JP2001233277A - Motorcycle with supercharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motorcycle having a supercharger without disturbing getting on and off and driving, capable of simplifying structure for crankshaft drive as much as possible to suppress cost increase, and capable of improving responsiveness of the supercharger to a throttle operation. SOLUTION: In a motorcycle equipped with a generator 36 at an end part of the crankshaft 26 installed in the direction of a vehicle width and the supercharger 61 rotatably by the crankshaft 26, the supercharger 61 is installed at the outside of the generator 36 and is connected to the crankshaft 26 through a joint 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle provided with a supercharger driven to rotate by a crankshaft.

[0002]

2. Description of the Related Art In recent years, motorcycles have been studied to include a supercharger for compressing air from an air cleaner and supplying the compressed air to a combustion chamber from the viewpoint of improving engine output. As this type of supercharger, there is one having a structure in which a rotor housed in a housing is rotationally driven by a crankshaft of an engine. For this reason, it is preferable to arrange the supercharger as close as possible to the crankshaft.

[0003]

When the supercharger is arranged near the crankshaft, it may hinder getting on and off or driving depending on the position of the supercharger.
Therefore, it is conceivable to arrange the turbocharger in the vehicle body cover so as not to disturb the getting on and off and driving. However, if it is arranged in the vehicle body cover, the helmet storage space, the fuel tank capacity, and the like may be sacrificed accordingly.

[0004] Further, when a structure in which a new drive system is provided between the supercharger and the crankshaft to drive the supercharger is adopted, the structure around the engine becomes complicated and the cost increases. Occurs.

On the other hand, when the above-mentioned supercharger is employed in a scooter type motorcycle equipped with a unit swing type engine, the response of the supercharger to the throttle operation is likely to be delayed due to the relatively small engine displacement. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and does not hinder getting on and off or driving, and can simplify the structure for driving the crankshaft as much as possible to suppress an increase in cost. It is an object of the present invention to provide a motorcycle including a supercharger capable of improving the response of the supercharger to a throttle operation.

[0007]

According to a first aspect of the present invention, a generator is disposed at an end of a crankshaft disposed in a vehicle width direction, and a supercharger is rotated by the crankshaft. In a motorcycle provided with a motor, the supercharger is disposed outside the generator, and is connected to the crankshaft via a joint.

According to a second aspect of the present invention, a V-belt type continuously variable transmission is provided at one end of a crankshaft arranged in the vehicle width direction, and a supercharger rotationally driven by the crankshaft is provided. In the motorcycle provided with the above-mentioned structure, the supercharger is arranged on the opposite side of the V-belt type continuously variable transmission, and is connected to the crankshaft via a joint.

According to a third aspect of the present invention, in the first or second aspect, the supercharger is fixed to an engine, and a suction port is formed below the supercharger and a discharge port is formed above the supercharger. A surge tank and a carburetor are arranged in an intake passage connected to the discharge port and located above the supercharger.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the supercharger is disposed outside a suction port of a cooling cover for an engine cooling fan.

According to a fifth aspect of the present invention, in the fourth aspect, the interior of the housing of the supercharger is divided into a rotor chamber in which a rotor is housed and a gear chamber in which gears for driving the rotor are housed. The gear chamber is located on the inner side in the vehicle width direction and near the suction port of the cooling cover.

[0012]

According to the motorcycle according to the first and second aspects of the present invention, the supercharger is disposed outside the generator disposed at the end of the crankshaft, so that the helmet storage space and the fuel tank capacity are provided. Can be arranged without sacrificing power, and interference with the supercharger when getting on / off or driving can be prevented.

Further, since the above-mentioned supercharger is directly connected to the crankshaft via a joint, the supercharger can be arranged without providing a new drive system which involves a large change around the engine. The structure for driving the shaft can be simplified, and the increase in cost can be suppressed.

Further, since the supercharger is directly connected to the crankshaft, the supercharger is always driven to rotate when the engine is started. Therefore, the responsiveness of the supercharger to the throttle operation can be improved, and the scooter having a small displacement can be obtained. Drivability when mounted on a vehicle such as a vehicle can be improved.

According to the third aspect of the present invention, the turbocharger is mounted on and fixed to the engine, and the surge tank and the carburetor are mounted and fixed on the intake system above the supercharger. This makes it unnecessary to change the assembly process when externally attaching the turbocharger, or to change the assembly process depending on whether or not the turbocharger is provided.

