JPH0141876Y2 - - Google Patents
Info
- Publication number
- JPH0141876Y2 JPH0141876Y2 JP1983004964U JP496483U JPH0141876Y2 JP H0141876 Y2 JPH0141876 Y2 JP H0141876Y2 JP 1983004964 U JP1983004964 U JP 1983004964U JP 496483 U JP496483 U JP 496483U JP H0141876 Y2 JPH0141876 Y2 JP H0141876Y2
- Authority
- JP
- Japan
- Prior art keywords
- liner
- cylinder block
- bore
- spectacle
- block body
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案はエンジンのシリンダブロツクに関する
ものである。[Detailed Description of the Invention] The present invention relates to a cylinder block for an engine.
従来、エンジンの小型、軽量化を目指してシリ
ンダブロツク本体としてアルミニウム系合金を使
用し、ピストンが摺動するライナは湿式として鉄
系材料を使用してシリンダブロツクを製作するこ
とが試みられている。ところで、シリンダブロツ
ク本体のアルミ化は、軽・小型エンジンであれ
ば、ライナの大きさに対してその容量、重量を大
きくとることができるので、剛性上の問題は少な
いが、この関係を４また６気筒エンジンにサイズ
アツプした場合、ライナと相対にシリンダブロツ
ク本体の容積、重量が過大となり、エンジンの大
型化が避けられないようになる。このため、リブ
を設けて剛性を高め、全体を薄肉とする対策もあ
るが、アルミニウムは基本的に引張強度が鉄の約
１／３と小さく、実用上の問題を生じ、かつまた鋳
造法案も難しくなるという問題がある。 Conventionally, attempts have been made to fabricate a cylinder block by using an aluminum alloy for the cylinder block body and using a wet iron material for the liner on which the piston slides, with the aim of making the engine smaller and lighter. By the way, if the cylinder block body is made of aluminum, if it is a light or small engine, the capacity and weight can be increased relative to the size of the liner, so there are few problems in terms of rigidity, but if this relationship is When the size of the engine is increased to a 6-cylinder engine, the volume and weight of the cylinder block body relative to the liner become excessive, making it inevitable that the engine will become larger. For this reason, there are measures to increase the rigidity by providing ribs and to make the whole wall thinner, but aluminum basically has a low tensile strength of about 1/3 of iron, which causes practical problems, and there are also no casting plans. The problem is that it becomes difficult.
さらに述べると、アルムニウムは鉄の約２倍の
熱膨張係数を有し、熱変化、温度差により異種金
属との間で結合上の問題が生じる。シリンダブロ
ツク本体が厚肉であれば、圧縮残留応力状態の締
結もとりうるが、薄肉となると撓みを生じるの
で、技術的に困難性が大となる。鉄とアルミニウ
ムとの溶接は不可ではないが、量産技術上の困難
性があり、また、鉄をアルミニウムで鋳ぐるむ場
合は、生産性が悪化することとなり、総じてアル
ミニウム系のシリンダブロツク本体と鉄系の湿式
ライナとの結合には多くの問題点がある。 More specifically, aluminum has a coefficient of thermal expansion approximately twice that of iron, and thermal changes and temperature differences cause bonding problems with different metals. If the cylinder block body is thick, it is possible to fasten the cylinder block in a compressive residual stress state, but if the cylinder block body is thin, it will bend, which will be technically difficult. Although welding iron and aluminum is not impossible, it is difficult in terms of mass production technology, and when iron is cast with aluminum, productivity deteriorates, and generally speaking, welding between aluminum cylinder block bodies and iron Coupling systems with wet liners presents a number of problems.
本考案は上記した問題点に鑑みてなされたもの
であり、簡単な構造で軽量化および量産性の向上
が果たせると共に、アルミニウム系シリンダブロ
ツク本体と鉄系ライナとの結合および剛性上の問
題を解決し、さらにはシリンダ間隔を極小として
大幅な小型化も果たせるシリンダブロツクを提供
することを目的とするものである。 The present invention was developed in view of the above-mentioned problems, and has a simple structure that reduces weight and improves mass productivity. It also solves problems related to the connection and rigidity of the aluminum cylinder block body and iron liner. Furthermore, it is an object of the present invention to provide a cylinder block that can be significantly downsized by minimizing the cylinder spacing.
