JPH0146702B2 - - Google Patents
Info
- Publication number
- JPH0146702B2 JPH0146702B2 JP26389384A JP26389384A JPH0146702B2 JP H0146702 B2 JPH0146702 B2 JP H0146702B2 JP 26389384 A JP26389384 A JP 26389384A JP 26389384 A JP26389384 A JP 26389384A JP H0146702 B2 JPH0146702 B2 JP H0146702B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- thin
- walled
- sleeve
- siamese
- 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
- 239000002131 composite material Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1816—Number of cylinders four
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)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【発明の詳細な説明】
Ａ 発明の目的
(1) 産業上の利用分野
本発明はサイアミーズ型シリンダブロツク、特
にシリンダブロツク外壁と、複数のシリンダバベ
ルを結合したサイアミーズシリンダバレルとの間
に該サイアミーズシリンダバレルの外周が臨む水
ジヤケツトを設け、各シリンダバレルにはスリー
ブが鋳ぐるまれているものの改良に関する。Detailed Description of the Invention A. Object of the Invention (1) Industrial Field of Application The present invention relates to a Siamese type cylinder block, in particular, to a Siamese cylinder block between the outer wall of the cylinder block and a Siamese cylinder barrel in which a plurality of cylinder bells are connected. This invention relates to an improvement in which a water jacket is provided facing the outer periphery of the barrel, and a sleeve is cast into each cylinder barrel.
(2) 従来の技術
従来、この種シリンダブロツクにおいては内燃
機関の小型軽量化を図るため、相隣るシリンダバ
レルを極力接近させており、また機関の高出力化
に対応するため厚肉のスリーブが用いられてい
る。(2) Conventional technology Conventionally, in this type of cylinder block, adjacent cylinder barrels were placed as close as possible in order to reduce the size and weight of the internal combustion engine, and thick sleeves were used to accommodate the high output of the engine. is used.
(3) 発明が解決しようとする問題点
しかしながら前記のように構成すると、シリン
ダバレル相互の結合部の肉厚が薄くなつてしまう
ためそこに水ジヤケツトに連通する水路を設ける
ことができなくなる。(3) Problems to be Solved by the Invention However, with the above structure, the wall thickness of the joint between the cylinder barrels becomes thin, making it impossible to provide a waterway communicating with the water jacket there.
そのため各シリンダバレルをその外周から冷却
することができず、特に機関運転中高温となるシ
リンダヘツド側の端部から所定の範囲ではスリー
ブの円周回りにおける熱膨脹量が不均一となり、
スリーブが変形してピストンとの摺動により偏摩
耗するといつた問題がある。 As a result, each cylinder barrel cannot be cooled from its outer periphery, and the amount of thermal expansion around the circumference of the sleeve becomes uneven, especially in a predetermined range from the end on the cylinder head side, which is at high temperature during engine operation.
There is a problem in that the sleeve deforms and wears unevenly due to sliding with the piston.
本発明は上記に鑑み、内燃機関の小型軽量化お
よび高出力化に対応し得ると共にスリーブの円周
回りにおける熱膨脹量を略均一にし得るようにし
た前記シリンダブロツクを提供することを目的と
する。 In view of the above, it is an object of the present invention to provide a cylinder block that is capable of responding to miniaturization, weight reduction, and high output of internal combustion engines, and is capable of making the amount of thermal expansion approximately uniform around the circumference of the sleeve.
Ｂ 発明の構成
(1) 問題点を解決するための手段
本発明は、前記スリーブを、シリンダヘツド側
の部分に所定の長さの薄肉筒部を有する円筒状鋳
造体と、前記薄肉筒部に被着される円筒状剛性体
とより構成し、前記鋳造体の前記薄肉筒部と剛性
体とよりなる複合部の肉厚を該鋳造体の厚肉筒部
の肉厚よりも薄く設定し、相隣る前記シリンダバ
レルの結合部に、前記複合部間に位置し且つ前記
水ジヤケツトに連通する水路を設けたことを特徴
とする。B. Arrangement of the Invention (1) Means for Solving Problems The present invention provides the sleeve with a cylindrical cast body having a thin-walled cylindrical portion of a predetermined length on the cylinder head side, and a cylindrical cast body having a thin-walled cylindrical portion with a predetermined length on the cylinder head side. and a cylindrical rigid body to be adhered, and the thickness of the composite part consisting of the thin-walled cylindrical part and the rigid body of the cast body is set to be thinner than the wall thickness of the thick-walled cylindrical part of the cast body, The water jacket is characterized in that a water channel is provided at the connecting portion of the adjacent cylinder barrels, and is located between the composite portions and communicates with the water jacket.
