WO2022172431A1

WO2022172431A1 - Saddle-type vehicle

Info

Publication number: WO2022172431A1
Application number: PCT/JP2021/005442
Authority: WO
Inventors: 昂翔田中
Original assignee: ヤマハ発動機株式会社
Priority date: 2021-02-15
Filing date: 2021-02-15
Publication date: 2022-08-18

Abstract

An atmosphere intake port (131) of an intake unit (112) is located forward from a seat (102) in a front-rear direction, and upward from at least one intake port (127a) of a cylinder head (121) in an up-down direction, in (a). Alternatively, at least part of the atmosphere intake port (131) is located directly below a seat (102) in the up-down direction, as viewed in a right-left direction in (b). Further included are a speaker (151) and an active sound creation control device (152). The speaker (151) is disposed in the air intake unit (112) such that sound generated at the speaker (151) by the active sound creation control device (152) is sent out from the atmosphere intake port (131) to a space in which a rider (R) is seated on the seat (102).

Description

straddle-type vehicle

The present invention relates to a straddle-type vehicle.

Patent Literature 1 describes making a passenger in the passenger space hear sound emitted toward the passenger space from a speaker provided at the front or rear of the automobile.

WO 12/141325

Straddle-type vehicles such as motorcycles are also required to let the rider hear the sound generated by the speaker. However, since a saddle-type vehicle is generally smaller than an automobile, it is difficult to place the speakers of the automobile as they are because there are large restrictions on the locations where the speakers are arranged. Alternatively, even if a large speaker similar to that mounted on an automobile could be mounted on a straddle-type vehicle, the straddle-type vehicle would become large. Further, in a straddle-type vehicle, when a rider hears a sound generated by a speaker, it is required that the rider can easily hear the sound of the speaker.

An object of the present invention is to provide a saddle-ride type vehicle that allows a rider to easily hear the sound of a speaker and that can suppress an increase in the size of the saddle-ride type vehicle.

A straddle-type vehicle according to one embodiment of the present invention has the following configuration. The vehicle includes a seat on which a rider sits, and an engine unit, at least a part of which is positioned right below the seat in the vertical direction of the vehicle when viewed in the lateral direction of the vehicle. The engine unit includes a cylinder head and has an engine body partially exposed when viewed in the left-right direction. The engine unit has an air inlet for drawing air from the atmosphere and has an air intake unit connected to at least one air inlet on the outer surface of the cylinder head forming an air intake path for air intake into the engine body. . The engine unit has an exhaust unit connected to the engine body and forming an exhaust path for exhaust from the engine body. The air intake port is (a) positioned forward of the seat in the longitudinal direction of the vehicle and above at least one intake port of the cylinder head in the vertical direction. Alternatively, (b) at least a portion of the air intake port is positioned immediately below the seat in the vertical direction when viewed in the horizontal direction. It further comprises a speaker and an active sound create control device for controlling the speaker to generate a sound for the rider seated on the seat to hear. A speaker is arranged in the air intake unit so that the sound generated by the speaker by the active sound create control device is transmitted from the air intake to the space where the rider is seated on the seat.

According to this configuration, at least a portion of the engine unit, which includes the engine body, the intake unit, and the exhaust unit when viewed in the left-right direction, is positioned directly below the seat in the up-down direction. Further, the air intake port of the air intake unit is (a) located forward of the seat in the longitudinal direction and above the intake port on the outer surface of the cylinder head in the vertical direction of the vehicle. Alternatively, the air intake port of the air intake unit is (b) located right below the seat in the up-down direction when viewed in the left-right direction. Therefore, the air intake through which the sound generated by the speaker is transmitted is close to the rider seated on the seat. Moreover, unlike automobiles, the air intake port of the air intake unit of a straddle-type vehicle is located within the space where the rider is seated on the seat. Therefore, the sound generated by the speaker is transmitted from the air intake to the space where the rider is seated. Therefore, the rider can efficiently hear the sound emitted from the air intake.

In addition, the air intake is close to the rider sitting on the seat, and the air intake is in the space where the rider sitting on the seat is. Therefore, even a small-sized speaker can sufficiently let the rider hear the sound. Further, since the speaker is small, it is possible to arrange the speaker inside the air intake unit while suppressing an increase in the size of the air intake unit.

From the above, with this configuration, the rider can easily hear the sound of the speaker, and the size of the straddle-type vehicle can be suppressed.

A straddle-type vehicle according to an embodiment of the present invention may have the following configuration. A noise information acquiring section that acquires information related to noise generated in the intake unit by driving the engine body is further provided. The active sound create control device causes the speaker to generate sound for the rider to hear, and causes the speaker to generate sound for reducing noise based on the noise information obtained by the noise information obtaining unit. , to control the speakers.

