CN101463752A - Cooling system of engine - Google Patents
Cooling system of engine Download PDFInfo
- Publication number
- CN101463752A CN101463752A CNA2008101866190A CN200810186619A CN101463752A CN 101463752 A CN101463752 A CN 101463752A CN A2008101866190 A CNA2008101866190 A CN A2008101866190A CN 200810186619 A CN200810186619 A CN 200810186619A CN 101463752 A CN101463752 A CN 101463752A
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- China
- Prior art keywords
- water
- thermoregulator
- engine
- cylinder
- cooling system
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 210000000476 body water Anatomy 0.000 claims abstract description 12
- 239000000110 cooling liquid Substances 0.000 claims description 25
- 239000010721 machine oil Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000012809 cooling fluid Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an engine cooling system, comprising a pump (1), a heater unit (2), an oil cooler (3), an EGR cooler (4), a radiator (5), an expansion tank (6), a thermolator (7), a cylinder body water jacket (8), a cylinder head water jacket (9) and an integrated support (10), wherein, the pump (1), the oil cooler (3) and the thermolator (7) are mounted on the integrated support (10), and the thermolator (7) is a high purity wax thermolator which is arranged at a water inlet; cooling fluid entering the cylinder head water jacket (9) flows out through the back end of the cylinder head, two water outlets are arranged at two sides of the back end of the cylinder head, the water outlet at the air inlet side is connected with the radiator (5), the water outlet at the air outlet side is connected with the heater unit (2), a branch circuit of the heater unit is normally open, and the branch circuit of the heater unit is controlled by the thermolator (7). By increasing the initial operating temperature and lowering the temperature difference between the full operating temperature and the initial operating temperature, the engine cooling system of the invention can improve cooling effect, thus improving economical efficiency of engine gas fuel, and lowering discharge of harmful gases; in addition, the structural arrangement is more compact.
Description
Technical field
The invention belongs to the passenger car field, particularly relate to a kind of cooling system of passenger car water-cooled engine.
Background technique
Existing engine-cooling system, cooling liquid generally is directly to be pumped in the engine cylinder-body by water pump, enter into cylinder cap from the filling pipe end of cylinder pad, come out from cylinder cap then, double-valve type wax formula thermoregulator is installed in cylinder cap water outlet position, and thermoregulator is controlled big or small circuit according to the difference of coolant temperature and is opened and closed.Thermoregulator generally is arranged in motor water outlet position, simultaneously, because the standard-sized sheet temperature is too big with the temperature difference of just opening temperature, the temperature difference can reach 15 ℃, the temperature control of thermoregulator is very inaccurate, in the warming-up process of motor, causes the unusual fluctuations of engine temperature easily like this, prolong the warm-up period of motor, cause the discharging and the fuel economy variation of motor.In patent CN02253374.5, the improved cooling system, given account that the coupled position of improving middle cooling pipe improves the warming-up process of motor.In patent CN200520099942.6, a kind of engine-cooling system, given account by thermoregulator and controlled the rapid warming-up that big or small switch is realized motor.Though these methods can both improve the warming-up effect of motor to a certain extent, along with the emission regulation demands of country is more and more stricter, the warming-up that only adopts these technology can not satisfy motor has required.In addition, the use of various new technologies, a lot of component all need effectively work of cooling, if arrange unreasonablely, some branch road will occur and not satisfy traffic requirement.
Summary of the invention
The purpose of this invention is to provide a new work engine cooling system, guarantee the cooling performance that this motor and parts thereof are good, make the cooling effect of motor best compacter with layout.To achieve these goals, the present invention adopts following technological scheme.
A kind of engine-cooling system, comprise water pump, warm-air drier, machine oil cooler, EGR (gas recirculation system) cooler, radiator, expansion tank, thermoregulator, cylinder body water jacket, cylinder cap water jacket and integrated stand, water pump wherein, machine oil cooler and thermoregulator are installed on the integrated stand, it is characterized in that: thermoregulator is arranged in water inlet, the cooling liquid that enters into the cylinder cap water jacket flows out from the rear end of cylinder cap, be divided into two water outlets in the both sides, rear end of cylinder cap, air inlet side water outlet connects radiator, the exhaust side water outlet connects warm-air drier, the warm-air drier branch road is a normal open, and the radiator branch road is controlled by thermoregulator.
