JP5869611B2 - Saddle riding vehicle - Google Patents

Description

  The present invention relates to a saddle riding type vehicle. More specifically, the present invention relates to a straddle-type vehicle that controls the opening of a throttle valve with a drive motor.

  Conventionally, there has been an electronic throttle control device, so-called throttle-by-wire (TBW), which electrically detects an operation amount of a throttle grip or an accelerator pedal and controls a throttle valve opening by a motor in accordance with the operation amount. It is known (see, for example, Patent Document 1).

  According to the invention according to Patent Document 1, by connecting some throttle valves among a plurality of throttle valves, the connected throttle valves can be arranged close to each other, and the length in the cylinder arrangement direction is increased. An electronic throttle control device that can be shortened is disclosed.

JP 2004-293437 A

  On the other hand, if the electronic throttle control device is applied to a scooter type vehicle, the intake pipe passes through the top surface of the cylinder. Therefore, if the electronic throttle control device is simply adopted, it restricts the arrangement of other functional parts. Therefore, it is desired to develop an efficient arrangement structure.

  An object of the present invention is to provide a straddle-type vehicle capable of improving the degree of freedom in designing functional parts in a scooter-type vehicle employing an electronic throttle control device.

The present invention includes a vehicle body frame, a cylinder extending in the front-rear direction of the vehicle, provided with an intake port, an engine supported by the vehicle body frame, an air cleaner, and an intake passage connecting the air cleaner and the intake port. A throttle valve that is provided in the intake passage and adjusts the amount of intake air flowing through the intake passage; a throttle motor that opens and closes the throttle valve; a motor driver that drives the throttle motor; And a control device for controlling the drive of the throttle motor via the motor driver, wherein one end of the intake passage is curved downward from above the cylinder and connected to the intake port, and the throttle The valve is a straddle-type vehicle arranged so as to overlap the upper surface of the cylinder in a plan view of the vehicle, and the throttle mode Is viewed from the side of the vehicle, the position sandwiched between the upper surface and the intake passage of the cylinder, and, in a plan view of the vehicle, Ru are arranged so as to at least partially overlaps with the intake passage.

The present invention may be provided with a storage box disposed above the front Symbol intake passage.

The present invention, before Symbol further comprising a starter motor to start the engine, the starter motor is provided on the top surface of the crankcase of the engine, the starter motor and the throttle motor, in a plan view of the vehicle, the width of the vehicle You may arrange | position so that it may mutually overlap in a direction.

The present invention may further comprise a heat shield plate disposed between the upper surface of the front Symbol cylinders and the throttle motor.

The present invention is disposed within the crankcase before SL engine, comprising a generator (ACG) which generates power in conjunction with the engine, the generator is disposed on one side with respect to the vehicle body center line, the motor The driver may be arranged on the other side with respect to the vehicle body center line.

The present invention further includes a fuel tank disposed rearward of the front Symbol storage box, the motor driver may be disposed between the fuel tank and the luggage box.

The present invention, in the upper or top surface of the crankcase before Symbol cylinder, further comprising a boss provided on the left and right sides of the width direction of the vehicle, and a link member connected to the boss, the engine, left and right The boss is a unit swing type engine that is swingably supported by the vehicle body frame via the link member, and the throttle motor is located at a position between the bosses in a top view of the vehicle, and The vehicle may be arranged so that at least a part thereof overlaps with the boss in a side view of the vehicle.

In the present invention, prior SL engine, further comprising a recess and a support portion for supporting the housing of the throttle motor, the housing of the throttle motor is supported in the recess, it is fixed to the support portion Tei May be .

In the present invention, prior SL engine is disposed in the vicinity of the recess, the cooling water for cooling the engine may further comprise a cooling channel flows.

According to the present invention, the throttle motor is disposed at a position sandwiched between the upper surface of the cylinder and the intake passage in a side view of the vehicle, and at least partially overlaps with the intake passage in a plan view of the vehicle. Arranged. Thus, the throttle motor can be arranged by effectively utilizing the dead space formed between the upper surface of the cylinder and the intake passage by connecting the intake passage in a curved manner. Therefore, the influence on the arrangement of other functional components can be reduced.

According to the present invention, the storage box is disposed above the intake passage. Thereby, the throttle motor arranged below the intake passage hardly affects the arrangement of the storage box. Therefore, the capacity of the storage box can be secured.

According to the present invention, the starter motor provided on the upper surface of the crankcase of the engine and the throttle motor are arranged so as to overlap each other in the vehicle width direction in a plan view of the vehicle. Thereby, neither the starter motor nor the throttle motor protrudes greatly in the vehicle width direction from the upper surface of the engine. Therefore, the space on the upper surface of the engine can be used effectively.

According to the present invention, the heat shield is disposed between the upper surface of the cylinder and the throttle motor. As a result, of the heat generated with the operation of the engine, heat from the upper surface of the cylinder closest to the throttle motor can reduce the thermal effect on the throttle motor. Therefore, the heat influence which the heat generated from the engine has on the throttle motor can be effectively suppressed.

According to the present invention, the generator that generates power in conjunction with the engine is disposed on one side with respect to the vehicle body center line, and the motor driver is disposed on the other side with respect to the vehicle body center line. Thereby, the position of the generator and the position of the motor driver can be separated as much as possible. Therefore, it is possible to reduce the influence of the magnetic field generated as the generator generates power on the electric circuit of the motor driver.

According to the present invention, the motor driver is disposed between the storage box and the fuel tank disposed behind the storage box. Thereby, the space between the storage box and the fuel tank can be effectively utilized as the arrangement space for the motor driver. The motor driver is blocked by the storage box at the front and by the fuel tank at the rear. Therefore, the motor driver can be protected from the outside.

