JPS6210453Y2 - - Google Patents
Info
- Publication number
- JPS6210453Y2 JPS6210453Y2 JP10710381U JP10710381U JPS6210453Y2 JP S6210453 Y2 JPS6210453 Y2 JP S6210453Y2 JP 10710381 U JP10710381 U JP 10710381U JP 10710381 U JP10710381 U JP 10710381U JP S6210453 Y2 JPS6210453 Y2 JP S6210453Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cooling water
- cylinders
- bores
- cylinder block
- 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
- 239000000498 cooling water Substances 0.000 claims description 35
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003921 oil Substances 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、多気筒エンジンのシリンダブロツク
に関し、特にシリンダの配列方向に冷却水を循環
する冷却水通路を設けたものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder block for a multi-cylinder engine, and particularly to one provided with a cooling water passage for circulating cooling water in the direction in which the cylinders are arranged.
一般に、多気筒エンジンのシリンダブロツクに
おいては、複数のシリンダ周辺に、該シリンダの
配列方向に冷却水を循環する冷却水通路を設け
て、シリンダからの燃焼熱によつて加熱されるシ
リンダブロツクを適温に冷却するようになされて
いる。しかし、隣接するシリンダボア間において
は、両シリンダからの熱を受けるため、冷却が不
十分であり、シリンダ周辺の冷却が不均一となつ
てシリンダ周辺に温度差が生じ、その結果、シリ
ンダが変形して、圧縮洩れや潤滑オイルの燃焼室
への流入によるオイル消費量の増大等を招くとい
う問題があつた。 Generally, in the cylinder block of a multi-cylinder engine, a cooling water passage is provided around the plurality of cylinders to circulate cooling water in the direction in which the cylinders are arranged, so that the cylinder block heated by combustion heat from the cylinders is kept at an appropriate temperature. It is designed to cool down. However, since adjacent cylinder bores receive heat from both cylinders, cooling is insufficient, and the cooling around the cylinders becomes uneven, creating a temperature difference around the cylinders, and as a result, the cylinders become deformed. However, there were problems such as compression leaks and an increase in oil consumption due to lubricating oil flowing into the combustion chamber.
そのため、従来、例えば実開昭52−113105号公
報に示されているように、隣接するシリンダボア
間に、シリンダ配列方向に沿つた両側の冷却水通
路を連通するバイパス路を設けて、シリンダボア
間を冷却するようにしたものが提案されている。 Therefore, conventionally, as shown in Japanese Utility Model Application Publication No. 52-113105, a bypass passage was provided between adjacent cylinder bores to communicate the cooling water passages on both sides along the cylinder arrangement direction. A cooling device has been proposed.
しかし、この提案のものでは、シリンダボア間
のバイパス路において両側の冷却水通路から流入
する冷却水によつて対流が生じるため、実際には
該バイパス路を冷却水が十分に流れず、冷却効果
を十分に上げることができないという欠点があ
る。 However, in this proposal, convection occurs in the bypass path between the cylinder bores due to the cooling water flowing in from the cooling water passages on both sides, so in reality, the cooling water does not flow sufficiently through the bypass path, and the cooling effect is lost. The drawback is that it cannot be raised sufficiently.
また、シリンダボア間の冷却効果を上げるべ
く、バイパス路の幅または高さを大きくして通路
面積を増大させることが考えられるが、シリンダ
ボア間は強度的に一定の肉厚よりも薄くできない
関係上、シリンダブロツクのシリンダ配列方向長
さまたは高さが大となつて、スペース上の制約か
ら実施が困難である。 In addition, in order to increase the cooling effect between the cylinder bores, it is possible to increase the passage area by increasing the width or height of the bypass passage, but for reasons of strength, the wall thickness between the cylinder bores cannot be made thinner than a certain level. The length or height of the cylinder block in the cylinder arrangement direction becomes large, making it difficult to implement due to space constraints.
そこで、本考案は斯かる諸点に鑑みてなされた
もので、複数のシリンダ周辺に設けられ該シリン
ダの配列方向に冷却水を循環する冷却水通路を有
する多気筒エンジンのシリンダブロツクにおい
て、シリンダ配列方向に沿つた両側の冷却水通路
を各々独立して、隣接するシリンダボア間におい
て合流することなく互いに交差するように形成す
ることにより、シリンダボア間に冷却水を、対流
を生ずることなくスムーズにかつ略２倍の流量で
もつて流すようにし、よつてシリンダボア間の冷
却効果を上げて、シリンダ周辺を均一に冷却し得
るようにした多気筒エンジンのシリンダブロツク
を提供せんとするものである。 Therefore, the present invention has been made in view of the above points, and is a cylinder block of a multi-cylinder engine having cooling water passages provided around a plurality of cylinders and circulating cooling water in the direction in which the cylinders are arranged. By forming the cooling water passages on both sides along the cylinder bores independently so that they intersect with each other without merging between adjacent cylinder bores, the cooling water can flow smoothly between the cylinder bores without causing convection. It is an object of the present invention to provide a cylinder block for a multi-cylinder engine in which the flow rate is doubled, thereby increasing the cooling effect between the cylinder bores and uniformly cooling the area around the cylinders.
以下、本考案を図面に示す実施例に基づいて詳
細に説明する。 Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第１図および第２図は本考案に係る４気筒エン
ジンのシリンダブロツクＡを示し、１はシリンダ
ブロツク本体、２ａ〜２ｄはシリンダブロツク本
体１に縦列状態（図では左右方向）に配列形成さ
れた４つの第１〜第４シリンダ、３ａ〜３ｃはシ
リンダブロツク本体１の隣接するシリンダボア
間、４はクランク軸（図示せず）を支承する軸受
部、５はスカート部である。 Figures 1 and 2 show a cylinder block A of a four-cylinder engine according to the present invention, where 1 is the cylinder block body, and 2a to 2d are arranged in the cylinder block body 1 in tandem (in the horizontal direction in the figure). The four first to fourth cylinders, 3a to 3c, are spaced between adjacent cylinder bores of the cylinder block body 1, 4 is a bearing portion that supports a crankshaft (not shown), and 5 is a skirt portion.
そして、上記シリンダブロツク本体１の各シリ
ンダ２ａ〜２ｄ周辺には、シリンダ２ａ〜２ｄの
配列方向（図では左右方向）に冷却水を循環する
２系統の冷却水通路６ａ，６ｂが設けられてい
る。一方の冷却水通路６ａは、シリンダブロツク
本体１の一端（図では左端）から第１シリンダ２
ａのシリンダ配列方向一側がわを周回したのち、
第１シリンダ２ａと第２シリンダ２ｂとのシリン
ダボア間３ａを通過して第２シリンダ２ｂのシリ
ンダ配列方向他側がわを周回し、さらに第２シリ
ンダ２ｂと第３シリンダ２ｃとのシリンダボア間
３ｂを通過して第３シリンダ２ｃのシリンダ配列
方向一側がわに至り、以後同様に蛇行してシリン
ダブロツク本体１の他端（図では右端）に至るよ
うに形成され、また、他方の冷却水通路６ｂは、
シリンダブロツク本体１の一端から第１シリンダ
２ａのシリンダ配列方向他側がわを周回したの
ち、第１シリンダ２ａと第２シリンダ２ｂとのシ
リンダボア間３ａを上記一方の冷却水通路６ａの
下方を潜つて通過して第２シリンダ２ｂのシリン
ダ配列方向一側がわを周回し、さらに第２シリン
ダ２ｂと第３シリンダ２ｃとのシリンダボア間３
ｂを上記一方の冷却水通路６ａの上方を跨いで通
過して第３シリンダ２ｃのシリンダ配列方向他側
がわに至り、以後同様に蛇行してシリンダブロツ
ク本体１の他端に至るように形成されている。換
言すれば、シリンダ配列方向に沿つた両側の冷却
水通路６ａ，６ｂは各々独立して、シリンダボア
間３ａ〜３ｃにおいて合流することなく互いに交
差するように形成されている。さらに、シリンダ
ボア間３ａ〜３ｃにおいては、各冷却水通路６
ａ，６ｂはその通路高さを略半分にして通路面積
が略1/2になるように形成されている。 Two cooling water passages 6a and 6b are provided around each of the cylinders 2a to 2d of the cylinder block body 1 to circulate cooling water in the arrangement direction of the cylinders 2a to 2d (in the left-right direction in the figure). . One cooling water passage 6a runs from one end (left end in the figure) of the cylinder block body 1 to the first cylinder 2.
After going around one side in the cylinder arrangement direction of a,
It passes through the cylinder bore gap 3a between the first cylinder 2a and the second cylinder 2b, goes around the other side of the second cylinder 2b in the cylinder arrangement direction, and then passes through the cylinder bore gap 3b between the second cylinder 2b and the third cylinder 2c. It is formed to reach one side of the third cylinder 2c in the cylinder arrangement direction, and thereafter meander in the same manner to reach the other end (the right end in the figure) of the cylinder block body 1, and the other cooling water passage 6b is ,
After going around the other side of the first cylinder 2a in the cylinder arrangement direction from one end of the cylinder block main body 1, it goes under the one cooling water passage 6a between the cylinder bores 3a between the first cylinder 2a and the second cylinder 2b. It passes through, goes around one side of the second cylinder 2b in the cylinder arrangement direction, and further extends between the cylinder bores 3 between the second cylinder 2b and the third cylinder 2c.
b passes above one of the cooling water passages 6a, reaches the other side of the third cylinder 2c in the cylinder arrangement direction, and thereafter meanders in the same manner to reach the other end of the cylinder block body 1. ing. In other words, the cooling water passages 6a and 6b on both sides along the cylinder arrangement direction are formed independently so as to cross each other without merging between the cylinder bores 3a to 3c. Furthermore, between the cylinder bores 3a to 3c, each cooling water passage 6
A and 6b are formed so that the height of the passages is approximately halved and the area of the passages is approximately halved.
したがつて、上記の構成からなるシリンダブロ
ツクＡは、シリンダ配列方向に沿つた両側の冷却
水通路６ａ，６ｂが各々独立して、シリンダボア
間３ａ〜３ｃにおいて合流することなく互いに交
差するように、かつ通路面積が略1/2になるよう
に形成されているため、各冷却水通路６ａ，６ｂ
からの冷却水はシリンダボア間３ａ〜３ｃにスム
ーズに流れて、シリンダボア間３ａ〜３ｃを流れ
る冷却水流量が略２倍になるとともに、冷却水流
が絞られてその流速が略２倍に増大することによ
り、シリンダボア間３ａ〜３ｃの冷却効果が十分
に高められ、シリンダ２ａ〜２ｄ周辺が均一に冷
却されることになる。よつて、この均一冷却によ
りシリンダ２ａ〜２ｄに変形が生じることはな
く、耐久性を向上させることができる。 Therefore, in the cylinder block A having the above-mentioned configuration, the cooling water passages 6a and 6b on both sides along the cylinder arrangement direction are arranged independently so that they intersect with each other without merging between the cylinder bores 3a to 3c. In addition, since the passage area is approximately halved, each cooling water passage 6a, 6b
The cooling water flows smoothly between the cylinder bores 3a to 3c, and the flow rate of the cooling water flowing between the cylinder bores 3a to 3c is approximately doubled, and the cooling water flow is throttled to approximately double the flow rate. As a result, the cooling effect between the cylinder bores 3a to 3c is sufficiently enhanced, and the periphery of the cylinders 2a to 2d is uniformly cooled. Therefore, due to this uniform cooling, deformation does not occur in the cylinders 2a to 2d, and durability can be improved.
尚、上記実施例では２系統の冷却水通路６ａ，
６ｂを設けたが、該両冷却水通路６ａ，６ｂをシ
リンダブロツク本体１の他端において接続して１
系統の冷却水通路としてもよい。また、２系統の
冷却水通路を各々、シリンダ配列方向の一側がわ
または他側がわにおいて波頭部がシリンダボア間
に位置するように波状に形成し、シリンダボア間
で合流することなく互いに交差させるようにして
もよい。要は、シリンダ配列方向に沿つた両側の
冷却水通路を各々独立して、シリンダボア間で合
流することなく互いに交差するように形成すれば
よい。 In the above embodiment, two systems of cooling water passages 6a,
6b is provided, but the two cooling water passages 6a and 6b are connected at the other end of the cylinder block body 1.
It may also be used as a system cooling water passage. In addition, each of the two cooling water passages is formed in a wavy shape so that the wave head is located between the cylinder bores on one side or the other side in the cylinder arrangement direction, so that they intersect with each other without merging between the cylinder bores. You can also do this. In short, the cooling water passages on both sides along the cylinder arrangement direction may be formed independently so that they intersect with each other without merging between the cylinder bores.
また、上記実施例では４気筒エンジンのシリン
ダブロツクについて述べたが、本考案は２気筒、
６気筒等の各種多気筒エンジンのシリンダブロツ
クにも同様に適用できるのは勿論である。 Furthermore, in the above embodiment, the cylinder block of a four-cylinder engine was described, but the present invention is applicable to a two-cylinder engine.
Of course, the present invention can also be applied to cylinder blocks of various multi-cylinder engines such as 6-cylinder engines.
以上説明したように、本考案の多気筒エンジン
のシリンダブロツクによれば、シリンダボア間に
冷却水を対流を生ずることなくスムーズにかつ略
２倍の流量でもつて流すことができるので、シリ
ンダボア間の冷却効果を十分に高めて、シリンダ
周辺の冷却の均一化を図ることができ、よつてシ
リンダの変形を防止して耐久性の向上を図ること
ができるものである。 As explained above, according to the cylinder block of the multi-cylinder engine of the present invention, the cooling water can flow between the cylinder bores smoothly and at approximately twice the flow rate without causing convection. The effect can be sufficiently enhanced to ensure uniform cooling around the cylinder, thereby preventing deformation of the cylinder and improving durability.
図面は本考案の実施例を示し、第１図は縦断側
面図、第２図は第１図の−線断面図である。
Ａ……シリンダブロツク、２ａ〜２ｄ……シリ
ンダ、３ａ〜３ｃ……シリンダボア間、６ａ，６
ｂ……冷却水通路。
The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view, and FIG. 2 is a sectional view taken along the line -- in FIG. A... Cylinder block, 2a to 2d... Cylinder, 3a to 3c... Between cylinder bores, 6a, 6
b...Cooling water passage.
Claims (1)
列方向に冷却水を循環する冷却水通路を有する多
気筒エンジンのシリンダブロツクにおいて、シリ
ンダ配列方向に沿つた両側の冷却水通路を各々独
立して、隣接するシリンダボア間において合流す
ることなく互いに交差するように形成したことを
特徴とする多気筒エンジンのシリンダブロツク。 In a cylinder block of a multi-cylinder engine having cooling water passages provided around a plurality of cylinders and circulating cooling water in the direction in which the cylinders are arranged, the cooling water passages on both sides along the direction in which the cylinders are arranged are arranged independently and adjacent to each other. A cylinder block for a multi-cylinder engine, characterized in that the cylinder bores are formed so that they intersect with each other without merging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10710381U JPS5812655U (en) | 1981-07-17 | 1981-07-17 | Cylinder block of multi-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10710381U JPS5812655U (en) | 1981-07-17 | 1981-07-17 | Cylinder block of multi-cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5812655U JPS5812655U (en) | 1983-01-26 |
| JPS6210453Y2 true JPS6210453Y2 (en) | 1987-03-11 |
Family
ID=29901550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10710381U Granted JPS5812655U (en) | 1981-07-17 | 1981-07-17 | Cylinder block of multi-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5812655U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6479330B2 (en) * | 2014-04-11 | 2019-03-06 | 三菱重工エンジン＆ターボチャージャ株式会社 | Internal combustion engine system |
-
1981
- 1981-07-17 JP JP10710381U patent/JPS5812655U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5812655U (en) | 1983-01-26 |
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