JPH0585731B2 - - Google Patents
Info
- Publication number
- JPH0585731B2 JPH0585731B2 JP32532489A JP32532489A JPH0585731B2 JP H0585731 B2 JPH0585731 B2 JP H0585731B2 JP 32532489 A JP32532489 A JP 32532489A JP 32532489 A JP32532489 A JP 32532489A JP H0585731 B2 JPH0585731 B2 JP H0585731B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cylinders
- engine
- space
- intake
- 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 - Lifetime
Links
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はクランク軸を共有する前方気筒及び後
方気筒がＶ型に配置され、夫々の気筒に吸気系を
接続した自動二輪車のＶ型エンジンに関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a V-type engine for motorcycles in which front cylinders and rear cylinders sharing a crankshaft are arranged in a V-shape, and an intake system is connected to each cylinder. .
（従来の技術）
Ｖ型エンジンを搭載する自動二輪車において、
気筒は夫々異なつた方向へ突設され、前方気筒及
び後方気筒と対向する気筒の各対向面に吸気口が
形成され、これらの吸気口に連なる気化器等の吸
気系が前方気筒と後方気筒に挟まれる空間に配設
されたものがある。(Prior art) In a motorcycle equipped with a V-type engine,
The cylinders protrude in different directions, and intake ports are formed on the opposing surfaces of the cylinders facing the front and rear cylinders, and the intake systems such as carburetors connected to these intake ports are connected to the front and rear cylinders. Some are placed in the space between them.
（発明が解決しようとする課題）
このように両気筒に挟まれる空間に吸気系を配
設することは、気筒間の空間が有効に利用できて
エンジンの小型化を図るものであるが、各気筒間
の空間はクランク軸方向及び対向する角度に制限
があり十分なスペースを確保することが困難で気
化器やエアクリーナ等の吸気系の管路がお互いに
干渉し合わないよう屈曲のない所定の長さで形成
するにはスペースレイアウト上種々の制約を受け
る。(Problem to be solved by the invention) By arranging the intake system in the space sandwiched between the two cylinders in this way, the space between the cylinders can be used effectively and the engine can be made smaller. The space between the cylinders is limited in the direction of the crankshaft and in the opposing angles, making it difficult to secure sufficient space.In order to prevent the intake system pipes such as the carburetor and air cleaner from interfering with each other, it is difficult to secure a sufficient space between the cylinders. There are various constraints on the space layout when forming the length.
本発明は前記事情に鑑み案出されたものであつ
て、目的とする処は、Ｖ型エンジンにおける吸気
系がお互いに干渉を受けることなく気化器やエア
クリーナ等の吸気系を容易に配設できる自動二輪
車のＶ型エンジンを提供するにある。 The present invention has been devised in view of the above-mentioned circumstances, and an object of the present invention is to easily arrange intake systems such as a carburetor and an air cleaner without interference between the intake systems of a V-type engine. To provide V-type engines for motorcycles.
（課題を解決するための手段）
本発明は係る課題を解決するためになされたも
ので、クランク軸を共有する前方気筒及び後方気
筒をＶ型に配置し、夫々の気筒に連なる吸気系を
備えた自動二輪車のＶ型エンジンにおいて、前方
気筒及び後方気筒は前記クランク軸の軸方向にオ
フセツトされ、前記夫々の吸気系は各気筒に挟ま
れた空間から外れた位置で、夫々の気筒と進行方
向に直列になるよう配設したことを特徴とする。(Means for Solving the Problems) The present invention has been made to solve the above problems, and includes front cylinders and rear cylinders that share a crankshaft, arranged in a V-shape, and an intake system connected to each cylinder. In a V-type engine for a motorcycle, the front cylinder and the rear cylinder are offset in the axial direction of the crankshaft, and each intake system is located away from the space between the cylinders, and is aligned with each cylinder in the direction of travel. It is characterized by being arranged in series with.