According to the present invention, the throttle motor is disposed at a position between the bosses of the unit swing in the top view of the vehicle, and at least partially overlaps with the boss of the unit swing in the side view of the vehicle. . Thereby, the throttle motor can be compactly arranged so as to overlap the boss between the left and right bosses of the unit swing. Therefore, the influence of the space necessary for arranging the throttle motor on the layout of other members can be reduced.

According to the present invention, the housing of the throttle motor is supported by the recess provided in the engine and is fixed to the support provided in the engine. Thereby, the motor case which accommodates a throttle motor becomes unnecessary, and a number of parts can be reduced.

According to the present invention, the cooling water channel through which the cooling water for cooling the engine flows is disposed in the vicinity of the recess. Thereby, a throttle motor can be cooled using the cooling water which distribute | circulates the cooling water path in the vicinity of a recessed part.

1 is a left side view showing a scooter type motorcycle as a saddle riding type vehicle according to a first embodiment of the present invention. FIG. 2 is a left side view showing a partial cross-sectional view of the structure around the engine of the motorcycle according to the first embodiment. 1 is a plan view showing a configuration around an engine of a motorcycle according to a first embodiment. FIG. 2 is a plan view showing a configuration around the engine of the motorcycle of the first embodiment in a partial cross section, and also shows a motor driver. It is a schematic diagram which shows the structure of a throttle body and a throttle motor. FIG. 6 is a left side view showing a partial cross section of a configuration around an engine of a motorcycle according to a second embodiment of the present invention. It is a left side view showing a scooter type motorcycle as a saddle riding type vehicle according to a third embodiment of the present invention. It is a left view which shows the structure around the engine of the motorcycle which concerns on 3rd Embodiment. FIG. 10 is a left side view showing a partial cross section of a configuration around an engine of a motorcycle according to a fourth embodiment of the present invention. It is a front view which shows the structure around the engine of the motorcycle which concerns on 4th Embodiment of this invention in a partial cross section.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, an overall configuration of a scooter type motorcycle 1 as a saddle riding type vehicle according to a first embodiment will be described with reference to FIGS.
FIG. 1 is a left side view showing a scooter type motorcycle as a saddle riding type vehicle according to a first embodiment of the present invention, and FIG. 2 is a left side view showing a part of a configuration around an engine. It is. FIG. 3 is a plan view showing the configuration around the engine of the motorcycle according to the first embodiment, and FIG. 4 is a plan view showing the configuration around the engine in a partial cross section.
In the following description, descriptions of front and rear, left and right, and up and down directions are in accordance with the directions seen from the rider (driver) who rides the motorcycle unless otherwise specified. In the figure, the arrow FR indicates the front of the vehicle, the arrow LH indicates the left side of the vehicle, and the arrow UP indicates the upper side of the vehicle.

  As shown in FIG. 1, the motorcycle 1 of the first embodiment includes a body frame 10, a front wheel 2, a front fork 3 that pivotally supports the front wheel 2, a handle 4 coupled to the front fork 3, and a body frame. 10 is connected to the engine 10 in a swingable manner, an air cleaner 5, an intake passage 30 connecting the air cleaner 5 and the engine 20, a rear wheel 6 as a drive wheel, and a rear wheel 6 attached to the engine 20. , A rear cushion 8, a throttle body 40 having a throttle valve 43 (see FIG. 2), a throttle motor 50 (see FIG. 2) for opening and closing the throttle valve 43, and the throttle motor 50 A motor driver 55 for driving the vehicle, an electronic control device 80 as a control device for controlling the drive of the throttle motor 50, and a passenger ride A seat 91, a storage box 92 disposed below the sheet 91, a fuel tank 93, a body cover 94 covering the vehicle body frame 10, a front fender 95, and a rear fender 96, the mainly.

  The body frame 10 is configured by integrally joining a plurality of types of steel materials by welding or the like. As shown in FIG. 1, the vehicle body frame 10 includes a head pipe 11, a main frame 12, a seat rail 13, a down frame 14, a middle frame 15, a rear frame 16, and a plurality of cross members (not shown). And).

The head pipe 11 is disposed at the front end portion of the vehicle body frame 10.
A pair of main frames 12 are provided on the left and right. The pair of main frames 12 is connected to the head pipe 11 at the front end side. In a side view, the pair of main frames 12 extend obliquely downward and rearward from the head pipe 11, bend in the middle, bend a relatively gentle slope, extend downward and rearward, and then bend again to form a steep slope. It extends backward. The rear ends of the pair of main frames 12 are connected to a down frame 14 and a middle frame 15 as will be described later.

  A pair of seat rails 13 are provided on the left and right. The pair of seat rails 13 is connected to a portion where one end side forms a gentle inclination of the pair of main frames 12. The pair of seat rails 13 are relatively steeply inclined from the connecting portion with the pair of main frames 12 in a side view, extend upward and rearward, bend twice in the middle, and gradually decrease in inclination each time. Due to the third bend, the rear end side extends obliquely downward and rearward. The rear end sides of the pair of seat rails 13 are connected to the rear frame 16 as described later.

  The down frame 14 is disposed below the main frame 12 and is provided as a pair on the left and right. The pair of down frames 14 extend obliquely downward and rearward from the head pipe 11 in a side view, bend in the middle, form a steep slope, and extend downward and rearward to the lower end side. Further, the down frame 14 extends substantially rearward from the lower end side, and is bent halfway and extends slightly upward and rearward. The rear end sides of the pair of down frames 14 are connected to the rear end sides of the pair of main frames 12.

