JP4753745B2 - Intake structure of motorcycle - Google Patents

Description

  The present invention relates to an intake structure for a motorcycle including a fuel injection device and an air cleaner.

Conventionally, the main pipe extends from the head pipe to the rear of the vehicle body, the middle frame extends from the main pipe toward the pivot plate portion that pivots the swing arm that supports the rear wheel, and the fuel injection device is provided in front of the middle frame. Motorcycles are known. In this type of motorcycle, an air cleaner is connected to the rear of the fuel injection device, and the air cleaner is disposed across the middle frame in a side view (see, for example, Patent Document 1).
JP 2002-295344 A

  However, in the conventional configuration, since the air cleaner is disposed across the middle frame in a side view, when the air cleaner is to be removed from the engine integrally with the fuel injection device, the air cleaner is removed from the upper side of the vehicle body or in the longitudinal direction of the vehicle body. There must be. When attempting to remove the fuel tank above the vehicle body, since the fuel tank is located above, it is necessary to remove the fuel tank by removing the fuel hose, harness and the like from the fuel tank. Further, since an engine or the like is present in front of the fuel injection device or behind the air cleaner, it is difficult to remove the air cleaner and the fuel injection device integrally in the longitudinal direction of the vehicle body.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an intake structure for a motorcycle that facilitates the attachment and detachment of an air cleaner and a fuel injection device.

In order to solve the above-described problems, the present invention is directed to a pivot plate portion (35 ) that has a main pipe (31) that extends from the head pipe (30) to the rear of the vehicle body and that pivots a swing arm (8) that supports the rear wheel (9). ) , The middle frame (32) extends from the main pipe (31), and in the intake structure of the motorcycle having the fuel injection device (70) in front of the middle frame (32) , the fuel injection device (70) continuously provided an air cleaner (80) to the rear, and an inclined surface backplate trailing edge (82A) which has along the middle to the frame (32) in front of a position from the middle frame (32) of the air cleaner (80), The air cleaner (80) is parallel to the plurality of air funnels (85) connected to the fuel injection device (70) and a row of the air funnels (85), and below the air funnel (85). A cylindrical air filter (86) to be disposed, and an outside air introduction unit (87) accommodated side by side with the air filter (86) are provided, and the outside air introduction unit (87) includes the outside air introduction unit (87). ) Has an outside air introduction port (87A) for introducing outside air into the inside, and supplies outside air introduced from the outside air introduction port (87A) to the inside of the air filter (86). The outside air introduction port (87A) The back plate (82A) of the air cleaner opens flush with the back plate (82A), and the air cleaner (80) can be attached to and detached from the engine (6) from the side of the vehicle body integrally with the fuel injection device (70). In addition, a detachable cover (88) is provided on the side of the air cleaner (80), and the air filter (86) is detachable by removing the cover (88) .
According to the present invention, the air cleaner is connected to the rear of the fuel injection device, the rear end of the air cleaner is positioned in front of the middle frame, and the air cleaner can be attached to and detached from the engine from the side of the vehicle body integrally with the fuel injection device. In addition, the air cleaner and the fuel injection device can be easily attached and detached, and the assembling property and the maintenance property can be improved.

Moreover, according to the said structure, since an air cleaner is provided with the cylindrical air filter arrange | positioned in parallel below the row | line | column of an air funnel, the front-back length of an air cleaner can be shortened. In addition, a removable cover is provided on the side of the air cleaner, and the air filter can be attached and detached by removing this cover, so the air cleaner can be easily attached and removed from the side of the vehicle body even when the air cleaner is installed on the vehicle body. Maintainability can be improved.

A mount (82B) is integrally formed at the rear lower part of the air cleaner (80) along the middle frame (32), and the air cleaner (80) is connected to the middle frame (32) through the mount (82B). ) May be supported.
The air cleaner (80) is inclined in such a direction that the back plate (82A) is away from the front plate (81A) at the front end of the air cleaner (80) so as to move downward, and the inner space is increased in the front-rear direction as it goes downward. You may make it form in the box shape which becomes wide.
The air filter (86) may be formed in a modified cross section that extends downward along the inclination of the back plate (82A) of the air cleaner (80).
The engine (6) includes a cylinder block (41), a cylinder head (42), and a head cover (43) that extend substantially upward from a front portion of the crankcase (40), and the cylinder block (41), cylinder head (41), a head cover (41), and a space that opens to the side of the vehicle body are formed between the middle frame, and through this space, the air cleaner (80) is integrated with the fuel injection device (70) on the vehicle body side. The engine (6) may be detachable from the side.
In this case, at the position of the row of the air funnels (85) , the left and right widths of the air cleaner (80) may be formed wider than the widths of the other portions. According to this configuration, the space for installing the air cleaner can be saved, and the space efficiency can be improved.

In the present invention, an air cleaner is continuously provided behind the fuel injection device, the rear end of the air cleaner is positioned in front of the middle frame, and the air cleaner can be attached to and detached from the engine from the side of the vehicle body integrally with the fuel injection device. And the fuel injection device can be easily attached and detached, and the assembling property and the maintenance property can be improved.
In addition, the air cleaner is equipped with a cylindrical air filter that is arranged below and parallel to the air funnel row, and a detachable cover on the side of the air cleaner. The air filter can be removed by removing this cover. Therefore, the front and rear length of the air cleaner can be shortened, and the air cleaner can be easily attached and detached from the side of the vehicle body even when the air cleaner is installed on the vehicle body, thereby improving the maintainability of the air filter.
Further, since the width of the air cleaner is formed wider than the width of the other portions at the position of the air funnel row, the space for installing the air cleaner can be saved, and the space efficiency can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the description, descriptions of directions such as front and rear, left and right, and top and bottom are for the vehicle body.
FIG. 1 is a side view showing the overall configuration of the motorcycle according to the present embodiment. The motorcycle 1 includes a body frame 2, a pair of left and right front forks 3 rotatably supported on a front portion of the body frame 2, and a steering handle 4 attached to a top bridge 3 </ b> A of the front fork 3. The front wheel 5 rotatably supported by the front fork 3, the engine 6 supported by the vehicle body frame 2 at the approximate center of the vehicle body, the radiator 7 disposed in front of the engine 6, the rear end of the engine 6 and the vehicle body A swing arm 8 that is swingably supported by the frame 2, a rear wheel 9 that is rotatably supported by the rear end of the swing arm 8, and a rear portion of the swing arm 8 and the vehicle body frame 2. The left and right rear cushions 10 disposed, a fuel tank 11 disposed at the top of the vehicle body frame 2, and a seat 12 disposed behind the fuel tank 11 are provided. That.

  A bracket 13 is attached between the top bridge 3 </ b> A and the bottom bridge 3 </ b> B of the front fork 3, and a headlight 14, a blinker 15, and meters 16 are attached to the bracket 13. A rear cowl 17, a grab rail 18 and a rear fender 19 are attached to the rear part of the vehicle body frame 2, a taillight 21 and a winker 22 are attached to the rear fender 19, and a main stand is attached to the lower part of the vehicle body frame 2. 25 is attached.

As shown in FIG. 2, the vehicle body frame 2 includes a pair of left and right main pipes 31 extending rearward from the head pipe 30 and a pivot plate portion 35 that pivots the swing arm 8 that supports the rear wheel 9. A pair of left and right middle frames 32 extending obliquely downward from the vehicle body 31 and a pair of left and right down tubes 33 extending from the head pipe 30 below the main pipe 31 downward to the vehicle body and extending rearward of the vehicle body are provided.
The down tube 33 extends rearward of the vehicle body, and then extends obliquely upward of the vehicle body toward the pivot plate portion 35, and the pivot plate portion 35 is joined to the down tube 33 and the middle frame 32. A pair of left and right seat rails 37 are connected to the part.
The seat rail 37 is supported at the front end by a cross member 36 disposed between the upper portions of the middle frame 32 and extends rearward of the vehicle body to support the seat 12 and the rear cowl 17. In addition to the cross member 36, a cross member (not shown) is appropriately disposed in the vehicle body frame 2, and the rigidity of the vehicle body frame 2 is enhanced by these cross members.

  The middle frame 32 and the down tube 33 are each provided with an engine hanger 39, and the engine 6 is supported via the engine hanger 39. As a result, the engine 6 is supported such that the main pipe 31 is located above it, the middle frame 32 is located behind it, and the down tube 33 is located in front and below it. It is supported in a gap surrounded by the pipe 31, the middle frame 32 and the down tube 33.

