WO2020021776A1

WO2020021776A1 - Saddled vehicle

Info

Publication number: WO2020021776A1
Application number: PCT/JP2019/015068
Authority: WO
Inventors: 洪太中内; 浩平横内; 浩二朗鈴木; 正之長岡
Original assignee: 本田技研工業株式会社
Priority date: 2018-07-26
Filing date: 2019-04-05
Publication date: 2020-01-30
Also published as: CN112512908B; PH12020552233A1; CN112512908A; JPWO2020021776A1; JP6982184B2; BR112020027086A2

Abstract

Provided is a saddled vehicle in which a fuel pump can be effectively disposed on the vehicle body. A fuel tank is disposed above a rear wheel 16, and a fuel pump 28 is disposed below the fuel tank. The fuel pump 28 is disposed such that the longitudinal direction thereof is aligned with the front-rear direction of the vehicle and the center axis 28x thereof is offset to one side with respect to the centerline 85 of the vehicle in a plan view. The fuel pump 28 is disposed above an air cleaner 53.

Description

Saddle-type vehicle

The present invention relates to a straddle-type vehicle.

BACKGROUND ART Conventionally, as a straddle-type vehicle, there has been known a scooter-type vehicle having a unit swing engine, in which a fuel pump is disposed outside a fuel tank separately from a fuel tank (for example, see Patent Document 1).
This straddle-type vehicle includes a fuel tank behind a storage box.

JP 2009-40417 A

In a straddle-type vehicle as disclosed in Patent Document 1, it is necessary to arrange the fuel pump below the fuel tank in order to smoothly supply the fuel from the fuel tank to the fuel pump.
However, since a space is required below the fuel tank for the rear wheels to move up and down, it is difficult to arrange the fuel pump in this space. Further, since a continuously variable transmission, an air cleaner, an exhaust device, and the like of a unit swing engine are disposed on both sides of the rear wheel in the vehicle width direction, it is difficult to dispose the fuel pump in the space on both sides of the rear wheel in the vehicle width direction. Therefore, it is required to effectively dispose the fuel pump on the vehicle body.
An object of the present invention is to provide a straddle-type vehicle in which a fuel pump can be effectively disposed on a vehicle body.

This specification includes the entire contents of Japanese Patent Application No. 2018-140558 filed on July 26, 2018.
The present invention provides a power unit (14) swingably supported by a vehicle body frame (11), and a rear wheel (16) provided integrally with the power unit (14) and driven by the power unit (14). A fuel tank (27) is disposed above the rear wheel (16), and a fuel pump (28) is disposed below the fuel tank (27). ), The longitudinal direction is arranged in the vehicle front-rear direction, and the center axis (28x) of the fuel pump (28) extends in front and rear through the center in the vehicle width direction in a plan view. ), An air cleaner (53) is connected to the unit swing engine (38), and the fuel pump (28) is located above the air cleaner (53). Characterized in that it is location.

In the above invention, at least a part of the fuel pump (28) may be arranged so as not to overlap with the rear wheel (16) in plan view.
Further, in the above invention, the length in the longitudinal direction of the fuel pump (28) is the vehicle width direction inner end portion (24d) of the pair of left and right frame members (24) constituting the vehicle body frame (11) in plan view. Is longer than the distance in the vehicle width direction from the vehicle width direction outer end portion (16a) of the rear wheel (16), and the fuel pump (28) is mounted on the vehicle of the frame member (24) on one side in the vehicle width direction. The rear wheel (16) may be disposed between a width-direction inner end (24d) and a vehicle width-direction outer end (16a) of the rear wheel (16).

In the above invention, a rear cushion unit (55) may be arranged behind the fuel pump (28).
Further, in the above invention, a rear fender (72) that covers the rear wheel (16) from above is disposed below the fuel tank (27), and the fuel pump (28) is attached to the rear fender (72). A pump mounting part (72b) may be provided, and the pump mounting part (72b) may be arranged above or to the side of the air cleaner (53).

Further, in the above invention, there is provided a canister (95) for storing the evaporated fuel generated in the fuel tank (28), and the canister (95) is located below the fuel tank (27) in the longitudinal direction in the vehicle front-rear direction. The canister (95) is arranged so as not to overlap with the rear wheel (16) in a plan view, and at least a part of the canister (95) is overlapped with the fuel pump (28) in a side view. May be.

