CN1197155A

CN1197155A - Device for feeding secondary air to the discharge system of small motor two-wheel vehicle

Info

Publication number: CN1197155A
Application number: CN98105534A
Authority: CN
Inventors: 横山雅史; 铃木健辅; 藤井隆彰; 横谷登
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1997-04-24
Filing date: 1998-03-12
Publication date: 1998-10-28
Anticipated expiration: 2018-03-12
Also published as: DE19808500A1; JPH10299471A; ITTO980205A1; CN1419040A; CN1093217C; JP3932439B2; KR100296014B1; DE19808500C2; TW387968B; KR19980080511A; CN1239816C

Abstract

The invention relates to a device which feeds overfire air for an air exhaust system of a small-sized power-driven two-wheel car, when a maintenance operation is operated, a car cover is not needed to be mounted and demounted, the design of an air cleaner is not confined to improve the noise reduction effect, and the length of an overfire air supply pipe can be shortened. In the device which feeds overfire air to an air exhaust system of a small-sized power-driven two-wheel car 1 through an overfire air supply pipe 37, an air cleaner 35 for the air exhaust system is arranged on a silencer 28, and a clappet valve 36 is also arranged on the silencer. The front end portion of the overfire air supply pipe is connected with the air cleaner for the air exhaust system, and the clappet valve is inserted and mounted in midway.

Description

Device to the vent systems feeding secondary air of equipment of small motor bicycle

The present invention relates to the vent systems feeding secondary air of the internal-combustion engine in equipment of small motor bicycle such as scooter, so that the device of exhaust gas purifying.

Device as the past to the vent systems feeding secondary air of equipment of small motor bicycle such as scooter, the air-strainer (air-strainer that vent systems is used) that is used to make the air cleaningization of supplying with vent systems is installed on vehicle body frame, safety check (leaf valve) is installed in this machine internal-combustion engine, and (spy opens flat 5-139364 communique, Te Kaiping 5-131969 communique, spy open flat 5-332132 communique), the air-strainer safety check (spy opens flat 4-47114 communique) that vent systems is used is installed in the container below cylinder.

In the secondary air-supply device in aforementioned past, secondary air supplying pipe part and secondary air supplying pipe be in order to absorb produced by shaking of internal-combustion engine unit flexible, so must hold loose part (flection part), does growth.This secondary air supplying pipe part will be contained in the vent systems on this stature air-strainer of using and the safety check that is contained on the internal-combustion engine and couple together, and this secondary air supplying pipe will be contained in air-strainer and the safety check that the vent systems on the container uses and be connected on the vent systems (attachment portion of secondary air supplying pipe).Also have, when carrying out the maintenance operation of secondary air-supply devices such as air-strainer that vent systems uses and safety check, must load and unload the vehicle body cover.

Also have, be contained in occasion on vehicle body frame or the container at the air-strainer that vent systems is used, it often is configured in the space of the sky between vehicle body frame, container and the vehicle body cover etc., and in the case, the shape of the filter cleaner that vent systems is used, the setting of capacity all are restricted.Therefore, for instance, under such restriction, if the air-strainer that vent systems is used is set the many shapes of planar section for, then this planar section vibrates, the generation noise.

The application's invention relates to the improvement to the device of the vent systems feeding secondary air of equipment of small motor bicycle that addresses the above problem, invention described in its claim 1 is by the device of secondary air pipe to the vent systems feeding secondary air of equipment of small motor bicycle, the fore-end of this air supply pipe is connected with the filter cleaner that vent systems is used, and the way is inserted safety check is installed therein, it is characterized in that the air-strainer that aforementioned vent systems is used is located on the baffler.

The described invention of claim 1 so the air-strainer that vent systems is used is arranged to expose from the vehicle body cover, does not need to load and unload the vehicle body cover owing to constitute as described above when its maintenance operation.Also have,, for example make the shape, the capacity that are suitable for erasure effect, therefore, can improve the erasure effect of the chatter of the exhaust sound of the internal-combustion engine that reaches the air-strainer that vent systems uses and safety check owing to can freely set its shape, capacity.

Also have, when as claim 2 is said, constituting the said invention of claim 1, because the air-strainer used of vent systems is that baffler is swung with the part of the internal-combustion engine unit of swing all with safety check, so interconnective secondary air supplying pipe part needn't be made the swing that can absorb internal combustion engine component and the contraction that produces between air secondary cleaner, safety check and the vent systems (attachment portion of secondary air supplying pipe) that vent systems is used, the length of its various piece and whole length can be made short.

