JPS60195316A - Exhaust valve cooling method - Google Patents
Exhaust valve cooling methodInfo
- Publication number
- JPS60195316A JPS60195316A JP5171684A JP5171684A JPS60195316A JP S60195316 A JPS60195316 A JP S60195316A JP 5171684 A JP5171684 A JP 5171684A JP 5171684 A JP5171684 A JP 5171684A JP S60195316 A JPS60195316 A JP S60195316A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- exhaust valve
- space
- valve stem
- cooling
- 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
- F01L3/12—Cooling of valves
- F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
- F01L3/18—Liquid cooling of valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は内燃機関の排気弁の冷却方法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a method for cooling an exhaust valve of an internal combustion engine.
従来例の構成とその問題点
たとえば船舶の主内燃機関においては、燃焼効率の向上
のため、その出力が増大されてきている。2. Description of the Related Art Conventional configurations and their problems For example, in the main internal combustion engines of ships, the output has been increased in order to improve combustion efficiency.
このため排気弁座のみならず排気弁本体も冷却する必要
性が生じてきている。排気弁を冷却する技術として、た
とえば特開昭５７−１９１４０８号公報がある。これに
よると、排気弁内に腹雑な形状の冷却水路を形成し、そ
の水路内に冷却水のみを流して冷却している。このため
冷却水の流れが単調になシ、冷却水が水路内を最短距離
で流れやすく、冷却効率が比較的低いものである。For this reason, it has become necessary to cool not only the exhaust valve seat but also the exhaust valve body. As a technique for cooling an exhaust valve, there is, for example, Japanese Unexamined Patent Publication No. 191408/1983. According to this, an irregularly shaped cooling channel is formed inside the exhaust valve, and only cooling water is allowed to flow into the channel for cooling. For this reason, the flow of the cooling water is monotonous, and the cooling water tends to flow in the shortest distance within the water channel, resulting in relatively low cooling efficiency.
発明の目的
本発明は上記従来の欠点を解消する排気弁冷却方法を提
供することを目的とする。OBJECTS OF THE INVENTION It is an object of the present invention to provide an exhaust valve cooling method that overcomes the above-mentioned conventional drawbacks.
発明の構成
上記目的を達成するため、本発明の排気弁冷却方法は、
内燃機関の冷却水供給口と冷却水排出口と金つなぐ機関
用冷却水経路に機関用ポンプと冷却器とを介在させ、機
関用冷却水経路の適所に連通させられたエキスパンショ
ンタンクを設けた内燃機関において、弁本体内に空間を
形成し、弁棒本体の下端を上記空間内に突出させ、弁棒
本体の上部からこの弁棒本体内を通ってその下端から空
間内にたつする冷却水の供給路と排出路とを形成し、空
間内の弁棒本体の下端よシ上部を空気室にした冷却型排
気弁棒を設け、エキスパンションタンク内の冷却水を排
気弁棒の供給路に供給し、弁用ポンプにより排気弁棒内
の冷却水を上記供給路の通過流量よりも大容量で吸引し
て前記機関用冷却水経路の適所に排出するものである。Structure of the Invention In order to achieve the above object, the exhaust valve cooling method of the present invention includes the following steps:
An internal combustion engine in which an engine pump and a cooler are interposed in the engine cooling water path that connects the cooling water supply port and cooling water outlet of the internal combustion engine, and an expansion tank is provided at an appropriate location in the engine cooling water path. In an engine, a space is formed within the valve body, the lower end of the valve stem body is made to protrude into the space, and cooling water flows from the upper part of the valve stem body through the valve stem body and from the lower end into the space. A cooling type exhaust valve rod is provided that forms a supply path and a discharge path, and has an air chamber between the lower end and the upper part of the valve rod body in the space, and the cooling water in the expansion tank is supplied to the supply path of the exhaust valve rod. The cooling water in the exhaust valve stem is sucked by the valve pump at a volume larger than the flow rate passing through the supply path, and is discharged to an appropriate location in the engine cooling water path.
