JPS5823931Y2 - Internal combustion engine cooling system - Google Patents
Internal combustion engine cooling systemInfo
- Publication number
- JPS5823931Y2 JPS5823931Y2 JP1978006542U JP654278U JPS5823931Y2 JP S5823931 Y2 JPS5823931 Y2 JP S5823931Y2 JP 1978006542 U JP1978006542 U JP 1978006542U JP 654278 U JP654278 U JP 654278U JP S5823931 Y2 JPS5823931 Y2 JP S5823931Y2
- Authority
- JP
- Japan
- Prior art keywords
- head
- cooling water
- guide tube
- 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係り、殊に水冷式内燃機
関のシリンダーヘッドの冷却装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for an internal combustion engine, and more particularly to a cooling device for a cylinder head of a water-cooled internal combustion engine.
近年、内燃機関の高出力化に伴い、シリンダー径の増大
に即応した大口径の吸・排気ポートを設けざるを得なく
なっている。In recent years, with the increase in the output of internal combustion engines, it has become necessary to provide large-diameter intake and exhaust ports to accommodate increases in cylinder diameter.
その結果、シリンダーヘッド内に於けるウォーターギヤ
ラリは局部的に極めて狭くなっている。As a result, the water gear within the cylinder head is locally extremely narrow.
殊に、副燃焼室を有する機関などにあっては、この副燃
焼室と吸°排気ポートとが接近してシリンダー下面に開
口するため、この付近に於ける上記ギヤラリは十分な流
路を得ることができずに非常に狭いものとなってしまっ
ている。In particular, in engines having a sub-combustion chamber, the sub-combustion chamber and the intake/exhaust port are close to each other and open at the bottom of the cylinder, so the gear assembly in this area has a sufficient flow path. This has resulted in a very narrow space.
従ってその部分の冷却水流路抵抗は極めて大きく、殆ん
どの冷却水は十分な流路の残されているヘッド上面を経
て流出してしまい、最も熱負荷の大きい上記ヘッド下面
が思う様に冷却されない様なことが起きている。Therefore, the resistance of the cooling water flow path in that area is extremely large, and most of the cooling water flows out through the upper surface of the head, where a sufficient flow path remains, so that the lower surface of the head, which has the highest heat load, is not cooled as expected. something is happening.
そして、この様な現象のはなはだしい場合には、ヘッド
の亀裂損傷といった最悪の事態にまで到っている。If this phenomenon is severe, it can even lead to the worst situation, such as cracking and damage to the head.
本考案は上述の如き問題点に鑑みなされたものであり、
以下図示せる本考案の一実施例をもって説明する。This invention was created in view of the problems mentioned above.
An embodiment of the present invention shown in the drawings will be explained below.
第１図及び第２図に於て、１はシリンダーヘッド、２は
シリンダーで、ヘッド１の一側面１１からシリンダー２
に向って吸気ボート３がまたヘッド１の他側面１２から
は排気ポート４が延びている。In Figures 1 and 2, 1 is a cylinder head, 2 is a cylinder, and the cylinder 2 is connected from one side 11 of the head 1 to the cylinder 2.
An intake boat 3 extends toward the head 1, and an exhaust port 4 extends from the other side 12 of the head 1.
また５は副燃焼室、６はヘッド下面１３に形成された冷
却水入口、７はヘッド上面１４近傍の側面１２に設けら
れた冷却水出口であって、ヘッド１内にウォーターギヤ
ラリ８が構成される。Further, 5 is an auxiliary combustion chamber, 6 is a cooling water inlet formed on the head lower surface 13, 7 is a cooling water outlet provided on the side surface 12 near the head upper surface 14, and a water gear rally 8 is configured in the head 1. be done.
１５はガイドチューブであって、その一端は上記冷却水
出ロアに固定されており、他端１６は前述の最も熱負荷
の大きい所、即ち副燃焼室５、吸気弁３１、排気弁４１
に囲まれたウォーターギヤラリ−８内に延びていて、該
端部１６はヘッド下面１３との間に適当な大きさの冷却
水流路１７を残している。Reference numeral 15 denotes a guide tube, one end of which is fixed to the lower cooling water outlet, and the other end 16 is connected to the areas with the greatest heat load, namely the auxiliary combustion chamber 5, the intake valve 31, and the exhaust valve 41.
The end portion 16 leaves a cooling water passage 17 of an appropriate size between the end portion 16 and the lower surface 13 of the head.
この場合、該ガイドチューブ１５は、シリンダーヘッド
１の形成後、上記出ロアより挿入され、その端部１６が
最も熱負荷の大なる箇所へ達する如く設けられる訳であ
るが、該チューブ１５は管体となっている紋、それを適
切に彎曲させることによりポート等と干渉することなく
吸・排気孔３１．４１間をぬってそこえ延ばすことがで
きる。In this case, the guide tube 15 is inserted from the lower outlet after the cylinder head 1 is formed, and is provided so that its end 16 reaches the location where the heat load is greatest. By appropriately curving the crest that forms the body, it can be extended between the intake and exhaust holes 31 and 41 without interfering with ports, etc.
また１８はガイドチューブ１５の出口近傍の最上部に形
成した気泡抜孔であって、これはヘッド上面１４に向く
如く穿孔してあり、ヘッド上面に浮上する気？＠を適窃
に排出することができる様になっている。Reference numeral 18 denotes an air bubble vent hole formed at the top near the exit of the guide tube 15, which is perforated so as to face the head upper surface 14, so that air bubbles floating on the head upper surface can be removed. It is now possible to eject @ for plagiarism.
この様に構成された本考案冷却装置にあってはガイドチ
ューブ１５が冷却水出ロアをシリンダーヘッド１内のヘ
ッド下面１３まで延長した如き構造を呈するから、実質
的に冷却水はヘッド下面１３から吸い出されることにな
る。In the cooling device of the present invention constructed in this way, the guide tube 15 has a structure in which the lower cooling water outlet extends to the head lower surface 13 in the cylinder head 1, so that the cooling water is substantially flowed from the head lower surface 13. It will be sucked out.
よって冷却水人口６からウォーターギヤラリ８に流入し
た冷却水は、例え大きな流路抵抗かあっても最も熱負荷
の大きい副燃焼室５、吸気弁３１．排気弁４１を開口す
るヘッド下面１３に沿って流動後、冷却水出ロアより排
出されることになり、極めて効率良くシリンダーヘッド
１を冷却することができることになる。Therefore, even if there is a large flow resistance, the cooling water flowing into the water gear gallery 8 from the cooling water population 6 flows through the sub-combustion chamber 5, the intake valve 31, which has the largest heat load. After flowing along the head lower surface 13 that opens the exhaust valve 41, the cooling water is discharged from the lower cooling water outlet, making it possible to cool the cylinder head 1 extremely efficiently.
また、機関組立後の冷却水注入時にギヤラリ−８内にあ
る空気、あるいは冷却水が気化して発生する気泡などは
、ガイドチューブ１５内に流れる冷却水の吸い出し効果
により、気泡抜孔１８から適切に吸引され外部へ排出さ
れる。In addition, when cooling water is injected after engine assembly, air in the gear rally 8 or air bubbles generated by vaporization of the cooling water can be properly removed from the bubble vent hole 18 by the suction effect of the cooling water flowing into the guide tube 15. It is sucked in and discharged to the outside.
そして該ガイドチューブ１５は、シリンダーヘッド１の
側面１２から冷却水出ロアを介して上記最も熱負荷の大
きな所へ挿入することにより配設される故、その構造は
極めて簡単であって実用的である。Since the guide tube 15 is installed by being inserted from the side surface 12 of the cylinder head 1 through the lower cooling water outlet to the location where the heat load is greatest, its structure is extremely simple and practical. be.
第１図は本考案の一実施例を示すシリンダーヘッドの横
断面概略図、第２図は第１図のＡ−Ａ断面図である。
１・・・・・・シリンダーヘッド、２・・・・・・シリ
ンダー、３・・・・・・吸気ポート、４・・・・・・排
気ポート、５・・・・・・副燃焼室、６・・・・・・冷
却水人口、７・・・・・・冷却水出口、８・・・・・・
ウォーターギヤラリ、１１，１２・・・・・・側面、１
３・・・・・・ヘッド下面、１４・・・・・・ヘッド上
面、１５・・・・・・ガイドチューブ、１６・・・・・
・端部、１１・・・・・＝冷却水流路、３１・・・・・
・吸気弁、４１・・・・・・排気弁。FIG. 1 is a schematic cross-sectional view of a cylinder head showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1... Cylinder head, 2... Cylinder, 3... Intake port, 4... Exhaust port, 5... Sub-combustion chamber, 6...Cooling water population, 7...Cooling water outlet, 8...
Water gear, 11, 12...Side, 1
3...Bottom surface of the head, 14...Top surface of the head, 15...Guide tube, 16...
・End part, 11...=cooling water flow path, 31...
・Intake valve, 41...Exhaust valve.
Claims (1)
ヘッド１の一側面上方に冷却水出口１を設けるとともに
同ヘッドの下面１３に冷却水人口６を形成し、該出口Ｉ
から上記機関の最も熱負荷の大きい部分のヘッド下面１
３に向って延びるガイドチューブ１５を吸・排気弁３１
．４１間をぬう如く挿入し、且つ該ガイドチューブ１５
の開口端部１６がヘッド下面１３との間に適切なへだた
りを有して開口する様になし、更にこのガイドチューブ
１５の最上部にヘッド上面１４に向く気泡抜孔１８を穿
孔し、もって上記冷却水人口６から流入した冷却水をヘ
ッド下面１３の最も熱負荷の大なる部分よりガイドチュ
ーブ１５を介して冷却水出口１から流出し且つヘッド上
面１４に浮上せる気泡を上記気泡抜孔１８からガイドチ
ューブを介して外部に排出し得る様にしたことを特徴と
する内熱機関の冷却装置。In a cylinder head of a water-cooled internal combustion engine, a cooling water outlet 1 is provided above one side of the cylinder head 1, and a cooling water population 6 is formed on the lower surface 13 of the head.
From the head lower surface 1 of the part with the largest heat load of the above engine
The guide tube 15 extending toward 3 is connected to the intake/exhaust valve 31
．． 41, and the guide tube 15
The opening end 16 of the guide tube 15 is made to open with an appropriate gap between it and the head lower surface 13, and an air bubble vent hole 18 facing the head upper surface 14 is bored at the top of the guide tube 15. The cooling water flowing in from the cooling water population 6 flows out from the cooling water outlet 1 through the guide tube 15 from the part of the head lower surface 13 where the heat load is greatest, and the air bubbles floating to the head upper surface 14 are removed from the air bubble vent hole 18. A cooling device for an internal heat engine, characterized in that the cooling device can be discharged to the outside via a guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978006542U JPS5823931Y2 (en) | 1978-01-23 | 1978-01-23 | Internal combustion engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978006542U JPS5823931Y2 (en) | 1978-01-23 | 1978-01-23 | Internal combustion engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53101127U JPS53101127U (en) | 1978-08-15 |
| JPS5823931Y2 true JPS5823931Y2 (en) | 1983-05-23 |
Family
ID=28693249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978006542U Expired JPS5823931Y2 (en) | 1978-01-23 | 1978-01-23 | Internal combustion engine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823931Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724533U (en) * | 1971-04-09 | 1972-11-18 |
-
1978
- 1978-01-23 JP JP1978006542U patent/JPS5823931Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724533U (en) * | 1971-04-09 | 1972-11-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53101127U (en) | 1978-08-15 |
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