JP3157440U - vehicle - Google Patents

Abstract

There is provided a vehicle capable of suppressing a decrease in intake efficiency while suppressing the fuel sprayed from an upstream injector from adhering to an inner wall surface of a movable funnel to cause dripping of the fuel. A motorcycle (vehicle) includes a fixed funnel 36 that guides air to an intake port 17a of an engine 14 and a movable funnel 37 that is movably disposed up and down toward an opening 36a and guides air together with the fixed funnel 36. And the cleaner box 24 including the air filter 28 that is an inlet for the inflowing air, and the center line L1 of the fixed funnel 36, which is disposed on the opposite side of the air filter 28 and sprays fuel toward the movable funnel 37. The movable funnel 37 is configured so that at least the main flow portion of the fuel spray from the upstream injector 39 does not adhere to the inner wall surface in the movement locus. [Selection] Figure 3

Description

  The present invention relates to a vehicle, and more particularly, to a vehicle including a funnel for guiding air to an intake port of an engine and an injector for spraying fuel.

  2. Description of the Related Art Conventionally, a motorcycle (vehicle) including a funnel for guiding air to an intake port of an engine and an injector for spraying fuel is known (for example, see Patent Document 1). In Patent Document 1, an air cleaner including an air filter that is an air introduction source for introducing air to an engine, a first funnel (fixed funnel) fixed in the air cleaner, and an upper side of the first funnel are arranged. There is disclosed a motorcycle including a second funnel and an upstream injector provided above the second funnel and spraying fuel toward the second funnel. In this motorcycle, center lines in the width direction of the first funnel, the second funnel, and the upstream injector are configured to coincide with each other. Thereby, it is possible to suppress the fuel sprayed from the upstream injector from adhering to the inner wall surface of the second funnel and causing dripping.

JP 2006-132371 A

  However, since the motorcycle described in Patent Document 1 is configured such that the center lines in the width direction of the first funnel and the second funnel coincide with the upstream injector, the upstream injector is located above the second funnel. And it arrange | positions on the extension line | wire of the centerline of the width direction of a 1st funnel and a 2nd funnel. For this reason, there is an inconvenience that the air flow that passes through the air filter and flows into the second funnel is easily inhibited by the upstream injector located above the center line of the second funnel. As a result, since the flow resistance of the air flowing into the second funnel increases, there is a problem that the intake efficiency decreases.

  The present invention has been made to solve the above-described problems, and one object of the present invention is that the fuel sprayed from the upstream injector adheres to the inner wall surface of the movable funnel, thereby dripping the fuel. It is an object of the present invention to provide a vehicle capable of suppressing a reduction in intake efficiency while suppressing the occurrence of combustion.

Means for solving the problems and effects of the device

  In order to achieve the above object, a vehicle according to one aspect of the present invention is capable of moving up and down toward an engine having an intake port, a fixed funnel for guiding air to the intake port of the engine, and an intake port of the fixed funnel. A movable funnel that is disposed and guides air together with the fixed funnel to an intake port of the engine, an air inlet including an inlet of air flowing into the movable funnel, and an inlet of the air inlet with respect to the center line of the fixed funnel; Is disposed on the opposite side, and includes a first injector that sprays fuel toward the movable funnel, and the movable funnel has a movable funnel in which at least a main stream portion of the flow of fuel spray from the first injector is in a moving trajectory that moves up and down. It is comprised so that it may not adhere to the inner wall surface.

  In the vehicle according to this aspect, as described above, the first injector as the upstream injector is disposed on the opposite side of the center line of the fixed funnel from the introduction source of the air flowing into the movable funnel. The first injector that easily causes flow resistance in the air path that flows from the air inlet to the movable funnel, such as a filter, can be disposed at a position far from the air inlet. Accordingly, it is possible to suppress an increase in the flow resistance of the air flowing into the movable funnel, and thus it is possible to suppress a reduction in intake efficiency. Further, the fuel sprayed from the first injector is configured such that at least the main flow portion of the flow of fuel spray from the first injector does not adhere to the inner wall surface of the movable funnel in the movement trajectory of moving the movable funnel up and down. Can pass through the movable funnel without causing dripping on the inner wall surface of the movable funnel. Thereby, the dripping of the fuel on the inner wall surface of the movable funnel caused by the fuel adhering to the inner wall surface of the movable funnel can be suppressed. As a result, the fuel sprayed from the first injector adheres to the inner wall surface of the movable funnel, and the fuel can be prevented from dripping and the intake efficiency can be prevented from lowering.

1 is a side view showing an overall structure of a motorcycle according to an embodiment of the present invention. FIG. 2 is a plan view of the vicinity of the funnel of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view of the vicinity of the funnel of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining a structure for attaching an air filter of the motorcycle according to the embodiment shown in FIG. 1 to a cleaner box. FIG. 2 is a perspective view showing a state where a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a separated position. FIG. 2 is a side view of the periphery of an intermediate link lever in a state where a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a separated position. FIG. 2 is a side view of the periphery of an upper link lever and a lower link lever in a state in which a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a separated position. FIG. 2 is a perspective view showing a state in which a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a contact position. FIG. 2 is a side view of the periphery of an intermediate link lever in a state where a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a contact position. FIG. 2 is a side view of the periphery of an upper link lever and a lower link lever in a state where a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is moved to a contact position. FIG. 2 is a plan view for explaining a detailed structure around a funnel of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining an attachment structure of a fixed funnel of the motorcycle according to the embodiment shown in FIG. 1 to a throttle body. FIG. 2 is a cross-sectional view for explaining an attachment structure of a fixed funnel of the motorcycle according to the embodiment shown in FIG. 1 to a throttle body. FIG. 2 is a front view of a movable funnel of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining a detailed structure of a seal member of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining a detailed structure of a seal member of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a perspective view for explaining a structure of an upper link lever and a rotation shaft of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a side view for explaining a structure around an upper link lever of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a perspective view for explaining the structure of a lower link lever and a rotating shaft of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a side view for explaining a structure around a lower link lever of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a diagram for illustrating a configuration around an ECU of the motorcycle according to the embodiment shown in FIG. 1. FIG. 3 is a diagram for explaining the relationship between the throttle opening and the engine speed of the motorcycle according to the embodiment shown in FIG. 1 and the spray of the injector. FIG. 2 is a cross-sectional view for explaining spraying of an upstream injector when the intake pipe of the motorcycle according to the embodiment shown in FIG. 1 is in a short state. FIG. 2 is a cross-sectional view for explaining a trajectory when the intake pipe of the motorcycle according to the embodiment shown in FIG. 1 is switched from a long state to a short state, and spraying of an upstream injector.