In the above invention, the air cleaner (53) may be provided with a relief portion (79a) for securing a gap with the fuel pump (28).
Further, in the above invention, the fuel pump (28) is disposed on the same side as the side where the side stand (73) is provided in the vehicle width direction with respect to the vehicle body center line (85) extending in the front-rear direction through the vehicle width direction center. It may be provided.
In the above invention, the fuel pump (28) may be arranged on one side in the vehicle width direction with respect to the vehicle body center line (85), and the canister (95) may be arranged on the other side.

The fuel pump of the saddle-ride type vehicle according to the present invention is arranged such that the longitudinal direction is arranged in the vehicle front-rear direction, and the center axis of the fuel pump extends in the front-rear direction through the vehicle width direction center in plan view. The air cleaner is connected to the unit swing engine, and the fuel pump is located above the air cleaner. By offsetting the fuel pump to one side, the fuel pump can be arranged avoiding the vertical movement space of the rear wheel, and the fuel pump can be arranged using the space above the air cleaner. The pump can be effectively placed on the vehicle body.

In the above invention, at least a part of the fuel pump is arranged so as not to overlap with the rear wheel in plan view, so that it is possible to suppress an increase in the size of the saddle-ride type vehicle in the vertical direction.
In the above invention, the length of the fuel pump in the longitudinal direction is a vehicle width from a vehicle width direction inner end of a pair of left and right frame members constituting the vehicle body frame in a plan view to a vehicle width direction outer end of a rear wheel. Longer than the distance in the vehicle direction, the fuel pump is disposed between the vehicle width direction inner end of the frame member on one side in the vehicle width direction and the vehicle width direction outer end of the rear wheel. By arranging the frame member between the inner end in the vehicle width direction and the outer end of the rear wheel in the vehicle width direction, the fuel pump can be more effectively arranged even if the longitudinal length of the fuel pump is long. .

In the above invention, since the rear cushion unit is arranged behind the fuel pump, the fuel pump can be protected from behind by the rear cushion unit.
Further, in the above invention, a rear fender that covers the rear wheel from above is disposed below the fuel tank, the rear fender has a pump mounting portion to which a fuel pump is mounted, and the pump mounting portion is located above or to the side of the air cleaner. Since the pump mounting portion is provided, the pump mounting portion can be provided on the existing rear fender, and the cost can be reduced as compared with the case where the pump mounting portion is provided on a special member.

Further, in the above invention, a canister for storing the evaporated fuel generated in the fuel tank is provided, and the canister is disposed below the fuel tank in a longitudinal direction in the vehicle front-rear direction, and does not overlap with the rear wheel in plan view. And at least a part of the canister is arranged so as to overlap the fuel pump in a side view, so that the fuel pump and the canister can be effectively arranged on the vehicle body.

Further, in the above invention, since the air cleaner is provided with a relief portion for securing a gap with the fuel pump, interference between the fuel pump and the air cleaner can be prevented.
Further, in the above invention, the fuel pump is provided on the same side as the side stand provided in the vehicle width direction with respect to the vehicle body center line extending in the front-rear direction through the vehicle width direction center. The fuel can be easily supplied from the fuel tank to the fuel pump.
In the above invention, the fuel pump is arranged on one side in the vehicle width direction with respect to the vehicle body center line, and the canister is arranged on the other side, so that the weight balance of the vehicle body in the vehicle width direction can be improved.

FIG. 1 is a left side view showing the motorcycle according to the first embodiment of the present invention. FIG. 2 is a left side view (first embodiment) showing a rear portion of the motorcycle. FIG. 3 is a plan view (first embodiment) showing a rear portion of the motorcycle. FIG. 4 is a plan view (first embodiment) showing a main part of FIG. 3. FIG. 5 is a cross-sectional view (first embodiment) showing the support structure of the fuel pump and the canister by the rear fender. FIG. 6 is a cross-sectional view (first embodiment) showing a support structure of a fuel pump and a canister by a rear fender according to a modified example. FIG. 7 is a plan view showing the arrangement of the fuel pump according to the second embodiment. FIG. 8 is a cross-sectional view (second embodiment) showing the front part of the vehicle body.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the description, directions such as front and rear, left and right, and up and down are the same as directions with respect to the vehicle body unless otherwise specified. In addition, the reference numeral FR shown in each drawing indicates the front of the vehicle, the reference UP indicates the upper part of the vehicle, and the reference LH indicates the left of the vehicle.
<First embodiment>
FIG. 1 is a left side view showing a motorcycle 10 according to a first embodiment of the present invention, and FIG. 2 is a left side view showing a rear part of the motorcycle 10 (first embodiment).
As shown in FIGS. 1 and 2, the motorcycle 10 includes a body frame 11, a front fork 12, a front wheel 13, a power unit 14, and a rear wheel 16.
The front wheel 13 is supported by a front end of the body frame 11 via a front fork 12. The power unit 14 is a unit swing type that is swingably supported at the rear of the body frame 11. The rear wheel 16 is supported at a rear end of the power unit 14.
The motorcycle 10 is a scooter-type straddle-type vehicle provided with a seat 17 on which an occupant sits straddling.

