CN111098665B - Internal combustion engine automobile multi-mode temperature management system - Google Patents
Internal combustion engine automobile multi-mode temperature management system Download PDFInfo
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- CN111098665B CN111098665B CN202010061649.XA CN202010061649A CN111098665B CN 111098665 B CN111098665 B CN 111098665B CN 202010061649 A CN202010061649 A CN 202010061649A CN 111098665 B CN111098665 B CN 111098665B
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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
- B60H1/00314—Arrangements permitting a rapid heating of the heating liquid
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
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- 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
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a multi-mode temperature management system of an internal combustion engine automobile, which comprises an air conditioning system and an internal combustion engine temperature management system, wherein the air conditioning system can independently heat and refrigerate a carriage, and the internal combustion engine temperature management system can independently heat and refrigerate an internal combustion engine. The multi-mode temperature management system of the internal combustion engine automobile controls the communication and the isolation of the air conditioning system and the internal combustion engine temperature management system through pipelines. The internal combustion engine automobile multi-mode temperature management system dynamically switches the internal combustion engine temperature management mode according to the real-time temperature of the internal combustion engine, so that the heat dissipation efficiency is higher, the warming-up speed is higher, and the temperature management is more flexible.
Description
Technical Field
The invention relates to the technical field of thermal management of internal combustion engine automobiles, in particular to a multi-mode temperature management system of an internal combustion engine automobile.
Background
The existing internal combustion engine automobile temperature management has the following technical problems:
(1) the existing internal combustion engine automobile only cools the internal combustion engine through the water tank radiator, so that the cooling efficiency is low and the influence of the environment is large. Under the condition of harsh operating environment, such as large compression ratio of the internal combustion engine, large vehicle load, high ambient temperature and the like, the phenomena of overheating of the internal combustion engine, boiling of a heat dissipation water tank and the like are easy to occur;
(2) when the existing internal combustion engine automobile is started in an extremely low temperature environment, the problems of serious piston abrasion, even piston connecting rod fracture and the like are easy to occur. Therefore, the normal operation of the vehicle can be ensured by controlling the small circulation of the cooling liquid and idling the warm-up for a period of time;
(3) the existing internal combustion engine automobile air conditioning system only refrigerates a carriage and is not combined with the cooling function of an internal combustion engine;
(4) the working modes of the existing internal combustion engine cooling system only comprise two modes of small-circulation coolant warming and water tank heat dissipation, and an appropriate temperature management mode is difficult to select according to the temperature of the internal combustion engine.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a multi-mode temperature management system for an internal combustion engine automobile. The technical scheme of the invention is as follows.
The internal combustion engine automobile multi-mode temperature management system comprises an air conditioning system and an internal combustion engine temperature management system, wherein the air conditioning system can independently heat and cool a compartment, and the internal combustion engine temperature management system can independently heat and cool an internal combustion engine;
the air conditioning system is connected with the internal combustion engine temperature management system through a pipeline and a valve, the valve comprises an internal combustion engine temperature management system evaporator three-way valve, the internal combustion engine temperature management system evaporator three-way valve enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be communicated so as to achieve heat exchange between the air conditioning system and the internal combustion engine temperature management system, and enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be cut off so as to prevent heat exchange between the air conditioning system and the internal combustion engine temperature management system;
the multi-mode temperature management system of the internal combustion engine automobile dynamically switches the temperature management mode of the internal combustion engine according to the real-time temperature of the internal combustion engine.
Preferably, the air conditioning system includes a compressor, a condenser, a cooling fan, a cabin expansion valve, a cabin evaporator, a cabin heater three-way valve, a blower, an internal combustion engine temperature management system expansion valve, and an internal combustion engine temperature management system evaporator;
the expansion valve of the internal combustion engine temperature management system and the evaporator of the internal combustion engine temperature management system are used for cooling the cooling liquid in the internal combustion engine temperature management system.
Preferably, the multimode temperature management system of the internal combustion engine automobile dynamically switches a warm-up mode according to the real-time temperature of the internal combustion engine, heats the cooling liquid through the PTC heater to achieve warm-up, and/or achieves warm-up through small circulation of the cooling liquid. Preferably, the internal combustion engine automobile multi-mode temperature management system dynamically switches the cooling mode according to the real-time temperature of the internal combustion engine, and the cooling is carried out through a water tank radiator and/or an internal combustion engine temperature management system evaporator.
