CN115387896B - Gas-liquid hybrid cooling system, control method thereof, vehicle and readable storage medium - Google Patents
Gas-liquid hybrid cooling system, control method thereof, vehicle and readable storage medium Download PDFInfo
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- CN115387896B CN115387896B CN202211044279.4A CN202211044279A CN115387896B CN 115387896 B CN115387896 B CN 115387896B CN 202211044279 A CN202211044279 A CN 202211044279A CN 115387896 B CN115387896 B CN 115387896B
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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
- F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
- F01P9/04—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00 by simultaneous or alternative use of direct air-cooling and 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
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10255—Arrangements of valves; Multi-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
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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
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
- F01P2001/023—Cooling cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a gas-liquid mixed cooling system, a control method thereof, a vehicle and a readable storage medium, and belongs to the technical field of vehicle heat dissipation. The invention provides a gas-liquid mixed cooling system applied to an engine, which comprises the following components: the cylinder water jacket is used for exchanging heat for the engine; the output end of the water pump is communicated with the input end of the cylinder water jacket, the input end of the water pump is communicated with the output end of the cylinder water jacket, and the water pump is used for inputting low-temperature cooling liquid into the cylinder water jacket; the input end of the heat radiation module is communicated with the output end of the cylinder water jacket, the output end of the heat radiation module is communicated with the water pump, and the heat radiation module is used for radiating high-temperature cooling liquid flowing out through the cylinder water jacket; the air supply module is respectively communicated with the input end of the cylinder water jacket and the input end of the heat dissipation module, and is used for inputting air into the cylinder water jacket and/or the heat dissipation module to adjust the heat dissipation capacity of the cooling liquid so as to adapt to different operation conditions of the vehicle engine.
Description
Technical Field
The invention relates to the technical field of vehicle heat dissipation, in particular to a gas-liquid hybrid cooling system, a control method thereof, a vehicle and a readable storage medium.
Background
In the running process of the vehicle engine, a cooling system is needed to take away redundant heat so as to ensure that the engine runs in a proper temperature range and prevent abnormal combustion problems such as knocking caused by overhigh temperature.
The existing vehicle cooling system generally adopts liquid cooling liquid, and mainly has the following problems: the heat transfer coefficient of the same kind of cooling liquid is determined, and the cooling cost is increased by adopting the cooling liquid with higher heat transfer coefficient or increasing the area of the radiator; the heat dissipation capacity of the engine is different in the whole working engineering, for example, the engine needs to be warmed up as soon as possible in the starting stage in winter, and then the heat dissipation capacity needs to be reduced; during the high-speed and high-torque running condition of the engine, the excessive heat needs to be dissipated as soon as possible so as to avoid the high Wen Baozhen of the engine, and the heat dissipation capacity needs to be increased. However, the heat absorbing capacity of the coolant is fixed after the coolant is selected, and cannot be adjusted according to the engine operating conditions.
Disclosure of Invention
The invention mainly aims to provide a gas-liquid mixed cooling system, a control method thereof, a vehicle and a readable storage medium, and aims to solve the technical problem of how to adjust the heat dissipation capacity of cooling liquid so as to adapt to different operation conditions of a vehicle engine.
In order to achieve the above object, the present invention provides a gas-liquid hybrid cooling system applied to an engine, comprising:
the cylinder water jacket is used for exchanging heat for the engine;
the output end of the water pump is communicated with the input end of the cylinder water jacket, the input end of the water pump is communicated with the output end of the cylinder water jacket, and the water pump is used for inputting low-temperature cooling liquid into the cylinder water jacket;
the input end of the heat radiation module is communicated with the output end of the cylinder water jacket, the output end of the heat radiation module is communicated with the water pump, and the heat radiation module is used for radiating high-temperature cooling liquid flowing out through the cylinder water jacket;
the air supply module is respectively communicated with the input end of the cylinder water jacket and the input end of the heat dissipation module, and is used for inputting air into the cylinder water jacket and/or the heat dissipation module to adjust the heat dissipation capacity of the cooling liquid.
Optionally, the gas-liquid mixing cooling system further comprises:
the first gas-liquid separator is arranged between the output end of the cylinder water jacket and the input end of the heat radiation module, the input end of the first gas-liquid separator is communicated with the output end of the cylinder water jacket, and the liquid output end of the first gas-liquid separator is communicated with the input end of the heat radiation module;
the second gas-liquid separator is arranged between the output end of the cylinder water jacket and the output end of the heat dissipation module and the input end of the water pump, the input end of the second gas-liquid separator is respectively communicated with the output end of the cylinder water jacket and the output end of the heat dissipation module, and the liquid output end of the second gas-liquid separator is communicated with the input end of the water pump.
