JP3062761B2 - Engine lubricating oil cooling system - Google Patents
Engine lubricating oil cooling systemInfo
- Publication number
- JP3062761B2 JP3062761B2 JP2017258A JP1725890A JP3062761B2 JP 3062761 B2 JP3062761 B2 JP 3062761B2 JP 2017258 A JP2017258 A JP 2017258A JP 1725890 A JP1725890 A JP 1725890A JP 3062761 B2 JP3062761 B2 JP 3062761B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- lubricating oil
- engine
- cooling
- engine body
- 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.)
- Expired - Lifetime
Links
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はエンジン用潤滑油冷却装置に係り、特に海水
冷却により熱交換を行う舶用エンジンに好適なエンジン
用潤滑油クーラに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil cooling device for an engine, and more particularly to an engine lubricating oil cooler suitable for a marine engine that performs heat exchange by cooling seawater.
エンジン本体の冷却系統と、該エンジンに装着された
過給機により圧縮された吸入空気の冷却系統がそれぞれ
独立していて、前記２系統の冷却水回路に、機外より導
入する海水と熱交換をする熱交換器を共有する冷却水回
路を構成した舶用エンジンでは、第２図に示すごとくエ
ンジン本体用冷却水回路101には、冷却水ポンプ２、エ
ンジン本体用潤滑油クーラ３、エンジン本体４、サーモ
スタット５、熱交換器6Aが配設されており、潤滑油クー
ラ３、エンジン本体４を通過して高温となった冷却水
が、熱交換器6Aを通過する間に、機外の冷却水ポンプ７
で導入される海水で熱交換され、冷却後の冷却水が再び
潤滑油クーラ３、エンジン本体４内を循環できるよう、
冷却水ポンプ２を駆動している。一方過給機８で圧縮さ
れた吸入空気の冷却水回路109には、冷却水ポンプ10、
アフタクーラ11、熱交換器6Bが配設されており、アフタ
クーラ11通過後の冷却水は、熱交換器6Bを通過する間
に、機外の冷却水ポンプ７で導入される海水で熱交換さ
れ、冷却後の冷却水が再び冷却水回路109内を循環でき
るよう、冷却水ポンプ10を駆動している。熱交換器６は
エンジン本体用熱交換器6Aと過給気アフタクーラ用熱交
換器6Bに分離されており、熱交換器６内に設けられた多
管式銅チューブ内に冷却水ポンプ７で吸上げられた冷温
海水を流して、前記冷却水回路101,109内を循環するそ
れぞれの冷却水を冷却している。The cooling system of the engine body and the cooling system of the intake air compressed by the supercharger mounted on the engine are independent of each other, and heat exchange with seawater introduced from outside the machine into the two cooling water circuits. As shown in FIG. 2, in a marine engine having a cooling water circuit sharing a heat exchanger, a cooling water pump 101, an engine body lubricating oil cooler 3, and an engine body 4 are provided in the engine body cooling water circuit 101. , A thermostat 5, and a heat exchanger 6A. Cooling water that has passed through the lubricating oil cooler 3 and the engine body 4 and has become high temperature passes through the heat exchanger 6A, Pump 7
Heat is exchanged with the seawater introduced at the time, and the cooled cooling water can be circulated again in the lubricating oil cooler 3 and the engine body 4.
The cooling water pump 2 is driven. On the other hand, a cooling water circuit 109 for the intake air compressed by the supercharger 8 has a cooling water pump 10,
An aftercooler 11 and a heat exchanger 6B are provided, and the cooling water after passing through the aftercooler 11 is exchanged with seawater introduced by a cooling water pump 7 outside the machine while passing through the heat exchanger 6B, The cooling water pump 10 is driven so that the cooling water after cooling can circulate in the cooling water circuit 109 again. The heat exchanger 6 is separated into a heat exchanger 6A for the engine body and a heat exchanger 6B for the supercharged aftercooler, and the cooling water pump 7 sucks into a multi-tubular copper tube provided in the heat exchanger 6. Each of the cooling water circulating in the cooling water circuits 101 and 109 is cooled by flowing the raised cold and hot seawater.