  The middle frame 15 is disposed behind the main frame 12, and a pair is provided on the left and right. One end side of the pair of middle frames 15 is connected to the rear end side of the pair of main frames 12. The pair of middle frames 15 extend upward and rearward with a relatively steep inclination from the connecting portion with the pair of main frames 12 in a side view. The rear end sides of the pair of middle frames 15 are connected to an intermediate portion between the first and second bends of the pair of seat rails 13.

  The rear frame 16 is disposed behind the middle frame 15 and is provided in a pair on the left and right. One end side of the pair of rear frames 16 is connected to a slightly lower part of the connecting portion with the seat rail 13 of the pair of middle frames 15. The pair of rear frames 16 extend upward and rearward substantially parallel to the pair of seat rails 13 from a connecting portion with the middle frame 15 in a side view. The rear end sides of the pair of rear frames 16 are connected to the rear end sides of the pair of seat rails 13.

  A pair of front forks 3 are provided on the left and right. The pair of front forks 3 is disposed in front of the head pipe 11 and substantially parallel to the head pipe 11 and supported by the head pipe 11. The upper ends of the pair of front forks 3 are connected to the lower end of the handle 4. The lower ends of the pair of front forks 3 pivotally support the front wheel 2 in a rotatable manner.

  The cross member (not shown) is made of, for example, a pipe member extending in the left-right direction, and couples a pair of frames (main frame 12, seat rail 13, down frame 14, etc.) in the left-right direction.

  The engine 20 is a prime mover of the motorcycle 1 and is mounted at a substantially central portion of the vehicle body in the front-rear direction as shown in FIG. As will be described later, the engine 20 is a so-called unit swing type engine that is swingably connected to the vehicle body frame 10 (seat rail 13) via a link member 131.

  As shown in FIGS. 1 to 4, the engine 20 is mainly configured by a cylinder head cover 21, a cylinder head 22, a cylinder block 23 as a cylinder, and a crankcase 24. The cylinder head cover 21 is a vehicle. The crankcase 24 is disposed on the rear side of the vehicle. More specifically, the engine 20 is arranged so that the axis of the cylinder block 23 is substantially horizontal. Thereby, the upper surface of the engine 20 is also substantially horizontal. Here, “substantially horizontal” is a concept including a horizontal state and a state slightly inclined (within 20 degrees) from the horizontal state.

  Inside the engine 20 are an intake valve 222 and an exhaust valve 224, a camshaft 211 (see FIG. 4) connected to the intake valve 222 and the exhaust valve 224, a piston 231, a crankshaft 241, and a connecting rod 232. The cam chain 214 (see FIG. 4) connected to the camshaft 211 and connected to the crankshaft 241 is mainly accommodated.

The cylinder head cover 21 and the cylinder head 22 accommodate an intake valve 222, an exhaust valve 224, and a cam shaft 211.
As shown in FIG. 2, the cylinder head 22 includes an intake port 221 formed on the upper surface and an exhaust port 223 formed on the lower surface. An inlet pipe 31 to be described later is connected to the intake port 221.
The intake port 221 is provided at a substantially central portion in the vehicle width direction on the upper surface of the cylinder head 22.
The cylinder block 23 includes a cooling water passage (not shown) through which cooling water for cooling the engine 20 flows.

  In FIG. 4, the crankshaft 241 is rotatably supported via a journal bearing (not shown) of the left crankcase and a journal bearing 241a of the right crankcase 24a. A piston 231 is slidably fitted in a cylinder hole 23 e formed in the cylinder block 23. Both ends of the connecting rod 232 are pivotally supported by the crankshaft 241 and the piston 231, and when the piston 231 reciprocates, the crankshaft 241 rotates accordingly. A combustion chamber 225 is formed on the bottom surface of the cylinder head 22 facing the rising end surface of the piston 231, and a spark plug 226 is attached from the side of the cylinder head 22, and the tip of the combustion chamber 225 is disposed so as to face the combustion chamber 225.

  A cam shaft 211 is supported between the cylinder head 22 and the cylinder head cover 21 in parallel with the crankshaft 241, and the intake valves 222 and the exhaust valves 224 are opened and closed by cams 211 a and 211 b provided on the cam shaft 211. The camshaft 211 is rotationally driven by the crankshaft 241 by a cam chain 214 wound between a drive sprocket 213 provided at the right portion of the crankshaft 241 and a driven sprocket 212 provided at the right end of the camshaft 211. Is done.

The right crankcase 24a includes a right crankcase cover 242a on the right outer side. A stator 71 is fixed to the inner surface of the right crankcase cover 242a. A rotor 72 surrounding the stator 71 is fixed to the crankshaft 241. The stator 71 and the rotor 72 constitute a generator (ACG) 70.
A starter driven gear 76 is provided adjacent to the generator (ACG) 70. The starter driven gear 76 is a gear for the crankshaft 241 to receive rotational driving from the starter motor 75.

  As shown in FIG. 3, the starter motor 75 is disposed on the upper surface of the crankcase 24. The starter motor 75 applies rotational power to the crankshaft 241 when the engine 20 is started.

The starter motor 75 and the throttle motor 50 are arranged so as to overlap each other in the width direction of the vehicle in a plan view of the vehicle. Here, the relationship in which the starter motor 75 and the throttle motor 50 overlap each other in the vehicle width direction in a plan view of the vehicle refers to the following relationship.
In other words, if the position of the throttle motor 50 is moved in the vehicle front-rear direction (backward) without moving in the vehicle width direction, at least a portion thereof overlaps the starter motor 75 in plan view. It is. In this case, the vertical positional relationship between the throttle motor 50 and the starter motor 75 does not matter.
In addition, if the position of the starter motor 75 is moved in the vehicle front-rear direction (forward) without moving in the vehicle width direction, at least a portion of the starter motor 75 overlaps the throttle motor 50 in plan view. It is. Also in this case, the vertical positional relationship between the throttle motor 50 and the starter motor 75 does not matter.

  In the motorcycle 1 of the first embodiment, the starter motor 75 and the throttle motor 50 are arranged so as to overlap each other in the width direction of the vehicle in a plan view of the vehicle as described above. However, an embodiment in which the starter motor 75 and the throttle motor 50 are not arranged in such a relationship is possible.

As shown in FIGS. 2 and 3, the crankcase 24 is provided with a pair of bosses 25 to which the above-described link member 131 is coupled. The pair of bosses 25 are provided in the vicinity of both ends in the vehicle width direction on the front end side of the upper surface of the crankcase 24. The engine 20 is slidably connected to the vehicle body frame 10 via a link member 131 and a support plate 132 at a boss 25.
A pair of support plates 132 are provided on the left and right. The pair of support plates 132 is disposed at a position slightly sandwiched between the pair of seat rails 13 and the pair of middle frames 15 and fixed to the seat rails 13 and the middle frame 15.

  As shown in FIGS. 1 and 3, in the link member 131, both ends of a cross portion 131a extending between the pair of left and right support plates 132 are pivotally supported on the support plate 132 by a pair of left and right pivot shafts 131b. A pair of left and right arm portions 131c extending substantially parallel to each other are formed at both ends of the cross portion 131a. The arm portion 131c swings around the pivot shaft 131b. A support portion (not shown) that supports the pair of left and right bosses 25 of the crankcase 24 is formed on the distal end side of the pair of left and right arm portions 131c.

In the engine 20 described above, the reciprocating motion of the piston 231 disposed inside the cylinder block 23 is converted into the rotational motion of the crankshaft 241 via the connecting rod 232. The output of the engine 20 is transmitted to the rear wheel 6 through the power transmission device 7.
The rotation of the crankshaft 241 is transmitted to the camshaft 211 via the cam chain 214 to operate the intake valve 222 and the exhaust valve 224.

  The power transmission device 7 transmits the driving force of the engine 20 to the rear wheel 6. Moreover, this power transmission device 7 supports the rear wheel 6 rotatably. The power transmission device 7 is disposed on the left end side in the vehicle width direction.

  A pair of rear cushions 8 are provided on the left and right. The left rear cushion 8 is connected to the rear end portion of the seat rail 13 on the upper end side, and is connected to the rear end portion of the power transmission device 7 on the lower end side. The right rear cushion (not shown) is connected to the rear end portion of the seat rail 13 on the upper end side, and is connected to the swing arm (not shown) on the lower end side.

An occupant (driver and rear passenger) seat 91 is supported on top of the pair of seat rails 13.
The storage box 92 is disposed below the seat 91. More specifically, the storage box 92 is disposed in a space formed above the engine 20 and below the seat 91.

The fuel tank 93 is disposed in a space surrounded by the main frame 12 and the down frame 14 in front of the engine 20.
The front fender 95 is fixed to the front fork 3 and covers the upper part of the front wheel 2. The rear fender 96 is fixed to the seat rail 13 and covers the upper part of the rear wheel 6.

  The air cleaner 5 purifies the air supplied to the engine 20. The air cleaner 5 includes a hollow air cleaner case and an air cleaner element (not shown) that is housed in the air cleaner case and filters air. As shown in FIGS. 1 and 3, the air cleaner 5 is disposed on the upper portion of the muffler 97 on the right end side in the vehicle width direction.

  The intake passage 30 connects the air cleaner 5 and the intake port 221 and forms an intake passage between the air cleaner 5 and the engine. As shown in FIGS. 2 and 3, the intake passage 30 extends from the intake port 221 toward the crankcase 24 and is disposed so as to form a predetermined space with the upper surface of the engine 20. More specifically, as shown in FIG. 3, the intake passage 30 is configured to have a bent portion 30 a that is bent at a portion located on the upper surface of the crankcase 24, and extends rearward from the intake port 221. The bent portion 30a is bent to one (right) side in the vehicle width direction and connected to the air cleaner 5.

As shown in FIG. 2, the intake passage 30 includes an inlet pipe 31 connected to the intake port 221, a throttle body 40 connected to the rear end of the inlet pipe 31, a rear end of the throttle body 40, and an air cleaner 5. And a connecting tube 32 connected to each other.
In addition, the inlet pipe 31 that forms one end of the intake passage 30 has a curved shape from the upper side to the lower side of the cylinder.
The inlet pipe 31 is provided with an injector 33 for injecting fuel.

  Next, the configuration of the throttle body 40 and the throttle motor 50 will be described. FIG. 5 is a diagram schematically showing the configuration of the throttle body 40 and the throttle motor 50.

  As shown in FIG. 5, the throttle body 40 is disposed in the body main body 41, the intake flow passage 42 that penetrates the body main body 41 and forms a part of the intake passage 30, and the intake flow passage 42. A throttle valve 43 that opens and closes the intake flow passage 42, an opening sensor 44 that detects the opening of the throttle valve 43, a speed reduction mechanism 60 that is disposed between the throttle valve 43 and the throttle motor 50, and a throttle A rotation angle sensor that detects a rotation angle of the rotation shaft 51 of the motor 50.

The body main body 41 is configured as a housing that houses a throttle valve 43, an opening degree sensor 44, a speed reduction mechanism 60, and a rotation angle sensor.
The intake flow passage 42 is provided so as to penetrate the body main body 41 in the front-rear direction of the vehicle.

