JPS6220655A - Cooling apparatus for cylinderhead in multicylinder internal-combustion engine - Google Patents
Cooling apparatus for cylinderhead in multicylinder internal-combustion engineInfo
- Publication number
- JPS6220655A JPS6220655A JP15779385A JP15779385A JPS6220655A JP S6220655 A JPS6220655 A JP S6220655A JP 15779385 A JP15779385 A JP 15779385A JP 15779385 A JP15779385 A JP 15779385A JP S6220655 A JPS6220655 A JP S6220655A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water jacket
- cooling
- cooling water
- combustion chambers
- 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.)
- Granted
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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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
- 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
【発明の詳細な説明】
Ａ０発明の目的
（１１産業上の利用分野
本発明は多気筒内燃機関の機関本体の一部を構成するシ
リンダヘッドの冷却装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION A0 OBJECTS OF THE INVENTION (11) INDUSTRIAL APPLICATION FIELD The present invention relates to a cooling device for a cylinder head forming a part of the engine body of a multi-cylinder internal combustion engine.
（２）従来の技術
水冷式多気筒内燃機関のシリンダヘッドにおいて、複数
の燃焼室の上方にウォータジャケットを形成したものは
、たとえば特開昭６０−７９１４１号公報に開示される
ように既に公知である。(2) Prior Art A cylinder head for a water-cooled multi-cylinder internal combustion engine in which a water jacket is formed above a plurality of combustion chambers is already known, for example, as disclosed in JP-A-60-79141. be.
（３）発明が解決しようとする問題点
ところで近年かかる多気筒内燃機関、特に自動車用のも
のでは、その小型化、軽量化の要請が強く、そのため隣
接するシリンダ間の間隔は、サイテ
アミ 見られるように可及的に狭くしたものが出現
している。しかしながらこのようにすれば、各シリンダ
上の、燃焼室間の間隔も狭くなシ、したがって該燃焼室
口りの高温加熱部の冷却が一層厳しくなるという問題が
ある。(3) Problems to be solved by the invention In recent years, there has been a strong demand for multi-cylinder internal combustion engines, especially those for automobiles, to be smaller and lighter, so the spacing between adjacent cylinders has been reduced. A new version is emerging that is as narrow as possible. However, if this is done, there is a problem that the distance between the combustion chambers on each cylinder is also narrow, and therefore the cooling of the high temperature heating portion at the mouth of the combustion chamber becomes even more difficult.
本発明は上記実情にかんがみてなされたもので、多気筒
内燃機関のシリンダヘッド、特にその燃焼室口シの水冷
却性を著しく高めるようにした、構成簡単な多気筒内燃
機関のシリンダヘッドの冷却装置を提供することを目的
とするものである。The present invention has been made in view of the above-mentioned circumstances, and has a simple structure for cooling the cylinder head of a multi-cylinder internal combustion engine, which significantly improves the water cooling performance of the cylinder head of the multi-cylinder internal combustion engine, especially the mouth of the combustion chamber. The purpose is to provide a device.
Ｂ０発明の構成
（１）問題点を解決するための手段
本発明によれば、前記目的達成のため底壁に複数の燃焼
室が配列されるとともにそれらの燃焼室上にウォータジ
ャケットを形成してなる多気筒内燃機関のシリンダヘッ
ドにおいて、隣接する燃焼室間の、シリンダヘッドの底
壁に、前記複数の燃焼室の配列方向と略直交し、かつウ
ォータジャケットの中央部に向い上り勾配に傾斜して該
ウォータジャケットに連通ずる冷却水流入口を穿設し。B0 Structure of the Invention (1) Means for Solving Problems According to the present invention, in order to achieve the above object, a plurality of combustion chambers are arranged on the bottom wall and a water jacket is formed on the combustion chambers. In the cylinder head of a multi-cylinder internal combustion engine, the bottom wall of the cylinder head between adjacent combustion chambers is substantially orthogonal to the arrangement direction of the plurality of combustion chambers, and is inclined upward toward the center of the water jacket. and drill a cooling water inlet that communicates with the water jacket.
