JP2014025393A - Evaporative fuel supply device and motorcycle including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an evaporative fuel supply device downsized as compared with a conventional one.SOLUTION: An evaporative fuel supply device 1 includes a canister 22 and an on-off valve 23. The canister 22 includes an outlet part 31c for exhausting sucked gasoline vapor. The on-off valve 23 includes a valve inlet part 23b and a valve outlet part 23c to open/close between them. The canister 22 and the on-off valve 23 are arranged adjacently in a right-left direction and mutually fixed, and an inlet part 31b, the outlet part 31c, the valve inlet part 23b, and the valve outlet part 23c are extended backward. The outlet part 31c and the valve inlet part 23b are connected to each other by a connecting pipe 26, and the connecting pipe 26 has a folding part on an intermediate portion.

Description

  The present invention relates to an evaporated fuel supply device for supplying evaporated fuel in a fuel tank to an intake passage connected to an engine, and a motorcycle including the same.

  The gasoline stored in the fuel tank of the motorcycle evaporates into gasoline vapor and remains in the upper space inside the fuel tank. If gasoline continues to evaporate, the internal pressure of the fuel tank will increase, so the gasoline vapor must be released out of the fuel tank. As an example of releasing to the outside of the fuel tank, for example, it is conceivable to release it to the atmosphere. However, in some areas, it is regulated to release gasoline vapor to the atmosphere. It can also contribute. As a system for solving such a problem, for example, an evaporated fuel supply device described in Patent Document 1 is known.

JP 2001-253254 A

  In the evaporation system described in Patent Document 1, the canister and the purge valve are fixed at separate positions, and their directions are changed and connected to each other by a pipe portion. Specifically, the purge valve is disposed so as to extend along a direction orthogonal to the longitudinal direction of the canister, and the evaporated fuel supply device is widely formed in a direction orthogonal to the longitudinal direction of the canister.

  When the vehicle body is large like an automobile, the evaporative fuel supply device is arranged in a wide engine room, so that the evaporative fuel supply device has a high degree of freedom in shape and arrangement. On the other hand, in a motorcycle, it is necessary to mount a large number of components in a small vehicle body, and the degree of freedom in the shape and arrangement of the evaporated fuel supply device is low. Therefore, the demand for downsizing each component is even greater than in the case of an automobile, and it is desired to downsize the fuel vapor supply device.

  Accordingly, an object of the present invention is to provide a fuel vapor supply apparatus that is smaller than the conventional one.

  An evaporative fuel supply apparatus according to the present invention is an evaporative fuel supply apparatus for supplying evaporative fuel in a fuel tank to an intake passage connected to an engine, the tank pipe connected to the fuel tank, and the tank pipe via the tank pipe An inlet portion connected to the fuel tank and an outlet portion communicating with the inlet portion, adsorbing the evaporated fuel flowing in from the inlet portion and discharging the adsorbed evaporated fuel from the outlet portion A canister, a connecting pipe connected to the outlet part of the canister, a valve inlet part connected to the outlet part of the canister via the connecting pipe, and a valve outlet part communicating with the valve inlet part, An opening / closing valve that opens and closes between a valve inlet portion and the valve outlet portion; and a supply pipe that connects the valve outlet portion and the intake passage. The canister and the opening / closing valve include: Are arranged so as to be adjacent to each other and fixed to each other, and at least one of the inlet portion and the valve outlet portion, the outlet portion, and the valve inlet portion in one direction in the second direction orthogonal to the first direction. The connecting pipe has an outlet portion connected to one end, the valve inlet portion connected to the other end, and a folded portion at an intermediate portion.

  According to the present invention, since the canister and the opening / closing valve are disposed adjacent to each other in the first direction and are fixed to each other, it is possible to suppress an increase in the length of the evaporated fuel supply device in the first direction. In addition, since the outlet portion of the canister and the valve inlet portion of the opening / closing valve extend in one direction in the second direction, and the folded portion is formed in the intermediate portion of the connecting pipe connecting them, the canister and the opening / closing valve are connected to each other. It is possible to make them close in one direction. Moreover, since the connecting pipe extends in the second direction in which the outflow port or the valve outlet extends, even if the connecting pipe is provided, the length of the entire apparatus in the second direction is not substantially increased. Therefore, an increase in the length of the evaporated fuel supply device in the first direction is suppressed. As a result, the fuel vapor supply device can be reduced in size compared to the conventional one.