実施例と作用
以下、本発明の一実施例を図に基づいて説明する。（１
）は船舶の主内燃機関であって、冷却水供給口（２）と
冷却水排出口（３ンとをつなぐ機関用冷却水経路（４）
を有し、その経路（４）には、機関用ポンプ（５）と冷
却器（６）とを介在させである。（７）は冷却水経路（
４）の排出口（３）よりも下流箇所に第１連通路（８）
を介して連通させられたエキスパンションタンク、（９
）Ｕ排気弁棒であって、次のものから悄成されている。Embodiment and Function An embodiment of the present invention will be described below with reference to the drawings. (1
) is the main internal combustion engine of the ship, and the engine cooling water path (4) connects the cooling water supply port (2) and the cooling water outlet (3).
An engine pump (5) and a cooler (6) are interposed in the path (4). (7) is the cooling water path (
4) The first communication passage (8) is located downstream of the outlet (3).
an expansion tank, (9
)U Exhaust valve stem, which is made up of the following:
すなわち叫は弁本体であって、＃Ｉ断面形状が略惰円形
に形成され、その中に縦断面形状が略惰円形の空間ａ刀
を形成しである。（６）は弁棒本体であって、その下端
（１２Ａ）は空間０１）内に突出している。曽０荀は弁
棒本体＠の上部からこの弁棒本体Ｏの内を通ってその下
端（１２Ａ）から空間０υ内にたつする冷却水の供給路
と排出路、０υは空間θυ内の弁棒本体下端（１２Ａ）
よシ上部に形成された空気室である。排気弁の製作にあ
たっては、弁棒本体（Ｉ２と弁本体００の底部（ＩＯＡ
）以外の部分とを一体的に成形した後、弁棒本体（２）
に供給路０３と排出路Ｑ４）とを形成し、次に上記底部
（ＩＯＡ）を弁本体ＱＯに溶接Ｕｔｔすることによりお
こなう。Ｑ７）は排気弁座、０１１９はシリンダカバー
である。す１はエキスパンションタンク（７）と排気弁
棒（９）の供給路（１３とをつなぐ第２連通路であって
、途中に絞り弁端を介在させである。シυは排気弁棒（
９）の排出路０４と前記冷却水経路（４）の冷却器（６
）よりも上流箇所とをつなぐ第３連通路であって、途中
に排気弁用ポンプ（イ）を介在させである。その排気弁
用ポンプ（２）の容量（Ｑ２）を前記絞シ弁■の通過流
量（Ｑｌ）よシも大容量に設定しである。（２）弼はエ
アベント管である。In other words, the valve body is formed into a substantially circular cross-sectional shape, and a space a-shaped is formed within the valve body whose longitudinal cross-sectional shape is approximately circular. (6) is a valve stem body, the lower end (12A) of which protrudes into the space 01). 0υ is the cooling water supply and discharge path that runs from the top of the valve stem body @ through the inside of the valve stem body O and from its lower end (12A) into the space 0υ, and 0υ is the valve stem in the space θυ. Lower end of main body (12A)
This is an air chamber formed in the upper part of the body. When manufacturing the exhaust valve, the valve stem body (I2) and the bottom of the valve body 00 (IOA
) After integrally molding the parts other than the valve stem body (2)
This is done by forming a supply passage 03 and a discharge passage Q4), and then welding the bottom portion (IOA) to the valve body QO. Q7) is the exhaust valve seat, and 0119 is the cylinder cover. 1 is a second communication passage connecting the expansion tank (7) and the exhaust valve rod (9) supply path (13), with a throttle valve end interposed in the middle.
9) and the cooler (6) of the cooling water path (4).
) is a third communication passage connecting the upstream part of the exhaust valve (a) with an exhaust valve pump (a) interposed in the middle. The capacity (Q2) of the exhaust valve pump (2) is set to be larger than the flow rate (Ql) passing through the throttle valve (2). (2) The upper part is the air vent pipe.
以下、上記信成における作用について説明する。The effects of the above Shinsei will be explained below.
主内燃機関（１）を作動させると共に両ポンプ（５）＠
をも作動させると、冷却水排出口（３）から主内燃機関
（１）の外へ排出された高温の冷却水は機関用ポンプ（
５）に吸引でれて冷却器（６）内に送シ込まれて冷却さ
れ、その冷却水は冷却水供給口（２）から主内燃機関（
１）内に供給される。また冷却水経路（４）内の冷却水
の増減は第１連通路（８）を介してエキスパンションタ
ンク（７）によシ調整される。さらにエキスパンション
タンク（７）内の冷却水の水頭圧にょシ第２連通路Ｑｌ
および供給路Ｑを介して空間Ｑυ内に冷却水が出路０勺
が遮断され、それ以上空間Ｑυ内の空気が逃けられなく
なって空気室Ｃ１Ｇに空気が残る。そして内燃機関の作
動によシ排気弁が上下動すると、それによシ空間（ｌη
内の冷却水が波打ち、撹乱され、弁本体叫と冷却水との
接触が促進される。したがって冷却効率の高いものであ
る。また弁本体ｕｃＪは縦断面形状略楕円形で、しかも
その各部の肉厚が略均−であるから、全体的に均一に熱
伸縮すると共に強度大であり、各部がほぼ均等に冷却さ
れ、冷却むらが生じないものである。従って弁と弁座と
のシール性も良好であシ、従来よりも市販を軽減させる
ことができる。次に排気弁用ポンプに）により空間０〃
内の冷却水が排出路０４１および第３３ａ通路０１を介
して吸引され、冷却水経路（４）内に排出される。ここ
で排気弁用ポンプ（財）の容量（Ｑ２）を絞り弁（７）
の通過流量（Ｑ□）よりも大容量に設定しであるから、
冷却水の空間ａυ内に供給される供給量よりもそれから
排出される排出量の方が多くなる。したがって空間Ｑｖ
内において液面（５）が弁棒本体下端（１２Ａ）に接す
ると、その空間αυ内の冷却水が吸引されるが、その吸
引がしばらく続くと、液面囚が下がシ、下端（１２Ａ）
に接しなくなシ、空間Ωυ内の冷却水が吸引されなくな
る。そして筐た液面囚が上昇して下端（１２Ａ）に接す
ると、吸−°が始まる。While operating the main internal combustion engine (1), both pumps (5) @
When the engine is also operated, the high temperature cooling water discharged from the cooling water outlet (3) to the outside of the main internal combustion engine (1) is pumped to the engine pump (
5) and is sent into the cooler (6) where it is cooled, and the cooling water is supplied from the cooling water supply port (2) to the main internal combustion engine (
1) Supplied within. Further, the increase or decrease of the cooling water in the cooling water path (4) is adjusted by the expansion tank (7) via the first communication path (8). In addition, the head pressure of the cooling water in the expansion tank (7) is determined by the second communication passage Ql.
Then, the outlet of the cooling water into the space Qυ via the supply path Q is cut off, and the air in the space Qυ can no longer escape, leaving air in the air chamber C1G. When the exhaust valve moves up and down due to the operation of the internal combustion engine, it causes a space (lη
The cooling water inside the valve is rippled and disturbed, promoting contact between the valve body and the cooling water. Therefore, the cooling efficiency is high. In addition, the valve body ucJ has an approximately elliptical vertical cross-sectional shape, and the wall thickness of each part is approximately uniform, so it expands and contracts evenly with heat as a whole, and has great strength, and each part is cooled almost evenly. No unevenness occurs. Therefore, the sealing performance between the valve and the valve seat is also good, and the commercial cost can be reduced compared to the conventional method. Next, the space is 0 by the exhaust valve pump).
The cooling water inside is sucked through the discharge path 041 and the 33a-th passage 01, and is discharged into the cooling water path (4). Here, the capacity (Q2) of the exhaust valve pump (goods) is adjusted to the throttle valve (7).
Since it is set to a larger capacity than the passing flow rate (Q□),
The amount of water discharged from the cooling water space aυ is greater than the amount of supply that is fed into the space aυ of the cooling water. Therefore, the space Qv
When the liquid level (5) comes into contact with the lower end (12A) of the valve stem body inside, the cooling water in the space αυ is sucked, but if this suction continues for a while, the liquid level becomes lower and the lower end (12A) )
, the cooling water in the space Ωυ will no longer be sucked in. When the liquid level in the housing rises and touches the lower end (12A), suction begins.