エンジン本体用の冷却水ポンプ２、熱交換器6Aはエン
ジン本体４での冷却水温を85〜90℃に維持して、エンジ
ンの燃焼が最適条件で行われるようにそれぞれの容量が
きめられている。従ってエンジン本体用潤滑油温度をエ
ンジンの使用目的に応じて、エンジン本体４での冷却温
度とは関係なく変えたい場合、潤滑油クーラ３がエンジ
ン本体用冷却水回路101内ではエンジン本体４とシリー
ズに配置されているため、エンジン本体４での冷却水温
度も変わり、燃焼条件を悪くして未燃焼ガスの発生を増
加させてしまう。又、潤滑油クーラ３のエレメント容量
をアップしただけでは、エンジン本体４の冷却水温度を
適温に維持したままで、潤滑油温度を変えることは困難
であり、使用目的に応じてエンジン本体４の冷却水温
度，潤滑油温度をそれぞれ最適温度に維持できるように
するには、その都度、冷却水ポンプ２、オイルポンプな
どの附帯装置を改造しなければならないという問題があ
る。The cooling water pump 2 for the engine body and the heat exchanger 6A have their respective capacities determined so that the cooling water temperature in the engine body 4 is maintained at 85 to 90 ° C. and combustion of the engine is performed under optimum conditions. . Therefore, when it is desired to change the temperature of the lubricating oil for the engine main body irrespective of the cooling temperature in the engine main body 4 in accordance with the purpose of use of the engine, the lubricating oil cooler 3 is connected to the , The temperature of the cooling water in the engine body 4 also changes, and the combustion conditions are deteriorated, thereby increasing the generation of unburned gas. Further, it is difficult to change the lubricating oil temperature while maintaining the cooling water temperature of the engine main body 4 at an appropriate temperature only by increasing the element capacity of the lubricating oil cooler 3. In order to maintain the cooling water temperature and the lubricating oil temperature at the respective optimum temperatures, there is a problem in that ancillary devices such as the cooling water pump 2 and the oil pump must be modified each time.
本発明は上記問題に着目し、潤滑油冷却をエンジン本
体用冷却水回路から分離させ、過給気アフタクーラ用冷
却水回路にエンジン本体用潤滑油クーラを配設して、エ
ンジン本体の冷却とは無関係に、潤滑油温度を任意に巾
広く調整可能としたエンジン用潤滑油冷却装置の提供を
目的としている。The present invention focuses on the above problem, separates the lubricating oil cooling from the cooling water circuit for the engine main body, and arranges the lubricating oil cooler for the engine main body in the cooling water circuit for the supercharged aftercooler. Irrespective of this, an object of the present invention is to provide a lubricating oil cooling device for an engine in which the lubricating oil temperature can be arbitrarily and widely adjusted.
上記目的を達成するため、本発明に係るエンジン用潤
滑油冷却装置は、例えば第１図を参照し説明すれば、エ
ンジン本体４の冷却系統１と、該エンジンに装着された
過給機８で圧縮された吸入空気の冷却系統９とがそれぞ
れ独立してなるエンジンの冷却水回路1,9を形成すると
共に、前記２系統の冷却水回路1,9に機外又は機内に配
設された冷却水ポンプ７により機外より導入する冷却水
と熱交換する熱交換器６を共有するように配設したエン
ジンの冷却水回路の構成において、過給機８により圧縮
された吸入空気を冷却するアフタクーラ11の下流側の冷
却水管路に連通してエンジン本体用潤滑油クーラ３を配
設したことを特徴としている。In order to achieve the above object, a lubricating oil cooling device for an engine according to the present invention includes, for example, a cooling system 1 of an engine body 4 and a supercharger 8 mounted on the engine, as described with reference to FIG. The cooling system 9 for the compressed intake air forms independent cooling water circuits 1 and 9 for the engine, and the two cooling water circuits 1 and 9 are provided outside or inside the machine. An aftercooler for cooling intake air compressed by a supercharger 8 in a configuration of a cooling water circuit of an engine arranged to share a heat exchanger 6 for exchanging heat with cooling water introduced from outside the machine by a water pump 7. The lubricating oil cooler 3 for the engine body is provided in communication with the cooling water pipe on the downstream side of the engine 11.
（１）第１図において矢視で示すように、過給機８によ
り圧縮された吸入空気を冷却するアフタクーラ11の下流
側の冷却水管路に連通してエンジン本体用潤滑油クーラ
３を配設している。このため、冷却水で先ず、アフター
クーラ11を冷却するので給気の冷却効率が向上し、空気
流量が増加し、エンジン出力が増大する。そしてアフタ
ークーラ11によって昇温した冷却水でエンジン本体用潤
滑油クーラ３を冷却するので潤滑油の適度に冷却され、
エンジン本体４内の各摺動部の摩擦馬力が低減する。(1) As shown by an arrow in FIG. 1, a lubricating oil cooler 3 for an engine body is provided in communication with a cooling water pipe downstream of an aftercooler 11 for cooling intake air compressed by a supercharger 8. doing. Therefore, the aftercooler 11 is first cooled by the cooling water, so that the cooling efficiency of the supply air is improved, the air flow rate is increased, and the engine output is increased. Then, since the lubricating oil cooler 3 for the engine body is cooled by the cooling water heated by the after cooler 11, the lubricating oil is cooled appropriately,
The friction horsepower of each sliding portion in the engine body 4 is reduced.
（２）潤滑油がエンジン本体４の冷却系統１とは分離さ
れた別の冷却水回路９の冷却水で冷却されるので、エン
ジン本体用の冷却水温度とは無関係に潤滑油温度を設定
できる。(2) Since the lubricating oil is cooled by the cooling water of another cooling water circuit 9 separated from the cooling system 1 of the engine body 4, the lubricating oil temperature can be set independently of the cooling water temperature for the engine body. .
以下本発明にもとづくエンジン用潤滑油冷却装置の実
施例につき、図面で説明する。第１図においてエンジン
は、エンジン本体４の冷却水回路１と、該エンジンに装
着された過給機８により圧縮された吸入空気及びエンジ
ン本体用潤滑油の冷却を行う冷却水回路９とがあり、こ
れら２系統の冷却水回路１、９には、機外の冷却水ポン
プ７により導入される海水により熱交換を行う熱交換器
６を配置した舶用エンジンである。冷却水回路１には、
冷却水ポンプ２、エンジン本体４、サーモスタット５、
エンジン本体用熱交換器6Aが配設され、冷却水回路９に
は冷却水ポンプ10、アフタクーラ11、エンジン本体用潤
滑油クーラ３、熱交換器6Bが配設される。熱交換器６は
２室6A、6Bに分離されているが、熱交換器６内には多管
式銅チューブが貫通させてあり、この中を冷却水ポンプ
７で吸上げされた海水が流れる構成となっている。Hereinafter, an embodiment of an engine lubricating oil cooling device according to the present invention will be described with reference to the drawings. In FIG. 1, the engine has a cooling water circuit 1 for an engine body 4 and a cooling water circuit 9 for cooling intake air compressed by a supercharger 8 mounted on the engine and lubricating oil for the engine body. These two cooling water circuits 1 and 9 are marine engines provided with a heat exchanger 6 for exchanging heat with seawater introduced by a cooling water pump 7 outside the machine. In the cooling water circuit 1,
Cooling water pump 2, engine body 4, thermostat 5,
An engine body heat exchanger 6A is provided, and a cooling water circuit 9 is provided with a cooling water pump 10, an aftercooler 11, an engine body lubricating oil cooler 3, and a heat exchanger 6B. The heat exchanger 6 is divided into two chambers 6A and 6B, and a multi-tubular copper tube penetrates through the heat exchanger 6, through which the seawater sucked by the cooling water pump 7 flows. It has a configuration.
次に作動につき説明する。冷却水回路１内の冷却水は
冷却水ポンプ２により冷却水回路１内を循環するが、エ
ンジン本体４の温度が低い間は、サーモスタット５が熱
交換器6Aへの通路を閉じて冷却水を熱交換器6Aへ流さ
ず、冷却水ポンプ２に直接戻し、冷却水温度を早くエン
ジンの最適燃焼状態になるようにしている。冷却水温度
が必要以上に上昇すると、エンジンオーバヒートの恐れ
があるので、サーモスタット５は自動的に熱交換器6Aへ
の通路を開き、熱交換器6A内を流れる冷温海水熱交換を
行い、エンジン本体４に流入する際の冷却水温度が常時
最適温度になるようにしている。冷却水回路９内の冷却
水は、冷却水ポンプ10により回路内を循環しており、排
気ガスを利用して高速回転する過給機８により吸入空気
が圧縮され高温度となった空気をアフタクーラ11で冷却
する。又その冷却水はエンジン本体用潤滑油クーラ３に
送水され、潤滑油を冷却する。従って、冷却水回路の冷
却水ポンプ10、熱交換器6Bの容量等を選定して置けば、
シリンダーに吸入される空気温度及びエンジン本体４の
潤滑油温度を最適状態に保持することが可能となる。Next, the operation will be described. The cooling water in the cooling water circuit 1 is circulated in the cooling water circuit 1 by the cooling water pump 2. However, while the temperature of the engine body 4 is low, the thermostat 5 closes the passage to the heat exchanger 6A to remove the cooling water. Instead of flowing to the heat exchanger 6A, it is returned directly to the cooling water pump 2 so that the temperature of the cooling water is quickly brought to the optimum combustion state of the engine. If the cooling water temperature rises more than necessary, the engine may overheat, so the thermostat 5 automatically opens the passage to the heat exchanger 6A and performs heat exchange between cold and hot seawater flowing through the heat exchanger 6A. The cooling water temperature at the time of flowing into 4 is always set to the optimum temperature. The cooling water in the cooling water circuit 9 is circulated in the circuit by a cooling water pump 10, and the intake air is compressed by a supercharger 8 rotating at a high speed using exhaust gas, and the high temperature air is cooled by an aftercooler. Cool at 11. The cooling water is sent to the engine body lubricating oil cooler 3 to cool the lubricating oil. Therefore, if the capacity and the like of the cooling water pump 10 and the heat exchanger 6B of the cooling water circuit are selected and placed,
It is possible to maintain the temperature of the air sucked into the cylinder and the temperature of the lubricating oil of the engine body 4 in an optimum state.
〔発明の効果〕 以上説明したように、本発明によれば、エンジン本体
の冷却系統と、吸入空気，エンジン本体用潤滑油の冷却
系統を独立して形成し、それぞれに熱交換器を配設し、
かつ過給機により圧縮された吸入空気を冷却するアフタ
クーラの下流側の冷却水管路に連通してエンジン本体用
潤滑油クーラを配設した。従って、エンジン本体の冷却
水温度に関係なく、アフタクーラで熱交換後の60℃前後
の低水温冷却水で潤滑油の冷却ができる。つまり先ず、
アフタークーラでの冷却によって給気の冷却効率が向上
し、空気流量が増加し、エンジン出力が増大する。そし
てアフタークーラによって昇温した冷却水でエンジン本
体用潤滑油クーラを冷却するので潤滑油の適度に冷却さ
れ、エンジン本体内の各摺動部の摩擦馬力が低減する。
また冷却水量を制御すれば、任意の巾広い温度にわたっ
た潤滑油を確保できるので摺動部分での摩耗，熱疲労が
防止され、部品の耐久寿命をさらに向上させることがで
きる。エンジン本体の冷却水温は、潤滑油温度に左右さ
れず燃焼時の最適状態に維持されることから、燃焼がよ
くなり、排気色等を最適にした運転が可能になる。[Effects of the Invention] As described above, according to the present invention, the cooling system for the engine body and the cooling system for the intake air and the lubricating oil for the engine body are formed independently, and the heat exchangers are provided respectively. And
Further, a lubricating oil cooler for the engine body is provided in communication with a cooling water pipe downstream of the aftercooler for cooling the intake air compressed by the supercharger. Therefore, the lubricating oil can be cooled by low-temperature cooling water of about 60 ° C. after heat exchange in the aftercooler, regardless of the cooling water temperature of the engine body. So first,
The cooling in the aftercooler improves the cooling efficiency of the supply air, increases the air flow rate, and increases the engine output. Since the lubricating oil cooler for the engine body is cooled by the cooling water heated by the aftercooler, the lubricating oil is appropriately cooled and the friction horsepower of each sliding portion in the engine body is reduced.
Further, by controlling the amount of cooling water, it is possible to secure lubricating oil over an arbitrary wide temperature range, so that abrasion and thermal fatigue in sliding parts are prevented, and the durability life of parts can be further improved. Since the temperature of the cooling water of the engine body is maintained at the optimum state during combustion without being influenced by the lubricating oil temperature, the combustion is improved, and the operation in which the exhaust color and the like are optimized can be performed.