The engine 6 is connected to the crankcase 40, a cylinder block 41 extending substantially upward from the front portion of the crankcase 40, a cylinder head 42 connected to the upper part of the cylinder block 41, and an upper part of the cylinder head 42. This is a parallel 4-cylinder engine including a head cover 43 and four cylinders arranged in a horizontal row in a cylinder block 41.
The cylinder block 41 accommodates a piston in each cylinder so as to be reciprocally movable. The crankcase 40 is supported by a crankshaft connected to the piston via a connecting rod and an output shaft 45 of the engine. A clutch mechanism, a transmission mechanism, and the like constituting a power transmission mechanism between the crankshaft and the output shaft 45 are accommodated. As shown in FIG. 1, the output shaft 45 and the rear wheel 9 are provided with sprockets 46 and 47, respectively, and the power of the engine 6 is transmitted to the rear wheels via a drive chain 48 wound around the sprockets 46 and 47. 9 is transmitted.

As shown in FIG. 2, an exhaust port 42A communicating with the exhaust port of each cylinder is provided on the front surface of the cylinder head 42, and an exhaust pipe 50 is connected to each exhaust port 42A. Each exhaust pipe 50 extends downward from the vehicle body from each exhaust port 42A, extends below the crankcase 40 to the rear of the vehicle body, and is connected to a collective exhaust pipe 51 (see FIG. 1). 9 extends to the right side and extends along the right side of the rear wheel 9, and a muffler 52 (see FIG. 1) is connected to the rear end thereof.
In addition, on the back surface of the cylinder head 42, intake ports 42B communicating with the intake ports of the respective cylinders are provided, and fuel injection devices 70 are connected to the respective intake ports 42B via insulators (pipes) 60, respectively. An air cleaner 80 is continuously provided behind the fuel injection device 70.

  As shown in FIG. 3, the fuel injection device 70 includes a throttle body 71, and the throttle body 71 is connected to the cylinder head 42 via an insulator 60. The throttle body 71 includes an intake passage that communicates with each intake port 42B of the cylinder head 42 via an insulator 60. Each intake passage is provided with a butterfly valve that opens and closes according to a user's throttle operation. The amount of air supplied from the air cleaner 80 to each cylinder of the engine 6 is adjusted by the butterfly valve.

  Four injectors 72 are attached to the throttle body 71, and a head pipe 73 extending from a fuel pump attached to the fuel tank 11 is connected to the injectors 72. Each injector 72 injects fuel supplied to the head pipe 73 into each intake passage of the throttle body 71 according to the throttle opening degree detected by the throttle sensor 74 under the control of a control unit (not shown). As a result, an air-fuel mixture obtained by mixing fuel and air is supplied from the throttle body 71 to the engine 6.

The air cleaner 80 includes an air cleaner case 83 that can be divided into a front case 81 and a rear case 82, and the air cleaner case 83 is inclined in such a direction that the back plate 82A moves away from the front plate 81A downward. The air cleaner 80 is formed in a box shape in which the internal space becomes substantially wider in the front-rear direction as it goes downward.
As shown in FIG. 4, four air funnels 85 are arranged in the front case 81 at intervals, and a cylindrical air filter 86 and an outside air introduction chamber are disposed in a space below these air funnels 85. An outside air introduction unit 87 constituting α is accommodated side by side.

Further, as shown in FIG. 2, a maintenance cover 88 is detachably attached to a side surface of the rear case 82 in a region facing the air filter 86, and when the maintenance cover 88 is removed, a region facing the air filter 86. The air filter 86 can be attached and detached.
Further, as shown in FIG. 3, a mount 82B is integrally formed at the lower portion of the rear case 82, and the air cleaner 80 is supported by the middle frame 32 via the mount 82B as shown in FIG.
Further, as shown in FIGS. 4 and 5, the air cleaner case 83 is formed to have a maximum width at the row of the four air funnels 85 and to be narrow at other positions. Here, the maximum width of the air cleaner case 83 is set to such a dimension that the four air funnels 85 can be arranged so as to be connected to the four intake passages of the fuel injection device 70 with their axial directions aligned.