  In the above invention, the inlet portion and the outlet portion are formed at the base portion of the canister so as to protrude from the base portion of the canister in the second direction, and the valve inlet portion and the valve outlet portion are It is preferable that the opening / closing valve is formed at the base of the opening / closing valve so as to protrude in one direction in the second direction.

  According to the above configuration, since the outlet portion, the inlet portion, the valve inlet portion, and the valve outlet portion all extend in the same direction, the outlet portion when the canister and the open / close valve are disposed adjacent to each other in the first direction. In addition, the inlet portion can interfere with the open / close valve, and the valve inlet portion and the valve outlet portion can be prevented from interfering with the canister. In addition, since all of the outlet, inlet, valve inlet, and valve outlet extend in the same direction from the respective bases, it is easy to attach and detach the tank pipe, connecting pipe, and supply pipe. Can be.

  In the above invention, the canister has a generally long shape and is disposed so as to extend in the second direction, and the open / close valve is perpendicular to the longitudinal direction of the canister with respect to the canister. Adjacent to one direction is preferable.

  If the said structure is followed, it can prevent that the length of the 1st direction of an evaporative fuel supply apparatus becomes large, ensuring the capacity | capacitance of a canister.

  In the above invention, the open / close valve is preferably fixed integrally to the canister.

  According to the above configuration, since the canister and the opening / closing valve are integrated, the fuel vapor supply apparatus can be unitized. Thereby, for example, the evaporative fuel supply apparatus can be easily attached in a narrow place, and the work efficiency can be improved.

  A motorcycle according to the present invention includes the evaporative fuel supply device according to any one of the above, the fuel tank, the engine, and the intake passage, and the canister and the opening / closing valve The fuel tank and the intake passage are located on one side in the second direction.

  According to the above configuration, the inlet portion faces the fuel tank and the valve outlet portion faces the intake passage. Thereby, compared with the case where an inflow port part and a valve | bulb exit part are facing the mutually opposite side, the tube for tanks and the tube for supply can be shortened.

  In the above invention, the fuel vapor supply apparatus includes: a frame that supports the engine; a front fork that pivotally supports a front wheel; and a cowl that covers at least a portion of the frame; Is provided on the inner side of the cowl, the canister is disposed on the outer side in the vehicle width direction of the front fork, and the opening / closing valve is located on the inner side in the vehicle width direction with respect to the canister and behind the front fork. It is preferable that the front fork is disposed outside the rotation trajectory.

  According to the above configuration, the evaporated fuel supply device can be disposed in the space inside the narrow cowl while avoiding the front fork. Thereby, it can prevent that an evaporative fuel supply apparatus contacts with the ground, or contacts with another vehicle and is damaged.

  According to this invention, it can reduce in size compared with the conventional one.

It is a side view showing a motorcycle provided with an evaporated fuel supply device of this embodiment. FIG. 2 is an enlarged perspective view of the front portion of the motorcycle shown in FIG. 1 as viewed from the upper right with the front cowl removed. FIG. 2 is a plan view of the motorcycle shown in FIG. It is a figure which shows the connection relation of an evaporative fuel supply apparatus. It is the expansion perspective view which looked at the evaporative fuel supply apparatus from back. FIG. 6 is a perspective view showing a tank pipe, a connecting pipe, and a supply pipe attached to the evaporated fuel supply apparatus of FIG. 5. It is the perspective view which looked at the fuel vapor supply apparatus of FIG. 6 from the front.

  Hereinafter, a motorcycle 2 including an evaporated fuel supply device 1 according to an embodiment of the present invention will be described with reference to the drawings. In addition, the concept of the direction used in the following description is based on the direction seen from the driver riding on the motorcycle 2. The evaporative fuel supply device 1 and the motorcycle 2 described below are only one embodiment of the present invention. Therefore, the present invention is not limited to the embodiments, and additions, deletions, and changes can be made without departing from the spirit of the invention.