Optionally, the gas-liquid mixing cooling system further comprises:
the thermostat is arranged at the output end of the cylinder water jacket and comprises a main valve and an auxiliary valve, the main valve is communicated with the input end of the first gas-liquid separator, and the auxiliary valve is communicated with the input end of the second gas-liquid separator.
Optionally, the gas-liquid mixing cooling system further comprises:
the pressure sensor is arranged at the input end of the cylinder water jacket and is used for monitoring the injection pressure of the cooling liquid;
the pressure relief bypass valve is arranged between the output end of the cylinder water jacket and the input end of the first gas-liquid separator.
Optionally, the heat dissipation module includes:
a fan;
the radiator is arranged on the air outlet duct of the fan, the input end of the radiator is communicated with the output end of the cylinder water jacket, and the output end of the radiator is communicated with the water pump;
and the temperature sensor is arranged at the output end of the radiator.
Optionally, the air supply module includes:
the engine air supply unit is connected with the engine and is used for controlling the air inflow of the engine;
the input end of the air tank is communicated with the output end of the engine air supply unit, the output end of the air tank is respectively communicated with the input end of the air cylinder water jacket and the input end of the heat radiation module, and the air tank is used for storing air from the intercooler;
the gas storage bypass valve is arranged between the output end of the engine gas supply unit and the input end of the gas tank;
the check valve is communicated with the output end of the gas tank and the engine gas supply unit;
a first flow pressure controller disposed between an output end of the gas tank and an input end of the cylinder water jacket;
and the second flow pressure controller is arranged between the output end of the gas tank and the input end of the radiator.
Optionally, the engine air supply unit includes:
an air filter for filtering impurities in the air;
the supercharger is connected with the engine, the input end of the supercharger is communicated with the output end of the air filter, and the supercharger is used for compressing air;
the input end of the intercooler is communicated with the output end of the supercharger, and the intercooler is used for cooling air;
the input end of the throttle valve is communicated with the output end of the intercooler, the output end of the throttle valve is communicated with the engine, and the throttle valve is used for controlling the air inflow of the engine.
In addition, in order to achieve the above object, the present invention also provides a control method of a gas-liquid hybrid cooling system, the control method of the gas-liquid hybrid cooling system being applied to the gas-liquid hybrid cooling system as described above, the control method of the gas-liquid hybrid cooling system comprising the steps of:
acquiring the current running condition of a vehicle engine;
determining a heat dissipation mode according to the current operation condition;
adjusting the flow direction of cooling liquid in the gas-liquid mixed cooling system according to the heat radiation mode;
and adjusting the air flow injected into the cylinder water jacket and/or the heat dissipation module by the air supply module according to the heat dissipation mode so as to adjust the heat dissipation capacity of the cooling liquid.
In addition, to achieve the above object, the present invention also provides a vehicle including: the system comprises a memory, a processor and a mixed cooling control program which is stored in the memory and can run on the processor, wherein the mixed cooling control program realizes the steps of the control method of the gas-liquid mixed cooling system when being executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a hybrid cooling control program which, when executed by a processor, implements the steps of the control method of the gas-liquid hybrid cooling system as described above.
The invention provides a gas-liquid mixed cooling system, a control method thereof, a vehicle and a readable storage medium, and overcomes the technical defect that the heat absorption capacity of a selected cooling liquid in the prior art cannot be adjusted according to the running working condition of an engine. The invention adjusts the heat dissipation capacity of the engine by injecting clean air into the cooling liquid and changing the heat transfer coefficient of the cooling liquid. When the engine is warmed up, a certain amount of air is introduced to form a gas film on the surface of the cylinder water jacket, so that heat transfer is weakened, and heat taken away from the engine by cooling liquid is reduced. After the engine normally runs, a small amount of air is introduced, and bubbles generated by the air can aggravate the turbulence degree of the cooling liquid in the cylinder water jacket and destroy the boundary layer, so that the function of increasing the heat transfer coefficient is achieved. When the cooling liquid returns to the radiator, air bubbles can move from the bottom of the radiator to the top of the radiator under the action of buoyancy, the movement of the air bubbles can increase the turbulence of the cooling liquid and damage the flowing boundary layer of the cooling liquid, and the mixing of the boundary layer and the non-boundary layer is increased, so that the heat transfer quantity is increased, and the heat dissipation is enhanced.
