CN115450745A - Vehicle and control method, device, control equipment and medium for engine water temperature of vehicle - Google Patents

Vehicle and control method, device, control equipment and medium for engine water temperature of vehicle Download PDF

Info

Publication number
CN115450745A
CN115450745A CN202210617744.2A CN202210617744A CN115450745A CN 115450745 A CN115450745 A CN 115450745A CN 202210617744 A CN202210617744 A CN 202210617744A CN 115450745 A CN115450745 A CN 115450745A
Authority
CN
China
Prior art keywords
engine
water
water temperature
vehicle
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210617744.2A
Other languages
Chinese (zh)
Other versions
CN115450745B (en
Inventor
张艳海
栾凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Co Wheels Technology Co Ltd
Original Assignee
Beijing Co Wheels Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Co Wheels Technology Co Ltd filed Critical Beijing Co Wheels Technology Co Ltd
Priority to CN202210617744.2A priority Critical patent/CN115450745B/en
Publication of CN115450745A publication Critical patent/CN115450745A/en
Application granted granted Critical
Publication of CN115450745B publication Critical patent/CN115450745B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • 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
    • F01P2007/168—By varying the cooling capacity of a liquid-to-air heat-exchanger

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention provides a vehicle and a control method, a control device and a medium for the water temperature of an engine of the vehicle, wherein the method comprises the following steps: the water temperature of the engine is obtained after the vehicle is powered off and the engine is flamed out, whether the water temperature is larger than the set water temperature or not is judged, and when the water temperature is larger than the set water temperature, the water circulation system of the engine is controlled to operate, so that the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, the reliability of the engine can be ensured, and the service life of the engine is prolonged.

