CN115045748A - Fan control method and device and engine - Google Patents
Fan control method and device and engine Download PDFInfo
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- CN115045748A CN115045748A CN202210789202.3A CN202210789202A CN115045748A CN 115045748 A CN115045748 A CN 115045748A CN 202210789202 A CN202210789202 A CN 202210789202A CN 115045748 A CN115045748 A CN 115045748A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004378 air conditioning Methods 0.000 claims abstract description 12
- 230000001276 controlling effect Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or 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
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The application discloses a fan control method and device and an engine. The method comprises the following steps: acquiring the current speed of the vehicle in the stable running process of the vehicle; when the current vehicle speed is less than the vehicle speed threshold value, controlling an engine fan of the vehicle to be started so as to radiate the air conditioner condenser of the vehicle by using the engine fan; wherein, the air outlet of the engine fan faces the air-conditioning condenser; and when the current vehicle speed is greater than or equal to the vehicle speed threshold value, controlling the engine fan to be closed so as to radiate the air-conditioning condenser by utilizing natural air generated by the current vehicle speed. Therefore, the frequent starting and stopping phenomenon caused by the fact that the engine fan is turned off along with the air conditioner compressor can be effectively avoided, the reliability of the fan clutch is improved, and generated natural wind can sufficiently dissipate heat of the air conditioner condenser when the current vehicle speed is high, so that the current vehicle speed is used as the on-off control condition of the engine fan, the oil consumption of the whole vehicle can be reduced, the energy is saved, and the driving feeling of the whole vehicle is further improved.
Description
Technical Field
The application relates to the technical field of automobile industry, in particular to a fan control method, a fan control device and an engine.
Background
In the automotive industry, engines are one of the important components of a complete vehicle. Along with the change of the operation environment and the operation working condition, the temperature of the engine can be changed continuously, and in order to ensure that the vehicle runs normally, the heat dissipation efficiency of the engine can be improved by controlling the engine fan so as to adjust the temperature of the engine.
In addition, in order to improve the refrigeration effect of the vehicle-mounted air conditioner, an air conditioner condenser of the whole vehicle can be arranged at an air outlet of the engine fan. When the air conditioner is started, namely a compressor of the air conditioner starts to work, the engine fan is controlled to be synchronously started so as to radiate heat of a condenser of the air conditioner by using the engine fan, thus the heat release process of the condenser is accelerated, and the refrigeration effect of the air conditioner is improved. However, in practical applications, the compressor of the air conditioner can be intelligently turned on and off according to parameters such as the temperature of the cab of the compressor, the pressure of the press machine and the like, so that the compressor is turned on and off when being turned on. Correspondingly, the engine fan can be frequently started and stopped along with the on-off of the compressor, so that the reliability of the fan clutch is influenced, and the driving feeling of the whole vehicle is further influenced.
Disclosure of Invention
The embodiment of the application provides a fan control method, a fan control device and an engine, and aims to solve the problem that the fan of the engine is frequently started and stopped when the fan is turned on and turned off along with a compressor of an air conditioner.
In a first aspect, an embodiment of the present application provides a fan control method, including:
acquiring the current speed of a vehicle in the process of stable running of the vehicle;
when the current vehicle speed is smaller than a vehicle speed threshold value, controlling an engine fan of the vehicle to be started so as to utilize the engine fan to radiate heat of an air conditioner condenser of the vehicle; wherein the air outlet of the engine fan faces the air conditioning condenser;
and when the current vehicle speed is greater than or equal to the vehicle speed threshold value, controlling the engine fan to be closed so as to radiate the air conditioner condenser by using natural wind generated by the current vehicle speed.
Optionally, the vehicle speed threshold is determined by:
acquiring current running environment parameters of the vehicle;
and correcting the basic vehicle speed corresponding to the natural wind according to the current running environment parameters to obtain a corrected vehicle speed, and taking the corrected vehicle speed as the vehicle speed threshold.
Optionally, the current driving environment parameter includes a current driving environment temperature;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
when the current running environment temperature is greater than or equal to a preset temperature, increasing the basic vehicle speed;
and when the current running environment temperature is lower than a preset temperature, reducing the basic vehicle speed.
Optionally, the current driving environment parameter includes a current driving environment pressure;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
when the current driving environment pressure is greater than or equal to a preset pressure, reducing the basic vehicle speed;
and when the current running environment pressure is smaller than the preset pressure, increasing the basic vehicle speed.
