JP6416651B2 - Shutter opening / closing control device for vehicle - Google Patents

Description

  The present invention relates to a vehicle shutter opening / closing control device that is provided at a front portion of a vehicle and adjusts the amount of outside air introduced into the front portion.

In recent years, a technology aimed at the air curtain effect that improves the aerodynamic performance by guiding the wind received by the front part of the vehicle body to the outside of the front tire and actively guiding the wind hitting the front tire from the front to the outside Is attracting attention.
Patent Document 1 describes a brake cooling structure provided with an air scoop flap that opens and closes a wind guide portion that guides air from a front portion of a vehicle body to a front tire. The brake device can be cooled by the device described in Patent Document 1.
On the other hand, a front grille that can be opened and closed and a normally open air inlet are provided at the front part of the vehicle, and the engine is driven by cooling air introduced from the air inlet while closing the front grill and reducing the drag coefficient of the vehicle body at high speeds. There is known one provided with a shutter device for cooling.

Japanese Patent Laid-Open No. 61-024352

  However, the brake cooling structure described in Patent Document 1 cools the brake device, and does not improve the cooling performance or aerodynamic performance of the internal combustion engine.

  SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a shutter opening / closing control device for a vehicle that solves the above problems and can improve aerodynamic performance and cooling performance of an internal combustion engine disposed in an engine room.

  In order to solve the above-described problem, a shutter opening / closing mechanism for a vehicle according to claim 1 includes: a shutter that opens and closes a first duct that guides air from the front of a vehicle body into the engine room; and A flap that opens and closes a second duct that guides air from the duct into the tire house outside the vehicle width, and an opening / closing control means that closes the other when one of the shutter and the flap is open. Features.

  According to such a configuration, an aerodynamic performance improvement effect by closing the shutter and a further aerodynamic performance improvement effect by introducing air into the tire house to have an air curtain effect can be obtained. Further, by opening the shutter and closing the flap, the air guided to the front part of the vehicle body can be concentrated on the shutter grille opening and the amount of the air can be increased. Thereby, the cooling performance of the internal combustion engine arrange | positioned in an engine room and an engine room can be improved.

  The shutter opening / closing mechanism for a vehicle according to claim 2, wherein the second duct includes a sub duct capable of guiding outside air from the front of the vehicle body to the tire house side of the flap, and the second duct and the sub duct It comprises a sub-flap that closes the other when one is opened.

  According to such a configuration, even when the second duct is closed by the flap, it is possible to guide the air into the tire house by providing the sub duct and the sub flap, and the aerodynamic performance improvement effect by the air curtain effect can be achieved. Can be obtained. Further, when the second duct is opened by the flap, the sub duct is closed by the sub flap so that the air is concentrated on the second duct to obtain the aerodynamic performance improvement effect without hindering the air curtain effect. Can do.

  The shutter opening / closing mechanism for a vehicle according to claim 3, wherein the second duct has a sub-duct capable of guiding outside air from the front of the vehicle body toward the tire house side of the flap, a sub-flap for opening / closing the sub-duct, And the opening / closing control means closes the sub duct when the flap opens the second duct, and closes the sub duct when the flap closes the second duct. It is characterized by opening.

  According to such a configuration, even when the second duct is closed by the flap by the simpler flap configuration and opening / closing control, it is possible to guide the air into the tire house by providing the sub duct and the sub flap. .

  ADVANTAGE OF THE INVENTION According to this invention, the opening / closing control apparatus of the shutter of a vehicle which can improve aerodynamic performance and the cooling performance of the internal combustion engine arrange | positioned in an engine room can be provided.

It is a top view at the time of shutter opening of the shutter opening / closing control device for a vehicle according to the first embodiment of the present invention. It is a top view at the time of shutter closing of the shutter opening / closing control device for a vehicle according to the first embodiment of the present invention. It is a top view at the time of shutter opening of the shutter opening / closing control apparatus of the vehicle which concerns on the 2nd Embodiment of this invention. It is a top view at the time of shutter closing of the shutter opening / closing control apparatus of vehicles concerning a 2nd embodiment of the present invention. It is a top view at the time of shutter closing of the shutter opening / closing control device of the vehicle concerning the modification of the 2nd embodiment of the present invention.

(First embodiment)
A first embodiment of the present invention will be described in detail with reference to FIGS. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. Moreover, when explaining a direction, it demonstrates based on the front-back, left-right, up-down seen from the driver | operator of the vehicle. In the embodiment of the present invention, “front” is the forward side of the vehicle C, “rear” is the backward side of the vehicle C, “upper” is the vertical upper side, “lower” is the lower vertical side, and “left and right” is the vehicle width direction. Let it be the side.
The vehicle C having the shutter opening / closing control device according to the present embodiment is, for example, an FF (front engine / front drive), FR (front engine / rear drive), a four-wheel drive passenger car, or the like.