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

  FIG. 1 is a side view showing the overall structure of a motorcycle according to an embodiment of the present invention. 2 to 20 are views for explaining in detail the structure of the funnel of the motorcycle according to the embodiment shown in FIG. FIG. 21 is a diagram for illustrating a configuration around the ECU of the motorcycle according to the embodiment shown in FIG. 1. In the present embodiment, a motorcycle will be described as an example of the vehicle of the present invention. In the figure, FWD indicates the front in the traveling direction of the motorcycle. First, with reference to FIGS. 1-21, the structure of the motorcycle 1 by this embodiment is demonstrated.

  As the structure of the motorcycle 1 according to the present embodiment, as shown in FIG. 1, the front end portion of the main frame 3 is connected to the head pipe 2. As shown in FIG. 2, the main frame 3 is arranged so as to branch and extend to the left and right with respect to the front direction (arrow FWD direction) of the vehicle body. The main frame 3 is provided with an air introduction passage 4 for introducing air into a cleaner box 24 described later. Further, the main frame 3 is formed so as to extend downward in the rear side as shown in FIG. The main frame 3 is connected to a seat rail 5 that extends upward in the rear side. A handle 6 is rotatably attached to the head pipe 2. A front fork 7 is attached to the lower side of the handle 6. A front wheel 8 is rotatably attached to the lower end portion of the front fork 7.

  A front end portion of the swing arm 10 is attached to the rear end portion of the main frame 3 via a pivot shaft 9. A rear wheel 11 is rotatably attached to the rear end of the swing arm 10. A fuel tank 12 is disposed above the main frame 3, and a seat 13 is disposed above the seat rail 5. An engine 14 is mounted on the lower side of the main frame 3.

  As shown in FIG. 3, the engine 14 includes a piston 15, a cylinder 16, a cylinder head 17, and a throttle body 18. The piston 15 is slidably fitted inside the cylinder 16, and the cylinder head 17 is disposed so as to close one opening of the cylinder 16. The cylinder head 17 has an intake port 17a and an exhaust port 17b. The intake port 17 a is provided for supplying an air-fuel mixture containing air and fuel to the combustion chamber 16 a of the cylinder 16. Further, the exhaust port 17 b is provided for discharging the residual gas after combustion from the combustion chamber 16 a of the cylinder 16. An intake valve 19a and an exhaust valve 19b are disposed in the intake port 17a and the exhaust port 17b, respectively. The throttle body 18 is attached to the opening of the intake port 17a. The throttle body 18 is provided with a downstream injector 20 for injecting fuel into the intake port 17a. The downstream injector 20 is an example of the “second injector” in the present invention. An exhaust pipe 21 is attached to the opening of the exhaust port 17b, and a muffler 22 (see FIG. 1) is connected to the exhaust pipe 21. In FIG. 3, only one cylinder 16 is shown, but actually, four cylinders 16 are arranged at a predetermined interval in the width direction of the vehicle body. That is, the engine 14 of the motorcycle 1 according to the present embodiment is an in-line four-cylinder engine.

  Further, as shown in FIG. 1, a front cowl 23 including an upper cowl 23a and a lower cowl 23b is provided so as to cover the front side of the vehicle body. As shown in FIGS. 1 and 2, a cleaner box 24 to which air from the air introduction passage 4 is supplied is disposed between the main frames 3 branched to the left and right. As shown in FIG. 3, the cleaner box 24 is disposed on the intake side of the throttle body 18 of the engine 14, and includes an upper box portion 25 and a lower box portion 26. An air filter 28 for purifying air supplied from the air introduction passage 4 via the sponge member 27 is disposed in the cleaner box 24. The cleaner box 24 is an example of the “air introduction part” of the present invention, and the air filter 28 is an example of the “introduction port” of the present invention.

  As shown in FIGS. 2 and 3, the air filter 28 includes a resin main body 29, a filter element 30 (see FIG. 3), a flame extinguishing net 31, and a cover 32. As shown in FIG. 4, a convex portion 29a is integrally formed on the edge of the main body portion 29 of the air filter 28 over the entire circumference. The lower box portion 26 is integrally formed with a recess 26 a so as to correspond to the protrusion 29 a of the air filter 28. A rubber seal member 33 is disposed between the concave portion 26 a of the lower box portion 26 and the convex portion 29 a of the main body portion 29. The air filter 28 is fixed in a state of being sandwiched between the upper box portion 25 and the lower box portion 26 of the cleaner box 24. Further, as shown in FIGS. 2 and 3, the main body 29 of the air filter 28 is integrally formed with a retaining portion 29 b for preventing a screw 63 (see FIG. 2) described later from slipping upward. Has been.

  Further, as shown in FIGS. 2 and 4, a convex portion 26 b is integrally formed on the edge of the lower box portion 26 over the entire circumference. Further, as shown in FIG. 4, a concave portion 25 a into which the convex portion 26 b of the lower box portion 26 is inserted is integrally formed in the upper box portion 25. A rubber seal member 34 is disposed between the concave portion 25 a of the upper box portion 25 and the convex portion 26 b of the lower box portion 26. Further, as shown in FIG. 2, the two fixing portions 26 c at the front portion of the lower box portion 26 are fixed to the main frame 3 by connecting members 60 and 61 via a fixing bracket 35.

  In this embodiment, as shown in FIGS. 3 and 5, the cleaner box 24 (see FIG. 3) has an upstream side of the engine 14 (see FIG. 3) and an air filter 28 (see FIG. 3). A fixed funnel 36, a movable funnel 37, and a funnel moving mechanism 38 that are arranged on the downstream side (clean side) of the reference) are provided. As shown in FIGS. 2 and 3, one fixed funnel 36 and one movable funnel 37 are provided for each cylinder 16 of the engine 14. The fixed funnel 36 is fixed to the lower box portion 26 of the cleaner box 24, and has a function of guiding the purified air in the cleaner box 24 to the intake port 17a. The movable funnel 37 is disposed on the intake side (upstream side) of the fixed funnel 36, and has a function of guiding the purified air in the cleaner box 24 together with the fixed funnel 36 to the intake port 17a.

  As shown in FIGS. 5 to 10, the movable funnel 37 has an opening 37 a (see FIGS. 6 and 7) on the fixed funnel 36 side, and an opening 36 a on the intake side of the fixed funnel 36 (see FIGS. 6 and 7). And the opening 37a (see FIGS. 9 and 10) of the movable funnel 37 into the opening 36a (see FIGS. 9 and 10) of the fixed funnel 36. It is configured to be movable between the abutting position Y (a state shown in FIGS. 8 to 10) that abut against the abutting position. Moreover, the opening 37a by the side of the fixed funnel 36 of the movable funnel 37 by this embodiment is provided in the 2nd seal part 43c of the seal member 43 mentioned later. The opening 36a is an example of the “intake port” in the present invention.

