JPS5928089Y2 - 2 cycle engine - Google Patents
2 cycle engineInfo
- Publication number
- JPS5928089Y2 JPS5928089Y2 JP12021379U JP12021379U JPS5928089Y2 JP S5928089 Y2 JPS5928089 Y2 JP S5928089Y2 JP 12021379 U JP12021379 U JP 12021379U JP 12021379 U JP12021379 U JP 12021379U JP S5928089 Y2 JPS5928089 Y2 JP S5928089Y2
- Authority
- JP
- Japan
- Prior art keywords
- intake passage
- reed valve
- carburetor
- engine
- cylinder
- 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
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】
本考案は、混合気の吸気通路内にリードバルブを配設し
た２サイクルエンジンに関するものである。[Detailed Description of the Invention] The present invention relates to a two-stroke engine in which a reed valve is disposed in the air-fuel mixture intake passage.
従来、２サイクルエンジンの混合気の吸気通路内に配設
されて混合気が気化器側に流れるのを防止するリードバ
ルブは、エンジンのシリンダ部に対して垂直方向に配さ
れていたので、吸気通路自体が長くなり、２サイクルエ
ンジンの小型化が困難であった二
本考案の目的は、シリンダ部に平行にリードバルブを配
することによりエンジンの小型化を可能とする２サイク
ルエンジンを提供することにある。Conventionally, the reed valve, which was installed in the intake passage of a two-cycle engine to prevent the air-fuel mixture from flowing to the carburetor, was placed perpendicular to the engine cylinder. The purpose of this invention was to provide a two-stroke engine that made it possible to downsize the engine by arranging a reed valve parallel to the cylinder part, which made it difficult to downsize the two-stroke engine due to the long passage itself. There is a particular thing.
以下、本考案の一実施例を図に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
２サイクルエンジン１はシリンダ部１ａとクランク室１
ｂとを有し、ピストン（図示せず）はシリンダ部りａ内
を上下方向に往復動するものである。A two-stroke engine 1 has a cylinder portion 1a and a crank chamber 1.
A piston (not shown) reciprocates in the vertical direction within the cylinder portion a.
気化器２は一端を図示しないエアクリーナーに連結され
、他端を第一吸気通路３に連結されている。The carburetor 2 has one end connected to an air cleaner (not shown), and the other end connected to the first intake passage 3.
第一吸気通路３の先端は開口３ａをもってシリンダ部１
に連通し、この開口３ａは図示しないピストンの往復動
によって開閉される。The tip of the first intake passage 3 has an opening 3a in the cylinder portion 1.
This opening 3a is opened and closed by the reciprocating movement of a piston (not shown).
第一吸気通路３の中途部からは第二吸気通路４が分岐し
、第二吸気通路４の先端部４ａはクランク室１ｂに開口
している。A second intake passage 4 branches off from the middle of the first intake passage 3, and a tip 4a of the second intake passage 4 opens into the crank chamber 1b.
また、第一吸気通路３内にはシリンダ部１ａと平行にリ
ードバルブ５が配設され、リードバルブ５は、気化器２
で生成された混合気が第一吸気通路３、第二吸気通路４
方向へのみ流れることを許容し、気化器２方向へ流れる
ことを防止する一種の逆止弁として機能する。Further, a reed valve 5 is disposed in the first intake passage 3 in parallel with the cylinder portion 1a, and the reed valve 5 is connected to the carburetor 2.
The air-fuel mixture generated in the first intake passage 3 and the second intake passage 4
It functions as a kind of check valve that allows flow only in one direction and prevents flow in two directions in the carburetor.
そして、リードバルブ５の開放端部５ａは第二吸気通路
４側に位置させである。The open end 5a of the reed valve 5 is located on the second intake passage 4 side.
これにより、混合気がクランク室１ｂに流入するときに
、リードバルブ５が混合気を案内し、円滑に流入させる
ことになる。Thereby, when the air-fuel mixture flows into the crank chamber 1b, the reed valve 5 guides the air-fuel mixture and allows it to flow smoothly.