Since the supercharger, surge tank, and carburetor are mounted on the engine, they can be centrally disposed around the engine, and the intake path from the supercharger to the engine can be shortened. The responsiveness to the throttle operation can be improved, and the reliability against air leakage and the like can be secured.

According to the fourth aspect of the present invention, since the supercharger is disposed outside the suction port of the cooling cover, the supercharger is constantly cooled by a cooling fan that blows cooling air to the engine from idling to running. Thus, problems such as unstable operation due to temperature rise can be avoided.

According to the fifth aspect of the present invention, the inside of the housing of the supercharger is divided into a rotor chamber and a gear chamber located inside in the vehicle width direction, and the gear chamber is located near the suction port of the cooling cover. Therefore, the lubricating oil filled in the gear chamber can be constantly cooled by the cooling fan, and the deterioration of the lubricating oil can be suppressed.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 6 are views for explaining a motorcycle provided with a supercharger according to one embodiment of the present invention. FIG. 1 is a side view of a scooter type motorcycle equipped with a supercharger. FIG. 2, FIG. 2 is a plan view of a power unit, FIG. 3 is a cross-sectional plan view of a mounting portion of a supercharger of an engine, FIG. 4 is a side view of a rotor of the supercharger, and FIG. ,
FIG. 6 is an assembly process diagram of the rotor. In the present embodiment, left, right, front and back mean left, right, front and back as viewed in the vehicle traveling direction.

In FIG. 1, reference numeral 1 denotes a scooter-type motorcycle, and a body frame 2 of the scooter-type motorcycle has an underbone type, and a main frame 4 having a substantially L-shape in side view extending obliquely downward and rearward is joined to a head pipe 3. In addition, it has a schematic structure in which left and right rear frames 5 and 5 extending diagonally upward and rearward are joined to the rear end of the main frame 4. At the lower end of the head pipe 3, a front fork 7 for pivotally supporting the front wheel 6 is pivotally supported to be steerable left and right. A steering handle 8 is fixed to the upper end of the front fork 7.

The steering handle 8 has a handle cover 9a.
The front side of the head pipe 3 is covered with a front cover 9b, and the rear side is covered with a leg shield cover 9.
c. On the upper surface of the lower horizontal portion 4a of the main frame 4, a foot board cover 9d constituting a footrest portion is provided, and on the left and right sides of the rear frame 5, side covers 9e are provided. The seat 11 is disposed on the upper portion of the side cover 9e.
A storage box 10 for storing a helmet and the like and a fuel tank 12 are provided in a lower side cover 9e.

A swing type power unit 15 is pivotally supported on the rear frame 5 below the seat 11 by a suspension bracket (not shown) so as to be vertically swingable. The power unit 15 is formed by integrally connecting a V-belt drive type continuously variable transmission 21 to an engine 20, and a rear wheel 16 is supported at the rear end of the power unit 15. A rear suspension (not shown) is provided between the rear end of the power unit 15 and the rear frame 5.

The engine 20 is an air-cooled four-stroke single-cylinder engine. A cylinder axis is substantially formed on the front mating surface of a unit case 19 integrally formed with a transmission case body 18 extending rearward of the vehicle on the left side of a crankcase 17. Cylinder block 22 and cylinder head 2 arranged horizontally
3 and a piston 24 is slidably inserted into a cylinder bore of the cylinder block 22 and the piston 24 is connected to a crankshaft 26 via a connecting rod 25.
The structure is connected to the crank pin 26a of the above.

A camshaft 27 for opening and closing an intake valve and an exhaust valve (not shown) is housed in the cylinder head 23 in parallel with the crankshaft 26.
The cam sprocket 28 mounted on the left end of the camshaft and the cam driving teeth 29 mounted on the left side of the crankshaft 26 are connected by a timing chain 30. The timing chain 30 is housed in a chain chamber 31 formed over the crankcase 17, the cylinder block 22, and the cylinder head 23.

An intake port communicating with a combustion chamber (not shown) is opened on the upper surface of the cylinder head 23, and an intake pipe 33 is connected to the intake port. An exhaust port (not shown) is opened on the lower surface of the cylinder head 23, and an exhaust pipe 34 is connected to the exhaust port. The exhaust pipe 34 extends rearward of the vehicle and is connected to a muffler 35.

The crankshaft 26 is arranged in the vehicle width direction. The generator 36 is arranged at the right end of the crankshaft 26, and the continuously variable transmission 21 is arranged at the left end thereof. I have. The continuously variable transmission 21 includes the transmission case body 1
The power transmission case 8 is housed in a belt chamber V formed by a transmission case cover 37 fixed to the outer surface of the case body 18 by bolts.

A driving pulley 40 is provided at the front of the belt chamber V.
In addition, a driven pulley 41 is disposed at a rear portion, and a V-belt 42 is wound around both pulleys 40 and 41. The drive pulley 40 is mounted on the crankshaft 26, and the inner sheave 43 of the drive pulley 40
Is moved in the axial direction by the centrifugal force acting on the shaft. The driven pulley 41 is mounted on a driven shaft 45 supported by the case body 18 and the case cover 37. A centrifugal clutch 46 is mounted on the left side of the driven shaft 45. Further, a rear wheel shaft 47 is connected to the driven shaft 45 via an intermediate shaft (not shown).

The drive pulley 4 of the transmission case cover 37
0, a kick shaft 48 for starting is supported in parallel with the crankshaft 26. The kick shaft 48 is opposed to a kick gear 49 fixed to the left end of the crankshaft 26 so as to mesh with the kick gear 49. It is connected to a gear 50.
Kick shaft 48 by stepping on kick arm 48a
The rotation of the ratchet gear 50 causes the ratchet gear 50 to move in the axial direction while rotating, meshing with the kick gear 49, and
This causes the crankshaft 26 to rotate.

In the generator 36, a magnet 52 is fixed to the inner peripheral surface of a bowl-shaped rotor 51 fixed to the right end of the crankshaft 26 by key fitting, and a generator coil 53 is arranged inside the magnet 52. The power generating coil 53 is fixed to the crankcase 17 by bolts.
56 is an oil pump drive gear, and 57 is an oil seal.

A cooling cover 54 is provided on the right outside of the crankcase 17.
Is the right side of the crankcase 17, the cylinder block 2
2 and the outer peripheral portion of the cylinder head 23 including the spark plug 58. The crankshaft 2 of the cooling cover 54
A suction port 54a is formed at a portion facing the axis line 6, and a gallery 54b is formed in the suction port 54a to prevent suction of foreign matter.

On the outer surface of the rotor 51, a cooling fan 5 is provided.
5 is bolted and fixed. The cooling fan 55 has a structure in which a large number of blades 55b are fixed to a disc-shaped base plate 55a, and the cooling fan 55 rotates with the rotation of the crankshaft 26 to draw in external air from the suction port 54a. Thus, the engine 20 is forcibly cooled.

The engine 20 is provided with a supercharging device 60. The supercharger 60 includes a supercharger 61 for compressing air, an air cleaner 62 for filtering air to the supercharger 61, and cooling and storing compressed air from the supercharger 61. And a surge tank 63 that suppresses pressure fluctuations of the fuel cell.

The surge tank 63 is arranged near the upper part of the supercharger 61, and a plurality of cooling fins 63a are formed on the outer peripheral wall of the surge tank 63. The upstream end of the intake pipe 33 is connected to the front wall of the surge tank 63. In the middle of the intake pipe 33, a carburetor 64
The carburetor 64 is provided with the supercharger 61.
And in the vicinity of the front of the surge tank 63.

The air cleaner 62 is arranged behind the surge tank 63 and above the muffler 35, and is fixedly attached to the muffler 35. The air inlet (not shown) of the air cleaner 62 is connected to the side cover 9.
e.

The supercharger 61 is disposed outside the generator 36 in the vehicle width direction and outside the cooling cover 54.
The cooling cover 54 faces the suction port 54a with a predetermined interval. The gap between the two 54, 61 is such that a part of the cooling air sucked by the cooling fan 55 flows through the outer surface of the supercharger 61, and the amount of cooling air to the engine 20 is impaired by the supercharger 61. It is set so that there is no.

The supercharger 61 is constructed by housing first and second rotor shafts 71 and 72 in a housing 70 in parallel with each other and mounting rotors 73 and 73 on the rotor shafts 71 and 72, respectively. The first rotor shaft 71 is arranged coaxially with the crankshaft 26.

In the housing 70, a rotor housing 76 having a rotor recess 76 a forming a rotor chamber is bolted and fixed to a housing body 75 having a gear chamber 96 formed therein, and a lid member 77 is attached to the rotor housing 76. Is fixed to the cover member 77 with the cover 7.
8 has a structure fixed by bolting. The housing 70 is arranged so that the gear chamber 96 is located inside the vehicle width direction and the rotor recess (rotor chamber) 76a0 is located outside. The gear chamber 96 faces the suction port 54a of the cooling cover 54. ing.

The first and second rotor shafts 71, 72
Are bearings 80, 8 on rotor housing 76 and lid member 77.
1 and each rotor shaft 71, 7
The left end of 2 protrudes into the housing body 75.

The housing body 75 is bowl-shaped with a cylindrical boss 75a projecting from the bottom wall, and the left end of the first rotor shaft 71 is located in the boss 75a. An oil seal 94 is interposed between the boss portion 75a and the first rotor shaft 71.
Oil seals 95, 95 are provided between the rotor shafts 71, 71 and the rotor housing 76, respectively. Thus, the gear chamber 96 and the rotor recess (rotor chamber) 9
The gear chamber 96 is filled with lubricating oil.

A plurality of legs 75b are formed on the outer peripheral wall of the housing body 75 so as to extend outward in the diameter direction.
7 is bolted and fixed to a boss portion 17a protruding from the right mating surface portion. As a result, the supercharger 61 is attached and fixed to the crankcase 17.

A suction port 76b communicating with the rotor recess 76a is formed on the lower surface of the rotor housing 76, and a discharge port 76c is formed on the upper surface. An intake duct 84 is connected to the intake port 76b. The intake duct 84 extends obliquely upward and rearward and is connected to the front bottom of the air cleaner 62. A pressure duct 83 is connected to the discharge port 76c. The pressure duct 83 extends vertically upward and is connected to the bottom of the surge tank 63.

Each of the rotors 73 is made of an aluminum alloy formed by extrusion and has a cocoon shape having a long diameter portion 73b having a large diameter in one direction and a short diameter portion 73c having a small diameter in a direction perpendicular thereto. An insertion hole 73a is formed in the center of the rotor 73 so that the rotor shafts 71 and 72 are lightly press-fitted. In addition, a rectangular dowel hole 73d extending in a direction perpendicular to the axis is formed through the long diameter portion 73b of each rotor 73.

Each of the rotors 73 is made of an iron ring member 8.
Each ring member 87 is fixed to each of the rotor shafts 71 and 72 via a corresponding one of the rotor shafts 7 and 87.
1, 72 are fixed by plastic flow coupling.

The plastic flow coupling will be described. A pressing step 88 and a connecting groove 89 following the pressing step 88 are previously formed in the outer periphery of each of the rotor shafts 71 and 72 in an annular shape, and a connecting hole 87 a is formed in the center of the ring member 87. Keep it.

The step 8 of the rotor shafts 71, 72
At 8, the plastically deformed portion 87a 'formed by pressurizing and deforming the periphery of the coupling hole 87a of the ring member 87 flows into the concave groove 89 and fits. That is, the peripheral portion of the coupling hole 87a of the ring member 87 is pressed by the step 88 of the rotor shafts 71 and 72 by a pressing jig (not shown) (FIG. 6).
(See (a) and (b)). Then, the peripheral portion of the coupling hole 87a is pressurized by the step portion 88 and is plastically deformed.
7a 'is fitted into the concave groove 89, whereby the ring member 87 is connected to the rotor shafts 71 and 72 (see FIGS. 6C and 6D). The plastic flow coupling is thin width
(Axial dimension) enables firm coupling in both the rotation direction and the axial direction, so that an increase in the dimension in the vehicle width direction can be suppressed.

Further, at both outer edges in the diameter direction of the ring member 87, a prismatic dowel 87b is formed so as to protrude, and the dowel 87b is engaged with the dowel hole 73d. Thus, the rotation of each of the rotor shafts 71 and 72 is transmitted to the rotor 73 via the ring member 87, and thermal expansion due to a difference in material between the rotor 73 made of aluminum alloy and the ring member 87 made of iron. It is designed to absorb the difference. Further, a groove 87e into which grease (not shown) is injected is formed in an outer peripheral portion of the ring member 87, and rust of the ring member 87 and fixation by the rust are prevented, so that the ring member 87 can be used for a long time.

Gears 91 and 92 are provided at inner ends of the first and second rotor shafts 71 and 72 in the gear chamber 96, respectively.
Are connected by key fitting. These gears 91, 92
The teeth are meshed with the same number of teeth, so that the rotors 73 rotate while maintaining a constant phase angle.

The first rotor shaft 71 and the crankshaft 26 are directly connected via a joint 100. The joint 100 is formed by integrally connecting and forming a rod-shaped shaft portion 100b mounted on the supercharger 61 side to a bowl-shaped cylindrical portion 100a mounted on the crankshaft 26 side. The peripheral surface is the right end 2 of the crankshaft 26.
6 is supported by a bearing 101 disposed between the first and second bearings 6.