Cylinder body water jacket links to each other with the cylinder cap water jacket by the cylinder cap water intake on the cylinder pad, cooling liquid flows to cylinder body water jacket by the water outlet of water pump above integrated stand, cooling liquid is divided into two-way, the water hole of leading up on the cylinder head gasket enters the cylinder cap water jacket, draw from cylinder body on another road, is used for cooling off EGR gas.
When motor was just started working, the temperature of cooling liquid was lower than the unlatching temperature of thermoregulator, and at this moment, major cycle is closed, and motor only carries out short circle.Described major cycle is meant that cooling liquid comes out from the air inlet side water outlet of cylinder cap, through behind the radiator, flows to this circulation branch road in the thermoregulator; Described short circle is meant that cooling liquid flows to through the drainage hole of cylinder pad the integrated stand on the cylinder body from cylinder cap air inlet side, flows to this circulation branch road in the thermoregulator then.
The water inlet of water pump is got back to then at pump outlet in the intake position of machine oil cooler branch road.
Thermoregulator adopts highly purified wax formula thermoregulator, the switch of the auxiliary-valve control short circle branch road on the thermoregulator.
The intake of cooler for recycled exhaust gas is got back to the water outlet position of cylinder cap major cycle then on the cylinder body of the exhaust side of engine.
The present invention can establish under the constant situation of maximum temperature at motor, by dwindling the interval of just opening temperature and standard-sized sheet temperature, the temperature controlling range of cooling system is reduced, and reaches the purpose that improves fuel economy, reduces noxious gas emission.
The present invention has improved thermoregulator, adopts highly purified wax formula thermoregulator, improves and just opens temperature, reduces the standard-sized sheet temperature of thermoregulator and the temperature difference of just opening temperature, has improved the fuel economy of motor, has reduced noxious gas emission.The arrangement of thermoregulator adopts the water inlet formula to arrange, improves the temperature control precision of engine coolant.
Machine oil cooler is installed in above the integrated stand, and the position of intake is exactly a pump outlet, gets back to the water inlet of water pump then, guaranteed the coolant rate of machine oil cooler like this, improved cooling effect, layout does not need pipeline to connect so simultaneously, arranges compacter.
Cooler for recycled exhaust gas is to get cooling liquid from cylinder body water jacket of engine, and the pressure of cooling liquid herein is bigger, and coolant temperature is also lower, can improve the cooling effect of EGR.
Description of drawings
Fig. 1 is that engine-cooling system of the present invention is arranged schematic representation;
Fig. 2 is a motor short circle liquid circulation schematic representation of the present invention;
Fig. 3 is a motor major cycle liquid circulation schematic representation of the present invention.
Description of reference numerals:
1-water pump; 2-warm-air drier; 3-machine oil cooler; 4-cooler for recycled exhaust gas;
5-radiator; 6-expansion tank; 7-thermoregulator; 8-cylinder body water jacket;
9-cylinder cap water jacket; 10-integrated stand
Embodiment
Below in conjunction with accompanying drawing the present invention is carried out concrete description.
Shown in Figure 1 is that engine-cooling system is arranged schematic representation.Whole engine-cooling system comprises water pump 1, warm-air drier 2, machine oil cooler 3, cooler for recycled exhaust gas 4, radiator 5, expansion tank 6, thermoregulator 7, cylinder body water jacket 8, cylinder cap water jacket 9 and integrated stand 10.Water pump 1, machine oil cooler 3 and thermoregulator 7 are installed on the integrated stand 10, and thermoregulator 7 adopts the water inlet arrangement, can improve the temperature control precision of engine coolant like this.Cylinder body water jacket 8 links to each other with cylinder cap water jacket 9 by the cylinder cap water intake on the cylinder pad.Be cast with water pump volute chamber above the integrated stand 10, cooling liquid flows to cylinder body water jacket 8 by the water outlet of water pump 1 above integrated stand 10, and cooling liquid is divided into two-way, and the water hole of leading up on the cylinder head gasket enters cylinder cap water jacket 9, draw from cylinder body on another road, is used for cooling off EGR gas.The cooling liquid that enters into cylinder cap water jacket 9 flows out from the rear end of cylinder cap, is divided into two water outlets in the both sides, rear end of cylinder cap, and air inlet side water outlet connects radiator 5, and the exhaust side water outlet connects warm-air drier 2.The warm-air drier branch road is a normal open, and the radiator branch road is by being installed in thermoregulator 7 controls above the integrated stand 10.
When motor is just started working, the temperature of cooling liquid is lower than the unlatching temperature of thermoregulator 7, at this moment, as shown in Figure 2, major cycle is closed, and motor only carries out short circle, and so-called major cycle is meant that cooling liquid comes out from the motor water outlet of cylinder cap air inlet side, through behind the radiator, flow to this circulation branch road in the thermoregulator then; So-called short circle is meant that cooling liquid flows to through the drainage hole of cylinder pad the integrated stand on the cylinder body from cylinder cap air inlet side, flows to this circulation branch road in the thermoregulator then.Help improving rapidly the temperature of motor like this, reduce the discharging and the oil consumption of motor.When the temperature of cooling liquid was higher than the unlatching temperature of thermoregulator 7, major cycle this moment was opened, and short circle is closed, and cooling liquid is only carried out major cycle, as shown in Figure 3.
The water inlet of water pump is got back to then just at pump outlet in the intake position of machine oil cooler 10 branch roads, has guaranteed the flow of the cooling liquid of machine oil cooler like this.
Thermoregulator 7 adopts highly purified wax formula thermoregulator, is installed in the ingress of water pump, controls big or small circuit according to the temperature difference of cooling liquid and opens and closes.
Claims (8)
1, a kind of engine-cooling system, comprise water pump (1), warm-air drier (2), machine oil cooler (3), cooler for recycled exhaust gas (4), radiator (5), expansion tank (6), thermoregulator (7), cylinder body water jacket (8), cylinder cap water jacket (9) and integrated stand (10), water pump (1) wherein, machine oil cooler (3) and thermoregulator (7) are installed on the integrated stand (10), it is characterized in that: thermoregulator (7) is arranged in water inlet, the cooling liquid that enters into cylinder cap water jacket (9) flows out from the rear end of cylinder cap, be divided into two water outlets in the both sides, rear end of cylinder cap, air inlet side water outlet connects radiator (5), the exhaust side water outlet connects warm-air drier (2), the warm-air drier branch road is a normal open, and the radiator branch road is by thermoregulator (7) control.
2, engine-cooling system as claimed in claim 1, it is characterized in that: cylinder body water jacket (8) links to each other with cylinder cap water jacket (9) by the cylinder cap water intake on the cylinder pad, cooling liquid flows to cylinder body water jacket (8) by the water outlet of water pump (1) above integrated stand (10), cooling liquid is divided into two-way, the water hole of leading up on the cylinder head gasket enters cylinder cap water jacket (9), draw from cylinder body on another road, is used for cooling off EGR gas.
3, engine-cooling system as claimed in claim 2 is characterized in that: when motor was just started working, the temperature of cooling liquid was lower than the unlatching temperature of thermoregulator (7), and at this moment, major cycle is closed, and motor only carries out short circle.
4, engine-cooling system as claimed in claim 3 is characterized in that: described major cycle is meant that cooling liquid comes out from the air inlet side water outlet of cylinder cap, behind radiator (5), flows to this circulation branch road in the thermoregulator (7); Described short circle is meant that cooling liquid flows to through the drainage hole of cylinder pad the integrated stand (10) on the cylinder body from cylinder cap air inlet side, flows to this circulation branch road in the thermoregulator (7) then.
