JPH037562Y2 - - Google Patents
Info
- Publication number
- JPH037562Y2 JPH037562Y2 JP1985117844U JP11784485U JPH037562Y2 JP H037562 Y2 JPH037562 Y2 JP H037562Y2 JP 1985117844 U JP1985117844 U JP 1985117844U JP 11784485 U JP11784485 U JP 11784485U JP H037562 Y2 JPH037562 Y2 JP H037562Y2
- Authority
- JP
- Japan
- Prior art keywords
- guide rib
- combustion chambers
- cooling water
- water jacket
- rib piece
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 48
- 239000000498 cooling water Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
Ａ 考案の目的
(1) 産業上の利用分野
本考案は多気筒内燃機関の機関本体の一部を構
成するシリンダヘツドの冷却装置に関するもので
ある。[Detailed Description of the Invention] A. Purpose of the Invention (1) Field of Industrial Application The present invention relates to a cooling device for a cylinder head that constitutes 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ツドにおい
て、複数の燃焼室の上方にウオータジヤケツトを
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 of 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 Japanese Patent Application Laid-open No. 79141/1983. It is.
(3) 考案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、そのための一手段として機関本体の隣接する
シリンダ間の間隙を、サイアミーズシリンダに見
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、シリンダヘ
ツドの、燃焼室間の間隔も狭くなり、燃焼室回り
の熱負荷が増加し、またシリンダヘツド、特に隣
接する燃焼室間の薄肉化によりシリンダヘツド全
体の剛性低下を招くという問題がある。(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, and one way to achieve this is to A cylinder with the gap as narrow as possible has appeared, as seen in the Siamese cylinder. However, if this is done, the spacing between the combustion chambers in the cylinder head will become narrower, increasing the heat load around the combustion chambers, and the rigidity of the cylinder head as a whole will decrease due to thinning of the cylinder head, especially between adjacent combustion chambers. There is a problem of inviting
本考案は上記実情にかんがみてなされたもの
で、軽合金製シリンダヘツド、特にその燃焼室回
りの水冷却性を向上させるとともにその剛性を高
めるようにした構成簡単な多気筒内燃機関におけ
るシリンダヘツ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 developed in view of the above-mentioned circumstances, and is intended to improve the water cooling performance of light alloy cylinder heads, especially around the combustion chambers, as well as increase the rigidity of the cylinder heads in multi-cylinder internal combustion engines with a simple structure. The purpose is to provide a cooling device.
Ｂ 考案の構成
(1) 問題点を解決するための手段
上記目的を達成するために本考案は、底壁に複
数の燃焼室が配列されると共にそれらの燃焼室上
にウオータジヤケツトを形成してなる、多気筒内
燃機関のシリンダヘツドにおいて、隣接する燃焼
室間の、前記ウオータジヤケツトの底面には、そ
の両燃焼室の、隣接する吸気弁座部分の外周壁相
互間を一体に連結する第１の案内リブ片と、同じ
くその両燃焼室の、隣接する排気弁座部分の外周
壁相互間を連結する第２の案内リブ片とを一体に
立設し、前記ウオータジヤケツトの底壁には、前
記第１の案内リブ片の側面に指向する第１の冷却
水流入口と、前記第２の案内リブ片の側面に指向
する第２の冷却水流入口とを開口したことを特徴
とする。B. Structure of the invention (1) Means for solving the problems In order to achieve the above object, the invention includes a plurality of combustion chambers arranged on the bottom wall and a water jacket formed over the combustion chambers. In a cylinder head of a multi-cylinder internal combustion engine, the bottom surface of the water jacket between adjacent combustion chambers integrally connects the outer peripheral walls of adjacent intake valve seat portions of both combustion chambers. A first guide rib piece and a second guide rib piece connecting the outer circumferential walls of adjacent exhaust valve seat portions of both combustion chambers are integrally erected, and the bottom wall of the water jacket A first cooling water inlet facing the side surface of the first guide rib piece and a second cooling water inlet facing the side face of the second guide rib piece are opened. .
