JPH0326250Y2 - - Google Patents
Info
- Publication number
- JPH0326250Y2 JPH0326250Y2 JP1985097284U JP9728485U JPH0326250Y2 JP H0326250 Y2 JPH0326250 Y2 JP H0326250Y2 JP 1985097284 U JP1985097284 U JP 1985097284U JP 9728485 U JP9728485 U JP 9728485U JP H0326250 Y2 JPH0326250 Y2 JP H0326250Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- muffler
- manifold
- front part
- communicates
- 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
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、シリンダーからマニホールドを介し
てマフラーに排気するエンジンの排気装置に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine exhaust system that exhausts air from a cylinder to a muffler via a manifold.
従来のものは、特開昭57−168019号公報に見ら
れるように、シリンダーからマニホールドを介し
てマフラーを設けるとき、シリンダーから離れた
位置にマフラーを連設し、シリンダー、マニホー
ルド、マフラーの３者を個別に冷却を行なつてい
る。
As seen in Japanese Patent Application Laid-Open No. 57-168019, when a muffler is installed from a cylinder via a manifold, the muffler is installed in series at a position away from the cylinder, and the three parts of the cylinder, manifold, and muffler are connected. are individually cooled.
従来の構成では、シリンダーとマフラーが離間
し、大型化になつている。これを単に接近して配
設すると、相互の放熱により、シリンダー、マフ
ラー及びこれを連設するマニホールドの排気装置
が過熱する問題がある。
In conventional configurations, the cylinder and muffler are separated, resulting in larger sizes. If these are simply disposed close to each other, there is a problem that the cylinder, the muffler, and the exhaust device of the manifold connected thereto will overheat due to mutual heat radiation.
そのため、本考案では、シリンダーとその直下
のマフラーの間にシリンダーとその直下のマフラ
ーの間に介在して前記シリンダーに連通するマニ
ホールドの前部を横長で小径小形に形成するとと
もに、該前部の周囲部にはシリンダー側のジヤケ
ツトに連通するジヤケツトを形成し、前記前部の
一端側より下方に屈曲して前記マフラーの横側部
に連通するマニホールドの後部を広いチヤンバー
となるよう大形に形成するとともに、少なくとも
その後部の外周には冷却用フインを形成して構成
したものである。
Therefore, in the present invention, the front part of the manifold that is interposed between the cylinder and the muffler directly below the cylinder and communicates with the cylinder is formed horizontally long and small in diameter, and the front part of the manifold is A jacket is formed in the peripheral portion that communicates with the jacket on the cylinder side, and the rear part of the manifold, which is bent downward from one end of the front part and communicates with the side part of the muffler, is formed in a large size to form a wide chamber. At the same time, cooling fins are formed on at least the outer periphery of the rear portion.
したがって、シリンダーに連通するマニホール
ドの前部を冷却できるようにしたから、マフラー
をマニホールドの前部に充分に接近させることが
できてエンジン全体を小形にすることができるこ
とになり、排気時には、マニホールド内に流出し
て後部に流れる状態で排気は良好に膨張できると
ともに、その後部も周囲のフインにより良好に冷
却することができることになる。
Therefore, since the front part of the manifold that communicates with the cylinder can be cooled, the muffler can be brought sufficiently close to the front part of the manifold, making it possible to downsize the entire engine. The exhaust gas can be expanded well by flowing out to the rear part, and the rear part can also be well cooled by the surrounding fins.
次に、図面に示す実施例について説明する。 Next, the embodiment shown in the drawings will be described.
第１図は要部の縦断面図を示し、全体を小形に
構成する可搬式消防ポンプのエンジンであり、２
気筒形のシリンダー１には両排気ポート７、吸気
ポート８、ジヤケツト４を従来形構造同様に形成
し、また、前記シリンダー１の直下に組付けるマ
フラー３は、側部に排気導入筒９を、内部に連通
筒１０を、側部にテールパイプ１１をそれぞれ有
するとともに、周面には供給パイプ１２および排
水パイプ１３に連通するジヤケツト１４を形成し
て構成し、前記ジヤケツト４や１４には消防ポン
プの揚水の一部を垂れ流し式に送水できるように
したものである。 Figure 1 shows a vertical cross-sectional view of the main parts, showing a portable fire pump engine with a compact overall structure.
The cylinder-shaped cylinder 1 has both exhaust ports 7, an intake port 8, and a jacket 4 formed in the same manner as the conventional structure, and the muffler 3 to be assembled directly below the cylinder 1 has an exhaust introduction tube 9 on the side. It has a communication cylinder 10 inside and a tail pipe 11 on the side, and a jacket 14 is formed on the circumferential surface to communicate with a supply pipe 12 and a drainage pipe 13, and the jackets 4 and 14 are equipped with a fire pump. A portion of the pumped water can be sent in a trickling manner.
前記排気ポート７，７と排気導入筒９に連通す
るマニホールド２を前記シリンダー１とマフラー
３の間に介装するが、シリンダー１とマフラー３
の間に位置して横長となるマニホールド２の前部
２ａを小形小形に形成し、シリンダー１の下面に
接合する前部２ａの上面２ケ所には両排気ポート
７，７に合致する連通口１５，１５をそれぞれ形
成し、該前部２ａの周囲には前記シリンダー１の
ジヤケツト４に連通するジヤケツト５を多数形成
するとともに、そのジヤケツト５の一部には外方
に通じる排水口１６を形成して構成する。 A manifold 2 communicating with the exhaust ports 7 and the exhaust introduction tube 9 is interposed between the cylinder 1 and the muffler 3.
The front part 2a of the manifold 2, which is horizontally long and located between the cylinders 1 and 2, is formed into a small size, and two communication ports 15 are provided on the upper surface of the front part 2a, which is joined to the lower surface of the cylinder 1, and which match with both exhaust ports 7, 7. , 15 are respectively formed, and a large number of jackets 5 communicating with the jacket 4 of the cylinder 1 are formed around the front part 2a, and a drain port 16 communicating to the outside is formed in a part of the jacket 5. Configure.
また、前記前部２ａの一端側より下方に屈曲し
て前記マフラー３の横側部に連通するマニホール
ド２の後部２ｂを横断面長円形の広いチヤンバー
となるよう大形に形成するとともに、シリンダー
１とマフラー３の間から横外側方に出張る状態と
なるその後部２ｂの外周から前部２ａの終端側の
外周にかけて多数の冷却用フイン６を一体に形成
し、前部２ａの下方に接近させて組付けたマフラ
ー３の排気導入筒９外端に後部２ｂの後端口１７
を合致させてボルト１８により固定し、構成す
る。 Further, the rear part 2b of the manifold 2, which is bent downward from one end side of the front part 2a and communicates with the side part of the muffler 3, is formed in a large size so as to form a wide chamber with an oval cross section. A large number of cooling fins 6 are integrally formed from the outer periphery of the rear part 2b that protrudes laterally outwardly from between the muffler 3 and the muffler 3 to the outer periphery of the terminal end of the front part 2a, and are brought closer to the lower part of the front part 2a. The rear end port 17 of the rear part 2b is attached to the outer end of the exhaust introduction pipe 9 of the muffler 3 assembled with
are aligned and fixed with bolts 18.
したがって、シリンダー１の下方に連設するマ
ニホールド２の前部２ａを小径小形に形成したの
で、マフラー３をその前部２ａの下方に充分に接
近させて組付けると、エンジン全体をその分だけ
小形に構成することができて、例えば可搬式消防
ポンプのエンジンとして好適に装備できることに
なる。 Therefore, since the front part 2a of the manifold 2, which is connected to the lower part of the cylinder 1, is formed to have a small diameter, if the muffler 3 is assembled sufficiently close to the lower part of the front part 2a, the entire engine can be made smaller by that amount. Therefore, it can be suitably installed as an engine for a portable fire pump, for example.
運転時には、マフラー３をシリンダー１に接近
させた状態であつても、マニホールド２の前部２
ａはジヤケツト５内の水により冷却できるととも
に、後部２ｂは周囲のフイン６から放熱すること
ができることになり、シリンダー１からの排気が
マニホールド２の前部２ａ内から後部２ｂ内に流
れる状態で良好に膨張してマフラー３に流れるこ
とになつて、エンジン運転時には冷却効果、消音
効果ともに良好に行われることになる。 During operation, even when the muffler 3 is close to the cylinder 1, the front part 2 of the manifold 2
a can be cooled by the water in the jacket 5, and the rear part 2b can radiate heat from the surrounding fins 6, so that the exhaust from the cylinder 1 flows from the front part 2a of the manifold 2 into the rear part 2b, which is good. This expands and flows into the muffler 3, resulting in good cooling and noise reduction effects during engine operation.
