JP5381122B2 - Saddle-type vehicle cooling system - Google Patents

Description

  The present invention relates to a straddle-type vehicle such as a motorcycle, and more particularly to a cooling device thereof.

  Conventionally, water-cooled motorcycles equipped with radiators as saddle-riding vehicles, especially non-cowl type models called naked, are limited in terms of the location of reservoir tanks that store cooling water. There are many things that are made invisible mainly by being housed in the seat cowl.

  On the other hand, in recent years when a stylish and nimble design is required, a thin and nimble shaping is also demanded for the seat cowl, and it is becoming difficult to fit a reservoir tank having a required capacity in the seat cowl.

  Therefore, the reservoir tank is installed outside the seat cowl, which is disposed below the swing arm (see, for example, Patent Document 1), and disposed on the left side of the vehicle body between the engine and the cross member (for example, Patent Document). 2), those arranged between the radiator and the engine (see, for example, Patent Document 3), and those arranged at the top and rear of the engine (see, for example, Patent Document 4). ing.

Japanese Patent Laid-Open No. 05-213252 Japanese Utility Model Publication No. 56-045822 Japanese Patent No. 3506886 Japanese Patent No. 3844980

  However, in the cooling device for a saddle-ride type vehicle configured as described above, for example, in a device disposed below the swing arm, a reservoir is used to avoid interference when the swing arm swings. The tank must be placed in the lower position of the vehicle body, and the possibility of damage due to flying stones is increased, and the piping structure for supplying cooling water to the radiator is complicated and lengthened, which affects the effects of vehicle body vibration. There was a problem that it was greatly received and caused damage to the piping.

  In addition, in the case of the one arranged on the left side of the vehicle body between the engine and the cross member, it is not only difficult to form as a product because it is exposed to the outside, but generally the left side of the vehicle body where the side stand is installed However, there has been a problem that cooling water replenishment workability (water supply) is lowered when the vehicle body is tilted during parking.

  Furthermore, in the case of the one arranged between the radiator and the engine, not only there is a risk of obstructing the flow of the exhaust air from the radiator, but also a protrusion left on the curb or the roadway when the vehicle is rolled, etc. There has been a problem in that it interferes with the reservoir tank and causes damage.

  Moreover, in the case where the engine is arranged at the upper part or rear part of the engine, not only the heat dissipation of the engine is disturbed, but also the cooling water temperature rises due to the heat dissipation of the engine and the cooling effect is lowered. Has occurred.

  Therefore, in consideration of the above circumstances, the present invention not only can reduce the exposure to improve the design and prevent damage to the tank components, but also avoids adverse effects on radiator exhaust and engine heat dissipation. In addition, an object of the present invention is to provide a cooling device for a saddle type vehicle that can easily ensure water supply and maintainability.

  A straddle-type vehicle cooling device according to the present invention includes a swing arm that supports a rear wheel on one end side, a pair of left and right body brackets that support the other end of the swing arm so as to be swingable about a pivot shaft, A straddle-type vehicle including a cross member constructed between the pair of left and right body brackets, wherein a reservoir tank is disposed at a position overlapping the pair of left and right body brackets in a side view of the vehicle body And

  According to the cooling device for a saddle-ride type vehicle of the present invention, the outer side of the reservoir tank can be covered with the body bracket, the external exposure of the reservoir tank is reduced, the design is improved, and damage to the tank components is suppressed. can do. Further, when the reservoir tank is disposed, it is possible to dispose the reservoir tank at a position that avoids adverse effects on the exhaust air from the radiator and the heat radiation from the engine, and it is possible to easily ensure water supply and maintainability. Furthermore, since the outer side of the reservoir tank is covered with the body bracket, it can be applied to a non-cowl type model such as naked.

  In the cooling device for a saddle-ride type vehicle according to claim 2, the reservoir tank is disposed above the pivot shaft and below the cross member.

  According to the cooling system for a saddle-ride type vehicle according to claim 2, by arranging the reservoir tank in the space surrounded by the pivot shaft and the cross member that are set to be relatively high in strength, It is possible to improve the effect of suppressing the damage of the tank components against the external force.

  According to a third aspect of the present invention, there is provided a cooling device for a saddle-ride type vehicle, wherein the reservoir tank has a rear cushion unit in which an upper portion is supported substantially in the vicinity of the center of the cross member in the vehicle width direction and either the left or right of the body bracket. It is arrange | positioned between.

