JPH0988585A - Cooling system and cooling device for outboard motor - Google Patents

Cooling system and cooling device for outboard motor

Info

Publication number
JPH0988585A
JPH0988585A JP7252919A JP25291995A JPH0988585A JP H0988585 A JPH0988585 A JP H0988585A JP 7252919 A JP7252919 A JP 7252919A JP 25291995 A JP25291995 A JP 25291995A JP H0988585 A JPH0988585 A JP H0988585A
Authority
JP
Japan
Prior art keywords
cooling water
cooling
passage
engine
temperature
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
Application number
JP7252919A
Other languages
Japanese (ja)
Other versions
JP3610404B2 (en
Inventor
Hitoshi Watanabe
仁司 渡辺
Masaaki Takahashi
正哲 高橋
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.)
Yamaha Marine Co Ltd
Original Assignee
Sanshin Kogyo KK
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 Sanshin Kogyo KK filed Critical Sanshin Kogyo KK
Priority to JP25291995A priority Critical patent/JP3610404B2/en
Publication of JPH0988585A publication Critical patent/JPH0988585A/en
Application granted granted Critical
Publication of JP3610404B2 publication Critical patent/JP3610404B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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 outboard marine engines

Abstract

PROBLEM TO BE SOLVED: To equalize an engine cooling water temperature and shorten a warming-up time of an engine through simple constitution. SOLUTION: A cooling device 1 comprises a subtank 2; a suction pump 9 to feed fresh cooling water to the subtank 2: a cooling water passage 5 to interconnect the subtank 2 and an engine 30 to form a closed loop; a circulation pump 6 located in the cooling water passage 5; a discharge passage 7 branched from the cooling water passage 5; a thermostat 8 located in the discharge passage 7; a level sensor (a water level detecting means) 3 to detect a water surface in the subtank 2; and an electromagnetic valve (a cooling water flow rate control means) 4 to control the feed of fresh cooling water to the subtank 2 in linkage with the level sensor 3. When the temperature of cooling water flowing through the cooling water passage 5 is below a given value, cooling water is circulated through the cooling water passage 5 and when the temperature of cooling water exceeds a given value, a part of cooling water is discharged to the outside of the cooling water passage 5 and fresh cooling water is supplied to the cooling water passage 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、船外機の冷却方式
及び冷却装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling system and a cooling device for an outboard motor.

【0002】[0002]

【従来の技術】従来、船外機のエンジンは海水によって
冷却されるが、冷却に供された海水はそのまま捨てられ
ていた。つまり、従来は海水をオープンループで流して
エンジンを冷却していた。
2. Description of the Related Art Conventionally, an engine of an outboard motor is cooled by seawater, but the seawater used for cooling is discarded as it is. In other words, in the past, seawater was run in an open loop to cool the engine.

【0003】[0003]

【発明が解決しようとする課題】ところが、従来のよう
に海水をオープンループで流す冷却方式では、エンジン
の入口と出口における冷却水の温度差が大きく、エンジ
ン内で冷却水温が不均一となって信頼性が損なわれる
他、エンジンの暖機運転時間が長くなるという問題があ
った。
However, in the conventional cooling method of flowing seawater in an open loop, the temperature difference between the cooling water at the inlet and the outlet of the engine is large, and the cooling water temperature becomes non-uniform in the engine. In addition to the loss of reliability, there was the problem that the warm-up time of the engine would be long.

【0004】そこで、車両用エンジンと同様に冷却水を
閉ループで循環させる方式を船外機にも適用することが
考えられるが、この方式には熱を外部に放出するための
ラジエータが不可欠であり、特に設置スペースに制約を
伴う船外機の大型化を招くために斯かる方式を採用する
ことは困難である。
Therefore, it is conceivable to apply the method of circulating the cooling water in a closed loop to the outboard motor as in the case of the vehicle engine, but this method requires a radiator for releasing heat to the outside. In particular, it is difficult to adopt such a method because it causes the outboard motor to become large in size, which requires a limited installation space.