5, as each described engine-cooling system of claim 1-4, it is characterized in that: the water inlet of water pump is got back to then at pump outlet in the intake position of machine oil cooler (10) branch road.
6, as each described engine-cooling system of claim 1-5, it is characterized in that: thermoregulator (7) adopts highly purified wax formula thermoregulator.
7, as each described engine-cooling system of claim 3-6, it is characterized in that: the switch of the auxiliary-valve control short circle branch road on the thermoregulator (7).
8, as each described engine-cooling system of claim 3-7, it is characterized in that: the intake of cooler for recycled exhaust gas (4) is got back to the water outlet position of cylinder cap major cycle then on the cylinder body of the exhaust side of engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101866190A CN101463752B (en) | 2008-12-11 | 2008-12-11 | Cooling system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101866190A CN101463752B (en) | 2008-12-11 | 2008-12-11 | Cooling system of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101463752A true CN101463752A (en) | 2009-06-24 |
| CN101463752B CN101463752B (en) | 2010-06-02 |
Family
ID=40804510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101866190A Active CN101463752B (en) | 2008-12-11 | 2008-12-11 | Cooling system of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101463752B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011638A (en) * | 2010-12-27 | 2011-04-13 | 东风汽车公司 | Water cooling structure for multi-cylinder engine |
| CN102086803A (en) * | 2011-02-17 | 2011-06-08 | 潍柴动力股份有限公司 | Engine and engine oil cooling circulation system thereof |
| CN102345501A (en) * | 2010-07-30 | 2012-02-08 | 上汽通用五菱汽车股份有限公司 | Engine-cooling system |
| CN102345500A (en) * | 2010-07-30 | 2012-02-08 | 上汽通用五菱汽车股份有限公司 | Circulation loop for engine cooling system |
| CN102705055A (en) * | 2012-06-18 | 2012-10-03 | 安徽江淮汽车股份有限公司 | Gasoline engine cooling system |
| CN103195734A (en) * | 2013-04-08 | 2013-07-10 | 安徽江淮汽车股份有限公司 | Water pump support where water pump volute is integrated |
| CN103352767A (en) * | 2013-07-23 | 2013-10-16 | 安徽江淮汽车股份有限公司 | Cooling system of diesel engine |
| CN104832311A (en) * | 2015-03-17 | 2015-08-12 | 重庆长安汽车股份有限公司 | Engine cooling water jacket |
| CN105201617A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Cooling system improved structure including auxiliary water pumps |
| CN105201618A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Dual cycle cooling system including auxiliary water pumps |
| CN105201619A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Dual cycle cooling system improved structure including double expansion tanks |
| CN108757139A (en) * | 2018-06-21 | 2018-11-06 | 浙江吉利控股集团有限公司 | A kind of engine cooling method and engine, vehicle |
| CN110836138A (en) * | 2018-08-17 | 2020-02-25 | 北汽福田汽车股份有限公司 | Engine cooling system, engine and vehicle |
| CN111878211A (en) * | 2020-07-23 | 2020-11-03 | 广西玉柴机器股份有限公司 | High-efficient thoughtlessly moves engine cooling system |
| CN112098104A (en) * | 2020-07-30 | 2020-12-18 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN114991929A (en) * | 2021-03-01 | 2022-09-02 | 比亚迪股份有限公司 | Vehicle and engine thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6316121A (en) * | 1986-07-07 | 1988-01-23 | Aisin Seiki Co Ltd | Cooling device for internal combustion engine |