Optionally, the current driving environment parameters include a current driving environment temperature and a current driving environment pressure;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
acquiring an incidence relation among a running environment temperature, a running environment pressure and a vehicle speed threshold;
and correcting the basic vehicle speed according to the current running environment temperature and the current running environment pressure based on the incidence relation.
Optionally, after the controlling the engine fan of the vehicle is turned on, the method further comprises:
obtaining operating parameters of an engine intercooler;
and adjusting the operating parameters of the engine fan according to the operating parameters of the engine intercooler.
Optionally, said adjusting an operating parameter of said engine fan based on an operating parameter of said engine intercooler comprises:
when the intercooling efficiency of the engine intercooler is smaller than or equal to the preset efficiency and/or the after-intercooling temperature of the air flowing through the engine intercooler is larger than or equal to the preset after-intercooling temperature, increasing the rotating speed and/or the rotating time length of the engine fan;
and when the intercooling efficiency of the engine intercooler is higher than the preset efficiency and/or the intercooling temperature of the air flowing through the engine intercooler is lower than the preset intercooling temperature, reducing the rotating speed and/or the rotating time length of the engine fan.
Optionally, after the controlling the engine fan of the vehicle to be turned off, the method further comprises:
acquiring the operating temperature of the engine;
when the operating temperature of the engine is greater than or equal to a preset operating temperature, controlling the engine fan to be started;
and when the running temperature of the engine is lower than the preset running temperature, controlling the engine fan to be in a closed state continuously.
In a second aspect, an embodiment of the present application provides a fan control apparatus, including:
the vehicle speed acquisition module is used for acquiring the current vehicle speed of the vehicle in the running process of the vehicle;
the first control module is used for controlling an engine fan of the vehicle to be started when the current vehicle speed is smaller than a vehicle speed threshold value so as to utilize the engine fan to radiate heat of an air conditioner condenser of the vehicle;
and the second control module is used for controlling the engine fan to be closed when the current vehicle speed is greater than or equal to the vehicle speed threshold value so as to radiate the air conditioner condenser by utilizing natural wind generated by the current vehicle speed.
In a third aspect, an embodiment of the present application provides an engine, which includes an engine fan, and the above fan control device.
According to the technical scheme, the embodiment of the application has the following advantages:
in the embodiment of the application, the current speed of the vehicle can be acquired in the process of stable running of the vehicle, so that when the acquired current speed of the vehicle is smaller than a speed threshold value, an engine fan of the vehicle can be controlled to be started, and the air conditioner condenser of the vehicle is radiated by using the engine fan; when the acquired current vehicle speed is greater than or equal to the vehicle speed threshold value, the engine fan can be controlled to be turned off, and therefore natural air generated by the current vehicle speed is utilized to dissipate heat of the air-conditioning condenser. The switch of the engine fan is controlled through the current vehicle speed, the frequent starting and stopping phenomenon caused by the fact that the engine fan is switched off along with an air conditioner compressor can be effectively avoided, the reliability of a fan clutch is improved, and generated natural wind is enough to radiate a condenser of an air conditioner when the current vehicle speed is high, so that the oil consumption of the whole vehicle can be reduced, energy is saved, and the driving feeling of the whole vehicle is further improved by taking the current vehicle speed as the switch control condition of the engine fan.
Drawings
Fig. 1 is a flowchart of a fan control method according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of one implementation of determining a vehicle speed threshold provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of a fan control device according to an embodiment of the present disclosure.
Detailed Description
As described above, the inventors found in the study on the engine fan that: in order to improve the cooling effect of the vehicle air conditioner, a condenser of the air conditioner and an engine fan may be installed together. When the air conditioner is started, namely a compressor of the air conditioner starts to work, the engine fan can be controlled to be synchronously started so as to dissipate heat of a condenser of the air conditioner by using the engine fan, thus the heat release process of the condenser is accelerated, and the refrigeration effect of the air conditioner is improved. However, in practical applications, the compressor of the air conditioner can be intelligently turned on and off according to parameters such as the temperature of the cab of the compressor, the pressure of the press machine and the like, so that the compressor is turned on and off when being turned on. Correspondingly, the engine fan can be frequently started and stopped along with the on-off of the compressor, so that the reliability of the fan clutch is influenced, and the driving feeling of the whole vehicle is further influenced.
In order to solve the above problem, an embodiment of the present application provides a fan control method. The method comprises the following steps: the method comprises the steps that in the process of stable running of a vehicle, the current speed of the vehicle can be obtained, and therefore when the obtained current speed is smaller than a speed threshold value, an engine fan of the vehicle can be controlled to be started, and therefore the engine fan is used for dissipating heat of an air conditioner condenser of the vehicle; when the acquired current vehicle speed is greater than or equal to the vehicle speed threshold value, the engine fan can be controlled to be turned off, and therefore natural air generated by the current vehicle speed is utilized to dissipate heat of the air-conditioning condenser. For a detailed implementation, please refer to the description below.
The switch of the engine fan is controlled through the current vehicle speed, the frequent starting and stopping phenomenon caused by the fact that the engine fan is switched off along with an air conditioner compressor can be effectively avoided, the reliability of a fan clutch is improved, and generated natural wind is enough to radiate a condenser of an air conditioner when the current vehicle speed is high, so that the oil consumption of the whole vehicle can be reduced, energy is saved, and the driving feeling of the whole vehicle is further improved by taking the current vehicle speed as the switch control condition of the engine fan.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a fan control method according to an embodiment of the present disclosure. Referring to fig. 1, a fan control method provided in an embodiment of the present application may include:
s101: and acquiring the current speed of the vehicle in the process of the stable running of the vehicle.
The embodiment of the present application may not be specifically limited to the manner of obtaining the current speed of the vehicle. For example, if the cloud server can receive the current vehicle speed uploaded by the vehicle speed sensor, the current vehicle speed can be acquired in a manner of sending information by the cloud server, or the current vehicle speed sent by the vehicle speed sensor can be directly received. The vehicle speed sensor may be a magnetoelectric sensor, a hall effect sensor or a photoelectric sensor.
S102: and when the current vehicle speed is less than the vehicle speed threshold value, controlling an engine fan of the vehicle to be started so as to radiate the heat of an air conditioner condenser of the vehicle by using the engine fan.
Wherein, the air outlet of the engine fan faces the air conditioner condenser. Therefore, when the current vehicle speed is lower than the vehicle speed threshold value, because the vehicle speed is slow, natural wind which is enough for enabling the air conditioner condenser to quickly radiate heat cannot be generated, the engine fan can be controlled to be started, and the air conditioner is cooled by the wind generated by the engine fan.
In addition, in order to improve the degree of intelligence of the vehicle, in the embodiment of the application, after the engine fan is started, the operation parameters of the engine fan can be controlled, so that the intelligent regulation of the engine fan is realized. Specifically, after controlling an engine fan of the vehicle to be turned on, the fan control method may further include: obtaining operating parameters of an engine intercooler; and adjusting the operating parameters of the engine fan according to the operating parameters of the intercooler of the engine. Here, the operating parameter of the engine intercooler may be embodied as an intercooling efficiency of the engine intercooler and/or an intercooled temperature of air flowing through the engine intercooler. The operating parameter of the engine fan may be embodied as a rotational speed of the engine fan and/or a length of time the engine fan is rotated.
Correspondingly, the adjustment process of the operating parameters of the engine may specifically include: when the intercooling efficiency of an engine intercooler is smaller than or equal to the preset efficiency and/or the intercooling temperature of air flowing through the engine intercooler is larger than or equal to the preset intercooling temperature, increasing the rotating speed and/or the rotating time length of an engine fan; and when the intercooling efficiency of the engine intercooler is higher than the preset efficiency and/or the intercooling temperature of the air flowing through the engine intercooler is lower than the preset intercooling temperature, reducing the rotating speed and/or the rotating time length of the engine fan. The intercooling efficiency of the engine intercooler and/or the intercooling temperature of air flowing through the engine intercooler can affect the heat load of the engine and further affect the power of the engine, so that the operating parameters of the engine fan are adjusted based on the operating parameters of the engine intercooler, the operating effect of the engine can be considered while the air-conditioning refrigeration effect is considered, the power of the engine is improved, and the driving experience of the whole vehicle is further improved.