As shown in FIG. 4, the outside air introduction unit 87 has an outside air introduction port 87 </ b> A, and this outside air introduction port 87 </ b> A opens outside from the back plate 82 </ b> A of the rear case 82 and introduces outside air into the unit 87. Then, outside air is supplied into the air filter 86.
The air filter 86 includes filter paper 86A folded in a wave shape along the outer peripheral shape, and this outer peripheral shape is a wall portion of an air cleaner case 83 that constitutes a housing space for the air filter 86, as shown in FIG. It is formed in the shape along.

More specifically, the air filter 86 is formed in an odd-shaped cross-section that extends downward along the inclination of the back plate 82A of the air cleaner case 83, so that the air cleaner case 83 has a wide front and rear length in a lower space. The air filter 86 is arranged substantially without any gap before and after the air filter 86, so that the arrangement efficiency of the air filter 86 is improved and a wide filtration area can be secured.
As shown by the arrows in FIG. 4, the outside air introduced into the outside air introduction unit 87 by the above configuration passes through the filter paper 86 </ b> A when being removed from the inside to the outside of the air filter 86, and is cleaned by the air filter of the air cleaner case 83. 86 and the outside air introduction unit 87 are introduced into the clean air chamber β, which is the outer space, and the air in the clean air chamber β is supplied to the throttle body 71 of the fuel injection device 70 through the air funnel 85.

As described above, in this embodiment, the air cleaner 80 has a wide space below the air funnel 85, and the air filter 86 and the outside air introduction unit 87 are disposed in the space. 3) can be shortened.
Further, when the height H (see FIG. 3) of the air cleaner 80 is supported on the vehicle body frame 2 as shown in FIG. 2, the height that fits in the gap between the crankcase 40 of the engine 6 and the fuel tank 11. Further, the rear end of the air cleaner 80 is inclined along the inclination of the middle frame 32.
Thereby, the air cleaner 80 is formed in a substantially vertically long shape in a side view, and the front-rear length D of the air cleaner 80 can be shortened while sufficiently securing the capacity of the air cleaner 80. As shown in FIG. The rear end can be positioned in front of the middle frame 32 and positioned below the fuel tank 11. That is, the air cleaner 80 can be arranged at a position where it does not interfere with the middle frame 32 and the fuel tank 11 in a side view.

Further, since the left and right widths of the air cleaner 80 are formed wider than the width of the other portions at the position of the row of air funnels 85, the width of each air funnel 85 is set at an appropriate position according to the fuel injection device 70. Can be made compact. For this reason, the space required for installation of the air cleaner 80 can be saved.
Further, since the outside air introduction chamber α is formed by the outside air introduction unit 87 separate from the air cleaner case 83, the shape of the air cleaner case 83 can be simplified, and the manufacture of the air cleaner case 83 can be facilitated.

  Incidentally, as shown in FIG. 5, the air funnel 85 is formed of an integral part of the left two air funnels (hereinafter referred to as a funnel unit 90A), and an integral part of the two right air funnels (hereinafter referred to as a funnel). Unit 90B). Further, the funnel units 90A and 90B, the air cleaner 80, and the fuel injection device 70 are integrally connected to front end portions (corresponding to clean air outlet side end portions) of the funnel units 90A and 90B. One connection plate 100 is provided.

The first connecting plate 100 includes a plate body 110. The plate body 110 covers the opening holes 101 and 102 communicating with the openings of the two air funnels 85 and the outsides of the opening holes 101 and 102 in an endless manner. A seal groove 111 is provided.
Further, the plate body 110 includes a first connecting portion 120 and a second connecting portion 130 that extend outward from both sides of the plate body 110, and an outer side from a substantially central position on the left and right sides of the plate body 110 (the lower side in FIG. 5). And a third connecting portion 140 extending to the top.

More specifically, the first connecting portion 120 is a region on one side (upper side in FIG. 5) with a straight line L1 connecting the centers of the opening holes 101 and 102 of the plate body 110 as a boundary. A screw hole 121 is provided outside the seal groove 111 and provided outside the vertical line L2 of the straight line L1 passing through the center 101 (left side in FIG. 5).
The second connecting portion 130 is a region on one side with the straight line L1 as a boundary, and is located outside (on the right side in FIG. 5) the vertical line L3 of the straight line L1 passing through the center of the other opening hole 102. The screw hole 131 is provided outside the seal groove 111. Here, in the present configuration, the screw hole 121 of the first connecting part 120 and the screw hole 131 of the second connecting part 130 are provided at symmetrical positions of the first connecting plate 100.