[Motorcycle]
FIG. 1 is a right side view of a motorcycle 2 including a fuel vapor supply device 1 according to a first embodiment of the present invention. As shown in FIG. 1, the motorcycle 2 includes a vehicle body 3, a front wheel 4, and a rear wheel 5. The front wheel 4 is rotatably supported by a lower end portion of a front fork 6 that extends substantially in the vertical direction. As shown in FIGS. 1 to 3, the front fork 6 is supported by a steering shaft 9 via an upper bracket 7 provided at an upper end portion thereof and an under bracket 8 provided below the upper bracket 7. Yes. The steering shaft 9 is rotatably supported by the head pipe 10. Handles 11L and 11R (see also FIG. 1) are attached to the left and right ends of the upper bracket 7, respectively. The left and right handles 11L and 11R extend leftward and rightward from the upper bracket 7, respectively, so that the driver can hold each with both hands. Further, in the motorcycle 2, the driver can turn the front wheels 4 in a desired direction by rotating the steering shafts 11 in the head pipe 10 by rotating the handles 11L and 11R. Yes.

  As shown in FIGS. 1 and 3, a pair of left and right main frames 13 are integrally provided on a head pipe 10 that constitutes a part of the vehicle body 3. The pair of left and right main frames 13 extends rearward while slightly tilting downward from the head pipe 10, and a pair of left and right pivot frames 14 are connected to the rear end of the main frame 13. A front end portion of a swing arm 15 extending substantially in the front-rear direction is pivotally supported on the pivot frame 14, and a rear wheel 5 is rotatably supported on the rear end portion of the swing arm 15. A fuel tank 16 is placed on the pair of main frames 13 behind the head pipe 10, and a seat 17 for riding a driver is provided behind the fuel tank 16.

  Further, as shown in FIG. 1, a parallel four-cylinder engine E is mounted below the fuel tank 16 and between the front wheels 4 and the rear wheels 5 while being supported by the main frame 13 and the pivot frame 14. ing. A transmission (not shown) is connected to the engine E, and a driving force output from the transmission is transmitted to the rear wheel 5 via a chain (not shown). A throttle device 18 disposed inside the main frame 13 is connected to an intake port (not shown) of the engine E. An air cleaner 19 disposed below the fuel tank 16 is connected to the upstream side of the throttle device 18 and is configured to take in outside air using traveling wind pressure from the front F. An engine ECU (electronic control unit) 40 that controls the operation of the evaporated fuel supply device 1 and the throttle device 18 is accommodated in the internal space below the seat 17.

  As shown in FIG. 2, a headlamp unit 20 is disposed in front F of the handles 11L and 11R, and a portion of the headlamp unit 20 excluding the outer lens is formed in a substantially U shape in plan view. The front end of the front cowl 21 is covered from the front F. Further, as shown in FIG. 1, the front cowl 21 is covered so as to cover both the left and right sides of the upper portion of the head pipe 10 and the front fork 6. That is, the front cowl 21 is covered so as to cover the front side and the left and right sides of the front portion of the vehicle body 3, and the rear end portion extends to the rear R on the left and right sides of the engine E.

  A regulator (not shown) is provided between the left inner surface portion of the front cowl 21 thus configured and the front fork 6. As shown in FIG. 3, the evaporated fuel supply device 1 is disposed at a position opposite to the regulator, that is, on the right side of the head pipe 10, and the evaporated fuel supply device 1 is fixed to the right inner surface portion of the front cowl 21. ing. The evaporative fuel supply device 1 fixed in this manner is disengaged to the right (that is, outside) of the turning trajectory of the front fork 6 (see the two-dot chain line in FIG. 3) when the handles 11L and 11R are turned. In this manner, the front fork 6 is disposed at the rear R. More specifically, when the right front fork 6 is located at the rearmost position, the right front fork 6 is disposed adjacent to the right front fork 6. The configuration of the evaporated fuel supply device 1 arranged in this way will be described in detail below.

[Evaporated fuel supply device]
The evaporative fuel supply device 1 is a device for supplying the fuel evaporated in the fuel tank 16, that is, gasoline vapor, to the throttle device 18. As shown in FIG. 4, the evaporated fuel supply apparatus 1 basically has a canister 22 and an opening / closing valve 23. The canister 22 has an elongated rectangular parallelepiped box 31 (base portion) extending in the front-rear direction (second direction) of the vehicle body. In the box 31, an adsorbent that adsorbs evaporated gasoline, specifically, Contains activated carbon. In addition, an inlet 31a is formed at the front end of the box 31, and an inlet 31b and an outlet 31c are formed at the rear.