さらに前記ウォータジャケットの内壁には、前記冷却水
流入口よシ該ジャケット内に流入した冷却水を前記燃焼
室に向けて誘導するための傾斜案内壁を一体に形成する
。Furthermore, an inclined guide wall is integrally formed on the inner wall of the water jacket to guide the cooling water that has flowed into the jacket from the cooling water inlet toward the combustion chamber.
（２）作 用
前記構成によれば、シリンダヘッドのウォータジャケッ
ト内に導入された冷却水は傾斜案内壁によって燃焼室上
へ積極的に導かれ、該燃焼室、点火プラグ等の高温加熱
部を有効に冷却する。(2) Effect According to the above configuration, the cooling water introduced into the water jacket of the cylinder head is actively guided onto the combustion chamber by the inclined guide wall, and the high temperature heating parts such as the combustion chamber and the spark plug are heated. Cool effectively.
（３］実施例 以下、図面により本発明の実施例について説明する。(3) Example Embodiments of the present invention will be described below with reference to the drawings.
４弁式４気筒内燃機関の機関本体の頭部を構成するシリ
ンダヘッド１は、第２図に示すようにシリンダブロック
２上にガスケットを介して重合結着され、該シリンダヘ
ッド１の底壁には、複数の燃焼室３が配列され、それら
の開口下面は、シリンダブロック２のシリンダ４に開口
する。As shown in FIG. 2, a cylinder head 1 constituting the head of the engine body of a four-valve, four-cylinder internal combustion engine is superimposed and bonded onto a cylinder block 2 via a gasket. In this case, a plurality of combustion chambers 3 are arranged, and the open lower surfaces of the combustion chambers 3 open into the cylinders 4 of the cylinder block 2.
各燃焼室３の土壁には、吸気弁５によって開閉される一
対の吸気弁口６と、排気弁γによって開閉される一対の
排気弁口８とが対設され、一対の吸気弁口６は、シリン
ダヘッド１に形成した二叉状の吸気ボート９に連通され
、また一対の排気弁口８はシリンダヘッド１に形成した
二叉状の排気ポート１０に連通される。A pair of intake valve ports 6 that are opened and closed by an intake valve 5 and a pair of exhaust valve ports 8 that are opened and closed by an exhaust valve γ are provided oppositely in the earthen wall of each combustion chamber 3. are communicated with a forked intake boat 9 formed in the cylinder head 1, and a pair of exhaust valve ports 8 are communicated with a forked exhaust port 10 formed in the cylinder head 1.
各燃焼室３の中央部には、ねじ孔１１が穿設され、この
ねじ孔１１に点火プラグ１２が螺着され、この点火プラ
グ１２の下半部は、燃焼室３の上壁よシ上万に延設され
る中空円筒状プラグ収容筒１３内に収容される。A screw hole 11 is bored in the center of each combustion chamber 3, and an ignition plug 12 is screwed into the screw hole 11. The plug is housed in a hollow cylindrical plug housing tube 13 that extends over 1,000 mm.
第６図に明瞭に示すように、シリンダヘッド１には、複
数の燃焼室３の配列方向に沿ってウォータジャケット１
４が形成され、このウォータジャケット１４内に、複数
の燃焼室３の土壁、吸、排気ポート９ 、１０の外壁お
よび複数のプラグ収容筒１３の外壁が直接臨んでいる。As clearly shown in FIG. 6, a water jacket 1 is provided in the cylinder head 1 along the arrangement direction of the plurality of combustion chambers 3.
4 is formed, and the earth walls of the plurality of combustion chambers 3, the outer walls of the intake and exhaust ports 9 and 10, and the outer walls of the plurality of plug housing cylinders 13 directly face the water jacket 14.
第３〜５図に示すように相隣れる燃焼室３間において、
シリンダヘッド１の底壁１１には一対の冷却水流入口１
５が穿設されている。これらの流入口１５は第３図に示
すように複数の燃焼室３の配列方向と直交しウォータジ
ャケット１４の中央部に向って上り勾配に傾斜されて前
記ウォータジャケット１４に連通され、シリンダブロッ
ク２側の冷却水は前記一対の流入口１５を通ってウォー
タジャケット１４内に流入するよ５になっている。As shown in Figs. 3 to 5, between adjacent combustion chambers 3,
A pair of cooling water inlets 1 are provided in the bottom wall 11 of the cylinder head 1.
5 is drilled. As shown in FIG. 3, these inlets 15 are perpendicular to the arrangement direction of the plurality of combustion chambers 3 and are inclined upward toward the center of the water jacket 14 to communicate with the water jacket 14. The side cooling water flows into the water jacket 14 through the pair of inlets 15.
前記ウォータジャケット１４の底面には、前記一対の冷
却水流入口１５に沿う誘導溝１８が形成されるとともに
前記一対の流入口１５間には、それらの流入口１５と略
直交して鉛直方向にのびる衝壁°１６が一体に立設され
、さらに冷却水流入口１５の両側には平面よりみて隣接
する燃焼室３に向って傾斜する一対の傾斜案内壁１Ｔが
ウォータジャケット１４の内壁より一体に延設されてい
る。そして前記一対の傾斜案内壁１７は衝壁１６に接続
しておシ、それらは平面よシみて上面を開放した三角形
状の凹部を形成しており、この凹部の一対の傾斜案内壁
１３と衝壁１６との接続隅部はそれぞれ燃焼室３上に臨
んでいる。したがってシリンダブロック２側から冷却水
流入口１５を通ってシリンダヘッド１のウォータジャケ
ット１４内に流入した冷却水は、第３，４図矢印に示す
ように前記一対の傾斜案内壁１７に案内されて、隣接す
る燃焼室３へ向って分流し、燃焼室３および点火プラグ
１２等の高温加熱部を冷却することができる。A guide groove 18 is formed on the bottom surface of the water jacket 14 along the pair of cooling water inlets 15, and a guide groove 18 is formed between the pair of inlets 15 and extends in a vertical direction substantially perpendicular to the inlets 15. A barrier wall 16 is integrally provided, and a pair of inclined guide walls 1T, which are inclined toward the adjacent combustion chamber 3 when viewed from the plane, are provided on both sides of the cooling water inlet 15 and extend integrally from the inner wall of the water jacket 14. has been done. The pair of inclined guide walls 17 are connected to the barrier wall 16 and form a triangular recess with an open upper surface when viewed from a plane. The connecting corners with the walls 16 each face onto the combustion chamber 3 . Therefore, the cooling water flowing from the cylinder block 2 side through the cooling water inlet 15 into the water jacket 14 of the cylinder head 1 is guided by the pair of inclined guide walls 17 as shown by the arrows in FIGS. It is possible to branch the flow toward the adjacent combustion chamber 3 and cool the combustion chamber 3 and high-temperature heating parts such as the spark plug 12.
また前記傾斜案内壁１７．１７は吸、排気ポート９．１
０の壁面と一体化されており、ウォータジャケット１４
の補強部材となっている。Further, the inclined guide wall 17.17 has suction and exhaust ports 9.1.
Water jacket 14 is integrated with the wall surface of 0.
It serves as a reinforcing member.
シリンダヘッド１の一端（第４図右端）には前記ウォー
タジャケット１４の出口２２が形成される。An outlet 22 of the water jacket 14 is formed at one end of the cylinder head 1 (the right end in FIG. 4).
なお図中１９は、シリンダヘッド１に形成される他のウ
ォータジャケット、２０はボルト孔、２１はウォータジ
ャケット１４の開口を閉じる栓体である。In the figure, 19 is another water jacket formed in the cylinder head 1, 20 is a bolt hole, and 21 is a plug for closing the opening of the water jacket 14.
次にこの実施例の作用について説明する。Next, the operation of this embodiment will be explained.
シリンダブロック２側のウォータジャケットかららの冷
却水の一部は、隣接する燃焼室３間の一対の冷却水流入
口１５を通ってシリンダヘッド１側のウォータジャケッ
ト１４内に流入し、誘導溝１８に誘導されてウォータジ
ャケット１４の中央部に導かれる。A portion of the cooling water from the water jacket on the cylinder block 2 side flows into the water jacket 14 on the cylinder head 1 side through a pair of cooling water inlets 15 between adjacent combustion chambers 3, and flows into the guide groove 18. The water is guided to the center of the water jacket 14.
而して各流入口１５の左右に位置する一対の傾斜案内壁
１７は、冷却水を左右の燃焼室３に向って分流するよう
に案内し、さらに前記衝壁１６は一対の冷却水流入口１
５から相互に逆向きに流れる冷却水を衝突することな（
それぞれ燃焼室３に向けて誘導し、その結果冷却水は燃
焼室３の土壁。A pair of inclined guide walls 17 located on the left and right sides of each inlet 15 guide the cooling water so as to separate it toward the left and right combustion chambers 3 .
Avoid colliding the cooling water flowing in opposite directions from 5 (
Each of them is guided toward the combustion chamber 3, and as a result, the cooling water is directed to the earthen wall of the combustion chamber 3.
吸、排気ボート９．１０の外壁、およびプラグ収容筒１
３の外壁に沿って流れ、燃焼室３、吸、排気ポー）９．
ＴＯおよび点火グラブ１２を有効に冷却することができ
る。Outer walls of suction and exhaust boats 9 and 10, and plug housing tube 1
Flows along the outer wall of combustion chamber 3, intake and exhaust ports)9.
The TO and ignition glove 12 can be effectively cooled.
また前記傾斜案内壁１７はウォータジャケット１４を吸
、排気ボー）９．１０に一体に結合しており、ウォータ
ジャケット１４の剛性向上につなが９、該ジャケント１
４の薄肉化を図ることができる。In addition, the inclined guide wall 17 is integrally connected to the intake and exhaust bows 9 and 10 for the water jacket 14, which improves the rigidity of the water jacket 14.
4 can be made thinner.
Ｃ０発明の効果
以上の実施例により明らかなように、本発明によれば、
隣接する燃焼室間のシリンダヘッドの底壁忙該燃焼室の
配列方向と略直交し、かつウォータシャケツナの中央部
に向い上シ勾配に傾斜して該ウォータジャケットに連通
ずる冷却水流入口を穿設し、さらにウォータジャケット
には、冷却水流入口よシ該ジャケット内に流入した冷却
水を燃焼室に向けて誘導するための傾斜案内壁を一体に
形成したので、冷たい冷却水を積極的に燃焼室、点火プ
ラグ、吸、排気ポートの周囲に導いてそれらを有効に冷
却することができ、その結果、燃焼室間の間隔を狭めて
も燃焼室回りの冷却に支障を及ぼすことなく、機関本体
の軽食化、コンパクト化を図ることができる。Effects of C0 Invention As is clear from the above examples, according to the present invention,
A cooling water inlet is bored in the bottom wall of the cylinder head between adjacent combustion chambers, which is substantially perpendicular to the direction in which the combustion chambers are arranged, and which is inclined upwardly toward the center of the water jacket and communicates with the water jacket. Furthermore, the water jacket is integrally formed with an inclined guide wall to guide the cooling water that has flowed into the jacket from the cooling water inlet toward the combustion chamber, so that the cold cooling water can be actively combusted. The combustion chamber, spark plug, intake, and exhaust ports can be effectively cooled by cooling them.As a result, even if the distance between the combustion chambers is narrowed, cooling around the combustion chambers will not be affected. can be made lighter and more compact.
また前記傾斜案内壁はウォータジャケット自体の補強部
材となジ、該ジャケットの薄肉化に寄与することができ
る。Further, the inclined guide wall serves as a reinforcing member for the water jacket itself, and can contribute to making the jacket thinner.
