JP4786573B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle, and more particularly, to a vehicle including an exhaust control valve attached to an exhaust pipe.

  Conventionally, a vehicle including an exhaust control valve attached to an exhaust pipe is known (see, for example, Patent Document 1). In Patent Document 1, two switching valves (exhaust control valves) respectively attached to two exhaust pipes arranged on both sides in the width direction of the vehicle body, and an actuator (motor) for driving the two switching valves are disclosed. There is disclosed a motorcycle (vehicle) including The two switching valves are attached to a portion of the exhaust pipe that is located on the side of the lower portion of the internal combustion engine (engine), and the actuator is disposed behind the upper portion of the internal combustion engine.

Japanese Patent No. 2678026

  However, in the motorcycle disclosed in Patent Document 1, the two switching valves are attached to a portion of the exhaust pipe located on the side of the lower part of the internal combustion engine, and the actuator is an internal combustion engine (engine). Since it is arranged behind the upper part, it is difficult to arrange the switching valve and the actuator close to each other. For this reason, there is an inconvenience that it is difficult to reduce the length of the wiring connecting the switching valve (exhaust control valve) and the actuator (motor). As a result, there is a problem that it is difficult to reduce the weight of the motorcycle, and it is difficult to reduce the size of the motorcycle (vehicle) because it is necessary to secure a larger space for arranging the wiring. There is. In Patent Document 1, the two switching valves are arranged on both sides in the width direction of the vehicle body, while the motor is arranged only on one side in the width direction of the vehicle body. The weight on one side tends to be larger than the weight on the other side. For this reason, there is a problem that it becomes difficult to balance the weight in the width direction of the vehicle body.

  The present invention has been made in order to solve the above-described problems, and one object of the present invention is to reduce the weight and size of the vehicle while suppressing the difficulty in achieving a weight balance in the width direction of the vehicle body. It is providing the vehicle which can perform.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, a vehicle according to one aspect of the present invention includes an engine, an exhaust pipe disposed on one side in the width direction of the vehicle body, connected to the engine, and the engine as viewed from the side of the vehicle body. Behind and on the same side of the vehicle body width direction as the exhaust pipe, the exhaust control valve attached to the exhaust pipe, the rear of the engine as viewed from the side of the vehicle body, and the width of the vehicle body It is disposed on the opposite side of the exhaust pipe and the exhaust control valve when viewed from the direction, and includes a motor that drives the exhaust control valve.

  In the vehicle according to this aspect, as described above, the exhaust control valve and the motor can be disposed close to each other by disposing the exhaust control valve and the motor behind the engine as viewed from the side of the vehicle body. Therefore, the length of the wiring connecting the exhaust control valve and the motor can be reduced. Thereby, the vehicle can be reduced in weight, and it is not necessary to secure a larger space for arranging the wiring, so that the vehicle can be reduced in size. In addition, by arranging the exhaust control valve on one side in the width direction of the vehicle body and arranging the motor on the side opposite to the exhaust pipe when viewed from the width direction of the vehicle body, the weight on one side in the width direction of the vehicle body is reduced. It can suppress becoming large compared with the weight of the other side. Thereby, it can suppress that it becomes difficult to take the weight balance of the width direction of a vehicle body. In addition, the exhaust control valve is disposed on one side in the width direction of the vehicle body, and the motor is disposed on the side opposite to the exhaust pipe when viewed from the width direction of the vehicle body, whereby the motor is exhausted to which the exhaust control valve is attached. Can be placed away from the tube. Thereby, it can suppress that a motor becomes high temperature by the heat | fever of an exhaust pipe.

  In the vehicle according to the above aspect, the vehicle is preferably disposed behind the engine as viewed from the side of the vehicle body, further includes an air cleaner that supplies air to the engine, and the motor is attached to the air cleaner. If comprised in this way, a motor can be easily arrange | positioned at the other side of the width direction of a vehicle body.

  In the vehicle provided with the air cleaner, preferably, the motor is attached to the outer surface of the air cleaner in the width direction of the vehicle body. If comprised in this way, a motor can be arrange | positioned to the other side of the width direction of a vehicle body more easily.

  The vehicle including the air cleaner preferably further includes a battery disposed on the opposite side of the exhaust pipe in the width direction of the vehicle body, and the motor is disposed below the battery. If comprised in this way, since a motor can be arrange | positioned in the vacant space under the battery, it can suppress that a vehicle enlarges. Further, since the battery can be disposed away from the exhaust pipe, it is possible to suppress the battery from becoming high temperature due to the heat of the exhaust pipe.

  In the vehicle including the battery, preferably, the battery is attached to a side surface of the air cleaner opposite to the side where the exhaust pipe is disposed in the width direction of the vehicle body. If comprised in this way, since a battery can be arrange | positioned away from an exhaust pipe easily, it can suppress easily that a battery becomes high temperature by the heat | fever of an exhaust pipe.

  In the vehicle provided with the battery, the battery is preferably arranged so as to protrude from the motor to the other side in the width direction of the vehicle body. If comprised in this way, a motor can be protected from the physical impact from the outside with a battery.

  The vehicle according to the above aspect preferably further includes a silencer connected to the exhaust pipe, and the motor is disposed on the side opposite to the side where the silencer is disposed in the width direction of the vehicle body. Thus, even when a silencer that is a heavy object is disposed on one side in the width direction of the vehicle body, a motor that is a heavy object is disposed on the other side opposite to one side in the width direction of the vehicle body. Thus, it is possible to prevent the weight on one side in the width direction of the vehicle body from becoming too large compared to the weight on the other side. Thereby, it can suppress that it becomes difficult to take the weight balance of the width direction of a vehicle body.

  In the vehicle according to the above aspect, preferably, a rear suspension disposed behind the engine as viewed from the side of the vehicle body, a first frame extending rearwardly from above the rear suspension, and extending rearwardly from below the rear suspension. And a second frame connected to the rear portion of the first frame, and the motor is disposed in a region surrounded by the rear suspension, the first frame, and the second frame when viewed from the side of the vehicle body. Yes. If comprised in this way, a motor can be protected from the physical impact from the outside with a rear suspension, a 1st frame, and a 2nd frame.

  In this case, the motor is preferably arranged at the bottom of the region. If comprised in this way, the motor which is a heavy article can be arrange | positioned below. Thereby, compared with the case where the motor which is a heavy article is arrange | positioned upwards, the gravity center of a vehicle can be arrange | positioned low. As a result, traveling stability can be improved.

  In the vehicle according to the above aspect, the exhaust control valve and the motor are preferably disposed at substantially the same height. If comprised in this way, since an exhaust control valve and a motor can be arrange | positioned closer, the length of the wiring which connects an exhaust control valve and a motor can be made smaller.

  In this case, preferably, the exhaust control valve and the motor are disposed at substantially the same height as the center of gravity of the vehicle. If comprised in this way, since it can suppress that the exhaust control valve and a motor are arrange | positioned in the position away from the gravity center of a vehicle, the moment of inertia around the gravity center of a vehicle can be reduced. As a result, the maneuverability around the center of gravity of the vehicle can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing the overall configuration of a motorcycle according to an embodiment of the present invention. 2-5 is a figure for demonstrating the structure of the motorcycle by one Embodiment shown in FIG. In the present embodiment, a motorcycle will be described as an example of the vehicle of the present invention. In the figure, the arrow FWD direction indicates the front in the traveling direction of the motorcycle. Hereinafter, the structure of the motorcycle 1 according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the overall structure of the motorcycle 1 according to an embodiment of the present invention is an aluminum main frame 3 that extends rearward through an upper side of an engine 22, which will be described later, at the rear of the head pipe portion 2. Is connected. The main frame 3 is connected to a left frame portion 3a and a right frame portion 3b (see FIG. 3) extending rearward from the left and right sides of the vehicle body in the traveling direction (arrow FWD direction). In the present embodiment, the left side and the right side mean the left side and the right side in the width direction of the vehicle body, respectively. The left side is an example of the “other side” of the present invention, and the right side is an example of the “one side” of the present invention.

  The left frame part 3a and the right frame part 3b (see FIG. 3) of the main frame 3 are formed so as to extend downward in the rear direction. 2 and 3, the left frame portion 3a of the main frame 3 includes an upper frame portion 3c and a lower frame portion 3d welded to the upper frame portion 3c. The right frame portion 3b (see FIG. 3) includes an upper frame portion 3e (see FIG. 3) and a lower frame portion 3f (see FIG. 3) welded to the upper frame portion 3e. Further, the upper parts of the lower frame parts 3d and 3f (see FIG. 3) are connected by an upper connecting part 3g.

  Further, the front part of the iron down tube 4 is connected to the front part of the main frame 3, and the left part of the left frame part 3a and the right frame part 3b (see FIG. 3) of the main frame 3 are respectively connected to the front part. The rear part of the left tube part 4a and the right tube part 4b (refer FIG. 3) of the down tube 4 are connected. Further, a left rail 5a and a right rail 5b (see FIG. 3) of a seat rail 5 that extend rearward and upward through the upper side of a rear suspension 15 described later are connected to the left frame portion 3a and the right frame portion 3b, respectively. Has been. The seat rail 5 is an example of the “first frame” in the present invention. The left rail 5a and the right rail 5b are connected by connecting sheet metal portions 5c and 5d. Further, a left stay 6 a of the back stay 6 is connected between a lower portion of the left frame portion 3 a and a rear portion of the left rail 5 a of the seat rail 5. Further, a right stay 6b (see FIG. 3) of the back stay 6 is connected between a lower portion of the right frame portion 3b (see FIG. 3) and a rear portion of the right rail 5b (see FIG. 3) of the seat rail 5. Yes. The backstay 6 is an example of the “second frame” in the present invention. The left stay 6a and the right stay 6b of the back stay 6 are formed so as to extend rearward through a lower side and a side of a rear suspension 15 described later. The head pipe portion 2, the main frame 3, the down tube 4, the seat rail 5, and the back stay 6 constitute a vehicle body frame 7.

  Further, as shown in FIG. 1, a handle 8 is rotatably disposed above the head pipe portion 2. In addition, a pair of front forks 9 is disposed below the head pipe portion 2. A front wheel 10 is rotatably attached to the lower ends of the pair of front forks 9. A front fender 11 is disposed above the front wheel 10 so as to cover the front wheel 10.

  A pivot shaft 12 is provided at the lower part of the main frame 3. The pivot shaft 12 pivotally supports the front end portion of the rear arm 13 so as to swing up and down. A rear wheel 14 is rotatably attached to the rear end portion of the rear arm 13.

  A rear suspension 15 is disposed at the rear of the main frame 3 and in front of the rear wheel 14. The upper part of the rear suspension 15 is attached to the upper connecting part 3 g of the main frame 3, and the lower part of the rear suspension 15 is connected to the rear arm 13 via the connecting member 16. Thereby, it is possible to absorb an impact when the rear arm 13 and the rear wheel 14 swing (move) in the vertical direction.

  Further, as shown in FIG. 2, a resin air cleaner 17 for supplying air to an engine 22 described later is disposed at the rear of the main frame 3. A battery 18 is attached to the left side surface of the air cleaner 17. Further, as shown in FIG. 3, a control valve 19 for controlling the opening degree of an air passage (not shown) inside the air cleaner 17 is attached to the upper surface of the air cleaner 17.

  A resin fuel tank 20 is disposed above the main frame 3 as shown in FIG. The lower portion of the fuel tank 20 is disposed in a region between the left frame portion 3a and the right frame portion 3b (see FIG. 3), and the bottom surface 20a is formed into a flat surface. A seat 21 is disposed behind the fuel tank 20.

  In addition, an engine 22 is disposed below the main frame 3 and above the down tube 4 as shown in FIG. The engine 22 includes a crankcase portion 22a, a cylinder block portion 22b, a cylinder head portion 22c, and a cylinder head cover portion 22d.

  A throttle body 23 is attached to the rear side of the cylinder head portion 22c. The throttle body 23 is configured to supply a mixed gas of fuel and air from the air cleaner 17 to an intake port (not shown).

  An air supply pipe 24 and one exhaust pipe 25 are attached to the front side of the cylinder head portion 22c. The air supply pipe 24 has a function of suppressing the exhaust port (not shown) from becoming a negative pressure. Further, as shown in FIG. 1, a reed valve unit 27 in which a reed valve (not shown) is accommodated is connected to the air supply pipe 24 via a rubber connecting pipe 26.

  As shown in FIGS. 2 and 3, the exhaust pipe 25 is formed so as to pass through the right side of the engine 22 and extend rearward. A muffler 28 is attached to the rear end of the exhaust pipe 25 as shown in FIGS. The muffler 28 is an example of the “muffler” of the present invention. Cover members 29 and 30 are screwed to the exhaust pipe 25 and the muffler 28 so as to cover the right side of the exhaust pipe 25 and the muffler 28.

  Here, in this embodiment, as shown in FIGS. 2 and 3, the opening of the exhaust pipe 25 is controlled at a portion of the exhaust pipe 25 located behind the engine 22 when viewed from the side of the vehicle body. One exhaust control valve 31 having a butterfly valve portion 31a (see FIG. 4) and a cover member 32 covering the exhaust control valve 31 are attached. As shown in FIG. 2, the exhaust control valve 31 is disposed in a region surrounded by the main frame 3, the seat rail 5, and the backstay 6 when viewed from the side of the vehicle body. Further, as shown in FIG. 3, the exhaust control valve 31 is disposed on the inner side (left side) of the right stay 6 b of the back stay 6.

  Further, as shown in FIGS. 4 and 5, one end of the wire 33 a of the opening cable 33 and one end of the wire 34 a of the closing cable 34 are connected to the exhaust control valve 31. A motor 35 for driving the exhaust control valve 31 is connected to the other end of the wire 33 a of the opening cable 33 and the other end of the wire 34 a of the closing cable 34. When the rotational speed of the engine 22 (see FIG. 2) is within a predetermined range (for example, a low rotation region or a high rotation region), the motor 35 is opened by rotating by a predetermined angle in a predetermined direction. The wire 33a of the cable 33 is wound up, the butterfly valve portion 31a of the exhaust control valve 31 is rotated, and the opening of the exhaust pipe 25 is increased. On the other hand, when the rotational speed of the engine 22 is in a predetermined range (for example, a middle rotation region), the motor 35 rotates by a predetermined angle in a direction opposite to the predetermined direction, thereby closing the closing cable 34. The wire 34a is wound up to rotate the butterfly valve portion 31a of the exhaust control valve 31, and the opening of the exhaust pipe 25 is reduced. Thereby, it is possible to improve the torque characteristic of the engine 22 in, for example, the middle rotation region.

  In this embodiment, as shown in FIGS. 2 and 3, the motor 35 is attached to the left side surface of the air cleaner 17 disposed behind the engine 22. That is, the motor 35 is disposed on the opposite side (left side) to the exhaust control valve 31 disposed on the right side of the vehicle body.

  In the present embodiment, the motor 35 is disposed in a vacant space below the battery 18. Further, as shown in FIG. 3, the motor 35 is disposed on the inner side (right side) of the left stay 6 a of the back stay 6.

  Further, in the present embodiment, the left (outside) end portion 35 a of the motor 35 is arranged on the inner side (right side) of the left (outside) end portion 18 a of the battery 18. That is, the battery 18 is disposed so as to protrude to the left (outside) of the motor 35.

  Further, in the present embodiment, as shown in FIG. 2, the motor 35 is disposed at the lower portion on the front side of the region 100 surrounded by the rear suspension 15, the seat rail 5, and the backstay 6 when viewed from the side of the vehicle body. Has been. The region 100 is an example of the “region” in the present invention.

  In the present embodiment, the exhaust control valve 31 and the motor 35 are both disposed at substantially the same height as the center of gravity G of the vehicle.

  In the present embodiment, as described above, the exhaust control valve 31 and the motor 35 are disposed close to each other by disposing the exhaust control valve 31 and the motor 35 behind the engine 22 when viewed from the side of the vehicle body. Therefore, the lengths of the opening cable 33 and the closing cable 34 connecting the exhaust control valve 31 and the motor 35 can be reduced. Thereby, the vehicle can be reduced in weight, and since it is not necessary to secure a larger space for arranging the opening-time cable 33 and the closing-time cable 34, the vehicle can be reduced in size. Further, by arranging the exhaust control valve 31 on the right side of the vehicle body and the motor 35 on the left side of the vehicle body, it is possible to suppress the weight on the right side of the vehicle body from becoming too large compared to the weight on the left side. Therefore, it can be suppressed that it is difficult to achieve a weight balance in the width direction of the vehicle body. Further, by arranging the exhaust control valve 31 on the right side of the vehicle body and the motor 35 on the left side of the vehicle body, the motor 35 can be arranged away from the exhaust pipe 25 to which the exhaust control valve 31 is attached. Therefore, it is possible to suppress the motor 35 from becoming high temperature due to the heat of the exhaust pipe 25.

  In the present embodiment, the motor 35 can be prevented from increasing in size by arranging the motor 35 in a vacant space below the battery 18. Further, by attaching the battery 18 to the left side surface of the air cleaner 17, the battery 18 can be disposed away from the exhaust pipe 25, so that the battery 18 is prevented from becoming high temperature due to the heat of the exhaust pipe 25. be able to.

  In the present embodiment, the battery 18 is disposed so as to protrude to the left of the motor 35, so that the battery 35 can protect the motor 35 from a physical impact from the outside.

  In the present embodiment, the motor 35 is disposed below the region 100 surrounded by the rear suspension 15, the seat rail 5, and the backstay 6 when viewed from the side of the vehicle body. The rail 5 and the back stay 6 protect the motor 35 from physical impact from the outside. Further, the motor 35, which is a heavy object, is disposed below by disposing the motor 35 below the region 100 surrounded by the rear suspension 15, the seat rail 5, and the backstay 6 when viewed from the side of the vehicle body. Therefore, the center of gravity G of the vehicle can be arranged lower than in the case where the motor 35 that is a heavy object is arranged upward. Thereby, running stability can be improved.

  Further, in the present embodiment, the exhaust control valve 31 and the motor 35 can be disposed closer to each other by disposing the exhaust control valve 31 and the motor 35 at substantially the same height position. The lengths of the opening-time cable 33 and the closing-time cable 34 that connect the valve 31 and the motor 35 can be further reduced.

  In the present embodiment, the exhaust control valve 31 and the motor 35 are separated from the center of gravity G of the vehicle by disposing the exhaust control valve 31 and the motor 35 at substantially the same height as the center of gravity G of the vehicle. Since it can suppress arrange | positioning in a position, the moment of inertia around the gravity center G of a vehicle can be reduced. Thereby, the controllability around the center of gravity G of the vehicle can be improved.

  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 embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  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 other vehicles such as automobiles, bicycles, tricycles, and ATVs (All Terrain Vehicles) can be used. It can also be applied to vehicles.

  In the above embodiment, the air cleaner is disposed at the rear of the engine and the motor for driving the exhaust control valve is attached to the air cleaner. However, the present invention is not limited thereto, and the air cleaner is disposed at the front of the engine. And a motor that drives the exhaust control valve may be attached to a member other than the air cleaner.

  In addition, although an example in which the exhaust control valve and the motor are arranged at substantially the same height as the center of gravity of the vehicle has been shown, the present invention is not limited thereto, and the exhaust control valve and the motor are substantially connected to the center of gravity of the vehicle. Need not be arranged at the same height.

  Further, in the above-described embodiment, the motor is shown as an example in which the motor is disposed below the region surrounded by the rear suspension, the seat rail, and the backstay as viewed from the side of the vehicle body, but the present invention is not limited thereto, You may arrange | position a motor in positions other than the lower part of the area | region enclosed by a rear suspension, a seat rail, and a backstay, seeing from the side of a vehicle body.

1 is a side view showing an overall configuration of a motorcycle according to an embodiment of the present invention. FIG. 2 is a side view showing a structure around a vehicle body frame and an exhaust pipe of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a plan view showing a structure around a body frame and an exhaust pipe of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a side view showing a structure around an exhaust pipe of the motorcycle according to the embodiment shown in FIG. 1. Fig. 2 is a plan view showing a structure around an exhaust pipe of the motorcycle according to the embodiment shown in Fig. 1.

Explanation of symbols

1 Motorcycle (vehicle)
5 Seat rail (first frame)
6 Backstay (second frame)
15 Rear suspension 17 Air cleaner 18 Battery 22 Engine 25 Exhaust pipe 28 Muffler (silencer)
31 Exhaust control valve 35 Motor 100 Area G Center of gravity

Claims (11)

Engine,
An exhaust pipe disposed on one side in the width direction of the vehicle body and connected to the engine;
An exhaust control valve disposed behind the engine as viewed from the side of the vehicle body and on one side in the width direction of the vehicle body same as the exhaust pipe, and attached to the exhaust pipe;
A motor disposed behind the engine as viewed from the side of the vehicle body and on the opposite side of the exhaust pipe and the exhaust control valve as viewed from the width direction of the vehicle body and driving the exhaust control valve A vehicle equipped with. An air cleaner disposed behind the engine as viewed from the side of the vehicle body and supplying air to the engine;
The vehicle according to claim 1, wherein the motor is attached to the air cleaner.   The vehicle according to claim 2, wherein the motor is attached to an outer surface of the air cleaner in the width direction of the vehicle body. A battery further disposed on the opposite side of the exhaust pipe in the width direction of the vehicle body;
The vehicle according to claim 2, wherein the motor is disposed below the battery.   The vehicle according to claim 4, wherein the battery is attached to a side surface of an air cleaner opposite to a side where the exhaust pipe is disposed in a width direction of the vehicle body.   The vehicle according to claim 4, wherein the battery is disposed so as to protrude from the motor to the other side in the width direction of the vehicle body. Further comprising a silencer connected to the exhaust pipe,
The vehicle according to claim 1, wherein the motor is disposed on a side opposite to a side on which the silencer is disposed in a width direction of the vehicle body. A rear suspension disposed behind the engine as viewed from the side of the vehicle body;
A first frame extending rearward from above the rear suspension;
A second frame extending rearwardly from below the rear suspension and connected to a rear portion of the first frame;
2. The vehicle according to claim 1, wherein the motor is disposed in an area surrounded by the rear suspension, the first frame, and the second frame as viewed from a side of the vehicle body.   The vehicle according to claim 8, wherein the motor is disposed at a lower portion of the region.   The vehicle according to claim 1, wherein the exhaust control valve and the motor are disposed at substantially the same height position.   The vehicle according to claim 10, wherein the exhaust control valve and the motor are disposed at substantially the same height as the center of gravity of the vehicle.

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