JPH0244013Y2 - - Google Patents
Info
- Publication number
- JPH0244013Y2 JPH0244013Y2 JP1988031281U JP3128188U JPH0244013Y2 JP H0244013 Y2 JPH0244013 Y2 JP H0244013Y2 JP 1988031281 U JP1988031281 U JP 1988031281U JP 3128188 U JP3128188 U JP 3128188U JP H0244013 Y2 JPH0244013 Y2 JP H0244013Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust manifold
- exhaust
- thin
- heat
- engine
- 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
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は主として軽量化と熱容量の調整に寄
与できる排気用マニホールドに関するものであ
る。[Detailed description of the invention] (Field of industrial application) This invention mainly relates to an exhaust manifold that can contribute to weight reduction and adjustment of heat capacity.
（従来の技術）
従来、エンジンでの膨張行程を終つて排気され
た排気ガスは排気弁の直後において、約800℃の
温度と３〜４気圧程度の圧力をもつており、排気
用（エキゾースト）マニホールドを経て排気管先
端のマフラー（消音器）から消音されて放散され
るものである。しかしてエンジン燃焼室をより早
く加熱させると共にマフラーの背圧などに起因す
るエンジンの過熱を防ぎ熱損失を少なくしてエン
ジン出力性能を良くするためには、上記排気用マ
ニホールド領域での放熱を良くすることが望まし
い。(Prior art) Conventionally, the exhaust gas exhausted after the expansion stroke of the engine has a temperature of about 800°C and a pressure of about 3 to 4 atmospheres immediately after the exhaust valve, and is used for exhaust gas. The sound is muffled and dissipated from the muffler (silencer) at the end of the exhaust pipe via the manifold. However, in order to heat the engine combustion chamber more quickly, prevent engine overheating caused by muffler back pressure, reduce heat loss, and improve engine output performance, it is necessary to improve heat dissipation in the exhaust manifold area. It is desirable to do so.
（考案が解決しようとする問題点）
それには排気用マニホールド全体を薄肉にすれ
ば軽量化、経済性にも寄与できよいわけである
が、排気用マニホールドはシリンダー・ヘツドな
どと同様に耐熱性の特殊鋳鉄で特別丈夫に作られ
ているものであり、排気用マニホールド全体を薄
く作ることは、従来の鋳造技術では技術的に極め
て至難な問題であつた。(The problem that the invention aims to solve) To achieve this, it would be possible to make the entire exhaust manifold thinner, which would contribute to weight reduction and economy, but the exhaust manifold, like the cylinder head, etc., should be heat resistant. It is made of special cast iron and is extremely durable, and making the entire exhaust manifold thin was an extremely difficult technical problem using conventional casting technology.
（問題点を解決するための手段）
この考案は上記問題点を解決するためになされ
たもので、次のように構成してある。(Means for Solving the Problems) This invention was made to solve the above problems, and is constructed as follows.
この考案の排気用マニホールドを以下図面につ
いて説明すると、１は、特殊鋳鉄製の排気多岐管
である。そこでこの考案は、従来の鋳造技術を活
用して部分的に施用を行う手段で、該排気多岐管
１の外表面２に多数の大小薄肉凹陥部３を点在的
に配設してなるものである。 The exhaust manifold of this invention will be explained below with reference to the drawings. 1 is an exhaust manifold made of special cast iron. Therefore, this invention is a means of partially applying conventional casting technology, in which a large number of large and small thin-walled recesses 3 are scattered on the outer surface 2 of the exhaust manifold 1. It is.
（考案の効果）
この考案の排気用マニホールドは、排気多岐管
１の外表面２に多数の薄肉凹陥部３を配設したも
のであるから、軽量化が強く要求される自動車輌
用部材として著しく軽量化に寄与できると共に安
価に提供できるなどの優れた効果がある。(Effect of the invention) The exhaust manifold of this invention has a large number of thin-walled concave portions 3 on the outer surface 2 of the exhaust manifold 1, so it is extremely effective as an automobile component that strongly requires weight reduction. It has excellent effects such as contributing to weight reduction and being able to be provided at low cost.
また多数の薄肉凹陥部３を設けてあるから、排
気用マニホールド領域での熱容量が小さくなつて
エンジンを早く加熱させることができると共に排
出側では排気の冷却による圧力減少で吸入効率の
向上にも寄与できる。 In addition, since a large number of thin-walled concave portions 3 are provided, the heat capacity in the exhaust manifold area is reduced, allowing the engine to heat up quickly, and on the exhaust side, the pressure is reduced by cooling the exhaust, contributing to improved intake efficiency. can.
また薄肉凹陥部３の大きさ、厚み、数、位置な
どの選択によつて熱容量の調整ができると共にこ
の構成手段は他の製品にも応用できるものであ
る。 In addition, the heat capacity can be adjusted by selecting the size, thickness, number, position, etc. of the thin recesses 3, and this construction means can also be applied to other products.
第１図はこの考案排気用マニホールドの正面
図、第２図は同右側面図、第３図は第２図のＡ−
Ａ線断面図である。
１……排気多岐管、２……外表面、３……薄肉
凹陥部。
Figure 1 is a front view of this devised exhaust manifold, Figure 2 is a right side view of the exhaust manifold, and Figure 3 is A-A in Figure 2.
It is an A-line sectional view. 1... Exhaust manifold, 2... Outer surface, 3... Thin wall recess.
Claims (1)
を点在的に配設してなる排気用マニホールド。 Numerous thin-walled recesses 3 on the outer surface 2 of the exhaust manifold 1
An exhaust manifold made up of scattered locations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988031281U JPH0244013Y2 (en) | 1988-03-09 | 1988-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988031281U JPH0244013Y2 (en) | 1988-03-09 | 1988-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01134720U JPH01134720U (en) | 1989-09-14 |
| JPH0244013Y2 true JPH0244013Y2 (en) | 1990-11-22 |
Family
ID=31257029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988031281U Expired JPH0244013Y2 (en) | 1988-03-09 | 1988-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244013Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743314U (en) * | 1980-08-21 | 1982-03-09 | ||
| JPS6084715U (en) * | 1983-11-15 | 1985-06-11 | 日産自動車株式会社 | engine manifold |
-
1988
- 1988-03-09 JP JP1988031281U patent/JPH0244013Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01134720U (en) | 1989-09-14 |
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