  According to the cooling device for a saddle riding type vehicle according to the third aspect, the dead space formed on the side of the rear cushion unit can be effectively used.

  According to a fourth aspect of the present invention, there is provided the cooling device for the saddle riding type vehicle, wherein the reservoir tank is arranged to be deviated to one side with respect to a vehicle body center line extending in the vehicle longitudinal direction and transmits power to the rear wheel. The drive chain and the vehicle body center line are arranged so as to be biased on the opposite side.

  According to the cooling device for a saddle-ride type vehicle according to claim 4, not only can the interference with the drive chain having a large influence of the swing width when the swing arm swings up and down be easily avoided, but also the interference can be reduced. Since it is not necessary to dispose the reservoir tank at a high position in order to avoid it, the reservoir tank can be disposed at a low position in the vehicle body, which contributes to lowering the center of gravity of the vehicle body and securing the tank capacity.

  According to a fifth aspect of the present invention, there is provided a cooling device for a saddle-ride type vehicle, wherein the reservoir tank is extended at an upper rear portion of the reservoir tank toward an obliquely rear upper portion of the vehicle body and an injection opening is positioned rearward of the body bracket. An injection part is provided.

  According to the cooling device for a saddle riding type vehicle according to the fifth aspect, the water injection operation can be easily performed at a position away from the body bracket.

  Furthermore, in the cooling device for a saddle-ride type vehicle according to claim 6, the injection opening opens toward a side opposite to a side stand installed on one side of the left and right sides of the vehicle body frame with respect to the vehicle body center line. It is characterized by.

  According to the cooling device for a saddle-ride type vehicle according to claim 6, the water injection workability can be further improved by using the side stand so that the injection portion can be disposed so as to face upward when the vehicle body is tilted. can do.

  The cooling device for a saddle-ride type vehicle according to claim 7 is connected to the reservoir tank and discharges an excess amount of cooling water to the outside, and is connected to the fuel supply portion of the fuel tank. A fuel tank drain hose for discharging the water accumulated in the tank to the outside, and the overflow hose and the fuel tank drain hose are connected to each other and drained on the side stand side with respect to the vehicle body center line and below the drive chain. And an aggregation hose having an opening.

  According to the cooling device for a saddle-ride type vehicle according to claim 7, not only can the piping be reduced by the aggregation hose, the wiring workability can be improved and the space for the wiring can be easily secured. Can be prevented from adhering to the vehicle body parts, and even when the vehicle body is tilted using the side stand, the drive chain is not drained because it opens to the lower side of the vehicle body.

  The cooling device for a saddle-ride type vehicle according to the present invention not only can reduce exposure to improve design and suppress damage to tank components, but also avoids adverse effects on radiator exhaust and engine heat dissipation. Moreover, water supply and maintainability can be easily ensured.

1 is a side view of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention. 1 is a perspective view of a main part of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention. 1 is a side view of a main part of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention. 1 is a plan view of a main part of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention.

  Next, an embodiment according to the cooling device for a saddle riding type vehicle of the present invention will be described with reference to the drawings. The following embodiments are preferred specific examples of the cooling device for a saddle type vehicle according to the present invention, and may have various technically preferable limitations. However, the technical scope of the present invention is as follows. Unless specifically described to limit the present invention, it is not limited to these embodiments.

  In the following description, the vehicle body front-rear and left-right directions are defined based on the vehicle body forward travel direction. Further, in the following description, (R, L) is appended to the pair of left and right vehicle body components, followed by the symbols (R, L) following the names of the respective components, and in particular, the components are limited to those arranged on the right side of the vehicle body. In the case where (R) is limited to the code following the name of the part, and (L) is added to the code following the name of each component, the description will be made with reference to the name placed on the left side of the vehicle body.

  FIG. 1 is a side view of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention, and FIG. 2 is a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention. FIG. 3 is a side view of an essential part of a motorcycle as a saddle riding type vehicle showing a cooling device for a saddle riding type vehicle according to the present invention, and FIG. 4 is a cooling device for a saddle riding type vehicle according to the present invention. 1 is a plan view of a main part of a motorcycle as a saddle riding type vehicle.