(2) 作 用
スリーブにおける鋳造体の薄肉筒部とそれに被
着された剛性体は、機関の高出力化に十分に対応
し得る複合部を構成する。(2) Function The thin-walled cylindrical part of the cast body in the sleeve and the rigid body attached to it constitute a composite part that can sufficiently cope with the high output of the engine.
また相隣るシリンダバレルの結合部に水路を設
けることにより、各シリンダバレルが外周から冷
却されるのでスリーブの円周回りにおける熱膨脹
量が略均一となる。 Further, by providing a water channel at the joining portion of adjacent cylinder barrels, each cylinder barrel is cooled from the outer periphery, so that the amount of thermal expansion around the circumference of the sleeve becomes substantially uniform.
(3) 実施例
第１〜第４図において、サイアミーズ型シリン
ダブロツク１は直列に並ぶ複数のシリンダバレル
２1〜２4相互を結合したサイアミーズシリンダバ
レル２と、そのサイアミーズシリンダバレル２を
囲繞するシリンダブロツク外壁３とを備え、両者
２，３間にはサイアミーズシリンダバレル２の外
周が臨む水ジヤケツト４が設けられる。各シリン
ダバレル２1〜２4にスリーブ５が鋳ぐるまれてい
る。(3) Embodiment In FIGS. 1 to 4, a Siamese cylinder block 1 includes a plurality of cylinder barrels 2 1 to 2 4 arranged in series, a Siamese cylinder barrel 2 connected to each other, and a cylinder surrounding the Siamese cylinder barrel 2. A water jacket 4 is provided between both blocks 2 and 3, and the outer periphery of the Siamese cylinder barrel 2 is exposed to the water jacket 4. A sleeve 5 is cast into each cylinder barrel 2 1 to 2 4 .
第４図に明示するようにスリーブ５は、シリン
ダヘツド側の端部より所定の長さに亘つて薄肉筒
部６ａを有する円筒状鋳造体６と、その薄肉筒部
６ａに被着された円筒状剛性体７とよりなる。こ
こで所定の長さとは、例えばピストンヘツド部の
ストロークに対応する範囲である。鋳造体６は鋳
鉄、鋳鋼等より構成される。また円筒状剛性体７
は薄肉筒部６ａに高張力線材であるピアノ線ｗを
相隣るもの相互が密着するように所定の締付力を
以て巻回することにより筒状に形成され、その剛
性体７は銅ろうを用いて薄肉筒部６ａに接合され
る。 As clearly shown in FIG. 4, the sleeve 5 includes a cylindrical cast body 6 having a thin-walled cylindrical portion 6a over a predetermined length from the end on the cylinder head side, and a cylindrical body attached to the thin-walled cylindrical portion 6a. It consists of a shaped rigid body 7. Here, the predetermined length is a range corresponding to, for example, the stroke of the piston head. The cast body 6 is made of cast iron, cast steel, or the like. Also, the cylindrical rigid body 7
is formed into a cylindrical shape by winding piano wire w, which is a high-tensile wire, around a thin-walled cylindrical portion 6a with a predetermined tightening force so that adjacent pieces are in close contact with each other, and the rigid body 7 is made of copper solder. It is joined to the thin-walled cylindrical portion 6a.
この薄肉筒部６ａと剛性体７とより複合部Ｃが
構成され、その複合部Ｃの肉厚t1は鋳造体６の薄
肉筒部６ｂの肉厚t2よりも薄く設定される。これ
により相隣るシリンダバレル２1，２2，２2，２
３，２3，２4の結合部８においては、両複合部Ｃ
間が厚肉筒部６ｂ間よりも厚くなる。そこで複合
部Ｃの厚肉となつた部分に水ジヤケツト４に連通
する水路９が設けられる。 The thin-walled cylindrical portion 6a and the rigid body 7 constitute a composite portion C, and the wall thickness t1 of the composite portion C is set to be thinner than the wall thickness t2 of the thin-walled cylindrical portion 6b of the cast body 6. As a result, the adjacent cylinder barrels 2 1 , 2 2 , 2 2 , 2
In the joint part 8 of 3 , 2 3 , 2 4 , both composite parts C
The space between the thick-walled cylinder portions 6b is thicker than the space between the thick-walled cylindrical portions 6b. Therefore, a water channel 9 communicating with the water jacket 4 is provided in the thick portion of the composite portion C.
