state on the enclosure body 81.Among the figure, the 85th, be communicated to intake guide in the air-strainer 18 from intakeport 78 (with reference to Fig. 3), the 86th, for breathing pipe 72 is attached to the breathing pipe mounting pipe that is arranged at enclosure body 81 on the enclosure body 81, the 87th, be located at resonator on the connecting tube 17 for reducing inhaled sound.

Fig. 5 is the 5-5 line sectional view of Fig. 3, and it illustrates: the assigned position configuration air-filtering element 77 in the enclosure body 81 of air-strainer 18 clips this air-filtering element 77 housing lid 82 is installed on the enclosure body 81.

Housing lid 82 is being installed under the situation of enclosure body 81, the following 77a of air-filtering element 77, the bottom surface 81a that is located at enclosure body 81 bottoms and sidewall 81b, be located at the sidewall 82a of housing lid 82 bottoms, the oil and the moisture that flow out in the air-strainer 18 have been constituted, particularly as the oily path 90 of effluent oil.

The width of oil path 90 is the distance W between sidewall 81b and 82a, the maximum height of oil path 90 is the distance H U between bottom surface 81a and protuberance 82b, and the minimum constructive height of oily path 90 is the distance H L (predetermined distance of being recorded and narrated in the claim 1) between bottom surface 81a and following 77a.

Among the figure, the 92nd, the contaminated side of air-strainer 18; The 93rd, the clean side of air-strainer 18.

Like this, air-filtering element 77 can only be clamped and fastened in the air-strainer 18 with enclosure body 81 and housing lid 82.

Owing to like this, in the present invention, can carry out the formation of the fixing and oily path 90 of air-filtering element 77 simultaneously, thus can reduce number of spare parts and assemble man-hour, and can reduce the air-strainer manufacture cost and boost productivity.

Air-filtering element 77 by removing the filter paper 77b that is included in airborne dust in the contaminated side 92 etc., is used for soft supporting this filter paper 77b and is located at the soft material 77c around the filter paper 77b and keeps the element holder 77d formation of this soft material 77c.

Element holder 77d forms shaped as frame for keeping soft material 77c, and is made by thin metallic plate.

In the prior art, be to form the element holder, and form element holder 77d by thin metallic plate now by resin, can do air-filtering element 77 thinner, can effectively utilize the space in the air-strainer 18, and can increase air flue, thereby improve gettering efficiency.

In addition, also can reduce the thickness (overall width direction thickness) of air-strainer 18, thereby can limit overall width broadening.

Protuberance 82b, the 82c of housing lid 82 makes the structure on the soft material 77c that compresses air-filtering element 77, therefore, air-filtering element 77 nothings can be installed on with rocking 82 of enclosure body 81 and housing lid; And can absorb the size error of enclosure body 81 and clamping air-filtering element 77 parts of housing lid 82.

Fig. 6 is an enclosure body front view of the present invention, enclosure body 81 is, by next door 95 its inner space is separated into first spacer portion 96 and second spacer portion 97, the first partition portion and the second partition portion of on these first spacer portion 96 and second spacer portion 97, closing respectively again and not shown housing lid 82 (with reference to Fig. 4) inner space being separated out with the next door, thus in air-strainer inner first Room 101 that forms by first spacer portion 96 and the first partition portion and second Room 102 that form by second spacer portion 97 and the second partition portion of forming 18.

First Room 101 of having joined air-filtering element 77 has curved wall 104 and runs through portion 105, the first bottom surface 81d and the second bottom surface 81e and exhaust port 81q, wherein, curved wall 104 is not flow to air-filtering element 77 1 sides in order to make from breathing pipe 72 (with reference to Fig. 4) by the mist of oil that intercommunicating pore 103 flows into; Run through portion 105 and be located at curved wall 104, so that mist of oil sprays downwards; The first bottom surface 81d and the second bottom surface 81e constitute enclosure body bottom surface 81a; Exhaust port 81q is used for the oil that discharge currents is crossed these first bottom surfaces 81d, the second bottom surface 81e.Among the figure, 81h, 81j, 81k, 81m are the positioning parts that air-filtering element 77 is positioned, and 81n is the connecting tube mounting hole that is used to install connecting tube 17 (with reference to Fig. 4).