このように内燃機関（１）の作動中、空間（１１）内の
冷却水の吸引が断続的におこなわれ、空気室（ト）内に
空気が常に存在するようにすることができるものである
。ここで、もしも、空間０１）内の冷却水の吸引が連続
的におこなわれると、その連続的に流れる冷却水によシ
空気室０５内の空気が流失させられやすく、そのように
なると、空気室Ｑ５内に空気を供給することができなく
なり、従来の排気弁棒と同じになってしまう。本発明の
実施例によれば、かかる＊１ｉＪＡｔｌｉ生じない。In this way, while the internal combustion engine (1) is operating, the cooling water in the space (11) is intermittently drawn in, making it possible to ensure that air is always present in the air chamber (G). . Here, if the cooling water in the space 01) is drawn continuously, the air in the air chamber 05 is likely to be washed away by the continuously flowing cooling water. It is no longer possible to supply air into the chamber Q5, and the valve stem becomes the same as the conventional exhaust valve stem. According to the embodiment of the present invention, such *1iJAtli does not occur.
発明の効果
以上述べたごとく本発明によれば、弁本体の空間内に供
給される供給量よりもそれから排出される排出訊の方を
多くしであるから、上記空間内の冷却水の吸引が断続的
におこなわれ、空気室内に空気が常に存在するようにす
ることができるものである。そして内燃機関の作ａＫよ
り排気弁が上下動すると、それにより空間内の冷却水が
波打ち、撹乱され、弁本体と冷却水との接触が促進され
、冷却効率が高いものであり、し力・も、その効率が持
続するものである。Effects of the Invention As described above, according to the present invention, the amount of discharged water discharged from the space of the valve body is greater than the amount of supply supplied into the space of the valve body, so that the suction of cooling water in the space is reduced. This is done intermittently to ensure that air is always present in the air chamber. When the exhaust valve moves up and down due to the operation of the internal combustion engine, the cooling water in the space is rippled and disturbed, promoting contact between the valve body and the cooling water, resulting in high cooling efficiency. The efficiency is also sustainable.
図は本発明の一実施例を示し、第１図は概略説明図、第
２図は排気弁棒の縦断面図である。
（１）・・・主内燃機関、（２）・・・冷却水供給口、
（３）・・・冷却Ｊ（排出口、（４）・・・機関用冷却
水経路、（５）・・・機関用オニ／ フ、（（ｉ）・°
・冷却Ｈｇ 、（７Ｕ・・・エキスパンションタンク、
（９）・・・排気弁棒、Ｃ１Ｏ・・・弁本体、０υ・・
・空間、０４・・・弁棒本体、（１２Ａ）・・・下端、
０→・・・供給路、Ｑ４）・・・排出路、ｕ５・・・空
気室、（２）・・・排気弁用ポンプ代理人 森 本 義
、弘
第１図
第２図
１
／ＵｌｉThe figures show one embodiment of the present invention, with FIG. 1 being a schematic explanatory diagram and FIG. 2 being a longitudinal sectional view of an exhaust valve stem. (1)...Main internal combustion engine, (2)...Cooling water supply port,
(3)...Cooling J (discharge port, (4)...Engine cooling water path, (5)...Engine on/off, ((i)・°
・Cooling Hg, (7U...expansion tank,
(9)...Exhaust valve stem, C1O...Valve body, 0υ...
・Space, 04...Valve stem body, (12A)...Lower end,
0→... Supply path, Q4)... Discharge path, u5... Air chamber, (2)... Exhaust valve pump agent Yoshihiro Morimoto Figure 1 Figure 2 Figure 1 /Uli
Claims (1)
機関用冷却水経路に機関用ポンプと冷却器とを介在させ
、機関用冷却水経路の適所に連通させられたエキスパン
ションタンクを２ｆｆた内燃機関において、弁本体内に
空間を形成し、弁棒本体の下端を上記空間内に突出させ
、弁棒本体の上部からこの弁棒本体内を通ってその下端
から空間内にたつする冷却水の供給路と排出路とを形成
し、空間内の弁棒本体の下端よシ上部を空気室にした冷
却型排気弁棒を設け、エキスパンションタンク内の冷却
水を排気弁棒の供給路に供給し、排気路を介して排気弁
用ポンプにより排気弁棒内の冷却水を上記供給路の通過
流員よりも大容量で収用して１１ノ記機関用冷却水経路
の適所に排出することを特徴とする排気弁冷却方法。l An engine pump and a cooler are interposed in the engine cooling water path that connects the cooling water supply port and the cooling water outlet of the internal combustion engine, and a 2ff expansion tank is connected to an appropriate location in the engine cooling water path. In an internal combustion engine, a space is formed within the valve body, the lower end of the valve stem body projects into the space, and cooling water flows from the upper part of the valve stem body through the valve stem body and from the lower end into the space. A cooling type exhaust valve stem is provided, which forms a supply path and a discharge path, and the lower end and upper part of the valve stem body in the space are made into air chambers, and the cooling water in the expansion tank is supplied to the supply path of the exhaust valve stem. The cooling water in the exhaust valve stem is collected by the exhaust valve pump via the exhaust passage in a larger capacity than the flow rate passing through the supply passage, and is discharged to an appropriate location in the engine cooling water passage described in No. 11. Characteristic exhaust valve cooling method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5171684A JPS60195316A (en) | 1984-03-16 | 1984-03-16 | Exhaust valve cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5171684A JPS60195316A (en) | 1984-03-16 | 1984-03-16 | Exhaust valve cooling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60195316A true JPS60195316A (en) | 1985-10-03 |
Family
ID=12894610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5171684A Pending JPS60195316A (en) | 1984-03-16 | 1984-03-16 | Exhaust valve cooling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60195316A (en) |
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| JP2004144090A (en) * | 2002-10-26 | 2004-05-20 | Man B & W Diesel As | Valve cooling method and its device |
| JP2010031843A (en) * | 2008-07-24 | 2010-02-12 | Man Diesel Se | Cylinder head structure having valve cooling device and valve lubricating device |
| WO2011110308A3 (en) * | 2010-03-11 | 2011-11-10 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Valve assembly |
| CN106246320A (en) * | 2016-08-25 | 2016-12-21 | 国网山西省电力公司大同供电公司 | A kind of device reducing engine breathing door temperature and control method thereof |
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-
1984
- 1984-03-16 JP JP5171684A patent/JPS60195316A/en active Pending
Cited By (10)
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|---|---|---|---|---|
| JP2004144090A (en) * | 2002-10-26 | 2004-05-20 | Man B & W Diesel As | Valve cooling method and its device |
| JP4509529B2 (en) * | 2002-10-26 | 2010-07-21 | エムエーエヌ・ディーゼル・フィリアル・アフ・エムエーエヌ・ディーゼル・エスイー・ティスクランド | Method and apparatus for cooling a valve |
| JP2010031843A (en) * | 2008-07-24 | 2010-02-12 | Man Diesel Se | Cylinder head structure having valve cooling device and valve lubricating device |
| WO2011110308A3 (en) * | 2010-03-11 | 2011-11-10 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Valve assembly |
| CN102791966A (en) * | 2010-03-11 | 2012-11-21 | 曼柴油机涡轮机欧洲股份公司曼柴油机涡轮机德国分公司 | Valve assembly |
| JP2013522513A (en) * | 2010-03-11 | 2013-06-13 | マン ディーゼル アンド ターボ フィリアル エーエフ マン ディーゼル アンド ターボ エスイー ティスクランド | Valve assemblies, valve housings, valves, guide bushings and engines |
| KR101384086B1 (en) * | 2010-03-11 | 2014-04-09 | 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 | Valve assembly |
| CN106246320A (en) * | 2016-08-25 | 2016-12-21 | 国网山西省电力公司大同供电公司 | A kind of device reducing engine breathing door temperature and control method thereof |
| CN106246320B (en) * | 2016-08-25 | 2019-02-15 | 国网山西省电力公司大同供电公司 | A kind of device and its control method reducing engine breathing door temperature |
| JP2018048634A (en) * | 2016-09-20 | 2018-03-29 | マン・ディーゼル・アンド・ターボ・エスイー | Valve body for gas exchange valve, gas exchange valve and internal combustion engine |
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