According to this configuration, the speaker generates sound for reducing the noise generated inside the intake unit due to the driving of the engine, so the noise can be reduced. Furthermore, in this configuration, the speaker generates sounds for the rider to hear and sounds for reducing the noise. As a result, the sound for the rider to hear can be heard after the noise has been reduced. As a result, the sound intended for the rider to hear can be heard more efficiently by the rider. Therefore, the speaker can be made smaller. As a result, the rider can easily hear the sound of the speaker, and the increase in size of the straddle-type vehicle can be further suppressed.

According to this configuration, the rider can easily hear the sound of the speaker, and an increase in the size of the straddle-type vehicle can be suppressed.

[Straddle-type vehicle]
In the present invention and embodiments, a "straddle-type vehicle" is a vehicle in which a rider straddles a saddle. Straddle-type vehicles in the present invention and embodiments include motorcycles, scooters, mopeds, motorized bicycles, motor tricycles and ATVs (All Terrain Vehicles). Straddle-type vehicles, unlike automobiles, do not have a cabin in which a driver (rider) is accommodated. In other words, the space where the rider of the straddle-type vehicle is located is not separated from the space where the air intake is located by a wall. A straddle-type vehicle has at least one front wheel and at least one rear wheel. A straddle-type vehicle may have a single front wheel or two front wheels. A straddle-type vehicle may have a single rear wheel or two rear wheels. The drive wheels of the straddle-type vehicle may be the rear wheels, the front wheels, or both the front and rear wheels. The straddle-type vehicle according to the present invention and embodiments may have an electric motor as a drive source in addition to the engine unit. That is, the straddle-type vehicle may be a hybrid vehicle. The straddle-type vehicle according to the present invention and embodiments may not have an electric motor as a drive source.

[Seat where the rider sits]
In the present invention and embodiments, the "seat on which the rider sits" is the part on which the rider sits. The seat on which the rider sits does not include the part on which the rider's waist or back rests. The seat where the rider sits does not include the part where the tandem rider (passenger other than the driver) sits.

[Engine unit]
The type of "engine unit" in the present invention and embodiments is not particularly limited. The type of engine unit may be, for example, a gasoline engine or a diesel engine. The type of engine unit may be a 4-stroke engine or a 2-stroke engine. The engine unit may or may not have a canister. The engine unit may or may not have a forced induction device. The supercharger may be a turbocharger or a supercharger. The type of engine unit may be a single-cylinder engine or a multi-cylinder engine. In the case of a multi-cylinder engine, it may be a V-type engine, an in-line engine, or a horizontally opposed engine. The engine unit may be a swing unit type engine. The engine unit may or may not include a power transmission section that transmits power to the drive wheels.

[Atmospheric intake]
In the present invention and embodiments, an "atmospheric intake" is an opening for drawing air from the atmosphere into the intake path. In other words, the air intake port is the upstream end of the intake path in the direction of air flow. The air intake unit in the invention and embodiments may have only one air intake or may have multiple air intakes. If the intake unit has multiple air intakes, at least one of the multiple air intakes should satisfy the requirements of claim 1 . In other words, the plurality of atmospheric air intakes are "atmospheric air intakes located forward of the seat in the longitudinal direction of the vehicle and above at least one intake on the outer surface of the cylinder head in the vertical direction", or " At least one of the "atmospheric air inlets" may be included, at least a portion of which is located directly below the seat in the vertical direction when viewed in the left-right direction.

[Intake Path and Exhaust Path]
In the present invention and embodiments, the "intake path" means a space through which air passes. In the present invention and embodiments, the term "exhaust path" means a space through which exhaust gas passes.

[Cylinder head and air intake]
In the present invention and embodiments, a "cylinder head" may be composed of multiple separable parts, may be composed of a single non-separable part, or may be part of a single non-separable part. may consist of The cylinder head forms part of the combustion chamber. The cylinder head is connected to a cylinder body having at least one cylinder bore. The engine body may or may not have a head cover. When the engine body has a head cover, the cylinder head may include the head cover or may be connected to the head cover without including the head cover. When the engine unit is a V-type engine, the engine body has two cylinder heads. These two cylinder heads are, for example, a front cylinder head and a rear cylinder head arranged behind the front cylinder head in the longitudinal direction of the vehicle.
In the present invention and embodiments, the straddle-type vehicle is characterized in that "an air intake is positioned forward of the seat in the longitudinal direction of the vehicle and above at least one intake on the outer surface of the cylinder head in the vertical direction. In addition to the cylinder head that meets the requirement, it may also have a cylinder head that does not meet this requirement. For example, if the engine unit is a V-type engine having a front cylinder head and a rear cylinder head, the front cylinder head may meet the above requirements and the rear cylinder head may not.
In the present invention and embodiments, when the engine unit is a single-cylinder engine, the number of intake ports formed on the outer surface of the cylinder head may be one or plural. In the present invention and embodiments, when the engine unit is a multi-cylinder engine, the number of intake ports formed on the outer surface of the cylinder head may be one or plural.
In the present invention and embodiments, the air intake port may be located forward of the seat in the longitudinal direction of the vehicle and above all the intake ports on the outer surface of the cylinder head in the vertical direction. In the present invention and embodiments, the air intake port is located forward of the seat in the longitudinal direction of the vehicle and above any one of the plurality of intake ports on the outer surface of the cylinder head in the vertical direction. may be

