JP5983079B2 - Motorcycle canister arrangement structure - Google Patents

Description

  The present invention relates to a canister arrangement structure in a motorcycle equipped with a gasoline engine, particularly in a motorcycle equipped with an evaporation system.

  In recent years, with increasing environmental problems, laws and regulations that prevent harmful substances in gasoline from being released into the atmosphere are becoming stricter. There is an evaporation system as a means of clearing such restrictions. In this evaporation system, in order to prevent evaporative gas fuel (evaporation gas) generated in the fuel tank of a gasoline engine from being released into the atmosphere, the evaporation gas is temporarily adsorbed to the adsorbent of the canister, and depending on the operating condition of the engine The adsorbed evaporative gas is purged into the intake pipe of the engine and burned together with the fresh air sucked from the air hole of the canister.

  The evaporation system includes a canister as its central part, and the arrangement configuration of the canister as the central part is extremely important. In particular, in a vehicle having a so-called underbone type body frame provided with a utility box under a seating seat, the following canister arrangement methods are conventionally known.

For example, the utility box is arranged so as to greatly reduce the capacity, or is arranged outside the utility frame outside the utility box. In this case, it is inside the outfitting.
In addition, a canister is disposed horizontally below the utility box, or is disposed outside the vehicle body so that the canister is exposed.

  In addition, there exist some which are disclosed by patent documents 1-3 etc. as this kind of canister arrangement | positioning structure or arrangement | positioning format.

JP 2011-213227 A Japanese Patent No. 2891802 JP 2010-52655 A

  However, in the above canister arrangement method, first, if the capacity of the utility box is greatly reduced, there is a problem that the merchantability is remarkably reduced, and if it is outside the utility box and inside the outfit, the utility box Although the capacity of the car can be secured, the shape of the outfitting must be inflated, which has a great impact on the appearance of the car body.

  In the case where the canister is horizontally arranged on the lower side of the utility box, parts such as a spring must be added to hold the activated carbon packed in the canister. Furthermore, since the canister body, the purge hose, etc. are exposed, there are problems such as poor appearance of the vehicle and being easily subject to mischief.

  In view of such circumstances, an object of the present invention is to provide a canister arrangement structure for a motorcycle that can realize an efficient arrangement configuration of the canister and the like.

The canister arrangement structure of the motorcycle of the present invention includes a pair of left and right seat rails extending obliquely upward and rearward from the middle of the main frame, and branching from the rear end portion of the main frame and extending obliquely upward and rearward. In a motorcycle comprising a pair of left and right subframes connected to a seat rail, a storage chamber is disposed in a space surrounded by the seat rail and the subframe, and a canister and a battery are mounted at appropriate positions on the vehicle body The canister and the battery are at least partially overlapped with each other in a side view of the vehicle body, and are disposed below the storage chamber and within a range sandwiched between the main frame and the subframe, and the bottom surface of the storage chamber A portion of the battery is bulged downward to provide a convex portion, and the battery is accommodated in the convex portion space. And adjacent parts and vehicle-width direction, characterized in that disposed sandwiched by spaces by the bottom surface and the sub-frame of the storage chamber.

Further, the canister arrangement structure of the motorcycle according to the present invention includes a pair of left and right seat rails extending obliquely upward and rearward from the middle of the main frame, and extending rearward and obliquely upward from the rear end portion of the main frame. And a pair of left and right subframes connected to the seat rail, a storage chamber is disposed in a space surrounded by the seat rail and the subframe, and a canister and a battery are mounted at appropriate positions in the vehicle body. In the two-wheeled vehicle, the canister and the battery are at least partially overlapped with each other in a side view of the vehicle body, and are disposed below the storage chamber and within a range sandwiched between the main frame and the subframe. Each of the batteries is arranged with a longitudinal direction substantially parallel to a bottom surface of the storage chamber. To.