  The third connecting portion 140 is an area on the other side (lower side in FIG. 5) with the straight line L1 as a boundary, and is provided between the vertical lines L2 and L3. A screw hole 141 is provided. As a result, as shown in FIG. 5, screw holes 121, 131, and 141 are respectively formed at both ends of the first connection plate 100 and the lower center of the first connection plate 100, in other words, approximately 2 assumed on the first connection plate 100. Screw holes 121, 131, and 141 are formed at the apex positions of the equilateral triangles.

Further, as shown in FIGS. 3 and 6, a pair of left and right paired left and right first connectors that can be connected to the first connecting plate 100 are provided at the rear end of the fuel injection device 70 (corresponding to the clean air inlet side end). Two connection plates 200 are provided.
The second connection plate 200 includes a plate body 210 having opening holes 201 and 202 that respectively communicate with the opening holes 101 and 102 of the first connection plate 100, and the plate body 210 includes the first connection plate 100. Through holes 221, 231 and 241 communicating with the screw holes 121, 131 and 141, respectively, are formed.

Under the above configuration, as shown in the XX cross section of FIG. 6 in FIG. 7, after the seal 90 is inserted into the seal groove 110 of the first connection plate 100 of the air funnel 85, the first connection plate 100 is moved to the air cleaner. The first connecting plate 100 is made close to one side of the front plate 81A, the second connecting plate 200 of the fuel injection device 70 is made close to the other side of the front plate 81A, and the screw holes 121, 131 and 141 of the first connecting plate 100 (FIG. 7). In FIG. 7, only the screw hole 141 is shown), the screw hole 81B formed in the front plate 81A in advance, the through holes 221, 231 and 241 (only the through hole 241 is shown in FIG. 7) of the second connecting plate 200, To communicate.
Then, the screw 95 is inserted into each communicating hole from the second connecting plate 200 side and fastened to the screw holes 121, 131, and 141 of the first connecting plate 100, thereby connecting the fuel injection device 70 and the air cleaner 80. They can be connected together.

In the present embodiment, as shown in FIG. 2, when the air cleaner 80 and the fuel injection device 70 are installed on the vehicle body, the rear end of the air cleaner 80 is located in front of the middle frame 32. The apparatus 70 and the air cleaner 80 are integrally connected, and this can be attached to and detached from the engine 6 from the side of the vehicle body as one assembly.
Therefore, even when the fuel tank 11 is installed, the air cleaner 80 can be removed from the engine 6 integrally with the fuel injection device 70 by removing the fuel injection device 70 from the insulator 60 without removing the fuel tank 11. The air cleaner 80 can be attached to the engine 6 integrally with the fuel injection device 70, the air cleaner 80 and the fuel injection device 70 can be easily attached and detached, and the assembling property and the maintenance property can be improved.

  Further, in this embodiment, the air cleaner 80 accommodates the cylindrical air filter 86 below and parallel to the row of the plurality of air funnels 85 connected to the fuel injection device 70, so that the longitudinal length D of the air cleaner 80 is Can be shortened. In addition, since the detachable maintenance cover 88 is provided on the side of the air cleaner 80 so that the air cleaner 80 is detachable from the side, the air cleaner 80 can be easily detached from the side of the vehicle body even when the air cleaner 80 is installed on the vehicle body. Therefore, the maintainability of the air filter 86 can be improved.

  In the present embodiment, since the width of the air cleaner 80 is formed wider than the width of the other portions at the row of the air funnels 85, the installation space for the air cleaner 80 can be saved and the space efficiency can be improved. can do.

As mentioned above, although this invention was demonstrated based on one Embodiment, it is clear that this invention is not limited to this. For example, in the above-described embodiment, the case has been described in which the air cleaner 80 is disposed at a position where it does not interfere with the fuel tank 11 and can be detached from the side of the vehicle body without lifting the fuel tank 11. If the fuel tank 11 is lifted up a little without removing the harness or the like, the air cleaner 80 is disposed at a position where the air cleaner 80 interferes with the fuel tank 11 as long as the air cleaner 80 can be detached from the engine 6 integrally with the fuel injection device 70. Also good.
Moreover, although the said embodiment demonstrated the case where the screw holes 121, 131, and 141 which can fasten the screw 95 were formed in the 1st connection plate 100 of the air funnel 85, not only this but the screw holes 121, 131, and Instead of 141, a through hole of a bolt may be formed, and the fuel injection device 70 and the air cleaner 80 may be integrally connected by a bolt and a nut through the through hole.
In the above embodiment, the present invention is exemplified for the intake structure of a motorcycle having a parallel 4-cylinder engine. However, the present invention is not limited thereto, and the motorcycle has another multi-cylinder engine such as a parallel 2-cylinder engine. It is possible to apply to the intake structure.

