JP6503740B2 - Vehicle control device - Google Patents

Description

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

  In order to enhance the heat radiation effect of a radiator for radiating engine coolant water of a vehicle and a condenser (condenser) for car air conditioner, an electric fan is provided on the front or rear side of these, and this electric fan is a controller The rotation is controlled by

  As described in Patent Document 1, the controller for the electric fan deactivates the fan motor when the outside air temperature detected by the outside air temperature detection sensor for detecting the outside air temperature is equal to or less than a predetermined value, The fan motor is configured to operate when the outside air temperature is equal to or higher than a predetermined value.

Japanese Patent Application Laid-Open No. 62-50219

  In the control device for an electric fan described in Patent Document 1, when ice adheres to the fan in a cold area, the motor does not rotate even if it is attempted to energize and drive the motor at the time of operation of the air conditioner. There is a risk of melting.

  In view of the above-described circumstances, at least some embodiments of the present invention control a vehicle that can prevent the possibility that the motor may be melted due to ice adhering to the fan and the like and the fan can not rotate. Intended to be provided.

  A control device for a vehicle according to some embodiments of the present invention includes a condenser for cooling a refrigerant used in a cabin air conditioner, a fan for blowing air to the condenser, a motor for driving the fan, and the cabin air conditioner. Whether the motor can be energized or not is determined based on the operating condition of the vehicle air conditioner detected by the air conditioner operating condition detecting unit detecting the operating condition, the outside air temperature detecting unit detecting the outside air temperature, and the air conditioner operating condition detecting unit A control device for a vehicle comprising: a first determination means for determining, and a control means for controlling an energization state of the motor, wherein the control means permits the energization of the motor by the first determination means. When the outside air temperature detected by the outside air 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.

  Here, if the motor is continuously energized while the fan is frozen, the motor may generate heat and melt away. However, according to the control device of the above-mentioned vehicle, when the outside air temperature is lower than the first temperature, the motor is intermittently energized, so even if it is frozen, the heat generation of the motor is suppressed and the solution is melted. The risk of loss can be reduced, and by not stopping the operation, the fan can be properly driven when the fan is not frozen, and the air conditioner requirement for properly cooling the refrigerant in the condenser can be satisfied. Can. Therefore, it is possible to realize a control device of a vehicle capable of preventing a possibility that the motor may be melted due to ice adhering to the fan or the like and the fan can not be rotated.

Also, 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 less than or equal to a predetermined second temperature lower than the first temperature. The energization cycle to the motor is set to be shorter than the energization cycle to the motor when the outside air temperature detected by the outside air temperature detection means is higher than the second temperature.

  In this case, when the control means executes the intermittent energization to the motor, the energization time of one cycle to the motor when the outside air temperature is lower than the first temperature and equal to or lower than the predetermined second temperature becomes shorter. Therefore, it is possible to more reliably reduce the risk of motor breakage.

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

  In this case, since there is a possibility that the outside air temperature may be frozen even when the temperature is above zero, setting the first temperature higher than zero can more reliably reduce the risk of motor damage due to the freezing.

  Moreover, in some embodiments, the radiator detected by the engine operating state detecting unit detects an operating state of the engine, the radiator cooling the refrigerant of the engine mounted on the vehicle, the engine operating state detecting unit detecting the operating state of the engine, and And a second determination unit that determines whether or not to permit energization of the motor based on an operating state of an engine, and the fan is configured to be able to blow air to the radiator, the control unit When the second judging means permits the energization of the motor, 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 less 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 heat generation of the motor is suppressed even if it is frozen, thereby reducing the risk of motor damage. Can. In addition, setting the third temperature lower than the first temperature makes it more difficult for the intermittent operation to be performed than the air conditioner request control. By the way, there is a possibility that the outside air temperature may freeze even if it is higher than the third temperature, but if it is intermittently operated in the non-freezing state, cooling of the radiator is unnecessarily interrupted and engine requirements can not be met. There is a risk of Therefore, when operating the fan according to the engine demand, if the outside air temperature is higher than or equal to the third temperature, the motor can be continuously energized to energize the motor, thereby ensuring reliable cooling when not frozen and freezing If the temperature is lower than the high third temperature, intermittent operation can reduce the risk of motor erosion.

