CN110332039A - A kind of engine-cooling system and control method - Google Patents
A kind of engine-cooling system and control method Download PDFInfo
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- CN110332039A CN110332039A CN201910618508.0A CN201910618508A CN110332039A CN 110332039 A CN110332039 A CN 110332039A CN 201910618508 A CN201910618508 A CN 201910618508A CN 110332039 A CN110332039 A CN 110332039A
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- coolant liquid
- engine
- thermostat
- water
- partial circulating
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
-
- 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
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- 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
-
- 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
Abstract
The present invention provides a kind of engine-cooling system and control methods; when the coolant temperature of engine-cooling system is less than the first preset temperature threshold; engine-cooling system enters partial circulating state; control water pump is pressurized the coolant liquid in engine-cooling system; obtain flowing to the partial circulating coolant liquid of engine water covering device; the valve of waxtype thermostat is simultaneously closed off, to ensure to flow through in oil cooler and gearbox oil cooler without coolant liquid；Engine water covering device shunts partial circulating coolant liquid, obtain flowing to the first partial circulating coolant liquid of partial circulating branch, and flow to the second partial circulating coolant liquid of warm-air drier, and control the first partial circulating coolant liquid and flow into main thermostat through partial circulating branch, the second partial circulating coolant liquid of control is back to main thermostat after warm-air drier is heat-treated.The present invention is to improve to the arrangement of three cylinder engine with supercharger cooling systems, and then reduce thermal loss, realizes the effect of engine rapid warm raising.
Description
Technical field
The present invention relates to technical field of automobile engine more particularly to a kind of engine-cooling system and control methods.
Background technique
Engine-cooling system is one of the important system for ensureing the operation of engine normal table, and major function is to guarantee
Engine has an optimum operating temperature under various operating conditions, and cooling system is to the dynamic property of engine, economy and can
All have a great impact by property.And cooling system temperature is mainly controlled by thermostat, certainly according to the height of engine water temperature
The dynamic circulation route and flow for changing cooling water, always works in engine at most suitable temperature.
For existing three cylinder engine with supercharger of small displacement because thermic load itself is lower, calorific value is smaller in the course of work, causes low
Engine water temperature temperature rise is slower under warm operating condition, and heating effect is bad, and temperature rise makes engine need the long period could be into more slowly
Enter optimum Working, while heating effect is poor will cause the problem of customer complains.
Summary of the invention
The main purpose of the present invention is to provide a kind of engine-cooling system and control methods, it is intended to solve existing three cylinder
Engine with supercharger is because of engine water temperature temperature under the worst cold case caused by thermic load itself is lower, calorific value is smaller in the course of work
It rises compared with slow and bad heating effect technical problem.
Engine-cooling system of the invention include engine water covering device, water pump, main thermostat, gearbox oil cooler,
Warm-air drier, oil cooler and waxtype thermostat；
The main thermostat is less than for obtaining the coolant temperature of coolant liquid in engine in the coolant temperature
When the first preset temperature threshold, the open and-shut mode of the waxtype thermostat valve is detected, is in the waxtype thermostat valve
When open state, the valve of the waxtype thermostat is closed, to ensure in the oil cooler and the gearbox oil cooler
No coolant liquid flows through；
The main thermostat is also used to send partial circulating instruction to the water pump, be started with controlling the water pump to described
Coolant liquid in machine cooling system is pressurized, and the partial circulating coolant liquid for flowing to the engine water covering device is obtained；
The engine water covering device obtains flowing to the partial circulating for shunting the partial circulating coolant liquid
First partial circulating coolant liquid of branch, and the second partial circulating coolant liquid of the warm-air drier is flowed to, and it is small to control described first
Circulating cooling liquid flows into the main thermostat through the partial circulating branch, controls the second partial circulating coolant liquid through the warm wind
The main thermostat is back to after machine heat treatment.
Preferably, the water outlet of the water pump is equipped with the first water pump branch and the second water pump branch, the first water pump branch
Road is connected to the second end of the waxtype thermostat, and the inlet of the second water pump branch and the engine water covering device connects
It is logical；The first end of the waxtype thermostat respectively with the second end of oil cooler and the gearbox oil cooler second
End connection；First liquid outlet of the engine water covering device is equipped with partial circulating branch, the partial circulating branch and the main section
The first end of warm device connects, and the second end of the main thermostat is connect with the water inlet of the water pump；The engine water suit
The second liquid outlet set is connect with the first end of the warm-air drier, and the water inlet of the second end of the warm-air drier and the water pump connects
It connects.