  As shown in FIG. 5, the throttle valve 43 is a so-called butterfly valve having an opening / closing shaft 43a extending in a direction orthogonal to the direction in which the intake flow passage 42 extends, and rotating about the opening / closing shaft 43a. More specifically, the throttle valve 43 is configured such that the distal end side and the proximal end side of the opening / closing shaft 43a are rotatably supported by the body main body 41 via bearings (not shown), so that the opening / closing shaft 43a is centered on the rotation. It is comprised so that rotation is possible.

  The opening sensor 44 is disposed on the distal end side of the opening / closing shaft 43a, and detects the opening of the throttle valve 43 by detecting the rotation angle of the opening / closing shaft 43a. The opening sensor 44 is connected to an electronic control device 80 described later. A detection signal (detection value) from the opening sensor 44 is output to the electronic control unit 80.

The throttle motor 50 generates a rotational output for driving the throttle valve 43. The throttle motor 50 is constituted by a cylindrical DC motor and is accommodated in a motor case 54.
The rotational force of the rotating shaft 51 of the throttle motor 50 is transmitted to the opening / closing shaft 43 a of the throttle valve 43 through the speed reduction mechanism 60. The speed reduction mechanism 60 is accommodated in a speed reduction mechanism case 66.
The motor case 54 and the speed reduction mechanism case 66 are configured integrally with the throttle body 40.
In a state where the throttle body 40, the motor case 54, and the speed reduction mechanism case 66 are integrally assembled, the rotation shaft 51 of the throttle motor 50 and the opening / closing shaft 43a of the throttle valve 43 are arranged in parallel.

The deceleration mechanism 60 decelerates the rotational speed of the rotational output generated by the throttle motor 50 and transmits it to the opening / closing shaft 43 a of the throttle valve 43. As shown in FIG. 5, the speed reduction mechanism 60 rotates to support the first gear 61, the second gear 63, the second gear 63, the third gear 64, the second gear 63, and the third gear 64. A shaft 62 and a fourth gear 65 are provided.
The first gear 61 is attached to the rotating shaft 51 of the throttle motor 50. The first gear 61 is a relatively small diameter spur gear.
The second gear 63 is attached to the rotating shaft 62. The rotary shaft 62 is arranged in parallel between the rotary shaft 51 of the throttle motor 50 and the opening / closing shaft 43a of the throttle valve 43. Both ends of the rotating shaft 62 are rotatably supported by the motor case 54 via bearings (not shown). The second gear 63 is a relatively large diameter spur gear and meshes with the first gear 61.
The third gear 64 is attached to the rotating shaft 62. The third gear 64 is a relatively small diameter spur gear.
The fourth gear 65 is attached to the opening / closing shaft 43 a of the throttle valve 43. The fourth gear 65 is a relatively large diameter spur gear (semicircle) and meshes with the third gear 64.

The rotation angle sensor is disposed on the distal end side of the rotation shaft 51 of the throttle motor 50 and detects the rotation angle of the rotation shaft 51.
The rotation angle sensor is connected to an electronic control device 80 described later. A detection signal (detection value) from the rotation angle sensor is output to the electronic control unit 80.

As shown in FIGS. 2 and 3, the throttle body 40 and the motor case 54 are disposed on the upper surface 23 a of the cylinder block 23. The throttle motor 50 is disposed at a position sandwiched between the upper surface 23a of the cylinder block 23 and the intake passage 30 in a side view of the vehicle. The throttle motor 50 is arranged so that at least a part thereof overlaps the intake passage 30 in a plan view of the vehicle.
More specifically, the throttle body 40 is disposed along a direction approximate to the front-rear direction of the vehicle in plan view. At this time, the opening / closing shaft 43a of the throttle valve 43 extends substantially horizontally in a direction orthogonal to the direction in which the throttle body 40 extends. The speed reduction mechanism case 66 is disposed on the left side in the vehicle width direction with respect to the throttle body 40. A fourth gear 65 housed on the upper side of the speed reduction mechanism case 66 is attached to the left end side of the opening / closing shaft 43 a of the throttle valve 43. The motor case 54 extends from the lower half of the speed reduction mechanism case 66 to the right side in the vehicle width direction. A first gear 61 accommodated in the lower side of the speed reduction mechanism case 66 is attached to a rotary shaft 51 that extends from the throttle motor 50 accommodated in the motor case 54 to the left side in the vehicle width direction.

Further, the upper side of the speed reduction mechanism case 66 is disposed on the front side of the throttle body 40 in a side view from the left side of the vehicle. The motor case 54 extending toward the back side on the lower side of the speed reduction mechanism case 66 is disposed on the lower side of the throttle body 40.
That is, the throttle motor 50 housed in the motor case 54 is disposed at a position (space) sandwiched between the upper surface 23a of the cylinder block 23 and the throttle body 40 in a side view. The throttle motor 50 is disposed so as to at least partially overlap the throttle body 40 in plan view.

Further, as shown in FIGS. 2 and 3, the throttle motor 50 is at least one in a position between the left and right bosses 25 in the unit swing type engine 20 in a top view of the vehicle and in a side view of the vehicle. The portion is arranged so as to overlap the boss 25.
More specifically, as shown in FIG. 3, in a top view of the vehicle, the throttle motor 50 is disposed between the left and right bosses 25 supported by the left and right arm portions 131 c of the link member 131. The In addition, as shown in FIG. 2, in a side view of the vehicle, the throttle motor 50 is at least partially boss 25 at a position sandwiched between the upper surface 23a of the cylinder block 23 and the throttle body 40 (intake passage 30). It is arranged so as to overlap.

  In the motorcycle 1 of the first embodiment, the throttle motor 50 is at least one in the position between the left and right bosses 25 in the unit swing type engine 20 in a top view of the vehicle and in a side view of the vehicle. The parts are arranged in a positional relationship such that the part overlaps the boss 25. However, an embodiment in which the throttle motor 50 is not arranged in such a positional relationship is possible.

  According to the throttle body 40 and the throttle motor 50 described above, the rotational output generated by the throttle motor 50 is transmitted in the order of the first gear 61, the second gear 63, the third gear 64, and the fourth gear 65. The rotation output generated by the throttle motor 50 is decelerated according to the reduction ratio set for each gear while being transmitted by each gear, and rotates the opening / closing shaft 43a of the throttle valve 43. Specifically, the rotation output generated by the throttle motor 50 is high and low torque. The rotation output is decelerated by the reduction mechanism 60, so that the rotation output is converted into a rotation output with high torque and low rotation.

The motor driver 55 drives the throttle motor 50.
The electronic control unit (ECU) 80 includes a microcomputer. The electronic control unit 80 controls driving of the throttle motor 50 via the motor driver 55 in response to an input from a throttle grip (not shown) as an operator operated by the driver. Specifically, the rotation of the throttle motor 50 is controlled. Further, the electronic control unit 80 detects a failure of the throttle motor 50 by comparing the detection value detected by the rotation angle sensor and the detection value detected by the opening degree sensor 44. The electronic control unit 80 performs various basic controls (such as ignition timing control and fuel injection control of the engine 20) of the motorcycle 1 based on signals from various sensors (not shown).

As shown in FIG. 1, the electronic control unit (ECU) 80 stays on the seat rail 13 and the rear frame 16 in the vicinity of the rear end side of the seat rail 13 and the rear frame 16 arranged on the left side in the vehicle width direction. It is attached via (not shown).
The motor driver 55 is attached to the seat rail 13 and the rear frame 16 disposed on the left side in the width direction of the vehicle slightly ahead of the electronic control unit (ECU) 80 via a stay (not shown).

As described above with reference to FIG. 4, the generator (ACG) 70 is disposed inside the right crankcase cover 242 a of the engine 20.
The motor driver 55 is attached to the seat rail 13 and the rear frame 16 disposed on the left side in the vehicle width direction.
That is, the generator (ACG) 70 that generates power in conjunction with the engine 20 is disposed on one side (right side) with respect to the vehicle body center line, and the motor driver 55 is disposed on the other side (left side) with respect to the vehicle body center line. Is arranged.

  In the motorcycle 1 of the first embodiment, the generator (ACG) 70 is disposed on one side (right side) with respect to the vehicle body center line, and the motor driver 55 is disposed on the other side (left side with respect to the vehicle body center line). ). However, an embodiment in which the generator (ACG) 70 and the motor driver 55 are not arranged in such a positional relationship is possible.

  The motorcycle 1 according to the first embodiment described above has the following effects.

  The throttle motor 50 is positioned between the upper surface 23a of the cylinder block 23 and the throttle body 40 (intake passage 30) in a side view of the vehicle, and at least a part of the throttle motor 40 in a plan view of the vehicle. Arranged so as to overlap (intake passage 30). Thereby, the throttle motor 50 can be disposed by effectively utilizing the dead space formed between the upper surface 23a of the cylinder block 23 and the throttle body 40 (intake passage 30). Therefore, the influence on the arrangement of other functional components can be reduced.

  The storage box 92 is disposed above the intake passage 30. As a result, the throttle motor 50 disposed below the intake passage 30 does not easily affect the arrangement of the storage box 92. Therefore, the capacity of the storage box 92 can be secured.

  Further, the starter motor 75 and the throttle motor 50 provided on the upper surface of the crankcase 24 are arranged so as to overlap each other in the width direction of the vehicle in a plan view of the vehicle. Thereby, neither the starter motor 75 nor the throttle motor 50 protrudes greatly from the upper surface of the engine 20 in the vehicle width direction. Therefore, the space on the upper surface of the engine 20 can be used effectively.

  Further, a generator (ACG) 70 that generates power in conjunction with the engine 20 is arranged on the right side with respect to the vehicle body center line, and the motor driver 55 is arranged on the left side with respect to the vehicle body center line. Thereby, the position of the generator 70 and the position of the motor driver 55 can be separated as much as possible. Therefore, the influence of the magnetic field generated as the generator 70 generates power on the electric circuit of the motor driver 55 can be reduced.

  Further, the throttle motor 50 is arranged at a position between the bosses 25 of the unit swing in the top view of the vehicle and so as to at least partially overlap the boss 25 of the unit swing in the side view of the vehicle. Thereby, the throttle motor 50 can be compactly arranged so as to overlap the boss 25 between the left and right bosses 25 of the unit swing. Therefore, the influence of the space necessary for arranging the throttle motor 50 on the layout of other members can be reduced.

Next, a second embodiment of the saddle riding type vehicle according to the present invention will be described with reference to FIG. FIG. 6 is a left side view showing a partial cross section of the configuration around the engine of the motorcycle according to the second embodiment.
In the description after the second embodiment, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.

The motorcycle 1 of the second embodiment is different from the first embodiment in the heat shield structure between the cylinder block 23 and the throttle motor 50.
More specifically, as shown in FIG. 6, in the second embodiment, the heat shield plate 101 is disposed between the upper surface 23 a of the cylinder block 23 and the upper surface of the crankcase 24 connected thereto and the throttle motor 50. Has been.
The engine 20 generates heat during its operation. This heat is dissipated from the entire periphery of the engine 20. The throttle motor 50 is disposed at a position sandwiched between the upper surface 23a of the cylinder block 23 and the throttle body 40 (intake passage 30). Therefore, the throttle motor 50 is most susceptible to the thermal effect of the engine 20 from the upper surface 23 a of the cylinder block 23. In order to minimize this thermal influence, a heat shield plate 101 is disposed between the upper surface 23a of the cylinder block 23 and the throttle motor 50.

According to the motorcycle 1 of the second embodiment, in addition to the same effects as the first embodiment, the following effects can be obtained.
The heat shield plate 101 is disposed between the upper surface 23 a of the cylinder block 23 and the throttle motor 50. Thereby, of the heat generated with the operation of the engine 20, the heat from the upper surface 23 a of the cylinder block 23 closest to the throttle motor 50 can reduce the thermal effect on the throttle motor 50. Therefore, the heat influence which the heat generated from the engine 20 has on the throttle motor 50 can be effectively suppressed.

  Next, a third embodiment of the saddle riding type vehicle according to the present invention will be described with reference to FIGS. FIG. 7 is a left side view showing the scooter type motorcycle 1 according to the third embodiment. FIG. 8 is a left side view showing the configuration around the engine.

  The motorcycle 1 of the third embodiment mainly includes the structure of the body frame 10, the suspension structure of the unit swing type engine 20, the arrangement of the air cleaner 5, the arrangement of the storage box 92, and the arrangement of the fuel tank 93. And different.

  In the third embodiment, as shown in FIG. 7, the vehicle body frame 10 includes a head pipe 11, a main frame 12, a rear frame 16, a front frame 17, and a plurality of cross members (not shown). Prepare. The vehicle body frame 10 includes a low floor type floor 18.

The head pipe 11 is disposed at the front end portion of the vehicle body frame 10.
A pair of main frames 12 are provided on the left and right. The pair of main frames 12 is connected to the head pipe 11 at the front end side. The pair of main frames 12 are integrally provided with a down frame portion 12a, a lower frame portion 12b, a rising frame portion 12c, and a seat rail portion 12d.

The pair of down frame portions 12a, when viewed from the side, extend steeply from the head pipe 11 obliquely downward and rearward, bend at the lower end side, and reach one end side of the lower frame portion 12b.
The pair of lower frame portions 12b extend rearward from one end side through the lower side of the low-floor type floor 18 in a side view, extend substantially rearward, and bend at the rear end side behind the floor 18 to rise to rise frame portion 12c. To one end of
The pair of rising frame portions 12c, when viewed from the side, are steeply inclined from one end side to rise and extend obliquely upward and rearward, bend at the rear end side, and reach one end side of the seat rail portion 12d.
The pair of seat rail portions 12d extend obliquely upward and rearward with a relatively gentle inclination from one end side in a side view.

  A pair of front frames 17 are provided on the left and right. The pair of front frames 17 is connected to the head pipe 11 at the front end side. The pair of front frames 17 extend obliquely downward and rearward from the head pipe 11 in a side view, and the rear end side is connected to the front end side of the lower frame portion 12 b in the main frame 12.

  A pair of rear frames 16 are provided on the left and right. The pair of rear frames 16 are connected to the rear end side of the lower frame portion 12b of the main frame 12 at one end side in a side view. The pair of rear frames 16 extend substantially rearward from one end side in a side view, bend in the middle, and extend obliquely upward and rearward substantially parallel to the rising frame portion 12c of the main frame 12. 12 is connected to the vicinity of one end side of the seat rail portion 12d.

As shown in FIG. 8, the unit swing type engine 20 has a boss 25 provided in the vicinity of both ends in the width direction of the vehicle on the lower surface of the cylinder block 23, with respect to the vehicle body frame 10 via a link member 131 and a support plate 132. And can be pivoted.
A pair of support plates 132 are provided on the left and right. The pair of support plates 132 are arranged at positions sandwiched between the lower part of the pair of rising frame parts 12 c and the lower part of the pair of rear frames 16, and are fixed to the rising frame part 12 c and the rear frame 16.

  In the link member 131, both ends of a cross portion (not shown) extending between the pair of left and right support plates 132 are pivotally supported on the support plate 132 by a pair of left and right pivot shafts 131b. A pair of left and right arm portions 131c extending substantially parallel to each other are formed at both ends of the cross portion. The arm portion 131c swings around the pivot shaft 131b. A support portion (not shown) that supports the pair of left and right bosses 25 of the cylinder block 23 is formed on the distal end side of the pair of left and right arm portions 131c.

As shown in FIGS. 7 and 8, the air cleaner 5 is disposed at the upper portion of the power transmission device 7 on the left end side in the vehicle width direction, and is connected to the crankcase 24 and the power transmission device 7.
The storage box 92 is disposed below the seat 91 for one passenger.
The fuel tank 93 is disposed behind the storage box 92.

The motor driver 55 is disposed between the storage box 92 and a fuel tank 93 disposed behind the storage box 92.
More specifically, a boss (not shown) is provided on the back surface of the storage box 92, and an insert nut is embedded in the boss. The motor driver 55 is fixed to the insert nut using a bolt.

According to the motorcycle 1 of the third embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
The motor driver 55 is disposed between the storage box 92 and the fuel tank 93 disposed behind the storage box 92. As a result, the space between the storage box 92 and the fuel tank 93 can be effectively utilized as the arrangement space for the motor driver 55. Further, the motor driver 55 is blocked by the storage box 92 at the front thereof and by the fuel tank 93 at the rear thereof. Therefore, the motor driver 55 can be protected from the outside.

  Next, a fourth embodiment of the saddle riding type vehicle according to the present invention will be described with reference to FIGS. FIG. 9 is a left side view showing a partial cross-sectional view of the structure around the engine of the motorcycle according to the fourth embodiment, and FIG. 10 is a front view.