  The intake port portion 31a is a cylindrical protruding portion extending forward F, and can take in outside air. In addition, the inflow port portion 31 b is a cylindrical protruding portion that extends to the rear R, which is one side in the second direction, and is connected to the fuel tank 16 via the tank pipe 25. As a result, the gasoline evaporated in the fuel tank 16 is guided into the box body 31 via the tank pipe 25 and the inflow port portion 31 b and further adsorbed by the activated carbon in the box body 31. Further, the adsorbed gasoline vapor is separated from the activated carbon by the outside air taken in from the intake port portion 31a, that is, air, and flows out of the box body 31 from the outlet portion 31c together with the air. Further, the outlet part 31 c is connected to the open / close valve 23 via the connecting pipe 26.

  The on-off valve 23 is a solenoid-type on-off valve, and is configured to open and close the passage according to a command input thereto. More specifically, the open / close valve 23 includes a valve body 23a, a valve inlet portion 23b, and a valve outlet portion 23c. A valve body 23a, which is a base portion of the on-off valve 23, is formed in a box shape, and a valve inlet portion 23b and a valve outlet portion 23c are formed at the rear end thereof. The valve inlet portion 23b and the valve outlet portion 23c are cylindrical protrusions extending rearward R, and the valve inlet portion 23b is connected to the outlet portion 31c of the canister 22 via the connecting pipe 26. 23 c is connected to the throttle device 18 via a supply pipe 27.

  The throttle device 18 has four intake passages 41, and each intake passage 41 is individually connected to a cylinder 42 of the engine E. Each intake passage 41 is provided with a throttle valve 43 so as to block the intake passage 41, and the throttle valve 43 is rotated in response to an accelerator operation. The opening degree of the intake passage 41 can be adjusted by rotating the throttle valve 43. In addition, an injector 44 is provided in the intake passage 41, and gasoline in the fuel tank 16 is injected into the intake passage 41 by the injector 44. The injector 44 is disposed on the downstream side of the throttle valve 43 in the intake passage 41. A steam supply port 45 is formed on the downstream side of the throttle valve 43. The steam supply port 45 is connected to the valve outlet 23 c of the open / close valve 23 via the supply pipe 27.

  As described above, the open / close valve 23 connected to the throttle device 18 through the supply pipe 27 has a passage connecting the valve inlet 23b and the valve outlet 23c inside the valve body 23a. The valve main body 23a is electrically connected to the engine ECU 40 via a connector 23d formed so as to protrude rearward R from the valve main body 23a. The valve body 23a opens a passage when an open signal is sent from the engine ECU 40. Since the intake pipe has a negative pressure with respect to the passage, when the valve body 23a opens the passage while the engine E is driving, the evaporated fuel flows between the intake air and the outside air. On the other hand, when the opening signal from the engine ECU 40 is interrupted, the valve body is returned to the original position and the passage is closed. In this way, the opening / closing valve 23 opens and closes between the valve inlet portion 23b and the valve outlet portion 23c, that is, opens and closes between the canister 22 and the throttle device 18 in accordance with a command from the engine ECU 40.

  More specifically, the engine ECU 40 includes a vehicle speed sensor that measures the vehicle speed of the motorcycle 2, a rotation sensor that measures the rotational speed of the engine E, and a combustion gas sensor that measures the concentration of a specific component gas contained in the exhaust gas. The open / close valve 23 is opened and closed based on signals from these various sensors. That is, the engine ECU 40 supplies the evaporated fuel to the throttle device 18 at a timing according to the running state of the motorcycle 2 and the engine state.

  More specifically, the engine ECU 40 transmits a signal to the opening / closing valve 23 to open the passage and supply the evaporated fuel to the throttle device 18 when a predetermined condition described below is satisfied while the engine E is being driven. It is like that. The predetermined condition is, for example, a small influence on fluctuations in fuel supply balance and travel feeling (for example, when traveling at a constant speed or when no combustion condition is detected).

  Below, arrangement | positioning etc. of the evaporative fuel supply apparatus 1 are demonstrated in detail. As shown in FIGS. 2 and 3, the canister 22 is fixed to the inner surface of the front cowl 21 by a bracket 24. Further, as shown in FIGS. 5 to 7, the bracket 24 has a bracket body 24a formed in a generally U shape when viewed from the rear R, and the canister 22 is fitted into the inner space of the bracket body 24a. Is housed in. Further, the bracket body 24a is disposed with the opening facing the inner surface of the front cowl 21 so as to close the U-shaped opening, and three flange portions 24b for attaching the bracket body 24a to the front cowl 21. 24d is formed at each end of the bracket body 24a.

  The flange portions 24b to 24d extend outward (upward or downward) from both end portions of the bracket body 24a, are arranged along the inner surface portion of the front cowl 21, and are fastened thereto. Thus, the canister 22 is arranged so that its longitudinal direction extends in the front-rear direction (second direction), and is fixed to the inner surface of the front cowl 21. Further, in the bracket main body 24a, a valve mounting portion 24f protrudes from the rear end portion of the side plate portion 24e that is positioned to the left with respect to the front cowl 21. The valve mounting portion 24f has a connecting portion 24g and a mounting portion 24h. The connecting portion 24g extends rearward R from the rear end portion of the side plate portion 24e, and the attachment portion 24h extends away from the front cowl 21, that is, extends leftward from the distal end portion of the connecting portion 24g. Yes. An opening / closing valve 23 is fastened to the mounting portion 24h.

  The on-off valve 23 is attached to the attachment portion 24h so that the base end surface faces rearward R and the surface opposite to the rear end portion extends along the attachment portion 24h. The on-off valve 23 attached in this way is disposed adjacent to the left side of the canister 22 and close to the rear end of the canister 22, and is integrally fixed to the canister 22 via a bracket 24. By arranging them adjacently in this manner, the front-rear direction length L1 and the left-right direction (first direction) length L2 of the evaporative fuel supply device 1, that is, the elongate length of the evaporative fuel supply device 1 are determined. The thickness and width can be made smaller than those of the evaporated fuel supply device described in Patent Document 1. That is, the fuel vapor supply device 1 can be downsized. Moreover, these can be unitized by attaching the canister 22 and the opening / closing valve 23 to the bracket 24. Furthermore, the evaporative fuel supply device 1 can be attached to the front cowl 21 so that the front cowl 21 and the evaporative fuel supply device 1 can be unitized. Thereby, the attachment work of the evaporative fuel supply apparatus 1 in the narrow place inside the front cowl 21 like this embodiment becomes easy, and work efficiency can be improved.

  In this way, the evaporated fuel supply device 1 attached to the front cowl 21 is disposed above the front wheel 4 and at substantially the same height as the main frame 13. Therefore, the canister 22 and the opening / closing valve 23 can be disposed closer to the fuel tank 16 and the throttle device 18, and the lengths of the tank pipe 25 and the supply pipe 27 can be shortened. Further, in the space outside the main frame 13 and inside the front cowl 21, the head pipe 10 and the front fork 6 are disposed so as to overlap each other in a side view, so that the space in the front cowl 21 can be used effectively. it can.

  Further, the valve inlet 23b and the valve outlet 23c of the opening / closing valve 23 extend in the same direction as the inlet 31b and outlet 31c of the canister 22, that is, the rear R, as shown in FIG. As shown in FIG. 3, the fuel tank 16 and the throttle device 18 are positioned ahead of the direction in which the outlet 31c and the valve outlet 23c extend. Thereby, it can prevent that the pipe | tube 25 for tanks and the pipe | tube 27 for supply are curved and arrange | positioned. Therefore, it is possible to prevent the tank pipe 25 and the supply pipe 27 from becoming longer.

  The piping of the tank pipe 25 and the supply pipe 27 will be described in more detail. As shown in FIG. 2, the tank pipe 25 extends inside the main frame 13, and the portion of the supply pipe 27 on the canister 22 side is The main frame 13 is disposed so as to pass through, and is disposed so as to pass from below the main frame 13 through the middle portion in the front-rear direction of the main frame 13 and enter the main frame 13. In the space between the pair of left and right main frames 13, various components are arranged in a narrow area in the region on the steering shaft 9 side. By wiring the portion on the canister 22 side of the supply pipe 27 as described above, piping can be performed while avoiding the space, and interference between the supply pipe 27 and other components can be prevented. Note that the tank pipe 25 can be prevented from interfering with other configurations by performing the same wiring as the supply pipe 27.

  Further, since the outlet portion 31c and the valve inlet portion 23b are oriented in the same direction, the connecting pipe 26 that connects the outlet portion 31c and the valve inlet portion 23b has a substantially U-shaped pipe having a folded portion in the middle portion. Is used. By using the generally U-shaped pipe in this way, the canister 22 and the opening / closing valve 23 can be disposed close to each other in the left-right direction as described above, and the width of the evaporated fuel supply device 1 is It can be shorter than the evaporative fuel supply device.

  In this embodiment, the outer diameter dimensions of the outlet part 31c and the valve inlet part 23b are different. Therefore, the connecting pipe 26 has an L-shaped joint part 26a and a tube part 26b so as to be connected to the outlet part 31c and the valve inlet part 23b having different external dimensions. The L-shaped joint part 26a is an L-shaped joint pipe part having openings at both ends, and the outlet part 31c of the canister 22 is connected to one of the openings. The L-shaped joint portion 26a is a resin molded product, and has a bent portion 26c bent at a substantially right angle at an intermediate portion. In the joint portion 26a, the other opening on the tip side from the bent portion 26c is arranged toward the valve inlet portion 23b of the on-off valve 23 (that is, toward the left). The valve inlet portion 23b is connected to a tube portion 26b having a smaller outer dimension than the outlet portion 31c and a smaller diameter than the joint portion 26a. The tube portion 26b has flexibility, is bent in an arc shape from the valve inlet portion 23b to which one end thereof is connected, and is inserted into the other opening portion of the joint portion 26a. Thus, the connecting pipe 26 can connect the outlet portion 31c and the valve inlet portion 23b having different external dimensions. Moreover, in the connection 26, the joint part 26a is formed with resin, and the joint part 26a is not bent as compared with the tube part 26b. Therefore, errors in dimensions and positioning are absorbed by the flexible tube portion 26b.

  Further, the connecting pipe 26 protrudes from the rear space 1R (see FIG. 3) of the evaporated fuel supply device 1, and the rear space 1R includes a tank pipe 25 that connects the fuel tank 16 and the inlet 31b, A supply pipe 27 that connects the valve outlet 23c and the throttle device 18 extends. The connecting pipe 26 is formed and arranged in a U shape having a folded portion at an intermediate portion in the rear space 1R. In the rear space 1R, the tank pipe 25 and the supply pipe 27 are originally extended, and even if the connecting pipe 26 protrudes in this direction, the overall size of the evaporated fuel supply apparatus 1 does not increase. Therefore, it is possible to substantially prevent the length of the evaporative fuel supply apparatus 1 from increasing in the front-rear direction. Further, since the connecting pipe 26 is disposed in the rear space 1R, it is possible to prevent the elongate length and the vertical length of the evaporated fuel supply device 1 from being expanded. Thereby, it is possible to arrange the evaporated fuel supply device 1 on the inner surface of the front cowl 21 without interfering with other parts.

  Furthermore, the outflow port portion 31c is arranged outside the outflow port portion 31c at the rear end portion of the box body 31, and is arranged away from the valve inlet portion 23b. That is, the outflow port portion 31 c is arranged close to the front cowl 21 side at the rear end portion of the box body 31. Thereby, the space | interval of the outflow port part 31c and the valve | bulb inlet part 23b can be taken large, and the curvature radius of the tube part 26b can be enlarged. Therefore, a material having high rigidity can be used for the tube portion 26b, and the rigidity of the connecting pipe 26 can be improved.

  Further, since all of the valve inlet 23b, the valve outlet 23c, the inlet 31b, and the outlet 31c protrude rearward R, even if the canister 22 and the opening / closing valve 23 are adjacent in the left-right direction, interference occurs. There are no parts, making it easy to bring them close together. Moreover, since all of the valve inlet 23b, the valve outlet 23c, the inlet 31b, and the outlet 31c protrude rearward R, the tank pipe 25, the connecting pipe 26, and the supply pipe 27 can be attached and detached. Easy.