Compared with the prior art, the invention can be based on the fact that clean air is introduced into the cooling liquid by the gas-liquid mixed cooling system, and the heat dissipation efficiency is adjusted on the premise of not changing the volume of the radiator and the cooling liquid; the heat dissipation capacity is adjusted according to the operation condition of the engine by controlling the air quantity of the cooling liquid; meanwhile, in the running process of the vehicle, a great part of pollutants emitted by the engine are generated in the warming-up process, and the invention can shorten the warming-up time and reduce the pollutant emission by reducing the heat dissipation capacity in the engine warming-up process; for a supercharged engine, the air depressurized by the intercooling recirculation valve can be directly used for mixing with cooling liquid, so that other energy is not consumed, the heat dissipation energy consumption is reduced, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a system frame of an embodiment of a gas-liquid hybrid cooling system according to the present invention;
FIG. 2 is a schematic diagram of a gas-liquid hybrid cooling system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detailed structure of an embodiment of a gas-liquid hybrid cooling system according to the present invention;
FIG. 4 is a flow chart of an embodiment of a control method of a gas-liquid hybrid cooling system according to the present invention;
fig. 5 is a schematic structural view of a vehicle according to an embodiment of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Cylinder water jacket | 20 | Water pump |
| 30 | Heat radiation module | 31 | Fan with fan body |
| 32 | Radiator | 33 | Temperature sensor |
| 40 | Air supply module | 41 | Engine air supply unit |
| 411 | Air filter | 412 | Supercharger |
| 413 | Intercooler | 414 | Throttle valve |
| 42 | Gas tank | 43 | Gas storage bypass valve |
| 44 | One-way valve | 45 | First flow pressure controller |
| 46 | Second flow pressure controller | 51 | First gas-liquid separator |
| 52 | Second gas-liquid separator | 60 | Thermostat |
| 70 | Pressure sensor | 80 | Pressure relief bypass valve |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the invention provides a gas-liquid mixing cooling system, and referring to fig. 1, fig. 1 is a schematic diagram of a system frame of an embodiment of the gas-liquid mixing cooling system.
In this embodiment, the gas-liquid hybrid cooling system is applied to an engine, and the gas-liquid hybrid cooling system includes:
a cylinder water jacket 10, wherein the cylinder water jacket 10 is used for exchanging heat for the engine;
a water pump 20, wherein an output end of the water pump 20 is communicated with an input end of the cylinder water jacket 10, an input end of the water pump 20 is communicated with an output end of the cylinder water jacket 10, and the water pump 20 is used for inputting low-temperature cooling liquid into the cylinder water jacket 10;
the input end of the heat radiation module 30 is communicated with the output end of the cylinder water jacket 10, the output end of the heat radiation module 30 is communicated with the water pump 20, and the heat radiation module 30 is used for radiating high-temperature cooling liquid flowing out through the cylinder water jacket 10;
and an air supply module 40, wherein the air supply module 40 is respectively communicated with the input end of the cylinder water jacket 10 and the input end of the heat dissipation module 30, and the air supply module 40 is used for inputting air into the cylinder water jacket 10 and/or the heat dissipation module 30 to adjust the heat dissipation capacity of the cooling liquid.
It should be noted that, the cylinder water jacket 10 may be a heat exchange pipe wrapped or attached to the engine, and injecting the cooling liquid into the cylinder water jacket 10 through the water pump 20 may enable the cylinder water jacket 10 to exchange heat with the engine, so as to take away part of heat generated by the engine; when the engine is warmed up, the heat generated by the engine is slower, the cooling liquid does not dissipate heat through the heat dissipation module 30, and then flows back to the water pump 20 after flowing through the cylinder water jacket 10 from the water pump 20, so that a small circulation of the cooling liquid is formed, meanwhile, the air supply module 40 can introduce air into the cylinder water jacket 10, the amount of the introduced air is larger, the pressure is lower, the flow speed of the air is slower, part of the air is continuously and transiently attached to the surface of the engine water jacket to form an air film, heat transfer is weakened, so that the heat taken away from the engine by the cooling liquid is reduced, and the warming-up action of the engine is accelerated; when engine warms up and finishes, the coolant is dispelled the heat through the heat dissipation module 30, the coolant is firstly dispelled the heat through the heat dissipation module 30 after flowing through the cylinder water jacket 10 from the water pump 20, then flow back to the water pump 20, form the large circulation of coolant, simultaneously, the air supply module 40 can introduce air into the cylinder water jacket 10, and the flow of the air introduced into the cylinder water jacket 10 under this state is less, the pressure is great, make the coolant form the turbulence degree in the cylinder water jacket 10, and destroy the boundary layer, thereby play the function of increasing the heat transfer coefficient, in addition, when high temperature coolant is in entering the heat dissipation module 30, the air supply module 40 can also introduce air into the heat dissipation module 30, the air bubble entering the heat dissipation module 30 can move to the top of the heat dissipation module 30 under the effect of the buoyancy, the movement of the air bubble can increase the turbulence of the coolant, and can destroy the boundary layer of the coolant flow, increase the boundary layer and the mixing of non-boundary layer, thereby increasing the heat transfer quantity, and enhancing the heat dissipation effect.
Further, as a possible embodiment, referring to fig. 2, fig. 2 is a schematic diagram of a detailed structure of an embodiment of the gas-liquid hybrid cooling system according to the present invention, where different lines in fig. 2 correspond to different fluid states, and arrows represent fluid flow directions.
In this embodiment, the gas-liquid mixing cooling system further includes:
a first gas-liquid separator 51, wherein the first gas-liquid separator 51 is arranged between the output end of the cylinder water jacket 10 and the input end of the heat dissipation module 30, the input end of the first gas-liquid separator 51 is communicated with the output end of the cylinder water jacket 10, and the liquid output end of the first gas-liquid separator 51 is communicated with the input end of the heat dissipation module 30;
a second gas-liquid separator 52, wherein the second gas-liquid separator 52 is disposed between the output end of the cylinder water jacket 10 and the output end of the heat dissipation module 30 and the input end of the water pump 20, the input end of the second gas-liquid separator 52 is respectively communicated with the output end of the cylinder water jacket 10 and the output end of the heat dissipation module 30, and the liquid output end of the second gas-liquid separator 52 is communicated with the input end of the water pump 20;
a thermostat 60, the thermostat 60 being disposed at an output end of the cylinder water jacket 10, the thermostat 60 including a main valve and a sub valve, the main valve being in communication with an input end of the first gas-liquid separator 51, the sub valve being in communication with an input end of the second gas-liquid separator 52;
a pressure sensor 70, wherein the pressure sensor 70 is arranged at the input end of the cylinder water jacket 10, and the pressure sensor 70 is used for monitoring the injection pressure of the cooling liquid;
the pressure relief bypass valve 80 is disposed between the output end of the cylinder water jacket 10 and the input end of the first gas-liquid separator 51.
The first gas-liquid separator 51 is used for separating the gas-liquid mixture from the output end of the cylinder water jacket 10 in the small circulation of the coolant, and is used for separating the gas-liquid mixture from the output end of the heat radiation module 30 in the large circulation of the coolant, after the gas-liquid separation is completed, air is discharged into the atmosphere, and the coolant is stored in the first gas-liquid separator 51 or is output to the water pump 20, as can be seen from fig. 2, the coolant output by the first gas-liquid separator 51 is a low-temperature coolant; the second gas-liquid separator 52 is used for separating the gas-liquid mixture from the output end of the cylinder water jacket 10 in the large circulation of the cooling liquid, after the gas-liquid separation is completed, air is discharged into the atmosphere, the cooling liquid is output to the heat radiation module 30 for heat radiation, and the cooling liquid output by the second gas-liquid separator 52 is high-temperature cooling liquid;
the thermostat 60 can learn the operation condition of the engine and control the flow direction of the cooling liquid through the cooling liquid temperature of the output end of the cylinder water jacket 10, when the engine is warmed up, the cooling liquid of the output end of the cylinder water jacket 10 is low-temperature cooling liquid, at the moment, the main valve of the thermostat 60 is opened, the auxiliary valve is closed, the cooling liquid does not radiate heat through the heat radiation module 30, and small circulation is started; when the temperature of the cooling liquid at the output end of the cylinder water jacket 10 reaches a certain limit value, the engine warms up, the cooling liquid at the output end of the cylinder water jacket 10 is high-temperature cooling liquid, the main valve of the thermostat 60 is closed, the auxiliary valve is opened, the cooling liquid radiates heat through the heat radiation module 30, and the large circulation is started;
the pressure sensor 70 is arranged at the cooling liquid inlet of the engine, namely the input end of the cylinder water jacket 10, the pressure sensor 70 monitors the injection pressure of the cooling liquid by acquiring a pressure value, when the injection pressure of the cooling liquid is higher than a certain limit value, the excessive pressure in the cylinder water jacket 10 is indicated to influence the injection of the cooling liquid, at the moment, the pressure relief bypass valve 80 at the cooling liquid outlet, namely the output end of the cylinder water jacket 10 is opened, the redundant gas in the cooling liquid is discharged out of the engine, and meanwhile, the air supply module 40 stops injecting air into the cooling liquid so as to prevent the too little cooling liquid in the engine, thereby influencing the heat dissipation effect.
