WO2006109893A1 - 車体下面空気流制御装置 - Google Patents
車体下面空気流制御装置 Download PDFInfo
- Publication number
- WO2006109893A1 WO2006109893A1 PCT/JP2006/308257 JP2006308257W WO2006109893A1 WO 2006109893 A1 WO2006109893 A1 WO 2006109893A1 JP 2006308257 W JP2006308257 W JP 2006308257W WO 2006109893 A1 WO2006109893 A1 WO 2006109893A1
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- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- undercover
- vehicle body
- air flow
- angle
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/02—Streamlining the undersurfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Definitions
- the present invention relates to a vehicle body lower surface air flow control device, and more particularly, to a vehicle body lower surface air flow control device that controls an aerodynamic characteristic of a vehicle by controlling an aerodynamic member provided on the vehicle body lower surface.
- a rear diffuser (either a floor pan or an undercover) is provided on the rear side of the rear wheel on the underside of the vehicle body. It has been proposed to obtain optimum aerodynamic characteristics by controlling the height of the Lya diffuser above the ground (height from the road surface).
- the ground height of the entire Rya diffuser is controlled according to the vehicle speed, the current rate, and the lateral acceleration of the vehicle (so-called lateral G), and the ground height of the Rya diffuser in the lateral direction of the vehicle is controlled. By doing so, the vehicle's straight running stability and steering stability are improved.
- the rounding angle of the Lya diffuser affects the aerodynamic performance of the vehicle and is closely related to the contradiction requirements such as road surface interference and appearance, and it is desired to obtain more optimal aerodynamic characteristics in consideration of the contradiction requirements.
- An object of the present invention is to provide a vehicle body lower surface air flow control device capable of obtaining force performance.
- a vehicle body lower surface air flow control device according to the present invention is arranged on the vehicle body lower surface on the rear side of the vehicle so that the angle with respect to the road surface in a vehicle side view can be changed.
- the empty member is disposed on the lower surface of the vehicle body on the rear side of the vehicle so that the angle with respect to the road surface in the vehicle side view can be changed.
- Power For example, as the empty cover member, an undercover that protects the lower surface of the vehicle body in the width direction of the lower surface of the vehicle body can be applied.
- a diffuser, a wind guide plate, etc. can be applied.
- the changing means changes an angle of the aerodynamic member with respect to the road surface in the vehicle side view (an angle of the aerodynamic member in the vehicle longitudinal direction with respect to the road surface). That is, by changing the angle of the aerodynamic member with respect to the road surface in a side view of the vehicle by the changing means, the force acting on the vehicle changes and the distance between the aerodynamic member and the road surface changes.
- the detecting means detects the state of the vehicle, and the control means controls the changing means based on the detection result of the detecting means. That is, by changing the angle of the aerodynamic member, it is possible to change the force acting on the vehicle according to the state of the vehicle and to change the distance between the aerodynamic member and the road surface.
- the changing means By controlling the changing means to increase the force acting on the vehicle when the aerodynamic performance of the aerodynamic member is required, it becomes possible to obtain the aerodynamic performance of the aerodynamic member, and the state of the vehicle Preventing interference between the aerodynamic member and the road surface by controlling the changing means to prevent the interference between the road surface and the aerodynamic member when it is necessary to prevent interference between the aerodynamic member and the road surface at low speeds, etc. Is possible. Therefore, it is possible to obtain optimum aerodynamic performance according to various requirements.
- the detection means detects the vehicle speed, the pressure generated by the air flow on the lower surface of the aerodynamic member, and the state of at least one vehicle of the vehicle roll, and the control means uses the detection means. Based on the detected vehicle state, the changing means may be controlled so that the aerodynamic performance of the aerodynamic member is good.
- the detection means detects the vehicle speed as the state of the vehicle
- the control means controls the changing means so that the aerodynamic performance by the blank member is good based on the vehicle speed detected by the detection means. Also good.
- the angle of the aerodynamic member with respect to the vehicle horizontal plane according to the vehicle speed for example, the angle between the aerodynamic member and the vehicle horizontal plane can be changed during high speed running and low speed running. It is sometimes possible to control the changing means so that the force that attracts the vehicle to the road surface is increased, and to control the changing means so as to prevent interference between the aerodynamic member and the road surface at a low speed.
- the detection means detects the pressure generated by the air flow on the lower surface of the aerodynamic member as the state of the vehicle, and the control means improves the aerodynamic performance of the aerodynamic member based on the pressure detected by the detection means. You may make it control a change means so that it may become. As a result, when the air flow does not flow along the aerodynamic member, the aerodynamic performance by the aerodynamic member can be maintained by controlling the changing means so that the air flow flows along the aerodynamic member. It is possible to obtain optimal aerodynamic performance.
- the detection means detects the pressure generated by the air flow at the vehicle speed and the empty member as the state of the vehicle, and the control means uses the empty force member based on the vehicle speed and the pressure detected by the detection means.
- the changing means may be controlled to obtain aerodynamic performance.
- the aerodynamic member maintains the aerodynamic performance by controlling the changing means so that the air flow flows along the aerodynamic member. It is possible to obtain optimum aerodynamic performance.
- the detection means detects the roll of the vehicle as the state of the vehicle, and the control means controls the changing means so that the aerodynamic performance by the blank member is good based on the roll detected by the detection means. You may make it do.
- the changing means so as to suppress the roll.
- the left side of the aerodynamic member is changed so that the force that attracts the vehicle to the road surface is larger than the right side.
- the right side of the aerodynamic member is more controlled than the left side of the aerodynamic member. It becomes possible to improve the property.
- control means may control the changing means during steady running.
- steady running refers to running excluding acceleration and deceleration.
- control means may control the changing means so as to change the aerodynamic member independently on the left and right.
- the vehicle height detection means for detecting the vehicle height is further provided, the ground height of the aerodynamic member is variable, the change means further changes the ground height of the aerodynamic member, and the control means detects the vehicle height detection means. Based on the result, the changing means may be further controlled to change the ground height of the aerodynamic member. In this way, by further controlling the changing means in accordance with the change in the vehicle height, it becomes possible to prevent interference between the aerodynamic member and the road surface.