図面は本発明の一実施例を示すもので、第１図はシリン
ダヘッドの一部の平面図、第２図は、第１図および第４
図Ｉ［−Ｕ線に沿う縦断面図、第３図は、第４図ＩｒＪ
−ＩＩＩ線に沿う縦断面図、第４図は、第２図ＩＶ−Ｉ
Ｖ線に沿う横断面図、第５図は、第４図Ｖ −Ｖ線に沿
う縦断面図、第６図は、第４図■−Ｖｌ線に沿う縦断面
図である。
３・・・燃焼室、１４・・・ウォータジャケット、１５
・・・冷却水流入口、１γ・・傾斜案内壁特許出願人
本田技研工業株式会社
第１図
ｉ−１
第３図
第２図The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a part of the cylinder head, and FIG. 2 is a plan view of a part of the cylinder head.
Figure 3 is a vertical sectional view taken along line I
The longitudinal cross-sectional view along the line -III, Figure 4, is the same as Figure 2 IV-I.
5 is a longitudinal sectional view taken along line V--V in FIG. 4, and FIG. 6 is a longitudinal sectional view taken along line 2--Vl in FIG. 4. 3... Combustion chamber, 14... Water jacket, 15
...Cooling water inlet, 1γ...Inclination guide wall patent applicant
Honda Motor Co., Ltd. Figure 1 i-1 Figure 3 Figure 2
Claims (1)
室上にウォータジャケットを形成してなる多気筒内燃機
関のシリンダヘッドにおいて、隣接する燃焼室間の、シ
リンダヘッドの底壁に、前記複数の燃焼室の配列方向と
略直交し、かつウォータジャケットの中央部に向い上り
勾配に傾斜して該ウォータジャケットに連通する冷却水
流入口を穿設し、さらに前記ウォータジャケットの内壁
には、前記冷却水流入口より該ジャケット内に流入した
冷却水を前記燃焼室に向けて誘導するための傾斜案内壁
を一体に形成したことを特徴とする多気筒内燃機関のシ
リンダヘッドの冷却装置。In a cylinder head of a multi-cylinder internal combustion engine in which a plurality of combustion chambers are arranged on the bottom wall and a water jacket is formed on the combustion chambers, the plurality of combustion chambers are arranged on the bottom wall of the cylinder head between adjacent combustion chambers. A cooling water inlet is provided in the water jacket, which is substantially perpendicular to the direction in which the combustion chambers are arranged, and which is inclined upward in the center of the water jacket and communicates with the water jacket. A cooling device for a cylinder head of a multi-cylinder internal combustion engine, characterized in that an inclined guide wall for guiding cooling water flowing into the jacket from a water inlet toward the combustion chamber is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60157793A JPH0762464B2 (en) | 1985-07-17 | 1985-07-17 | Cooling device for cylinder head of multi-cylinder internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60157793A JPH0762464B2 (en) | 1985-07-17 | 1985-07-17 | Cooling device for cylinder head of multi-cylinder internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6220655A true JPS6220655A (en) | 1987-01-29 |
| JPH0762464B2 JPH0762464B2 (en) | 1995-07-05 |
Family
ID=15657408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60157793A Expired - Lifetime JPH0762464B2 (en) | 1985-07-17 | 1985-07-17 | Cooling device for cylinder head of multi-cylinder internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0762464B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005093243A1 (en) | 2004-03-27 | 2005-10-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled cylinder head for a multi-cylinder internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069347U (en) * | 1983-10-19 | 1985-05-16 | 本田技研工業株式会社 | Cylinder head structure |
| JPS6090957A (en) * | 1983-10-22 | 1985-05-22 | Mazda Motor Corp | Structure of cylinder head for engine |
-
1985
- 1985-07-17 JP JP60157793A patent/JPH0762464B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069347U (en) * | 1983-10-19 | 1985-05-16 | 本田技研工業株式会社 | Cylinder head structure |
| JPS6090957A (en) * | 1983-10-22 | 1985-05-22 | Mazda Motor Corp | Structure of cylinder head for engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005093243A1 (en) | 2004-03-27 | 2005-10-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled cylinder head for a multi-cylinder internal combustion engine |
| US7128028B2 (en) | 2004-03-27 | 2006-10-31 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Water-cooled cylinder head for a multicylinder internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0762464B2 (en) | 1995-07-05 |
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