CN109057937A - A kind of coolant circulation system - Google Patents
A kind of coolant circulation system Download PDFInfo
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- CN109057937A CN109057937A CN201811172907.0A CN201811172907A CN109057937A CN 109057937 A CN109057937 A CN 109057937A CN 201811172907 A CN201811172907 A CN 201811172907A CN 109057937 A CN109057937 A CN 109057937A
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- mentioned
- thermostat
- coolant
- circulation system
- coolant liquid
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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
- F01P3/02—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
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/028—Deaeration devices
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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
-
- 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
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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
- 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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- 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)
- Temperature-Responsive Valves (AREA)
Abstract
The present invention provides a kind of coolant circulation systems, for recycling the coolant liquid in automobile.Coolant circulation system includes engine water jacket and high temperature heat sink, water jacket shunts coolant liquid to form several circulation loops, one in several circulation loops flows through high temperature heat sink, the heat-radiation loop for wherein flowing through high temperature heat sink further includes thermostat and expansion kettle, the water-supplying chamber of high temperature heat sink is connected with the water supplement port of the main valve of thermostat and expansion kettle respectively, the aperture of the main valve of thermostat is related to the temperature for the coolant liquid for flowing through thermostat, to adjust the coolant rate of the water outlet branch of high temperature heat sink and the moisturizing branch of expansion kettle.Provided coolant circulation system according to the present invention can control the coolant rate for participating in circulation according to temperature by thermostat, and reliable operation degree is high, and has good cooling and thermo-mechanical property.
Description
Technical field
The present invention relates to Automobile Design more particularly to the designs of vehicle-mounted coolant liquid circulation loop.
Background technique
For the vehicle energized with fuel oil, engine is exactly the heart of vehicle.Automobile engine for temperature very
Sensitivity needs to guarantee that automobile engine works in suitable operating temperature range, vapour to preferably safeguard automobile engine
If the operating temperature of car engine differs 10 degree or more, the properties such as dynamic property, oil consumption, discharge of engine, which all exist, to be compared
Apparent difference, so, the engine of each model has its optimum working temperature range, this is just to the cooling system of engine
There is high requirement.
The design of cooling system will guarantee that the temperature of engine coolant maintains in optimal operating temperature range, make to send out
Motivation is in reliable and effective Warm status.It can guarantee that vehicle at various varying environment temperature and Operation Conditions, starts in this way
Machine neither overheats, only cold, existing good dynamic property and economy, and has good functional reliability.At present with fuel oil
Its cooling system of the automobile of energy supply is divided into closed structure and half-closed structure substantially from structure, and traditional closed structure
It is had the disadvantage in that with half-closed structure
1) traditional closed structure: all in totally enclosed type state, pressure-control valve lid is set entire cooling system circulation
Meter is on expansion kettle, and the water supplement port of expansion kettle is directly connected to water pump water inlet front position, and coolant liquid and atmosphere are complete in expansion kettle
Full isolation.(relief valve does not open it when system pressure at pressure-control valve is less than relief valve unlatching value in vehicle operation
Before), since expansion kettle design has enough expansion spaces, system has enough deaeration capabilities.This closed structure it is cold
But system circulation reliable operation degree is high, and good exhaust effect, anti-cavitation ability is strong, and relief valve opens that design value is higher and system pressure
Higher, cooling performance is preferable.But under dead season environment, vehicle cold starts in warm, contains in expansion kettle and entirely follows
20%~30% coolant liquid of ring coolant liquid total amount can participate in power cycle, thus considerably increase participation during heat engine
The coolant liquid capacity of circulation, increases the warm-up period of automobile, and during engine warm-up, enriching and combustion are wanted in fuel oil injection
Burning is not exclusively abundant, to increase the oil consumption of automobile and discharge pollutants.
2) traditional half-closed structure: entire cooling system circulation is not completely enclosed state, pressure-control valve design
On a heat sink in the pipeline of water chamber or radiator inlet branch, the coolant liquid in water storage bottle is communicated with atmosphere.This semi-closure
Formula structure is in engine operation process, since pressure is consistently greater than atmospheric pressure at system water supplement, the coolant liquid in water storage bottle
System can not be compensated and add water, after only equal engines are shut down, as coolant temperature declines, system pressure drops to low
After atmospheric pressure, the coolant liquid in water storage bottle is just compensated to system plus water.And engine runtime system is closed follows
There is no expansion space in ring, pressure of the system at pressure-control valve lid is opened greater than relief valve when only liquid temperature to be cooled rises
When opening design value (relief valve opening), the gas in system could be discharged to system gas greatly by the pipeline connecting with water storage bottle
In gas.So the cooling system exhaust effect of this half-closed structure is poor, relief valve unlatching design value is relatively low, and reliable operation degree is inclined
Low, cooling performance is weaker, adds water that cannot compensate plus vehicle runtime system, especially in torridity summer, system easily occurs
Cavitation results even in components and damages because of overheat when serious, vehicle is unable to operate normally.
Therefore, a kind of coolant circulation system is needed, defect existing for existing cooling system can be overcome, work is provided
Reliability height, the cooling satisfactory coolant circulation system of warming-up performance, to enable the engine to work in optimal work
Make in temperature range.
Summary of the invention
A brief summary of one or more aspects is given below to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and be both not intended to identify critical or decisive element in all aspects also non-
Attempt to define the range in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts are with the sequence for more detailed description given later.
As described above, a kind of reliable operation degree height is provided in order to solve the problems, such as to exist in existing automobile cooling system, it is cold
But, thermo-mechanical property is more excellent, and engine is worked in the cooling system of optimal operating temperature range, the present invention provides
A kind of coolant circulation system, for recycling the coolant liquid in automobile, above-mentioned coolant circulation system include engine water jacket and
High temperature heat sink, above-mentioned water jacket shunt above-mentioned coolant liquid to form several circulation loops, one in above-mentioned several circulation loops
Item flows through above-mentioned high temperature heat sink, wherein and the heat-radiation loop for flowing through above-mentioned high temperature heat sink further includes thermostat and expansion kettle, on
The water-supplying chamber for stating high temperature heat sink is connected with the water supplement port of the main valve of above-mentioned thermostat and above-mentioned expansion kettle respectively, above-mentioned section temperature
The aperture of the main valve of device is related to the temperature for the coolant liquid for flowing through above-mentioned thermostat, to adjust the water outlet of above-mentioned high temperature heat sink
The coolant rate of the moisturizing branch of branch and above-mentioned expansion kettle.