（作用）
本発明では、Ｖ型に前後方向に傾斜した前方気
筒及び後方気筒が前記クランク軸の軸方向にオフ
セツトされ各吸気系を両気筒間外の空間部分を利
用して夫々の気筒と吸気系とが進行方向に直列に
なるように配設される。(Function) In the present invention, the front cylinder and the rear cylinder, which are inclined in the longitudinal direction in a V-shape, are offset in the axial direction of the crankshaft, and each intake system is connected to each cylinder and the intake air by using the space outside between the two cylinders. The system is arranged in series in the direction of travel.
従つて、夫々の気化器やその他の吸気系の管路
を屈曲のない所定の長さで、それぞれ干渉し合わ
ないよう形成することができ、しかも気化器、エ
アクリーナの位置や形状が前記制限を受けない。 Therefore, each of the vaporizers and other intake system pipes can be formed to have a predetermined length without bending so that they do not interfere with each other, and the positions and shapes of the vaporizers and air cleaners do not meet the above-mentioned restrictions. I don't accept it.
（実施例）
以下本発明の好適一実施例を添付図面に従つて
詳細に説明する。(Embodiment) A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は自動二輪車の左側面図、第２図はエン
ジンの左側側面拡大図、第３図は前方気筒に沿つ
たエンジンの断面図、第４図は後方気筒に沿つた
エンジンの断面図、第５図はシリンダと吸気通路
等の関係を示すエンジンの展開図である。 Figure 1 is a left side view of the motorcycle, Figure 2 is an enlarged left side view of the engine, Figure 3 is a sectional view of the engine along the front cylinder, Figure 4 is a sectional view of the engine along the rear cylinder, FIG. 5 is a developed view of the engine showing the relationship between cylinders, intake passages, etc.
自動二輪車１の車体フレーム２は前端にヘツド
チユーブ３を備え、前輪５を操向自在に支持する
フロントフオーク４は前記ヘツドチユーブ３に取
付けられ、該フロントフオーク４の上方にはハン
ドル６を設ける。 A body frame 2 of a motorcycle 1 is provided with a head tube 3 at the front end, a front fork 4 that supports a front wheel 5 in a steerable manner is attached to the head tube 3, and a handle 6 is provided above the front fork 4.
後輪２１を支持するリヤフオーク２２は車体フ
レーム２のセンターチユーブ１２に軸支し、メイ
ンチユーブ１１には燃料タンク２３を跨設し、シ
ートチユーブ１３上にはシート２４を載置する。 A rear fork 22 supporting a rear wheel 21 is pivotally supported by a center tube 12 of a vehicle body frame 2, a fuel tank 23 is disposed across the main tube 11, and a seat 24 is placed on the seat tube 13.
エンジン３１は前記車体フレーム２の各チユー
ブで囲まれる空間に搭載され、実施例においては
クランク軸横置きで前後二気筒ずつ備えたＶ型の
二サイクルエンジンで、チエーン駆動によりエン
ジン出力を後輪２１へ伝達する。 The engine 31 is mounted in a space surrounded by each tube of the vehicle body frame 2, and in this embodiment is a V-type two-stroke engine with a horizontal crankshaft and two cylinders in the front and rear. Communicate to.
クランクケース３４に支持されたクランク軸４
２は車体の左右方向に配置され、このクランク軸
４２を共有するる前方気筒３２，３２は車体の斜
め前方へ向けて突設し、後方気筒３３，３３は斜
め上方へ向けて突設し、お互いにＶ型を形成し配
設され、後方気筒の後側のクランクケース３４上
方に比較的広い空間が形成される。その空間に
は、夫々の気化器５３が夫々の気筒と進行方向に
直列になるよう集中して配設される。 Crankshaft 4 supported by crankcase 34
2 is arranged in the left-right direction of the vehicle body, the front cylinders 32, 32 that share this crankshaft 42 are provided to protrude diagonally forward of the vehicle body, and the rear cylinders 33, 33 are provided to protrude diagonally upward, They are arranged to form a V-shape with each other, and a relatively wide space is formed above the crankcase 34 on the rear side of the rear cylinder. In this space, the respective carburetors 53 are arranged in a concentrated manner so as to be in series with the respective cylinders in the traveling direction.
前記クランクケース３４にはシリンダ３５に対
応して夫々クランク室４１を画成し、各クランク
室４１を挿通してクランク軸４２を設け、クラン
クピン４３と左右のクランクウエブ４４，４４は
各クランク室４１に収納せしめ、ピストン３７と
前記クランクピン４３とをコンロツド４５で連結
する。 Crank chambers 41 are defined in the crank case 34 corresponding to the cylinders 35, and a crank shaft 42 is inserted through each crank chamber 41, and a crank pin 43 and left and right crank webs 44, 44 are connected to each crank chamber. 41, and the piston 37 and the crank pin 43 are connected by a connecting rod 45.
シリンダブロツク３６及びクランクケース３４
には第５図に示すように掃気通路４６，４６を形
成し、前方気筒３２のシリンダブロツク３６及び
後方気筒３３のシリンダブロツク３６には第３図
及び第４図に示すように排気通路４７を形成す
る。 Cylinder block 36 and crankcase 34
Scavenging passages 46, 46 are formed as shown in FIG. 5, and exhaust passages 47 are formed in the cylinder block 36 of the front cylinder 32 and the cylinder block 36 of the rear cylinder 33, as shown in FIGS. 3 and 4. Form.
更に前記クランクケース３４には吸気通路５１
を設ける。 Furthermore, an intake passage 51 is provided in the crankcase 34.
will be established.
前記吸気通路５１は第３図乃至第５図に示すよ
うに後方気筒３３の後側で斜め後方へ向けて開口
され、該後端開口部５２に気化器５３を取付け
る。 As shown in FIGS. 3 to 5, the intake passage 51 opens diagonally rearward at the rear side of the rear cylinder 33, and a carburetor 53 is attached to the rear end opening 52.
本発明は前記のように構成するので、前方気筒
３２，３２及び後方気筒３３，３３に接続する気
化器５３は夫々進行方向に直列に、全て後方気筒
３３の後側に集中して配設でき、また吸気系の管
路もお互い干渉し合うことなく形成することがで
きる。従つて走行速度の違いによる走向風圧の影
響を受けにくく、従来の如く各気筒間に気化器を
配設する場合に較べスペースレイアウト上極めて
有利となり、また多連型気化器を使用してスペー
ス効率を高めることもできる。 Since the present invention is configured as described above, the carburetors 53 connected to the front cylinders 32, 32 and the rear cylinders 33, 33 can be arranged in series in the traveling direction, and all concentrated on the rear side of the rear cylinder 33. Moreover, the pipes of the intake system can also be formed without interfering with each other. Therefore, it is less susceptible to the effects of wind pressure in the direction and direction due to differences in running speed, and is extremely advantageous in terms of space layout compared to the conventional arrangement of carburetors between each cylinder.In addition, the use of multiple carburetors improves space efficiency. It is also possible to increase
また、エアクリーナ６１を取付ける場合も第１
図に仮想線で示す如く各気化器５３の後方に容易
に配設できエアクリーナ６１は一つで足り、エア
クリーナ６１と各気化器５３との接続も簡易且つ
均一になし得、各気筒３２，３２，３３，３３に
おける出力を均一化し、エンジン性能を高めるこ
とができる。 Also, when installing the air cleaner 61, the first
As shown by the imaginary lines in the figure, it can be easily disposed behind each carburetor 53, only one air cleaner 61 is required, and the connection between the air cleaner 61 and each carburetor 53 can be made simple and uniform, and each cylinder 32, 32 , 33, 33 can be made uniform, and engine performance can be improved.
尚、実施例においてはシリンダ３５と気化器５
３とを吸入通路５１及びクランク室４１を介して
連通する場合について説明した、本発明はシリン
ダ３５と気化器５３を直接吸入管等で連結する場
合も同様に適用でき、夫々の吸気系の管路を屈曲
のない所定の長さでお互い干渉しないよう形成す
ることができる。 In addition, in the embodiment, the cylinder 35 and the carburetor 5
The present invention, which has been described with reference to the case where the cylinder 35 and the carburetor 53 are communicated with each other via the suction passage 51 and the crank chamber 41, can be similarly applied to the case where the cylinder 35 and the carburetor 53 are directly connected through the suction pipe, etc. The paths can be formed to have a predetermined length without bending so as not to interfere with each other.
また実施例においては四気筒エンジンについて
説明したが、二気筒以上のエンジンも同様に適用
できるものである。 Further, in the embodiment, a four-cylinder engine has been described, but an engine with two or more cylinders can be similarly applied.
（発明の効果）
以上の説明で明らかなように、本発明によれ
ば、Ｖ型に配置された前方気筒及び後方気筒をク
ランク軸の軸方向にオフセツトしたクランクケー
ス廻りに形成された比較的広い空間を有効的に利
用して、気化器、エアクリーナ等の吸気系がそれ
ぞれ干渉せず夫々の気筒と直列に配設でき、しか
も吸気系の位置や寸法の制限を受けることなくス
ペース効率を高めることができる。(Effects of the Invention) As is clear from the above description, according to the present invention, a relatively wide cylinder is formed around a crankcase in which front cylinders and rear cylinders arranged in a V-shape are offset in the axial direction of the crankshaft. To effectively utilize space so that intake systems such as a carburetor and air cleaner can be arranged in series with each cylinder without interfering with each other, and to increase space efficiency without being restricted by the position or dimensions of the intake system. I can do it.
第１図は自動二輪車の左側面図、第２図はエン
ジンの左側面拡大図、第３図は前方気筒に沿つた
エンジンの断面図、第４図は後方気筒に沿つたエ
ンジンの断面図、第５図はシリンダと吸気通路等
の関係を示すエンジンの展開図である。
尚図面中３１はエンジン、３２は前方気筒、３
３は後方気筒、３４はクランクケース、４３はク
ランク軸、３５はシリンダ、５３は気化器であ
る。
Figure 1 is a left side view of the motorcycle, Figure 2 is an enlarged left side view of the engine, Figure 3 is a sectional view of the engine along the front cylinder, Figure 4 is a sectional view of the engine along the rear cylinder, FIG. 5 is a developed view of the engine showing the relationship between cylinders, intake passages, etc. In the drawing, 31 is the engine, 32 is the front cylinder, and 3
3 is a rear cylinder, 34 is a crankcase, 43 is a crankshaft, 35 is a cylinder, and 53 is a carburetor.
Claims (1)
をＶ型に配置し、夫々の気筒に対応する吸気開口
部に連なる吸気系を備えた自動二輪車のＶ型エン
ジンにおいて、前記前方気筒及び後方気筒を前記
クランク軸の軸方向にオフセツトし、前記夫々の
吸気系は両気筒に挟まれた空間から外れた位置
で、夫々の気筒と進行方向に直列になるよう配設
したことを特徴とする自動二輪車のＶ型エンジ
ン。1. In a V-type engine for a motorcycle, in which a front cylinder and a rear cylinder sharing a crankshaft are arranged in a V-shape, and an intake system is connected to an intake opening corresponding to each cylinder, the front cylinder and the rear cylinder are arranged in a V-shape. A motorcycle characterized in that the intake system is offset in the axial direction of the crankshaft, and each intake system is disposed in a position away from the space between the two cylinders and in series with each cylinder in the traveling direction. V type engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32532489A JPH0388912A (en) | 1989-12-15 | 1989-12-15 | V-form engine of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32532489A JPH0388912A (en) | 1989-12-15 | 1989-12-15 | V-form engine of motorcycle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16369283A Division JPS6056123A (en) | 1983-09-06 | 1983-09-06 | Intake-air device in motor-cycle installed with v-type engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0388912A JPH0388912A (en) | 1991-04-15 |
| JPH0585731B2 true JPH0585731B2 (en) | 1993-12-08 |
Family
ID=18175548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32532489A Granted JPH0388912A (en) | 1989-12-15 | 1989-12-15 | V-form engine of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0388912A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4732802B2 (en) * | 2005-05-31 | 2011-07-27 | 芦森工業株式会社 | Sunshade device for vehicle |
| JP2008074276A (en) * | 2006-09-22 | 2008-04-03 | Toyota Industries Corp | Vehicular blind system |
-
1989
- 1989-12-15 JP JP32532489A patent/JPH0388912A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0388912A (en) | 1991-04-15 |
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