CN104797793A - Cooling system and method for an internal combustion engine - Google Patents
Cooling system and method for an internal combustion engine Download PDFInfo
- Publication number
- CN104797793A CN104797793A CN201280077040.5A CN201280077040A CN104797793A CN 104797793 A CN104797793 A CN 104797793A CN 201280077040 A CN201280077040 A CN 201280077040A CN 104797793 A CN104797793 A CN 104797793A
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- CN
- China
- Prior art keywords
- cooling
- temperature
- loop
- heat exchanger
- cooling medium
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
- F01P3/207—Cooling circuits not specific to a single part of engine or machine liquid-to-liquid heat-exchanging relative to marine vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/02—Marine engines
- F01P2050/06—Marine engines using liquid-to-liquid heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/02—Intercooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/04—Lubricant cooler
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Supercharger (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The cooling system for an internal combustion engine (1) comprises a high temperature cooling circuit (2), a low temperature cooling circuit (3), and a heat ex- changer (4) for transferring heat from the high temperature cooling circuit (2) to the low temperature cooling circuit (3).
Description
Technical field
The present invention relates to a kind of according to claim 1 as described in the preamble, for the cooling system of explosive motor.The invention still further relates to a kind of according to another independent claims as described in the preamble, for cooling the method for the cooling medium in the High-temperature cooling loop of explosive motor.
Background technique
The such as large combustion engine of boats and ships or power station motor is typically provided with two cooling circuits separated, i.e. high temperature (HT) loop and low temperature (LT) loop.HT loop is used for the temperature of control cylinder cover and cylinder head.HT loop is also connected to the high-temperature portion of twin-stage intercooler (double-stage charge air cooler).LT loop is used as low-temp. portion and the lube oil cooler of intercooler.Based on engine type, the temperature in HT loop is about 70 DEG C to 102 DEG C usually, and the temperature in LT loop is about 38 DEG C to 50 DEG C usually.In order to ensure the also safety ignition of low-quality heavy fuel and burning when low-load, in order to make the temperature fluctuation in the parts of cylinder minimum and in order to prevent the corrosion that may cause because of supercooling, expect, in HT loop, there is relatively high temperature.
Especially in modern four stroke engine, main because more effectively and stronger turbosupercharger, be achieved the performance of improvement.High pressure-charging air pressure causes the high pressure-charging air temperature before intercooler.Its direct result is the temperature rising of the cooling medium in HT loop.If the temperature of cooling medium is increased to higher than 100 DEG C, then the cooling medium in the low voltage section in HT loop has the risk of boiling.The raised temperature of the cooling medium in HT loop is for by especially problem the motor of more actively turbocharging device upgrading.Can be reduced the temperature of cooling medium by the flow velocity increased in HT loop, but this is normally uneconomic and in many cases because the size of the parts of cooling system or even infeasible.
Summary of the invention
The object of this invention is to provide a kind of cooling system for explosive motor of improvement.The feature of the characteristic according to cooling system of the present invention is given in the characteristic of claim 1.Another object of the present invention is to provide improving one's methods of a kind of temperature of cooling medium of the High-temperature cooling loop for reducing explosive motor.The feature of the characteristic of the method is given in the characteristic of another independent claims.
Cooling system according to the present invention comprises High-temperature cooling loop and coolant cooling circuit.Described cooling system is provided with heat exchanger, and this heat exchanger is used for transmitting heat from described High-temperature cooling loop to described coolant cooling circuit.
In the method according to the invention, the cooling medium in High-temperature cooling loop is directed through over-heat-exchanger, and the heat in described heat exchanger is passed to the cooling medium of coolant cooling circuit by the cooling medium from described High-temperature cooling loop.
By described cooling system and cooling means, when not changing the external component of cooling system, the temperature of the cooling medium in described High-temperature cooling loop can be remained in the preferred temperature limit.Described cooling system can be easily applied to the available engine of upgrading with more effective turbo charge system.
According to the embodiment of the present invention, the cooling medium in described High-temperature cooling loop and the cooling medium of described coolant cooling circuit all can be arranged to flow through described heat exchanger.According to another embodiment of the present invention, described heat exchanger is disposed in described coolant cooling circuit, and described High-temperature cooling loop is provided with the parts for optionally cooling medium being directed through described heat exchanger.The described parts for selectivity cooling medium being directed through heat exchanger can comprise selector valve, and this selector valve allows to walk around described heat exchanger.
Accompanying drawing explanation
In more detail embodiments of the present invention are described below with reference to accompanying drawings, wherein:
Fig. 1 schematically shows the cooling system of explosive motor.
Embodiment
Schematically show the cooling system of explosive motor 1 in FIG.Motor 1 is large combustion engine, the master motor of such as boats and ships or auxiliary engine or the motor used in the power station for generating electricity.The cooling system of motor 1 comprises two cooling circuits separated 2,3.Cooling circuit 2,3 is all closed-loop paths.One in cooling circuit 2,3 is High-temperature cooling loop 2, and another is coolant cooling circuit 3, and the temperature of the cooling medium in coolant cooling circuit 3 is lower than the temperature of the cooling medium in High-temperature cooling loop 2.Temperature in High-temperature cooling loop 2 is about 70 DEG C to 105 DEG C usually, and the temperature in coolant cooling circuit is about 35 DEG C to 55 DEG C usually.Cooling medium in cooling circuit 2,3 can be such as water.Cooling medium also can comprise additive, such as, for anticorrosion.Each cooling medium loop 2,3 is equipped with the pump 8,9 for making cooling medium circulate.In the mode of execution of accompanying drawing, cooling system is also provided with external cooling circuit 13, and wherein heat is delivered to external cooling circuit 13 from High-temperature cooling loop 2 and coolant cooling circuit 3.But also can arrange heat exchanger for High-temperature cooling loop 2 and coolant cooling circuit 3, heat is delivered to cooling-air or water in this heat exchanger, just do not need external cooling circuit 13 in this case.External cooling circuit 13 is provided with the pump 12 for making the cooling medium in this loop 13 circulate.External cooling circuit 13 also comprises: low temperature heat exchanger 15, for heat is passed to external cooling circuit 13 from coolant cooling circuit 3; And high-temperature heat exchanger 16, for heat is passed to external cooling circuit 13 from High-temperature cooling loop 2.After high-temperature heat exchanger 16 is disposed in low temperature heat exchanger 15 on the flow direction of the cooling medium of external cooling circuit 13.External cooling circuit 13 can be open loop also can be closed-loop path.External cooling circuit 13 can comprise one or more additional heat exchanger, for heat trnasfer being left the cooling medium of external cooling circuit 13.
In High-temperature cooling loop 2, cooling medium flows to motor 1 from pump 8, and at motor place, the hot cylinder liner from motor 1 and cylinder head are delivered to cooling medium.The cooling medium in High-temperature cooling loop 2 flows to the first intercooler 7 from motor 1.First intercooler 7 is connected to the compressor 11 of turbosupercharger 17.In the first intercooler 7, heat is delivered to the cooling medium in High-temperature cooling loop 2 from pressurized air.If motor 1 is provided with two turbocharging, then the first intercooler 7 also can be disposed between this two-stage.After the first intercooler 7, the pressure in High-temperature cooling loop 2 is generally about 2.5 bar.Cooling medium flow to high-temperature heat exchanger 16 from the first intercooler 7, is delivered to the cooling medium of external cooling circuit 13 in this place's heat from the cooling medium in High-temperature cooling loop 2.Then the cooling medium in High-temperature cooling loop 2 turns back to pump 8 with low temperature.In this level, the pressure of cooling medium is about 1.5 bar usually.
In coolant cooling circuit 3, cooling medium flows to the second intercooler 10 from pump 9.Second intercooler 10 is arranged in the downstream of the first intercooler 7 on the flow direction of pressurized air.In the second intercooler 10, heat is delivered to the cooling medium of coolant cooling circuit 3 from pressurized air.After the second intercooler 10, the pressure in coolant cooling circuit 3 is about 2.5 bar usually.Pressurized air is guided from the second intercooler 10 to set out in the intake manifold of motivation 1.Cooling medium is directed to lube oil cooler 14 from the second intercooler 10, is passed to the cooling medium of coolant cooling circuit 3 in this place's heat from the lubricant oil of motor 1.Cooling medium flows to low temperature heat exchanger 15 from lube oil cooler 14, is delivered to external cooling circuit 13 in this place's heat from the cooling medium of coolant cooling circuit 3.In this level, the pressure of the cooling medium in coolant cooling circuit 3 is about 1.5 bar usually.Coolant cooling circuit 3 is also provided with bypass valve 17 and by-pass line 18.By-pass line 18 and the second intercooler 10 are arranged in parallel.When bypass valve 17 is used in and needs high temperature pressurised air, allow flow through by-pass line 18 and walk around the second intercooler 10 thus.
In order to prevent the cooling medium in superheating High-temperature cooling loop 2, cooling system is provided with heat exchanger 4, for heat to be passed to the cooling medium of coolant cooling circuit 3 from the cooling medium in High-temperature cooling loop 2.High-temperature cooling loop 2 and the cooling medium both coolant cooling circuit 3 all can be arranged to flow through heat exchanger 4.Heat exchanger 4 is liquid liquid heat exchanger thus.In the mode of execution of accompanying drawing, heat exchanger 4 is disposed in coolant cooling circuit 3, and the cooling medium in High-temperature cooling loop 2 can be optionally directed through heat exchanger 4.Heat exchanger 4 is positioned at the downstream of lube oil cooler 14 and the upstream of low temperature heat exchanger 15 in coolant cooling circuit 3.High-temperature cooling loop 2 comprises the parts 5,6 for optionally cooling medium being directed through heat exchanger 4.Parts 5,6 comprise selector valve 5 and the cooling pipe 6 for cooling medium being directed through heat exchanger 4.Cooling pipe 6 is connected to selector valve 5 and is connected to the point being positioned at selector valve 5 downstream in High-temperature cooling loop 2.When not having the risk of cooling medium in superheating High-temperature cooling loop 2, heat exchanger 4 can be bypassed because of selector valve 5.Selector valve 5 can be autoamtic temperature controlling valve, when the temperature of its cooling medium in High-temperature cooling loop 2 exceedes predetermined limit value, cooling medium is guided to heat exchanger 4.
By cooling system according to the present invention, the temperature of the cooling medium in High-temperature cooling loop 2 can be maintained in desired limits.When upgrading existing motor 1 by more effective turbosupercharger 7, this cooling system is particularly favourable.In order to upgrade, existing cooling system only needs very little change.The flow velocity in cooling circuit 2,3,13 and line size need not be changed.
It will be understood by those skilled in the art that the present invention is not limited to above-mentioned mode of execution, but can modify within the scope of the appended claims.Such as, heat exchanger can be disposed in High-temperature cooling loop, and the cooling medium of coolant cooling circuit can be optionally arranged to flow through heat exchanger.Cooling circuit can be arranged to cool except mode of execution shownschematically except other object.Object to be cooled also can be arranged in a different order.
Claims (7)
1. the cooling system for explosive motor (1), this cooling system comprises High-temperature cooling loop (2) and coolant cooling circuit (3), it is characterized in that, described cooling system is provided with heat exchanger (4), and this heat exchanger is used for transmitting heat from described High-temperature cooling loop (2) to described coolant cooling circuit (3).
2. cooling system according to claim 1, it is characterized in that, the cooling medium of described High-temperature cooling loop (2) and the cooling medium of described coolant cooling circuit (3) all can be arranged to flow through described heat exchanger (4).
3. cooling system according to claim 1, it is characterized in that, described heat exchanger (4) is disposed in described coolant cooling circuit (3), and described High-temperature cooling loop (2) is provided with the parts (5,6) for optionally cooling medium being directed through described heat exchanger (4).
4. cooling system according to claim 3, it is characterized in that, described High-temperature cooling loop (2) is provided with selector valve (5), and this selector valve can be used for optionally being guided by cooling medium in described heat exchanger (4) or walking around described heat exchanger (4).
5. cooling system according to claim 4, it is characterized in that, described selector valve (5) is disposed in the downstream of intercooler (7), and the cooling medium of described High-temperature cooling loop (2) is arranged to flow through this intercooler (7).
6. the cooling system according to any one of claim 3 to 5, is characterized in that, described heat exchanger (4) is disposed in the downstream of lube oil cooler (14) in described coolant cooling circuit (3).
7. the method for reducing the temperature of the cooling medium in the High-temperature cooling loop (2) of explosive motor (1), it is characterized in that, the cooling medium of described High-temperature cooling loop (2) is directed through over-heat-exchanger (4), and the heat of described heat exchanger (4) is delivered to the cooling medium of coolant cooling circuit (3) from the cooling medium of described High-temperature cooling loop (2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2012/051222 WO2014091056A1 (en) | 2012-12-10 | 2012-12-10 | Cooling system and method for an internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104797793A true CN104797793A (en) | 2015-07-22 |
Family
ID=47563529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280077040.5A Pending CN104797793A (en) | 2012-12-10 | 2012-12-10 | Cooling system and method for an internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2929159B1 (en) |
| KR (1) | KR101946683B1 (en) |
| CN (1) | CN104797793A (en) |
| WO (1) | WO2014091056A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150658A (en) * | 2016-08-29 | 2016-11-23 | 中车大连机车车辆有限公司 | Cooling control method in diesel engine of diesel locomotive cooling water system separate type |
| CN106351725A (en) * | 2015-07-14 | 2017-01-25 | 保时捷股份公司 | Cooling system for a vehicle |
| CN107044332A (en) * | 2016-12-26 | 2017-08-15 | 潍柴动力股份有限公司 | The cooling system and method for a kind of engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10150552B2 (en) | 2016-02-15 | 2018-12-11 | Southern Towing Company, LLC | Forced flow water circulation cooling for barges |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793634A (en) * | 2004-12-22 | 2006-06-28 | 株式会社电装 | Thermoelectric generator |
| US7264520B1 (en) * | 2006-10-24 | 2007-09-04 | Brunswick Corporation | Cooling system for an outboard motor having both open and closed loop portions |
| CN101397929A (en) * | 2007-09-25 | 2009-04-01 | 福特环球技术公司 | Cooling system with isolated cooling circuits |
| CN101435361A (en) * | 2007-11-15 | 2009-05-20 | 卡特彼勒公司 | Engine cooling system having two cooling circuits |
| CN101749096A (en) * | 2008-12-10 | 2010-06-23 | 曼商用车辆奥地利股份公司 | Drive unit with cooling circuit and separate heat recovery circuit |
| CN102265010A (en) * | 2008-12-31 | 2011-11-30 | 瓦锡兰芬兰有限公司 | Piston engine cooling assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101013871B1 (en) * | 2008-11-21 | 2011-02-14 | 한라공조주식회사 | Integrated heat exchanger having multi divided section for hybrid vehicle |
| DE102011116423A1 (en) * | 2011-10-19 | 2012-05-03 | Daimler Ag | Device for indirect thermal coupling of two cooling circuits in internal combustion engine of vehicle, has heat exchangers thermally coupled with refrigerant cycle, and expansion valves parallelly interconnected with each other |
| DE102011118898A1 (en) * | 2011-11-18 | 2012-06-06 | Daimler Ag | Device for thermal coupling of two cooling circuits in vehicle, has cooling circuits that are formed as high-temperature circuit and low-temperature circuit and are couple by mixing valve in thermal and fluidic manner |
-
2012
- 2012-12-10 WO PCT/FI2012/051222 patent/WO2014091056A1/en active Application Filing
- 2012-12-10 EP EP12816315.1A patent/EP2929159B1/en active Active
- 2012-12-10 KR KR1020157018189A patent/KR101946683B1/en active IP Right Grant
- 2012-12-10 CN CN201280077040.5A patent/CN104797793A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793634A (en) * | 2004-12-22 | 2006-06-28 | 株式会社电装 | Thermoelectric generator |
| US7264520B1 (en) * | 2006-10-24 | 2007-09-04 | Brunswick Corporation | Cooling system for an outboard motor having both open and closed loop portions |
| CN101397929A (en) * | 2007-09-25 | 2009-04-01 | 福特环球技术公司 | Cooling system with isolated cooling circuits |
| CN101435361A (en) * | 2007-11-15 | 2009-05-20 | 卡特彼勒公司 | Engine cooling system having two cooling circuits |
| CN101749096A (en) * | 2008-12-10 | 2010-06-23 | 曼商用车辆奥地利股份公司 | Drive unit with cooling circuit and separate heat recovery circuit |
| CN102265010A (en) * | 2008-12-31 | 2011-11-30 | 瓦锡兰芬兰有限公司 | Piston engine cooling assembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351725A (en) * | 2015-07-14 | 2017-01-25 | 保时捷股份公司 | Cooling system for a vehicle |
| CN106351725B (en) * | 2015-07-14 | 2019-11-08 | 保时捷股份公司 | Cooling system for vehicle |
| CN106150658A (en) * | 2016-08-29 | 2016-11-23 | 中车大连机车车辆有限公司 | Cooling control method in diesel engine of diesel locomotive cooling water system separate type |
| CN107044332A (en) * | 2016-12-26 | 2017-08-15 | 潍柴动力股份有限公司 | The cooling system and method for a kind of engine |
| CN107044332B (en) * | 2016-12-26 | 2019-09-27 | 潍柴动力股份有限公司 | A kind of cooling system and method for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014091056A1 (en) | 2014-06-19 |
| KR101946683B1 (en) | 2019-04-22 |
| EP2929159B1 (en) | 2018-03-21 |
| KR20150092302A (en) | 2015-08-12 |
| EP2929159A1 (en) | 2015-10-14 |
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Application publication date: 20150722 |
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