JPH09242602A - Cylinder head - Google Patents

Cylinder head

Info

Publication number
JPH09242602A
JPH09242602A JP4600796A JP4600796A JPH09242602A JP H09242602 A JPH09242602 A JP H09242602A JP 4600796 A JP4600796 A JP 4600796A JP 4600796 A JP4600796 A JP 4600796A JP H09242602 A JPH09242602 A JP H09242602A
Authority
JP
Japan
Prior art keywords
cylinder head
exhaust port
water
cooling water
flow
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
Application number
JP4600796A
Other languages
Japanese (ja)
Inventor
Harumi Togashi
春美 冨樫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP4600796A priority Critical patent/JPH09242602A/en
Publication of JPH09242602A publication Critical patent/JPH09242602A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F1/26Cylinder heads having cooling means
    • F02F1/36Cylinder heads having cooling means for liquid cooling
    • F02F1/38Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F1/26Cylinder heads having cooling means
    • F02F1/36Cylinder heads having cooling means for liquid cooling
    • F02F1/40Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 

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

PROBLEM TO BE SOLVED: To provide a cylinder head having excellent cooling efficiency, by preventing occurrence of vortex of cooling water in a head water jacket. SOLUTION: In a cylinder head 1 in which an intake port 4 is arranged one side of the longitudinal side of the cylinder head 1 and an exhaust port 5 is arranged in the other side thereof, and which is equipped with a water passage for introducing cooling water to the circumference of the exhaust port 5, a straightening member 9 by which an exhaust port 5 side is divided into a passage 15 flowing in the longitudinal direction of the cylinder head 1 and a passage 16 flowing between the intake port 4 and the exhaust port 5, is arranged in the water passage.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、シリンダヘッドに
係り、水路部に冷却水を流して冷却を行うシリンダヘッ
ドに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder head, and more particularly to a cylinder head for cooling by flowing cooling water in a water channel.

【0002】[0002]

【従来の技術】シリンダヘッドは、シリンダブロックの
上に設けられ、シリンダブロック及びピストンヘッドと
によって、燃焼室が囲まれて形成されている。図5に示
すように、この燃焼室の真上部分に吸気ポート燃焼室側
開口端2と排気ポート燃焼室側開口端3とが形成されて
いる。吸気ポート燃焼室側開口端2から吸気ポート4が
シリンダヘッド1長手方向と交差する方向に延びて、シ
リンダヘッド1の長手側の一方a側の側壁10に開口す
るように形成されている。また、排気ポート燃焼室側開
口端3から排気ポート5がシリンダヘッド1長手方向と
交差する方向で吸気ポート4と反対の方向に延びて、シ
リンダヘッド1の長手側の他方b側の側壁11に開口す
るように形成されている。上記燃焼室で繰り返し燃焼が
行われるため、この上部や燃焼した排気の通路である排
気ポート5等は高温になってしまう。従って、シリンダ
ヘッド1内には、燃焼室上部や排気ポート5を冷却すべ
く、冷却水の流れる水路部空間である水ジャケット6が
形成されており、シリンダヘッド1の下壁12には、上
記水ジャケット6へ冷却水が流入するための水穴7が複
数設けられている。シリンダヘッド1の長手方向端部に
冷却水を排出する流出口(図示せず)が形成されてお
り、そこには自動的に冷却水の温度を調整するサーモス
タットが設けられている。また、水ポンプにより、冷却
水がシリンダブロックの水ジャケットを通過して水穴7
に供給されるように構成されている。
2. Description of the Related Art A cylinder head is provided on a cylinder block, and a combustion chamber is surrounded by the cylinder block and a piston head. As shown in FIG. 5, an intake port combustion chamber side opening end 2 and an exhaust port combustion chamber side opening end 3 are formed immediately above this combustion chamber. An intake port 4 is formed so as to extend in a direction intersecting the longitudinal direction of the cylinder head 1 from an opening end 2 of the intake port on the combustion chamber side, and open to a side wall 10 on one longitudinal side a of the cylinder head 1. Further, the exhaust port 5 extends from the opening end 3 on the exhaust port combustion chamber side in the direction opposite to the intake port 4 in a direction intersecting the longitudinal direction of the cylinder head 1 and extends to the side wall 11 on the other side b on the longitudinal side of the cylinder head 1. It is formed so as to open. Since the combustion is repeatedly performed in the combustion chamber, the temperature of the upper part, the exhaust port 5 which is the passage of the burned exhaust gas, etc. becomes high. Therefore, in the cylinder head 1, a water jacket 6 which is a water passage space for cooling water is formed in order to cool the upper portion of the combustion chamber and the exhaust port 5, and the lower wall 12 of the cylinder head 1 is provided with the above-mentioned water jacket 6. A plurality of water holes 7 for allowing cooling water to flow into the water jacket 6 are provided. An outlet (not shown) for discharging the cooling water is formed at the longitudinal end of the cylinder head 1, and a thermostat for automatically adjusting the temperature of the cooling water is provided therein. In addition, the water pump allows the cooling water to pass through the water jacket of the cylinder block and the water hole 7
Is configured to be supplied.

【0003】冷却水はそれぞれの水穴7から流入し、水
ジャケット6内を流出口側へ向かって各部を冷却しなが
ら流れ、流出口のサーモスタットによりその水温を検知
し、自動的に流れる冷却水の量を調整するように構成さ
れている。
Cooling water flows in through the respective water holes 7, flows through the water jacket 6 toward the outlet while cooling each part, and the temperature of the cooling water is detected by a thermostat at the outlet, and the cooling water automatically flows. Is configured to adjust the amount of.

【0004】[0004]

【発明が解決しようとする課題】ここで、冷却水が水穴
7から流入し、流出口へ向かって流れるが、シリンダヘ
ッド1内の長手方向に吸気ポート4と排気ポート5とが
交互に形成されているため、冷却水はシリンダヘッド中
央部を長手方向に吸気ポート4と排気ポート5との区画
壁13に沿って流れたり、吸気ポート4や排気ポート5
の上下の空間を流れることとなる。ところで、この流れ
の中で吸気ポート4と排気ポート5との間の流路は狭
く、隣接する排気ポート5同士の間の流路は広くなって
いる。これら排気ポート5間部分では、流路の容積が小
さい部分から急に大きくなるので、流速が急に低下して
流れが止まり滞流が起こり、図中矢印に示すように、渦
14が発生してしまう。そのため、冷却水の循環が悪く
なるので、シリンダヘッド中央部の吸排気ポート間を冷
却する流れが少なくなり、冷却水が熱くなって、冷却効
率が悪化して、バルブ,燃料噴射ノズル,バルブシート
等のシリンダヘッド1の中央部に設けられている部品の
温度が上昇してしまう。
Here, the cooling water flows in from the water hole 7 and flows toward the outlet, but the intake port 4 and the exhaust port 5 are alternately formed in the longitudinal direction in the cylinder head 1. Therefore, the cooling water flows in the central portion of the cylinder head in the longitudinal direction along the partition wall 13 between the intake port 4 and the exhaust port 5, or the intake port 4 and the exhaust port 5 are cooled.
It will flow in the space above and below. By the way, in this flow, the flow path between the intake port 4 and the exhaust port 5 is narrow, and the flow path between the adjacent exhaust ports 5 is wide. In the area between the exhaust ports 5, the volume of the flow path suddenly increases from the small volume, the flow velocity suddenly decreases, the flow stops, and stagnant flow occurs, and a vortex 14 is generated as shown by the arrow in the figure. Will end up. Therefore, the circulation of the cooling water becomes poor, so that the flow for cooling between the intake and exhaust ports at the center of the cylinder head becomes small, the cooling water becomes hot and the cooling efficiency deteriorates, and the valve, fuel injection nozzle, valve seat As a result, the temperature of components such as those provided in the central portion of the cylinder head 1 rises.

【0005】そこで、本発明の目的は、上記従来の問題
点を解決するために、渦14の発生を防止して冷却水を
効率的に流し、冷却効率のよいシリンダヘッドを提供す
ることである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cylinder head which prevents the generation of the vortex 14 and allows the cooling water to flow efficiently, and has a high cooling efficiency, in order to solve the above conventional problems. .

【0006】なお、特開平6−221150号公報に、
遮断壁をシリンダヘッド内の冷却水の流路に設け、冷却
水の流れを調整したものが提案されているが、この発明
は単に、シリンダヘッド内の両端側の流れを中央部に流
すようにしたものであり、流路内での渦に対しての考慮
は何もなされていない。
Incidentally, Japanese Patent Laid-Open No. 6-221150 discloses that
Although it has been proposed that a blocking wall is provided in the cooling water flow path in the cylinder head to adjust the flow of the cooling water, the present invention is designed so that the flow on both end sides in the cylinder head is simply passed to the central portion. However, no consideration is given to the vortex in the flow path.

【0007】[0007]

【課題を解決するための手段】前記課題を解決すべく本
発明は、シリンダヘッド長手側の一方に吸気ポートを、
他方に排気ポートを配設し、該排気ポートの周囲に冷却
水を導く水路部を有したシリンダヘッドにおいて、上記
水路部に、上記排気ポート側をシリンダヘッド長手方向
に流れる流路と、吸排気ポート間を流れる流路とに分け
る整流部材を設けたものである。
In order to solve the above-mentioned problems, the present invention provides an intake port on one of the longitudinal sides of the cylinder head.
In a cylinder head having an exhaust port disposed on the other side and having a water channel portion for guiding cooling water around the exhaust port, in the water channel portion, a flow channel that flows in the cylinder head longitudinal direction on the exhaust port side, and intake and exhaust A rectifying member that divides the flow path between the ports is provided.

【0008】そして、上記整流部材が、隣接する排気ポ
ート間に配置されたものである。
The flow regulating member is arranged between the adjacent exhaust ports.

【0009】上記構成により、排気ポート側をシリンダ
ヘッド長手方向に流れる流路と、吸排気ポート間を流れ
る流路とに分けられるため、渦が発生せず、また、シリ
ンダヘッド中央部を吸気ポートと排気ポートの区画壁に
沿った流れが効率的に行われ、多くの冷却水が流れるの
で、冷却効率を向上させることができる。
With the above structure, the exhaust port side is divided into a flow channel that flows in the longitudinal direction of the cylinder head and a flow channel that flows between the intake and exhaust ports, so that no vortex is generated and the central portion of the cylinder head is located at the intake port. Since the flow along the partition wall of the exhaust port is efficiently performed and a large amount of cooling water flows, the cooling efficiency can be improved.

【0010】[0010]

【発明の実施の形態】以下、本発明の実施の形態を添付
図面に従って説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

【0011】図1に示すように、シリンダヘッド1は長
手方向に沿ってその中央部に吸気ポート燃焼室側開口端
2と排気ポート燃焼室側開口端3とが交互に、所定の間
隔をおいて形成されている。そして、この吸気ポート燃
焼室側開口端2からシリンダヘッド1長手側の一方a側
に吸気ポート4が形成され、また、排気ポート燃焼室側
開口端3から吸気ポート4とは他方b側に排気ポート5
が形成されている。これら吸気ポート4及び排気ポート
5の周囲に水ジャケット6が形成されており、この水ジ
ャケット6には冷却水を流入させるための水穴7が複数
形成されている。シリンダヘッド1の端部には、流出口
8が形成されており、冷却水は水ジャケット6内を流出
口8に向かって流れていくように構成されている。
As shown in FIG. 1, the cylinder head 1 has an intake port combustion chamber side opening end 2 and an exhaust port combustion chamber side opening end 3 alternately arranged at a predetermined interval in the central portion along the longitudinal direction. Is formed. An intake port 4 is formed from the intake port-combustion chamber-side opening end 2 to one side a of the cylinder head 1 longitudinal side, and an exhaust port 4 is formed from the exhaust port combustion-chamber-side opening end 3 to the other side b. Port 5
Are formed. A water jacket 6 is formed around the intake port 4 and the exhaust port 5, and a plurality of water holes 7 for allowing cooling water to flow in are formed in the water jacket 6. An outlet 8 is formed at the end of the cylinder head 1, and the cooling water is configured to flow in the water jacket 6 toward the outlet 8.

【0012】シリンダヘッドは鋳鉄やアルミ等の耐熱性
及び強度を有するものであり、シリンダブロック(図示
せず)の上に設けられ、シリンダブロック及びピストン
ヘッド(図示せず)とによって、燃焼室(図示せず)が
囲まれて形成されている。吸気ポート燃焼室側開口端2
と排気ポート燃焼室側開口端3とは、上記燃焼室の上部
に一つずつ形成され、それぞれにバルブ(図示せず)が
設けられている。吸気ポート4は吸気ポート燃焼室側開
口端2から上方に所定の寸法形成され、そこからシリン
ダヘッド1長手側の一方a側に向かって屈曲して、シリ
ンダヘッドの側壁10に開口されるように形成されてい
る。排気ポート5は排気ポート燃焼室側開口端3から上
方に所定の寸法形成され、そこからシリンダヘッド1長
手側の他方b側に向かって屈曲して、シリンダヘッドの
側壁11に開口されるように形成されている。
The cylinder head is made of cast iron, aluminum or the like having heat resistance and strength, is provided on a cylinder block (not shown), and is connected to the combustion chamber (by a cylinder block and a piston head (not shown)). (Not shown) is surrounded and formed. Intake port Combustion chamber side open end 2
The exhaust port combustion chamber side opening end 3 and the exhaust port combustion chamber side opening end 3 are formed one by one in the upper part of the combustion chamber, and a valve (not shown) is provided in each. The intake port 4 is formed to have a predetermined size upward from the opening end 2 on the combustion chamber side of the intake port, bends from there to one side a on the longitudinal side of the cylinder head 1, and is opened to the side wall 10 of the cylinder head. Has been formed. The exhaust port 5 is formed to have a predetermined size upward from the exhaust port combustion chamber side opening end 3, bends from there to the other side b on the longitudinal side of the cylinder head 1, and is opened to the side wall 11 of the cylinder head. Has been formed.

【0013】そして、シリンダヘッド1内全体、主に、
中央部の燃焼室上部や排気ポート5の周囲の部分に、冷
却水を接触させるための水路部空間である水ジャケット
6が形成されている。
Then, the entire cylinder head 1, mainly
A water jacket 6 which is a water channel space for contacting cooling water is formed in the upper part of the combustion chamber in the central portion and in the peripheral portion of the exhaust port 5.

【0014】特に、本発明にあっては、隣接する排気ポ
ート5同士の間の水ジャケット6部分に、整流部材9を
設け、水路部を排気ポート5側の側壁11側をシリンダ
ヘッド1長手方向に流れる流路15と、シリンダヘッド
1の中央部の吸排気ポート4,5間を流れる流路16と
に分けたことに特長を有するものである。
In particular, in the present invention, the water rectifying member 9 is provided in the water jacket 6 portion between the adjacent exhaust ports 5, and the water passage portion is located on the side of the exhaust port 5 and on the side wall 11 side of the cylinder head 1 in the longitudinal direction. It is characterized in that it is divided into a flow passage 15 that flows between the intake and exhaust ports 4 and 5 at the center of the cylinder head 1.

