CN100417572C

CN100417572C - Motorcycle

Info

Publication number: CN100417572C
Application number: CNB2005100923667A
Authority: CN
Inventors: 竹中正彦; 小林宏治
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2004-09-29
Filing date: 2005-08-29
Publication date: 2008-09-10
Anticipated expiration: 2025-08-29
Also published as: KR100697000B1; CN1754769A; ITTO20050560A1; KR20060050724A; JP4414316B2; JP2006096200A; TWI265238B; TW200610888A

Abstract

The invention relates to a motorbike, wherein, a turning handle is convertibly supported at the front end of a motorbike frame for carrying an engine, and riding seats are at least arranged on a motorbike cover used for covering the engine and the motorbike frame, at the same time, a leg passing space which is approximately in a U-shape viewed from the side face is arranged between the riding seats and the turning handle, and the enough space which can be flexible freely is ensured below the lowest part of a pedal space to improve the design freedom degree. In an inspiration system 48A which is provided with a throttle body (50) and is connected with the engine EA, at least the throttle body (50) is arranged above the lowest part (72a) of the leg passing space (72).

Description

Motor bike

Technical field

The present invention relates to motor bike, it can turn to twelve Earthly Branches to forward to handle at the vehicle body frame front end that carries driving engine, and on the car body cover that covers above-mentioned driving engine and vehicle body frame, be provided with at least and use seat by bus, simultaneously, be formed be configured in this by bus with between seat and the above-mentioned steering tiller, the side is seen as roughly that the shank of U word shape passes through the space.

Background technology

This motor bike for example by patent documentation 1 as can be known.

Patent documentation 1:(Japan) spy opens the 2004-116426 communique

In above-mentioned patent documentation 1 in the disclosed device, below by the shank of the hood-shaped one-tenth of the car body lowest part by the space, dispose the air gulp system tb that links to each other with driving engine, because appurtenanceies such as the tube portion of tb and metal filament classes, and be difficult to below the lowest part of shank by the space, to guarantee the space that freely to apply flexibly.

Summary of the invention

The present invention is in light of this situation and produces that its purpose is, a kind of motor bike is provided, and guarantees the sufficient space that can freely apply flexibly, raising design-calculated degree of freedom below the lowest part of shank by the space.

For achieving the above object, first aspect present invention provides a kind of motor bike, can turn to twelve Earthly Branches to forward at the vehicle body frame front end that carries driving engine to handle, and on the car body cover that covers described driving engine and vehicle body frame, be provided with at least and use seat by bus, simultaneously, formation be configured in this by bus with between seat and the described steering tiller, the side is seen as roughly that the shank of U word shape passes through the space, it is characterized in that having tb, be disposed at the top of described shank by the lowest part in space with tb at least in the air gulp system that described driving engine links to each other.

Second aspect present invention is on the basis of above-mentioned first aspect, and described driving engine has header arrangement in the cylinder portion of described shank by the rear of the lowest part in space.

Third aspect present invention connects the aspirate tube of upstream extremity along width over sides of car body direction each cylinder arranged side by side having on the described driving engine of a plurality of cylinders on the basis of above-mentioned first aspect, connect tb at the upstream extremity of each aspirate tube.

Fourth aspect present invention is on the basis of the above-mentioned third aspect, and the upstream extremity of a plurality of described aspirate tubes is common to be connected on the concetrated pipe, connects described tb on this concetrated pipe.

Fifth aspect present invention the above-mentioned the 3rd or the basis of fourth aspect on, described driving engine is a V-type engine, it comprises: the rear portion bore section, it is in the rear configuration header of described shank by the lowest part in space; Anterior bore section constitutes roughly vee shape between itself and this rear portion bore section, be disposed at described tb under.

Sixth aspect present invention is on the basis of above-mentioned first aspect, and described air gulp system has the place ahead that is disposed at described tb, simultaneously, the upper end be disposed at tb the top and with tb bonded assembly airfilter.

According to the invention described above first aspect, by being configured in the top of shank with the tb at least of driving engine bonded assembly air gulp system by the lowest part in space, can below the lowest part of shank by the space, guarantee the sufficient space that freely to apply flexibly to improve Design freedom.

According to second aspect present invention, at least one bore section that driving engine has is because with the rear of its header arrangement at the lowest part of shank by the space, so the space that can guarantee to dispose this bore section parts in addition below the lowest part of shank by the space.

According to third aspect present invention, because the upstream extremity of the aspirate tube of each cylinder of driving engine is disposed side by side along the width over sides of car body direction, be disposed at the tb of top that shank passes through the lowest part in space so can spatially dispose efficiently.

According to fourth aspect present invention,, can reduce number of components by a plurality of aspirate tubes are connected with common tb.

According to fifth aspect present invention, by pass through the front side of the lowest part in space at shank, the part in the space in vehicle body frame disposes anterior bore section, can improve the performance of motor bike, simultaneously, guarantees to dispose the sufficient space of air gulp system.

According to sixth aspect present invention, can guarantee the gulp capacity of airfilter, simultaneously, dispose air gulp system efficiently, shank can be guaranteed as the high space of Design freedom by the space in the place ahead of the lowest part in space.

Description of drawings

Fig. 1 is the lateral plan of the motor bike of first embodiment;

Fig. 2 is the amplification vertical profile lateral plan of motor bike front portion;

Fig. 3 is the amplification vertical profile lateral plan at motor bike rear portion;

Fig. 4 is the 4-4 line section-drawing of Fig. 3;

Fig. 5 is the lateral plan of the motor bike of second embodiment;

Fig. 6 is the amplification vertical profile lateral plan of motor bike front portion.

Nomenclature

11 steering tillers

48A, 48B air gulp system

49,49F, 49R aspirate tube

50 tbs

51 airfilters

53 concetrated pipes

65 car body covers

71 use seat by bus

72 shanks pass through the space

The 72a shank is by the lowest part in space

The C bore section

The anterior bore section of CF

CR rear portion bore section

EA, EB driving engine

The F vehicle body frame

The specific embodiment

Below, based on embodiments of the invention shown in the drawings example of the present invention is described.

Fig. 1 Fig. 4 represents first embodiment of the invention, and Fig. 1 is the lateral plan of motor bike, and Fig. 2 is the amplification vertical profile lateral plan of motor bike front portion, and Fig. 3 is the amplification vertical profile lateral plan at motor bike rear portion, and Fig. 4 is the 4-4 line section-drawing of Fig. 3.

At first, among Fig. 1, the vehicle body frame F of this motor scooter has: head pipe 12, and it can support front fork 10 that is used for axle supporting front-wheel WF and the steering tiller 11 that is connected in this front fork 10 with turning to; Pair of right and left bypass pipe 13, it extends to the back lower place from this head pipe 12; Manage 14 under the pair of right and left, it simultaneously, extends to the back lower place than two bypass pipes, 13 gradients being connected with below these bypass pipes 13 on above-mentioned head pipe 12 biglyyer; Pair of right and left is responsible for 15, and it rearward extends from these pars intermedias of managing 14 down, and simultaneously, the lower end of above-mentioned two bypass pipes 13 is connected with in the intermediate portion; Pair of right and left seat guide rail 16, it extends to the back upper place from being responsible for 15 pars intermedia; Manage 17 after the pair of right and left, extend to the back upper place its rear end from the above-mentioned person in charge 15, and be incorporated into the rear portion of seat guide rail 16, in the part of the forward end of the double-type bypass pipe 13 in the left and right sides and be provided with first strengthening part 18 between the leading section of pipe 14 down, between the pars intermedia of being responsible for 15 rear end and seat guide rail 16, second reinforcing member 19 is set.

Refer again to Fig. 2 and Fig. 3, the later half rake 15b that the above-mentioned person in charge 15 extends by the preceding half rake 15a that will extend to the back upper place from the pars intermedia of above-mentioned down pipe 14 with to the back lower place and heave crooked upward and link between the front end of the rear end of preceding half rake 15a and later half rake 15b bonded assembly curve 15c and fuse and constitute, by welding, be connected with the lower end of above-mentioned bypass pipe 13 at the pars intermedia of preceding half rake 15a.

On vehicle body frame F, carry by 4 two-stroke engine EA and engine installation PA that the variable-speed motor M of the output variable speed of this driving engine EA is constituted for driving trailing wheel WR.Above-mentioned driving engine EA is the water cooled with bore section C of 2 cylinders arranged side by side that rise upward from crankcase 20, and it has: cylinder band 21, and it combines with crankcase 20; Cylinder cover 22, it is combining with cylinder band 21 with crankcase 20 opposite sides; Cylinder cover hood 23, its top with cylinder cover 22 combines.

But, near the rear end of the bypass pipe 13 of above-mentioned vehicle body frame F, on above-mentioned two person in charges' 15 preceding half rake 15a, be provided with first engine lifting bracket 24, bore section C the place ahead in above-mentioned driving engine EA, on first engine lifting bracket 24, bore section C is disposed at above-mentioned two and is responsible between 15 the curve 15c with the upper support of crankcase 20.In addition, engage the engine lifting bracket carriage 25 that extends is downwards arranged managing 14 lower end down, on second engine lifting bracket 28 of the lower end that is fastened on this engine lifting bracket carriage 25 by

bolt

26,26, utilize the bottom that bolt 27 is fastening and support above-mentioned crankcase 20.

Like this, can driving engine EA be bearing in two by the high part of rigidity is responsible on 15, and, the pair of bolts of the extended line of first engine lifting bracket 24 by clipping above-mentioned bypass pipe 13 line of centerss from both sides fastening is arranged on two and is responsible on 15 the preceding half rake 15a, the fastening of bolt 30 on the extended line of the line of centers of the crankcase 20 of above-mentioned driving engine EA by being disposed at above-mentioned bypass pipe 13 is bearing on first engine lifting bracket 24, can be effectively and further improve and rigidly crankcase 20 is bearing on first engine lifting bracket 24.

On right side along the working direction of motor bike, on above-mentioned crankcase 20, link gearbox 31, in this gearbox 31, take in for example variable-speed motor M of Belt-type Adjustable-speed machine that comprises that is delivered to trailing wheel WR side behind the rotary power stepless change that is used for driving engine EA.

The output shaft 32 of variable-speed motor M is outstanding from the left surface of gearbox 31, and the leading section of the swing arm 33 of rearward end axle supporting wheels WR can be supported on the above-mentioned gearbox 31 around the axis swing of above-mentioned output shaft 32.In addition,, on the axletree 37 of trailing wheel WR, be fixed with driven sprocket 35 from the outstanding protrusion fixed drive sprocket wheel 34 of the gearbox 31 of above-mentioned output shaft 32, with annular link chain 36 around hanging on drive sprocket 34 and the driven sprocket 35.

Be provided with a pair of carriage 38 that extends upward at the rear portion of above-mentioned gearbox 31, these carriages 38 are supported on is responsible for 15 rearward end.In addition, be provided with pair of brackets in the rear side bottom of gearbox 31, support main supports 41 with being situated between on the carriage 39 by the coaxial main support axle 40 rotatable earth's axis at these supports with carriage 39.In addition, be responsible between 15 the curve 15c above-mentioned two and set up cross pipe 42, between this cross pipe 42 and the buffering of being located at above-mentioned swing arm 33 front portions are with carriage 43, the posterior bumper 44 that has along the axis of front and back extension is set.

The air gulp system 48A of driving engine EA has: the aspirate tube 49 of each cylinder, its downstream end are connected in the leading flank of the cylinder cover 22 of bore section C, forwards extend; Tb 50, its common upstream extremity that is connected aspirate tube 49; Airfilter 51, it is connected in this tb 50, above-mentioned aspirate tube 49 downstream end near the connecting portion of cylinder cover 22, fuel injection valve 52 is installed on cylinder cover 22.

And the upstream extremity of two aspirate tubes 49 is set up in parallel along the width over sides of car body direction, and the concetrated pipe 53 of common connection two aspirate tubes 49 upstream extremities is connected in tb 50.In addition, airfilter 51 forwards disposes from above-mentioned tb 50, and its upper end is positioned at the top than tb 50.

In the place ahead of above-mentioned driving engine EA, and below above-mentioned airfilter 51, dispose the radiator 54 that is used to cool off at the heated engine cooling water of watercooled engine EA.The side-prominent installation arm 55 of the engine lifting bracket carriage that has towards vehicle body frame F 25 is set in the bottom of this radiator 54, and this installations arm 55 is situated between and is bearing on the carriage 56 of being located at engine lifting bracket carriage 25 by supporting yielding rubber 57.In addition, the side-prominent installation arm 58 of following pipe 14 above it is set on the top of radiator 54, supports described installation arm 58 by not shown supporting yielding rubber being located to be situated between on the carriage 59 of pipe 14 down.That is, radiator 54 is supported on the following pipe 14 and engine lifting bracket carriage 25 of vehicle body frame F.

The freeing pipe 61 that upstream extremity is connected the rear side of cylinder cover 22 among the bore section C of driving engine EA extends to the left side of crankcase 20 and gearbox 31 from cylinder cover 22, above the foot of driving engine EA and main support axle 40 above, slip into the rear portion of gearbox 31, towards right lateral bending, be connected with the exhaust muffler 63 that is disposed at trailing wheel WR right side.

With reference to Fig. 1, engine installation PA, utilize the car body cover 65 that constitutes by synthetic resin to cover with the driving engine EA bonded assembly air gulp system 48A of this engine installation PA and vehicle body frame F, this car body cover 65 has: front shroud 66, and it covers the front portion of head pipe 12 and the top of front-wheel WF; Central cover 67, it covers head pipe 12 from rear side, is connected with front shroud 66; Pair of right and left leg guard 68, it is engaged in the left and right sides of above-mentioned front shroud 66, covers occupant foot the place ahead; Floor tunnel portion 69, it links to each other with two leg guards 68 and central cover 67; Back cover 70, the left and right sides at its covering body framework F rear portion.

Can be provided with series type by bus with seat 71 on back cover 70, it takes the vehicle driver who controls steering tiller 11, simultaneously, can take co-driver at vehicle driver's rear with opening and closing.Utilize the central cover 67 of car body cover 65, with the back-connected floor tunnel portion 69 of this central cover 67, be provided with above-mentionedly by bus with the back cover 70 of seat 71, the side sees that roughly the foot-operated space 72 of U font is configured in above-mentioned by bus with between seat 71 and the steering tiller 11.

But the major part of the air gulp system 48A that links to each other with driving engine EA is disposed at the front side in above-mentioned foot-operated space 72, and the tb at least 50 among this air gulp system 48A is disposed at the top of the lowest part 72a in above-mentioned foot-operated space 72.In addition, the head of the bore section C of driving engine EA is the rear that cylinder cover hood 23 is disposed at the lowest part 72a in foot-operated space 72.

With reference to Fig. 4, above-mentioned by bus with seat 71 below configuration by this by bus with the base plate 73 of seat 71 can open and close the containing box 74 of closed upper end peristome, this containing box 74 is supported by the above-mentioned person in charge 15 and seat guide rail 16.

Posterior bumper 44 tops that containing box 74 is disposed between the cross pipe 42 and swing arm 33 of being located at vehicle body frame F, extend front and back, two side lower part settings at containing box 74 are disposed at posterior bumper 44 both sides, the 74a of the portion that hangs down, the 74a that hang down downwards, hang down between the 74a of portion, the 74a two, form the axis that makes above-mentioned posterior bumper 44 in the bottom of containing box 74 and hang down the foots of the 74a of portion, 74a by the top position and with its housing recess of taking in 75 than above-mentioned two.

Containing box 74 can increase the capacity of containing box 74 by forming as mentioned above, for example can with sun shield 76 upward injection (ジエ Star ト) the type helmet 77 under the open mode be accommodated in the containing box 74.

In addition, dispose can open by bus at the rear of containing box 74 and carry out gas filed Fuel Tank 78 with seat 77, this Fuel Tank 78 is situated between and is supported on the

frame support bracket

79,79 at each a pair of rear portion that is arranged on back pipe 17 by supporting yielding

rubber

80,80.

The following describes the effect of this first embodiment, form on the car body cover 65 be disposed at by bus with seat 71 and steering tiller 11 between, the side is seen as the roughly foot-operated space 72 of U font, have tb 50, with air gulp system 48A that driving engine EA links to each other at least tb 50 be configured in the top of the lowest part 72a in foot-operated space 72, so can guarantee the sufficient space that freely to apply flexibly, raising Design freedom at the lowest part 72a in foot-operated space 72 following.

And, the airfilter 51 that air gulp system 48A has is disposed at the place ahead of tb 50, simultaneously, the upper end is disposed at the top of tb 50, be connected with tb 50, therefore, can be in the gulp capacity of guaranteeing airfilter 51, dispose air gulp system 48A efficiently, the space in lowest part 72a the place ahead that can guarantee foot-operated space 72 is as the high space of Design freedom.

In addition, driving engine EA is because the rear configuration header that has at the lowest part 72a in foot-operated space 72 is the bore section C of cylinder-cover jacket 23, so can guarantee to dispose for example space of the parts relevant with aspirate tube 49 and fuel injection valve 52 of bore section C parts in addition below the lowest part 72a in foot-operated space 72.

In addition, on two Cylinder engine EA, connect the aspirate tube 49 of upstream extremity along width over sides of car body direction each cylinder arranged side by side, and the upstream extremity at two aspirate tubes 49 connects tb 50, therefore, can above the lowest part 72a that rides space 72, spatially dispose tb 50 efficiently, in addition, with the common concetrated pipe 53 that is connected of the upstream extremity of two aspirate tubes 49, and on this concetrated pipe 53, connect tb 50, therefore, can reduce number of components by a plurality of aspirate tubes 49 are connected on the common tb 50.

And, the airfilter 51 that air gulp system 48A has is disposed at the place ahead of tb 50, simultaneously, the upper end is disposed at the top of tb 50, be connected with tb 50, therefore, can be in the gulp capacity of guaranteeing airfilter 51, dispose air gulp system 48A efficiently, the space in the place ahead of lowest part 72a that can guarantee foot-operated space 72 is as the high space of Design freedom.

In addition, be to support swingably on the gearbox 31 of engine installation PA leading section, between the swing arm 33 of rearward end axle supporting wheels WR and vehicle body frame F, the posterior bumper 44 that extends along fore-and-aft direction be set simultaneously, the containing box 74 that will cover this posterior bumper 44 from the top is configured in the below of using seat 71 by bus, and at the rear of this containing box 74 configuration Fuel Tank 78.

Like this, by at the rear of containing box 74 configuration Fuel Tank 78, can in the car body cover 65 in the place ahead in foot-operated space 72, guarantee the sufficient space that freely to apply flexibly can improve Design freedom, simultaneously, also can increase the capacity of Fuel Tank 78.

And, by from above cover the containing box 74 of posterior bumper 44 two side lower part settings be disposed at the 74a of the portion that hangs down, the 74b of posterior bumper 44 both sides, also can increase the capacity of containing box 74.

Fig. 5 is the lateral plan of the motor bike of second embodiment of the invention, and Fig. 6 is the amplification vertical profile lateral plan of this motor bike front portion, and the part of above-mentioned first embodiment of correspondence is only used identical reference marks diagram, omits detailed explanation.

On vehicle body frame F, be to drive trailing wheel WR, and carry by 4 two-stroke engine EB and engine installation PB that the variable-speed motor M of the output variable speed of this driving engine EB is constituted.

Above-mentioned driving engine EB is a water cooled two cylinder vee-type driving engine for example, and it has: crankcase 20; Rear portion bore section CR, it is erect upward from crankcase 20; Anterior bore section CF, it forwards extends and this rear portion bore section CR formation V-arrangement from crankcase 20, has the cylinder barrel axis that leans forward to the front upper place slightly, and two bore section CF, CR have respectively:

cylinder band

21F, 21R, it combines with crankcase 20;

Cylinder cover

22F, 22R, it is combining with

cylinder band

21F, 21R with crankcase 20 opposite sides; Cylinder cover hood 23, it is in the combination of the top of

cylinder cover

22F, 22R.

The head of above-mentioned bore section C is the rear that cylinder cover hood 23 is disposed at the lowest part 72A in the foot-operated space 72 that is formed by car body cover 65.In addition, in the place ahead of the rear portion of driving engine EB bore section CR, with the upper support of crankcase 20 on first engine lifting bracket 24, the below of bore section CF forwardly, with the lower support of above-mentioned crankcase 20 on second engine lifting bracket 28.

The air gulp system 48B of driving engine EB has:

aspirate tube

49F, 49R, and it forwardly reaches between rear portion bore section CF, the CR, and its downstream end is connected the side of cylinder cover 22F, the 30R of these bore section CF, CR; Tb 50, it is disposed at the top of the lowest part 72a in the foot-operated space 72 that is formed by car body cover 65, simultaneously, with common connection of upstream extremity of two

aspirate tube

49F, 49R; Airfilter 51, it is connected with this tb 50, near

cylinder cover hood

22F, 22R bonded assembly connecting portion,

fuel injection valve

52F, 52R is installed on each

cylinder cover

22F, 22R in the downstream end of above-mentioned

aspirate tube

49F, 49R.

And, the cylinder cover 22R bonded assembly aspirate tube 49R of downstream end and rear portion bore section CR forwards extends from rear portion bore section CR, the cylinder cover 22F bonded assembly aspirate tube 49R of downstream end and anterior bore section CF extends upward from anterior bore section CF, and the upstream extremity of two

aspirate tube

49F, 49R disposes side by side along the width over sides of car body direction.And, the common concetrated pipe 53 that is connected in of the upstream extremity of two

aspirate tube

49F, 49R, this concetrated pipe 53 is connected with mono-tb 50 directly over being disposed at anterior bore section CF.In addition, airfilter 51 forwards disposes from above-mentioned tb 50, and its upper end is positioned at the top of tb 50.

The exhaust system 60 of driving engine EB has: freeing pipe 61F, and its upstream extremity is connected with the lower side of the cylinder cover 22F of anterior bore section CF, rearward extends below engine installation PB; Freeing pipe 61R, its upstream extremity is connected with the rear side of the cylinder cover 22R of rear portion bore section CR; Set freeing pipe 62, itself and common linking to each other of downstream end of these freeing

pipes

61F, 61R; Exhaust muffler 63, it is disposed at the right side of trailing wheel WR, is connected with set freeing pipe 62.

The freeing pipe 61F of anterior bore section CF bends to roughly C word shape downwards from cylinder cover 22F, rearward extend below by above-mentioned engine installation PB, rear at engine installation PB rises formation on the right side of trailing wheel WR, take in the housing recess 64 on the top at least of above-mentioned freeing pipe 61F in the diapire setting of the gearbox 31 of the part of the case that constitutes above-mentioned engine installation PB.Thus, can make freeing pipe 61F more be disposed at the top, thus, guarantee the minimum ground Clearance, engine installation PB is configured in more lower position, can realize the low center of gravityization of motor scooter near engine installation PB.

In addition, the freeing pipe 61R of rear portion bore section CF is arranged side by side at the above-mentioned freeing pipe 61F of the rear of main support axle 40 and anterior bore section CF, slips into the rear portion of gearbox 31 from the left side of crankcase 20 and is bent to form.Promptly, the freeing pipe 61R of rear portion bore section CF extends to the left side of crankcase 20 and gearbox 31 from cylinder cover 22R, above driving engine EB foot, and above main support axle 40, around the rear portion of going into gearbox 31, towards right lateral bending, form side by side at the rear of above-mentioned main support axle 40 and the above-mentioned freeing pipe 61F of anterior bore section CF.

The common connection of downstream end of set freeing pipe 62 and the two freeing pipe 61F, the 61R that dispose side by side at the rear side of engine installation PB, the freeing pipe 61R that makes above-mentioned rear portion bore section CR side around go into gearbox 31 rear portions begin bent position above, connect the upstream extremity of exhaust muffler 63 in the downstream end of set freeing pipe 62.

In addition, identical with first embodiment, below by bus with seat 71, dispose by the containing box 74 that can open and close ground closed upper end peristome by bus with the base plate 73 of seat 71, two side lower parts of this containing box 74 be arranged on the both sides that are disposed at the posterior bumper 44 below this containing box 74 and vertical below the 74a of the portion that hangs down, at the rear of containing box 74 configuration Fuel Tank 78.

According to this second embodiment, above the lowest part 72a in the foot-operated space 72 that is formed at car body cover 65, be configured in the top of the lowest part 72a in foot-operated space 72 with the tb at least 50 among the air gulp system 48B that driving engine EB links to each other, so can guarantee the sufficient space that freely to apply flexibly can improve Design freedom at the lowest part 72a in foot-operated space 72 following.