| JPH07139350A (en) * | 1993-11-12 | 1995-05-30 | Giichi Kuze | Cooling system for internal combustion engine |
| CN2568820Y (en) * | 2002-09-11 | 2003-08-27 | 郭进华 | Improved engine cooling system |
| JP4278131B2 (en) * | 2003-04-04 | 2009-06-10 | 本田技研工業株式会社 | Cooling structure for water-cooled internal combustion engine |
| CN2844455Y (en) * | 2005-11-14 | 2006-12-06 | 昆明云内动力股份有限公司 | A kind of engine water pump |
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2008
- 2008-12-11 CN CN2008101866190A patent/CN101463752B/en active Active
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345501B (en) * | 2010-07-30 | 2013-05-08 | 上汽通用五菱汽车股份有限公司 | Engine-cooling system |
| CN102345501A (en) * | 2010-07-30 | 2012-02-08 | 上汽通用五菱汽车股份有限公司 | Engine-cooling system |
| CN102345500A (en) * | 2010-07-30 | 2012-02-08 | 上汽通用五菱汽车股份有限公司 | Circulation loop for engine cooling system |
| CN102011638B (en) * | 2010-12-27 | 2012-05-30 | 东风汽车公司 | Water cooling structure for multi-cylinder engine |
| CN102011638A (en) * | 2010-12-27 | 2011-04-13 | 东风汽车公司 | Water cooling structure for multi-cylinder engine |
| CN102086803A (en) * | 2011-02-17 | 2011-06-08 | 潍柴动力股份有限公司 | Engine and engine oil cooling circulation system thereof |
| CN102705055A (en) * | 2012-06-18 | 2012-10-03 | 安徽江淮汽车股份有限公司 | Gasoline engine cooling system |
| CN102705055B (en) * | 2012-06-18 | 2014-06-25 | 安徽江淮汽车股份有限公司 | Gasoline engine cooling system |
| CN103195734B (en) * | 2013-04-08 | 2015-12-02 | 安徽江淮汽车股份有限公司 | A kind of water pump bearing being integrated with water pump spiral casing |
| CN103195734A (en) * | 2013-04-08 | 2013-07-10 | 安徽江淮汽车股份有限公司 | Water pump support where water pump volute is integrated |
| CN103352767B (en) * | 2013-07-23 | 2016-05-11 | 安徽江淮汽车股份有限公司 | A kind of diesel engine cooling system |
| CN103352767A (en) * | 2013-07-23 | 2013-10-16 | 安徽江淮汽车股份有限公司 | Cooling system of diesel engine |
| CN104832311A (en) * | 2015-03-17 | 2015-08-12 | 重庆长安汽车股份有限公司 | Engine cooling water jacket |
| CN104832311B (en) * | 2015-03-17 | 2018-09-11 | 重庆长安汽车股份有限公司 | engine cooling water jacket |
| CN105201617A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Cooling system improved structure including auxiliary water pumps |
| CN105201619A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Dual cycle cooling system improved structure including double expansion tanks |
| CN105201618A (en) * | 2015-10-16 | 2015-12-30 | 安徽江淮汽车股份有限公司 | Dual cycle cooling system including auxiliary water pumps |
| CN108757139A (en) * | 2018-06-21 | 2018-11-06 | 浙江吉利控股集团有限公司 | A kind of engine cooling method and engine, vehicle |
| CN108757139B (en) * | 2018-06-21 | 2019-12-20 | 浙江吉利控股集团有限公司 | Engine cooling method, engine and vehicle |
| CN110836138A (en) * | 2018-08-17 | 2020-02-25 | 北汽福田汽车股份有限公司 | Engine cooling system, engine and vehicle |
| CN111878211A (en) * | 2020-07-23 | 2020-11-03 | 广西玉柴机器股份有限公司 | High-efficient thoughtlessly moves engine cooling system |
| CN111878211B (en) * | 2020-07-23 | 2024-05-10 | 广西玉柴机器股份有限公司 | Efficient hybrid engine cooling system |
| CN112098104A (en) * | 2020-07-30 | 2020-12-18 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN112098104B (en) * | 2020-07-30 | 2022-03-29 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN114991929A (en) * | 2021-03-01 | 2022-09-02 | 比亚迪股份有限公司 | Vehicle and engine thereof |
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| CN101463752B (en) | 2010-06-02 |
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