JPS62113675A - Motorcycle - Google Patents
MotorcycleInfo
- Publication number
- JPS62113675A JPS62113675A JP25221085A JP25221085A JPS62113675A JP S62113675 A JPS62113675 A JP S62113675A JP 25221085 A JP25221085 A JP 25221085A JP 25221085 A JP25221085 A JP 25221085A JP S62113675 A JPS62113675 A JP S62113675A
- Authority
- JP
- Japan
- Prior art keywords
- motorcycle
- body frame
- engine
- type engine
- arrangement structure
- 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.)
- Pending
Links
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
- Exhaust Silencers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、自動二輪車におけるＶ形エンジンの配置構
造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an arrangement structure of a V-type engine in a motorcycle.
第２図は、従来のＶ形エンジンの配置構造を示す自動二
輪車１の要部概念図で、特に車両の進行方向（矢印Ａ）
に対しクランク軸を直角に配置した、いわゆる横置形の
Ｖ形エンジンを搭載したものを示している。FIG. 2 is a conceptual diagram of the main parts of the motorcycle 1 showing the arrangement structure of a conventional V-type engine, especially in the direction of travel of the vehicle (arrow A).
This shows an engine equipped with a so-called horizontally mounted V-shaped engine, with the crankshaft placed at right angles to the engine.
この自動二輪車１では、車体フレーム２に図示せぬ懸架
手段を介し、所定の挟み角（θ）を有する２サイクルの
２気筒Ｖ形エンジン３が支承されており、７字形に配置
されたシリンダブロック４゜５のうち、後方（上方）に
配置されたシリンダブロック５は後方（上方）排気構造
となっている。In this motorcycle 1, a two-stroke, two-cylinder V-type engine 3 having a predetermined included angle (θ) is supported on a body frame 2 via a suspension means (not shown), and cylinder blocks are arranged in a figure 7 shape. The cylinder block 5 located at the rear (upper side) of the cylinder block 5 has a rear (upper) exhaust structure.
一方、上述したＶ形エンジン３は、シリンダブロック４
が車体の接地面Ｈと略平行、即ち挟み角（θ）の２等分
線Ｓが、接地面Ｈと交わるように車体フレーム２に配置
されている。On the other hand, the V-type engine 3 described above has a cylinder block 4
is arranged on the vehicle body frame 2 so that it is substantially parallel to the ground plane H of the vehicle body, that is, the bisector S of the included angle (θ) intersects with the ground plane H.
ところで、上述した従来のＶ形エンジンの配置構造によ
ると、Ｖ形エンジン３の排気’ＩＦ６ 、７のうちの少
なくともシリンダブロック４に接続されい。したがって
排気管６はその途中に折り曲げ部６ａが形成され、その
部分で排気抵抗が増大し、排気効率が低下する問題点が
あった。By the way, according to the arrangement structure of the conventional V-type engine described above, at least the exhaust IFs 6 and 7 of the V-type engine 3 are not connected to the cylinder block 4. Therefore, the exhaust pipe 6 has a bent portion 6a in the middle thereof, which causes an increase in exhaust resistance and a problem in that exhaust efficiency decreases.
また、自動二輪車では加速時に生ずるフロント荷重の減
少を防止し、操縦安定性の向上を図るためには、エンジ
ンを出来るだけ車体フレームの前方へ配置し、車両の重
心を進行方向側へ移動させることが好ましい。しかし、
第２図に示す従来の配置構造によると、前車輪８にシリ
ンダブロック４のシリンダヘッド４ｂに装着された点火
栓９が突当るため、■形エンジン３を車体フレーム２の
さらに前方へ配置することが出来なかった。In addition, in order to prevent a decrease in the front load that occurs during acceleration and improve handling stability in motorcycles, it is necessary to place the engine as far forward as possible in the body frame and move the center of gravity of the vehicle toward the direction of travel. is preferred. but,
According to the conventional arrangement structure shown in FIG. 2, the ignition plug 9 attached to the cylinder head 4b of the cylinder block 4 hits the front wheel 8, so the ■-shaped engine 3 cannot be arranged further forward of the vehicle body frame 2. I couldn't do it.
この発明の目的は上述した問題点に鑑み、排気効率と、
操縦安定性の向上を図ったＶ形エンジン搭載の自動二輪
車を提供することにある。In view of the above-mentioned problems, the purpose of this invention is to improve exhaust efficiency,
An object of the present invention is to provide a motorcycle equipped with a V-type engine with improved handling stability.
この発明では、車両の進行方向に対しクランク軸を直角
に配置してＶ形エンジンを車体フレームへ搭載する自動
二輪車において、前記■形エンジンを、該Ｖ形エンジン
の挟み角の２等分線が車両の接地面とほぼ平行になるよ
うに前記車体フレームへ配置している。In this invention, in a motorcycle in which a V-shaped engine is mounted on a body frame with a crankshaft arranged at right angles to the traveling direction of the vehicle, the above-mentioned ■-shaped engine is arranged such that the bisector of the included angle of the V-shaped engine is It is arranged on the vehicle body frame so as to be substantially parallel to the ground contact surface of the vehicle.
〔実施例〕
以下、本発明に係るＶ形エンジンの配置構造の一実施例
を詳述する。[Embodiment] Hereinafter, an embodiment of the arrangement structure of a V-type engine according to the present invention will be described in detail.
第１図は、本発明に係るＶ形エンジンの配置構造を示す
自動二輪車１０の要部概念図で、第２図と同一部分を同
一符号で示す。FIG. 1 is a conceptual diagram of main parts of a motorcycle 10 showing the arrangement structure of a V-type engine according to the present invention, and the same parts as in FIG. 2 are designated by the same reference numerals.
この自動二輪車１０では、■形エンジン３が、その挾み
角（θ）の２等分線Ｓが、接地面Ｈとほぼ平行になるよ
うに車体フレーム２に配置されている。なお、前記Ｖ形
エンジン３は図示せぬ懸架手段によって車体フレーム２
に位置決め支承されている。In this motorcycle 10, the ■-shaped engine 3 is arranged on the body frame 2 so that the bisector S of the angle (θ) thereof is substantially parallel to the ground plane H. The V-type engine 3 is attached to the vehicle body frame 2 by a suspension means (not shown).
It is supported for positioning.
上述した、Ｖ形エンジン３の配置構造によると、７字形
に配置された各シリンダブロック４，５のエキゾースト
ポート４ａ、５ａは、双方とも車体フレーム２の後方へ
向けて配置されることとなり、このため各エキゾースト
ポート４ａ、５ａへは、曲率半径の太きい、はぼ直線形
状の排気管１１゜１２を装着することができる。また、
上述したＶ形エンジン３の配置構造によると、各シリン
ダブロック４．５のシリンダヘッド４ｂ、５ｂと、前車
輪８との間隔が大きくなり、このため第１図に示す如く
、Ｖ形エンジン３を前車輪８と接触しない程度であって
、可及的に車体フレーム２の前方（矢印Ａ）へ移動する
ことが可能となる。また、上述したＶ形エンジン３の配
置構造によると、Ｖ形エンジン３の各シリンダブロック
４．５が車体フレーム２の下方へ移動するため、自動二
輪車１０の重心は下方へ移動することとなる。According to the arrangement structure of the V-shaped engine 3 described above, the exhaust ports 4a and 5a of each cylinder block 4 and 5 arranged in a figure 7 shape are both arranged toward the rear of the vehicle body frame 2. Therefore, substantially straight exhaust pipes 11 and 12 having a large radius of curvature can be attached to each of the exhaust ports 4a and 5a. Also,
According to the arrangement structure of the V-type engine 3 described above, the distance between the cylinder heads 4b, 5b of each cylinder block 4.5 and the front wheel 8 becomes large, and therefore, as shown in FIG. It is possible to move as far forward of the vehicle body frame 2 (arrow A) as possible without contacting the front wheels 8. Further, according to the above-described arrangement structure of the V-type engine 3, each cylinder block 4.5 of the V-type engine 3 moves below the vehicle body frame 2, so that the center of gravity of the motorcycle 10 moves downward.
なお、上記実施例では、２サイクル２気筒のＶ形エンジ
ン３を車体フレーム２に搭載する場合について述べたが
、この発明は上記実施例に限定されることなく、４サイ
クルあるいは２気筒以上の多気筒のＶ形エンジンに適用
しても良い。In the above embodiment, a case has been described in which a 2-cycle, 2-cylinder V-type engine 3 is mounted on the vehicle body frame 2, but the present invention is not limited to the above-mentioned embodiment, and the present invention is not limited to the above-mentioned embodiment. It may also be applied to a V-cylinder engine.
この発明では、排気抵抗の少ない直線形状の排′気管を
装着することが出来、このため排気効率を向上させるこ
とが出来る。また、Ｖ形エンジンを車体フレームのより
前方へ配置することが可能で、このため自動二輪車の重
心を車体フレームのより前方へ移動し、操縦安定性の向
上を図ることが出来る。In this invention, a linear exhaust pipe with low exhaust resistance can be installed, and therefore exhaust efficiency can be improved. Further, the V-type engine can be placed further forward of the body frame, and therefore the center of gravity of the motorcycle can be moved further forward of the body frame, thereby improving handling stability.
第１図は本発明に係るＶ形エンジンの配置構造を示す自
動二輪車の要部概念図、第２図は従来のＶ形エンジンの
配置構造を示す自動二輪車の要部概念図である。
２・・・車体フレーム、３・・・Ｖ形エンジン、１０・
・自動二輪車、θ・・・挟み角、Ｈ・・・接地面、Ｓ・
・２等分線。FIG. 1 is a conceptual diagram of main parts of a motorcycle showing the arrangement structure of a V-type engine according to the present invention, and FIG. 2 is a conceptual diagram of main parts of a motorcycle showing the arrangement structure of a conventional V-type engine. 2...Vehicle frame, 3...V-type engine, 10.
・Motorcycle, θ...include angle, H...ground contact surface, S・
・Bisector.
Claims (1)
エンジンを車体フレームへ搭載する自動二輪車において
、前記Ｖ形エンジンを、該Ｖ形エンジンの挟み角の２等
分線が車両の接地面とほぼ平行になるように前記車体フ
レームへ配置したことを特徴とする自動二輪車。In a motorcycle in which a V-shaped engine is mounted on a body frame with a crankshaft arranged at right angles to the direction of travel of the vehicle, the V-shaped engine is arranged such that the bisector of the angle of the V-shaped engine is the ground plane of the vehicle. A motorcycle characterized in that the motorcycle is arranged on the body frame so as to be substantially parallel to the body frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25221085A JPS62113675A (en) | 1985-11-11 | 1985-11-11 | Motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25221085A JPS62113675A (en) | 1985-11-11 | 1985-11-11 | Motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62113675A true JPS62113675A (en) | 1987-05-25 |
Family
ID=17234032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25221085A Pending JPS62113675A (en) | 1985-11-11 | 1985-11-11 | Motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01102423U (en) * | 1987-12-25 | 1989-07-11 |
-
1985
- 1985-11-11 JP JP25221085A patent/JPS62113675A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01102423U (en) * | 1987-12-25 | 1989-07-11 |
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