- the aerodynamic member that is disposed on the lower surface of the vehicle body on the rear side of the vehicle so that the angle with respect to the road surface in the side view of the vehicle can be changed,
- the angle with respect to the road surface in the side view of the vehicle can be changed,
- FIG. 1A and 1B are views showing a state in which the vehicle body bottom surface air flow control device according to the first embodiment of the present invention is attached to the vehicle body.
- FIG. 2 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the first embodiment of the present invention.
- FIG. 3 is a graph showing the relationship between the undercover round-up angle and high-speed stability.
- FIG. 4 is a flowchart showing an example of processing performed in undercover control ECU of the vehicle body bottom surface air flow control device according to the first embodiment of the present invention.
- FIG. 5 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the second embodiment of the present invention.
- FIG. 6 is a flowchart showing an example of processing performed by the undercover control ECU of the vehicle body bottom surface air flow control device according to the second embodiment of the present invention.
- FIG. 7 is a view showing a state in which the vehicle body bottom surface air flow control device according to the third embodiment of the present invention is attached to the vehicle body.
- FIG. 8 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the third embodiment of the present invention.
- FIG. 9 is a graph showing threshold values for driving the undercover.
- FIG. 10 is a flowchart showing an example of processing performed in undercover control ECU of the vehicle body lower surface airflow control device according to the third embodiment of the present invention.
- FIGS. 11A and 11B are diagrams for explaining an example of the control of the vehicle body lower surface air flow control device according to the third embodiment of the present invention.
- FIG. 12 is a view showing a state in which the vehicle body bottom surface air flow control device according to the fourth embodiment of the present invention is attached to the vehicle body.
- FIG. 13 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the fourth embodiment of the present invention.
- FIG. 14 is a flowchart showing an example of processing performed in undercover control ECU of the vehicle body lower surface air flow control device according to the fourth embodiment of the present invention.
- FIG. 15 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the fifth embodiment of the present invention.
- FIG. 16 is a flowchart showing an example of processing performed in undercover control ECU of the vehicle body lower surface airflow control device according to the fifth embodiment of the present invention.
- FIG. 17 is a schematic diagram showing a case in which different rounding angles are set on the left and right sides of the under cover by the vehicle body lower surface air flow control device according to the fifth embodiment of the present invention.
- FIG. 18 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the sixth embodiment of the present invention.
- FIG. 19 is a flowchart showing an example of processing performed by the undercover control ECU of the vehicle body bottom surface air flow control device according to the sixth embodiment of the present invention.
- FIG. 1A and 1B are views showing a state in which a vehicle body bottom surface air flow control device according to a first embodiment of the present invention is attached to a vehicle body.
- the vehicle body bottom surface air flow control device includes an undercover 10 and a undercover 10 formed of a flexible material such as resin. And changing means for driving 1 and 2.
- the under cover 10 is rounded up to the rear under panel 3 2 on the underside of the vehicle body on the rear side of the rear tire 30.
- the under cover 10 is rounded up to the ground height and horizontal surface of the under cover 10. It is arranged on the vehicle body via a changing means 12 for changing the angle (angle formed between the under panel 10 and the road surface in a side view of the vehicle), and protects the lower surface of the vehicle body in the vehicle lower surface width direction.
- the changing means 1 2 supports the under cover 10 at four locations.
- each changing means 1 2 is formed of a so-called rack and pinion, and is designed to be used in a manner such as a mo-yu.
- the rack rod 18 is moved in the vertical direction of the vehicle, and the ground cover of the under cover 10 and the vertical angle with respect to the horizontal plane are changed.
- the ground cover of the undercover 10 is changed, and the driving amount of the two actuate evenings 14 on the front side of the vehicle and 2 on the rear side of the vehicle are changed.
- the rounding angle is changed by changing the drive amount of each one of the two actuators 14 to different drive amounts.
- the changing means 12 is not limited to this, and other configurations such as a hydraulic actuate can be applied.
- FIG. 2 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the first embodiment of the present invention.
- the above-mentioned actuyue 14 is an undercover.
- a vehicle speed sensor 22 is connected to the undercover control ECU 20, so that the traveling speed (vehicle speed) of the vehicle is input.
- the undercover control ECU 20 corresponds to each actuator according to the vehicle speed.
- Drive 1.4 to control the undercover 10 ground clearance and round-up angle.
- the under cover control E C U 20 stores the drive amount of each actuator 14. Specifically, as shown in Fig. 1A, the drive amount of each actuator 14 with the ground clearance of the undercover 10 being H 1 and the rounding angle of the undercover 10 relative to the horizontal plane at this time being 1
- the undercover control ECU 20 stores the drive amount of each actuator 14 with the ground clearance of the undercover 10 being H 2 and the rounding angle of the undercover 10 with respect to the horizontal plane being ⁇ 2 at this time. Yes.
- the relationship between the round-up angle and the high-speed stability is shown in Fig. 3. As the round-up angle ⁇ 2 and the undercover ground height 2, values with good high-speed stability are selected.
- the undercover control ECU 20 also stores a predetermined vehicle speed threshold value for controlling each of the actuators 14 according to the vehicle speed, and uses the vehicle speed threshold value to determine whether or not the vehicle speed is high. And the drive of each actuator 14 is controlled based on the result of the determination.
- FIG. 4 is a flowchart showing an example of processing performed in the undercover control ECU 20 of the vehicle body lower surface air flow control device according to the first embodiment of the present invention.
- step 100 the vehicle speed is detected.
- the vehicle speed input from the vehicle speed sensor 2 2 is detected, and the routine proceeds to step 100.
- step 100 it is determined whether the vehicle speed is high. This determination is made by determining whether or not the detected vehicle speed is equal to or greater than the vehicle speed threshold value stored in the undercover control ECU 20. If the determination is affirmative, the routine proceeds to step 104. However, if the result is negative, the procedure goes to Step 1 06.
- step 10 4 each actuator 14 is controlled so that the ground clearance of the undercover 10 is H 2 and the rounding angle of the undercover 10 is ⁇ 2, returning to step 1 0 0
- step 104 the undercover 10 is controlled to move to the position indicated by the dotted line in FIG.
