JP2016128279A - Vehicle control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device of a vehicle, capable of preventing such a risk that a fan is brought into an unrotatable state due to adhesion or the like of ice to the fan so that a motor is eroded.SOLUTION: The control device of a vehicle comprises: a capacitor 11 which is used in a vehicle interior air conditioner 20; a fan 5 for blowing air to the capacitor; a motor 7 for driving the fan; air conditioner operation state detecting means 41 which detects an operation state of the vehicle interior air conditioner; outside air temperature detecting means 43 which detects outside air temperatures; first determining means 47 which determines whether or not power should be distributed to the motor on the basis of the operation state of the vehicle interior air conditioner detected by the air conditioner operation state detecting means; and control means 60 which controls the state of power distribution to the motor. The control device, when the first determining means permits power distribution to the motor, executes air conditioner request control by which power is consecutively distributed to the motor if an outside air temperature is equal to a predetermined first temperature or higher, and power is intermittently distributed to the motor if the outside air temperature is less than the first temperature.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a vehicle control device equipped with a radiator that cools a refrigerant used for engine cooling and / or a fan that cools a condenser that cools a refrigerant used for a vehicle interior air conditioner.

  An electric fan is provided in front or rear of a radiator for radiating engine coolant in a vehicle or a condenser (condenser) for a car air conditioner in order to enhance the heat radiation effect. The rotation is controlled by.

  As described in Patent Document 1, the electric fan control device disables the fan motor when the outside air temperature detected by the outside air temperature detecting sensor that detects the outside air temperature is equal to or lower than a predetermined value. The fan motor is operated when the outside air temperature is equal to or higher than a predetermined value.

JP 62-50219 A

  In the electric fan control device described in Patent Document 1, if ice adheres to the fan in a cold region, the motor will generate heat because the fan will not rotate even if the motor is energized and driven when the air conditioner is operating. There is a risk of melting.

  In view of the above circumstances, at least some embodiments of the present invention provide a vehicle control device that can prevent the motor from being melted due to ice being attached to the fan and the fan being unable to rotate. The purpose is to provide.

  A vehicle control apparatus according to some embodiments of the present invention includes a condenser that cools a refrigerant used in a vehicle interior air conditioner, a fan that blows air to the condenser, a motor that drives the fan, and a vehicle interior air conditioner. An air conditioner operating state detecting means for detecting an operating state, an outside air temperature detecting means for detecting an outside air temperature, and whether or not the motor is energized based on the operating state of the vehicle interior air conditioner detected by the air conditioner operating state detecting means. A control device for a vehicle, comprising: a first determination unit for determining; and a control unit for controlling a state of energization of the motor, wherein the control unit permits energization of the motor by the first determination unit. When the outside air temperature detected by the outside temperature detecting means is equal to or higher than a predetermined first temperature, the motor is continuously energized, Configured to perform air-request control for intermittently energizing to the motor when the outside air temperature detected by the outside air temperature detection means is lower than said first temperature.

  If the motor is continuously energized while the fan is frozen, the motor may generate heat and melt. However, according to the vehicle control device, since the motor is intermittently energized when the outside air temperature is lower than the first temperature, the motor heat generation is suppressed even if the motor is frozen, and the motor is melted. The risk of damage can be reduced, and the fan can be driven properly when the fan is not frozen by not stopping the operation, and the air conditioner requirement to properly cool the refrigerant in the condenser must be met Can do. Therefore, it is possible to realize a vehicle control device capable of preventing the motor from being melted due to ice being attached to the fan and the fan being unable to rotate.

In some embodiments,
When the control means executes intermittent energization to the motor as the air conditioner request control, the outside air temperature detected by the outside air temperature detection means is equal to or lower than a predetermined second temperature lower than the first temperature. The energization cycle of the motor is set to be shorter than the energization cycle of the motor when the outside air temperature detected by the outside air temperature detecting means is higher than the second temperature.

  In this case, when the controller performs intermittent energization of the motor, the energization time of one cycle to the motor when the outside air temperature is equal to or lower than a predetermined second temperature lower than the first temperature is shorter. Thus, the risk of motor melting can be reduced more reliably.

In some embodiments,
The first temperature is set to be higher than zero degrees.

