JPS6026110A - Water-cooled exhaust valve seat of internal-combustion engine - Google Patents
Water-cooled exhaust valve seat of internal-combustion engineInfo
- Publication number
- JPS6026110A JPS6026110A JP13087283A JP13087283A JPS6026110A JP S6026110 A JPS6026110 A JP S6026110A JP 13087283 A JP13087283 A JP 13087283A JP 13087283 A JP13087283 A JP 13087283A JP S6026110 A JPS6026110 A JP S6026110A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- valve seat
- water
- cooling water
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は主として水冷式内燃機関の水冷式排気弁座に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to a water-cooled exhaust valve seat for a water-cooled internal combustion engine.
従来の内燃機関、特に大型機関においては、第１図に示
す如く、排気弁３の排気弁座４を冷却水で冷却する場合
には、排気弁座４に水室６を設けている。In a conventional internal combustion engine, particularly a large engine, as shown in FIG. 1, a water chamber 6 is provided in the exhaust valve seat 4 when the exhaust valve seat 4 of the exhaust valve 3 is cooled with cooling water.
この場合、水室６を設けるために、この排気弁座４を２
つ割りに作成の」二、矢印Ｗで示す如く溶接を行って一
体にしたり、または機械加工による多数の穴明けを行っ
たりしたため、コストが嵩むという問題があった。In this case, in order to provide the water chamber 6, this exhaust valve seat 4 is
2. Since the parts were made in two parts, they were welded together as shown by arrow W, or a large number of holes were made by machining, which resulted in an increase in cost.
また、このような形状の水室６を設けた場合、排気流路
７側も水室６内燃機関の冷却水で過冷却されることにな
るため、硫酸腐蝕が発生したり、燃料残査が付着しやす
い不具合が発生ずるという問題があった。In addition, when the water chamber 6 having such a shape is provided, the exhaust flow path 7 side will also be supercooled by the cooling water of the internal combustion engine in the water chamber 6, which may cause sulfuric acid corrosion or fuel residue. There was a problem that the adhesive easily adhered to the surface.
そこで本発明は前記従来の問題点を解消し、製作コスト
が安く、かつ排気流路を過冷却しない水冷式排気弁座を
提供することを目的止してなされたものである。SUMMARY OF THE INVENTION The present invention has been made with the object of solving the above-mentioned conventional problems and providing a water-cooled exhaust valve seat that is inexpensive to manufacture and does not overcool the exhaust flow path.
即ち、本発明の内燃機関の水冷式排気弁座は、冷却水交
通管に連通ずる排気弁座冷却用の冷却水パイプを鋳ぐる
んで鋳造されることを特徴とするものである。That is, the water-cooled exhaust valve seat for an internal combustion engine of the present invention is characterized in that it is cast around a cooling water pipe for cooling the exhaust valve seat that communicates with a cooling water communication pipe.
以下図面を参照して本発明の一実施例を説明するが、第
２図は本発明の実施例における内燃機関の水冷式排気弁
座の拡大縦断面図である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an enlarged longitudinal sectional view of a water-cooled exhaust valve seat of an internal combustion engine in an embodiment of the present invention.
まず、第２図に示す排気弁座４は、第１図の従来例とほ
ぼ同様な水冷式内燃機関の排気弁座３に使用される水冷
式のものであり、この排気弁座４の排気弁３と接触する
最も冷却を要する排気弁座シート部分４Ａに接近して、
リング状の冷却水パイプ８を位置させると共に、この冷
却水パイプ８に連通ずる冷却水交通管９を複数本設けて
冷却水パイプ８内に冷却水を導入して排気弁座シート部
分４Ａを冷却するようにしている。First, the exhaust valve seat 4 shown in FIG. 2 is a water-cooled type used for the exhaust valve seat 3 of a water-cooled internal combustion engine, which is almost the same as the conventional example shown in FIG. Approaching the exhaust valve seat seat portion 4A that is in contact with the valve 3 and requires the most cooling,
In addition to positioning a ring-shaped cooling water pipe 8, a plurality of cooling water communication pipes 9 are provided that communicate with the cooling water pipe 8, and cooling water is introduced into the cooling water pipe 8 to cool the exhaust valve seat portion 4A. I try to do that.
次に、上記水冷式の排気弁座４を鋳造により製作する場
合の一例を説明すると、冷却水交通管９に冷却水パイプ
８を連通して接続させ、適正な位置に保持した状態で第
２図に２点鎖線Ａで示すごとく排気弁座４の円筒状の鋳
鋼素材の中に鋳ぐるんで鋳造する。Next, an example of manufacturing the water-cooled exhaust valve seat 4 by casting will be described. The cooling water pipe 8 is connected to the cooling water communication pipe 9, and the second pipe is held in an appropriate position. As shown by the two-dot chain line A in the figure, the exhaust valve seat 4 is cast into a cylindrical cast steel material.