- the undercover 10 moves to a state where the high-speed stability is good. Therefore, the force of the vehicle body being sucked into the road surface by the air flow under the undercover 10 acts, and high-speed stability can be ensured.
- step 106 each actuator 14 is controlled so that the ground clearance of the undercover 10 is H1, and the rounding angle of the undercover 10 is ⁇ 1, and the process returns to step 100.
- the undercover 10 is controlled to move to the position indicated by the solid line in FIG.
- the rounding angle and the ground height of the undercover 10 have contradictory requirements such as interference with the road surface and appearance.
- the undercover 10 is located above the contralateral requirement line shown in FIG. 1A. Is preferably arranged.
- undercover control is performed as described above, so that the undercover 10 is controlled to be disposed above the anti-reverse requirement line when traveling at low speed, and at high speed when traveling at high speed.
- the undercover 10 is controlled so as to move to a position where the high-speed stability is high (round-up angle ⁇ 2, ground height 2). Therefore, high-speed stability is ensured by focusing more on stability than anti-traffic requirements at high speeds, and the anti-reverse requirements are met at low speeds. .
- the under cover 10 is turned off by the four changing means 12.
- the raising angle and ground clearance are changed.
- the present invention is not limited to this.
- the front two changing means 1 2 FR and 1 2 FL are fixed, that is, only support the vehicle body and the undercover 10.
- the rear two changing means 1 2 RR, 1 2 RL may be controlled only by the angle of cut-up, the front two changing means 1 2 FR, 1 2 FL are fixed, and the rear side is 1 It is possible to control only the rounding angle with one changing means, or the two rear changing means 1 2 RR and 1 2 RL are fixed, and the two front changing means 1 2 FR and 1 2 FL only the rounding angle
- the rear two change means 1 2 RR and 1 2 RL may be fixed, and the front two change means 1 2 FR and 1 2 FL may control only the rounding angle. .
- vehicle body lower surface air flow control device according to a second embodiment of the present invention. Note that the state in which the vehicle body bottom surface airflow control device according to the second embodiment is attached to the vehicle body is the same as that in the first embodiment, and thus the description thereof is omitted.
- the vehicle body lower surface airflow control device according to the second embodiment is configured so that the ground height of the undercover 10 is further changed in accordance with the change in the vehicle height with respect to the vehicle body lower surface airflow control device according to the first embodiment. It is a thing. .
- FIG. 5 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the second embodiment of the present invention. The same components as those in the first embodiment will be described with the same reference numerals.
- the actuator 14 is connected to the under cover control ECU 24 that controls the position of the under cover 10.
- the front right side of the character is the FR side actuator 14 FR
- the front left side is the FL side actuator 14 FL
- the rear right side is the RR.
- the side-actuator 1 4 RR and the left-side back actuator are shown as the RL side actuator 1 4 RL, but they are designated as the actuator 14 unless otherwise specified in the following description.
- a vehicle speed sensor 22 is connected to the under cover control ECU 2.4, and the vehicle traveling speed (vehicle speed) is input. 1 to drive the undercover 10 and control the ground height and the upright angle.
- the under cover control E C U 2 4 stores the drive amount of each actuator 14. Specifically, as shown in Fig. 1A, the drive amount of each actuator 14 whose ground cover of undercover 10 is H1 and the rounding angle of undercover 10 relative to the horizontal plane at this time is ⁇ 1
- the undercover control ECU 2 4 stores the drive amount of each actuator 14 whose undercover 10 has a ground clearance of ⁇ 2, and the undercover 10 with respect to the horizontal plane at this time has a round-up angle ⁇ 2 of ⁇ 2.
- the relationship between the round-up angle and the high-speed stability is shown in Fig. 3. For the round-up angle ⁇ 2 and the undercover ground height 2, select values with good high-speed stability.
- the undercover control ECU 2 4 stores a predetermined vehicle speed threshold value for controlling each of the actuators 14 according to the vehicle speed, and the vehicle speed is increased using the threshold value of the vehicle speed. It is determined whether or not each actuator 14 is driven based on the determination result.
- a vehicle height sensor 26 that detects the vehicle height is connected to the undercover control ECU 24, and the vehicle height detection sensor 26 detects the vehicle height. The result is input to the undercover control ECU 24.
- the under cover control E C U 24 changes the ground height of the under cover 10 by controlling each actuator 14 according to the vehicle height change from the detection result of the vehicle height detection sensor 26.
- FIG. 6 is a flowchart showing an example of processing performed by the under cover control ECU 24 of the vehicle body lower surface air flow control device according to the second embodiment of the present invention. The same processes as those in the first embodiment will be described with the same reference numerals.
- step 100 the vehicle speed is detected.
- the vehicle speed input from the vehicle speed sensor 2 2 is detected, and the routine proceeds to step 100.
- step 100 it is determined whether the vehicle speed is high. This determination is made as to whether or not the detected vehicle speed is equal to or higher than the vehicle speed threshold value stored in the undercover control ECU 20. If the determination is affirmative, the process proceeds to step 1004. If the determination is negative, the process proceeds to step 106.
- step 10 4 each actuator 14 is controlled so that the ground clearance of the undercover 10 is H 2 and the rounding angle of the undercover 10 is ⁇ 2, returning to step 1 0 0
- step 104 the undercover 10 is controlled to move to the position indicated by the dotted line in FIG.
- the undercover 10 moves to a state with good high-speed stability, so that the force of the vehicle body being sucked to the road surface by the air flow under the undercover 10 acts, and high-speed stability can be ensured.
- step 1 0 6 each actuator 14 is controlled so that the ground clearance of undercover 10 is H 1 and the rounding angle of undercover 10 is ⁇ 1, and step 1 0 0 is It returns and the above-mentioned processing is repeated.
- step 106 the undercover 10 is controlled to move to the position indicated by the solid line in FIG.
- the rounding angle and the ground height of the undercover 10 have contradictory requirements such as interference with the road surface and appearance.
- the undercover 10 is located above the contralateral requirement line shown in FIG. 1A. Is preferably arranged.
- the undercover control is performed as described above, so that the undercover 10 is controlled to be disposed above the anti-reverse requirement line during low speed traveling, and the high speed traveling during high speed traveling.
- the undercover 10 is controlled so as to move to a position where the high-speed stability is high (round-up angle ⁇ 2, ground height 2).