Preferably, the internal combustion engine temperature management system further includes a tank radiator three-way valve that can allow and prevent the coolant in the internal combustion engine temperature management system from flowing through a tank radiator.
Preferably, the multimode temperature management system for the internal combustion engine automobile dynamically switches the warming-up mode according to the real-time temperature of the internal combustion engine, and comprises the following steps:
when the real-time temperature T of the internal combustion engine0< first predetermined temperature T1The PTC heater starts to work to heat the cooling liquid, so that the temperature of the internal combustion engine is increased at a first temperature increasing rate;
when the first preset temperature T1Real-time temperature T less than or equal to that of internal combustion engine0< second predetermined temperature T2When the temperature of the internal combustion engine rises, the three-way valve of the water tank radiator prevents the cooling liquid of the internal combustion engine from flowing through the water tank radiator, so that the internal combustion engine is heated at a second heating rate; wherein the second ramp rate is lower than the first ramp rate.
Preferably, the multimode temperature management system of the internal combustion engine automobile dynamically switches the cooling mode according to the real-time temperature of the internal combustion engine, and comprises the following steps:
when the third preset temperature T3Real-time temperature T less than or equal to that of internal combustion engine0< fourth preset temperature T4When the cooling device is used, the internal combustion engine cooling liquid is controlled to pass through the water tank radiator three-way valve, and is cooled through the water tank radiator and the cooling fan, so that the internal combustion engine is cooled at a first cooling rate;
when the fourth preset temperature T4Real-time temperature T less than or equal to that of internal combustion engine0The temperature can be reduced by the internal combustion engine temperature management system evaporator only through the radiator of the water tank which is not enough to effectively reduce the temperatureThe three-way valve controls the internal combustion engine cooling liquid to pass through the internal combustion engine temperature management system evaporator, so that the internal combustion engine is cooled at a second cooling rate; wherein the second cooling rate is higher than the first cooling rate.
Preferably, the connection mode of the radiator three-way valve and the evaporator three-way valve of the internal combustion engine temperature management system is as follows:
the first end of the water tank radiator three-way valve is connected with one end of the water tank radiator, the second end of the water tank radiator three-way valve is connected with the other end of the water tank radiator, and the third end of the water tank radiator three-way valve is connected with the internal combustion engine;
the first end of the internal combustion engine temperature management system evaporator three-way valve is connected with the internal combustion engine temperature management system evaporator, the second end of the internal combustion engine temperature management system evaporator three-way valve is connected with the PTC heater, and the third end of the internal combustion engine temperature management system evaporator three-way valve is connected with the water tank radiator.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) the air-conditioning system is utilized to cooperatively cool the internal combustion engine, so that the heat dissipation is more reliable and efficient.
The invention can radiate the internal combustion engine by means of the air conditioning system, and can realize high-efficiency radiation even under the working conditions of large compression ratio of the internal combustion engine, large vehicle load and high ambient temperature; because the air conditioning system uses the phase-change refrigeration principle to cool, compared with the traditional air cooling/water cooling heat dissipation mode, the phase-change refrigeration absorbs more heat and has higher cooling efficiency in the same temperature variation range.
(2) The PTC heater is used for preheating the internal combustion engine, and the warming-up speed of the internal combustion engine is improved.
The internal combustion engine is preheated by the PTC heater, and even if the internal combustion engine is started under the condition of extremely low ambient temperature, the internal combustion engine can be ensured to be quickly heated, the abrasion of the piston is reduced, and the warming-up time is shortened. As the PTC heater is a thermistor with positive temperature coefficient, the resistance rises along with the rise of the temperature, the current gradually becomes smaller, and the heat productivity of the PTC heater automatically becomes smaller. Therefore, the PTC heater is safer and more energy-saving.
(3) The temperature management mode is dynamically adjusted according to the temperature of the internal combustion engine, so that the temperature management is more flexible and stable.
