JPS64273B2 - - Google Patents
Info
- Publication number
- JPS64273B2 JPS64273B2 JP55143659A JP14365980A JPS64273B2 JP S64273 B2 JPS64273 B2 JP S64273B2 JP 55143659 A JP55143659 A JP 55143659A JP 14365980 A JP14365980 A JP 14365980A JP S64273 B2 JPS64273 B2 JP S64273B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- exhaust pipe
- engine
- rear wheel
- vehicle body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003584 silencer Effects 0.000 claims description 9
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Characterised By The Charging Evacuation (AREA)
Description
【発明の詳細な説明】
本発明は自動二輪車の排気装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust system for a motorcycle.
自動二輪車に搭載される多気筒エンジンには前
後Ｖ型にした多気筒エンジンと並列横置きにした
多気筒エンジンとがある。このうち前後Ｖ型多気
筒エンジンは、並列横置多気筒エンジンに比べて
車体幅を狭くできるという利点があり、それによ
つてライダーが乗車したときの両膝間のグリツプ
幅を狭くして乗心地や操縦安定性を向上し、また
バンク角（車体を直立から側方へ傾斜させた角
度）を大きくすることができる等の利点がある。 Multi-cylinder engines installed in motorcycles include multi-cylinder engines arranged in a V-shape front and rear, and multi-cylinder engines arranged horizontally in parallel. Of these, V-type multi-cylinder engines in the front and rear have the advantage of being able to make the vehicle body narrower than parallel transverse multi-cylinder engines, which reduces the grip width between the rider's knees when riding, resulting in a comfortable ride. It has advantages such as improving steering stability and increasing the bank angle (the angle at which the vehicle body is tilted from upright to the side).
しかし、その反面で、前後Ｖ型エンジンの場合
は、気筒が前後に離れているので、前気筒の排気
管と後気筒の排気管とで、消音器までの長さが相
当に異なつたものになり、排気抵抗に差異を生じ
て両気筒間に出力差を生ずるという不具合を有し
ている。すなわち、後気筒側の排気管長が前気筒
のそれに比べて短くなるため、特にその後気筒の
排気管長を前気筒のそれに、機能的に実質的に同
じになるように出来るだけ近づける必要があるの
である。 However, on the other hand, in the case of a V-type engine, the cylinders are separated from each other, so the length to the silencer between the front cylinder's exhaust pipe and the rear cylinder's exhaust pipe is considerably different. This results in a difference in exhaust resistance, resulting in a difference in output between the two cylinders. In other words, since the exhaust pipe length of the rear cylinder side is shorter than that of the front cylinder, it is necessary to make the exhaust pipe length of the rear cylinder as close as possible to that of the front cylinder so that they are functionally essentially the same. .
従来、このような後気筒の排気管の対策として
は、気筒側面から延びる排気管を、前気筒の排気
管と同じ様に前方へ延ばしてから後方へ反転させ
るようにしたり、あるいは後輪駆動用のチエンを
横切つて横方向へ延ばしたりするものであつた。
しかし、前者では排気管がフートレスト（足乗せ
バー）の取付け位置を制約したり、また横方向へ
の出つ張りによつてバンク角を縮小したりする問
題があり、また意匠上や火傷対策からも問題があ
つた。また、後者では排気管が上下に揺動するチ
エンと干渉するおそれがあり、これも満足できる
対策とはいえなかつた。 Conventionally, countermeasures for rear cylinder exhaust pipes include extending the exhaust pipe from the side of the cylinder forward in the same way as the front cylinder exhaust pipe, and then reversing it to the rear. The chain was extended laterally across the chain.
However, in the former case, there are problems in that the exhaust pipe restricts the mounting position of the footrest (foot rest bar), and the bank angle is reduced due to the lateral protrusion. There was also a problem. Furthermore, in the latter case, there was a risk that the exhaust pipe would interfere with the chain that swings up and down, and this was also not a satisfactory solution.
本発明の目的は、上述のように特に後気筒側の
排気管が有する問題を解消し、後気筒の排気管が
チエン等の駆動機構と干渉を起こすことなく長く
することができ、しかもバンク角を縮小するよう
なことがなく、前後Ｖ型多気筒エンジンが本来有
する利点を十分に生かせるようにする自動二輪車
の排気装置を提供することにある。 An object of the present invention is to solve the above-mentioned problems particularly with the exhaust pipe on the rear cylinder side, to make the rear cylinder exhaust pipe long without interfering with a drive mechanism such as a chain, and to have a bank angle. It is an object of the present invention to provide an exhaust system for a motorcycle, which does not reduce the size of the front and rear V-type multi-cylinder engines and makes full use of the inherent advantages of the front and rear V-type multi-cylinder engines.
上記目的を達成する本発明は、前後Ｖ型の多気
筒エンジンを搭載し、該エンジンの動力を車体の
片側に配置した揺動自在な駆動機構により後輪へ
伝達するようにした自動二輪車において、後気筒
の排気管を該気筒の後面から後方へ導くと共に、
前記エンジンと後輪とに挟まれる領域で屈曲蛇行
させたのち、前記駆動機構の配置側とは反対側の
後輪側部に配置した消音器に連結したことを特徴
とするものである。 To achieve the above object, the present invention provides a motorcycle equipped with a front and rear V-type multi-cylinder engine, in which the power of the engine is transmitted to the rear wheels by a swingable drive mechanism disposed on one side of the vehicle body. While guiding the exhaust pipe of the rear cylinder rearward from the rear surface of the cylinder,
It is characterized in that it bends and meanders in an area sandwiched between the engine and the rear wheel, and then connects to a silencer placed on the side of the rear wheel opposite to the side where the drive mechanism is placed.
以下、図に示す本発明の実施例によつて説明す
る。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes embodiments of the present invention shown in the drawings.
図は本発明の実施例よりなる排気装置を装備し
た自動二輪車の要部を概略的に示した斜視図であ
る。 The figure is a perspective view schematically showing the main parts of a motorcycle equipped with an exhaust system according to an embodiment of the present invention.
図において１は前輪、２は後輪であり、３は前
輪１および後輪２の間の車体フレーム上に搭載さ
れたＶ型エンジンである。Ｖ型エンジン３はその
前気筒３ａと後気筒３ｂとが車体の前後方向に一
列に配列するように搭載されている。Ｖ型エンジ
ン３と後輪２との間には、車体の片側に駆動機構
としてチエン４が連結され、エンジン３の動力が
このチエン４を介して後輪２へ伝導されるように
なつている。後輪２は緩衝器を介して支持されて
いるので上下動自在となつており、このためチエ
ン４はエンジン側を中心にして後輪側を上下に揺
動する。 In the figure, 1 is a front wheel, 2 is a rear wheel, and 3 is a V-type engine mounted on the body frame between the front wheel 1 and the rear wheel 2. The V-type engine 3 is mounted so that its front cylinder 3a and rear cylinder 3b are arranged in a line in the longitudinal direction of the vehicle body. A chain 4 as a drive mechanism is connected to one side of the vehicle body between the V-type engine 3 and the rear wheels 2, and the power of the engine 3 is transmitted to the rear wheels 2 via this chain 4. . Since the rear wheel 2 is supported via a shock absorber, it can freely move up and down, and therefore the chain 4 swings up and down on the rear wheel side with the engine side as the center.
車体の両側にはそれぞれ消音器５ａ，５ｂが配
設され、このうちチエン４と同じ側にある消音器
５ａには前気筒３ａの排気管６ａが連結されてい
る。排気管６ａは前気筒３ａの前面から先ず前方
へ向つて導出され、次いで車体側方へ屈曲された
後、後方へ延長し消音器５ａに連結される。 Silencers 5a and 5b are provided on both sides of the vehicle body, and the silencer 5a on the same side as the chain 4 is connected to the exhaust pipe 6a of the front cylinder 3a. The exhaust pipe 6a is first guided forward from the front surface of the front cylinder 3a, then bent toward the side of the vehicle body, and then extended rearward and connected to the muffler 5a.