The body frame 11 includes a head pipe 21, a down frame 22, a pair of left and right lower frames 23, and a pair of left and right rear frames 24.
The head pipe 21 forms a front end of the body frame 11, and the front fork 12 is supported by the head pipe 21 so as to be steerable. The down frame 22 extends downward and obliquely rearward from the head pipe 21. The left and right lower frames 23 extend downward and rearward from the lower left and right of the down frame 22, respectively.
Left and right rear frames 24 integrally extend from rear ends of the left and right lower frames 23.

The rear frame 24 includes an inclined portion 24a extending obliquely rearward and upward from the rear end of the lower frame 23, and a rear extending portion 24b integrally extending rearward from the rear end of the inclined portion 24a.
A storage box 26 and a fuel tank 27 arranged below the seat 17 are supported by the rear frame 24. An opening is provided in the upper part of the storage box 26, and this opening is opened and closed by the seat 17 swingably attached to the storage box 26. The fuel tank 27 is arranged behind the storage box 26 and above the rear wheel 16. Further, a fuel pump 28 is disposed below a front part of the fuel tank 27.

A bar handle 31 is attached to an upper end of the front fork 12, and a front wheel 13 is supported at a lower end via an axle 32.
The power unit 14 is swingably supported by the left and right rear frames 24 via a link mechanism 34. Specifically, one end of the link mechanism 34 is connected to support plates 36 provided on the left and right rear frames 24, respectively, and the upper part of the power unit 14 is connected to the other end of the link mechanism 34.
The power unit 14 includes an engine 38 that forms a front part, and a continuously variable transmission 39 that is provided integrally with a rear part of the engine 38.
The engine 38 includes a crankcase 41 and a cylinder portion 42 extending obliquely upward and forward from a front portion of the crankcase 41. The cylinder portion 42 includes a cylinder head 44, and an intake device 46 is connected to an upper surface of the cylinder head 44, and an exhaust device (not shown) is connected to a lower surface of the cylinder head 44.

The continuously variable transmission 39 includes a transmission case 48 integrally located at the rear end of the crankcase 41 and located on one side (left side) of the rear wheel 16. The transmission case 48 accommodates a pair of drive pulleys and driven pulleys, and a belt stretched over each of the drive pulleys and driven pulleys. The drive pulley is provided on the crankshaft (not shown) side of the engine 38, and the driven pulley is provided on the rear wheel 16 side, and is driven from the engine 38 to the rear wheel 16 via the drive pulley, the belt and the driven pulley. Power is transmitted.
An output shaft 51 is provided at the rear end of the continuously variable transmission 39, and the rear wheel 16 is attached to the output shaft 51. An air cleaner 53 is mounted on the upper part of the transmission case 48. A rear cushion unit 55 as a shock absorber is passed between the rear end of the transmission case 48 and the rear frame 24 on one side (left side).

The periphery of the body frame 11, the front fork 12, and the bar handle 31 are covered with a body cover 60.
The body cover 60 includes a handle cover 61, a front cover 62, a front inner cover 63, a pair of left and right leg shields 64, a floor step 66, a pair of left and right side skirts 67, and a pair of left and right body side covers 68.
The handle cover 61 covers the center of the bar handle 31. The front cover 62 covers the upper part of the front fork 12 and the head pipe 21 from the front. The front inner cover 63 covers the upper part of the front fork 12 and the head pipe 21 from behind. The left and right leg shields 64 extend outward from both side edges of the front inner cover 63 in the vehicle width direction and are connected to both side edges of the front cover 62, and cover the driver's legs from the front.