- step 1 0 8 the vehicle height is detected. That is, the vehicle height input from the vehicle height sensor 26 is detected, and the process proceeds to step 110. -In step 1 1 0, it is determined whether the vehicle height has increased. The judgment was detected This is done by determining whether the vehicle height has risen from the previous detection.If the determination is negative, the process proceeds to step 1 1 8 and the determination of step 1 1 0 is affirmed. Go to step 1 1 2.
- Step 1 1 2 it is determined whether or not the vehicle height has increased only on one side. If the determination is negative, the process proceeds to Step 1 1 4 so that the undercover 10 is lowered (undercover 1 (If the ground clearance of 0 is low) Each actuator 14 is driven to return to step 1 0 0, and if the determination of step 1 1 2 is affirmed, go to step 1 1 6 Then, each actuator 14 is driven so that the undercover 10 is lowered only when the vehicle height is raised, and the process returns to step 100. That is, when the vehicle height rises, the undercover 10 is controlled so that it falls, so the ground of the undercover 1 10 is maintained at a substantially constant height and optimal aerodynamic performance can be obtained. .
- Step 1 1 4 it is determined whether the vehicle height has dropped. The determination is made by determining whether or not the detected vehicle height has fallen from the previous detection. If the determination is negative, the process returns to step 100, and the above processing is repeated. If the determination at step 1 1 4 is affirmative, the process proceeds to step 1 2 0.
- Step 1 2 it is determined whether or not the vehicle height has been lowered on only one side. If the determination is negative, the process proceeds to Step 1 2 2 and the undercover 10 is raised (undercover 10 is grounded). Each actuator 14 is driven to return to step 1 0 0, and if the determination of step 1 2 0 is affirmed, the process proceeds to step 1 2 4 and the vehicle height decreases. Each of the actuators 14 is driven so that the undercover 10 is raised only for those who have done so, and the process returns to step 100. That is, when the vehicle height is lowered, the undercover 10 is controlled to be raised, so that the ground clearance of the undercover 10 can be kept constant and optimum aerodynamic performance can be maintained.
- the actuator 14 is driven to move the undercover 10 even when the vehicle height changes, so that more optimal aerodynamic performance can be obtained, and at the time of vehicle bumps, etc. Interference of the undercover 10 with the road surface can be prevented.
- FIG. 7 is a view showing a state in which the vehicle body bottom surface air flow control device according to the third embodiment of the present invention is attached to the vehicle body.
- the same components as those in the first embodiment will be described with the same reference numerals.
- the vehicle body lower surface air flow control device is similar to the first embodiment.
- the undercover 10 is formed of a flexible material such as resin and the undercover. And changing means for driving 1 0 1 2.
- the undercover 10 is disposed on the underpanel 32 on the lower surface of the vehicle body on the rear side of the vehicle with respect to the rear 30 via the four changing means 12.
- the two changing means 1 2 on the front side simply consist of a support member 1 3 supported on the vehicle body, and the two changing means 1 2 on the rear side are the same changing means as in the first embodiment.
- the rounding angle of the under cover 10 is changed by two changing means 12.
- each of the changing means 12 is configured to rotate the pinion gear 16 by means of an actuator 14 such as a motor, thereby moving the rack rod 18 in the vertical direction of the vehicle. Change the round-up angle of 1 1 0.
- FIG. 8 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the third embodiment of the present invention. The same components as those in the first embodiment will be described with the same reference numerals.
- the vehicle body lower surface air flow control device is connected to the under cover control E C U 3 4 in which the above-described actuator 14 controls the position of the under cover 10.
- the respective actuators 14 of the two changing means 12 are controlled in the same way, and therefore, they are shown as one actuator 14 in FIG.
- a vehicle speed sensor 22 is connected to the undercover control ECU 3.4 so that the traveling speed (vehicle speed) of the vehicle is input.
- Andakaba The one control ECU 3 4 detects the acceleration / deceleration state of the vehicle based on the signal input from the vehicle speed sensor 2 2.
- an acceleration sensor or a jail sensor may be connected to detect the acceleration / deceleration of the vehicle.
- the pressure sensor 28 is connected to the under cover control ECU 3 4, the detection result of the pressure sensor 28 is input, and the actuator 14 is controlled according to the detection result of the pressure sensor 28. It ’s like that.
- the under cover control ECU 3 4 detects the air flow separation on the under cover 10 by detecting the pressure, and when the air flow separation is detected, the under cover 10 10 By changing the round-up angle to prevent separation, optimum aerodynamic performance is obtained.
- the undercover control ECU 3 4 stores a threshold value for driving the actuator 14, and as shown in FIG. 9, the low vehicle speed and low pressure side steady region (undercover 1 (The state in which the air flow on the bottom surface flows along the under cover 10) and the separation area on the high vehicle speed and high pressure side (the state in which the air flow on the bottom surface of the under cover 10 is separated from the under cover 10) Is stored as a threshold value, and the actuator 14 is driven based on the threshold value to control the round-up angle of the undercover 10.
- the threshold value has a predetermined range in order to prevent chatting between the steady region and the separation region.
- the angle of raising the under cover 10 is changed using the two changing means 1 2.
- the under cover 10 is raised by providing one changing means 1 2 at the center of the vehicle body or the like. The angle may be changed.
- FIG. 10 is an undercover control ECU 34 of the vehicle body bottom surface air flow control device according to the third embodiment of the present invention. It is a flowchart which shows an example of the process performed.
- step 1 5 the vehicle speed is detected. That is, the vehicle speed input from the vehicle speed sensor 2 2 is detected, and the process proceeds to Step 1 5 2.
- step 1 5 2 it is determined whether or not the vehicle is accelerating. The determination is made by monitoring the vehicle speed input from the vehicle speed sensor 22 2 and determining whether or not the vehicle is in an acceleration state. If the determination is negative, the process returns to step 1 5 0. If the above process is repeated and the determination is affirmative, the process proceeds to step 15 4.
- step 1 5 it is determined whether the vehicle is decelerating. The determination is made by monitoring the vehicle speed input from the vehicle speed sensor 22 and determining whether or not the vehicle is decelerating. If the determination is negative, the process returns to step 1 5 0. If the above process is repeated and the determination is affirmative, the process proceeds to step 15 6.