  As shown in FIG. 1, a straddle-type vehicle 10 according to an embodiment of the present invention includes a front wheel 12 rotatably supported by a front fork 11 and a rear wheel rotatably supported by one end of a swing arm 13. 14, a handle 15 for operating the front wheel 12, a fuel tank 16 for storing fuel (gasoline or the like), a driving seat 17 disposed adjacent to the rear of the vehicle body of the fuel tank 16, and a driving seat 17 disposed adjacent to the rear of the vehicle body. The tandem seat 18, the seat cowl 19 disposed below the operation seat 17 and the tandem seat 18, the water-cooled engine 20 disposed below the fuel tank 16, and the vehicle body front of the engine 20. An adjacent radiator 21, a drive chain 22 that transmits the power of the engine 20 to the rear wheel 14, and a side that is disposed on the lower left side near the center of the vehicle body From the stand 23, the main stand 24 disposed on the rear side of the side stand 23, a plurality of exhaust pipes 25 extending from the exhaust ports (not shown) of the engine 20 to the rear side of the vehicle body, and the rear part of the exhaust pipe 25 And an exhaust muffler 26 obliquely upward toward the rear of the vehicle body and extending toward the rear right side of the vehicle body.

  In addition, as shown in FIG. 2, the saddle riding type vehicle 10 includes a vehicle body frame 27 for supporting these various components.

  The vehicle body frame 27 is basically composed of a structure such as a highly rigid metal pipe or frame, and extends to the top and bottom of the vehicle body and has a pair of left and right vehicle body functions as a wide main frame. A body bracket 28 (R, L), a pair of left and right down tubes 29 (R, L) fixed to the lower ends of the body bracket 28 (R, L), and a body bracket 28 (R, L) ) Between the lower end of the body bracket 28 (R, L), the pivot shaft 31 between the body bracket 28 (R, L) and the upper part of the body bracket 28 (R, L). A pair of left and right vehicle body seat rails with one end supported between the cross member 32 and each upper portion of the body bracket 28 (R, L) and the other end extending obliquely rearward and upward. 33 (R, L), a pair of left and right tank rails 34 (R, L) each having one end supported at a middle portion of the seat rail lower 33 (R, L) and extending forward of the vehicle body, and the tank rail 34 ( (R, L) between the rear end of the vehicle body, the bridge pipe upper 35, the other end (upper end) of the seat rail lower 33 (R, L), and the middle part of the tank rail 34 (R, L) Seat rail upper 36 (R, L) installed on the vehicle body obliquely rearward and upward, and as shown in FIG. 3, the front end of each vehicle body of the down tube 29 (R, L) and the tank rail 34 (R, L). And a head pipe 37 connected to the section. In addition to the pipe frame structures described above, the vehicle body frame 27 includes, for example, a center reinforcing rail 38 (R, L) straddling the upper end of the body bracket 28 (R, L) and the tank rail 34 (R, L). ), Between the front reinforcing rail 39 and the middle part of the seat rail upper 36 (R, L) installed between the down tube 29 (R, L) and the tank rail 34 (R, L) in the vicinity of the head pipe 37 As the seat rail upper reinforcing rail 40 is installed on the rail, a reinforcing structure as required is adopted.

  The down tube 29 (R, L) is bent and extended from the lower part of the front and rear center of the vehicle body where the body bracket 28 (R, L) is disposed to the vicinity of the upper part of the front of the vehicle body (only a part is shown in FIG. 2). ing. A radiator upper end support bracket 41 that supports the upper end of the radiator 21 is provided in the vicinity of the front of the vehicle body of the down tube 29 (R, L). Further, a stand support shaft 42 that rotatably supports the side stand 23 is provided in the vicinity of the base portion adjacent to the body bracket 28 (L) of the down tube 29 (L) disposed on the left side of the vehicle body. The main stand 24 is rotatably supported by the bridge pipe lower 30 via a stand mounting bracket (not shown).

  A pair of left and right engine suspension bracket lowers 43 (R, L) for supporting the lower side of the engine 20 are fixed to the bridge pipe lower 30 in the vicinity of both ends on the front side of the vehicle body. Further, the bridge pipe lower 30 is provided with a rear cushion unit support bracket 45 that supports the lower side of the rear cushion unit 44 in the vicinity of the center on the rear side of the vehicle body. Further, a hose support bracket 46 is provided in the lower part of the bridge pipe lower 30 near the center of the vehicle body.