  In this case, since there is a possibility of freezing even if the outside air temperature is equal to or higher than zero degrees, by setting the first temperature higher than zero degrees, it is possible to more reliably reduce the risk of motor melting due to freezing.

  In some embodiments, a radiator that cools a refrigerant of an engine mounted on the vehicle, an engine operating state detecting unit that detects an operating state of the engine, and the engine operating state detecting unit that detects the engine operating state detecting unit. Second determination means for determining whether to allow energization of the motor based on an operating state of the engine, and the fan is configured to be able to blow air to the radiator, and the control means When the energization of the motor is permitted by the second determining means, the outside air temperature detected by the outside air temperature detecting means is equal to or higher than a predetermined third temperature lower than the first temperature. The motor is continuously energized, and the motor is intermittently energized when the outside air temperature detected by the outside air temperature detecting means is lower than the third temperature. Configured to perform engine request control.

  Here, since the motor is intermittently energized when the outside air temperature is lower than the third temperature, the motor heat generation is suppressed even if the motor is frozen, and the motor melting risk is reduced. Can do. In addition, by setting the third temperature lower than the first temperature, the intermittent operation is less likely to be executed than in the air conditioner request control. By the way, although there is a possibility that it will freeze even if the outside air temperature is higher than the third temperature, if it is operated intermittently when it is not frozen, cooling of the radiator will be obstructed unnecessarily, and it will not meet the engine requirements and will overheat. There is a risk of it. Therefore, when operating the fan in response to an engine request, if the outside air temperature is equal to or higher than the third temperature, the motor can be energized continuously to ensure reliable cooling when it is not frozen. If the temperature is lower than the third temperature, the risk of motor damage can be reduced by intermittent operation.

In some embodiments,
The control means is configured to set the energization cycle to the motor to be shorter as the outside air temperature detected by the outside air temperature detection means is lower, when intermittent energization to the motor is performed as the engine request control. Is done.

  Here, the lower the outside air temperature, the higher the risk of freezing. Therefore, the lower the outside air temperature, the shorter the energization cycle of the motor, so that the motor melting risk can be more reliably reduced.

In some embodiments,
The control means is configured to execute the engine request control when energization of the motor is permitted by the first determination means and the second determination means.

  That is, when the air conditioner request control and the engine request control overlap, the engine request control has priority. For this reason, it is possible to more reliably suppress engine overheating when the fan is not frozen.

  A vehicle control apparatus according to some embodiments of the present invention includes a radiator that cools a refrigerant of an engine mounted on the vehicle, a fan that blows air to the radiator, a motor that drives the fan, and an operation of the engine Engine operating state detecting means for detecting the state, outside air temperature detecting means for detecting the outside air temperature, and whether or not the motor is energized based on the operating state of the engine detected by the engine operating state detecting means. A control unit for controlling the energization state of the motor, wherein the control unit is permitted to energize the motor by the second determination unit. When the outside air temperature detected by the outside air temperature detecting means is not less than a predetermined third temperature, the motor is continuously energized to detect the outside air temperature. Configured when the outside air temperature detected by the step is less than the third temperature executes the requested engine control for intermittently energizing the said motor.

  If the motor is continuously energized while the fan is frozen, the motor may generate heat and melt. However, according to the vehicle control apparatus, since the motor is intermittently energized when the outside air temperature is lower than the third temperature, the motor is prevented from generating heat even if it is frozen, and the motor is melted. The risk of damage can be reduced, and by not stopping the operation, the fan can be driven properly when the fan is not frozen, and the engine requirements for properly cooling the refrigerant in the radiator are met. Can do. Therefore, it is possible to realize a vehicle control device capable of preventing the motor from being melted due to ice being attached to the fan and the fan being unable to rotate.

In some embodiments,
The control means is configured to set the energization cycle to the motor to be shorter as the outside air temperature detected by the outside air temperature detection means is lower, when intermittent energization to the motor is performed as the engine request control. Is done.

  Here, the lower the outside air temperature, the higher the risk of freezing. Therefore, the lower the outside air temperature, the shorter the energization cycle of the motor, so that the motor melting risk can be more reliably reduced.

  According to at least some embodiments of the present invention, it is possible to provide a vehicle control device capable of preventing the motor from being melted due to ice being attached to the fan and the fan being unable to rotate.

It is a schematic explanatory drawing in the planar view of the vehicle front part provided with the control apparatus of the vehicle which is one Embodiment of this invention. It is the table | surface which showed the operating time of the fan corresponding to the external temperature at the time of an air-conditioner request | requirement. It is the table | surface which showed the operating time of the fan corresponding to the outside temperature at the time of an engine request | requirement. It is the flowchart which described the control content which controls the action | operation of the motor of the fan by a control means. It is a time chart which described control of a fan motor.

  Embodiments of a vehicle control apparatus according to the present invention will be described below with reference to FIGS. It should be noted that the materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention, but are merely illustrative examples. In the present embodiment, a case where a vehicle control device is provided in the engine room of the vehicle will be described as an example.

  FIG. 1 is a schematic explanatory diagram in a plan view of a front portion of a vehicle provided with a vehicle control apparatus according to an embodiment of the present invention. The vehicle control device of the present embodiment relates to a control device that controls the operation of a motor that rotates a fan.

  As shown in FIG. 1, an engine 3, a fan 5 disposed in front of the engine 3, and a motor 7 that drives the fan 5 are disposed in the engine room 1. A radiator 9 is disposed in front of the fan 5, and a condenser 11 (condenser) is disposed in front of the radiator 9. A front grill (not shown) is disposed in front of the condenser 11 so that outside air can flow into the engine room 1 when the vehicle is running. On both sides in the width direction of the fan 5, the radiator 9, and the condenser 11, air guides 13 that guide outside air that has flowed into the engine room 1 to the engine 3 side are provided. The capacitor 11 constitutes a part of the air conditioner 20 that air-conditions the interior 15 of the vehicle. Details of the air conditioner 20 will be described later.

  The control device 40 includes a first determination unit 47 that determines whether the motor 7 can be energized based on the operation state of the air conditioner 20 detected by the air conditioner operation state detection unit 41, and the engine detected by the engine operation state detection unit 51. 3, a second determination unit 55 that determines whether or not to allow energization of the motor 7 based on the operation state of 3, and a controller 60 (control means) that controls the energization state of the motor 7.

  The condenser 11 cools the refrigerant used for the air conditioner 20. An expansion valve 23 is connected to the downstream side of the condenser 11 via a refrigerant flow path 21a, and an evaporator 25 (evaporator) is connected to the downstream side of the expansion valve 23 via a refrigerant flow path 21b. A compressor 27 is connected to the downstream side of the container via a refrigerant flow path 21c. The condenser 11 is connected to the downstream side of the compressor 27 via a refrigerant flow path 21d. The condenser 11, the expansion valve 23, the evaporator 25, and the compressor 27 constitute a circulation path through the refrigerant flow paths 21a, 21b, 21c, and 21d.

  The refrigerant is compressed by the compressor 27 and then cooled by the condenser 11 to be liquefied. The liquefied refrigerant is adiabatically expanded by the expansion valve 23 and then is exchanged with the air in the passenger compartment 15 by the evaporator 25. The air that has obtained cold heat from the refrigerant (heat is taken away by the refrigerant) is sent into the passenger compartment by a blower fan (not shown).

  The motor 7 has a fan 5 attached to its rotating shaft 7a, and rotates the fan 5 by driving the motor 7, so that the outside air sucked from the front of the vehicle flows backward, and the condenser 11, the radiator 9, and the engine 3 are rotated. Cool down. The rotation of the motor 7 is controlled by a controller 60 described later.

  The air conditioner operating state detecting means 41 is a sensor that detects whether or not the pressure of the refrigerant discharged from the compressor 27 exceeds a predetermined value. The air conditioner operating state detecting means 41 is provided in the refrigerant flow path 21 d that connects the compressor 27 and the condenser 11. If the pressure of the refrigerant discharged from the compressor 27 is too high, the cooling of the refrigerant in the condenser 11 is insufficient, and the cooling capacity for cooling the air in the passenger compartment 15 may be insufficient. For this reason, a value slightly smaller than the upper limit value in the refrigerant pressure range in which there is no possibility of insufficient cooling capacity is set as the predetermined value. The detection signal of the air conditioner operating state detection means 41 is sent to the first determination unit 47. The air conditioner operating state detecting means 41 may be a sensor that detects whether or not the temperature of the refrigerant gas discharged from the evaporator 25 (evaporator) exceeds a predetermined value, and the pressure of the refrigerant discharged from the compressor 27 is determined. It may be at least one of the sensors to be detected.

  The outside air temperature detection means 43 is a sensor that detects the temperature of the outside air, and in this embodiment, is disposed at a position ahead of the front surface 11a on one side in the width direction of the capacitor 11. A detection signal from the outside air temperature detection means 43 is sent to the controller 60.

  The first determination unit 47 determines whether or not the motor 7 can be energized based on the operation state of the air conditioner 20 detected by the air conditioner operation state detection unit 41. That is, when it is detected that the refrigerant pressure detected by the air conditioner operating state detecting means 41 exceeds a predetermined value, the first determining unit 47 determines that the motor 7 is energized and detects the air conditioner operating state. If it is detected that the refrigerant pressure detected by the means 41 does not exceed the predetermined value, it is determined that the motor 7 is not allowed to be energized. The determination result of the first determination unit 47 is sent to the controller 60.

The engine operating state detection unit 51 is a unit that detects the operating state of the engine 3, and specifically, a sensor that detects the temperature of cooling water that cools the engine 3. The engine operating state detection means 51 may be a sensor that detects a temperature correlated with the temperature of the engine 3 such as an engine oil temperature or an intake air temperature.
The second determination unit 55 determines whether to permit energization of the motor 7 based on the operation state of the engine 3 detected by the engine operation state detection unit 51. Specifically, the second determination unit 55 energizes the motor 7 when it is detected that the temperature of the cooling water detected by the engine operating state detection means 51 exceeds a predetermined value (for example, 80 ° C.). Is determined, and when the temperature of the cooling water detected by the engine operating state detecting means 51 does not exceed a predetermined value (for example, 80 ° C.), it is determined that energization of the motor 7 is not permitted. The determination result of the second determination unit 55 is sent to the controller 60.

  When the first determination unit 47 permits energization of the motor 7, the controller 60 determines that the outside air temperature detected by the outside air temperature detection means 43 is equal to or higher than a predetermined first temperature (for example, 15 ° C.). The motor 7 is continuously energized, and when the outside air temperature detected by the outside air temperature detecting means 43 is lower than the first temperature (for example, 15 ° C.), the air conditioner request control for intermittently energizing the motor 7 is executed. .

  Specifically, as shown in FIGS. 1 and 2, when the outside air temperature becomes 20 ° C. or higher, the controller 60 performs a normal operation of continuously energizing the motor 7, and when the outside air temperature becomes 15 ° C. or lower, the controller 60 60 performs an intermittent operation in which the motor 7 is energized intermittently. In addition, in FIG. 2, since the temperature division for every 5 degreeC is shown, you may include in the range below 15 degreeC or 20 degreeC or more about the range exceeding 15 degreeC below 20 degreeC. The same applies to other sections.

  In addition, when the controller 60 executes intermittent energization to the motor 7 as the air conditioner request control, the outside air temperature detected by the outside air temperature detecting means 43 is lower than a first temperature (for example, 15 ° C.). The energization cycle of the motor 7 when the temperature is equal to or lower than 2 temperatures (for example, 0 ° C.) is set to the motor 7 when the outside air temperature detected by the outside temperature detecting means 43 is higher than the second temperature (for example, 0 ° C.). Set shorter than the energization cycle.

  Further, as shown in FIGS. 1 and 3, the controller 60 determines that the outside air temperature detected by the outside air temperature detecting means 43 is the first temperature (for example, when the energization of the motor 7 is permitted by the second determination unit 55. , 15 ° C.), when the temperature is equal to or higher than a predetermined third temperature (for example, 0 ° C.), the motor 7 is continuously energized, and the outside temperature detected by the outside temperature detecting means 43 is the third temperature (for example, , 0 ° C.), engine request control for intermittently energizing the motor 7 is executed.

  Specifically, when the outside air temperature becomes 0 ° C. or more, the controller 60 performs a normal operation of continuously energizing the motor 7, and when the outside air temperature becomes −5 ° C. or less, the controller 60 intermittently energizes the motor 7. Execute intermittent operation.

  The controller 60 executes engine request control when the first determination unit 47 and the second determination unit 55 permit energization of the motor 7. That is, when the air conditioner request control and the engine request control overlap, the engine request control has priority.

Next, the operation of the vehicle control device 40 will be described with reference to FIGS. Note that the time chart of FIG. 5 describes the control state of the motor 7 of the fan 5 when the cooling fan is not frozen. First, after the engine 3 is started at time t ₀ , when the air conditioner 20 is turned on at time t ₁ , the refrigerant becomes flowable, and the compressor 27 of the air conditioner 20 is activated when the operation condition of the compressor 27 is established, and the refrigerant The pressure increases. Then, when the refrigerant pressure by the air conditioner operation state detecting means 41 at time t ₂ is detected as exceeding a predetermined value, the first determination unit 47 flags determines performed by energization permission to allow the power supply to the motor 7 Set (motor energization permission flag).

When it is confirmed that the motor energization permission flag is set, the controller 60 reads the outside air temperature detected by the outside air temperature detecting means 43 and executes the air conditioner request control based on the map shown in FIG. Since the outside air temperature at time t ₂ is less than the second temperature (0 ° C.), the controller 60, the energization period of the motor 7 is the maximum operating time 5 sec, is set to the conduction period of downtime 5 sec, The fan 5 is intermittently operated until the motor energization permission flag is lowered. When the refrigerant pressure by the air conditioner operation state detecting means 41 at time t ₃ is detected to have fallen below a predetermined value, the first determination unit 47 decreases the motor energization permission flag, the controller 60 stops the air conditioner requests control.

In _{t 5} from the time _{t 4,} the controller 60, as is the case from the time _{t 2} of _{t 3} to perform air conditioning request control. However, since the outside air temperature at this time is higher than the second temperature (0 ° C.) and lower than the first temperature, a longer energization cycle is selected than when the outside air temperature is equal to or lower than the second temperature (0 ° C.). That is, the controller 60 may intermittently operating the fan 5 in a long period as compared with the case from the time t ₂ of t _3.

  Here, if energization to the motor 7 is continuously performed while the fan 5 is frozen, the motor 7 may generate heat and melt, but the outside air temperature is lower than the first temperature (15 ° C.). In this case, since the motor 7 is energized intermittently, even if the fan 5 is frozen, the heat generation of the motor 7 can be suppressed and the risk of melting damage can be reduced. By not stopping, the fan 5 can be driven appropriately when it is not frozen, and the air conditioner requirement can be satisfied.

At the time _{t 6 t 7,} the controller 60, as in the case from time _{t 4} of _{t 5} to perform the air conditioning request control. Here, when the temperature of the cooling water (engine water temperature) exceeds a predetermined temperature (for example, 80 ° C.) at time t ₇ , the controller 60 executes engine request control. That is, since the outside air temperature at time t ₇ is equal to or higher than the third temperature (0 ° C.), the controller 60 continuously energizes the motor 7 to continuously operate the fan 5.

  When it is detected by the engine operating state detection means 51 that the temperature of the cooling water (engine water temperature) has become lower than a predetermined temperature (for example, 70 ° C.), the first determination unit 47 lowers the motor energization permission flag, and the controller 60 stops engine demand control.

In _{t 11} from the time _{t 10,} the controller 60, as is the case from the time _{t 7} of _{t 9} executes engine demand control. When the air conditioner operating state detection means 41 detects that the temperature of the cooling water (engine water temperature) has become lower than a predetermined temperature (for example, 70 ° C.), the first determination unit 47 lowers the motor energization permission flag, and the controller 60 stops engine demand control.

In t ₁₄ from the time t _13, the temperature of the cooling water by an engine operating condition detecting means 51 (engine coolant temperature) is a predetermined temperature (e.g., 80 ° C.) is detected does not exceed the, refrigerant pressure by air conditioner operation state detecting means 41 When it is detected that the predetermined value is exceeded, the controller 60 executes air conditioner request control. Since the outside air temperature at time t ₁₃ is the first temperature (15 ° C.) or less, the controller 60 is continuously energized to the motor 7. When the refrigerant pressure by the air conditioner operation state detecting means 41 at time t ₁₄ is detected to have fallen below a predetermined value, the first determination unit 47 decreases the motor energization permission flag, the controller 60 stops the power supply to the motor 7 .

  Next, the operation of the vehicle control device 40 will be described with reference to the flowchart of FIG. First, it is determined whether or not the temperature of the cooling water (engine water temperature) detected by the engine operating state detection means 51 exceeds a predetermined temperature (for example, 80 ° C.) (step 100). When the temperature of the cooling water (engine water temperature) exceeds a predetermined temperature (for example, 80 ° C.), engine request control is executed (step 101). In this engine request control, the energization cycle of the motor 7 shown in FIG. 3 is set according to the temperature detected by the outside air temperature detection means 43.

  Then, it is determined whether or not the temperature of the cooling water (engine water temperature) exceeds a predetermined temperature (for example, 70 ° C.) (step 102). When the temperature of the cooling water (engine water temperature) does not exceed a predetermined temperature (for example, 70 ° C.), the engine request control is stopped (step 103), and the temperature of the cooling water (engine water temperature) is set to a predetermined temperature (for example, If it exceeds 70 ° C., engine request control is continuously executed (step 101).

  On the other hand, when it is determined in step 100 that the temperature of the cooling water (engine water temperature) does not exceed a predetermined temperature (for example, 80 ° C.), the refrigerant pressure of the compressor 27 detected by the air conditioner operating state detection means 41 is predetermined. It is determined whether or not the value is exceeded (step 104).

  When the refrigerant pressure of the compressor 27 exceeds a predetermined value, air conditioner request control is executed (step 105). In the air conditioner request control, the energization cycle of the motor 7 shown in FIG. 2 is set according to the temperature detected by the outside air temperature detecting means 43.

Then, it is determined whether or not the refrigerant pressure of the compressor 27 exceeds a predetermined value (step 106). If the refrigerant pressure of the compressor 27 does not exceed the predetermined value, the air conditioner request control is stopped (step 107).
On the other hand, when the refrigerant pressure of the compressor 27 exceeds a predetermined value, it is determined again whether or not the temperature of the cooling water (engine water temperature) exceeds a predetermined temperature (for example, 80 ° C.) (step 108). . When the temperature of the cooling water (engine water temperature) exceeds a predetermined temperature (for example, 80 ° C.), the air conditioner request control is stopped (step 109), and the engine request control is executed (step 101). On the other hand, if it is determined in step 108 that the temperature of the cooling water (engine water temperature) does not exceed a predetermined temperature (for example, 80 ° C.), the air conditioner request control is continued (step 105).

  As described above, when the outside air temperature is lower than the second temperature (0 ° C.), the motor 7 is energized intermittently, so that the heat generation of the motor 7 is suppressed even if the fan 5 is frozen. This can reduce the risk of melting of the motor 7. Further, by intermittently energizing the motor 7, the operation of the motor 7 does not stop, so that the fan 5 can be appropriately driven when the fan 5 is not frozen, and the refrigerant is appropriately supplied in the condenser 11. It can meet the air conditioner requirement for cooling. Therefore, it is possible to realize a vehicle control device that can prevent the motor 7 from being melted due to ice being attached to the fan 5 and the fan 5 being unable to rotate.

  Further, since the fan 5 may be frozen even if the outside air temperature is equal to or higher than zero degrees, in the present embodiment, when the fan 5 is driven by a request from the air conditioner 20, the outside air temperature is the first temperature (15 If it is lower than (° C.), the motor 7 is energized intermittently. Thereby, the risk of melting damage of the motor 7 can be reduced more reliably.

  On the other hand, when the fan 5 is driven in response to a request from the engine 3, the energization of the motor 7 is intermittently performed only when the outside air temperature is lower than the third temperature (0 ° C.) lower than the first temperature. I did it. Here, as described above, there is a possibility that the fan 5 is frozen even when the outside air temperature is equal to or higher than 0 ° C. However, if the intermittent operation is performed in a state where the fan 5 is not frozen, cooling of the radiator 9 is unnecessarily prevented. There is a risk of overheating because engine requirements cannot be met. Therefore, when the fan 5 is operated according to the engine request, if the outside air temperature is equal to or higher than the third temperature (0 ° C.), the motor 7 is continuously energized to reliably cool the radiator 9 when it is not frozen. If the temperature is lower than the third temperature at which the risk of freezing is high, the risk of melting of the motor 7 can be reduced by intermittent operation.

In addition, when intermittent energization to the motor 7 is executed, the energization cycle to the motor 7 is set to be shorter as the outside air temperature is lower, so that the risk of motor melting damage can be more reliably reduced. it can.
Further, when the air conditioner request control and the engine request control overlap, the engine request control is executed with priority, so that the radiator 9 is reliably cooled when the fan 7 is not frozen, 3 overheating can be more reliably suppressed.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the object of the present invention.

DESCRIPTION OF SYMBOLS 1 Engine room 3 Engine 5 Fan 7 Motor 7a Rotating shaft 11 Condenser 13 Air guide 15 Car compartment 20 Air conditioner 21a, 21b, 21c, 21d Refrigerant flow path 23 Expansion valve 25 Evaporator 27 Compressor 40 Control apparatus 41 Air conditioner operation state detection means 43 Outside air Temperature detection means 47 First determination unit (first determination means)
51 Engine Operating State Detection Unit 55 Second Determination Unit (Second Determination Unit)
60 controller (control means)

Claims (8)

A condenser for cooling the refrigerant used in the vehicle air conditioner;
A fan for blowing air to the capacitor;
A motor for driving the fan;
An air conditioner operating state detecting means for detecting an operating state of the vehicle interior air conditioner;
Outside temperature detecting means for detecting outside temperature;
First determining means for determining whether the motor is energized based on the operating state of the vehicle interior air conditioner detected by the air conditioner operating state detecting means;
A control means for controlling the energization state of the motor, and a vehicle control device comprising:
The control means includes
When energization of the motor is permitted by the first determination means, when the outside air temperature detected by the outside air temperature detection means is equal to or higher than a predetermined first temperature, the motor is continuously energized, An air conditioner request control for intermittently energizing the motor when the outside air temperature detected by the outside air temperature detecting means is lower than the first temperature. When the control means executes intermittent energization to the motor as the air conditioner request control, the outside air temperature detected by the outside air temperature detection means is equal to or lower than a predetermined second temperature lower than the first temperature. The energization cycle of the motor is set shorter than the energization cycle of the motor when the outside air temperature detected by the outside air temperature detecting means is higher than the second temperature. The vehicle control device described. The vehicle control device according to claim 1, wherein the first temperature is higher than zero degrees. A radiator for cooling a refrigerant of an engine mounted on the vehicle;
Engine operating state detecting means for detecting the operating state of the engine;
Second determination means for determining whether to allow energization of the motor based on the operating state of the engine detected by the engine operating state detection means,
The fan is configured to be able to blow air to the radiator,
The control means, when energization to the motor is permitted by the second determination means, the outside temperature detected by the outside temperature detection means is equal to or higher than a predetermined third temperature lower than the first temperature The engine request control is performed such that the motor is continuously energized and the motor is intermittently energized when the outside air temperature detected by the outside air temperature detecting means is lower than the third temperature. The vehicle control device according to any one of claims 1 to 3. In the case of intermittently energizing the motor as the engine request control, the control means sets the energization cycle to the motor to be shorter as the outside air temperature detected by the outside air temperature detecting means is lower. The vehicle control device according to claim 4. 6. The vehicle according to claim 4, wherein the control unit executes the engine request control when energization of the motor is permitted by the first determination unit and the second determination unit. 7. Control device. A radiator for cooling the refrigerant of the engine mounted on the vehicle;
A fan for blowing air to the radiator;
A motor for driving the fan;
Engine operating state detecting means for detecting the operating state of the engine;
Outside temperature detecting means for detecting outside temperature;
Second determination means for determining whether the motor is energized based on the engine operating state detected by the engine operating state detecting means;
A control means for controlling the energization state of the motor, and a vehicle control device comprising:
When the outside air temperature detected by the outside air temperature detecting means is equal to or higher than a predetermined third temperature when energization of the motor is permitted by the second determining means, the control means continuously applies to the motor. The vehicle control apparatus is configured to execute engine request control for intermittently energizing the motor when the outside air temperature detected by the outside temperature detecting means is lower than the third temperature. In the case of intermittently energizing the motor as the engine request control, the control means sets the energization cycle to the motor to be shorter as the outside air temperature detected by the outside air temperature detecting means is lower. The vehicle control device according to claim 7.

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