Also have, be located on the baffler because air-strainer that vent systems is used and safety check are all concentrated, so can make whole secondary air-supply device compact structure.Have again, owing to air-strainer and safety check that vent systems is used all are arranged to expose from the vehicle body cover, so when carrying out their maintenance operation, do not need to load and unload the vehicle body cover.

Also have, be provided with certain interval, so can not be subjected to by the heat of its generation harmful because safety check leaves internal-combustion engine.

The said invention of claim 3 is the device to the vent systems feeding secondary air of equipment of small motor bicycle, by the vent systems feeding secondary air of secondary air supplying pipe to equipment of small motor bicycle, the fore-end of this air supply pipe is connected with the air-strainer that vent systems is used, and the way is inserted safety check is installed therein, it is characterized in that aforementioned safety check is located on the baffler.

The said invention of claim 3 is owing to constitute as previously mentioned, and safety check is arranged to expose from the vehicle body cover, and its maintenance is improved.Also have, because safety check is that baffler is swung with the part of swing IC machine parts, what produce so the secondary air supplying pipe that safety check and vent systems (attachment portion of secondary air supplying pipe) are coupled together needn't be made the swing that can absorb the internal-combustion engine unit stretches, and its length can be made short.Have again, be provided with certain interval, so can not be subjected to by the heat of its generation harmful because safety check leaves internal-combustion engine.

Have again, when as claim 4 is said, constituting the said invention of claim 3, because the air-strainer that vent systems is used is that power transmitting deice is swung with the part of the internal-combustion engine unit of swinging also, also needn't make stretching that the swing that can absorb owing to internal-combustion engine produces so connect air-strainer that vent systems uses and the secondary air supplying pipe part of safety check, its length can be made short, and then can make the whole length of secondary air supplying pipe all make short.

Also have, when constituting the said invention of claim 3 as claim 5 is said, the formation of the air-strainer that vent systems is used is easy.Have again, owing to do not need independent air cleaner casing and the stay of usefulness is installed, so can reduce number of parts.

Have again, because vent systems is that the air-strainer that suction system is used is swung with the part of the internal-combustion engine unit of swinging also with air-strainer, what produce so the secondary air supplying pipe part of air-strainer that the connection vent systems is used and safety check also needn't be made the swing that can absorb internal-combustion engine is flexible, its length can be made short, and then can make the whole length of secondary air supplying pipe make short.

Also have, when as claim 6 is said, constituting the said invention of claim 5, as long as owing to make the front end of secondary air supplying pipe pass the shell of the air-strainer that suction system uses and be attached thereto, just can obtain the secondary air used through the vent systems that purifies, so the formation of the air-strainer that vent systems is used is more prone to.

Have again, when as claim 7 is said, constituting the said invention of claim 5, the mutual interference mutually between the secondary air supply that can prevent to supply with vent systems and the primary air supply system of supplying with suction system.

Also have, when constituting the said invention of claim 7 as claim 7 is said, the formation of each air suction inlet of the air-strainer that air-strainer that vent systems is used and suction system are used is easy.

Also have, when as claim 9 is said, constituting the said invention of claim 7, the mutual interference mutually between the secondary air supply that can prevent to supply with vent systems and the primary air supply system of supply suction system.

Have again, when as claim 10 is said, constituting the said invention of claim 3, the air-strainer that vent systems can be used is fixedly mounted on the vehicle body frame, simultaneously, and the air-strainer aesthetic appearance on every side that can keep baffler and suction system to use.

Also have, when as claim 11 is said, constituting the said invention of claim 3, because the air-strainer that vent systems is used is also swung with internal-combustion engine, also needn't make stretching that the swing that can absorb the internal-combustion engine unit produces so connect air-strainer that vent systems uses and the secondary air supplying pipe part of safety check, its length can be made short, and then can make the whole length of secondary air supplying pipe all make short.

Have again, the air-strainer that vent systems can be used is located at and has in the internal-combustion engine guard shield of this side same side of baffler body portion, therefore, owing to air-strainer and the safety check that vent systems can be used closely dispose, so can whole secondary air-supply device is very compact.

Also have, when constituting the said invention of claim 11 as claim 12 is said, the formation of the air-strainer that vent systems is used is easy.Have again, owing to do not need independent air cleaner casing and the stay of usefulness is installed, so can reduce number of parts.

