JP6734725B2 - Air flow controller for vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle airflow control device, and more particularly to a vehicle airflow control device that is provided in a vehicle wheel and includes an opening/closing unit that can open/close a wheel opening.

The airflow that flows through the vehicle during traveling includes the airflow that enters the engine room from the bumper side in front of the vehicle, passes through the wheel openings, and flows on the side surface of the vehicle. While traveling, this airflow provides a brake cooling effect, while during high-speed traveling, this airflow interferes with the airflow that flows along the side of the vehicle outside the wheels, creating air resistance and reducing fuel efficiency. It is also known.

In order to eliminate such a reduction in fuel consumption due to air resistance, in Patent Document 1, an open position that is provided in a vehicle wheel and that opens all the wheel openings, and a closed position that closes all the wheel openings. An air flow control device for a vehicle is described, which is provided with a movable opening/closing means. In this device, when the vehicle is traveling at high speed, the opening opening/closing means is moved to the closed position to close all the wheel openings, thereby suppressing the airflow flowing out of the vehicle openings to the outside of the vehicle.

JP, 2006-327548, A

In the vehicle airflow control device of Patent Document 1, during high speed traveling, the airflow passing through the wheel openings is blocked to suppress the interference with the airflow flowing on the side surface of the vehicle, thereby reducing the air resistance. It is possible to achieve low fuel consumption.

However, if all of the wheel openings are closed, the air pressure inside the wheel house rises, which raises the lift force acting on the vehicle body and makes the vehicle posture unstable.

The present invention has been made in view of the above problems, and an object thereof is to improve the fuel efficiency by suppressing the interference of the air flow, while suppressing the increase of the lift force acting on the vehicle. An object is to provide a control device.

In order to achieve the above object, the vehicle airflow control device according to the present invention is attached to a vehicle body side component that does not rotate with a vehicle wheel, and is opened by a control unit to open a wheel opening. In a vehicle airflow control device including a position and a closing position that closes the wheel opening, the opening opening/closing unit being capable of movement control, the opening/closing unit includes the opening/closing unit of the wheel in the closed position. Of the first region on the lower side from the predetermined height position and the second region located above the first region , at least a part of the wheel opening in the first region is closed, and the other one is closed. At least a part of the wheel opening in the region is opened, and the predetermined height position is a vehicle body lower end position in front of the wheel .
Further, the present invention is characterized in that, in the vehicle airflow control device, the control unit moves the opening opening/closing means to an open position or a closed position according to the speed of the vehicle.

According to this configuration, when the opening opening/closing means is in the closed position, at least a part of the wheel opening in one of the first area and the second area is closed, so that the wheel flows out from the wheel opening. The generated airflow can be reduced and the interference with the airflow passing through the side of the vehicle can be suppressed. As a result, the fuel economy is improved by suppressing the generation of air resistance. Further, since the opening opening/closing means simultaneously opens at least a part of the wheel opening in the other area, the air in the wheel house can be discharged from the wheel opening in the open state. As a result, it is possible to suppress an increase in the air pressure inside the wheel house and an increase in the lift force that acts on the vehicle.

According to this configuration, air easily flows out from the wheel opening located at a position lower than the lower end of the vehicle body. Therefore, the opening opening/closing means allows this area (that is, the first area located below the lower end of the vehicle body). By closing the wheel opening in (1), the effect of suppressing the air resistance due to the air flow flowing out from the wheel opening can be enhanced.
Further, according to this configuration, since the traveling wind acting on the vehicle body changes depending on the speed of the vehicle, by controlling the movement of the opening/closing means according to the speed, good aerodynamic performance can be obtained during low speed traveling and high speed traveling. Obtainable.

Further, in order to achieve the above object, the vehicle airflow control device according to the present invention is attached to a vehicle body side component that does not rotate with a vehicle wheel, and a wheel opening is opened by a control unit. In an air flow control device for a vehicle, which is provided with an opening opening/closing means capable of movement control between an open position for closing the wheel opening and a closed position for closing the wheel opening, In the closed position, the opening opening/closing means is provided with a flap that protrudes to a lower side of a predetermined height position of the wheel from the first area and the first area. Also in the second region located above, at least a portion of the wheel opening in one region is closed, at least a portion of the wheel opening in the other region is opened, the control unit, The opening opening/closing means is moved to an open position or a closed position according to the projection size of the flap.

According to this configuration, the flap arranged in front of the wheel house can rectify the air flow generated on the lower side of the vehicle body to improve the aerodynamic performance, and the opening portion can be opened in accordance with the protruding size of the flap. By controlling the opening/closing movement of the opening/closing means, it is possible to enhance the air flow rectifying effect, that is, the effect of reducing the air resistance.

Further, the present invention is the air flow control device for the vehicle, the wheel is in the third region in which the flap is arranged in the vertical direction A between the first region and the second region and the An intermediate opening opening/closing means capable of opening/closing the wheel opening is provided, and the control section moves the intermediate opening opening/closing means to an open position or a closed position according to a projection size of the flap. ..

With this configuration, the airflow generated in the third region can be appropriately controlled by the flap and the intermediate opening/closing means, and the aerodynamic performance can be improved.

Further, the present invention is the air flow control device for the vehicle, wherein the control unit is characterized by changing the projecting dimension of the flap depending on the speed of the vehicle.

According to the vehicle airflow control device of the present invention, it is possible to suppress an increase in lift acting on the vehicle while improving fuel efficiency.

1 is a schematic explanatory diagram of a vehicle airflow control device according to a first embodiment of the present invention. The schematic side view of the front part of a vehicle. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2, showing a state in which the shutter is in the open position. The principal part enlarged view of FIG. The flowchart figure which shows the process which a control unit performs. The figure similar to FIG. 3 which shows the modification 1 of a shutter. The figure similar to FIG. 3 which shows the modification 2 of a shutter. The side view similar to FIG. 2 which shows the vehicle airflow control apparatus of 2nd Embodiment. FIG. 9 is a sectional view taken along line IX-IX in FIG. 8, showing a state in which the first shutter and the second shutter are in the closed position. The flowchart figure which shows the process which a control unit performs.

(First embodiment)
FIG. 1 is a schematic explanatory diagram of a vehicle airflow control device 1 according to a first embodiment of the present invention. The vehicle air flow control device 1 adjusts an air flow passing through the inside of the wheel house 3, and can open and close a vehicle wheel 20 arranged inside the wheel house 3 and a wheel opening 24. And a shutter (opening/closing means) 30. As shown in FIG. 2, a flap 40 protruding from the lower surface of the vehicle body is provided in front of the wheel house 3. The vehicle airflow control device 1 also includes a vehicle speed sensor 11 that detects the speed of the vehicle 2, a changeover switch 12, an opening/closing switch 13, a flap detection sensor 14, a control unit (control unit) 15, and a shutter 30. And a drive unit 33 for moving the.

As shown in FIG. 2, the wheel 20 has a wheel center portion 21, a rim portion 22 on which the tire 29 is mounted, and a plurality of spokes 23 connecting the wheel center portion 21 and the rim portion 22. As shown in FIGS. 1 and 3, the wheel center portion 21 is connected and fixed to a hub 52 connected to an end portion of the drive shaft 51. The plurality of spokes 23 extend radially from the wheel center portion 21, and the tips are connected to the inner peripheral surface of the rim portion 22.

The power of the engine EG is transmitted to the drive shaft 51 via the transmission TM. A suspension device that supports wheels is connected to the hub 52 attached to the end of the drive shaft 51. The suspension device includes a housing 56 that rotatably supports the hub 52, a lower arm 57 and struts (not shown) connected to the housing 56, and the like. A brake caliper that sandwiches the brake disc 53 to generate a braking force and a tie rod (not shown) of a steering system are connected to the housing 56.

As shown in FIG. 2, a flap 40 that projects downward from the lower surface of the vehicle body is disposed in front of the wheel house 3. The flap 40 constitutes a rectifying structure for preventing the airflow passing through the lower part of the vehicle body from being disturbed by the rotation of the front wheels from increasing the air resistance in the traveling wind generated when the vehicle is traveling. The flap 40 is a substantially rectangular plate-shaped member extending in the width direction of the vehicle 2 so as to be wider than the tire 29, and has a downward protruding dimension L by a drive unit such as an electric motor (not shown). It is configured to be modifiable. The flap 40 can be configured such that the protrusion dimension L is changed according to the speed of the vehicle 2 by a flap control unit (not shown), for example. As an example, when the speed of the vehicle 2 is equal to or higher than a predetermined threshold value, the protrusion dimension L is increased, and when the speed is less than the predetermined threshold value, the protrusion dimension L can be decreased.

For the sake of convenience, the wheel 20 is, in the installed state, a first region 61 located below a predetermined height position and a region adjacent to and above the first region 61 (that is, above the first region 61). (Located in the second area 62). In FIG. 2, the first region 61 is a region surrounded by a broken line with reference numeral 31, and the second region 62 is a region surrounded by a chain double-dashed line. In this embodiment, the predetermined height position is the vehicle body lower end position in front of the wheel 20. Here, the vehicle body lower end position is the position of the lower end 40a of the flap 40 arranged in front of the wheel 20 when the vehicle is stopped, and in the present embodiment, particularly when the protrusion dimension L of the flap 40 is maximum. The position of the lower end 40a (hereinafter referred to as the maximum dimension L ₀ ) is the vehicle body lower end position. When the vehicle 2 does not have the flap 40, the vehicle body lower end position can be the position of the vehicle body lower surface 5 in front of the wheel 20. A shutter 30 that can open and close the wheel opening 24 in the first area 61 is provided on the back surface side (inside the vehicle 2) of the wheel 20. It should be noted that the shutter 30 may have a structure capable of closing the wheel opening 24 in the side projection view shown in FIG. 2. In the closed state, there is a gap between the wheel opening 24 and the shutter 30 in the vehicle width direction. May be formed.

The shutter 30 is configured to be movable between an open position that opens the wheel opening 24 in the first region 61 and a closed position that substantially closes the wheel opening 24. As shown in FIGS. 3 and 4, the shutter 30 includes a shutter unit 31, a support unit 32, and a drive unit 33.

The shutter portion 31 is formed of a plate-shaped member, and is formed in a substantially bow shape so as to be able to close all of the wheel openings 24 in the first area 61. The support portion 32 is a rod-shaped member that supports the shutter portion 31, and has a base end connected to the drive portion 33 and a tip end connected to the shutter portion 31.

The drive unit 33 is attached to the housing 56 and drives the shutter unit 31 and the support unit 32 so that the shutter unit 31 and the support unit 32 can rotate in the circumferential direction of the wheel 20, and is configured by, for example, an electric motor or the like. can do. Further, the driving unit 33 itself may be configured to move the outer peripheral portion of the housing 56 in an arc shape. In the illustrated example, the drive portion 33 is attached to the outer peripheral portion of the housing 56, but the drive portion 33 is housed inside the housing 56, and the support portion 32 extending from the outer peripheral portion of the housing 56 and the support portion 32. The shutter portion 31 connected to the above may be rotatably attached. The drive unit 33 is not limited to the housing 56, and may be installed inside the rim portion 22 of the wheel 20 that does not rotate during traveling, such as a brake caliper.

As shown in FIG. 4, the shutter 30 is installed with the substantially arcuate plane of the shutter portion 31 facing the vehicle outer surface. As indicated by the arrow, the shutter portion 31 and the support portion 32 can be rotated in the circumferential direction of the wheel 20 by the drive portion 33. Specifically, the shutter portion 31 shown by the broken line in FIG. It is possible to rotate between a closed position located at 61 and an open position where the shutter portion 31 is located at the second region 62, which is indicated by a chain line in FIG. 4. When the shutter 30 moves to the open position, it opens all of the wheel openings 24 in the first region 61 and a part of the wheel openings 24 in the second region 62, and moves to the closed position. , Substantially all of the wheel openings 24 in the first area 61 and open all of the wheel openings 24 in the second area. Such a shutter 30 is provided on at least the left and right front wheel 20 and can also be provided on the left and right rear wheel 20.

The changeover switch 12 is a switch for switching between a manual control mode in which the movement of the shutter 30 is manually controlled and an automatic control mode in which the control unit 15 controls.

The open/close switch 13 is a switch that selects an open mode for opening the shutter 30 and a closed mode for opening the shutter 30 when the manual control mode is selected by the changeover switch 12.

The flap detection sensor 14 detects the protrusion size L of the flap 40, and is installed near the flap 40. The vehicle speed sensor 11, the changeover switch 12, the opening/closing switch 13, and the flap detection sensor 14 are connected to the control unit 15, respectively.

The control unit 15 operates the drive unit 33 based on the vehicle speed detected by the vehicle speed sensor 11 and the protrusion size of the flap 40 detected by the flap detection sensor 14 in the automatic control mode. In the manual control mode, the drive unit 33 is operated based on the signal from the open/close switch 13. Specifically, the drive unit is configured to set the shutter 30 to the open position when receiving the signal for selecting the open mode from the open/close switch 13 and to set the shutter 30 to the closed position when receiving the signal to select the close mode. 33 is activated. In the control unit 15, a speed threshold V _A for determining whether or not the vehicle 2 is traveling at a high speed that is equal to or higher than a predetermined speed is set. Further, a size threshold L _A for determining whether or not the protrusion size of the flap 40 is equal to or larger than a predetermined size is set. Here, the size threshold L _A is the maximum size L ₀ of the flap 40.

Next, movement control of the shutter 30 by the control unit 15 will be described. FIG. 5 is a flowchart showing the processing performed by the control unit 15.

First, the control unit 15 determines whether the movement control of the shutter 30 is in the automatic control mode based on the signal from the changeover switch 12 (step S101).

When it is in the automatic control mode (step S101: Yes), the control unit 15 determines whether the vehicle speed V of the vehicle 2 is equal to or higher than the threshold value _VA based on the detection value of the vehicle speed sensor 11 (step S102).

When the vehicle speed V is lower than the threshold value _VA (step S102: No), the control unit 15 operates the drive unit 33 to move the shutter 30 to the open position (step S103). Then, the process is ended (return).

Vehicle speed V is equal to or larger than the threshold value _{V A} (step S102: Yes), on the basis of the detection result of the flap detection sensor 14, the projecting dimension of the flap 40 is determined whether more than a predetermined size threshold _{L A} (step S104).

When the protrusion size is equal to or larger than the size threshold L _A (step S104: Yes), the control unit 15 operates the drive unit 33 to move the shutter 30 to the closed position (step S105). Then, the process is ended (return).

When the protruding size is smaller than the size threshold L _A (step S104: No), the control unit 15 operates the drive unit 33 to move the shutter 30 to the open position (step S103). Then, the process is ended (return).

On the other hand, when the selected mode is the manual control mode in step S101 (step S101: No), the control unit 15 determines whether the signal from the open/close switch 13 is the open mode (step S106). When the signal is in the open mode (step S106: Yes), the drive unit 33 is operated to move the shutter 30 to the open position (step S103), and the process ends (return). When the signal is in the closed mode (step S106: No), the drive unit 33 is operated to move the shutter 30 to the closed position (step S105), and the process ends (return).

In the vehicle airflow control device 1 described above, the shutter 30 opens a part of the wheel opening 24 and closes a part of the wheel opening 24, so that the airflow flowing out from the wheel opening 24 is reduced. It is possible to suppress the interference with the air flow passing through the side of the vehicle. At the time of traveling, the wheel opening 24 located at a position lower than the lower end of the vehicle body (that is, the wheel in the first area 61) than the wheel opening 24 on the upper side from the lower end of the vehicle body (that is, the wheel opening 24 in the second area 62). Air easily flows out through the opening 24). Therefore, when the vehicle is traveling at high speed, the shutter 30 is controlled to move to the closed position to close the wheel opening 24 in the first area 61, thereby enhancing the effect of suppressing the air resistance due to the air flow flowing out from the wheel opening 24. As a result, fuel efficiency can be improved. Further, at this time, since the wheel opening 24 in the second region 62 is in an open state, it is possible to prevent air from accumulating in the wheel house 3 and increasing the air pressure. As a result, the lift of the lift acting on the vehicle 2 is suppressed. On the other hand, when the vehicle is traveling at a low speed, the cooling effect of the brake can be enhanced by opening the wheel opening 24 in the first area 61.

Further, by operating the shutter 30 in accordance with the projection size of the flap 40 having the air flow rectifying effect, the air resistance reducing effect can be further enhanced. Since the flap 40 is usually controlled so that the protruding dimension L becomes large during high-speed traveling, by closing the wheel opening 24 in the first region 61 at this time, fuel efficiency can be significantly improved.

When the protrusion size L of the flap 40 is changed according to the vehicle speed, the shutter 30 may be controlled to move based on only the detection result of the vehicle speed sensor 11 or only the detection result of the flap detection sensor 14.

(Modification 1)
FIG. 6 shows a first modification of the shutter 30 described above. In the shutter 30 of the first modification, the support portion 32 is bent, and the shutter portion 31 attached to the tip of the support portion 32 is positioned outside the brake disc 53 in the vehicle width direction. The shutter unit 31 and the support unit 32 are rotatable by the drive unit 33, and move to a closed position where the shutter unit 31 is located in the first region 61 and an open position where the shutter unit 31 is located in the second region 62. Configured to be possible. In the first modification, the shutter portion 31 is arranged at a position closer to the wheel opening portion 24, so that the effect of suppressing the air flow flowing out from the wheel opening portion 24 in the first region 61 when the shutter portion 31 moves to the closed position. Can be increased.

(Modification 2)
FIG. 7 shows a second modification of the shutter 30 described above. The shutter 30 of the second modification is configured such that the drive unit 33 allows the shutter unit 31 to move in the vehicle width direction. Specifically, when the shutter portion 31 moves outward in the vehicle width direction to substantially close the wheel opening 24 in the first region 61 (a position indicated by a solid line in FIG. 7), the shutter portion 31 It moves to the inner side in the vehicle width direction away from the wheel opening 24, and at the open position (the position shown by the chain double-dashed line in FIG. 7) where the wheel opening 24 in the first region 61 and the second region 62 is opened. It is configured to be movable. In the shutter 30 of the modified example 2, when the shutter 30 moves to the open position, all the wheel openings 24 located in the first area 61 and the second area 62 can be opened, and the brake cooling effect can be enhanced.

(Second embodiment)
FIG. 8 is a side view similar to FIG. 2 showing the vehicle airflow control device 1 of the second embodiment, and FIG. 9 is a sectional view taken along line IX-IX of FIG. In the second embodiment described below, parts corresponding to those in the first embodiment are designated by the same reference numerals, and details of the same configurations as those in the first embodiment are omitted here. The vehicle air flow control device 1 according to the second embodiment includes two shutters that can open and close the wheel opening 24, that is, a shutter (opening opening/closing means) 30 that is a first shutter and a second shutter. And an intermediate shutter (intermediate opening opening/closing means) 35.

In the present embodiment, the wheel 20 is provided with a third region 63 located between the first region 61 and the second region 62, in addition to the first region 61 and the second region 62. The third region 63 is set at a position where the flap 40 is arranged in the up-down direction of the vehicle 2, and the third region 63 is a region surrounded by a dotted line 36 in FIG. In the present embodiment, the first area 61 is set similarly to the first embodiment, and the second area 62 is an area adjacent to and above the third area 63.

The shutter 30 is capable of opening and closing the wheel opening 24 in the first area 61, and has the same configuration as that of the modified example 1 in the present embodiment.

The intermediate shutter 35 includes a shutter portion 36, a support portion 37 that supports the shutter portion 36, and a drive portion 38. The shutter portion 36 is a plate-shaped member, and is formed in a shape capable of closing the wheel opening 24 in the third region 63 in plan view, as shown by the broken line in FIG. In the intermediate shutter 35, the shutter portion 36 and the support portion 37 are rotatable in the circumferential direction of the wheel 20 by the driving force of the driving portion 38 attached to the housing 56, and the shutter portion 36 is located in the third region 63. And the closed position (the position shown by the solid line in FIG. 9) that substantially closes the wheel opening 24 of the third region 63, and the shutter portion 36 moves to the first region 61 to move the wheel opening of the third region 63. 24 is configured to be movable to an open position (a position indicated by a chain line in FIG. 9) which is opened. The drive unit 38 is connected to the control unit 15, and moves the shutter unit 36 and the support unit 37 to the open position or the closed position according to an instruction from the control unit 15.

Next, movement control of the shutter 30 and the intermediate shutter 35 by the control unit 15 will be described. FIG. 10 is a flowchart showing the processing performed by the control unit 15.

First, the control unit 15 determines from the signal from the changeover switch 12 whether the movement control of the shutter 30 is in the automatic control mode (step S201).

In the automatic control mode (step S201: Yes), the control unit 15 determines whether the vehicle speed V of the vehicle 2 is equal to or higher than the threshold value _VA based on the detection value of the vehicle speed sensor 11 (step S202).

When the vehicle speed V is lower than the threshold value _VA (step S202: No), the control unit 15 operates the drive units 33 and 38 to move the shutter 30 and the intermediate shutter 35 to the open position (step S203). Then, the process is ended (return).

When the vehicle speed V is equal to or higher than the threshold value V _A (step S202: Yes), it is determined whether the protrusion size of the flap 40 is equal to or higher than a predetermined size threshold value L _A based on the detection result of the flap detection sensor 14 (step S204).

If the projecting dimension greater than the dimension threshold _{L A} (step S204: Yes), the control unit 15 actuates the respective drivers 33, 38 to move the shutter 30 and the intermediate portion shutter 35 in the closed position (step S205). Then, the process is ended (return).

When the protruding size is smaller than the size threshold L _A (step S204: No), the control unit 15 operates the drive unit 33 to move the shutter 30 to the closed position, and operates the drive unit 38 to open the intermediate shutter 35. It is moved to the open position (step S206). Then, the process is ended (return).

On the other hand, when the selected mode is the manual control mode in step S201 (step S201: No), the control unit 15 determines whether the signal from the open/close switch 13 is the open mode (step S207). When the signal is in the open mode (step S207: Yes), the drive units 33 and 38 are operated to move the shutter 30 and the intermediate shutter 35 to the open position (step S203), and the process ends (return). When the signal is in the closed mode (step S207: No), the drive units 33 and 38 are operated to move the shutter 30 and the intermediate shutter 35 to the closed position (step S205), and the process ends (return).

The vehicle air flow control device 1 of the present embodiment has the same effects as those of the first embodiment, and appropriately controls the turbulence of the air flow generated in the third region 63 by the flap 40 and the intermediate shutter 35. Therefore, the aerodynamic performance can be further improved. Specifically, when the protrusion size L of the flap 40 is reduced and the vehicle body lower end position is increased, the shutter 30 and the intermediate shutter 35 are set to the closed position, and the protrusion size L of the flap 40 is increased. When the vehicle body lower end position becomes lower, only the shutter 30 is set to the closed position so that the wheel opening 24 on the lower side from the vehicle body lower end position is appropriately closed even when the vehicle body lower end position is changed. It is possible to improve fuel efficiency.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. For example, when the shutter 30 is in the closed position, the shutter 30 closes at least a part of the wheel opening 24 in one of the first area 61 and the second area 62, and the wheel opening 24 in the other area. It is sufficient that at least a part of the above can be opened. For example, when the shutter 30 is in the closed position, a part of the wheel opening 24 of the first area 61 is closed and a part of the wheel opening 24 of the second area 62 is closed (that is, a part of the wheel opening 24 is opened). In addition, when the shutter 30 is in the closed position, a part of the wheel opening 24 in the first area 61 is closed and the entire wheel opening 24 in the second area 62 is opened. can do. In this case, the shape of the shutter portion 31 can be appropriately set according to the closed range.

Further, the intermediate portion shutter 35 can change the arrangement position and the moving direction of the shutter portion 36, similarly to the shutters 30 of Modifications 1 and 2. For example, as in Modification 2, the shutter portion 36 moves inward in the vehicle width direction to open the wheel opening 24 in the third region 63, and moves outward in the vehicle width direction to move in the vehicle width direction outward. You may make it the wheel opening part 24 in a closed state.

1 Vehicle Air Flow Control Device 3 Wheelhouse 11 Vehicle Speed Sensor 12 Changeover Switch 13 Open/Close Switch 14 Flap Detection Sensor 15 Control Unit (Control Section)
20 Wheel 24 Wheel Opening 30 Shutter (Opening/Closing Means)
33, 38 drive unit 35 intermediate shutter (intermediate opening opening/closing means)
40 flaps

Claims (5)

An opening that is attached to a vehicle body-side component that does not rotate with a vehicle wheel and that can be movement-controlled between an open position where the control unit opens the wheel opening and a closed position where the wheel opening is closed. In a vehicle air flow control device having an opening/closing means,
The opening closing means, in the case of the closed position, of the second region located above the first region and the first region of the lower side from a predetermined height position in the wheel, said first Closing at least a portion of the wheel opening in the area and opening at least a portion of the wheel opening in the other area ,
The vehicle airflow control device, wherein the predetermined height position is a vehicle body lower end position in front of the wheel . The vehicle airflow control device according to claim 1, wherein the control unit moves the opening opening/closing unit to an open position or a closed position according to the speed of the vehicle. An opening that is attached to a vehicle body-side component that does not rotate with a vehicle wheel and that can be movement-controlled between an open position where the control unit opens the wheel opening and a closed position where the wheel opening is closed. In a vehicle air flow control device having an opening/closing means,
While protruding downward from the lower surface of the vehicle body in front of the wheel house accommodating the wheel, it is provided with a flap that can change the protruding dimension,
In the case of the closed position, the opening opening/closing means is provided in one of a first region below a predetermined height position of the wheel and a second region located above the first region. Closing at least a portion of one of the wheel openings and opening at least a portion of the wheel opening in the other region,
Wherein, in response to the projecting dimension of said flap, the opening closing means open position or car dual airflow controller you and moving to the closed position. The wheel is provided with intermediate opening opening/closing means capable of opening/closing the wheel opening in a third area between the first area and the second area in which the flap is arranged in the vertical direction. ,
The vehicle airflow control device according to claim 3, wherein the control unit moves the intermediate opening opening/closing unit to an open position or a closed position according to a protrusion size of the flap. The vehicle airflow control device according to claim 3 or 4 , wherein the control unit changes the protrusion size of the flap according to the speed of the vehicle.

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