Such as above-mentioned coolant circulation system, optionally, the auxiliary-valve of above-mentioned thermostat is connected with above-mentioned engine water jacket
With the self circular loop formed in above-mentioned several circulation loops, the auxiliary-valve aperture of above-mentioned thermostat and above-mentioned thermostat is flowed through
The temperature of coolant liquid is related, to adjust the coolant rate of above-mentioned self circular loop.
Such as above-mentioned coolant circulation system, optionally, the wax packet of above-mentioned thermostat is according to flowing through the cold of above-mentioned thermostat
But the push rod that the temperatures drive of liquid connects the major and minor valve of above-mentioned thermostat is moved in the cavity of above-mentioned thermostat on to adjust
The aperture of the major and minor valve of thermostat is stated, wherein above-mentioned auxiliary-valve closes entirely when above-mentioned main valve standard-sized sheet；When above-mentioned auxiliary-valve
When standard-sized sheet, above-mentioned main valve closes entirely.
Such as above-mentioned coolant circulation system, optionally, above-mentioned thermostat is electronic thermostat, is provided in above-mentioned wax packet
Electric heating core, above-mentioned electric heating core heat in above-mentioned wax packet according to the temperature for the coolant liquid for flowing through above-mentioned thermostat.
Such as above-mentioned coolant circulation system, optionally, above-mentioned expansion kettle have it is several remove port, it is above-mentioned several to remove port
In one be connected to above-mentioned engine water jacket and form the first degasification branch, it is above-mentioned several except another in port are connected to
The intake chamber for stating high temperature heat sink forms the second degasification branch, wherein above-mentioned first degasification branch and above-mentioned second degasification branch
It is provided with flow-limiting valve.
Such as above-mentioned coolant circulation system, optionally, above-mentioned coolant circulation system further includes heat exchanger, above-mentioned several
A heat-exchanging loop for flowing through above-mentioned heat exchanger, and flowing through above-mentioned heat exchanger in circulation loop flows through the normally opened of above-mentioned thermostat
Channel.
Such as above-mentioned coolant circulation system, optionally, above-mentioned coolant circulation system further includes oil cooler, above-mentioned
A cooling circuit for flowing through said engine oil cooler, and flowing through said engine oil cooler in several circulation loops flows through above-mentioned
The normally opened channel of thermostat.
Such as above-mentioned coolant circulation system, optionally, above-mentioned coolant circulation system further includes booster, above-mentioned several
A boost-up circuit for flowing through above-mentioned booster, and flowing through above-mentioned booster in circulation loop flows through the normally opened of above-mentioned thermostat
Channel.
Such as above-mentioned coolant circulation system, optionally, above-mentioned coolant circulation system include further include be connected on it is above-mentioned
Sub- water pump in boost-up circuit, above-mentioned sub- water pump drive above-mentioned coolant liquid so that above-mentioned coolant liquid is followed in above-mentioned boost-up circuit
Ring.
Such as above-mentioned coolant circulation system, optionally, above-mentioned coolant circulation system further includes being series at above-mentioned start
Feed pump between machine water jacket and above-mentioned thermostat, above-mentioned feed pump drive above-mentioned coolant liquid so that above-mentioned coolant liquid flow through it is above-mentioned
Engine water jacket and shunt form above-mentioned several circulation loops.
Provided coolant circulation system according to the present invention can be controlled by thermostat according to temperature and participate in circulation
Coolant rate further improves the reliable operation degree of system on the basis of existing cooling system, and has good
Cooling and thermo-mechanical property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the coolant circulation system of one embodiment of the invention.
Fig. 2 is the schematic diagram of the electronic thermostat full-gear of one embodiment of the invention.
Fig. 3 is work of the coolant circulation system of one embodiment of the invention under the warming-up mode of thermostat closed state
Make schematic diagram.
Fig. 4 is the coolant circulation system of one embodiment of the invention under the normal operation mode of thermostat half-open position
Operation schematic diagram.
Fig. 5 is the heavy-duty service mode of the coolant circulation system in thermostat full-gear of one embodiment of the invention
Under operation schematic diagram.
Fig. 6 is the structural schematic diagram of the coolant circulation system of one embodiment of the invention.
Fig. 7 is work of the coolant circulation system of one embodiment of the invention under the warming-up mode of thermostat closed state
Make schematic diagram.
Fig. 8 is the coolant circulation system of one embodiment of the invention under the normal operation mode of thermostat half-open position
Operation schematic diagram.
Fig. 9 is the heavy-duty service mode of the coolant circulation system in thermostat full-gear of one embodiment of the invention
Under operation schematic diagram.
Figure 10 is the coolant circulation system of one embodiment of the invention after engine stop under booster refrigerating mode
Operation schematic diagram.
Appended drawing reference
1 expansion kettle
2 feed pumps
3 engine water jackets
4 flow-limiting valves
5 warm-air exchangers
6 oil cooler
7 sub- water pumps
8 boosters
9 high temperature heat sinks
10 thermostats
11 moisturizing branches
12 first degasification branches
13 second degasification branches
14 water inlet branches
15 water outlet branches
16 partial circulating branches
17 pressurization branches
18 heat exchange branches；
101 main valves
102 auxiliary-valves
103 wax packets
104 push rods
105 thermostats install cavity
106 support frames
107 first limiting units
108 second limiting units
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this specification
Revealed content is understood other advantages and efficacy of the present invention easily.Although description of the invention will combine preferred embodiment
It introduces together, but this feature for not representing the invention is only limitted to the embodiment.On the contrary, being invented in conjunction with embodiment
The purpose of introduction is to be possible to the other selections extended or transformation to cover based on claim of the invention.In order to mention
For that will include many concrete details in depth understanding of the invention, being described below.The present invention can also be thin without using these
Section is implemented.In addition, in order to avoid confusion or obscuring emphasis of the invention, some details will be omitted in the de-scription.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In addition, "upper", "lower", "left", "right", "top", "bottom" used in the following description, should not be construed as pair
Limitation of the invention.
In order to overcome defect existing for existing cooling system, to enable the engine to the work within the scope of optimal temperature
Make, present embodiments provides a kind of reliable operation degree height, cooling, the satisfactory coolant circulation system of warming-up performance.