  According to the present invention, the canister and the battery are arranged in a space sandwiched between the main frame and the subframe so that at least a part thereof overlaps with each other when viewed from the side of the vehicle body. With this arrangement configuration, the canister and the battery can be arranged in the center of the vehicle as much as possible, and so-called mass concentration can be achieved. As a result, for example, the running stability of the vehicle can be improved, and the canister and the battery can be arranged side by side in the vehicle width direction so that the space can be effectively used, which can contribute to the compactness of the vehicle body. .

1 is a side view of a motorcycle according to an embodiment of the present invention. It is a right view which shows the power unit and vehicle body frame assembly periphery which concern on embodiment of this invention. It is a top view which shows the power unit and vehicle body frame assembly periphery which concern on embodiment of this invention. It is a top view of the state which removed the storage chamber around the power unit and vehicle body frame assembly which concern on embodiment of this invention. It is a side view which shows the principal part structure of the evaporation system which concerns on embodiment of this invention. It is sectional drawing which follows the AA line of FIG. It is a side view which shows the arrangement structural example of the canister which concerns on embodiment of this invention. It is a top view which shows the example of arrangement | positioning structure of the canister which concerns on embodiment of this invention. It is a side view showing the example of arrangement composition in relation to the canister and the helmet of the battery concerning the embodiment of the present invention. It is a side view which shows the example of the attachment fixing structure of the canister which concerns on embodiment of this invention. It is a perspective view which shows the example of the attachment fixing structure of the canister which concerns on embodiment of this invention. It is sectional drawing which follows the AA line of FIG. 2 which shows the example which provided the partition wall in the storage chamber which concerns on this invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a canister arrangement structure for a motorcycle according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a motorcycle 100 as an application example of the present invention. First, the overall configuration of the motorcycle 100 will be described with reference to FIG. In the drawings used in the following description including FIG. 1, the front of the vehicle is indicated by an arrow Fr, the rear of the vehicle is indicated by an arrow Rr, and the lateral right side of the vehicle is indicated by an arrow R as necessary. The left side of the vehicle is indicated by arrows L.

  The motorcycle 100 is configured by forming a vehicle body skeleton by a vehicle body frame made of steel or aluminum alloy and mounting various parts on the vehicle body frame. A configuration example of the body frame may be, for example, a so-called underbone type, and a main frame 101 extends obliquely downward and rearward from a steering head pipe 102 coupled to a front upper end portion thereof, and a seat rail is disposed in the vicinity of the rear portion of the main frame 101. 103 joins. The power unit 104 including the engine is supported at a substantially central portion of the vehicle body by the vehicle body frame.

  The steering head pipe 102 rotatably supports a front fork 105. A handle bar 106 is fixed to the upper end of the front fork 105, and a front wheel 107 is rotatably supported on the lower end side thereof. The upper part of the front wheel 107 is covered with a front fender 108. A swing arm 110 that can move up and down via a pivot shaft 109 is supported by the main frame 101 behind the power unit 104, and a rear wheel 111 is rotatably supported at the rear end of the swing arm 110. A shock absorber 112 is mounted between the rear end of the swing arm 110 and the body frame side, and a seat 113 on which a rider sits is disposed above the rear wheel 111.

  As a vehicle exterior, various vehicle body covers are supported and attached to appropriate positions such as a vehicle body frame. Although detailed illustration is omitted, a front frame cover 114 including a leg shield or the like covers the front side of the vehicle and a winker or the like is mounted. The rear frame cover 115 covers the lower side of the seat 113 or the vehicle rear side, and a winker and a brake lamp are mounted. The upper part of the rear wheel 105 is covered with a rear fender.

  2 to 4 show the power unit 104 and the surroundings of the vehicle body frame assembly. 2 is a right side view thereof, FIG. 3 is a top view thereof, and FIG. 4 is a top view of a state in which a storage chamber 116 (utility box) described later is removed. A pair of left and right seat rails 103 are coupled in front of the rear end portion of the main frame 101 and extend rearward and obliquely upward. The seat rail 103 is formed so as to bulge to the left and right as shown in FIG. 4, and a space for arranging the storage chamber 116 is formed between them. The rear portion 103A of the seat rail 103 extends substantially horizontally and is configured to support the seat 113. A pair of left and right subframes 117 are disposed on the rear side of the seat rail 103 as shown in FIG. The subframe 117 is coupled to the rear end of the main frame 101 as shown in FIG. 4 so as to form a Y shape with the main frame 101, and extends rearward and obliquely upward as shown in FIG. It extends and is respectively coupled to the vicinity of the front portion of the rear portion 103A of the seat rail 103.

  In this example, the power unit 104 has an air-cooled four-cycle single-cylinder engine. This engine mainly includes a crankcase 118 that rotatably supports and accommodates a crankshaft horizontally disposed in the left-right direction, and a front of the crankcase 118. A cylinder or a cylinder block 119 that is coupled to the cylinder and has an axis set in a substantially horizontal direction, a cylinder head 120 that is coupled to the front of the cylinder 119, and a cylinder head cover 121 that covers the cylinder head 120. Is done. The crankcase 118 is supported by a bracket 122 that extends downward from the rear end of the main frame 101.

  Referring to FIG. 1, an air cleaner 123 is supported by the main frame 101 above the engine, more specifically, above the cylinder head 120 in the intake system that supplies the air-fuel mixture to the engine. A throttle device 124 is disposed in the middle of an intake passage formed between the air cleaner 123 and the cylinder head 120. The throttle device 124 has a throttle valve that opens and closes an intake passage formed in the throttle body 125 shown in FIG. The throttle device 124 is connected to an intake port of the engine via an intake pipe 126. An injector 127 is attached to the intake pipe 126, and fuel is injected from the injector 127 into the intake air in the intake pipe 126, whereby an air-fuel mixture is supplied to the engine.

  In the exhaust system for exhausting exhaust gas from the engine, in this example, an exhaust pipe 128 (exhaust pipe) is coupled to the lower side of the cylinder head 120. Note that the exhaust pipe 128 is connected to an exhaust port 129 (FIG. 2) formed in the cylinder head 120. Combustion gas generated in the engine is exhausted from the exhaust port 129 through the exhaust pipe 128 and finally exhausted from the muffler 130 (exhaust silencer) as exhaust gas.

  In the above case, as shown in FIGS. 2 to 4 and the like, the fuel tank 131 is mounted and supported mainly on the rear portion 103A of the seat rail 103, and the space between the fuel tank 131 and the injector 127 is between the seat rail 103 and the main frame 101. It is connected by a fuel hose 132 routed along. The fuel supplied from the fuel tank 131 to the injector 127 is injected and supplied into the intake passage of the intake pipe 126 at a predetermined timing.

  Further, as shown in FIG. 2, a storage chamber 116 is disposed below the seat 113, and the storage chamber 116 is disposed in a space formed between the pair of seat rails 103 as described above. As shown in FIG. 3, the storage chamber 116 has a generally basket-shaped bottomed structure having an upper end opening 116 a that has a substantially scalloped or dome shape in plan view. In this example, the storage chamber 116 is biased to the left in the vehicle width direction. The battery 133 is stored. A canister main body 11 described later is mounted below the storage chamber 116.

  FIG. 5 shows a main configuration of the evaporation system according to the present invention. In the evaporation system 10, a ventilation path that communicates the intake system of the engine and the fuel tank is provided, and a canister that adsorbs and holds the evaporation gas (evaporated fuel) is interposed in the ventilation path, and the evaporation gas is appropriately supplied from the canister to the intake system. To supply.

  Specifically, as shown in FIG. 5, the fuel tank 131 and the canister body 11 are connected via the evaporation gas discharge pipe 12, and the evaporation gas separated from the gas and liquid in the fuel tank 131 is supplied to the canister body 11. Although the detailed description of the canister body 11 is omitted here, the canister body 11 and the throttle body 125 are connected via the purge pipe 13, and the negative pressure hose 14 is connected between the canister body 11 and the intake pipe 126. Connected through. The canister body 11 has a generally rectangular parallelepiped shape.