【0015】整流部材9は冷却水の流れを変えることが
できる程度の強度及び耐熱性を有したもので、吸排気ポ
ート4,5と同様の厚さで平板状に形成されて、隣接す
る排気ポート5の向き合った区画壁17を掛け渡すよう
に設けられている。流出口8の方向、すなわち、冷却水
が流れていく方向に向かって、その上流側では側壁10
から少しの間隔を空けた部分の、区画壁17に設けられ
たシリンダヘッド1固定用ボルトのボス部分20に、整
流部材9が固着され、そこから下流側に行くにつれて中
央部に近付くように長手方向と約30°の角度で形成さ
れ、下流側の区画壁17に設けられたシリンダヘッド1
固定用ボルトのボス部分21に固着されている。その縦
方向断面は図2に示すようにヘッド水ジャケット6の底
面から上端面まで延出されて形成されている。
The rectifying member 9 has such strength and heat resistance that it can change the flow of the cooling water, and is formed in a flat plate shape with the same thickness as the intake and exhaust ports 4 and 5, so that the adjacent exhaust gas is exhausted. It is provided so as to bridge the partition wall 17 facing the port 5. In the direction of the outlet 8, that is, in the direction in which the cooling water flows, the side wall 10 is provided on the upstream side.
The rectifying member 9 is fixed to the boss portion 20 of the cylinder head 1 fixing bolt provided on the partition wall 17 at a portion spaced apart from the rectifying member 9. Direction, the cylinder head 1 is formed at an angle of about 30 ° and is provided on the partition wall 17 on the downstream side.
It is fixed to the boss portion 21 of the fixing bolt. As shown in FIG. 2, the vertical cross section extends from the bottom surface of the head water jacket 6 to the upper end surface thereof.

【0016】これにより、冷却水が排気ポート5側の側
壁11側をシリンダヘッド長手方向に流れる流路15
と、シリンダヘッド1の中央部で吸排気ポートの区画壁
13に沿って流れる流路16とに分けられることとな
る。
As a result, the cooling water flows in the longitudinal direction of the cylinder head on the side wall 11 side of the exhaust port 5 side.
And the flow path 16 flowing along the partition wall 13 of the intake / exhaust port at the center of the cylinder head 1.

【0017】また、水ジャケット6の下面となるシリン
ダヘッド1の下壁12には所定の間隔で、所定の形状の
水穴7が形成されている。この水穴7は、シリンダブロ
ックの水ジャケット(図示せず)を介して水ポンプと連
通され、冷却水がシリンダブロックの水ジャケットを通
過して水穴7に供給されるように構成されている。一
方、流出口8は、冷却水を冷却すべくラジエータと連通
しており、流出口8から流出した冷却水はラジエータで
冷却され、水ポンプを循環して再度シリンダヘッド1へ
流入するように構成されている。
Further, water holes 7 having a predetermined shape are formed at predetermined intervals on a lower wall 12 of the cylinder head 1 which is a lower surface of the water jacket 6. The water hole 7 is communicated with a water pump via a water jacket (not shown) of the cylinder block, and cooling water is supplied to the water hole 7 through the water jacket of the cylinder block. . On the other hand, the outlet 8 communicates with a radiator to cool the cooling water, and the cooling water flowing out from the outlet 8 is cooled by the radiator, circulates through a water pump, and flows into the cylinder head 1 again. Has been done.

【0018】以上の構成から本発明の実施の形態の作用
を説明する。
The operation of the embodiment of the present invention will be described based on the above configuration.

【0019】冷却水は水ポンプによりシリンダブロック
の水ジャケットを介して、水ジャケット6下面に設けら
れた水穴7から流入する。そして、流出口8に向かって
流れていく。この際、流路は主に排気ポート5側の側壁
11側をシリンダヘッド1長手方向に流れる流路15
と、シリンダヘッド1中央部の吸排気ポート4,5間を
各区画壁13に沿って流れる流路16と、吸気ポート4
側の側壁10側を流れる流路18とに分けられる。特
に、シリンダヘッド1の中央部の冷却水は、吸気ポート
燃焼室側開口端2と排気ポート燃焼室側開口端3とから
上方に立ち上げられた部分の吸排気ポート4,5の間を
区画壁13に沿って流れていく。この流路16では、隣
接する排気ポート5同士間に吸排気ポート4,5の間か
ら冷却水が流れ込むが、流出口8への流れの方向である
吸排気ポート間に向かって整流部材が形成され、渦を発
生させる流れの方向を塞いでいるので、図1中黒矢印で
示すように、排気ポート5同士間へ流れ込んだ冷却水は
整流部材9により、その流れが流出口8側へ統一され、
また、流路の断面積が大きく変わることがなく、冷却水
が一定の方向に速い流速で流れるようになる。
Cooling water flows in from a water hole provided in the lower surface of the water jacket 6 through a water jacket of the cylinder block by a water pump. Then, it flows toward the outlet 8. At this time, the flow path 15 mainly flows in the longitudinal direction of the cylinder head 1 on the side wall 11 side of the exhaust port 5 side.
And a flow path 16 flowing between the intake and exhaust ports 4 and 5 at the center of the cylinder head 1 along each partition wall 13, and the intake port 4
And the flow path 18 flowing on the side wall 10 side. In particular, the cooling water in the central portion of the cylinder head 1 partitions between the intake / exhaust ports 4 and 5 of the portion raised upward from the intake port combustion chamber side opening end 2 and the exhaust port combustion chamber side opening end 3. It flows along the wall 13. In the flow path 16, cooling water flows between the adjacent exhaust ports 5 from between the intake and exhaust ports 4 and 5, but a rectifying member is formed between the intake and exhaust ports, which is the direction of flow to the outlet 8. Since the flow direction that causes the vortex is blocked, the cooling water flowing between the exhaust ports 5 is unified by the rectifying member 9 to the outlet 8 side as shown by the black arrow in FIG. Is
In addition, the cross-sectional area of the flow channel does not change significantly, and the cooling water flows in a fixed direction at a high flow rate.

【0020】また、排気ポート5側の側壁11側をシリ
ンダヘッド長手方向に流れる流路15では、図1中白矢
印で示すように、冷却水は流出口8側へ向かって、側壁
11に沿ってストレートに流れるため、渦が起きること
はない。
In the flow path 15 flowing in the longitudinal direction of the cylinder head on the side of the exhaust port 5 on the side of the side wall 11, the cooling water flows along the side wall 11 toward the outlet 8 as shown by the white arrow in FIG. Since it flows straight and straight, there is no vortex.

【0021】また、吸気ポート4側の側壁10側をシリ
ンダヘッド長手方向に流れる流路18では、もともと流
路は狭く断面積の大きな変化はないので、冷却水の流れ
が乱れず、渦が発生することはない。なお、この吸気ポ
ート4間にも整流部材を形成するようにしてもよい。
Further, in the flow passage 18 which flows in the longitudinal direction of the cylinder head on the side wall 10 side of the intake port 4, since the flow passage is originally narrow and the cross-sectional area does not change greatly, the flow of cooling water is not disturbed and vortices are generated. There is nothing to do. A rectifying member may also be formed between the intake ports 4.

【0022】以上の作用により、水ジャケット6内の冷
却水の渦の発生を防止することができ、多くの冷却水を
流すことができ、常時、冷却された冷却水をシリンダヘ
ッド1の各部、特に、燃焼室上部の吸排気ポート4,5
間や排気ポート5の外周部の高温部分を流すことがで
き、バルブ,燃料噴射ノズル,バルブシート等のシリン
ダヘッド1の中央部に設けられている部品の温度の上昇
を防止できる。
With the above operation, the generation of the swirl of the cooling water in the water jacket 6 can be prevented, a large amount of cooling water can be made to flow, and the cooled cooling water can be constantly supplied to each part of the cylinder head 1. Especially, the intake and exhaust ports 4, 5 on the upper part of the combustion chamber
It is possible to flow a high temperature portion in the space or in the outer peripheral portion of the exhaust port 5, and it is possible to prevent an increase in temperature of parts provided in the central portion of the cylinder head 1 such as the valve, the fuel injection nozzle, and the valve seat.

【0023】図3,図4は他の実施の形態を示したもの
である。整流部材9の縦方向断面は容易に一体成型する
ことができるように、図3に示すように、シリンダヘッ
ド1の下壁10から上方へ水ジャケット6の高さのほぼ
中間部まで延出させるように形成したり、図4に示すよ
うに、シリンダヘッド1の上壁19から下方へ水ジャケ
ット6の高さのほぼ中間部まで延出させるように形成し
てもよい。また、その端部は断面半円状でなく、直角や
鋭角に形成してもよい。
3 and 4 show another embodiment. As shown in FIG. 3, the rectifying member 9 extends upward from the lower wall 10 of the cylinder head 1 to approximately the middle of the height of the water jacket 6 so that the rectifying member 9 can be easily integrally molded. Alternatively, as shown in FIG. 4, it may be formed so as to extend downward from the upper wall 19 of the cylinder head 1 to a substantially middle portion of the height of the water jacket 6. Further, the end portion may be formed in a right angle or an acute angle instead of the semicircular cross section.

【0024】また、本実施の形態では、整流部材9は平
板状に形成しているが、冷却水の流れを整えることがで
きる形状であれば、表面に溝を形成したり、波状に形成
したりしてもよい。また、整流部材9を設ける角度は3
0°に限らず、流れを乱さない範囲の角度であればよ
い。
Further, in the present embodiment, the rectifying member 9 is formed in a flat plate shape, but if it has a shape that can regulate the flow of cooling water, it may be formed in a groove or a wavy shape on the surface. You may. The angle at which the rectifying member 9 is provided is 3
The angle is not limited to 0 ° and may be any angle within a range that does not disturb the flow.

【0025】なお、本実施の形態ではシリンダヘッドは
2バルブヘッドであるが、4バルブヘッドに適用するこ
ともできる。
Although the cylinder head is a two-valve head in this embodiment, it can be applied to a four-valve head.

【0026】[0026]

【発明の効果】以上要するに本発明によれば、水ジャケ
ット内において渦の発生を防止して、流速を上げること
ができ、シリンダヘッド中央部の燃焼室上部や排気ポー
トの高温部分に多くの冷却水を流すことができるので、
冷却効率を向上させ、バルブ,燃料噴射ノズル,バルブ
シート等のシリンダヘッドの中央部に設けられている部
品の温度の上昇を防止でき、シリンダヘッドの耐久性を
向上させることができるという優れた効果を発揮する。
In summary, according to the present invention, it is possible to prevent the generation of vortices in the water jacket and increase the flow velocity, and to cool much in the upper portion of the combustion chamber at the center of the cylinder head and the high temperature portion of the exhaust port. Because water can be drained,
An excellent effect that the cooling efficiency is improved, the temperature rise of the parts provided in the central portion of the cylinder head such as the valve, the fuel injection nozzle, and the valve seat can be prevented, and the durability of the cylinder head can be improved. Exert.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明を適用したシリンダヘッドの実施の形態
を示す水平方向断面図である。
FIG. 1 is a horizontal sectional view showing an embodiment of a cylinder head to which the present invention is applied.

【図2】図1のA−A部の整流部材の形状を示す縦方向
断面図である。
FIG. 2 is a vertical cross-sectional view showing the shape of a rectifying member of AA section in FIG.

【図3】他の整流部材の形状を示す縦方向断面図であ
る。
FIG. 3 is a vertical cross-sectional view showing the shape of another flow regulating member.

【図4】他の整流部材の形状を示す縦方向断面図であ
る。
FIG. 4 is a vertical cross-sectional view showing the shape of another flow regulating member.

【図5】従来のシリンダヘッドを示す水平方向断面図で
ある。
FIG. 5 is a horizontal sectional view showing a conventional cylinder head.

【図6】図5のB−B断面図である。FIG. 6 is a sectional view taken along line BB of FIG. 5;

【符号の説明】[Explanation of symbols]

1 シリンダヘッド 4 吸気ポート 5 排気ポート 6 水ジャケット(水路部) 9 整流部材 15,16 流路 1 Cylinder Head 4 Intake Port 5 Exhaust Port 6 Water Jacket (Water Channel) 9 Rectifying Member 15, 16 Flow Path

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 シリンダヘッド長手側の一方に吸気ポー
トを、他方に排気ポートを配設し、該排気ポートの周囲
に冷却水を導く水路部を有したシリンダヘッドにおい
て、上記水路部に、上記排気ポート側をシリンダヘッド
長手方向に流れる流路と、吸排気ポート間を流れる流路
とに分ける整流部材を設けたことを特徴とするシリンダ
ヘッド。
1. A cylinder head having an intake port on one longitudinal side of a cylinder head and an exhaust port on the other side, and having a water channel portion for guiding cooling water around the exhaust port, wherein the water channel portion is provided with A cylinder head provided with a rectifying member that divides an exhaust port side into a flow channel that flows in the cylinder head longitudinal direction and a flow channel that flows between intake and exhaust ports.
【請求項2】 上記整流部材が、隣接する排気ポート間
に配置されたものである請求項1記載のシリンダヘッ
ド。
2. The cylinder head according to claim 1, wherein the rectifying member is arranged between adjacent exhaust ports.
JP4600796A 1996-03-04 1996-03-04 Cylinder head Pending JPH09242602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4600796A JPH09242602A (en) 1996-03-04 1996-03-04 Cylinder head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4600796A JPH09242602A (en) 1996-03-04 1996-03-04 Cylinder head

Publications (1)

Publication Number Publication Date
JPH09242602A true JPH09242602A (en) 1997-09-16

Family

ID=12735020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4600796A Pending JPH09242602A (en) 1996-03-04 1996-03-04 Cylinder head

Country Status (1)

Country Link
JP (1) JPH09242602A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239135A2 (en) 2001-03-06 2002-09-11 Toyota Jidosha Kabushiki Kaisha Cooling structure of cylinder head and method for manufacturing cylinder head
JP2005535819A (en) * 2002-06-21 2005-11-24 エフエーファオ モトレンテクニーク ゲゼルシャフト ミット ベシュレンクテル ハフツング Cooling cylinder head for piston engine
JP2008075504A (en) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd Water-cooled engine
JP2008075506A (en) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd Water-cooled multi-cylinder engine
JP2015113706A (en) * 2013-12-09 2015-06-22 マツダ株式会社 Cooling structure of engine
JP2016079814A (en) * 2014-10-10 2016-05-16 株式会社クボタ Engine cylinder head cooling device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239135A2 (en) 2001-03-06 2002-09-11 Toyota Jidosha Kabushiki Kaisha Cooling structure of cylinder head and method for manufacturing cylinder head
JP2005535819A (en) * 2002-06-21 2005-11-24 エフエーファオ モトレンテクニーク ゲゼルシャフト ミット ベシュレンクテル ハフツング Cooling cylinder head for piston engine
JP2008075504A (en) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd Water-cooled engine
JP2008075506A (en) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd Water-cooled multi-cylinder engine
JP2015113706A (en) * 2013-12-09 2015-06-22 マツダ株式会社 Cooling structure of engine
JP2016079814A (en) * 2014-10-10 2016-05-16 株式会社クボタ Engine cylinder head cooling device

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