Also, 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 becomes lower, when executing the intermittent energization to the motor as the engine request control. Be done.

  Here, since the lower the outside air temperature, the higher the freezing risk, the lower the outside air temperature, the shorter the current application period to the motor, so that the melting risk of the motor can be more reliably reduced.

Also, 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 is prioritized. Therefore, engine overheating in the case where the fan is not frozen can be suppressed more reliably.

  A control device for a vehicle according to some embodiments of the present invention includes a radiator for cooling a refrigerant of an engine mounted on the vehicle, a fan for blowing air to the radiator, a motor for driving the fan, and an operation of the engine It is determined whether or not the motor can be energized based on the operating state of the engine detected by the engine operating state detecting means detecting the state, the outside air temperature detecting means detecting the outside air temperature, and the engine operating state detecting means It is a control device of a vehicle provided with two judgment means and a control means which controls the energization state to said motor, and when said control means permits the energization to said motor by said second judgment means. If the outside air temperature detected by the outside air temperature detecting means is equal to or higher 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.

  Here, if the motor is continuously energized while the fan is frozen, the motor may generate heat and melt away. However, according to the control device of the above-mentioned vehicle, when the outside air temperature is lower than the third temperature, the motor is intermittently energized, so even if it is frozen, the heat generation of the motor is suppressed and the solution is melted. It is possible to reduce the risk of damage and to stop the operation so that the fan can be properly driven when the fan is not frozen, and the engine requirement to properly cool the refrigerant in the radiator Can. Therefore, it is possible to realize a control device of a vehicle capable of preventing a possibility that the motor may be melted due to ice adhering to the fan or the like and the fan can not be rotated.

Also, 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 becomes lower, when executing the intermittent energization to the motor as the engine request control. Be done.

  Here, since the lower the outside air temperature, the higher the freezing risk, the lower the outside air temperature, the shorter the current application period to the motor, so that the melting risk of the motor can be more reliably reduced.

  According to at least some embodiments of the present invention, it is possible to provide a control device of a vehicle capable of preventing a possibility that the motor may be melted due to ice adhering to the fan or the like and the fan can not rotate.

BRIEF DESCRIPTION OF THE DRAWINGS 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 a table | surface which showed the operating time of the fan corresponding to the external temperature at the time of air-conditioner request | requirement. It is a table showing the operating time of the fan corresponding to the outside air temperature at the time of engine demand. It is a 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.

  Hereinafter, an embodiment of a control device for a vehicle according to the present invention will be described with reference to FIGS. 1 to 5 according to the attached drawings. In addition, the material of the component described in this embodiment, the shape, the relative arrangement, etc. are not the meaning which limits the scope of the present invention to this, but are only a mere illustration example. Moreover, in this embodiment, the case where the control device of a vehicle is provided in the engine room of a vehicle is described as an example.

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

  As shown in FIG. 1, in the engine compartment 1, an engine 3, a fan 5 disposed in front of the engine 3 and a motor 7 for driving the fan 5 are disposed. 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 grille (not shown) is disposed in front of the condenser 11 so that outside air can flow into the engine room 1 when the vehicle travels. On both sides of the fan 5, the radiator 9 and the condenser 11 in the width direction, air guides 13 are provided for guiding the outside air flowing into the engine room 1 to the engine 3 side. Condenser 11 constitutes a part of air conditioner 20 which air-conditions the inside of compartment 15 of a vehicle. Details of the air conditioner 20 will be described later.

  The control device 40 determines, based on the operating state of the air conditioner 20 detected by the air conditioner operating state detecting means 41, whether the motor 7 is energized or not, and the engine detected by the engine operating state detecting means 51. A second determination unit 55 that determines whether to permit the 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 are provided.

  The condenser 11 cools the refrigerant used for the air conditioner 20. The expansion valve 23 is connected to the downstream side of the condenser 11 via the refrigerant flow passage 21a, and the evaporator 25 (evaporator) is connected to the downstream side of the expansion valve 23 via the refrigerant flow passage 21b. The compressor 27 is connected to the downstream side of the compressor 27 via the refrigerant flow passage 21c. The condenser 11 is connected to the downstream side of the compressor 27 via a refrigerant flow passage 21 d. The condenser 11, the expansion valve 23, the evaporator 25, and the compressor 27 form a circulation path via 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 heat-exchanged with the air in the casing 15 by the evaporator 25. The air that has obtained cold heat from the refrigerant (heat that has been removed by the refrigerant) is fed into the vehicle interior by a blower fan (not shown).

  The motor 7 has the fan 5 attached to its rotating shaft 7a, and the fan 5 is rotated by the drive of the motor 7, so that the outside air drawn from the front of the vehicle flows backward, and the condenser 11, the radiator 9 and the engine 3 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 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 a refrigerant flow passage 21 d connecting the compressor 27 and the condenser 11. If the pressure of the refrigerant discharged from the compressor 27 is too high, there is a possibility that the cooling of the refrigerant in the condenser 11 will be insufficient and the cooling capacity for cooling the air in the passenger compartment 15 will be insufficient. For this reason, a value slightly smaller than the upper limit value in the range of the refrigerant pressure in which there is no risk of insufficient cooling capacity is set as the predetermined value. A detection signal of the air conditioner operating state detection means 41 is sent to the first determination unit 47. The air conditioner operating state detection unit 41 may be a sensor that detects whether 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 It may be at least one of the sensors to be detected.

  The outside air temperature detecting means 43 is a sensor for detecting the temperature of the outside air, and in this embodiment, is disposed forward of the front surface 11 a on one side in the width direction of the condenser 11. A detection signal of the outside air temperature detection means 43 is sent to the controller 60.

  The first determination unit 47 determines whether to energize the motor 7 based on the operating state of the air conditioner 20 detected by the air-conditioner operating state detecting means 41. That is, when it is detected that the refrigerant pressure detected by the air conditioner operating state detecting means 41 exceeds the predetermined value, the first determining unit 47 determines that the motor 7 is permitted to be energized, and the air conditioner operating state is detected. 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 permitted to be energized. The determination result of the first determination unit 47 is sent to the controller 60.

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

  When the controller 60 determines that the electric current to the motor 7 is permitted by the first determination unit 47, the outside air temperature detected by the outside air temperature detection unit 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 less than the first temperature (for example, 15 ° C.), the air conditioning request control is performed to intermittently energize the motor 7 .

  Specifically, as shown in FIG. 1 and FIG. 2, when the outside air temperature becomes 20 ° C. or higher, the controller 60 executes a normal operation of continuously energizing the motor 7 and when the outside air temperature becomes 15 ° C. 60 performs an intermittent operation of intermittently energizing the motor 7. In addition, in order to show a temperature division every 5 degreeC in FIG. 2, about less than 20 degreeC and exceeding 15 degreeC, you may include in 15 degrees C or less or 20 degreeC or more. The same applies to the other categories.

  Further, when the controller 60 executes the intermittent energization to the motor 7 as the air conditioner request control, the controller 60 performs the predetermined first temperature (for example, 15 ° C.) lower than the first temperature (for example, 15 ° C.) When the outside air temperature detected by the outside air temperature detecting means 43 is higher than the second temperature (e.g., 0.degree. C.), the current supply cycle to the motor 7 when the temperature is 2 degrees (e.g., 0.degree. C.) or less Set shorter than the energization cycle.

  Further, as shown in FIG. 1 and FIG. 3, when the second judging unit 55 permits the motor 7 to be energized, the outside air temperature detected by the outside air temperature detecting means 43 is the first temperature (for example, When the temperature is equal to or higher than a predetermined third temperature (e.g., 0.degree. C.) lower than 15.degree. C., the motor 7 is continuously energized and the outside air temperature detected by the outside air temperature detecting means 43 is the third temperature (e.g. When the temperature is lower than 0 ° C., the 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 executes 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 Perform intermittent operation.

  Further, 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 is prioritized.

Next, the operation of the control device 40 of the vehicle will be described with reference to FIGS. The time chart in 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 operated ON at time t _1, the refrigerant becomes flowable, the compressor 27 of the air conditioner 20 by the operation condition is satisfied of the compressor 27 is activated refrigerant 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 (Motor energization permission flag) is set.

When confirming 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 in the case where 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 the motor 7 is continuously energized while the fan 5 is frozen, the motor 7 may generate heat and melt away, but the outside air temperature is lower than the first temperature (15 ° C.) In this case, the motor 7 is intermittently energized, so that 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 properly driven when it is not frozen, and the air conditioning request 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, at time t _7, when the temperature of the cooling water (engine coolant temperature) exceeds a predetermined temperature (e.g., 80 ° C.), the controller 60 executes the engine demand control. That is, since the outside air temperature at time t ₇ is the third temperature (0 ° C.) or higher, the controller 60 continuously actuates the fan 5 is continuously energized motor 7.

  When the engine operating state detecting means 51 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 turns off 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 detecting means 41 detects that the temperature (engine water temperature) of the cooling water is lower than a predetermined temperature (for example, 70 ° C.), the first determination unit 47 lowers the motor energization permission flag, and the controller 60 turns off 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 If it is detected that the predetermined value is exceeded, the controller 60 executes the 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 control device 40 of the vehicle will be described with reference to the flowchart of FIG. First, it is determined whether the temperature (engine water temperature) of the cooling water detected by the engine operating state detecting 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 demand 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 the temperature of the cooling water (engine water temperature) has not exceeded a predetermined temperature (for example, 70 ° C.) (step 102). If the temperature of the cooling water (engine water temperature) does not exceed the 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 a predetermined temperature (for example, If the temperature exceeds 70 ° C., engine demand 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 the predetermined temperature (for example, 80 ° C.), the refrigerant pressure of the compressor 27 detected by the air conditioner operating state detecting means 41 is predetermined. It is determined whether the value is exceeded (step 104).

  If the refrigerant pressure of the compressor 27 exceeds the predetermined value, the air conditioner request control is executed (step 105). In this 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 detection 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, if the refrigerant pressure of the compressor 27 exceeds the predetermined value, it is determined again whether the temperature of the cooling water (engine water temperature) exceeds the predetermined temperature (for example, 80 ° C.) (step 108). . Then, if 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, when it is determined in step 108 that the temperature of the cooling water (engine water temperature) does not exceed the predetermined temperature (for example, 80 ° C.), the air conditioner request control is continuously executed (step 105).

  As described above, when the outside air temperature is lower than the second temperature (0 ° C.), the motor 7 is intermittently energized, so that the heat generation of the motor 7 is suppressed even if the fan 5 is frozen. It is possible to reduce the melting risk of the motor 7. Further, by intermittently energizing the motor 7, the operation of the motor 7 is not stopped, so that the fan 5 can be appropriately driven when the fan 5 is not frozen, and the refrigerant is appropriately selected in the condenser 11. It can meet the air conditioning requirements for cooling. Therefore, it is possible to realize a control device of a vehicle capable of preventing the possibility that the motor 7 may be melted due to ice adhering to the fan 5 or the like and the fan 5 can not rotate.

  In addition, 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 the temperature is lower than 0 ° C., the motor 7 is intermittently energized. Thereby, the melting risk of the motor 7 can be more reliably reduced.

  On the other hand, when driving the fan 5 according to the request from the engine 3, the motor 7 is intermittently energized only when the outside air temperature is less 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 may freeze even if the outside air temperature is above zero, but if it is intermittently operated in a non-freeze state, cooling of the radiator 9 is unnecessarily interrupted. There is a possibility that the engine requirement can not be satisfied and the engine may overheat. Therefore, when the fan 5 is operated according to the engine request, reliable cooling of the radiator 9 in the case where it is not frozen by continuously energizing the motor 7 if the outside air temperature is the third temperature (0 ° C.) or more As long as the risk of freezing is less than the high third temperature, intermittent operation can reduce the risk of the motor 7 from being damaged.

Further, when the 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. Therefore, the risk of melting damage of the motor can be more reliably reduced. it can.
Furthermore, since the engine demand control is prioritized and executed when the air conditioning demand control and the engine demand control overlap, cooling of the radiator 9 is reliably performed when the fan 7 is not frozen. Overheat of 3 can be suppressed more reliably.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said form, A various change in the range which does not deviate from the objective of this invention is possible.

DESCRIPTION OF SYMBOLS 1 engine room 3 engine 5 fan 7 motor 7a rotating shaft 11 condenser 13 air guide 15 compartment 20 air conditioner 21a, 21b, 21c, 21d refrigerant flow path 23 expansion valve 25 evaporator 27 compressor 40 control device 41 air conditioner operation state detecting means 43 outside air Temperature detection means 47 first judgment unit (first judgment means)
51 Engine operating state detecting means 55 second judging unit (second judging means)
60 controller (control means)

Claims (5)

A condenser that cools a refrigerant used in a cabin air conditioner;
A fan for blowing air to the condenser;
A motor for driving the fan;
An air conditioner operating state detecting means for detecting an operating state of the vehicle interior air conditioner
Outdoor temperature detection means for detecting the outdoor temperature;
First determining means for determining whether to energize the motor based on the operating state of the in-vehicle air conditioner detected by the air conditioner operating state detecting means;
A control device for a vehicle, comprising: control means for controlling an energization state of the motor.
The control means
When energization of the motor is permitted by the first determination unit, the motor is continuously energized when the outside air temperature detected by the outside air temperature detection unit is equal to or higher than a predetermined first temperature, The air conditioner request control is performed to intermittently energize the motor if the outside air temperature detected by the outside air temperature detecting means is less than the first temperature ,
Furthermore, in the case of executing the intermittent energization to the motor as the air conditioner request control, the motor when the outside air temperature detected by the outside air temperature detecting means is equal to or lower than a predetermined second temperature lower than the first temperature. A control apparatus for a vehicle, wherein an energization cycle of the motor is set shorter than an 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 control device of a vehicle 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;
An engine operating state detecting means for detecting an operating state of the engine;
And second determining means for determining whether or not to permit energization of the motor based on the operating state of the engine detected by the engine operating state detecting means;
The fan is configured to be able to blow air to the radiator,
When the control unit is permitted to energize the motor by the second determination unit, the outside temperature detected by the outside temperature detection unit is equal to or higher than a predetermined third temperature lower than the first temperature. The present invention is characterized in that the engine request control is executed to energize the motor continuously and to intermittently energize the motor when the outside air temperature detected by the outside air temperature detecting means is less than the third temperature. The control device of the vehicle according to claim 1 or 2 . The control means sets the energization cycle to the motor to be shorter as the outside air temperature detected by the outside air temperature detection means becomes lower, when performing intermittent energization to the motor as the engine request control. The control device of the vehicle according to claim 3 . The vehicle according to claim 3 or 4 , wherein the control means executes the engine request control when energization of the motor is permitted by the first determination means and the second determination means. Control device.

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