JPH0441918A - Siamese type cylinder cooling device of liquid cooled multi-cylinder engine - Google Patents
Siamese type cylinder cooling device of liquid cooled multi-cylinder engineInfo
- Publication number
- JPH0441918A JPH0441918A JP14522190A JP14522190A JPH0441918A JP H0441918 A JPH0441918 A JP H0441918A JP 14522190 A JP14522190 A JP 14522190A JP 14522190 A JP14522190 A JP 14522190A JP H0441918 A JPH0441918 A JP H0441918A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cylinders
- cooling oil
- oil
- cooling
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 title description 2
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000001050 lubricating effect Effects 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
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)
- Lubrication 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、液冷多気筒エンジンのサイアミーズ形シリン
ダ冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a Siamese-type cylinder cooling device for a liquid-cooled multi-cylinder engine.
〈従来技術〉
本発明は、その基本構造として、例えば第１図及び第５
図に示すように、液冷多気筒エンジン１の液冷ジャケッ
ト２内で、前後に並ぶ複数本の７リフタ３同士をその隣
接部で一体に連続させてサイアミーズ形シリンダとして
形成し、シリンダ３に摺動自在に内嵌するピストン４に
冷却用オイル供給手段５により冷却用オイルを供給する
ように構成したものに関する。<Prior art> The basic structure of the present invention is as shown in FIGS. 1 and 5, for example.
As shown in the figure, within the liquid-cooled jacket 2 of the liquid-cooled multi-cylinder engine 1, a plurality of seven lifters 3 lined up front and back are integrally connected at their adjacent parts to form a Siamese-shaped cylinder. The present invention relates to a piston 4 that is configured to supply cooling oil to a piston 4 that is slidably fitted therein by a cooling oil supply means 5.
従来では、冷却用オイル供給手段５により冷却用オイル
を供給する箇所は、第５図に示すように、ピストン４の
内面であった。Conventionally, the location to which cooling oil was supplied by the cooling oil supply means 5 was the inner surface of the piston 4, as shown in FIG.
〈発明が解決しようとする課題〉 しかし、上記従来例では、次の問題がある。<Problem that the invention seeks to solve> However, the above conventional example has the following problem.
（１）サイアミーズ形シリンダではシリンダ同士間の連
続肉壁部分がそれ以外の部分と比べ高温になるため、従
来例のように、ピストンの内面に冷却用オイルを供給す
ることによりシリンダの周側壁全体を冷却するものでは
、冷却効果が小さく、上記連続肉壁部分で油温が上昇し
て、潤滑性能が低くなる。(1) In Siamese-type cylinders, the continuous wall between the cylinders becomes hotter than the other parts, so by supplying cooling oil to the inner surface of the piston, as in the conventional example, the entire circumferential wall of the cylinder is heated. If the oil is cooled, the cooling effect is small, and the oil temperature rises in the continuous wall portion, resulting in poor lubrication performance.
しかも、上記連続肉壁部分での冷却効果が小さいことか
ら、シリンダの上記連続肉壁部分とそれ以外の部分とで
温度落差が大きく、シリンダが大きく歪む。Moreover, since the cooling effect in the continuous wall portion is small, there is a large temperature drop between the continuous wall portion and other parts of the cylinder, and the cylinder is greatly distorted.
このため、スカッフや焼付きが起こり易く、エンジンの
許容最大出力が低くなる。Therefore, scuffing and seizure are likely to occur, and the maximum allowable output of the engine is reduced.
（２）上記スカッフや焼付きを抑制するために、上記連
続肉壁部分を厚くする必要がある。この場合には、エン
ジンの全長が長くなる。(2) In order to suppress the scuffing and seizure, it is necessary to thicken the continuous wall portion. In this case, the overall length of the engine becomes longer.
本発明は、上記問題を解決する事を課題とする。An object of the present invention is to solve the above problems.