このように構成すると、各シリンダバレル２1
〜２4において機関運転中に高温となる部分が、
その外周から冷却されるので、スリーブ５の円周
回りにおける熱膨脹量が略均一となり、スリーブ
の変形による偏摩耗を防止することができる。 With this configuration, each cylinder barrel 2 1
~2 In 4 , the parts that become hot during engine operation are
Since the sleeve 5 is cooled from its outer periphery, the amount of thermal expansion around the circumference of the sleeve 5 is approximately uniform, and uneven wear due to deformation of the sleeve can be prevented.
また鋳造体６の薄肉筒部６ａは剛性体７と共に
複合部Ｃを構成しているので、機関の高出力化に
十分対応することができる。 Further, since the thin-walled cylindrical portion 6a of the cast body 6 constitutes a composite portion C together with the rigid body 7, it is possible to sufficiently cope with the increase in the output of the engine.
鋳造体６のシリンダヘツド側の端部に厚肉筒部
２ｂを残置することにより、シリンダヘツドを取
付ける場合のガスケツト載置面１０が確保され
る。 By leaving the thick-walled cylindrical portion 2b at the end of the cast body 6 on the cylinder head side, a gasket mounting surface 10 is secured when the cylinder head is attached.
第５図は本発明の変形例を示し、スリーブ５は
シリンダヘツド側の端面から所定の長さに亘つて
薄肉筒部６ａを有する円筒状鋳造体６と、その薄
肉筒部６ａに被着された鋼製の円筒状剛性体７と
よりなる。 FIG. 5 shows a modification of the present invention, in which the sleeve 5 includes a cylindrical cast body 6 having a thin-walled cylindrical portion 6a over a predetermined length from the end face on the cylinder head side, and a sleeve 5 that is attached to the thin-walled cylindrical portion 6a. It consists of a cylindrical rigid body 7 made of steel.
剛性体７のシリンダヘツド側の端部は厚肉筒部
７ｂに形成されて前記同様ガスケツト載置面１０
が確保される。また剛性体７の残りの部分は薄肉
筒部７ａに形成されて鋳造体６の薄肉筒部６ａと
共に前記同様に複合部Ｃを構成する。また相隣る
複合部Ｃ間に水路９が設けられる。前記鋳造体６
と剛性体７間は銅ろうを用いて接合される。 The end of the rigid body 7 on the cylinder head side is formed into a thick-walled cylindrical portion 7b and has a gasket mounting surface 10 as described above.
is ensured. Further, the remaining portion of the rigid body 7 is formed into a thin-walled cylindrical portion 7a, and together with the thin-walled cylindrical portion 6a of the cast body 6 constitutes a composite portion C in the same manner as described above. Further, a water channel 9 is provided between adjacent composite parts C. The cast body 6
and the rigid body 7 are joined using copper solder.
Ｃ 発明の効果
本発明によれば、スリーブにおいて円筒状鋳造
体の薄肉筒部と、その薄肉筒部に被着される円筒
状剛性体とより複合部を構成し、その複合部の肉
厚を鋳造体の厚肉筒部のそれよりも博く設定した
ので、相隣るシリンダバレルの中心間距離を従来
のものと同一にしたまま、シリンダバレル相互の
結合部において両複合部間を厚肉に形成すること
ができる。そしてその厚肉部分に水ジヤケツトに
連通する水路を設けるので、内燃機関の小型軽量
化の構成を何等損うことなく、各シリンダバレル
をその外周から冷却してスリーブの円周回りにお
ける熱膨脹量を略均一にしスリーブの変形による
偏摩耗を防止することができる。C. Effects of the Invention According to the present invention, in the sleeve, the thin-walled cylindrical portion of the cylindrical cast body and the cylindrical rigid body attached to the thin-walled cylindrical portion constitute a composite portion, and the wall thickness of the composite portion is reduced. Since it is set wider than that of the thick-walled cylindrical part of the cast body, the distance between the centers of adjacent cylinder barrels remains the same as in the conventional model, and the thick-walled part between both composite parts at the joint between the cylinder barrels is made wider. can be formed into Since a waterway communicating with the water jacket is provided in the thick part, each cylinder barrel can be cooled from its outer periphery and the amount of thermal expansion around the circumference of the sleeve can be reduced without impairing the compact and lightweight structure of the internal combustion engine. It is possible to make the wear substantially uniform and prevent uneven wear due to deformation of the sleeve.