[Speaker]
A "speaker" in the present invention and embodiments is a device that converts an electrical signal into sound. The speakers are electrically connected to the active sound create controller. The speakers may be connected to the ActiveSoundCreate controller, for example via amplifiers. A straddle-type vehicle according to the present invention and embodiments may have only one speaker, or may have a plurality of speakers. If the straddle-type vehicle has a plurality of speakers, at least one speaker among the plurality of speakers should satisfy the requirements of claim 1 .

[Sounds for riders to hear]
In the present invention and embodiments, "sounds to be heard by riders" are sounds to be actively heard by riders. The sound that the rider hears positively is generated by the driving of the engine body, and added to the sound emitted from the air intake port to amplify the sound or adjust the sound quality of the sound. include. In addition, the sounds intended to be actively heard by the rider include sounds unrelated to the sounds generated by driving the engine body. In addition, in the present invention and the embodiments, sounds intended for the rider to hear do not include sounds that are not intended to be actively heard by the rider. Sounds not intended to be actively heard by the rider include, for example, sounds for reducing noise generated by driving the engine body.

[Noise information acquisition unit]
In the present invention and embodiments, the "noise information acquisition unit" includes a microphone for detecting the noise itself and a sensor for detecting information related to the driving status of the engine body. A sensor that detects information related to the driving state of the engine body includes, for example, an intake pressure sensor that detects the air pressure in the intake path. The noise information acquisition section is electrically connected to the active sound create control device. The noise information acquisition section may be arranged upstream of the speaker in the direction of air flow in the intake path. For example, the noise information acquisition unit may be a microphone that detects noise after it has been reduced by the sound generated by the speaker. The noise information acquisition section may be arranged downstream of the speaker in the direction of air flow in the intake path. For example, the noise information acquisition unit may be a microphone that detects noise before it is reduced by the sound generated by the speaker. The noise information acquisition section may be arranged at the same position as the speaker in the direction of air flow in the intake path. In the present invention and embodiments, the engine unit may have only one noise information acquiring section, or may have a plurality of noise information acquiring sections. A plurality of noise information acquisition units may be arranged upstream and downstream of the speaker, for example, in the direction of air flow in the intake path.

[others]
In the present invention and embodiments, the vertical direction of the vehicle is the vertical direction when the straddle-type vehicle stands upright on a horizontal road surface. Further, the left-right direction of the vehicle and the front-rear direction of the vehicle are the directions viewed from the rider riding the straddle-type vehicle in the above state. The up-down direction of the vehicle, the left-right direction of the vehicle, and the front-rear direction of the vehicle are orthogonal to each other.

In the present invention and embodiments, A being in front of B refers to the following states, unless otherwise specified. The whole of A is in the front space of the two spaces separated by a plane passing through the foremost end of B and perpendicular to the front-rear direction. The rear end of A may lie on a plane that passes through the front end of B and is perpendicular to the front-rear direction. A and B may or may not be aligned in the front-rear direction.
Note that the same definition applies to the expression that A is behind B. Similar definitions also apply to the expression that A is to the right or left of B. Similar definitions also apply to the expression that A is above or below B. When A is directly below B when viewed in the horizontal direction, A is always below B. When A is below B, A is not necessarily directly below B when viewed in the horizontal direction.

It should be noted that "at least one (one) of a plurality of options" in the present invention and embodiments includes all possible combinations of a plurality of options. At least one (one) of the multiple options may be any one of the multiple options, or may be all of the multiple options. For example, at least one of A, B, or C may be A only, B only, C only, A and B, A and C , B and C, or A, B, and C.

In the claims, if the number of a component is not clearly specified and is indicated by the singular when translated into English, the present invention may have a plurality of this component. The invention may also have only one of this component. The components here are, for example, a cylinder head, a speaker, an air inlet, and a noise information acquisition section.

