JPS60116850A - Intake apparatus for engine - Google Patents
Intake apparatus for engineInfo
- Publication number
- JPS60116850A JPS60116850A JP58225180A JP22518083A JPS60116850A JP S60116850 A JPS60116850 A JP S60116850A JP 58225180 A JP58225180 A JP 58225180A JP 22518083 A JP22518083 A JP 22518083A JP S60116850 A JPS60116850 A JP S60116850A
- Authority
- JP
- Japan
- Prior art keywords
- intake
- carburetor
- engine
- intake passage
- sectional area
- 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
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
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/005—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes
- F02B27/006—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes of intake runners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10026—Plenum chambers
- F02M35/10039—Intake ducts situated partly within or on the plenum chamber housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
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吸気装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an air intake device for a motorcycle.
（従来技術）
一般に、自動ニー輪中では、その車体にエンジンが支持
されると共に、エンジン」一方で同」二車体に燃料タン
クが支持される。(Prior Art) Generally, in a kneeling automatic vehicle, an engine is supported by the vehicle body, and a fuel tank is supported by the engine and the vehicle body.
Ｌ記構成において、エンジンと燃料タンクとの間の空１
１４ノを有効利Ｉｎするために、この空ｎｌＩにエンジ
ンに連結される気化器と、この気化器に吸気管を介して
連結されるエアクリーナとが設けられる場合がある（特
開昭５５−４６００７号公報）。In the L configuration, the air 1 between the engine and the fuel tank
In order to make effective use of the air flow, a carburetor connected to the engine and an air cleaner connected to the carburetor via an intake pipe may be installed in the air (Japanese Patent Laid-Open No. 55-46007). Publication No.).
ところでこのように構成した場合、」−１配室間は限ら
れたものであるため、吸気管の／ｒｔ＋長を十分に採る
ことができず、よって、吸入効率の点で、次のような不
都合がある。By the way, with this configuration, since the space between the -1 chambers is limited, it is not possible to take a sufficient /rt+ length of the intake pipe, and therefore, in terms of intake efficiency, the following It's inconvenient.
ここで吸入効率とは、エンジンへの吸気聞、ノ供給状Ｉ
出を示し、この吸入効率を高くすれば出方が向上する。Here, intake efficiency refers to the intake air to the engine, the supply state I
If the inhalation efficiency is increased, the amount of inhalation will be improved.
そして、この吸入効率は、吸気管の通路抵抗が少なく、
かつ、下記の等価管長りが実験にのある適止値を採ると
きに最大値となることが知られてむ（る。This intake efficiency is due to the low passage resistance of the intake pipe.
Moreover, it is known that the equivalent pipe length below reaches its maximum value when a certain appropriate value is taken for the experiment.
この等価管長りは、
Ｌ＝「ＴＴＴ７τ
で示され、■はシリンダの体積、文は吸気路の長さ、Ａ
は吸気路の断面積である。This equivalent pipe length is shown as L = "TTT7τ, where ■ is the volume of the cylinder, " is the length of the intake path, and A
is the cross-sectional area of the intake passage.
そして、上記従来構成では」二記吸気路の長さ文を１・
分な長さの適＋ｌ：ｌ＋ｒｉに採れないことから、吸入
効率の向上が阻まれている。In the above conventional configuration, the length of the air intake path is 1.
Improving the inhalation efficiency is hindered because it is not possible to obtain an appropriate length of +l:l+ri.
（発明の目的）
この発明は、」二記のような事情に注目してなされたも
ので、吸気路が短くなる場合でも、吸気抵抗を増加させ
ることなく、かつ、等価管長を十分な長さに採り、吸入
効イｉを向上させ、かつ、気化器のベンチュリ一部にお
ける燃料の噴出を適正に保つようにすることを目的とす
る。(Objective of the Invention) This invention was made with attention to the circumstances as described in 2. Even when the intake path is shortened, it is possible to maintain the equivalent pipe length to a sufficient length without increasing the intake resistance. It is an object of the present invention to improve the suction efficiency i and to maintain proper fuel ejection from a venturi portion of the carburetor.
（発明の構成）
に記［１的を達成するためのこの発明の特徴とするとこ
ろは、吸気路の断面積が気化器の全開時におけるベンチ
ュリ一部の断面積にほぼ等しくなるようにこの吸気路が
形成された点にある。(Structure of the Invention) [The feature of this invention to achieve the first objective is that the intake passage is arranged so that the cross-sectional area of the intake passage is approximately equal to the cross-sectional area of a portion of the venturi when the carburetor is fully opened. It is at the point where the road was formed.