The floor step 66 is a portion on which the driver places his / her foot, extends rearward from the lower edges of the front inner cover 63 and the left and right leg shields 64 to cover the left and right lower frames 23 from above. The left and right side skirts 67 extend downward from both edges of the floor step 66 to cover the left and right lower frames 23 from both sides. The left and right body side covers 68 cover the lower part of both sides of the seat 17.
Grab rails 69 are provided on the upper rear portions of the left and right body side covers 68 to be held by passengers.
The front wheel 13 is covered with a front fender 71 from above, and the rear wheel 16 is covered with a rear fender 72 from above.
A side stand 73 is provided at a lower portion of the body frame 11 and on one side (left side) in the vehicle width direction with respect to a vehicle center line 85 (see FIG. 3) extending in the front-rear direction through the center in the vehicle width direction. I have.

FIG. 3 is a plan view showing the rear part of the motorcycle 10 (first embodiment). FIG. 4 is a plan view (first embodiment) showing a main part of FIG. 3 and shows a state where the fuel tank 27 and the rear fender 72 (see FIG. 1) are removed from FIG.
As shown in FIGS. 3 and 4, a cross frame 75 extending in the vehicle width direction is passed between the left and right front ends 69a, 69a of the grab rail 69 between the left and right rear frames 24. The fuel tank 27 (specifically, a flange portion 27a formed on the periphery of the fuel tank 27) is attached to the left and right rear frames 24 behind the cross frame 75.
The fuel tank 27 has a fuel supply port 27b and a cap 77 covering the fuel supply port 27b at the rear, and a fuel gauge 78 for measuring the remaining amount of fuel at the front.
An air cleaner 53 is disposed at a position extending from one side (left side) to the front of the fuel tank 27 so as to maintain a vertical distance from the fuel tank 27. The air cleaner 53 forms a part of the intake device 46.

The intake device 46 includes a throttle body 82 connected to the cylinder head 44 via an intake pipe 81, and an air cleaner 53 connected to the throttle body 82 via a connecting tube 83.
The intake pipe 81 and the throttle body 82 are arranged on a vehicle body center line 85 extending in the front-rear direction through the center in the vehicle width direction. In the air cleaner 53, a connection portion 53a to which the connecting tube 83 is connected is disposed behind the throttle body 82 and between the vehicle body center line 85 and the rear frame 24 on one side (left side). Accordingly, the connecting tube 83 extends from the rear end of the throttle body 82 obliquely to the rear one side (left side) and is connected to the connection portion 53 a of the air cleaner 53.

The air cleaner 53 includes an air cleaner case main body 79 to which the connecting tube 83 is connected, and an air cleaner case cover 80 attached outside the air cleaner case main body 79 in the vehicle width direction.
Above the air cleaner case main body 79, the fuel pump 28 is disposed.
The grab rail 69 includes a rail rear portion 69b extending in the vehicle width direction, and a pair of left and right rail side portions 69c extending obliquely outward and forward integrally from left and right ends of the rail rear portion 69b.
Each of the left and right rail side portions 69c is provided with an inward extending portion 69d extending inward in the vehicle width direction. The left and right inwardly extending portions 69d are fastened to the left and right rear frames 24 (specifically, brackets (not shown) attached to the left and right rear frames 24) with a plurality of bolts 87.

The fuel pump 28 is disposed below a front portion of the fuel tank 27 and supplies the fuel in the fuel tank 27 to a fuel injection valve 88 attached to the intake device 46 (specifically, the intake pipe 81).
The fuel pump 28 includes a main body 28h having a pump main body for sucking and discharging the fuel, an electric motor for driving the pump main body, and a fuel filter for filtering the sucked fuel. The longitudinal direction of the main body 28h is , Arranged in the front-back direction. In other words, the fuel pump 28 (specifically, the center axis 28x of the rotating shaft of the electric motor of the fuel pump 28) is disposed in the front-rear direction.

The main body 28h of the fuel pump 28 is provided with an inlet pipe connection port 28a, a supply pipe connection port 28b, and a return pipe connection port 28c.
An introduction pipe 101 (see FIG. 5) for introducing fuel from the fuel tank 27 to the fuel pump 28 is connected to the introduction pipe connection port 28a.
A supply pipe 102 (see FIG. 5) for supplying fuel from the fuel pump 28 to the fuel injection valve 88 is connected to the supply pipe connection port 28b.
A return pipe 103 (see FIG. 5) for returning excess fuel to the fuel tank 27 when fuel is introduced from the fuel tank 27 to the fuel pump 28 by the introduction pipe 101 is connected to the return pipe connection port 28c. .