In practical applications, the adjustment of the rotation speed of the engine fan can be realized by presetting a rotation speed gear. For example, the speed of the engine fan may be preset to two gears, wherein one gear corresponds to a lower speed, such as 400 revolutions per minute; second gear corresponds to a higher speed, such as 800 revolutions per minute. When the rotating speed of the engine fan needs to be increased, the engine fan can be controlled to operate in a second gear; when the rotating speed of the engine fan needs to be reduced, the engine fan can be controlled to operate in the first gear. The number of gears and the specific speed are not particularly limited in the embodiments of the present application. Accordingly, the adjustment of the rotation period of the engine fan may also be achieved by presetting the rotation period gear. For example, the rotation period of the engine fan may be preset to two stages, wherein one stage corresponds to a shorter rotation period, such as 10 minutes of rotation; second gear corresponds to a longer rotation period, such as 30 minutes of rotation. When the rotation duration of the engine fan needs to be increased, the engine fan can be controlled to operate in a second gear; when the rotation duration of the engine fan needs to be reduced, the engine fan can be controlled to operate in the first gear. The number of gears and the specific rotation time length may not be specifically limited in the embodiments of the present application.
S103: and when the current vehicle speed is greater than or equal to the vehicle speed threshold value, controlling the engine fan to be closed so as to radiate the air-conditioning condenser by utilizing natural air generated by the current vehicle speed.
When the current vehicle speed is greater than or equal to the vehicle speed threshold value, because the vehicle speed is fast, natural wind which is enough to enable the air conditioner condenser to radiate heat quickly can be generated, at the moment, the natural wind is utilized to cool the condenser, the oil consumption of the whole vehicle can be reduced, and energy is saved.
In addition, in the embodiment of the application, after the engine fan is turned off, the on-off of the engine fan can be reasonably regulated and controlled by utilizing the running state of the engine, so that the working efficiency of the engine is improved. Specifically, after controlling an engine fan of the vehicle to be turned off, the fan control method may further include: acquiring the operating temperature of an engine; when the running temperature of the engine is greater than or equal to the preset running temperature, controlling a fan of the engine to be started; and when the running temperature of the engine is lower than the preset running temperature, controlling the fan of the engine to be in a closed state continuously. When the engine operating temperature is higher, can cool down it fast through the engine fan to guarantee that the engine carries out high-efficient running state, and when the engine operating temperature is lower, the cooling demand of engine is not high, consequently need not to open the fan, can further reduce whole car oil consumption.
In addition, for the determination process of the vehicle speed threshold, the embodiment of the present application may not be specifically limited. For convenience of understanding, the embodiment of the present application may provide an illustration of one possible implementation. For technical details, see the description below.
As can be known by combining the relevant contents of S101 to S103, in the embodiment of the present application, in the process of the vehicle running stably, the current vehicle speed of the vehicle may be obtained, and thus, when the obtained current vehicle speed is less than the vehicle speed threshold, the engine fan of the vehicle may be controlled to be turned on, so that the engine fan is used to dissipate heat of the air conditioner condenser of the vehicle; when the acquired current vehicle speed is greater than or equal to the vehicle speed threshold value, the engine fan can be controlled to be turned off, and therefore natural air generated by the current vehicle speed is utilized to dissipate heat of the air-conditioning condenser. The switch of the engine fan is controlled through the current vehicle speed, the frequent starting and stopping phenomenon caused by the fact that the engine fan is switched off along with an air conditioner compressor can be effectively avoided, the reliability of a fan clutch is improved, and generated natural wind is enough to radiate a condenser of an air conditioner when the current vehicle speed is high, so that the oil consumption of the whole vehicle can be reduced, energy is saved, and the driving feeling of the whole vehicle is further improved by taking the current vehicle speed as the switch control condition of the engine fan.
In order to obtain a more accurate vehicle speed threshold value, and to subsequently implement on-off control of an engine fan according to a magnitude relationship between a current vehicle speed and the accurate vehicle speed threshold value, so as to further improve reliability of a fan clutch and a driving feeling of a whole vehicle, an embodiment of the present application may provide a possible implementation manner of determining the vehicle speed threshold value, which may specifically include S201-S202. S201 and S202 are described below with reference to the embodiments and the drawings, respectively.
FIG. 2 is a flowchart of an implementation of determining a vehicle speed threshold according to an embodiment of the present disclosure. As shown in fig. 2, S201 to S202 may specifically include:
s201: and acquiring the current running environment parameters of the vehicle.
The current driving environment parameters of the vehicle may specifically include a current driving environment temperature and a current driving environment pressure. The embodiment of the present application is also not particularly limited to the manner of obtaining the current driving environment parameter of the vehicle. For example, if an environmental parameter sensor such as a temperature sensor and a pressure sensor is provided outside the vehicle, the current running environmental parameter can be quickly detected. For another example, if the vehicle can communicate with a weather server, the current driving environment parameter can be acquired by the way of sending information by the weather server.
S202: and correcting the basic vehicle speed corresponding to the natural wind according to the current driving environment parameters to obtain a corrected vehicle speed, and taking the corrected vehicle speed as a vehicle speed threshold value.
Here, the base vehicle speed corresponding to natural wind means a vehicle speed at which natural wind for radiating heat to the air-conditioning condenser can be generated. For example, the air conditioning condenser may be required to dissipate heat at a wind speed of at least 2.5 m/s, and accordingly, the base vehicle speed may be at least 9 km/h in order to generate natural wind of 2.5 m/s. In addition, the present embodiment may not specifically limit the manner of obtaining the base vehicle speed, and for convenience of understanding, the following description is made in conjunction with one possible embodiment.
In a possible implementation manner, the obtaining process of the basic vehicle speed corresponding to the natural wind may specifically include: acquiring identification information of a vehicle, and determining the identification information of an air conditioner condenser of the vehicle according to the identification information model of the vehicle; and acquiring a preset required wind speed based on the identification information of the air conditioner condenser, and acquiring a basic vehicle speed based on the required wind speed.
In addition, different current driving environment parameters and correction modes of the basic vehicle speed are different. Therefore, the embodiment of the present application can be described in terms of the correction method of the base vehicle speed according to the current running environment parameters.
In one case, the current driving environment parameter may include a current driving environment temperature. Correspondingly, S202 may specifically include: when the current running environment temperature is greater than or equal to the preset temperature, increasing the basic speed; and when the current running environment temperature is lower than the preset temperature, reducing the basic speed. Understandably, the higher the temperature is, the poorer the heat dissipation effect is, and the more likely auxiliary heat dissipation is needed; the lower the temperature, the better the heat dissipation effect, and the smaller the need for auxiliary heat dissipation. Therefore, when the current running environment temperature is high, such as in hot summer, the basic vehicle speed is properly increased, which is beneficial to reducing the limit condition of the starting of the engine, so that the air conditioner condenser can be quickly cooled by using the engine fan; when the current running environment temperature is low, for example, in cold winter, the basic vehicle speed is properly reduced, the limitation condition of starting the engine is favorably improved, and the natural wind generated by running of the vehicle is only used for radiating the heat of the air conditioner condenser, so that the oil consumption of the whole vehicle is reduced.
In another case, the current driving environment parameter may include a current driving environment pressure. Correspondingly, S202 may specifically include: when the current driving environment pressure is greater than or equal to the preset pressure, reducing the basic speed; and when the current running environment pressure is smaller than the preset pressure, increasing the basic speed. Here, the greater the pressure, the better the heat dissipation effect, and the smaller the need for auxiliary heat dissipation; the smaller the pressure, the poorer the heat dissipation effect, and the month may assist in heat dissipation. Therefore, when the current driving environment pressure is higher, such as in a low-altitude area, the basic vehicle speed is properly reduced, the limitation condition of starting the engine is favorably improved, and the natural wind generated by the driving of the vehicle is only utilized for radiating the heat of the air conditioner condenser, so that the oil consumption of the whole vehicle is reduced; when the current driving environment pressure is small, such as in a high altitude area, the basic vehicle speed is properly increased, which is beneficial to reducing the limit condition of the starting of the engine, so that the air conditioner condenser can be quickly cooled by the engine fan.
In yet another case, the current driving environment parameters may include a current driving environment temperature and a current driving environment pressure. Correspondingly, S202 may specifically include: acquiring an incidence relation among a running environment temperature, a running environment pressure and a vehicle speed threshold; and correcting the basic vehicle speed according to the current running environment temperature and the current running environment pressure based on the incidence relation. So, can be when the environment of traveling is comparatively complicated, for example the high-altitude area in winter, the low-altitude area in summer, the radiating influence of air temperature and atmospheric pressure to air conditioner condenser is taken into account comprehensively and basic speed of a motor vehicle is revised to reduce whole car oil consumption when quick radiating, improve the intelligent degree of vehicle.
According to the relevant contents of S201-S202, the basic vehicle is corrected through the current running environment parameters of the vehicle, a more accurate and reasonable vehicle threshold value can be obtained, and the on-off control of an engine fan is conveniently realized according to the magnitude relation between the current vehicle speed and the accurate vehicle speed threshold value, so that the reliability of the fan clutch and the driving feeling of the whole vehicle are further improved.
Based on the fan control method provided by the embodiment, the embodiment of the application further provides a fan control device. The fan control device is described below with reference to the embodiments and the drawings.
Fig. 3 is a schematic structural diagram of a fan control device according to an embodiment of the present disclosure. As shown in fig. 3, the fan control apparatus 300 according to the embodiment of the present application may include:
the vehicle speed obtaining module 301 is configured to obtain a current vehicle speed of a vehicle in a vehicle driving process;
the first control module 302 is used for controlling an engine fan of the vehicle to be started when the current vehicle speed is less than a vehicle speed threshold value so as to dissipate heat of an air conditioner condenser of the vehicle by using the engine fan;
and the second control module 303 is configured to control the engine fan to be turned off when the current vehicle speed is greater than or equal to the vehicle speed threshold, so as to dissipate heat of the air-conditioning condenser by using natural wind generated by the current vehicle speed.
In the embodiment of the application, through the cooperation of the vehicle speed obtaining module 301, the first control module 302 and the second control module 303, the frequent start and stop phenomenon that an engine fan starts to be turned off along with an air conditioner compressor can be effectively avoided, the reliability of a fan clutch is improved, and when the current vehicle speed is relatively fast, the generated natural wind is enough to radiate the air conditioner condenser, so that the current vehicle speed is used as the on-off control condition of the engine fan, the oil consumption of the whole vehicle can be reduced, the energy is saved, and the driving feeling of the whole vehicle is further improved.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan following the start of the air conditioner compressor, the fan control device 300 may further include:
the environment parameter acquisition module is used for acquiring the current running environment parameters of the vehicle;
and the vehicle speed correction module is used for correcting the basic vehicle speed corresponding to the natural wind according to the current running environment parameters to obtain the corrected vehicle speed, and the corrected vehicle speed is used as a vehicle speed threshold value.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan along with the start-off of the air conditioner compressor, the current driving environment parameter includes the current driving environment temperature. Accordingly, the vehicle speed correction module specifically includes:
the first correction module is used for increasing the basic vehicle speed when the current running environment temperature is greater than or equal to the preset temperature;
and the second correction module is used for reducing the basic vehicle speed when the current running environment temperature is less than the preset temperature.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan along with the start-off of the air conditioner compressor, the current driving environment parameter includes the current driving environment pressure. Accordingly, the vehicle speed correction module may specifically include:
the third correction module is used for reducing the basic vehicle speed when the current driving environment pressure is greater than or equal to the preset pressure;
and the fourth correction module is used for increasing the basic vehicle speed when the current running environment pressure is smaller than the preset pressure.
In one embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan caused by the start of the air conditioner compressor, the current driving environment parameters include the current driving environment temperature and the current driving environment pressure. Accordingly, the vehicle speed correction module specifically includes:
the fifth correction module is used for acquiring the incidence relation among the running environment temperature, the running environment pressure and the vehicle speed threshold;
and the sixth correction module is used for correcting the basic vehicle speed based on the incidence relation and according to the current running environment temperature and the current running environment pressure.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan following the start of the air conditioner compressor, the fan control device 300 may further include:
the first data acquisition module is used for acquiring the operating parameters of an engine intercooler;
and the fan adjusting module is used for adjusting the operating parameters of the engine fan according to the operating parameters of the engine intercooler.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon that the engine fan starts to be turned off when the air conditioner compressor starts, the fan adjustment module may specifically include:
the first adjusting module is used for increasing the rotating speed and/or the rotating time length of an engine fan when the intercooling efficiency of an engine intercooler is smaller than or equal to the preset efficiency and/or the intercooling temperature of air flowing through the engine intercooler is larger than or equal to the preset intercooling temperature;
the second adjusting module is used for reducing the rotating speed and/or the rotating time length of the engine fan when the intercooling efficiency of the engine intercooler is larger than the preset efficiency and/or the intercooling temperature of the air flowing through the engine intercooler is smaller than the preset intercooling temperature.
As an embodiment, in order to effectively avoid the frequent start-stop phenomenon of the engine fan following the start of the air conditioner compressor, the fan control device 300 may further include:
the second data acquisition module is used for acquiring the operating temperature of the engine;
the third control module is used for controlling the fan of the engine to be started when the running temperature of the engine is greater than or equal to the preset running temperature;
and the fourth control module is used for controlling the fan of the engine to be continuously in a closed state when the running temperature of the engine is lower than the preset running temperature.
Further, the embodiment of the application also provides an engine, which comprises an engine fan and any one fan control device.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A fan control method, comprising:
acquiring the current speed of the vehicle in the process of stable running of the vehicle;
when the current vehicle speed is smaller than a vehicle speed threshold value, controlling an engine fan of the vehicle to be started so as to utilize the engine fan to radiate heat of an air conditioner condenser of the vehicle; wherein the air outlet of the engine fan faces the air conditioning condenser;
and when the current vehicle speed is greater than or equal to the vehicle speed threshold value, controlling the engine fan to be closed so as to radiate the air conditioner condenser by using natural wind generated by the current vehicle speed.
2. The method of claim 1, wherein the vehicle speed threshold is determined by:
acquiring current running environment parameters of the vehicle;
and correcting the basic vehicle speed corresponding to the natural wind according to the current running environment parameters to obtain a corrected vehicle speed, and taking the corrected vehicle speed as the vehicle speed threshold.
3. The method of claim 2, wherein the current driving environment parameter comprises a current driving environment temperature;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
when the current running environment temperature is greater than or equal to a preset temperature, increasing the basic vehicle speed;
and when the current running environment temperature is lower than a preset temperature, reducing the basic vehicle speed.
4. The method of claim 2, wherein the current driving environment parameter comprises a current driving environment pressure;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
when the current driving environment pressure is greater than or equal to a preset pressure, reducing the basic vehicle speed;
and when the current running environment pressure is smaller than the preset pressure, increasing the basic vehicle speed.
5. The method of claim 2, wherein the current driving environment parameters include a current driving environment temperature and a current driving environment pressure;
the step of correcting the basic vehicle speed according to the current running environment parameters comprises the following steps:
acquiring an incidence relation among a running environment temperature, a running environment pressure and a vehicle speed threshold;
and correcting the basic vehicle speed according to the current running environment temperature and the current running environment pressure based on the incidence relation.
6. The method of any of claims 1-5, wherein after the controlling an engine fan of the vehicle is turned on, the method further comprises:
obtaining operating parameters of an engine intercooler;
and adjusting the operating parameters of the engine fan according to the operating parameters of the engine intercooler.
7. The method of claim 6, wherein the adjusting the operating parameter of the engine fan based on the operating parameter of the engine intercooler comprises:
when the intercooling efficiency of the engine intercooler is smaller than or equal to the preset efficiency and/or the after-intercooling temperature of the air flowing through the engine intercooler is larger than or equal to the preset after-intercooling temperature, increasing the rotating speed and/or the rotating time length of the engine fan;
and when the intercooling efficiency of the engine intercooler is higher than the preset efficiency and/or the intercooling temperature of the air flowing through the engine intercooler is lower than the preset intercooling temperature, reducing the rotating speed and/or the rotating time length of the engine fan.
8. The method of any of claims 1-5, wherein after controlling an engine fan of the vehicle to turn off, the method further comprises:
acquiring the operating temperature of the engine;
when the operating temperature of the engine is greater than or equal to a preset operating temperature, controlling the engine fan to be started;
and when the running temperature of the engine is lower than the preset running temperature, controlling the engine fan to be in a closed state continuously.
9. A fan control apparatus, comprising:
the vehicle speed acquisition module is used for acquiring the current vehicle speed of the vehicle in the running process of the vehicle;
the first control module is used for controlling an engine fan of the vehicle to be started when the current vehicle speed is smaller than a vehicle speed threshold value so as to utilize the engine fan to radiate heat of an air conditioner condenser of the vehicle;
and the second control module is used for controlling the engine fan to be closed when the current vehicle speed is greater than or equal to the vehicle speed threshold value so as to radiate the air conditioner condenser by utilizing natural wind generated by the current vehicle speed.
10. An engine comprising an engine fan, and the fan control apparatus of claim 9.
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| CN202210789202.3A CN115045748A (en) | 2022-07-06 | 2022-07-06 | Fan control method and device and engine |
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| CN202210789202.3A CN115045748A (en) | 2022-07-06 | 2022-07-06 | Fan control method and device and engine |
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