The said invention of claim 13 is the device to the vent systems feeding secondary air of equipment of small motor bicycle, by the vent systems feeding secondary air of secondary air supplying pipe to equipment of small motor bicycle, the fore-end of this air supply pipe is connected with the air-strainer that vent systems is used, and way insertion therein is installed with safety check, it is characterized in that air-strainer that aforementioned vent systems is used and aforementioned safety check are located at the bottom on chassis.

The said invention of claim 13 is owing to constituting by the front is said, so the air-strainer that vent systems can be used and safety check centralized configuration are near the suspension rod of internal-combustion engine unit, therefore, can make the length of secondary air supplying pipe short, simultaneously, can whole secondary air-supply device is very compact.

Also have, when as claim 14 is said, constituting the said invention of claim 13, the length of secondary air supplying pipe further can be shortened.

Have again, when constituting the said invention of in the claim 1 to 14 any one as claim 15 is said, baffler body portion, the maintenance operation that is located at secondary air-supply device (air-strainer, safety check that vent systems is used) on this baffler body portion, trailing wheel etc. are easy.

Also have, when as claim 16 is said, constituting the said invention of claim 1 any one to claim 15, baffler, the handling operation of secondary air-supply device (air-strainer, safety check that vent systems is used) that is located at this baffler or bottom, chassis are easy, simultaneously, can not will its unload and carry out its maintenance operation from vehicle fully, so the maintenance operation of their maintenance, particularly trailing wheel is easy.In addition, vehicle can be accomplished lightweight.

Have again, when as claim 17 is said, constituting the said invention of claim 1 any one to claim 16, can make the discharge gas perfect combustion of two-cycle IC engine, fully purify the back and discharge.

Also have, when as claim 18 is said, constituting the said invention of claim 1 any one to claim 17, can improve the erasure effect of the chatter of the exhaust sound of internal-combustion engine of the air-strainer that reaches vent systems and safety check.

Fig. 1 is the profile that has to the equipment of small motor bicycle of the device of vent systems feeding secondary air, and this feeding secondary air supplier is relevant with claim 1 to 3,15 to 18 said one embodiment of the present of invention (embodiment 1) of the application.

Fig. 2 is the local vertically side view of section that the major component of Fig. 1 is amplified.

Fig. 3 analyses and observe schematic plan view for the partial lateral that the major component (internal combustion engine component part) of Fig. 1 is amplified.

Baffler partly the local vertically side view of section of Fig. 4 for Fig. 2 only is shown.

Fig. 5 analyses and observe schematic plan view for the partial lateral of the internal-combustion engine unit part corresponding with Fig. 3, and this internal-combustion engine unit has and the relevant device to the vent systems feeding secondary air of said one embodiment of the present of invention of the application's claim 4 (second embodiment).

Fig. 6 is internal-combustion engine unit partly the schematic plan view corresponding with Fig. 3, and this internal-combustion engine unit has claim 5 and the relevant device to the vent systems feeding secondary air of 6 said one embodiment of the present of invention (the 3rd embodiment) with the application.

Fig. 7 is the horizontal sectional plain-view drawing of housing parts of the air-strainer of Fig. 6.

Fig. 8 is internal-combustion engine unit partly the schematic plan view corresponding with Fig. 3, and this internal-combustion engine unit has claim 7 and the relevant device to the vent systems feeding secondary air of 8 said one embodiment of the present of invention (the 4th embodiment) with the application.

Fig. 9 is the horizontal sectional plain-view drawing of housing parts of the air-strainer of Fig. 8.

Figure 10 is the horizontal sectional plain-view drawing of the housing parts of the air-strainer to the device of vent systems feeding secondary air in relevant with said one embodiment of the present of invention of the application's claim 9 (the 5th embodiment), and it is the figure corresponding with Fig. 9.

Figure 11 is the profile that has the equipment of small motor bicycle of relevant with said one embodiment of the present of invention of the application's claim 10 (the 6th embodiment) device to the vent systems feeding secondary air.

Figure 12 is internal-combustion engine unit partly the schematic plan view corresponding with Fig. 3, and this internal-combustion engine unit has and the relevant device to the vent systems feeding secondary air of said one embodiment of the present of invention of the application's claim 11 (the 7th embodiment).

Figure 13 is the side view of the major component of looking from the VIII direction of Figure 12, illustrates after among the figure part being cut open.

Figure 14 is the profile of the major component of relevant with said one embodiment of the present of invention of the application's claim 12 (the 8th embodiment) device to the vent systems feeding secondary air, and it illustrates after a part is cut open, is the figure corresponding with Figure 13.

Figure 15 is the profile of equipment of small motor bicycle, and this two-wheel vehicle has claim 13 and the relevant device to the vent systems feeding secondary air of 14 said one embodiment of the present of invention (the 9th embodiment) with the application.

Figure 16 analyses and observe schematic plan view with the partial lateral that the major component of Figure 15 is amplified, and it is the figure corresponding with Fig. 3.

Figure 17 is the figure identical with Figure 15 of embodiment's (the 9th embodiment) that Figure 15 is shown modification.

Below at first explanatory drawing 1 to claim 1 to 3,15 to 18 said one embodiment of the present of invention (first embodiment) of the application shown in Figure 4.

In these figure, 1 is motor-scooter type moped for what be suitable for using with the device to the vent systems feeding secondary air of the present embodiment shown in the

left side view

1, and 2 is vehicle seat, separates with low chassis portion 3 in its place ahead, has a steering head 4 upright.The handle rotating shaft 6 of rotating with handle 5 is bearing on the head pipe 7, in its lower end, by front fork 8 suspension front-wheels 9.From the beginning following vehicle frame 10 is managed 7 and is extended downwards, rearward extends from chassis portion 3 behind the bifurcated of the left and right sides, bottom, then is connected with back vehicle frame 11.This back vehicle frame 11 tilts and up rearward extends, and arrives the rear end lower of vehicle seat 2.

Down be provided with the rear portion of topped vehicle frame 10 down and along its leg guard 12, this leg guard 12 extends to the rear lower side in vehicle frame 10 and back vehicle frame 11 front portion that forms the vehicle body of bone by these, cover 13 with the chassis of chassis portion in the middle of the topped vehicle body and be connected.And, this chassis cover 13 rises to oblique rear from level, link to each other with the topped vehicle body cover 14 of the rear prolongation of vehicle frame 11 afterwards, and this vehicle body cover 14 links to each other with intermediate cap 15 with its front upper place part, and this intermediate cap 15 covers the place ahead part of the fuel tank 16 that is contained in vehicle seat 2 belows with this vehicle seat 2.

The 17 internal-combustion engine units of using for Rear wheel suspension (swing unit), its front portion can be contained in the lower front of back vehicle frame 11 by suspension rod 18 with swinging up and down, and simultaneously, its rear portion then is suspended on the rear portion of back vehicle frame 11 by vibration damper 19.

Front portion at internal-combustion engine unit 17 is provided with internal-combustion engine 20 integratedly, at the rear portion, with axle supporting wheels 21.And the power transmitting deice (variable v-belt drive) 22 of the power of internal-combustion engine 20 being passed to trailing wheel 21 is that baffler 28 is clipped in the middle trailing wheel 21 with an element that constitutes the aftermentioned vent systems, is located at integratedly on the internal combustion engine component 17.

Internal-combustion engine 20 is two-cycle IC engines, and the suction system of being made up of air-strainer 23, vaporizer 24 and sucking pipe 25 links to each other with the intakeport (not shown) of internal-combustion engine 20.

Outlet pipe 27 stretches out under the direction forward from the relief opening of the cylinder portion that is located at internal-combustion engine 20, through crooked, towards the rear, is connected with baffler body portion 30 at the rear portion, and constitutes baffler 28 thus.

Outlet pipe 27 can freely be connected on each flange of attachment portion 31 with the connected element that baffler body 30 usefulness are made up of screw bolt and nut with loading and unloading.

In baffler body 30, as shown in Figure 2, store by the catalytic converter of being made up of the metal catalytic material 32, the discharge gas of deriving by outlet pipe 27 carries out oxidation reaction in this catalytic converter 32, become the gas of perfect combustion, be disposed in the atmosphere with the state that is cleaned.

In aforementioned vent systems, further import secondary air, just improved the gas cleaning effect of discharging by aforementioned catalytic converter 32.This secondary air is supplied with by secondary air supply described later from secondary air introducing port 34, this secondary air introducing port 34 be formed on outlet pipe 27 and internal-combustion engine 20 relief opening 26 attachment portions near.

The air-strainer 35 that aforementioned secondary air air supply system is used by vent systems, the safety check of forming by leaf valve 36, and they are coupled together and the secondary air supplying pipe 37 that they are connected on the aforementioned secondary air introducing port 34 is formed.Secondary air supplying pipe 37 is by connecting flexible rubber flexible pipe 38 with leaf valve 36 of air-strainer 35 that vent systems uses, being connected the flexible rubber flexible pipe 39 of leaf valve 36 sides of leaf valve 36 and secondary air introducing port 34 and the metal tube 40 of secondary air introducing port 34 sides constitutes.

Rubber hose 38 can freely be separated at

attachment portion

37a, 37b place, also has, and at the part 37d place that is connected with leaf valve 36, can freely install and remove with respect to this leaf valve 36.Rubber hose 39 also can freely be installed and removed with respect to this leaf valve 36 at the part 37e place that is connected with leaf valve 36.Also have, rubber hose 39 can freely be installed and removed at the 37c place, attachment portion of the roughly intermediate portion that is positioned at leaf valve 36 and secondary air introducing port 34 with metal tube 40.

Consisting of of the air-strainer 35 that aforementioned vent systems is used: make its air suction inlet 35a towards the front lower place, use the connected element of forming by screw bolt and nut 42 to be installed in the rear portion of the vertical fixing vertical installation sheet 41 of the cockscomb shape in the top of baffler main body portion 30 (referring to Fig. 4), the 35b of purifying chamber one side that its air cleaningization is indoor, be divided into two chambers with dividing plate 35c, this two Room is communicated with connecting tube 35d, the air that is filtered peace and quietization of device 35e enters this two Room, 35f comes out from outlet, imports rubber hose 38 parts of secondary air supplying pipe 37.

The connected element 44 that aforementioned leaf valve 36 usefulness are made up of screw bolt and nut is installed on two wrist 43a, the 43b that the substantially horizontal of the installation sheet 43 on the place ahead wide width part that is fixed in vertical installation sheet 41 stretches out.

And, the air-strainer 35 that these vent systems are used is heat insulation by muffler cover 45 and baffler body portion with leaf valve 36, this muffler cover 45 is assemblied in the groove 45a at its top on the 41a of welding foot of vertical installation sheet 41, separates certain distance, is contained on the baffler body portion 30.

Present embodiment 1 is owing to constitute as the front is said, and therefore, air-strainer 35 and leaf valve that vent systems is used all are arranged to expose from vehicle body cover 14, do not need to install and remove vehicle body cover 14 when its maintenance operation.

Also have, owing to can freely set shape, the capacity of the air-strainer 35 that vent systems uses, for example, make cylindrical shape, capacity is strengthened, the side of the 35b of purifying chamber that it is indoor is separated into a plurality of chambers of a series of connections, then can eliminate the exhaust sound of the internal-combustion engine 20 that reaches the air-strainer 35 that vent systems uses and the chatter of leaf valve 36 effectively.

Also have, because the air-strainer 35 used of vent systems is 30 swings of baffler body portion with the part of the internal-combustion engine unit 17 of swing all with leaf valve 36, so the each

several part

38,39,40 of the secondary air supplying pipe 37 that air-strainer 35, leaf valve 36 and secondary air introducing port 34 that vent systems is used are connected with each other needn't be made and can absorb produced by the swing of internal-combustion engine unit 17 flexible, the length and the whole length of its each

several part

38,39,40 can be done shortly.

Have again, be arranged on the baffler body portion 30 because the air-strainer 35 that vent systems is used is all concentrated with leaf valve 36, so whole secondary air-supply device can be very compact.

Also have and since leaf valve 36 be arranged to internal-combustion engine 20 from a distance, therefore, can not be subjected to the heat evil that produces by it.

Also have, because baffler body portion 30 is made and can freely be installed and removed with outlet pipe 27, so carry out baffler body portion 30, be located at secondary air-supply device (air-strainer 35, leaf valve 36 that vent systems is used) on this baffler body portion 30, during the maintenance operation of trailing wheel 21 etc., this baffler body portion 30 can be unloaded simultaneously with secondary air-supply device, and then trailing wheel 21 unloaded, easily carry out this operation.

Herein, because rubber hose 39 also can freely be installed and removed at attachment portion 37c place with respect to metal tube 40, so can be by this rubber hose 39 is taken off from metal tube 40, or by unclamping the connection at 37e place, attachment portion, this rubber hose 39 is taken off from leaf valve 36, and the secondary air-supply device on making baffler body portion 30 and being located at this baffler body portion 30 separates fully with vehicle.Like this, just can easily carry out aforementioned maintenance operation.

Also have, because that rubber hose 39 has is flexible, so, also can easily carry out aforementioned maintenance operation even foregoing baffler body portion 30 does not separate with vehicle fully with secondary air-supply device on being located at this baffler body portion 30.

Have again,,, fully purify the ground discharge so can make the many discharge gas perfect combustion of unburned composition of coming out by it with to the secondary air that vent systems is supplied with from two-cycle IC engine 20 because the metal catalytic material is built in the baffler body portion 30.

The following describes said one embodiment of the present of invention of claim 4 (second embodiment) of the application shown in Figure 5.

In present embodiment 2, the air-strainer 35 that the vent systems in the secondary air-supply device is used is arranged to air-strainer 23 front and back used with suction system and is arranged the connected element of ground by not shown employing bolts and nuts and be installed on the casing of power transmitting deice (variable v-belt drive) 22.Other constitutes owing to identical with embodiment 1, its detailed description of Therefore, omited.

Present embodiment 2 is owing to constituting as the front is said, so the air-strainer 35 that vent systems is used also can be power transmitting deice 22 swings with the part of the internal-combustion engine unit of swinging 17 in this occasion.Therefore, secondary air supplying pipe part (rubber hose) 38 that air-strainer 35 and the leaf valve 36 that vent systems is used couples together needn't be made and can absorb stretching by the swing generation of internal-combustion engine unit 17, its length can be done shortly, and then can make the whole length of secondary air supplying pipe short.

The following describes

claim

5 and 6 said one embodiment of the present of invention (the 3rd embodiment) of Fig. 6 and the application shown in Figure 7.

In present embodiment 3, air-strainer 23 shared air cleaning chamber 23a that air-strainer that the vent systems in the secondary air-supply device is used 35 and suction system are used and forming.Other structure is owing to identical with embodiment 1, so save its detailed description.Also have, 23e is an air suction inlet.

Present embodiment 3 is owing to constitute as the front is said, if make the front end of secondary air supplying pipe part (rubber hose) 38 pass the air-strainer 23 that suction system uses the inboard casing 23b and be attached thereto.Just can obtain the secondary air used through the vent systems that purifies,, not need the stay of independent air cleaner case and installation usefulness etc., can reduce the number of part so the formation of the air-strainer 35 that vent systems is used is very easy to.Also have, 23c is the outside box body of the air-strainer 23 used of suction system.

Also have, the air-strainer 35 that vent systems is used also can be air-strainer 23 swings that suction system is used with the part of the internal-combustion engine unit of swinging 17 in this occasion.Therefore, connecting air-strainer 35 that vent systems uses and secondary air supplying pipe part (rubber hose) 38 of leaf valve 26 needn't make and can absorb stretching by the swing generation of internal-combustion engine unit 17, its length can be done shortly, and then can make the whole length of secondary air supplying pipe 37 short.

The following describes

claim

7 and 8 said one embodiment of the present of invention (the 4th embodiment) of Fig. 8 and the application shown in Figure 9.

In present embodiment 4, different with embodiment 3, the air-strainer 23 that air-strainer 35 that the vent systems of secondary air-supply device uses and suction system are used separates separately air cleaning chamber 35g, 23d and forms.And these air cleaning chambers 35g, 23d have common air suction inlet 23e.23f is the upright dividing plate that is located at that common interior side box body 23b goes up and these two air cleaning chamber 35g, 23d are separated, and 23g strides across the filter that two air cleaning chamber 35g, 23d dispose.Because other formation is identical with embodiment, so save its detailed description.

Present embodiment 4 is owing to resemble the front and constitute said, thus can prevent to be used for cleaning internal combustion engines 20 discharge gas the supply vent systems secondary air supply and as the phase mutual interference between the primary air supply system of the air supply suction system of the burning usefulness of internal-combustion engine 20.

Also have, the formation of each air suction inlet of the air-strainer 23 that air-strainer 35 and the suction system that vent systems is used used is easy.

The following describes said one embodiment of the present of invention of claim 9 (the 5th embodiment) of the application shown in Figure 10.

In present embodiment 5, different with embodiment 4, aforementioned two air cleaning chamber 35g, 23d have air suction inlet 35h, 23h separately.For this reason, the interior side box body 23b by betwixt goes up the upright dividing plate 23i that establishes, the upright dividing plate 23i that establishes separates two air cleaning chamber 35g, 23d fully on common outer side box body 23c.

Also have, the filter 23k system that is used for the filter 35i of the air-strainer 35 that vent systems uses and is used for the air-strainer 23 that suction system uses is provided with respectively, and their end inside all is supported in the groove that forms in the opposite direction on the fore-end that is clamped in dividing plate 23i as shown in the figure.Other constitutes owing to identical with embodiment 4, so save its detailed description.

Present embodiment 5 is owing to constitute as the front is said, so can prevent the mutual interference mutually between secondary air supply and the primary air supply system.

The following describes said one embodiment of the present of invention of claim 10 (the 6th embodiment) of the application shown in Figure 11.

In present embodiment 6, different with embodiment 1 to embodiment 5, the air-strainer 35 that vent systems in the secondary air-supply device is used, utilize the space of the guard shield 47 of back vehicle frame 11, internal-combustion engine 20 and the sky between the vehicle body cover 14 and be configured in wherein, and be connected on the vehicle frame 11 of back by the connected element 46 that adopts screw bolt and nut etc.And, between the air-strainer 35 and leaf valve 36 that this vent systems is used, connect with secondary air supplying pipe part (rubber hose) 38.Other constitutes owing to identical with embodiment 1, so save its detailed description.

Present embodiment 6 is owing to constituting as the front is said, so the air-strainer 35 that vent systems can be used is fixedly mounted on the vehicle frame 11 of back.Also have, can not damage air-strainer 23 that baffler body portion 30 and suction system use around aesthetic appearance.

The following describes said one embodiment of the present of invention of claim 11 (the 7th embodiment) of Figure 12 and the application shown in Figure 13.

In present embodiment 7, different with embodiment 1 to 6, the air-strainer 35 in the secondary air-supply device is installed in the right side of the guard shield 47 of internal-combustion engine 20 by the connected element 48 that adopts screw bolt and nut.Other constitutes owing to identical with embodiment 1, so save its detailed description.

Also have, the cylinder portion of guard shield 47 topped internal-combustion engines 20, with fan from front or the cooling air that forms of left surface be taken into and mouthful attract an outside air, circulation guard shield 47 in forces to cool off the cylinder portion (not shown).

Present embodiment 7 is owing to constituting as the front is said, so the air-strainer 35 that vent systems is used can be with internal-combustion engine 20 swings.Therefore, secondary air supplying pipe part (rubber hose) 38 of the air-strainer 35 upper reed plate valves 36 that the connection vent systems is used needn't be made and can absorb produced by the swing of internal-combustion engine unit 17 flexible, its length can be done shortly, and then can make the whole length of secondary air supplying pipe 37 short.

Also have, because the air-strainer 35 that vent systems is used is located at and has the right side side of the guard shield 47 of baffler body portion 30 these side same side, so air-strainer 35 and the leaf valve 36 that vent systems can be used closely dispose, and can do whole secondary air-supply device compact.

The following describes said one embodiment of the present of invention of claim 12 (the 8th embodiment) of the application shown in Figure 14.

In present embodiment 8, different with embodiment 7, the air-strainer 35 that the vent systems in the secondary air-supply device is used is located on the outer wall of guard shield 47 of internal-combustion engine 20, with its formation one.

Therefore, the shell of the guard shield 47 of the interior side box body 35i of the air-strainer 35 used of vent systems and internal-combustion engine 20 forms.In order to be easy to carry out the installation and the maintenance of filter 351, outer side box body 35k forms as independent one.Other constitutes owing to identical with embodiment 7, so save its detailed description.

Present embodiment 8 is owing to constituting as the front is said, so form the air-strainer 35 that vent systems is used easily.Also have, owing to do not need independent air cleaner case and the stay of usefulness is installed, so number of parts can reduce.

The following describes said one embodiment of the present of invention (the 9th embodiment) in the

claim

12 and 13 of the application shown in Figure 15 to 17.

In present embodiment 9, different with embodiment 1 to 8, air-strainer that vent systems in the secondary air-supply device is used 35 and leaf valve 36 are installed in by the connected element (not shown) that adopts the stay that stretches out from vehicle frame 10 down and screw bolt and nut on the horizontal prolongation of following vehicle frame 10 of 3 bottoms, chassis.

And air-strainer 35 that vent systems is used and leaf valve 36 are connected to secondary air supplying pipe 37 on the secondary air introducing port 34 (referring to Figure 16) on the outlet pipe 27 that is formed on internal-combustion engine 20 and are configured in through near the suspension rod 18 of internal-combustion engine unit 17.

