JP2677352B2 - Air spoiler device for cross wind - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]   The present invention relates to an automobile engine that improves running stability in cross wind.
The present invention relates to an spoiler device. [Conventional technology]   As a conventional air spoiler device for automobiles, for example,
See Japanese Patent Publication No. 57-51581 and Japanese Patent Publication No. 57-95266.
As described above, the air resistance or lift acting on the vehicle body is reduced.
Foreign matter on the front or rear window glass
There are things to prevent.   On the other hand, in automobiles, gusts or steady winds can occur during high-speed driving
Yaw moment and lateral force
Causes the driving stability to be significantly impaired. Such high
Opportunities to drive at high speed increase with the development of highways in recent years.
It is getting more and more. [Problems to be solved by the invention]   However, the conventional air spoiler device has a drag force as described above.
The aim is to reduce lift and lift, and
Not very effective in reducing yaw moment and lateral force
There is no end.   INDUSTRIAL APPLICABILITY The present invention has
Simple sideways of the structure that can reduce force and improve running stability
An object is to provide an air spoiler device for wind. [Means and actions for solving the problems]   The crosswind air spoiler device according to the present invention is
Separately installed at both ends of the front lower part and downward
A pair of protruding air spoilers, each with side wind action
Near the origin of rising eddy currents that sometimes occur on the side of a car
From each front corner of the car
Has a flat portion along the front surface direction, and the length of the flat portion is
It is characterized in that it is approximately 1/4 or more and less than 1/2 of the width of the moving vehicle.   When cross winds are applied to the car while driving, the front of the car
The air flow through the lower crosswind corners of the lower vehicle
An upward vortex flow attached to the side surface of the. For this reason,
A negative pressure maximum is created along the side surface on the downstream side of the crosswind of the vehicle.
Yaw moment and lateral force
Increase. According to the above configuration of the present invention, an automobile flow
The air spoilers installed on both ends of the
To the corner by the flat part along the front of the car
From the side of the car
Separated and the negative pressure maximum part disappears.   As a result, the yaw moment acting on the vehicle and the lateral
The directional force is reduced, especially for yaw moments.
A level equivalent to the one with the spoiler installed across the width of the vehicle
Can be reduced to In addition, each air spoiler
To be installed separately so as to form a space between
Block the radiator cooling air with an air spoiler.
It becomes possible to ventilate without. 〔Example〕   Hereinafter, the present invention will be described based on examples with reference to the accompanying drawings.
I will tell.   FIG. 1 is an air spoiler device according to an embodiment of the present invention.
It shows a so-called 1 Box wagon type car equipped with. D
The spoiler device consists of a pair of air spoilers 1a and 1b.
These air spoilers extend along the front surface of the vehicle body 2.
To the front lower ends 3a and 3b respectively.
Installed. The air spoiler of this embodiment is
It is made of a resin material of the retan type, and is shown in Figs.
As shown in the figure for one air spoiler 1a, a flat trapezoidal flat
It is shaped like a plate. In the case of this embodiment, each air
The length of the spoiler is 400 mm, which is 1/5 of the vehicle width, and the height is
h is 150 mm, which is about 1/13 of the vehicle height. In addition, each air
The inner side of the iller has an inclination angle α of 70 degrees and its lower end is
It is rounded with a radius R of 30 mm.   Both air spoilers 1a and 1b are respectively driven by a drive device 4.
And is rotatably attached to the vehicle body 2. FIG. 2 and FIG.
As shown in the figure, the drive unit 4 is installed on the lower front part of the vehicle body.
A case fixed with appropriate tightening means (not shown) such as bolts
Sourcing 4a. The casing 4a has a gear 6
A reversible electric motor 5 is attached, and a gear 7,
Worm gear 8 (Fig. 3) and worm wheel gear
9 is rotatably supported. Gear 7 meshes with gear 6
Is engaged, and the worm gear 8 is coaxial with the gear 7.
Assembled again, worm gear 8 and worm wheel
The gear 9 is in meshing engagement. Wheel gear 9 times
The rolling shaft 10 penetrates the casing 4a and extends to both sides of the casing 4a.
Air spoilers 1a are fixed on both sides of 10. For this reason,
The rotational driving force of the motor 5 is gear 6, gear 7, worm gear.
8 and worm wheel gear 9 through air spoiler
-Transmitted to 1a. The two-dot chain line in Fig. 3 is the air spoiler.
Shows the storage position of the motor, and the air spoiler 1a rotates the motor 5
From the operating position shown by the solid line according to the rolling direction,
Rotate to storage position or vice versa.   A stopper 11 is fixedly mounted on the rotary shaft 10 of the drive unit 4.
In cooperation with a limit switch (not shown)
The iller is stopped at a predetermined operating or storage position. Book
In the case of the embodiment, the air spoiler is tilted 10 degrees from the vertical.
Air spoiler so that it projects downward with an angle β.
The operating position of is set.   Next, referring to FIG. 4 to FIG.
A situation where a cross wind acts on a moving vehicle will be described. Self
Vehicle speed is V_oSpeed V while driving on_s4th
As shown in the figure, the synthetic wind U is
Tilt angle in the plane, that is, diagonal with yaw angle θ
It acts on the vehicle body 2 from the front. Therefore, the car body
At the center of gravity 12 of 2, the yaw moment 14 along with the lateral force 13
work. These yaw moment 14 and lateral force 13 are
It disturbs the motion of the vehicle and impairs its running stability.   The air generated on the vehicle body surface when such a cross wind is received
The flow is shown in Figures 5a and 5b. Shown in these figures
The air flow is combined with the 1/10 scale model of the 1 Box type car shown in Fig. 1.
The wind U acts on the front surface of the vehicle body 2 and the side surface on the downstream side of the side wind.
This is due to the result of measuring the wind direction at the department. Figure 5a and
From the results shown in Fig. 5 and Fig. 5b, the combined wind U follows the front of the vehicle body 2.
Flow from below to above, especially in front of the side of the vehicle on the downstream side of the crosswind
Flows from the lower corner of the front along the vehicle surface
It can be seen that there is a strong adherent upflow.   Figures 6a and 6b show the wind direction in the attached upward flow of Figure 5a.
The results of the examination are shown, and the reference symbols are respectively shown in Fig. 5a.
Fig. 15 is a wind direction distribution map in the vertical plane marked with 15 and 16.
You. These wind direction distribution maps are shown on the front side of the vehicle body on the downstream side of the crosswind.
It has been clarified that the attached upward flow in
You. Further, FIG. 7 shows the pressure condition on the plane AA of FIG. 6a.
FIG. In the figure, the pressure state is the pressure on the left vertical axis.
Coefficient C_pThis pressure coefficient C_pIs C_p= P / (1/2
・ Ρ ・ U^Two) Is a dimensionless number. Where P is a car
Body surface pressure, ρ is air density, and U is synthetic wind speed
You. From the results shown in Fig. 7, it is negative at the center of the rising vortex.
The pressure is large and its vortex center is very close to the surface of the vehicle body 2.
Therefore, the negative pressure on the vehicle body surface is therefore indicated by B in the figure.
You can see that it is getting bigger.   In order to confirm the effect of the above-mentioned vortex flow rising upward,
Using the same model as in Figures 5 and 5b, the yaw angle of 30 degrees and the combined wind
At the speed of 20 m / sec, the pressure on the side of the vehicle on the downstream side of the crosswind
Force distribution measurements were made. The measurement results are shown in Figure 8.
The number in the figure is the pressure coefficient C_pRepresents the value of. No.
As is clear from the pressure distribution state in Fig. 8, it follows the rising vortex flow.
The negative pressure is large, and as a result, it is especially
This is the cause of the negative pressure maximum portion 17. This negative pressure
The maximum part pulls the front part of the vehicle body 2 to the downstream side of the crosswind, and
Vehicle 14 and lateral force 13
Has a function of impairing row stability.   On the other hand, as described above, the air spoiler according to the embodiment of the present invention.
The radar devices are attached to both front lower ends of the vehicle body 2.
It has a pair of air spoilers. These d
Place the spoilers 1a and 1b on the lower front corner of the vehicle body 2.
It acts to block the entry of airflow. Therefore, the car body 2
Vortex generated from the lower front corner of the crosswind
The direction of flow has changed and the car as shown in Figures 9a and 9b.
It becomes a parallel flow separated from the body surface. As a result, the crosswind downstream
The occurrence of a negative pressure maximum portion on the side of the vehicle body on the side is prevented.
Figures 9a and 9b show the air spoiler of the previous embodiment.
Scaled down and mounted on a 1 / 10th vehicle model, see Figures 5a and 5b
It shows the results of wind direction measurement performed in the same way as in the figure.
You.   The above vehicle model equipped with the air spoiler according to the present invention.
For the mold, measure the pressure distribution under the same conditions as in Fig. 8.