【0005】本発明は上記問題に鑑みてなされたもの
で、その目的とする処は、簡単な構成でエンジン冷却水
温の均一化と暖機運転時間の短縮を図ることができる船
外機の冷却方式及び冷却装置を提供することにある。
The present invention has been made in view of the above problems, and an object of the present invention is to cool an outboard motor capable of uniforming engine cooling water temperature and shortening warm-up operation time with a simple structure. A method and a cooling device are provided.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するた
め、請求項1記載の発明は、冷却水温が所定値以下であ
る場合には冷却水を閉ループ内で循環せしめ、冷却水温
が所定値を超えると冷却水の一部を閉ループ外に排出す
るとともに、新たな冷却水を閉ループ内に補給すること
を特徴とする。
In order to achieve the above object, the invention according to claim 1 circulates the cooling water in a closed loop when the cooling water temperature is below a predetermined value so that the cooling water temperature reaches a predetermined value. When it exceeds, a part of the cooling water is discharged to the outside of the closed loop, and a new cooling water is supplied to the inside of the closed loop.

【0007】又、請求項2記載の発明は、船外機本体に
設けられたサブタンクと、該サブタンクに新たな冷却水
を供給する吸い上げポンプと、サブタンクとエンジンを
結んで閉ループを構成する冷却水通路と、該冷却水通路
に設けられる循環ポンプと、冷却水通路から分岐して船
外機外に開口する排出通路と、該排出通路に設けられる
サーモスタットと、前記サブタンク内の水面を検知する
水位検知手段と、該水位検知手段に連動して前記サブタ
ンクへの新たな冷却水の供給を制御する冷却水流量制御
手段を含んで船外機の冷却装置を構成したことを特徴と
する。
Further, according to the invention of claim 2, a sub-tank provided in the main body of the outboard motor, a suction pump for supplying new cooling water to the sub-tank, and a cooling water forming a closed loop by connecting the sub-tank to the engine. A passage, a circulation pump provided in the cooling water passage, a discharge passage branched from the cooling water passage and opened to the outside of the outboard motor, a thermostat provided in the discharge passage, and a water level for detecting the water level in the sub-tank. The cooling device for the outboard motor is configured to include a detection unit and a cooling water flow rate control unit that controls the supply of new cooling water to the sub-tank in association with the water level detection unit.

【0008】従って、本発明によれば、冷却水温が所定
温度以下の範囲では冷却水は閉ループを構成する冷却水
通路を循環してエンジンの冷却に供せられるため、エン
ジンでの冷却水温が均一化されて信頼性が高められると
ともに、エンジン始動時に冷却水温が所定温度まで急速
に高められるためにエンジンの暖機運転時間が短縮され
る。
Therefore, according to the present invention, since the cooling water circulates through the cooling water passage forming the closed loop and is used for cooling the engine in the range where the cooling water temperature is below the predetermined temperature, the cooling water temperature in the engine is uniform. And the reliability is enhanced, and the temperature of the engine warm-up is shortened because the temperature of the cooling water is rapidly raised to a predetermined temperature when the engine is started.

【0009】又、冷却水温が所定値を超えると、温度の
高い冷却水の一部が排出されて温度の低い新たな冷却水
が閉ループ内に補給されるため、ラジエータを設けなく
ても閉ループ内を循環する冷却水の温度を所定値以下に
抑えることができ、冷却装置の構造単純化を図ることが
できる。
Further, when the cooling water temperature exceeds a predetermined value, a part of the cooling water having a high temperature is discharged and a new cooling water having a low temperature is replenished in the closed loop. Therefore, even if the radiator is not provided, the inside of the closed loop is cooled. The temperature of the cooling water that circulates can be suppressed to a predetermined value or less, and the structure of the cooling device can be simplified.

【0010】[0010]

【発明の実施の形態】以下に本発明の実施の形態を添付
図面に基づいて説明する。
Embodiments of the present invention will be described below with reference to the accompanying drawings.

【0011】図1は本発明に係る冷却装置の構成を示す
船外機の側面図、図2は同冷却装置の部分構成図、図3
は同冷却装置の作用を示すフローチャートである。
FIG. 1 is a side view of an outboard motor showing a configuration of a cooling device according to the present invention, FIG. 2 is a partial configuration diagram of the cooling device, and FIG.
3 is a flowchart showing the operation of the cooling device.

【0012】図1に示す船外機50はクランプブラケッ
ト51によって船体60の船尾板60aに取り付けられ
ており、これはチルト軸52を中心として上下に揺動
し、その上部のカウリング53内にはエンジン30が収
納されている。又、船外機50の下部には推進装置40
が設けられており、該推進装置40は前記エンジン30
によって回転駆動されて所要の推進力を発生するプロペ
ラ41を備えている。
The outboard motor 50 shown in FIG. 1 is attached to a stern plate 60a of a hull 60 by a clamp bracket 51, which swings up and down about a tilt shaft 52, and in a cowling 53 above it. The engine 30 is stored. Further, the propulsion device 40 is provided below the outboard motor 50.
And the propulsion device 40 is provided with the engine 30.
It is equipped with a propeller 41 which is driven to rotate and generates a required propulsive force.

【0013】而して、船外機50には本発明に係る冷却
装置1が設けられているが、ここで、この冷却装置1の
構成を図1に基づいて説明する。
The outboard motor 50 is provided with the cooling device 1 according to the present invention. Here, the configuration of the cooling device 1 will be described with reference to FIG.

【0014】冷却装置1は船外機50の前記エンジン3
0の下方に搭載されるサブタンク2を有しており、該サ
ブタンク2の側部には、サブタンク2内の冷却水の水面
(水位h)を検出するためのレベルセンサ3が取り付け
られている。又、サブタンク2の底部には、レベルセン
サ3に連動して開閉する電磁バルブ4が取り付けられて
いる。尚、レベルセンサ3と電磁バルブ4はエンジン制
御装置(ECU)70に電気的に接続されており、該エ
ンジン制御装置70は船外機50側のメインスイッチ7
1と船体60側のメインスイッチ72に電気的に接続さ
れている。
The cooling device 1 is the engine 3 of the outboard motor 50.
It has a sub-tank 2 mounted below 0, and a level sensor 3 for detecting the water surface (water level h) of the cooling water in the sub-tank 2 is attached to the side of the sub-tank 2. An electromagnetic valve 4 that opens and closes in conjunction with the level sensor 3 is attached to the bottom of the sub tank 2. The level sensor 3 and the electromagnetic valve 4 are electrically connected to an engine control unit (ECU) 70, and the engine control unit 70 controls the main switch 7 on the outboard motor 50 side.
1 and the main switch 72 on the side of the hull 60 are electrically connected.

【0015】上記サブタンク2には、該サブタンク2と
前記エンジン30とを結んで閉ループを構成する冷却水
通路5の入口5aと出口5bが接続されており、サブタ
ンク2の上方であって、且つ、冷却水通路5の入口5a
に近い側には循環ポンプ6が設けられている。又、同じ
くサブタンク2の上方であって、冷却水通路5の出口5
bに近い側からは排出通路7が分岐しており、該排出通
路7は後方に延出して船外機50外の大気中に開口して
いる。そして、この排出通路7には、前記冷却水通路5
を流れる冷却水の温度tが所定値t0 を超える(t>t
0 )と開くサーモスタット8が設けられている。
The sub-tank 2 is connected to an inlet 5a and an outlet 5b of a cooling water passage 5 which connects the sub-tank 2 and the engine 30 to form a closed loop, which is above the sub-tank 2 and Inlet 5a of the cooling water passage 5
A circulation pump 6 is provided on the side close to. Similarly, above the sub tank 2 and at the outlet 5 of the cooling water passage 5.
A discharge passage 7 is branched from a side near b, and the discharge passage 7 extends rearward and opens to the atmosphere outside the outboard motor 50. The cooling water passage 5 is provided in the discharge passage 7.
The temperature t of the cooling water flowing through exceeds a predetermined value t 0 (t> t
A thermostat 8 that opens with 0 ) is provided.

【0016】他方、前記サブタンク2の下方には、ドラ
イブ軸20によって駆動されて冷却水である海水を吸い
上げてこれをサブタンク2に供給するための吸い上げポ
ンプ9が設置されており、該吸い上げポンプ9の吸入側
には、前記推進装置40の側部に開口する冷却水取入口
10に連なる吸込管11が接続されている。又、吸い上
げポンプ9の吐出側はウォータチューブ12を介して前
記電磁バルブ4に接続されている。尚、吸い上げポンプ
9には、所定圧以上で開くリリーフバルブ13が設けら
れている。
On the other hand, below the sub-tank 2, there is installed a suction pump 9 which is driven by a drive shaft 20 to suck up seawater which is cooling water and supply it to the sub-tank 2. A suction pipe 11 connected to the cooling water intake 10 that is open to the side of the propulsion device 40 is connected to the suction side of the. The discharge side of the suction pump 9 is connected to the electromagnetic valve 4 via a water tube 12. The suction pump 9 is provided with a relief valve 13 that opens at a predetermined pressure or higher.