Further, as a possible embodiment, referring to fig. 3, fig. 3 is a schematic diagram of a detailed structure of an embodiment of the gas-liquid hybrid cooling system according to the present invention, where different lines in fig. 3 correspond to different fluid states, and arrows represent fluid flow directions.
In this embodiment, the heat dissipation module 30 includes:
a fan 31;
a radiator 32, wherein the radiator 32 is arranged on an air outlet duct of the fan 31, an input end of the radiator 32 is communicated with an output end of the cylinder water jacket 10, and an output end of the radiator 32 is communicated with the water pump 20;
a temperature sensor 33, wherein the temperature sensor 33 is disposed at an output end of the heat sink 32.
It should be noted that, the fan 31 is used for assisting the radiator 32 to radiate heat, and does not operate normally to reduce energy consumption; the radiator 32 is used for radiating the high-temperature coolant flowing in to obtain the low-temperature coolant when the coolant is largely circulated; the temperature sensor 33 is used for monitoring whether the temperature of the cooling liquid flowing out of the output end of the radiator 32 meets the standard of the low-temperature cooling liquid, if the temperature of the cooling liquid does not meet the standard, the cooling effect is poor, at the moment, a proper amount of air is injected into the radiator through the air supply module 40, so that air bubbles entering the radiator 32 move from the bottom of the radiator 32 to the top of the radiator 32 under the action of buoyancy, the movement of the air bubbles can increase the turbulence of the cooling liquid, the boundary layer of the cooling liquid flowing can be damaged, the mixing of the boundary layer and the non-boundary layer is increased, the heat transfer quantity is increased, and the cooling effect is enhanced; if the temperature of the mixed cooling liquid output by the radiator 32 detected by the temperature sensor 33 does not meet the low temperature standard after the air supply is started, the fan 31 is started to further assist in heat dissipation.
In this embodiment, the air supply module 40 includes:
an engine air supply unit 41, the engine air supply unit 41 being connected to the engine, the engine air supply unit 41 being configured to control an air intake amount of the engine;
a gas tank 42, an input end of the gas tank 42 communicates with an output end of the engine air supply unit 41, an output end of the gas tank 42 communicates with an input end of the cylinder water jacket 10 and an input end of the heat radiation module 30, respectively, the gas tank 42 is used for storing air from the intercooler 413;
a gas storage bypass valve 43, the gas storage bypass valve 43 being provided between an output end of the engine gas supply unit 41 and an input end of the gas tank 42;
a check valve 44, the check valve 44 communicating with an output end of the gas tank 42 and the engine air supply unit 41;
a first flow pressure controller 45, the first flow pressure controller 45 being disposed between an output end of the gas tank 42 and an input end of the cylinder water jacket 10;
a second flow pressure controller 46, the second flow pressure controller 46 being disposed between the output of the gas tank 42 and the input of the radiator 32.
Specifically, the engine air supply unit 41 includes:
an air filter 411, wherein the air filter 411 is used for filtering impurities in the air;
a supercharger 412, the supercharger 412 being connected to the engine, an input of the supercharger 412 being in communication with an output of the air filter 411, the supercharger 412 being for compressing air;
an intercooler 413, an input end of the intercooler 413 being in communication with an output end of the supercharger 412, the intercooler 413 being for cooling air;
a throttle valve 414, an input end of the throttle valve 414 is communicated with an output end of the intercooler 413, an output end of the throttle valve 414 is communicated with the engine, and the throttle valve 414 is used for controlling air inflow of the engine.
It should be noted that, in this embodiment, the engine may be a supercharged engine, air in the atmosphere enters the air filter 411 to be filtered, then enters the supercharger 412 and the intercooler 413 in sequence, most of the air enters the throttle valve 414 to support combustion, and the other part of the air enters the air tank 43 to be stored through the air storage bypass valve 42, and most of the air in the air tank 43 is derived from the pressure release air generated by the intercooler 413 during the deceleration of the automobile, and when the air in the air tank 43 is too much, the excessive air returns to the air filter 411 through the one-way valve 44 to be recycled; the first flow pressure controller 45 is for controlling the flow rate and the air pressure of the air introduced into the cylinder water jacket 10; the second flow pressure controller 46 is used to control the flow and pressure of the gas passing into the heat dissipating module 30 or the heat sink 32.
The embodiment provides a gas-liquid mixing cooling system, which overcomes the technical defect that the heat absorption capacity of the selected cooling liquid in the prior art cannot be adjusted according to the running working condition of an engine. The present embodiment adjusts the heat dissipation capacity of the engine by injecting clean air into the coolant, changing the heat transfer coefficient of the coolant. When the engine is warmed up, a certain amount of air is introduced to form a gas film on the surface of the cylinder water jacket, so that heat transfer is weakened, and heat taken away from the engine by cooling liquid is reduced. After the engine normally runs, a small amount of air is introduced, and bubbles generated by the air can aggravate the turbulence degree of the cooling liquid in the cylinder water jacket and destroy the boundary layer, so that the function of increasing the heat transfer coefficient is achieved. When the cooling liquid returns to the radiator, air bubbles can move from the bottom of the radiator to the top of the radiator under the action of buoyancy, the movement of the air bubbles can increase the turbulence of the cooling liquid and damage the flowing boundary layer of the cooling liquid, and the mixing of the boundary layer and the non-boundary layer is increased, so that the heat transfer quantity is increased, and the heat dissipation is enhanced.
Compared with the prior art, the embodiment can introduce clean air into the cooling liquid, so that the heat dissipation efficiency is adjusted on the premise of not changing the volume of the radiator and the cooling liquid; the heat dissipation capacity is adjusted according to the operation condition of the engine by controlling the air quantity of the cooling liquid; meanwhile, in the running process of the vehicle, a great part of pollutants emitted by the engine are generated in the warming-up process, and the embodiment can shorten the warming-up time and reduce the pollutant emission by reducing the heat dissipation capacity in the engine warming-up process; for a supercharged engine, the air decompressed by the intercooling recirculation valve can be directly used for mixing with cooling liquid, other energy is not consumed, heat dissipation energy consumption is reduced, and cost is saved.
The embodiment of the invention provides a control method of a gas-liquid mixed cooling system, and referring to fig. 4, fig. 4 is a schematic flow chart of an embodiment of the control method of the gas-liquid mixed cooling system.
In this embodiment, the control method of the gas-liquid hybrid cooling system includes:
step S10, acquiring the current operation condition of a vehicle engine;
step S20, determining a heat dissipation mode according to the current operation condition;
step S30, the flow direction of cooling liquid in the gas-liquid mixed cooling system is adjusted according to the heat dissipation mode;
and S40, adjusting the air flow injected into the cylinder water jacket and/or the heat dissipation module by the air supply module according to the heat dissipation mode so as to adjust the heat dissipation capacity of the cooling liquid.
It should be noted that, the execution main body of the embodiment is a controller in a vehicle, the controller may obtain the current operation condition of the vehicle engine through the temperature of the engine coolant outlet measured by the thermostat, so as to know whether the engine is in a warm-up stage or in a high-rotation-speed and high-torque operation condition, so as to determine whether the heat dissipation capacity of the coolant needs to be reduced or increased, and may correspondingly reduce the heat dissipation mode and increase the heat dissipation mode respectively, then adjust the flow direction of the coolant by changing the opening and closing states of the valve in the thermostat, so as to determine whether the coolant performs small-cycle heat exchange or large-cycle heat exchange, and simultaneously adjust the air flow and the pressure injected into the cylinder water jacket and/or the heat dissipation module by controlling the flow pressure sensor to adjust the heat dissipation capacity of the coolant, and may further control the pressure relief bypass valve to discharge the redundant gas in the cylinder water jacket of the engine, control the one-way valve to discharge the redundant gas in the air tank, control the fan to assist the radiator to perform heat dissipation, and the like.