  The other end of the swing arm 13 is supported on the pivot shaft 31 so as to avoid the coil spring 47 of the rear cushion unit 44 located at the center in the left-right direction of the vehicle body. Note that the drive chain 22 is rotatably disposed between the coil spring 47 of the rear cushion unit 44 and the vehicle body left side arm portion 48 of the swing arm 13.

  A pair of left and right engine suspension bracket uppers 49 (R, L) for supporting the upper side of the engine 20 is fixed to the cross member 32 in the vicinity of both ends on the front side of the vehicle body. The cross member 32 is provided with a tank mounting bracket 51 that supports the upper side of the rear cushion unit 44 and the upper side of the reservoir tank 50 at the rear side of the vehicle body that is biased to the right side of the vehicle body from the center in the left-right direction of the vehicle body. The lower side of the reservoir tank 50 is supported by a tank stay 52 fixed to the back surface of the body bracket 28 (R). Further, an impact absorbing member 53 such as a cushion rubber fixed to the surface of the reservoir tank 50 is disposed between the right side surface of the vehicle body of the reservoir tank 50 and the body bracket 28 (R). The impact caused by friction between the bracket 28 (R) and the inside is reduced.

  As shown in FIG. 4, an ABS that supports the rear cushion unit 44 and the ABS unit 54 disposed adjacent to the rear side of the vehicle body is provided between the seat rail lower 33 (R, L) in the vicinity of the vehicle front side end portion. A unit support bracket 55 is provided. Further, a grab bar mounting bracket 57 (R, L) for mounting a grab bar 56 straddling the left and right of the vehicle body is provided between the vicinity of the rear end of the vehicle body of the seat rail lower 33 (R, L). The grab bar mounting bracket 57 (R, L) is covered with the seat cowl 19.

  The tank rails 34 (R, L) extend from the upper part of the front and rear center of the vehicle body where the body brackets 28 (R, L) are disposed to the vicinity of the front of the vehicle body with an upward inclination toward the front of the vehicle body. An operation seat support bracket 59 for supporting the operation seat 17 is provided between the vicinity of the connecting portion between the tank rail 34 (R, L) and the seat rail upper 36 (R, L).

  The bridge pipe upper 35 is provided with air cleaner support brackets 60 (R, L) for supporting an air cleaner 68 (described later) near the left and right ends of the vehicle body.

  A tandem seat support bracket 61 for supporting the tandem seat 18 is provided between the vicinity of the rear end of the seat rail upper 36 (R, L). A positioning frame 62 (R, L) for positioning the boundary portion between the operation seat 17 and the tandem seat 18 is provided near the center of the seat rail upper 36 (R, L). Further, a seat cowl support bracket 63 (R, L) for fixing the seat cowl 19 is provided outside the vicinity of the center of the seat rail upper 36 (R, L).

  The head pipe 37 is provided with a steering shaft (not shown) for connecting the handle 15 and the front fork 11 so as to rotate integrally with the head pipe 37.

  By the way, the body bracket 28 (R), the seat rail lower 33 (R), the tank rail 34 (R), and the center reinforcing rail 38 (R) form a substantially triangular area, and the outside of the substantially triangular area is outside. The injection part 74 of the reservoir tank 50 is provided in the direction. In addition, the injection | pouring part 74 is always covered with the cover (not shown) which covers a substantially triangular area | region, and the external appearance is ensured. The reservoir tank 50 is located at a position biased to the right side of the vehicle body relative to the coil spring 47 disposed at the center of the vehicle body, and between the pivot shaft 31 and the cross member 32 that are spaced apart from the vehicle body. In order to ensure strength, it is covered with a body bracket 28 (R) which is a forged product wide in the longitudinal direction of the vehicle body.

  On the other hand, the engine 20 is equipped with various auxiliary machines, a radiator cap 65, a thermo stud valve 66, etc. are arranged above the cylinder head 64 in the vehicle body, and the radiator 21 is arranged in front of the cylinder head 64 in the vehicle body. An air cleaner 68 is disposed above the vehicle body 67, and a reservoir tank 50 is disposed behind the crankcase 67 and slightly above the vehicle body.

  The lower end of the radiator 21 is supported by a radiator support pipe 71 installed between the down tubes 29 (R, L) via a radiator lower end support bracket 70. Further, a radiator inlet hose 72 is connected to the rear surface of the radiator 21 closer to the upper portion of the vehicle body (upper side of the vehicle body), and a radiator outlet hose 73 is connected to the rear surface of the radiator 21 closer to the lower portion of the vehicle body (lower portion of the rear side of the vehicle body).

