JPH0230916A - Cooling structure for liquid cooled type engine - Google Patents
Cooling structure for liquid cooled type engineInfo
- Publication number
- JPH0230916A JPH0230916A JP18071388A JP18071388A JPH0230916A JP H0230916 A JPH0230916 A JP H0230916A JP 18071388 A JP18071388 A JP 18071388A JP 18071388 A JP18071388 A JP 18071388A JP H0230916 A JPH0230916 A JP H0230916A
- Authority
- JP
- Japan
- Prior art keywords
- jacket
- cylinder
- liquid
- cooling
- wall
- 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 63
- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 239000000110 cooling liquid Substances 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 13
- 239000000498 cooling water Substances 0.000 description 13
- 239000002826 coolant Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 244000108452 Litchi chinensis Species 0.000 description 2
- 235000015742 Nephelium litchi Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000007789 sealing 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
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- 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
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば冷却水、冷却油等の冷却液によってシ
リンダボディ、シリンダヘッドを冷却するようにした液
冷式エンジンに関し、特にシリンダライナ。燃焼室廻り
を全体的に均一冷却できるようにした液冷ジャケットの
改善に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid-cooled engine in which a cylinder body and a cylinder head are cooled by a cooling fluid such as cooling water or cooling oil, and in particular to a cylinder liner. This invention relates to an improvement in a liquid cooling jacket that can uniformly cool the entire area around the combustion chamber.
例えば冷却水でシリンダボディを冷却するようにした水
冷エンジンとして、従来からシリンダライナの外周面と
シリンダボディの内周面との間に水冷ジャケットを形成
して、シリンダライナに冷却水が直接接触するように構
成したウェットライナ型のもの（例えば実公昭４３−４
８１１号公報参照）と、シリンダボディの壁内に水冷ジ
ャケットを形成して、シリンダライナに冷却水が直接接
触しないようにしたドライライナ型のもの（例えば実開
昭６０−１００５２４号公報参照）がある。For example, in a water-cooled engine that uses cooling water to cool the cylinder body, a water-cooling jacket is conventionally formed between the outer peripheral surface of the cylinder liner and the inner peripheral surface of the cylinder body, so that the cooling water comes into direct contact with the cylinder liner. A wet liner type constructed as shown in FIG.
811)) and a dry liner type in which a water cooling jacket is formed within the wall of the cylinder body to prevent the cooling water from coming into direct contact with the cylinder liner (see, for example, Japanese Utility Model Application No. 60-100524). be.
上記ドライライナ型のものでは、シリンダボディ壁を介
してシリンダライナを冷却することとなるからシリンダ
ライナの冷却性が低く、熱間時にシリンダライナの温度
が上昇し、それだけライナ径が変化し易いとともに、エ
ンジン全体で見たときの均一冷却性に劣る問題がある。In the dry liner type mentioned above, the cylinder liner is cooled through the cylinder body wall, so the cooling performance of the cylinder liner is low, and the temperature of the cylinder liner increases when it is hot, making it easier for the liner diameter to change. , there is a problem of poor uniform cooling performance when looking at the entire engine.
一方、ウェットライナ型のものでは、シリンダボディ、
シリンダライナ間のシール性を確保するためにシリンダ
剛性を向上させる必要があること、及びシリンダライナ
との間に形成された水冷ジャケットは高温の燃焼室を冷
却するヘッドジャケットへの多量の冷却水の通路でもあ
るから比較的大きな空間を必要とし、そのためにシリン
ダボディのライチ廻りの外径が大きくなることからシリ
ンダボディの重量が増加するとともに、組立性が低下す
るという問題がある。On the other hand, in the wet liner type, the cylinder body
It is necessary to improve the cylinder rigidity to ensure sealing between the cylinder liners, and the water cooling jacket formed between the cylinder liner and the cylinder liner allows a large amount of cooling water to flow into the head jacket to cool the high temperature combustion chamber. Since it is also a passage, it requires a relatively large space, and as a result, the outer diameter of the cylinder body around the lychee increases, which increases the weight of the cylinder body and reduces the ease of assembly.
