JPH06330812A - Cylinder head for internal combustion engine - Google Patents
Cylinder head for internal combustion engineInfo
- Publication number
- JPH06330812A JPH06330812A JP12424493A JP12424493A JPH06330812A JP H06330812 A JPH06330812 A JP H06330812A JP 12424493 A JP12424493 A JP 12424493A JP 12424493 A JP12424493 A JP 12424493A JP H06330812 A JPH06330812 A JP H06330812A
- Authority
- JP
- Japan
- Prior art keywords
- passage
- cooling water
- combustion chamber
- cylinder head
- deck
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1816—Number of cylinders four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、内燃機関のシリンダ
ヘッドに関し、詳しくはその冷却水通路構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder head of an internal combustion engine, and more particularly to a cooling water passage structure thereof.
【０００２】[0002]
【従来の技術】内燃機関のシリンダヘッドには、図７〜
図９のように各気筒毎に燃焼室１、吸気ポート２、排気
ポート３、点火プラグの挿着筒４等が、気筒間に動弁機
構の軸受部５等が形成されると共に、これらの燃焼室１
側のロアデッキ６と動弁機構側のアッパデッキ７間に冷
却水が通る冷却水通路８が形成されている。2. Description of the Related Art A cylinder head of an internal combustion engine is shown in FIG.
As shown in FIG. 9, a combustion chamber 1, an intake port 2, an exhaust port 3, a spark plug insertion cylinder 4 and the like are formed for each cylinder, and a bearing portion 5 of a valve mechanism is formed between the cylinders. Combustion chamber 1
A cooling water passage 8 through which cooling water passes is formed between the lower deck 6 on the side and the upper deck 7 on the side of the valve mechanism.
【０００３】この冷却水通路８には、ウォータポンプか
らの冷却水が機関前端側の入口部９より流入され、気筒
列方向に流れて各部を冷却しながら、機関後端側の出口
部１０より排出されるようになっている（特開平４ー８
１５５３号公報等参照）。Cooling water from a water pump flows into the cooling water passage 8 from an inlet portion 9 on the front end side of the engine, flows in the cylinder row direction to cool each portion, and from an outlet portion 10 on the rear end side of the engine. It is designed to be discharged (Japanese Patent Laid-Open No. 4-8
1553, etc.).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のシリンダヘッドにあっては、冷却水通路８内
に吸気ポート２、排気ポート３等が配設されているた
め、各部に向かって流れる冷却水が互いに干渉し合い、
このため冷却の必要な燃焼室１壁側に要求される流量の
冷却水は確保されにくい。However, in such a conventional cylinder head, since the intake port 2, the exhaust port 3 and the like are arranged in the cooling water passage 8, the flow flows toward each part. The cooling waters interfere with each other,
Therefore, it is difficult to secure the required amount of cooling water on the wall side of the combustion chamber 1 that needs cooling.
【０００５】また、気筒間の冷却水通路８の断面積が大
きく、このためかえって燃焼室１壁側を流れる冷却水の
流速が低下してしまい、効率的な冷却が行いにくいとい
った問題がある。。Further, the cross-sectional area of the cooling water passage 8 between the cylinders is large, and therefore, the flow velocity of the cooling water flowing on the wall side of the combustion chamber 1 is reduced, which makes it difficult to perform efficient cooling. .
【０００６】この発明は、このような問題点を解決する
ことを目的としている。The present invention aims to solve such problems.
【０００７】[0007]
【課題を解決するための手段】第１の発明は、冷却水を
通すシリンダヘッド内の冷却水通路を、燃焼室側のロア
デッキに沿う下部通路と動弁機構側のアッパデッキに沿
う上部通路とに隔成する隔壁を設ける。According to a first aspect of the invention, a cooling water passage in a cylinder head for passing cooling water is provided in a lower passage along a combustion chamber side lower deck and an upper passage along a valve mechanism side upper deck. A dividing wall is provided.
【０００８】第２の発明は、前記隔壁が、吸、排気ポー
ト部位にて、前記上部通路をポート上壁側に、前記下部
通路をポート下壁側に分けるように形成する。In a second aspect of the invention, the partition wall is formed so that the upper passage is divided into the port upper wall side and the lower passage is divided into the port lower wall side at the intake and exhaust port portions.
【０００９】第３の発明は、前記上部通路端と下部通路
端とを接続し、上部通路が下部通路の後流側になるよう
に形成する。According to a third aspect of the present invention, the upper passage end and the lower passage end are connected to each other, and the upper passage is formed on the downstream side of the lower passage.
【００１０】[0010]
【作用】第１の発明は、冷却水通路を燃焼室側のロアデ
ッキに沿う下部通路と動弁機構側のアッパデッキに沿う
上部通路とに隔成したため、燃焼室壁側に要求流量、要
求流速の冷却水を流すことができる。According to the first aspect of the invention, the cooling water passage is divided into a lower passage along the lower deck on the combustion chamber side and an upper passage along the upper deck on the valve mechanism side. Cooling water can flow.
【００１１】第２の発明は、前記隔壁が、吸、排気ポー
ト上壁側に上部通路を、吸、排気ポート下壁側に下部通
路を分けるようにしたため、ポートの下流側部分での冷
却水の淀みがなくなり、通路抵抗が低減する。In the second invention, the partition wall divides the upper passage on the upper wall side of the intake / exhaust port and the lower passage on the lower wall side of the intake / exhaust port, so that the cooling water in the downstream portion of the port is divided. There is no stagnation and the passage resistance is reduced.
【００１２】第３の発明は、前記上部通路を下部通路の
後流にしたため、各通路に冷却水を分配することなく、
冷却水全量を下部通路に流すことができる。According to the third aspect of the invention, since the upper passage is located downstream of the lower passage, cooling water is not distributed to each passage,
The entire cooling water can flow to the lower passage.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は４気筒エンジンのシリンダヘッドの
平面図、図２〜図４はこのシリンダヘッドの各断面図
で、２０は燃焼室、２１は吸気ポート、２２は排気ポー
ト、２３は点火プラグの挿着筒、２４は動弁機構の軸受
部である。FIG. 1 is a plan view of a cylinder head of a four-cylinder engine, and FIGS. 2 to 4 are sectional views of the cylinder head. 20 is a combustion chamber, 21 is an intake port, 22 is an exhaust port, and 23 is an ignition plug. And a reference numeral 24 is a bearing portion of the valve mechanism.
【００１５】シリンダヘッド内には、燃焼室２０側のロ
アデッキ２５と動弁機構側のアッパデッキ２６間に形成
される冷却水通路を、ロアデッキ２５に沿う下部通路２
７と、アッパデッキ２６に沿う上部通路２８とに分割す
る隔壁２９が形成される。In the cylinder head, a cooling water passage formed between the lower deck 25 on the combustion chamber 20 side and the upper deck 26 on the valve mechanism side is provided with a lower passage 2 along the lower deck 25.
7 and an upper passage 28 along the upper deck 26 is formed with a partition wall 29.
【００１６】この隔壁２９は、吸、排気ポート２１、２
２の部位にて、下部通路２７をポート下壁３０，３１側
に、上部通路２８をポート上壁３２，３３側に分ける高
さに、即ちポート下壁３０，３１側に隔壁２９の下面
が、ポート上壁３２，３３側に隔壁２９の上面が滑らか
につながるように形成される。The partition wall 29 has intake and exhaust ports 21, 2
At the position of 2, the lower passage 27 is divided into the lower port walls 30 and 31 and the upper passage 28 is divided into upper port walls 32 and 33, that is, the lower face of the partition wall 29 is located on the lower port walls 30 and 31 side. The upper surface of the partition wall 29 is formed so as to be smoothly connected to the port upper walls 32 and 33.
【００１７】エンジンの前端側には、それぞれ下部通路
２７と上部通路２８の入口部３４，３５が形成され、エ
ンジンの後端側には、下部通路２７と上部通路２８の合
流出口部３６が形成される。Inlet portions 34 and 35 of the lower passage 27 and the upper passage 28 are formed at the front end side of the engine, and a merge outlet portion 36 of the lower passage 27 and the upper passage 28 is formed at the rear end side of the engine. To be done.
【００１８】入口部３４，３５より、ウォータポンプ
（図示しない）からの冷却水が流入される。Cooling water from a water pump (not shown) flows in through the inlet portions 34 and 35.
【００１９】なお、３７は動弁機構にオイルを送るオイ
ル通路で、動弁機構を潤滑したオイルはアッパデッキ２
６上を流れてオイルパン側に回収される。Reference numeral 37 is an oil passage for sending oil to the valve operating mechanism, and the oil lubricating the valve operating mechanism is used for the upper deck 2
6 and then collected on the oil pan side.
【００２０】このような構成のため、入口部３４，３５
より流入した冷却水は、それぞれ下部通路２７、上部通
路２８を独立に流れるので、燃焼室２０壁側の下部通路
２７に上部通路２８よりも多量の冷却水を流すことが可
能である。Due to this structure, the inlet portions 34, 35
The more inflowing cooling water independently flows through the lower passage 27 and the upper passage 28, respectively, so that a larger amount of cooling water than the upper passage 28 can flow into the lower passage 27 on the wall side of the combustion chamber 20.
【００２１】この場合、入口部３４，３５の口径を変え
ることで、下部通路２７に多量の冷却水を分配できる。In this case, a large amount of cooling water can be distributed to the lower passage 27 by changing the diameters of the inlet portions 34 and 35.
【００２２】また、隔壁２９を設けた分、通路断面積が
小さくなり、このため冷却水の流速が速くなると共に、
隔壁２９を、ポート下壁３０，３１側に下部通路２７
を、ポート上壁３２，３３側に上部通路２８を分ける高
さに設けたため、ポート２１，２２の下流側部分での冷
却水の淀みがなくなって、通路抵抗が大きく減少するの
である。Further, since the partition wall 29 is provided, the passage cross-sectional area is reduced, so that the flow velocity of the cooling water is increased and
The partition wall 29 is provided on the side of the lower ports 30 and 31 of the lower passage 27.
Is provided at the height that divides the upper passage 28 on the side of the port upper walls 32 and 33, the stagnation of the cooling water in the downstream portion of the ports 21 and 22 is eliminated, and the passage resistance is greatly reduced.
【００２３】したがって、最も強い冷却を必要とする燃
焼室２０壁側に要求量、要求流速の冷却水を流すことが
でき、効率良くかつ十分な冷却を行える。Therefore, the required amount and the required flow velocity of the cooling water can be made to flow to the wall of the combustion chamber 20 that requires the strongest cooling, and efficient and sufficient cooling can be performed.
【００２４】なお、オイル通路３７やアッパデッキ２６
上のオイルは、上部通路２８を流れる少量の冷却水によ
って冷却を行える。The oil passage 37 and the upper deck 26
The upper oil can be cooled by a small amount of cooling water flowing through the upper passage 28.
【００２５】図５は本発明の他の実施例を示すもので、
上部通路４０を下部通路４１の後流となるように形成し
たものである。FIG. 5 shows another embodiment of the present invention.
The upper passage 40 is formed so as to follow the lower passage 41.
【００２６】この場合、エンジン前端側に下部通路４１
の入口部４２を形成し、エンジン後端側の下部通路４１
端と上部通路４０端とを接続すると共に、上部通路４０
のエンジン前端側に出口部４３を形成する。In this case, the lower passage 41 is provided on the front end side of the engine.
Of the lower passage 41 on the rear end side of the engine.
The end and the upper passage 40 are connected to each other, and the upper passage 40
An outlet portion 43 is formed on the front end side of the engine.
【００２７】これによれば、下部通路４１と上部通路４
０に冷却水を分配することなく、ウォータポンプからの
すべての流量が下部通路４１に流れ、燃焼室２０壁側を
十分により効率良く冷却できる。According to this, the lower passage 41 and the upper passage 4
All the flow rate from the water pump flows to the lower passage 41 without distributing the cooling water to 0, and the wall side of the combustion chamber 20 can be cooled sufficiently more efficiently.
【００２８】図６は同じく本発明の他の実施例を示すも
ので、上部通路５０の出口部５１（または入口部５２）
に遮断弁５３を設け、エンジンの始動冷間時に遮断弁５
３を閉じるようにしたものである。５４はウォータポン
プを示す。FIG. 6 also shows another embodiment of the present invention, which is an outlet portion 51 (or an inlet portion 52) of the upper passage 50.
A shut-off valve 53 is provided on the shut-off valve 5 when the engine is cold.
It is designed so that 3 is closed. Reference numeral 54 represents a water pump.
【００２９】始動冷間時に上部通路５０への冷却水を遮
断すれば、暖機を促進できる。If the cooling water to the upper passage 50 is shut off during cold start, warming up can be promoted.
【００３０】[0030]
【発明の効果】以上のように第１の発明は、冷却水を通
すシリンダヘッド内の冷却水通路を、燃焼室側のロアデ
ッキに沿う下部通路と動弁機構側のアッパデッキに沿う
上部通路とに隔成する隔壁を設けたので、燃焼室壁側に
要求量、要求流速の冷却水を流すことができ、的確な冷
却を行える。As described above, in the first aspect of the present invention, the cooling water passage in the cylinder head for passing the cooling water is provided in the lower passage along the lower deck on the combustion chamber side and the upper passage along the upper deck on the valve mechanism side. Since the dividing wall is provided, the required amount and the required flow velocity of the cooling water can be made to flow to the side of the combustion chamber wall, and accurate cooling can be performed.
【００３１】第２の発明は、隔壁が、吸、排気ポート上
壁側に上部通路を、吸、排気ポート下壁側に下部通路を
分けるように形成したため、ポートの下流側部分での淀
みがなくなって、冷却水を抵抗なく流すことができ、効
率良い冷却を行える。In the second invention, since the partition wall is formed so as to divide the upper passage on the upper wall side of the intake / exhaust port and the lower passage on the lower wall side of the intake / exhaust port, the stagnation in the downstream side portion of the port is prevented. It is no longer necessary and the cooling water can flow without resistance, and efficient cooling can be performed.
【００３２】第３の発明は、上部通路端と下部通路端と
を接続し、上部通路が下部通路の後流側になるように形
成したため、冷却水全量を下部通路に流すことができ、
より効率の良い冷却を行える。According to the third aspect of the invention, since the upper passage end and the lower passage end are connected and the upper passage is formed on the downstream side of the lower passage, the entire amount of cooling water can be made to flow to the lower passage.
More efficient cooling can be performed.
【図１】実施例の平面図である。FIG. 1 is a plan view of an embodiment.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】図１のＢ−Ｂ線断面図である。FIG. 3 is a sectional view taken along line BB of FIG.
【図４】図１のＣ−Ｃ線断面図である。4 is a cross-sectional view taken along the line CC of FIG.
【図５】他の実施例の断面図である。FIG. 5 is a cross-sectional view of another embodiment.
【図６】他の実施例の断面図である。FIG. 6 is a cross-sectional view of another embodiment.
【図７】従来例の断面図である。FIG. 7 is a sectional view of a conventional example.
【図８】従来例の断面図である。FIG. 8 is a sectional view of a conventional example.