The structure of above-mentioned coolant circulation system is as shown in Figure 1, the system includes:
Expansion kettle 1, be equipped with water supplement port and it is several remove port, and contain total amount 20% in entire coolant circulation system~
30% coolant liquid, the compression shock come in reduction system for providing decompression measure；
Feed pump 2, for driving the coolant liquid by taking water as an example to flow in coolant circulation system；
Engine water jacket 3, including cylinder body water jacket and cylinder cover water jacket, for cooling down engine；
High temperature heat sink 9, including intake chamber and water-supplying chamber are used for heat derives coolant circulation system；And
Thermostat 10, structure is as shown in Fig. 2, include main valve 101, auxiliary-valve 102, wax packet 103, push rod 104, section temperature
Device installs cavity 105 and support frame 106, for controlling flow of the coolant liquid in each circulation loop of coolant circulation system.
In above-mentioned coolant circulation system, above-mentioned expansion kettle 1, feed pump 2, engine water jacket 3,9 and of high temperature heat sink
Thermostat 10 is connected with each other by coolant duct.One normally opened water outlet of above-mentioned thermostat 10 connects by above-mentioned feed pump 2
Connect above-mentioned engine water jacket 3.One water outlet of above-mentioned engine water jacket 3 connects the auxiliary-valve 102 of above-mentioned thermostat 10 with structure
At partial circulating branch 16；Another water outlet of above-mentioned engine water jacket 3 connects the intake chamber of above-mentioned high temperature heat sink 9 to constitute
Water inlet branch 14；Another water outlet of above-mentioned engine water jacket 3 connects one of above-mentioned expansion kettle 1 except port is to constitute first
Degasification branch 12.The water-supplying chamber of above-mentioned high temperature heat sink 9 connects the main valve 101 of above-mentioned thermostat 10 to constitute water outlet branch
15；The water-supplying chamber of above-mentioned high temperature heat sink 9 is also connected with above-mentioned 1 water supplement port of expansion kettle to constitute moisturizing branch 11, due to expansion kettle 1
Water supplement port and high temperature heat sink water-supplying chamber's vector, the main valve 101 of thermostat 10 can control the moisturizing of engine simultaneously
Branch 11.The intake chamber of above-mentioned high temperature heat sink 9 connect above-mentioned expansion kettle 1 another except port to constitute the second degasification branch
13。
In the present embodiment, when coolant temperature is higher, above-mentioned thermostat 10, which can increase, flows through above-mentioned main valve 101
Coolant rate, to promote cooling capacity.When coolant temperature is lower, above-mentioned thermostat 10 can reduce coolant liquid and follow
The amount of the coolant liquid of cycle operation in loop system, to save the energy；And the ratio by improving coolant liquid in partial circulating branch 16,
To promote the effect of warming-up.
Due to the presence of partial circulating branch 16, carried out so that coolant liquid can return to water pump 2 after coming out from engine in time
Compensation, so, the pressure spot in the case where needing warming-up, even if engine carries out anxious Accelerating running operating condition, before water pump 2
It is not less than the cavitation pressure spot of coolant liquid at a temperature of this, so as to avoid system that cavitation occurs, is reduced since system occurs
Cavitation and caused by damage of components the case where, effectively improve the reliability of system.
In order to realize that above-mentioned thermostat 10 controls flow of the coolant liquid in each circulation loop of coolant circulation system
Effect, the thermostat of above-mentioned thermostat 10 install the cavity that an above-mentioned wax packet 103 of accommodating can be equipped with inside cavity 105.On
The inner wall for stating cavity is equipped with support frame 106, is used to support above-mentioned wax packet 103.The size of above-mentioned support frame 106, shape with it is above-mentioned
Size, the shape of wax packet 103 are corresponding, to limit radial shifting of the above-mentioned wax packet 103 in above-mentioned thermostat installation cavity 105
It is dynamic.
Above-mentioned 103 both ends of wax packet pass through above-mentioned push rod 104 respectively and connect above-mentioned main valve 101 and auxiliary-valve 102.Above-mentioned wax
Packet 103 is according to the temperature for the coolant liquid for flowing through above-mentioned thermostat, and the main valve 101 and auxiliary-valve 102 for pushing linkage are in thermostat
The synchronous one-dimensional axial movement of progress in cavity 105 is installed.
It is understood that above-mentioned axial direction is referred to from above-mentioned main valve 101 to above-mentioned auxiliary-valve 102, or from above-mentioned pair
Valve 102 arrives the direction of above-mentioned main valve 101, that is, above-mentioned main valve 101 and auxiliary-valve 102 are required for realizing its function
Carry out mobile direction.Correspondingly, it is above-mentioned it is radial signified can be it is any vertically with above-mentioned axially direction.
The both ends of above-mentioned thermostat installation cavity 105 can also be respectively equipped with the first limiting unit corresponding to main valve 101
107, and corresponding to the second limiting unit 108 of auxiliary-valve 102.Above-mentioned first limiting unit 107 can be structure that can be through-flow,
And above-mentioned main valve 101 and the first limiting unit 107, when contacting, main valve 101 should can be bonded to each other with the first limiting unit 107,
To close above-mentioned water outlet branch 15.Correspondingly, above-mentioned second limiting unit 108 or structure that can be through-flow, and it is above-mentioned
When auxiliary-valve 102 and the second limiting unit 108 contact, it should can be bonded to each other with the second limiting unit 108, to close above-mentioned independence
Partial circulating branch 16.
Above-mentioned first limiting unit 107 and the second limiting unit 108 are respectively used to limitation main valve 101 and are saving with auxiliary-valve 102
The moving range at warm device installation 105 both ends of cavity, and determine the aperture of main valve 101 Yu auxiliary-valve 102.Above-mentioned main valve 101
Aperture refer to the through-flow bore between main valve 101 and the first limiting unit 107, the aperture of above-mentioned auxiliary-valve 102 refers to
Through-flow bore between auxiliary-valve 102 and the second limiting unit 108.
When above-mentioned main valve 101 is moved to the leftmost side of the installation cavity 105 of thermostat in Fig. 2, contacts and be bonded the first limit
Portion 107 processed is discharged branch 15 to close, and main valve 101 closes (aperture is minimum) entirely；Correspondingly, auxiliary-valve 102 and the second limiting unit
108 distance is farthest, and the through-flow bore of independent partial circulating branch 16 is maximum, 102 standard-sized sheet of auxiliary-valve (aperture is maximum).
When above-mentioned auxiliary-valve 102 is moved to the rightmost side of the installation cavity 105 of thermostat in Fig. 2, contacts and be bonded the second limit
To close independent partial circulating branch 16, auxiliary-valve 102 closes (aperture is minimum) entirely in portion 108 processed；Correspondingly, main valve 101 and first
The distance of limiting unit 107 is farthest, and the through-flow bore for being discharged branch 15 is maximum, 101 standard-sized sheet of main valve (aperture is maximum).