  In the evaporated fuel supply device 1 of the present embodiment, the canister 22 and the opening / closing valve 23 are arranged adjacent to each other via a bracket 24. Therefore, the connecting pipe 26 can be shortened as compared with the case where the canister 22 and the opening / closing valve 23 are arranged apart from each other. In addition, the outlet 31c and the valve inlet 23b face in the same direction, and the rear end of the open / close valve 23 where the valve inlet 23b is formed is the rear end of the canister 22 where the outlet 31c is formed. It is arranged close to the part. Therefore, it is possible to further shorten the length of the connecting pipe 26, which has a higher manufacturing cost than a normal pipe for circulating the evaporated fuel, and to reduce the manufacturing cost of the evaporated fuel supply device 1.

  Further, in the evaporated fuel supply apparatus 1 of the present embodiment, the entire evaporated fuel supply apparatus 1 is prevented from becoming larger as compared with the case where the valve harness extends in the left-right direction with the connector 23d of the open / close valve 23 being rearward. be able to.

  Further, in the fuel vapor supply device 1 of the present embodiment, the other opening of the joint portion 26a can be positioned above the valve inlet portion 23b, so that an L-shaped joint portion 26a is adopted for the connecting pipe 26. As compared with the case where the outlet part 31c and the valve inlet part 23b are connected with one tube-like pipe, the tube part 26b can be prevented from being bent or spread outward. Thereby, the distance of the outflow port part 31c and the valve | bulb inlet part 23b can be shortened, ensuring the flow-path area in the connection pipe 26, and suppressing that the connection pipe 26 spreads in the left-right direction. In addition, the above description does not exclude that the connecting pipe 26 is configured by a single tube-like pipe, and the connecting pipe 26 is configured by a single tube-like pipe when it is allowed to spread outward. May be.

  Further, in the fuel vapor supply apparatus 1, the canister 22 is formed in an elongated rectangular parallelepiped shape so as to extend in the front-rear direction. Accordingly, it is possible to prevent the evaporative fuel supply apparatus 1 from becoming long while securing the capacity necessary for adsorbing substantially all of the gasoline vapor evaporated and guided in the fuel tank 16 in the canister 22. Furthermore, by disposing the evaporative fuel supply device 1 inside the front cowl 21, it is possible to prevent the evaporative fuel supply device 1 from coming into contact with the ground or coming into contact with another vehicle and being damaged.

  Moreover, in the evaporated fuel supply apparatus 1 of this embodiment, the evaporated fuel supply apparatus 1 is arrange | positioned on the opposite side to a regulator. Therefore, in the motorcycle 2, the space between the front cowl 21 and the front fork 6 can be reduced as compared with the case where the evaporated fuel supply device 1 is disposed on the same side as the regulator. The in-vehicle device arranged in the space opposite to the side where the evaporated fuel supply device 1 is arranged is not limited to the regulator, and an antitheft device may be arranged.

  Furthermore, in the fuel vapor supply apparatus 1 according to the present embodiment, the inlet 31b and the outlet 31c are located inside the outer peripheral edge of the rear surface of the canister 22. Therefore, even if clamp members for fixing the tank pipe 25 and the joint portion 26a are provided in the inflow port portion 31b and the outflow port portion 31c, the clamp member is prevented from protruding in the width direction and the vertical direction. Can do.

  Further, in the case of a saddle-ride type vehicle such as the motorcycle 2, the lateral dimension is shorter than the longitudinal dimension. Therefore, by arranging the canister 22 so that the longitudinal direction of the canister 22 extends in the front-rear direction of the motorcycle 2 as in the evaporated fuel supply apparatus 1 of the present embodiment, the motorcycle 2 is widened in the left-right direction. Can be prevented. The canister 22 is not necessarily arranged horizontally, and may be arranged to be inclined in the vertical direction with respect to the horizontal plane.

[Other Embodiments]
In the above-described embodiment, the evaporated fuel supply device 1 is provided on the inner surface on the right side of the front cowl 21, but the position of the evaporated fuel supply device 1 is not limited thereto. For example, the arrangement position of the evaporated fuel supply device 1 may be the left inner surface portion of the front cowl 21 or may be below the engine E. Further, as shown in FIG. 1, the evaporated fuel supply device 1 may be attached to a rear frame 51 extending rearward R from the seat 17 via a bracket 24, and the evaporated fuel supply device 1 is attached to a rear cowl 52 that covers the rear frame 51. May be. Further, even the motorcycle 2 that does not include the front cowl 21 may be attached to the inner surface of the bikini cowl that covers only the headlamp unit 20, or may be attached to the inside of the shroud that guides the running wind to the radiator.

  In the embodiment described above, the valve inlet portion 23b, the valve outlet portion 23c, the inlet portion 31b, and the outlet portion 31c all extend in the same direction, but the valve outlet portion 23c and the inlet portion 31b Either one may extend in a different direction from the other three mouths. Even in this configuration, the connecting pipe 26 extends in the same direction as either the tank pipe 25 or the supply pipe 27. Therefore, the influence of the connecting pipe 26 on the overall dimensions of the evaporated fuel supply device 1 is small, and the same effects as the evaporated fuel supply device 1 of the present embodiment can be achieved.

  In the embodiment described above, the canister 22 and the opening / closing valve 23 are integrated via the bracket 24, but the opening / closing valve 23 may be directly fixed to the canister 22 without using the bracket 24. This also has the same effect as the evaporative fuel supply apparatus 1 of the above-described embodiment.

  Furthermore, in the above-described embodiment, the case where the evaporated fuel supply device 1 is applied to the motorcycle 2 has been described. However, all vehicles equipped with an engine such as a three or more riding type buggy vehicle (for example, ATV) or a four-wheel vehicle. Can be applied to.

DESCRIPTION OF SYMBOLS 1 Evaporated fuel supply apparatus 2 Motorcycle 6 Front fork 16 Fuel tank 18 Throttle apparatus 21 Front cowl 22 Canister 23 Electromagnetic switching valve 23b Valve inlet part 23c Valve outlet part 24 Bracket 25 Tank pipe 26 Connection pipe 27 Supply pipe 31b Inlet Part 31c Outlet part 41 Intake passage 51 Rear frame 52 Rear cowl

Claims (6)

An evaporative fuel supply device for supplying evaporative fuel in a fuel tank to an intake passage connected to an engine,
A tank pipe connected to the fuel tank;
An inlet portion connected to the fuel tank via the tank pipe and an outlet portion communicating with the inlet portion; adsorbed evaporated fuel flowing from the inlet portion; A canister that discharges from the outlet,
A connecting pipe connected to the outlet of the canister;
Opening and closing that has a valve inlet connected to the outlet of the canister via the connecting pipe and a valve outlet connected to the valve inlet, and opens and closes between the valve inlet and the valve outlet. A valve,
A supply pipe that connects the valve outlet and the intake passage;
The canister and the open / close valve are arranged adjacent to each other in the first direction and fixed to each other,
At least one of the inlet portion and the valve outlet portion, the outlet portion and the valve inlet portion are directed in one direction in a second direction perpendicular to the first direction;
The connection pipe has an evaporative fuel supply device in which the outlet portion is connected to one end portion, the valve inlet portion is connected to the other end portion, and a folded portion is provided in an intermediate portion. The inflow port portion and the outflow port portion are formed at the base portion of the canister so as to protrude in one of the second directions from the base portion of the canister,
2. The evaporated fuel supply device according to claim 1, wherein the valve inlet portion and the valve outlet portion are formed at a base portion of the open / close valve so as to protrude in one of the second directions from a base portion of the open / close valve.   The evaporative fuel supply apparatus according to claim 1, wherein the canister has a substantially long shape and is disposed so as to extend in the second direction.   The evaporative fuel supply apparatus according to any one of claims 1 to 3, wherein the on-off valve is integrally fixed to the canister. An evaporative fuel supply device according to any one of claims 1 to 4,
The fuel tank;
The engine;
A motorcycle comprising the intake passage,
The motorcycle, wherein the fuel tank and the intake passage are located on one side in the second direction with respect to the canister and the opening / closing valve. A frame that supports the engine;
A front fork that pivotally supports the front wheel and is rotatably provided on the frame;
A cowl covering at least a portion of the frame;
The evaporated fuel supply device is provided inside the cowl,
The canister is disposed outside the front fork in the vehicle width direction,
The motorcycle according to claim 5, wherein the opening / closing valve is located on the inner side in the vehicle width direction from the canister and is disposed behind the front fork and outside the trajectory of the front fork.

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