（実施例） 以下、この発明の実施例を図面により説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図から第３図において、ｌは自動二輪車で、その車
体フレーム２にはＶ型開気筒エンジン３が支持され、こ
のエンジン３の」二方で同一１−車体フレーム２に燃料
タンク４が支持されている。６は前輪、７は後輪、８は
シートである。In FIGS. 1 to 3, 1 is a motorcycle, and a V-type open cylinder engine 3 is supported on a body frame 2 of the motorcycle. Supported. 6 is a front wheel, 7 is a rear wheel, and 8 is a seat.
上記エンジン３の各気筒９には気化器１１がそれぞれ連
結され、これら気化器１１は前後気筒９．９間に配置さ
れる。また、これら気化器１１」一部にはエアクリーナ
１２が連結される。A carburetor 11 is connected to each cylinder 9 of the engine 3, and these carburetors 11 are arranged between the front and rear cylinders 9.9. Further, an air cleaner 12 is connected to a portion of these carburetors 11.
上記気化器１１は可変ベンチュリ式とされ、そのベンチ
ュリ一部１３は、エアクリーナ１２に連通ずる通気孔１
４の内周面と、この通気孔１４を開閉するピストン１５
とで形成される。そして、図示しないが、吸入空気量に
応じて変化する通気孔１４内の吸気負圧によってピスト
ン１５が通気孔１４内に対して出没自在とされる。また
、ベンチュリ一部１３における通気孔１４内周面には燃
ネ；］噴出口１６が開口し、ピストン１５に突設された
メータリングニードル１５ａがこの燃ネ゛］噴出１１１
６内に嵌め込まれている。そして、ピストン１５の動作
でメータリングニードル１５ａが燃才゛ｌ噴出Ｌ＋ １
６の開度を調整し、吸入空気量に応じた燃料がこの燃料
噴出＋−＋ １６から通気孔１４内に噴出せしめられる
。また、ごのベンチュリ一部１３のド流側には通気孔１
４を開閉させる絞り弁１７が設けられる。なお、２０は
エアブリード用インレントで、図示しないが燃料噴出口
１６の奥部に連通している。The carburetor 11 is of a variable venturi type, and a portion 13 of the venturi is connected to a vent hole 1 communicating with the air cleaner 12.
4 and a piston 15 that opens and closes this vent hole 14.
It is formed by Although not shown, the piston 15 is allowed to move in and out of the vent hole 14 due to the intake negative pressure in the vent hole 14, which changes depending on the amount of intake air. Further, a fuel injection port 16 is opened in the inner circumferential surface of the vent hole 14 in the venturi part 13, and a metering needle 15a protruding from the piston 15 emits this fuel.
It is fitted in 6. Then, due to the operation of the piston 15, the metering needle 15a causes the fuel oil to be ejected L+1.
By adjusting the opening degree of the fuel injection valve 6, fuel corresponding to the amount of intake air is ejected from the fuel injection port 16 into the vent hole 14. In addition, there is a ventilation hole 1 on the downstream side of the venturi part 13.
A throttle valve 17 for opening and closing 4 is provided. Note that 20 is an air bleed inlet, which is not shown but communicates with the inner part of the fuel injection port 16.
」−記エアクリーナ１２は、クリーナケース１８と、こ
のクリーナケース１８に内蔵されエンジン３への空気を
ろ過するエレメント１９とを有している。また、このク
リーナケース１８は、上方に開１−１するｆＪＳ１ケー
ス２１と、この第１ケース２１の１一部間１１を覆う第
２ケース２２とを有している。これら両ケース２１．２
２間には仕切板２３が介在され、第１ケース２１の底板
２１ａと仕切４１１（２３との間に１．記エレメント１
９が挟まれている。一方、Ｌ： ｒｉｄ第１ケース２１
の底板２１ａには外気を吸入する吸気１１２４が形成さ
れ、仕切板２３にはエレメント１９でろ過された空気を
第１ケース２１内から第２ケース２２内へ流入させる連
通孔２６が形成される。The air cleaner 12 includes a cleaner case 18 and an element 19 that is built into the cleaner case 18 and filters air to the engine 3. Further, the cleaner case 18 includes an fJS1 case 21 that opens 1-1 upward, and a second case 22 that covers a portion 11 of the first case 21. Both cases 21.2
A partition plate 23 is interposed between the bottom plate 21a of the first case 21 and the partition 411 (23).
9 is sandwiched. On the other hand, L: rid 1st case 21
An intake 1124 for sucking outside air is formed in the bottom plate 21a, and a communication hole 26 is formed in the partition plate 23 for allowing air filtered by the element 19 to flow from the first case 21 into the second case 22.
」二記第２ケース２２内と気化器１１とを連結する吸気
管２７が設けられる。この吸気管２７の内孔が吸気路２
８とされ、この吸気路２８と気化器１１の通気孔１４と
は共に断面円形で同軸−にに形成される。また、この吸
気路２８の断面積が、気化器ｉｔの全開時におけるベン
チュリ一部１３の断面積にほぼ等しくなるようにこの吸
気路２８が形成される。上記吸気管２７の上端は仕切板
２３に溶接され、下端は第１ケース２１の底板２１ａに
形成された貫通孔２１ｂを貫通して気化器１１に連結さ
れる。この貫通孔２１ｂと気化器１１との間にはゴム製
の弾性筒状ブラダ、、 ｌ−２９が介在され、このブラ
ダ’７ ＋−２９の一端が貫通孔２１． ｂ内周面に嵌
め合わされ、他端が気化器１１に嵌め合わされている。An intake pipe 27 is provided that connects the inside of the second case 22 and the carburetor 11. The inner hole of this intake pipe 27 is the intake passage 2.
8, and both the intake passage 28 and the vent hole 14 of the carburetor 11 have a circular cross section and are coaxially formed. Further, the intake passage 28 is formed so that the cross-sectional area of the intake passage 28 is approximately equal to the cross-sectional area of the venturi portion 13 when the carburetor IT is fully opened. The upper end of the intake pipe 27 is welded to the partition plate 23, and the lower end is connected to the carburetor 11 through a through hole 21b formed in the bottom plate 21a of the first case 21. An elastic cylindrical bladder made of rubber, .l-29, is interposed between the through-hole 21b and the vaporizer 11, and one end of this bladder '7+-29 is connected to the through-hole 21. b is fitted onto the inner circumferential surface, and the other end is fitted into the carburetor 11.
第４図と゛第５図は他の実施例を示し、−１，記実施例
と異なる構成につき説明する。FIGS. 4 and 5 show other embodiments, and configurations different from those of the embodiments described in 1.-1 will be explained.
第１ケース２１．！ｌ−第２ケース２２で形成された空
間が仕切板２３で横方向に分割され、一方が第１室３１
、他方が第２室３２とされる。そして、第１室３１にエ
レメント１９が内蔵され、この第１室３１の底部に吸％
１．、＋ ２４が形成される。また、仕！ｉｌＪ板２
３には連通管３３が取り（＝Ｊけられ、この連通管３３
の内孔が連通孔２６とされる。一方、第２室３２の底部
にブラケット２９によって気化器１１が連結され、各気
化器１１に連結された吸気管２７が第２室３２内で上方
に向って突出せしめられている。First case 21. ! l-The space formed by the second case 22 is divided horizontally by a partition plate 23, and one side is the first chamber 31.
, the other is the second chamber 32. The element 19 is built in the first chamber 31, and the bottom of the first chamber 31 has an absorption rate.
1. , +24 are formed. Also, work! ilJ board 2
3 has a communicating pipe 33 (=J cut, this communicating pipe 33
The inner hole is the communication hole 26. On the other hand, the carburetors 11 are connected to the bottom of the second chamber 32 by brackets 29, and the intake pipes 27 connected to each carburetor 11 are made to protrude upward within the second chamber 32.
なお、上記実施例の気化器は可変ベンチュリ一式である
が、これを固定ベンチュリ一式としても同様の効果が得
られる。Although the carburetor of the above embodiment is a set of variable venturis, the same effect can be obtained by using a set of fixed venturis.
（発明の効果）
この発明によれば、吸気路が短くてもその分この吸気路
の断面積を小さく形成し、等価管長を適市＠ｅｉにする
ことができる。また、このように吸気路の断面積を小さ
く形成しても、この吸気路の断面積が、気化器の全開時
におけるベンチュリ一部の断面積にほぼ等しくなるよう
に形成されたため、吸気の流れが円滑であり、吸気抵抗
が小さく抑えられる。よって、狭い空間に気化器やエア
クリーナを配置し、これらを連結する吸気路が短くても
、吸入効率を向上させることができる。しかも、この場
合、ベンチュリ一部と吸気路の各断面積がほぼ等しいた
め、気化器の全開時でも、空気流が吸気路からベンチュ
リ一部へ移行する際、この空気流がベンチュリ一部内で
膨張することは抑制される。従って、ベンチュリ一部内
における空気流の流速が低下し吸気負圧が低下すること
に因り燃料の噴出が阻害されるという不都合も回避され
る。(Effects of the Invention) According to the present invention, even if the air intake path is short, the cross-sectional area of the air intake path can be made smaller accordingly, and the equivalent pipe length can be adjusted to a suitable length. Furthermore, even if the cross-sectional area of the intake passage is made small in this way, the cross-sectional area of the intake passage is formed to be approximately equal to the cross-sectional area of a portion of the venturi when the carburetor is fully open, so the intake air flow is reduced. is smooth, and intake resistance is kept low. Therefore, even if the carburetor and the air cleaner are arranged in a narrow space and the intake path connecting them is short, the suction efficiency can be improved. Moreover, in this case, the cross-sectional areas of the venturi part and the intake passage are almost equal, so even when the carburetor is fully open, when the airflow moves from the intake passage to the venturi part, this airflow expands within the venturi part. What you do is restrained. Therefore, the inconvenience that fuel injection is inhibited due to a decrease in the intake negative pressure due to a decrease in the flow velocity of the air flow within a portion of the venturi is also avoided.
図はこの発明の実施例を示し、第１図は自動二輪ｊｐの
全体側面図、第２図は第１図のＩＩ −ＩＩ線欠視部分
断面図、第３図は第２図の■−■線矢視図、第４図と第
５図は他の実施例を示し、第４図はｆｆ５１図のＩＩ
−ＩＩ線矢視相当図２第５図は第４図のＶ−Ｖ線矢視断
面図である。
■＋１０自動二輪車、３・・エンジン、４φ・燃料タン
ク、１１・ψ気化器、１２’・・エアクリーナ、１３・
・ベンチュリ一部、２８・・吸気路。The drawings show an embodiment of the present invention, in which Fig. 1 is an overall side view of a motorcycle JP, Fig. 2 is a partially cutaway cross-sectional view taken along the line II-II in Fig. 1, and Fig. 3 is a - - in Fig. 2. ■A line arrow view, Figures 4 and 5 show other embodiments, and Figure 4 is II of Figure ff51.
FIG. 5 is a sectional view taken along the line V-V in FIG. 4. ■+10 Motorcycle, 3...engine, 4φ・fuel tank, 11・φ carburetor, 12'...air cleaner, 13・
・Part of Venturi, 28...Intake path.
Claims (1)
゛］タンクとが設けられ、これらエンジンと燃料タンク
の間の空間にエンジンに連結される気化器と、この気化
器に吸気路を介して連結されるエアクリーナどが設けら
れた自動二輪車において、−１−記吸気路の断１１１０
Ａが気化器の全開時におけるヘンヂュリ一部の断面積に
ほぼ等しくなるようにこの吸気路が形成されたことを４
．′ｊ徴とするエンジンの吸気装置ｌ′ｌ／。1. An engine and a fuel tank placed above the engine are provided, and a carburetor connected to the engine is provided in the space between the engine and the fuel tank, and a carburetor is connected to the carburetor through an intake passage. In a motorcycle equipped with an air cleaner connected to the
This intake passage was formed so that A was approximately equal to the cross-sectional area of a part of the engine when the carburetor was fully opened.
．． The intake system l'l/ of the engine with the characteristic 'j'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58225180A JPS60116850A (en) | 1983-11-28 | 1983-11-28 | Intake apparatus for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58225180A JPS60116850A (en) | 1983-11-28 | 1983-11-28 | Intake apparatus for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60116850A true JPS60116850A (en) | 1985-06-24 |
Family
ID=16825211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58225180A Pending JPS60116850A (en) | 1983-11-28 | 1983-11-28 | Intake apparatus for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60116850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122160U (en) * | 1986-01-24 | 1987-08-03 | ||
| JPH035959U (en) * | 1989-06-02 | 1991-01-21 |
-
1983
- 1983-11-28 JP JP58225180A patent/JPS60116850A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122160U (en) * | 1986-01-24 | 1987-08-03 | ||
| JPH053730Y2 (en) * | 1986-01-24 | 1993-01-28 | ||
| JPH035959U (en) * | 1989-06-02 | 1991-01-21 |
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