  A water pump (not shown) is installed near the left side of the crankcase 67 of the engine 20. A cylinder inlet hose 69IN is connected to the front surface of the cylinder of the engine 20, and a cylinder outlet hose 69OUT is provided on the rear surface of the cylinder head 64. The cylinder inlet hose 69IN serves as an inlet for cooling water to a water jacket (not shown) inside the cylinder and the cylinder head 64, and the cylinder outlet hose 69OUT serves as an outlet for cooling water from the water jacket (not shown). . The water jacket (not shown) of the cylinder and the water jacket (not shown) of the cylinder head 64 are in communication with each other.

  The cylinder inlet hose 69IN is connected to a discharge side of a water pump (not shown), and the cylinder outlet hose 69OUT is connected to a radiator inlet hose 72 connected to the upper rear surface of the vehicle body of the radiator 21, and a water pump (not shown). The suction port is connected to a radiator outlet hose 73 connected to the lower back of the vehicle body of the radiator 21.

  A reservoir inlet hose 75 extending from the reservoir tank 50 is routed above the air cleaner 68 from the lower portion of the reservoir tank 50 and connected to the radiator cap 65, and an overflow hose 76 extending from the upper portion of the reservoir tank 50 is connected to the reservoir tank 50. It curves backward and extends below the reservoir tank 50.

  In the above configuration, when the engine 20 is operated, a water pump (not shown) is driven, and the cooling water is supplied from the radiator 21 → the radiator outlet hose 73 → the water pump (not shown) → the cylinder inlet hose 69IN → the water jacket (see FIG. (Not shown) → Cylinder outlet hose 69OUT → Radiator inlet hose 72 → Radiator 21 is circulated in this order, and the engine 20 is cooled by the cooling water heat-exchanged by the radiator 21.

  On the other hand, the overflow hose 76 is joined and connected to a fuel tank drain hose 78 connected to the fuel tank 16 via a three-way joint 77, and is aggregated by one aggregate hose 79 connected to the three-way joint 77. The

  Further, a fuel tank breather hose 80 for ventilation is connected to the fuel tank 16, and this fuel tank breather hose 80 is routed along the collecting hose 79. In the present embodiment, the collecting hose 79 and the fuel tank breather hose 80 are bundled by the hose support bracket 46 and routed so that the discharge port opens on the left side of the vehicle body and below the drive chain 22. Has been.

  As described above, according to the cooling device for the saddle riding type vehicle 10 according to the present invention, the reservoir tank 50 is arranged from the side of the vehicle body by overlapping the body bracket 28 (R) that is generally wide. Visibility can be reduced.

  Further, by disposing the reservoir tank 50 above the pivot shaft 31 and below the cross member 32, the reservoir tank 50 is disposed in a relatively high region of the vehicle body synthesis, and the reservoir tank 50 is removed from the external force acting on the vehicle body. Can be protected.

  At this time, the reservoir tank 50 is attached to the cross member 32 via the tank attachment bracket 51. Since the cross member 32 also serves as a reinforcing member that supports the upper end of the rear cushion unit 44, its rigidity is generally very high. Therefore, in the motorcycle as the saddle-ride type vehicle 10, since the bank is greatly banked to the left and right of the vehicle body during traveling, the inertia weight due to the movement of the vehicle body to the left and right in conjunction with the banking of the cooling water in the reservoir tank 50 is reduced. Even if it increases, the attachment strength can be ensured without providing reinforcing ribs or the like in the reservoir tank 50 or the tank stay 52.

  Further, the reservoir tank 50 can be protected by the reservoir tank 50 by disposing the reservoir tank 50 on the vehicle body right side of the rear cushion unit 44 and inside the vehicle body of the body bracket 28 (R) disposed on the vehicle body right side. .

  Specifically, it is possible to suppress gravel or the like from being caught between the coil springs 47 and the like of the rear cushion unit 44. Particularly, since the drive chain 22 is disposed on the left side of the vehicle body of the rear cushion unit 44, if the reservoir tank 50 is disposed on the left side of the vehicle body, the swing width is further increased when the swing arm 13 is swung. Since it is necessary to avoid interference with the drive chain 22, it becomes difficult (sacrificed) to secure the capacity of the reservoir tank 50. However, as in the present invention, the right side of the vehicle body opposite to the drive chain 22 is difficult. If the reservoir tank 50 is disposed in the tank, it is possible to eliminate such restrictions on the arrangement height and the capacity limitation.