このため、本考案のシリンダブロツクの構成
は、アルミニウム系シリンダブロツク本体のボア
に鉄系のライナを収容し、該ライナの周囲にウオ
ータジヤケツトを形成したシリンダブロツクにお
いて、前記ライナを、複数のライナ単体と該ライ
ナ単体の軸方向の中央部を一体に連結して該ライ
ナ単体を眼鏡状に連設する眼鏡状連設部とから形
成し、前記各ライナ単体を前記シリンダブロツク
本体のボアの底部に設けた嵌合部に嵌合固定し、
前記ボアの上部を前記ライナの連設部の挿通を許
容する形状および大きさに形成し、しかもシリン
ダヘツドの凹所に収容した金属製中空Ｏリングを
前記各ライナ単体の上端に衝接させたことを特徴
としている。 Therefore, the configuration of the cylinder block of the present invention is such that an iron liner is housed in the bore of an aluminum cylinder block body, and a water jacket is formed around the liner. The liner unit is formed of a single liner unit and a spectacle-like connecting portion that connects the axial center portion of the liner unit unit and connects the liner unit unit in a spectacle-like manner, and each liner unit is connected to the bottom of the bore of the cylinder block body. Fit and fix in the fitting part provided in the
The upper part of the bore is formed in a shape and size that allows the continuous portion of the liner to pass therethrough, and a hollow metal O-ring housed in a recess in the cylinder head is brought into contact with the upper end of each individual liner. It is characterized by
以下、本考案の一実施例を添付図面に基いて説
明する。 An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図ないし第３図において、１はアルミニウ
ム合金製のシリンダブロツク本体、２は鉄合金製
の眼鏡状ライナであり、ライナ２はシリンダブロ
ツク本体１のボア３内に収容され、その周囲には
ウオータジヤケツト４が形成されている。ライナ
２は、複数（こゝでは、４個）のライナ単体２ａ
とライナ単体２ａの軸方向の中央部を一体に連結
して該ライナ単体２ａを眼鏡状に連設する眼鏡状
連設部２ｂとから成つている。このライナ２は、
例えば球状黒鉛鋳鉄を用いて一体鋳造され、その
剛性は、眼鏡状連設部２ａによつて保証される。
なお、眼鏡状連設部２ｂの上下方向の幅は、ライ
ナ単体２ａの長さの1/3程度とするのが望ましい。 In Figs. 1 to 3, 1 is a cylinder block body made of aluminum alloy, and 2 is a spectacle-shaped liner made of iron alloy. A water jacket 4 is formed. The liner 2 is a plurality of (in this case, four) single liners 2a.
and a spectacle-like connecting portion 2b which integrally connects the axial center portion of the single liner body 2a and connects the single liner body 2a in a spectacle-like manner. This liner 2 is
For example, it is integrally cast using spheroidal graphite cast iron, and its rigidity is guaranteed by the spectacle-shaped connecting portion 2a.
Note that it is desirable that the vertical width of the spectacle-shaped connecting portion 2b be approximately 1/3 of the length of the liner unit 2a.