【図９】従来例の断面図である。FIG. 9 is a sectional view of a conventional example.
２０ 燃焼室 ２１ 吸気ポート ２２ 排気ポート ２３ 挿着筒 ２４ 軸受部 ２５ ロアデッキ ２６ アッパデッキ ２７ 下部通路 ２８ 上部通路 ２９ 隔壁 ３０，３１ ポート下壁 ３２，３３ ポート上壁 ３４，３５ 入口部 ４０ 上部通路 ４１ 下部通路 ４２ 入口部 ４３ 出口部 ５０ 上部通路 ５１ 出口部 ５３ 遮断弁 20 Combustion Chamber 21 Intake Port 22 Exhaust Port 23 Insertion Tube 24 Bearing Part 25 Lower Deck 26 Upper Deck 27 Lower Passage 28 Upper Passage 29 Partition Wall 30, 31 Port Lower Wall 32, 33 Port Upper Wall 34, 35 Inlet 40 Upper Passage 41 Lower Passage 42 Inlet 43 Outlet 50 Upper passage 51 Outlet 53 Shutoff valve
Claims (3)
通路を、燃焼室側のロアデッキに沿う下部通路と動弁機
構側のアッパデッキに沿う上部通路とに隔成する隔壁を
設けたことを特徴とする内燃機関のシリンダヘッド。1. A partition wall is provided which separates a cooling water passage in the cylinder head for passing cooling water into a lower passage along the lower deck on the combustion chamber side and an upper passage along the upper deck on the valve mechanism side. Cylinder head of internal combustion engine.
前記上部通路をポート上壁側に、前記下部通路をポート
下壁側に分けるように形成したことを特徴とする請求項
１に記載の内燃機関のシリンダヘッド。2. The partition wall at intake and exhaust port portions,
2. The cylinder head for an internal combustion engine according to claim 1, wherein the upper passage is formed on the port upper wall side and the lower passage is formed on the port lower wall side.
し、上部通路が下部通路の後流側になるように形成した
ことを特徴とする請求項１に記載の内燃機関のシリンダ
ヘッド。3. The cylinder head for an internal combustion engine according to claim 1, wherein the upper passage end and the lower passage end are connected to each other, and the upper passage is formed on the downstream side of the lower passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12424493A JPH06330812A (en) | 1993-05-26 | 1993-05-26 | Cylinder head for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12424493A JPH06330812A (en) | 1993-05-26 | 1993-05-26 | Cylinder head for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06330812A true JPH06330812A (en) | 1994-11-29 |
Family
ID=14880537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12424493A Pending JPH06330812A (en) | 1993-05-26 | 1993-05-26 | Cylinder head for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06330812A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444469B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for intensifying cooling function engine coolant |
| DE102004040227A1 (en) * | 2004-08-18 | 2006-02-23 | Bayerische Motoren Werke Ag | Cylinder head for a water-cooled multi-cylinder internal combustion engine |
| CN102635459A (en) * | 2012-05-06 | 2012-08-15 | 中国兵器工业集团第七0研究所 | Novel water cavity of cylinder cover |
| CN103867332A (en) * | 2012-12-17 | 2014-06-18 | 安徽华菱汽车有限公司 | Water-cooled engine and cylinder cover thereof |
-
1993
- 1993-05-26 JP JP12424493A patent/JPH06330812A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444469B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for intensifying cooling function engine coolant |
| DE102004040227A1 (en) * | 2004-08-18 | 2006-02-23 | Bayerische Motoren Werke Ag | Cylinder head for a water-cooled multi-cylinder internal combustion engine |
| CN102635459A (en) * | 2012-05-06 | 2012-08-15 | 中国兵器工业集团第七0研究所 | Novel water cavity of cylinder cover |
| CN103867332A (en) * | 2012-12-17 | 2014-06-18 | 安徽华菱汽车有限公司 | Water-cooled engine and cylinder cover thereof |
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