Description

Vehicle and control method, device, control equipment and medium for engine water temperature of vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle and a method, a device and a medium for controlling water temperature of an engine of the vehicle.
Background
For vehicles, the engine thermal management system controls the engine to be kept at an optimal temperature (for example, 90 ℃) during a working cycle, so that the engine can be operated at the optimal temperature to be most fuel-saving, most stable and most effective.
However, in a high temperature environment, if the engine is in a high power output condition for a long time (e.g., the vehicle is in a low power climbing process for a long time), the water temperature of the engine may be at a higher temperature. At this time, if the vehicle is powered off and the engine is turned off, the water temperature of the engine may continue to rise due to heat radiation from the exhaust pipe, which may affect the reliability of the engine and shorten the service life of the engine.
Disclosure of Invention
The present invention is directed to solving, to some extent, the technical problems in the related art.
Therefore, a first object of the present invention is to provide a method for controlling water temperature of an engine of a vehicle, which obtains water temperature of the engine in response to power-off of the vehicle and after the engine is turned off, and controls a water circulation system of the engine to operate when the water temperature is greater than a set water temperature, so as to ensure that the water temperature of the engine rapidly drops after the power-off of the vehicle and the engine is turned off, thereby ensuring reliability of the engine and prolonging service life of the engine.
A second object of the present invention is to provide a control device for a vehicle engine water temperature.
A third object of the invention is to propose a vehicle control apparatus.
A fourth object of the invention is to propose a vehicle.
A fifth object of the present invention is to provide a computer-readable storage medium
A sixth object of the invention is to propose a computer program product.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for controlling water temperature of an engine of a vehicle, the method including the steps of: responding to the power-off of a vehicle and after an engine is shut down, and acquiring the water temperature of the engine; judging whether the water temperature is greater than a set water temperature or not; and when the water temperature is greater than the set water temperature, controlling a water circulation system of the engine to operate.
According to the control method of the water temperature of the vehicle-mounted engine, the water temperature of the engine is obtained in response to the power-off of the vehicle and after the engine is flamed out, whether the water temperature is larger than the set water temperature or not is judged, and when the water temperature is larger than the set water temperature, the water circulation system of the engine is controlled to operate, so that the water temperature of the engine can be ensured to be rapidly reduced after the power-off of the vehicle and the flameout of the engine, the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
In addition, the control method of the vehicle engine water temperature according to the embodiment of the first aspect of the invention may further have the following additional technical features:
according to an embodiment of the present invention, the water circulation system of the engine includes: a first heat exchanger and a fan; the first end of the cooling water path of the engine is connected with the first end of the first heat exchanger, the second end of the first heat exchanger is connected with the second end of the cooling water path of the engine, and the fan is arranged close to the first heat exchanger; wherein the controlling operation of the water circulation system of the engine includes: and controlling the first heat exchanger to cool a cooling water path of the engine, and cooling the first heat exchanger through the fan.
According to one embodiment of the invention, the vehicle further comprises a water circulation system of an air conditioner; wherein, the water circulating system of air conditioner includes: the switching valve, the water pump and the second heat exchanger; a first water outlet of the switching valve is connected with a third end of a cooling water path of the engine, a second water outlet of the switching valve is respectively connected with a fourth end of the cooling water path of the engine and a first end of the water pump, a second end of the water pump is connected with a first end of the second heat exchanger, and a second end of the second heat exchanger is connected with a water inlet of the switching valve; wherein the controlling operation of the water circulation system of the engine includes: and controlling the switching valve to be connected with a second water outlet of the switching valve from the switched water inlet, switching to the switched water inlet to be connected with a first water outlet of the switching valve, and controlling the water pump to be opened so as to enable the water circulation of the engine and the water circulation system of the air conditioner to be communicated and control the fan to work.
Determining the working time and power of the fan and/or determining the opening degree of the water pump according to the water temperature of the engine and the target water temperature; wherein the working time is less than or equal to a set time; and controlling the fan according to the working time and power of the fan, and/or controlling the water pump according to the opening degree of the water pump.
Wherein the working time and the power of the fan are in positive correlation with the water temperature of the engine; the opening degree of the water pump and the water temperature of the engine are in positive correlation.
According to an embodiment of the present invention, the controlling the operation of the water circulation system of the engine when the water temperature is greater than the set water temperature includes: acquiring the temperature difference between the water temperature and the set water temperature; judging whether the temperature difference is larger than a set temperature difference or not; and when the temperature difference is greater than the set temperature difference, controlling a water circulation system of the air conditioner and a water circulation system of the engine to be synchronous.
In order to achieve the above object, a second aspect of the present invention provides a control apparatus for a vehicle engine water temperature, the apparatus including: the acquisition module is used for acquiring the water temperature of the engine after the vehicle is powered off and the engine is shut down; the judging module is used for judging whether the water temperature is greater than the set water temperature; and the control module is used for controlling the water circulation system of the engine to operate when the water temperature is greater than the set water temperature.