The fuel pump 28 (specifically, the main body 28h of the fuel pump 28) includes a vehicle width direction inner end 24d of the rear frame 24 on one side (left side) and a vehicle width direction outer end of the rear wheel 16 in plan view. 16a. Portions of the inlet pipe connection port 28a and the return pipe connection port 28c of the fuel pump 28 overlap the rear wheel 16.
Assuming that the longitudinal length of the fuel pump 28 is L, and the distance between the vehicle width direction inner end 24d of the rear frame 24 on one side (left side) and the vehicle width direction outer end 16a of the rear wheel 16 is R, The length L of the fuel pump 28 is larger than the distance R between the rear frame 24 and the rear wheel 16 (L> R).
In this way, by setting L> R, the longitudinal direction of the fuel pump 28 is not directed in the vehicle width direction but in the front-rear direction, and the vertical direction of the rear wheel 16 accompanying the vertical swing of the power unit 14 (see FIG. 1) is increased. The fuel pump 28 (specifically, the main body 28h) can be arranged so as to avoid the movement area.
Further, since the inlet pipe connection port 28a and the return pipe connection port 28c of the fuel pump 28 are inclined obliquely inward and upward from the main body 28h in the vehicle width direction, they are arranged so as to overlap the rear wheel 16 in plan view. Even if it does, the rear wheel 16 can be arranged avoiding the vertical movement area.

On one side (left side) of the rear frame 24 (specifically, a bracket attached to the rear frame 24), a cushion support portion 91 that supports the upper end portion 55a of the rear cushion unit 55 is provided. The upper end 55 a of the rear cushion unit 55 is attached to the cushion support 91 so as to be swingable by a bolt 93.
The fuel pump 28 is disposed in front of the rear cushion unit 55. Thereby, the fuel pump 28 can be protected from behind by the rear cushion unit 55.

On the other side (right side) of the rear wheel 16, a canister 95 for temporarily storing the evaporated fuel generated in the fuel tank 27 is arranged. Further, the canister 95 is disposed inward of the rear frame 24 on the other side (right side) in the vehicle width direction. That is, the canister 95 is arranged between the rear wheel 16 and the rear frame 24 on the other side in the vehicle width direction in plan view.
The canister 95 includes a cylindrical canister body 95h, and a central axis 95a of the canister body 95h extends in the front-rear direction. The rear end face 95b of the canister body 95h is disposed generally above the output shaft 51 of the rear wheel 16 (see FIG. 1).
The rear end face 95b of the canister 95 is provided with a charge pipe connection port 95c and a purge pipe connection port 95d, and the front end face 95e is provided with a fresh air introduction pipe connection port 95f and a drain pipe connection port 95g.

The charge tube 105 (see FIG. 5) is connected to the charge tube connection port 95c. The charge pipe 105 extends to the vicinity of the fuel supply port 27b of the fuel tank 27, and introduces the fuel vapor in the fuel tank 27 into the canister 95.
The purge pipe 106 (see FIG. 5) is connected to the purge pipe connection port 95d. The purge pipe 106 extends to the intake device 46 (specifically, the throttle body 82) of the engine 38, and guides the fuel vapor adsorbed on the activated carbon in the canister 95 to the intake device 46.

The fresh air introduction pipe 107 (see FIG. 5) is connected to the fresh air introduction pipe connection port 95f. The fresh air introduction pipe 107 is a pipe that introduces fresh air into the canister 95 from the opened distal end. By taking fresh air into the canister 95, the fuel vapor is released from the activated carbon and can be supplied to the intake device 46.
The drain pipe 108 (see FIG. 5) is connected to the drain pipe connection port 95g. The drain pipe 108 is a pipe for discharging liquid such as moisture accumulated in the canister 95 to the outside, and is disposed at a lower part of the vehicle body and discharged from an open end.

As described above, at least a part of the fuel pump 28 is arranged so as not to overlap the rear wheel 16 in a plan view, so that the motorcycle 10 as a straddle-type vehicle is prevented from being enlarged in the vertical direction. can do.
The length L in the longitudinal direction of the fuel pump 28 is equal to the vehicle width of one of the rear frames 24 (the rear frame 24 on one side in the vehicle width direction) as a pair of left and right frame members constituting the body frame 11 in plan view. It is longer than the distance R in the vehicle width direction from the inner end 24d in the vehicle direction to the outer end 16a of the rear wheel 16 in the vehicle width direction. The fuel pump 28 is disposed between a vehicle width direction inner end 24 d of the rear frame 24 on one side in the vehicle width direction and a vehicle width direction outer end 16 a of the rear wheel 16.
According to this configuration, by disposing the fuel pump 28 between the vehicle width direction inner end 24 d of the rear frame 24 and the vehicle width direction outer end 16 a of the rear wheel 16, the longitudinal direction of the fuel pump 28 is Even if the length L is long, the fuel pump 28 can be arranged more effectively.

Further, as shown in FIGS. 2 and 4, the rear cushion unit 55 is disposed behind the fuel pump 28, so that the fuel pump 28 can be protected by the rear cushion unit 55 from behind.
Also, as shown in FIGS. 1 and 4, the fuel pump 28 is positioned on the same side as the side stand 73 is provided in the vehicle width direction with respect to the vehicle body center line 85 extending in the front-rear direction through the vehicle width direction center. Is provided.
According to this configuration, fuel can be easily supplied from the fuel tank 27 to the fuel pump 28 even when the side stand 73 is used.

FIG. 5 is a cross-sectional view (first embodiment) showing the support structure of the fuel pump 28 and the canister 95 by the rear fender 72, and is a view cut perpendicular to the vehicle body center line 85 (see FIG. 3). FIG. 6 is a cross-sectional view (first embodiment) showing a support structure of the fuel pump 28 and the canister 95 by the rear fender 121 of the modified example, and is a view cut perpendicular to the vehicle body center line 85 (see FIG. 3). is there. In FIG. 6, the same components as those in the embodiment of FIG. 5 are denoted by the same reference numerals, and detailed description will be omitted.
As shown in FIG. 5, a rear fender 72 is disposed below the fuel tank 27, and the fuel pump 28 and the canister 95 are supported by the rear fender 72.
An introduction pipe 101, a supply pipe 102, and a return pipe 103 are connected to the introduction pipe connection port 28a, the supply pipe connection port 28b, and the return pipe connection port 28c of the fuel pump 28, respectively.
The charge pipe connection port 95c (see FIG. 4), the purge pipe connection port 95d (see FIG. 4), the fresh air introduction pipe connection port 95f, and the drain pipe connection port 95g of the canister 95 have a charge pipe 105, a purge pipe 106, The fresh air introduction pipe 107 and the drain pipe 108 are connected.

The rear fender 72 includes a flat portion 72a and a pump mounting portion 72b formed at an end of the flat portion 72a on one side (left side) of the vehicle body center vertical line 100 extending vertically through the center in the vehicle width direction.
The flat portion 72a is located above the rear wheel 16 (see FIG. 4). The pump mounting portion 72b is provided at a position deviated from above the rear wheel 16, is formed one step lower than the flat portion 72a, and prevents interference when the rear wheel 16 moves to the rear fender 72 side.
The bottom wall 72c of the pump mounting portion 72b is separated from the escape portion 79a formed on the upper portion of the air cleaner 53 (specifically, the air cleaner case main body 79) by a distance R1 upward and a distance R2 inward in the vehicle width direction. I have.
The fuel pump 28 is mounted on the pump mounting portion 72b with a plurality of bolts (not shown). The canister 95 is attached to the flat portion 72a of the rear fender 72 via a bracket (not shown).

As shown in FIG. 6, a rear fender 121 which is a modification of the rear fender 72 (see FIG. 5) is arranged below the fuel tank 27, and the rear fender 121 supports the fuel pump 28 and the canister 95.
The rear fender 121 includes a flat portion 72a and a pump mounting portion 121b formed at an end of the flat portion 72a on one side (left side) of the vehicle body center vertical line 100 extending vertically through the center in the vehicle width direction.
The pump mounting portion 121b is a portion that extends vertically and is disposed inside the air cleaner 53 in the vehicle width direction.

The fuel pump 28 is mounted on the pump mounting portion 121b from outside in the vehicle width direction by a plurality of bolts (not shown).
The fuel pump 28 attached to the pump attachment portion 121b is separated from the escape portion 79a of the air cleaner 53 (specifically, the air cleaner case main body 79) by a distance R1 upward and a distance R3 inward in the vehicle width direction.
In this manner, by supporting the fuel pump 28 from the side with the rear fender 121, the escape portion 79a of the air cleaner 53 can be formed small, and the capacity of the air cleaner 53 can be further increased.