Do not take advantage of the state that carries and use support 53 to prop at motor bike shown in Figure 1 10, in Fig. 6, the only angled θ of the relative horizontal plane 107 of the first bottom surface 81d tilts to the rear lower side; And the second bottom surface 81e is to tilt to the rear lower side than the first bottom surface bigger angle of 81d tilt angle theta.

Second Room 102 has minor diameter intakeport 108 and major diameter exhaust port 109.On intakeport 108, link air-breathing side pipe (not shown) and will this air-breathing side pipe front-end configuration in the gap of framework of body 42 (with reference to Fig. 1); Secondary air control valve (not shown) is installed on exhaust port 109, simultaneously, this secondary air valve is linked on the leaf valve (not shown) that is located on the cylinder head 22 (with reference to Fig. 1) by discharging side pipe; Be attached to exhaust port 71 (with reference to Fig. 2) from this leaf valve.

By such constituting, will be taken into air in second Room 102 from above-mentioned air-breathing side pipe, filter through not shown air filter, borrow to open and close the air mass flow that this secondary air control valve comes controlled filter.When secondary air control valve is opened, by leaf valve air is infeeded exhaust port 71, and make unburned gas oxidation in the exhaust, purify air thus and drain into the outside.

The switching of secondary air control valve utilizes the negative pressure in the sucking pipe 15 to carry out.

The 111st, round annular first sealing component of first spacer portion 96; The 112nd, round second sealing component of the part of second spacer portion 97; These first sealing components 111 and second sealing component 112 embed in the ditch that forms on enclosure body 81 and housing lid 82 junction plane separately.

Second sealing component 112 has

end

112a, 112b, these

ends

112a, 112b are close to the ditch that first sealing component, 111 ground embed above-mentioned junction plane, with this, make it have the sealing function identical with the annular seal member, because it is easier that its annular seal member manufactures, so can suppress the raising of cost of parts.

Fig. 7 is the 7-7 sectional view of Fig. 3, as shown in the figure, establishes curved wall 114 on housing lid 82, around the edge portion of the curved wall 104 of the enclosure body 81 of air-strainer 18; On curved wall 114, establish the portion of running through 115.

Can flow into air-filtering element 77 (with reference to Fig. 6) side by the mist of oil that these curved walls 104,114 prevent to flow in the air-strainer 18.

Fig. 8 is the 8-8 line sectional view of Fig. 6, as shown in the figure, forms than the second bottom surface 81e more recessed recess 81p to vehicle body inboard (arrow in direction) on enclosure body 81, establishes the exhaust port 81q of oil at this recess 81p rear.

Exhaust port 81q connects discharge pipe 68.

Fig. 9 is the vehicle rear side view of the discharge pipe installed of explanation air-strainer of the present invention rear portion, and the end of discharge pipe 68 is installed on the rear end of power unit 12 with clip 117, and with the front end of discharge pipe 68 with stopper 118 beyond the Great Wall.Among the figure, the 121st, stopper 118 is fixed in belt on the discharge pipe 68.

Bottom illustrates the effect of above-mentioned air filtering device structure.

Figure 10 is the action diagram of the effect of explanation air filtering device structure of the present invention.

In air-strainer 18, shown in blank arrow a～d, outer gas is passed through within the intake guide suck pollution side from intakeport 78, in air-filtering element 77 filters inflow clean side 93, flow in the connecting tubes 17 from clean side 93.

On the other hand, the mist of oil that flows in the air-strainer 18 by breathing pipe and intercommunicating pore 103 in the engine cylinder head, press arrow 1., 2. direction, flow into simultaneously in the connecting tube 17 by portion of running through 105,115 (symbol 115 please refer to Fig. 7) and air stream.

In addition, part mist of oil becomes oil droplet, fall on the first bottom surface 81d by arrow direction 3., and flow through the first bottom surface 81d of inclination by arrow direction 4., again by arrow 5., 6. direction flows to the second bottom surface 81e from the first bottom surface 81d, press arrow direction 7. from the second bottom surface 81e by in recess 81p and exhaust port 81q (with reference to Fig. 8) the inflow discharge pipe 68.

Then, oil promptly is trapped in the discharge pipe shown in Figure 9 68.The oil that is detained regularly takes off stopper 118 and discharges.