一方、後気筒３ｂの排気管６ｂは、その気筒後
面から後方へ導かれ、エンジン３と後輪２とに挟
まれる領域内で車体フレームの間を屈曲蛇行する
ように通過し、しかるのち、車体を挟んで上記チ
エン４の配置側とは反対側の後輪側部に配置され
た消音器５ｂに対して連結されるようになつてい
る。このように排気管６ｂを、エンジン３と後輪
２との間の領域内で屈曲蛇行させることによつて
その配管長を長くし、前気筒３ａの排気管６ａに
対する不足長さを調整するようにしている。この
長さ調整によつて両排気管６ａ，６ｂの排気抵抗
がほヾ等しくなるようにし、両気筒３ａ，３ｂの
出力をほゞ等しくするように調整しているのであ
る。 On the other hand, the exhaust pipe 6b of the rear cylinder 3b is guided rearward from the rear surface of the cylinder, passes between the vehicle body frames in a meandering manner within an area sandwiched between the engine 3 and the rear wheel 2, and then is connected to the vehicle body. The silencer 5b is connected to a silencer 5b disposed on the rear wheel side opposite to the side on which the chain 4 is disposed. By making the exhaust pipe 6b bend and meander within the area between the engine 3 and the rear wheel 2, the length of the pipe is increased, and the insufficient length of the front cylinder 3a relative to the exhaust pipe 6a is adjusted. I have to. By adjusting the length, the exhaust resistances of both exhaust pipes 6a and 6b are made to be approximately equal, and the outputs of both cylinders 3a and 3b are adjusted to be approximately equal.
上述のように上記排気装置では、後気筒３ｂの
排気管６ｂを、エンジン３と後輪２との間の領域
内で屈曲蛇行させるようにして長さを稼いだの
ち、最後にチエン４の配置側とは反対側の後輪側
部に配置された消音器５ｂに連結する構成にした
ので、この後気筒３ｂの排気管６ｂを上下揺動す
るチエン４に干渉させたり、またフートレストの
取付け場所を制約したりすることはなく、しかも
その排気管６ｂの機能を前気筒３ａの排気管６ａ
が有する機能と実質的に差異のない同じものにす
ることができる。 As described above, in the above exhaust system, the exhaust pipe 6b of the rear cylinder 3b is made to bend and meander within the area between the engine 3 and the rear wheel 2 to increase its length, and then the arrangement of the chain 4 is finally determined. Since it is configured to be connected to the silencer 5b placed on the side of the rear wheel on the opposite side, the exhaust pipe 6b of the rear cylinder 3b can be prevented from interfering with the vertically swinging chain 4, and the mounting location of the footrest can be changed. Moreover, the function of the exhaust pipe 6b is similar to that of the exhaust pipe 6a of the front cylinder 3a.
It can be made to have the same function as that of .
また、後気筒３ｂの排気管６ｂが、エンジン３
と後輪２とに挟まれる領域内に集約されていて、
車体幅方向に大きくはみ出すことがないため、車
体のバンク角を縮小することはない。したがつ
て、前後Ｖ型多気筒エンジンが本来有するバンク
角を大きくできるという利点を十分に生かすこと
ができる。 Further, the exhaust pipe 6b of the rear cylinder 3b is connected to the engine 3.
and rear wheel 2,
Since it does not protrude significantly in the vehicle width direction, the bank angle of the vehicle body is not reduced. Therefore, it is possible to take full advantage of the inherent advantage of the front and rear V-type multi-cylinder engine in that the bank angle can be increased.
また、上記後気筒３ｂの排気管６ｂの構成によ
つて意匠の外見を良好にし、かつフートに対する
火傷対策も向上することができる。 Furthermore, the configuration of the exhaust pipe 6b of the rear cylinder 3b improves the appearance of the design and improves protection against burns on the foot.
上述したように本発明の排気装置は、前後Ｖ型
の多気筒エンジンを搭載し、該エンジンの動力を
車体の片側に配置した揺動自在な駆動機構により
後輪へ伝達するようにした自動二輪車において、
後気筒の排気管を該気筒の後面から後方へ導くと
共に、前記エンジンと後輪とに挟まれる領域で屈
曲蛇行させたのち、前記駆動機構の配置側とは反
対側の後輪側部に配置した消音器に連結したもの
である。 As described above, the exhaust system of the present invention is applicable to a motorcycle equipped with a front and rear V-type multi-cylinder engine, and the power of the engine is transmitted to the rear wheels by a swingable drive mechanism disposed on one side of the vehicle body. In,
The exhaust pipe of the rear cylinder is guided rearward from the rear surface of the cylinder, and is bent and meandered in a region sandwiched between the engine and the rear wheel, and then placed on the side of the rear wheel on the opposite side from where the drive mechanism is located. It is connected to a silencer.
したがつて、後気筒の排気管をチエン等の駆動
機構と干渉を起こさないように長くして、前気筒
の排気管との機能差をなくすようにすることがで
き、また車体幅方向への出つ張りによつてバンク
角を縮小するようなことがないので、前後Ｖ型多
気筒エンジンが本来有するバンク角を小さくでき
るという利点を十分に生かすことができる。 Therefore, the exhaust pipe of the rear cylinder can be made longer so as not to interfere with the drive mechanism such as a chain, and the functional difference between the exhaust pipe of the front cylinder and the exhaust pipe of the front cylinder can be eliminated. Since the bank angle is not reduced due to the protrusion, it is possible to fully utilize the advantage that the front and rear V-type multi-cylinder engine inherently has in that the bank angle can be reduced.
図は本発明の実施例よりなる排気装置を装備し
た自動二輪車の要部を概略的に示した斜視図であ
る。
３……Ｖ型エンジン、３ａ……前気筒、３ｂ…
…後気筒、４……チエン、５ａ，５ｂ……消音
器、６ａ，６ｂ……排気管。
The figure is a perspective view schematically showing the main parts of a motorcycle equipped with an exhaust system according to an embodiment of the present invention. 3...V-type engine, 3a...front cylinder, 3b...
... Rear cylinder, 4... Chain, 5a, 5b... Silencer, 6a, 6b... Exhaust pipe.
Claims (1)
ジンの動力を車体の片側に配置した揺動自在な駆
動機構により後輪へ伝達するようにした自動二輪
車において、後気筒の排気管を該気筒の後面から
後方へ導くと共に、前記エンジンと後輪とに挟ま
れる領域で屈曲蛇行させたのち、前記駆動機構の
配置側とは反対側の後輪側部に配置した消音器に
連結したことを特徴とする自動二輪車の排気装
置。1. In a motorcycle equipped with a V-type multi-cylinder engine in the front and rear, the power of the engine is transmitted to the rear wheel by a swingable drive mechanism placed on one side of the vehicle body, and the exhaust pipe of the rear cylinder is connected to the rear cylinder. It is guided rearward from the rear surface, bent and meandered in an area sandwiched between the engine and the rear wheel, and then connected to a silencer placed on the side of the rear wheel opposite to the side where the drive mechanism is placed. Characteristic motorcycle exhaust system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14365980A JPS5770731A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for autcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14365980A JPS5770731A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for autcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5770731A JPS5770731A (en) | 1982-05-01 |
| JPS64273B2 true JPS64273B2 (en) | 1989-01-05 |
Family
ID=15343932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14365980A Granted JPS5770731A (en) | 1980-10-16 | 1980-10-16 | Exhaust device for autcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5770731A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8061468B2 (en) * | 2006-11-15 | 2011-11-22 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle |
| US8443927B2 (en) * | 2010-12-28 | 2013-05-21 | Kawasaki Jukogyo Kabushiki Kaisha | Exhaust device of vehicle and straddle-type four-wheeled vehicle provided with the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5599419A (en) * | 1979-01-18 | 1980-07-29 | Yamaha Motor Co Ltd | Exhaust device for motorcycle |
-
1980
- 1980-10-16 JP JP14365980A patent/JPS5770731A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5599419A (en) * | 1979-01-18 | 1980-07-29 | Yamaha Motor Co Ltd | Exhaust device for motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5770731A (en) | 1982-05-01 |
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