JPS61187508A - Oil cooler of outboard engine - Google Patents

Oil cooler of outboard engine

Info

Publication number
JPS61187508A
JPS61187508A JP60029082A JP2908285A JPS61187508A JP S61187508 A JPS61187508 A JP S61187508A JP 60029082 A JP60029082 A JP 60029082A JP 2908285 A JP2908285 A JP 2908285A JP S61187508 A JPS61187508 A JP S61187508A
Authority
JP
Japan
Prior art keywords
cooling water
oil pan
case
water chamber
engine
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
Application number
JP60029082A
Other languages
Japanese (ja)
Inventor
Kisao Yunoki
柚木 喜佐雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP60029082A priority Critical patent/JPS61187508A/en
Publication of JPS61187508A publication Critical patent/JPS61187508A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002Cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00Liquid cooling
    • F01P3/20Cooling circuits not specific to a single part of engine or machine
    • F01P3/202Cooling circuits not specific to a single part of engine or machine for outboard marine engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To enable lubricating oil in an oil pan to be easily further surely cooled, by providing a cooling water chamber being brought into contact with a peripheral wall of the oil pan and opening an inlet hole of said cooling water chamber to a case wall in an underwater immersed part toward the advance direction of a ship body. CONSTITUTION:A driving unit case 1 mounts to its upper part an engine 5 through an engine mount 4. And said case 1 forms in its upper case 2 an oil pan 7 of the engine 5 in the front side of an exhaust and drain passage 20. Here a cavity part, brought into contact with the side of a front wall 8 of the oil pan 7, is partitioned by a partitioning member 15 in a position in the vicinity of an upper end part, forming the upper halved part to a cooling water chamber 16 brought into contact with a front wall 9 of the oil pan 7. And the cooling water chamber 16 forms in its bottom end part an inlet hole 18, opening in the advance direction of a ship body further tilting downward toward the front by an angle alpha, in the front wall part of a lower case 3 immersed in the seawater.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、ドライブユニットのケースにエンジンのオ
イルパンを形成した船外機のオイルクーラーに関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil cooler for an outboard motor in which an engine oil pan is formed in a drive unit case.

従来の技術 エンジンのオイルパンをドライブユニットのケース内に
形成したものは従来公知である(例えば実公昭41−2
0113号公報参照)。一方、エンジンの高出力化を図
るためには、潤滑油の温度上昇を防止するためオイルク
ーラーが必要になる。
Conventional Technology Engines in which the oil pan of an engine is formed within the case of a drive unit are conventionally known (for example, in Japanese Utility Model Publication No. 41-2).
(See Publication No. 0113). On the other hand, in order to increase the output of the engine, an oil cooler is required to prevent the temperature of the lubricating oil from rising.

従来においては、このような潤滑油の冷却は専用のオイ
ルクーラーで行なっている(例えば特公昭41−569
4号公報参照)。或いは前記実公昭41−20113号
公報のように、エンジンへ供給する冷却水によってオイ
ルパン部分を冷却するようにしたものもある。
Conventionally, such cooling of lubricating oil has been carried out using a dedicated oil cooler (for example, Japanese Patent Publication No. 41-569).
(See Publication No. 4). Alternatively, as in the above-mentioned Japanese Utility Model Publication No. 41-20113, there is also a system in which the oil pan portion is cooled by the cooling water supplied to the engine.