Figure 10 shows the results of the determination. Comparison between Fig. 8 and Fig. 8
As can be seen from the figure, installation of the air spoiler 1a
The maximum pressure part 17 has disappeared. Therefore, the vehicle body due to negative pressure
Suction on the downstream side of the front wind is significantly reduced, acting on the vehicle body
The yaw moment 14 and lateral force 13
The running stability of the car is improved.   In addition, for full-scale automobiles of the type shown in Fig. 1,
When the air spoiler device of the above embodiment is installed
And the aerodynamic characteristics without
Was measured in. The results are shown in the diagram in Fig. 11,
The horizontal axis of is the yaw angle, and the vertical axis is the yaw moment coefficient C_YM
And lateral force coefficient C_SIs represented. Yaw moment
Number C_YMAnd lateral force coefficient C_SIs C_YM= M / (1/2 ・ ρ ・ U^Two・ S ・ L) and C_S= F / (1/2 ・
ρ ・ U^Two・ S) are aerodynamic characteristic values that have been made dimensionless.
You. Where M is yaw moment, ρ is air density, and U is
Combined wind speed, S is the front projected area of the vehicle body, L is the wheel
Rubase length, and F represents lateral force. What
Oh, this wind tunnel experiment fixed synthetic wind speed U to 100Km / h
Is being done.   In the diagram of Fig. 11, the solid line is equipped with an air spoiler for cross wind.
The aerodynamic characteristics when not attached, and the broken line is attached.
The aerodynamic characteristics are shown. As seen in Figure 11,
When the air spoiler according to this embodiment is installed,
The aerodynamic characteristics of are improved at any yaw angle. Special
At a yaw angle of 30 degrees, the yaw moment is approximately 40% and in the lateral direction.
The air spoiler of the present invention can reduce the force by about 13%.
-The ability of the device to significantly improve the crosswind stability of an automobile
It is clear that   Next, based on FIG. 12, an air spoiler according to the present invention
The relationship between the size of the vehicle and the effect of improving the aerodynamic characteristics will be described.
Fig. 12 shows the length of the air spoiler with the yaw angle fixed to 30 degrees.
Yaw moment coefficient C for height l_YMThe degree of change of
It is a diagram showing the results measured under the same conditions as in the case of Figure 1.
You. The horizontal axis of the diagram in Fig. 12 is the air relative to the vehicle width w.
The ratio of the length of the spoiler, l / w, is plotted along the vertical axis.
Factor C_YMRespectively. As you can see from Figure 12
, The yaw moment coefficient C_YMHas a ratio l / w of about 1/8 and 1
It is greatly reduced by / 4 (when it is not installed,
Approximately 21% improvement in aerodynamic characteristic values around 1/8 of total), Air
The length l of the spoiler must be at least 1/8 of the vehicle width w.
Can be said.   FIG. 13 shows another embodiment of the present invention. This implementation
The example air spoiler device also has a pair of
It has plate-shaped air spoilers 21a and 21b, and
It is shown mounted on the same type of vehicle.
In this embodiment, the air spoilers 21a and 21b each have a vehicle width w.
It has a length of about 1/4 of 500 mm and runs along the side of the car body 2.
Installed separately at both lower ends of the front so that they extend
Be killed. The configuration of this embodiment except for the above-mentioned difference is the same as that described above.
It may be similar to the embodiment, and detailed description is omitted here.
I do.   As already explained, when the car is running in cross wind,
From the corner of the front lower part of the side wind downstream of the vehicle body 2 to the side surface of the vehicle body
Adhesive rising vortex is generated along with and acts on the vehicle body.
This is a cause of increasing yaw moment and lateral force.
You. According to this embodiment, the air spoilers 21a and 21b are
These are installed on both sides of the lower front of
The sky where the iller tries to blow up from each corner to the side of the car
Block the airflow. For this reason, the direction of the rising vortex changes and peels off.
A car with cross-winding and cross wind as in the previous embodiment
It is possible to improve the running stability of the vehicle.   FIG. 14 shows the above with the air spoiler of this embodiment mounted.
Fig. 11 shows the same 1/10 model car as in Fig. 10
It is a diagram which shows the aerodynamic characteristic measured similarly. Fig. 11
Similarly, in Fig. 14, the horizontal axis is the yaw angle and the vertical axis is the yaw model.
Statement C_YMAnd lateral force C_SIs represented. In the figure,
Compared to the aerodynamic characteristics without the air spoiler
The yaw moment C at an yaw angle of 30 degrees_YMAbout 50%
The lateral force coefficient is reduced by about 20%.
The spoiler device improves the crosswind stability of the vehicle.
It is clear that it has the effect.   By the way, the air spoiler device including the conventional one
Generally, the effect of improving the aerodynamic characteristics is low at low speeds.
No. Also, in the operating position, the air spoiler is
Since it is in a protruding state, it may cause an obstacle when driving on rough roads.
Often becomes a devil. Therefore, the air spoiler of the present invention
The device automatically collects the air spoiler according to the driving condition.
It is desirable to have a control device for storing or projecting. Ah
Rui or air spoiler is made of flexible material
If you hit an obstacle, you can deform it and avoid it
It is desirable. The present invention with reference to FIGS. 15 to 27.
An example of a control device applicable to the above will be described.   Fig. 15 shows how to control the operation of the air spoiler according to the vehicle speed.
Fig. 16 is a circuit block diagram of the control device.
Electronic control unit (hereinafter referred to as ECU)
Shows roach. The control device of this example is known
The vehicle speed detection sensor 31 of the configuration is provided, and the vehicle speed detection sensor 31
Sends an electric signal corresponding to the speed to the ECU 32. ECU 32 input
The calculation shown in Fig. 16 is performed based on the vehicle speed signal, and the
An operation signal is output to the drive unit 4 for the aspoyler. sand
That is, the ECU 32 starts calculation from step 33, and step 3
The vehicle speed V is read in 4 and preset in step 35.
Spoiler operation start speed V_HRatio with (here 70 Km / h)
Make a comparison. The comparison result of step 35 is V ≧ V_HIf so,
Proceed to step 37 and project the air spoiler to the drive unit 4.
Output the signal to On the other hand, the comparison result is V <V_HIn the case of
Goes to step 36 to store the air spoiler.
No. to the drive unit 4. Then proceed to step 38
The calculation of times ends. To use such a control device
The air spoiler at high speeds with aerodynamic characteristics
Depending on the speed of the vehicle
You can pay.   17 and 18 show a control system equipped with a vehicle height detection sensor 41.
Circuit block diagram of control device and its operation flow chart of ECU42
It is shown. This controller is from the car body to the ground
That operates the air spoiler according to the change in the air gap
If the vehicle height becomes low due to uneven road surface, etc.
Prevent damage to the boiler. The vehicle height detection sensor 41 is
The configuration is good and the vehicle height signal is sent to the ECU 42. ECU42 is shown in Fig. 18.
As shown, the calculation is started from step 43 and sent at step 44.
The vehicle height data from the service 41 is read and based on this vehicle height data.
Then, in Step 45, set the distance between the bottom of the air spoiler and the ground.
Calculate C. Then, it is preset in step 46.
Air spoiler storage space C_FAnd the above-mentioned interval C is compared.
Interval C is set interval C_FIf less, air at step 47
The spoiler storage signal is output to the drive unit 4, and the step 48
Ends one calculation with. C ≧ C_FIn case of step
The process proceeds directly from step 46 to step 48 to end the calculation.   Next, detect the crosswind and control the operation of the air spoiler.
An example of the control device will be described. The controller is the circuit block shown in Fig. 19.
As shown in the lock diagram, equipped with window sensor 51 and ECU 52
You.   The window sensor 51 is a box-shaped case 1 as shown in Fig. 20a.
00 with two parallel tops for the wind at the bottom of the case 100
・ The lower channel is formed. The flow path for the wind is the case 100
The intermediate plate 101 and the lower end plate 102, and the shutter between these plates.
Defined by the flow path plate 104 supported at a predetermined interval by the switch 103
Is done. The bottom plate 102 of the case 100 is the roof of the automobile.
It is designed so that it can be installed in the proper place such as the center. Middle
The plate 101 has a circle for measuring the wind direction so that it projects into the upper flow path.
A pillar 105 and two right and left discriminating cylinders 106 and 107 are attached.
Can be In addition, the flow path plate 104 also projects into the flow path below.
The wind speed measuring cylinder 108 is attached. Each cylinder or circle
Between the lower end of the cylinder and the lower plate, no water droplets are blocked
The gap is provided.   As shown in Fig. 20b, the wind direction measuring cylinder 105 is for left / right discrimination.
It is arranged on the upstream side of the flow path with respect to the cylinders 106 and 107, and
Face the downstream side so that raindrops etc. do not easily enter the downstream side.
Is provided with a notch groove-shaped pressure introduction hole 105a.
You. The pressure introducing hole 105a penetrates the intermediate plate 101 of the case 100.
The semiconductor inside the case 100 is extended through the extending pressure extraction path 105b.
It is connected to the pressure detector 109. On the other hand, the wind speed measuring cylinder 108
Is also provided with a pressure introducing path 108a, and the pressure introducing path 108a
Pressure through the flow path plate 104, the cylinder 105 and the intermediate plate 101.
It is connected to the output device 109.   The right and left discriminating cylinders 106 and 107 are arranged in the traveling direction of the vehicle.
Circle so that it is symmetrical about the cylinder 105
It is arranged on the downstream side of the pillar 105. Each right and left discrimination cylinder
It is separated from the column 105 by a predetermined distance D. Cylinder 106 and
107 has pressure introducing holes 106a and 107a similar to the cylinder 105.
And pressure outlets (of cylinder 107 in Fig. 20a).
Connected to one pressure detector 110 only (via display only)
I have. The pressure detector 110 is guided through the pressure introducing holes 106a and 107a.
Generates an electric signal according to the difference in pressure. Pressure introducing hole 10
6a and 107a are opposite the cylinder 105 as seen in Figure 20b.
It is formed so as to open to the side.   Diameter d of each cylinder 105, 106 or 107, cylinder 105 and each left / right format
Distance D to another cylinder, and the center of cylinder 105 as the apex
The opening angles γ of the cylinders 106 and 107 will be described in detail later.
It can be determined experimentally by finding the optimum conditions. In this example, d
= 20mm, D = 32.5mm, γ = 82 degrees, and pressure introducing hole 105
The width of a, 106a, 107a is set to about 40% of the diameter d.
You.   The operation of the window sensor 51 described above will be described below. No.
As shown in Fig. 20b, when the combined wind U with yaw angle θ acts
The surface pressure P behind the wind direction measuring cylinder 105_dIs taken out
It is. In this example, the yaw angle, that is, the wind direction θ is 20b.
In the figure, the cylinder 107 is more positive than the cylinder 105, and the opposite side is
Negative. Here, it is assumed that the left and right discriminating cylinders 106 and 107.
Assuming that only the wind direction measuring cylinder 105 is provided
Then, the negative pressure P taken out from the pressure introducing hole 105a_dI care
It is constant irrespective of the wind direction θ due to flow separation. When
If the rollers have right and left discriminating cylinders 106 and 107, the wind direction θ
If the logarithm is small, it means that the flow collides with the cylinders 106 and 107.
The pressure increases due to the influence of stagnation. On the other hand, the absolute value of the wind direction θ
When the value is large, the flow is the circular cylinder 105 and each left and right discriminating cylinder.
The pressure is reduced because it is squeezed between and. as a result,
After the cylinder 105 for wind direction measurement taken out from the pressure introducing hole 105a
Surface pressure P_dIs the negative pressure according to the absolute value of the wind direction θ
It is obtained as shown in Fig. 21. Figure 21 shows the wind direction θ = 0 °
It is symmetrical about the center, and this alone is the absolute direction of the wind.
Only the value can be detected.   Therefore, in this example, right and left discrimination cylinders 106 and 107 are provided.
And is used to determine the wind direction. Left-right discrimination cylinder 106,107
Rear surface pressure P on the downstream side of₁, P_TwoThe pressure outlets 106a and 107a
The pressure difference (P₁−P_Two) Is shown in Fig. 22.
Swell. From this figure, the rear of the right and left discriminating cylinders 106, 107
Surface pressure differential pressure (P₁−P_Two) Is negative, the wind direction θ is positive
Mari The wind direction from the arrow in Fig. 20b, (P₁−P_Two) Is positive
When, the wind direction θ can be determined to be negative. Therefore, the cylinder 105,10
Cylinder from pressure introduction holes 105a, 106a and 107a of 6 and 107
Rear surface pressure P_d, P₁And P_TwoWith a pressure detector 110 etc.
If measured, it will be based on these measured values and preset data.
In addition, it is possible to detect the wind direction when the wind speed is constant. In addition,
The wind speed is not always constant in the actual running of the vehicle.
Therefore, it is necessary to make a correction corresponding to the wind speed.   In addition, Fig. 21 also includes data obtained by measuring the wind direction in the rain.
The rainfall at the time of measurement is 4.2 mm / min. Same figure
However, the measurement result in the rain shows that the negative pressure slightly decreases
It does not affect the judgment, and this example has excellent weather resistance.
It will be clear that it is excellent.   Next, how to calculate the wind direction in the wind sensor of this example
The method will be described. Fig. 23 shows the calculation flow for left / right discrimination
It is a chart. In addition, the pressure sensor of the wind sensor 10
9 and 110 have microprocessors and are used for measuring wind speed
Wind speed, wind direction and left from cylinder 108 and cylinders 105, 106, 107
Digital signal by processing each pressure value for right discrimination
However, these processing circuits have a conventional configuration.
However, detailed description is omitted here. Also,
Although not shown in Fig. 23, the
The output value M of the pressure detector when the wind direction angle is 0 ° is stored in the memory.
Remember. The arithmetic circuit calculates from step 122.
Start. Next, in step 123, the left / right discrimination output is immediately output.
The difference P between the rear surface pressures of the right and left discriminating cylinders 106 and 107₁−P_Twoof
The output value N from the semiconductor pressure detector is read. Step
In 124, the measured output value N is the same as the value M when the wind direction angle is 0 °.
It is determined whether they are the same. Measured output value at step 124
If N is the same as the set output value M, step 128
And proceed to step 129 as the wind direction is 0 ° (sign ±).
No. The value M when the measured output value N is 0 ° in step 124
If not, proceed to step 125. Step 1
At 25, the measured output value N is smaller than the value M when the angle is 0 °.
It is determined whether or not. The measured output value N is more than the set output value A
If it is larger, proceed to step 126, and then wind direction to the left.
The process proceeds to step 129 as (sign +). Measured at step 125
When it is determined that the constant output value N is smaller than the set output value M
, Go to step 127, then wind direction right (sign −)
Then proceed to step 129. In step 129 the previous step
Output the result of, and then return to step 123 to perform the next operation.
I do.   The wind direction angle calculation corresponds to the wind direction angle θ at each wind speed U.
Calculate the output value of the pressure detector as a two-dimensional map in advance.
It is stored in the memory of the circuit. Example of a two-dimensional map
The calculation flow chart is shown in Fig. 24 and in Fig. 25.
You. As can be seen in Fig. 25, the wind direction calculation operation is step 13
It starts from 0. Then, at step 131, the pressure detector 10
Read the wind velocity measurement output value U of 9 and in the next step 132 wind direction angle
Output, that is, the rear surface pressure P of the wind direction measuring cylinder 105_dBy
Read the output value of the semiconductor pressure detector. Step 133
Then, based on the wind speed measurement output value and the wind direction measurement output value,
The wind direction angle θ is calculated by following the two-dimensional map shown in Fig. 24.
Note that the actual map point in a two-dimensional map is
As it is dispersed as shown in Fig. 24, the measured values are map points.
If there is a gap between them, the interpolation calculation is performed in step 133 and the angle is calculated.
Find θ. Finally, the angle value calculated in step 134 is
The data is output and returned to step 131 again to perform the next calculation.   The signals output in this way are combined and, for example, +30
From the wind sensor 51 as a wind direction signal such as ° or -25 °
Is output. In addition, in the above-mentioned window sensor, each cylinder
Although the pressure introduction hole of is directly connected to the pressure outlet,
Creates an appropriate volume space between users to absorb sudden pressure fluctuations
To prevent raindrops or dust.
It may be configured to prevent the pressure extraction passage from being blocked by the throat.   Also, in the above description, the wind sensor 51 is
It was supposed to be attached to the root, but the installation position of the wind sensor is this
It is not limited to this. Referring to FIG. 26, the win
An example in which a sensor is provided at the tip of the rod antenna will be explained.
You.   In FIG. 26, reference numeral 150 is for a car-mounted radio
Shows the antenna rod, etc., and the lower end of the antenna rod
150a is a support case 151 fixed to the vehicle body with bolts 152 interposed.
Then, it is pivotally mounted. On the other hand, in Rod 150
A window sensor case 153 is fixed to the upper end 150b.
I have.   The case 153 includes the flow path plates 154 and 155 and the flow path plate 156.
And 157 form two channels separated by
You. On the lower surface of the flow path plate 154, for wind speed measurement similar to the above example
A cylinder 158 and a flow direction measuring cylinder are provided on the lower surface of the flow path plate 156.
And cylinder for left / right discrimination (only the cylinder for wind speed measurement 159 in Fig. 26)
Display) is provided for each. Pressure leading the pressure in cylinder 158
The introduction channel 160 is a support cable via a flexible introduction tube.
Connected to the semiconductor pressure detector 161 installed in the space 151
I have. This introduction tube is a pipe installed in the case 153.
Through the paths 162a, 162b and the antenna rod 150,
It is guided to the support case 151. Similarly, for wind direction measurement and
And the pressure introduction path of the left and right discriminating cylinders are also flexible
Pressure detector in support case 151 via force introduction tube 1
Connected to 63,164. In addition, the wind sensor of this example
Since it operates in the same way as the above example, the explanation of the operation is omitted.
Abbreviate.   In this way, the detection cable is attached to the top of the antenna rod 150.
By installing only S153, the wind will hit the car body
Prevents the detection of turbulence that may occur and provides more accurate wind direction and wind.
The speed can be detected. In addition, pressure detectors 161,163
And 164 are stored in the support case 151.