The invention dynamically adjusts the cooling liquid circulation pipeline through 3 three-way valves according to the temperature change of the internal combustion engine, and flexibly selects a plurality of modes such as PTC heater heating warming, cooling liquid small circulation warming, water tank radiator cooling, internal combustion engine temperature management system evaporator cooling and the like to control the temperature of the internal combustion engine.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram of the multi-mode temperature management system of an internal combustion engine automobile.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the multimode temperature management system for an internal combustion engine automobile of the present embodiment includes an air conditioning system that can independently heat and cool a vehicle cabin, and an internal combustion engine temperature management system that can independently heat and cool an internal combustion engine.
The air conditioning system comprises a compressor 1, a condenser 2, a cooling fan 3, a compartment expansion valve 4, a compartment evaporator 5, a compartment heater 6, a compartment heater three-way valve 7, an air blower 8, an internal combustion engine temperature management system expansion valve 9 and an internal combustion engine temperature management system evaporator 10.
A conventional automotive air conditioning refrigeration system generally consists of four major components: compressor, condenser, expansion valve and evaporator. The compressor compresses a gaseous refrigerant into high-temperature and high-pressure gas, the condenser cools the high-temperature and high-pressure refrigerant into medium-temperature and high-pressure liquid, the expansion valve converts the medium-temperature and high-pressure liquid refrigerant into low-temperature and low-pressure mist refrigerant, and finally the low-temperature and low-pressure mist refrigerant is evaporated in the evaporator to absorb heat to realize air conditioner refrigeration. Generally, a traditional automotive air conditioning and refrigeration system only aims at refrigerating a compartment;
unlike the conventional air conditioning and refrigerating system for a vehicle, the air conditioning and refrigerating system of the present embodiment includes two expansion valves, a cabin expansion valve 4, an internal combustion engine temperature management system expansion valve 9, two evaporators, a cabin evaporator 5, and an internal combustion engine temperature management system evaporator 10. Wherein, the compartment expansion valve 4 and the compartment evaporator 5 are used for refrigerating the compartment, and the internal combustion engine temperature management system expansion valve 9 and the internal combustion engine temperature management system evaporator 10 are used for cooling the cooling liquid in the internal combustion engine temperature management system.
The engine temperature management system includes an internal combustion engine 12, a radiator 13, and a PTC heater 15. Also included is an engine temperature management system evaporator three-way valve 11 for controlling whether engine coolant passes through the engine temperature management system evaporator 10, and a radiator three-way valve 14 for controlling whether engine coolant passes through a radiator 13.
The air conditioning system is connected with the internal combustion engine temperature management system through a pipeline and a valve, the valve comprises an internal combustion engine temperature management system evaporator three-way valve 11, the internal combustion engine temperature management system evaporator three-way valve 11 enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be communicated so as to achieve heat exchange between the air conditioning system and the internal combustion engine temperature management system, and enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be cut off so as to prevent heat exchange between the air conditioning system and the internal combustion engine temperature management system;
the internal combustion engine automobile multi-mode temperature management system dynamically switches the internal combustion engine temperature management mode according to the real-time temperature of the internal combustion engine 12.
As a preferred embodiment, the air conditioning system and the internal combustion engine temperature management system are coupled with a valve through a pipeline, wherein a first end of a water tank radiator three-way valve 14 is connected with one end of a water tank radiator 13, a second end of the water tank radiator three-way valve 14 is connected with the other end of the water tank radiator 13, and a third end of the water tank radiator three-way valve 14 is connected with the internal combustion engine 12;
a first end of an internal combustion engine temperature management system evaporator three-way valve 11 is connected with an internal combustion engine temperature management system evaporator 10, a second end of the internal combustion engine temperature management system evaporator three-way valve 11 is connected with a PTC heater 15, and a third end of the internal combustion engine temperature management system evaporator three-way valve 11 is connected with a water tank radiator 13.
In a preferred embodiment, the multimode temperature management system for an internal combustion engine automobile dynamically switches a warm-up mode according to the real-time temperature of the internal combustion engine 12, and comprises the following steps:
when the real-time temperature T of the internal combustion engine 120< first predetermined temperature T1The PTC heater 15 starts to operate to heat the coolant, so that the internal combustion engine 12 is heated at a first heating rate;
when the first preset temperature T1Real-time temperature T of internal combustion engine 12 is less than or equal to0< second predetermined temperature T2At this time, the radiator three-way valve 14 prevents the engine coolant from flowing through the radiator 13, and the temperature of the internal combustion engine 12 is raised at the second temperature-raising rate. Wherein the second ramp rate is lower than the first ramp rate.