  Further, as shown in FIG. 5, when the movable funnel 37 is moved to the separation position X (the state shown in FIGS. 6 and 7), the cleaner box 24 (see FIG. 3) is moved to the cylinder 16 (see FIG. 3). The intake pipe to be connected is constituted by a fixed funnel 36, a throttle body 18 (see FIG. 3), and an intake port 17a (see FIG. 3). On the other hand, as shown in FIG. 8, when the movable funnel 37 is moved to the contact position Y (the state shown in FIGS. 9 and 10), the cleaner box 24 (see FIG. 3) to the cylinder 16 (see FIG. 3). ) Is constituted by a movable funnel 37, a fixed funnel 36, a throttle body 18 (see FIG. 3), and an intake port 17a (see FIG. 3). The funnel moving mechanism 38 (an upper link lever 46 and a lower link lever 47 described later) moves between the separation position X and the contact position Y along the direction in which the movable funnel 37 guides air from the fixed funnel 36. It has a function to support it in a movable manner.

  In the present embodiment, as shown in FIG. 3, an upstream injector 39 is attached to the upper portion of the upper box portion 25 of the cleaner box 24 as shown in FIG. 4. The upstream injector 39 is provided to inject fuel from the fuel injection section 39a into the intake port 17a (see FIG. 3) together with the downstream injector 20 (see FIG. 3) in a state where the engine 14 (see FIG. 3) rotates at a high speed. It has been. This will be described later. Further, the upstream injector 39 is disposed above the movable funnel 37 so as to face the opening 36 a on the intake side of the fixed funnel 36. The upstream injector 39 is an example of the “first injector” in the present invention.

  Here, in this embodiment, as shown in FIG. 3, the upstream injector 39 is disposed on the opposite side to the air filter 28 side from which air is introduced with respect to the center line L <b> 1 of the fixed funnel 36. . Further, the center line L2 of the upstream injector 39 is disposed so as to be inclined at about 5 ° to about 10 ° toward the air filter 28 with respect to the center line L1 of the fixed funnel 36. The intersection P between the center line L1 of the fixed funnel 36 and the center line L2 of the upstream injector 39 is configured to be lower than the upper end surface of the opening 36a of the fixed funnel 36.

  In the present embodiment, as shown in FIG. 3, the upstream injector 39 is configured to spray fuel at a static spray angle of about 15 °. The spray angle (static spray angle) is an angle at which about 90% or more of the fuel injected in a static state (the state where there is no air flow) is sprayed.

  Further, as shown in FIGS. 2 and 5, the fixed funnel 36 has a structure in which two adjacent fixed funnels 36 are integrally formed via a connecting portion 36b. That is, in the present embodiment, two parts 40 in which two adjacent fixed funnels 36 are integrated are provided. Further, as shown in FIG. 11, the component 40 in which the two fixed funnels 36 are integrated is provided with three screw insertion holes 36c into which screws 62 (see FIG. 12) are inserted. As shown in FIG. 12, the fixed funnel 36 (component 40) is attached to the throttle body 18 together with the cleaner box 24 (lower box portion 26) by means of screws 62 inserted into the screw insertion holes 36c. The screw 62 is also provided with a screw insertion hole 36c into which the screw 62 is inserted in the lower box portion 26 of the cleaner box 24. An engaging portion 36d is provided on the inner side surface of the screw insertion hole 36c of the fixed funnel 36 (component 40). Accordingly, as shown in FIG. 13, the head 62a of the screw 62 can be engaged with the engaging portion 36d even before the screw 62 is attached to the throttle body 18, so that the screw 62 is screwed. It is possible to suppress the upper hole from being removed from the insertion hole 36c.

  Moreover, as shown in FIG. 5, the support | pillar 36e is integrally provided in the component 40 with which the two fixed funnels 36 were integrated, respectively. As shown in FIG. 11, the support pillars 36e are formed with rotating shaft support holes 36f for rotatably supporting the ends of the rotating shaft 44 described later. Further, a rotation shaft support hole 36g for rotatably supporting an end portion of a rotation shaft 45 described later is formed below the rotation shaft support hole 36f of the column 36e.

  Further, as shown in FIG. 5, fixing holes 36 h are respectively provided in the pillars 36 e of the two components 40. Further, as shown in FIG. 11, the fixing holes 36 h of the pillars 36 e of the two parts 40 are screwed to the lower box portion 26 (see FIG. 2) by screws 63. In addition, at the front portions of the two support columns 36e, as shown in FIG. 5, the opening 37a on the fixed funnel 36 side of the movable funnel 37 is separated from the opening 36a on the intake side of the fixed funnel 36, respectively. A restricting portion 36i (see FIGS. 7 and 10) with which a stopper 47c, which will be described later, abuts when it is located in X (state of FIG. 5) is provided. As shown in FIGS. 7 and 10, the restricting portions 36 i are each formed in a concave shape from the front portion of the support column 36 e toward the rear side.

  Further, as shown in FIGS. 2 and 5, the suction side opening 36 a of the fixed funnel 36 is formed so as to spread outward in the radial direction of the fixed funnel 36 as viewed from the direction of air introduction. A portion 36j is formed. The suction portions 36j of the fixed funnels 36 are each formed in an annular shape along the opening 36a and a convex shape protruding upward. Accordingly, the opening 37a (see FIGS. 6 and 7) on the fixed funnel 36 side of the movable funnel 37 is separated from the opening 36a (see FIGS. 6 and 7) on the intake side of the fixed funnel 36. In the case shown in FIG. 5, it is possible to allow air to flow into the fixed funnel 36 along the suction portion 36j.

  Further, as shown in FIGS. 11 and 14, the movable funnel 37 has a structure in which two adjacent movable funnels 37 are integrally formed via a pair of upper and lower support shafts 37b and 37c (see FIG. 14). . That is, in the present embodiment, two parts 41 in which two adjacent movable funnels 37 are integrated are included. Further, the pair of support shafts 37 b and 37 c are disposed between the two movable funnels 37 of the component 41. The pair of upper and lower support shafts 37b and 37c are configured to rotatably support a fitting portion 46a of an upper link lever 46 and a fitting portion 47a of a lower link lever 47, which will be described later. Each of the support shafts 37b and 37c has a small diameter portion 37d as shown in FIG.

  Further, as shown in FIG. 7, a split bush 42a is attached to each of the small diameter portions 37d of the support shafts 37b and 37c of the movable funnel 37 (component 41). The split bush 42a has a function of smoothly rotating an upper link lever 46, which will be described later, with respect to the support shaft 37b, and a function of smoothly rotating the lower link lever 47 with respect to the support shaft 37c. Further, as shown in FIGS. 9 and 11, the split bush 42b is attached to a small-diameter portion 37f of the support shaft 37e located between the components 41 in which the two movable funnels 37 are integrated. Note that only one split bush 42b positioned between the parts 41 in which the two movable funnels 37 are integrated is mounted so as to straddle the small diameter portion 37f of the two support shafts 37e.