発明が解決しようとする問題点 しかしながら、上記の如く専用のオイルクーラーによっ
て強制冷却を行なうものにおいては、オイルクーラー用
の冷却水ポンプやクーラ一本体更には冷却水のための特
別の通路等が必要となり、部品点数が増加し全体として
コストが大幅に上昇する欠点がある。また、重量が増大
するとともに、前記冷却水ポンプはエンジンの出力軸よ
って駆動するためロス馬力も多く、更にはメンテナンス
が複雑となって故障の頻度も当然多くなるという欠点が
ある。また、エンジンの冷却水によってオイルパン部を
冷却する場合でも、充分な冷却率を得るためには冷却水
ポンプの容量を大きくしなければならないし、該エンジ
ンの冷却水通路をこのオイルパン壁に接して形成するよ
う変更しなければならないから、ケース自体を大幅に変
更しなければならない欠点がある。この発明はかかる欠
点を解消して、構造が簡単でかつケース全体の構造を大
幅に変更する必要のない簡挑なオイルクーラーを提供す
ることを目的としている。
Problems to be Solved by the Invention However, in the case where forced cooling is performed using a dedicated oil cooler as described above, a cooling water pump for the oil cooler, a cooler body, and a special passage for the cooling water are required. Therefore, there is a drawback that the number of parts increases and the overall cost increases significantly. In addition, the weight increases, and since the cooling water pump is driven by the output shaft of the engine, there is a large horsepower loss, and furthermore, maintenance becomes complicated and failures occur more frequently. Furthermore, even when cooling the oil pan using engine cooling water, the capacity of the cooling water pump must be increased in order to obtain a sufficient cooling rate, and the engine cooling water passage must be connected to the oil pan wall. Since it has to be changed so that they are formed in contact with each other, there is a drawback that the case itself has to be changed significantly. The object of the present invention is to eliminate such drawbacks and provide a simple oil cooler that has a simple structure and does not require major changes to the entire structure of the case.

問題点を解決するための手段 このような目的を達成するため、この発明では、ドライ
ブユニットのケース(11にエンジン(5)のオイルパ
ン(7)を有する船外機において、このオイルパン(7
)の周壁(9)に接して冷却水室(16)を設け、この
冷却水室(16)の入口穴(18)を水中浸漬部におけ
る前記ケース(1)の壁部に船体進行方向に向けて開口
したことを特徴とするものである。
Means for Solving the Problems In order to achieve such an object, the present invention provides an outboard motor having an oil pan (7) of the engine (5) in the case (11) of the drive unit.
) A cooling water chamber (16) is provided in contact with the peripheral wall (9) of the cooling water chamber (16), and the inlet hole (18) of the cooling water chamber (16) is oriented toward the wall of the case (1) in the underwater immersion section in the direction of hull movement. It is characterized by having an opening.

作  用 航走時においては、その船速によって入口穴(1日)か
ら自動的に冷却水が冷却水室(16)内に供給され、こ
れによってオイルパン(7)内の潤滑油を冷却する。
During cruising, cooling water is automatically supplied into the cooling water chamber (16) from the inlet hole (1) depending on the ship's speed, thereby cooling the lubricating oil in the oil pan (7). .

実施例 以下、この発明の実施例を図示の実施例に基づいて説明
すると、第1図において、+11は、アッパケース(2
)とロアケース(3)とからなるドライブユニットケー
スであり、このドライブユニットケース(1)の上部に
、工、ンジンマウント(4)を介してエンジン(5)が
搭載されている。また、このエンジン(5)は、カウリ
ング(6)によって覆われている。
Embodiments Below, embodiments of the present invention will be explained based on the illustrated embodiments. In FIG. 1, +11 is the upper case (2
) and a lower case (3), and an engine (5) is mounted on the top of this drive unit case (1) via an engine mount (4). Further, this engine (5) is covered by a cowling (6).

ドライブユニットケース(11には、上記アッパケース
(2)からロアケース(3)の上半部の部分へ跨って、
その後部に排気排水通路(20)が形成されている。
The drive unit case (11) includes a drive unit case (11) that spans from the upper case (2) to the upper half of the lower case (3).
An exhaust drainage passage (20) is formed at the rear thereof.

そして、アッパケース(2)内には、この排気排水通路
(20)の前部側においてエンジン(5)のオイルパン
(7)が形成されている。(8)は、該オイルパン(7
)内の潤滑油を吸上げてエンジン(5)側へ供給する潤
滑油供給管である。前記オイルパン(7)の前部壁(9
)に接するドライブユニットケース(11の前部空洞部
には、その上端をエンジン(5)のクランク軸(図示せ
ず)へ連結したドライブ軸(10)が内装され、このド
ライブ軸(10)の下端は、ロアケース(3)内におい
てプロペラ軸(23)へ連動連結される。更に、このド
ライブ軸(10)の途中には、ロアケース(3)との接
合部境界部分において冷却水ポンプ(11)が取付けら
れ、アッパケース(2)の取入口(図示せず)より吸上
げた冷却水は、前記空洞部内に内装した冷却水供給管(
12)から、エンジン(5)の冷却水取入口側へ供給す
るようにしている。(13)は、前記ドライブ軸(10
)とプロペラ軸(23)間のクラッチ機構(14)を操
作するためのシフトロッドであって、このシフトロッド
(13)は、その上端がアッパケース(2)よりも上方
において、図示していない操作レバーへ連結されるとと
もに、その下端はアッパケース(2)の上下方向の中間
部において、その前部に形成した段部より該アッパケー
ス+21内に入り、更にロアケース(3)内において、
前記クラッチ機構(14)側へ延長されている。
An oil pan (7) for the engine (5) is formed in the upper case (2) on the front side of the exhaust drainage passage (20). (8) is the oil pan (7).
) is a lubricating oil supply pipe that sucks up the lubricating oil in the engine (5) and supplies it to the engine (5) side. The front wall (9) of the oil pan (7)
) A drive shaft (10) whose upper end is connected to the crankshaft (not shown) of the engine (5) is housed in the front cavity of the drive unit case (11) that is in contact with the drive unit case (11). is interlocked and connected to the propeller shaft (23) within the lower case (3).Furthermore, a cooling water pump (11) is installed in the middle of the drive shaft (10) at the boundary of the joint with the lower case (3). The cooling water sucked up from the intake port (not shown) of the upper case (2) is supplied to the cooling water supply pipe (not shown) installed in the cavity.
12) to the cooling water intake side of the engine (5). (13) is the drive shaft (10
) and the propeller shaft (23), the shift rod (13) has an upper end located above the upper case (2) and is not shown. It is connected to the operating lever, and its lower end enters the upper case + 21 through a step formed in the front part of the upper case (2) at the vertically intermediate part thereof, and further inside the lower case (3),
It extends toward the clutch mechanism (14).

上記において、オイルパン(7)の前部壁(8)側に接
する前記の空洞部は、アッパケース(2)の上端から冷
却水ポンプ(11)の上部位置へ跨り、更にその一部分
が、前記シフトロッド(13)に沿ってロアケース(3
)の中間部分まで通じている。そして、この実施例では
、空洞部の上端部近傍位置において隔壁部材(15)等
によって仕切り、これによって従来の空洞部をそのまま
利用することとし、その上半部がオイルパン(7)の前
部壁(9)へ接する冷却水室(16)とされている。ま
た、前記シフトロッド(13)のアッパケース(2)内
への入口開口部は、冷却水が漏れないようシール(17
)によって密封する。冷却水室(16)の下端部には、
第2図でも示すように、海水中に浸漬するロアケース(
3)の前部壁部分において、船体進行方向であって、か
つ、角度αだけ前方に向かって下向きに傾斜する入口穴
(18)が形成され、他方、前記隔壁(15)によって
仕切られた冷却水室(16)の上部には、アッパケース
(2)の前部壁より外方に向けて開口する出口穴(19
)が形成されている。
In the above, the hollow portion in contact with the front wall (8) side of the oil pan (7) extends from the upper end of the upper case (2) to the upper position of the cooling water pump (11), and a part of the hollow portion contacts the front wall (8) side of the oil pan (7). Lower case (3) along shift rod (13)
). In this embodiment, the cavity is partitioned off by a partition member (15) or the like at a position near the upper end thereof, so that the conventional cavity can be used as is, and the upper half of the cavity is the front part of the oil pan (7). The cooling water chamber (16) is in contact with the wall (9). Further, the inlet opening of the shift rod (13) into the upper case (2) is sealed with a seal (17) to prevent cooling water from leaking.
) to be sealed. At the lower end of the cooling water chamber (16),
As shown in Figure 2, the lower case (
In the front wall portion of 3), an inlet hole (18) is formed which is inclined downwardly toward the front by an angle α in the direction of hull travel; At the top of the water chamber (16), there is an outlet hole (19) that opens outward from the front wall of the upper case (2).
) is formed.