Like this, in Fig. 6, by the position that mist of oil is ejected into the intercommunicating pore 103 of air-strainer 18 from breathing pipe 72 (with reference to Fig. 4), be located at 17 of air-filtering element 77 and connecting tubes, and be located at the top of enclosure body 81, can prevent in air-strainer 18 because the mist of oil that flows in the air-strainer 18 from intercommunicating pore 103 that causes from the air flows of air-filtering element 77 side direction connecting tubes 17 sides flows to the air-filtering component side; Prevent by the pollution of mist of oil air-filtering element 77.

In addition, as shown in Figure 5, oil circuit 90 of the present invention owing to have the width W of broad, increases even flow through the oil mass of bottom surface 81a, also can make it be difficult to be attached on the filter paper 77b.

Also have, because the first bottom surface 81d and the second bottom surface 81e are the faces that tilts to the rear lower side respectively, exhaust port 81q smoothly can lead oil.

As Fig. 1, Fig. 2 and Fig. 5 are illustrated, in having the motor bike 10 of the crankcase 64 that is communicated with motors 13 with breathing pipe 72 and motor 13 air-breathers 74 of air-strainer 18, it is characterized in that, leave predetermined distance HL configuration air-filtering element 77 upward from air filter housing 76 bottom surface 81a in the face of clean side 93 inner faces of air-strainer 18, following 77a with this air-filtering element 77, bottom surface 81a, 2 sidewall 81b with air filter housing 76, the path that 82a surrounds forms oily path 90, and the exhaust port 81q of oil and moisture etc. is set in the end of this oil path 90.

By the following 77a of air-filtering element 77, the bottom surface 81a of air filter housing 76 and 2 sidewall 81b of air filter housing 76,82a has formed oily path 90 in air-strainer 18, flow out wet goods from this oil path 90 to exhaust port 81q, do not need thus in air filter housing 76 to form special path and only can discharge wet goods, and can form oily path 90 at an easy rate with simple structure.

In addition,, do not need bolt and next door, can reduce number of spare parts, can reduce the manufacture cost of air-strainer 18 owing to be not the existing the sort of cell structure of establishing.

Do not form the chamber owing to do not need to link, can reduce the assembling man-hour of air-strainer 18, make assembling easily, so can reduce the assembly cost of air-strainer 18 with bolt.

In addition, for the oil that makes the bottom surface 81a that flows through air filter housing 76 can be attached to above it, and make bottom surface 81a leave enough distances downwards, promptly leave predetermined distance HL from air-filtering element 77, can can not prolong the replacing time of air-filtering element 77 in advance by oil pollution air-filtering element 77, particularly filter paper 77b.

In Fig. 6, the intercommunicating pore 103 relative connecting tubes 17 that mist of oil flows in the air-strainer 18 are located at air-filtering element 77 sides, but also be not limited thereto, also intercommunicating pore 103 relative connecting tubes 17 can be located on the enclosure body 81 with air-filtering element 77 opposite sides.As because intercommunicating pore 103 left air-filtering element 77, can prevent further that the mist of oil that flows out intercommunicating pore 103 from flowing to air-filtering element 77 1 sides.

The present invention by above-mentioned consist of can produce following effect

The vehicle according to the invention air filtering device structure is because from facing the clear of air filter The air filter housing bottom surface of clean side inboard is left predetermined distance configuration air filtration unit upward Part, by following, the air filter housing bottom surface of this air filtration element, with 2 of air filter The individual sidewall formation path that fences up, and establish outlet in the end of this path, so can be with air-filtering Oil and moisture in the device flow to outlet from the path of being located on the bottom surface, in air filter housing Need not form special path, only wet goods can be discharged with simple structure.

In addition, owing to be not the existing the sort of cell structure of establishing, do not need bolt and next door, can reduce part Quantity can reduce manufacturing cost.

Owing to not needing to link the formation chamber with bolt, can reducing assembles man-hour, is easy to assembling, and can fall Low assembly cost.

Have again, be attached to the air filter housing bottom surface for not making the oil that flows through, make the bottom surface from air Filter element leaves enough distances downwards, does not have oil pollution air filtration element, can prolong sky The replacing time of gas filter element.

Claims

1. the structure of an air filter for vehicle, in vehicle with the engine ventilating device that engine crankcase is communicated with air-strainer with pipe arrangement, it is characterized in that, from leave predetermined distance configuration air-filtering element upward in the face of the air filter housing bottom surface of the clean side inner face of aforementioned air-strainer, below this air-filtering element, aforementioned air filter housing bottom surface and aforementioned air filter housing two side fence up and form path, establishes exhaust port in this tunnel end.