  Further, as shown in FIG. 11, each opening 37g on the intake side of the movable funnel 37 has a suction portion 37h formed so as to spread outward in the radial direction of the movable funnel 37 when viewed from the direction in which air is guided. Is formed. The suction portions 37h of the movable funnels 37 are each formed in a convex shape protruding upward. Further, the end of each suction portion 37h in the vehicle width direction is formed in a straight line along the traveling direction (arrow FWD direction). Further, the upper part of the screw insertion hole 36c on the opposite side to the traveling direction (arrow FWD direction) of each suction portion 37h is formed in a notch shape that makes it easy to place the screw 62 in the screw insertion hole 36c of the fixed funnel 36. Has been.

  As shown in FIGS. 5 and 8, a rubber seal member 43 is attached to the lower end portion of each movable funnel 37 on the fixed funnel 36 side. As shown in FIG. 14, the seal member 43 is provided with four engagement holes 43a, and the four projections 37i of the movable funnel 37 are engaged with the engagement holes 43a. As a result, it is possible to suppress the seal member 43 from dropping downward from the lower end portion of the movable funnel 37. Further, as shown in FIG. 15, the seal member 43 is formed with a first seal portion 43 b that extends laterally and a second seal portion 43 c that extends downward. Then, when the movable funnel 37 moves from the separation position X (state of FIG. 15) to the contact position Y (state of FIG. 16), the first seal portion 43b contacts the fixed funnel 36 and The gap between the fixed funnel 36 and the first seal portion 43b are elastically deformed upward, so that the second seal portion 43c also contacts the fixed funnel 36 and closes the gap between the movable funnel 37 and the fixed funnel 36. It is configured. That is, the seal member 43 is configured to have a double seal structure. As described above, the opening 37 a on the intake side of the fixed funnel 36 of the movable funnel 37 according to the present embodiment is provided in the second seal portion 43 c of the seal member 43.

  In the present embodiment, as shown in FIGS. 7 and 10, the funnel moving mechanism 38 uses the upper link lever 46 and the lower link lever 47 described later to replace the movable funnel 37 with the air of the fixed funnel 36. It is supported so as to be movable along the direction of guiding. Specifically, the upper link lever 46 and the lower link lever 47 move the movable funnel 37 between the separation position X (the state shown in FIGS. 6 and 7) and the contact position Y (the state shown in FIGS. 9 and 10). It is configured to be movable between.

  As a specific structure of the funnel moving mechanism section 38, as shown in FIGS. 5 and 11, the rotation shaft support hole 36f on the upper side of the support 36e provided in the fixed funnel 36 (component 40) (see FIG. 11). In addition, the end of the rotation shaft 44 is rotatably supported. Further, the end of the rotation shaft 45 is rotatably supported in the rotation shaft support hole 36g (see FIG. 11) on the lower side of the column 36e. Further, as shown in FIG. 11, a stepped portion 44a is provided at one end and the other end of the rotating shaft 44, and the stepped portion 44a is formed in the rotating shaft support hole 36f on the upper side of the column 36e. The opening end is in contact with a bush (not shown). Further, a step 45a is provided at one and the other end of the rotation shaft 45, and the step 45a is not shown at the opening end of the rotation shaft support hole 36g below the support column 36e. It abuts through the bush. For this reason, the rotation shaft 44 and the rotation shaft 45 are restricted from moving in the axial direction.

  Further, in the present embodiment, the upper rotation shaft 44 is disposed at a position farther from the central axis of the movable funnel 37 than the lower rotation shaft 45 when viewed from the direction of air introduction. That is, the upper rotation shaft 44 is disposed on the traveling direction (arrow FWD direction) side with respect to the lower rotation shaft 45. Further, as shown in FIG. 10, when the movable funnel 37 is located at the contact position Y, the rotation shaft 44 is based on the end surface of the opening 37g (suction portion 37h) on the intake side of the movable funnel 37. It is arranged on the upper side (the side opposite to the side on which the fixed funnel 36 is arranged). That is, the rotation shaft 44 is configured to be above the upper end of the movable funnel 37 when the movable funnel 37 is located at the contact position Y.

  Further, as shown in FIG. 11, the upper link lever 46 made of resin is attached to one and the other end side of the upper rotation shaft 44 so as to rotate together with the upper rotation shaft 44. ing. Specifically, a knurling process is applied to a portion (a portion corresponding to a rotation shaft insertion hole 46b described later) to which the upper link lever 46 of the upper rotation shaft 44 is attached. 44 and the upper link lever 46 are integrally formed. A resin-made lower link lever 47 is attached to one and the other end of the lower rotation shaft 45 so as to rotate together with the lower rotation shaft 45. Also, the lower rotation shaft 45 and the lower link lever 47 are integrally formed in the same manner as the upper rotation shaft 44 and the upper link lever 46. The upper link lever 46 is an example of the “first arm” in the present invention, and the lower link lever 47 is an example of the “second arm” in the present invention.

  In the present embodiment, the upper link lever 46 and the lower link lever 47 are configured to have different turning radii R1 and R2, respectively, as shown in FIG.

  Specifically, as shown in FIGS. 10 and 17, the upper link lever 46 has a fitting portion 46a and a rotation shaft insertion hole 46b. As shown in FIGS. 10 and 18, the upper support shaft 37b (small diameter portion 37d) of the movable funnel 37 is fitted into the fitting portion 46a of the upper link lever 46 via the split bush 42a. Further, the upper link lever 46 is configured to rotate with the rotation shaft insertion hole 46b as a fulcrum in the same direction as the rotation shaft 44 rotates as the rotation shaft 44 rotates. Has been. That is, as shown in FIG. 18, the upper link lever 46 is configured such that the distance between the center of the fitting portion 46a and the center of the rotation shaft insertion hole 46b is the rotation radius R1.

  Further, as shown in FIGS. 10 and 19, the lower link lever 47 includes a fitting portion 47a, a rotation shaft insertion hole 47b, and two stoppers 47c and 47d. As shown in FIGS. 10 and 20, a lower support shaft 37c (small diameter portion 37d) of the movable funnel 37 is fitted into the fitting portion 47a of the lower link lever 47 via the split bush 42a. . Further, the lower link lever 47 rotates with the rotation shaft insertion hole 47b as a fulcrum in the same direction as the rotation shaft 45 rotates as the rotation shaft 45 rotates. It is configured. That is, as shown in FIG. 20, the lower link lever 47 is configured such that the distance between the center of the fitting portion 47a and the center of the rotation shaft insertion hole 47b is the rotation radius R2.

  Further, the turning radius R1, which is the distance between the center of the fitting portion 46a of the upper link lever 46 and the center of the turning shaft insertion hole 46b, is fitted into the lower link lever 47 as shown in FIG. It is configured to be larger than the turning radius R2, which is the distance between the center of the portion 47a and the center of the turning shaft insertion hole 47b. By configuring as described above, even when the rotation shaft 44 of the upper link lever 46 is disposed closer to the traveling direction than the rotation shaft 45 of the lower link lever 47 as in the present embodiment, The opening 37a of the movable funnel 37 that has been moved to the contact position Y and the opening 37a of the movable funnel 37 that has been moved to the separation position X are adjusted so that they are substantially at the same position when viewed from the direction in which air is introduced. It becomes possible.