く課題を解決するための手段〉
本発明は、上記課題を解決するため、例えば第１図に示
すように、次のように構成したものである。Means for Solving the Problems> In order to solve the above problems, the present invention is configured as follows, as shown in FIG. 1, for example.
即ち、冷却用オイル供給手段５は、シリンダ３とピスト
ン４との摺動面間のうち、シリンダ３同士が隣接部で一
体に連続する連続肉壁部分６に臨む箇所に冷却用オイル
を供給するように構成したものである。That is, the cooling oil supply means 5 supplies cooling oil to a portion between the sliding surfaces of the cylinder 3 and the piston 4 where the cylinders 3 face the continuous wall portion 6 where the cylinders 3 are adjacent to each other and continue integrally. It is configured as follows.
く作用〉 次に、作用を説明する。Effect〉 Next, the effect will be explained.
シリンダ３とピストン４との摺動面間のうち、シリンダ
３同士が隣接部で一体に連続する連続内壁部分６に臨む
箇所（第２図において、ｘｘｘ印で示す箇所）に冷却用
オイルが供給されて、上記連続肉壁部分６に臨む箇所を
多量の冷却用オイルで冷却できて、上記連続肉壁部分６
を強力に冷却することができる。このため、上記連続肉
壁部分６で油温が低くなり、潤滑性能が高くなる。Cooling oil is supplied to the area between the sliding surfaces of the cylinder 3 and the piston 4, where the cylinders 3 face the continuous inner wall part 6 where they are adjacent to each other (indicated by xxx marks in Figure 2). The portion facing the continuous wall portion 6 can be cooled with a large amount of cooling oil, and the portion facing the continuous wall portion 6 can be cooled with a large amount of cooling oil.
can be powerfully cooled. Therefore, the oil temperature becomes lower in the continuous wall portion 6, and the lubrication performance becomes higher.
しかも、上記連続肉壁部分６を強力に冷却することがで
きることから、シリンダ３の上記連続肉壁部分６とそれ
以外の部分との温度落差が小さくなり、シリンダ３の歪
が無くなる。Moreover, since the continuous wall portion 6 can be powerfully cooled, the temperature drop between the continuous wall portion 6 and other parts of the cylinder 3 is reduced, and distortion of the cylinder 3 is eliminated.
これにより、スカッフや焼付きが起こりにくい。This makes scuffing and seizure less likely to occur.
〈発明の効果〉
本発明は、上述のように構成され、作用することから、
次の効果を奏する。<Effects of the Invention> Since the present invention is configured and operates as described above,
It has the following effects.
（１）スカッフや焼付きが起こりに（いので、エンジン
の許容最大出力を高くすることができる。(1) Since scuffing and seizure do not occur, the maximum permissible output of the engine can be increased.
（２）上述のように、スカッフや焼付きが起こりにくい
ので、連続内壁部分を薄くできて、エンジンの全長を短
縮することができる。(2) As mentioned above, since scuffing and seizure are less likely to occur, the continuous inner wall portion can be made thinner and the overall length of the engine can be shortened.
〈実施例〉
本発明の実施例を、第１図乃至第４図に基づき説明する
。<Example> An example of the present invention will be described based on FIGS. 1 to 4.
本実施例では、エンジンは水冷（水冷に限るものではな
く、油冷でもよい。）の多気筒エンジン１であり、この
エンジンｌのシリンダは、シリンダブロック１６内に形
成した水冷ジャケット（液冷ジャケット）２内で、前後
２本のシリンダ３同士がその隣接部で一体に連続するサ
イアミーズ形シリンダとして、形成されている。In this embodiment, the engine is a water-cooled (not limited to water-cooled, oil-cooled) multi-cylinder engine 1, and the cylinders of this engine 1 have water-cooled jackets (liquid-cooled jackets) formed in the cylinder block 16. ) 2, the two front and rear cylinders 3 are formed as a Siamese-shaped cylinder that continues integrally at their adjacent portions.
