JP2003049643A - Exhaust device of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent exhaust interference of exhaust gas and to realize an optimal collective formation of exhaust pipes of V-shaped 5-cylinder engine. SOLUTION: In a motorcycle 10, the V-shaped five-cylinder engine 13 is loaded in a substantially center of a car body 11 by positioning three front cylinders forward and two back cylinders backward in the side view, a front left exhaust pipe 23, a front central exhaust pipe 24, and a front right exhaust pipe 25 are extended from the three front cylinders, and a back left exhaust pipe 31 and a back right exhaust pipe 32 are extended from the two back cylinder. The tip of the back left exhaust pipe 31 and the tip of the back right exhaust pipe 32 are connected to a first collective pipe 61, and the tips of two exhaust pipes 23 and 25 of the front left exhaust pipe 23, the front central exhaust pipe 24, and the front right exhaust pipe 25 are collected to a second collective pipe 62, and the tip of the remaining front central exhaust pipe 24 on the front side is connected to the first collective pipe 61.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a V-type engine in which three front cylinders are located forward and two rear cylinders are located rearward in a side view.
The present invention relates to an exhaust system for a motorcycle having a cylinder engine mounted substantially at the center of a vehicle body. 2. Description of the Related Art As an exhaust device for a motorcycle, for example, Japanese Patent Publication No. 5-38845, "Piping Structure of Engine Exhaust Pipe for Motorcycle" and Japanese Utility Model Publication No. 6-14027, "Disposition of Exhaust Pipe for Motorcycle" Structure "is known. According to FIG. 2 of the above publication, the above-mentioned cylinders 17, 1
8 are connected to the exhaust pipes 21 and 22, respectively, and these exhaust pipes 21 and 22 are assembled by a middle pipe 25 at the rear of the vehicle body.
Exhaust pipes 23 and 24 are respectively connected to the rear cylinders 19 and 20 of the vehicle body, and these exhaust pipes 23 and 24 are assembled by a middle pipe 26 at the rear of the vehicle body.
6 is adapted to a 4-cylinder V-type engine in which a tail pipe 27 is integrated by a tail pipe 27. According to FIG. 6 of the above publication, three exhaust pipes 30, 30, 30 are assembled by an exhaust pipe 31,
The exhaust pipes 30 and 30 are assembled by an exhaust pipe 32, and the exhaust pipes 31 and 32 are adapted to a five-cylinder engine in which the exhaust pipes 31 and 32 are combined into one exhaust pipe 33. [0004] However, the above-mentioned arrangement structure of the engine exhaust pipe of the motorcycle is an arrangement structure of the engine exhaust pipe applied to a four-cylinder V-type engine. In the case of a motorcycle to be mounted, it cannot be applied as it is. Further, since the exhaust pipe arrangement structure of the motorcycle described above is an exhaust pipe arrangement structure of a five-cylinder engine, the exhaust pipe arrangement structure is not necessarily appropriate for a motorcycle equipped with a V-type engine, for example.
Therefore, there is a demand for an exhaust system for a motorcycle having a collection form of exhaust pipes specific to a V-type five-cylinder engine. [0005] That is, an object of the present invention is to provide a motorcycle exhaust device having a collection form of exhaust pipes suitable for a V-type five-cylinder engine. According to a first aspect of the present invention, there is provided an exhaust system for a motorcycle in which three front cylinders are located forward and two rear cylinders are located rearward in a side view. A V-type five-cylinder engine is mounted at the approximate center of the vehicle body, and the front left exhaust pipe, front central exhaust pipe, and front right exhaust pipe extend from the front three cylinders,
In a motorcycle having a rear left exhaust pipe and a rear right exhaust pipe extending from a cylinder, the tip of the rear left exhaust pipe and the tip of the rear right exhaust pipe are first.
Connected to the collecting pipe, the tip of two exhaust pipes of the front left exhaust pipe, the front central exhaust pipe, and the front right exhaust pipe are collected in the second collecting pipe,
The tip of the remaining front exhaust pipe is connected to the first collecting pipe or the second collecting pipe. In a V-type five-cylinder engine, it is more difficult to assemble the five exhaust pipes in any combination than in a two-cylinder or four-cylinder engine. Therefore, the tip of the rear left exhaust pipe and the tip of the rear right exhaust pipe are connected to the first collecting pipe, and the tips of two exhaust pipes of the front left exhaust pipe, the front center exhaust pipe, and the front right exhaust pipe are connected to the first exhaust pipe. By assembling into two collecting pipes and connecting the tip of the remaining front exhaust pipe to the first collecting pipe or the second collecting pipe, exhaust gas exhaust interference is prevented. In general, the engine ignites the fifth cylinder in order from the first cylinder by shifting the timing of the explosion for each cylinder. For example, the rear left exhaust pipe and the rear right exhaust pipe are extended from the second and fourth cylinders, and these exhaust pipes are assembled in a first collecting pipe. The exhaust pipes are extended, these exhaust pipes are gathered in a second collecting pipe, and the front central exhaust pipe extending from the remaining third cylinder is gathered in the first collecting pipe or the second collecting pipe to balance exhaust pressure. By doing so, it is possible to easily prevent exhaust interference of exhaust gas. That is, it is possible to realize a collective form of exhaust pipes suitable for a V-type five-cylinder engine. Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a motorcycle equipped with an exhaust device according to the present invention. A motorcycle 10 has a pair of left and right main frames 12, 12 (rear side main frame 12) slightly rearward of a vehicle body from a head pipe 11. (Not shown), a V-type five-cylinder engine 13 is mounted below these main frames 12, 12, and a swing arm 15 is mounted at the rear of the main frames 12, 12 via a pivot shaft 14 so as to be able to swing up and down. The upper end of the rear cushion unit 16 is attached to the front upper portion of the swing arm 15 and the rear wheel 17 is attached to the rear end of the swing arm 15.
Are attached to the rear lower end of the main frame 12 via a link device 18, and a front left exhaust pipe 23, a front central exhaust pipe 24, and a front right exhaust pipe 25 provided for each cylinder from a cylinder head 21 on the front side of the engine 13. The rear left exhaust pipe 31 and the rear right exhaust pipe 32 provided for each cylinder from the cylinder head 28 on the rear side of the engine 13 are extended rearward, and these exhaust pipes 23 to 25 and the exhaust pipes 31 and 32 are extended. A seat cowl 34 which is selectively connected to the right side muffler 26 on the back side or the left side muffler 33 on the front side extends from the upper part of the main frames 12 and 12 to the rear, and a fuel tank 35 is provided inside the seat cowl 34. This is an on-road motorcycle in which a fuel pump 36 is mounted in the fuel tank 35. The engine 13 has three cylinders in the front cylinder head 21 and the rear cylinder head 2
Reference numeral 8 denotes a V-type five-cylinder engine having two cylinders, which is mounted so that three front cylinders are located forward and two rear cylinders are located rearward in a side view. Reference numeral 41 denotes a front fork rotatably attached to the head pipe 11, reference numeral 42 denotes a front wheel attached to a lower end of the front fork 41, reference numeral 43 denotes a front fender covering the front wheel 42 above, reference numeral 44 denotes an upper cowl, and reference numeral 45 denotes a middle. Cowl, 46 for lower cowl, 48 for radiator, 5
1 is a tank cover. Reference numeral 60 denotes an exhaust system for a motorcycle according to the present invention. It is an exhaust device that attempts to prevent it. FIG. 2 is a perspective view of an exhaust system for a motorcycle according to the present invention.
The “exhaust device 60” is a rear left exhaust pipe 31 and a rear right exhaust pipe 32 extending for each cylinder from the rear cylinder head 28 described in FIG. 1, and these exhaust pipes 31, 32
And a first collecting pipe 61 for collecting the auxiliary pipe 65 and the front end of the front central exhaust pipe 24 on the front side.
And the right muffler 26 attached to the end of the first collecting pipe 61.
And the right tail pipe 6 attached to the end of the right muffler 26
3, a front left exhaust pipe 23 and a front right exhaust pipe 25 extending from the front cylinder head 21 (see FIG. 1) for each cylinder, and a second collecting pipe 6 for collecting the tips of these exhaust pipes 23, 25.
2 and a right muffler 33 attached to the end of the second collecting pipe 62.
And the right tail pipe 6 attached to the end of the right muffler 33
4 That is, the exhaust device 60 is provided with the rear left exhaust pipe 3.
The first and rear right exhaust pipes 32 are connected to the first collecting pipe 61, and two front exhaust pipes 23, 25 of the front left exhaust pipe 23, the front central exhaust pipe 24, and the front right exhaust pipe 25 are connected. The tip of the second collecting pipe 6
2 and the tip of the remaining front central exhaust pipe 24
By connecting to the collecting pipe 61, it is intended to realize a collecting form of the exhaust pipe suitable for the V-type five-cylinder engine, and thereby to prevent the exhaust interference of the exhaust gas. In other words, the exhaust system 60 mounts the V-type five-cylinder engine 13 (see FIG. 1) substantially in the center of the vehicle body 11 so that three front cylinders are located forward and two rear cylinders are located rearward in a side view. The motorcycle 1 has a front left exhaust pipe 23, a front center exhaust pipe 24, and a front right exhaust pipe 25 extending from front three cylinders, and a rear left exhaust pipe 31 and a rear right exhaust pipe 32 extending from rear two cylinders.
0 (see FIG. 1), the tip of the rear left exhaust pipe 31 and the tip of the rear right exhaust pipe 32 are connected to the first collecting pipe 61, and the front left exhaust pipe 23, the front center exhaust pipe 24, and the front right exhaust pipe 25 are connected. Of the two exhaust pipes are collected in the second collecting pipe 62, and the tip of the remaining front exhaust pipe is connected to the first collecting pipe 61. Alternatively, as shown in FIG. The tip of the pipe is the second collecting pipe 6
2 can be said to be connected. FIG. 3 is a schematic view showing an exhaust pipe assembly form of the exhaust system for a motorcycle according to the present invention, showing a state in which the exhaust system 60 is connected to the engine 13 (see FIG. 1). here,
Represents the cylinder number of the engine 13, represents the first cylinder, and represents the fifth cylinder. That is, the front left exhaust pipe 23 is connected to the first cylinder, the front center exhaust pipe 24 is connected to the third cylinder, the front right exhaust pipe 25 is connected to the fifth cylinder, and the rear left exhaust pipe 3
1 indicates that it was connected to the second cylinder, and the rear exhaust pipe 32 was connected to the fourth cylinder. The V-type five-cylinder engine 13 (see FIG. 1) performs ignition by shifting the explosion timing for each cylinder. Therefore, two exhaust pipes 3 extending from the second cylinder and the fourth cylinder
1, 32 are collected in the first collecting pipe 61, and the first cylinder and the fifth cylinder
The two exhaust pipes 23 and 25 extending from the number-th cylinder are gathered in the second collecting pipe 62, and the exhaust pipes 24 extending from the number-third cylinder are gathered in the first collecting pipe 61 so as to balance the exhaust pressure. Thus, it is possible to easily prevent the exhaust gas from interfering with the exhaust gas. That is, it is possible to realize a collective form of exhaust pipes suitable for a V-type five-cylinder engine. That is, the exhaust device 60 is connected to the rear left exhaust pipe 3.
The first and rear right exhaust pipes 32 are connected to the first collecting pipe 61, and two front exhaust pipes 23, 25 of the front left exhaust pipe 23, the front central exhaust pipe 24, and the front right exhaust pipe 25 are connected. The tip of the second collecting pipe 6
2 and the tip of the remaining front central exhaust pipe 24
Since it is connected to the collecting pipe 61, the V-type five-cylinder engine 13
(See FIG. 1), it is possible to realize an optimal form of collecting the exhaust pipes. With this, it is possible to prevent exhaust interference of exhaust gas. FIGS. 4A to 4C are schematic diagrams showing variations of the exhaust pipe assembly form of the exhaust system for a motorcycle according to the present invention. FIG. 4A shows a basic pattern of the exhaust system 60. (b) shows a first variation of the exhaust device 60, and (c) shows a second variation of the exhaust device 60. In (a), 23 is a front left exhaust pipe, 24 is a front center exhaust pipe, 25 is a front right exhaust pipe, 31 is a rear left exhaust pipe, 32 is a rear right exhaust pipe, 61 is a first collecting pipe, and 62 is a first collecting pipe. 2 collecting pipes, 2
Reference numeral 6 denotes a right muffler, and 33 denotes a left muffler, which indicates the exhaust device 60 described with reference to FIGS. In FIG. 2B, the tip of the first collecting pipe 61 and the tip of the second collecting pipe 62 are gathered to the exhaust main pipe 66, and the tip of the exhaust main pipe 66 is connected to the first and second branch pipes 67, 67. The right muffler 26 was connected to the tip of the first branch pipe 67, and the right muffler 33 was connected to the tip of the second branch pipe 68.
A first variation of the exhaust device 60 is as follows.
The end of the second collecting pipe 61 and the end of the second collecting pipe 61 are gathered in the exhaust main pipe 66 so that the pressure of the exhaust gas is made uniform to prevent exhaust interference. In (c), the tip of the first collecting pipe 61 and the tip of the second collecting pipe 61 are gathered in an exhaust main pipe 66, and a muffler 69 is connected to the exhaust main pipe 66. In a second variation of the exhaust device 60, the exhaust sound can be easily adjusted by combining the tip of the first collecting pipe 61 and the tip of the second collecting pipe 61 into the exhaust main pipe 66 to make one muffler 69. It was made. FIG. 5 is a perspective view of a motorcycle exhaust system according to a second embodiment of the present invention.
The same reference numerals are used for the same components as those used in (1), and the detailed description is omitted. Motorcycle exhaust system 70 (hereinafter referred to as
The abbreviated “exhaust device 70” includes a rear left exhaust pipe 74 and a rear right exhaust pipe 75 extending from the rear cylinder head 28 (see FIG. 1) described in FIG. Front central exhaust pipe 7 extending from one cylinder 21
2, a first collecting pipe 76 for collecting these exhaust pipes 72, 74, and 75, a front left exhaust pipe 71 and a front right exhaust pipe 73 extending for each cylinder from the front cylinder head 21 (see FIG. 1). And a second collecting pipe 77 for collecting the ends of the exhaust pipes 71 and 73, and first and second collecting pipes 76 and 7
7 and a muffler 69 attached to the exhaust main pipe 66. 79 is a tail pipe attached to the muffler 69. FIG. 6 is a schematic view showing an exhaust pipe assembly form of a motorcycle exhaust system according to a second embodiment of the present invention.
The exhaust device 70 is provided at the front of the rear left exhaust pipe 74 and at the rear right exhaust pipe 7.
5 is connected to a first collecting pipe 76, and two exhaust pipes 71, 73 of a front left exhaust pipe 71, a front central exhaust pipe 72, and a front right exhaust pipe 73 are connected to a second collecting pipe 77. The front end of the front central exhaust pipe 72 on the front side that is collected and left can also be seen as an aggregated form of exhaust pipes connected to the first collecting pipe 76, so that it is possible to prevent exhaust gas exhaust interference. In other words, it is possible to realize an optimal collection form of the exhaust pipes of the V-type five-cylinder engine 13 (see FIG. 1). FIGS. 7A to 7C are schematic views showing a variation of an exhaust pipe assembly form of a motorcycle exhaust system according to a second embodiment of the present invention.
0 shows a basic pattern, and FIG.
5 shows a variation, and (c) shows a second variation of the exhaust device 70. In (a), 71 is a front left exhaust pipe, 72 is a front center exhaust pipe, 73 is a front right exhaust pipe, 74 is a rear left exhaust pipe, 75 is a rear right exhaust pipe, 76 is a first collecting pipe, 77
Denotes a second collecting pipe and a 69 muffler, and shows the exhaust device 70 described with reference to FIGS. 5 and 6. In (b), the right muffler 26 is connected to the end of the first collecting pipe 76, and the left muffler 3 is connected to the end of the second collecting pipe 77.
3 to connect the exhaust gas to the vehicle body 11 (see FIG. 1).
Can be separated into left and right. A first variation of the exhaust device 70 is to prevent exhaust interference and enable a fearless motorcycle 10 (FIG. 1) by allowing exhaust gas to be separately discharged to the left and right of the vehicle body 11 (see FIG. 1).
Reference) can be realized. In (c), the tip of the first collecting pipe 76 and the tip of the second collecting pipe 77 are gathered in the exhaust main pipe 66, and the tip of the exhaust main pipe 66 is connected to the first and second branch pipes 67, 67. The right muffler 26 is connected to the end of the first branch pipe 67, and the right muffler 33 is connected to the end of the second branch pipe 68. The second variation of the exhaust device 70 is the first variation.
The tip of the collecting pipe 76 and the tip of the second collecting pipe 77 are connected to the exhaust main pipe 66.
To prevent the exhaust gas from interfering by uniformizing the exhaust gas pressure and at the same time the motorcycle 10 (FIG. 1)
Reference) can be realized. FIGS. 8 (a) to 8 (c) are schematic views showing a variation of an exhaust pipe assembly form of a motorcycle exhaust system according to a third embodiment of the present invention.
The same reference numerals are used for the same components as those used in (1), and the detailed description is omitted. (A) shows a basic pattern of a motorcycle exhaust device 80 (hereinafter abbreviated as “exhaust device 80”), (b) shows a first variation of the exhaust device 80, and (c) shows an exhaust device. 80 shows a second variation of the embodiment. In (a), the exhaust device 80 connects the tip of the rear left exhaust pipe 84 and the tip of the rear right exhaust pipe 85 to a first collecting pipe 86.
The first muffler pipe 86 is connected to the right muffler 26, and the front left exhaust pipe 81, the front central exhaust pipe 82 and the front right exhaust pipe 83 are connected to two exhaust pipes 81, 83. The auxiliary pipe 88 was connected, the ends of the auxiliary pipe 88 and the front central exhaust pipe 82 were collected in a second collecting pipe 87, and the left muffler 33 was connected to the second collecting pipe 87. That is, the exhaust device 80 is connected to the rear left exhaust pipe 8.
4 and the end of the rear right exhaust pipe 85 are connected to the first collecting pipe 86, and the two exhaust pipes 81, 83 of the front left exhaust pipe 81, the front central exhaust pipe 82, and the front right exhaust pipe 83 are connected. The tip of the second collecting pipe 6
2 and the tip of the remaining front central exhaust pipe 82
It can be said that it was connected to the collecting pipe. With this,
This is to prevent the exhaust gas from interfering with the exhaust gas. In (b), the tip of the first collecting pipe 86 and the tip of the second collecting pipe 87 are gathered in the exhaust main pipe 66, and the tip of the exhaust main pipe 66 is connected to the first and second branch pipes 67, 67. The right muffler 26 was connected to the tip of the first branch pipe 67, and the right muffler 33 was connected to the tip of the second branch pipe 68.
A first variation of the exhaust device 80 is a first collecting pipe 86
The end of the second collecting pipe 87 and the end of the second collecting pipe 87 are gathered in the exhaust main pipe 66 so that the pressure of the exhaust gas is made uniform to prevent exhaust interference. In (c), the tip of the first collecting pipe 86 and the tip of the second collecting pipe 87 are gathered in the exhaust main pipe 66, and the muffler 69 is connected to the exhaust main pipe 66. The second variation of the exhaust device 80 is such that the end of the first collecting pipe 86 and the end of the second collecting pipe 87 are combined into the exhaust main pipe 66 to make the muffler 69 one, so that the exhaust sound can be easily adjusted. It was made. FIGS. 9 (a) to 9 (c) are schematic views showing a variation of an exhaust pipe assembly form of a motorcycle exhaust system according to a fourth embodiment of the present invention.
The same reference numerals are used for the same components as those used in (1), and the detailed description is omitted. (A) shows a basic pattern of an exhaust device 90 (hereinafter abbreviated as "exhaust device 90") of a motorcycle, (b) shows a first variation of the exhaust device 90, and (c) shows an exhaust device. 90 shows a second variation of the 90. In (a), the exhaust device 90 includes a first collecting pipe 96 that connects the tip of the rear left exhaust pipe 94 and the tip of the rear right exhaust pipe 95.
The right muffler 26 is connected to the first collecting pipe 96, the front left exhaust pipe 91, the front central exhaust pipe 92 and the tip of the front right exhaust pipe 93 are collected in the second collecting pipe 97, The left muffler 33 was connected to the two collecting pipes 97. That is, the exhaust device 90 is connected to the rear left exhaust pipe 9.
4 and the tip of the rear right exhaust pipe 95 are gathered in the first collecting pipe 96, and the tips of the front left exhaust pipe 91, the front center exhaust pipe 92 and the front right exhaust pipe 93 are gathered in the second collecting pipe 97. Thus, it is intended to prevent the exhaust gas from interfering with the exhaust gas. With this, it is possible to realize the optimal form of the exhaust pipes of the V-type five-cylinder engine 13 (see FIG. 1). In (b), the tip of the first collecting pipe 96 and the tip of the second collecting pipe 97 are gathered in the exhaust main pipe 66, and the tip of the exhaust main pipe 66 is connected to the first and second branch pipes 67, 67. The right muffler 26 was connected to the tip of the first branch pipe 67, and the right muffler 33 was connected to the tip of the second branch pipe 68.
A first variation of the exhaust device 90 is as follows.
The end of the second collecting pipe 97 and the end of the second collecting pipe 97 are gathered in the exhaust main pipe 66 so that the pressure of the exhaust gas is made uniform to prevent the interference of the exhaust gas. In (c), the tip of the first collecting pipe 96 and the tip of the second collecting pipe 97 are assembled to the exhaust main pipe 66, and the muffler 69 is connected to the exhaust main pipe 66. A second variation of the exhaust device 90 is such that the end of the first collecting pipe 96 and the end of the second collecting pipe 97 are combined into the exhaust main pipe 66 to make the muffler 69 one, so that the exhaust sound can be easily adjusted. It was made. In the embodiment, as shown in FIG. 1, the exhaust device 60 for an on-road motorcycle has been described. However, the present invention is not limited to this. Is also good. According to the present invention, the following effects can be obtained by the above-described structure. In claim 1, the tip of the rear left exhaust pipe and the tip of the rear right exhaust pipe are connected to the first collecting pipe, and the two exhaust pipes of the front left exhaust pipe, the front central exhaust pipe, and the front right exhaust pipe are connected. Since the tip is collected in the second collecting pipe and the tip of the remaining front exhaust pipe is connected to the first collecting pipe or the second collecting pipe, it is possible to prevent the exhaust gas from interfering with the exhaust gas. Generally, the engine ignites the No. 5 cylinder in order from the No. 1 cylinder by shifting the explosion timing for each cylinder. For example, the rear left exhaust pipe and the rear right exhaust pipe are extended from the second and fourth cylinders, and these exhaust pipes are assembled in a first collecting pipe. The exhaust pipes are extended, these exhaust pipes are assembled in a second collecting pipe, and the front central exhaust pipe extending from the remaining third cylinder is connected to the first exhaust pipe.
By collecting in the collecting pipe or the second collecting pipe and balancing the exhaust pressure, it is possible to easily prevent the exhaust gas from interfering with the exhaust gas. That is, it is possible to realize a collective form of the exhaust pipes suitable for the V-type five-cylinder engine.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a motorcycle equipped with an exhaust device according to the present invention. FIG. 2 is a perspective view of a motorcycle exhaust device according to the present invention. FIG. FIG. 4 is a schematic view showing an exhaust pipe assembly form of a motorcycle exhaust device. FIG. 4 is a schematic view showing a variation of an exhaust pipe assembly form of a motorcycle exhaust apparatus according to the present invention. FIG. 5 is a second embodiment according to the present invention. FIG. 6 is a perspective view of an exhaust system of a motorcycle according to the present invention. FIG. 6 is a schematic view showing an exhaust pipe assembly form of an exhaust system of a motorcycle according to a second embodiment of the present invention. FIG. 7 is a second embodiment of the present invention. FIG. 8 is a schematic view showing a variation of an exhaust pipe assembly form of a motorcycle exhaust device according to the present invention. FIG. 8 is a schematic view showing a variation of an exhaust pipe assembly form of a motorcycle exhaust apparatus according to a third embodiment of the present invention. An automatic automatic transmission according to a fourth embodiment of the present invention. Schematic diagram showing variations of the exhaust pipe assembly form of the exhaust device of the motorcycle [Description of reference numerals] 10 ... Motorcycle, 11 ... Body, 13 ... V type 5 cylinder engine, 23, 71, 81, 91 ... Front left exhaust pipe , 24, 7
2, 82, 92: front central exhaust pipe, 25, 73, 83, 9
3: Front right exhaust pipe, 31, 74, 84, 94 ... Rear left exhaust pipe, 32, 75, 85, 95 ... Rear right exhaust pipe, 60, 7
0, 80, 90 ... exhaust device, 61, 76, 86, 96 ...
1st collecting pipe, 62, 77, 87, 97 ... 2nd collecting pipe.

Claims (1)

Claims 1. A front three cylinder front and a rear two rear in a side view.
A V-type five-cylinder engine is mounted at the approximate center of the vehicle body so that the cylinders are located. The front left exhaust pipe, the front center exhaust pipe and the front right exhaust pipe extend from the front three cylinders, and the rear left exhaust pipe extends from the rear two cylinders. And a motorcycle extending a rear right exhaust pipe, wherein a tip of the rear left exhaust pipe and a tip of the rear right exhaust pipe are connected to a first collecting pipe, and the front left exhaust pipe, the front center exhaust pipe, and the front right exhaust pipe are connected. The exhaust of a motorcycle characterized in that the two exhaust pipes of the pipes are gathered at a second collecting pipe, and the tip of the remaining front exhaust pipe is connected to the first collecting pipe or the second collecting pipe. apparatus.