According to the control device for the water temperature of the vehicle engine, after the vehicle is powered off and the engine is flamed out, the water temperature of the engine is obtained through the obtaining module, whether the water temperature is larger than the set water temperature or not is judged through the judging module, and when the water temperature is larger than the set water temperature, the water circulating system of the engine is controlled to operate through the control module, so that the water temperature of the engine can be guaranteed to be rapidly lowered after the vehicle is powered off and the engine is flamed out, the reliability of the engine can be guaranteed, and the service life of the engine can be prolonged.
In addition, the control device for the vehicle engine water temperature according to the embodiment of the second aspect of the present invention may further have the following additional features:
according to an embodiment of the invention, the water circulation system of the engine comprises: a first heat exchanger and a fan; the first end of the cooling water path of the engine is connected with the first end of the first heat exchanger, the second end of the first heat exchanger is connected with the second end of the cooling water path of the engine, and the fan is arranged close to the first heat exchanger; wherein the control module controls the water circulation system of the engine to operate, and comprises: and controlling the first heat exchanger to cool a cooling water path of the engine, and cooling the first heat exchanger through the fan.
According to one embodiment of the invention, the vehicle further comprises a water circulation system of an air conditioner; wherein, the water circulating system of air conditioner includes: the switching valve, the water pump and the second heat exchanger; a first water outlet of the switching valve is connected with a third end of a cooling water path of the engine, a second water outlet of the switching valve is respectively connected with a fourth end of the cooling water path of the engine and a first end of the water pump, a second end of the water pump is connected with a first end of the second heat exchanger, and a second end of the second heat exchanger is connected with a water inlet of the switching valve; wherein the control module controls the water circulation system of the engine to operate, and comprises: and controlling the switching valve to be connected with the second water outlet of the switching valve from the switched water inlet, switching to the switched water inlet and connecting with the first water outlet of the switching valve, and controlling the water pump to be opened so as to enable the water circulation of the engine and the water circulation system of the air conditioner to be communicated and control the fan to work.
According to an embodiment of the present invention, the control module is further configured to: determining the working time and power of the fan and/or determining the opening degree of the water pump according to the water temperature of the engine and the target water temperature; wherein the working time is less than or equal to a set time; and controlling the fan according to the working time and power of the fan, and/or controlling the water pump according to the opening degree of the water pump.
Wherein the working time and the power of the fan are in positive correlation with the water temperature of the engine; the opening degree of the water pump and the water temperature of the engine are in positive correlation.
According to an embodiment of the invention, the control module controls a water circulation system of the engine to operate when the water temperature is greater than the set water temperature, and includes: and acquiring the water temperature and the temperature difference of the set water temperature, judging whether the temperature difference is greater than the set temperature difference, and controlling the water circulation system of the air conditioner and the water circulation system of the engine to form synchronization when the temperature difference is greater than the set temperature difference.
To achieve the above object, a third aspect embodiment of the invention proposes a vehicle control apparatus including: a processor and a memory; wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the above-mentioned control method of the vehicle engine water temperature.
By executing the control method of the water temperature of the vehicle engine, the vehicle control device can ensure that the water temperature of the engine is quickly reduced after the vehicle is powered off and the engine is shut down, so that the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
To achieve the above object, a fourth aspect embodiment of the invention proposes a vehicle that includes the vehicle control apparatus described above.
According to the vehicle provided by the embodiment of the invention, through the vehicle control device, the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, so that the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
To achieve the above object, a fifth embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the above control method for vehicle engine water temperature.
The computer-readable storage medium of the embodiment of the invention can ensure that the water temperature of the engine can be quickly reduced after the vehicle is powered off and the engine is flamed out by executing the control method of the water temperature of the vehicle engine, thereby ensuring the reliability of the engine and prolonging the service life of the engine.
In order to achieve the above object, a sixth aspect of the present invention provides a computer program product, which, when executed by an instruction processor in the computer program product, performs the above method for controlling the water temperature of the vehicle engine.
According to the computer program product provided by the embodiment of the invention, by executing the control method of the water temperature of the vehicle engine, the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, so that the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic illustration of a vehicle thermal management system according to one embodiment of the present invention;
FIG. 2 is a flowchart of a control method of a vehicle engine water temperature according to an embodiment of the invention;
FIG. 3 is a flowchart of a method of controlling a temperature of water in an engine of a vehicle according to an embodiment of the present invention;
fig. 4 is a block diagram schematically showing a control apparatus for a vehicle engine water temperature according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
A control method of a vehicle engine water temperature, a control device of a vehicle engine water temperature, a vehicle control apparatus, a vehicle, and a computer-readable storage medium of an embodiment of the invention are described below with reference to the drawings.
For vehicles, the engine thermal management system controls the engine to be kept at an optimal temperature (for example, 90 ℃) during a working cycle, so that the engine can be operated at the optimal temperature to be most fuel-saving, most stable and most effective.
Under a high-temperature environment, if the vehicle is in a low-power climbing process for a long time, the engine can be in a high-power output working condition for a long time, for example, the ambient temperature is about 45 ℃, the residual battery capacity is below 10%, the vehicle speed is between 50-60km/h, and the vehicle runs on a long slope for more than 1 hour, so that the water temperature of the engine can be at a higher temperature.
In this case, if the vehicle is locked at a standstill and the engine is shut down, the engine water temperature will continue to rise due to the heat radiation of the exhaust pipe, however, since the water pump driven by the engine is a mechanical water pump and the engine must rotate to operate, after the engine is shut down, the mechanical water pump will stop working, and the water for cooling the engine (here, the water is a coolant) will not flow, and at this time, the engine water temperature cannot be lowered only by the fan, which may cause the following problems: under a severe condition, the water temperature of the engine is higher than the set water temperature for a long time, so that the activity of the water of the engine is poor, the boiling point is changed (for example, the boiling point is changed from 120 ℃ to 110 ℃), the boiling point is reached before the water of the engine is extracted, the engine cannot be started, the reliability of the engine is affected, and the service life of the engine is shortened.
The method is used for acquiring the water temperature of the engine after responding to the power-off of the vehicle and the engine is shut down, and controlling the water circulation system of the engine to operate when the water temperature is higher than the set water temperature, so that the water temperature of the engine can be ensured to be rapidly reduced after the power-off of the vehicle and the engine is shut down, the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
Before describing the method for controlling the water temperature of the engine of the vehicle according to the embodiment of the present invention, the following vehicle management system will be described.
FIG. 1 is a schematic diagram of a vehicle thermal management system according to one embodiment of the present invention.
As shown in fig. 1, a vehicle thermal management system according to an embodiment of the present invention includes: the water circulation system of engine and the water circulation system of air conditioner.
Wherein, the water circulating system of engine includes: the system comprises an engine 11, a first heat exchanger 12, a fan 13, a mechanical water pump 14, a water tank 15 and a thermostat 16. A water circulation system of an air conditioner, comprising: a switching valve 17, a water pump 18 (such as an electronic water pump 18), a high-pressure water heating heater 19, a second heat exchanger 20, a compressor 31, a third heat exchanger 32 and a restrictor 33.
The control end of the mechanical water pump 14 is connected with the driving end of the engine 11, the first end of the mechanical water pump 14 is connected with the water tank 15, the first end of a cooling water path of the engine 11 is connected with the first end of the first heat exchanger 12, the second end of the first heat exchanger 12 is connected with the second end of the cooling water path of the engine 11, the third end of the cooling water path of the engine 11 is connected with the second end of the mechanical water pump 14, the fourth end of the cooling water path of the engine 11 is connected with the first end of the electronic water pump 18, the second end of the electronic water pump 18 is connected with the first end of the high-pressure water heater 19, the second end of the high-pressure water heater 19 is connected with the first end of the second heat exchanger 20, the second end of the second heat exchanger 20 is connected with the water inlet 1 of the switching valve 17, the first water outlet 2 of the switching valve 17 is respectively connected with the second end of the mechanical water pump 14 and the third end of the cooling water path of the engine 11, and the second water outlet 3 of the switching valve 17 is respectively connected with the fourth end of the cooling water path of the engine 11 and the first end of the electronic water pump 18. The exhaust port of the compressor 31 is connected with the first end of the third heat exchanger 32, the second end of the third heat exchanger 32 is connected with the first end of the choke 33, the second end of the choke 33 is connected with the third end of the second heat exchanger 20, and the fourth end of the second heat exchanger 20 is connected with the return port of the compressor 31.
The thermostat 16 may be connected between a second end of the cooling water path of the engine 11 and a fourth end of the cooling water path of the engine 11. A first temperature sensor T1 is provided at a water inlet of a first end of the cooling water path of the engine 11 to detect a temperature thereat. A second temperature sensor T2 is provided at the water inlet of the first end of the second heat exchanger 20 to detect the temperature there. A third temperature sensor T3 is provided at the water outlet of the second end of the first heat exchanger 12 to detect the temperature there. The outlet of the water tank 15 will typically provide two paths, one path being as described above, i.e. the other end of one path being connected to a first end of the mechanical water pump 14. And the other end of the other path is connected to a first end of a cooling water path of the engine 11 and a first end of the electronic water pump 18, respectively.
In this embodiment, the working principle of the above system is as follows:
when the switching valve 17 is powered on, the water inlet 1 of the switching valve 17 is communicated with the first water outlet 2 of the switching valve 17, the water inlet 1 of the switching valve 17 is disconnected from the second water outlet 3 of the switching valve 17, the coolant flowing out from the second end of the second heat exchanger 20 flows to the third end of the cooling water path of the engine 11 through the water inlet 1 of the switching valve 17 and the first water outlet 2 of the switching valve 17 in sequence, the coolant inside the engine is made to flow up and cool down, then flows out from the first end of the cooling water path of the engine 11, the flowing-out coolant becomes a low-pressure gas-liquid mixture, then the low-pressure gas-liquid mixture is heated by the first heat exchanger 12 to become a medium-pressure gaseous coolant, then the medium-pressure gaseous coolant flows to the second end of the cooling water path of the engine 11 and the thermostat 16 and the fourth end of the cooling water path of the engine 11, then the medium-pressure gaseous coolant is sent to the high-pressure water heating heater 19 by the electronic water pump 18, the medium-temperature high-pressure gaseous coolant becomes a high-temperature gaseous coolant, and then flows to the first end of the second water-heating heat exchanger 20, and the coolant flows as shown by the arrow in fig. 1.
When the switching valve 17 is de-energized, the water inlet 1 of the switching valve 17 communicates with the second water outlet 3 of the switching valve 17.
The second heat exchanger 20 can also be cooled by the operation of the compressor 31, specifically, the compressor 31 sends the refrigerant to the third heat exchanger 32 (used as a condenser), and after the temperature reduction treatment of the third heat exchanger 32, the refrigerant is sent to the second heat exchanger 20 through the restrictor 33, so as to perform the temperature reduction treatment on the coolant in the second heat exchanger 20.
Fig. 2 is a flowchart of a control method of a vehicle engine water temperature according to an embodiment of the present invention.
The subject of the embodiment of the present invention is a control device for a vehicle engine water temperature, which can be disposed in a vehicle control apparatus so that the vehicle control apparatus can execute a control method for the vehicle engine water temperature.
As shown in fig. 2, the method for controlling the water temperature of the engine of the vehicle according to the embodiment of the present invention includes the steps of:
and S201, responding to the power-off of the vehicle and after the engine is shut down, acquiring the water temperature of the engine.
For example, the water temperature of the engine can be detected by a first temperature sensor (T1) provided at a water inlet at a first end of a cooling water path of the engine (11).
S202, judging whether the water temperature is larger than the set water temperature.
Wherein the set water temperature can be set according to the boiling point of the cooling liquid.
And S203, controlling a water circulation system of the engine to operate when the water temperature is greater than the set water temperature.
In this embodiment, after the vehicle is powered off and the engine is turned off, the water temperature of the engine is obtained, then the water temperature of the engine is compared with the set water temperature, and when the water temperature of the engine is less than or equal to the set water temperature, the vehicle is directly controlled to enter the sleep mode, and when the water temperature of the engine is greater than the set water temperature, the water circulation system of the engine is controlled to operate, for example, the first heat exchanger is controlled to cool the cooling water path of the transmitter, and the fan is used to cool the first heat exchanger.
Therefore, according to the control method for the water temperature of the vehicle engine, disclosed by the embodiment of the invention, the water temperature of the engine is obtained after the vehicle is powered off and the engine is flamed out, and the water circulation system of the engine is controlled to operate when the water temperature is greater than the set water temperature, so that the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
In order to accelerate the cooling speed, in one embodiment of the invention, the operation of a water circulation system of an engine is controlled, and the method comprises the following steps: the switching valve is controlled to be connected with the second water outlet of the switching valve from the switched water inlet, the switched water inlet is connected with the first water outlet of the switching valve, the water pump is controlled to be opened, so that the water circulation of the engine and the water circulation system of the air conditioner are conducted (the flow direction of the cooling liquid is shown in figure 1), and the fan is controlled to work.
Generally, a time, i.e., a set time, is set for the vehicle to automatically lower the engine water temperature after power-off and engine shut-off. The water temperature of the engine is reduced to below the set water temperature as much as possible within the set time. Specifically, the working time (working time is less than or equal to the set time) and power of the fan can be determined according to the water temperature of the engine and the target water temperature, and/or the opening degree of the water pump is determined, and then the fan is controlled according to the working time and power of the fan within the set time, and/or the water pump is controlled according to the opening degree of the water pump.
Wherein, the working time and the power of the fan are in positive correlation with the water temperature of the engine; the opening degree of the water pump is in positive correlation with the water temperature of the engine. For example, the higher the water temperature of the engine, the more the fan is on, the higher the power is, the larger the water pump opening is, otherwise, the reverse is true.
In order to further accelerate the cooling speed, when the water temperature is greater than the set water temperature, the water circulation system of the engine is controlled to operate, and the method comprises the following steps: acquiring the temperature difference between the water temperature and the set water temperature; judging whether the temperature difference is larger than a set temperature difference or not; and when the temperature difference is greater than the set temperature difference, controlling the water circulation system of the air conditioner and the water circulation system of the engine to be synchronous. The set temperature can be set according to actual needs, and is not limited herein.
That is to say, when the difference between the water temperature and the set water temperature is large, the compressor is controlled to send the refrigerant to the third heat exchanger, the refrigerant is sent to the second heat exchanger through the throttle after being subjected to the temperature reduction treatment of the third heat exchanger, so as to perform the temperature reduction treatment on the cooling liquid in the second heat exchanger, and meanwhile, the water circulation of the engine is conducted with the water circulation system of the air conditioner (the flow direction of the cooling liquid is shown in fig. 1).
In order to reduce the power consumption of the vehicle, the vehicle is controlled to enter a sleep mode when the water temperature is less than or equal to the color constant water temperature.
To make the present invention more apparent to those skilled in the art, fig. 3 is a flowchart of a control method of a vehicle engine water temperature according to an embodiment of the present invention. As shown in fig. 3, a control method of a vehicle engine water temperature according to an embodiment of the present invention includes:
and S301, determining that the whole vehicle is locked electrically.
And S302, determining that the engine is shut down.