A plurality of connecting teeth 100c are formed on the opening edge of the cylindrical portion 100a in the circumferential direction, and each connecting tooth 100c is connected to a connecting tooth 55c formed at the base of the rotor 51.
Is engaged. As a result, the joint 100 rotates together with the cooling fan 55 by the rotation of the crankshaft 26.

The shaft portion 100b projects from the cooling cover 54 and is inserted into the boss portion 75a of the housing body 75, and is supported by a bearing 102 mounted in the boss portion 75a. At the outer end of the shaft portion 100b, a protrusion 100d is formed by cutting out.
"d" is engaged with a recess 71a formed by cutting out the inner end of the first rotor shaft 71 to form a joint. The shaft portion 100b is provided with a stopper portion 100e which comes into contact with the bearing 102 and functions as an outward stopper.

Next, the operation and effect of this embodiment will be described.

In the supercharger 60 of this embodiment, the air filtered by the air cleaner 62 is supplied to the rotor 73 of the supercharger 61,
The compressed air is sucked and compressed by the rotation of 73, and the compressed air is pumped to the surge tank 63, cooled and stored in the surge tank 63. Then, the compressed air stored in the surge tank 63 is supplied to the carburetor 64, where it becomes an air-fuel mixture and is supplied from the intake pipe 33 to the combustion chamber.

According to this embodiment, the supercharger 61 is connected to the generator 36 disposed on the opposite side of the V-belt type continuously variable transmission 21.
, It is possible to effectively use the space on the side of the engine without sacrificing the capacity of the storage box 10 for storing the helmet and the fuel tank 12, and to allow the occupant to get on and off when driving. Can be prevented from interfering with each other. Further, since the supercharger 61 is externally provided outside the generator 36, the supercharger 61 itself can be cooled by the traveling wind, and the cooling performance can be improved.

In the present embodiment, the first rotor shaft 71 of the supercharger 61 is arranged so as to be coaxial with the crankshaft 26 and is directly connected via the joint 100. The supercharger 61 can be disposed without providing a new driving system, which can simplify the structure for driving the crankshaft and suppress the increase in cost.

In the scooter type motorcycle 1 having a small displacement, which is the target of the present embodiment, the vehicle is often driven with the throttle relatively opened, and if the performance can be improved by supercharging, the driving becomes easier. In this embodiment,
Since the supercharger 61 is always driven with the rotation of the engine, even when the throttle is opened from low rotation, the air amount does not delay, the throttle response is high, and the driving performance can be improved.

According to the present embodiment, the supercharger 61 is mounted and fixed to the crankcase 17 and the supercharger 61
The surge tank 63 and the carburetor 64 are attached and fixed to the intake pipe 33 above the air conditioner, and the air cleaner 62 is attached and fixed to the muffler 35. Therefore, the supercharging device 60 including the supercharger 61, the surge tank 63, the carburetor 64, and the encleaner 62 Can be assembled integrally to the power unit 15 and can be assembled together on the assembly line of the power unit 15. When the turbocharger is externally mounted, the assembling process is changed, or there is a supercharger. By eliminating the need, it is not necessary to change the assembly process.

Since the components of the supercharger 60 are attached to the power unit 15, the components can be concentrated around the engine, and the intake path from the supercharger 61 to the combustion chamber of the engine 20 can be shortened. Therefore, the response to the throttle operation can be improved by that much, and the reliability against air leakage and the like can be ensured. Power unit 1
Since the supercharging device 60 is attached to 5, the supercharging device 60 also swings simultaneously with the vertical swinging of the power unit 15, and there is no relative movement between the two, and the structure is simplified from this point. it can.

In the present embodiment, the supercharger 61 is arranged outside the suction port 54a of the cooling cover 54 with a predetermined gap, so that the cooling fan 55 operates over the entire operation range from idling to running. The supercharger 61 can be constantly cooled, and problems such as unstable operation due to temperature rise can be avoided. Further, since the gear chamber 96 is arranged so as to face the suction port 54a, the lubricating oil in the gear chamber 96 can be cooled by the cooling fan 55, deterioration due to the temperature of the lubricating oil can be suppressed, and the lubricating oil can be replaced. The cycle can be lengthened.