  Next, the arrangement structure of canisters and the like in this embodiment will be specifically described. As shown in FIG. 6, a part of the bottom surface of the storage chamber 116 bulges downward to form a convex portion 116b, and the battery 133 is stored in the space of the convex portion 116b. The battery 133 generally has a rectangular parallelepiped or box shape, and an electrode 133a is provided on the upper surface thereof. The canister body 11 is disposed adjacent to the right side in the vehicle width direction as shown in FIG. 6 and in a space sandwiched between the bottom surface 116c of the storage chamber 116 and the subframe 117 as shown in FIG. The Further, referring also to FIG. 8, the canister body 11 is disposed in a space surrounded by the main frame 101, the seat rail 103, and the sub frame 117.

  The canister main body 11 and the battery 133 arranged adjacent to each other as described above at least partially overlap each other when viewed from the side of the vehicle body as shown in FIG. 9 and substantially below the storage chamber 116 and at the main frame 101 and the subframe. It arrange | positions in the range pinched | interposed by 117. As can be seen from FIG. 9, the canister body 11 and the battery 133 are arranged so as to be substantially parallel to each other and inclined rearward so as to overlap a considerable part in a side view.

Here, the canister body 11 can be fixed to the storage chamber 116 using the storage chamber 116. For example, as shown in FIG. 7, the bracket 15 extends from the bottom surface 116 c of the storage chamber 116, and the canister body 11 is restrained and fixed by the bracket 15. Since it is not necessary to weld a bracket for mounting a canister to a vehicle body frame or the like, the canister body 11 can be accurately fixed while reducing the number of parts.
The storage chamber 116 itself is attached and fixed to the vehicle body frame side (for example, the seat rail 103) via a bracket 116d or the like protruding from the storage chamber 116 as shown in FIG. Can do.

Further, as shown in FIGS. 10 and 11, the bracket 16 can be attached to the seat rail 103, and the canister body 11 can be restrained and fixed by the bracket 16.
In this case, since the storage chamber 116 can be detached and detached separately from the canister body 11, improvement of maintainability can be achieved, for example.

  As described above, the canister body 11 fixed via the bracket 15 or the bracket 16 is arranged with the battery 133 so that the longitudinal direction thereof is substantially parallel to the bottom surface 116c of the storage chamber 116 as shown in the figure. .

  In the above case, referring to FIG. 2, the canister body 11 is arranged in a substantially triangular region formed by the main frame 101, the seat rail 103, and the subframe 117 in a side view. The purge pipe 13 or the negative pressure hose 14 led forward from the canister body 11 intersects the extension line of the seat rail 103 in the side view in the main frame 101, more specifically, below the above-described triangle. That is, the purge pipe 13 and the negative pressure hose 14 extend downward from the canister body 11 and are connected to the throttle body 125 and the intake pipe 126, respectively.

  In the above configuration, the convex portion 116b is formed on a part of the bottom surface of the storage chamber 116 as described above (FIG. 6), and the battery 133 is stored in the space of the convex portion 116b. As shown in FIG. 9, the canister body 11 and the battery 133 are arranged in a space sandwiched between the main frame 101 and the subframe 117 so that at least a part thereof overlaps each other when viewed from the side of the vehicle body.

  By adopting such an arrangement configuration, the canister body 11 and the battery 133 can be arranged in the center of the vehicle as much as possible, and so-called mass concentration can be achieved. By this mass concentration, for example, the running stability of the vehicle can be improved. Further, by arranging the canister body 11 and the battery 133 side by side in the vehicle width direction, the space can be effectively used, which can contribute to a compact body.

  Further, as shown in FIG. 12, the canister body 11 is disposed in the range sandwiched between the bottom surface 116 c of the storage chamber 116 and the subframe 117, adjacent to the convex portion 116 b on the right side in the vehicle width direction. In this case, as shown in FIG. 12, a partition wall 134 is suspended between the main part of the storage chamber 116 and the convex part 116b. The right side of the convex portion 116 b where the canister body 11 is arranged becomes a recess 135 as shown by a dotted line in FIG. 12, and the capacity of the storage chamber 116 can be obtained by arranging the canister body 11 in the space next to the battery 133 in this way. Can be secured greatly.

