KR101946683B1 - Cooling system and method for an internal combustion engine - Google Patents
Cooling system and method for an internal combustion engine Download PDFInfo
- Publication number
- KR101946683B1 KR101946683B1 KR1020157018189A KR20157018189A KR101946683B1 KR 101946683 B1 KR101946683 B1 KR 101946683B1 KR 1020157018189 A KR1020157018189 A KR 1020157018189A KR 20157018189 A KR20157018189 A KR 20157018189A KR 101946683 B1 KR101946683 B1 KR 101946683B1
- Authority
- KR
- South Korea
- Prior art keywords
- cooling
- circuit
- cooling circuit
- heat exchanger
- cooling medium
- Prior art date
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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 the internal combustion engine 1 includes a high temperature cooling circuit 2, a low temperature cooling circuit 3 and a heat exchanger 4 for transferring heat from the high temperature cooling circuit 2 to the low temperature cooling circuit 3 .
Description
The present invention relates to a cooling system for an internal combustion engine according to the preamble of
Large internal combustion engines, such as marine or powerplant engines, are often provided with two separate cooling circuits, namely high temperature (HT) and low temperature (LT) circuits. HT circuit is used to control the temperature of the cylinder liners and the cylinder heads. The HT circuit is also connected to the high temperature section of the charge air cooler. The LT circuit is used for the low temperature part of the supply cooler and the lubricant cooler. The temperature in the HT circuit is typically about 70 to 102 DEG C, depending on the engine type, and 38 to 50 DEG C in the LT circuit. The relatively high temperature in the HT circuit is used to ensure safe ignition and combustion of low quality heavy fuels even at low loads, to minimize temperature fluctuations in the components of the cylinders, and to prevent corrosion which may be caused by excessive cooling desirable.
In particular, in modern four-stroke engines, performance gains have been greatly enhanced by more efficient and more powerful superchargers. High air supply pressures cause high air supply temperatures prior to supply air coolers. Its direct consequence is to increase the temperature of the cooling medium in the HT circuit. If the temperature of the cooling medium rises above 100 ° C, there is a risk that the cooling medium will boil at low pressure portions of the HT circuit. The increased temperature of the cooling medium in the HT circuit is problematic, especially in engines upgraded by more efficient superchargers. The temperature of the cooling medium can be lowered by increasing the flow rate in the HT circuit, but this is usually not economical and, in many cases, even possible due to the sizing of the components of the cooling system.
It is an object of the present invention to provide an improved cooling system for an internal combustion engine. The characteristic features of the cooling system according to the invention are given in the characterizing part of
The cooling system according to the present invention comprises a hot and cold cooling circuit. The cooling system is provided with a heat exchanger for transferring heat from the high temperature cooling circuit to the low temperature cooling circuit.
In the process according to the present application, the cooling medium of the hot-air cooling circuit is guided through a heat exchanger in which heat is transferred from the cooling medium of the hot-cold circuit to the cooling medium of the cold-
By means of the cooling system and the cooling method, the temperature of the cooling medium in the high temperature cooling circuit can be maintained within the desired temperature limits without modification of the external components of the cooling system. The cooling system can be readily applied to conventional engines that have been upgraded to more efficient supercharging systems.
According to one embodiment of the invention, the cooling medium of the hot-air cooling circuit and the cooling medium of the cold-cooling circuit may be arranged to flow through the heat exchanger. According to another embodiment of the invention, the heat exchanger is arranged in a cryogenic cooling circuit, and the high temperature cooling circuit is provided with means for selectively guiding the cooling medium through a heat exchanger. The means for selectively guiding the cooling medium through the heat exchanger may include a selector valve that allows bypassing of the heat exchanger.
BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the invention will now be described more fully hereinafter with reference to the accompanying drawings.
Fig. 1 schematically shows a cooling system of an internal combustion engine.
Fig. 1 schematically shows the cooling system of the
In the high
In the
In order to prevent excessive heating of the cooling medium in the high
By means of the cooling system according to the invention, the temperature of the cooling medium in the high
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but may be modified in view of the appended claims. For example, the heat exchanger may be arranged in a high temperature refrigeration circuit, and the cooling medium of the low temperature refrigeration circuit may be selectively arranged to flow through the heat exchanger. The cooling circuits can also be arranged to cool objects other than those shown in the embodiments. Objects to be cooled can also be arranged in a different order.
Claims (7)
The cooling system comprises a high temperature cooling circuit (2), a cryogenic cooling circuit (3) and a heat exchanger (4) for transferring heat from the high temperature cooling circuit (2) to the cryogenic cooling circuit (3)
The heat exchanger (4) is arranged in the cryogenic cooling circuit (3)
The high temperature cooling circuit 2 is provided with a selector valve 5 which can be used to selectively guide the cooling medium to the heat exchanger 4 or to bypass the heat exchanger 4,
Characterized in that the selector valve (5) is arranged downstream from the supply air cooler (7) and the cooling medium of the hot-air cooling circuit (2) flows through the supply air cooler.
Characterized in that the cooling medium of the high temperature cooling circuit (2) and the cooling medium of the low temperature cooling circuit (3) can be arranged to flow through the heat exchanger (4).
Characterized in that the heat exchanger (4) is arranged downstream from the lubricant cooler (14) in the cryogenic cooling circuit (3).
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 (2)
Publication Number | Publication Date |
---|---|
KR20150092302A KR20150092302A (en) | 2015-08-12 |
KR101946683B1 true KR101946683B1 (en) | 2019-04-22 |
Family
ID=47563529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020157018189A KR101946683B1 (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) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015111407B4 (en) * | 2015-07-14 | 2024-08-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Cooling system for a vehicle |
US10150552B2 (en) | 2016-02-15 | 2018-12-11 | Southern Towing Company, LLC | Forced flow water circulation cooling for barges |
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 |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006177265A (en) | 2004-12-22 | 2006-07-06 | Denso Corp | Thermoelectric power generation device |
US20090126657A1 (en) | 2007-11-15 | 2009-05-21 | Mokire Mahesh K | Engine Cooling System Having Two Cooling Circuits |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7264520B1 (en) * | 2006-10-24 | 2007-09-04 | Brunswick Corporation | Cooling system for an outboard motor having both open and closed loop portions |
US20090078220A1 (en) * | 2007-09-25 | 2009-03-26 | Ford Global Technologies, Llc | Cooling System with Isolated Cooling Circuits |
KR101013871B1 (en) * | 2008-11-21 | 2011-02-14 | 한라공조주식회사 | Integrated heat exchanger having multi divided section for hybrid vehicle |
AT507096B1 (en) * | 2008-12-10 | 2010-02-15 | Man Nutzfahrzeuge Oesterreich | DRIVE UNIT WITH COOLING CIRCUIT AND SEPARATE HEAT RECOVERY CIRCUIT |
FI20086256A (en) * | 2008-12-31 | 2010-07-01 | Waertsilae Finland Oy | Reciprocating Engine |
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 KR KR1020157018189A patent/KR101946683B1/en active IP Right Grant
- 2012-12-10 WO PCT/FI2012/051222 patent/WO2014091056A1/en active Application Filing
- 2012-12-10 CN CN201280077040.5A patent/CN104797793A/en active Pending
- 2012-12-10 EP EP12816315.1A patent/EP2929159B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006177265A (en) | 2004-12-22 | 2006-07-06 | Denso Corp | Thermoelectric power generation device |
US20090126657A1 (en) | 2007-11-15 | 2009-05-21 | Mokire Mahesh K | Engine Cooling System Having Two Cooling Circuits |
Also Published As
Publication number | Publication date |
---|---|
WO2014091056A1 (en) | 2014-06-19 |
CN104797793A (en) | 2015-07-22 |
EP2929159A1 (en) | 2015-10-14 |
EP2929159B1 (en) | 2018-03-21 |
KR20150092302A (en) | 2015-08-12 |
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