  Furthermore, the overflow hose 76 connected to the upper part of the reservoir tank 50 is connected in communication with a fuel tank drain hose 78 that discharges water accumulated in the filler cap part (water injection part: not shown) of the fuel tank 16. Since it functions as one aggregate hose 79 after the connecting portion, a small piping structure can be adopted. The collecting hose 79 may be used as the collecting hose 79 by either the overflow hose 76 or the fuel tank drain hose 78.

  At this time, the aggregation hose 79 is routed rearward of the engine 20 and from the right side of the vehicle body toward the center in the vehicle width direction (in this embodiment, as the left side of the vehicle body, on the side where the side stand 23 is installed with respect to the vehicle center line) ), The water is drained at a position close to the road surface by extending downward.

  Therefore, since the reservoir tank 50 is disposed on the right side of the vehicle body, the length of the fuel tank drain hose 78 can be shortened by routing the fuel tank drain hose 78 to the right side of the vehicle body. It is possible to suppress the fuel tank drain hose 78 from being lost due to interference with other vehicle body components.

  In addition, since the collecting hose 79 is opened on the left side of the vehicle body, it is possible to prevent moisture discharged during parking when the side stand 23 of the saddle riding type vehicle 10 is used from being applied to other vehicle body components. .

  In particular, since the collecting hose 79 is opened below the drive chain 22, it is possible to prevent water after draining from being directly applied to the drive chain 22 disposed on the left side of the vehicle body as the collecting hose 79. The occurrence of rust in the drive chain 22 can be reduced and the life can be extended.

DESCRIPTION OF SYMBOLS 10 ... Saddle type vehicle 13 ... Swing arm 14 ... Rear wheel 20 ... Engine 21 ... Radiator 22 ... Drive chain 23 ... Side stand 28 (R) ... Body bracket 28 (L) ... Body bracket 29 (R) ... Down tube 29 ( L) ... Down tube 31 ... Pivot shaft 32 ... Cross member 44 ... Rear cushion unit 47 ... Coil spring 48 ... Vehicle left arm 50 ... Reservoir tank 51 ... Tank mounting bracket 52 ... Tank stay 53 ... Shock absorbing member 54 ... ABS unit 64 ... Cylinder head 65 ... Radiator cap 66 ... Thermostud valve 69IN ... Cylinder inlet hose 69OUT ... Cylinder outlet hose 72 ... Radiator inlet hose 73 ... Radiator outlet hose 74 ... Injection part 75 ... Rezer Inlet hoses 76 ... overflow hose 77 ... three-way joint 78 ... Fuel tank drain hose 79 ... intensive hoses 80 ... Fuel tank breather hose

Claims (3)

A swing arm that supports the rear wheel at one end, a pair of left and right body brackets that swingably supports the other end of the swing arm about a pivot axis, and a pair of left and right body brackets. A straddle-type vehicle including a cross member,
A reservoir tank that is connected to a radiator cap and stores cooling water is disposed at a position overlapping the pair of left and right body brackets in a side view of the vehicle body , and the reservoir tank is located above the pivot shaft and below the cross member. A vehicle body centerline that is disposed between the rear cushion unit, the upper portion of which is supported near the center of the cross member in the vehicle width direction and the left or right of the body bracket, and extends in the longitudinal direction of the vehicle body. The drive chain for power transmission to the rear wheel and the vehicle body center line are arranged to be biased on the opposite side.
A cooling device for a saddle-ride type vehicle, characterized in that the rear upper part of the reservoir tank is provided with an injection part that extends toward the rear upper part of the vehicle body and has an injection opening located behind the body bracket. . The straddle-type vehicle according to claim 1, wherein the injection opening opens toward a side opposite to a side stand installed on one side of a vehicle body frame with respect to the vehicle body center line. Cooling system. An overflow hose connected to the reservoir tank for discharging an excess amount of cooling water to the outside; a fuel tank drain hose connected to a fuel supply portion of the fuel tank for discharging water accumulated in the fuel supply portion; and the overflow The hose and the fuel tank drain hose are connected in communication with each other, and the hose and the fuel tank drain hose are provided with an aggregation hose that opens a drain outlet on the side stand side and below the drive chain with respect to the vehicle body center line. The cooling device for a saddle riding type vehicle according to claim 2.

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