The small detection case 153 attached to the top of the
There are merits such as mold and light weight.   The crosswind data signal from the wind sensor 51 as described above
Based on this, the ECU 52 performs the arithmetic processing shown in FIG. E
The calculation of CU52 is started by step 201, and step 202
The wind direction data from the wind sensor 51 is read with. Continued
Then, in step 203, the wind direction is judged from this data. left
If the wind is blowing from the side, use step 204 to leeward
Operation signal for projecting the spoiler 1a (embodiment of FIG. 1)
And the wind side spoiler 1b at step 205.
To the corresponding drive unit 4. right
From sideways, go from step 203 to step 206
Proceed with the projecting operation signal of the leeward side spoiler 1b, and
Use the 207 to send an operation signal to store the windward spoiler 1a.
Send to each drive unit 4. On the other hand, if the wind direction angle is 0 °
For example, the operation signal to store the spoilers on both sides at step 208.
Is output, the operation proceeds to step 209 to end one calculation.
You. The air spoiler of the embodiment shown in FIG. 1 is used here.
The operation of the ECU 52 has been explained in relation to the rails 1a and 1b, but FIG.
The same operation is performed in the embodiment.   The calculation flow chart in Fig. 27 shows the crosswind downstream according to the crosswind.
Side air spoiler only, but EC
Change U to force arithmetic processing as shown in FIG. 28.
This allows the air spoilers on both sides to project at the same time.
Can be stored. ECU calculation in step 211
Starting with step 212 as in ECU 52 above
The wind direction data from the wind sensor 51 is read into. Continued
Whether or not the wind direction is zero in step 213, that is,
Determine the presence of wind. Step 21 if cross winds are present
Proceed to 4 and send the projecting motion signal to the drive device 4 of both spoilers.
Output to If there is no crosswind, start from step 213.
Proceed to 215 and issue an operation signal to store both spoilers.
Then, in step 216, one calculation is completed. 4 A control device equipped with such a window sensor and ECU
By using the air conditioner, the air according to the present invention
Spoilers can be projected or stowed at the same time or made separately.
It can be controlled dynamically.   In the above description, the control device is the vehicle speed, the vehicle height or the lateral direction.
Actuation of air spoiler according to any one condition of wind
However, some of these conditions are combined.
Alternatively, the control may be performed. For example, the controller
Controls the operation of the air spoiler depending on the vehicle height and cross wind
With this configuration, the air spoiler can be used only when there is a cross wind.
Not only can it be operated, but also in changes in vehicle height
It is also possible to prevent damage to the air spoiler.
Also, the control device is not limited to one that automatically controls.
The air when the driver determines that it is necessary by manual operation.
Have both spoilers protruding or stowed simultaneously or separately
The configuration can also be applied to the air spoiler device of the present invention.
You. [Configuration of the Invention]   The cross-air air spoiler device of the present invention has an extremely simple structure.
A simple, compact and lightweight structure for running a car in cross wind
It can improve stability and contributes greatly to its safety
I do. In addition, install an air spoiler at the front.
Rectifies the wind that flows to the bottom of the vehicle and projects to the bottom
It is possible to reduce the air resistance due to the structure or the like. Ma
Also, make the length of each air spoiler approximately 1/4 or more of the vehicle width and less than 1/2
As a result, the air spoiler is distributed over the entire vehicle width.
The yaw moment is reduced to the same level as the installed one.
As well as to form a space between the air spoilers
By arranging them separately, cooling air to the radiator is cooled.
Ventilation is possible without obstruction by the aspoiler
Becomes In addition, an air spoiler is installed over the entire lower front part.
If you place it, the physique of the air spoiler will increase, but this
According to the invention, an air spoiler for a crosswind without such a problem is provided.
Error device can be configured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an automobile equipped with an air spoiler device according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the air spoiler of the embodiment shown in FIG. Front view showing the third
Fig. 4 is a sectional side view of the air spoiler of Fig. 2, Fig. 4 is a schematic diagram for explaining the state of the yawing moment and lateral force acting on the vehicle during crosswind travel, and Figs. 5a and 5b are for crosswind. Figures 6a and 6b are respectively schematic diagrams for explaining the air flow occurring in the front of an automobile of the same type as that of Figure 1 without an air spoiler device, respectively, as shown in Fig. 5a, surface 15 and
Fig. 7 is a schematic diagram showing the state of the rising vortex flow in Fig. 16, Fig. 7 is a diagram showing the pressure state on the plane AA of Fig. 6a, and Fig. 8
Fig. 5a and 5b are pressure distribution diagrams on the side surface of the vehicle on the downstream side of crosswind, and Figs. 9a and 9b are the same drawings as Fig. 5a and 5b for the vehicle of Fig. 1, respectively. , Tenth
The figure is a pressure distribution diagram similar to that of FIG. 8 relating to the automobile of FIG. 1, FIG. 11 is a diagram showing changes in aerodynamic characteristics of the automobile due to installation of the air spoiler device of FIG. 1, and FIG. A diagram showing the relationship between the length of the air spoiler and the yaw moment coefficient of the automobile, FIG. 13 is a perspective view of an automobile equipped with another embodiment of the present invention, and FIG. 14 is an air spoiler device of FIG. Diagram showing changes in the aerodynamic characteristics of a vehicle due to mounting
FIG. 15 is a circuit block diagram of a control device equipped with a vehicle speed sensor, which is applicable to the air spoiler device of the present invention, and FIG. 16 is a calculation flow chart diagram of an electronic control unit used in the control device of FIG. FIG. 17 is a circuit block diagram of a control device equipped with a vehicle height sensor, FIG. 18 is a calculation flow chart diagram of an electronic control unit used in the control device of FIG. 17, and FIG.
FIG. 20 is a circuit block diagram of a control device equipped with a wind sensor, FIGS. 20a and 20b are sectional side views and plan views, FIG. 21 and FIG. 22, respectively, showing the window sensor of FIG.
Figure is a diagram for explaining the principle of the wind direction determination operation in the wind sensor of FIG. 19, respectively, FIG. 23 is a calculation flow chart of wind direction determination in the wind sensor of FIG. 19, and FIG. 24 is of FIG. A schematic diagram showing a two-dimensional map used for calculating the wind direction angle in the wind sensor,
FIG. 25 is a calculation flow chart for calculating the wind direction angle in the wind sensor of FIG. 19, FIG. 26 is a sectional side view showing a modification of the wind sensor of FIGS. 20a and 20b, and FIG.
19 is a calculation flow chart of the electronic control unit used in the control device of FIG. 19, and FIG. 28 is a calculation flow chart of a modification of the electronic control unit of FIG. In the figure, 1a, 1b, 21a, 21b ... Air spoiler, 2 ... Car body, 3, 3b ... Front lower end, 4 ... Drive device, 31 ...
… Vehicle speed sensor, 41 …… Vehicle height sensor, 51 …… Wind sensor.

Continuation of front page    (72) Inventor Takashi Kurahashi               1-1 1-1 Showacho, Kariya City Nippondenso Co., Ltd.               In the formula company                (56) Bibliographic Reference Shokai Sho 60-189476 (JP, U)                 Actual development Sho 61-3176 (JP, U)

Claims (1)

(57) [Claims] A pair of air spoilers installed separately at both lower ends of the front of the vehicle and projecting downward, each from the front corners of the vehicle near the point of generation of the rising eddy current generated on the side of the vehicle when cross wind acts. An air spoiler device for crosswind, comprising a flat portion extending along a front front direction of the automobile, wherein the length of the flat portion is approximately 1/4 or more and less than 1/2 of the width of the automobile. 2. The crosswind air spoiler device according to claim 1 or 2, wherein the pair of air spoilers is made of a deformable material. 3. The air spoiler device for crosswind according to any one of claims 1 to 2, wherein the pair of air spoilers are housed in a lower part of the vehicle or movably mounted so as to project from the lower part of the vehicle. The air spoiler device includes a drive device connected to the air spoiler and a control device for controlling the operation of the drive device. 4. The air spoiler device for crosswind according to claim 3, wherein the control device has a vehicle speed detection sensor,
An air spoiler device for crosswind, which controls the drive device so as to house or project the air spoiler according to a vehicle speed. 5. The crosswind air spoiler device according to claim 3, wherein the control device has a crosswind detection sensor,
An air spoiler device for side wind, which controls the drive device so that the air spoiler is simultaneously projected according to the side wind. 6. The crosswind air spoiler device according to claim 3, wherein the control device has a crosswind detection sensor,
An air spoiler device for a crosswind that controls the drive device so that only the air spoiler on the downstream side of the crosswind with respect to the vehicle is projected according to the crosswind. 7. The crosswind air spoiler device according to any one of claims 3 to 6, wherein the control device includes a vehicle height detection sensor, and stores the air spoiler according to a vehicle height. An air spoiler device for crosswind that controls the drive device so as to project. 8. The crosswind air spoiler device according to any one of claims 3 to 7, wherein the control device is manually operable to house or project the air spoiler at the same time. Spoiler device. 9. The air spoiler device for crosswind according to any one of claims 3 to 7, wherein the control device is manually operable to store or project the air spoilers individually. Spoiler device.