本発明は上記従来の問題点を解決するためになされたも
ので、シリンダライナ、燃焼室廻りの均一冷却性を向上
できるとともに、重量増加の問題が生じることもない液
冷式エンジンの冷却構造を提供することを目的としてい
る。The present invention was made in order to solve the above-mentioned conventional problems, and provides a cooling structure for a liquid-cooled engine that can improve uniform cooling around the cylinder liner and combustion chamber, and eliminates the problem of increased weight. is intended to provide.
〔問題点を解決するための手段〕
本発明は、液冷式エンジンの冷却構造において、シリン
ダボディの内周面とシリンダライナの外周面とで第】液
冷ジャケットを形成し、シリンダボディの壁内に上記第
１液冷ジャケットを囲み、かつこれより幅の広い第２液
冷ジャケットを形成し、該第２液冷ジャケットをシリン
ダヘッドの燃焼室廻りに形成されたヘッドジャケットに
連通させるとともに、該第２液冷ジャケットと上記第１
液冷ジャケットとを複数の連通孔で連通させたことを特
徴としている。[Means for Solving the Problems] The present invention provides a cooling structure for a liquid-cooled engine in which the inner circumferential surface of the cylinder body and the outer circumferential surface of the cylinder liner form a liquid cooling jacket, and the wall of the cylinder body forming a second liquid cooling jacket that surrounds the first liquid cooling jacket and having a wider width than the first liquid cooling jacket, and communicating the second liquid cooling jacket with a head jacket formed around the combustion chamber of the cylinder head; the second liquid cooling jacket and the first
It is characterized by communicating with the liquid cooling jacket through a plurality of communication holes.
ここで本発明の第１液冷ジャケットは、比較的温度の低
いシリンダライナを冷却するだけでよいから幅の狭いも
ので済み、また外周を囲む第２液冷ジャケットから冷却
されるからこの点からも狭い幅で済む、一方、第２液冷
ジャケットは高温のヘッドジャケットに多量の冷却液を
供給するための通路となるから、流路抵抗が高くならな
いよう幅広に形成する必要がある。Here, since the first liquid cooling jacket of the present invention only needs to cool the cylinder liner, which has a relatively low temperature, it can be narrow in width, and from this point of view, since the first liquid cooling jacket of the present invention is cooled from the second liquid cooling jacket surrounding the outer periphery. On the other hand, since the second liquid cooling jacket serves as a passage for supplying a large amount of cooling liquid to the high-temperature head jacket, it needs to be formed wide so as not to increase the flow resistance.
本発明に係る冷却構造によれば、冷却ジャケットを、シ
リンダライナに冷却液を直接接触させる第１液冷ジャケ
ットと、ヘッドジャケットに多量の冷却液を流入させる
第２液冷ジャケットとからなる２重構造したので、第１
液冷ジャケットは比較的低温のシリンダライナを冷却す
るだけで済み、ジャケット幅を狭くし、かつ少量の冷却
液で必要充分に冷却できる。また高温の燃焼室廻りは多
量の冷却液を供給して充分に冷却でき、その結果エンジ
ン全体の均一冷却性が向上する。According to the cooling structure according to the present invention, the cooling jacket is made up of a double layer consisting of the first liquid cooling jacket that brings the coolant into direct contact with the cylinder liner and the second liquid cooling jacket that allows a large amount of the coolant to flow into the head jacket. Since the structure was established, the first
The liquid cooling jacket only needs to cool the relatively low-temperature cylinder liner, the jacket width can be narrowed, and a small amount of cooling liquid can provide sufficient cooling. Furthermore, the area around the high-temperature combustion chamber can be sufficiently cooled by supplying a large amount of coolant, resulting in improved uniform cooling throughout the engine.
そしてこの場合、第１液冷ジャケットは上述のウェット
ライナ型のものに比較して極めて幅の狭いもので済む、
従ってシリンダボディのシリンダライナ廻りの外径は従
来のドライライチ型のものとあまり変わらないから、第
１液冷ジャケットを設けたことによりシリンダボディの
重量増加が生じることはほとんどない。In this case, the first liquid cooling jacket only needs to be extremely narrow compared to the wet liner type described above.
Therefore, since the outer diameter of the cylinder body around the cylinder liner is not much different from that of the conventional dry lychee type, the provision of the first liquid cooling jacket hardly causes an increase in the weight of the cylinder body.