The embodiment provides a control method of a gas-liquid mixed cooling system, which overcomes the technical defect that the heat absorption capacity of the selected cooling liquid in the prior art cannot be adjusted according to the operation condition of an engine. The present embodiment adjusts the heat dissipation capacity of the engine by injecting clean air into the coolant, changing the heat transfer coefficient of the coolant. When the engine is warmed up, a certain amount of air is introduced to form a gas film on the surface of the cylinder water jacket, so that heat transfer is weakened, and heat taken away from the engine by cooling liquid is reduced. After the engine normally runs, a small amount of air is introduced, and bubbles generated by the air can aggravate the turbulence degree of the cooling liquid in the cylinder water jacket and destroy the boundary layer, so that the function of increasing the heat transfer coefficient is achieved. When the cooling liquid returns to the radiator, air bubbles can move from the bottom of the radiator to the top of the radiator under the action of buoyancy, the movement of the air bubbles can increase the turbulence of the cooling liquid and damage the flowing boundary layer of the cooling liquid, and the mixing of the boundary layer and the non-boundary layer is increased, so that the heat transfer quantity is increased, and the heat dissipation is enhanced.
Compared with the prior art, the embodiment can realize the adjustment of the heat dissipation efficiency on the premise of not changing the volume of the radiator and the cooling liquid based on the fact that clean air is introduced into the cooling liquid by the gas-liquid mixed cooling system; the heat dissipation capacity is adjusted according to the operation condition of the engine by controlling the air quantity of the cooling liquid; meanwhile, in the running process of the vehicle, a great part of pollutants emitted by the engine are generated in the warming-up process, and the embodiment can shorten the warming-up time and reduce the pollutant emission by reducing the heat dissipation capacity in the engine warming-up process; for a supercharged engine, the air decompressed by the intercooling recirculation valve can be directly used for mixing with cooling liquid, other energy is not consumed, heat dissipation energy consumption is reduced, and cost is saved.
In addition, the embodiment of the invention also provides a vehicle, which comprises an engine and the gas-liquid mixed cooling system applied to the engine, and referring to fig. 5, fig. 5 is a schematic structural diagram of the vehicle according to the embodiment of the invention.
As shown in fig. 5, the vehicle may further include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Those skilled in the art will appreciate that the configuration shown in fig. 5 is not limiting of the vehicle and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 5, an operating system, a data storage module, a network communication module, a user interface module, and a hybrid cooling control program may be included in the memory 1005 as one type of storage medium.
In the vehicle illustrated in fig. 5, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with a user; the processor 1001, the memory 1005 in the present embodiment may be provided in a vehicle that calls a hybrid cooling control program stored in the memory 1005 by the processor 1001 and performs the following operations:
acquiring the current running condition of a vehicle engine;
determining a heat dissipation mode according to the current operation condition;
adjusting the flow direction of cooling liquid in the gas-liquid mixed cooling system according to the heat radiation mode;
and adjusting the air flow injected into the cylinder water jacket and/or the heat dissipation module by the air supply module according to the heat dissipation mode so as to adjust the heat dissipation capacity of the cooling liquid.
In addition, the embodiment of the invention also provides a computer readable storage medium, which is applied to a computer, and the computer readable storage medium can be a nonvolatile computer readable storage medium, and a hybrid cooling control program is stored on the computer readable storage medium, and when the hybrid cooling control program is executed by a processor, the steps of the control method of the gas-liquid hybrid cooling system of the invention are realized.
Embodiments of the vehicle and the computer readable storage medium of the present invention may refer to embodiments of a control method of a gas-liquid hybrid cooling system of the present invention, and are not described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (9)
1. A gas-liquid hybrid cooling system, characterized in that the gas-liquid hybrid cooling system is applied to an engine, the gas-liquid hybrid cooling system comprising:
the cylinder water jacket is used for exchanging heat for the engine;
the output end of the water pump is communicated with the input end of the cylinder water jacket, the input end of the water pump is communicated with the output end of the cylinder water jacket, and the water pump is used for inputting low-temperature cooling liquid into the cylinder water jacket;
the heat dissipation module comprises a radiator, the input end of the radiator is communicated with the output end of the cylinder water jacket, the output end of the radiator is communicated with the water pump, and the heat dissipation module is used for dissipating heat of high-temperature cooling liquid flowing out through the cylinder water jacket;
a gas supply module, the gas supply module comprising: the engine air supply unit is connected with the engine and is used for controlling the air inflow of the engine; the input end of the air tank is communicated with the output end of the engine air supply unit, the output end of the air tank is respectively communicated with the input end of the air cylinder water jacket and the input end of the heat radiation module, and the air tank is used for storing air; the gas storage bypass valve is arranged between the output end of the engine gas supply unit and the input end of the gas tank; the check valve is communicated with the output end of the gas tank and the engine gas supply unit; a first flow pressure controller disposed between an output end of the gas tank and an input end of the cylinder water jacket; a second flow pressure controller disposed between an output of the gas tank and an input of the radiator; the air supply module is used for inputting air into the cylinder water jacket and/or the heat dissipation module according to a heat dissipation mode so as to adjust the heat dissipation capacity of the cooling liquid.