(2) 作用
第１の冷却水流入口よりウオータジヤケツト内
に流入した冷却水を第１の案内リブ片によつて、
相隣なる両燃焼室の、隣接する吸気弁座部分の外
周壁に積極的に導くことができ、また第２の冷却
水流入口よりウオータジヤケツト内に流入した冷
却水を第２の案内リブ片によつて、同じく両燃焼
室の、隣接する排気弁座部分の外周壁に積極的に
導くことができる。従つて、側面に各冷却水流入
口が指向し比較的冷やされ易い該案内リブ片自身
が、上記弁座部分の外周壁に接していて、その間
の熱伝導性が良好であることと相俟つて、過熱し
易い吸、排気弁座部分を効果的に冷却することが
できる。(2) Effect Cooling water flowing into the water jacket from the first cooling water inlet is guided by the first guide rib piece.
The cooling water that has flowed into the water jacket from the second cooling water inlet can be actively guided to the outer circumferential wall of the adjacent intake valve seat portions of both adjacent combustion chambers, and the cooling water that has flowed into the water jacket from the second cooling water inlet can be guided to the second guide rib piece. Accordingly, the exhaust gas can be positively guided to the outer circumferential walls of the adjacent exhaust valve seat portions of both combustion chambers. Therefore, the guide rib piece itself, which has each cooling water inlet facing toward the side surface and is relatively easily cooled, is in contact with the outer circumferential wall of the valve seat portion, and the thermal conductivity therebetween is good. It is possible to effectively cool the intake and exhaust valve seats, which tend to overheat.
しかも前記両燃焼室の、隣接する比較的剛性の
大きい上記弁座部分外周壁相互を前記各案内リブ
片を介して一体に結合することにより、その隣接
する弁座部分外周壁が相互に補強し合う形となつ
て、ウオータジヤケツト自体を効果的に補強する
ことができる。 Furthermore, by integrally connecting the relatively rigid outer circumferential walls of the adjacent valve seat portions of both combustion chambers through the guide rib pieces, the outer circumferential walls of the adjacent valve seat portions are mutually reinforced. With a matching shape, the water jacket itself can be effectively reinforced.
また特に各案内リブ片は、温度傾向が比較的近
い同種の弁ポートの弁座部分外周壁相互を連結
し、且つその各案内リブ片の側面に別々に冷却水
流入口を指向させるようにしているから、該同種
の弁ポートの弁座部分外周壁の温度傾向に合わせ
て各冷却水流入口の向きや開口面積を設定するこ
とができる。 In particular, each guide rib piece connects the outer circumferential walls of the valve seat portions of valve ports of the same type with relatively similar temperature trends, and the cooling water inlets are directed separately to the side surfaces of each guide rib piece. Therefore, the direction and opening area of each cooling water inlet can be set in accordance with the temperature trend of the outer circumferential wall of the valve seat portion of the valve port of the same type.
(3) 実施例
以下、図面により本考案の実施例について説明
する。(3) Examples Examples 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
するアルミ合金製シリンダヘツド１は、第２図に
示すようにシリンダブロツク２上にガスケツトを
介して重合結着され、該シリンダヘツド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、シリンダブロツク２のシリンダ４に開口
する。 An aluminum alloy cylinder head 1 constituting the head of the engine body of a four-valve, four-cylinder internal combustion engine is polymerized and bonded onto a cylinder block 2 via a gasket, as shown in FIG. A plurality of combustion chambers 3 are arranged on the bottom wall, and their open lower surfaces open into the cylinders 4 of the cylinder block 2.
各燃焼室３の上壁には、吸気弁５，５によつて
開閉される一対の弁座６1，６1を有する吸気弁口
６，６と、排気弁７，７によつて開閉される一対
の弁座８1，８1を有する排気弁口８，８とが対設
され、一対の吸気弁口６，６は、シリンダヘツド
１に形成した二叉状の吸気ポート９に連通され、
また一対の排気弁口８，８はシリンダヘツド１に
形成した二叉状の排気ポート１０に連通される。 The upper wall of each combustion chamber 3 has intake valve ports 6, 6 having a pair of valve seats 61 , 61 which are opened and closed by intake valves 5, 5, and intake valve ports 6, 6 which are opened and closed by exhaust valves 7, 7. Exhaust valve ports 8 and 8 having a pair of valve seats 8 1 and 8 1 are arranged opposite to each other, and a pair of intake valve ports 6 and 6 are communicated with a bifurcated intake port 9 formed in the cylinder head 1 . ,
Further, the pair of exhaust valve ports 8, 8 communicate with a bifurcated 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
上壁より上方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 a spark plug 12 is screwed into the screw hole 11. The lower half of the spark plug 12 is located above the upper wall of the combustion chamber 3. The plug is housed in an extending hollow cylindrical plug housing tube 13.
シリンダヘツド１には、複数の燃焼室３の配列
方向に沿つてウオータジヤケツト１４が形成さ
れ、このウオータジヤケツト１４内に、複数の燃
焼室３の上壁、吸、排気ポート９，１０の外周壁
および複数のプラグ収容筒１３の外周壁が直接臨
んでいる。 A water jacket 14 is formed in the cylinder head 1 along the direction in which the plurality of combustion chambers 3 are arranged. The outer circumferential wall and the outer circumferential walls of the plurality of plug accommodating cylinders 13 directly face each other.
第３〜５図に示すように相隣れる燃焼室３，３
間において、シリンダヘツド１の底壁１1には一
対の吸、排気側冷却水流入口１５ｉ，１５ｅが穿
設され、排気側流入口１５ｅは吸気側流入口１５
ｉよりも大径である。これらの流入口１５ｉ，１
５ｅは第３図に示すように複数の燃焼室３の配列
方向と直交しウオータジヤケツト１４の中央部に
向つて上り勾配に傾斜されて前記ウオータジヤケ
ツト１４に連通され、シリンダブロツク２側の冷
却水の一部は前記一対の流入口１５ｉ，１５ｅを
通つてウオータジヤケツト１４内に流入するよう
になつている。隣接する燃焼室３，３間におい
て、前記ウオータジヤケツト１４の底面には、複
数の燃焼室３……の配列方向に沿つて、すなわち
前記一対の冷却水流入口１５ｉ，１５ｅの傾斜方
向に略直交して一対の案内リブ片１６ｉ，１６ｅ
が立設され、一方の案内リブ片１６ｉの両端は、
隣接する燃焼室３，３の各吸気ポート９，９の弁
座６1，６1部分の外周壁に連接され、それらの外
周壁に一体に結合され、また他方の案内リブ片１
６ｅの両端は隣接する燃焼室３，３の各排気ポー
ト１０，１０の弁座８1，８1部分の外周壁に連接
され、それらの外周壁に一体に結合される。また
一対の案内リブ片１６ｉ，１６ｅの側面は前記一
対の冷却水流入口１５ｉ，１５ｅの出口に対向し
ており、前記流入口１５ｉ，１５ｅよりウオータ
ジヤケツト１４内に流入した冷却水は、第３，４
図に矢線で示すように一対の案内リブ片１６ｉ，
１６ｅの側面に衝き当つたのち、該側面に案内さ
れて左右に分流され、吸、排気ポート９，９；１
０，１０の弁座６1，６1；８1，８1部分の外周壁
に向つて流れる。 As shown in Figures 3 to 5, adjacent combustion chambers 3, 3
In between, a pair of intake and exhaust side cooling water inlets 15i and 15e are bored in the bottom wall 11 of the cylinder head 1, and the exhaust side inlet 15e is connected to the intake side inlet 15.
It has a larger diameter than i. These inlets 15i, 1
5e is perpendicular to the arrangement direction of the plurality of combustion chambers 3 and is inclined upwardly toward the center of the water jacket 14 to communicate with the water jacket 14, as shown in FIG. A portion of the cooling water flows into the water jacket 14 through the pair of inlets 15i and 15e. Between the adjacent combustion chambers 3, 3, on the bottom surface of the water jacket 14, a hole is provided on the bottom surface of the water jacket 14 along the arrangement direction of the plurality of combustion chambers 3, that is, approximately perpendicular to the inclination direction of the pair of cooling water inlets 15i, 15e. A pair of guide rib pieces 16i, 16e
is erected, and both ends of one guide rib piece 16i are
It is connected to the outer circumferential wall of the valve seat 6 1 , 6 1 portion of each intake port 9 , 9 of the adjacent combustion chambers 3 , 3 , is integrally connected to those outer circumferential walls, and is connected to the other guide rib piece 1 .