従って、上記構成において、船体が前進方向へ航走する
と、上記ロアケース(3)の前部壁に開口された入口穴
(18)より冷却水が冷却水室(16)内に入り、その
船速によって、この氷室(16)内の水位がオイルパン
(7)を充分冷却できる位置まで上昇するから、これに
よって該オイルパン(7)内の潤滑油を冷却することが
できる。なお、実験によれば、前記傾斜角αは、10〜
40°が適当であり、また、入口穴(18)の直径り、
と出口(19)の直径D2との関係は、D!≦1.5 
D2が適当で、入口直径DIは試験的には5fi程度で
充分であった。
Therefore, in the above configuration, when the ship cruises in the forward direction, cooling water enters the cooling water chamber (16) through the inlet hole (18) opened in the front wall of the lower case (3), and the ship speed increases. As a result, the water level in the ice chamber (16) rises to a level where the oil pan (7) can be sufficiently cooled, thereby making it possible to cool the lubricating oil in the oil pan (7). According to experiments, the inclination angle α is 10 to
40° is suitable, and the diameter of the inlet hole (18),
The relationship between D! and the diameter D2 of the outlet (19) is D! ≦1.5
D2 is appropriate, and an inlet diameter DI of about 5fi was experimentally sufficient.

また、前記の如くシール(17)等を設け、或いは、他
の部分の隙間を小さくする等して漏水量を小量とするこ
とにより、航走時の水位が充分オイルパン(7)を冷却
できるまで上昇することが確かめられた。
In addition, by providing a seal (17) as described above or reducing the gap in other parts to reduce the amount of water leakage, the water level during cruising is sufficient to cool the oil pan (7). It was confirmed that it would rise as high as possible.

第3図は、この発明の第2の実施例を示している。この
実施例において、前記と同様に、アッパケース(2)内
にオイルパン(7)を形成したものにおいて、このオイ
ルパン(7)の前部壁(9)に接して、前記ドライブ軸
(10)等の通る空洞部とは隔てられた冷却水室(16
)を設ける。他方、ロアケース(3)には、前記第1図
の場合と略同じ位置に冷却水入口穴(18)を形成し、
この入口穴(18)と前記冷却水室(16)とを、冷却
水管(21)によって連絡する。また、冷却水室(16
)の上端部には外部に通ずる出口穴(19)を形成しで
ある。
FIG. 3 shows a second embodiment of the invention. In this embodiment, the oil pan (7) is formed in the upper case (2) as described above, and the drive shaft (10) is in contact with the front wall (9) of the oil pan (7). ), etc. The cooling water chamber (16
) will be established. On the other hand, a cooling water inlet hole (18) is formed in the lower case (3) at approximately the same position as in the case of FIG.
This inlet hole (18) and the cooling water chamber (16) are connected through a cooling water pipe (21). In addition, the cooling water chamber (16
) is formed with an exit hole (19) communicating with the outside.

従って、この実施例においても、前記と同様に、船体航
走時に入口穴(18)より冷却水が入り、この冷却水は
、冷却水管(21)から冷却水室(16)内に入り、オ
イルパン(7)内の潤滑油を冷却する。
Therefore, in this embodiment as well, cooling water enters from the inlet hole (18) when the ship is traveling, this cooling water enters the cooling water chamber (16) from the cooling water pipe (21), and the cooling water enters the cooling water chamber (16). Cool the lubricating oil in the pan (7).

なお、この実施例における前記入口穴(18)の傾斜角
αは、冷却水室(16)の容量が小さいため5〜40’
が適当である。また、冷却水室(16)に接するオイル
パン前部壁(9)の面積を増大して冷却効果を上げるた
め、例えば、第4図で示すように、該前部壁(9)を波
状等に形成して冷却フィン(22)等を設けることがで
きる。この場合、アッパケース(2)全体の鋳造が容易
なように、該フィン(22)を上下方向に形成すること
が望ましい。
Note that the inclination angle α of the inlet hole (18) in this embodiment is 5 to 40' because the capacity of the cooling water chamber (16) is small.
is appropriate. In addition, in order to increase the area of the front wall (9) of the oil pan in contact with the cooling water chamber (16) to improve the cooling effect, the front wall (9) may be shaped into a wavy shape, for example, as shown in FIG. It is possible to form the cooling fins (22) and the like. In this case, it is desirable to form the fins (22) in the vertical direction so that the entire upper case (2) can be easily cast.

なお、第1図及び第3図実施例を通じて、船速か低い場
合には、冷却水の水位が必ずしも充分でない場合も考え
られないではないが、潤滑油の冷却が必要な場合は、船
速か約20ノツト以上の高出力時であるので、充分実用
に供用することができる。
In addition, through the examples shown in Figures 1 and 3, it is not unthinkable that the level of cooling water is not necessarily sufficient when the ship speed is low. Since this is a high output of about 20 knots or more, it can be put to practical use.

発明の効果 以上の如くこの発明によれば、オイルパン壁と接する冷
却水室を設け、この冷却水室への冷却水入口を船体進行
方向に向けて開口しているから、船速によって自動的に
冷却水が取入れられ、該オイルパン内の潤滑油を冷却す
ることができる。従って、専用のオイルクーラーを設け
る場合と異なって、冷却水ポンプ或いはオイルクーラー
の本体等が不要となり、構造が簡単であるとともに、低
コストで製作できる効果がある。また、同様に冷却水ポ
ンプやクーラ一本体が不要であるため重量が減少し、か
つ、ロス馬力も少なくなる効果があり、故障も大幅に少
ない、また、この発明の実施例で示すように、前記冷却
水室をオイルパン壁に接する空洞部を利用して用いれば
、構造はより簡単で、かつ、冷却水の取入口や出口等を
開口し、必要個所にシー・ル等を施す等でよいからケー
ス自体も大幅な変更は不要で、従来におけるケースの基
本構造をそのまま利用できるという利点がある。
Effects of the Invention As described above, according to the present invention, a cooling water chamber is provided in contact with the oil pan wall, and the cooling water inlet to this cooling water chamber is opened toward the direction in which the ship is traveling. Cooling water is introduced into the oil pan to cool the lubricating oil in the oil pan. Therefore, unlike the case where a dedicated oil cooler is provided, there is no need for a cooling water pump or a main body of the oil cooler, and the structure is simple and can be manufactured at low cost. In addition, since a cooling water pump and a cooler body are not required, the weight is reduced, horsepower loss is reduced, and failures are significantly reduced.As shown in the embodiments of this invention, If the cooling water chamber is used in a cavity in contact with the oil pan wall, the structure is simpler, and the cooling water intake and outlet can be opened and seals can be applied to the necessary places. The advantage is that there is no need to make any major changes to the case itself, and the basic structure of conventional cases can be used as is.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例を示す船外機の要部縦断面図、
第2図は冷却水入口部分の拡大縦断面図、第3図はこの
発明の他の実施例を示す船外機全体の縦断面図、第4図
はアッパケース部分の要部横断面図である。 (11−ドライブユニットケース、(7)−・−オイル
パン、(8) −オイルパン壁、(16) −冷却水室
、(18) −−・入口穴。
FIG. 1 is a longitudinal cross-sectional view of a main part of an outboard motor showing an embodiment of the present invention;
Fig. 2 is an enlarged longitudinal cross-sectional view of the cooling water inlet portion, Fig. 3 is a longitudinal cross-sectional view of the entire outboard motor showing another embodiment of the present invention, and Fig. 4 is a cross-sectional view of the main part of the upper case portion. be. (11-Drive unit case, (7)--Oil pan, (8)-Oil pan wall, (16)-Cooling water chamber, (18)--Inlet hole.

Claims (1)

【特許請求の範囲】[Claims]  ドライブユニットのケースにエンジンのオイルパンを
有する船外機において、このオイルパンの周壁に接して
冷却水室を設け、この冷却水室の入口穴を水中浸漬部に
おける前記のケース壁に船体進行方向へ向けて開口した
ことを特徴とする船外機のオイルクーラー。
In an outboard motor that has an engine oil pan in the case of the drive unit, a cooling water chamber is provided in contact with the peripheral wall of the oil pan, and the inlet hole of the cooling water chamber is formed in the case wall in the submerged section in the direction of hull movement. An oil cooler for outboard motors that is characterized by its opening.
JP60029082A 1985-02-15 1985-02-15 Oil cooler of outboard engine Pending JPS61187508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60029082A JPS61187508A (en) 1985-02-15 1985-02-15 Oil cooler of outboard engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60029082A JPS61187508A (en) 1985-02-15 1985-02-15 Oil cooler of outboard engine

Publications (1)

Publication Number Publication Date
JPS61187508A true JPS61187508A (en) 1986-08-21

Family

ID=12266417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60029082A Pending JPS61187508A (en) 1985-02-15 1985-02-15 Oil cooler of outboard engine

Country Status (1)

Country Link
JP (1) JPS61187508A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124394A (en) * 1974-02-20 1975-09-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124394A (en) * 1974-02-20 1975-09-30

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