両シリンダ３と両シリンダ３内を摺動するピストン４と
の摺動面間のうち、シリンダ３同士が隣接部で一体に連
続する連続肉壁部分６に臨む箇所（第２図において、ｘ
ｘｘ印で示す箇所）には、冷却用オイル供給手段５によ
り冷却用オイルが供給される。Between the sliding surfaces of both cylinders 3 and the piston 4 that slides inside both cylinders 3, the portion where the cylinders 3 face a continuous wall portion 6 that is adjacent to each other (x in Fig. 2)
Cooling oil is supplied to the locations indicated by xx marks) by the cooling oil supply means 5.
冷却用オイル供給手段５は、第３図に示すように、クラ
ンク軸７の軸受部８に付設されている。The cooling oil supply means 5 is attached to the bearing portion 8 of the crankshaft 7, as shown in FIG.
即ち、クランク軸７の軸受部８にオイル通路９及び噴射
口１０が形成され、オイル通路９へはオイルパン１１内
のオイルが潤滑ポンプ（図示路）等を介して圧送され、
噴射口ｉｏがら上記連続肉壁部分６に臨む箇所に向けて
冷却用オイルが噴射される。That is, an oil passage 9 and an injection port 10 are formed in the bearing part 8 of the crankshaft 7, and oil in an oil pan 11 is fed under pressure to the oil passage 9 via a lubricating pump (path shown) or the like.
Cooling oil is injected from the injection port io toward a location facing the continuous wall portion 6.
また、第２図に示すように、上記連続肉壁部分６には通
水路１２があけられており、この通水路１２内を水冷ジ
ャケット２の冷却水が流通する構造であり、この冷却水
の流通によっても上記連続肉壁部分６は冷却される。Further, as shown in FIG. 2, a water passage 12 is provided in the continuous wall portion 6, and the cooling water of the water cooling jacket 2 flows through this water passage 12. The continuous wall portion 6 is also cooled by the circulation.
第４図には別実施例が示されており、コンロッド１３、
ピストンピン１４にオイル通路９を形成し、ピストンピ
ン内部の孔１４ａを介して、ブラグ１４ｂにあけた吹出
し口１５から冷却用オイルを吹出すようにしたものであ
る。Another embodiment is shown in FIG. 4, in which a connecting rod 13,
An oil passage 9 is formed in the piston pin 14, and cooling oil is blown out from an outlet 15 formed in the plug 14b through a hole 14a inside the piston pin.
図中、符号７ａ・７ｂは軸受、１７はシリンダヘッドで
ある。In the figure, numerals 7a and 7b are bearings, and 17 is a cylinder head.
尚、上記実施例では、冷却用オイル供給手段５により、
上記連続肉壁部分６に臨む箇所を両方共冷却するように
しているが、片方だけを冷却するようにしてもよい。In the above embodiment, the cooling oil supply means 5 provides
Although both portions facing the continuous wall portion 6 are cooled, only one portion may be cooled.
第１図乃至第４図は本発明の実施例を示し、第１図はエ
ンジンの縦断側面図、第２図はシリンダブロックの横断
平面図、第３図は第１図Ａ部の拡大図、第４図は別実施
例を示す要部断面図であり、第５図は従来例を示す要部
断面図である。
１・・・・・・エンジン、２・・・・・・液冷ジャケッ
ト、３・・・・・・シリンダ、４・・・・・・ピストン
、５・・・・・・冷却用オイル供給手段、６・・・・・
・連続肉壁部分。
特許出願人 株式会社クボタ
第
１図
５図
−シ１１1 to 4 show embodiments of the present invention, in which FIG. 1 is a vertical side view of the engine, FIG. 2 is a cross-sectional plan view of the cylinder block, and FIG. 3 is an enlarged view of section A in FIG. FIG. 4 is a sectional view of a main part showing another embodiment, and FIG. 5 is a sectional view of a main part showing a conventional example. 1... Engine, 2... Liquid cooling jacket, 3... Cylinder, 4... Piston, 5... Cooling oil supply means , 6...