In the course of work of coolant circulation system, according to the principle that above-mentioned wax packet 103 expands with heat and contract with cold, above-mentioned main valve
101 aperture is related to the temperature of coolant liquid for flowing through above-mentioned thermostat 10, has the water outlet branch for adjusting above-mentioned high temperature heat sink 9
The effect of the coolant rate ratio of the moisturizing branch 11 of road 15 and above-mentioned expansion kettle 1.
When coolant temperature is higher, above-mentioned main valve 101 moves right so that far from the first limiting unit 107, aperture is with out
The increase of the through-flow bore of water branch 15 and increase, more from above-mentioned high temperature heat sink 9 flow out coolant liquid flow into water outlet branch 15,
To enhance the cooling capacity of coolant circulation system.
When coolant temperature is lower, above-mentioned main valve 101 is moved to the left so that close to the first limiting unit 107, aperture is with out
The reduction of the through-flow bore of water branch 15 and reduce, more from above-mentioned high temperature heat sink 9 flow out coolant liquid pass through moisturizing branch 15
The workload of feed pump 2 is reduced, to save the energy into expansion kettle 1 to reduce the amount of coolant liquid in circulation loop.
Due to the presence of partial circulating branch 16, carried out so that coolant liquid can return to water pump 2 after coming out from engine in time
Compensation, so, the pressure spot in the case where needing warming-up, even if engine carries out anxious Accelerating running operating condition, before water pump 2
It is not less than the cavitation pressure spot of coolant liquid at a temperature of this, so as to avoid system that cavitation occurs, is reduced since system occurs
Cavitation and caused by damage of components the case where, effectively improve the reliability of system.
At the same time, the aperture of above-mentioned auxiliary-valve 102 increases with the reduction of temperature, flows through above-mentioned independent partial circulating branch
16 cooling liquid proportional rises.Part coolant liquid in coolant circulation system circulates in above-mentioned self circular loop, no
It stops through engine to promote coolant temperature, to play the effect of warming-up.
It will be understood to those skilled in the art that the thermostat 10 of above-mentioned integral type is a kind of preferred side of the present embodiment
Case；In other embodiments, those skilled in the art can also be by being arranged multiple its valve opening cutting in response to temperature
Changing device controls the effect of flow of the coolant liquid in each circulation loop of coolant circulation system to realize.
Above-mentioned main valve 101 and auxiliary-valve 102 carry out one-dimensional axial direction in above-mentioned thermostat installation cavity 105 for convenience
Mobile, above-mentioned thermostat installation cavity 105 can further be tubular structure, wherein tubular is not limited in cylindrical shape, can also
To be shaft section as the open column shape structure of the both ends open of other arbitrary shapes.
It is tubular structure corresponding to above-mentioned thermostat installation cavity 105, above-mentioned support frame 106 can also be further arranged to
Annular or other can stablize support and limit other separate structures that wax packet moves radially, to play the above-mentioned wax of support
Packet 103, and limit its effect moved radially in above-mentioned thermostat installation cavity 105.
It is tubular structure, above-mentioned first limiting unit 107 and above-mentioned second limitation corresponding to above-mentioned thermostat installation cavity 105
Portion 108 can also be further arranged to annular, wherein annular is not limited in circular ring shape, is also possible to that above-mentioned master can be limited
Valve 11 and auxiliary-valve 12 are mobile, and any other ring structure with through-current capability.
Above-mentioned main valve 101 should can be bonded to each other with the first limiting unit 107, refer to the left side of main valve 101 in Fig. 2
Surface can be bonded to each other with the right lateral surface of the first limiting unit 107.In the present embodiment, it can be set on above-mentioned main valve 101
There is seal rubber, so that the first limiting unit 107 with above-mentioned thermostat 10 fits closely the sealing of carry out face.In other embodiments
In, above-mentioned seal rubber also can be set in the first limiting unit 107, fit closely the sealing of carry out face with above-mentioned main valve 101；
Sealing means are not limited in using seal rubber, can also be sealed using other sealing materials；It is bonded to each other also not
It is only limitted to plane fitting, or the fitting of other complex surface shapes (such as: step-like, hackly surface).
Correspondingly, above-mentioned auxiliary-valve 102 should can be bonded to each other with the second limiting unit 108, auxiliary-valve in Fig. 2 is referred to
102 right lateral surface can be bonded to each other with the left-hand face of the second limiting unit 108, to be sealed.Sealing means and not only
It is limited to using seal rubber, can also be sealed using other sealing materials；It is bonded to each other and is not limited in plane fitting,
It can be with the fitting of other complex surface shapes.
It will also be understood by those skilled in the art that and not having to above with respect to left and right description only to facilitate understand
It is of the invention in limiting.In other embodiments, it is above-mentioned it is left and right can also replace mutually, or describe to replace with other directions.
In the present embodiment, the cylinder body water jacket of above-mentioned engine water jacket 3 is used to cool down cylinder holes, the cylinder sleeve of engine cylinder body,
And the piston crown of operation.The cylinder cover water jacket of above-mentioned engine water jacket 3 is used to cool down the combustion chamber that engine cylinder covers, into row
The components such as valve, valve retainer and exhaust manifold.Coolant liquid between above-mentioned cylinder body water jacket and cylinder cover water jacket not in advance into
Row shunts, but the first mixed flow in above-mentioned engine water jacket 3, then shunts and to form several coolant liquid circulation loops.
One in above-mentioned several circulation loops can be by above-mentioned high temperature heat sink 9, thermostat 10, feed pump 2 and hair
The heat-radiation loop that motivation water jacket 3 is constituted.Above-mentioned heat-radiation loop includes above-mentioned water inlet branch 14 and above-mentioned water outlet branch 15.
Another can be and be made of above-mentioned thermostat 10, feed pump 2 and engine water jacket 3 in above-mentioned several circulation loops
Self circular loop.Above-mentioned self circular loop includes above-mentioned partial circulating branch 16.
It will be understood to those skilled in the art that above-mentioned cylinder body water jacket is integrally integrated into above-mentioned start with cylinder cover water jacket
Machine water jacket 3 is a kind of specific embodiment of the invention, its object is to simplify the structure of coolant circulation system, to save
System bulk, and further highlight the function of 10 coordinated control of thermostat.It in other embodiments, can also be using equivalent point
Accessory is shunted with cylinder cover water jacket, two thermostats and corresponding other from formula cylinder body water jacket, by carrying out letter to the present embodiment
Single deformation realizes the effect of the present embodiment to complete the scheme of the present embodiment.
It will also be understood by those skilled in the art that in the present embodiment, since fuel engines is in work water temperature difference
At 10 DEG C or more, all there is obvious difference in the performances such as dynamic property, oil consumption, discharge of engine, therefore, each model
Engine has the requirement of an optimum working temperature range.Above-mentioned high temperature heat sink 9, which can be one kind and be exclusively used in fuel oil, starts
The efficient radiating apparatus of machine can be equipped with the radiator structures such as radiator fan and heat sink.It is low compared to what electric energy engine used
Temperature radiator, the above-mentioned high temperature heat sink 9 for being exclusively used in fuel engines have very strong heat-sinking capability, can be by fuel engines
The heat generated when capacity operation exports coolant circulation system in time.
Correspondingly, coolant circulation system provided in this embodiment can be specifically adapted to the vehicle with fuel engines
, such as: pure fuel vehicle, the mixed dynamic PHEV of plug-in, mixed dynamic HEV, and the vehicle using high load capacity formula engine.
In the present embodiment, above-mentioned expansion kettle 1 can be by above-mentioned moisturizing branch 11, and the coolant liquid to compensate in sealing is followed
The problem of coolant liquid thermal expansion generated in loop system by temperature rise.
Above-mentioned expansion kettle 1 can also be by above-mentioned first degasification branch 12 and above-mentioned second degasification branch 13 come cleared cooling
Air in liquid.
It will be understood to those skilled in the art that containing total amount in entire coolant circulation system in above-mentioned expansion kettle 1
20%~30% coolant liquid is the specific embodiment of the present invention.It in other embodiments, can also be in expansion kettle
Contain more or fewer coolant liquids.
It is set on above-mentioned expansion kettle 1 there are two except port is also the specific embodiment of the present invention, it is right respectively to be used for
Above-mentioned engine water jacket 3 and above-mentioned high temperature heat sink 9 carry out degasification, to obtain better degassing effect.In other embodiments,
It can also be provided only with one on expansion kettle except port, be separately connected engine water jacket and high temperature heat sink carries out degasification；Or it is equipped with
Port is more removed, other devices being separately connected in coolant circulation system carry out degasification；Or by needing to carry out degasification
The mode that degasification structure is separately provided on device (such as: engine water jacket and high temperature heat sink) carries out degasification, and it is nonessential
Setting removes port on expansion kettle.
It will also be understood by those skilled in the art that in the present embodiment, above-mentioned feed pump 2 can be by taking mechanical pump as an example
Any form of pump, be set between above-mentioned thermostat 10 and above-mentioned engine water jacket 3, be separately connected above-mentioned thermostat 10 go out
The water inlet at the mouth of a river and above-mentioned engine water jacket 3.And in other embodiments, the master in cooling system also can be set in feed pump
The other positions in circuit, to realize the effect that driving coolant liquid flows in each circuit of cooling system.
In the present embodiment, when engine cold starts, above-mentioned coolant circulation system works under warming-up mode, on
It states thermostat 10 and closes (main valve 101 closes entirely, 102 standard-sized sheet of auxiliary-valve).
As shown in figure 3, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, then from above-mentioned independence
Partial circulating branch 16 flows out, and feed pump 2 is returned directly to by the auxiliary-valve 102 of above-mentioned thermostat 10, thus in above-mentioned self-loopa
It is circulated in circuit.
In above-mentioned self circular loop, by the way that the coolant liquid flowed out from above-mentioned engine water jacket 3 is compensated back in time
State feed pump 2, it can be ensured that when engine carries out anxious Accelerating running, the coolant pressure before feed pump 2 is not less than this temperature
The cavitation pressure of lower coolant liquid further prevents coolant circulation system that cavitation phenomenons occur, and damage components is avoided, to mention
The reliability of high coolant circulation system.
Further, since in the entire coolant circulation system stored in above-mentioned expansion kettle 1 total amount 20%~30% cooling
Liquid is not involved in above-mentioned self-loopa, greatly reduces the amount that the coolant liquid of self-loopa is participated in warming-up process, to engine warm-up speed
Degree improves a lot.
In the present embodiment, when engine small-power is run, above-mentioned coolant circulation system work is operating normally mould
Under formula, above-mentioned thermostat 10 is half-open (main valve 101, auxiliary-valve 102 are switched on).
As shown in figure 4, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, a portion is cold
But liquid is flowed out from above-mentioned independent partial circulating branch 16, is returned directly to feed pump 2 by the auxiliary-valve 102 of above-mentioned thermostat 10, from
And it is circulated in above-mentioned self circular loop.By way of compensating above-mentioned feed pump 2 in time, coolant circulation system is prevented
Cavitation phenomenons occur, damage components are avoided, to improve the reliability of coolant circulation system.
And remainder coolant liquid is flowed out from above-mentioned water inlet branch 14, and enters the intake chamber of above-mentioned high temperature heat sink 9, warp
After crossing the heat dissipation of high temperature heat sink 9, feed pump 2 is returned to from the main valve of above-mentioned thermostat 10, thus in above-mentioned heat-radiation loop
It circulates.
In above-mentioned self circular loop and heat-radiation loop, the cooling liquid proportional and specific uninterrupted circulated, by upper
The opening size of the main valve 101 of thermostat 10 and auxiliary-valve 102 is stated to determine, so that engine is in optimal operating temperature model
Enclose interior work.
In the present embodiment, when the high-power operation of engine, above-mentioned coolant circulation system work is in heavy-duty service
Under mode, above-mentioned 10 standard-sized sheet of thermostat (101 standard-sized sheet of main valve, auxiliary-valve 102 close entirely).
As shown in figure 5, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, from above-mentioned water inlet branch
Road 14 is flowed out, and enters the intake chamber of above-mentioned high temperature heat sink 9, after the heat dissipation of high temperature heat sink 9, from above-mentioned thermostat 10
Main valve return to feed pump 2, to be circulated in above-mentioned heat-radiation loop.
While reaching full-gear due to the main valve 101 of above-mentioned thermostat 10, auxiliary-valve 102 also can become simultaneously complete
Off status, to close above-mentioned independent partial circulating branch 16.Under this state model, in independent partial circulating branch 16 almost without
Coolant rate, the coolant rate for flowing through above-mentioned heat-radiation loop high temperature radiator 9 increases, to improve coolant liquid cyclic system
Cooling capacity of the system under hot environment or the high-power operating status of engine, the operating temperature for controlling engine were unlikely to
It is high.
Based on above description, those skilled in the art be will be seen that, coolant circulation system provided by the present embodiment
By using above-mentioned thermostat 10, the coolant rate that heat dissipation circulation is participated under different coolant temperatures is controlled, and to above-mentioned master
Water pump 2 is compensated to prevent from cavitating, and the work of coolant circulation system is further improved on the basis of existing cooling system
Make reliability, and there is good cooling and thermo-mechanical property.
Preferably, in the coolant circulation system that a preferred embodiment of the present embodiment provides, above-mentioned thermostat 10 can
Further to select electronic thermostat.Correspondingly, electric heating core can be equipped in the wax packet 103 of above-mentioned electronic thermostat 10,
Electric heating core heats in above-mentioned wax packet 103 according to the temperature for the coolant liquid for flowing through above-mentioned thermostat 10, above-mentioned to control
The main valve 101 of electronic thermostat 10 and the aperture of auxiliary-valve 102.
It will be understood to those skilled in the art that traditional wax packet is only with the principle expanded with heat and contract with cold, according to the temperature of coolant liquid
The aperture of degree control thermostatic valve.However it is limited to the limitation of the coefficient of thermal expansion of thermostat volume and wax packaging material, it is traditional
Wax packet small volume, it is not high to the sensitivity of coolant temperature variation, cause its control precision lower, is unable to control engine and exists
Work, the reliable operation degree of engine are relatively low in optimal operating temperature range.
By way of electric heating core is arranged in the wax packet 103 in above-mentioned electronic thermostat 10, this preferred embodiment can
Active heating is carried out to above-mentioned wax packet 103 according to the variation of the coolant temperature got, to promote wax packet 103 to coolant liquid
The sensitivity and its control precision of temperature change, work in optimal operating temperature range, and promoted to control engine
Its reliable operation degree.
Optionally, as shown in fig. 6, in the coolant circulation system that above-mentioned preferred embodiment provides, above-mentioned first degasification branch
Flow-limiting valve 4 is also provided on road 12 and the second degasification branch 13.
It will be understood to those skilled in the art that needing to move it when containing gas in coolant circulation system
State degasification.Under normal conditions, above-mentioned gas can be removed in the form of gas-liquid mixture by above-mentioned first degasification branch 12 and second
Gas branch 13.If the flow of the gas-liquid mixture in above-mentioned degasification branch 12,13 is bigger than normal, gas is separated from gas-liquid mixture
Efficiency out is lower, to reduce the degassing effect of coolant circulation system.
By way of increasing flow-limiting valve in above-mentioned first degasification branch 12 and the second degasification branch 13, this preferred embodiment
The flow that the gas-liquid mixture in degasification branch 12,13 can be substantially reduced is separated from gas-liquid mixture to improve gas
Efficiency, to improve the degassing effect of coolant circulation system.
It optionally, can also include heat exchanger 5 in the coolant circulation system that above-mentioned preferred embodiment provides.If above-mentioned
The above-mentioned engine water jacket 3 of one in dry circulation loop connection constitutes the branch 18 that exchanges heat with heat exchanger 5, then by above-mentioned heat exchanger
5 are connected to the normally opened channel of above-mentioned electronic thermostat 10, thus by above-mentioned heat exchanger 5, electronic thermostat 10, feed pump 2 and hair
Motivation water jacket 3 constitutes heat-exchanging loop.
It will be understood to those skilled in the art that above-mentioned heat exchanger 5 can be warm-air exchanger common on passenger carrying vehicle,
For improving the comfort of passenger.Above-mentioned warm-air exchanger 5 is connected to above-mentioned electronics section temperature by the way that above-mentioned heat-exchanging loop is arranged
The normally opened channel of device 10, it is ensured that no matter above-mentioned electronic thermostat 10 works under any mode, can mention for passenger inside the vehicle
For comfortable heating.
It optionally, can also include oil cooler 6 in the coolant circulation system that above-mentioned preferred embodiment provides.On
The above-mentioned engine water jacket 3 of a connection and oil cooler 6 in several circulation loops are stated, then said engine oil cooler 6 is connected
It is connected to the normally opened channel of above-mentioned electronic thermostat 10, thus by said engine oil cooler 6, electronic thermostat 10, feed pump 2 and hair
Motivation water jacket 3 constitutes motor oil cooling circuit.
It will be understood to those skilled in the art that said engine oil cooler 6 is generally used for engine with supercharger, and on a small quantity certainly
Engine is inhaled, the machine oil of cooling engine is mainly used for.By the way that said engine oil cooling circuit is arranged, by said engine oil cooler 6
Be connected to the normally opened channel of above-mentioned electronic thermostat 10, it is ensured that no matter above-mentioned electronic thermostat 10 work under any mode
Make, can steadily cool down the machine oil of engine, to protect engine, and improve its reliable operation degree.
It optionally, can also include booster 8 in the coolant circulation system that above-mentioned preferred embodiment provides.If above-mentioned
The above-mentioned engine water jacket 3 of one in dry circulation loop connection is constituted with booster 8 is pressurized branch 17, then by above-mentioned booster
8 are connected to the normally opened channel of above-mentioned electronic thermostat 10, thus by above-mentioned booster 8, electronic thermostat 10, feed pump 2 and hair
Motivation water jacket 3 constitutes boost-up circuit.
It will be understood to those skilled in the art that above-mentioned booster 8 is generally used for the vehicle with engine with supercharger.Pass through
Above-mentioned boost-up circuit is set, above-mentioned booster 8 is connected to the normally opened channel of above-mentioned electronic thermostat 10, it is ensured that no matter on
It states electronic thermostat 10 to work under any mode, can steadily cool down above-mentioned booster 8, to protect booster 8, and mention
Its high reliable operation degree.
Optionally, in the coolant circulation system that above-mentioned preferred embodiment provides, can also include in above-mentioned boost-up circuit
It is series at the sub- water pump 7 of above-mentioned booster 8, for driving coolant liquid to circulate in above-mentioned boost-up circuit.
It will be understood to those skilled in the art that since above-mentioned sub- water pump 7 is set in above-mentioned pressurization branch 17, it is only necessary to drive
Dynamic coolant liquid circulates in above-mentioned boost-up circuit, and therefore, above-mentioned sub- water pump 7 can be lower-powered electronic water pump.On
State the smaller driving power for referring to power and being less than above-mentioned feed pump 2 of power.