It should be noted that the use of "including, comprising, having and derivatives thereof" in the present invention and embodiments encompasses the recited items and their equivalents as well as additional items. is intended and used.

Unless defined otherwise, all terms (including technical and scientific terms) used in the specification and claims have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be construed to have a meaning consistent with their meaning in the context of the relevant technology and this disclosure, and are not idealized or overly formal. not be interpreted in any meaningful way.

It should be noted that the term "may" is non-exclusive in the present invention and embodiments. "May be" means "may be, but is not limited to." In the present invention and the embodiments, the configuration described as "may" has at least the above effect obtained by the configuration of claim 1.

Before describing embodiments of the present invention in detail, it is to be understood that the present invention is not limited to the details of construction and arrangement of components set forth in the following description or illustrated in the drawings. be. The present invention is also possible in embodiments other than those described below. The present invention is also possible in embodiments in which various modifications are made to the embodiments described later.

1(a) is a diagram illustrating an outline of a straddle-type vehicle according to a first embodiment of the present invention, and FIG. 1(b) is a diagram illustrating an outline of a straddle-type vehicle according to a second embodiment of the present invention; (c) is a diagram for explaining an outline of a straddle-type vehicle according to a third embodiment of the invention, and (d) is a diagram for explaining an outline of a straddle-type vehicle according to a fourth embodiment of the invention. It is the figure which expanded a part of engine unit of 5th Embodiment of this invention. (a) is a diagram illustrating an outline of an intake unit according to a sixth embodiment of the present invention; (b) is a diagram illustrating an outline of an intake unit according to a seventh embodiment of the present invention; FIG. 12D is a diagram illustrating an outline of an intake unit according to an eighth embodiment of the present invention, and FIG. 14D is a diagram illustrating an outline of an intake unit according to a ninth embodiment of the present invention; (a) is a diagram for explaining an outline of a straddle-type vehicle according to a tenth embodiment of the present invention; (b) is a diagram for explaining an outline of a straddle-type vehicle according to an eleventh embodiment of the present invention; (c) is a diagram for explaining an outline of a straddle-type vehicle according to a twelfth embodiment of the invention, and (d) is a diagram for explaining an outline of a straddle-type vehicle according to a thirteenth embodiment of the invention.

Embodiments of the present invention will be described below. Here, the front-rear direction, the left-right direction, and the up-down direction in the following description are the front-rear direction of the vehicle, the left-right direction of the vehicle, and the up-down direction of the vehicle, respectively. Note that the embodiments described below are examples. The present invention is not to be construed in any way as limited by the embodiments described below.

[First embodiment to fourth embodiment]
First to fourth embodiments of the present invention will be described below with reference to FIGS. 1(a) to 1(d). FIG. 1(a) shows a straddle-type vehicle 101 of the first embodiment. FIG. 1(b) shows a straddle-type vehicle 101 of the second embodiment. FIG. 1(c) shows a straddle-type vehicle 101 of the third embodiment. FIG. 1(d) shows a straddle-type vehicle 101 of the fourth embodiment.
Note that arrow F, arrow Re, arrow U, and arrow D in FIGS. 1(a) to 1(d) indicate forward, backward, upward, and downward, respectively. A straddle-type vehicle 101 according to the first to fourth embodiments includes a seat 102 and an engine unit 103 .
The seat 102 is a part on which the rider R of the straddle-type vehicle 101 sits.

At least a portion of the engine unit 103 is positioned directly below the seat 102 when viewed in the left-right direction. At least part of the engine unit 103 may be positioned below the seat 102 and may overlap the seat 102 when viewed in the vertical direction. That is, at least a portion of the engine unit 103 may be positioned directly below the seat 102 . At least part of the engine unit 103 may be positioned below the seat 102 and may not overlap the seat 102 when viewed in the vertical direction. 1(a) to 1(d), a portion of the engine unit 103 is located directly below the seat 102 when viewed in the left-right direction. The engine unit 103 may be entirely positioned directly below the seat 102 when viewed in the left-right direction.

The engine unit 103 includes an engine body 111 , an intake unit 112 and an exhaust unit 113 .
At least a portion of the engine body 111 is exposed when viewed in the left-right direction. 1(a) to 1(d), the engine body 111 is partially exposed when viewed in the left-right direction. The engine body 111 may be entirely exposed when viewed in the left-right direction. Engine body 111 includes a cylinder head 121 . At least a portion of the engine body 111 may be directly below the seat 102 when viewed in the left-right direction. At least a portion of the engine body 111 may be located forward of the seat 102 .

The intake unit 112 forms an intake path 130 . Intake path 130 is a path for intake air to engine body 111 . The intake unit 112 is connected to a cylinder head 121 forming the engine body 111 . The intake path 130 is connected to at least one intake port 127 a on the outer surface 121 a of the cylinder head 121 . The air intake path 130 also has an air intake port 131 for sucking air from the atmosphere at the upstream end in the air flow direction.

1(a) and 1(b), the air intake port 131 is located forward of the seat 102 and above the intake port 127a of the cylinder head 121. In FIG. When the engine body 111 is a multi-cylinder engine, the air intake port 131 is located above the plurality of intake ports 127a of the cylinder head 121 corresponding to the plurality of cylinder holes 122a.

In FIGS. 1(c) and 1(d), at least a portion of the air intake port 131 is positioned directly below the seat 102 when viewed in the left-right direction. At least a portion of the air intake port 131 may be positioned below the seat 102 and may overlap the seat 102 when viewed in the vertical direction. That is, at least a portion of the atmospheric air intake 131 may be positioned directly below the seat 102 . At least part of the air inlet 131 may be positioned below the seat 102 and may not overlap the seat 102 when viewed in the vertical direction.

The exhaust unit 113 forms an exhaust path 140 . Exhaust path 140 is a path for exhaust from engine body 111 . The exhaust unit 113 is connected to a cylinder head 121 forming the engine body 111 . Although part of the exhaust unit 113 is omitted in FIGS. 1(a) to 1(d), at least a portion of the exhaust unit 113 of the first to fourth embodiments is shown in the horizontal direction. directly below the seat 102 .

Straddle-type vehicle 101 further includes speaker 151 and active sound create control device 152 . The active sound create control device 152 controls the speaker 151 so as to generate sounds for the rider R seated on the seat 102 to hear. Further, the speaker 151 is arranged so that the sound generated by the speaker 151 to be heard by the rider R is transmitted through the intake path 130 from the air intake port 131 to the space where the rider R seated on the seat 102 is. are arranged in the intake unit 112 .
In the first to fourth embodiments, the sound of the speaker 151 can be easily heard by the rider R, and an increase in size of the straddle-type vehicle 101 can be suppressed.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG. A straddle-type vehicle 101 of the fifth embodiment has the following configuration in addition to the configurations of the first to fourth embodiments. FIG. 2 shows an example of the engine unit 103 of the straddle-type vehicle 101 of the fifth embodiment. 2 may be parallel to the vertical direction of the vehicle, may be parallel to the longitudinal direction of the vehicle, or may be inclined with respect to the longitudinal direction of the vehicle and the vertical direction of the vehicle. good.
The engine body 111 of the fifth embodiment includes a cylinder head 121, a cylinder body 122, and a piston 123. A cylinder head 121 and a cylinder body 122 are connected. The cylinder body 122 has at least one cylinder hole 122a. The piston 123 is arranged inside the cylinder hole 122 a of the cylinder body 122 . A combustion chamber 126 is formed by the cylinder head 121 , the cylinder body 122 and the piston 123 . In addition, in FIG. 2, the hatching indicating the cross section of the cylinder head 121 is omitted.
Here, the engine main body 111 may be a single-cylinder engine configured such that the cylinder body 122 has one cylinder hole 122a. Alternatively, the engine body 111 may be a multi-cylinder engine configured such that the cylinder body 122 has a plurality of cylinder holes 122a.

In the straddle-type vehicle 101 shown in FIGS. 1(a) and 1(c), the center axis CL of the cylinder hole 122a is parallel to the vertical direction or inclined at an angle of 45° or less with respect to the vertical direction. good.
In the straddle-type vehicle 101 shown in FIGS. 1(b) and 1(d), the center axis CL of the cylinder hole 122a is parallel to the front-rear direction or inclined at an angle of 45° or less with respect to the front-rear direction. good.
When the central axis CL of the cylinder hole 122a is inclined with respect to the vertical direction and the front-rear direction, the direction from the cylinder body 122 toward the cylinder head 121 on the central axis CL of the cylinder hole 122a may be diagonally forward and upward.

A head intake path 127 and a head exhaust path 128 are formed in the cylinder head 121 . Head intake path 127 is connected to combustion chamber 126 . Also, the head intake path 127 has at least one intake port 127a that opens to the outer surface 121a of the cylinder head 121 . When a plurality of intake ports 127a are formed in the outer surface 121a of the cylinder head 121, the plurality of intake ports 127a are arranged in the horizontal direction. At least one intake port 127 a is formed in the rear or top surface of the cylinder head 121 . When the central axis CL of the cylinder hole 122 a is parallel to the vertical direction or inclined at an angle of 45° or less with respect to the vertical direction, at least one intake port 127 a is formed in the rear surface of the cylinder head 121 . When the central axis CL of the cylinder hole 122 a is parallel to the front-rear direction or inclined at an angle of 45° or less with respect to the front-rear direction, at least one intake port 127 a is formed in the upper surface of the cylinder head 121 .
Head exhaust path 128 is connected to combustion chamber 126 . Also, the head exhaust path 128 has at least one exhaust port 128 a that opens to the outer surface 121 a of the cylinder head 121 . The exhaust path 140 of the exhaust unit 113 is connected to at least one exhaust port 128a.

[Sixth Embodiment to Ninth Embodiment]
Next, sixth to ninth embodiments of the present invention will be described with reference to FIGS. 3(a) to 3(d). Straddle-type vehicles 101 of the sixth to ninth embodiments have the following configuration in addition to the configurations of the first to fourth embodiments. The straddle-type vehicle 101 of the sixth to ninth embodiments may have the configuration of the fifth embodiment. FIGS. 3(a) to 3(d) show an example of the intake unit 112 of the straddle-type vehicle 101 of the sixth to ninth embodiments. In the following description, upstream means upstream in the flow direction of air supplied to the combustion chamber, and downstream means downstream in the flow direction of air supplied to the combustion chamber.
The air intake unit 112 of the sixth to ninth embodiments has an air cleaner 211, at least one air intake pipe 212, and at least one air intake pipe 213.

A filter 222 is provided in an internal space 221 of the air cleaner 211 . The internal space 221 is separated by a filter 222 into a dirty space 221a and a clean space 221b. Dirty space 221a is upstream of clean space 221b.
The upstream end of the internal space 231 of the air intake pipe 212 is the air intake port 131 . The internal space 231 of the air intake pipe 212 is connected to the internal space 221 of the air cleaner 211 (more specifically, the dirty space 221a). 3(a) to 3(d), the downstream portion of the air intake pipe 212 is located in the internal space 221 (dirty space 221a). The downstream end of the air intake pipe 212 may be connected to the air cleaner 211 instead of being located in the internal space 221 (dirty space 221a).

The intake pipe 213 connects the air cleaner 211 and the cylinder head 121 . A throttle valve (not shown) is provided in the intake pipe 213 . When there are a plurality of intake pipes 213, a plurality of throttle valves are provided in the plurality of intake pipes 213, respectively. The internal space 221 (clean space 221 b ) of the air cleaner 211 and the intake port 127 a of the cylinder head 121 communicate with each other via the internal space 241 of the intake pipe 213 . 3(a) to 3(d), the upstream end of the intake pipe 213 is not located in the internal space 221 (clean space 221b), but is connected to the air cleaner 211. In FIGS. An upstream portion of the intake pipe 213 may be located in the internal space 221 (clean space 221b).

In the sixth embodiment, the speaker 151 is arranged in the internal space 231 of the air intake pipe 212 as shown in FIG. 3(a). The speaker 151 may or may not form part of the inner wall of the air intake pipe 212 . The speaker 151 may be arranged in a portion of the internal space 231 of the air intake pipe 212 that is located in the internal space 221 (dirty space 221a) of the air cleaner 211 . Alternatively, the speaker 151 may be arranged in a portion of the internal space 231 of the air intake pipe 212 located outside the air cleaner 211 .
In the seventh to ninth embodiments, the speaker 151 is arranged in the internal space 221 of the air cleaner 211. FIG. The speaker 151 may be placed in the dirty space 221a and may be placed in the clean space 221b. Speaker 151 may or may not form part of the inner wall of air cleaner 211 .
In the seventh and eighth embodiments, as shown in FIGS. 3(b) and 3(c), the speaker 151 allows at least part of the sound generated by the speaker 151 to pass through the air intake pipe without reflection. 212 is arranged to reach the internal space 231 .
In the seventh embodiment, as shown in FIG. 3B, the speaker 151 is arranged to face the opening 233 in the direction of the central axis OL of the opening 233, which is the downstream end of the internal space 231 of the air intake pipe 212. It is
In the eighth embodiment, as shown in FIG. 3C, the speaker 151 is arranged so as not to face the opening 233 of the air intake pipe 212 in the direction of the central axis OL of the opening 233 .
In the ninth embodiment, as shown in FIG. 3(d), the speaker 151 is arranged so that at least part of the sound generated by the speaker 151 reaches the internal space 231 of the air intake pipe 212 after being reflected. It is The speaker 151 may be arranged to face the inner wall surface 221 c of the dirty space 221 a of the air cleaner 211 . That is, the speaker 151 may be arranged to emit sound toward the inner wall surface 221c of the dirty space 221a of the air cleaner 211. FIG. In this case, the sound generated by the speaker 151 reaches the internal space 231 of the air intake pipe 212 after being reflected by the inner wall surface 221c. A member may be arranged in the internal space 221 of the air cleaner 211 to reflect the sound generated by the speaker 151 toward the internal space 231 of the air intake pipe 212 . For example, a member for reflecting the sound may be arranged in the dirty space 221a.