Correspondingly, the main thermostat is also used to when the coolant temperature is greater than the second preset temperature threshold, to institute
It states water pump and sends systemic circulation instruction, and open the valve of the waxtype thermostat；
The water pump is also used to respond the systemic circulation instruction that the main thermostat is sent, is pressurized to the coolant liquid,
It obtains flowing to the first via coolant liquid of the waxtype thermostat, and flows to the second tunnel cooling of the engine water covering device
Liquid；
The waxtype thermostat obtains flowing to institute for shunting the first via coolant liquid by the valve
The first object coolant liquid of oil cooler is stated, and flows to the second target coolant liquid of the gearbox oil cooler；
Preferably, the engine-cooling system further includes radiator；First liquid outlet of the engine water covering device
Connect with the first end of the radiator, the first end of the radiator respectively with the first end of the oil cooler and institute
The connection of the first end of oil cooler is stated, the second end of the radiator is connect with the third end of the main thermostat；
The engine water covering device is also used to shunt second tunnel coolant liquid, obtains flowing to the heat dissipation
The third target coolant liquid of device, and flow to the 4th target coolant liquid of the warm-air drier；
The radiator, for the first object coolant liquid of inflow, the second target coolant liquid and described
Three target coolant liquids carry out radiating treatment, so that the first object coolant liquid, second mesh after radiating treatment
Coolant liquid and the third target coolant liquid are marked as the 5th target coolant liquid and flows into the main thermostat；
The warm-air drier, after being heat-treated to the 4th target coolant liquid, so that the 4th target is cooling
Liquid is back to the water inlet of the water pump.
Preferably, the third end of the main thermostat is equipped with main valve, and the first end of the main thermostat is equipped with auxiliary-valve；
The main thermostat, is also used to close the main valve, opens the auxiliary-valve, to control first partial circulating
Coolant liquid flows into the water inlet of the water pump through the main thermostat.
Preferably, the main thermostat, is also used to open the main valve, closes the auxiliary-valve, to control described
Five target coolant liquids flow into the water inlet of the water pump from the second end of the main thermostat.
Preferably, the engine water covering device includes water jacket cylinder body and water jacket cylinder cap, the engine water covering device
First liquid outlet is set to the first end of the water jacket cylinder body, and the inlet of the engine water covering device is set to the water jacket cylinder
Second liquid outlet of body, the engine water covering device is set to the water jacket cylinder cap.
Preferably, the water jacket cylinder body is equipped with cylinder and pads water hole；
The engine water covering device is also used to shunt the partial circulating coolant liquid by cylinder pad water hole,
So that the part coolant liquid of the partial circulating coolant liquid is as the second partial circulating coolant liquid by described in the water hole inflow of cylinder pad
Water jacket cylinder cap, the partial circulating coolant liquid flow to the warm-air drier by second liquid outlet；
The engine water covering device is also used to shunt second tunnel coolant liquid by cylinder pad water hole,
So that the part coolant liquid of second tunnel coolant liquid flows into the water by cylinder pad water hole as the 4th target coolant liquid
Cylinder cap is covered, the 4th target coolant liquid flows to the warm-air drier by second liquid outlet.
Furthermore to achieve the above object, the present invention also proposes that a kind of control method, the control method are applied to institute as above
The engine-cooling system stated, the control method include:
The main thermostat obtains the coolant temperature of coolant liquid in engine, pre- less than first in the coolant temperature
If when temperature threshold, detecting the open and-shut mode of the waxtype thermostat valve；
The main thermostat closes the valve of the waxtype thermostat when the waxtype thermostat valve is in the open state
Door, to ensure to flow through in the oil cooler and the gearbox oil cooler without coolant liquid；
The main thermostat sends partial circulating instruction to the water pump, so that the water pump is to the engine cool system
Coolant liquid in system is pressurized, and the partial circulating coolant liquid for flowing to the engine water covering device is obtained；
The engine water covering device shunts the partial circulating coolant liquid, obtains flowing to the partial circulating branch
First partial circulating coolant liquid, and flow to the second partial circulating coolant liquid of the warm-air drier；
The engine water covering device controls the first partial circulating coolant liquid and flows into the master through the partial circulating branch
Thermostat, the second partial circulating coolant liquid are back to the main thermostat after warm-air drier heat treatment.