このように本考案は、シリンダー１の下方に連
設するマニホールド２の前部２ａを小径小形にし
て冷却できるようにしたから、マフラー３をマニ
ホールド２の前部２ａ下方に充分に接近させて組
付けることができることになつて、エンジン全体
を小形にすることができることになり、また、マ
ニホールド２の後部２ｂはマフラー３の側部の空
間部を利用して広いチヤンバーを形成できるか
ら、排気時には、排気がマニホールド２の前部２
ａ内から後部２ｂ内に流れる状態で良好に膨張で
きることになつて消音が良好に行われることにな
り、その後部２ｂも外周のフイン６より良好に放
熱できることになり、放熱性の良いマニホールド
２にして簡単な構造で好適に実施できる特長を有
する。
In this way, the present invention makes it possible to cool the front part 2a of the manifold 2, which is connected to the lower part of the cylinder 1, by making it smaller in diameter. Since the rear part 2b of the manifold 2 can form a wide chamber by using the space on the side of the muffler 3, when exhausting, Exhaust is in the front part 2 of manifold 2
The flow from inside a to the rear part 2b allows for good expansion, resulting in good noise reduction, and the rear part 2b can also dissipate heat better than the fins 6 on the outer periphery, making the manifold 2 with good heat dissipation. It has the advantage that it has a simple structure and can be suitably implemented.
第１図は本考案の実施例である要部の縦断面
図、第２図は第１図のＡ−Ａ線における視図、第
３図は第２図のＢ−Ｂ線における断面図、第４図
および第５図は第１図のＣ−Ｃ線およびＤ−Ｄ線
における断面図をそれぞれ示す。
１…シリンダー、２…マニホールド、３…マフ
ラー、２ａ…前部、４，５…ジヤケツト、２ｂ…
後部、６…フイン。
FIG. 1 is a vertical cross-sectional view of the main part of an embodiment of the present invention, FIG. 2 is a perspective view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. 4 and 5 show cross-sectional views taken along line CC and line D-D in FIG. 1, respectively. 1... Cylinder, 2... Manifold, 3... Muffler, 2a... Front, 4, 5... Jacket, 2b...
Rear, 6...Fin.
Claims (1)
在して前記シリンダー１に連通するマニホールド
２の前部２ａを横長で小径小形に形成するととも
に、該前部２ａの周囲部にはシリンダー１側のジ
ヤケツト４に連通するジヤケツト５を形成し、前
記前部２ａの一端側より下方に屈曲して前記マフ
ラー３の横側部に連通するマニホールド２の後部
２ｂを広いチヤンバーとなるよう大形に形成する
とともに、少なくともその後部２ｂの外周には冷
却用フイン６を形成して構成したことを特徴とす
るエンジンの排気装置。 The front part 2a of the manifold 2, which is interposed between the cylinder 1 and the muffler 3 directly below it and communicates with the cylinder 1, is formed to be horizontally long and small in diameter, and a jacket on the cylinder 1 side is provided around the front part 2a. 4, and the rear part 2b of the manifold 2, which is bent downward from one end side of the front part 2a and communicates with the side part of the muffler 3, is formed in a large size to form a wide chamber. An engine exhaust system characterized in that cooling fins 6 are formed on at least the outer periphery of the rear part 2b of the engine exhaust system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985097284U JPH0326250Y2 (en) | 1985-06-26 | 1985-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985097284U JPH0326250Y2 (en) | 1985-06-26 | 1985-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS626420U JPS626420U (en) | 1987-01-16 |
| JPH0326250Y2 true JPH0326250Y2 (en) | 1991-06-06 |
Family
ID=30964078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985097284U Expired JPH0326250Y2 (en) | 1985-06-26 | 1985-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326250Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57168019A (en) * | 1981-04-10 | 1982-10-16 | Yamaha Motor Co Ltd | Exhaust device for two stroke cycle engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659920U (en) * | 1979-10-16 | 1981-05-22 | ||
| JPS6023455Y2 (en) * | 1980-05-22 | 1985-07-12 | 株式会社クボタ | Internal combustion engine exhaust manifold water cooling system |
-
1985
- 1985-06-26 JP JP1985097284U patent/JPH0326250Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57168019A (en) * | 1981-04-10 | 1982-10-16 | Yamaha Motor Co Ltd | Exhaust device for two stroke cycle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS626420U (en) | 1987-01-16 |
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