S303, obtaining the water temperature of the engine, and determining whether the water temperature is less than or equal to the set water temperature? If yes, go to step S304; if not, step S305 is performed.
And S304, controlling the whole vehicle to enter a sleep mode.
And S305, controlling the fan to operate, controlling the switching valves 1 and 2 to be communicated, and controlling the electronic water pump to be opened.
In summary, according to the control method for the water temperature of the vehicle-mounted engine in the embodiment of the invention, the water temperature of the engine is acquired in response to the power-off of the vehicle and after the engine is turned off, whether the water temperature is greater than the set water temperature is judged, and when the water temperature is greater than the set water temperature, the operation of the water circulation system of the engine is controlled, so that the water temperature of the engine can be ensured to be rapidly reduced after the power-off of the vehicle and the engine is turned off, the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
Fig. 4 is a block diagram schematically showing a control apparatus for a vehicle engine water temperature according to an embodiment of the present invention.
As shown in fig. 4, a control device 400 for a vehicle engine water temperature according to an embodiment of the present invention includes: an acquisition module 401, a judgment module 402 and a control module 403.
The acquiring module 401 is configured to acquire water temperature of an engine after the vehicle is powered off and the engine is shut down; a judging module 402, configured to judge whether the water temperature is greater than a set water temperature; and the control module 403 is used for controlling the water circulation system of the engine to operate when the water temperature is higher than the set water temperature.
According to one embodiment of the present invention, a water circulation system of an engine includes: a first heat exchanger and a fan; the first end of a cooling water path of the engine is connected with the first end of a first heat exchanger, the second end of the first heat exchanger is connected with the second end of the cooling water path of the engine, and the fan is arranged close to the first heat exchanger; wherein, the control module 403 controls the water circulation system of the engine to run, including: and controlling the first heat exchanger to cool a cooling water path of the engine, and cooling the first heat exchanger through a fan.
According to one embodiment of the invention, the vehicle further comprises a water circulation system of an air conditioner; wherein, the water circulating system of air conditioner includes: the switching valve, the water pump and the second heat exchanger; a first water outlet of the switching valve is connected with a third end of a cooling water path of the engine, a second water outlet of the switching valve is respectively connected with a fourth end of the cooling water path of the engine and a first end of the water pump, a second end of the water pump is connected with a first end of a second heat exchanger, and a second end of the second heat exchanger is connected with a water inlet of the switching valve; wherein, the control module 403 controls the operation of the water circulation system of the engine, including: and controlling the switching valve to be connected with the second water outlet of the switching valve from the switched water inlet, switching to the first water outlet of the switched water inlet, controlling the water pump to be opened so as to enable the water circulation of the engine and the water circulation system of the air conditioner to be communicated, and controlling the fan to work.
According to an embodiment of the present invention, the control module 403 is further configured to: determining the working time and power of a fan and/or determining the opening degree of a water pump according to the water temperature of an engine and the target water temperature; wherein, the working time is less than or equal to the set time; and controlling the fan according to the working time and power of the fan, and/or controlling the water pump according to the opening of the water pump.
Wherein, the working time and the power of the fan are in positive correlation with the water temperature of the engine; the opening of the water pump is in positive correlation with the water temperature of the engine.
According to an embodiment of the present invention, the control module 403 controls the water circulation system of the engine to operate when the water temperature is greater than the set water temperature, including: and acquiring the temperature difference between the water temperature and the set water temperature, judging whether the temperature difference is greater than the set temperature difference, and controlling a water circulation system of the air conditioner and a water circulation system of the engine to be synchronous when the temperature difference is greater than the set temperature difference.
It should be noted that details that are not disclosed in the control device for vehicle engine water temperature according to the embodiment of the present invention are please refer to details that are disclosed in the control method for vehicle engine water temperature according to the embodiment of the present invention, and detailed descriptions thereof are omitted here.
According to the control device for the water temperature of the vehicle engine, after the vehicle is powered off and the engine is flamed out, the water temperature of the engine is obtained through the obtaining module, whether the water temperature is larger than the set water temperature or not is judged through the judging module, and when the water temperature is larger than the set water temperature, the water circulating system of the engine is controlled to operate through the control module, so that the water temperature of the engine can be guaranteed to be rapidly lowered after the vehicle is powered off and the engine is flamed out, the reliability of the engine can be guaranteed, and the service life of the engine can be prolonged.
Based on the above embodiment, the invention also provides a vehicle control device.
A vehicle control apparatus of an embodiment of the present invention includes: a processor and a memory; wherein, the processor runs the program corresponding to the executable program code by reading the executable program code stored in the memory, so as to realize the control method of the water temperature of the vehicle engine.
According to the vehicle control device provided by the embodiment of the invention, by executing the control method of the water temperature of the vehicle engine, the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, so that the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
Based on the embodiment, the invention further provides a vehicle.
A vehicle of an embodiment of the invention includes the vehicle control apparatus described above.
According to the vehicle control device, the water temperature of the engine can be guaranteed to be rapidly reduced after the vehicle is powered off and the engine is flamed out, so that the reliability of the engine can be guaranteed, and the service life of the engine can be prolonged.
Based on the above embodiment, the present invention further provides a computer-readable storage medium.
A computer-readable storage medium of an embodiment of the present invention has stored thereon a computer program that, when executed by a processor, implements the above-described control method of the vehicle engine water temperature.
The computer-readable storage medium of the embodiment of the invention can ensure that the water temperature of the engine can be quickly reduced after the vehicle is powered off and the engine is flamed out by executing the control method of the water temperature of the engine of the vehicle, thereby ensuring the reliability of the engine and prolonging the service life of the engine.
Based on the above embodiment, the present invention further provides a computer program product.
The computer program product of the embodiment of the invention executes the control method of the water temperature of the vehicle engine when the instructions in the computer program product are executed by the processor.
According to the computer program product of the embodiment of the invention, by executing the control method of the water temperature of the vehicle engine, the water temperature of the engine can be ensured to be rapidly reduced after the vehicle is powered off and the engine is flamed out, so that the reliability of the engine can be ensured, and the service life of the engine can be prolonged.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A control method of a vehicle engine water temperature is characterized by comprising the following steps:
responding to the power-off of a vehicle and after an engine is shut down, and acquiring the water temperature of the engine;
judging whether the water temperature is greater than a set water temperature or not;
and when the water temperature is greater than the set water temperature, controlling a water circulation system of the engine to operate.
2. The control method according to claim 1, wherein a water circulation system of the engine includes: a first heat exchanger and a fan; the first end of the cooling water path of the engine is connected with the first end of the first heat exchanger, the second end of the first heat exchanger is connected with the second end of the cooling water path of the engine, and the fan is arranged close to the first heat exchanger;
wherein the controlling operation of the water circulation system of the engine includes: and controlling the first heat exchanger to cool a cooling water path of the engine, and cooling the first heat exchanger through the fan.
3. The control method according to claim 2, wherein the vehicle further includes a water circulation system of an air conditioner;
wherein, the water circulating system of air conditioner includes: the switching valve, the water pump and the second heat exchanger; a first water outlet of the switching valve is connected with a third end of a cooling water path of the engine, a second water outlet of the switching valve is respectively connected with a fourth end of the cooling water path of the engine and a first end of the water pump, a second end of the water pump is connected with a first end of the second heat exchanger, and a second end of the second heat exchanger is connected with a water inlet of the switching valve;
wherein the controlling operation of the water circulation system of the engine includes: and controlling the switching valve to be connected with the second water outlet of the switching valve from the switched water inlet, switching to the switched water inlet and connecting with the first water outlet of the switching valve, and controlling the water pump to be opened so as to enable the water circulation of the engine and the water circulation system of the air conditioner to be communicated and control the fan to work.
4. The control method according to claim 3, wherein,
determining the working time and power of the fan and/or determining the opening degree of the water pump according to the water temperature of the engine and the target water temperature; wherein the working time is less than or equal to a set time;
and controlling the fan according to the working time and power of the fan, and/or controlling the water pump according to the opening degree of the water pump.
5. The control method according to claim 4, wherein,
the working time and the power of the fan are in positive correlation with the water temperature of the engine;
the opening degree of the water pump is in positive correlation with the water temperature of the engine.
6. The control method according to claim 5, wherein the controlling the operation of the water circulation system of the engine when the water temperature is greater than the set water temperature includes:
acquiring the temperature difference between the water temperature and the set water temperature;
judging whether the temperature difference is larger than a set temperature difference or not;
and when the temperature difference is greater than the set temperature difference, controlling a water circulation system of the air conditioner and a water circulation system of the engine to be synchronous.
7. A control device of a vehicle engine water temperature, characterized by comprising:
the water temperature control system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the water temperature of an engine after the vehicle is powered off and the engine is shut down;
the judging module is used for judging whether the water temperature is greater than the set water temperature;
and the control module is used for controlling a water circulation system of the engine to operate when the water temperature is greater than the set water temperature.
8. A vehicle control apparatus characterized by comprising:
a processor and a memory;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory for implementing the control method of the vehicle engine water temperature according to any one of claims 1 to 6.
9. A vehicle, characterized by comprising: the vehicle control apparatus according to claim 8.
10. A computer-readable storage medium on which a computer program is stored, the computer program being characterized by implementing a control method of a vehicle engine water temperature according to any one of claims 1 to 6 when executed by a processor.
CN202210617744.2A 2022-06-01 2022-06-01 Vehicle and control method, device, control equipment and medium for water temperature of engine of vehicle Active CN115450745B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210617744.2A CN115450745B (en) 2022-06-01 2022-06-01 Vehicle and control method, device, control equipment and medium for water temperature of engine of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210617744.2A CN115450745B (en) 2022-06-01 2022-06-01 Vehicle and control method, device, control equipment and medium for water temperature of engine of vehicle

Publications (2)

Publication Number Publication Date
CN115450745A true CN115450745A (en) 2022-12-09
CN115450745B CN115450745B (en) 2024-04-23

Family

ID=84297270

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210617744.2A Active CN115450745B (en) 2022-06-01 2022-06-01 Vehicle and control method, device, control equipment and medium for water temperature of engine of vehicle

Country Status (1)

Country Link
CN (1) CN115450745B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3570055B2 (en) * 1996-01-23 2004-09-29 株式会社日本自動車部品総合研究所 Engine cooling system
CN101547803A (en) * 2007-02-20 2009-09-30 康奈可关精株式会社 Air conditioning system for vehicle
JP2011220156A (en) * 2010-04-07 2011-11-04 Suzuki Motor Corp Control device of cooling system
US20120259530A1 (en) * 2011-04-07 2012-10-11 Honda Motor Co., Ltd. Stop control system for internal combustion engine
CN103261618A (en) * 2010-12-15 2013-08-21 爱三工业株式会社 Engine cooling device
CN206231185U (en) * 2016-10-25 2017-06-09 蔚来汽车有限公司 For the heat pump type air conditioning system of electric automobile
US20200370464A1 (en) * 2016-07-26 2020-11-26 Guangzhou Automobile Group Co., Ltd. Method and Apparatus for Controlling Water Temperature of Engine
CN114294088A (en) * 2021-12-30 2022-04-08 潍柴动力股份有限公司 Cooling system control method and device, cooling system and driving equipment
US20240018895A1 (en) * 2021-04-27 2024-01-18 Byd Company Limited Vehicle and thermal management control method and device therefor, and storage medium

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3570055B2 (en) * 1996-01-23 2004-09-29 株式会社日本自動車部品総合研究所 Engine cooling system
CN101547803A (en) * 2007-02-20 2009-09-30 康奈可关精株式会社 Air conditioning system for vehicle
JP2011220156A (en) * 2010-04-07 2011-11-04 Suzuki Motor Corp Control device of cooling system
CN103261618A (en) * 2010-12-15 2013-08-21 爱三工业株式会社 Engine cooling device
US20120259530A1 (en) * 2011-04-07 2012-10-11 Honda Motor Co., Ltd. Stop control system for internal combustion engine
US20200370464A1 (en) * 2016-07-26 2020-11-26 Guangzhou Automobile Group Co., Ltd. Method and Apparatus for Controlling Water Temperature of Engine
CN206231185U (en) * 2016-10-25 2017-06-09 蔚来汽车有限公司 For the heat pump type air conditioning system of electric automobile
US20240018895A1 (en) * 2021-04-27 2024-01-18 Byd Company Limited Vehicle and thermal management control method and device therefor, and storage medium
CN114294088A (en) * 2021-12-30 2022-04-08 潍柴动力股份有限公司 Cooling system control method and device, cooling system and driving equipment

Also Published As

Publication number Publication date
CN115450745B (en) 2024-04-23

Similar Documents

Publication Publication Date Title
US10202023B2 (en) Hybrid refrigeration system for a mobile unit and method of operation
US10059172B2 (en) Air conditioning system, method for controlling the same and hybrid vehicle
KR101222331B1 (en) Heat-pump hot water apparatus
CN103827597B (en) Refrigerating plant
US9677458B2 (en) Temperature control device for internal combustion engine
KR101488472B1 (en) Drain device control system of waste heat using mixing valve and the mehtod thereof
KR20170108447A (en) Betterly cooling system for vehicle
CN103105023A (en) Fan speed control for precision cooling of air-cooled condenser
KR102370941B1 (en) Intercooler cooling apparatus for controlling oil temperature and method for controlling of the same
CN112909383A (en) Thermal management control method and system for cooling power battery
US20220302519A1 (en) Battery cooling system
CN116345018A (en) Battery thermal management system, control system and method and electric automobile
KR101459880B1 (en) Control method for heat pump system of electric vehicle
CN115450745A (en) Vehicle and control method, device, control equipment and medium for engine water temperature of vehicle
CN117167989A (en) Heat pump water heating equipment and control method thereof
KR101458511B1 (en) Co-generation system and a method of the same
CN103154630B (en) Heat pump hot-water supply system
CN116964387A (en) Method, computer program product and system for monitoring a heat pump
JP2003056907A (en) Heat pump water heater
US20240181834A1 (en) Integrated-Type Air-Conditioning System
CN114094139B (en) Fuel cell system with multi-level thermal management control
CN112484251B (en) Air conditioner outdoor unit water supply temperature control method and device, controller and air conditioner
CN107166595A (en) Air-conditioning system and its control method
US20200340718A1 (en) Geothermal heat pump freeze protection with electric heater staging
CN115742710A (en) Vehicle thermal management system, control method thereof and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant