JPS6329163Y2 - - Google Patents
Info
- Publication number
- JPS6329163Y2 JPS6329163Y2 JP1981028707U JP2870781U JPS6329163Y2 JP S6329163 Y2 JPS6329163 Y2 JP S6329163Y2 JP 1981028707 U JP1981028707 U JP 1981028707U JP 2870781 U JP2870781 U JP 2870781U JP S6329163 Y2 JPS6329163 Y2 JP S6329163Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- passage
- bolt hole
- head
- cooling water
- 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 19
- 238000005192 partition Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 1
- 238000000034 method Methods 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、エンジンの冷却装置、殊にシリンダ
ブロツクに形成される冷却水通路の構成に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine cooling system, particularly to the structure of a cooling water passage formed in a cylinder block.
直列配置された複数個のシリンダを有するエン
ジンにおいて、シリンダブロツク内のシリンダボ
ア間隔を小さくして、エンジンの軽量化及び小型
化をはかることは既に試みられている。この場
合、シリンダボア間の間隔が薄くなるため、従来
のように、この間壁に鋳抜きで冷却水通路を形成
することが困難になる。実開昭54−72239号に係
る考案では、この問題に対処するため、特に熱的
条件が苛酷となるシリンダブロツク上部におい
て、シリンダボア間の間壁に、両側の冷却水ジヤ
ケツトを接続する冷却水通路をドリル加工等によ
り形成している。しかし、この公知の構成では、
加工上の問題から、間壁に形成される冷却水通路
は、シリンダヘツドをシリンダブロツクに固定す
るためのヘツドボルト用の穴を避けて、斜めに形
成されており、高温となるシリンダブロツク上部
の冷却性が悪く加工も極めて困難でその数にも制
限がある。また、有効な冷却水通路を形成するた
めには、ヘツドボルトの間隔を比較的大きくとら
ざるを得ず、シリンダヘツドとシリンダブロツク
との間の気密性の上から好ましくない。 In an engine having a plurality of cylinders arranged in series, attempts have already been made to reduce the cylinder bore spacing in the cylinder block in order to reduce the weight and size of the engine. In this case, since the distance between the cylinder bores becomes thin, it becomes difficult to form cooling water passages in the walls between the cylinder bores by casting, as in the past. In order to deal with this problem, the device disclosed in Utility Model Application Publication No. 54-72239 creates a cooling water passage that connects the cooling water jackets on both sides to the wall between the cylinder bores in the upper part of the cylinder block where the thermal conditions are especially severe. is formed by drilling etc. However, in this known configuration,
Due to processing problems, the cooling water passage formed in the partition wall is formed at an angle, avoiding the holes for the head bolts used to fix the cylinder head to the cylinder block, and is designed to cool the upper part of the cylinder block, which gets hot. It has poor properties, is extremely difficult to process, and its number is limited. Furthermore, in order to form an effective cooling water passage, the spacing between the head bolts must be relatively large, which is undesirable from the viewpoint of airtightness between the cylinder head and the cylinder block.
本考案は、エンジンの冷却装置における上述の
問題を解決することを目的とするもので、その構
成上の特徴は、シリンダボア間の間壁に、一端が
シリンダヘツドに面する頂面に開口し他端がシリ
ンダボア周りの冷却水通路に開口する複数個の縦
通路を形成し、シリンダブロツクの頂面近傍に
は、ヘツドボルト用のボルト穴を通り抜け上記の
縦通路に至る機械加工の横通路を形成し、ボルト
穴には、直径が横通路の直径より大きくこの穴と
横通路との連通を遮断するシールパイプを圧入固
定したことにある。縦通路の一部又は全部は、そ
の上端がシリンダヘツドに設けた冷却水ジヤケツ
ト又は冷却水通路に連通するようにしてもよい。
本考案のこの特徴によれば、シリンダボア間の間
壁に形成される冷却水通路はその位置に制限がな
く、またヘツドボルト用のボルト穴との干渉の問
題も生じないから、ボルト穴の位置も制限されな
くなる。また、シールパイプは、直径が横通路の
直径より大きいので、横通路を端部付近で塞ぐこ
とができ、横通路の外端側プラグの機能も果たす
ことができる。 The present invention aims to solve the above-mentioned problems in engine cooling systems, and its structural features include an opening in the partition wall between the cylinder bores, with one end opening on the top surface facing the cylinder head. A plurality of vertical passages are formed whose ends open into the cooling water passage around the cylinder bore, and a machined horizontal passage is formed near the top surface of the cylinder block that passes through the bolt hole for the head bolt and reaches the above-mentioned vertical passage. A seal pipe having a diameter larger than the diameter of the horizontal passage and blocking communication between the hole and the horizontal passage is press-fitted into the bolt hole and fixed therein. A part or all of the vertical passage may have an upper end communicating with a cooling water jacket or a cooling water passage provided in the cylinder head.