As shown in FIGS. 1 and 2, a front skirt 1, a front grill 2, a shutter opening / closing mechanism (hereinafter referred to as an opening / closing mechanism) 10, an air conditioner condenser 4, a radiator 5, and an engine are provided at the front of the vehicle C. A room (drive source accommodation chamber) 6 and the like are provided. A tire house 3 that covers the tire T is provided on the side of the vehicle C.
The front skirt 1 is formed to curve along the vehicle body shape from the front to the side of the vehicle C. A front grill 2 is opened at the center of the front width 1a of the front skirt 1 and a rear end 1b outside the vehicle width forms a part of the tire house 3 by continuing to the tire house 3.
The front grill 2 includes a first duct 21 that guides traveling wind to the engine room 6.
The opening / closing mechanism 10 has a shutter 11 that opens and closes the first duct 21, and controls the amount of traveling wind sent to the radiator 5 and the engine room 6 by opening and closing the shutter 11. The engine room 6 is a space for storing an engine and the like. A hood (not shown) is disposed above the engine room 11.
The shutter 11 is of a normally open type, and moves a plurality of shafts supported by the shutter base, fins rotatably attached to the shafts, slide links connected to the fins, and slide links. A torque motor (both not shown) is provided.

A front part of the vehicle C is provided with a second duct 22 that guides air from the first duct 21 into the tire house 3 outside the vehicle width. In the second duct 22, an opening 22 a that is an inlet for running wind communicates with the first duct 21, and an opening 22 b that is an outlet for running wind communicates with the tire house 3.
A flap 12 that opens and closes the second duct 22 is provided in the opening 22 a of the second duct 22. The flap 12 is formed in accordance with the cross-sectional shape of the second duct 22, and can close the passage in the second duct 22 without a gap when the flap 12 is closed. The end of the rotation shaft of the flap 12 is directly connected to the rotation shaft 31 a of the torque motor 31, and the rotation shaft 31 a is rotated by supplying power from the battery to the torque motor 31. In response to the rotation of the rotating shaft 31a, the flap 12 fully opens or fully closes the passage in the second duct 22.

The opening / closing mechanism 10 and the torque motor 31 are controlled by the control unit 30 (opening / closing control means). The control unit 30 is configured by a microcomputer including a CPU, a RAM, a ROM, an input / output interface, and the like. The control unit 30 executes shutter opening / closing control according to a control program stored in the ROM based on a detection signal of a vehicle speed sensor (not shown).
The control unit 30 closes one of the shutter 11 and the flap 12 when the other is open.

Hereinafter, the operation of the shutter opening / closing control device configured as described above will be described.
[When stopping from low speed]
As shown in FIG. 1, when the vehicle speed V becomes 10 km / h or less, the controller 30 performs shutter opening / closing control that opens the shutter 11 and maintains the opened state after the vehicle C stops. This prevents a finger or the like from being caught by the shutter 11 while the vehicle C is stopped.

[Driving vehicle C]
While the vehicle C is traveling, the control unit 30 controls the shutter 11 to be in an open state (fully open). The traveling wind introduced from the first duct 21 exchanges heat by passing through the air conditioner condenser 4 and the radiator 5 through the shutter 11. Further, the traveling wind reaches the engine room 6 behind the radiator 5.

[Vehicle C traveling at high speed]
As shown in FIG. 2, when the vehicle C is traveling at high speed, the control unit 30 performs shutter opening / closing control for closing the shutter 11 and opening the flap 12. The running resistance of the vehicle C can be reduced by closing the shutter 11. Also, you can earn downforce.
Further, by opening the flap 12, a further aerodynamic performance improvement effect can be obtained by introducing air into the tire house 3 to give an air curtain effect.

  Thus, the shutter opening / closing control device for a vehicle according to this embodiment includes the shutter 11 that opens and closes the first duct 21 that guides outside air into the engine room, and the second that guides the first duct 21 outward from the vehicle width. The flap 12 that opens and closes the duct 22 is closed when one of the flaps 12 is opened. Therefore, the aerodynamic performance is improved by the shutter 11 and the aerodynamic performance is improved by introducing air into the tire house 3 to provide an air curtain effect. Can be obtained. Further, by concentrating the air guided to the front of the vehicle body on the opening of the shutter 11 and increasing the amount of the guided air, the cooling performance of the engine room 6 and the internal combustion engine disposed in the engine room 6 can be improved. it can.

(Second Embodiment)
A second embodiment of the present invention will be described in detail with reference to FIG. 3 and FIG. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description of overlapping portions is omitted.
As shown in FIGS. 3 and 4, the shutter opening / closing control device for a vehicle according to the embodiment is further connected to the second duct 22 on the vehicle width outer side than the flap 12 and can guide outside air from the front of the vehicle body. A sub duct 23 (a part of the second duct) and a sub flap 13 for opening and closing the introduction of traveling wind from the sub duct 23 to the second duct 22 are provided.
The front skirt 1 is formed with an opening 1 c for introducing running air into the sub duct 23.

  In the sub duct 23, an opening 23 a that is an inlet for running wind communicates with the front portion 1 a of the front skirt 1, and an opening 23 b that is an outlet for running wind is joined to the second duct 22. That is, the second duct 22 is a Y-shaped duct, and the traveling wind is introduced from the first duct 21 on one side of the Y-shape and the traveling wind is introduced from the front part of the vehicle body on the other side of the Y-shape. be introduced.

The sub-flap 13 is disposed at the base of the Y-shape and rotates to close the other when one of the second duct 22 and the sub-duct 23 is open. The sub flap 13 is formed smoothly along the wall surface of the outer wall of the first duct 21 with the sub duct 23 closed. For this reason, when the sub-flap 13 is closed to the sub-duct 23 side, the outside air is smoothly guided without irregularities or joints between the wall surface of the first duct 21 and the wall surface of the sub-flap 13. The sub-flap 13 is formed smoothly along the wall surface of the outer wall of the sub-duct 23 with the second duct 22 closed. For this reason, when the sub flap 13 is closed to the second duct 22 side, the outside air is smoothly guided to the wall surface of the second duct 22 and the wall surface of the sub flap 13 without any irregularities or joints.
The sub-flap 13 is directly connected to the rotating shaft 32 a of the torque motor 32 at the end of the rotating shaft, and rotates the rotating shaft 32 a by supplying power to the torque motor 32.
The control unit 30 performs opening / closing control of a shutter that closes the other when one of the second duct 22 and the sub duct 23 is opened.

  Thus, the shutter opening / closing control device for a vehicle according to the present embodiment opens the sub duct 23 and the sub duct 23 because the sub flap 13 opens the sub duct 23 even when the second duct 22 is closed by the flap 12. By providing the flap 13, wind can be guided into the tire house 3, and an aerodynamic performance improvement effect by the air curtain effect can be obtained. Further, when the second duct 22 is opened by the flap 12, the sub-duct 23 is closed by the sub-flap 13 so that the air is concentrated in the second duct 22 and aerodynamics are not hindered. A performance improvement effect can be obtained. That is, if both the second duct 22 and the sub-duct 23 are open, the guided air collides and cannot stably guide the air, and the air curtain effect is reduced. According to the shutter opening / closing control, this state can be avoided.

[Modification]
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course.

  For example, when the flap 12 opens the second duct 22, the control unit 30 closes the sub duct 23, or when the flap 12 closes the second duct 22, the sub flap 13 closes the sub duct 23. Open / close control of the shutter to be opened is performed.

As shown in FIG. 5, the vehicle shutter opening / closing control apparatus according to the modification of the embodiment may be configured such that the sub flap 13 </ b> A is installed in the sub duct 23. The controller 30 can stop the flow of outside air from the sub duct 23 into the tire house 3 by closing the sub flap 13A. In this case, as shown in FIG. 4, the flap 12 of the second duct 22 is opened. Conversely, the control unit 30 can stop the flow of outside air from the sub duct 23 into the tire house 3 when the sub flap 13A is opened. In this case, as shown in FIG. 3, the flap 12 of the second duct 22 may be closed, or the flap 12 may be left open.
Further, it can be applied to a vehicle equipped with a fuel cell system.

1 Front Skirt 2 Front Grill 3 Tire House 4 Air Conditioner Condenser 5 Radiator 6 Engine Room (Drive Source Storage Room)
DESCRIPTION OF SYMBOLS 10 Shutter opening / closing mechanism 11 Shutter 12 Flap 13, 13A Sub flap 21 1st duct 22 2nd duct 22a, 22b, 23a, 23b Opening part 23 Subduct (a part of 2nd duct)
31, 32 Torque motors 31a, 32a Rotating shaft 30 Control unit (opening / closing control means)
C vehicle

Claims (3)

A shutter that opens and closes a first duct that guides air from the front of the vehicle body into the engine compartment;
A flap that opens and closes a second duct that guides air from the first duct into the tire house outside the vehicle width before the shutter;
An opening / closing control means for closing one of the shutter and the flap when the other is opened;
A shutter opening / closing control device for a vehicle, comprising: The second duct includes a sub-duct capable of guiding outside air from the front of the vehicle body to the tire house side than the flap,
2. The vehicle shutter opening / closing control device according to claim 1, further comprising a sub-flap that closes one of the second duct and the sub-duct when the other is opened. The second duct includes a sub duct capable of guiding outside air from the front of the vehicle body to the tire house side than the flap, and a sub flap that opens and closes the sub duct.
When the flap opens the second duct, the opening / closing control means closes the sub duct, and when the flap closes the second duct, the sub flap opens the sub duct. The shutter opening / closing control device for a vehicle according to claim 1.

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