1 is a side view showing an overall configuration of a motorcycle according to an embodiment. It is a side view which shows a fuel-injection apparatus and an air cleaner with the periphery structure. It is a side view including a partial cross section of a fuel injection device and an air cleaner. It is a perspective view which shows the inside of an air cleaner. It is a figure which shows the 1st connection plate of an air cleaner with a periphery structure. It is a figure which shows the connection state of the 1st connection plate of an air cleaner, and the 2nd connection plate of a fuel-injection apparatus. It is a figure which shows the XX cross section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 6 Engine 30 Head pipe 31 Main pipe 32 Middle frame 33 Down tube 35 Pivot plate 60 Insulator 70 Fuel injection device 71 Throttle body 72 Injector 80 Air cleaner 81 Front case 82 Rear case 83 Case 85 Air funnel 86 Air filter 100 1st connection plate 200 2nd connection plate

Claims (6)

The main pipe (31) extends from the head pipe (30) to the rear of the vehicle body, and is directed from the main pipe (31) toward the pivot plate portion (35) that pivots the swing arm (8) that supports the rear wheel (9). In the intake structure of a motorcycle having a middle frame (32) extending and a fuel injection device (70) in front of the middle frame (32) ,
Said continuously provided an air cleaner (80) behind the fuel injection device (70), an air cleaner rear end of the rear plate (80) said (82A) middle frame (32) the middle frame than the forward position (32) And the inclined surface along
The air cleaner (80) includes a plurality of air funnels (85) connected to the fuel injection device (70) and a cylindrical air filter (parallel to the row of the air funnels (85)) disposed below the air funnel (85). 86), the air filter (86), and an outside air introduction unit (87) accommodated side by side,
The outside air introduction unit (87) has an outside air introduction port (87A) for introducing outside air into the outside air introduction unit (87), and the outside air introduced from the outside air introduction port (87A) is supplied to the air filter (86). The outside air inlet (87A) is opened flush with the back plate (82A) at the back plate (82A) of the air cleaner, and the air cleaner (80) is connected to the fuel injection device (70). ) And detachable from the side of the vehicle body to the engine (6),
A motorcycle intake structure comprising a detachable cover (88) on a side of the air cleaner (80), and the air filter (86) being detachable by removing the cover (88) . A mount (82B) is integrally formed at the rear lower part of the air cleaner (80) along the middle frame (32), and the air cleaner (80) is connected to the middle frame (32) through the mount (82B). 2. The motorcycle intake structure according to claim 1, wherein the intake structure is a motorcycle. The air cleaner (80) is inclined in such a direction that the back plate (82A) is away from the front plate (81A) at the front end of the air cleaner (80) so as to move downward, and the inner space is increased in the front-rear direction as it goes downward. The intake structure for a motorcycle according to claim 1 or 2, wherein the intake structure is formed in a wide box shape. The said air filter (86) is formed in the odd-shaped cross section which spreads below along the inclination of the backplate (82A) of the said air cleaner (80), The Claim 1 thru | or 3 characterized by the above-mentioned. Motorcycle intake structure. The engine (6) includes a cylinder block (41), a cylinder head (42), and a head cover (43) that extend substantially upward from a front portion of the crankcase (40), and the cylinder block (41), cylinder head (41), a head cover (41), and a space that opens to the side of the vehicle body are formed between the middle frame, and through this space, the air cleaner (80) is integrated with the fuel injection device (70) on the vehicle body side. The intake structure for a motorcycle according to any one of claims 1 to 4, characterized in that the engine (6) can be attached to and detached from the side. The motorcycle according to any one of claims 1 to 5, wherein, in the position of the row of the air funnels (85), the left and right widths of the air cleaner (80) are formed wider than the widths of other portions. Intake structure.

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