- step 1 5 6 the pressure under the undercover 10 is detected. That is, the pressure input from the pressure sensor 28 is detected.
- Step 1 5 8 it is determined whether or not the under cover lower surface pressure is in the peeling region. The determination is made by determining whether or not the vehicle is in the separation region shown in FIG. 9 from the vehicle speed and pressure input to the undercover control ECU 34. If the determination is affirmative, step 16 After shifting to 0 and the actuator 14 is driven so that the round-up angle of the undercover 10 is reduced, the process returns to step 1510 and the above-described processing is repeated.
- step 1 6 2 it is determined whether or not the under cover lower surface pressure is in the steady region. The determination is made by determining whether or not the vehicle is in the steady region shown in FIG. 9 based on the vehicle speed and pressure input to the undercover control ECU 34. If the determination is affirmative, step 1 6 After the actuator 14 is driven so as to shift to 4 so that the round-up angle of the undercover 10 is increased (returned to the original position), the process returns to step 1510 and the above processing is repeated. In step 1 6 4, when the undercover 10 is at the original rounding angle, the processing is skipped and the process returns to step 1 5 0. If negative, step 1 6 0 Returning to FIG.
- the vehicle is temporarily pitched due to acceleration / deceleration.
- the undercover 10 is not changed during the acceleration / deceleration. .
- the pressure under the undercover 10 when running on an undulating road surface where the convex road surface and the concave road surface are repeated, the pressure under the undercover 10 is as shown in Fig. 11B on the convex road surface.
- the rounding angle of the undercover 10 when the air flowing between the undercover 10 and the road surface is peeled off, the rounding angle of the undercover 10 is reduced. Therefore, as shown by the dotted line in FIG. 11B, the increase in pressure under the undercover 10 is suppressed, so that the air flowing between the undercover 10 and the road surface is reduced. It can flow along the undercover 10 and improve the stability of the vehicle. Therefore, the aerodynamic performance of the under cover 10 can be maintained by changing the rounding angle of the under cover 10 according to the pressure change under the under cover 10.
- the round-up angle of the under cover 10 is controlled based on the vehicle speed and pressure.
- the round-up angle of the under cover 10 may be controlled based only on the pressure. Les.
- FIG. 12 is a view showing a state in which the vehicle body bottom surface air flow control device according to the fourth embodiment of the present invention is attached to the vehicle body.
- the same components as those in the first to third embodiments will be described with the same reference numerals.
- the vehicle body bottom surface air flow control device according to the fourth embodiment is a combination of the first embodiment and the third embodiment. That is, the vehicle body lower surface airflow control device according to the fourth embodiment of the present invention includes an undercover 10 formed of a flexible material such as resin and the undercover 10, as in the first embodiment. It is comprised by the change means 1 2 to drive.
- the under cover 10 is provided on the rear under panel 3 2 on the lower surface of the vehicle body on the rear side of the vehicle with respect to the rear cover 30, as shown in FIG. It is arranged on the vehicle body via changing means 12 for changing the rounding angle of the undercover 10 with respect to the horizontal plane.
- each changing means 12 supports the under cover 10 at four locations.
- each changing means 12 is constituted by a so-called rack and pinion, and is provided with a motor.
- the rack rod 18 By rotating the pinion gear 16 by means of an actuator 14 such as the above, the rack rod 18 is moved in the vertical direction of the vehicle to change the undercover 10 height above the ground and the horizontal angle.
- the ground height of the undercover 10 is changed, the driving amount of the two actuators 1 2 on the front side of the vehicle, and the two actuators on the rear side of the vehicle 1 4
- the rounding angle is changed by changing the driving amount to different driving amounts.
- the changing means 12 is not limited to this, and other actuators may be used.
- the under cover 10 is provided with a pressure sensor 28 for detecting the pressure generated by the air flow flowing between the under cover 10 and the road surface, as in the third embodiment.
- FIG. 13 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the fourth embodiment of the present invention.
- the same components as those in the first and third embodiments will be described with the same reference numerals.
- the above-described actuator 14 is connected to an undercover control ECU 36 that controls the position of the undercover.
- Figure 1 3 Out of the four actuators, the front right actuator is the FR side actuator 14 FR, the front left actuator is the FL side actuator 1 4 FL, the rear right side is the RR side actuator 1 4 RR, and the rear The left side actuator is shown as RL side actuator 14 RL, but it will be written as architect 14 unless otherwise specified in the following description.
- a vehicle speed sensor 2 2 is connected to the under cover control E C U 3 6 so that the traveling speed (vehicle speed) of the vehicle is input.
- the undercover control ECU 3 6 detects the acceleration / deceleration state of the vehicle based on the signal input from the vehicle speed sensor 22.
- an acceleration sensor or a jail sensor may be connected to detect the acceleration / deceleration of the vehicle.
- the pressure sensor 28 is connected to the under cover control ECU 36, the detection result of the pressure sensor 28 is input, and the actuator 14 is controlled according to the detection result of the pressure sensor 28. It ’s like that.
- the under cover control ECU 36 detects the air flow separation on the bottom surface of the under cover 10, and when the under cover is peeled off, changes the rounding angle of the under cover 10 to suppress the separation, Optimum aerodynamic performance is obtained.
- the undercover control ECU 36 stores the drive amount of each actuator 14, and the drive amount is the same as in the first embodiment, as shown in FIG.
- the ground clearance of 0 is H 1
- the drive amount of each actuator 14 whose rounding angle of the under cover 10 relative to the horizontal plane is ⁇ 1 and the ground clearance of the under cover 10 is ⁇ 2
- the undercover control ECU 36 stores the drive amount of each actuator 14 whose rounding angle of the under cover 10 with respect to the horizontal plane is 2.
- the undercover control ECU 3 6 has an actuator 10 for driving the actuator 10
- the threshold values for driving each of the actuators 14 are the same as in the third embodiment, as shown in FIG.
- the boundary between the high vehicle speed and the separation area on the high pressure side is stored as a threshold value.
- FIG. 14 is a flowchart showing an example of processing performed in the under cover control E C U 36 of the vehicle body lower surface air flow control device according to the fourth embodiment of the present invention.