Both ends of 6e are connected to the outer circumferential walls of the valve seats 8 1 , 8 1 portions of the respective exhaust ports 10 , 10 of the adjacent combustion chambers 3 , 3 , and are integrally coupled to those outer circumferential walls. Further, the side surfaces of the pair of guide rib pieces 16i, 16e face the outlets of the pair of cooling water inlets 15i, 15e, and the cooling water flowing into the water jacket 14 from the inlets 15i, 15e is ,4
As shown by arrows in the figure, a pair of guide rib pieces 16i,
After colliding with the side surface of 16e, the flow is guided by the side surface and divided to the left and right, leading to intake and exhaust ports 9, 9;
It flows toward the outer peripheral wall of the valve seats 6 1 , 6 1 ; 8 1 , 8 1 of valve seats 0, 10.
また前記一対の案内リブ片１６ｉ，１６ｅの両
端は吸、排気ポート９，９；１０，１０の外周壁
に一体に結合され、ウオータジヤケツト１４の補
強部材となつている。 Further, both ends of the pair of guide rib pieces 16i, 16e are integrally connected to the outer circumferential walls of the intake and exhaust ports 9, 9; 10, 10, and serve as reinforcing members for the water jacket 14.
シリンダヘツド１の一端（第４図右端）には前
記ウオータジヤケツト１４の出口１７が形成され
る。 An outlet 17 for the water jacket 14 is formed at one end of the cylinder head 1 (the right end in FIG. 4).
なお図中１８はシリンダブロツク２の上面に開
口される冷却水の流出口、１９は、シリンダヘツ
ド１に形成される他のウオータジヤケツト、２０
はボルト孔、２１はウオータジヤケツト１４の開
口を閉じる栓体、である。 In the figure, 18 is a cooling water outlet opened on the top surface of the cylinder block 2, 19 is another water jacket formed in the cylinder head 1, and 20 is a cooling water outlet.
21 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.
シリンダブロツク２側のウオータジヤケツトの
流出口１８か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１５ｉ，１５ｅを通
つてシリンダヘツド１側のウオータジヤケツト１
４内に流入する。ウオータジヤケツト１４内に流
入した冷却水は、第３，４図矢線で示すように案
内リブ片１６ｉ，１６ｅの側面に衝き当つたのち
該側面に沿つて左右に分流し、吸、排気ポート
９，９；１０，１０の弁座６1，６1；８1，８1の
外周壁に沿つて流れ、燃焼室３，３周り、特に高
温に加熱される吸、排気ポート９，１０の弁座６
１，６1；８1，８1を有効に冷却することができ
る。また案内リブ片１６ｉ，１６ｅの両端が吸、
排気ポート９，９；１０，１０の外周壁に一体に
結合されることにより、ウオージヤケツト１４の
剛性向上につながり、該ジヤケツト１４の薄肉化
が可能になる。 A part of the cooling water from the water jacket outlet 18 on the cylinder block 2 side passes through a pair of cooling water inlets 15i and 15e between the adjacent combustion chambers 3, and flows into the water jacket 1 on the cylinder head 1 side.
4. The cooling water that has flowed into the water jacket 14 hits the side surfaces of the guide rib pieces 16i and 16e as shown by the arrows in FIGS. The flow flows along the outer peripheral walls of the valve seats 6 1 , 6 1 ; 8 1 , 8 1 of the valve seats 6 1 , 6 1 ; 8 1 , 8 1 of the valve seats 9, 9; Valve seat 6
1 , 6 1 ; 8 1 , 8 1 can be effectively cooled. Also, both ends of the guide rib pieces 16i and 16e are sucked,
By being integrally connected to the outer circumferential walls of the exhaust ports 9, 9; 10, 10, the rigidity of the jacket 14 is improved, and the jacket 14 can be made thinner.
なお前記実施例において、吸、排気ポート９，
１０は本考案における弁ポートを構成する。 In the above embodiment, the intake and exhaust ports 9,
10 constitutes a valve port in the present invention.
