JPH0214541B2 - - Google Patents
Info
- Publication number
- JPH0214541B2 JPH0214541B2 JP59270333A JP27033384A JPH0214541B2 JP H0214541 B2 JPH0214541 B2 JP H0214541B2 JP 59270333 A JP59270333 A JP 59270333A JP 27033384 A JP27033384 A JP 27033384A JP H0214541 B2 JPH0214541 B2 JP H0214541B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- cooling water
- head
- camshaft
- port side
- 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 - Lifetime
Links
- 239000000498 cooling water Substances 0.000 claims description 28
- 230000037431 insertion Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F02F1/26—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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
-
- 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)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はエンジンのシリンダヘツド、特にアツ
パデツキとロアデツキとの間に冷却水通路が設け
られ、且つアツパデツキの上方にカムシヤフトの
軸受孔が設けられたシリンダヘツドの構造に関す
る。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a cooling water passage between the cylinder head of an engine, particularly between an upper deck and a lower deck, and a bearing hole for a camshaft is provided above the upper deck. Regarding the structure of the cylinder head.
（従来技術）
一般にエンジンの燃焼室は、シリンダブロツク
と該ブロツクの上面にヘツドボルトを用いて取付
けられるシリンダヘツドとにより形成されるが、
上記シリンダヘツドは中空状とされ、その中空部
内が冷却水通路とされる。(Prior Art) Generally, the combustion chamber of an engine is formed by a cylinder block and a cylinder head attached to the top surface of the block using head bolts.
The cylinder head is hollow, and the inside of the hollow portion serves as a cooling water passage.
一方、例えば実開昭56−41134号公報に開示さ
れているように、オーバーヘツドカムシヤフト式
の動弁機構を有するエンジンにおいては、シリン
ダヘツドのアツパデツキ上方における隣接気筒間
及び両端部に軸受壁が立設され、これらの軸受壁
に同芯状にカムシヤフトの軸受孔が設けられる
が、シリンダヘツドは上記のように中空状とされ
ているため、ヘツドボルトでシリンダブロツクに
締め付けられた際に生じる応力や燃焼熱による熱
膨張等により歪が生じ、上記軸受孔が変形すると
いう問題が生じる。この問題に対しては、例えば
冷却水通路内に上記軸受孔に対応位置させてリブ
を設けることにより、該軸受孔周辺の剛性を高め
ることが考えられるが、冷却水通路内にリブを設
ける場合、その設け方によつては、冷却水の流れ
が妨げられたり、該通路内に空気が滞留する箇所
が生じたりして、熱交換効率が悪化するといつた
弊害を招くことになる。 On the other hand, as disclosed in Japanese Utility Model Application Publication No. 56-41134, for example, in an engine having an overhead camshaft type valve mechanism, bearing walls are provided between adjacent cylinders above the top deck of the cylinder head and at both ends. The bearing holes for the camshaft are provided concentrically in these bearing walls, but since the cylinder head is hollow as described above, there is no stress caused when the head bolt is tightened to the cylinder block. A problem arises in that the bearing hole is deformed due to distortion caused by thermal expansion caused by combustion heat. To solve this problem, for example, it is possible to increase the rigidity around the bearing hole by providing a rib in the cooling water passage in a position corresponding to the bearing hole, but if a rib is provided in the cooling water passage, Depending on how they are provided, the flow of cooling water may be obstructed or air may accumulate in the passages, leading to problems such as deterioration of heat exchange efficiency.
（発明の目的）
本発明はエンジンのシリンダヘツド、特にオー
バーヘツドカムシヤフト式エンジンのシリンダヘ
ツドに関する上記のような実情に対処するもの
で、アツパデツキの上方に設けられたカムシヤフ
トの軸受孔周辺の剛性を高めて、ヘツドボルトの
締め付け等による軸受孔の変形を防止すると共
に、該シリンダヘツド内部の冷却水通路内におけ
る空気の滞留を防止し且つ冷却水の良好な流れを
確保し、さらにシリンダヘツドの特に高温となる
排気ポート側を効果的に冷却し、これにより該ヘ
ツドに対する所要の冷却性能を確保することを目
的とする。(Objective of the Invention) The present invention addresses the above-mentioned circumstances regarding the cylinder head of an engine, particularly the cylinder head of an overhead camshaft type engine. This prevents deformation of the bearing hole due to tightening of the head bolt, etc., and also prevents air from stagnation in the cooling water passage inside the cylinder head and ensures a good flow of cooling water. The purpose of this invention is to effectively cool the exhaust port side of the head, thereby ensuring the required cooling performance for the head.
（発明の構成）
本発明に係るシリンダヘツド構造は、上記目的
達成のため次のように構成したことを特徴とす
る。(Structure of the Invention) The cylinder head structure according to the present invention is characterized in that it is structured as follows in order to achieve the above object.
即ち、シリンダヘツド上面のカムシヤフト軸方
向に見てシリンダボアの上方位置に該カムシヤフ
トの軸受孔が設けられ、且つ該シリンダヘツド下
面の裏側に沿つて冷却水通路が、また上記軸受孔
の両側にシリンダヘツド締結用ヘツドボルトの挿
入孔を有するヘツドボルトボスがそれぞれ設けら
れたオーバーヘツドカムシヤフト式エンジンのシ
リンダヘツドにおいて、上記冷却水通路の上壁を
排気ポート側が吸気ポート側より高くなるように
設定すると共に、該冷却水通路の両側に対応位置
する上記ヘツドボルトボス間を連結するように該
通路上壁からリブを垂設し、且つ上記軸受孔の排
気ポート側の側方で該リブの最上位置となる部位
に、該リブを貫通する貫通穴を設けたことを特徴
とする。 That is, a bearing hole for the camshaft is provided above the cylinder bore when viewed in the camshaft axis direction on the top surface of the cylinder head, a cooling water passage is provided along the back side of the bottom surface of the cylinder head, and a cylinder head is provided on both sides of the bearing hole. In a cylinder head of an overhead camshaft engine, each of which is provided with a head bolt boss having an insertion hole for a fastening head bolt, the upper wall of the cooling water passage is set so that the exhaust port side is higher than the intake port side, A rib is provided vertically from the upper wall of the passage so as to connect the head bolt bosses located on both sides of the cooling water passage, and the uppermost position of the rib is on the side of the exhaust port side of the bearing hole. A feature is that a through hole passing through the rib is provided at the portion.
このような構成によれば、上記軸受孔の両側の
ヘツドボルトボス間を連結するリブは、冷却水通
路内において軸受孔の直下方に位置することにな
る。従つて、該リブにより軸受孔周辺の剛性が向
上されて、該軸受孔の変形が防止されることにな
る。そして、冷却水通路の上壁は排気ポート側で
吸気ポート側より高くされているので、その通路
断面積が排気ポート側の側部で大きくなつて、該
側部を多量の冷却水が流れることになり、また、
上記リブには排気ポート側の最上位置に貫通穴が
設けられているので、冷却水の流れが妨げられる
ことがなくなると共に、冷却水に空気が混入して
いる場合にも、該空気がリブの垂設部に滞留する
ことがなく、上記貫通穴を通つて冷却水と共に外
部に流出することになる。 According to such a configuration, the rib connecting the head bolt bosses on both sides of the bearing hole is located directly below the bearing hole in the cooling water passage. Therefore, the ribs improve the rigidity around the bearing hole and prevent the bearing hole from deforming. Since the upper wall of the cooling water passage is higher on the exhaust port side than on the intake port side, the cross-sectional area of the passage becomes larger on the side on the exhaust port side, and a large amount of cooling water flows through that side. becomes, and also,
Since the above rib has a through hole at the top position on the exhaust port side, the flow of cooling water will not be obstructed, and even if air is mixed in the cooling water, the air will pass through the rib. The water does not stay in the vertical portion, and flows out together with the cooling water through the through hole.
（発明の効果）
上記の構成によれば、オーバーヘツドカムシヤ
フト式エンジンのシリンダヘツドにおいて、アツ
パデツキの上方に設けられたカムシヤフトの軸受
孔周辺の剛性が向上されるので、ヘツドボルトの
締め付け等による該軸受孔の変形が防止されると
共に、該シリンダヘツドにおける特に高温となる
排気ポート側の側部が効果的に冷却され、また冷
却水通路内に空気が滞留したり冷却水の流れが妨
げられたりすることがなくなり、もつてこれらの
不具合による熱交換効率の悪化が防止され、シリ
ンダヘツドに対する所要の冷却性能が確保される
ことになる。(Effects of the Invention) According to the above configuration, in the cylinder head of an overhead camshaft type engine, the rigidity around the bearing hole of the camshaft provided above the top deck is improved, so that the bearing can be fixed by tightening the head bolt, etc. This prevents deformation of the holes, effectively cools the side of the cylinder head that is particularly hot on the exhaust port side, and prevents air from stagnation in the cooling water passage and the flow of cooling water from being obstructed. This prevents deterioration of heat exchange efficiency due to these defects, and ensures the required cooling performance for the cylinder head.
（実施例）
以下、本発明を図面に示す実施例に基いて説明
する。(Example) The present invention will be described below based on an example shown in the drawings.
第１，２図に示すように、シリンダブロツクＡ
の上面にガスケツトＢを介して設置されて列状に
並ぶ複数の燃焼室Ｃ…Ｃを形成するシリンダヘツ
ド１は、上面を形成するアツパデツキ２と底面を
形成するロアデツキ３との間が中空状とされ、そ
の中空部がシリンダ列方向に延びるウオータージ
ヤケツト４とされていると共に、該ジヤケツト４
に上記シリンダブロツクＡにおけるウオータージ
ヤケツトＤから冷却水導入口５…５を経て冷却水
が導入されるようになつている。ここで、上記ア
ツパデツキ２は、ウオータージヤケツト４の上壁
が排気ポート側（第１図の左側）で吸気ポート側
より高くなるように設けられている。また、該シ
リンダヘツド１におけるロアデツキ３の下面には
上記各燃焼室Ｃ…Ｃの上面を形成する凹部６…６
が形成されている。 As shown in Figures 1 and 2, cylinder block A
The cylinder head 1, which is installed on the upper surface via a gasket B and forms a plurality of combustion chambers C...C arranged in a row, has a hollow space between a top deck 2 forming the top surface and a lower deck 3 forming the bottom surface. The hollow part is used as a water jacket 4 extending in the cylinder row direction, and the jacket 4
Cooling water is introduced from the water jacket D in the cylinder block A through cooling water inlet ports 5...5. Here, the above-mentioned top deck 2 is provided so that the upper wall of the water jacket 4 is higher on the exhaust port side (left side in FIG. 1) than on the intake port side. Further, on the lower surface of the lower deck 3 in the cylinder head 1, recesses 6...6 forming the upper surfaces of the combustion chambers C...C are provided.
is formed.
また、シリンダヘツド１における隣接気筒間
（及び該ヘツド１の両端部）Ｘ…Ｘには、第１図
に示すように両側に対応位置させて該シリンダヘ
ツド１をシリンダブロツクＡに固着するヘツドボ
ルトＥ…Ｅの挿通孔７…７が上下方向に穿設され
ていると共に、該隣接気筒間Ｘ…Ｘにおけるアツ
パデツキ２の上方には軸受壁８…８が立設され、
各軸受壁８…８に、カムシヤフト（図示せず）の
軸方向に見てシリンダボアの上方となる位置に同
芯状に軸受孔９…９が設けられている。ここで、
これらの軸受孔９…９はカムシヤフトのジヤーナ
ル部が嵌合される真円形とされている。 In addition, between adjacent cylinders (and both ends of the head 1) X... ...E insertion holes 7...7 are bored in the vertical direction, and bearing walls 8...8 are erected above the top decks 2 between the adjacent cylinders X...X,
Each bearing wall 8...8 is provided with a concentric bearing hole 9...9 at a position above the cylinder bore when viewed in the axial direction of a camshaft (not shown). here,
These bearing holes 9...9 have a perfect circular shape into which the journal portion of the camshaft is fitted.
然して、このシリンダヘツド１においては、上
記の構成に加えて、ウオータージヤケツト４内に
おける隣接気筒間Ｘ…Ｘに、両側に対応位置する
上記ヘツドボルト挿通孔７…７のボス１０…１０
間を連結するように、アツパデツキ２の下面から
リブ１１…１１が垂設されている。そして、これ
ら各リブ１１…１１の排気ポート側の側部におけ
る最上位置には、上記軸受孔９…９の下部側方に
位置するように該リブ１１…１１をシリンダ列方
向に貫通する貫通穴１２…１２が夫々設けられて
いる。 In addition to the above-mentioned configuration, this cylinder head 1 has bosses 10...10 of the head bolt insertion holes 7...7 located on both sides between adjacent cylinders X...X in the water jacket 4.
Ribs 11...11 are vertically provided from the lower surface of the top deck 2 so as to connect between the two. At the uppermost position on the side of each of these ribs 11...11 on the exhaust port side, there is a through hole that passes through the ribs 11...11 in the cylinder row direction so as to be located on the lower side of the bearing holes 9...9. 12...12 are provided, respectively.
尚、この実施例は１気筒について吸気弁が２
個、排気弁が１個備えられる３弁式エンジンのシ
リンダヘツドに関するもので、第３図に示すよう
に該シリンダヘツド１におけるアツパデツキ２の
上面には、各気筒毎に、一方の側部に吸気弁のバ
ルブスプリングを受ける２個のシート部１３，１
３が設けられ、他方の側部に排気弁のバルブスプ
リングを受ける１個のシート部１４が設けられて
いる。 Note that in this embodiment, there are two intake valves for one cylinder.
This relates to the cylinder head of a three-valve engine equipped with one exhaust valve.As shown in FIG. Two seat parts 13, 1 that receive the valve spring of the valve
3, and one seat portion 14 for receiving a valve spring of an exhaust valve is provided on the other side.
上記の構成によれば、上方にカムシヤフトが配
置されるオーバーヘツドカムシヤフト式エンジン
のシリンダヘツド１において、アツパデツキ２の
下面における隣接気筒間Ｘ…Ｘ即ち上記カムシヤ
フトの軸受孔９…９の真下部に両側に対応位置す
るヘツドボルトボス１０…１０を連結するように
リブ１１…１１が垂設されていることにより、上
記各軸受孔９…９の周辺の剛性が向上することに
なる。これにより、ヘツドボルトＥ…Ｅの締め付
けによる応力や燃焼熱による熱膨張、或はカムシ
ヤフトからの力によつて、各軸受孔９…９が変形
することが防止される。 According to the above configuration, in the cylinder head 1 of an overhead camshaft engine in which the camshaft is disposed above, the cylinder head 1 is located between adjacent cylinders X...X on the lower surface of the top deck 2, that is, directly below the bearing holes 9... Ribs 11...11 are provided vertically to connect head bolt bosses 10...10 located correspondingly on both sides, thereby improving the rigidity around each of the bearing holes 9...9. This prevents each bearing hole 9...9 from deforming due to stress due to tightening of the head bolts E...E, thermal expansion due to combustion heat, or force from the camshaft.
一方、上記のようにアツパデツキ２の下面から
リブ１１…１１が垂設されることに伴つて、該ア
ツパデツキ２とロアデツキ３との間のウオーター
ジヤケツト４は上部が横方向に仕切られた状態と
なり、そのため冷却水の流れが妨げられたり、該
ジヤケツト４内に流れる冷却水に空気が混入して
いる場合に、この空気Ｚが第２図に示すように冷
却水のＹ方向の流れに対してリブ１１の上流側に
滞留することになる。しかし、上記ウオータージ
ヤケツト４の上壁は排気ポート側が高くされて、
該ポート側の側部における各リブ１１…１１の最
上位置には貫通穴１２…１２が設けられているの
で、上記空気Ｚは該貫通穴１２…１２を順次通つ
て下流側に流れ、最終的にはシリンダヘツド１の
外部に流出することになる。これにより、上記リ
ブ１１…１１の存在にも拘らず、空気がウオータ
ージヤケツト４内に滞留することによる熱交換効
率の悪化が防止されると共に、冷却水も貫通穴１
２…１２を通つて良好に流れることになり、シリ
ンダヘツド１は該ジヤケツト４内を流れる冷却水
によつて十分に冷却されることになる。そして、
上記のようにウオータージヤケツト４の上壁が排
気ポート側で吸気ポート側より高くされているの
で、排気ガスの熱により特に高温となるシリンダ
ヘツド１の排気ポート側の側部が効果的に冷却さ
れ、このようにしてシリンダヘツド１に対する良
好な冷却性が得られることになる。 On the other hand, as the ribs 11...11 are vertically provided from the lower surface of the upper deck 2 as described above, the water jacket 4 between the upper deck 2 and the lower deck 3 is partitioned in the upper part in the horizontal direction. Therefore, if the flow of cooling water is obstructed or if air is mixed in the cooling water flowing into the jacket 4, this air Z will interfere with the flow of cooling water in the Y direction as shown in FIG. It will stay on the upstream side of the rib 11. However, the upper wall of the water jacket 4 is made higher on the exhaust port side.
Since through-holes 12...12 are provided at the uppermost positions of the ribs 11...11 on the side of the port, the air Z passes sequentially through the through-holes 12...12, flows downstream, and finally In this case, it flows out of the cylinder head 1. As a result, despite the presence of the ribs 11 .
2...12, and the cylinder head 1 is sufficiently cooled by the cooling water flowing through the jacket 4. and,
As mentioned above, since the upper wall of the water jacket 4 is higher on the exhaust port side than on the intake port side, the side of the cylinder head 1 on the exhaust port side, which gets particularly high in temperature due to the heat of exhaust gas, is effectively cooled. In this way, good cooling performance for the cylinder head 1 can be obtained.
第１〜３図は本発明の実施例を示すもので、第
１図はシリンダヘツドの縦断正面図、第２図は第
１図−線（一部−′線）で切断した同縦
断側面図、第３図は同平面図である。
１……シリンダヘツド、２……上面（アツパデ
ツキ）、３……下面（ロアデツキ）、４……冷却水
通路（ウオータージヤケツト）、９……カムシヤ
フトの軸受孔、１０……ヘツドボルトボス、１１
……リブ、１２……貫通穴。
1 to 3 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional front view of the cylinder head, and FIG. , FIG. 3 is a plan view of the same. 1...Cylinder head, 2...Top surface (top deck), 3...Bottom surface (lower deck), 4...Cooling water passage (water jacket), 9...Camshaft bearing hole, 10...Head bolt boss, 11
...Rib, 12...Through hole.
Claims (1)
方向に見てシリンダボアの上方位置に該カムシヤ
フトの軸受孔が設けられ、且つ該シリンダヘツド
下面の裏側に沿つて冷却水通路が、また上記軸受
孔の両側にシリンダヘツド締結用ヘツドボルトの
挿入孔を有するヘツドボルトボスがそれぞれ設け
られたオーバーヘツドカムシヤフト式エンジンの
シリンダヘツド構造において、上記冷却水通路の
上壁を排気ポート側が吸気ポート側より高くなる
ように設定すると共に、該冷却水通路の両側に対
応位置する上記ヘツドボルトボス間を連結するよ
うに該通路上壁からリブを垂設し、且つ上記軸受
孔の排気ポート側の側方で該リブの最上位置とな
る部位に、該リブを貫通する貫通穴を設けたこと
を特徴とするエンジンのシリンダヘツド構造。1. A bearing hole for the camshaft is provided above the cylinder bore when viewed in the axial direction of the camshaft on the upper surface of the cylinder head, and a cooling water passage is provided along the back side of the lower surface of the cylinder head, and the cylinder head is fastened to both sides of the bearing hole. In the cylinder head structure of an overhead camshaft engine in which head bolt bosses each having an insertion hole for a head bolt are provided, the upper wall of the cooling water passage is set so that the exhaust port side is higher than the intake port side, A rib is provided vertically from the upper wall of the passage so as to connect the head bolt bosses located on both sides of the cooling water passage, and the uppermost position of the rib is on the side of the exhaust port side of the bearing hole. A cylinder head structure for an engine, characterized in that a through hole passing through the rib is provided at a portion thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27033384A JPS61149551A (en) | 1984-12-20 | 1984-12-20 | Cylinder head structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27033384A JPS61149551A (en) | 1984-12-20 | 1984-12-20 | Cylinder head structure of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61149551A JPS61149551A (en) | 1986-07-08 |
| JPH0214541B2 true JPH0214541B2 (en) | 1990-04-09 |
Family
ID=17484793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27033384A Granted JPS61149551A (en) | 1984-12-20 | 1984-12-20 | Cylinder head structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149551A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6319051U (en) * | 1986-07-21 | 1988-02-08 | ||
| JPH08509Y2 (en) * | 1987-03-16 | 1996-01-10 | マツダ株式会社 | Engine cylinder head structure |
| DE102004040227A1 (en) * | 2004-08-18 | 2006-02-23 | Bayerische Motoren Werke Ag | Cylinder head for a water-cooled multi-cylinder internal combustion engine |
| JP5049874B2 (en) * | 2008-05-21 | 2012-10-17 | 本田技研工業株式会社 | Cylinder head structure in engine |
| AT514087B1 (en) | 2013-07-04 | 2014-10-15 | Avl List Gmbh | Cylinder head for an internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148647A (en) * | 1980-04-22 | 1981-11-18 | Nissan Motor Co Ltd | Cooling water jacket of internal combustion engine cylinder head |
-
1984
- 1984-12-20 JP JP27033384A patent/JPS61149551A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148647A (en) * | 1980-04-22 | 1981-11-18 | Nissan Motor Co Ltd | Cooling water jacket of internal combustion engine cylinder head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61149551A (en) | 1986-07-08 |
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