JPH0735156B2 - Intake distribution device for motorcycle carburetor - Google Patents
Intake distribution device for motorcycle carburetorInfo
- Publication number
- JPH0735156B2 JPH0735156B2 JP59247195A JP24719584A JPH0735156B2 JP H0735156 B2 JPH0735156 B2 JP H0735156B2 JP 59247195 A JP59247195 A JP 59247195A JP 24719584 A JP24719584 A JP 24719584A JP H0735156 B2 JPH0735156 B2 JP H0735156B2
- Authority
- JP
- Japan
- Prior art keywords
- traveling wind
- cowling
- carburetor
- intake
- traveling
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
- B62J17/02—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for shielding only the rider's front
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
- B62J17/10—Ventilation or air guiding devices forming part of fairings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、カウリングを有する自動二輪車において、
このカウリング内の各気化器の吸気量ができるだけ均等
となるようにした気化器への吸気分配装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a motorcycle having a cowling,
The present invention relates to a device for distributing intake air to carburetors so that the intake air amount of each carburetor in the cowling is as uniform as possible.
（従来の技術） 自動二輪車の走行時に、ライダーや車体フレームに支持
されたエンジンなどが走行風を直接受けると、その風圧
で快適な運転が阻害されたり、また、走行抵抗が過大に
なるおそれがある。(Prior Art) When the motorcycle or the engine supported by the vehicle body frame is directly subjected to the traveling wind while the motorcycle is traveling, the wind pressure may interfere with comfortable driving or may cause excessive traveling resistance. is there.
そこで、従来より、ライダーやエンジンの前面や両側面
を覆うようにカウリングが設けられる場合がある。Therefore, conventionally, a cowling may be provided so as to cover the front surface or both side surfaces of the rider or the engine.
また、上記のようにカウリングが設けられる場合には、
走行風を、上記カウリング内に案内する案内パイプを設
けて、この案内パイプにより、走行風を気化器群の各吸
気口に向って案内させるようにしたものがある（例え
ば、実開昭58−192121号公報）。Also, when the cowling is provided as described above,
There is a guide pipe for guiding the traveling wind into the cowling, and there is a guide pipe for guiding the traveling wind toward each of the intake ports of the carburetor group (for example, the actual opening 58- 192121).
（発明が解決しようとする問題点） ところで、上記従来構成では、案内パイプの上流端であ
る走行風取入口に近い気化器に、走行風がより多く偏流
するおそれがあり、この場合には、各気化器の吸入量が
不均等となり、つまり、各気筒の燃焼状態が不均等とな
って、エンジン性能の向上が阻害されるという問題を生
じる。(Problems to be Solved by the Invention) By the way, in the above-described conventional configuration, there is a possibility that a larger amount of traveling wind will flow to the carburetor near the traveling wind inlet that is the upstream end of the guide pipe. In this case, There arises a problem that the intake amount of each carburetor becomes uneven, that is, the combustion state of each cylinder becomes uneven, and improvement in engine performance is hindered.
また、上記従来構成では、カウリングの左右中央部にラ
ジエータが配設されているが、走行風がこのラジエータ
の前面に衝突して熱を与えられたとき、この温かい走行
風が、同上ラジエータで一旦跳ね返るなどして、上記走
行風取入口に入り込むと、充填効率の低下によりエンジ
ン性能が低下するおそれを生じる。Further, in the above-mentioned conventional configuration, the radiator is disposed in the left and right center portions of the cowling, but when the traveling wind collides with the front surface of the radiator and heat is given, the warm traveling wind is temporarily dissipated in the radiator. If the air flows into the traveling air intake port by bouncing or the like, engine performance may be deteriorated due to a decrease in filling efficiency.
そこで、これを防止するため、上記案内パイプの前端を
カウリングの前方にまで延出させて、ラジエータよりも
前側に走行風取入口を位置させている。しかし、このよ
うに案内パイプを延出させたことにより、構成が複雑と
なっている。Therefore, in order to prevent this, the front end of the guide pipe is extended to the front of the cowling, and the traveling air intake is located on the front side of the radiator. However, by extending the guide pipe in this manner, the structure is complicated.