【0017】次に、本冷却装置1の作用を図3に示すフ
ローチャートに従って説明する。
Next, the operation of the cooling device 1 will be described with reference to the flow chart shown in FIG.

【0018】船外機50においては、エンジン30の始
動前において電磁バルブ4は開き、サーモスタット8は
閉じられ、サブタンク2内の冷却水は外部に排出されて
いる。
In the outboard motor 50, the electromagnetic valve 4 is opened, the thermostat 8 is closed, and the cooling water in the sub tank 2 is discharged to the outside before the engine 30 is started.

【0019】而して、メインスイッチ71又は72がO
Nされて(図3のSTEP1)エンジン30が始動されると
(図3のSTEP2)、ドライブ軸20によって吸い上げポ
ンプ9が駆動されて冷却水が冷却水取入口10から吸引
され、吸引された冷却水はウォータチューブ12及び開
状態にある電磁バルブ4を通ってサブタンク2内に供給
される。これと同時に循環ポンプ6が駆動され、サブタ
ンク2内に収容された冷却水(海水)は閉ループを構成
する冷却水通路5を図1及び図2の矢印方向に流れてエ
ンジン30を冷却する。このため、冷却水通路5を循環
する冷却水の温度tはエンジン30の熱によって所定温
度まで急速に高められ、従って、エンジン30の暖機運
転時間が短縮される。
Therefore, the main switch 71 or 72 is turned off.
When the engine 30 is started N (STEP 1 in FIG. 3) and the engine 30 is started (STEP 2 in FIG. 3), the drive shaft 20 drives the suction pump 9 to suck the cooling water from the cooling water inlet 10, and the sucked cooling. Water is supplied into the sub tank 2 through the water tube 12 and the electromagnetic valve 4 in the open state. At the same time, the circulation pump 6 is driven, and the cooling water (seawater) contained in the sub tank 2 flows through the cooling water passage 5 forming a closed loop in the direction of the arrows in FIGS. 1 and 2 to cool the engine 30. Therefore, the temperature t of the cooling water circulating in the cooling water passage 5 is rapidly raised to a predetermined temperature by the heat of the engine 30, and therefore the warm-up operation time of the engine 30 is shortened.

【0020】エンジン30の始動後、サブタンク2内の
冷却水の水位hはレベルセンサ3によって検出され、水
位hが定用水位h2 (図2参照)に達すると、電磁バル
ブ4が閉じられる。(図3のSTEP3,4) 而して、冷却水の温度tが所定値t0 を超える(t>t
0 )と、サーモスタット8が開かれ(図3のSTEP5,
6)、冷却水通路5を流れる温度の高い冷却水の一部が
排出通路7を通って船外機50外に排出される。する
と、サブタンク2内の冷却水の水位hが次第に下がり、
レベルセンサ3によって水位hが図2に示す下限水位h
1 まで下がったことが検出されると、サーモスタット8
が閉じらた後、電磁バルブ4が開かれる(図3のSTEP7
〜9)。
After the engine 30 is started, the water level h of the cooling water in the sub tank 2 is detected by the level sensor 3, and when the water level h reaches the regular water level h 2 (see FIG. 2), the electromagnetic valve 4 is closed. (STEPs 3 and 4 in FIG. 3) Therefore, the temperature t of the cooling water exceeds the predetermined value t 0 (t> t
0 ), the thermostat 8 is opened (STEP 5,
6), part of the high-temperature cooling water flowing through the cooling water passage 5 is discharged to the outside of the outboard motor 50 through the discharge passage 7. Then, the water level h of the cooling water in the sub tank 2 gradually decreases,
The water level h by the level sensor 3 is the lower limit water level h shown in FIG.
When it is detected that the temperature has dropped to 1 , the thermostat 8
After closing, the electromagnetic valve 4 is opened (STEP7 in Fig. 3).
~ 9).

【0021】上述のように電磁バルブ4が開かれると、
吸い上げポンプ9によって冷却水取入口10から吸込管
11を経て吸い上げられた温度の低い新たな冷却水(海
水)がウォータチューブ12及び電磁バルブ4を通って
サブタンク2内に補給される。すると、サブタンク2内
の冷却水の水位hが次第に上昇し、レベルセンサ3によ
って水位hが図2に示す定用水位h2 まで上昇したこと
が検知されると、電磁バルブ4が閉じられ(図3のSTEP
3,4)、サブタンク2への冷却水の補給が停止され
る。つまり、冷却水通路5を循環する冷却水の温度tが
所定値t0 を超えると、排出通路7から排出された温度
の高い冷却水がこれと同量の温度の低い冷却水によって
置換されるため、放熱用のラジエータを設けなくてもエ
ンジン30の熱は排出される冷却水によって船外機50
外に放出され、この結果、冷却水通路5を循環する冷却
水の温度tは所定値t0 以下に抑えられ、冷却装置1の
構造単純化が図られる。
When the electromagnetic valve 4 is opened as described above,
New low-temperature cooling water (seawater) sucked up from the cooling water intake port 10 through the suction pipe 11 by the suction pump 9 is supplied to the sub tank 2 through the water tube 12 and the electromagnetic valve 4. Then, the water level h of the cooling water in the sub tank 2 gradually rises, and when the level sensor 3 detects that the water level h has risen to the regular water level h 2 shown in FIG. 2, the electromagnetic valve 4 is closed (see FIG. STEP of 3
3, 4), the supply of the cooling water to the sub tank 2 is stopped. That is, when the temperature t of the cooling water circulating in the cooling water passage 5 exceeds the predetermined value t 0 , the cooling water having a high temperature discharged from the discharge passage 7 is replaced with the same amount of the cooling water having a low temperature. Therefore, even if a radiator for heat dissipation is not provided, the heat of the engine 30 is exhausted by the cooling water discharged.
As a result, the temperature t of the cooling water that is discharged to the outside and circulates in the cooling water passage 5 is suppressed to a predetermined value t 0 or less, and the structure of the cooling device 1 is simplified.

【0022】而して、温度の低い冷却水の補給によって
温度の下がった冷却水は、その温度tが所定値t0 以下
である間は冷却水通路5を循環してエンジン30の冷却
に供され、その温度tが所定値t0 を超えると、前述の
ようにその一部が温度の低い新たな冷却水によって置換
され、以後は同様の作用が繰り返される。
Thus, the cooling water whose temperature has dropped due to the replenishment of the cooling water having a low temperature is circulated in the cooling water passage 5 to be used for cooling the engine 30 while the temperature t is below a predetermined value t 0. When the temperature t exceeds the predetermined value t 0 , part of the temperature t is replaced with new cooling water having a low temperature as described above, and the same operation is repeated thereafter.

【0023】そして、エンジン30が停止すると(図3
のSTEP10)、メインスイッチ71又は72がOFFさ
れ(図3のSTEP11)、サブタンク2内の冷却水は外部
に排出され、一連の動作が終了する。
When the engine 30 is stopped (see FIG. 3)
STEP 10), the main switch 71 or 72 is turned OFF (STEP 11 in FIG. 3), the cooling water in the sub tank 2 is discharged to the outside, and a series of operations is completed.

【0024】[0024]

【発明の効果】以上の説明で明らかなように、本発明に
よれば、冷却水温が所定温度以下の範囲では冷却水は閉
ループを構成する冷却水通路を循環してエンジンの冷却
に供せられるため、エンジンでの冷却水温が均一化され
て信頼性が高められるとともに、エンジン始動時に冷却
水温が所定温度まで急速に高められるためにエンジンの
暖機運転時間が短縮されるという効果が得られる。
As is apparent from the above description, according to the present invention, the cooling water circulates through the cooling water passage forming the closed loop and is used for cooling the engine when the cooling water temperature is within the predetermined temperature range. Therefore, the cooling water temperature in the engine is made uniform and the reliability is enhanced, and the cooling water temperature is rapidly raised to a predetermined temperature at the time of engine startup, so that the warm-up time of the engine is shortened.

【0025】又、本発明によれば、冷却水温が所定値を
超えると、温度の高い冷却水の一部が排出されて温度の
低い新たな冷却水が閉ループ内に補給されるため、ラジ
エータを設けなくても閉ループ内を循環する冷却水の温
度を所定値以下に抑えることができ、冷却装置の構造単
純化を図ることができるという効果が得られる。
Further, according to the present invention, when the cooling water temperature exceeds a predetermined value, a part of the cooling water having a high temperature is discharged and a new cooling water having a low temperature is replenished in the closed loop. Even if it is not provided, the temperature of the cooling water circulating in the closed loop can be suppressed to a predetermined value or less, and the structure of the cooling device can be simplified.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る冷却装置の構成を示す船外機の側
面図である。
FIG. 1 is a side view of an outboard motor showing a configuration of a cooling device according to the present invention.

【図2】本発明に係る冷却装置の部分構成図である。FIG. 2 is a partial configuration diagram of a cooling device according to the present invention.

【図3】本発明に係る冷却装置の作用を示すフローチャ
ートである。
FIG. 3 is a flow chart showing the operation of the cooling device according to the present invention.

【符号の説明】[Explanation of symbols]

1 冷却装置 2 サブタンク 3 レベルセンサ(水位検知手段) 4 電磁バルブ(冷却水流量制御手段) 5 冷却水通路 6 循環ポンプ 7 排出通路 8 サーモスタット 9 吸い上げポンプ 50 船外機 1 Cooling device 2 Sub-tank 3 Level sensor (water level detection means) 4 Electromagnetic valve (cooling water flow rate control means) 5 Cooling water passage 6 Circulation pump 7 Discharge passage 8 Thermostat 9 Suction pump 50 Outboard motor

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 冷却水温が所定値以下である場合には冷
却水を閉ループ内で循環せしめ、冷却水温が所定値を超
えると冷却水の一部を閉ループ外に排出するとともに、
新たな冷却水を閉ループ内に補給することを特徴とする
船外機の冷却方式。
1. When the cooling water temperature is below a predetermined value, the cooling water is circulated in the closed loop, and when the cooling water temperature exceeds the predetermined value, a part of the cooling water is discharged outside the closed loop.
An outboard motor cooling method characterized by supplying new cooling water into the closed loop.
【請求項2】 船外機本体に設けられたサブタンクと、
該サブタンクに新たな冷却水を供給する吸い上げポンプ
と、サブタンクとエンジンを結んで閉ループを構成する
冷却水通路と、該冷却水通路に設けられる循環ポンプ
と、冷却水通路から分岐して船外機外に開口する排出通
路と、該排出通路に設けられるサーモスタットと、前記
サブタンク内の水面を検知する水位検知手段と、該水位
検知手段に連動して前記サブタンクへの新たな冷却水の
供給を制御する冷却水流量制御手段を含んで構成される
ことを特徴とする船外機の冷却装置。
2. A sub tank provided in the outboard motor body,
A suction pump that supplies new cooling water to the sub tank, a cooling water passage that connects the sub tank and the engine to form a closed loop, a circulation pump that is provided in the cooling water passage, and an outboard motor that branches from the cooling water passage. A discharge passage opening to the outside, a thermostat provided in the discharge passage, a water level detection means for detecting the water surface in the sub tank, and a new supply of cooling water to the sub tank controlled in cooperation with the water level detection means A cooling device for an outboard motor, which is configured to include a cooling water flow rate control means.
JP25291995A 1995-09-29 1995-09-29 Outboard motor cooling system Expired - Fee Related JP3610404B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25291995A JP3610404B2 (en) 1995-09-29 1995-09-29 Outboard motor cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25291995A JP3610404B2 (en) 1995-09-29 1995-09-29 Outboard motor cooling system

Publications (2)

Publication Number Publication Date
JPH0988585A true JPH0988585A (en) 1997-03-31
JP3610404B2 JP3610404B2 (en) 2005-01-12

Family

ID=17244000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25291995A Expired - Fee Related JP3610404B2 (en) 1995-09-29 1995-09-29 Outboard motor cooling system

Country Status (1)

Country Link
JP (1) JP3610404B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6199518B1 (en) 1998-04-23 2001-03-13 Aisin Seiki Kabushiki Kaisha Cooling device of an engine
JP2007138940A (en) * 2005-11-17 2007-06-07 Weber Technology Ag V-engine with at least one turbocharger
US20100112877A1 (en) * 2008-10-30 2010-05-06 Brp Us Inc. System and method for cooling a marine outboard engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6199518B1 (en) 1998-04-23 2001-03-13 Aisin Seiki Kabushiki Kaisha Cooling device of an engine
JP2007138940A (en) * 2005-11-17 2007-06-07 Weber Technology Ag V-engine with at least one turbocharger
US20100112877A1 (en) * 2008-10-30 2010-05-06 Brp Us Inc. System and method for cooling a marine outboard engine
US8333629B2 (en) * 2008-10-30 2012-12-18 Brp Us Inc. System and method for cooling a marine outboard engine

Also Published As

Publication number Publication date
JP3610404B2 (en) 2005-01-12

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