Correspondingly, the control method further include:
When the coolant temperature is greater than the second preset temperature threshold, the transmission of Xiang Suoshu water pump follows greatly the main thermostat
Fourth finger enables, and opens the valve of the waxtype thermostat；
The water pump responds the systemic circulation instruction that the main thermostat is sent, to the coolant liquid in engine-cooling system into
Row pressurization, obtains the first via coolant liquid for flowing to the waxtype thermostat, and flow to the second of the engine water covering device
Road coolant liquid；
The waxtype thermostat shunts the first via coolant liquid by the valve, obtains flowing to the machine oil
The first object coolant liquid of cooler, and flow to the second target coolant liquid of the gearbox oil cooler；
The engine water covering device shunts second tunnel coolant liquid, obtains the third for flowing to the radiator
Target coolant liquid, and flow to the 4th target coolant liquid of the warm-air drier；
The first object coolant liquid, the second target coolant liquid and the third target of the radiator to inflow
Coolant liquid carries out radiating treatment, so that the first object coolant liquid, the second target coolant liquid after radiating treatment
The main thermostat is flowed into as the 5th target coolant liquid with the third target coolant liquid；
After the warm-air drier is heat-treated the 4th target coolant liquid, so that the 4th target coolant liquid flows back
To the water inlet of the water pump.
Engine-cooling system of the invention include engine water covering device, water pump, main thermostat, gearbox oil cooler,
Warm-air drier, oil cooler and waxtype thermostat；When the coolant temperature is less than the first preset temperature threshold, engine is cold
But system enters partial circulating state, and control water pump is pressurized the coolant liquid in engine-cooling system, obtains flow direction and starts
The partial circulating coolant liquid of machine water jacketing, simultaneously closes off the valve of waxtype thermostat, to ensure oil cooler and gear box oil
It is flowed through in cooler without coolant liquid；Engine water covering device shunts partial circulating coolant liquid, obtains flowing to partial circulating branch
First partial circulating coolant liquid, and the second partial circulating coolant liquid of warm-air drier is flowed to, and control the first partial circulating coolant liquid through small
Circulation branch road flows into main thermostat, and the second partial circulating coolant liquid of control is back to main thermostat after warm-air drier is heat-treated.This hair
Bright is to improve to the arrangement of three cylinder engine with supercharger cooling systems, and then reduce thermal loss, realizes that engine is quickly warm
The effect risen.
Detailed description of the invention
Fig. 1 be the engine-cooling system in one embodiment of the invention into partial circulating operating condition when structural schematic diagram；
Fig. 2 be the engine-cooling system in one embodiment of the invention into systemic circulation operating condition when structural schematic diagram；
Fig. 3 is the another structural schematic diagram of the engine-cooling system in one embodiment of the invention；
Fig. 4 is the first embodiment flow diagram for the control method that the present invention is applied to engine-cooling system；
Fig. 5 is the second embodiment flow diagram for the control method that the present invention is applied to engine-cooling system.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The embodiment of the present invention provides a kind of engine-cooling system, and with reference to Fig. 1, Fig. 1 is the engine-cooling system
Structural schematic diagram when into partial circulating operating condition.
The engine-cooling system include engine water covering device 1, water pump 3, main thermostat 6, gearbox oil cooler 7,
Warm-air drier 8, oil cooler 9 and waxtype thermostat 12；The water outlet of the water pump 3 is equipped with the first water pump branch and the second water pump
Branch, the first water pump branch are connected to the second end of the waxtype thermostat 12, the second water pump branch and the hair
The inlet of motivation water jacketing 1 is connected to；The first end of the waxtype thermostat 12 respectively with the second end of oil cooler 9,
And the second end connection of the gearbox oil cooler 7；First liquid outlet of the engine water covering device 1 is equipped with partial circulating branch
Road 11, the partial circulating branch 11 are connect with the first end C of the main thermostat 6, the second end B of the main thermostat 6 and institute
State the water inlet connection of water pump 3；Second liquid outlet of the engine water covering device is connect with the first end of the warm-air drier 8,
The second end of the warm-air drier 8 is connect with the water inlet of the water pump 3；
The main thermostat 6 is less than for obtaining the coolant temperature of coolant liquid in engine in the coolant temperature
When the first preset temperature threshold, the open and-shut mode of the waxtype thermostat valve is detected, is in the waxtype thermostat valve
When open state, the valve of the waxtype thermostat is closed, to ensure in the oil cooler and the gearbox oil cooler
No coolant liquid flows through；
The main thermostat 6 is also used to send partial circulating instruction to the water pump, be started with controlling the water pump to described
Coolant liquid in machine cooling system is pressurized, and the partial circulating coolant liquid for flowing to the engine water covering device is obtained；
It will be appreciated that main thermostat 6 is the valve for controlling coolant flow paths in the present embodiment, it is a kind of automatic
Register, main thermostat 6 includes the temperature module, for obtaining the coolant temperature of coolant liquid in engine, in the cooling
When liquid temperature is less than the first preset temperature threshold, the engine-cooling system will enter partial circulating operating condition, and the of the present embodiment
One preset temperature threshold is preferably 70 degree.