Ｃ 考案の効果
以上の実施例により明らかなように、本考案に
よれば、多気筒内燃機関のシリンダヘツドにおい
て、隣接する燃焼室間の、前記ウオータジヤケツ
トの底面には、その両燃焼室の、隣接する吸気弁
座部分の外周壁相互間を一体に連結する第１の案
内リブ片と、同じくその両燃焼室の、隣接する排
気弁座部分の外周壁相互間を連結する第２の案内
リブ片とを一体に立設し、前記ウオータジヤケツ
トの底壁には、前記第１の案内リブ片の側面に指
向する第１の冷却水流入口と、前記第２の案内リ
ブ片の側面に指向する第２の冷却水流入口とを開
口したので、第１の冷却水流入口よりウオータジ
ヤケツト内に流入した冷却水を第１の案内リブ片
によつて、前記両燃焼室の、隣接する吸気弁座部
分の外周壁に積極的に導くことができ、また第２
の冷却水流入口よりウオータジヤケツト内に流入
した冷却水を第２の案内リブ片によつて、同じく
両燃焼室の、隣接する排気弁座部分の外周壁に積
極的に導くことができ、従つて、側面に各冷却水
流入口が指向し比較的冷やされ易い該案内リブ片
自身が上記弁座部分の外周壁に接していてその間
の熱伝導性が良好であることと相俟つて、燃焼室
回り、特に加熱され易く焼付等のトラブルを生起
する虞れのある吸、排気弁座部分を効果的に冷却
することができるから、隣接する燃焼室間の間隔
を狭めても燃焼室回りの冷却性を大幅に高めるこ
とができ、機関本体の軽量小型化に寄与すること
ができる。しかも前記両燃焼室の、隣接する比較
的剛性の大きい上記弁座部分外周壁相互を前記各
案内リブ片を介して一体に結合することにより、
その隣接する弁座部分外周壁が相互に補強し合う
形となつて、ウオータジヤケツト自体を効果的に
補強することができるから、該ジヤケツトの薄肉
化に寄与することができ、またその各案内リブ片
がウオータジヤケツトに対する補強リブと、前述
のような冷却水案内手段とに兼用されることで、
それだけシリンダヘツドの内部構造の簡素化を図
り、コストダウンに寄与することができる。C. Effects of the invention As is clear from the above embodiments, according to the invention, in the cylinder head of a multi-cylinder internal combustion engine, the bottom surface of the water jacket between adjacent combustion chambers is provided with a , a first guide rib piece that integrally connects the outer circumferential walls of adjacent intake valve seat portions, and a second guide piece that also connects the outer circumferential walls of adjacent exhaust valve seat portions of both combustion chambers. The bottom wall of the water jacket has a first cooling water inlet oriented toward the side surface of the first guide rib piece, and a first cooling water inlet oriented toward the side surface of the second guide rib piece. Since the second cooling water inlet is opened, the cooling water flowing into the water jacket from the first cooling water inlet is directed to the adjacent intake air of both combustion chambers by the first guide rib piece. It can be actively guided to the outer peripheral wall of the valve seat part, and the second
The cooling water that has flowed into the water jacket from the cooling water inlet can be actively guided to the outer circumferential wall of the adjacent exhaust valve seat portion of both combustion chambers by the second guide rib piece. In addition, the guide rib piece itself, which has each cooling water inlet facing toward the side surface and is relatively easily cooled, is in contact with the outer circumferential wall of the valve seat portion and has good thermal conductivity therebetween, and this together with the fact that the combustion chamber This allows for effective cooling of the intake and exhaust valve seats, which are particularly susceptible to heating and can cause problems such as seizure, so even if the distance between adjacent combustion chambers is narrowed, cooling around the combustion chambers will be improved. This can greatly improve the performance and contribute to making the engine body lighter and smaller. Moreover, by integrally connecting the adjacent outer circumferential walls of the relatively rigid valve seat portions of both combustion chambers via the guide rib pieces,
The outer circumferential walls of the adjacent valve seat portions are mutually reinforcing, thereby effectively reinforcing the water jacket itself, which contributes to the thinning of the jacket, and also reduces the thickness of each guide. The rib pieces serve both as reinforcing ribs for the water jacket and as the cooling water guiding means as described above.
This makes it possible to simplify the internal structure of the cylinder head and contribute to cost reduction.
また特に前記各案内リブ片は、温度傾向が比較
的近い同種の弁ポートの弁座部分外周壁相互を連
結し、且つその各案内リブ片の側面に別々に冷却
水流入口を指向させるようにしているから、該同
種の弁ポートの弁座部分外周壁の温度傾向に合わ
せて各冷却水流入口の向きや開口面積を設定する
ことができ、従つてその温度傾向に即した効率の
高く且つ合理的な冷却が可能となる。 In particular, each of the guide rib pieces connects the outer circumferential walls of the valve seat portions of valve ports of the same type with relatively similar temperature trends, and the cooling water inlets are directed separately to the side surfaces of each of the guide rib pieces. Therefore, it is possible to set the direction and opening area of each cooling water inlet according to the temperature trend of the outer peripheral wall of the valve seat part of the same type of valve port, and therefore, it is possible to set the direction and opening area of each cooling water inlet in accordance with the temperature trend. This allows for efficient cooling.