- step 200 the vehicle speed is detected. That is, the vehicle speed input from the vehicle speed sensor 2 2 is detected, and the process proceeds to Step 2 02.
- step 2 0 2 it is determined whether or not the vehicle is accelerating. The determination is made by monitoring the vehicle speed input from the vehicle speed sensor 22 2 and determining whether or not the vehicle is in an acceleration state. If the determination is negative, the process returns to Step 2 0 0. If the above process is repeated and the determination is affirmative, the routine proceeds to step 204.
- Step 2 0 4 it is determined whether or not the vehicle is decelerating. The determination is made by monitoring the vehicle speed inputted from the force of the vehicle speed sensor 22 2 and determining whether or not the vehicle is decelerating. If the determination is negative, the process returns to step 200. If the above process is repeated and the determination is affirmative, the routine proceeds to step 206.
- step 2 06 the pressure under the under cover 10 is detected. That is, the pressure input from the pressure sensor 28 is detected.
- step 208 it is determined whether or not the under cover lower surface pressure is in the peeling region. The determination is made by determining whether the vehicle is in the separation region shown in FIG. 9 from the vehicle speed and pressure input to the undercover control ECU 36. If the determination is affirmative, step 2 1 After each actuator 14 is driven so that the ground clearance of the undercover 10 is H 2 and the rounding angle of the undercover 10 is ⁇ 2, the process returns to step 2 0 0. The above process is repeated. That is, in step 2 1 0, the under cover 10 moves to the position indicated by the dotted line in FIG. Controlled.
- step 2 1 2 determines whether or not the under cover lower surface pressure is in a steady region. The determination is made based on the vehicle speed and pressure input to the undercover control ECU 36, whether or not the vehicle is in the steady region shown in FIG. 9. If the determination is affirmative, the flow proceeds to Step 2 14. After each actuator 14 is driven so that the ground clearance of the undercover 10 is H 1 and the round-up angle of the undercover 10 is ⁇ 1, the process returns to step 2 0 0 to perform the above processing. Repeated. That is, in step 2 14, the undercover 10 is controlled to move to the position indicated by the solid line in FIG.
- step 2 1 2 determines whether the determination in step 2 1 2 is negative. If the determination in step 2 1 2 is negative, the process returns to step 2 0 0 as it is and the above process is repeated.
- the ground clearance of the under cover 10 is lowered and rounded up. Reduce the angle to control the air flow along the under cover 10 and raise the under cover of the under cover 10 when the pressure under the under cover 10 decreases to a steady state. At the same time, increase the rounding angle to return the rounding angle of the undercover 10 to the original state. This makes it possible to obtain optimum aerodynamic performance as in the above embodiments.
- a vehicle body lower surface air flow control device according to a fifth embodiment of the present invention will be described. Note that the state of the vehicle body bottom surface airflow control device according to the fifth embodiment attached to the vehicle body is the same as that of the first embodiment, and thus the description thereof is omitted.
- the vehicle body lower surface airflow control device changes the ground height and the upright angle of the undercover 10 separately on the left and right according to the roll of the vehicle.
- the undercover 10 is a resin Since it is molded with a kisible material, the right and left actuators 14 can be driven differently, so that the ground clearance and the round-up angle of the right and left undercovers 10 can be different to suppress rolls. It is intended to be controlled.
- FIG. 15 is a block diagram showing the configuration of the control system of the vehicle body bottom surface air flow control device according to the fifth embodiment of the present invention. The same components as those in the first embodiment will be described with the same reference numerals.
- the vehicle body lower surface airflow control device includes an actuator 14 connected to an undercover control ECU 3 8 that controls the position of the undercover 10.
- the front right actuator is the FR side actuator 14 FR
- the front left side actuator is the FL side actuator 14 FL
- the rear right side actuator is the RR side actuator 1 4 RR
- the rear left side actuator is the RL side actuator 1 4 Shown as RL, but marked as “actuator 14” unless otherwise noted in the following description.
- a roll detection sensor 40 is connected to the undercover control ECU 3 8 according to the fifth embodiment of the present invention so that the vehicle roll is detected and input.
- each actuator 14 is driven to control the ground height and the round-up angle of the undercover 10.
- the undercover control ECU 3 8 stores the drive amount of each actuator 14. More specifically, as in the first embodiment, as shown in FIG. 1A, the height of the ground cover of the undercover 10 is H1, and the rounding angle of the undercover 10 relative to the horizontal plane at this time is 1. The driving amount of the actuator 10 and the ground cover of the under cover 10 are H 2 The driving amount of each actuator 14 whose rounding angle of the under cover 10 relative to the horizontal plane at this time is ⁇ 2 is the under cover control ECU 3 8 Is remembered. In the present embodiment, the rounding angle and the ground height are controlled so that the drive amounts differ between the right actuators 14 FR and 14 RR and the left actuators 14 FL and 14 RL.
- Figure 16 shows the present invention.
- 16 is a flowchart showing an example of processing performed by an undercover control ECU 38 of the vehicle body lower surface air flow control device according to the fifth embodiment.
- step 2 5 a roll is detected. That is, the roll input from the roll detection sensor 40 is detected, and the process proceeds to Step 2 52.
- Step 2 5 2 it is determined whether or not a roll has occurred. The determination is made by determining whether or not a roll has occurred in the vehicle based on a signal input from the roll detection sensor 4 0 1. If the determination is negative, go to Step 2 5 4. Transition.
- step 2 5 4 each actuator 10 is driven so that the undercover 10 is at the reference position (predetermined reference ground height and round-up angle), and the above processing is repeated by returning to step 2 5 0. It is. Step 2 5 4 is skipped if the under cover 1 0 is already in the reference position, and returns to step 2 5 0 as it is.
- step 2 5 4 The process moves to 6, and it is determined whether or not the generated roll is the right roll. This determination is made by determining whether the roll detection result input from the roll detection sensor 0 4 is a right roll or a left roll. If it is a right roll, the determination is affirmed and the process proceeds to step 2 5 8. If it is the left roll, the determination is negative and the routine proceeds to step 2600.
- Step 2 5 8 the left actuators 14 FL and 14 RL are driven so that the ground clearance of the undercover 10 is H 2 and the rounding angle of the undercover 10 is ⁇ 2, and the undercover 1
- the right side actuator 14 FR, 14 RR is driven so that the ground clearance of 0 is H 1 and the undercover angle of 10 is ⁇ 1, and the above processing is repeated by returning to step 2 5 0. It is. That is, as shown by the one-dot chain line in FIG. 17, the under cover 10 is moved to different positions on the left and right (the ground height and the vertical angle), and the under cover 10 is made of a flexible material.
- Step 2 60 the left side actuator 14 FL, 14 RL is driven so that the ground clearance of the under cover 10 is H 1 and the rounding angle of the under cover 10 is ⁇ 1.
- the right side actuator 1 4 FR, 14 RR is driven so that the ground clearance of the under cover 10 is H 2 and the round-up angle of the under cover 10 is ⁇ 2, and step 2 5 0 It returns and the above-mentioned processing is repeated. That is, as shown by the dotted line in FIG. 17, the under cover 10 is moved to different positions on the left and right (the ground height and the vertical angle), and the under cover 10 is made of a flexible material.
- the right side of 0 is H 2 as shown in Fig.
- the force that attracts the vehicle to the road surface is greater on the right side of the undercover 10 than on the left side, and the force acts in a direction in which the vehicle is stabilized, thereby improving the stability during the left roll.
- the vehicle posture during the roll is changed.
- the aerodynamic performance of the undercover 10 can be applied in the direction of stabilization, and the vehicle handling stability can be improved.
- the ground clearance and the rounding angle of the undercover 10 are changed as in the first embodiment, but only the rounding angle of the undercover 10 is changed as in the third embodiment. It may be changed.
- a vehicle body lower surface air flow control device according to a sixth embodiment of the present invention will be described.
- the state of the vehicle body bottom surface airflow control device according to the sixth embodiment attached to the vehicle body is the same as that of the third embodiment, and the description thereof is omitted.
- the vehicle body bottom surface airflow control device detects the vehicle speed, the pressure under the undercover 10, and the roll of the vehicle, and controls the round-up angle of the undercover 10 according to each detection result. Is.
- FIG. 18 shows the control system of the underbody airflow control device according to the sixth embodiment of the present invention. It is a block diagram which shows a structure. The same components as those in the first to fifth embodiments will be described with the same reference numerals.
- the vehicle body lower surface air flow control device is connected to the under cover control E C U 4 2 in which the above-described actuator 14 controls the position of the under cover 10.
- the right side of the vehicle changing means 12 2 is designated as the RH side actuator 14 RH
- the left side This actuator is indicated as LH side actuator 14 LH.
- actuator 14 it is indicated as actuator 14.
- a vehicle speed sensor 2 2 is connected to the undercover control ECU 4 2, and the vehicle traveling speed (vehicle speed) is input, and each actuator 14 is driven according to the vehicle speed. Controls the rounding angle of the undercover.
- the pressure sensor 28 is connected to the undercover control ECU 4 2, and the detection result of the pressure sensor 28 is input, and the actuator 14 is controlled according to the detection result of the pressure sensor 28. It is like that.
- a roll detection sensor 40 is connected to the under cover control ECU 4 2 so that the roll of the vehicle is detected and inputted, and each actuator 14 is driven according to the mouthful.
- the undercover control ECU 4 2 has an undercover angle of ⁇ 1, 2 (see FIG. 7) to drive and control each actuator 14 according to the detection result of each sensor.
- the drive amount of the actuator 14 is stored, and the drive control of the actuator 14 is performed according to the drive amount.
- the rounding angle ⁇ 1 of the under cover 10 is a rounding angle for low speed
- the rounding angle ⁇ 2 for the under cover 10 is a rounding angle for high speed.
- the undercover control ECU 4 2 stores a predetermined vehicle speed threshold value for controlling each of the actuators 14 according to the vehicle speed.
- the vehicle speed threshold is used to control the vehicle speed. It is determined whether or not the speed is high, and the drive of each actuator 14 is controlled based on the determination result.
- the under cover control ECU 3 4 has an actuator 14 for driving it.
- the boundary between the low vehicle speed and low pressure side steady region and the high vehicle speed and low pressure side separation region is stored as a threshold value.
- the actuator 14 By driving the actuator 14 based on the threshold value, the round-up angle of the undercover 10 is controlled.
- FIG. 19 is a flowchart showing an example of processing performed in the under cover control E C U 4 2 of the vehicle body lower surface air flow control device according to the sixth embodiment of the present invention.
- each sensor value is detected. That is, the detection result of each sensor input from the vehicle speed sensor 2 2, the pressure sensor 2 8, and the roll detection sensor 40 is detected, and the process proceeds to Step 3 0 2.
- step 300 it is determined whether the vehicle speed is high. The determination is made by determining whether the detected vehicle speed is equal to or higher than the threshold value of the vehicle speed stored in the undercover control ECU 42. If the determination is affirmative, the process proceeds to step 300. If not, go to step 3-4.
- step 3 0 4 it is determined whether or not the round-up angle of the undercover 10 is smaller than ct 1. If the determination is affirmative, the process proceeds to step 3 0 6. Returning to 300, the above-described processing is repeated.
- step 30 the actuator 14 is driven to increase the rounding angle until the rounding angle of the undercover 10 becomes ⁇ 1, the rounding angle is increased, and the above process is repeated by returning to step 300. That is, at low speed, the rounding angle of the undercover 10 becomes ⁇ 1 as shown in FIG. 7, and the aerodynamic performance by the undercover 10 can be obtained by the rounding angle ⁇ 1 set for low speed.
- step 3 0 8 it is determined whether or not the round-up angle of the undercover 10 is greater than ⁇ 2. This determination is made, for example, by detecting the driving amount of the actuator 10. If the determination is negative, the process proceeds to step 3 10 until the round-up angle of the undercover 10 becomes ⁇ 2. The actuator 14 is driven, the rounding angle is decreased, and the process returns to step 300 and the above-described processing is repeated. In other words, when the rounding angle is larger than ⁇ 2 at high speed, the rounding angle is reduced to ⁇ 2, so that the aerodynamic performance by the undercover 10 can be obtained with the preset rounding angle 2 for high speed.
- step 3 08 determines whether or not the pressure under the under cover 10 has increased. This determination is made by determining whether or not the pressure detection result by the pressure sensor 28 and the vehicle speed detection result by the vehicle speed sensor 22 are in the separation region shown in FIG. 9, and if the determination is positive, Go to step 3 1 4, and if negative, go to step 3 1 6.
- step 3 14 the actuator 14 is driven, the rounding angle of the undercover 1 10 is decreased, and the above process is repeated after returning to step 3 0. That is, when the air flow under the under cover 10 is in the separation region shown in FIG. 9, the air flow is separated and does not follow the under capa 10; As a result, the air flows along the under cover 10, and the aerodynamic performance of the under cover 10 can be obtained.
- Step 3 1 6 it is determined whether or not the pressure under the under cover 10 has decreased. The determination is made by determining whether or not the pressure detection result by the pressure sensor 28 and the vehicle speed detection result by the vehicle speed sensor 22 are in the steady region shown in FIG. Goes to step 3 1 8 and if not, goes to step 3 20.
- Step 3 18 after the actuator 14 is driven and the rounding angle is increased so that the rounding angle of the under cover 10 becomes ⁇ 1, the process returns to Step 3 0 0 and the above processing is repeated. That is, when the air flow under the under cover 10 is in the steady region shown in FIG. 9, the air flow is flowing along the under cover 10, so the round-up angle of the under cover 10 is used for low speed. Increase the rounding angle set to to ⁇ ⁇ . As a result, since the aerodynamic effect of the undercover 10 is not so necessary at low speeds, it is possible to prevent interference between the road surface and the undercarriage 10 by increasing the rounding angle of the undercover 10. it can. At this time, the increase in the round-up angle is controlled so as not to shift to the peeling state.
- step 3 20 it is determined whether a right roll has occurred. The determination is made by determining whether or not a right roll has occurred from the detection result of the roll detection sensor 40. If the determination is affirmative, the process proceeds to step 3 2 2. If the determination is negative Go to step 3 2 4.
- step 3 2 2 after the actuator 14 is driven so as to reduce the round-up angle on the left side of the undercover 10, the process returns to step 3 0 and the above-described processing is repeated. That is, when a right roll is generated, the aerodynamic performance on the left side of the undercover 10 is increased to control the right roll, so that the vehicle posture can be stabilized. .
- step 3 2 it is determined whether a left roll has occurred. The determination is made by determining whether or not a left roll has occurred from the detection result of the roll detection sensor 40. If the determination is affirmative, the process proceeds to step 3 26, and if the determination is negative Go to step 3 2 8.
- step 3 26 after the actuator 14 is driven so that the right angle of the undercover 10 is reduced, the process returns to step 3 0 and the above-described processing is repeated. That is, when a left roll is generated, the aerodynamic performance on the right side of the undercover 10 is increased to control the left roll, so that the vehicle posture can be stabilized.
- step 3 28 it is determined whether or not the right side round-up angle of the undercover 10 is larger than the left side round-up angle. The determination is made, for example, by detecting the driving amount of each of the actuators 14. If the determination is affirmative, the process proceeds to step 3 30. If the determination is negative, the process proceeds to step 3 3 2. Transition.
- step 3 30 after the actuator 14 is driven so that the round-up angle on the left side of the undercover 10 increases, the process returns to step 3 0 and the above-described processing is repeated.
- step 3 3 2 it is determined whether or not the right rounding angle of the undercover 10 is smaller than the left rounding angle. For example, each determination If the determination is affirmative, the process proceeds to step 3 34.If the determination is negative, the process returns to step 3 0 0 and the above processing is repeated. It is.
- step 3 30 when the roll is not generated, the control is performed so that the same round-up angle is obtained when the round-up angle differs between the left and right of the under cover 10.
- the under cover 10 is controlled according to the vehicle speed, and the under cover 10 according to the pressure under the under cover 10 0 is controlled. It is possible to obtain the optimum aerodynamic performance of the undercover 10 by combining the control of the vertical angle of the upper cover and the control of the upward angle of the undercover 10 according to the roll of the vehicle.
- control is performed by changing only the round-up angle of the under cover 10, but the present invention is not limited to this.
- the under cover 10 The ground clearance may be changed and controlled.
- the vehicle height may be further detected as in the second embodiment, and the ground height of the undercover 10 may be further controlled according to the vehicle height.
- the combination of the embodiments is not limited to the above, and it is possible to control the round-up angle of the undercover 10 by appropriately combining the embodiments.
- the under cover 10 is used as an aerodynamic part, but the present invention is not limited to this.
- aerodynamic parts such as a diffuser and a wind guide plate may be applied. Les.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2006800119917A CN101160234B (zh) | 2005-04-13 | 2006-04-13 | 车身下面气流控制装置 |
DE112006000902T DE112006000902T5 (de) | 2005-04-13 | 2006-04-13 | Karosserieunterseitenluftflusssteuerung |
US11/918,323 US7717494B2 (en) | 2005-04-13 | 2006-04-13 | Vehicle body underside air flow controller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005115764A JP3952063B2 (ja) | 2005-04-13 | 2005-04-13 | 車体下面空気流制御装置 |
JP2005-115764 | 2005-04-13 |
Publications (1)
Publication Number | Publication Date |
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WO2006109893A1 true WO2006109893A1 (ja) | 2006-10-19 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/308257 WO2006109893A1 (ja) | 2005-04-13 | 2006-04-13 | 車体下面空気流制御装置 |
Country Status (5)
Country | Link |
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US (1) | US7717494B2 (ja) |
JP (1) | JP3952063B2 (ja) |
CN (1) | CN101160234B (ja) |
DE (1) | DE112006000902T5 (ja) |
WO (1) | WO2006109893A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JP3952063B2 (ja) | 2007-08-01 |
US7717494B2 (en) | 2010-05-18 |
JP2006290229A (ja) | 2006-10-26 |
US20090085371A1 (en) | 2009-04-02 |
CN101160234B (zh) | 2010-12-08 |
CN101160234A (zh) | 2008-04-09 |
DE112006000902T5 (de) | 2008-04-03 |
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