第１図は本発明実施例にもとづくエンジン用潤滑油冷却
装置の冷却水回路図、第２図は従来技術にもとづくエン
ジン用潤滑油冷却装置の冷却水回路図である。 1:冷却水回路、2:冷却水ポンプ、3:潤滑油クーラ、4:エ
ンジン本体、5:サーモスタット、6:熱交換器、7:冷却水
ポンプ、8:過給機、9:冷却水回路、10:冷却水ポンプ、1
1:アフタクーラFIG. 1 is a cooling water circuit diagram of a lubricating oil cooling device for an engine based on an embodiment of the present invention, and FIG. 2 is a cooling water circuit diagram of a lubricating oil cooling device for an engine based on the prior art. 1: cooling water circuit, 2: cooling water pump, 3: lubricating oil cooler, 4: engine body, 5: thermostat, 6: heat exchanger, 7: cooling water pump, 8: supercharger, 9: cooling water circuit , 10: cooling water pump, 1
1: Aftercooler
Claims (1)
該エンジンに装着された過給機（８）で圧縮された吸入
空気の冷却系統（９）とがそれぞれ独立してなるエンジ
ンの冷却水回路（1,9）を形成すると共に、前記２系統
の冷却水回路（1,9）に機外又は機内に配設された冷却
水ポンプ（７）により機外より導入する冷却水と熱交換
する熱交換器（６）を共有するように配設したエンジン
の冷却水回路の構成において、過給機（８）により圧縮
された吸入空気を冷却するアフタクーラ（11）の下流側
の冷却水管路に連通してエンジン本体用潤滑油クーラ
（３）を配設したことを特徴とするエンジン用 潤滑油
冷却装置。1. A cooling system (1) for an engine body (4),
The cooling system (9, 9) for the intake air compressed by the supercharger (8) mounted on the engine forms an independent cooling water circuit (1, 9) for the engine. A cooling water pump (7) arranged outside or inside the machine shares a heat exchanger (6) that exchanges heat with cooling water introduced from outside the machine in the cooling water circuit (1, 9). In the configuration of the engine cooling water circuit, an engine body lubricating oil cooler (3) is provided in communication with a cooling water pipe downstream of the aftercooler (11) for cooling the intake air compressed by the supercharger (8). A lubricating oil cooling device for engines, which is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017258A JP3062761B2 (en) | 1990-01-26 | 1990-01-26 | Engine lubricating oil cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017258A JP3062761B2 (en) | 1990-01-26 | 1990-01-26 | Engine lubricating oil cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03222807A JPH03222807A (en) | 1991-10-01 |
| JP3062761B2 true JP3062761B2 (en) | 2000-07-12 |
Family
ID=11938938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017258A Expired - Lifetime JP3062761B2 (en) | 1990-01-26 | 1990-01-26 | Engine lubricating oil cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3062761B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170075377A (en) * | 2015-12-23 | 2017-07-03 | 대우조선해양 주식회사 | System And Method For Load Changing Of Ship |
-
1990
- 1990-01-26 JP JP2017258A patent/JP3062761B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170075377A (en) * | 2015-12-23 | 2017-07-03 | 대우조선해양 주식회사 | System And Method For Load Changing Of Ship |
| KR102010878B1 (en) * | 2015-12-23 | 2019-08-14 | 대우조선해양 주식회사 | System And Method For Load Changing Of Ship |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03222807A (en) | 1991-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6604515B2 (en) | Temperature control for turbocharged engine | |
| JPS5827810A (en) | Engine cooling apparatus | |
| US8464669B2 (en) | Cooling circuit for an internal combustion engine | |
| JPS6227248B2 (en) | ||
| JPS5853172B2 (en) | Heat exchange equipment for charging air of internal combustion engines | |
| KR20020045822A (en) | High/Low Temperature Water Cooling System | |
| AU2002309927A1 (en) | Temperature control for turbocharged engine | |
| JP2006509146A (en) | Cooling system | |
| DE50012122D1 (en) | Liquid-cooled internal combustion engine | |
| GB1438775A (en) | Cooling-water circuit for a supercharged internal combustion piston engine | |
| JP2011508851A (en) | Exhaust gas recirculation cooling circuit | |
| JP5898174B2 (en) | Cooling device for engine exhaust gas recirculation circuit | |
| CN109139224A (en) | A kind of engine dual cycle cooling system | |
| US4513695A (en) | Intercooler bypass return in an internal combustion engine | |
| JP3062761B2 (en) | Engine lubricating oil cooling system | |
| JP2003278608A (en) | Egr device | |
| US7249576B2 (en) | Low temperature thermostat housing system for an engine | |
| US3743452A (en) | Liquid cooling system for rotary piston engines | |
| JPS62279225A (en) | Cooling device for internal combustion engine | |
| JP4670737B2 (en) | Engine cooling system | |
| JPH051536A (en) | Engine oil cooler | |
| US10858981B2 (en) | Water jacket of engine and engine cooling system having the same | |
| JPS63235623A (en) | Turbocharger cooling structure | |
| EP3926153B1 (en) | A conditioning apparatus for an engine and a control method thereof | |
| JPS6043118A (en) | Cooling apparatus for internal-combustion engine |