Based on above description, it will be understood to those skilled in the art that above-mentioned heat-exchanging loop, motor oil cooling circuit and pressurization
Circuit can be three mutually independent circulation loops, and those skilled in the art can recycle only with any one therein
Circuit, to realize its corresponding effect；Several therein can also be used, simultaneously to realize the effect of its superposition；Or again
Other circulation loops are added, in parallel to realize its corresponding effect.
More preferably, in the embodiment illustrated in fig. 6, coolant circulation system provided by the invention also contains simultaneously
State heat-exchanging loop, motor oil cooling circuit and boost-up circuit.
In the embodiment illustrated in fig. 6, when engine cold starts, above-mentioned coolant circulation system work is in warming-up
Under mode, above-mentioned electronic thermostat 10 closes (main valve 101 closes entirely, 102 standard-sized sheet of auxiliary-valve).
Referring to FIG. 7, Fig. 7 shows the coolant liquid loop condition when coolant circulation system work under warming-up mode.
As shown in fig. 7, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, a portion coolant liquid is from upper
It states independent partial circulating branch 16 to flow out, feed pump 2 is returned directly to by the auxiliary-valve 102 of above-mentioned thermostat 10, thus above-mentioned
It is circulated in self circular loop.
It is timely by the coolant liquid for flowing out sub-fraction from above-mentioned engine water jacket 3 in above-mentioned self circular loop
Compensate back above-mentioned feed pump 2, it can be ensured that when engine carries out anxious Accelerating running, the coolant pressure before feed pump 2 will not be low
Cavitation pressure of coolant liquid at a temperature of this further prevents coolant circulation system that cavitation phenomenons occur, and avoids damage zero
Part, to improve the reliability of coolant circulation system.
And in addition most of coolant liquid is flowed out from above-mentioned engine water jacket 3, flows separately through above-mentioned 5 place of warm-air exchanger
After heat-exchanging loop, the motor oil cooling circuit at 6 place of said engine oil cooler and the boost-up circuit where above-mentioned booster 8, punching
The wax packet for stating electronic thermostat 10 is painted, and returns to above-mentioned feed pump 2.
In such a mode, coolant circulation system can be under the premise of above-mentioned sub- water pump 7 run work, by above-mentioned
Motor oil cooling circuit and above-mentioned boost-up circuit, the machine oil and above-mentioned booster 8 of cooling above-mentioned engine；And it is returned by above-mentioned heat exchange
Road provides comfortable heating to passenger inside the vehicle.
Further, since in the entire coolant circulation system stored in above-mentioned expansion kettle 1 total amount 20%~30% cooling
Liquid is not involved in above-mentioned self-loopa, greatly reduces the amount that the coolant liquid of self-loopa is participated in warming-up process, to engine warm-up speed
Degree improves a lot, and can reduce oil consumption and pollutant emission.
In the embodiment illustrated in fig. 6, when engine small-power is run, above-mentioned coolant circulation system work is just
Under regular operation mode, above-mentioned electronic thermostat 10 is half-open (main valve 101, auxiliary-valve 102 are switched on).
Referring to FIG. 8, Fig. 8 shows the coolant liquid loop condition when coolant circulation system work in the normal mode.
As shown in figure 8, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, a portion coolant liquid is from upper
It states independent partial circulating branch 16 to flow out, feed pump 2 is returned directly to by the auxiliary-valve 102 of above-mentioned thermostat 10, thus above-mentioned
It is circulated in self circular loop.By way of compensating above-mentioned feed pump 2 in time, prevent coolant circulation system from cavitation occurs
Phenomenon avoids damage components, to improve the reliability of coolant circulation system.
Another part coolant liquid is flowed out from above-mentioned engine water jacket 3, flows separately through the heat exchange where above-mentioned warm-air exchanger 5
After circuit, the motor oil cooling circuit at 6 place of said engine oil cooler and the boost-up circuit where above-mentioned booster 8, wash away
The wax packet of electronic thermostat 10 is stated, and returns to above-mentioned feed pump 2.
In such a mode, coolant circulation system can be under the premise of above-mentioned sub- water pump 7 run work, by above-mentioned
Motor oil cooling circuit and above-mentioned boost-up circuit, the machine oil and above-mentioned booster 8 of cooling above-mentioned engine.Coolant circulation system is same
When passenger inside the vehicle can also be given to provide comfortable heating by above-mentioned heat-exchanging loop.
And remainder coolant liquid is flowed out from above-mentioned water inlet branch 14, and enters the intake chamber of above-mentioned high temperature heat sink 9, warp
After crossing the heat dissipation of high temperature heat sink 9, feed pump 2 is returned to from the main valve of above-mentioned thermostat 10, thus in above-mentioned heat-radiation loop
It circulates.Flow through the coolant liquid of above-mentioned heat-radiation loop ratio and specific uninterrupted, by the main valve of above-mentioned thermostat 10
101 determine with the opening size of auxiliary-valve 102, so that engine works in optimal operating temperature range.
In the embodiment illustrated in fig. 6, when the high-power operation of engine, above-mentioned coolant circulation system work is in height
Under load operation mode, above-mentioned 10 standard-sized sheet of electronic thermostat (101 standard-sized sheet of main valve, auxiliary-valve 102 close entirely).
Referring to FIG. 9, Fig. 9 is shown when coolant liquid of the coolant circulation system work under high load capacity mode recycles feelings
Condition.As shown in figure 9, coolant liquid enters above-mentioned engine water jacket 3 under the driving of above-mentioned feed pump 2, most of coolant liquid is from upper
It states and is flowed out into water branch 14, and enter the intake chamber of above-mentioned high temperature heat sink 9, after the heat dissipation of high temperature heat sink 9, from above-mentioned
The main valve of thermostat 10 returns to feed pump 2, to circulate in above-mentioned heat-radiation loop, so that engine is in optimal work
Make work in temperature range.
Another fraction coolant liquid is flowed out from above-mentioned engine water jacket 3, flows separately through changing for above-mentioned 5 place of warm-air exchanger
After hot loop, the motor oil cooling circuit at 6 place of said engine oil cooler and the boost-up circuit where above-mentioned booster 8, wash away
The wax packet of above-mentioned electronic thermostat 10, and return to above-mentioned feed pump 2.
In such a mode, coolant circulation system can be under the premise of above-mentioned sub- water pump 7 run work, by above-mentioned
Motor oil cooling circuit and above-mentioned boost-up circuit, the machine oil and above-mentioned booster 8 of cooling above-mentioned engine.Coolant circulation system is same
When passenger inside the vehicle can also be given to provide comfortable heating by above-mentioned heat-exchanging loop.
While reaching full-gear due to the main valve 101 of above-mentioned electronic thermostat 10, auxiliary-valve 102 also can same time-varying
For full off state, to close above-mentioned independent partial circulating branch 16.Under this state model, in independent partial circulating branch 16 almost
There is no coolant rate, the coolant rate for flowing through above-mentioned heat-radiation loop high temperature radiator 9 increases, and follows to improve coolant liquid
Cooling capacity of the loop system under hot environment or the high-power operating status of engine, the operating temperature for controlling engine are unlikely
In excessively high.
In the embodiment illustrated in fig. 6, it stops after vehicle operates normally a period of time, coolant liquid when engine is shut down
Temperature reached threshold temperature or more, above-mentioned coolant circulation system work is under booster refrigerating mode, above-mentioned electronics section
Warm device 10 can be free position.
Referring to FIG. 10, Figure 10 is shown when coolant liquid of the coolant circulation system work under booster refrigerating mode is followed
Ring situation.As shown in Figure 10, after engine stop, above-mentioned feed pump 2 stops working, in coolant circulation system major loop
Coolant liquid stops flowing.Above-mentioned sub- water pump 7 is started to work, and driving coolant liquid is flowed out from above-mentioned pressurization branch 17, and process is above-mentioned
The normally opened channel of electronic thermostat 10, circulates in above-mentioned boost-up circuit, to continue to carry out above-mentioned booster 8 cold
But.The length of above-mentioned 7 working time of sub- water pump, the size of coolant temperature determines after being shut down by engine.Engine is shut down
The temperature of coolant liquid is higher afterwards, then the working time of above-mentioned sub- water pump 7 is longer.
Based on above description, those skilled in the art be will be seen that, coolant liquid cyclic system provided by this preferred embodiment
System accurately controls the coolant rate that heat dissipation circulation is participated under different coolant temperatures by using above-mentioned electronic thermostat 10,
And above-mentioned feed pump 2 is compensated to prevent cavitation；By using above-mentioned flow-limiting valve 4, the degassing effect of degasification branch is improved；
By the way that above-mentioned heat-exchanging loop is arranged, the comfort level of passenger inside the vehicle is improved；By setting said engine oil cooling circuit and it is pressurized back
Road, the machine oil and above-mentioned booster 8 of cooling engine；By the way that low power sub- water pump 7 is arranged, energy consumption is reduced, in above-mentioned implementation
Its reliable operation degree is further improved on the basis of the coolant circulation system that example provides, and is further had preferably cooling
And thermo-mechanical property.
Offer is to make any person skilled in the art all and can make or use this public affairs to the previous description of the disclosure
It opens.The various modifications of the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to other variants without departing from the spirit or scope of the disclosure.The disclosure is not intended to be limited as a result,
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (10)
1. a kind of coolant circulation system, for recycling the coolant liquid in automobile, the coolant circulation system includes engine
Water jacket and high temperature heat sink, the water jacket shunt the coolant liquid to form several circulation loops, several circulation loops
In one flow through the high temperature heat sink, which is characterized in that
The heat-radiation loop for flowing through the high temperature heat sink further includes thermostat and expansion kettle, the water-supplying chamber point of the high temperature heat sink
Be not connected with the water supplement port of the main valve of the thermostat and the expansion kettle, the aperture of the main valve of the thermostat with flow through
The temperature of the coolant liquid of the thermostat is related, to adjust the moisturizing of the water outlet branch and the expansion kettle of the high temperature heat sink
The coolant rate of branch.
2. coolant circulation system as described in claim 1, which is characterized in that the auxiliary-valve of the thermostat starts with described
Machine water jacket is connected to form the self circular loop in several circulation loops, the auxiliary-valve aperture of the thermostat and flows through institute
The temperature for stating the coolant liquid of thermostat is related, to adjust the coolant rate of the self circular loop.
3. coolant circulation system as claimed in claim 2, which is characterized in that the wax packet of the thermostat is according to flowing through
The push rod that the temperatures drive of the coolant liquid of thermostat connects the major and minor valve of the thermostat moves in the cavity of the thermostat
The dynamic aperture to adjust the major and minor valve of the thermostat, wherein
When the main valve standard-sized sheet, the auxiliary-valve closes entirely；When the auxiliary-valve standard-sized sheet, the main valve closes entirely.
4. coolant circulation system as claimed in claim 3, which is characterized in that the thermostat is electronic thermostat, described
Electric heating core is provided in wax packet, the electric heating core is according to the temperature for the coolant liquid for flowing through the thermostat in the wax
It is heated in packet.
5. coolant circulation system as described in claim 1, which is characterized in that the expansion kettle has several except port, institute
It states several one except in port and is connected to the first degasification branch of the engine water jacket formation, it is described several except another in port
One intake chamber for being connected to the high temperature heat sink forms the second degasification branch, wherein the first degasification branch and described
Second degasification branch is provided with flow-limiting valve.
6. coolant circulation system as described in claim 1, which is characterized in that the coolant circulation system further includes heat exchange
Device, a heat-exchanging loop for flowing through the heat exchanger, and flowing through the heat exchanger in several circulation loops flow through described
The normally opened channel of thermostat.
7. coolant circulation system as described in claim 1, which is characterized in that the coolant circulation system further includes machine oil
Cooler, one in several circulation loops flows through the oil cooler, and flows through the cooling of the oil cooler
Circuit flows through the normally opened channel of the thermostat.
8. coolant circulation system as described in claim 1, which is characterized in that the coolant circulation system further includes pressurization
Device, a boost-up circuit for flowing through the booster, and flowing through the booster in several circulation loops flow through described
The normally opened channel of thermostat.
9. coolant circulation system as claimed in claim 8, which is characterized in that the coolant circulation system includes further including
The sub- water pump being connected in the boost-up circuit, the sub- water pump drives the coolant liquid so that the coolant liquid is in the pressurization
It is recycled in circuit.
10. the coolant circulation system as described in any one of claim 6-9, which is characterized in that the coolant liquid cyclic system
System further includes the feed pump being series between the engine water jacket and the thermostat, and the feed pump drives the coolant liquid
So that the coolant liquid, which flows through the engine water jacket and shunts, forms several circulation loops.
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