In this embodiment, the rotor shafts 71, 7
Since the ring member 87 is fixedly mounted on the rotor 2 and the rotor 73 is driven to rotate via the ring member 87,
3 and the shafts 71 and 72 can be lightly press-fitted or fitted with a gap to reduce the coupling force.
The deformation of 3c can be prevented, the required torque can be secured, and the reduction of the transmission torque due to the relaxation of the coupling force can be avoided. This makes it possible to configure a small turbocharger corresponding to a small engine, and to adopt it to a scooter-type motorcycle equipped with a single-cylinder engine having a large rotation fluctuation.

The dowel 87 of the ring member 87 is
3 is engaged with the dowel hole 73d of the rotor shaft 71, 7
2 is transmitted, so that the rotor shaft 7
The rotation of 1, 72 can be accurately transmitted to the rotor 73. Here, in order to accurately transmit the rotation to the rotor 73, it is necessary to make the gap between the dowel 87b and the dowel hole 73d minute. In the present embodiment, since the dowel 87b is formed in the shape of a prism having a parallel surface, the rotor 73 is not deformed and no backlash occurs, and the influence of a difference in thermal expansion due to a difference in material can be eliminated. This makes it possible to employ an aluminum light alloy for the rotor 73 and an iron material for the ring member 87, and to extrude the rotor 73.

Since the ring member 87 is connected to the rotor shafts 71 and 72 by a plastic flow method, the ring member 87 having a small thickness can be firmly fixed, and the ring member 8 can be fixed.
7 can be reduced from the outer peripheral gap, and the ring member 87
Can be prevented from decreasing due to an increase in leakage due to the addition of the gas.

Incidentally, a structure in which the rotor and the shaft are connected by a pin inserted in the diameter direction of the shaft (see Japanese Utility Model Application Laid-Open No. 59-165987), or a structure in which the rotor is spline-connected to the shaft (Japanese Patent Publication No. 6-50)
In the case of adopting JP-A No. 115, the thickness between the short diameter portion of the rotor and the shaft is reduced, so that the rotor is deformed or the torque is secured especially when the rotor is downsized. There was a problem that it became difficult.

[Brief description of the drawings]

FIG. 1 is a side view of a scooter type motorcycle provided with a supercharger according to an embodiment of the present invention.

FIG. 2 is a plan view of a power unit mounted on the motorcycle.

FIG. 3 is a sectional plan view of a mounting portion of a supercharger of the power unit.

FIG. 4 is a side view of a rotor of the supercharger.

FIG. 5 is an exploded perspective view of the rotor in an assembled state.

FIG. 6 is a view showing an assembly process of the rotor by a plastic flow method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle 20 Engine 21 V-belt type continuously variable transmission 26 Crankshaft 33 Intake pipe 36 Generator 54 Cooling cover 54a Suction port 61 Supercharger 63 Surge tank 64 Carburetor 70 Housing 73 Rotor 76a Rotor recess (rotor chamber) 76b Suction Port 76c Discharge port 91, 92 Gear 96 Gear chamber 100 Joint

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02B 39/04 F02B 39/04 61/02 61/02 C 67/00 67/00 K J F02M 35/10 F04C 18/18 A F04C 18/18 F02M 35/10 301P

Claims (5)

[Claims] A motorcycle provided with a generator at an end of a crankshaft arranged in a vehicle width direction and having a supercharger rotationally driven by the crankshaft.
While disposing the supercharger outside the generator,
A motorcycle comprising a supercharger, wherein the motorcycle is connected to the crankshaft via a joint. 2. A motorcycle equipped with a supercharger having a V-belt type continuously variable transmission disposed at one end of a crankshaft disposed in a vehicle width direction and being rotationally driven by the crankshaft. A motorcycle equipped with a supercharger, wherein the supercharger is disposed on the opposite side of the V-belt type continuously variable transmission, and is connected to the crankshaft via a joint. 3. The supercharger according to claim 1, wherein the supercharger is mounted and fixed to an engine, and a suction port is formed below the supercharger and a discharge port is formed above the supercharger. A motorcycle equipped with a supercharger, wherein a surge tank and a carburetor are arranged in an intake path connected to and located above the supercharger. 4. The motorcycle according to claim 1, wherein the supercharger is disposed outside a suction port of a cooling cover for an engine cooling fan. 5. The turbocharger according to claim 4, wherein the interior of the housing of the supercharger is divided into a rotor chamber in which a rotor is housed and a gear chamber in which gears for driving the rotor are housed. A motorcycle provided with a supercharger, which is located inside the vehicle width direction and near the suction port of the cooling cover.