According to this feature of the present invention, there is no restriction on the position of the cooling water passage formed in the partition wall between the cylinder bores, and there is no problem of interference with the bolt hole for the head bolt, so the position of the bolt hole can be changed. no longer restricted. Furthermore, since the seal pipe has a diameter larger than the diameter of the lateral passage, it can close off the lateral passage near the end, and can also function as a plug on the outer end side of the lateral passage.
以下、本考案の一実施例を図について説明する
と、シリンダブロツク１には４個のシリンダボア
２が直列に形成されており、該シリンダブロツク
１の上面１ａには、シリンダヘツド３がガスケツ
ト４を介して取付けられる。シリンダヘツド３の
取付けは、ヘツドボルト５により行なわれるが、
ヘツドボルト用のボルト穴６は、シリンダボア２
の配列方向に対して直角で、各ボア２間を通る面
内において、シリンダボア列の両側に形成され
る。また。シリンダブロツク１の両端部にも、同
様にボルト穴６が形成される。シリンダブロツク
１には冷却水ジヤケツト７が形成され、シリンダ
ヘツド３には冷却水ジヤケツト８が形成されてい
る。シリンダブロツク１の上部には、シリンダボ
ア２間の間壁１ｂに、上面１ａから冷却水ジヤケ
ツト７まで延びる縦通路９ａ，９ｂが形成されて
おり、一方の縦通路９ａは、その上端が、シリン
ダヘツド３内に形成した冷却水通路１０を介して
ジヤケツト８に連通している。さらに、間壁１ｂ
の上部には、シリンダブロツク１の一側から一方
のボルト穴６を通り抜けて縦通路９ａ，９ｂに連
通する横通路１１が形成されている。横通路１１
の下方には、ボルト穴６よりも下方の位置におい
て、シリンダブロツク１の他側から延びて縦通路
９ａ，９ｂに連通する横通路１２が形成され、該
横通路１２の外端は、シールプラグ１３により閉
じられている。通路９ａ，９ｂ，１０，１１，１
２はいずれもドリル加工により形成される。シリ
ンダブロツク１には、横通路１１と交差するボル
ト穴６に、シールパイプ１４が圧入・固定され
る。このシールパイプ１４は、ボルト穴６と横通
路１１との間の連通を遮断する作用を果し、また
シールパイプ１４はその直径が横通路１１の直径
より大きいので、該横通路１１の外端側プラグの
機能も果す。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.A cylinder block 1 has four cylinder bores 2 formed in series, and a cylinder head 3 is connected to the upper surface 1a of the cylinder block 1 through a gasket 4. can be installed. The cylinder head 3 is installed using head bolts 5.
The bolt hole 6 for the head bolt is the cylinder bore 2.
The cylinder bores are formed on both sides of the cylinder bore row in a plane passing between the respective bores 2 at right angles to the arrangement direction of the cylinder bores. Also. Bolt holes 6 are similarly formed at both ends of the cylinder block 1. A cooling water jacket 7 is formed in the cylinder block 1, and a cooling water jacket 8 is formed in the cylinder head 3. In the upper part of the cylinder block 1, vertical passages 9a and 9b extending from the upper surface 1a to the cooling water jacket 7 are formed in the partition wall 1b between the cylinder bores 2, and the upper end of one vertical passage 9a is connected to the cylinder head. It communicates with the jacket 8 via a cooling water passage 10 formed in the jacket 3. Furthermore, the partition wall 1b
A horizontal passage 11 passing through one bolt hole 6 from one side of the cylinder block 1 and communicating with the vertical passages 9a and 9b is formed in the upper part of the cylinder block 1. Side passage 11
A horizontal passage 12 extending from the other side of the cylinder block 1 and communicating with the vertical passages 9a and 9b is formed below the bolt hole 6, and the outer end of the horizontal passage 12 is connected to the seal plug. It is closed by 13. Passage 9a, 9b, 10, 11, 1
2 are both formed by drilling. A seal pipe 14 is press-fitted and fixed into the cylinder block 1 into a bolt hole 6 intersecting with the horizontal passage 11. This seal pipe 14 functions to block communication between the bolt hole 6 and the horizontal passage 11, and since the seal pipe 14 has a diameter larger than the diameter of the horizontal passage 11, the outer end of the horizontal passage 11 It also functions as a side plug.
なお第２図の破線で示すようにシリンダヘツド
３に、ボルト穴６を通り抜けて冷却水通路１０に
連通するドリル加工の横通路を設けて、該通路を
縦通路９ｂと連通させるようにしてもよい。この
場合もシールパイプが必要である。 Note that, as shown by the broken line in FIG. 2, a drilled horizontal passage that passes through the bolt hole 6 and communicates with the cooling water passage 10 may be provided in the cylinder head 3, and this passage may be made to communicate with the vertical passage 9b. good. A sealed pipe is also required in this case.
以上述べたように、本考案によれば、縦通路と
横通路とからなる冷却水通路をドリル加工により
シリンダブロツク間壁上部に形成し、特に横通路
は、ヘツドボルト用のボルト穴との関係において
独得の配置としたから、通路の配置に制限を受け
ることが少なく、高温となるシリンダブロツクの
頂面近傍に配置できるため、頂面近傍の冷却能力
を高めることができ、十分な通路面積を確保する
ことができる。また、間壁に形成される冷却水通
路のためにヘツドボルト用のボルト穴間壁を拡げ
る必要もない。 As described above, according to the present invention, a cooling water passage consisting of a vertical passage and a horizontal passage is formed in the upper part of the wall between the cylinder blocks by drilling, and in particular, the horizontal passage is formed in relation to the bolt hole for the head bolt. Due to the unique arrangement, there are no restrictions on the passage arrangement, and it can be placed near the top of the cylinder block, which gets hot, increasing the cooling capacity near the top and ensuring a sufficient passage area. can do. Furthermore, there is no need to widen the bolt hole wall for the head bolt to accommodate the cooling water passage formed in the wall.
第１図は本考案の一実施例を示すシリンダブロ
ツクの平面図、第２図は間壁を通る垂直断面図で
ある。
１…シリンダブロツク、２…シリンダボア、３
…シリンダヘツド、５…ヘツドボルト、７，８…
冷却水ジヤケツト、９ａ，９ｂ…縦通路、１１…
横通路、１４…シールパイプ。
FIG. 1 is a plan view of a cylinder block showing an embodiment of the present invention, and FIG. 2 is a vertical sectional view through a partition wall. 1...Cylinder block, 2...Cylinder bore, 3
...Cylinder head, 5...Head bolt, 7, 8...
Cooling water jacket, 9a, 9b...vertical passage, 11...
Side passage, 14...Seal pipe.
Claims (1)
列され、各シリンダボア間の中間を通りシリンダ
ボア配列方向と直角な面内に、シリンダヘツドを
シリンダブロツクに固定するためのヘツドボルト
が配置されたエンジンにおいて、シリンダブロツ
クには、シリンダボア間の間壁に、一端がシリン
ダヘツドに面する頂面に開口し他端がシリンダボ
ア周りの冷却水通路に開口する機械加工の縦通路
が複数個設けられ、シリンダブロツクの頂面近傍
にはヘツドボルト用のボルト穴を通り抜け前記縦
通路に至る機械加工の横通路が設けられ、前ボル
ト穴には、直径が横通路の直径より大きくボルト
穴と横通路との連通を遮断するシールパイプが圧
入固定されたことを特徴とするエンジンの冷却装
置。 In an engine in which cylinder bores are arranged in a row within a cylinder block, and head bolts for fixing the cylinder head to the cylinder block are arranged in a plane that passes through the middle between each cylinder bore and is perpendicular to the direction in which the cylinder bores are arranged. A plurality of machined vertical passages are provided in the partition wall between the cylinder bores, one end of which opens at the top surface facing the cylinder head, and the other end of which opens into the cooling water passage around the cylinder bore. A machined horizontal passage passing through the bolt hole for the head bolt and reaching the vertical passage is provided in the front bolt hole, and a seal pipe having a diameter larger than the diameter of the horizontal passage and blocking communication between the bolt hole and the horizontal passage is provided in the front bolt hole. An engine cooling device characterized by being press-fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981028707U JPS6329163Y2 (en) | 1981-03-02 | 1981-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981028707U JPS6329163Y2 (en) | 1981-03-02 | 1981-03-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57142140U JPS57142140U (en) | 1982-09-06 |
| JPS6329163Y2 true JPS6329163Y2 (en) | 1988-08-05 |
Family
ID=29826339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981028707U Expired JPS6329163Y2 (en) | 1981-03-02 | 1981-03-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6329163Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS611641U (en) * | 1984-06-09 | 1986-01-08 | マツダ株式会社 | V-type engine cylinder block structure |
| JPH0313548Y2 (en) * | 1984-09-13 | 1991-03-27 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566922B2 (en) * | 1975-12-27 | 1981-02-14 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54173113U (en) * | 1978-05-29 | 1979-12-07 | ||
| JPS6218677Y2 (en) * | 1979-06-26 | 1987-05-13 |
-
1981
- 1981-03-02 JP JP1981028707U patent/JPS6329163Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566922B2 (en) * | 1975-12-27 | 1981-02-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57142140U (en) | 1982-09-06 |
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