[Tenth to thirteenth embodiments]
Next, tenth to thirteenth embodiments of the present invention will be described with reference to FIGS. 4(a) to 4(d). A straddle-type vehicle 101 of the tenth embodiment has the following configuration in addition to the configuration of the first embodiment. A straddle-type vehicle 101 of the eleventh embodiment has the following configuration in addition to the configuration of the second embodiment. A straddle-type vehicle 101 of the twelfth embodiment has the following configuration in addition to the configuration of the third embodiment. A straddle-type vehicle 101 of the thirteenth embodiment has the following configuration in addition to the configuration of the fourth embodiment.
The straddle-type vehicle 101 of the tenth to thirteenth embodiments may have the configuration of the fifth embodiment. The straddle-type vehicle 101 of the tenth to thirteenth embodiments may have any of the configurations of the sixth to ninth embodiments.
A straddle-type vehicle 101 according to the tenth to thirteenth embodiments includes a noise information acquisition section 311. FIG. The noise information acquisition unit 311 acquires information related to noise generated inside the intake unit 112 when the engine body 111 is driven. The noise information acquisition section 311 is provided in the intake unit 112 . There may be only one noise information acquisition unit 311, or there may be a plurality of them.

In addition, the active sound creation control device 152 of the tenth to thirteenth embodiments controls the speaker 151 so as to generate the sound for reducing the noise as well as the sound for the rider R to hear. do. The sound for reducing the noise may be, for example, a sound whose phase is opposite to that of the noise indicated by the information acquired by the noise information acquisition unit 311 .

[Other embodiments]
In FIGS. 3(a) to 3(d), the air cleaner is not formed integrally with the air intake pipe, but at least part of the air cleaner may be integrally formed with at least part of the air intake pipe. Although the air cleaner is not integrally formed with the intake pipe in FIGS. 3(a) to 3(d), at least a portion of the air cleaner may be integrally formed with at least a portion of the intake pipe.

The shape of the intake passage of the intake unit in the present invention is not limited to the shapes shown in FIGS. 1(a) to 1(d) and FIGS. 3(a) to 3(d).
For example, in FIGS. 1(a) to 1(d), a portion of the intake path is positioned directly below the seat when viewed in the left-right direction, but the entire intake path is positioned forward of the seat. good too.
Further, for example, in FIG. 1(d), the intake path does not have a portion located forward of the seat, but the intake path may have a portion located forward of the seat.
Further, for example, in FIGS. 3(a) to 3(d), the air intake pipe having the air intake port is connected to the front surface of the air cleaner, but the air intake pipe having the air intake port is connected to the rear surface of the air cleaner. , left side, right side, top side, or bottom side.
Further, for example, in FIGS. 3(a) to 3(d), the intake pipe connected to the engine body is connected to the front surface of the air cleaner, but the intake pipe connected to the engine body is connected to the rear surface of the air cleaner. , left side, right side, top side, or bottom side.
In addition, in FIGS. 3(a) to 3(d), the air intake pipe having the air intake and the air intake pipe connected to the engine body are connected to the same surface of the air cleaner. and the intake pipe connected to the engine body may be connected to different surfaces of the air cleaner.
Further, for example, in FIGS. 3(a) to 3(d), the dirty space and the clean space are arranged in the vertical direction in the air cleaner, but the dirty space and the clean space are arranged in the front-rear direction, the left-right direction, and the like. They may be arranged in a direction other than the vertical direction.
In Figures 3(a) to 3(d), the air intake pipe protrudes from the air cleaner. However, if part of the air intake pipe is arranged inside the air cleaner, the air intake pipe does not need to protrude from the air cleaner. In this case, an air intake is formed in the air cleaner.
If the air intake is located forward of the seat and above at least one air intake on the outer surface of the cylinder head, the air intake is located forward of the air intake on the outer surface of the cylinder head. It doesn't matter if it is or not.
When at least a portion of the air intake port is located directly below the seat when viewed in the left-right direction, the air intake port may or may not be located behind at least one air intake port on the outer surface of the cylinder head.

The positions of the speakers in the present invention are not limited to the positions shown in FIGS. 1(a) to 1(d) and FIGS. 3(a) to 3(d). 1(a) to 1(d) and 3(a) to 3(d), the speaker is placed inside the air cleaner. It may be arranged upstream or downstream of the air cleaner.

Further, the air cleaner may be connected to a closed pipe separate from the air intake pipe having the air intake port and the intake pipe connected to the engine body. A speaker may be placed in this closed tube. In this case, an intake path is formed by the internal space of the atmosphere intake pipe, the internal space of the air cleaner, the internal space of the intake pipe, and the internal space of the closed pipe.
Further, instead of providing an air intake pipe protruding to at least one of the inside and the outside of the air cleaner, the air cleaner may be provided with a hole. In this case, the speaker is placed in or downstream of the air cleaner. This hole corresponds to the air inlet of the present invention.
Also, the air intake pipe may have a plurality of main pipe portions connected to the air cleaner, and a communication pipe portion that allows the main pipe portions to communicate with each other. In this case, a speaker may be arranged in at least one main tube portion. Alternatively, a speaker may be arranged in the communicating tube portion. Also, the number of the communicating pipe portion may be one, or plural. When there are a plurality of communication pipes, a speaker may be arranged in at least one communication pipe.
In FIGS. 1(a) and 1(b), the air intake port is located forward of the intake port on the outer surface of the cylinder head, and the speaker is located behind the intake port on the outer surface of the cylinder head. In addition, in FIGS. 1(c) and 1(d), the air intake port is located behind the intake port on the outer surface of the cylinder head, and the speaker is located behind the intake port on the outer surface of the cylinder head. However, the positional relationship between the air intake, the intake on the outer surface of the cylinder head, and the speaker is not limited to this.
The air intake port may be located forward of the intake port on the outer surface of the cylinder head, and at least part of the speaker may be located forward of the intake port on the outer surface of the cylinder head. Further, the air intake port may be positioned rearward of the air intake port on the outer surface of the cylinder head, and at least a portion of the speaker may be positioned forward of the air intake port on the outer surface of the cylinder head.

The position of the noise information acquisition unit in the present invention is not limited to the positions shown in FIGS. 4(a) to 4(d). In FIGS. 4(a) to 4(d), the noise information acquiring section is arranged inside the air cleaner, but the position of the noise information acquiring section in the present invention is not limited to this. The noise information acquisition section may be arranged upstream of the air cleaner in the direction of air flow, or may be arranged downstream of the air cleaner. When there are a plurality of noise information acquisition sections, the plurality of noise information acquisition sections may include a noise information acquisition section arranged inside the air cleaner and a noise information acquisition section arranged upstream of the air cleaner. The plurality of noise information acquisition units may include a noise information acquisition unit arranged inside the air cleaner and a noise information acquisition unit arranged downstream of the air cleaner. The plurality of noise information acquisition units may include a noise information acquisition unit arranged upstream of the air cleaner and a noise information acquisition unit arranged downstream of the air cleaner. A plurality of noise information acquisition units may be arranged in the air cleaner. The noise information acquisition section may be provided in a portion other than the intake unit in the straddle-type vehicle.

101: Straddle-type vehicle, 102: Seat, 103: Engine unit, 111: Engine body, 112: Intake unit, 113: Exhaust unit, 121: Cylinder head, 121a: Outer surface of cylinder head, 127a: Intake port, 128: Exhaust path 130: Intake path 131: Atmosphere intake port 151: Speaker 152: Active sound create control device 311: Noise information acquisition unit

Claims

A seat on which the rider sits,
an engine unit, at least a part of which is located immediately below the seat in the vertical direction of the vehicle when viewed in the lateral direction of the vehicle;
The engine unit is
an engine body including a cylinder head, a part of which is exposed when viewed in the left-right direction;
an air intake unit forming an air intake path for air intake into the engine body, the air intake unit having an air intake for drawing air from the atmosphere and connected to at least one air intake on the outer surface of the cylinder head;
an exhaust unit connected to the engine body and forming an exhaust path for exhaust from the engine body;
The air inlet is
(a) positioned forward of the seat in the longitudinal direction of the vehicle and above the at least one intake port of the cylinder head in the vertical direction; or
(b) a saddle-ride type vehicle at least a portion of which is located immediately below the seat in the vertical direction when viewed in the horizontal direction;
a speaker;
an active sound create control device that controls the speaker to generate a sound for a rider seated on the seat to hear,
The speaker is arranged in the air intake unit so that the sound generated by the speaker by the active sound create control device is transmitted from the air intake to the space where the rider seated on the seat is. Characteristic saddle type vehicle.
a noise information acquisition unit that acquires information related to noise generated in the intake unit by driving the engine main body,
The active sound create control device,
causing the speaker to generate a sound for a rider to hear, and causing the speaker to generate a sound for reducing the noise based on the information about the noise acquired by the noise information acquisition unit. 2. The straddle-type vehicle according to claim 1, wherein the speaker is controlled.