以下、本発明の実施例を図について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図ないし第４図は本発明の一実施例による水冷式エ
ンジンの冷却構造を説明するための図である。1 to 4 are diagrams for explaining a cooling structure of a water-cooled engine according to an embodiment of the present invention.
図において、１は本実施例冷却構造が採用された４サイ
クルエンジンであり、これはクランクケース２上にシリ
ンダボディ３．シリンダへラド４及びヘッドカバー５を
順次積み重ねて構成されている。上記シリンダボディ３
内には２本のビスｌンリングを備えたピストン６が摺動
自在に挿入されており、これはコンロフト７でクランク
軸８に連結されている。また上記シリンダヘッド４の下
面には上記ピストン６とで燃焼室４ａが形成されており
、該燃焼室４ａに連通ずる吸気ボート４ｂ。In the figure, reference numeral 1 designates a four-stroke engine in which the cooling structure of this embodiment is adopted, which has a cylinder body 3 on a crankcase 2. It is constructed by sequentially stacking a cylinder 4 and a head cover 5. Above cylinder body 3
A piston 6 equipped with two screw rings is slidably inserted therein, and is connected to a crankshaft 8 at a connecting loft 7. Further, a combustion chamber 4a is formed on the lower surface of the cylinder head 4 together with the piston 6, and an intake boat 4b communicates with the combustion chamber 4a.
排気ポー）４ｃの燃焼室側開口には吸気弁９ａ。An intake valve 9a is provided at the combustion chamber side opening of the exhaust port 4c.
排気弁９ｂが配設されている。該答弁９ａ、９ｂは該シ
リンダヘッド４の上部に配置され、ヘッドカバー５で覆
われた動弁装置で開閉駆動される。An exhaust valve 9b is provided. The response valves 9a and 9b are arranged above the cylinder head 4 and are driven to open and close by a valve train covered with a head cover 5.
そして上記シリンダボディ３は、平面視略矩形筒状の外
壁３ａの中央にカム軸駆動角力ムチェンが配置される矩
形筒状のチェン室３ｂを、該チェン室３ｂの左、右外側
に円筒状のシリンダ壁３Ｃをそれぞれ２個づつ一体形成
して構成されている。The cylinder body 3 has a rectangular cylindrical chain chamber 3b in which a camshaft drive angular force chain is arranged at the center of an outer wall 3a which is generally rectangular in plan view, and cylindrical chambers 3b on the left and right outer sides of the chain chamber 3b. Two cylinder walls 3C are each integrally formed.
この左、右の両シリンダ壁３Ｃ同士は対向部が一体的に
接続され、かつ該接続部には連通孔３ｈが形成されてい
る。また各シリンダ壁３Ｃと外壁３ａとの底部は閉塞さ
れ、上端部は開口しており、該開口部は接続リブ３ｄで
接続されている。そしてこのシリンダ壁３Ｃと上記外壁
３ａとの間の空間は、第２液冷ジャケットとしての主ジ
ャケット１０ａとなっている。そして該シリンダボディ
３の外壁３ａの、後側（気化器側−第１図下側）には給
水口３ｇが上記主ジャケット１０ａに連通ずるように形
成されている。また該シリンダボディ３とシリンダヘッ
ド４との間に介設されたシール用パツキン１２の前側（
排気側−第１図上側）には連通口１２ａが形成されてお
り、これによりこの主ジャケット、１０ａはシリンダへ
ラド４に形成されたヘッドジャケット４ｄに連通してい
る。The left and right cylinder walls 3C are integrally connected at opposing portions, and a communication hole 3h is formed in the connecting portion. Further, the bottoms of each cylinder wall 3C and the outer wall 3a are closed, and the tops thereof are open, and the openings are connected by a connecting rib 3d. The space between the cylinder wall 3C and the outer wall 3a serves as a main jacket 10a as a second liquid cooling jacket. A water supply port 3g is formed on the rear side (carburizer side - lower side in FIG. 1) of the outer wall 3a of the cylinder body 3 so as to communicate with the main jacket 10a. Also, the front side (
A communication port 12a is formed on the exhaust side (upper side in FIG. 1), and this main jacket 10a communicates with a head jacket 4d formed on the cylinder rad 4.
そして上記シリンダ壁３Ｃの内周面の高さ方向略中夫に
は、凹部３ｅが形成されており、該凹部３ｅの下方には
オーリング溝３１が形成され、オーリング１３が装着さ
れている。またこのシリンダ壁３Ｃ内には、鋳鉄製で円
筒状のシリンダライナ１１が圧入されており、該ライナ
１１の上端フランジ部１１ａが上記シリンダ壁３Ｃの上
端面に係止している。また該ライナ１１の下部には上記
オーリング１３が当接しており、これにより該シリンダ
ライナ１１の胴部１１ｂと上記凹部３ｅとの隙間が第１
液冷ジャケットとしての副ジャケット１０ｂとなってい
る。この副ジャケット１０ｂは上記主ジャケット１０ａ
によって囲まれている。A recess 3e is formed approximately in the height direction of the inner peripheral surface of the cylinder wall 3C, and an O-ring groove 31 is formed below the recess 3e, into which the O-ring 13 is mounted. . Further, a cylindrical cylinder liner 11 made of cast iron is press-fitted into the cylinder wall 3C, and the upper end flange portion 11a of the liner 11 is locked to the upper end surface of the cylinder wall 3C. Further, the O-ring 13 is in contact with the lower part of the liner 11, so that the gap between the body portion 11b of the cylinder liner 11 and the recess 3e is reduced to a first level.
The sub-jacket 10b serves as a liquid cooling jacket. This secondary jacket 10b is the main jacket 10a.
surrounded by
また、シリンダ壁３Ｃの吸気側２箇所、排気側２箇所の
上部には、比較的小径の連通孔３ｆが形成されており、
これにより上記副ジャケット１０ｂは主ジャケット１０
ａに連通している。In addition, relatively small-diameter communication holes 3f are formed in the upper portions of the cylinder wall 3C at two locations on the intake side and two locations on the exhaust side.
As a result, the secondary jacket 10b is changed to the main jacket 10.
It is connected to a.
次に本実施例の作用効果について説明する。Next, the effects of this embodiment will be explained.
本実施例冷却構造では、ラジェータから戻ってきた冷却
水は、循環ポンプによってシリンダボディ３に、これの
後壁（吸気側）に形成された給水口３ｇから供給される
。この冷却水の大部分は、外壁３ａとシリンダ壁３Ｃと
の間の主ジャケット１０ａを通って前側（排気側）に流
れ、ガスケット１２の排気側に形成された連通口１２ａ
を通ってシリンダヘッド４のヘッドジャケット４ｄに流
入する。そして冷却水の一部は主ジャケット１０ａから
吸気側の連通孔３ｆを遣って副ジャケット１０ｂ内に流
入し、該ジャケラ）１０ｂ内を排気側に流れ、排気側の
連通孔３ｆから主ジャケットｔＯａ内に流出する。そし
てこれらの冷却水は図示しない排水口からサーモスタッ
ト弁を介してラジェータに送られることとなる。In the cooling structure of this embodiment, the cooling water returned from the radiator is supplied to the cylinder body 3 from a water supply port 3g formed on the rear wall (intake side) of the cylinder body 3 by a circulation pump. Most of this cooling water flows to the front side (exhaust side) through the main jacket 10a between the outer wall 3a and the cylinder wall 3C, and a communication port 12a formed on the exhaust side of the gasket 12.
It flows into the head jacket 4d of the cylinder head 4 through the cylinder head 4. A part of the cooling water flows from the main jacket 10a into the sub-jacket 10b through the intake-side communication hole 3f, flows through the jacket 10b to the exhaust side, and flows from the exhaust-side communication hole 3f into the main jacket tOa. leaks into These cooling waters are then sent to the radiator from a drain port (not shown) via a thermostatic valve.
このように本実施例構造では、シリンダライナ１１の周
囲に副ジャケット１０ｂを形成して冷却水を直接シリン
ダライナ１１に接触させるようにしたので、シリンダラ
イナ１１を均一に冷却できる。また−触に複数気筒エン
ジンでは隣接する気筒の境界部分に冷却水が供給されに
りく、該部分の冷却性がよくないが、本実施例では、該
境界壁部分も上記副ジャケット１０ｂによって冷却され
、これらの結果、熱間運転時においてもライナ径が変化
することがない、また、本実施例では、このようにライ
ナ径の変化があまりないことから、潤滑油消費量を、ピ
ストンリングが２本だけであるにもかかわらず、従来の
３本リングの場合と略同量にすることができる。In this manner, in the structure of this embodiment, the sub-jacket 10b is formed around the cylinder liner 11 to bring the cooling water into direct contact with the cylinder liner 11, so that the cylinder liner 11 can be cooled uniformly. Furthermore, in a multi-cylinder engine, it is difficult to supply cooling water to the boundary between adjacent cylinders, and the cooling performance of this area is not good, but in this embodiment, the boundary wall is also cooled by the sub-jacket 10b. As a result, the liner diameter does not change even during hot operation, and in this example, since the liner diameter does not change much, the lubricating oil consumption can be reduced by 2. Even though it is only a book, it can be used in approximately the same amount as the conventional three-ring case.
そして上記副ジャケッ）１０ｂを比較的幅の狭いものと
し、これを囲むように幅の広い主ジャケット１０ａを形
成し、両ジャケット１０ａ、１０ｂを小径の連通孔３ｆ
で連通させたので、冷却水はその大部分が該主ジャケッ
ト１０ａを通ってヘッドジャケット４ｄに流入し、その
一部が副ジャケット１０ｂに流入することとなり、高温
の燃焼室廻りを冷却するヘッドジャケット４ｄに多量の
冷却水を供給でき、この燃焼室廻りも充分に冷却できる
。その結果、シリンダライナ１１の均一冷却、燃焼室廻
りの充分な冷却が実現でき、つまりエンジン全体を均一
に冷却できる。The sub-jacket 10b is made relatively narrow, and a wide main jacket 10a is formed to surround it, and both jackets 10a and 10b are connected to a small-diameter communication hole 3f.
Since most of the cooling water flows through the main jacket 10a and flows into the head jacket 4d, a part of it flows into the sub-jacket 10b, which cools the area around the high-temperature combustion chamber. A large amount of cooling water can be supplied to the combustion chamber 4d, and the area around the combustion chamber can be sufficiently cooled. As a result, uniform cooling of the cylinder liner 11 and sufficient cooling around the combustion chamber can be realized, that is, the entire engine can be uniformly cooled.
また、水冷ジャケットを上記副ジャケフ）１０ｂ、主ジ
ャケット１０ａの２重ジャケットとしたので、副ジャケ
ット１０ｂは極めて幅の狭いもので済み、上述のウェッ
トライナ型のものに比較して該ジャケット部分の半径が
小さくて済むとともに、必要剛性もそれほど高くない、
従ってシリンダボディの重量増加の問題もほとんど生じ
ない。In addition, since the water cooling jacket is a double jacket consisting of the secondary jacket 10b and the main jacket 10a, the width of the secondary jacket 10b can be extremely narrow, and the radius of the jacket portion is smaller than that of the wet liner type described above. is small, and the required rigidity is not so high.
Therefore, there is almost no problem of increased weight of the cylinder body.
なお、上記実施例では水冷式エンジンについて説明した
が、本発明は勿論、冷却液として油等の他の液体を使用
するエンジンにも通用できる。Although the above embodiments have been described with respect to a water-cooled engine, the present invention is of course applicable to engines that use other liquids such as oil as the coolant.
以上のように本発明に係る液冷式エンジンの冷却構造に
よれば、シリンダライナとシリンダボディとの境界に第
１液冷ジャケットを、これの外側に幅広の第２液冷ジャ
ケットを形成し、該第２液冷ジャケットをシリンダヘッ
ドのヘッドジャケットに連通させるとともに、第１．第
２液冷ジャケットを連通させたので、シリンダライナを
少量の冷却液で効率良く冷却でき、燃焼室に多量の冷却
液を供給して充分に冷却でき、エンジン全体を均一に冷
却できる効果があり、また第１液冷ジャケットは幅の狭
いもので済むので、シリンダボディ全体の重量増加が生
じることもない。As described above, according to the cooling structure for a liquid-cooled engine according to the present invention, the first liquid-cooling jacket is formed at the boundary between the cylinder liner and the cylinder body, and the wide second liquid-cooling jacket is formed outside of this, The second liquid cooling jacket communicates with the head jacket of the cylinder head, and the first liquid cooling jacket communicates with the head jacket of the cylinder head. Since the second liquid cooling jacket is connected, the cylinder liner can be efficiently cooled with a small amount of coolant, and a large amount of coolant can be supplied to the combustion chamber for sufficient cooling, which has the effect of uniformly cooling the entire engine. Moreover, since the first liquid cooling jacket can be narrow in width, there is no increase in the weight of the entire cylinder body.
第１図ないし第４図は本発明の一実施例による水冷式エ
ンジンの冷却構造を説明するための図であり、第１図は
そのシリンダボディの一部断面平面図、第２図、第３図
は第１図の■−■線断面図。
ｍ−ｍ線断面図、第４図は該実施例が適用されたエンジ
ンの一部断面側面図である。
図において、１は水冷式エンジン、３はシリンダボディ
、３ｅはシリンダボディの凹部、３ｆは第２液冷ジャケ
ットと第１液冷ジャケットとの連通孔、４はシリンダヘ
ッド、４ｄはヘッドジャケット、１０ａは主ジャケット
（第２液冷ジヤケツ））、１０ｂは副ジャケット（第１
液冷ジャケット）、１１はシリンダライナ、１２ａは第
２液冷ジャケットとヘッドジャケットとの連遣口である
。
特許出願人 ヤマハ発動機株式会社
代理人 弁理士 下車 努
第２図
；」
第
図
ら1 to 4 are diagrams for explaining the cooling structure of a water-cooled engine according to an embodiment of the present invention, in which FIG. 1 is a partial cross-sectional plan view of the cylinder body, FIG. The figure is a sectional view taken along the line ■-■ in FIG. FIG. 4 is a partially sectional side view of an engine to which this embodiment is applied. In the figure, 1 is a water-cooled engine, 3 is a cylinder body, 3e is a recess in the cylinder body, 3f is a communication hole between the second liquid cooling jacket and the first liquid cooling jacket, 4 is a cylinder head, 4d is a head jacket, 10a 10b is the main jacket (second liquid cooling jacket), and 10b is the sub jacket (first liquid cooling jacket).
(liquid cooling jacket), 11 is a cylinder liner, and 12a is a connection port between the second liquid cooling jacket and the head jacket. Patent Applicant Yamaha Motor Co., Ltd. Agent Patent Attorney Tsutomu Tsutomu Figure 2;
Claims (1)
ャケット内に冷却液を供給するようにした液冷式エンジ
ンの冷却構造において、シリンダボディの内周面に形成
された凹部とシリンダライナの外周面とで第１液冷ジャ
ケットを形成し、シリンダボディの壁内に上記第１液冷
ジャケットを囲み、かつこれより幅の広い第２液冷ジャ
ケットを形成し、該第２液冷ジャケットをシリンダヘッ
ドに形成されたヘッドジャケットに連通させるとともに
、該第２液冷ジャケットと上記第１液冷ジャケットとを
連通孔で連通させたことを特徴とする液冷式エンジンの
冷却構造。(1) In a cooling structure for a liquid-cooled engine in which a liquid cooling jacket is formed on the cylinder body and cooling liquid is supplied into the jacket, a recess formed on the inner peripheral surface of the cylinder body and the outer periphery of the cylinder liner a second liquid cooling jacket surrounding the first liquid cooling jacket and having a wider width within the wall of the cylinder body; A cooling structure for a liquid-cooled engine, characterized in that the second liquid-cooled jacket and the first liquid-cooled jacket are communicated with each other through a communication hole, and the second liquid-cooled jacket is communicated with a head jacket formed in a head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63180713A JP2715307B2 (en) | 1988-07-20 | 1988-07-20 | Liquid-cooled engine cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63180713A JP2715307B2 (en) | 1988-07-20 | 1988-07-20 | Liquid-cooled engine cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230916A true JPH0230916A (en) | 1990-02-01 |
| JP2715307B2 JP2715307B2 (en) | 1998-02-18 |
Family
ID=16088015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63180713A Expired - Fee Related JP2715307B2 (en) | 1988-07-20 | 1988-07-20 | Liquid-cooled engine cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2715307B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297033A (en) * | 2011-08-30 | 2011-12-28 | 郑光升 | Non-carbon deposition engine |
| JP2014521866A (en) * | 2011-07-29 | 2014-08-28 | アカーテース パワー，インク． | Cylinder collision cooling in opposed piston engines. |
| CN104696092A (en) * | 2013-12-10 | 2015-06-10 | 斯太尔动力有限责任公司 | An integral cylinder body of liquid-cooled type internal combustion engine and a mould for manufacturing thereof |
| CN110821703A (en) * | 2018-08-10 | 2020-02-21 | 重庆科克发动机技术有限公司 | Cylinder body cooling water channel structure of opposed engine |
| RU209540U1 (en) * | 2020-07-13 | 2022-03-17 | Пауэрхаус Энджин Солюшнз Свитселанд АйПи Холдинг ГмбХ | Internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596341A (en) * | 1979-01-13 | 1980-07-22 | Hino Motors Ltd | Cylinder block |
| JPS5643440U (en) * | 1979-09-12 | 1981-04-20 |
-
1988
- 1988-07-20 JP JP63180713A patent/JP2715307B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596341A (en) * | 1979-01-13 | 1980-07-22 | Hino Motors Ltd | Cylinder block |
| JPS5643440U (en) * | 1979-09-12 | 1981-04-20 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014521866A (en) * | 2011-07-29 | 2014-08-28 | アカーテース パワー，インク． | Cylinder collision cooling in opposed piston engines. |
| CN102297033A (en) * | 2011-08-30 | 2011-12-28 | 郑光升 | Non-carbon deposition engine |
| CN104696092A (en) * | 2013-12-10 | 2015-06-10 | 斯太尔动力有限责任公司 | An integral cylinder body of liquid-cooled type internal combustion engine and a mould for manufacturing thereof |
| CN110821703A (en) * | 2018-08-10 | 2020-02-21 | 重庆科克发动机技术有限公司 | Cylinder body cooling water channel structure of opposed engine |
| CN110821703B (en) * | 2018-08-10 | 2021-04-23 | 重庆科克发动机技术有限公司 | Cylinder body cooling water channel structure of opposed engine |
| RU209540U1 (en) * | 2020-07-13 | 2022-03-17 | Пауэрхаус Энджин Солюшнз Свитселанд АйПи Холдинг ГмбХ | Internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2715307B2 (en) | 1998-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4984539A (en) | Liquid cooled internal combustion engine | |
| JP2575807B2 (en) | Cylinder head cooling structure for 4-cycle engine | |
| US6295963B1 (en) | Four cycle engine for a marine propulsion system | |
| JPH0719106A (en) | Cooling structure for four-cycle engine | |
| US4805563A (en) | Block construction of engine | |
| JPH0230916A (en) | Cooling structure for liquid cooled type engine | |
| JP2516800B2 (en) | Multi-cylinder engine cooling system | |
| JP3824832B2 (en) | Cylinder head of internal combustion engine | |
| JP3885260B2 (en) | Engine cooling system | |
| JPS61265343A (en) | Cooling device for internal-combustion engine | |
| JP2514165Y2 (en) | Engine cylinder block | |
| JP3156210B2 (en) | Water-cooled engine cooling structure | |
| JP3885259B2 (en) | Engine cooling system | |
| JPS61160548A (en) | Body of internal-combustion engine | |
| JPH0566219U (en) | Cooling device for cylinder block in engine | |
| JPH02301613A (en) | Liquid-cooled engine | |
| JPH0571416A (en) | Cooling water passage structure for multiple cylinder internal combustion engine | |
| JP2550825Y2 (en) | Cooling water passage for water-cooled engine | |
| JPS61241442A (en) | Cylinder block cooling mechanism for internal-combustion engine | |
| JP2023113195A (en) | Cylinder head of internal combustion engine | |
| JPS6023483Y2 (en) | cylinder block of internal combustion engine | |
| JPH0337360A (en) | Cylinder block | |
| JP2513809Y2 (en) | Cylinder liner cooling structure | |
| JPS5852344Y2 (en) | 3-valve cylinder head | |
| JPH02115518A (en) | Cylinder head cooler for two-cylinder air cooled engine using liquid cooling jointly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |