CN111350580A - Engine cooling system and engine cooling control method - Google Patents
Engine cooling system and engine cooling control method Download PDFInfo
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- CN111350580A CN111350580A CN201811577797.6A CN201811577797A CN111350580A CN 111350580 A CN111350580 A CN 111350580A CN 201811577797 A CN201811577797 A CN 201811577797A CN 111350580 A CN111350580 A CN 111350580A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
Abstract
The invention provides an engine cooling system and a control method thereof, and the system comprises: the system comprises an engine, a control module, an electronic water pump, an electronic thermostat, a temperature sensor and a heat dissipation device; the temperature sensor is arranged on the engine and is electrically connected with the control module; the temperature sensor is used for measuring the current temperature of the engine and transmitting the current temperature to the control module; the control module is electrically connected with the electronic water pump and the electronic thermostat respectively and used for controlling the opening degrees of a switch of the electronic water pump and the electronic thermostat according to the current temperature and the first target preset temperature stored in the control module so as to enable the current temperature to reach the first target preset temperature; the electronic thermostat is used for controlling the flow of the heat dissipation liquid in the first water channel. The engine cooling system of the invention uses less electronic elements, and can accurately realize the control of the cooling system, so that the engine always works at a proper temperature.
Description
Technical Field
The invention relates to the technical field of engine cooling, in particular to an engine cooling system and an engine cooling control method.
Background
The engine is used as a core component of the vehicle, so that the engine always works at a proper temperature, the oil consumption and the emission of the whole vehicle can be reduced, and the engine can generate a large amount of heat during working to increase the temperature of the engine, so that the cooling of the engine is very important.
The existing cooling system has a plurality of electric control components, the functions of which are overlapped, so that control logic conflicts are caused; the engine cooling system cannot operate according to the set temperature, and the oil consumption is poor to improve; there are also unreasonable control strategies, coolant temperature imbalances, and coolant temperatures that are either low or high, which can present a quality risk to the engine.
Disclosure of Invention
In view of the above, the present invention is directed to an engine cooling system, so that the cooling system can accurately control the cooling of the engine according to the actual working condition of the engine.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an engine cooling system, the system comprising: the system comprises an engine, a control module, an electronic water pump, an electronic thermostat, a temperature sensor and a heat dissipation device;
the temperature sensor is arranged on the engine and is electrically connected with the control module; the temperature sensor is used for measuring the current temperature of the engine and transmitting the current temperature to the control module;
the control module is electrically connected with the electronic water pump and the electronic thermostat respectively and is used for controlling the opening degrees of a switch of the electronic water pump and the electronic thermostat according to the current temperature and a first target preset temperature stored in the control module so as to enable the current temperature to reach the first target preset temperature;
the electronic water pump is used for providing power for the cooling system;
the electronic thermostat is arranged at a water outlet or a water inlet of the engine and is connected with the heat dissipation device through a first water path; the electronic thermostat is used for controlling the flow of the heat dissipation liquid in the first water channel.
Further, the method also comprises the following steps: a warm air device;
one end of the warm air device is connected with the engine through a second water path, and the other end of the warm air device is connected with the electronic water pump through the second water path;
further, the method also comprises the following steps: an engine oil device;
one end of the engine oil device is connected with the engine through a third water path, and the other end of the engine oil device is connected with the electronic water pump through a third water path; the temperature of the oil device is consistent with the temperature of the engine.
Compared with the prior art, the cooling system has the following advantages:
the engine cooling system of the present invention includes: the system comprises an engine, a control module, an electronic water pump, an electronic thermostat, a temperature sensor and a heat dissipation device; the temperature sensor is arranged on the engine and is electrically connected with the control module; the temperature sensor is used for measuring the current temperature of the engine and transmitting the current temperature to the control module; the control module is electrically connected with the electronic water pump and the electronic thermostat respectively and is used for controlling the opening degrees of a switch of the electronic water pump and the electronic thermostat according to the current temperature and a first target preset temperature stored in the control module so as to enable the current temperature to reach the first target preset temperature; the electronic water pump is used for providing power for the cooling system; the electronic thermostat is arranged at a water outlet or a water inlet of the engine and is connected with the heat dissipation device through a first water path; the electronic thermostat is used for controlling the flow of the heat dissipation liquid in the first water channel. The engine cooling system of the invention uses less electronic elements, and can accurately realize the control of the cooling system, so that the engine always works at a proper temperature.
Another object of the present invention is to propose an engine cooling control method to operate the engine at a suitable temperature in any case.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an engine cooling control method applied to the system of any one of the above, the method comprising:
the control module acquires a first target preset temperature required to be reached by the engine;
the control module acquires the current temperature of the engine measured by the temperature sensor;
the control module controls the electronic water pump and the electronic thermostat to cool the engine according to the first target preset temperature and the current temperature.
Further, the method comprises: when the engine is started, the electronic thermostat and the electronic water pump are set to be in a closed state; the control module controls an electronic water pump and an electronic thermostat to cool the engine according to the first target preset temperature and the current temperature, and the control module comprises:
when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow until the current temperature reaches the first target preset temperature.
Further, when the current temperature is higher than a first intermediate temperature, the controlling module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow until the current temperature reaches the first target preset temperature, including:
when the current temperature is higher than a first intermediate temperature and lower than a second intermediate temperature, starting the electronic water pump, and controlling the electronic water pump to work at a first target flow rate so as to enable a second water path where the heater device is located to obtain flowing heat;
when the current temperature is higher than the second intermediate temperature and lower than a first target preset temperature, controlling the electronic water pump to work at a second target flow rate so as to heat the engine oil device to be consistent with the temperature of the engine until the current temperature reaches the first target preset temperature; wherein the first intermediate temperature is less than the second intermediate temperature, which is less than a first target preset temperature; the second flow rate is greater than the first flow rate.
Further, when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow rate, and after the current temperature reaches the first target preset temperature, the method further includes:
when the current temperature reaches the first target preset temperature and is higher than the second target preset temperature, the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device until the current temperature reaches the second target preset temperature.
Further, when the current temperature reaches the first target preset temperature and is greater than a second target preset temperature, the control module controls the electronic thermostat to open a first water path connected to the heat dissipation device until the current temperature reaches the second target preset temperature, and the method further includes:
when the current temperature is lower than a second target preset temperature, the control module controls the electronic thermostat to be closed, so that the current temperature reaches the first target preset temperature;
and executing the step that when the current temperature reaches the first target preset temperature and is higher than the second target preset temperature, the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device.
Further, when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow rate until the current temperature reaches the first target preset temperature, and the method further includes:
the control module acquires the driving data of the engine and determines the preset target flow of the electronic water pump according to the driving data.
Further, when the current temperature reaches the first target preset temperature and is greater than the second target preset temperature, before the control module controls the electronic thermostat to open the first water path connected to the heat dissipation device, the method further includes:
the control module controls the target opening of the electronic thermostat according to the driving data;
the control module control the electronic thermostat opens the first water route of being connected with heat abstractor, includes:
and the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device according to the target opening.
Further, the traveling data includes: one or more of engine speed, torque, first target preset temperature, ambient temperature, and current temperature.
Compared with the prior art, the engine cooling control method has the following advantages:
the engine cooling control method of the invention includes: the control module acquires a first target preset temperature required to be reached by the engine; the control module acquires the current temperature of the engine measured by the temperature sensor; the control module controls the electronic water pump and the electronic thermostat to cool the engine according to the first target preset temperature and the current temperature. In the embodiment of the invention, the working modes of the electronic water pump and the electronic thermostat can be controlled according to the first target preset temperature and the current temperature which are required to be reached by the engine, so that the engine is cooled.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic illustration of an engine cooling system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a method for controlling engine cooling according to an embodiment of the present invention;
FIG. 3 is a schematic representation of an engine speed versus temperature relationship in accordance with an embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps in another method for controlling engine cooling according to an embodiment of the present invention.
Description of reference numerals:
10-an engine, 20-a control module, 30-an electronic water pump, 40-an electronic thermostat, 50-a temperature sensor, 60-a heat dissipation device, 70-a warm air device, 80-an engine oil device, 61-a first water path, 71-a second water path and 81-a third water path.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
FIG. 1 is a schematic diagram of an engine cooling system according to an embodiment of the present invention; the system comprises:
an engine cooling system, the system comprising: the engine 10, the control module 20, the electronic water pump 30, the electronic thermostat 40, the temperature sensor 50, and the heat sink 60.
The temperature sensor 50 is disposed on the engine 10 and electrically connected to the control module 20; the temperature sensor 50 is configured to measure a current temperature of the engine 10 and transmit the current temperature to the control module 20.
The control module 20 is electrically connected to the electronic water pump 30 and the electronic thermostat 40, and is configured to control the opening of the electronic water pump 30 and the electronic thermostat 4 according to the current temperature and a first target preset temperature stored in the control module 20, so that the current temperature reaches the first target preset temperature.
In the embodiment of the present invention, the operating states of the electronic water pump 30 and the electronic thermostat 40 are controlled by the control module 20, and the control module 20 can determine whether the engine needs to be cooled according to the current temperature of the engine.
The electric water pump 30 is used to power the cooling system.
In the embodiment of the present invention, referring to fig. 1, the electronic water pump 30 is provided at the water inlet of the engine 10, and is connected to the first water passage 61, the second water passage 71, and the third water passage 81.
In the embodiment of the present invention, the electronic water pump 30 is controlled by the control module 20 to deliver the heat dissipating fluid to the first water path 61, the second water path 71, and the third water path 81, so that the heat dissipating fluid flows through the engine 10, the heat dissipating device 60, the air heater 70, and the engine oil 80.
The electronic thermostat 40 is disposed at a water outlet or a water inlet of the engine 10, and is connected to the heat sink 60 through a first water path; the electronic thermostat 40 is used for controlling the flow of the heat dissipating liquid in the first water path 61.
In the embodiment of the present invention, the electronic thermostat 40 is equivalent to a switch, when the electronic thermostat is turned off, there is no flowing heat dissipating liquid in the first water path 61, and the heat dissipating device 60 does not dissipate heat, and the engine is in a continuous temperature raising process. When the opening of the electronic thermostat is small, the flow rate of the heat dissipating liquid in the first water path 61 is small, and the heat dissipating efficiency of the heat dissipating device 60 is low, and when the opening of the electronic thermostat is large, the flow rate of the heat dissipating liquid in the first water path 61 is large, and the heat dissipating efficiency of the heat dissipating device 60 is high.
In the embodiment of the present invention, the method further includes: a warm air device 70;
one end of the warm air device 70 is connected to the engine 10 through a second water path 71, and the other end is connected to the electronic water pump through the second water path 71.
In the embodiment of the invention, the warm air device is required to be started usually when the weather is cold, and the heat of the warm air device is provided by the engine.
In the embodiment of the present invention, when the electronic water pump 30 is turned on, the heat dissipating liquid in the second water path 71 can flow, and the heating device can operate.
In the embodiment of the present invention, when the temperature of the engine 10 is high, the heat of the engine can be supplied to the heating device 70, and the heat use efficiency can be improved.
In the embodiment of the present invention, the method further includes: an oil device 80;
one end of the engine oil device 80 is connected with the engine 10 through a third water path 81, and the other end of the engine oil device is connected with the electronic water pump through a 30 th water path 81; the temperature of the oil device 80 corresponds to the temperature of the engine 10.
In the embodiment of the invention, the engine oil device is used for improving the energy source of the engine, when the engine needs to be cooled, the engine oil device also needs to be cooled, and when the engine needs to be heated, the engine oil device also needs to be heated.
Compared with the prior art, the cooling system has the following advantages:
the engine cooling system of the present invention includes: the system comprises an engine, a control module, an electronic water pump, an electronic thermostat, a temperature sensor and a heat dissipation device; the temperature sensor is arranged on the engine and is electrically connected with the control module; the temperature sensor is used for measuring the current temperature of the engine and transmitting the current temperature to the control module; the control module is electrically connected with the electronic water pump and the electronic thermostat respectively and is used for controlling the opening degrees of a switch of the electronic water pump and the electronic thermostat according to the current temperature and a first target preset temperature stored in the control module so as to enable the current temperature to reach the first target preset temperature; the electronic water pump is used for providing power for the cooling system; the electronic thermostat is arranged at a water outlet or a water inlet of the engine and is connected with the heat dissipation device through a first water path; the electronic thermostat is used for controlling the flow of the heat dissipation liquid in the first water channel. The engine cooling system of the invention uses less electronic elements, and can accurately realize the control of the cooling system, so that the engine always works at a proper temperature.
Example two
Referring to FIG. 2, a flowchart illustrating steps of a method for controlling engine cooling according to an embodiment of the present invention includes the steps of:
in step 201, a control module obtains a first target preset temperature that the engine needs to reach.
In an embodiment of the present invention, referring to fig. 3, the abscissa is the rotational speed of the engine, and the ordinate is the average effective pressure of the engine at different temperatures, wherein the larger the average effective pressure, the stronger the work capacity of the engine.
In the embodiment of the invention, the control module can obtain a first target preset temperature corresponding to the rotating speed according to the rotating speed of the engine. The first target preset temperature is the temperature at which the average effective pressure of the engine is maximized at a specified rotation speed. As shown in fig. 3, when the engine speed is 1600, the temperature at which the average effective pressure is maximized is 95 ℃, i.e., the first target preset temperature is 95 ℃.
In the embodiment of the present invention, a corresponding relationship between the rotation speed of the engine and the first target preset temperature may be stored in the control module in advance, and the control module may obtain the corresponding first target preset temperature according to the rotation speed of the engine.
In step 202, the control module obtains a current temperature of the engine measured by a temperature sensor.
And 203, controlling the electronic water pump and the electronic thermostat to cool the engine by the control module according to the first target preset temperature and the current temperature.
In an embodiment of the present invention, a control module obtains a current temperature of an engine and compares the current temperature to a first target preset temperature. For example, when the first target preset temperature is 95 ℃ and the current temperature of the engine is 20 ℃, the electronic water pump and the electronic thermostat may be controlled to be both in a closed state, so that the engine is rapidly heated. When the current temperature of the engine rises to 50 ℃, the electronic water pump can be started to work at a lower flow rate, the electronic thermostat is still closed, the air heating device can obtain heat to heat the interior of a vehicle cab, and when the current temperature of the engine rises to 80 ℃, the electronic water pump works at a higher flow rate to quickly heat the engine oil device. And when the current temperature of the engine is raised to be higher than 95 ℃, a first water path controlled by the electronic thermostat is opened to dissipate heat, so that the current temperature of the engine returns to 95 ℃.
Compared with the prior art, the engine cooling control method has the following advantages:
the engine cooling control method of the invention includes: the control module acquires a first target preset temperature required to be reached by the engine; the control module acquires the current temperature of the engine measured by the temperature sensor; the control module controls the electronic water pump and the electronic thermostat to cool the engine according to the first target preset temperature and the current temperature. In the embodiment of the invention, the working modes of the electronic water pump and the electronic thermostat can be controlled according to the first target preset temperature and the current temperature which are required to be reached by the engine, so that the engine is cooled.
EXAMPLE III
Referring to FIG. 4, a flowchart illustrating steps of a method for controlling engine cooling according to an embodiment of the present invention includes the steps of:
in step 301, a control module obtains a first target preset temperature that the engine needs to reach.
In the embodiment of the invention, when the engine is in a stop running state, the electronic thermostat and the electronic water pump are both in a closed state, namely the cooling system does not work, and when the engine is started, the electronic thermostat and the electronic water pump are also set in the closed state.
In the embodiment of the invention, when the engine is in cold start, a first target preset temperature which needs to be reached by the engine is obtained, wherein the first target preset temperature is preset by the control module. For example, it is preset that the first target preset temperature to be reached when the engine is started in a cold state is 95 ℃.
In step 302, the control module obtains a current temperature of the engine measured by a temperature sensor.
In the embodiment of the invention, the current temperature of the engine at the beginning of the cold start is generally the ambient temperature, for example, when the ambient temperature is 20 ℃, the current temperature at the cold start should be 20 ℃.
And 303, acquiring running data of the engine by the control module, and determining a preset target flow of the electronic water pump according to the running data.
The travel data includes: one or more of engine speed, torque, first target preset temperature, ambient temperature, and current temperature.
In the embodiment of the invention, the preset target flow of the electronic water pump corresponding to the running data can be determined in advance according to experimental data, the corresponding relation is stored in the control module, and the preset target flow can be determined when the running data of the engine is obtained.
And 304, when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow until the current temperature reaches the first target preset temperature.
In the embodiment of the invention, when the engine is in cold start, the first water path, the second water path and the third water path are not communicated because the electronic water pump and the electronic thermostat are both in the closed state, and the engine can be continuously heated. When the temperature of the engine is increased to be higher than the first intermediate temperature, wherein the first intermediate temperature can be set to be 50 ℃, the electronic water pump is turned on at the moment, the second water path and the third water path start to circulate, the corresponding air heating device and the corresponding engine oil device are heated, and the electronic water pump is turned on at the first intermediate temperature to increase the temperature in the cab and achieve the defrosting effect.
In the embodiment of the present invention, the first intermediate temperature is also a preset temperature, and the first intermediate temperature ranges from 45 ℃ to 55 ℃.
In the embodiment of the invention, after the temperature of the engine is higher than 50 ℃, the electronic thermostat is still in the closed state, heat dissipation is not carried out, and the temperature of the engine can be continuously raised to the first target preset temperature.
In an embodiment of the present invention, step 304 comprises: when the current temperature is higher than a first intermediate temperature and lower than a second intermediate temperature, starting the electronic water pump, and controlling the electronic water pump to work at a first target flow rate so as to enable a second water path where the heater device is located to obtain flowing heat; when the current temperature is higher than the second intermediate temperature and lower than a first target preset temperature, controlling the electronic water pump to work at a second target flow rate so as to heat the engine oil device to be consistent with the temperature of the engine until the current temperature reaches the first target preset temperature; wherein the first intermediate temperature is less than the second intermediate temperature, which is less than a first target preset temperature; the second flow rate is greater than the first flow rate.
In the embodiment of the invention, when the current temperature of the engine is between the room temperature and the first intermediate temperature, the electronic water pump and the electronic thermostat are in a closed state, and the temperature of the engine is continuously increased; when the current temperature is between a first intermediate temperature and a second intermediate temperature, the electronic water pump works at a first target flow (low), the electronic thermostat is closed, the engine is continuously heated, and the second water channel circulates to heat the heater; the current temperature is between the second intermediate temperature and the first target preset temperature, the electronic water pump works at the second target flow (high), the electronic thermostat is closed, the third water path circulates fast, the engine oil device is enabled to be heated fast, energy is provided for the engine, and the engine is heated to the first target preset temperature.
In the embodiment of the invention, the first intermediate temperature is 45-55 ℃, the second intermediate temperature is 70-80 ℃, and the first target preset temperature is 90-95 ℃.
Preferably, the first intermediate temperature is 50 ℃, the second intermediate temperature is 70 ℃ and the first target preset temperature is 95 ℃.
In step 305, the control module obtains driving data of the engine and controls a target opening degree of the electronic thermostat according to the driving data.
In the embodiment of the invention, when the current temperature reaches the first target preset temperature, the cold start process of the engine is finished, and at this time, the electronic thermostat needs to be opened for cooling, but the target opening degree of the electronic thermostat needs to be determined according to the driving data, and the faster the engine speed is, the more heat the engine generates, and the larger the target opening degree needs to be, so as to achieve the purpose of rapid heat dissipation. The target opening degree of the electronic thermostat is also controlled by the ambient temperature, the first target preset temperature and the like.
Step 306, when the current temperature reaches the first target preset temperature and is higher than a second target preset temperature, the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device until the current temperature reaches the second target preset temperature.
In the embodiment of the invention, the second target preset temperature is smaller than the first target preset temperature, the first target preset temperature is a final temperature required to be reached when the engine is in cold start, and the second target preset temperature is a driving temperature required to be reached by the engine in the driving process. And the second target preset temperature is the optimal running temperature at which the engine does work maximally under the corresponding running data.
In the embodiment of the invention, when the engine reaches the first target preset temperature, the cold start process of the engine is finished, normal running is started, the engine needs to be cooled, at the moment, the electronic thermostat is opened, namely the first water path starts to circulate, the heat dissipation device starts to dissipate heat, and the engine starts to cool.
In an embodiment of the invention, the second target preset temperature is 80 ℃ to 85 ℃, preferably 80 ℃.
The control module control the electronic thermostat opens the first water route of being connected with heat abstractor, includes: and the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device according to the target opening, at the moment, the engine starts to cool, the electronic thermostat is opened until the current temperature of the engine is reduced to a second target preset temperature, and the temperature of the engine is reduced from the first target preset temperature (90 ℃) to the second target preset temperature (80 ℃).
In the embodiment of the present invention, when the current temperature of the engine is decreased from the first target preset temperature to less than the second target preset temperature, the electronic thermostat is turned off, at this time, heat dissipation is stopped, the engine starts to heat up to the first target preset temperature, and after the engine is heated up to the first target preset temperature, step 306 is executed, that is, the electronic thermostat is turned on, and cooling of the engine is continued. The current temperature of the engine is always kept at the optimum operating temperature.
In the embodiment of the invention, in the driving process, the driving data of the engine are changed, and the control module can acquire the driving data in real time, determine the second target preset temperature, the preset target flow of the electronic water pump and the target opening degree of the electronic thermostat and control the operation of the cooling system in real time.
Compared with the prior art, the engine cooling control method has the following advantages:
the engine cooling control method of the invention includes: the control module acquires a first target preset temperature required to be reached by the engine; the control module acquires the current temperature of the engine measured by the temperature sensor; the control module controls the electronic water pump and the electronic thermostat to cool the engine according to the first target preset temperature and the current temperature. In the embodiment of the invention, the working modes of the electronic water pump and the electronic thermostat can be controlled according to the first target preset temperature and the current temperature which are required to be reached by the engine, so that the engine is cooled.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. An engine cooling system, characterized in that the system comprises: the system comprises an engine, a control module, an electronic water pump, an electronic thermostat, a temperature sensor and a heat dissipation device;
the temperature sensor is arranged on the engine and is electrically connected with the control module; the temperature sensor is used for measuring the current temperature of the engine and transmitting the current temperature to the control module;
the control module is electrically connected with the electronic water pump and the electronic thermostat respectively and is used for controlling the opening degrees of a switch of the electronic water pump and the electronic thermostat according to the current temperature and a first target preset temperature stored in the control module so as to enable the current temperature to reach the first target preset temperature;
the electronic water pump is used for providing power for the cooling system;
the electronic thermostat is arranged at a water outlet or a water inlet of the engine and is connected with the heat dissipation device through a first water path; the electronic thermostat is used for controlling the flow of the heat dissipation liquid in the first water channel.
2. The system of claim 1, further comprising: a warm air device;
one end of the warm air device is connected with the engine through a second water path, and the other end of the warm air device is connected with the electronic water pump through the second water path.
3. The system of claim 1, further comprising: an engine oil device;
one end of the engine oil device is connected with the engine through a third water path, and the other end of the engine oil device is connected with the electronic water pump through a third water path; the temperature of the oil device is consistent with the temperature of the engine.
4. An engine cooling control method applied to the system according to any one of claims 1 to 3, the method comprising:
the control module acquires a first target preset temperature required to be reached by the engine;
the control module acquires the current temperature of the engine measured by the temperature sensor;
the control module controls the electronic water pump and the electronic thermostat to cool the engine according to the first target preset temperature and the current temperature.
5. The control method according to claim 4, characterized in that the method comprises: when the engine is started, the electronic thermostat and the electronic water pump are set to be in a closed state; the control module controls an electronic water pump and an electronic thermostat to cool the engine according to the first target preset temperature and the current temperature, and the control module comprises:
when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to work at a preset target flow until the current temperature reaches the first target preset temperature.
6. The method according to claim 5, wherein the controlling module controls the electronic water pump to be turned on and to operate at a preset target flow rate until the current temperature reaches the first target preset temperature when the current temperature is greater than a first intermediate temperature comprises:
when the current temperature is higher than a first intermediate temperature and lower than a second intermediate temperature, starting the electronic water pump, and controlling the electronic water pump to work at a first target flow rate so as to enable a second water path where the heater device is located to obtain flowing heat;
when the current temperature is higher than the second intermediate temperature and lower than a first target preset temperature, controlling the electronic water pump to work at a second target flow rate so as to heat the engine oil device to be consistent with the temperature of the engine until the current temperature reaches the first target preset temperature; wherein the first intermediate temperature is less than the second intermediate temperature, which is less than a first target preset temperature; the second flow rate is greater than the first flow rate.
7. The method according to claim 5, wherein when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to operate at a preset target flow rate until after the current temperature reaches the first target preset temperature, and further comprising:
when the current temperature reaches the first target preset temperature and is higher than the second target preset temperature, the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device until the current temperature reaches the second target preset temperature.
8. The method of claim 7, wherein when the current temperature reaches the first target preset temperature and is greater than a second target preset temperature, the controlling module controls the electronic thermostat to open a first water path connected to a heat sink until after the current temperature reaches the second target preset temperature, further comprising:
when the current temperature is lower than a second target preset temperature, the control module controls the electronic thermostat to be closed, so that the current temperature reaches the first target preset temperature;
and executing the step that when the current temperature reaches the first target preset temperature and is higher than the second target preset temperature, the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device.
9. The method according to claim 5, wherein when the current temperature is higher than a first intermediate temperature, the control module controls the electronic water pump to be started and controls the electronic water pump to operate at a preset target flow rate until the current temperature reaches the first target preset temperature, and further comprising:
the control module acquires the driving data of the engine and determines the preset target flow of the electronic water pump according to the driving data.
10. The method of claim 7, wherein before the control module controls the electronic thermostat to open a first water path connected to a heat sink when the current temperature reaches the first target preset temperature and is greater than a second target preset temperature, the method further comprises:
the control module acquires driving data of the engine and controls the target opening of the electronic thermostat according to the driving data;
the control module control the electronic thermostat opens the first water route of being connected with heat abstractor, includes:
and the control module controls the electronic thermostat to open a first water path connected with the heat dissipation device according to the target opening.
11. The method according to claim 9 or 10, characterized in that the driving data comprises: one or more of engine speed, torque, first target preset temperature, ambient temperature, and current temperature.
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| CN115143007A (en) * | 2021-03-30 | 2022-10-04 | 广州汽车集团股份有限公司 | Temperature control module control method and device and computer storage medium |
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