・Continuous flesh wall part. Patent applicant Kubota Co., Ltd. Figure 1 Figure 5-C11
Claims (1)
内で、前後に並ぶ複数本のシリンダ（３）同士をその隣
接部で一体に連続させてサイアミーズ形シリンダとして
形成し、 シリンダ（３）に摺動自在に内嵌するピストン（４）に
冷却用オイル供給手段（５）により冷却用オイルを供給
するように構成した液冷多気筒エンジンのサイアミーズ
形シリンダ冷却装置において、 冷却用オイル供給手段（５）は、シリンダ（３）とピス
トン（４）との摺動面間のうち、シリンダ（３）同士が
隣接部で一体に連続する連続肉壁部分（６）に臨む箇所
に冷却用オイルを供給するように構成した事を特徴とす
る液冷多気筒エンジンのサイアミーズ形シリンダ冷却装
置。[Claims] 1. Liquid-cooled jacket (2) of liquid-cooled multi-cylinder engine (1)
Inside, a plurality of cylinders (3) lined up front and back are connected together at their adjacent parts to form a Siamese-shaped cylinder, and a piston (4) that is slidably fitted inside the cylinder (3) is used for cooling. In a Siamese-type cylinder cooling device for a liquid-cooled multi-cylinder engine configured to supply cooling oil by an oil supply means (5), the cooling oil supply means (5) connects the cylinder (3) and the piston (4). A liquid-cooled multi-layer cooling system characterized in that cooling oil is supplied to a part between the sliding surfaces of the cylinders (3) facing a continuous wall part (6) where the cylinders (3) are adjacent to each other and continue integrally. Siamese cylinder cooling system for cylinder engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145221A JP2566838B2 (en) | 1990-06-01 | 1990-06-01 | Siamese type cylinder cooling system for liquid-cooled multi-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145221A JP2566838B2 (en) | 1990-06-01 | 1990-06-01 | Siamese type cylinder cooling system for liquid-cooled multi-cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0441918A true JPH0441918A (en) | 1992-02-12 |
| JP2566838B2 JP2566838B2 (en) | 1996-12-25 |
Family
ID=15380159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2145221A Expired - Fee Related JP2566838B2 (en) | 1990-06-01 | 1990-06-01 | Siamese type cylinder cooling system for liquid-cooled multi-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2566838B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013538974A (en) * | 2010-10-01 | 2013-10-17 | ダイムラー・アクチェンゲゼルシャフト | Internal combustion engine having a cylinder housing made from light cast metal and a cylinder body made from rough surface casting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52134944A (en) * | 1976-05-07 | 1977-11-11 | Fuji Heavy Ind Ltd | Piston for internal combustion engine |
| JPS63253156A (en) * | 1987-04-08 | 1988-10-20 | Daihatsu Motor Co Ltd | Cooling device for siamese type cylinder block |
| JPH01159120U (en) * | 1988-04-23 | 1989-11-02 |
-
1990
- 1990-06-01 JP JP2145221A patent/JP2566838B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52134944A (en) * | 1976-05-07 | 1977-11-11 | Fuji Heavy Ind Ltd | Piston for internal combustion engine |
| JPS63253156A (en) * | 1987-04-08 | 1988-10-20 | Daihatsu Motor Co Ltd | Cooling device for siamese type cylinder block |
| JPH01159120U (en) * | 1988-04-23 | 1989-11-02 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013538974A (en) * | 2010-10-01 | 2013-10-17 | ダイムラー・アクチェンゲゼルシャフト | Internal combustion engine having a cylinder housing made from light cast metal and a cylinder body made from rough surface casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2566838B2 (en) | 1996-12-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |