CN109488438B - Cooling system with DCT (discrete cosine transformation) cooling large circulation loop - Google Patents
Cooling system with DCT (discrete cosine transformation) cooling large circulation loop Download PDFInfo
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- CN109488438B CN109488438B CN201811375923.XA CN201811375923A CN109488438B CN 109488438 B CN109488438 B CN 109488438B CN 201811375923 A CN201811375923 A CN 201811375923A CN 109488438 B CN109488438 B CN 109488438B
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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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
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/028—Cooling cylinders and cylinder heads in series
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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
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Details Of Gearings (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a cooling system with a DCT cooling large circulation loop, which comprises a small circulation flow path and a large circulation flow path, wherein: the small circulation flow path comprises a first small flow path, and the first small flow path is formed by returning cooling liquid to the thermostat after the cooling liquid sequentially passes through the thermostat, a water pump, a cylinder body water jacket, a cylinder cover water jacket and a DCT cooler; the large circulation flow path comprises a first large flow path, and the first large flow path is formed by returning cooling liquid to the radiator after the cooling liquid sequentially passes through the radiator, the DCT cooler, the thermostat, the water pump, the cylinder water jacket and the cylinder cover water jacket. Compared with the prior art, the radiator is connected into the cooling circulation of the DCT gearbox in the large circulation flow path, and the low-temperature cooling liquid passing through the radiator is used for cooling the DCT gearbox, so that the cooling efficiency is improved, and the problem of overhigh oil temperature of the DCT gearbox is solved.
Description
Technical Field
The invention relates to an engine cooling system, in particular to a cooling system with a DCT cooling large circulation loop.
Background
When the engine and the DCT transmission are operated, a large amount of heat is generated, and in order to allow the relevant parts to stably operate at high temperature and high pressure, the engine and the DCT transmission must dissipate the excessive heat. The automobile cooling system has the function of timely dissipating partial heat absorbed by heated parts, and ensuring that an engine and a DCT (discrete cosine transformation) gearbox work in an optimum temperature state. The design of the cooling system often requires adaptive matching development according to different engine cooling types.
The existing DCT gearbox cooling cycle only participates in a small cycle, and a radiator is not involved in the circulating path. When the water temperature rises to 80 ℃, the DCT thermostat is closed, and the DCT gearbox cooling liquid circulates in the gearbox, does not participate in small circulation of the engine, and is convenient for rapid temperature rise. When the water temperature rises to 80 ℃, the DCT thermostat is opened, the cooling liquid from the water outlet of the engine enters the DCT gearbox, the cooling liquid passes through the DCT gearbox, the heat is taken out, and the cooling liquid enters the engine again through the thermostat at the water inlet of the engine. When the automobile runs under severe working conditions such as climbing, the water outlet temperature of the engine is high, the gearbox generates more heat, the cooling effect of the DCT gearbox circulating cooling loop on the DCT gearbox is poor, and the performance of the DCT gearbox is reduced due to overhigh temperature.
Disclosure of Invention
The invention aims to provide a cooling system with a DCT (dual-clutch transmission) cooling large circulation loop, which aims to solve the technical problems that the oil temperature of a DCT (dual-clutch transmission) gearbox is too high under the severe working condition of an automobile in the prior art, the cost is greatly increased by adding an additional cooling device, and the arrangement space in a generator cabin is insufficient.
The invention provides a cooling system with a DCT cooling large circulation loop, which comprises a small circulation flow path and a large circulation flow path, wherein:
the small circulation flow path comprises a first small flow path, and the first small flow path is formed by returning cooling liquid to the thermostat after the cooling liquid sequentially passes through the thermostat, a water pump, a cylinder body water jacket, a cylinder cover water jacket and a DCT cooler;
the large circulation flow path comprises a first large flow path, and the first large flow path is formed by returning cooling liquid to the radiator after the cooling liquid sequentially passes through the radiator, the DCT cooler, the thermostat, the water pump, the cylinder water jacket and the cylinder cover water jacket.
In the cooling system with the DCT cooling large circulation loop, it is preferable that an electrically controlled switch is provided on a pipeline connecting the DCT cooler and the cylinder head water jacket.
The cooling system with the DCT cooling large circulation loop as described above, wherein preferably, the bottom of the radiator is provided with a lower water chamber, the lower water chamber is divided into a first lower water chamber and a second lower water chamber by a partition plate, the first lower water chamber is provided with a first interface, the first interface is provided with an electromagnetic valve, one side of a water outlet of the electromagnetic valve is communicated with a water inlet of the DCT cooler through a first branch, the other side of the water outlet of the electromagnetic valve is communicated with the thermostat through a second branch, the second lower water chamber is provided with a second interface, and the second interface is communicated with the second branch.
In the cooling system with a DCT-cooling large circulation circuit as described above, it is preferable that the small circulation flow path further includes a second small flow path in which the coolant returns to the thermostat after passing through the thermostat, the water pump, the cylinder water jacket, the oil cooler, and the cylinder water jacket in this order.
In the cooling system with a DCT-cooling large circulation circuit as described above, it is preferable that the large circulation flow path further includes a second large flow path through which the coolant returns to the thermostat after passing through the thermostat, the water pump, the cylinder water jacket, the oil cooler, the cylinder water jacket, and the radiator in this order.
In the cooling system with a DCT-cooling large circulation circuit as described above, it is preferable that the small circulation passage further includes a third small passage through which the coolant returns to the thermostat after passing through the thermostat, the water pump, the block water jacket, the head water jacket, and the warm air in this order.
In the cooling system with a DCT-cooling large circulation circuit as described above, it is preferable that the small circulation flow path further includes a fourth small flow path, and the coolant returns to the thermostat after passing through the thermostat, the water pump, the supercharger, the electronic pump, and the expansion tank in this order.
In the cooling system with a DCT-cooling large circulation circuit as described above, it is preferable that the large circulation flow path further includes a third large flow path in which the coolant returns to the thermostat after passing through the thermostat, the water pump, the supercharger, the electronic pump, and the radiator in this order.
The cooling system with the DCT cooling large circulation loop as described above, wherein preferably, a throttle valve and a check valve are sequentially provided on a pipeline connecting the electronic pump and the expansion tank.
Compared with the prior art, the radiator is connected into the cooling circulation of the DCT gearbox in the large circulation flow path, and the low-temperature cooling liquid passing through the radiator is used for cooling the DCT gearbox, so that the cooling efficiency is improved, and the problem of overhigh oil temperature of the DCT gearbox is solved.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Description of reference numerals: 1-thermostat, 2-water pump, 3-cylinder water jacket, 4-cylinder cover water jacket, 5-DCT cooler, 6-radiator, 7-first lower water chamber, 8-second lower water chamber, 9-first interface, 10-second interface, 11-electromagnetic valve, 12-oil cooler, 13-warm air, 14-supercharger, 15-electronic pump, 16-throttle valve, 17-one-way valve, 18-electronic control switch, 19-first branch, 20-second branch and 21-expansion kettle.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As shown in fig. 1, an embodiment of the present invention provides a cooling system with a large DCT cooling circulation loop, including a small circulation flow path and a large circulation flow path, wherein:
when the small circulation flow path is used, the thermostat 1 is closed, the cooling liquid in the radiator 6 cannot pass through the thermostat 1 and cannot enter a large circulation, the small circulation flow path comprises a first small flow path, and the first small flow path is formed in a way that the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the cylinder water jacket 3, the cylinder cover water jacket 4 and the DCT cooler 5 in sequence.
When the temperature of the engine water gradually rises, the thermostat 1 is opened, the cooling liquid in the radiator 6 starts to flow, the cooling system enters a large circulation flow path working state, the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the cylinder water jacket 3, the cylinder head water jacket 4 and the radiator 6 in sequence, in addition, the large circulation flow path also comprises a first large flow path, and the first large flow path is that the cooling liquid returns to the radiator 6 after passing through the radiator 6, the DCT cooler 5, the thermostat 1, the water pump 2, the cylinder water jacket 3 and the cylinder head water jacket 4 in sequence. Therefore, on the basis of the traditional large circulation, a DCT gearbox circulation circuit is added, the DCT gearbox is guaranteed to be capable of improving cooling efficiency when being overheated, and the DCT gearbox is enabled to work at a proper temperature all the time.
Furthermore, an electric control switch 18 is arranged on a pipeline connecting the DCT cooler 5 and the cylinder cover water jacket 4.
When the water temperature of the engine is lower than 80 ℃, the electric control switch 18 of the DCT cooling loop is kept closed, but a given leakage amount exists at the moment, and the leakage amount is a necessary requirement, so that the DCT transmission box is heated at a low temperature, and the efficiency of a heat engine is improved. When the temperature is higher than 80 ℃, the electric control switch 18 is opened, the cooling liquid enters the DCT cooler 5, and the DCT cooler 5 enters a normal circulation cooling mode.
Further, the bottom of the radiator 6 is provided with a water outlet chamber, the water outlet chamber is divided into a first water outlet chamber 7 and a second water outlet chamber 8 by a partition plate, the first water outlet chamber 7 is provided with a first interface 9, the first interface 9 is provided with an electromagnetic valve 11, one side of a water outlet of the electromagnetic valve 11 is communicated with a water inlet of the DCT cooler 5 through a first branch 19, the other side of the water outlet of the electromagnetic valve 11 is communicated with the thermostat 1 through a second branch 20, the second water outlet chamber 8 is provided with a second interface 10, and the second interface 10 is communicated with the second branch 20.
The solenoid valve 11 is divided into two states: state I: the first branch 19 is closed and the second branch 20 is open; and state II: the first branch 19 is open and the second branch 20 is open.
When the temperature of the DCT transmission is normal, the cooling cycle is in the traditional large cycle, the electronic control switch 18 is opened, the thermostat 1 is opened, the electromagnetic valve 11 is in the state I, and the low-temperature cooling liquid in the first lower water chamber 7 is converged with the cooling liquid in the second lower water chamber 8 after passing through the electromagnetic valve 11 and enters the engine through the thermostat 1. At this time, the first large flow path does not work, and is consistent with the traditional cooling large circulation.
When the DCT gearbox overheating is detected, the electronically controlled switch 18 is closed. The electromagnetic valve 11 is switched to be in a state II, at the moment, the low-temperature cooling liquid in the second lower water chamber 8 normally works according to the traditional large circulation, the low-temperature cooling liquid in the first lower water chamber 7 enters the DCT cooler 5 through the first branch 19 after passing through the electromagnetic valve 11, and the low-temperature cooling liquid is used for cooling the DCT gearbox, so that the cooling efficiency of the DCT gearbox is improved. At the moment, the first large flow path and the traditional large circulation work simultaneously, the requirement of cooling the engine is met, and meanwhile the cooling efficiency of the DCT gearbox is improved.
The small circulation flow path further comprises a second small flow path, and the second small flow path is that the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the cylinder water jacket 3, the oil cooler 12 and the cylinder water jacket 3 in sequence. The large circulation flow path further comprises a second large flow path, and the second large flow path is that the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the cylinder water jacket 3, the oil cooler 12, the cylinder water jacket 3 and the radiator 6 in sequence.
The small circulation flow path further comprises a third small flow path, and the third small flow path is that the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the cylinder water jacket 3, the cylinder cover water jacket 4 and the warm air 13 in sequence.
The small circulation flow path further comprises a fourth small flow path, and the fourth small flow path is that the cooling liquid returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the supercharger 14, the electronic pump 15 and the expansion kettle 21 in sequence. The large circulation flow path further includes a third large flow path through which the coolant returns to the thermostat 1 after passing through the thermostat 1, the water pump 2, the supercharger 14, the electronic pump 15, and the radiator 6 in this order.
The electronic pump 15 is inactive when the engine is active, and in this case acts as a damping element in the circuit. When the engine is shut down, the electronic pump 15 starts to continue to work, and the supercharger 14 is continuously cooled, so that the possible heat damage risk of the supercharger 14 after the engine is hot-dipped is eliminated, and the continuous running time is controlled by a calibration strategy.
In order to prevent the cooling liquid from flowing backwards, a throttle valve 16 and a one-way valve 17 are arranged on the pipeline connecting the electronic pump 15 and the expansion kettle 21 in sequence, so that the cooling liquid can only flow from the electronic pump 15 to the expansion kettle 21.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (7)
1. A cooling system with a large DCT cooling circulation circuit comprising a small circulation flow path and a large circulation flow path, wherein:
the small circulation flow path comprises a first small flow path, and the first small flow path is formed by returning cooling liquid to the thermostat after the cooling liquid sequentially passes through the thermostat, a water pump, a cylinder body water jacket, a cylinder cover water jacket and a DCT cooler; the method is characterized in that:
the large circulation flow path comprises a first large flow path, and the first large flow path is formed by returning cooling liquid to the radiator after the cooling liquid sequentially passes through the radiator, the DCT cooler, the thermostat, the water pump, the cylinder water jacket and the cylinder cover water jacket;
an electric control switch is arranged on a pipeline connecting the DCT cooler and the cylinder cover water jacket;
the radiator comprises a radiator and is characterized in that a lower water chamber is arranged at the bottom of the radiator and is divided into a first lower water chamber and a second lower water chamber by a partition plate, the first lower water chamber is provided with a first interface, an electromagnetic valve is arranged on the first interface, one side of a water outlet of the electromagnetic valve is communicated with a water inlet of a DCT cooler through a first branch, the other side of the water outlet of the electromagnetic valve is communicated with a thermostat through a second branch, the second lower water chamber is provided with a second interface, and the second interface is communicated with the second branch.
2. The cooling system with a large DCT cooling circulation circuit according to claim 1, wherein: the small circulation flow path also comprises a second small flow path, and the second small flow path is formed by enabling the cooling liquid to sequentially pass through the thermostat, the water pump, the cylinder water jacket, the oil cooler and the cylinder water jacket and then return to the thermostat.
3. The cooling system with a large DCT cooling circulation circuit according to claim 2, wherein: the large circulation flow path also comprises a second large flow path, and the second large flow path is that the cooling liquid returns to the thermostat after passing through the thermostat, the water pump, the cylinder water jacket, the oil cooler, the cylinder water jacket and the radiator in sequence.
4. The cooling system with a large DCT cooling circulation circuit according to claim 1, wherein: the small circulation flow path further comprises a third small flow path, and the third small flow path is that the cooling liquid returns to the thermostat after passing through the thermostat, the water pump, the cylinder water jacket, the cylinder cover water jacket and the warm air in sequence.
5. The cooling system with a large DCT cooling circulation circuit according to claim 1, wherein: the small circulation flow path also comprises a fourth small flow path, and the fourth small flow path is that the cooling liquid returns to the thermostat after sequentially passing through the thermostat, the water pump, the supercharger, the electronic pump and the expansion kettle.
6. The cooling system with a large DCT cooling circulation circuit according to claim 5, wherein: the large circulation flow path further comprises a third large flow path, and the third large flow path is that the cooling liquid returns to the thermostat after passing through the thermostat, the water pump, the supercharger, the electronic pump and the radiator in sequence.
7. The cooling system with a large DCT cooling circulation circuit according to claim 6, wherein: and a throttle valve and a one-way valve are sequentially arranged on a pipeline connected with the electronic pump and the expansion kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811375923.XA CN109488438B (en) | 2018-11-19 | 2018-11-19 | Cooling system with DCT (discrete cosine transformation) cooling large circulation loop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811375923.XA CN109488438B (en) | 2018-11-19 | 2018-11-19 | Cooling system with DCT (discrete cosine transformation) cooling large circulation loop |
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| CN109488438A CN109488438A (en) | 2019-03-19 |
| CN109488438B true CN109488438B (en) | 2020-10-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110273746B (en) * | 2019-04-29 | 2024-02-02 | 江铃汽车股份有限公司 | Parallel type cooling system for vehicle and operation method thereof |
| CN110925400B (en) * | 2019-11-29 | 2021-10-29 | 安徽江淮汽车集团股份有限公司 | Mechanical automatic gearbox and automobile |
| CN113027599A (en) * | 2021-03-30 | 2021-06-25 | 一汽奔腾轿车有限公司 | Cooling system of post-operation supercharger and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19637817A1 (en) * | 1996-09-17 | 1998-03-19 | Laengerer & Reich Gmbh & Co | Device and method for cooling and preheating |
| JPH10238343A (en) * | 1997-02-25 | 1998-09-08 | Toyo Radiator Co Ltd | Radiator for vehicle |
| CN101900496B (en) * | 2009-05-27 | 2012-05-23 | 比亚迪股份有限公司 | Combined radiator |
| US9022647B2 (en) * | 2012-03-30 | 2015-05-05 | Ford Global Technologies, Llc | Engine cooling system control |
| US9222571B2 (en) * | 2013-09-13 | 2015-12-29 | Gm Global Technology Operations, Llc | Temperature management system for transmission using split engine cooling |
| CN103806999B (en) * | 2014-03-06 | 2016-08-17 | 安徽江淮汽车股份有限公司 | A kind of engine-cooling system |
| CN105257383B (en) * | 2015-09-30 | 2017-10-03 | 安徽江淮汽车集团股份有限公司 | A kind of engine-cooling system |
| CN205638675U (en) * | 2016-05-27 | 2016-10-12 | 长城汽车股份有限公司 | Hydroecium and radiator assembly of vehicle radiator |
| CN206655735U (en) * | 2017-04-28 | 2017-11-21 | 长城汽车股份有限公司 | Cooling system of vehicle and vehicle |
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