Silicone oil fan control method, device, vehicle and storage medium

Abstract

The present application provides a control method, device, vehicle and storage medium for a silicone oil fan, which is applied to the field of vehicles, and includes: when the vehicle is in an idling state, obtaining the engine parameters of the engine and the air conditioning parameters of the vehicle air conditioner; based on the engine parameters and the air conditioning parameters, determining whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed; when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, increasing the engine speed to a target speed to increase the speed of the silicone oil fan, and the target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner. The method can increase the engine speed to a target speed to increase the speed of the silicone oil fan when the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner, so that the silicone oil fan provides a stronger heat dissipation capacity.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and more specifically, to a control method, device, vehicle and storage medium for a silicone oil fan in the field of vehicles. Background Art

[0002] A silicone oil fan is installed on a hybrid vehicle to dissipate heat. The silicone oil fan is a cooling fan that uses silicone oil as a medium and transmits torque through the shear viscosity of silicone oil. The end of the silicone oil fan is connected to the front section of the vehicle's engine, and the engine speed will directly affect the speed of the silicone oil fan.

[0003] In the related art, if the vehicle is in an idling state and the engine speed of the vehicle is low, the speed of the silicone oil fan is also low, and the heat dissipation capacity is low. However, if the silicone oil fan is required to provide a stronger heat dissipation capacity at this time, the silicone oil fan cannot meet the requirements due to structural limitations, and abnormal temperature may occur. Summary of the invention

[0004] The present application provides a control method, device, vehicle and storage medium for a silicone oil fan. The method can increase the engine speed to a target speed when the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner, so as to increase the speed of the silicone oil fan, thereby enabling the silicone oil fan to provide stronger heat dissipation capability.

[0005] In a first aspect, a control method for a silicone oil fan is provided, the method comprising:

[0006] When the vehicle is in an idling state, obtaining engine parameters of the engine and air conditioning parameters of the vehicle air conditioner;

[0007] Based on the engine parameters and the air conditioning parameters, determining whether the silicone oil fan can meet the heat dissipation requirements of the engine and the vehicle air conditioning at the current speed of the engine of the vehicle;

[0008] When the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, the engine speed is increased to a target speed to increase the speed of the silicone oil fan. The target speed is an engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner.

[0009] Through the above technical solution, the method can obtain the engine parameters of the engine and the air-conditioning parameters of the vehicle air-conditioning when the vehicle is in an idle state, and determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air-conditioning at the current speed based on the engine parameters and the air-conditioning parameters. In the case where the heat dissipation requirements of the engine and the air-conditioning cannot be met, since the silicone oil fan is connected to the engine, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine, so at the current engine speed, the speed of the silicone oil fan cannot meet the heat dissipation requirements of the engine and the air-conditioning. In this case, the speed of the engine is increased to the target speed to increase the speed of the silicone oil fan. That is, the target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air-conditioning, and the speed of the silicone oil fan also matches the heat dissipation requirements of the engine and the vehicle air-conditioning, thereby meeting the heat dissipation requirements of the engine and the vehicle air-conditioning.

[0010] In combination with the first aspect, in some possible implementations, the engine parameter includes an engine water temperature and an engine intake temperature, the air conditioning parameter includes an air conditioning pressure, and determining, based on the engine parameter and the air conditioning parameter, whether the silicone oil fan can meet the heat dissipation requirements of the engine and the vehicle air conditioning at a current speed of the engine of the vehicle includes:

[0011] Determining the heat dissipation requirements of the engine and the vehicle air conditioner of the vehicle based on the engine water temperature, the engine intake temperature and the air conditioning pressure;

[0012] When the engine water temperature is greater than or equal to the first preset temperature, and / or the engine intake temperature is greater than or equal to the second preset temperature, and / or the air-conditioning pressure is greater than or equal to the first preset pressure, it is determined that the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current engine speed.

[0013] Through the above scheme, the engine state is monitored according to the engine parameters. If the heat of the engine is not dissipated, it is judged that the silicone oil fan cannot meet the heat dissipation demand of the engine. The air-conditioning state is monitored according to the state parameters of the vehicle air-conditioning. If the pressure of the vehicle air-conditioning is large, it is judged that the silicone oil fan cannot meet the heat dissipation demand of the vehicle air-conditioning, so as to facilitate the subsequent corresponding measures for the silicone oil fan to dissipate heat for the engine or the vehicle air-conditioning.

[0014] In combination with the first aspect, in some possible implementations, when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, increasing the speed of the engine to a target speed includes:

[0015] In the case where the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air conditioning pressure are obtained, wherein the first preset coefficient is used to indicate the degree of influence of the engine water temperature on the engine speed, the second preset coefficient is used to indicate the degree of influence of the engine intake temperature on the engine speed, and the third preset coefficient is used to indicate the degree of influence of the air conditioning pressure on the engine speed;

[0016] Based on the first preset coefficient, the second preset coefficient and the third preset coefficient, the speed of the engine is increased to a target speed.

[0017] Through the above scheme, since the first preset coefficient can indicate the influence of the engine water temperature on the engine speed, the second preset coefficient can indicate the influence of the engine intake temperature on the engine speed, and the third preset coefficient can indicate the influence of the air conditioning pressure on the engine speed, the engine parameter or air conditioning parameter that has the greatest influence on the engine speed can be selected from the engine water temperature, the engine intake temperature and the air conditioning pressure based on the first preset coefficient, the second preset coefficient and the third preset coefficient. In this case, increasing the engine speed to the target speed can simultaneously meet the heat dissipation requirements of the engine parameters or the air conditioning parameters.

[0018] In combination with the first aspect, in some possible implementations, increasing the speed of the engine to a target speed based on the first preset coefficient, the second preset coefficient, and the third preset coefficient includes at least one of the following:

[0019] In a case where the first preset coefficient is a maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, increasing the speed of the engine to a target speed based on the engine water temperature;

[0020] When the second preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, increasing the speed of the engine to a target speed based on the engine intake temperature;

[0021] In a case where the third preset coefficient is a maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the speed of the engine is increased to a target speed based on the air-conditioning pressure.

[0022] Through the above scheme, for engine parameters or vehicle neutral gear parameters corresponding to different maximum preset coefficients, the engine speed is determined accordingly to avoid failure to meet the maximum heat dissipation demand of the engine or vehicle air conditioner. That is, for engine parameters or vehicle neutral gear parameters corresponding to the maximum preset coefficient, the maximum heat dissipation demand of the engine or vehicle air conditioner can be determined, and based on the maximum heat dissipation demand, the engine speed is increased by a target speed to increase the speed of the silicone oil fan accordingly.

[0023] In conjunction with the first aspect, in some possible implementations, increasing the speed of the engine to a target speed based on the engine water temperature includes:

[0024] When the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the engine water temperature and the duration that the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature.

[0025] Through the above scheme, when the engine water temperature has the greatest impact on the engine speed, the target engine speed is determined based on the engine water temperature, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the engine water temperature.

[0026] In conjunction with the first aspect, in some possible implementations, increasing the speed of the engine to a target speed based on the engine intake temperature includes:

[0027] When the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the engine intake temperature and the duration that the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature is greater than the second preset duration.

[0028] Through the above scheme, when the engine intake temperature has the greatest impact on the engine speed, the target engine speed is determined based on the engine intake temperature, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the engine intake temperature.

[0029] In combination with the first aspect, in some possible implementations, increasing the speed of the engine to a target speed based on the air-conditioning pressure includes:

[0030] When the air-conditioning pressure is greater than or equal to the first preset pressure, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the air-conditioning pressure and the duration for which the air-conditioning pressure is greater than or equal to the first preset pressure is greater than a third preset duration.

[0031] Through the above scheme, when the air-conditioning pressure has the greatest impact on the engine speed, the target speed of the engine is determined based on the air-conditioning pressure, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the air-conditioning pressure.

[0032] In conjunction with the first aspect, in some possible implementations, after the speed of the engine is increased to the target speed, at least one of the following is included:

[0033] When the engine water temperature is lower than the first preset temperature or higher than the third preset temperature, based on the corresponding relationship between the target speed of the engine and the engine water temperature, reducing the speed of the engine to a preset speed;

[0034] When the engine intake temperature is lower than the second preset temperature or higher than the fourth preset temperature, based on the corresponding relationship between the target speed of the engine and the engine intake temperature, reducing the speed of the engine to a preset speed;

[0035] When the air-conditioning pressure is less than the first preset pressure, the speed of the engine is reduced to a preset speed based on the corresponding relationship between the target speed of the engine and the air-conditioning pressure.

[0036] Through the above scheme, after the engine speed is increased to the target speed, the air conditioning pressure is detected to see if it is reduced. If the air conditioning pressure is not reduced, it means that the engine continues to rotate at a higher speed, which will cause the engine to generate a lot of heat, and the silicone oil fan cannot dissipate the heat of the engine. In this case, the engine speed needs to be reduced to a preset speed to allow the engine to dissipate heat naturally.

[0037] In a second aspect, a control device for a silicone oil fan is provided, the device comprising:

[0038] An acquisition module, used for acquiring engine parameters of the engine and air-conditioning parameters of the vehicle air-conditioning when the vehicle is in an idling state;

[0039] A determination module, for determining, based on the engine parameters and the air conditioning parameters, whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioning at a current speed;

[0040] The increasing module is used to increase the engine speed to a target speed to increase the speed of the silicone oil fan when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met. The target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner.

[0041] In a third aspect, a vehicle is provided, comprising a memory and a processor, wherein the memory is used to store executable program codes, and the processor is used to call and run the executable program codes from the memory, so that the vehicle executes the method executed by the control method of the silicone oil fan.

[0042] In a fourth aspect, a computer program product is provided, the computer program product comprising: a computer program code, when the computer program code is run on a computer, the computer executes the method executed by the control method of the silicone oil fan.

[0043] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method executed by the control method of the silicone oil fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of an implementation environment of a control method for a silicone oil fan provided in an embodiment of the present application;

[0045] Figure 2 is a schematic flow chart of a control method for a silicone oil fan provided in an embodiment of the present application;

[0046] Figure 3 is a schematic flow chart of another method for controlling a silicone oil fan provided in an embodiment of the present application;

[0047] Figure 4 It is a structural schematic diagram of a control device for a silicone oil fan provided in an embodiment of the present application;

[0048] Figure 5 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0050] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting 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 one or more of the features.

[0051] As the functions of vehicles gradually increase, the power performance of vehicles is also becoming more and more excellent. In order to extend the service life of vehicles, vehicles need to have powerful heat dissipation functions. The vehicle control unit can calculate the speed of the silicone oil fan according to the vehicle's heat dissipation requirements, and convert it into a duty cycle through logical operations to control the silicone oil fan filling time, so that the silicone oil fan responds quickly, thereby providing good heat dissipation for the vehicle.

[0052] In the related art, the end of the silicone oil fan is directly connected to the front gear train of the engine through a thread, and the speed of the silicone oil fan is affected by the speed of the engine. When the vehicle is idling, the engine and air conditioner of the vehicle are both working and need to dissipate heat, but the speed of the silicone oil fan will decrease as the engine speed decreases, so the silicone oil fan cannot meet the heat dissipation of the engine and air conditioner.

[0053] Based on the above problems, the embodiment of the present application provides a control method for a silicone oil fan, which can obtain the engine parameters of the engine and the air conditioning parameters of the vehicle air conditioner when the vehicle is in an idle state, and determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed based on the engine parameters and the air conditioning parameters. In the case where the heat dissipation requirements of the engine and the air conditioner cannot be met, since the silicone oil fan is connected to the engine, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine, so at the current engine speed, the speed of the silicone oil fan cannot meet the heat dissipation requirements of the engine and the air conditioner. In this case, the speed of the engine is increased to the target speed to increase the speed of the silicone oil fan. That is, the target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner, and the speed of the silicone oil fan also matches the heat dissipation requirements of the engine and the vehicle air conditioner, thereby meeting the heat dissipation requirements of the engine and the vehicle air conditioner.

[0054] Figure 1 It is a schematic diagram of the implementation environment of a control method for a silicone oil fan provided in an embodiment of the present application.

[0055] For example, Figure 1 As shown, the implementation environment includes a vehicle control unit (VCU) 110 , an engine 120 , and a silicone oil fan 130 .

[0056] The vehicle controller 110 is an important control unit of the vehicle, which can obtain relevant data of the vehicle and control the vehicle to perform corresponding operations based on the relevant data, for example, obtain the speed of the engine 120 and determine whether to adjust the speed of the engine 120 based on the speed.

[0057] The engine 120 is used to provide power for the vehicle. The engine 120 can send data to the vehicle controller 110. For example, the engine 120 can send engine parameters to the vehicle controller 110 so that the vehicle controller monitors the status of the engine 120.

[0058] The silicone oil fan 130 is a cooling fan clutch that uses silicone oil as a medium and transmits torque through the shear viscosity of silicone oil, also known as a silicone oil clutch. Viscous silicone oil is sealed inside the silicone oil fan, and torque is transmitted by the shear viscosity of viscous silicone oil. In some embodiments, the silicone oil fan 130 receives a pulse width modulation signal sent by the vehicle controller 110 to adjust the speed of the silicone oil fan 130. The silicone oil fan 130 is connected to the engine 120 through a fan control harness.

[0059] Figure 2 It is a flow chart of a control method of a silicone oil fan provided in an embodiment of the present application.

[0060] For example, Figure 2 As shown, taking the execution subject as a vehicle controller as an example, the method 200 includes steps 201 to 203.

[0061] Step 201, when the vehicle is in an idling state, obtain engine parameters of the engine and air-conditioning parameters of the vehicle air-conditioning.

[0062] It should be understood that the vehicle being in an idle state means that the engine of the vehicle is running at a minimum speed without a load. For example, the minimum speed of the engine is 800 revolutions per minute.

[0063] Among them, the engine is a device that provides power to the vehicle. The vehicle air conditioner is a system in the vehicle used to adjust the temperature, humidity and air quality in the vehicle. The engine parameters of the engine include the engine water temperature and the engine intake temperature. The engine water temperature is the temperature of the engine coolant, and the engine operating status can be monitored based on the engine water temperature. The engine intake temperature is the temperature of the air before the air enters the engine combustion chamber, and the engine intake temperature is used to monitor the fuel efficiency of the engine. The air conditioning parameters of the vehicle air conditioner include the air conditioning pressure. The air conditioning pressure is used to monitor the cooling effect of the air conditioner. In the vehicle air conditioner, the refrigerant of the vehicle air conditioner absorbs heat in the evaporator, and the refrigerant changes from liquid to gas, and then releases heat in the condenser, so that the refrigerant changes from gas to liquid. If the condenser does not dissipate heat well, it will cause too much gas in the condenser, and the air conditioning pressure in the condenser will be too high, then the cooling effect of the vehicle air conditioner will be significantly reduced, so the vehicle air conditioner is monitored based on the air conditioning pressure to see if it is operating normally.

[0064] Step 202, based on the engine parameters and the air conditioning parameters, determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioning at the current speed.

[0065] The silicone oil fan is a cooling component that controls the fan speed by adjusting the amount of silicone oil filled. The viscosity of silicone oil changes with temperature, which enables the silicone oil fan to automatically adjust the fan speed according to the temperature of the engine.

[0066] After detecting the engine parameters, the vehicle controller will control the silicone oil fan to push the piston of the silicone oil fan to move according to the engine's cooling requirements, adjust the amount of oil in the silicone oil fan, and the silicone oil fan will blow air through the radiator to take away the heat in the radiator, thereby reducing the temperature of the engine coolant. The coolant circulates between the engine and the radiator, transferring the engine's heat to the radiator, so that the silicone oil fan can dissipate heat from the engine.

[0067] When the silicone oil fan detects that the temperature of the condenser of the vehicle air conditioner has risen, the vehicle controller will control the silicone oil fan to push the piston of the silicone oil fan to move according to the heat dissipation requirements of the vehicle air conditioner to adjust the oil filling amount of the silicone oil fan. The silicone oil fan blows air through the condenser to take away the heat in the condenser, thereby reducing the temperature of the refrigerant in the vehicle air conditioner. The refrigerant circulates in the vehicle air conditioner, and the silicone oil fan helps the condenser dissipate heat into the air, so that the silicone oil fan dissipates heat for the vehicle air conditioner.

[0068] It should be understood that the engine and the vehicle air conditioner will generate a lot of heat during operation. If the engine and the vehicle air conditioner are not cooled in time, they will overheat, thus affecting the performance and life of the engine. Since the engine water temperature and the engine intake temperature can monitor the operating status of the engine, and the air conditioning pressure can monitor the cooling effect of the air conditioning, it is possible to determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current engine speed based on the engine parameters and the air conditioning parameters.

[0069] Step 203, when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, the engine speed is increased to a target speed to increase the speed of the silicone oil fan, and the target speed is an engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner.

[0070] Among them, the engine and the vehicle air conditioner will generate heat during operation. The engine and the vehicle air conditioner have a heat dissipation requirement. When the speed of the silicone oil fan cannot meet the heat dissipation requirement of the engine and the vehicle air conditioner, the engine speed is increased to an engine speed that matches the heat dissipation requirement of the engine and the vehicle air conditioner, so that the silicone oil fan can meet the heat dissipation requirement of the engine and the vehicle air conditioner.

[0071] It should be understood that the silicone oil fan is connected to the engine, and there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine. When the vehicle is idling, the speed of the engine is at a lower speed. In this case, the speed of the silicone oil fan will be affected by the speed of the engine, and the speed of the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner. In order to avoid affecting the performance of the engine and the cooling effect of the vehicle air conditioner, the engine speed is increased to the target speed to increase the speed of the silicone oil fan.

[0072] The embodiment of the present application provides a control method for a silicone oil fan, which can obtain the engine parameters of the engine and the air conditioning parameters of the vehicle air conditioner when the vehicle is in an idle state, and determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed based on the engine parameters and the air conditioning parameters. In the case where the heat dissipation requirements of the engine and the air conditioner cannot be met, since the silicone oil fan is connected to the engine, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine, so at the current engine speed, the speed of the silicone oil fan cannot meet the heat dissipation requirements of the engine and the air conditioner. In this case, the speed of the engine is increased to the target speed to increase the speed of the silicone oil fan. That is, the target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner, and the speed of the silicone oil fan also matches the heat dissipation requirements of the engine and the vehicle air conditioner, thereby meeting the heat dissipation requirements of the engine and the vehicle air conditioner.

[0073] Figure 3 It is a schematic flow chart of another method for controlling a silicone oil fan provided in an embodiment of the present application.

[0074] It should be noted that the above steps 201-203 are a simple description of a control method for a silicone oil fan provided in an embodiment of the present application. The following will provide a more detailed description of a control method for a silicone oil fan provided in an embodiment of the present application in combination with some examples. Figure 3 Taking the execution subject as the vehicle controller as an example, the method includes the following steps 301 to 304.

[0075] Step 301, when the vehicle is in an idling state, obtain engine parameters of the engine and air-conditioning parameters of the vehicle air-conditioning.

[0076] It should be understood that when the vehicle is idling, the vehicle's engine and air conditioner may generate heat. In order to monitor the operating status of the engine and the air conditioner, the engine parameters of the engine and the air conditioning parameters of the air conditioner are obtained.

[0077] The following describes the contents of obtaining the engine parameters of the engine and the air-conditioning parameters of the vehicle air-conditioner.

[0078] In a possible implementation, the engine parameters are acquired based on engine sensors.

[0079] The engine parameters include the engine water temperature and the engine intake air temperature. If the engine water temperature and the engine intake air temperature are low, the engine does not need to be cooled. Therefore, it can be determined whether to cool the engine based on the engine water temperature and the engine intake air temperature.

[0080] In some embodiments, an engine sensor for detecting the engine water temperature is installed in a coolant pipe of an engine cooling system. The engine sensor is a thermistor with a negative temperature coefficient. As the engine water temperature increases, the resistance value of the thermistor decreases, thereby being able to obtain the engine water temperature.

[0081] In some embodiments, an engine sensor for detecting the engine intake temperature is installed between the air filter and the throttle of the intake system. The engine sensor is a sensor for monitoring temperature. For example, the engine sensor is a thermistor with a negative temperature coefficient. As the engine intake temperature increases, the resistance value of the thermistor decreases, thereby being able to obtain the engine intake temperature.

[0082] In this embodiment, the engine parameters are obtained based on the engine sensors, and the operating status of the engine can be monitored in real time to determine whether to dissipate heat for the engine.

[0083] In a possible implementation, air-conditioning parameters are acquired based on a pressure sensor.

[0084] Among them, the air conditioning parameters include the air conditioning pressure. The pressure sensor is used to monitor the pressure of the vehicle air conditioning. If the silicone oil fan cannot dissipate heat for the vehicle air conditioning, the pressure on the high-pressure side of the vehicle air conditioning will increase. Therefore, the heat dissipation of the vehicle air conditioning can be monitored based on the air conditioning pressure.

[0085] In some embodiments, the pressure sensor is respectively connected to the high-pressure side and low-pressure side interfaces of the vehicle air conditioner to record the pressure value of the vehicle air conditioner.

[0086] In this implementation, the air-conditioning parameters are obtained based on the pressure sensor, so that the operating status of the vehicle air-conditioning can be monitored in real time to monitor the heat dissipation of the vehicle air-conditioning.

[0087] Step 302 , based on the engine parameters and the air conditioning parameters, determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioning at the current speed.

[0088] It should be understood that when the vehicle is idling, the engine and the onboard air conditioner continue to generate heat, so the heat dissipation demand of the engine and the onboard air conditioner is relatively large. However, since the engine is connected to the silicone oil fan, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine. Even if the silicone oil fan is in a fully engaged state, the maximum speed of the silicone oil fan is determined based on the engine speed and the transmission ratio. Among them, the silicone oil fan in a fully engaged state means that all the silicone oil in the oil storage chamber of the silicone oil fan has entered the working chamber. The oil storage chamber is used to store silicone oil, and the working chamber is used to engage the silicone oil clutch based on silicone oil to increase the speed of the silicone oil fan. When the silicone oil fan is in a fully engaged state, the speed of the silicone oil fan is the largest.

[0089] For example, if the transmission ratio between the speed of the silicone oil fan and the speed of the engine is 1.2, the maximum speed of the silicone oil fan is only 1.2 times the engine speed. When the vehicle is idling, even if the heat dissipation demand of the engine and the car air conditioner is large, the maximum speed of the silicone oil fan is very low at the current speed of the engine, and it cannot meet the heat dissipation demand of the engine and the car air conditioner. To avoid the above problems, based on the engine parameters and the air conditioning parameters, determine whether the silicone oil fan of the vehicle's engine can meet the heat dissipation demand of the engine and the car air conditioner at the current speed.

[0090] The following describes how to determine whether the silicone oil fan of the vehicle's engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed based on the engine parameters and the air conditioning parameters.

[0091] It should be understood that since the engine parameters and the air-conditioning parameters can monitor the heat dissipation of the engine and the vehicle air-conditioning, it can be determined whether the heat dissipation requirements of the engine and the vehicle air-conditioning are met based on the engine parameters and the air-conditioning parameters.

[0092] In one possible implementation, the cooling requirements of the vehicle's engine and onboard air conditioner are determined based on the engine water temperature, the engine intake temperature, and the air-conditioning pressure; when the engine water temperature is greater than or equal to a first preset temperature, and / or the engine intake temperature is greater than or equal to a second preset temperature, and / or the air-conditioning pressure is greater than or equal to the first preset pressure, it is determined that the silicone oil fan cannot meet the cooling requirements of the engine and the onboard air conditioner at the current engine speed.

[0093] The first preset temperature is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and this embodiment of the present application does not limit this. For example, the first preset temperature may be 108°C.

[0094] The second preset temperature is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the second preset temperature may be 65°C.

[0095] The first preset pressure is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the first preset pressure may be 1.8 megapascals (Mpa).

[0096] In some embodiments, when the engine water temperature and the engine intake temperature are low, it is determined that the engine heat dissipation is good and the engine heat dissipation demand is small. For example, when the engine water temperature is 100° C. and the engine intake temperature is 50° C., it is determined that the engine heat dissipation demand is small.

[0097] In some embodiments, when the air conditioning pressure is low, it is determined that the heat dissipation of the vehicle air conditioning is good, and therefore it is determined that the heat dissipation demand of the vehicle air conditioning is small. For example, when the air conditioning pressure is 1.2 Mpa, it is determined that the heat dissipation demand of the vehicle air conditioning is small.

[0098] It should be understood that when the silicone oil fan can meet the heat dissipation requirements of the engine and vehicle temperature, the engine water temperature, engine intake temperature and air-conditioning pressure are all low. If the engine water temperature is greater than or equal to the first preset temperature, it means that the engine water temperature is high. If the engine intake temperature is greater than or equal to the second preset temperature, the lower the air density entering the engine combustion chamber, the less oxygen is contained in the air, and the combustion efficiency of the engine will be reduced. If the air-conditioning pressure is high, it means that the silicone oil fan cannot help the vehicle air-conditioning dissipate heat. In this case, since the silicone oil fan is connected to the engine, the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air-conditioning at the current engine speed.

[0099] In this embodiment, when the engine water temperature is greater than or equal to the first preset temperature, and / or the engine intake temperature is greater than or equal to the second preset temperature, and / or the air-conditioning pressure is greater than or equal to the first preset pressure, it is determined that the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air-conditioning at the current speed of the engine, that is, real-time monitoring of the operating status of the engine, thereby facilitating subsequent corresponding measures for the engine to enable the silicone oil fan to meet the heat dissipation requirements of the engine and the vehicle air-conditioning.

[0100] Optionally, after executing the above step 302, the following steps may also be executed.

[0101] In a possible implementation, a heat dissipation requirement of a control unit in a vehicle is obtained; and it is determined whether a silicone oil fan of an engine of the vehicle can meet the heat dissipation requirement of the control unit at a current speed.

[0102] The vehicle is a hybrid vehicle. A hybrid vehicle is a car equipped with both a conventional internal combustion engine (such as a gasoline or diesel engine) and an electric motor. The vehicle includes a hybrid control unit (HCU), which can monitor whether the electric motor or the battery needs to be cooled.

[0103] In some embodiments, the HCU obtains the cooling requirements of the motor or the battery based on a CAN (Controller Area Network) bus.

[0104] In some embodiments, when the motor temperature or the battery temperature of the vehicle is greater than or equal to a temperature threshold, it is determined that the silicone oil fan of the engine cannot meet the heat dissipation demand of the control unit at the current speed.

[0105] For example, if the motor temperature is greater than or equal to 80° C., or the battery temperature is greater than or equal to 40° C., the motor and the battery are easily damaged. In this case, it is determined that the silicone oil fan cannot meet the heat dissipation requirements of the motor or the battery.

[0106] In this implementation, the heat dissipation requirement of the control unit in the vehicle is obtained; it is determined whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirement of the control unit at the current speed. That is, the operating status of each component in the vehicle is monitored in real time, so as to facilitate the subsequent taking of corresponding measures on the engine so that the silicone oil fan can meet the heat dissipation requirement of the control unit.

[0107] Step 303, when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, the engine speed is increased to a target speed to increase the speed of the silicone oil fan, and the target speed is an engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner.

[0108] It should be understood that the silicone oil fan is connected to the engine crankshaft through a transmission belt, and the speed of the engine crankshaft will affect the speed of the silicone oil fan. That is, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine. When the vehicle controller detects that the engine temperature has risen, the vehicle controller will move the piston according to the heat dissipation requirements of the engine, so that the amount of silicone oil filled increases. The speed of the silicone oil fan can be controlled based on the amount of silicone oil filled. When the speed of the silicone oil fan increases, the viscosity of the silicone oil will increase, and the speed of the silicone oil fan will be closer to the engine crankshaft speed. However, when the engine is in an idling state, even if the silicone oil filling amount is filled, the speed of the silicone oil fan will only be closer to the engine speed in the idling state, so only increasing the amount of silicone oil filled to increase the speed of the silicone oil fan still cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner. In this case, it is necessary to increase the engine speed to the target speed to increase the speed of the silicone oil fan.

[0109] The following describes how to increase the engine speed to the target speed when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met.

[0110] It should be understood that if the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner, the engine speed needs to be increased to increase the speed of the silicone oil fan. However, both the engine and the vehicle air conditioner have heat dissipation requirements, and there is a difference between the target speed that matches the heat dissipation requirements of the engine and the target speed that matches the heat dissipation requirements of the vehicle air conditioner. In order to determine the target speed of the engine, it is necessary to determine the degree of influence of the engine water temperature, the engine intake temperature and the air conditioning pressure on the engine speed.

[0111] In a possible implementation, when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air conditioning pressure are obtained; based on the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed.

[0112] Among them, the first preset coefficient is used to represent the influence of engine water temperature on engine speed, the second preset coefficient is used to represent the influence of engine intake temperature on engine speed, and the third preset coefficient is used to represent the influence of air-conditioning pressure on engine speed.

[0113] In some embodiments, the first preset coefficient, the second preset coefficient and the third preset coefficient are compared, and the engine parameter or the air conditioning parameter that has the greatest impact on the engine speed is used as a parameter for determining the target engine speed.

[0114] The first preset coefficient is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and this embodiment of the present application does not limit this. For example, the first preset coefficient may be 2.

[0115] The second preset coefficient is automatically determined by the vehicle controller, or is set by the technician according to the actual situation, and the embodiment of the present application does not limit this. It should be understood that when the vehicle is in an idle state, the engine speed is low, and the engine intake temperature has a small impact on the engine, so the second preset coefficient corresponding to the engine intake temperature can be set to a smaller coefficient. For example, the second preset coefficient can be 1.

[0116] The third preset coefficient is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the third preset coefficient may be 3.

[0117] In this embodiment, since the first preset coefficient can represent the influence of the engine water temperature on the engine speed, the second preset coefficient can represent the influence of the engine intake temperature on the engine speed, and the third preset coefficient can represent the influence of the air-conditioning pressure on the engine speed, the engine parameter or air-conditioning parameter that has the greatest influence on the engine speed can be selected from the engine water temperature, the engine intake temperature and the air-conditioning pressure based on the first preset coefficient, the second preset coefficient and the third preset coefficient.

[0118] In order to explain the above implementation in more detail, the above implementation is explained in several parts below.

[0119] The first part explains how to obtain the first preset coefficient corresponding to the engine water temperature, the second preset coefficient corresponding to the engine intake temperature, and the third preset coefficient corresponding to the air conditioning pressure when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met.

[0120] In some embodiments, a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air conditioning pressure are obtained from a memory of the vehicle.

[0121] For example, the memory of the vehicle may be a non-volatile memory (Flash), which can be programmed and updated online, so that the first preset coefficient, the second preset coefficient, and the third preset coefficient can be adjusted at any time when the vehicle is upgraded, so as to reselect the engine parameter or air conditioning parameter that has the greatest impact on the engine speed based on the first preset coefficient, the second preset coefficient, and the third preset coefficient.

[0122] The second part describes how to increase the engine speed to the target speed based on the first preset coefficient, the second preset coefficient, and the third preset coefficient.

[0123] In a possible implementation manner, when the first preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the engine water temperature.

[0124] It should be understood that when the first preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine water temperature has the greatest impact on the engine, so the heat dissipation demand corresponding to the engine water temperature needs to be taken as the largest heat dissipation demand. That is, the target speed of the engine is determined based on the engine water temperature to increase the speed of the silicone oil fan.

[0125] In some embodiments, when the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the engine target speed and the engine water temperature and the duration that the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature.

[0126] The engine water temperature being greater than or equal to the first preset temperature and less than or equal to the third preset temperature indicates that the engine water temperature is high. To reduce the engine water temperature, it is necessary to determine the target speed of the engine based on the engine water temperature.

[0127] The third preset temperature is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and this embodiment of the present application does not limit this. For example, the third preset temperature may be 118°C.

[0128] The first duration is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the first duration may be 2 seconds (S).

[0129] It should be understood that when the vehicle is in an idling state, the engine continues to generate heat. If the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature for a long period of time, it means that the engine needs a silicone oil fan to dissipate heat at this time to avoid affecting the performance of the engine, so the engine speed needs to be increased to the target speed to increase the speed of the silicone oil fan.

[0130] The corresponding relationship between the target engine speed and the engine water temperature is shown in Table 1 below.

[0131]

[0132] For example, as shown in Table 1 above, when the engine water temperature is 108°C and the duration of the engine water temperature is 2S, the target engine speed is 1100 revolutions per minute (r / min) based on the table above, thereby increasing the engine speed to 1100 r / min.

[0133] In this embodiment, when the first preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the engine water temperature. That is, when the engine water temperature has the greatest influence on the engine speed, the target engine speed is determined based on the engine water temperature, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the engine water temperature.

[0134] In a possible implementation manner, when the second preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the engine intake temperature.

[0135] It should be understood that when the second preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine intake temperature has the greatest impact on the engine, so the heat dissipation demand corresponding to the engine intake temperature needs to be taken as the maximum heat dissipation demand. That is, the target speed of the engine is determined based on the engine intake temperature to increase the speed of the silicone oil fan, thereby reducing the engine intake temperature.

[0136] In some embodiments, when the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the engine target speed and the engine intake temperature and the duration that the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature is greater than the second preset duration.

[0137] The engine intake temperature being greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature indicates that the air density entering the engine combustion chamber is lower, and the oxygen content in the air is also lower, so the combustion efficiency of the engine will be reduced. In order to reduce the engine intake temperature, it is necessary to determine the target engine speed based on the engine intake temperature.

[0138] The fourth preset temperature is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and this embodiment of the present application does not limit this. For example, the fourth preset temperature may be 70°C.

[0139] The second duration is automatically determined by the vehicle controller, or is set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the first duration may be 60S.

[0140] It should be understood that when the vehicle is in an idling state, the lower the density of the air entering the engine combustion chamber, the less oxygen is contained in the air, and the combustion efficiency of the engine will be reduced. If the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature for a long period of time, it means that the engine needs a silicone oil fan to dissipate heat at this time to avoid affecting the performance of the engine, so the engine speed needs to be increased to the target speed to increase the speed of the silicone oil fan.

[0141] The corresponding relationship between the target engine speed and the engine intake temperature is shown in Table 2 below.

[0142]

[0143] For example, as shown in Table 2 above, when the engine intake temperature is 65°C and the duration of the engine intake temperature is 60S, the target engine speed is 1000 r / min based on the table above, thereby increasing the engine speed to 1000 r / min.

[0144] In this embodiment, when the second preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the engine intake temperature. That is, when the engine intake temperature has the greatest influence on the engine speed, the target engine speed is determined based on the engine intake temperature, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the engine intake temperature.

[0145] In a possible implementation manner, when the third preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the air-conditioning pressure.

[0146] It should be understood that when the third preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the air conditioning pressure has the greatest influence on the engine, so the heat dissipation demand corresponding to the air conditioning pressure needs to be taken as the largest heat dissipation demand. That is, the target speed of the engine is determined based on the air conditioning pressure to increase the speed of the silicone oil fan.

[0147] In some embodiments, when the air-conditioning pressure is greater than or equal to a first preset pressure, the engine speed is increased to the target speed based on the corresponding relationship between the engine's target speed and the air-conditioning pressure and the duration that the air-conditioning pressure is greater than or equal to the first preset pressure is greater than a third preset duration.

[0148] The fact that the air conditioning pressure is greater than or equal to the first preset pressure indicates that the condenser of the vehicle air conditioning needs to dissipate heat. In order to reduce the air conditioning pressure, it is necessary to determine the target speed of the engine based on the air conditioning pressure.

[0149] The third duration is automatically determined by the vehicle controller or set by a technician according to actual conditions, and the present application embodiment does not limit this. For example, the third duration may be 30 seconds.

[0150] It should be understood that when the vehicle air conditioner is running, the vehicle air conditioner continuously generates heat. If the air conditioning pressure is greater than or equal to the first preset pressure for a long period of time, it means that the vehicle air conditioner needs a silicone oil fan to dissipate heat at this time to avoid affecting the cooling effect of the vehicle air conditioner. Therefore, the engine speed needs to be increased to the target speed to increase the speed of the silicone oil fan.

[0151] The corresponding relationship between the target engine speed and the air conditioning pressure is shown in Table 3 below.

[0152]

[0153] For example, as shown in Table 3 above, when the air-conditioning pressure is 1.8 MPa and the duration of the air-conditioning pressure is 30 seconds, the target speed of the engine is 1000 r / min based on the table above, thereby increasing the engine speed to 1000 r / min.

[0154] In this embodiment, when the third preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed based on the air conditioning pressure. That is, when the air conditioning pressure has the greatest influence on the engine speed, the target engine speed is determined based on the air conditioning pressure, and the engine speed is increased to the target speed, so that the speed of the silicone oil fan is increased, thereby reducing the air conditioning pressure.

[0155] It should be understood that in order to meet the heat dissipation requirements of the engine and the vehicle air conditioner, after the engine speed is increased to a target speed, the speed of the silicone oil fan is increased based on the target speed of the engine.

[0156] In a possible implementation, the rotation speed of the silicone oil fan is determined based on a transmission ratio between the silicone oil fan and the engine and a target rotation speed of the engine; and the rotation speed of the silicone oil fan is increased.

[0157] The transmission ratio refers to the proportional relationship between the speed of the silicone oil fan and the engine speed. The speed calculation formula of the silicone oil fan is as follows.

[0158] Silicone oil fan speed = engine target speed * transmission ratio

[0159] In some embodiments, the transmission ratio between the silicone oil fan and the engine is affected by the meshing rate of the silicone oil fan. The meshing rate of the silicone oil fan is the contact area between the silicone oil fan and the engine. If the contact area between the silicone oil fan and the engine is small, the speed of the silicone oil fan will be reduced accordingly at the same target speed of the engine.

[0160] It should be understood that the meshing rate of the silicone oil fan can be adjusted by adjusting the design parameters of the silicone oil fan. The embodiment of the present application takes the full meshing of the silicone oil fan as an example to determine the transmission ratio between the silicone oil fan and the engine.

[0161] For example, if the transmission ratio between the silicone oil fan and the engine is 1.2, and the target speed of the engine is 1000 r / min, then the speed of the silicone oil fan is 1200 r / min.

[0162] Under this embodiment, in a possible implementation, the speed of the silicone oil fan is determined based on the transmission ratio between the silicone oil fan and the engine and the target speed of the engine; the speed of the silicone oil fan is increased so that the speed of the silicone oil fan meets the heat dissipation requirements of the engine and the vehicle air conditioner.

[0163] Optionally, before executing the above-mentioned step of increasing the engine speed to the target speed based on the first preset coefficient, the second preset coefficient and the third preset coefficient, the following steps may also be performed.

[0164] In a possible implementation, the gear position of the vehicle is acquired; when the gear position of the vehicle is a parking gear or a neutral gear, the engine speed is increased to a target speed.

[0165] It should be understood that when the vehicle is idling, if the vehicle's current gear is forward gear or reverse gear, the gears and bearings inside the transmission may be under greater pressure, causing transmission wear. Therefore, the vehicle's gear position is obtained to determine whether to increase the engine speed to the target speed.

[0166] In some embodiments, the gear information of the vehicle is obtained based on a transmission sensor.

[0167] In this implementation mode, the gear position of the vehicle is obtained, and when the gear position of the vehicle is the parking gear or the neutral gear, the engine speed is increased to the target speed, which can reduce the wear of the transmission.

[0168] Step 304 , based on the engine parameters and the air conditioning parameters, the engine speed is reduced to a preset speed.

[0169] Among them, the engine parameters include engine water temperature and engine intake temperature, and the air-conditioning parameters include air-conditioning pressure.

[0170] In a possible implementation, when the engine water temperature is lower than the first preset temperature or higher than the third preset temperature, the engine speed is reduced to a preset speed based on a corresponding relationship between the target engine speed and the engine water temperature.

[0171] It should be understood that after the engine speed is increased to the target speed, it is detected whether the engine water temperature has dropped. If the engine water temperature has not dropped, it means that the engine continues to rotate at a higher speed, which will cause the engine to generate a lot of heat, and the silicone oil fan cannot dissipate the heat of the engine. Therefore, it is necessary to reduce the engine speed to a preset speed to allow the engine to dissipate heat naturally.

[0172] In some embodiments, as shown in Table 1, when the engine water temperature is less than 108°C or the engine water temperature is greater than or equal to 118°C, based on the corresponding relationship in Table 1, the engine speed is reduced to 750r / min to allow the engine to dissipate heat naturally.

[0173] In this embodiment, when the engine water temperature is less than the first preset temperature or greater than the third preset temperature, the engine speed is reduced to the preset speed based on the corresponding relationship between the engine target speed and the engine water temperature to avoid the engine generating a large amount of heat at high speed rotation and affecting the engine performance.

[0174] In a possible implementation, when the engine intake temperature is lower than the second preset temperature or higher than the fourth preset temperature, the engine speed is reduced to a preset speed based on a corresponding relationship between the engine target speed and the engine intake temperature.

[0175] It should be understood that after the engine speed is increased to the target speed, the engine intake temperature is detected to see if it has decreased. If the engine intake temperature has not decreased, it means that the engine continues to rotate at a higher speed, which will cause the engine to generate a lot of heat, and the silicone oil fan cannot dissipate the heat of the engine. In this case, the engine speed needs to be reduced to a preset speed to allow the engine to dissipate heat naturally.

[0176] In some embodiments, as shown in Table 2, when the engine intake temperature is less than 65°C or the engine intake temperature is greater than or equal to 75°C, based on the corresponding relationship in Table 2, the engine speed is reduced to 750r / min to allow the engine to dissipate heat naturally.

[0177] In this embodiment, when the engine intake temperature is less than the second preset temperature or greater than the fourth preset temperature, the engine speed is reduced to the preset speed based on the corresponding relationship between the engine target speed and the engine intake temperature to avoid the engine generating a large amount of heat at high speed rotation and affecting the engine performance.

[0178] In a possible implementation, when the air-conditioning pressure is less than the first preset pressure, the engine speed is reduced to a preset speed based on a corresponding relationship between the target engine speed and the air-conditioning pressure.

[0179] It should be understood that after the engine speed is increased to the target speed, the air conditioning pressure is detected to see if it is reduced. If the air conditioning pressure does not decrease, it means that the engine continues to rotate at a higher speed, which will cause the engine to generate a lot of heat, and the silicone oil fan cannot dissipate the heat of the engine. In this case, the engine speed needs to be reduced to a preset speed to allow the engine to dissipate heat naturally.

[0180] In some embodiments, as shown in Table 3, when the air-conditioning pressure is less than 1.8 MPa or the air-conditioning pressure is greater than or equal to 2.2 MPa, based on the corresponding relationship in Table 3, the engine speed is reduced to 750 r / min to allow the engine to dissipate heat naturally.

[0181] In this embodiment, when the air-conditioning pressure is less than the first preset pressure, the engine speed is reduced to a preset speed based on the correspondence between the engine's target speed and the air-conditioning pressure to avoid the engine generating a large amount of heat at high speed rotation and affecting the engine's performance.

[0182] The embodiment of the present application provides a control method for a silicone oil fan, which can obtain the engine parameters of the engine and the air conditioning parameters of the vehicle air conditioner when the vehicle is in an idle state, and determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed based on the engine parameters and the air conditioning parameters. In the case where the heat dissipation requirements of the engine and the air conditioner cannot be met, since the silicone oil fan is connected to the engine, there is a transmission ratio between the speed of the silicone oil fan and the speed of the engine, so at the current engine speed, the speed of the silicone oil fan cannot meet the heat dissipation requirements of the engine and the air conditioner. In this case, the speed of the engine is increased to the target speed to increase the speed of the silicone oil fan. That is, the target speed is the engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner, and the speed of the silicone oil fan also matches the heat dissipation requirements of the engine and the vehicle air conditioner, thereby meeting the heat dissipation requirements of the engine and the vehicle air conditioner. After the target speed of the engine speed is increased, the speed of the engine is reduced to a preset speed based on the engine parameters and the air conditioning parameters. That is, at the target engine speed, the silicone oil fan still cannot meet the heat dissipation requirements of the engine and the car air conditioner. Therefore, in order to prevent the engine from continuously generating a large amount of heat, the engine speed is reduced to a preset speed to allow the engine and the car air conditioner to dissipate heat naturally.

[0183] Figure 4 It is a structural schematic diagram of a control device for a silicone oil fan provided in an embodiment of the present application.

[0184] For example, Figure 4 As shown, the device 400 includes:

[0185] The acquisition module 401 is used to acquire engine parameters of the engine and air conditioning parameters of the vehicle air conditioner when the vehicle is in an idle state;

[0186] A determination module 402 is used to determine whether the silicone oil fan of the vehicle engine can meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed based on the engine parameters and the air conditioner parameters;

[0187] The increasing module 403 is used to increase the engine speed to a target speed to increase the speed of the silicone oil fan when the cooling requirements of the engine and the vehicle air conditioner cannot be met. The target speed is the engine speed that matches the cooling requirements of the engine and the vehicle air conditioner.

[0188] In a possible implementation manner, the device 400 further includes:

[0189] A determination module 402 is used to determine the heat dissipation requirements of the engine and the vehicle air conditioner of the vehicle based on the engine water temperature, the engine intake temperature and the air conditioner pressure;

[0190] Determination module 402 is used to determine that the silicone oil fan of the engine cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed of the engine when the engine water temperature is greater than or equal to a first preset temperature, and / or the engine intake temperature is greater than or equal to a second preset temperature, and / or the air conditioning pressure is greater than or equal to the first preset pressure.

[0191] In a possible implementation manner, the device 400 further includes:

[0192] A preset coefficient acquisition module is used to acquire a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air conditioning pressure when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met. The first preset coefficient is used to indicate the degree of influence of the engine water temperature on the engine speed, the second preset coefficient is used to indicate the degree of influence of the engine intake temperature on the engine speed, and the third preset coefficient is used to indicate the degree of influence of the air conditioning pressure on the engine speed;

[0193] The increasing module 403 is used to increase the speed of the engine to a target speed based on the first preset coefficient, the second preset coefficient and the third preset coefficient.

[0194] In a possible implementation manner, the device 400 further includes:

[0195] An increasing module 403, configured to increase the engine speed to a target speed based on the engine water temperature when the first preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient;

[0196] an increasing module 403, configured to increase the engine speed to a target speed based on the engine intake temperature when the second preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient;

[0197] The increasing module 403 is used to increase the engine speed to the target speed based on the air conditioning pressure when the third preset coefficient is the maximum preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient.

[0198] In a possible implementation manner, the device 400 further includes:

[0199] The increasing module 403 is used to increase the engine speed to the target speed based on the corresponding relationship between the engine target speed and the engine water temperature and the duration of the engine water temperature being greater than or equal to the first preset temperature and less than or equal to the third preset temperature when the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature.

[0200] In a possible implementation manner, the device 400 further includes:

[0201] The increasing module 403 is used to increase the engine speed to the target speed when the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature, based on the corresponding relationship between the engine target speed and the engine intake temperature and the duration of the engine intake temperature being greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature being greater than the second preset time.

[0202] In a possible implementation manner, the device 400 further includes:

[0203] The increasing module 403 is used to increase the engine speed to the target speed when the air-conditioning pressure is greater than or equal to the first preset pressure, based on the corresponding relationship between the engine's target speed and the air-conditioning pressure and the duration of the air-conditioning pressure being greater than or equal to the first preset pressure being greater than a third preset time.

[0204] In a possible implementation manner, the device 400 further includes:

[0205] a reducing module, configured to reduce the engine speed to a preset speed based on a corresponding relationship between the target engine speed and the engine water temperature when the engine water temperature is lower than the first preset temperature or higher than the third preset temperature;

[0206] a reducing module, configured to reduce the engine speed to a preset speed based on a corresponding relationship between the target engine speed and the engine intake temperature when the engine intake temperature is lower than the second preset temperature or higher than the fourth preset temperature;

[0207] The reduction module is used to reduce the engine speed to a preset speed based on the corresponding relationship between the target engine speed and the air-conditioning pressure when the air-conditioning pressure is less than the first preset pressure.

[0208] Figure 5 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0209] For example, Figure 5 As shown, the vehicle 500 includes: a memory 501 and a processor 502, wherein the memory 501 stores an executable program code 503, and the processor 502 is used to call and execute the executable program code 503 to perform a control method for a silicone oil fan.

[0210] In addition, an embodiment of the present application also protects a device, which may include a memory and a processor, wherein the memory stores an executable program code, and the processor is used to call and execute the executable program code to execute a control method for a silicone oil fan provided in an embodiment of the present application.

[0211] In this embodiment, the functional modules of the device can be divided according to the above method example. For example, each functional module can be corresponded, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0212] In the case of dividing each functional module according to each function, the device may further include a reduction module and a preset coefficient acquisition module, etc. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

[0213] It should be understood that the device provided in this embodiment is used to execute the above-mentioned control method of a silicone oil fan, and thus can achieve the same effect as the above-mentioned implementation method.

[0214] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is applied to a vehicle, the processing module may be used to control and manage the actions of the vehicle. The storage module may be used to support the vehicle in executing related program codes, etc.

[0215] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits shown in combination with the contents disclosed in this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module may be a memory.

[0216] In addition, the device provided in the embodiments of the present application may specifically be a chip, a component or a module, and the chip may include a connected processor and a memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a control method for a silicone oil fan provided in the above embodiments.

[0217] This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement a control method for a silicone oil fan provided in the above embodiment.

[0218] This embodiment further provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement a control method for a silicone oil fan provided in the above embodiment.

[0219] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0220] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0221] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0222] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A control method for a silicone oil fan, characterized in that: Applied to a vehicle equipped with a silicone oil fan, the method comprises: When the vehicle is in an idling state, obtaining engine parameters of the engine and air-conditioning parameters of the vehicle air-conditioning; Based on the engine parameters and the air conditioning parameters, determining whether the silicone oil fan can meet the heat dissipation requirements of the engine and the vehicle air conditioning at the current speed of the engine of the vehicle; the engine parameters include the engine water temperature and the engine intake temperature, and the air conditioning parameters include the air conditioning pressure; The determining, based on the engine parameters and the air conditioning parameters, whether the silicone oil fan can meet the heat dissipation requirements of the engine and the vehicle air conditioning at the current speed of the engine of the vehicle includes: Determining heat dissipation requirements of the engine and the vehicle air conditioner of the vehicle based on the engine water temperature, the engine intake temperature, and the air conditioning pressure; When the engine water temperature is greater than or equal to a first preset temperature, and / or the engine intake temperature is greater than or equal to a second preset temperature, and / or the air conditioning pressure is greater than or equal to a first preset pressure, it is determined that the silicone oil fan cannot meet the heat dissipation requirements of the engine and the vehicle air conditioner at the current speed of the engine; In the case where the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, the speed of the engine is increased to a target speed to increase the speed of the silicone oil fan, wherein the target speed is an engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner; In the case where the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, increasing the speed of the engine to a target speed includes: In the case where the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air conditioning pressure are obtained, wherein the first preset coefficient is used to indicate the degree of influence of the engine water temperature on the engine speed, the second preset coefficient is used to indicate the degree of influence of the engine intake temperature on the engine speed, and the third preset coefficient is used to indicate the degree of influence of the air conditioning pressure on the engine speed; The speed of the engine is increased to a target speed based on the first preset coefficient, the second preset coefficient, and the third preset coefficient.

2. The method according to claim 1, characterized in that: The step of increasing the engine speed to a target speed based on the first preset coefficient, the second preset coefficient, and the third preset coefficient comprises at least one of the following: When the first preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, increasing the speed of the engine to a target speed based on the engine water temperature; When the second preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, increasing the speed of the engine to a target speed based on the engine intake air temperature; When the third preset coefficient is the largest preset coefficient among the first preset coefficient, the second preset coefficient and the third preset coefficient, the speed of the engine is increased to a target speed based on the air-conditioning pressure.

3. The method according to claim 2, characterized in that Increasing the engine speed to a target speed based on the engine water temperature includes: When the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the engine water temperature and the duration that the engine water temperature is greater than or equal to the first preset temperature and less than or equal to the third preset temperature.

4. The method according to claim 2, characterized in that: The step of increasing the engine speed to a target speed based on the engine intake temperature includes: When the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the engine intake temperature and the duration that the engine intake temperature is greater than or equal to the second preset temperature and less than or equal to the fourth preset temperature is greater than the second preset duration.

5. The method according to claim 2, characterized in that: Increasing the engine speed to a target speed based on the air-conditioning pressure includes: When the air-conditioning pressure is greater than or equal to the first preset pressure, the engine speed is increased to the target speed based on the corresponding relationship between the target speed of the engine and the air-conditioning pressure and the duration for which the air-conditioning pressure is greater than or equal to the first preset pressure is greater than a third preset duration.

6. The method according to any one of claims 3 to 5, characterized in that: After the engine speed is increased to the target speed, at least one of the following is included: When the engine water temperature is lower than a first preset temperature or higher than a third preset temperature, based on a corresponding relationship between the target speed of the engine and the engine water temperature, reducing the speed of the engine to a preset speed; When the engine intake temperature is lower than a second preset temperature or higher than a fourth preset temperature, based on a correspondence between the target engine speed and the engine intake temperature, reducing the engine speed to a preset speed; When the air-conditioning pressure is less than a first preset pressure, the speed of the engine is reduced to a preset speed based on a corresponding relationship between the target speed of the engine and the air-conditioning pressure.

7. A control device for a silicone oil fan, characterized in that: The device comprises: An acquisition module, used to acquire engine parameters of the engine and air conditioning parameters of the vehicle air conditioner when the vehicle is in an idling state; A determination module, for determining, based on the engine parameters and the air conditioning parameters, whether the silicone oil fan of the vehicle's engine can meet the heat dissipation requirements of the engine and the vehicle-mounted air conditioner at a current speed; the engine parameters include an engine water temperature and an engine intake temperature, and the air conditioning parameters include an air conditioning pressure; based on the engine water temperature, the engine intake temperature and the air conditioning pressure, determining the heat dissipation requirements of the vehicle's engine and the vehicle-mounted air conditioner; when the engine water temperature is greater than or equal to a first preset temperature, and / or the engine intake temperature is greater than or equal to a second preset temperature, and / or the air conditioning pressure is greater than or equal to a first preset pressure, determining that the silicone oil fan of the engine cannot meet the heat dissipation requirements of the engine and the vehicle-mounted air conditioner at a current speed of the engine; An improving module is used to increase the speed of the engine to a target speed so as to increase the speed of the silicone oil fan when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met; the target speed is an engine speed that matches the heat dissipation requirements of the engine and the vehicle air conditioner; when the heat dissipation requirements of the engine and the vehicle air conditioner cannot be met, obtain a first preset coefficient corresponding to the engine water temperature, a second preset coefficient corresponding to the engine intake temperature, and a third preset coefficient corresponding to the air-conditioning pressure, the first preset coefficient is used to indicate the degree of influence of the engine water temperature on the engine speed, the second preset coefficient is used to indicate the degree of influence of the engine intake temperature on the engine speed, and the third preset coefficient is used to indicate the degree of influence of the air-conditioning pressure on the engine speed; based on the first preset coefficient, the second preset coefficient and the third preset coefficient, the engine speed is increased to the target speed.

8. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the vehicle executes the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 6 is implemented.

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