図面は本考案の一実施例を示すもので、第１図
はシリンダヘツドの一部の底面図、第２図は第１
図−線断面図、第３図は第１図−線断面
図、第４図は第２図−線断面図である。
３……燃焼室、６1，８1……弁座、９，１０…
…吸、排気ポート、１４……ウオータジヤケツ
ト、１５ｉ，１５ｅ……第１、第２の冷却水流入
口、１６ｉ，１６ｅ……第１、第２の案内リブ
片。
The drawings show one embodiment of the present invention; FIG. 1 is a bottom view of a part of the cylinder head, and FIG. 2 is a partial bottom view of the cylinder head.
3 is a sectional view taken along the line in FIG. 1, and FIG. 4 is a sectional view taken along the line shown in FIG. 2. 3... Combustion chamber, 6 1 , 8 1 ... Valve seat, 9, 10...
... Suction and exhaust ports, 14... Water jacket, 15i, 15e... First and second cooling water inlets, 16i, 16e... First and second guide rib pieces.
Claims (1)
らの燃焼室３上にウオータジヤケツト１４を形成
してなる、多気筒内燃機関のシリンダヘツドにお
いて、隣接する燃焼室３間の、前記ウオータジヤ
ケツト１４の底面には、その両燃焼室の、隣接す
る吸気弁座６1部分の外周壁相互間を一体に連結
する第１の案内リブ片１６ｉと、同じくその両燃
焼室３の、隣接する排気弁座８1部分の外周壁相
互間を連結する第２の案内リブ片１６ｅとを一体
に立設し、前記ウオータジヤケツト１４の底壁に
は、前記第１の案内リブ片１６ｉの側面に指向す
る第１の冷却水流入口１５ｉと、前記第２の案内
リブ片１６ｅの側面に指向する第２の冷却水流入
口１５ｅとを開口したことを特徴とする、多気筒
内燃機関におけるシリンダヘツドの冷却装置。 In a cylinder head of a multi-cylinder internal combustion engine in which a plurality of combustion chambers 3 are arranged on the bottom wall and a water jacket 14 is formed on the combustion chambers 3, the water jacket between adjacent combustion chambers 3 is provided. On the bottom surface of the butt 14, there is a first guide rib piece 16i that integrally connects the outer circumferential walls of the adjacent intake valve seats 61 of both combustion chambers, and a first guide rib piece 16i that integrally connects the outer peripheral walls of the adjacent intake valve seats 61 of both combustion chambers 3. A second guide rib piece 16e connecting the outer peripheral walls of one portion of the exhaust valve seat 8 is integrally provided, and a side surface of the first guide rib piece 16i is provided on the bottom wall of the water jacket 14. A cylinder head in a multi-cylinder internal combustion engine, characterized in that a first cooling water inlet 15i facing toward the cylinder head and a second cooling water inlet 15e facing the side surface of the second guide rib piece 16e are opened. Cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985117844U JPH037562Y2 (en) | 1985-07-31 | 1985-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985117844U JPH037562Y2 (en) | 1985-07-31 | 1985-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6226540U JPS6226540U (en) | 1987-02-18 |
| JPH037562Y2 true JPH037562Y2 (en) | 1991-02-25 |
Family
ID=31003738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985117844U Expired JPH037562Y2 (en) | 1985-07-31 | 1985-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH037562Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007064106A (en) * | 2005-08-31 | 2007-03-15 | Kawasaki Heavy Ind Ltd | Engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748B2 (en) * | 1972-09-11 | 1982-01-05 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748U (en) * | 1980-06-02 | 1982-01-05 | ||
| JPS58180349U (en) * | 1982-05-28 | 1983-12-02 | 株式会社小松製作所 | Cylinder head structure for diesel engine |
| JPS6069347U (en) * | 1983-10-19 | 1985-05-16 | 本田技研工業株式会社 | Cylinder head structure |
-
1985
- 1985-07-31 JP JP1985117844U patent/JPH037562Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748B2 (en) * | 1972-09-11 | 1982-01-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6226540U (en) | 1987-02-18 |
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