  Further, as shown in FIG. 9, the canister body 11 and the battery 133 are arranged with their longitudinal directions substantially parallel to the bottom surface 116 c of the storage chamber 116. When the helmet 200 is stored in the storage chamber 116, the canister body 11, the battery 133, and the helmet 200 are disposed to be inclined in the same direction along the substantially bottom surface 116 c as shown in FIG. 9. Thus, by storing these members or articles with directionality, it is possible to effectively reduce the size in this respect as well.

Further, the purge pipe 13 or the negative pressure hose 14 is routed substantially horizontally from below the canister.
By arranging in this way, the purge pipe 13 or the negative pressure hose 14 can be led out forward without straddling the main frame 101, so that they can be effectively shortened.

  Further, as shown in FIG. 1 and the like, since the fuel tank 131 is disposed behind the storage chamber 116, the canister body 11 includes the fuel tank 131 and the engine intake system (the throttle device 124 and its peripheral members). It is arranged between. Therefore, the lengths of the purge pipe 13 and the negative pressure hose 14 can be effectively shortened as compared with the case where the canister is disposed below the fuel tank 131.

As mentioned above, although this invention was demonstrated with various embodiment, this invention is not limited only to these embodiment, A change etc. are possible within the scope of the present invention.
For example, in the above-described embodiment, in the storage chamber 116, the battery 133 is disposed on the left side in the vehicle width direction and the canister body 11 is disposed on the right side.

DESCRIPTION OF SYMBOLS 10 Evaporation system, 11 Canister body, 12 Evaporative gas discharge pipe, 13 Purge pipe, 14 Negative pressure hose, 15, 16 Bracket, 100 Motorcycle, 101 Main frame, 102 Steering head pipe, 103 Seat rail, 104 Power unit, 105 Front fork , 107 Front wheel, 108 Front fender, 109 Pivot shaft, 110 Swing arm, 111 Rear wheel, 113 Seat, 114 Front frame cover, 115 Rear frame cover, 116 Storage chamber, 117 Sub frame, 118 Crank case, 119 Cylinder block, 120 Cylinder head, 121 Cylinder head cover, 123 Air cleaner, 124 Throttle device, 125 Throttle body, 126 Intake pie , 127 injector, 128 exhaust pipe, 129 exhaust port, 131 a fuel tank, 132 a fuel hose, 133 battery.

Claims (2)

A pair of left and right seat rails extending obliquely upward and rearward from the middle of the main frame, and a pair of left and right subframes branching from the rear end of the main frame and extending obliquely upward and connected to the seat rails In a motorcycle in which a storage chamber is disposed in a space surrounded by the seat rail and the subframe, and a canister and a battery are mounted at appropriate positions on the vehicle body,
The canister and the battery are at least partially overlapped with each other in a side view of the vehicle body, and are disposed below the storage chamber and within a range sandwiched between the main frame and the sub frame,
A portion of the bottom surface of the storage chamber bulges downward to provide a convex portion, and the battery is stored in the convex space.
The canister arrangement structure for a motorcycle, wherein the canister is arranged adjacent to the convex portion in a vehicle width direction and sandwiched between a bottom surface of the storage chamber and the subframe . A pair of left and right seat rails extending obliquely upward and rearward from the middle of the main frame, and a pair of left and right subframes branching from the rear end of the main frame and extending obliquely upward and connected to the seat rails In a motorcycle in which a storage chamber is disposed in a space surrounded by the seat rail and the subframe, and a canister and a battery are mounted at appropriate positions on the vehicle body,
The canister and the battery are at least partially overlapped with each other in a side view of the vehicle body, and are disposed below the storage chamber and within a range sandwiched between the main frame and the sub frame,
A canister arrangement structure for a motorcycle, wherein the canister and the battery are arranged with their longitudinal directions substantially parallel to the bottom surface of the storage chamber.

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