シリンダブロツク本体１のボア３は、その底部
にライナ単体２ａの外径よりもわずか大径の円筒
部６と該円筒部６から半径内方へ突出する段差部
５とを設けている。ライナ２は、そのライナ単体
２ａを前記円筒部６に対して樹脂弾性体７を介し
て圧入させると共に、そのライナ単体２ａの下端
を前記段差部５に着座させて、該ボア３の底部に
支持されている。樹脂弾性体７は、例えば熱可塑
性樹脂エラストマから成り、ウオータジヤケツト
４をライナ２の底部に対して水密に維持する。こ
の樹脂弾性体７は、予めライナ単体２ａに接着剤
により接合しておいても良い。 The bore 3 of the cylinder block body 1 is provided at its bottom with a cylindrical portion 6 having a diameter slightly larger than the outer diameter of the liner unit 2a and a stepped portion 5 projecting radially inward from the cylindrical portion 6. The liner 2 is supported at the bottom of the bore 3 by press-fitting the liner unit 2a into the cylindrical portion 6 via the resin elastic body 7, and seating the lower end of the liner unit 2a on the stepped portion 5. has been done. The resin elastic body 7 is made of, for example, a thermoplastic resin elastomer, and maintains the water jacket 4 watertight with respect to the bottom of the liner 2. This resin elastic body 7 may be bonded to the liner unit 2a in advance with an adhesive.
一方、ボア３の上部は、ライナ２の上方からの
組付けを可能にすべく眼鏡状導入部３ａとされて
いる。この眼鏡状導入部３ａは、ライナ２の最大
径部である眼鏡状連設部２ｂを円滑に通過させる
ことができるように、該連設部２ａよりも若干大
きく形成されている。このため、シリンダブロツ
ク本体１内にライナ２を収容した状態では、前記
眼鏡状導入部３ａの内面とライナ単体２ａとの間
に所定の隙が形成されるようになる（第１図）。
そこで、本考案では、シリンダヘツド９にライナ
単体２ａに対応して複数の凹所１０を設け、各凹
所１０に金属製の薄肉中空Ｏリング８を嵌着して
おく。この中空Ｏリング８は、シリンダブロツク
本体１にガスケツト１１を介してシリンダヘツド
９を合わせた際、ライナ単体２ａの上端面に当接
して弾性変形し、前記隙を閉じてウオータジヤケ
ツト４をライナ２の上部に対して水密に維持す
る。 On the other hand, the upper part of the bore 3 is formed into a spectacle-shaped introduction part 3a to enable the liner 2 to be assembled from above. This spectacle-shaped introduction part 3a is formed slightly larger than the continuous part 2a so that it can smoothly pass through the continuous part 2b, which is the largest diameter part of the liner 2. Therefore, when the liner 2 is accommodated in the cylinder block main body 1, a predetermined gap is formed between the inner surface of the spectacle-shaped introduction part 3a and the liner unit 2a (FIG. 1).
Therefore, in the present invention, a plurality of recesses 10 are provided in the cylinder head 9 corresponding to the liner unit 2a, and a thin metal hollow O-ring 8 is fitted into each recess 10. When the cylinder head 9 is fitted to the cylinder block body 1 via the gasket 11, the hollow O-ring 8 comes into contact with the upper end surface of the liner unit 2a and is elastically deformed, closing the gap and attaching the water jacket 4 to the liner. Keep it watertight against the top of 2.
上記シリンダブロツクを組立てるには、先ずラ
イナ単体２ａと眼鏡状連設部２ｂとを一体に有す
るライナ２を導入部３ａからボア３内に挿入し、
その下端部を樹脂弾性体７を介してボア３の底部
の筒状部６に圧入しかつその下端を段差部５に着
座させる。次に予め中空Ｏリング８を凹所１０内
に納めたシリンダヘツド９をガスケツト１１を介
してシリンダブロツク本体１に重ね、両者を一体
化する。この時、中空Ｏリング８はライナ単体２
ａの端面に当接して弾性変形し、これによつてウ
オータジヤケツト４の水密性が維持される。 To assemble the above-mentioned cylinder block, first, the liner 2, which integrally includes the liner unit 2a and the spectacle-like connecting portion 2b, is inserted into the bore 3 from the introduction portion 3a, and
Its lower end is press-fitted into the cylindrical part 6 at the bottom of the bore 3 via the resin elastic body 7, and its lower end is seated on the stepped part 5. Next, the cylinder head 9, in which the hollow O-ring 8 has been previously housed in the recess 10, is stacked on the cylinder block body 1 via the gasket 11, and the two are integrated. At this time, the hollow O-ring 8 is
The water jacket 4 is elastically deformed by contacting the end face of the water jacket 4, thereby maintaining the watertightness of the water jacket 4.
しかして、上記構成のシリンダブロツクにおい
ては、眼鏡状連設部２ｂによつてライナ１の剛性
が維持されるので、ライナ単体２ａの可及的薄肉
化が可能になる。換言すれば、ライナ単体２ａを
薄肉にできる分、ボア間ピツチは小さくなり、シ
リンダブロツク本体１を剛性的に満足する程度ま
で厚肉に形成しても、エンジン全体として見れ
ば、それ程大型にならなくて済む。しかも、ライ
ナ単体２ａの薄肉の故に、冷却性能も高まる。ま
たボア３の底部のみでライナ２を嵌合固定し、ラ
イナ２の上端はシリンダヘツド９に装着した中空
Ｏリング８で押えるようにしているので、眼鏡状
ライナの組付けは簡単となり、かつシリンダブロ
ツク本体１とライナ２との結合も強固となる。特
に、金属製中空Ｏリング８は、その弾性変形によ
りシリンダブロツク本体１とライナ２との熱膨張
差も吸収するので、両者の結合はより安定する。 In the cylinder block having the above structure, the rigidity of the liner 1 is maintained by the spectacle-like connecting portion 2b, so that the liner 2a can be made as thin as possible. In other words, as the liner unit 2a can be made thinner, the pitch between the bores becomes smaller, and even if the cylinder block body 1 is made thick enough to satisfy the rigidity, the engine as a whole will not be that large. You don't have to do it. Moreover, since the liner unit 2a is thin, the cooling performance is also improved. In addition, the liner 2 is fitted and fixed only at the bottom of the bore 3, and the upper end of the liner 2 is held down by the hollow O-ring 8 attached to the cylinder head 9, making it easy to assemble the spectacle-shaped liner and The connection between the block body 1 and the liner 2 is also strengthened. In particular, the metallic hollow O-ring 8 also absorbs the difference in thermal expansion between the cylinder block body 1 and the liner 2 due to its elastic deformation, so that the connection between the two becomes more stable.
以上、詳細に説明したように、本考案にかゝる
シリンダブロツクによれば、中央部のみを連設部
とした眼鏡状ライナの特有の構成によりボア間ピ
ツチの縮小が可能になり、アルミニウム系シリダ
ブロツク本体を用いてもエンジン全体の可及的小
型化を達成できる。また眼鏡状ライナは、その上
部分が薄肉となつて冷却性能が高まると共に、そ
の中央部が厚肉となつて強度的にも満足し、歪を
抑えて振動吸収にも効果的となる。しかもボア底
部のみの嵌合固定構造とＯリングを用いたシール
構造とにより、眼鏡状ライナの組付けは簡単とな
り、かつ異種金属同士の結合の難点も補い、総じ
てエンジンの耐久信頼性は向上する。 As explained in detail above, according to the cylinder block according to the present invention, the unique configuration of the spectacle-shaped liner in which only the central part is connected makes it possible to reduce the pitch between the bores. Even by using the cylinder block body, the entire engine can be made as compact as possible. In addition, the eyeglass-shaped liner has a thinner upper portion to improve cooling performance, and a thicker central portion to provide sufficient strength, suppress distortion, and be effective in absorbing vibrations. Moreover, the fitting and fixing structure only at the bottom of the bore and the sealing structure using an O-ring make it easy to assemble the spectacle-shaped liner, and also overcome the difficulties of joining dissimilar metals, improving the durability and reliability of the engine overall. .
第１図は本考案にかゝるシリンダブロツクの断
面図、第２図はその一部である眼鏡状ライナの断
面図、第３図は同じく眼鏡状ライナの斜視図であ
る。
１……シリンダブロツク本体、２……ライナ、
２ａ……ライナ単体、２ｂ……眼鏡状連設部、３
……ボア、３ａ……ボアの導入部、４……ウオー
タジヤケツト、５……ボアの段差部、６……ボア
の円筒部、７……樹脂弾性体、８……中空Ｏリン
グ、９……シリンダヘツド、１０……凹所。
FIG. 1 is a cross-sectional view of a cylinder block according to the present invention, FIG. 2 is a cross-sectional view of a spectacle-shaped liner that is a part of the cylinder block, and FIG. 3 is a perspective view of the spectacle-shaped liner. 1...Cylinder block body, 2...Liner,
2a... Liner alone, 2b... Spectacle-shaped connecting part, 3
...Bore, 3a...Introduction part of the bore, 4...Water jacket, 5...Stepped part of the bore, 6...Cylindrical part of the bore, 7...Resin elastic body, 8...Hollow O-ring, 9 ...Cylinder head, 10...Recess.
Claims (1)
鉄系のライナを収容し、該ライナの周囲にウオー
タジヤケツトを形成したシリンダブロツクにおい
て、前記ライナを、複数のライナ単体と該ライナ
単体の軸方向の中央部を一体に連結して該ライナ
単体を眼鏡状に連設する眼鏡状連設部とから形成
し、前記各ライナ単体を前記シリンダブロツク本
体のボアの底部に設けた嵌合部に嵌合固定し、前
記ボアの上部を前記ライナの連設部の挿通を許容
する形状および大きさに形成し、しかもシリンダ
ヘツドの凹所に収容した金属製中空Ｏリングを前
記各ライナ単体の上端に衝接させたことを特徴と
するシリンダブロツク。 In a cylinder block in which an iron-based liner is accommodated in the bore of an aluminum-based cylinder block body and a water jacket is formed around the liner, the liner is divided into a plurality of individual liners and a center portion of the single liner in the axial direction. and a spectacle-like connecting part that is integrally connected to connect the liner single bodies in a spectacle-like manner, and each of the liner single bodies is fitted and fixed to a fitting part provided at the bottom of the bore of the cylinder block main body, The upper part of the bore is formed in a shape and size that allows the continuous portion of the liner to pass therethrough, and a hollow metal O-ring housed in a recess in the cylinder head is brought into contact with the upper end of each individual liner. A cylinder block characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP496483U JPS59111944U (en) | 1983-01-18 | 1983-01-18 | cylinder block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP496483U JPS59111944U (en) | 1983-01-18 | 1983-01-18 | cylinder block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59111944U JPS59111944U (en) | 1984-07-28 |
| JPH0141876Y2 true JPH0141876Y2 (en) | 1989-12-08 |
Family
ID=30136561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP496483U Granted JPS59111944U (en) | 1983-01-18 | 1983-01-18 | cylinder block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59111944U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540361U (en) * | 1978-09-07 | 1980-03-15 | ||
| JPS6056905A (en) * | 1983-07-27 | 1985-04-02 | ストウフア−・ケミカル・カンパニ− | Synergistic composition |
| JPS6111483U (en) * | 1984-06-27 | 1986-01-23 | 日本車輌製造株式会社 | semi-trailer |
| JPS6228301A (en) * | 1985-07-18 | 1987-02-06 | 大阪機工株式会社 | Control system of operation of automatic filling line |
-
1983
- 1983-01-18 JP JP496483U patent/JPS59111944U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540361U (en) * | 1978-09-07 | 1980-03-15 | ||
| JPS6056905A (en) * | 1983-07-27 | 1985-04-02 | ストウフア−・ケミカル・カンパニ− | Synergistic composition |
| JPS6111483U (en) * | 1984-06-27 | 1986-01-23 | 日本車輌製造株式会社 | semi-trailer |
| JPS6228301A (en) * | 1985-07-18 | 1987-02-06 | 大阪機工株式会社 | Control system of operation of automatic filling line |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59111944U (en) | 1984-07-28 |
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