また鋳造体の薄肉筒部と剛性体による複合部は
鋳造体の厚肉筒部より薄くても機関の高出力化に
十分に対応し得るので何等問題を生じることはな
い。 Further, even if the composite part consisting of the thin-walled cylindrical part of the cast body and the rigid body is thinner than the thick-walled cylindrical part of the cast body, it will not cause any problems because it can sufficiently cope with the increase in the output of the engine.
第１図は本発明の一実施例の斜視図、第２図は
第１図−線断面図、第３図は第２図−線
断面図、第４図は第２図の部分拡大図、第５図は
変形例の第４図と同様の部分拡大図である。
Ｃ……複合部、１……シリンダブロツク、２…
…サイアミーズシリンダバレル、２1〜２4……シ
リンダバレル、３……シリンダブロツク外壁、４
……水ジヤケツト、５……スリーブ、６……鋳造
体、６ａ……薄肉筒部、６ｂ……厚肉筒部、７…
…剛性体、８……結合部、９……水路。
FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line of FIG. 1, FIG. 3 is a sectional view taken along the line of FIG. 2, and FIG. 4 is a partially enlarged view of FIG. FIG. 5 is a partially enlarged view similar to FIG. 4 of a modified example. C...Composite part, 1...Cylinder block, 2...
...Siamese cylinder barrel, 2 1 to 2 4 ... Cylinder barrel, 3 ... Cylinder block outer wall, 4
...Water jacket, 5...Sleeve, 6...Cast body, 6a...Thin-walled cylinder part, 6b...Thick-walled cylinder part, 7...
...Rigid body, 8...Joining part, 9...Waterway.
Claims (1)
レルを結合したサイアミーズシリンダバレルとの
間に該サイアミーズシリンダバレルの外周が臨む
水ジヤケツトを設け、各シリンダバレルにはスリ
ーブが鋳ぐるまれているサイアミーズ型シリンダ
ブロツクにおいて、前記スリーブを、シリンダヘ
ツド側の部分に所定の長さの薄肉筒部を有する円
筒状鋳造体と、前記薄肉筒部に被着される円筒状
剛性体とより構成し、前記鋳造体の前記薄肉筒部
と剛性体とよりなる複合部の肉厚を該鋳造体の厚
肉筒部の肉厚よりも薄く設定し、相隣る前記シリ
ンダバレルの結合部に、前記複合部間に位置し且
つ前記水ジヤケツトに連通する水路を設けたこと
を特徴とするサイアミーズ型シリンダブロツク。1. In a Siamese type cylinder block, a water jacket facing the outer periphery of the Siamese cylinder barrel is provided between the outer wall of the cylinder block and a Siamese cylinder barrel that connects a plurality of cylinder barrels, and a sleeve is cast into each cylinder barrel. , the sleeve is composed of a cylindrical cast body having a thin-walled cylindrical portion of a predetermined length on a cylinder head side portion, and a cylindrical rigid body attached to the thin-walled cylindrical portion, The thickness of the composite part consisting of the thin-walled cylinder part and the rigid body is set to be thinner than the wall thickness of the thick-walled cylinder part of the cast body, and the composite part is located between the composite parts at the joint part of the adjacent cylinder barrels. A Siamese type cylinder block further comprising a water channel communicating with the water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26389384A JPS61155644A (en) | 1984-12-14 | 1984-12-14 | Siamese type cylinder block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26389384A JPS61155644A (en) | 1984-12-14 | 1984-12-14 | Siamese type cylinder block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61155644A JPS61155644A (en) | 1986-07-15 |
| JPH0146702B2 true JPH0146702B2 (en) | 1989-10-11 |
Family
ID=17395716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26389384A Granted JPS61155644A (en) | 1984-12-14 | 1984-12-14 | Siamese type cylinder block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61155644A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2597220B2 (en) * | 1990-07-20 | 1997-04-02 | 株式会社クボタ | Cooling system for siamese-type cylinder of water-cooled multi-cylinder engine |
| KR100411034B1 (en) * | 2000-09-04 | 2003-12-18 | 현대자동차주식회사 | Engine block having a cooling structure |
| DE10247122A1 (en) * | 2002-10-09 | 2004-04-22 | Bayerische Motoren Werke Ag | Cylinder crankcase with cooling jacket for internal combustion engine has jacket forming two or more coolant channels in region of upper case sector |
-
1984
- 1984-12-14 JP JP26389384A patent/JPS61155644A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61155644A (en) | 1986-07-15 |
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