その際、この冷却水パイプ８の外表面は、その鋳鋼材料
に密着して一体になるように融り込み、空洞が発生しな
いようにする。At this time, the outer surface of the cooling water pipe 8 is closely bonded to the cast steel material and melted into one piece, so that no cavities are formed.
次に、前記の円筒状の鋳鋼素材Ａから排気弁座４を削り
出しにより製作する。Next, the exhaust valve seat 4 is manufactured by cutting out the cylindrical cast steel material A described above.
なお、前記冷却水パイプ８の形状は第２図の如くリング
状のもの以外の形状でも良く、例えば半リング状のもの
を２個対向して配設しても良く、また冷却水交通管９０
本数も適宜に選定することができる。The shape of the cooling water pipe 8 may be other than the ring shape as shown in FIG. 2, for example, two half-ring shapes may be disposed facing each other.
The number can also be selected as appropriate.
従って、本発明の冷却水排気弁座では、溶接などの工程
が不要になるので大幅なコストの低減が図れると共に、
真に冷却の必要な排気弁座シート部分のみを集中的に冷
却するので排気流路の過冷却が避りれるという効果があ
る。Therefore, the cooling water exhaust valve seat of the present invention does not require processes such as welding, so it is possible to significantly reduce costs, and
Since only the exhaust valve seat portion that truly requires cooling is intensively cooled, overcooling of the exhaust flow path can be avoided.
第１図は従来の内燃機関の水冷式排気弁座周辺要部を示
す縦断面図、第２図は本発明の実施例における内燃機関
の水冷式排気弁座の拡大縦断面図である。
３・・排気弁、４・・排気弁座、
８・・冷却水パイプ、９・・冷却水交通管。
代理人 弁理°士 小 川 信 −
弁理士 野 口 賢 照
弁理士斎下和彦FIG. 1 is a vertical cross-sectional view showing the main parts around a water-cooled exhaust valve seat of a conventional internal combustion engine, and FIG. 2 is an enlarged vertical cross-sectional view of the water-cooled exhaust valve seat of an internal combustion engine according to an embodiment of the present invention. 3. Exhaust valve, 4. Exhaust valve seat, 8. Cooling water pipe, 9. Cooling water communication pipe. Agent: Patent Attorney Shin Ogawa − Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita
Claims (1)
を鋳ぐるんで鋳造されたことを特徴とする内燃機関の水
冷式排気弁座。A water-cooled exhaust valve seat for an internal combustion engine, characterized in that it is cast around a cooling water pipe for cooling the exhaust valve seat that communicates with a cooling water traffic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13087283A JPS6026110A (en) | 1983-07-20 | 1983-07-20 | Water-cooled exhaust valve seat of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13087283A JPS6026110A (en) | 1983-07-20 | 1983-07-20 | Water-cooled exhaust valve seat of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6026110A true JPS6026110A (en) | 1985-02-09 |
Family
ID=15044665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13087283A Pending JPS6026110A (en) | 1983-07-20 | 1983-07-20 | Water-cooled exhaust valve seat of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008059108A1 (en) | 2006-11-14 | 2008-05-22 | Wärtsilä Finland Oy | Valve seat insert for a piston engine |
| EP3421740A1 (en) * | 2017-06-28 | 2019-01-02 | MAN Diesel & Turbo SE | Inserted valve ring of a gas exchange valve as one-piece cast body from a cobalt chromium hard alloy |
| US11008973B2 (en) | 2017-02-24 | 2021-05-18 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
-
1983
- 1983-07-20 JP JP13087283A patent/JPS6026110A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008059108A1 (en) | 2006-11-14 | 2008-05-22 | Wärtsilä Finland Oy | Valve seat insert for a piston engine |
| EP2082119A1 (en) * | 2006-11-14 | 2009-07-29 | Wärtsilä Finland Oy | Valve seat insert for a piston engine |
| EP2082119A4 (en) * | 2006-11-14 | 2012-01-04 | Waertsilae Finland Oy | Valve seat insert for a piston engine |
| KR101413950B1 (en) * | 2006-11-14 | 2014-06-30 | 바르실라 핀랜드 오이 | Valve seat insert for a piston engine |
| US11008973B2 (en) | 2017-02-24 | 2021-05-18 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
| US11441512B2 (en) | 2017-02-24 | 2022-09-13 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
| EP3421740A1 (en) * | 2017-06-28 | 2019-01-02 | MAN Diesel & Turbo SE | Inserted valve ring of a gas exchange valve as one-piece cast body from a cobalt chromium hard alloy |
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