JPH0534374Y2 - - Google Patents
Info
- Publication number
- JPH0534374Y2 JPH0534374Y2 JP1987171454U JP17145487U JPH0534374Y2 JP H0534374 Y2 JPH0534374 Y2 JP H0534374Y2 JP 1987171454 U JP1987171454 U JP 1987171454U JP 17145487 U JP17145487 U JP 17145487U JP H0534374 Y2 JPH0534374 Y2 JP H0534374Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- metal
- gasket
- combustion chamber
- thickness
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 6
- 239000011324 bead Substances 0.000 description 6
- 230000008719 thickening Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、内燃機関のシリンダヘツドとシリン
ダブロツクとの間に配置される金属製ガスケツト
に係り、特に多気筒内燃機関に用いられる金属製
シリンダヘツドガスケツトに係る。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a metal gasket disposed between a cylinder head and a cylinder block of an internal combustion engine, and in particular to a metal cylinder head gasket used in a multi-cylinder internal combustion engine. It concerns the butt.
従来の技術
ステンレス鋼板、ばね鋼板の如き金属板により
構成された金属製シリンダヘツドガスケツトは従
来より知られており、これは、例えば実公昭61−
14606号、特開昭61−255252号の各公報に示され
ており、多気筒内燃機関用のものとしては複数個
の燃焼室開口を互いに隔置している。BACKGROUND ART Metal cylinder head gaskets made of metal plates such as stainless steel plates and spring steel plates have been known for a long time.
No. 14606 and Japanese Patent Application Laid-Open No. 61-255252, the combustion chamber openings are spaced apart from each other for multi-cylinder internal combustion engines.
考案が解決しようとする問題点
多気筒内燃機関に於けるシリンダヘツドとシリ
ンダブロツクとの締結はシリンダヘツドの外周縁
周りに互いに隔置して配置された複数個のヘツド
ボルトにより行われ、このためこのボルトの締結
力は充分に作用するシリンダヘツド外周縁領域に
於ては面圧が大きく、内側に於ては面圧が低くな
るためシリンダヘツドはシリンダブロツクに対し
弓状に反るべく変形し、これにより気筒間のガス
シール性が悪くなる。このことは金属製の、特に
単板構造のシリンダヘツドガスケツトに於て顕著
になる。Problems to be Solved by the Invention The cylinder head and cylinder block in a multi-cylinder internal combustion engine are connected by a plurality of head bolts spaced apart from each other around the outer periphery of the cylinder head. The surface pressure is large in the outer circumferential area of the cylinder head where the bolt fastening force acts sufficiently, and the surface pressure is low on the inside, so the cylinder head deforms in an arched manner relative to the cylinder block. This deteriorates gas sealing between the cylinders. This is particularly noticeable in cylinder head gaskets made of metal, especially single-plate structures.
上述の如き不具合に鑑みてシリンダヘツドガス
ケツトの燃焼室開口の周縁部に金属溶射を行つて
その部分の板厚を増大せしめることが既に考えら
れており、これは上述の特開昭61−255252号公報
に示されている。またガスケツトの互いに隣接す
る燃焼室開口間の領域に面圧調整用の板部材を配
置することが考えられており、これは実開昭58−
109542号公報に示されている。 In view of the above-mentioned problems, it has already been considered to increase the thickness of the cylinder head gasket by applying metal spraying to the peripheral edge of the combustion chamber opening. It is shown in the publication No. It has also been considered to arrange a plate member for surface pressure adjustment in the area between the adjacent combustion chamber openings of the gasket, and this
This is shown in Publication No. 109542.
また、ガスケツトの互いに隣接する燃焼室開口
間の領域にシム板を挿入して面圧の均一化を図る
ことが行われている。しかし、これに於ては、シ
ム板を適正位置に固定するよい方法がなく、また
その取付作業の不安定さから配設位置がばらつく
虞れがあり、これらのことから充分な効果を得に
くく、また前記燃焼室開口間の領域に介在すべき
シム板の板厚は一応でなく、該領域に作用する面
圧分布から周辺部で薄く、中央部で厚いことが好
ましいが、要求板厚が数十乃至数百ミクロンであ
る極薄のシム板に於て、そのような板厚変化を与
えることは困難である。 Furthermore, a shim plate is inserted in the region between adjacent combustion chamber openings of the gasket to equalize the surface pressure. However, in this case, there is no good way to fix the shim plate in the proper position, and there is a risk that the installation position may vary due to the instability of the installation process, making it difficult to obtain sufficient effects. Furthermore, the thickness of the shim plate that should be interposed in the area between the combustion chamber openings is not limited, but it is preferable that it is thinner at the periphery and thicker at the center due to the distribution of surface pressure acting on the area, but the required plate thickness is It is difficult to provide such a change in thickness to an extremely thin shim plate of several tens to hundreds of microns.
本考案は、上述の如き問題点を解決した改良さ
れた金属製シリンダヘツドガスケツトを提供する
ことを目的としている。 SUMMARY OF THE INVENTION The object of the present invention is to provide an improved metal cylinder head gasket that overcomes the above-mentioned problems.
問題点を解決するための手段
上述の如き目的は、本願考案によれば、一枚の
金属板に複数個の燃焼室開口が互いに隔置してあ
けられた多気筒内燃機関用金属製シリンダヘツド
ガスケツトに於て、互いに隣接する前記燃焼室開
口の間の鼓形領域がその周縁部より中央部へ向け
て零から始まつて漸次増大する厚みだけ金属溶射
により金属板の板厚より増厚されていることを特
徴とする多気筒内燃機関用金属製シリンダヘツド
ガスケツトによつて達成される。Means for Solving the Problems The object as described above is to provide a metal cylinder head for a multi-cylinder internal combustion engine, in which a plurality of combustion chamber openings are formed in a single metal plate spaced apart from each other. In the gasket, the drum-shaped area between the combustion chamber openings adjacent to each other is thickened from the thickness of the metal plate by metal spraying by a thickness that starts from zero and gradually increases from the periphery toward the center. This is achieved by a metal cylinder head gasket for a multi-cylinder internal combustion engine, which is characterized by:
考案の作用及び効果
上述の如き構成によれば、金属板の厚みである
シリンダヘツドガスケツト全体の厚みに比して、
得に燃焼室開口間の鼓形領域に於て厚みがその周
縁部より中央部へ向けて零から始まつて漸次増大
する厚みだけ増厚されることにより、多気筒内燃
機関のシリンダヘツドガスケツトがその外周縁部
に沿つてのみ締付けられたとき、僅かとはいえシ
リンダヘツドの弾性変形によつてガスケツト全体
の締付けに比して締付け力が低くなる燃焼室開口
間の鼓形領域に於ける締付け力が、該領域を他の
領域に比して本来の金属板の厚みより滑らかに板
厚を増大させることによる板厚の部分修正によつ
て補償され、シリンダヘツドとシリンダブロツク
の間のガスケツトを介する締付け結合が全面に亙
つてより良く均等化され、ガスシール性が向上す
る。Effects and Effects of the Invention According to the above-mentioned configuration, compared to the total thickness of the cylinder head gasket, which is the thickness of the metal plate,
In particular, the cylinder head gasket of a multi-cylinder internal combustion engine is improved by increasing the thickness starting from zero and gradually increasing from the periphery towards the center, especially in the hourglass-shaped region between the combustion chamber openings. When the gasket is tightened only along its outer periphery, the elastic deformation of the cylinder head causes a lower tightening force compared to tightening the entire gasket in the hourglass-shaped region between the combustion chamber openings. The clamping force is compensated by a partial modification of the plate thickness by increasing the thickness of the metal plate smoothly in this area relative to the other areas, and the gasket between the cylinder head and the cylinder block The tightening connection is more evenly distributed over the entire surface, and the gas sealing performance is improved.
実施例
以下に添付の図を参照して本考案を実施例につ
いて詳細に説明する。Embodiments Hereinafter, the present invention will be described in detail with reference to embodiments with reference to the accompanying drawings.
第１図乃至第３図は本考案による多気筒内燃機
関用の金属製シリンダヘツドガスケツトの一つの
実施例を示している。これらの図に於て、１０は
シリンダヘツドガスケツトを示しており、シリン
ダヘツドガスケツト１０は0.2〜0.4mm程度の厚さ
を有するステンレス鋼板或いはばね鋼板の如く適
度の弾性を備えた鋼板により構成されており、こ
れには燃焼室開口１２、冷却水通路用開口１４、
潤滑油通路用開口１６及びボルト通し孔１８が
各々設けられている。燃焼室開口１２は、図示の
実施例に於ては、四気筒内燃機関用のシリンダヘ
ツドガスケツトであることからして、四個一列に
互いに隔置して設けられている。ボルト通し孔１
８の各々には図示されていないシリンダヘツドと
シリンダブロツクとを互いに締結するためのヘツ
ドボルトが通され、これによりシリンダヘツドガ
スケツト１０はシリンダヘツドとシリンダブロツ
クとの間に挾圧されるようになる。 1 to 3 show one embodiment of a metal cylinder head gasket for a multi-cylinder internal combustion engine according to the present invention. In these figures, numeral 10 indicates a cylinder head gasket, and the cylinder head gasket 10 is made of a steel plate with appropriate elasticity such as a stainless steel plate or a spring steel plate having a thickness of about 0.2 to 0.4 mm. This includes a combustion chamber opening 12, a cooling water passage opening 14,
A lubricating oil passage opening 16 and a bolt through hole 18 are provided, respectively. In the illustrated embodiment, since the cylinder head gasket is for a four-cylinder internal combustion engine, four combustion chamber openings 12 are provided in a row and spaced apart from each other. Bolt through hole 1
A head bolt (not shown) for fastening the cylinder head and cylinder block to each other is passed through each of the cylinder head gaskets 8, so that the cylinder head gasket 10 is clamped between the cylinder head and the cylinder block. .
燃焼室開口１２の各々の周りにはこれと同心に
平面形状が円環状であつて断面形状が半円状の内
側ビード２０がプレス等により成形されている。
また各燃焼室開口１２の周りのビード２０の外側
にはこれらを連続して取囲むべく延在して断面形
状が半円状の外側ビード２１がプレス等により成
形されている。 An inner bead 20 having an annular planar shape and a semicircular cross-section is formed concentrically around each combustion chamber opening 12 by pressing or the like.
Further, on the outside of the bead 20 around each combustion chamber opening 12, an outer bead 21 having a semicircular cross-sectional shape is formed by pressing or the like so as to continuously surround the bead 20.
シリンダヘツドガスケツト１０は互いに隣接す
る燃焼室開口１２の間に鼓形領域２４を有してお
り、該領域には金属溶射による増厚層２６が設け
られている。増厚層２６はCu，Ni，Znの如き金
属粉体の金属溶射により形成されてポーラス構造
を備えている。増厚層２６は、鼓形領域２４と相
似形の鼓形をなしていてよく、また、周縁部より
中央部へ向うに従い金属溶射量を増大されて増厚
量が周縁部より中央部へ向うに従い徐々に増大し
ている。この増厚層２６の増厚量の変化は該部分
に於ける面圧分布に応じて適宜に設定されていれ
ばよい。尚、増厚層２６の増厚量は20〜150μ程
度であつてよい。 The cylinder head gasket 10 has an hourglass-shaped region 24 between adjacent combustion chamber openings 12, which region is provided with a metal sprayed thickening layer 26. The thickening layer 26 is formed by metal spraying of metal powder such as Cu, Ni, or Zn, and has a porous structure. The thickening layer 26 may have an hourglass shape similar to the hourglass-shaped region 24, and the amount of metal spraying increases from the periphery toward the center, so that the thickness increases from the periphery toward the center. It is gradually increasing. The change in the amount of increase in the thickness of the thickened layer 26 may be appropriately set depending on the surface pressure distribution in the portion. Incidentally, the amount of increase in the thickness of the thickening layer 26 may be approximately 20 to 150 microns.
上述の如く増厚層２６が設けられることによ
り、シリンダヘツド１０の板厚がこれに作用する
面圧に応じて調整されたことになり、このことか
らシリンダヘツドガスケツト１０に作用する面圧
が全体に於てほぼ均等になり、得に各気筒間に於
けるガスシール性が向上するようになる。また増
厚層２６は金属溶射によりポーラス構造になつて
いるから、これは圧縮に対し適度の柔軟性を備
え、締付により自動的にシリンダヘツドの歪みに
倣うように変形し、このことによつてもガスシー
ル性が向上するようになる。 By providing the thickening layer 26 as described above, the thickness of the cylinder head 10 is adjusted according to the surface pressure acting on it, and as a result, the surface pressure acting on the cylinder head gasket 10 is reduced. It becomes almost uniform throughout, and in particular, the gas sealing performance between each cylinder is improved. Furthermore, since the thickened layer 26 has a porous structure formed by metal spraying, it has appropriate flexibility against compression, and when tightened, it automatically deforms to follow the distortion of the cylinder head. The gas sealing property will be improved even if it is heated.
以上に於ては、本考案を特定の実施例について
詳細に説明したが、本考案はこれに限定されるも
のではなく、本考案の範囲内にて種々の実施例が
可能であることは当業者にとつて明らかであろ
う。 Although the present invention has been described above in detail with reference to specific embodiments, it is understood that the present invention is not limited to this and that various embodiments are possible within the scope of the present invention. This will be obvious to businesses.
第１図は本考案による多気筒内燃機関用シリン
ダヘツドガスケツトの一つの実施例を示す平面
図、第２図は第１図の線−に沿う拡大断面
図、第３図は第１図の線−に沿う拡大断面図
である。
１０……シリンダヘツドガスケツト、１２……
燃焼室開口、１４……冷却水通路用開口、１６…
…潤滑油通路用開口、１８……ボルト通し孔、２
０……内側ビード、２２……外側ビード、２４…
…鼓形領域、２６……増厚層。
FIG. 1 is a plan view showing one embodiment of the cylinder head gasket for a multi-cylinder internal combustion engine according to the present invention, FIG. 2 is an enlarged sectional view taken along the line - in FIG. 1, and FIG. It is an enlarged sectional view along line -. 10... Cylinder head gasket, 12...
Combustion chamber opening, 14...Cooling water passage opening, 16...
...Lubricating oil passage opening, 18...Bolt through hole, 2
0...Inner bead, 22...Outer bead, 24...
...Trumpet-shaped area, 26...Thickened layer.
Claims (1)
置してあけられた多気筒内燃機関用金属製シリン
ダヘツドガスケツトに於て、互いに隣接する前記
燃焼室開口の間の鼓形領域がその周縁部より中央
部へ向けて零から始まつて漸次増大する厚みだけ
金属溶射により金属板の板厚より増厚されている
ことを特徴とする多気筒内燃機関用金属製シリン
ダヘツドガスケツト。 In a metal cylinder head gasket for a multi-cylinder internal combustion engine in which a plurality of combustion chamber openings are spaced apart from each other in a single metal plate, an hourglass-shaped region between the adjacent combustion chamber openings is formed. A metal cylinder head gasket for a multi-cylinder internal combustion engine, characterized in that the gasket is made thicker than a metal plate by metal spraying by a thickness that starts from zero and gradually increases from the periphery toward the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171454U JPH0534374Y2 (en) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171454U JPH0534374Y2 (en) | 1987-11-10 | 1987-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0176544U JPH0176544U (en) | 1989-05-24 |
| JPH0534374Y2 true JPH0534374Y2 (en) | 1993-08-31 |
Family
ID=31463299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171454U Expired - Lifetime JPH0534374Y2 (en) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0534374Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5640646B2 (en) * | 2010-10-26 | 2014-12-17 | 日本ガスケット株式会社 | Cylinder head gasket |
| US10077840B2 (en) | 2015-09-25 | 2018-09-18 | Federal-Mogul Llc | Static gasket and method of construction thereof |
| DE102019203454B3 (en) * | 2019-03-14 | 2020-07-09 | Eagleburgmann Germany Gmbh & Co. Kg | Marine mechanical seal assembly |
-
1987
- 1987-11-10 JP JP1987171454U patent/JPH0534374Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0176544U (en) | 1989-05-24 |
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