  The upper link lever 46 is formed to bend downward (in the direction in which the fixed funnel 36 is disposed) as viewed from the direction in which the rotation shaft 44 provided on the upper link lever 46 extends. A portion of the upper link lever 46 in the vicinity of the fitting portion 46a is disposed below the intake side opening 37g (suction portion 37h) of the movable funnel 37 (on the side where the fixed funnel 36 is disposed). . Further, as shown in FIG. 11, the upper link lever 46 and the lower link lever 47 include an overlap portion Z where a part of the suction portion 37h of the movable funnel 37 overlaps when viewed from the direction in which air is guided. Yes. Accordingly, the movable funnel 37 having the suction portion 37h can be disposed in a portion where the upper link lever 46 and the lower link lever 47 are disposed in a small space when viewed from the direction of guiding air. As a result, the space for arranging the movable funnel 37 can be used effectively.

  Further, the upper link lever 46 and the lower link lever 47 are respectively an upper portion (predetermined portion) of the two screw insertion holes 36c on the traveling direction (arrow FWD direction) side of the fixed funnel 36 as viewed from the direction in which air is guided. ) Is bent to avoid. Accordingly, when the fixed funnel 36 is fixed to the cleaner box 24 (lower box portion 26) by using the screws 62, the screws 62 are inserted into the two screw insertion holes 36c on the traveling direction (arrow FWD direction) side. It becomes possible to make it easy to arrange.

  In the present embodiment, as shown in FIG. 7, the stopper 47c of the lower link lever 47 is moved when the lower link lever 47 is rotated by a predetermined amount in the E direction (the movable funnel 37 has reached the separation position X). In this case, the lower link lever 47 has a function of regulating the rotation in the E direction by contacting the regulating portion 36i of the support 36e of the fixed funnel 36. Further, the stopper 47c is configured to be housed inside the concave regulating portion 36i when the movable funnel 37 reaches the separation position X. Further, as shown in FIG. 10, the stopper 47 d is a post 36 e of the fixed funnel 36 when the lower link lever 47 rotates by a predetermined amount in the F direction (when the movable funnel 37 reaches the contact position Y). It has a function of restricting the rotation of the lower link lever 47 in the F direction by contacting the rear portion. The stopper 47d is configured to abut against the rear portion of the support post 36e when the elastic force of the rubber seal member 43 is reduced, and when the elastic force of the seal member 43 is not reduced. The stopper 47d does not contact the support post 36e.

  Further, the stoppers 47c and 47d of the lower link lever 47 are configured to protrude downward (the side opposite to the side where the upper link lever 46 is disposed). As a result, the distance between the upper link lever 46 and the lower link lever 47 can be reduced. As a result, even when the vertical length of the movable funnel 37 is small, the upper link lever 46 and the lower link lever 47 can be attached to the movable funnel 37 without contacting each other. Further, as shown in FIG. 19, the stoppers 47c and 47d of the lower link lever 47 are configured to protrude outward in the vehicle width direction.

  As shown in FIGS. 5 and 8, the lower rotation shaft 45 is provided with a support portion 48 that rotates together with the rotation shaft 45. The support portion 48 includes a pair of holding pieces 48b each having a notch 48a (see FIG. 8).

  Further, as shown in FIGS. 6 and 9, the intermediate link lever 49 rotates on the split bush 42b mounted on the support shaft 37e (small diameter portion 37f) located between the components 41 (see FIG. 11). It is attached as possible. Specifically, a fitting portion 49 a that can be engaged with the split bush 42 b is formed on one side of the intermediate link lever 49. And the fitting part 49a is engaged with the split bush 42b so that rotation is possible. Similarly to the upper link lever 46 and the lower link lever 47, the intermediate link lever 49 is integrally formed with the upper rotation shaft 44. That is, the rotation shaft 44 is attached to the rotation shaft insertion hole 49 b so that the intermediate link lever 49 rotates together with the upper rotation shaft 44.

  By configuring the support part 48, the upper link lever 46 and the lower link lever 47 as described above, the support part 48 (see FIG. 6) is rotated in the E direction as shown in FIGS. Accordingly, when the lower link lever 47 (see FIG. 7) is rotated in the E direction, the movable funnel 37 is moved away from the fixed funnel 36. As shown in FIGS. 9 and 10, when the lower link lever 47 (see FIG. 10) is rotated in the F direction by rotating the support portion 48 (see FIG. 9) in the F direction, The movable funnel 37 is moved in a direction approaching the fixed funnel 36. Here, as shown in FIGS. 7 and 10, the amount of rotation of the upper link lever 46 and the lower link lever 47 is that of the movable funnel 37 on the opening 36 a side of the movable funnel 37 in the separated position X (state of FIG. 7). The position of the opening surface and the position of the opening surface on the opening 36a side of the fixed funnel 36 of the movable funnel 37 at the contact position Y (state of FIG. 10) are the same as viewed from the opening direction of the fixed funnel 36. It has been adjusted. Thus, when the engine 14 rotates at high speed, even if the opening 37 a of the movable funnel 37 is separated from the opening 36 a of the fixed funnel 36, the air sucked by the fixed funnel 36 through the movable funnel 37. It is possible to make the flow of air straight, and thus it is possible to suppress an increase in air flow resistance. As a result, when the engine 14 rotates at a high speed (when the movable funnel 37 is separated from the fixed funnel 36), it is possible to suppress a reduction in intake efficiency.

  Further, as shown in FIG. 11, the upper link lever 46 and the lower link lever 47 (see FIG. 5) are driven by the driving force of the movable funnel driving motor 50 arranged outside the cleaner box 24 (see FIG. 3). It is configured to rotate. Specifically, the movable funnel driving motor 50 is disposed on the rear side of the movable funnel 37 along the traveling direction of the vehicle (the arrow FWD direction). Further, as shown in FIG. 6, one end portion of the rotation lever 51 is attached to the output shaft 50 a of the movable funnel driving motor 50. At the other end of the rotating lever 51, a clamping part 51a formed in a notch shape is provided.

  As shown in FIG. 3, the rotating lever 51 is disposed inside the lower box portion 26 (projecting portion 26 d) through the opening 26 e of the projecting portion 26 d of the lower box portion 26 of the cleaner box 24. . And as shown in FIG. 6, the protrusion part 52a provided in the both sides | surfaces of the moving member 52 is attached to the clamping part 51a of the rotation lever 51 so that rocking | fluctuation with respect to the clamping part 51a is possible.

  Further, as shown in FIG. 21, an ECU (Engine Control Unit) 70 controls the driving of the movable funnel driving motor 50 and the fuel spray amount of the upstream injector 39 and the downstream injector 20. The ECU 70 is an example of the “control unit” in the present invention. Further, the throttle motor 71 is driven to rotate by the control of the ECU 70, whereby the throttle valve 72 is opened and closed. The opening degree of the throttle valve 72 (throttle opening degree) is detected by the throttle position sensor 73. As shown in FIG. 3, the throttle valve 72 is disposed in the throttle body 18 and is provided to adjust the inflow amount of the mixture of fuel and air that flows into the engine 14. The throttle motor 71 is an example of the “throttle opening / closing part” of the present invention. Further, the rotational speed of the engine 14 is detected by a crank angle sensor 74 that detects the rotational speed of a crank (not shown).

  In the present embodiment, the ECU 70 drives the movable funnel drive motor 50 based on the rotational speed of the engine 14 detected by the crank angle sensor 74 and the throttle opening detected by the throttle position sensor 73. The fuel spray amount of the upstream injector 39 and the downstream injector 20 is controlled. This point will be described later.

  FIG. 22 is a diagram for explaining the switching operation of the intake pipe length and the fuel injection ratios of the upstream injector and the downstream injector corresponding to changes in the engine speed and the throttle opening. FIGS. 23 and 24 are views for explaining fuel spraying to the intake pipe of the upstream injector. Next, referring to FIGS. 3, 6, 7, 9, 10, and 21 to 24, the operation of switching the length of the intake pipe and the fuel spraying of the upstream injector 39 and the downstream injector 20 are described. explain.

  First, as shown in FIG. 22, regardless of the throttle opening, when the rotational speed of the engine 14 (see FIG. 3) exceeds about 6000 rpm, fuel spraying of the upstream injector 39 (see FIG. 23) is started. The fuel injection amount ratio of the upstream injector 39 to the downstream injector 20 (see FIG. 23) increases as the rotational speed of the engine 14 increases.

  Further, when the throttle opening is less than 60 °, or when the rotational speed of the engine 14 (see FIG. 3) is about 13500 rpm (first rotational speed N1) or less, the intake pipe includes the movable funnel 37 and the fixed funnel 36. Since the movable funnel 37 is arranged at the abutting position X and is composed of the throttle body 18 and the intake port 17a, a long state in which the intake pipe length of the movable funnel 37 is long is maintained. As shown in FIG. 3, when the intake pipe is in the long state, the center line of the movable funnel 37 and the center line L1 of the fixed funnel 36 are configured to coincide with each other.

  Here, in this embodiment, as shown in FIG. 22, the throttle opening is 60 ° or more, and the rotational speed of the engine 14 (see FIG. 3) is about 10,000 rpm (second rotational speed N2) or more and about 12000 rpm ( Within the range of the third rotation speed N3) or less, the upstream injector injection ratio, which is the ratio of the injection amount of the upstream injector 39 (see FIG. 3) to the injection amount of the downstream injector 20 (see FIG. 3), is greater than 0.5. Thus, the amount of fuel sprayed by the upstream injector 39 is configured to be larger than the amount of fuel sprayed by the downstream injector 20. Further, fuel injection by the upstream injector 39 is performed when the throttle opening is not less than 45 ° and the engine 14 has a rotational speed of about 10,000 rpm (second rotational speed N2) or more and about 12000 rpm (third rotational speed N3). The ratio becomes maximum with respect to the fuel injection of the downstream injector 20, and this state is maintained.

  Further, when the throttle opening is 60 ° or more and the rotational speed of the engine 14 reaches about 13500 rpm (first rotational speed N1), the movable funnel driving motor 50 (see FIG. 9) drives the movable funnel. 37 moves upward. In this state, the intake pipe is composed of the fixed funnel 36, the throttle body 18 and the intake port 17a, and is configured so that the intake pipe length is short because the movable funnel 37 is not included. Further, the upstream injector 39 is configured to spray fuel also when the movable funnel 37 moves upward and the intake pipe is switched from the long state to the short state.

  Here, the details of the switching operation of the intake pipe will be described. First, as described above, when the engine 14 shown in FIG. 3 rotates at about 13500 rpm (first rotation speed N1) or more and the throttle opening is 60 ° or more, the inertia effect and pulsation effect of intake air Is optimally obtained, the intake pipe is short-circuited as shown in FIG. That is, when the engine 14 rotates at about 13500 rpm (first rotation speed N1) or more and the throttle opening is 60 ° or more, the movable funnel 37 is moved to the separation position X. Note that the inertial effect and pulsation effect of intake are that the intake pipe pressure fluctuations determined by the effective length of the intake pipe, the effective diameter of the intake pipe, and the effective opening and closing time of the intake valve effectively act on the opening and closing timing of the intake valve. This increases the intake air charging efficiency of the engine.

  Specifically, as shown in FIG. 6, first, the movable member 52 is moved in the H direction by rotating the rotating lever 51 in the G direction by the movable funnel driving motor 50 of the funnel moving mechanism 38. . As a result, the moving shaft 53 moves in the H direction, so that the lower link lever 47 (see FIG. 7) rotates in the E direction. Thereafter, as shown in FIG. 7, the lower link lever 47 is continuously rotated in the E direction until the stopper 47c of the lower link lever 47 comes into contact with the restricting portion 36i of the column 36e.

  As a result, the movable funnel 37 is moved to the separation position X. As a result, when the engine 14 (see FIG. 3) rotates at about 13500 rpm (first rotation speed N1) or more and the throttle opening is 60 ° or more, the fixed funnel 36 and the throttle body 18 (see FIG. 3). Since the intake pipe is configured by the intake port 17a (see FIG. 3), the intake pipe is short-circuited. Here, when the engine 14 shown in FIG. 3 rotates at about 13500 rpm (first rotation speed N1) or more and the throttle opening is 60 ° or more, the intake pipe is short-circuited, thereby The pressure fluctuation period due to the inertia effect and the pulsation effect is advanced, and the intake valve 19a that opens and closes at high speed is synchronized. Thereby, the intake charge efficiency at the time of high speed rotation is improved.

  Next, when the rotational speed of the engine 14 shown in FIG. 3 is less than about 13500 rpm (first rotational speed N1), or when the throttle opening is 60 ° or less, the inertial effect and pulsation effect of intake air are appropriately obtained. Therefore, the intake pipe is set to a long state. That is, when the rotational speed of the engine 14 is less than about 13500 rpm (first rotational speed N1) or when the throttle opening is 60 ° or less, the movable funnel 37 is moved to the contact position Y.

  Specifically, first, as shown in FIG. 9, the moving member 52 is moved in the J direction by rotating the rotating lever 51 in the I direction by the movable funnel driving motor 50 of the funnel moving mechanism unit 38. . Thereby, since the moving shaft 53 moves in the J direction, the lower link lever 47 (see FIG. 10) rotates in the F direction. Thereafter, as shown in FIG. 10, the lower link lever 47 is continuously rotated in the F direction until the stopper 47d of the lower link lever 47 contacts the support column 36e.

  As a result, the movable funnel 37 is moved to the contact position Y. As a result, when the engine 14 (see FIG. 3) rotates at a low speed, the movable funnel 37, the fixed funnel 36, the throttle body 18 (see FIG. 3), and the intake port 17a (see FIG. 3) take in the air. Since the pipe is constructed, the intake pipe is in a long state. Here, when the engine 14 shown in FIG. 3 rotates at a low speed, the intake pipe 19a that opens and closes at a low speed is provided by extending the pressure fluctuation period due to the inertia effect and pulsation effect of the intake air by setting the intake pipe to a long state. Synchronize. Thereby, the intake efficiency at the time of low speed rotation improves.

  Next, fuel spraying of the upstream injector 39 will be described with reference to FIGS. 23 and 24.

  First, as shown in FIG. 23, the upstream injector 39 is located at the intersection P between the center line L1 of the fixed funnel 36 and the center line L2 of the upstream injector 39, which is located below the upper end surface of the opening 36a of the fixed funnel 36. The fuel is sprayed at a static spray angle of about 15 °. At this time, the fuel from the upstream injector 39 is sprayed so as not to adhere to the inner wall surface of the movable funnel 37 and the inner wall surface of the fixed funnel 36 within a static spray angle (about 15 °).

  Here, in the present embodiment, when the engine 14 rotates at about 13500 rpm (first rotation speed N1) or more and the throttle opening is 60 ° or more, the movable funnel 37 follows a locus as shown in FIG. Move upward. Specifically, since the upper link lever 46 and the lower link lever 47 have different turning radii due to different lengths, when the movable funnel 37 moves upward, the opposite side of the traveling direction. Move while drawing a slightly puffy trajectory. In this case, when the movable funnel 37 reaches the separation position X, the center line of the movable funnel 37 coincides with the center line L1 of the fixed funnel 36 as in the case where the movable funnel 37 is disposed at the contact position Y. It is configured as follows. In the movement trajectory of the movable funnel 37, the fuel sprayed at the static spray angle (about 15 °) of the upstream injector 39 is always sprayed so as not to adhere to the inner wall surface of the movable funnel 37, as shown in FIG. Is done.

  Further, when the movable funnel 37 moves upward and the intake pipe is short-circuited, as shown in FIG. 23, the fuel sprayed at the static spray angle (about 15 °) of the upstream injector 39 is the movable funnel. It sprays so that it may not adhere to the inner wall face of 37.

  In the present embodiment, as described above, by arranging the upstream injector 39 on the opposite side to the air filter 28 side that is the introduction source of the air flowing into the movable funnel 37 with respect to the center line L1 of the fixed funnel 36, An upstream injector 39 that easily generates flow resistance in the air path flowing from the air filter 28 into the movable funnel 37 can be disposed at a position far from the air filter 28 from which air is introduced. Thereby, since it is possible to suppress an increase in the flow resistance of the air flowing into the movable funnel 37, it is possible to suppress a reduction in intake efficiency. In addition, at least the main flow portion of the flow of fuel spray from the upstream injector 39 does not adhere to the inner wall surface of the movable funnel 37 in the movement trajectory of moving the movable funnel 37 up and down, so that the spray is sprayed from the upstream injector 39. The fuel can be passed through the movable funnel 37 without causing dripping on the inner wall surface of the movable funnel 37. Thereby, the dripping of the fuel on the inner wall surface of the movable funnel 37 caused by the fuel adhering to the inner wall surface of the movable funnel 37 can be suppressed. As a result, the fuel sprayed from the upstream injector 39 adheres to the inner wall surface of the movable funnel 37, thereby preventing the fuel from dripping and suppressing the reduction of the intake efficiency.

  In the present embodiment, at least the main flow portion of the fuel spray from the upstream injector 39 is attached to the inner wall surface of the movable funnel 37 by configuring it so as to be within the range of the movement trajectory of the inner space of the movable funnel 37. The dripping of the fuel by this can be suppressed.

  Further, in the present embodiment, by configuring the center line L2 of the upstream injector 39 within the range of the movement trajectory of the internal space of the movable funnel 37, at least the mainstream portion of the fuel spray from the upstream injector 39 is provided. Can be easily configured to be within the range of the movement trajectory of the internal space of the movable funnel 39.

  Further, in the present embodiment, as described above, the upstream injector 39 is disposed on the side opposite to the air filter 28 from which the center line L2 of the upstream injector 39 is the air introduction source with respect to the center line L1 of the fixed funnel 36. The fuel sprayed from the upstream injector 39 toward the movable funnel 37 while the upstream injector 39 is disposed rearward by being arranged so as to incline from 5 ° to about 10 ° has a static spray angle (about 15 °). It can be configured not to adhere to the inner wall surface of the movable funnel 37.

  Further, in the present embodiment, as described above, the upstream injector 39 is set at the intersection P between the center line L1 of the fixed funnel 36 located below the upper end surface of the opening 36a of the fixed funnel 36 and the center line L2 of the upstream injector 39. The fuel is not easily attached to the inner wall surface of the fixed funnel 36 and the inner wall surface of the movable funnel 37 within the static spray angle of the fuel from the upstream injector 39. It can be constituted as follows.

  In the present embodiment, as described above, the upstream injector 39 is configured to spray the fuel at a static spray angle of about 15 °, and is sprayed by the upstream injector 39 at a static spray angle of about 15 °. The fuel is not attached to the inner wall surface of the movable funnel 37 within the movement trajectory of the movable funnel 37, so that at least a static spray angle of about 15 °, which becomes the mainstream portion of the fuel from the upstream injector 39, is obtained. Can be configured not to always adhere to the inner wall surface of the movable funnel 37.

  Further, in the present embodiment, as described above, the fuel sprayed by the upstream injector 39 at a static spray angle of about 15 ° does not adhere to the inner wall surface of the fixed funnel 36, so that only the movable funnel 37 is provided. In addition, even on the inner wall surface of the fixed funnel 36, it is possible to suppress the fuel from adhering at least within a static spray angle of about 15 °, which is the main flow portion of the fuel from the upstream injector 39.

  In the present embodiment, as described above, the upper link lever 46 and the lower link lever 47 are configured to rotate at different rotation radii, and the movable funnel 37 is connected to the center line of the movable funnel 37. Is configured so as to coincide with the center line L1 of the fixed funnel 36 before and after the movement, so that the flow of the air taken in by the fixed funnel 36 through the movable funnel 37 can be easily made linear. Therefore, an increase in air flow resistance can be easily suppressed.

  Further, in the present embodiment, the downstream injector 20 that is disposed below the fixed funnel 36 and sprays fuel toward the intake port 17a, and the inflow amount of the mixture of fuel and air that flows into the engine 14 are adjusted. A throttle valve 72; a throttle motor 71 that opens and closes the throttle valve 72; an upstream injector 39 based on the rotational speed of the engine 14 and the throttle opening detected from the opening of the throttle valve 72 opened and closed by the throttle motor 71; By further comprising an ECU 70 that adjusts the proportion of fuel sprayed by the downstream injector 20, the upstream injector 39 and the downstream injector 20 can be easily used according to the rotational speed of the engine 14 and the throttle opening. The fuel injection amount can be adjusted.

  In the present embodiment, as described above, the ECU 70 controls the movable funnel 37 when the rotational speed of the engine 14 is about 13500 rpm (first rotational speed N1) or more and the throttle opening is 60 degrees or more. It is configured to control to move upward and switch to the short state, and when the movable funnel 37 is switched to the short state, the fuel spray amount of the upstream injector 39 is higher than the fuel spray amount of the downstream injector 20. By controlling so that the amount of the fuel is reduced, the influence of fuel spraying by the upstream injector 39 when the flow of air from the air filter 28 is disturbed when the movable funnel 37 moves upward is affected. Can be reduced. Thereby, even when the movable funnel 37 moves upward, it is possible to prevent the spray of fuel from the upstream injector 39 from being disturbed, so that the fuel from the upstream injector 39 adheres to the inner wall surface of the movable funnel 37. Can be suppressed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the utility model registration request, and further includes all modifications within the meaning and scope equivalent to the scope of the utility model registration request.

  For example, in the above-described embodiment, an example in which the present invention is applied to a motorcycle has been shown. However, the present invention is not limited to this, and can be applied to a vehicle other than a motorcycle.

  In the above embodiment, the present invention is applied to a vehicle equipped with a 4-cylinder engine. However, the present invention is not limited to this, and a vehicle equipped with a multi-cylinder engine other than 4 cylinders or a single-cylinder engine. It can also be applied to a vehicle equipped with an engine.

  In the above embodiment, the example in which the center line of the upstream injector and the center line of the fixed funnel are inclined to about 5 ° to about 10 ° opposite to the air filter side is shown. Without being limited to the inner wall surfaces of the movable funnel and the fixed funnel, the mainstream portion of the fuel from the upstream injector may be inclined at an angle of less than 5 ° or an angle of greater than 10 °. Good.

  In the above embodiment, the example in which the static spray angle of the fuel in the upstream injector is about 15 ° is shown. However, the present invention is not limited to this, and the fuel from the upstream injector has a static spray angle of about 15 °. On the inner side, the static spray angle may be configured to be larger than 15 ° as long as it does not adhere to the inner wall surfaces of the movable funnel and the fixed funnel. If comprised in this way, since atomization of a fuel is accelerated | stimulated, air and the sprayed fuel can be mixed more efficiently.

  In the above embodiment, an example in which the upper link lever and the lower link lever are configured so that the length of the upper link lever is larger than the length of the lower link lever is shown. However, the length of the lower link lever may be greater than the length of the upper link lever.

1 Motorcycle (vehicle)
14 Engine 17a Intake port 20 Downstream injector (second injector)
24 Cleaner box (air introduction part)
28 Air filter (inlet)
36 fixed funnel 36a opening 37 movable funnel 39 upstream injector (first injector)
46 Upper link lever (first arm)
47 Lower link lever (second arm)
70 ECU (control unit)
71 Throttle motor (throttle opening / closing part)
72 Throttle valve L1 Center line L2 Center line P Intersection N1 1st rotation speed N2 2nd rotation speed N3 3rd rotation speed

Claims (12)

An engine having an intake port;
A fixed funnel for directing air to the intake port of the engine;
A movable funnel that is arranged to move up and down toward the intake port of the fixed funnel and guides air to the intake port of the engine together with the fixed funnel;
An air inlet including an inlet for air flowing into the movable funnel;
A first injector that is disposed on the side opposite to the inlet of the air introduction portion with respect to the center line of the fixed funnel and sprays fuel toward the movable funnel;
The movable funnel is a vehicle configured such that at least a main flow portion of a flow of fuel spray from the first injector does not adhere to an inner wall surface of the movable funnel in a movement trajectory that moves up and down.   2. The vehicle according to claim 1, wherein at least a mainstream portion of the fuel spray from the first injector is configured to be within a range of a movement locus of an internal space of the movable funnel.   The vehicle according to claim 1, wherein a center line of the first injector is configured to be disposed within a range of a movement locus of an internal space of the movable funnel.   2. The first injector according to claim 1, wherein the first injector is arranged such that a center line of the first injector is inclined at a predetermined angle to a side opposite to the air inlet with respect to a center line of the fixed funnel. Vehicle.   The first injector is configured to spray fuel toward an intersection of a center line of the fixed funnel and a center line of the first injector located below an upper end surface of the fixed funnel on the intake port side. The vehicle according to claim 4.   The first injector is configured to spray fuel at a predetermined spray angle, and the fuel sprayed at the predetermined spray angle by the first injector is at least within the movement trajectory of the movable funnel. The vehicle according to claim 1, wherein the vehicle is configured not to adhere to an inner wall surface of the movable funnel.   The vehicle according to claim 6, wherein the first injector is configured so that fuel sprayed at the predetermined spray angle by the first injector does not adhere to an inner wall surface of the fixed funnel. An arm member further supporting the movable funnel so as to be movable up and down;
The arm member includes a first arm and a second arm configured to be rotatable,
The movable funnel is configured such that the fuel sprayed from the first injector is moved by the first arm and the second arm along a trajectory that does not adhere to an inner wall surface of the movable funnel. Item 4. The vehicle according to Item 1.   The first arm and the second arm of the arm member are configured to rotate with different rotation radii, and the movable funnel is configured so that the center line of the movable funnel is before and after the movement. The vehicle according to claim 8, wherein the vehicle is configured to coincide with a center line of a fixed funnel. A second injector disposed below the fixed funnel and spraying fuel toward the intake port;
A throttle valve for adjusting an inflow amount of a mixture of fuel and air flowing into the engine;
A throttle opening and closing part for opening and closing the throttle valve;
And a controller that adjusts a ratio of fuel sprayed by the first injector and the second injector based on a rotational speed of the engine and a throttle opening degree of the throttle valve opened and closed by the throttle opening and closing unit. The vehicle according to claim 1.   The control unit moves the movable funnel upward to switch to a short state with a short intake pipe length when the engine is at a first rotational speed or more and the throttle opening is at a predetermined angle or more. When the movable funnel is switched to a short state with a short intake pipe length, the fuel spray amount of the first injector is more than the fuel spray amount of the second injector. The vehicle according to claim 10, wherein the vehicle is configured to be controlled so as to be reduced.   When the throttle opening is equal to or greater than a predetermined angle and the engine speed is equal to or greater than the second speed and equal to or less than the third speed, the control unit is more than the fuel spray amount of the second injector. The vehicle according to claim 11, wherein the vehicle is configured to control so that a spray amount of the first injector is increased.

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