なお、図中、６，６．６は掃気通路を示し、７はエキゾ
ーストポートを示す。In addition, in the figure, 6, 6.6 shows a scavenging passage, and 7 shows an exhaust port.
本考案の２サイクルエンジンは、上記したようにリード
バルブがシリンダ部に対して平行に配設されているから
、シリンダ部に対してほぼ垂直に伸長する第一吸気通路
の全長が短縮され、エンジンが小型化されるという効果
を生ずる。In the two-stroke engine of the present invention, since the reed valve is arranged parallel to the cylinder section as described above, the total length of the first intake passage that extends almost perpendicularly to the cylinder section is shortened, and the engine This has the effect that the size is reduced.
更に、第一吸気通路の全長が短縮された結果、エンジン
からエアクリーナーまでの距離が十分にとれ、エアクリ
ーナー容積をその分だけ大きくできるので、吸気効率、
吸入騒音の低減が図れるという効果をも生ずる。Furthermore, as the overall length of the first intake passage has been shortened, there is a sufficient distance from the engine to the air cleaner, and the volume of the air cleaner can be increased accordingly, improving intake efficiency.
This also has the effect of reducing inhalation noise.
また、本考案の２サイクルエンジンは小型化しうるから
オートバイ等の搭載した場合に、バツテリイ、ツールボ
ックス等の他の部品の収納スペースが大きくとれるとい
う効果も生ずる。Furthermore, since the two-stroke engine of the present invention can be made smaller, when it is mounted on a motorcycle or the like, it has the effect of providing a large storage space for other parts such as a battery and a tool box.
図は、本考案の２サイクルエンジンの要部断面図である
。
１・・・・・・２サイクルエンジン、２・・・・・・気
化器、１ａ・・・・・・シリンダ部、１ｂ・・・・・・
クランク室、３・・・・・・第一吸気通路、４・・・・
・・第二吸気通路、５・・・・・・リードバルブ、６−
・・・・・掃気通路、７・・・・・・エキゾーストポー
ト。The figure is a sectional view of essential parts of the two-stroke engine of the present invention. 1... 2-cycle engine, 2... Carburizer, 1a... Cylinder section, 1b...
Crank chamber, 3... First intake passage, 4...
...Second intake passage, 5...Reed valve, 6-
...Scavenging passage, 7...Exhaust port.
Claims (1)
に該開口が前記シリンダ部の内部を往復動するピストン
によって開閉される第一吸気通路を設け、該第−吸気通
路の中途部から分岐し端部をクランク室に開口する第二
吸気通路を設け、前記第一吸気通路内の前記第二吸気通
路との分岐部よりも前記気化器側に前記シリンダ部とは
平行にリードバルブを配設し、該リードバルブの開放端
部を前記第二吸気通路側に位置させたことを特徴とする
２サイクルエンジン。A first intake passage is provided, one end of which is connected to the carburetor, the other end of which is opened to a cylinder part, and the opening is opened and closed by a piston that reciprocates inside the cylinder part, and the first intake passage branches off from a midway part of the first intake passage. A second intake passage whose end opens into the crank chamber is provided, and a reed valve is disposed in parallel with the cylinder portion on the side of the carburetor from a branching part with the second intake passage in the first intake passage. A two-stroke engine, characterized in that the open end of the reed valve is located on the second intake passage side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12021379U JPS5928089Y2 (en) | 1979-08-31 | 1979-08-31 | 2 cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12021379U JPS5928089Y2 (en) | 1979-08-31 | 1979-08-31 | 2 cycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5638123U JPS5638123U (en) | 1981-04-10 |
| JPS5928089Y2 true JPS5928089Y2 (en) | 1984-08-14 |
Family
ID=29352399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12021379U Expired JPS5928089Y2 (en) | 1979-08-31 | 1979-08-31 | 2 cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5928089Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2502369Y2 (en) * | 1987-03-06 | 1996-06-19 | 木下 清 | Pin tumbler lock |
| JPH0279772U (en) * | 1988-12-06 | 1990-06-19 |
-
1979
- 1979-08-31 JP JP12021379U patent/JPS5928089Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5638123U (en) | 1981-04-10 |
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