In a preferred embodiment, the multimode temperature management system for an internal combustion engine automobile dynamically switches the cooling mode according to the real-time temperature of the internal combustion engine 12, and comprises the following steps:
when the third preset temperature T3Real-time temperature T of internal combustion engine 12 is less than or equal to0< fourth preset temperature T4When the temperature of the internal combustion engine 12 is reduced at a first temperature reduction rate, the internal combustion engine cooling liquid is controlled to pass through the water tank radiator 13 through the water tank radiator three-way valve 14, and the internal combustion engine is cooled through the water tank radiator 13 and the cooling fan 3;
when the fourth preset temperature T4Real-time temperature T of internal combustion engine 12 is less than or equal to0And controlling the internal combustion engine cooling liquid to pass through the internal combustion engine temperature management system evaporator 10 by the internal combustion engine temperature management system evaporator three-way valve 11, so that the internal combustion engine 12 is cooled at a second cooling rate. Wherein the second cooling rate is higher than the first cooling rate.
For example, let T be the real-time temperature of the internal combustion engine 120The temperature management modes in different real-time temperature ranges are as follows:
the engine temperature management system cooling and heating modes are as follows:
(1) realization of warm-up function of internal combustion engine
The warm-up function can be realized by two modes:
is heated by PTC heater 15
When the temperature of the internal combustion engine 12 is too low (T)0＜T1) And the PTC heater 15 is controlled to work to heat the cooling liquid of the internal combustion engine. Since the PTC heater 15 is a thermistor having a positive temperature coefficient, the resistance increases with an increase in temperature, the current gradually decreases, and the heat generation amount of the PTC automatically decreases. Therefore, the use of the PTC heater can not only improve the warming-up efficiency, but also save more energy safely.
② small circulation warming-up by cooling liquid
When the temperature of the internal combustion engine 12 is slightly lower than the normal temperature range (T)1≤T0＜T2) The internal combustion engine coolant is prevented from flowing through the radiator 13 by the radiator three-way valve 14, so that the heat loss of the internal combustion engine 12 is avoided, and the internal combustion engine 12 is rapidly heated.
(2) Realization of cooling function of internal combustion engine
The cooling function can be achieved in two modes:
is cooled by a radiator 13
When the temperature of the internal combustion engine 12 is slightly higher than the normal temperature range (T)3≤T0＜T4) The engine coolant is controlled by the radiator three-way valve 14 to pass through the radiator 13, and is cooled by the radiator 13 and the cooling fan 3.
② cooling by the internal combustion engine temperature management system evaporator 10
When the temperature of the internal combustion engine 12 is too high (T)4≤T0) The engine coolant can be controlled to pass through the engine temperature management system evaporator 10 by the engine temperature management system evaporator three-way valve 11, and the temperature can be rapidly reduced by the air conditioning system.
In the embodiments provided in the present application, it is only illustrative, for example, the division of the units is only one division of logic functions, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
The above-mentioned embodiments are only used for understanding the technical solutions of the present invention, and should not be construed as limiting the scope of the present invention. It should be noted that variations to those skilled in the art may be made without departing from the spirit of the invention, and these are within the scope of the invention.
Claims (2)
1. A multi-mode temperature management system of an internal combustion engine automobile comprises an air conditioning system and an internal combustion engine temperature management system, wherein the air conditioning system can independently heat and cool a compartment, and the internal combustion engine temperature management system can independently heat and cool an internal combustion engine,
the air conditioning system is connected with the internal combustion engine temperature management system through a pipeline and a valve, the valve comprises an internal combustion engine temperature management system evaporator three-way valve (11), the internal combustion engine temperature management system evaporator three-way valve (11) enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be communicated so as to achieve heat exchange between the air conditioning system and the internal combustion engine temperature management system, and enables the pipeline between the air conditioning system and the internal combustion engine temperature management system to be cut off so as to prevent heat exchange between the air conditioning system and the internal combustion engine temperature management system;
the internal combustion engine automobile multi-mode temperature management system dynamically switches the internal combustion engine temperature management mode according to the real-time temperature of the internal combustion engine (12); the internal combustion engine automobile multi-mode temperature management system dynamically switches cooling modes according to the real-time temperature of the internal combustion engine (12);
the air conditioning system comprises a compressor (1), a condenser (2), a cooling fan (3), a compartment expansion valve (4), a compartment evaporator (5), a compartment heater (6), a compartment heater three-way valve (7), a blower (8), an internal combustion engine temperature management system expansion valve (9) and an internal combustion engine temperature management system evaporator (10);
the vehicle cabin expansion valve (4) and the vehicle cabin evaporator (5) are used for refrigerating a vehicle cabin, and the internal combustion engine temperature management system expansion valve (9) and the internal combustion engine temperature management system evaporator (10) are used for cooling a cooling liquid in the internal combustion engine temperature management system; the compartment evaporator (5) is connected in parallel with the internal combustion engine temperature management system evaporator (10);
the multi-mode temperature management system of the internal combustion engine automobile dynamically switches a warming-up mode according to the real-time temperature of the internal combustion engine (12), and realizes warming-up by heating coolant through a PTC heater (15) and/or realizes warming-up by small circulation of the coolant;
the internal combustion engine automobile multi-mode temperature management system dynamically switches cooling modes according to the real-time temperature of the internal combustion engine (12), and the internal combustion engine automobile multi-mode temperature management system is cooled by a water tank radiator (13) and/or an internal combustion engine temperature management system evaporator (10);
the engine temperature management system further comprises a tank radiator three-way valve (14), the tank radiator three-way valve (14) being capable of allowing and preventing coolant within the engine temperature management system to flow through a tank radiator (13);
the multimode temperature management system for the internal combustion engine automobile dynamically switches the warming-up mode according to the real-time temperature of the internal combustion engine (12), and comprises the following steps:
when the real-time temperature T0 of the internal combustion engine (12) is less than a first preset temperature T1, the PTC heater (15) starts to work to heat the cooling liquid, and the internal combustion engine (12) is heated at a first heating rate;
when the first preset temperature T1 is not more than the real-time temperature T0 of the internal combustion engine (12) and is less than the second preset temperature T2, the water tank radiator three-way valve (14) prevents the internal combustion engine cooling liquid from flowing through the water tank radiator (13), and the internal combustion engine (12) is heated at a second heating rate; wherein the second ramp rate is lower than the first ramp rate;
the multimode temperature management system of the internal combustion engine automobile dynamically switches cooling modes according to the real-time temperature of the internal combustion engine (12), and comprises the following steps:
when the third preset temperature T3 is not more than the real-time temperature T0 of the internal combustion engine (12) and is less than the fourth preset temperature T4, controlling the internal combustion engine cooling liquid to pass through a water tank radiator (13) through a water tank radiator three-way valve (14), and cooling the internal combustion engine (12) at a first cooling rate through the water tank radiator (13) and a cooling fan (3);
when the fourth preset temperature T4 is less than or equal to the real-time temperature T0 of the internal combustion engine (12), the temperature is not reduced effectively only through the water tank radiator (13), the internal combustion engine cooling liquid is controlled to pass through the internal combustion engine temperature management system evaporator (10) through the internal combustion engine temperature management system evaporator three-way valve (11), and the internal combustion engine (12) is cooled at a second cooling rate; wherein the second cooling rate is higher than the first cooling rate.
2. The multimode temperature management system of an internal combustion engine automobile according to claim 1, characterized in that the radiator three-way valve (14) and the internal combustion engine temperature management system evaporator three-way valve (11) are connected in the following way:
the first end of the water tank radiator three-way valve (14) is connected with one end of a water tank radiator (13), the second end of the water tank radiator three-way valve (14) is connected with the other end of the water tank radiator (13), and the third end of the water tank radiator three-way valve (14) is connected with the internal combustion engine (12);
the first end of an internal combustion engine temperature management system evaporator three-way valve (11) is connected with an internal combustion engine temperature management system evaporator (10), the second end of the internal combustion engine temperature management system evaporator three-way valve (11) is connected with a PTC heater (15), and the third end of the internal combustion engine temperature management system evaporator three-way valve (11) is connected with a water tank radiator (13).
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