The engine water covering device 1 obtains flowing to the partial circulating for shunting the partial circulating coolant liquid
First partial circulating coolant liquid of branch, and the second partial circulating coolant liquid of the warm-air drier is flowed to, and it is small to control described first
Circulating cooling liquid flows into the main thermostat through the partial circulating branch, controls the second partial circulating coolant liquid through the warm wind
The main thermostat is back to after machine heat treatment.
It will be appreciated that waxtype thermostat 12 is not turned on, and oil cooler 9 and gear box oil are cold when partial circulating is opened
Device 7 passes through without coolant liquid, and coolant liquid flows through after engine water covering device 1 through special partial circulating channel 11, passes through main section temperature
The first end C of device 6 flows through the auxiliary-valve of main thermostat 6, and converges inflow water pump with the second partial circulating coolant liquid through warm-air drier 8
In 3.
The engine-cooling system of the present embodiment under low temperature partial circulating operating condition, close by waxtype thermostat 12, and machine oil is cooling
Device 9 and gearbox oil cooler 7 are flowed through without coolant liquid, are reduced coolant liquid and are heated to machine oil and gear box oil, and then reduce heat
Loss, promoted temperature rise rate.Since coolant liquid is no longer flowed to oil cooler 9 and gearbox oil cooler 7, flow direction will increase
The coolant liquid of cylinder body water jacket of engine 2, and then also will increase the coolant liquid for flowing to warm-air drier 8, be conducive to improve warm wind effect.
Further, enter systemic circulation referring to Fig. 2, Fig. 2 for engine-cooling system described in one embodiment of the invention
Structural schematic diagram when operating condition.
In the present embodiment, the engine-cooling system further includes radiator 4；The first of the engine water covering device goes out
Liquid mouth is connect with the first end of the radiator 4, the first end of the radiator 4 respectively with the oil cooler 9 first
The connection of the first end of end and the oil cooler 7, the third of the second end of the radiator 4 and the main thermostat 6
Hold A connection；
The main thermostat 6 is also used to when the coolant temperature is greater than the second preset temperature threshold, Xiang Suoshu water pump
3 send systemic circulation instruction, and open the valve of the waxtype thermostat 7；
The water pump 3 is also used to respond the systemic circulation instruction that the main thermostat is sent, increases to the coolant liquid
Pressure, obtain the first via coolant liquid for flowing to the waxtype thermostat, and flow to the engine water covering device the second road it is cold
But liquid；
It should be noted that second preset temperature threshold of the present embodiment is preferably 86 degree, it is big in the coolant temperature
When 86 degree, the engine-cooling system enters systemic circulation operating condition；
The waxtype thermostat 12 is flowed to for being shunted by the valve to the first via coolant liquid
The first object coolant liquid of the oil cooler, and flow to the second target coolant liquid of the gearbox oil cooler.
The engine water covering device 1 is also used to shunt second tunnel coolant liquid, obtains flowing to the heat dissipation
The third target coolant liquid of device, and flow to the 4th target coolant liquid of the warm-air drier；
The radiator 4, for the first object coolant liquid of inflow, the second target coolant liquid and described
Three target coolant liquids carry out radiating treatment, so that the first object coolant liquid, second mesh after radiating treatment
Coolant liquid and the third target coolant liquid are marked as the 5th target coolant liquid and flows into the main thermostat；
The warm-air drier 8, after being heat-treated to the 4th target coolant liquid, so that the 4th target is cooling
Liquid is back to the water inlet of the water pump.
Further, in the present embodiment, the engine water covering device 1 includes water jacket cylinder body 102 and water jacket cylinder cap
101, the first liquid outlet of the engine water covering device 1 is set to the first end of the water jacket cylinder body 102, the engine water jacket
The inlet of device is set to the water jacket cylinder body 102, and the second liquid outlet of the engine water covering device 1 is set to the water jacket cylinder
Lid 101.
The engine water covering device 1 is also used to shunt the partial circulating coolant liquid by cylinder pad water hole,
So that the part coolant liquid of the partial circulating coolant liquid is as the second partial circulating coolant liquid as described in the water jacket cylinder body 102 process
Cylinder pads water hole and flows into the water jacket cylinder cap 101, and the partial circulating coolant liquid flows to the warm-air drier by second liquid outlet
8；
The engine water covering device 1 is also used to shunt second tunnel coolant liquid by cylinder pad water hole,
So that the part coolant liquid of second tunnel coolant liquid passes through the cylinder by the water jacket cylinder body 102 as the 4th target coolant liquid
It pads water hole and flows into the water jacket cylinder cap 101, the 4th target coolant liquid flows to the warm-air drier by second liquid outlet.
It will be appreciated that, when systemic circulation is opened, after coolant liquid is pressurized by mechanical water pump 3, being divided into two in the present embodiment
Road flows to waxtype thermostat 12 all the way, and another way flows into cylinder body water jacket of engine 2, and pads water hole by cylinder and flow to cylinder cover water jacket
101, part coolant liquid flows out to warm-air drier 8 by cylinder cap 101, in addition main coolant liquid by cylinder cap 101 flow back to cylinder body 102 and by
Cylinder body 102 flows out, and converges with the coolant liquid for flowing through oil cooler 9 and flows to radiator 4, then passes through the third end of main thermostat
Entrance A flows through the main valve of thermostat 6.In addition the coolant liquid for flowing through waxtype thermostat 12 is divided into two-way, and it is cold to flow to machine oil all the way
But device 9, another way flow to gearbox oil cooler 7, before this two-way coolant liquid flows to radiator 4, flow through radiator 4 jointly.It flows through
Before the coolant liquid of warm-air drier 8 flows directly to water pump 3 by F mouthfuls.
It,, can before 8 coolant liquid of warm-air drier is directly guided to water pump before warm wind directly flows to water pump by F mouthfuls in the present embodiment
Pressure before pump to improve water pump 3 reduces the risk that cavitation occurs for water pump, and then eliminates the negative shadow of moisturizing bring before thermostat
It rings.
The present embodiment may be implemented under systemic circulation operating condition, increase the purpose for passing through radiator flow, and it is flat to reduce engine thermal
Weigh undesirable risk.
It further, is that the another structure of engine-cooling system described in one embodiment of the invention is shown referring to Fig. 3, Fig. 3
It is intended to.
In the present embodiment, the third end A of the main thermostat 6 is equipped with main valve 61, and the first end C of the main thermostat is set
There is auxiliary-valve 62；
The main thermostat 6 is also used to close the main valve 61, opens the auxiliary-valve 62, to control described first
Partial circulating coolant liquid flows into the water inlet of the water pump 3 through the main thermostat.
The present embodiment can realize the moisturizing to the main thermostat 6, and the former expansion tank 10 in engine-cooling system is mended
Moisturizing before water changes to main thermostat carries out moisturizing by water supplement port G.Due to the main valve of thermostat 6 described under partial circulating operating condition
61 are in off state, refill flow zero, and then the inner stream flow of the purge cycle pipeline of the radiator 4 is zero, and institute
The inner stream flow for stating the purge cycle pipeline of water jacket cylinder cap 101 is zero, is conducive to reduce described scattered in engine-cooling system
The thermal loss of hot device 4 and original expansion tank 10.Original two degasification pipelines (degasification of radiator 4 can be removed simultaneously
The purge cycle pipeline of circulation line and water jacket cylinder cap) on throttle valve, reduce cost.
Correspondingly, the main thermostat 6 is also used to open the main valve 61, the auxiliary-valve 62 is closed, to control
State the water inlet that the 5th target coolant liquid flows into the water pump 3 from the second end of the main thermostat.
The present embodiment can also realize under the systemic circulation operating condition of engine-cooling system, the main valve 61 of main thermostat 6
It opens, the coolant liquid for flowing through radiator 4 includes the coolant liquid of gearbox oil cooler 7, increase the effective discharge for flowing through radiator 4,
And then improve the cooling effect under thermal balance operating condition.
Based on the hardware configuration of above-mentioned engine-cooling system, proposes that the present invention is a kind of and be applied to above-mentioned engine cool system
The first embodiment of the control method of system.
In the present embodiment, in conjunction with Fig. 3 and refer to Fig. 4, the control method the following steps are included:
Step S10: the main thermostat obtains the coolant temperature of coolant liquid in engine, small in the coolant temperature
When the first preset temperature threshold, the open and-shut mode of the waxtype thermostat valve is detected；
Step S20: the main thermostat closes the wax formula section when the waxtype thermostat valve is in the open state
The valve of warm device, to ensure to flow through in the oil cooler and the gearbox oil cooler without coolant liquid；
Step S30: the main thermostat sends partial circulating instruction to the water pump, so that the water pump starts to described
Coolant liquid in machine cooling system is pressurized, and the partial circulating coolant liquid for flowing to the engine water covering device is obtained；
Step S40: the engine water covering device shunts the partial circulating coolant liquid, obtains flowing to described small follow
First partial circulating coolant liquid of ring branch, and flow to the second partial circulating coolant liquid of the warm-air drier；
Step S50: the engine water covering device controls the first partial circulating coolant liquid through the partial circulating branch stream
Enter the main thermostat, the second partial circulating coolant liquid is back to the main thermostat after warm-air drier heat treatment.
It will be appreciated that the present embodiment realizes cooler for engine oil and gear box oil by increasing waxtype thermostat
Cooler branch realizes on-off according to temperature, and then improves the temperature rise rate of engine under partial circulating operating condition.When partial circulating is opened,
Waxtype thermostat 12 is not turned on, and oil cooler 9 and gearbox oil cooler 7 pass through without coolant liquid, and coolant liquid flows through cylinder body water
Through special partial circulating channel 11 after set 2, the auxiliary-valve 62 of main thermostat 6 is flowed through by the entrance C on thermostat valve seat 5, and
Converge with the coolant liquid of warm-air drier 8 and flows into water pump 3.And then may be implemented under low temperature partial circulating operating condition, waxtype thermostat 12 closes
It closing, oil cooler 9 and gearbox oil cooler 7 are flowed through without coolant liquid, and reduce coolant liquid and is heated to machine oil and gear box oil, into
And reduce the loss of heat, promote temperature rise rate.In addition coolant liquid is no longer flowed to oil cooler 9 and gearbox oil cooler 7,
It will increase the coolant liquid for flowing to cylinder body water jacket of engine 2, and then also will increase the coolant liquid for flowing to warm-air drier 8, be conducive to improve
Warm wind effect.
Further, in this embodiment with reference to Fig. 5, the control method the following steps are included:
Step S10`: the main thermostat is when the coolant temperature is greater than the second preset temperature threshold, Xiang Suoshu water
Pump sends systemic circulation instruction, and opens the valve of the waxtype thermostat；
Step S20`: the water pump responds the systemic circulation instruction that the main thermostat is sent, in engine-cooling system
Coolant liquid be pressurized, obtain the first via coolant liquid for flowing to the waxtype thermostat, and flow to the engine water jacket
Second tunnel coolant liquid of device；
Step S30`: the waxtype thermostat shunts the first via coolant liquid by the valve, is flowed
To the first object coolant liquid of the oil cooler, and flow to the second target coolant liquid of the gearbox oil cooler；
Step S40`: the engine water covering device shunts second tunnel coolant liquid, obtains flowing to described dissipate
The third target coolant liquid of hot device, and flow to the 4th target coolant liquid of the warm-air drier；
Step S50`: the first object coolant liquid, the second target coolant liquid and institute of the radiator to inflow
It states third target coolant liquid and carries out radiating treatment, so that the first object coolant liquid after radiating treatment, described second
Target coolant liquid and the third target coolant liquid are as the 5th target coolant liquid inflow main thermostat；
Step S60`: after the warm-air drier is heat-treated the 4th target coolant liquid, so that the 4th target
Coolant liquid is back to the water inlet of the water pump.
It will be appreciated that, when the systemic circulation of engine-cooling system is opened, coolant liquid is by mechanical water pump in the present embodiment
After 3 pressurizations, it is divided into two-way, flows to waxtype thermostat 12 all the way, another way flows into cylinder body water jacket of engine 2, and pads water by cylinder
Hole flows to cylinder cover water jacket 1, and part coolant liquid flows out to warm-air drier 8 by cylinder cap, and in addition main coolant liquid flows back to cylinder body by cylinder cap
And flowed out by cylinder body, converge with the coolant liquid for flowing through oil cooler 9 and flow to radiator 4, then by thermostat valve seat 5
Entrance A flows through the main valve 61 of main thermostat 6.In addition the coolant liquid for flowing through waxtype thermostat 12 is divided into two-way, flows to machine all the way
Oil cooler 9, another way flow to gearbox oil cooler 7, before this two-way coolant liquid flows to radiator 4, flow through radiator 4 jointly.
Flow through warm-air drier 8 coolant liquid flow directly to water pump 3 by F mouthfuls before.
The present embodiment can be realized under the systemic circulation operating condition of engine, and the main valve 61 of main thermostat 6 is opened, and flow through scattered
The coolant liquid of hot device 4 includes the coolant liquid of gearbox oil cooler 7, increases the effective discharge for flowing through radiator 4, and then it is flat to improve heat
Cooling effect under the operating condition that weighs.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity or sequence of indicated technical characteristic.In description of the invention, unless otherwise indicated, " a plurality of ",
The meaning of " plurality " is two (two) or two (two) or more.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of engine-cooling system, which is characterized in that the engine-cooling system includes engine water covering device, water
Pump, main thermostat, gearbox oil cooler, warm-air drier, oil cooler and waxtype thermostat；
The main thermostat, for obtaining the coolant temperature of coolant liquid in engine, in the coolant temperature less than first
When preset temperature threshold, the open and-shut mode of the waxtype thermostat valve is detected, is in and opens in the waxtype thermostat valve
When state, the valve of the waxtype thermostat is closed, to ensure in the oil cooler and the gearbox oil cooler without cold
But liquid stream mistake；
The main thermostat is also used to send partial circulating instruction to the water pump, cold to the engine to control the water pump
But the coolant liquid in system is pressurized, and obtains the partial circulating coolant liquid for flowing to the engine water covering device；
The engine water covering device obtains flowing to the partial circulating branch for shunting the partial circulating coolant liquid
The first partial circulating coolant liquid, and flow to the second partial circulating coolant liquid of the warm-air drier, and control first partial circulating
Coolant liquid flows into the main thermostat through the partial circulating branch, controls the second partial circulating coolant liquid through the warm-air drier heat
The main thermostat is back to after processing.
2. engine-cooling system as described in claim 1, which is characterized in that the water outlet of the water pump is equipped with the first water pump
Branch and the second water pump branch, the first water pump branch are connected to the second end of the waxtype thermostat, second water pump
Branch is connected to the inlet of the engine water covering device；The first end of the waxtype thermostat respectively with oil cooler
Second end and the connection of the second end of the gearbox oil cooler；First liquid outlet of the engine water covering device is equipped with small
Circulation branch road, the partial circulating branch are connect with the first end of the main thermostat, the second end of the main thermostat with it is described
The water inlet of water pump connects；Second liquid outlet of the engine water covering device is connect with the first end of the warm-air drier, described
The second end of warm-air drier is connect with the water inlet of the water pump.
3. engine-cooling system as claimed in claim 2, which is characterized in that the main thermostat is also used to described cold
But when liquid temperature is greater than the second preset temperature threshold, Xiang Suoshu water pump sends systemic circulation instruction, and opens the waxtype thermostat
Valve；
The water pump is also used to respond the systemic circulation instruction that the main thermostat is sent, is pressurized, obtains to the coolant liquid
The first via coolant liquid of the waxtype thermostat is flowed to, and flows to the second tunnel coolant liquid of the engine water covering device；
The waxtype thermostat obtains flowing to the machine for shunting the first via coolant liquid by the valve
The first object coolant liquid of oil cooler, and flow to the second target coolant liquid of the gearbox oil cooler.
4. engine-cooling system as claimed in claim 3, which is characterized in that the engine-cooling system further includes heat dissipation
Device；First liquid outlet of the engine water covering device is connect with the first end of the radiator, the first end of the radiator
Respectively with the connection of the first end of the oil cooler and the first end of the oil cooler, the second of the radiator
End is connect with the third end of the main thermostat；
The engine water covering device is also used to shunt second tunnel coolant liquid, obtains flowing to the radiator
Third target coolant liquid, and flow to the 4th target coolant liquid of the warm-air drier；
The radiator, for the first object coolant liquid, the second target coolant liquid and the third mesh to inflow
It marks coolant liquid and carries out radiating treatment, so that the first object coolant liquid, second target after radiating treatment are cold
But liquid and the third target coolant liquid are as the 5th target coolant liquid inflow main thermostat；
The warm-air drier, after being heat-treated to the 4th target coolant liquid, so that the 4th target coolant liquid is returned
It flow to the water inlet of the water pump.