In addition, driving engine EB is a V-type engine, and it has: rear portion bore section CR, its head are the rear that cylinder cover hood 23R is disposed at the lowest part 72a in foot-operated space 72; Anterior bore section CF, form roughly vee shape between itself and this rear portion bore section CR, be disposed at tb 50 under, therefore, can below the lowest part 72a in foot-operated space 72, guarantee to dispose parts except that the bore section CR of rear portion for example about the parts of aspirate tube 49R and fuel injection valve 52R, and, by front side at the lowest part 72a that rides space 72, the part in the space in car body cover 65 disposes anterior bore section CF, can improve the performance of motor bike, simultaneously, can guarantee to dispose the sufficient space of air gulp system 48B.

And, owing on V-type 2 cylinder engine EB, connect the aspirate tube 49F of upstream extremity along width over sides of car body direction each cylinder arranged side by side, 49R, at each aspirate tube 49F, the upstream extremity of 49R connects tb 50, therefore, on the lowest part 72a that rides space 72, can spatially dispose tb 50 efficiently, in addition, because with each aspirate tube 49F, the upstream extremity of 49R and 53 common connections of concetrated pipe, and on this concetrated pipe 53, connect tb 50, so can be by making a plurality of

aspirate tube

49F, 49R is connected with common tb 50, reduces number of components.

In addition, be configured in the below of using seat 71 by bus owing to will cover the containing box 74 of posterior bumper 44 from the top, and at the rear of this containing box 74 configuration Fuel Tank 78, so can in the car body cover 65 in the place ahead in foot-operated space 72, guarantee the sufficient space that freely to apply flexibly, improve Design freedom, simultaneously, also can increase the capacity of Fuel Tank 78.

And, by from above cover the containing box 74 of posterior bumper 44 two side lower part settings be disposed at the 74a of the portion that hangs down of posterior bumper 44 both sides, also can increase the capacity of containing box 74.

Embodiments of the invention more than have been described, but have the invention is not restricted to the foregoing description, on the basis of the present invention of the scope that does not break away from claim, can carry out various design modifications.

Claims

1. motor bike, carrying driving engine (EA, EB) vehicle body frame (F) front end can turn to twelve Earthly Branches to forward to handle (11), and covering described driving engine (EA at least, EB) and the car body cover (65) of vehicle body frame (F) go up to be provided with by bus with seat (71), simultaneously, formation is configured in this by bus with between seat (71) and the described steering tiller (11), the formation side is seen as roughly, and the shank of U word shape passes through space (72), it is characterized in that having tb (50), with described driving engine (EA, EB) air gulp system (48A of Xiang Lianing, 48B) at least tb (50) be disposed at the top of the lowest part (72a) of described shank by space (72).

2. motor bike as claimed in claim 1 is characterized in that, described driving engine (EA, EB) has header arrangement in the bore section (C, CR) of described shank by the rear of the lowest part in space (72).

3. motor bike as claimed in claim 1, it is characterized in that, go up to connect upstream extremity along the aspirate tube of width over sides of car body direction each cylinder arranged side by side (49,49F, 49R) having the described driving engine of a plurality of cylinders (EA, EB), connect tb (50) at the upstream extremity of each aspirate tube (49,49F, 49R).

4. motor bike as claimed in claim 3 is characterized in that, the upstream extremity and common connection of concetrated pipe (53) of a plurality of described aspirate tubes (49,49F, 49R) are gone up at this concetrated pipe (53) and to be connected described tb (50).

5. motor bike as claimed in claim 3 is characterized in that, described driving engine (EB) is a V-type engine, and it comprises: rear portion bore section (CR), and it is in the rear configuration header of described shank by the lowest part (72a) in space (72); Anterior bore section (CF), its be disposed at described tb (50) under, constitute roughly vee shape between itself and this rear portion bore section (CR).

6. motor bike as claimed in claim 1, it is characterized in that described air gulp system (48A, 48B) has the place ahead that is disposed at described tb (50), simultaneously, the upper end is disposed at the top of tb (50), with tb (50) bonded assembly airfilter (51).