As shown in FIGS. 1, 4 and 5, the motorcycle 10 as a saddle-ride type vehicle is provided integrally with a power unit 14 swingably supported by a body frame 11 and the power unit 14. And a rear wheel 16 driven by the power unit 14.
A fuel tank 27 is disposed above the rear wheel 16, and a fuel pump 28 is disposed below the fuel tank 27.
The fuel pump 28 has a longitudinal direction oriented in the vehicle front-rear direction, and a center axis 28x of the fuel pump 28 is aligned with a vehicle body center line 85 extending in the front-rear direction through the center in the vehicle width direction in plan view. It is arranged offset to the side. An air cleaner 53 is connected to the power unit 14 (specifically, the engine 38), and the fuel pump 28 is disposed above the air cleaner 53.

According to this configuration, the fuel pump 28 whose longitudinal direction is oriented in the vehicle front-rear direction is offset to one side with respect to the vehicle body center line 85, so that the fuel pump 28 is arranged so as to avoid the vertical movement space of the rear wheel 16. It becomes possible to do. Further, since the fuel pump 28 can be arranged by utilizing the space above the air cleaner 53, the fuel pump 28 can be effectively arranged on the vehicle body. This can prevent the motorcycle 10 from being enlarged in the vertical direction and the vehicle width direction.

As shown in FIGS. 5 and 6,

rear fenders

72 and 121 that cover the rear wheel 16 from above are disposed below the fuel tank 27, and the

rear fenders

72 and 121 are pump mounting portions to which the fuel pump 28 is mounted. 72b and 121b. The

pump mounting portions

72b and 121b are arranged above or beside the air cleaner 53.
According to this configuration, the

pump mounting portions

72b and 121b can be provided on the existing rear fender, and the cost can be reduced as compared with providing the pump mounting portion on a special member.

Further, as shown in FIGS. 2, 4 and 5, the motorcycle 10 includes a canister 95 for storing the evaporated fuel generated in the fuel tank 27. The canister 95 is arranged below the fuel tank 27 with its longitudinal direction facing the vehicle front-rear direction, and is arranged so as not to overlap with the rear wheel 16 in plan view. At least a part of the canister 95 is arranged to overlap the fuel pump 28 in a side view.
According to this configuration, the fuel pump 28 and the canister 95 can be effectively arranged on the vehicle body.

Further, as shown in FIG. 5, the air cleaner 53 is provided with a relief portion 79a for securing a gap with the fuel pump 28.
According to this configuration, interference between the fuel pump 28 and the air cleaner 53 can be prevented.
The fuel pump 28 is arranged on one side in the vehicle width direction with respect to the vehicle body center line 85, and the canister 95 is arranged on the other side.
According to this configuration, the weight balance of the vehicle body in the vehicle width direction can be improved.

<Second embodiment>
FIG. 7 is a plan view showing the arrangement of the fuel pump 28 according to the second embodiment.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
The fuel pump 28 is disposed forward of the cylinder portion 42 of the engine 38 (see FIG. 1), above the cylinder portion 42, and forward of the upper cross frame 131 that connects the left and right rear frames 24. . The longitudinal direction of the fuel pump 28 is arranged toward the vehicle width direction.
The fuel pump 28 is disposed between the left and right rear frames 24, and is disposed above the lower cross frame 133 that is disposed forward of the upper cross frame 131 and connects the left and right rear frames 24. .

A vehicle width center line 130 drawn in the center of the body portion 28h of the fuel pump 28 in the vehicle width direction is disposed on one side (left side) in the vehicle width direction with respect to the vehicle body center line 85.
The introduction pipe connection port 28a, the supply pipe connection port 28b, and the return pipe connection port 28c of the fuel pump 28 are disposed in front of one side end (left end) of the cylinder section 42 in plan view. Thereby, the pipes (the introduction pipe 101, the supply pipe 102, and the return pipe 103 shown in FIG. 8) connected to the introduction pipe connection port 28a, the supply pipe connection port 28b, and the return pipe connection port 28c pass through the side of the cylinder portion 42. To the fuel tank 27 (see FIG. 2).