Also have, Figure 15 and Figure 16 shows that this device is used to have from the vertical line occasion of the equipment of small motor bicycle of the vertical engine 20 of configuration obliquely slightly backward Figure 17 shows that this device is used to have from horizontal line slightly toward the occasion of the equipment of small motor bicycle of the horizontal engine 20 of the ground configuration of rising.

In present embodiment 9, when the maintenance of carrying out air-strainer 35 that vent systems uses and leaf valve 36, can play cover 50 (Figure 15,17) to take off.

Present embodiment 9 is owing to constitute as the front is said, so the air-strainer 35 that vent systems can be used and leaf valve 36 centralized configuration are near the suspension rod 18 of internal combustion engine component 17, thus, can make the length of secondary air supplying pipe 37 short.Also have, can do whole secondary air-supply device compact.

Claims

1, a kind of device of the vent systems feeding secondary air to equipment of small motor bicycle, by the vent systems feeding secondary air of secondary air supplying pipe to equipment of small motor bicycle, the fore-end of this air supply pipe is connected with the air-strainer that vent systems is used and way insertion therein is installed with safety check; It is characterized in that the air-strainer that above-mentioned vent systems is used is located on the baffler.

2, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 1 is characterized in that aforementioned safety check is located on the aforementioned baffler.

3, a kind of device of the vent systems feeding secondary air to equipment of small motor bicycle, by the vent systems feeding secondary air of secondary air supplying pipe to equipment of small motor bicycle, the fore-end of this air supply pipe is connected with the air-strainer that vent systems is used, and the way is inserted safety check is installed therein, it is characterized in that above-mentioned safety check is located on the baffler.

4, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 3, it is characterized in that, be arranged on the casing of power transmitting deice before and after the air-strainer that air-strainer that aforementioned vent systems is used and suction system are used with arranging.

5, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 3 is characterized in that the air-strainer that air-strainer that aforementioned vent systems is used and aforementioned suction system are used forms.

6, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 5, it is characterized in that the shared air cleaning chamber of the air-strainer that air-strainer that aforementioned vent systems is used and aforementioned suction system are used and forming.

7, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 5, it is characterized in that, the air-strainer that air-strainer that aforementioned vent systems is used and aforementioned suction system are used, air cleaning chamber is separately separated and is formed.

8, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 7 is characterized in that aforementioned each air cleaning chamber has common air suction inlet.

9, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 7 is characterized in that aforementioned each air cleaning chamber has air suction inlet separately.

10, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 3 is characterized in that, the air-strainer that aforementioned vent systems is used is arranged on the vehicle frame of back.

11, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 3 is characterized in that the air-strainer that aforementioned vent systems is used is arranged on the guard shield of internal-combustion engine.

12, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 11 is characterized in that the air-strainer that aforementioned vent systems is used and the guard shield of internal-combustion engine form.

13, a kind of device of the vent systems feeding secondary air to equipment of small motor bicycle, by the vent systems feeding secondary air of secondary air supplying pipe to equipment of small motor bicycle, the front end of this air supply pipe is connected with the air-strainer that vent systems is used and way insertion therein is installed with safety check; It is characterized in that air-strainer that above-mentioned vent systems is used and safety check all are located at the bottom on chassis.

14, the device of the vent systems feeding secondary air to equipment of small motor bicycle as claimed in claim 13 is characterized in that, aforementioned secondary air supplying pipe is adapted near the suspension rod through the internal-combustion engine unit.

15, as the device of the described vent systems feeding secondary air to equipment of small motor bicycle of any one of claim 1 to 14, it is characterized in that, baffler partly is made up of baffler body and outlet pipe, and this baffler body and outlet pipe are partly made the structure that can freely install and remove.

16, as the device of the described vent systems feeding secondary air to equipment of small motor bicycle of any one of claim 1 to 15, it is characterized in that, aforementioned secondary air supplying pipe, it, couples together the metal tube of the flexible hose of aforementioned safety check one side and aforementioned this side of vent systems and forms between the aforementioned vent systems from aforementioned safety check.

17, as the device of the described vent systems feeding secondary air to equipment of small motor bicycle of any one of claim 1 to 16, it is characterized in that internal-combustion engine is a two-cycle IC engine, catalytic specie is built in the baffler.

18, as the device of the described vent systems feeding secondary air to equipment of small motor bicycle of any one of claim 1 to 17, it is characterized in that indoor strainer chamber one side of the air-strainer that aforementioned vent systems is used is separated into a plurality of chambers of a succession of connection and forms.