The motorcycle 1 of the fourth embodiment is different from the first embodiment in the configuration of the motor case 54 of the throttle motor 50 and the cooling structure of the throttle motor 50.
As shown in FIG. 9, in the fourth embodiment, the throttle motor 50 is not accommodated in the motor case 54. That is, the motor case 54 is not provided.

  More specifically, a recess 23 b and a motor support protrusion 23 c as a support portion are formed integrally with the cylinder block 23 on the upper surface of the cylinder block 23 of the engine 20. The recess 23b is adapted to the shape of the lower part of the housing 52 of the throttle motor 50 itself with the central axis substantially horizontal. Further, the motor support protrusion 23c attaches the throttle motor 50 using the attachment holes 53 provided at four locations around the housing 52 in a state where the lower portion of the housing 52 is placed in the recess 23b. At this time, as shown in FIG. 10, the throttle motor 50 is attached to either the left or right side (right side) of the motor support protrusion 23c. A speed reduction mechanism case 66 is disposed on the other side (left side) of the motor support protrusion 23c. The speed reduction mechanism 60 housed in the speed reduction mechanism case 66 reduces the rotational force from the rotation shaft 51 of the throttle motor 50 to the opening / closing shaft 43a of the throttle valve 43 in the throttle body 40 attached to a predetermined position of the intake passage 30. Configured to communicate.

  Further, as shown in FIG. 10, in the fourth embodiment, a water jacket 23 d as a cooling water channel is formed in the vicinity of the recess 23 b on the upper surface of the cylinder block 23 of the engine 20. The water jacket 23d is connected to a radiator (not shown) of the vehicle via a water channel (not shown), and the cooling water circulates while circulating.

According to the motorcycle 1 of the fourth embodiment, in addition to the same effects as in the first embodiment, the following effects can be obtained.
The housing 52 of the throttle motor 50 is supported by a recess 23b formed on the upper surface of the cylinder block 23 of the engine 20, and is fixed to the motor support protrusion 23c. As a result, the motor case 54 that houses the throttle motor 50 becomes unnecessary, and the number of parts can be reduced.

  Further, a water jacket 23d through which cooling water for cooling the engine 20 flows is disposed in the vicinity of the recess 23b in the vicinity of the recess 23b on the upper surface of the cylinder block 23 of the engine 20. Thereby, the throttle motor 50 can be cooled using the cooling water which distribute | circulates the water jacket 23d in the vicinity of the recessed part 23b.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can be implemented in various forms.
For example, in the first to fourth embodiments, the present invention is applied to a scooter type motorcycle as a saddle type vehicle, but the present invention is not limited to this. That is, the present invention may be applied to a three-wheel or four-wheel straddle-type vehicle. That is, the saddle riding type vehicle includes all vehicles that ride on the vehicle body.

5 Air cleaner 10 Body frame 20 Engine 23 Cylinder block (cylinder)
23b Concave part 23c Motor support protrusion (support part)
23d Water jacket (cooling water channel)
24 Crankcase 25 Boss 30 Intake passage 43 Throttle valve 50 Throttle motor 52 Housing 55 Motor driver 70 Generator (ACG)
75 Starter motor 80 Electronic control unit (ECU)
92 Storage box 93 Fuel tank 101 Heat shield 131 Link member 221 Air intake

Claims (5)

A body frame (10);
A unit swing engine (20) coupled to the vehicle body frame (10) so as to be swingable via a link member (131) below the cylinder block (23);
An air cleaner (5) disposed above a power transmission device (7) for transmitting power from the engine (20) to the rear wheel (6);
An intake passage (30) connecting the air cleaner (5) and an intake port (221) of the engine (20);
A storage box (92) disposed above the intake passage (30);
A throttle valve (43) provided in the intake passage (30) for adjusting the amount of intake air flowing through the intake passage (30);
A throttle motor (50) for opening and closing the throttle valve (43),
One end portion of the intake passage (30) is a saddle-ride type vehicle that curves downward from above the cylinder block (23) and is connected to the intake port (221).
The throttle motor (50) is located at a position sandwiched between the upper surface of the cylinder block (23) and the intake passage (30) in a side view of the vehicle, and at least partially in a plan view of the vehicle. Arranged to overlap the intake passage (30),
The intake passage (30) is arranged so as to be sandwiched between the storage box (92) and the throttle motor (50) in a side view of the vehicle ,
The vehicle body frame (10) includes a down frame portion (12a), a lower frame portion (12b), and a rising frame portion (12c).
The throttle motor (50) is a straddle-type vehicle that in a side view of the vehicle, characterized in Rukoto have said is disposed behind the rising frame portion (12c).   A speed reduction mechanism case (66) that houses a speed reduction mechanism (60) that transmits the rotational force of the throttle motor (50) is closer to the air cleaner (5) than the intake passage (30) in the vehicle width direction. The straddle-type vehicle according to claim 1, wherein the straddle-type vehicle is disposed.   The bottom surface of the storage box (92) is provided to be inclined rearward and upward, and the intake passage (30) is also provided to be inclined rearward and upward toward the air cleaner (5). The saddle riding type vehicle described in 1.   A straight line connecting the rotation shaft (51) of the throttle motor (50) and the opening / closing shaft (43a) of the throttle valve (43) with respect to the axis of the intake passage (30) passing through the throttle valve (43) is The straddle-type vehicle according to any one of claims 1 to 3, wherein the straddle-type vehicle is disposed at a non-orthogonal position. In a side view of the vehicle, an axis of an injector (33) provided in the intake passage (30), a rotation shaft (51) of the throttle motor (50), and an opening / closing shaft (43a) of the throttle valve (43) The straddle-type vehicle according to any one of claims 1 to 4 , wherein the connecting straight line is arranged so as to intersect at a lower side of the intake passage (30).

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