FIG. 8 is a cross-sectional view (second embodiment) showing a front portion of the vehicle body, and is a cross-sectional view taken vertically along a vehicle body center line 85.
A box-shaped battery storage section 135 is provided below the floor step 66, and the battery 136 is stored in the battery storage section 135.
The fuel pump 28 is disposed behind the battery housing 135 and below the rear end 66 a of the floor step 66 and the front end 68 a of the body side cover 68.
The cylinder part 42 of the engine 38 is inclined forward, and the fuel pump 28 is disposed in a space 138 formed obliquely below and in front of the cylinder part 42 (specifically, a head cover 45 constituting the cylinder part 42).

The storage box 26 arranged above the power unit 14 (see FIG. 1) has an opening at the top, and this opening is opened and closed by the seat 17 (see FIG. 1).
The lower front part of the storage box 26 is supported by the upper cross frame 131.
The fuel pump 28 is attached to the lower cross frame 133 via a pump bracket 141.
By arranging the fuel pump 28 in the space 138 below the floor step 66 and obliquely below and in front of the cylinder portion 42 of the engine 38, the dead space at the lower part of the vehicle body can be effectively used. Can be made more compact.

The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
The present invention is not limited to the case where the present invention is applied to the motorcycle 10, but is also applicable to a straddle-type vehicle that includes other than the motorcycle 10.

10 Motorcycle (saddle-type vehicle)
DESCRIPTION OF SYMBOLS 11 Body frame 14 Power unit 16 Rear wheel 16a Outer end in vehicle width direction 24 Rear frame (frame member)
24d Vehicle width direction inner end 27 Fuel tank 28 Fuel pump 28x Center axis 53 Air cleaner 72b Pump mounting part 73 Side stand 79a Escape part 85 Body center line

Claims

A power unit (14) swingably supported by the body frame (11); and a rear wheel (16) provided integrally with the power unit (14) and driven by the power unit (14). In a straddle-type vehicle in which a fuel tank (27) is disposed above a rear wheel (16) and a fuel pump (28) is disposed below the fuel tank (27),
The fuel pump (28) has a longitudinal direction arranged in the vehicle front-rear direction, and a central axis (28x) of the fuel pump (28) extends in the front-rear direction through the center in the vehicle width direction in plan view. It is arranged to be offset to one side with respect to the vehicle body center line (85),
An air cleaner (53) is connected to the power unit (14), and the fuel pump (28) is disposed above the air cleaner (53).
The straddle-type vehicle according to claim 1, wherein at least a part of the fuel pump (28) is arranged so as not to overlap with the rear wheel (16) in a plan view.
The length of the fuel pump (28) in the longitudinal direction is determined from the vehicle width direction inner ends (24d) of the pair of left and right frame members (24) constituting the vehicle body frame (11) in a plan view. ) Is longer than the distance in the vehicle width direction up to the vehicle width direction outer end portion (16a), and the fuel pump (28) is provided on one side in the vehicle width direction of the frame member (24). The saddle-ride type vehicle according to claim 1 or 2, wherein the vehicle is disposed between the rear end (24d) and the outer end (16a) in the vehicle width direction of the rear wheel (16).
The straddle-type vehicle according to any one of claims 1 to 3, wherein a rear cushion unit (55) is disposed behind the fuel pump (28).
A rear fender (72, 121) that covers the rear wheel (16) from above is disposed below the fuel tank (27), and the rear fender (72, 121) is a pump mounting to which the fuel pump (28) is mounted. The pump mounting part (72b, 121b) has a part (72b, 121b), and is arranged above or at the side of the air cleaner (53). A saddle-ride type vehicle according to the item.
A canister (95) for storing evaporative fuel generated in the fuel tank (28); the canister (95) is disposed below the fuel tank (27) in a longitudinal direction in a vehicle front-rear direction; It is arranged so as not to overlap with the rear wheel (16) in plan view, and at least a part of the canister (95) is arranged so as to overlap with the fuel pump (28) in side view. A saddle-ride type vehicle according to any one of claims 1 to 5.
The straddle-type vehicle according to claim 6, wherein the air cleaner (53) is provided with a relief portion (79a) for securing a gap with the fuel pump (28).
The fuel pump (28) is provided on the same side as the side stand (73) where the side stand (73) is provided in the vehicle width direction with respect to the vehicle body center line (85) extending in the front-rear direction through the vehicle width direction center. The saddle-ride type vehicle according to claim 6 or 7, wherein
The fuel pump (28) is disposed on one side in the vehicle width direction with respect to the vehicle body center line (85), and the canister (95) is disposed on the other side. The straddle-type vehicle according to one of the preceding claims.