JPS6318752Y2 - - Google Patents
Info
- Publication number
- JPS6318752Y2 JPS6318752Y2 JP12960882U JP12960882U JPS6318752Y2 JP S6318752 Y2 JPS6318752 Y2 JP S6318752Y2 JP 12960882 U JP12960882 U JP 12960882U JP 12960882 U JP12960882 U JP 12960882U JP S6318752 Y2 JPS6318752 Y2 JP S6318752Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- cylinder
- cover
- fan
- air
- 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 34
- 239000000446 fuel Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Description
【考案の詳細な説明】
この考案は、オートバイ等に塔載する小型の２
サイクルエンジンの冷却装置に関する。[Detailed explanation of the invention] This invention is a small 2
The present invention relates to a cooling device for a cycle engine.
オートバイ等に塔載する小型の２サイクルエン
ジンは、シリンダ及びシリンダヘツドに多数の冷
却フインを設けて、走行による風を当てて冷却す
るか、シリンダ及びシリンダヘツドに多数の冷却
フインを設けてフアンカバーで覆い、クランク軸
端の冷却フアンで送風して冷却する強制空冷式に
なつている。特にスクータータイプのように、走
行による風が当り難いものには、強制空冷が用い
られる。強制空冷は、冷却性能をよくするには、
冷却フアンの能力を大きいものにしなければなら
ず損失馬力が大きくなり、燃料の消費も多くなる
等の不都合が生じる。 Small two-stroke engines mounted on motorcycles etc. are either equipped with a large number of cooling fins on the cylinder and cylinder head and are cooled by blowing air from driving, or are equipped with a large number of cooling fins on the cylinder and cylinder head and covered with a fan cover. It is a forced air-cooled system that uses a cooling fan at the end of the crankshaft to cool the engine. Forced air cooling is especially used for scooters that are not easily exposed to the wind caused by driving. For forced air cooling, to improve cooling performance,
The capacity of the cooling fan must be increased, resulting in disadvantages such as increased horsepower loss and increased fuel consumption.
この考案は、かかる点に鑑み、シリンダだけを
効率的に強制空冷にしたもので、以下本考案を図
面に示す実施例について説明する。 In view of this point, this invention efficiently cools only the cylinder with forced air.Hereinafter, an embodiment of the invention shown in the drawings will be described.
シリンダ１には、周りに広がる冷却フイン２を
多数設けると共に、冷却フイン２の前後面の先端
を鋳造時に一体的に連結して覆い部３を設ける。
そして、シリンダ１の排気孔４がある側の覆い部
３には、排気孔４の周りに放出口５を設ける。シ
リンダ１の冷却フイン２の左右側面は開口してい
るが、一方には、クランク軸端の冷却フアン６を
覆つたフアンカバー７の導風口８を連結する。ま
た、他方は覆板９を装着して覆う。なお、図中１
０，１１はパツキングである。フアンカバー７の
外側には、導風取入口１２が設けてある。シリン
ダ１の上端に連結するシリンダヘツド１３には、
多数の冷却フイン１４が立設してあつて、走行に
よる風を当てて冷却する。１５は点火栓である。 A cylinder 1 is provided with a large number of cooling fins 2 that extend around the circumference, and a cover portion 3 is provided by integrally connecting the tips of the front and rear surfaces of the cooling fins 2 during casting.
A discharge port 5 is provided around the exhaust hole 4 in the cover portion 3 of the cylinder 1 on the side where the exhaust hole 4 is located. The left and right side surfaces of the cooling fins 2 of the cylinder 1 are open, and an air guide port 8 of a fan cover 7 that covers the cooling fan 6 at the end of the crankshaft is connected to one side. The other side is covered with a cover plate 9. In addition, 1 in the figure
0,11 is packing. A wind guide intake port 12 is provided on the outside of the fan cover 7. The cylinder head 13 connected to the upper end of the cylinder 1 has
A large number of cooling fins 14 are erected, and cooling is achieved by applying wind from running. 15 is a spark plug.
作用について説明する。 The effect will be explained.
運転中、シリンダヘツド１３の冷却フイン１４
には、走行による風が当つて冷却される。一方、
シリンダ１の外周部には、冷却フアン６の回転に
よつて、導風口８に冷却風が送られる。この冷却
風は、覆い部３と覆板９で覆われた冷却フイン２
の間を流れてシリンダ１を冷却し、排気孔４の周
りの放出口５から、排気孔４を冷却しながら放出
される。このように、シリンダ１だけ冷却フアン
６による冷却風で強制空冷するので、冷却フアン
６の送風能力は、約半分の小型のものでよく、損
失馬力が少く、シリンダ１を効率よく冷却する。
そして、最も温度が上昇する排気孔４を最後に冷
却した後に上記シリンダ部から排出される。しか
して冷却フアン６の小型化によつて損失馬力が少
いので、燃料消費も少くできる。 During operation, the cooling fins 14 of the cylinder head 13
is cooled by the wind from driving. on the other hand,
Cooling air is sent to the outer circumference of the cylinder 1 through the air guide port 8 by the rotation of the cooling fan 6 . This cooling air flows through the cooling fins 2 covered with the cover part 3 and the cover plate 9.
It flows between the exhaust holes 4 to cool the cylinder 1, and is discharged from the discharge ports 5 around the exhaust holes 4 while cooling the exhaust holes 4. In this way, only the cylinder 1 is forcedly air-cooled with the cooling air from the cooling fan 6, so the blowing capacity of the cooling fan 6 only needs to be about half as small, the horsepower loss is small, and the cylinder 1 is efficiently cooled.
Then, after the exhaust hole 4, where the temperature rises the most, is cooled last, it is discharged from the cylinder section. As the cooling fan 6 is made smaller, horsepower loss is reduced, and fuel consumption can also be reduced.
以上説明したように、この考案は、シリンダに
設けた多数の冷却フインの前後面を一体的に連結
して覆い部を設けると共に、該覆い部のシリンダ
の排気孔の周りに放出口を設け、左右側面の一方
にクランク軸端の冷却フアンを覆つたフアンカバ
−の導風口を連結し、他方を覆板で覆つたので、
シリンダだけ強制空冷できて、小さい冷却フアン
で効率よく冷却でき、損失馬力が少くて、燃料消
費を少くできる。またシリンダの排気孔も効率よ
く冷却できる。そして、シリンダの冷却フインは
覆い部で連結しているので、振動共振音も少くで
きる。 As explained above, this invention provides a covering part by integrally connecting the front and rear surfaces of a large number of cooling fins provided on a cylinder, and also provides a discharge port around the exhaust hole of the cylinder in the covering part. The air guide port of the fan cover that covers the cooling fan at the end of the crankshaft was connected to one of the left and right sides, and the other side was covered with a cover plate.
Only the cylinder can be forced air cooled, allowing efficient cooling with a small cooling fan, reducing horsepower loss and reducing fuel consumption. In addition, the exhaust hole of the cylinder can be efficiently cooled. Furthermore, since the cooling fins of the cylinder are connected through the cover, vibration resonance noise can also be reduced.
図は本考案の一実施例を示し、第１図は一部を
破断面とした平面図、第２図は同側面図である。
１……シリンダ、２……冷却フイン、３……覆
い部、４……排気孔、５……放出口、６……冷却
フアン、７……フアンカバー、８……導風口、９
……覆板。
The drawings show an embodiment of the present invention, with FIG. 1 being a partially broken plan view, and FIG. 2 being a side view of the same. DESCRIPTION OF SYMBOLS 1... Cylinder, 2... Cooling fin, 3... Cover part, 4... Exhaust hole, 5... Discharge port, 6... Cooling fan, 7... Fan cover, 8... Air guide port, 9
...Cover board.
Claims (1)
一体的に連結して覆い部を設けると共に、該覆い
部のシリンダの排気孔の周りに放出口を設け、左
右側面の一方にクランク軸端の冷却フアンを覆つ
たフアンカバーの導風口を連結し、他方を覆板で
覆つたことを特徴とする２サイクルエンジンの冷
却装置。 A cover is provided by integrally connecting the front and rear surfaces of a large number of cooling fins provided on the cylinder, and a discharge port is provided around the exhaust hole of the cylinder in the cover, and one of the left and right sides is provided for cooling the end of the crankshaft. A cooling device for a two-stroke engine, characterized in that the air guide ports of a fan cover that covers a fan are connected, and the other is covered with a cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12960882U JPS5934016U (en) | 1982-08-27 | 1982-08-27 | 2-cycle engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12960882U JPS5934016U (en) | 1982-08-27 | 1982-08-27 | 2-cycle engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5934016U JPS5934016U (en) | 1984-03-02 |
| JPS6318752Y2 true JPS6318752Y2 (en) | 1988-05-26 |
Family
ID=30293614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12960882U Granted JPS5934016U (en) | 1982-08-27 | 1982-08-27 | 2-cycle engine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934016U (en) |
-
1982
- 1982-08-27 JP JP12960882U patent/JPS5934016U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5934016U (en) | 1984-03-02 |
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