（発明の目的） この発明は、上記のような事情に注目してなされたもの
で、各気化器の走行風の吸入量を互いに均等にさせ、か
つ、簡単な構成によってラジエータから熱を与えられて
いない所望の走行風を気化器群に対し取り入れてエンジ
ンの性能を向上させるようにすることを目的とする。(Object of the Invention) The present invention has been made by paying attention to the above circumstances, and makes the intake amounts of the traveling winds of the respective carburetors equal to each other, and the heat is applied from the radiator by a simple configuration. The objective is to improve the engine performance by introducing the desired traveling wind to the carburetor group.
（発明の構成） 上記目的を達成するためのこの発明の特徴とするところ
は、エンジンと気化器群とを前方から覆うカウリングを
設け、このカウリングの前部の近傍に上記気化器群を配
設し、同上カウリングの前部の平面断面を後方に向って
凹む円弧形状として、同上カウリングの前部の左右中央
部にラジエータを配設した場合において、上記カウリン
グの前部の側端部に走行風取入口を形成し、かつ、この
走行風取入口に流入した走行風を車幅方向に案内する案
内部材を設け、この案内部材の走行風排出口を、上記気
化器群の各吸気口の前方位置に向けて開放させた点にあ
る。(Structure of the Invention) A feature of the present invention for achieving the above object is to provide a cowling that covers an engine and a carburetor group from the front, and dispose the carburetor group near a front portion of the cowling. The same as above, when the front cross-section of the cowling has an arcuate shape that is recessed rearward, and a radiator is arranged in the center of the left and right of the front part of the cowling, the running wind is applied to the side end of the front part of the cowling. A guide member that forms an intake port and guides the traveling wind that has flowed into the traveling air intake port in the vehicle width direction is provided, and the traveling wind exhaust port of this guide member is located in front of each intake port of the carburetor group. The point is that it was opened toward the position.
（実施例） 以下、この発明の実施例を図面により説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
１は自動二輪車で、その車体フレーム２全部にはフロン
トフォーク３が支承される。このフロントフォーク３の
下部には前輪４が支承され、また、このフロントフォー
ク３の上部にはバーハンドル５が取り付けられる。ま
た、同上車体フレーム２の後部にはリヤアーム６が上下
揺動自在に枢支され、このリヤアーム６の揺動端に後輪
７が支承される。Reference numeral 1 is a motorcycle, and a front fork 3 is supported on the entire body frame 2 of the motorcycle. A front wheel 4 is supported on a lower portion of the front fork 3, and a bar handle 5 is attached to an upper portion of the front fork 3. A rear arm 6 is pivotally supported on the rear portion of the vehicle body frame 2 so as to be vertically swingable, and a rear wheel 7 is supported on a swing end of the rear arm 6.
上記車体フレーム２の枠内にはエンジン８が支持され、
このエンジン８は上記後輪７を駆動する。９は排気管、
10は燃料タンク、11はシートである。An engine 8 is supported in the frame of the vehicle body frame 2,
The engine 8 drives the rear wheels 7. 9 is an exhaust pipe,
10 is a fuel tank and 11 is a seat.
上記エンジン８はＶ型エンジンで、四つの気化器12を有
している。これら気化器12は車幅方向に沿って並ぶよう
に設けられ、これら気化器12の各吸気口13は車体の左右
中央部に配設されると共に、車体の前方に向って開口さ
せられている。The engine 8 is a V-type engine and has four carburetors 12. These carburetors 12 are provided so as to be lined up along the vehicle width direction, and the respective intake ports 13 of these carburetors 12 are arranged at the left and right central portions of the vehicle body and are opened toward the front of the vehicle body. .
14はカウリングで、このカウリング14は前記バーハンド
ル５の前面を覆うアッパカウル16と、上記カウリング14
の下部を構成して上記エンジン８と気化器12群とを前
方、および両側方から覆うアンダカウル17とで構成さ
れ、アッパカウル16にはウィンドシールド18が形成され
ている。また、上記アンダカウル17の側板には走行風を
このアンダカウル17内に流入させる走行風取入口20が形
成される。14 is a cowling, which includes an upper cowl 16 covering the front surface of the bar handle 5 and the cowling 14 described above.
And an under cowl 17 that covers the engine 8 and the carburetor 12 group from the front and both sides to form a lower portion of the upper cowl 16. A windshield 18 is formed on the upper cowl 16. Further, a traveling wind inlet 20 for allowing traveling wind to flow into the under cowl 17 is formed on a side plate of the under cowl 17.
上記走行風取入口20から各気化器12の吸気口13に向って
走行風を案内する樹脂製の案内部材21が設けられる。A resin guide member 21 for guiding the traveling wind from the traveling air intake 20 toward the intake 13 of each carburetor 12 is provided.
上記案内部材21はアンダカウル17の側板にビス22により
取り付けられる支持板23と、この支持板23に取り付けら
れるダクト24とで構成される。そして、上記アンダカウ
ル17の側板と支持板23との間に前方に向って開口する走
行風流入路26が形成され、この走行風流入路26は走行風
取入口20側に向って延びている。The guide member 21 includes a support plate 23 attached to the side plate of the under cowl 17 with a screw 22, and a duct 24 attached to the support plate 23. A traveling wind inflow passage 26 that opens forward is formed between the side plate of the under cowl 17 and the support plate 23, and the traveling wind inflow passage 26 extends toward the traveling wind intake port 20 side.
また、上記ダクト24は走行風取入口20を貫通するように
設けられる。そして、アンダカウル17の外部に位置する
ダクト24一端は走行風流入路26に対応するよう前方に向
って開口させられる。また、同上アンダカウル17の内部
に位置するダクト24他端は気化器12の吸気口13前方に位
置し、その端部には車幅方向内方に向って開口する走行
風排出口25が形成され、この走行風排出口25は多孔板27
で覆われている。側面視で、上記アンダカウル17の前部
近傍に前記気化器12群が配設されている。また、同上ア
ンダカウル17の前部の平面断面（第１図）は、後方に向
って凹む円弧形状とされており、このアンダカウル17の
前部の左右中央分に嵌め込み口が形成されて、この嵌め
込み口にラジエータ29が嵌め込まれている。Further, the duct 24 is provided so as to penetrate the traveling wind intake port 20. Then, one end of the duct 24 located outside the under cowl 17 is opened toward the front so as to correspond to the traveling wind inflow passage 26. Further, the other end of the duct 24 located inside the under cowl 17 is located in front of the intake port 13 of the carburetor 12, and a traveling wind exhaust port 25 that opens inward in the vehicle width direction is formed at the end thereof. , The traveling air outlet 25 is a perforated plate 27.
Is covered with. The carburetor 12 group is disposed in the vicinity of the front portion of the under cowl 17 in a side view. Further, the same as above, the plane cross-section (FIG. 1) of the front part of the under cowl 17 is formed into an arc shape which is recessed rearward, and a fitting port is formed in the front left and right center part of the under cowl 17, and this fitting A radiator 29 is fitted in the mouth.
前記走行風取入口20は、上記のように円弧形状とされた
アンダカウル17の前部の側端部に形成されている。ま
た、前記案内部材21は、上記走行風取入口20に流入した
走行風を車幅方向に案内するようその中途部がほぼ直角
に折り曲げられ、その下流端開口である前記走行風排出
口25は、車幅方向で、かつ、気化器12群の各吸気口13の
前方位置に向けて開放されている。The traveling air intake port 20 is formed at the side end portion of the front portion of the under cowl 17 having the arc shape as described above. The guide member 21 is bent at a substantially right angle in the middle so as to guide the traveling wind that has flowed into the traveling wind inlet 20 in the vehicle width direction, and the traveling wind outlet 25 that is the downstream end opening thereof is , In the vehicle width direction and toward the front position of each intake port 13 of the carburetor 12 group.
前記ラジエータ29の下縁と気化器12の吸気口13との間の
間隙を覆うように案内板30が設けられる。そして、この
案内板30は案内部材21からアンダカウル17内に流入した
走行風が上記吸気口13に向うようにこの走行風を案内す
る。また、その一方、この案内板30はラジエータ29を通
過して高温となった空気が気化器12の吸気口13に吸入さ
れることを阻止する。A guide plate 30 is provided so as to cover a gap between the lower edge of the radiator 29 and the intake port 13 of the carburetor 12. Then, the guide plate 30 guides the traveling wind so that the traveling wind flowing from the guide member 21 into the under cowl 17 is directed to the intake port 13. On the other hand, the guide plate 30 prevents the hot air passing through the radiator 29 from being sucked into the intake port 13 of the carburetor 12.
（発明の効果） この発明によれば、カウリングの前部に走行風取入口を
形成し、かつ、この走行風取入口に流入した走行風を車
幅方向に案内する案内部材を設け、この案内部材の走行
風排出口を、気化器群の各吸気口の前方位置に向けて開
放させてある。(Effect of the Invention) According to the present invention, a traveling wind inlet is formed in the front part of the cowling, and a guide member for guiding the traveling wind flowing into the traveling wind inlet in the vehicle width direction is provided. The traveling wind exhaust port of the member is opened toward the front position of each intake port of the carburetor group.
この場合、側面視で、カウリングの前部の近傍に上記気
化器群を配設してあるため、側面視で、上記走行風取入
口から気化器群の各吸気口に至る間は短いことから、上
記案内部材は、その走行風取入口側から走行風排出口に
至る間で、走行風をほぼ直角な急角度に折り曲げて案内
することとなる。In this case, since the carburetor group is arranged near the front part of the cowling in a side view, the distance from the traveling wind intake port to each intake port of the carburetor group is short in a side view. The guide member bends and guides the traveling wind at a substantially right angle between the traveling wind intake side and the traveling wind discharge port.
よって、上記案内部材に案内されて急角度に折り曲げら
れた走行風はその圧力損失が大きくなって、ここで大き
く減速されると共に、上記気化器群の各吸気口の前方位
置に向って乱流状に放出される。Therefore, the traveling wind guided by the guide member and bent at a steep angle has a large pressure loss, is greatly decelerated here, and is turbulent toward the front position of each intake port of the carburetor group. Is released in the form of.
この結果、走行風が気化器群の一部に向って偏流すると
いうことが防止されることから、各気筒の燃焼状態が互
いにほぼ均等となり、このため、エンジン性能の向上が
達成される。As a result, it is possible to prevent the traveling wind from drifting toward a part of the carburetor group, so that the combustion states of the respective cylinders are substantially equal to each other, and therefore, the engine performance is improved.
しかも、同上カウリングの前部の平面断面を後方に向っ
て凹む円弧形状として、同上カウリングの前部の左右中
央部にラジエータを配設した場合において、上記カウリ
ングの前部の側端部に走行風取入口を形成したため、上
記走行風取入口は同上ラジエータよりも前側に位置する
こととなる。よって、このラジエータの前面に衝突して
熱を与えられた走行風の一部が、ここで跳ね返るなどし
て上記走行風取入口に入り込もうとすることは防止され
る。Moreover, when the radiator is arranged in the left and right central portions of the front portion of the cowling as described above, when the plane cross-section of the front portion of the cowling is recessed rearward, the running wind is applied to the side end portion of the front portion of the cowling. Since the intake is formed, the traveling wind intake is located on the front side of the radiator. Therefore, it is possible to prevent a part of the traveling wind, which has collided with the front surface of the radiator and is given heat, from bouncing there and entering the traveling wind inlet.
この結果、上記走行風取入口からはラジエータによって
熱を与えられていない走行風が流入し、これにより、充
填効率からみて、エンジン性能の向上が達成される。As a result, the traveling wind, which has not been heated by the radiator, flows in from the traveling wind intake port, whereby the engine performance is improved in terms of charging efficiency.
そして、上記したようにラジエータに対し走行風取入口
を、より前側に位置させるという構成は、カウリングの
前部が円弧形状であって、その側端部が、左右中央部の
ラジエータ配設位置よりも前方に突出しているという形
状に着目し、上記側端部に走行風取入口を形成したこと
により得られたのである。Further, as described above, the configuration in which the traveling air intake is located further to the front side with respect to the radiator is such that the front portion of the cowling has an arc shape, and the side end portions thereof are closer to the radiator placement position in the left and right central portions. It was obtained by paying attention to the shape that also protrudes forward, and forming the traveling wind intake port at the side end portion.
よって、上記走行風取入口をラジエータよりも前側に位
置させようとして、従来では、カウリング前方に、案内
パイプを延出させているが、このような延出は不要であ
り、その分、所望の走行風を取り入れることが、簡単な
構成によって達成される。Therefore, in the past, the guide pipe is extended in front of the cowling in an attempt to position the traveling wind intake port on the front side of the radiator. Introducing the driving wind is achieved by a simple configuration.
図はこの発明の実施例を示し、第１図は走行風案内部材
の平面断面図、第２図は自動二輪車の全体側面図、第３
図は第２図の部分拡大断面図、第４図は同第２図のIV−
IV線矢視図、第５図は案内部材を拡大した側面図、第６
図は同案内部材の斜視図である。 １……自動二輪車、８……エンジン、12……気化器、13
……吸気口、14……カウリング、17……アンダカウル
（カウリング）20……走行風取入口、21……案内部材、
25……走行風排出口。1 shows an embodiment of the present invention, FIG. 1 is a plan sectional view of a traveling wind guide member, FIG. 2 is an overall side view of a motorcycle, and FIG.
Fig. 4 is a partially enlarged sectional view of Fig. 2, and Fig. 4 is IV- of Fig. 2.
IV line arrow view, FIG. 5 is an enlarged side view of the guide member, FIG.
The figure is a perspective view of the guide member. 1 ... Motorcycle, 8 ... Engine, 12 ... Vaporizer, 13
…… Intake port, 14 …… Cowling, 17 …… Under cowl (coiling) 20 …… Running wind intake, 21 …… Guide member,
25: Running air outlet.
Claims (1)
吸気口を車体の左右中央部に配設すると共に、同上各吸
気口をそれぞれ前方に向って開口させ、上記エンジンと
気化器群とを前方から覆うカウリングを設け、このカウ
リングの前部の近傍に上記気化器群を配設し、同上カウ
リングの前部の平面断面を後方に向って凹む円弧形状と
して、同上カウリングの前部の左右中央部にラジエータ
を配設した自動二輪車用気化器への吸気分配装置におい
て、 上記カウリングの前部の側端部に走行風取入口を形成
し、かつ、この走行風取入口に流入した走行風を車幅方
向に案内する案内部材を設け、この案内部材の走行風排
出口を、上記各吸気口の前方位置に向けて開放させた自
動二輪車用気化器への吸気分配装置。1. A plurality of carburetors included in a multi-cylinder engine are provided with respective intake ports at the left and right center portions of a vehicle body, and the respective intake ports are respectively opened forward to establish the engine and the carburetor group. A cowling that covers the front of the cowling is provided, and the carburetor group is arranged near the front of the cowling, and the front surface of the cowling has a circular arc shape that is recessed rearward. In an intake air distribution device for a motorcycle carburetor with a radiator disposed in the center, a traveling wind inlet is formed at the side end portion of the front portion of the cowling, and the traveling wind that has flowed into this traveling wind inlet. An intake distribution device for a carburetor for a motorcycle, in which a guide member for guiding the vehicle in the vehicle width direction is provided, and a traveling wind discharge port of the guide member is opened toward a position in front of each of the intake ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59247195A JPH0735156B2 (en) | 1984-11-21 | 1984-11-21 | Intake distribution device for motorcycle carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59247195A JPH0735156B2 (en) | 1984-11-21 | 1984-11-21 | Intake distribution device for motorcycle carburetor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61125921A JPS61125921A (en) | 1986-06-13 |
| JPH0735156B2 true JPH0735156B2 (en) | 1995-04-19 |
Family
ID=17159858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59247195A Expired - Fee Related JPH0735156B2 (en) | 1984-11-21 | 1984-11-21 | Intake distribution device for motorcycle carburetor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735156B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2668783B2 (en) * | 1987-07-08 | 1997-10-27 | ヤマハ発動機株式会社 | Motorcycle |
| JP2611271B2 (en) * | 1987-10-27 | 1997-05-21 | スズキ株式会社 | Air introduction device for motorcycle |
| JP3751077B2 (en) * | 1996-05-17 | 2006-03-01 | 本田技研工業株式会社 | Intake air intake structure for scooter type vehicles |
| JP5204048B2 (en) * | 2009-06-30 | 2013-06-05 | 川崎重工業株式会社 | Motorcycle |
| CN107284580B (en) | 2016-03-31 | 2020-01-14 | 本田技研工业株式会社 | Saddle-ride type vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848977U (en) * | 1981-09-29 | 1983-04-02 | 本田技研工業株式会社 | Motorcycle carburetor arrangement structure |
| JPS58192121U (en) * | 1982-06-16 | 1983-12-21 | スズキ株式会社 | motorcycle intake system |
| JPS6066594U (en) * | 1983-10-14 | 1985-05-11 | 本田技研工業株式会社 | Motorcycle fairing stay |
-
1984
- 1984-11-21 JP JP59247195A patent/JPH0735156B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61125921A (en) | 1986-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |