JPS6397821A - Cooling structure for multicylinder series engine - Google Patents
Cooling structure for multicylinder series engineInfo
- Publication number
- JPS6397821A JPS6397821A JP24275786A JP24275786A JPS6397821A JP S6397821 A JPS6397821 A JP S6397821A JP 24275786 A JP24275786 A JP 24275786A JP 24275786 A JP24275786 A JP 24275786A JP S6397821 A JPS6397821 A JP S6397821A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil passage
- passage hole
- cylinder
- passage
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 9
- 239000010687 lubricating oil Substances 0.000 claims abstract description 42
- 238000005192 partition Methods 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 description 9
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はディーゼルエンジン等の多気筒直列エンジンの
冷却構造を対象としており、特にそのようなエンジンに
おいて、隣接する２個のシリンダの間のシリンダブロッ
ク部分（隔壁部）に冷却用液体を通すための通路孔を設
けた構造を対象としている。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to a cooling structure for a multi-cylinder in-line engine such as a diesel engine. The target is a structure in which the block portion (partition wall portion) is provided with passage holes for passing cooling liquid.
（従来の技術）
一般に、シリンダ間の隔壁部には冷却水通路用の鋳抜き
孔が設けてあり、その鋳抜き孔を流れる冷却水により隔
壁部を冷却するようになっている。(Prior Art) Generally, a cast hole for a cooling water passage is provided in a partition wall between cylinders, and the partition wall is cooled by cooling water flowing through the cast hole.
又別の従来例として、実公昭５２−５４６８２号には次
のような構造が記載されている。その構造では、シリン
ダン間の隔壁部に冷却水通路孔を機械加工やレーザー加
工等で斜めに設け、シリンダブロックの一方の側面側に
設けた冷却水ジャケットと他方の側に設けた冷却水ジャ
ケットとをつなぐように構成されている。As another conventional example, the following structure is described in Japanese Utility Model Publication No. 52-54682. In this structure, cooling water passage holes are provided diagonally in the partition between the cylinders by machining or laser processing, and a cooling water jacket is provided on one side of the cylinder block and a cooling water jacket is provided on the other side. It is configured to connect.
（発明が解決しようとする問題点）
ところが上記従来構造の内、前者の構造では、鋳抜き孔
の加工に手間が掛かるという不具合がある。又後者の構
造では、単一構造のシリンダブロックにおいて、両側の
冷却水ジャケットの間だけに冷却水通路孔を加工する必
要があるので、その加工を行いに（いという問題がある
。(Problems to be Solved by the Invention) However, among the above-mentioned conventional structures, the former structure has a problem in that it takes time and effort to process the cast holes. Furthermore, in the latter structure, it is necessary to machine cooling water passage holes only between the cooling water jackets on both sides in a cylinder block having a single structure.
、更にいずれの従来構造においても、冷却用液体として
水を使用しているので、冷却水通路が水垢により閉塞さ
れる恐れがあり、特にこの問題は、海水をそのまま冷却
水として使用する海水冷却直冷仕様のエンジンでは顕著
になる。Furthermore, since water is used as the cooling liquid in any of the conventional structures, there is a risk that the cooling water passages may be blocked by limescale.This problem is particularly problematic in direct seawater cooling, where seawater is used directly as cooling water. This becomes noticeable in cold-spec engines.
（問題点を解決するための手段）
上記問題を解決するために、本発明は、複数のシリンダ
をそれらの中心線が同一平面上に並ぶように配置した多
気筒直列エンジンにおいて、隣接する２個のシリンダ間
の隔壁部に、該隔壁部をシリンダ中心線沿って真っ直ぐ
に貫通する潤滑油通路孔を設け、該潤滑油通路孔の人口
をシリンダブロックの内部のメインギヤラリに接続した
ことを特徴としている。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a multi-cylinder in-line engine in which a plurality of cylinders are arranged so that their center lines are aligned on the same plane. A lubricating oil passage hole is provided in the partition between the cylinders of the cylinder along the cylinder center line, and the lubricating oil passage hole is connected to the main gear rally inside the cylinder block. There is.
又実施例構造では、上記潤滑油通路孔の入口を潤滑油通
路の途中に設け、潤滑油通路の一端の出口をシリンダブ
ロックのクランク軸用軸受ボスの内周面に開口させ、他
端の出口をシリンダヘッドの内部の貫通油路を介して弁
腕支え台の内部の弁腕用潤滑油通路に接続した構造とな
っている。Further, in the structure of the embodiment, the entrance of the lubricating oil passage hole is provided in the middle of the lubricating oil passage, the outlet at one end of the lubricating oil passage is opened on the inner peripheral surface of the crankshaft bearing boss of the cylinder block, and the outlet at the other end is opened in the inner peripheral surface of the bearing boss for the crankshaft of the cylinder block. is connected to a lubricating oil passage for the valve arm inside the valve arm support base via a through-oil passage inside the cylinder head.
（作用）
上記構造によると、メインギヤラリから通路孔に流入し
た潤滑油により隔壁部が冷却される。又実施例構造では
、潤滑油通路を流れた潤滑油の一部は、クランク軸用軸
受ボスの内周面に流出してクランク軸用の軸受メタルを
潤滑する。又残りの潤滑油は、シリンダヘッド内部の貫
通油路を通って弁腕用潤滑油通路に流入し、弁腕支持部
を潤滑する。(Function) According to the above structure, the partition wall portion is cooled by the lubricating oil flowing into the passage hole from the main gear rally. Further, in the structure of the embodiment, a part of the lubricating oil that has flowed through the lubricating oil passage flows out onto the inner circumferential surface of the crankshaft bearing boss to lubricate the crankshaft bearing metal. The remaining lubricating oil flows into the valve arm lubricating oil passage through the oil passage inside the cylinder head, and lubricates the valve arm support portion.
（実施例）
第１図は本発明実施例のシリンダブロック１の断面略図
、第２図は第１図の一部切欠き■−■断面略図である。(Embodiment) FIG. 1 is a schematic cross-sectional view of a cylinder block 1 according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view taken along line 1--2 with a partial cutout in FIG.
これらの図において、シリンダブロック１は全体が単一
の構造体であり、例えば３個のシリンダ２を形成してい
る。これらのシリンダ２は直列に配置されており、各シ
リンダ中心線４が同一平面（シリンダ中心面５）上にお
いて互いに平行に延びている。In these figures, the cylinder block 1 is a single structure as a whole and forms, for example, three cylinders 2. These cylinders 2 are arranged in series, and each cylinder center line 4 extends parallel to each other on the same plane (cylinder center plane 5).
隣接する各２個のシリンダ２の間には隔壁部７が設けで
ある。隔壁部７はシリンダ中心線４と平行に延びてシリ
ンダ中心面５と交差している。第１図の如く、隔壁部７
の下端部にはクランク軸１０用の軸受メタル１１の上半
部を支持するための円弧状の軸受ボス１２が形成されて
いる。隔壁部７の上端面１３はシリンダヘッド取り付は
面の一部を構成している。A partition wall portion 7 is provided between each two adjacent cylinders 2. The partition wall portion 7 extends parallel to the cylinder center line 4 and intersects with the cylinder center plane 5. As shown in FIG.
An arcuate bearing boss 12 for supporting the upper half of a bearing metal 11 for the crankshaft 10 is formed at the lower end of the crankshaft 10 . The upper end surface 13 of the partition wall portion 7 constitutes a part of the cylinder head mounting surface.
各隔壁部７には潤滑油通路孔１５がシリンダ中心線４と
平行に設けである。通路孔１５はきり孔により形成され
ており、軸受ボス１２の内周面から上端面１３まで、そ
の中心線がシリンダ中心面５と一致する状態で真っ直ぐ
に延びている。Each partition wall 7 is provided with a lubricating oil passage hole 15 parallel to the cylinder centerline 4. The passage hole 15 is formed by a bored hole, and extends straight from the inner peripheral surface of the bearing boss 12 to the upper end surface 13 with its center line coinciding with the cylinder center surface 5.
通路孔１５の入口はその下部に形成されており、接続油
路１６を介してメインギヤラリ１７に接続している。メ
インギヤラリ１７は周知の構造で、潤滑油ポンプ（図示
せず）から供給された潤滑油をエンジン各部へ供給する
ようになっており、シリンダブロック１の一方の側壁１
８の内部をクランク軸１０と平行に延びている。接続油
路１６はメインギヤラリ１７から通路孔１５までシリン
ダ中心面５と直角な方向に延びている。The entrance of the passage hole 15 is formed at its lower part, and is connected to the main gear rally 17 via a connecting oil passage 16. The main gear rally 17 has a well-known structure and is designed to supply lubricating oil supplied from a lubricating oil pump (not shown) to various parts of the engine.
8 and extends parallel to the crankshaft 10. The connecting oil passage 16 extends from the main gear lary 17 to the passage hole 15 in a direction perpendicular to the cylinder center plane 5.
シリンダブロック１の上端面にはシリンダヘッド２０が
取り付けられる。シリンダヘッド２０には通路孔１５に
接続する貫通油路２１が通路孔１５と間怠に設けである
。A cylinder head 20 is attached to the upper end surface of the cylinder block 1 . A through oil passage 21 connected to the passage hole 15 is provided in the cylinder head 20 and is spaced apart from the passage hole 15 .
第３図の如く、シリンダヘッド２０の上端には弁腕支え
台２２が取り付けである。貫通油路２１の上端は弁腕支
え台２２の内部の潤滑油通路２３の入口に接続している
。弁腕支え台２２の上端両側部には弁腕２５を支持する
ための支持部２６が形成されている。上記潤滑油通路２
３は弁腕支え台２２の内部で分岐して出口が各支持部２
６の外周面に開口している。As shown in FIG. 3, a valve arm support 22 is attached to the upper end of the cylinder head 20. The upper end of the penetrating oil passage 21 is connected to the entrance of a lubricating oil passage 23 inside the valve arm support 22 . Support portions 26 for supporting the valve arm 25 are formed on both sides of the upper end of the valve arm support stand 22 . Above lubricating oil passage 2
3 is branched inside the valve arm support base 22, and the outlet is connected to each support part 2.
It opens on the outer peripheral surface of 6.
上記構造によると、メインギヤラリ１７から接続油路１
６を経て通路孔１５へ流入した潤滑油は、一部が通路孔
１５を下向きに流れて軸受ボス１２の内周面に達する。According to the above structure, from the main gear rally 17 to the connecting oil path 1
A portion of the lubricating oil that has flowed into the passage hole 15 through the passage hole 15 flows downward through the passage hole 15 and reaches the inner circumferential surface of the bearing boss 12 .
その他の潤滑油は通路孔１５を上向きに流れ、貫通油路
２１を通って潤滑油通路２３へ流入し、潤滑油通路２３
から支持部２６の表面に達する。Other lubricating oil flows upward through the passage hole 15, passes through the oil passage 21, flows into the lubricating oil passage 23, and enters the lubricating oil passage 23.
and reaches the surface of the support portion 26.
このようにして潤滑油が通路孔１５全体を流れることに
より、隔壁部７やその近傍のシリンダブロック部分は潤
滑油により冷却される。又軸受ボス１２の内周面に達し
た潤滑油は軸受メタル１１を潤滑し、支持部２６に達し
た潤滑油はその軸受面を潤滑する。As the lubricating oil flows through the passage hole 15 in this manner, the partition wall portion 7 and the cylinder block portions in the vicinity thereof are cooled by the lubricating oil. Further, the lubricating oil that has reached the inner peripheral surface of the bearing boss 12 lubricates the bearing metal 11, and the lubricating oil that has reached the support portion 26 lubricates the bearing surface.
上記構造において、潤滑油に対する軸受メタル１１部分
の抵抗と支持部２６部分の抵抗等を適当に設定し、通路
孔１５を上向きに流れる潤滑油の量が下向きに流れる潤
滑油の量よりも多くなるように構成することもできる。In the above structure, the resistance of the bearing metal 11 portion and the support portion 26 portion against lubricating oil are appropriately set so that the amount of lubricating oil flowing upward through the passage hole 15 is greater than the amount of lubricating oil flowing downward. It can also be configured as follows.
そのようにすると、シリンダブロック１の上部や中間部
（すなわち受熱量の多い部分）を効果的に冷却すること
ができ。In this way, the upper and middle parts of the cylinder block 1 (that is, the parts receiving a large amount of heat) can be effectively cooled.
（発明の効果）
以上説明したように本発明によると、冷却用液体として
潤滑油を使用したので、水垢による冷却液通路の閉塞を
防止できる。(Effects of the Invention) As explained above, according to the present invention, since lubricating oil is used as the cooling liquid, it is possible to prevent the cooling liquid passage from being blocked by water scale.
又通路孔１５はシリンダ中心線４に沿って隔壁部７を真
っ直ぐに貫通する孔であるので、きり孔加工により極め
て簡単に形成できる。Furthermore, since the passage hole 15 is a hole that passes straight through the partition wall portion 7 along the cylinder centerline 4, it can be formed extremely easily by drilling.
更に図示の実施例の如く、冷却用の通路孔１５を軸受ボ
ス１２や弁腕支持部２６の潤滑油供給用油路に利用する
と、それらへの潤滑油供給のために専用の油路を設ける
必要がなく、全体構造を簡単化できる。Furthermore, as in the illustrated embodiment, when the cooling passage hole 15 is used as an oil passage for supplying lubricating oil to the bearing boss 12 and the valve arm support portion 26, a dedicated oil passage is provided to supply lubricating oil to them. This is not necessary and the overall structure can be simplified.
Claims (2)
並ぶように配置した多気筒直列エンジンにおいて、隣接
する２個のシリンダ間の隔壁部に、該隔壁部をシリンダ
中心線に沿って真っ直ぐに貫通する潤滑油通路孔を設け
、該潤滑油通路孔の入口をシリンダブロックの内部のメ
インギャラリに接続したことを特徴とする多気筒直列エ
ンジンの冷却構造。(1) In a multi-cylinder series engine in which a plurality of cylinders are arranged so that their center lines are lined up on the same plane, the partition wall between two adjacent cylinders should be aligned straight along the cylinder center line. 1. A cooling structure for a multi-cylinder in-line engine, characterized in that a lubricating oil passage hole is provided through the cylinder block, and an inlet of the lubricating oil passage hole is connected to a main gallery inside a cylinder block.
成し、潤滑油通路孔の一端の出口をシリンダブロックの
クランク軸用軸受ボスの内周面に開口させ、他端に出口
をシリンダヘッドの内部の貫通油路を介して弁腕支え台
の内部の弁腕用潤滑油通路に接続した特許請求の範囲第
１項に記載の多気筒直列エンジンの冷却構造。(2) The inlet of the lubricating oil passage hole is formed in the middle of the lubricating oil passage, the outlet of one end of the lubricating oil passage hole is opened on the inner peripheral surface of the crankshaft bearing boss of the cylinder block, and the outlet is formed at the other end. The cooling structure for a multi-cylinder series engine according to claim 1, wherein the cooling structure is connected to a valve arm lubricating oil passage inside the valve arm support via a penetrating oil passage inside the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24275786A JPS6397821A (en) | 1986-10-13 | 1986-10-13 | Cooling structure for multicylinder series engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24275786A JPS6397821A (en) | 1986-10-13 | 1986-10-13 | Cooling structure for multicylinder series engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6397821A true JPS6397821A (en) | 1988-04-28 |
Family
ID=17093813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24275786A Pending JPS6397821A (en) | 1986-10-13 | 1986-10-13 | Cooling structure for multicylinder series engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6397821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0491244U (en) * | 1990-12-25 | 1992-08-10 |
-
1986
- 1986-10-13 JP JP24275786A patent/JPS6397821A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0491244U (en) * | 1990-12-25 | 1992-08-10 |
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