2. The gas-liquid hybrid cooling system according to claim 1, further comprising:
the first gas-liquid separator is arranged between the output end of the cylinder water jacket and the input end of the heat radiation module, the input end of the first gas-liquid separator is communicated with the output end of the cylinder water jacket, and the liquid output end of the first gas-liquid separator is communicated with the input end of the heat radiation module;
the second gas-liquid separator is arranged between the output end of the cylinder water jacket and the output end of the heat dissipation module and the input end of the water pump, the input end of the second gas-liquid separator is respectively communicated with the output end of the cylinder water jacket and the output end of the heat dissipation module, and the liquid output end of the second gas-liquid separator is communicated with the input end of the water pump.
3. The gas-liquid hybrid cooling system according to claim 2, further comprising:
the thermostat is arranged at the output end of the cylinder water jacket and comprises a main valve and an auxiliary valve, the main valve is communicated with the input end of the first gas-liquid separator, and the auxiliary valve is communicated with the input end of the second gas-liquid separator.
4. The gas-liquid hybrid cooling system according to claim 2, further comprising:
the pressure sensor is arranged at the input end of the cylinder water jacket and is used for monitoring the injection pressure of the cooling liquid;
the pressure relief bypass valve is arranged between the output end of the cylinder water jacket and the input end of the first gas-liquid separator.
5. The gas-liquid hybrid cooling system of claim 1, wherein the heat dissipation module comprises:
the air outlet duct of the fan is provided with the radiator;
and the temperature sensor is arranged at the output end of the radiator.
6. The gas-liquid hybrid cooling system according to claim 1, wherein the engine air supply unit includes:
an air filter for filtering impurities in the air;
the supercharger is connected with the engine, the input end of the supercharger is communicated with the output end of the air filter, and the supercharger is used for compressing air;
the input end of the intercooler is communicated with the output end of the supercharger, and the intercooler is used for cooling air;
the input end of the throttle valve is communicated with the output end of the intercooler, the output end of the throttle valve is communicated with the engine, and the throttle valve is used for controlling the air inflow of the engine.
7. A control method of a gas-liquid hybrid cooling system, characterized in that the control method of a gas-liquid hybrid cooling system is applied to the gas-liquid hybrid cooling system according to any one of claims 1 to 6, the control method of a gas-liquid hybrid cooling system comprising the steps of:
acquiring the current running condition of a vehicle engine;
determining a heat dissipation mode according to the current operation condition;
adjusting the flow direction of cooling liquid in the gas-liquid mixed cooling system according to the heat radiation mode;
and adjusting the air flow injected into the cylinder water jacket and/or the heat dissipation module by the air supply module according to the heat dissipation mode so as to adjust the heat dissipation capacity of the cooling liquid.
8. A vehicle, characterized in that the vehicle comprises: a memory, a processor, and a hybrid cooling control program stored on the memory and operable on the processor, which when executed by the processor, implements the steps of the control method of a gas-liquid hybrid cooling system according to claim 7.
9. A computer-readable storage medium, wherein a hybrid cooling control program is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the control method of the gas-liquid hybrid cooling system according to claim 7.
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| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN112267937A (en) * | 2020-09-18 | 2021-01-26 | 浙江海洋大学 | Heat dissipation device for ship turbine structure |
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| US4545335A (en) * | 1983-05-19 | 1985-10-08 | Nissan Motor Co., Ltd. | Cooling system for automotive engine or the like |
| JPH029910A (en) * | 1988-04-30 | 1990-01-12 | Mazda Motor Corp | Cooling device for engine |
| JPH051540A (en) * | 1991-06-27 | 1993-01-08 | Nissan Motor Co Ltd | Cooling system for internal combustion engine |
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| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
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