JPS6026178Y2 - Internal combustion engine cooling system - Google Patents
Internal combustion engine cooling systemInfo
- Publication number
- JPS6026178Y2 JPS6026178Y2 JP1978078181U JP7818178U JPS6026178Y2 JP S6026178 Y2 JPS6026178 Y2 JP S6026178Y2 JP 1978078181 U JP1978078181 U JP 1978078181U JP 7818178 U JP7818178 U JP 7818178U JP S6026178 Y2 JPS6026178 Y2 JP S6026178Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- water
- cooling water
- internal combustion
- combustion 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
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関の冷却装置に関し、特に、シリンダ
ライナの上部と排気弁シートとの冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for an internal combustion engine, and particularly to a cooling device for an upper part of a cylinder liner and an exhaust valve seat.
従来の強制水冷方式による冷却装置では、シリンダライ
ナの上部部分（燃焼室の側壁面となる）や排気弁シート
は、その他の部分と同じ冷却系統に連っているため、高
出力時にはシリンダライナの上部部分や排気弁シートは
過熱気味となって潤滑油が燃えたり、劣化したりして、
リング、ライナの摩耗を促進し、また低出力時にはシリ
ンダライナの内周面や弁シート部が適冷気味となって、
排ガス中の亜硫酸ガスが水蒸気と反応して硫酸となり、
燃焼室壁を腐蝕する等の欠点がある。In conventional forced water cooling systems, the upper part of the cylinder liner (which forms the side wall surface of the combustion chamber) and the exhaust valve seat are connected to the same cooling system as other parts, so the cylinder liner is cooled at high output. The upper part and exhaust valve seat may become overheated, causing the lubricating oil to burn or deteriorate.
This accelerates ring and liner wear, and at low output, the inner peripheral surface of the cylinder liner and valve seat become slightly cool.
Sulfur dioxide gas in exhaust gas reacts with water vapor to become sulfuric acid,
There are disadvantages such as corrosion of the combustion chamber walls.
本考案の目的は、このような従来技術の欠点を克服し、
低出力時の適冷および高出力時の過熱を防止することの
できる、改良された内燃機関の冷却装置を提供すること
にある。The purpose of the present invention is to overcome the drawbacks of such conventional techniques,
An object of the present invention is to provide an improved cooling device for an internal combustion engine that can properly cool the engine at low output and prevent overheating at high output.
この目的を遠戚するため、本考案は、シリンダライナの
上部に冷却水を導入する木管を埋設するとともに、該木
管の吐出水を導管によって温度調節弁に導き、該温度調
節弁によって前記冷却水の温度をウォータジャケットの
水温よりも高い温度に保ちながら、導管を通して前記冷
却水を排気弁シートのジャケットに供給するように構成
上たことを特徴とするものである。In order to achieve this objective, the present invention embeds a wood pipe for introducing cooling water into the upper part of the cylinder liner, and guides the water discharged from the wood pipe through a conduit to a temperature control valve, and the temperature control valve allows the cooling water to flow through the cylinder liner. The exhaust valve seat is characterized in that the cooling water is supplied to the jacket of the exhaust valve seat through the conduit while maintaining the temperature of the water at a higher temperature than the water temperature of the water jacket.
以下、図面により本考案の実施例を説明する。Embodiments of the present invention will be described below with reference to the drawings.
図において、１はシリンダライナでその内周面にはピス
トン２が上下方向に摺動自在に嵌挿されている。In the figure, reference numeral 1 denotes a cylinder liner, and a piston 2 is fitted into the inner peripheral surface of the cylinder liner so as to be slidable in the vertical direction.
３はシリンダブロックの冷却室で、該冷却室３には冷却
水分配管４が連設している。3 is a cooling chamber of the cylinder block, and a cooling water pipe 4 is connected to the cooling chamber 3.
シリンダライナ１の上部部分の燃焼室の側壁を形成する
部分には、水管゛５が鋳造時に鋳込まれて配置されてお
り、その下端の流入口６は、シリンダブロックの冷却室
３に開口する。A water pipe 5 is placed in the upper part of the cylinder liner 1, which forms the side wall of the combustion chamber, during casting, and the inlet 6 at the lower end opens into the cooling chamber 3 of the cylinder block. .
水管５の上端の吐出ロアは導管２０を介して冷却水管の
集合管８に連り、集合管８は温度調節弁９に連る。The discharge lower at the upper end of the water pipe 5 is connected to a collecting pipe 8 of cooling water pipes via a conduit 20, and the collecting pipe 8 is connected to a temperature control valve 9.
この温度調節弁９は冷却水の温度を感知して自動的に流
量を制御して、冷却水集合管１０に流出する冷却水を設
定温度に保つもので、該冷却水集合管１０の吐出水は導
管１１を経て弁シート１２に設けた冷却水ジャケット１
３に送られる。This temperature control valve 9 senses the temperature of the cooling water and automatically controls the flow rate to maintain the cooling water flowing into the cooling water collecting pipe 10 at a set temperature. is a cooling water jacket 1 provided on the valve seat 12 via a conduit 11.
Sent to 3.
冷却水ジャケット１３の吐出口はシリンダブロック１４
のジャケット１５に連っている。The outlet of the cooling water jacket 13 is connected to the cylinder block 14.
It is connected to Jacket 15.
図中、１８は排気弁、１７は吸気弁、１８は排気ポート
、１９は吸気ポートを示す。In the figure, 18 is an exhaust valve, 17 is an intake valve, 18 is an exhaust port, and 19 is an intake port.
なお多気筒機関の場合は、上述のように、集合管８，１
０を設けこれに各気筒からの冷却水を集め或は供給する
が単気筒の場合或は各気筒毎に温度調節弁９を設けると
きは、集合管８゜１０は省略できることは明らかであろ
う。In addition, in the case of a multi-cylinder engine, as mentioned above, the collecting pipes 8, 1
It is clear that the collector pipes 8 and 10 can be omitted in the case of a single cylinder or when a temperature control valve 9 is provided for each cylinder. .
このように、燃焼室を形成するシリンダライナ上部部分
を強制冷却した冷却水の出口部に温度調整をする調整弁
を設け、これによりジャケット部より高い温度に設定し
た冷却水を常に排気弁シート部に供給するようにしたた
め、排気弁シート部は機関の運転状態にかかわりなく、
常に一定温度に保たれることになり、低出力時の過冷、
高出力時の過熱が防止できることになる。In this way, a temperature adjustment valve is provided at the outlet of the cooling water that forcibly cools the upper part of the cylinder liner that forms the combustion chamber, and this allows the cooling water, which is set at a higher temperature than the jacket part, to be constantly supplied to the exhaust valve seat. Since the exhaust valve seat is supplied with
This means that the temperature is always maintained at a constant level, which prevents supercooling during low output.
This will prevent overheating during high output.
また、シリンダライナの上部部分はその個所に埋設した
冷却水管内を流れる冷却水により効果的に冷却されるか
らこの部分の過熱が防止できることになる。Further, since the upper part of the cylinder liner is effectively cooled by the cooling water flowing through the cooling water pipe buried in that part, overheating of this part can be prevented.
以−ヒ述べたように、本考案によれば、シリンダライナ
の上部部分や排気弁シート部は適温に保たれるため、過
熱や過冷による常置が防止でき、機関の耐久性を向上す
ることができ、その実用上の効果は顕著である。As described below, according to the present invention, the upper part of the cylinder liner and the exhaust valve seat are kept at an appropriate temperature, which prevents permanent overheating or overcooling and improves the durability of the engine. can be achieved, and its practical effects are remarkable.
図は本考案に係る内燃機関の冷却装置を示し、機関の要
部の側断面図である。
１・・・・・・シリンダライナ、２・・・・・・ピスト
ン、３・・・・・・ウォータジャケット、４・・・・・
・冷却水分配管、５・・・・・・水管、８，１０・・・
・・・冷却水集合管、９・・・・・・温度調節弁、１２
・・・・・・弁シート、１５・・・・・・ジャケット。The figure shows a cooling device for an internal combustion engine according to the present invention, and is a side sectional view of the main parts of the engine. 1...Cylinder liner, 2...Piston, 3...Water jacket, 4...
・Cooling water pipe, 5... Water pipe, 8, 10...
... Cooling water collection pipe, 9 ... Temperature control valve, 12
... Valve seat, 15 ... Jacket.
Claims (1)
るとともに、該木管の吐出水を導管によって温度調節弁
に導き、該温度調節弁によって前記冷却水の温度をウォ
ータジャケットの水温よりも高い設定温度に保ちながら
、導管を通して前記冷却水を排気弁シートのジャケット
に供給するように構成した内燃機関の冷却装置。A wood pipe for introducing cooling water is buried in the upper part of the cylinder liner, and the water discharged from the wood pipe is led to a temperature control valve through a conduit, and the temperature control valve sets the temperature of the cooling water to a set temperature higher than the water temperature of the water jacket. A cooling device for an internal combustion engine, wherein the cooling water is supplied through a conduit to a jacket of an exhaust valve seat while maintaining the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978078181U JPS6026178Y2 (en) | 1978-06-08 | 1978-06-08 | Internal combustion engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978078181U JPS6026178Y2 (en) | 1978-06-08 | 1978-06-08 | Internal combustion engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54178839U JPS54178839U (en) | 1979-12-18 |
| JPS6026178Y2 true JPS6026178Y2 (en) | 1985-08-07 |
Family
ID=28995028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978078181U Expired JPS6026178Y2 (en) | 1978-06-08 | 1978-06-08 | Internal combustion engine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026178Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5539135B2 (en) * | 2010-09-16 | 2014-07-02 | 本田技研工業株式会社 | Liquid cooling engine with cooling means |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837510A (en) * | 1971-09-17 | 1973-06-02 |
-
1978
- 1978-06-08 JP JP1978078181U patent/JPS6026178Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837510A (en) * | 1971-09-17 | 1973-06-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54178839U (en) | 1979-12-18 |
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