5. engine-cooling system according to any one of claims 1-4, which is characterized in that the third end of the main thermostat
Equipped with main valve, the first end of the main thermostat is equipped with auxiliary-valve；
The main thermostat, is also used to close the main valve, opens the auxiliary-valve, cooling to control first partial circulating
Liquid flows into the water inlet of the water pump through the main thermostat.
6. engine-cooling system as claimed in claim 5, which is characterized in that the main thermostat is also used to open described
Main valve closes the auxiliary-valve, to control the 5th target coolant liquid from described in the inflow of the second end of the main thermostat
The water inlet of water pump.
7. engine-cooling system according to any one of claims 1-4, which is characterized in that the engine water covering device packet
Water jacket cylinder body and water jacket cylinder cap are included, the first liquid outlet of the engine water covering device is set to the first end of the water jacket cylinder body,
The inlet of the engine water covering device is set to the water jacket cylinder body, and the second liquid outlet of the engine water covering device is set to
The water jacket cylinder cap.
8. engine-cooling system as claimed in claim 7, which is characterized in that the water jacket cylinder body is equipped with cylinder and pads water hole；
The engine water covering device is also used to shunt the partial circulating coolant liquid by cylinder pad water hole, so that
The part coolant liquid of the partial circulating coolant liquid flows into the water jacket by cylinder pad water hole as the second partial circulating coolant liquid
Cylinder cap, the partial circulating coolant liquid flow to the warm-air drier by second liquid outlet；
The engine water covering device is also used to shunt second tunnel coolant liquid by cylinder pad water hole, so that
The part coolant liquid of second tunnel coolant liquid flows into the water jacket cylinder by cylinder pad water hole as the 4th target coolant liquid
Lid, the 4th target coolant liquid flow to the warm-air drier by second liquid outlet.
9. a kind of control method, which is characterized in that the control method is applied to start as claim 1-8 is described in any item
Machine cooling system, the control method include:
The main thermostat obtains the coolant temperature of coolant liquid in engine, in the coolant temperature less than the first default temperature
When spending threshold value, the open and-shut mode of the waxtype thermostat valve is detected；
The main thermostat closes the valve of the waxtype thermostat when the waxtype thermostat valve is in the open state,
To ensure to flow through in the oil cooler and the gearbox oil cooler without coolant liquid；
The main thermostat sends partial circulating instruction to the water pump, so that the water pump is in the engine-cooling system
Coolant liquid be pressurized, obtain the partial circulating coolant liquid for flowing to the engine water covering device；
The engine water covering device shunts the partial circulating coolant liquid, obtains flowing to the first of the partial circulating branch
Partial circulating coolant liquid, and flow to the second partial circulating coolant liquid of the warm-air drier；
The engine water covering device controls the first partial circulating coolant liquid and flows into the main section temperature through the partial circulating branch
Device, the second partial circulating coolant liquid are back to the main thermostat after warm-air drier heat treatment.
10. control method as claimed in claim 9, which is characterized in that
When the coolant temperature is greater than the second preset temperature threshold, Xiang Suoshu water pump sends systemic circulation and refers to the main thermostat
It enables, and opens the valve of the waxtype thermostat；
The water pump responds the systemic circulation instruction that the main thermostat is sent, and increases to the coolant liquid in engine-cooling system
Pressure, obtain the first via coolant liquid for flowing to the waxtype thermostat, and flow to the engine water covering device the second road it is cold
But liquid；
The waxtype thermostat shunts the first via coolant liquid by the valve, obtains flowing to the machine oil cooling
The first object coolant liquid of device, and flow to the second target coolant liquid of the gearbox oil cooler；
The engine water covering device shunts second tunnel coolant liquid, obtains the third target for flowing to the radiator
Coolant liquid, and flow to the 4th target coolant liquid of the warm-air drier；
The radiator is cooling to the first object coolant liquid, the second target coolant liquid and the third target of inflow
Liquid carries out radiating treatment, so that the first object coolant liquid, the second target coolant liquid and institute after radiating treatment
Third target coolant liquid is stated as the 5th target coolant liquid and flows into the main thermostat；
After the warm-air drier is heat-treated the 4th target coolant liquid, so that the 4th target coolant liquid is back to institute
State the water inlet of water pump.
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| CN201910618508.0A CN110332039B (en) | 2019-07-09 | 2019-07-09 | Engine cooling system and control method |
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