JPH0439831Y2 - - Google Patents
Info
- Publication number
- JPH0439831Y2 JPH0439831Y2 JP19390586U JP19390586U JPH0439831Y2 JP H0439831 Y2 JPH0439831 Y2 JP H0439831Y2 JP 19390586 U JP19390586 U JP 19390586U JP 19390586 U JP19390586 U JP 19390586U JP H0439831 Y2 JPH0439831 Y2 JP H0439831Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- recess
- air cleaner
- engine
- 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
Links
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 description 5
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、オートバイ用エンジンの吸気装置
に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an intake system for a motorcycle engine.
オートバイは、車体の前下部にエンジンを搭載
する。そして、シリンダーの後側にエアークリー
ナーを取付け、埃を取除いた吸気に気化器で燃料
を混入し、シリンダーに供給するようにしてい
る。又、高速型のオートバイでは、車体の前部を
流線形のカウリングで覆つて、風圧抵抗を減じる
ようにしている。カウリングを取付けると、エン
ジンはカウリングの内側になつて、十分な走行風
が通らず、熱気が隠れることになる。そして、エ
アークリーナーが、この熱気を吸入すると、空気
密度が薄いため、吸気効率が低下して、エンジン
の出力が低くなる不都合がある。このため、エア
ークリーナーの吸気口に連結した導風管を車体前
方に導いて開口し、熱気を吸入しないようにして
いる。例えば、実開昭52−108419号公報、実開昭
58−192121号公報参照。ところが、このように大
気温度の空気を吸入すると、気温が低いときは、
燃料の気化性がよくない不都合がある。
A motorcycle has an engine mounted in the front lower part of the vehicle body. An air cleaner is attached to the rear of the cylinder, and a carburetor mixes fuel into the dust-free intake air, which is then supplied to the cylinder. In addition, high-speed motorcycles have a streamlined cowling covering the front of the vehicle body to reduce wind resistance. When the cowling is installed, the engine will be inside the cowling, and there will be no sufficient air flow and the hot air will be hidden. When the air cleaner sucks in this hot air, the air density is low, so the intake efficiency decreases, resulting in a disadvantage that the output of the engine decreases. For this reason, the air guide pipe connected to the intake port of the air cleaner is guided toward the front of the vehicle body and opened to prevent hot air from being sucked in. For example, Utility Model Application Publication No. 52-108419,
See Publication No. 58-192121. However, when you inhale air at atmospheric temperature in this way, when the temperature is low,
There is a disadvantage that the vaporization of the fuel is not good.
この考案は、大気温度の空気とエンジン付近の
暖められた空気を適度に混合して、エンジンの吸
気温度に都合よくしてエアークリーナーに吸入で
きるオートバイ用エンジンの吸気装置を得ること
を目的とする。
The purpose of this invention is to obtain an air intake system for a motorcycle engine that can suitably mix air at ambient temperature and warm air near the engine to suit the engine's intake air temperature and be sucked into an air cleaner. .
以下、本考案を図面に示す実施例によつて説明
する。
The present invention will be explained below with reference to embodiments shown in the drawings.
エンジン１は、オートバイの車体２の前下部に
搭載される。そして、エンジン１のシリンダー３
の後側には、気化器４とエアークリーナー５が順
に連結してあり、エアークリーナー５で埃を取除
いた吸気に気化器４で燃料を混入してシリンダー
３に供給する。しかして本考案は、エアークリー
ナー５の上部に後側に向けて吸気口６を開口させ
る。一方、燃料タンク７の後側下側に上方に凹め
た凹部８を形成し、この凹部８にエアークリーナ
ー５の吸気口６部分を挿入する。又、車体前面の
カウリング９に開口した導風管１０の後端を、凹
部８の一側に導いて開口させる。そして、凹部８
の導風管１０の反対側に、攪拌板１１を立設す
る。攪拌板１１は、燃料タンク７の底に取付ける
か、エアークリーナー５の側面に取付ける。又、
エアークリーナー５の側方を覆うフレームカバー
に取付けてもよい。 An engine 1 is mounted in the front lower part of a motorcycle body 2. And cylinder 3 of engine 1
On the rear side, a carburetor 4 and an air cleaner 5 are connected in sequence, and the air cleaner 5 removes dust, the intake air is mixed with fuel in the carburetor 4, and the mixture is supplied to the cylinder 3. Accordingly, in the present invention, the air intake port 6 is opened toward the rear side at the top of the air cleaner 5. On the other hand, a recess 8 recessed upward is formed on the rear lower side of the fuel tank 7, and the intake port 6 of the air cleaner 5 is inserted into this recess 8. Further, the rear end of the air guide pipe 10 opened in the cowling 9 at the front of the vehicle body is guided to one side of the recess 8 and opened. And the recess 8
A stirring plate 11 is installed upright on the opposite side of the air guide pipe 10. The stirring plate 11 is attached to the bottom of the fuel tank 7 or to the side of the air cleaner 5. or,
It may be attached to a frame cover that covers the sides of the air cleaner 5.
オートバイを走行させると風圧を受け、導風管
１０に空気が流入し、導風管１０の後端から凹部
８内に外気が吹込む。一方、エンジン１のシリン
ダー３部分は、運転による発熱で高温になり、付
近の雰囲気温度が高くなつて立ち登り、凹部８内
に入る。これを導風管１０から吹出す大気で攪拌
板１１に当てるようにして旋回攪拌させる。こう
して、外気とシリンダー３付近で暖められた熱気
が混入したものになり、エアークリーナー５の吸
気口６に吸入される。吸気は適度の温度になり、
燃料の気化性もよく、吸気効率も高くできる。
When the motorcycle is run, wind pressure is applied, and air flows into the wind pipe 10, and outside air is blown into the recess 8 from the rear end of the wind pipe 10. On the other hand, the cylinder 3 portion of the engine 1 becomes high in temperature due to heat generated during operation, and the ambient temperature in the vicinity rises and enters the recess 8. This is swirled and stirred by hitting the stirring plate 11 with the air blown out from the air guide pipe 10. In this way, the outside air and the hot air warmed near the cylinder 3 become mixed and are sucked into the intake port 6 of the air cleaner 5. The intake air has a suitable temperature,
Fuel vaporization is good and intake efficiency is also high.
以上説明したように、この考案は、エンジンの
シリンダーの後側に設けるエアークリーナーの上
部に後方に向けた吸気口を設け、燃料タンクの後
部下側に上方に凹めた凹部を形成し、該凹部にエ
アークリーナーの吸気口部分を挿入すると共に、
車体前面に開口した導風管の後端を凹部の一側に
開口させ、凹部の他側に攪拌板を立設したので、
導風管から凹部内に吹出す外気と、シリンダー付
近から立ち登る暖かい空気が、凹部内で攪拌さ
れ、エアークリーナーの吸気口に吸入される。こ
のため、適度の温度の吸気で、燃料の気化性もよ
く、又、低過ぎる温度になることもなく、吸気効
率もよくて高出力が得られる。
As explained above, this invention provides a rearward-facing intake port at the top of the air cleaner installed at the rear of the engine cylinder, and forms an upwardly recessed part at the lower rear of the fuel tank. Insert the intake port of the air cleaner into the recess, and
The rear end of the air guide tube, which opens at the front of the car body, was opened on one side of the recess, and a stirring plate was placed upright on the other side of the recess.
Outside air blown into the recess from the wind guide pipe and warm air rising from near the cylinder are stirred within the recess and sucked into the air cleaner's intake port. Therefore, with intake air at an appropriate temperature, fuel vaporization is good, the temperature does not become too low, intake efficiency is good, and high output can be obtained.
図は本考案の一実施例を示し、第１図は燃料タ
ンクを一部縦断した側面図、第２図は平面図、第
３図は背面図である。
１……エンジン、３……シリンダー、５……エ
アークリーナー、６……吸気口、７……燃料タン
ク、８……凹部、１０……導風管、１１……攪拌
板。
The drawings show an embodiment of the present invention, in which Fig. 1 is a partially longitudinal side view of a fuel tank, Fig. 2 is a plan view, and Fig. 3 is a rear view. DESCRIPTION OF SYMBOLS 1... Engine, 3... Cylinder, 5... Air cleaner, 6... Intake port, 7... Fuel tank, 8... Recessed part, 10... Wind guide pipe, 11... Stirring plate.
Claims (1)
リーナーの上部に後方に向けた吸気口を設け、燃
料タンクの後部下側に上方に凹めた凹部を形成
し、該凹部にエアークリーナーの吸気口部分を挿
入すると共に、車体前面に開口した導風管の後端
を凹部の一側に開口させ、凹部の他側に攪拌板を
立設したことを特徴とするオートバイ用エンジン
の吸気装置。 A rearward-facing intake port is provided at the top of the air cleaner installed on the rear side of the engine cylinder, an upwardly recessed recess is formed at the lower rear of the fuel tank, and the air cleaner's intake port is inserted into the recess. An intake system for a motorcycle engine, characterized in that the rear end of the air guide pipe opened at the front of the vehicle body is opened on one side of the recess, and a stirring plate is provided upright on the other side of the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19390586U JPH0439831Y2 (en) | 1986-12-17 | 1986-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19390586U JPH0439831Y2 (en) | 1986-12-17 | 1986-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6398294U JPS6398294U (en) | 1988-06-25 |
| JPH0439831Y2 true JPH0439831Y2 (en) | 1992-09-17 |
Family
ID=31150371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19390586U Expired JPH0439831Y2 (en) | 1986-12-17 | 1986-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439831Y2 (en) |
-
1986
- 1986-12-17 JP JP19390586U patent/JPH0439831Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6398294U (en) | 1988-06-25 |
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