WO1988009737A1 - Apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine - Google Patents
Apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine Download PDFInfo
- Publication number
- WO1988009737A1 WO1988009737A1 PCT/IT1988/000042 IT8800042W WO8809737A1 WO 1988009737 A1 WO1988009737 A1 WO 1988009737A1 IT 8800042 W IT8800042 W IT 8800042W WO 8809737 A1 WO8809737 A1 WO 8809737A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- car
- duct
- sucking
- engine
- sucking device
- Prior art date
Links
Classifications
-
- 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
Definitions
- the present invention relates to an apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine.
- Sports cars designed for racing on tracks built for this purpose are provided with engines having an extremely high power, suitable for imparting to these cars very appreciable speeds and accelerations.
- the wheels must have a high adhesion to ground and such an adhesion depends on the vertical load acting on the wheels themselves.
- aerodynamic surfaces are utilized which exploit the flow of air running along them during the forward motion of the car for obtaining a downward thrust, called negative lift.
- the negative lift which conveniently should be as high as it is possible in order to obtain always the maximum adhesion of the wheels to ground, increases with the angle of attack of the aerodynamic profile with respect to the direction of motion and to its curvature, and occurs moreover between tha flat bottom of the car and the ground if an air thread is channeled and contained in said area, being named in this case "ground effect”.
- ground effect may be adversely affected by the escape of air from the bottom of the car.
- the present invention provides an apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine, which comprises a sucking device connected to the exhaust duct of the engine of the car, having a suction manifold to which corresponding ducts coming from the negative lift aerodynamic surfaces of the car connected to openings which are present on said surfaces designed for sucking the boundary layer in the areas of either possible thread detachment or flow lateral dispersion are connected, the sucking device being driven either directly or indirectly by the exhaust gases of the engine of the car.
- the sucking device comprises a section of the exhaust duct of the engine having a portion with reduced cross-section designed for accelerating the exhaust gases flowing through it so as to cause a pressure drop thereof, to which the suction manifold coming from the aerodynamic surfaces of the car the boundary layer of which is to be sucked is connected.
- the sucking device may comprise a multistage centrifugal blower having the turbine element driven by the exhaust gases of the engine and the compressor element with the intake duct connected to the suction manifold coming from the aerodynamic surfaces of the vehicle the boundary layer of which is to be sucked.
- the manifold leading to the sucking device is provided with a shut-off and adjustment valve manually controlled by the car driver.
- the shut-off and adjustment valve may also be controlled automatically by a servo-actuator operated by means of an electronic apparatus in fuction of magnitudes detected by corresponding sensors.
- the sucking device is conveniently provided with a parallel by-pass duct, which may be shut-off by a controlled valve, for allowing the exhaust gases of the engine to be directly discharged.
- damping devices for the reflected pressure waves comprising either a drilled wall or a wall realized anyhow in a porous material inside the duct, or consisting of a plurality of elastic projections inside the duct having different dimensions and corresponding proper
- Figure 1 is an overall schematic diagram of a racing car provided with aerodynamic surfaces, equipped with the sucking device according to the invention
- Figure 2 is a schematic section of a negative lift aerodynamic action 30 member, provided with ducts for sucking the boundary layer;
- Figure 3 is a schematic section of the sucking device according to the invention, connected to the under-surface of the car;
- Figure 4 shows an alternative embodiment of the device of Figure 3;
- FIG. 5 is a schematic diagram of the sucking device according to the invention, provided with an exhaust member in parallel;
- Figure 6 is a schematic diagram as per Figure 5 but with immission of the parallel exhaust duct again into the main exhaust duct.
- a car 1 is provided with several aerodynamic effect surfaces with a negative lift action so as to produce a downward load applied to the car during its forward motion for increasing the adhesion of the wheels to ground.
- These surfaces comprise, for instance, a fore aileron 2, a rear aileron 3, the flat bottom 4 itself of the car producing the so-called "ground effect", an inclined rear surface 5, etc.
- the wing shaped airfoils have a transverse section of the kind shown in Figure 2; they have a face 6a called extrados which is convex and with a linear extension larger than that of the opposed face 6b called intrados - " which- is flat or, more frequently, concave.
- the lift P increases within given limits with the increase of ⁇ and moreover with the increase of the curvature of the airfoil.
- a detachment of threads occur, as shown in the figure, i.e. the air flowing along the extrados of the airfoil is no more adherent to it for its whole extension, but from a given point onwards tends to follow a direction more or less parallel to the direction V thus leaving the surface and originating a high vortex area S.
- the extrados 6a of the airfoil presents, according to the invention, a plurality of openings 7 communicating with a manifold 8 connected to a suction line 9 through which the boundary layer of the fluid along the surface of the airfoil is sucked, thus maintaining the adhesion of the fluid threads to the surface and appreciably delaying the occurrence of a stall.
- a similar aerodynamic 'action is realized in a racing car by the fore aileron 2, the rear aileron 3 and the inclined rear surface 5.
- the "ground effect” occurs when between the flat surface 4 and the ground there flows a thread of air having a speed higher than the speed of the- car. The higher speed is then accompanied by a smaller pressure in that area, so producing in motion the desired aerodynamic load directed downwards.
- lateral skirts are provided and, in alternative or in addition thereto, there is provided for a sucking of the existing air through openings 10 disposed on the whole surface 4 or on a part thereof, through a collection chamber 11 and a duct 12. All the aerodynamic surfaces of the car provided with suction of the boundary layer have the respective ducts 9, 12 connected to a suction unit 13.
- FIG. 3 An embodiment of the suction unit 13 is shown in detail in Figure 3.
- This embodiment comprises a portion 14 having a reduced cross-section connected to the discharge duct 15 for the exhaust of the combusted gases of the engine by a convergent portion 16 and a divergent portion 17 which is again connected to the exhaust duct or which, preferably, discharges to the outside.
- the portion 14 is surrounded by a closed chamber 18 communicating with a suction manifold 19 to which the suction ducts 9 and 12 of the various aerodynamic devices are connected.
- This closed chamber 18 is in communication with the portion 14 through a plurality of openings 20 consisting, for instance, of holes arranged along its circumference.
- the flow of the exhaust gases comes through the exhaust duct 15 to the convergent portion 16 in which it is accelerated, then arriving to the portion 14.
- the acceleration undergone by the gases by Venturi effect causes a pressure decreasing in the portion 14 and consequently the suction through the holes 20 of the air present in the chamber 18 and which flows towards it through the suction manifold 19.
- the cross-sections of the divergent portion 17 are calculated so as to realize the lowest loss of load and to ensure a suitable exit speed of the exhaust gases, taking into account the change of their flow rate caused by the mixing of the exhaust gases with the sucked ai and their change of temperature.
- the sucking device according to the invention may be realized also as an ejector providing for a nozzle-shaped convergent -ft
- valve 25 on the manifold 19 which can be controlled by the driver or by means of an actuator driven by a microprocessor which operates in function of a plurality of magnitudes which can be defined every time, such as the conditions of the road and environment, the
- the suction unit may be provided with a by-pass direct cexhaust duct, which by-passes the suction area in order to exclude the assage through the suction unit during some operating conditions.
- This 25 by-pass duct may, as shown in Figure 5 with the reference 26, discharge directly to the outside or, according to the embodiment shown in Figure 6, the by-pass duct 27 may be re-connected to the exhaust duct 15 downstream of the divergent portion 17 (or 23).
- the by-pass duct is provided with a corresponding shut-off valve 28 which, analogously to the valve 25, may be controlled either manually or by means of a servo-actuator driven by a micro ⁇ processor controlling unit.
- the sucking device 13 may also consist of a multistage centrifugal blower unit having the turbine element driven by the exhaust gases of the engine, the compressor element rea izing the suction.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The apparatus of the invention comprises a sucking device (13) connected to the exhaust duct (15) of the engine of the car, having a suction manifold (19) to which corresponding ducts (9, 12) coming from the negative lift aerodynamic surfaces (2, 3, 4) of the car connected to openings which are present on said surfaces designed for sucking the boundary layer in the areas of either possible thread detachment or flow lateral dispersion are connected, the sucking device (13) being driven either directly or indirectly by the exhaust gases of the engine of the car.
Description
"Apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine"
The present invention relates to an apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine.
Sports cars designed for racing on tracks built for this purpose, are provided with engines having an extremely high power, suitable for imparting to these cars very appreciable speeds and accelerations.
In order that the car may receive on straight course and on curved paths the desired accelerations both for increasing its speed and when braking and running in curve, these accelerations must be transmitted by the car to the ground through the tired wheels with which the car is provided.
To this end, the wheels must have a high adhesion to ground and such an adhesion depends on the vertical load acting on the wheels themselves.
in order to increase said load, particularly at high speeds, aerodynamic surfaces are utilized which exploit the flow of air running along them during the forward motion of the car for obtaining a downward thrust, called negative lift.
The negative lift, which conveniently should be as high as it is possible in order to obtain always the maximum adhesion of the wheels to ground, increases with the angle of attack of the aerodynamic profile with respect to the direction of motion and to its curvature, and occurs moreover between tha flat bottom of the car and the ground if an air thread is channeled and contained in said area, being named in this case "ground effect".
This negative lift however, in the case of a high angle of attack or
curva ure o e aero yn m c u , gr condition of "stall" occurs, caused by the detachment of the fluid thread from the aerodynamic surface itself which consequently loses its effectiveness.
Also the ground effect may be adversely affected by the escape of air from the bottom of the car.
The problem therefore arises of realizing aerodynamic surfaces which may be maintained in conditions leading to a high negative lift without the stall conditions occur.
These results are attained by the present invention which provides an apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine, which comprises a sucking device connected to the exhaust duct of the engine of the car, having a suction manifold to which corresponding ducts coming from the negative lift aerodynamic surfaces of the car connected to openings which are present on said surfaces designed for sucking the boundary layer in the areas of either possible thread detachment or flow lateral dispersion are connected, the sucking device being driven either directly or indirectly by the exhaust gases of the engine of the car.
Conveniently, the sucking device comprises a section of the exhaust duct of the engine having a portion with reduced cross-section designed for accelerating the exhaust gases flowing through it so as to cause a pressure drop thereof, to which the suction manifold coming from the aerodynamic surfaces of the car the boundary layer of which is to be sucked is connected.
Alternatively, the sucking device may comprise a multistage centrifugal blower having the turbine element driven by the exhaust gases of the
engine and the compressor element with the intake duct connected to the suction manifold coming from the aerodynamic surfaces of the vehicle the boundary layer of which is to be sucked.
Conveniently, the manifold leading to the sucking device is provided with a shut-off and adjustment valve manually controlled by the car driver. The shut-off and adjustment valve may also be controlled automatically by a servo-actuator operated by means of an electronic apparatus in fuction of magnitudes detected by corresponding sensors.
-10
The sucking device is conveniently provided with a parallel by-pass duct, which may be shut-off by a controlled valve, for allowing the exhaust gases of the engine to be directly discharged.
15 In the exhaust discharge duct, upstream of the sucking device, there are located damping devices for the reflected pressure waves, comprising either a drilled wall or a wall realized anyhow in a porous material inside the duct, or consisting of a plurality of elastic projections inside the duct having different dimensions and corresponding proper
20 resonance frequencies of vibration.
Further details of the invention will be apparent from the following description with reference to the accompanying drawings, in which: •
25 Figure 1 is an overall schematic diagram of a racing car provided with aerodynamic surfaces, equipped with the sucking device according to the invention;
Figure 2 is a schematic section of a negative lift aerodynamic action 30 member, provided with ducts for sucking the boundary layer;
Figure 3 is a schematic section of the sucking device according to the invention, connected to the under-surface of the car;
Figure 4 shows an alternative embodiment of the device of Figure 3;
Figure 5 is a schematic diagram of the sucking device according to the invention, provided with an exhaust member in parallel; and
Figure 6 is a schematic diagram as per Figure 5 but with immission of the parallel exhaust duct again into the main exhaust duct.
As shown in Figure 1, a car 1 is provided with several aerodynamic effect surfaces with a negative lift action so as to produce a downward load applied to the car during its forward motion for increasing the adhesion of the wheels to ground. These surfaces comprise, for instance, a fore aileron 2, a rear aileron 3, the flat bottom 4 itself of the car producing the so-called "ground effect", an inclined rear surface 5, etc.
The wing shaped airfoils have a transverse section of the kind shown in Figure 2; they have a face 6a called extrados which is convex and with a linear extension larger than that of the opposed face 6b called intrados -" which- is flat or, more frequently, concave.
The dynamic action of the air during the forward motion, having the direction V shown by the arrow of Figure 2, produces on said surfaces besi tes a parallel and opposite to V drag, an action P perpendicular to , the direction V, called lift, the magnitude of which depends on the attack angle α formed by the chord "c" of the airfoil and the direction V.
In particular, the lift P increases within given limits with the increase of α and moreover with the increase of the curvature of the airfoil. However, above either a certain angle of attack or a certain curvature a detachment of threads occur, as shown in the figure, i.e. the air flowing along the extrados of the airfoil is no more adherent to
it for its whole extension, but from a given point onwards tends to follow a direction more or less parallel to the direction V thus leaving the surface and originating a high vortex area S.
When this phenomenon involves a relevant part of the airfoil, it is called a "stall" condition and causes an almost complete loss of lift.
For maintaining therefore either a high angle α of attack or a large curvature without a stall condition occurring, in order to obtain a lift value P (directed downwards for use in cars as the airfoil has the extrados directed downwards) as high as it is possible, the extrados 6a of the airfoil presents, according to the invention, a plurality of openings 7 communicating with a manifold 8 connected to a suction line 9 through which the boundary layer of the fluid along the surface of the airfoil is sucked, thus maintaining the adhesion of the fluid threads to the surface and appreciably delaying the occurrence of a stall.
A similar aerodynamic 'action is realized in a racing car by the fore aileron 2, the rear aileron 3 and the inclined rear surface 5.
Insofar as the under-surface 4 of the car is concerned, the "ground effect" occurs when between the flat surface 4 and the ground there flows a thread of air having a speed higher than the speed of the- car. The higher speed is then accompanied by a smaller pressure in that area, so producing in motion the desired aerodynamic load directed downwards.
In order that this phenomenon occurs, it is necessary that air does not escapes laterally with respect to the car. To this end, lateral skirts are provided and, in alternative or in addition thereto, there is provided for a sucking of the existing air through openings 10 disposed on the whole surface 4 or on a part thereof, through a collection chamber 11 and a duct 12.
All the aerodynamic surfaces of the car provided with suction of the boundary layer have the respective ducts 9, 12 connected to a suction unit 13.
An embodiment of the suction unit 13 is shown in detail in Figure 3. This embodiment comprises a portion 14 having a reduced cross-section connected to the discharge duct 15 for the exhaust of the combusted gases of the engine by a convergent portion 16 and a divergent portion 17 which is again connected to the exhaust duct or which, preferably, discharges to the outside.
The portion 14 is surrounded by a closed chamber 18 communicating with a suction manifold 19 to which the suction ducts 9 and 12 of the various aerodynamic devices are connected. This closed chamber 18 is in communication with the portion 14 through a plurality of openings 20 consisting, for instance, of holes arranged along its circumference.
The flow of the exhaust gases, having the direction shown by the arrow S' in Figure 3, comes through the exhaust duct 15 to the convergent portion 16 in which it is accelerated, then arriving to the portion 14. The acceleration undergone by the gases by Venturi effect causes a pressure decreasing in the portion 14 and consequently the suction through the holes 20 of the air present in the chamber 18 and which flows towards it through the suction manifold 19.
The exhaust gases together with the air sucked from the aerodynamic surfaces regain then pressure and slow down within the divergent portion 17, being at least freely discharged to the outside.
The cross-sections of the divergent portion 17 are calculated so as to realize the lowest loss of load and to ensure a suitable exit speed of the exhaust gases, taking into account the change of their flow rate caused by the mixing of the exhaust gases with the sucked ai and their
change of temperature.
As shown in Figure 4, the sucking device according to the invention may be realized also as an ejector providing for a nozzle-shaped convergent -ft
5 portion 21 connected to the exhaust duct 15 coming from the engine,
* which discharges within a chamber 22 connected to the suction manifold
19. From the chamber 22 then it branches the divergent duct 23 discharging towards the outside.
-10 The operation of the device of this embodiment is similar to what has been disclosed hereinbefore, being generated in the narrowed cross- section portion 24 the negative pressure necessary for producing the desired suction from the manifold 19.
15 In order to allow the device to be controlled during the racing, there may be provided a valve 25 on the manifold 19 which can be controlled by the driver or by means of an actuator driven by a microprocessor which operates in function of a plurality of magnitudes which can be defined every time, such as the conditions of the road and environment, the
20 characteristics of the engine, the tires, etc.
If necessary, the suction unit may be provided with a by-pass direct cexhaust duct, which by-passes the suction area in order to exclude the assage through the suction unit during some operating conditions. This 25 by-pass duct may, as shown in Figure 5 with the reference 26, discharge directly to the outside or, according to the embodiment shown in Figure 6, the by-pass duct 27 may be re-connected to the exhaust duct 15 downstream of the divergent portion 17 (or 23).
30 In both cases, the by-pass duct is provided with a corresponding shut-off valve 28 which, analogously to the valve 25, may be controlled either manually or by means of a servo-actuator driven by a micro¬ processor controlling unit.
As an alternative to the embodiments comprising a Venturi tube or an ejector, shown in Figure 3 and 4, the sucking device 13 may also consist of a multistage centrifugal blower unit having the turbine element driven by the exhaust gases of the engine, the compressor element rea izing the suction.
The presence in the exhaust duct of the narrowing constituted by the suction device, anyhow realized, might cause the reflection towards the engine of possible pressure waves present in the exhaust system. This occurrence can be efficaciously opposed by inserting between the engine and the suction unit in the exhaust duct 15 of damping means comprising, for instance as schematically shown in Figure 4 in the upper half of the duct 15, a wall 29 internal to the duct 15 itself either provided with a plurality of holes 30 or realized with a porous material, a sintered material or the like. As an alternative, there may be provided within the duct 15 elastic projecting elements 31, represented in the lower half of the duct 15 in Figure 4, having different heights suitable for providing natural frequencies corresponding to the frequencies of the pressure waves the production of which is foreseen.
Claims
1. An apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine, characterised by comprising a sucking device (13) connected to the exhaust duct (15) of the engine of the car, having a suction manifold (19) to which corresponding ducts (9, 12) coming from the negative lift aerodynamic surfaces (2, 3, 4) of the car connected to openings which are present on said surfaces designed for sucking the boundary layer in the areas of either possible thread detachment or flow lateral dispersion are connected, the sucking device (13) being driven either directly or indirectly by the exhaust gases of the engine of the car.
2. An apparatus according to claim 1, characterised in that the suction device (13) comprises a section of the exhaust duct (15) of the engine having a portion with reduced cross-section (14) designed for accelerating the exhaust gases flowing through it so as to cause a pressure drop thereof, to which the suction manifold (19) coming from the aerodynamic surfaces of the car the boundary layer of which is to be sucked is connected.
3. An apparatus according to claim 1, characterised in that the sucking device (13) comprises a multistage centrifugal blower having the turbine element driven by the exhaust gases of the engine and the compressor element with the intake duct connected to the suction manifold (19) coming from the aerodynamic surfaces of the vehicle the boundary layer of which is to be sucked.
4. An apparatus according to claim 1, characterised in that the manifold (19) leading to the sucking device (13) is provided with a shut-off and adjustment valve (25) manually controlled by the car driver.
5. An apparatus according to claim 1, characterised in that the manifold (19) leading to the sucking device (13) is provided with a shut-off and adjustment valve (25) which is controlled automatically by an electronic unit in fuction of magnitudes detected by corresponding sensors.
6. An apparatus according to claim 1, characterised in that the sucking device (13) is conveniently provided with a parallel by-pass duct (26), which may be shut-off by a controlled valve (28), for allowing the exhaust gases of the engine to be directly discharged.
7. An apparatus according to claim 1, characterised in that in the exhaust discharge duct (15), upstream of the sucking device (13), there are located damping devices for the reflected pressure waves.
8. An apparatus according to claim 7, characterised in that the damping devices consist of a drilled wall (29, 30) or a wall realized anyhow in a porous material inside the duct (15).
9. An apparatus according to claim 7, characterised in that the damping devices consist of a plurality of elastic projections (31) inside the duct (15) having different dimensions and corresponding proper resonance frequencies of vibration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT48009A/87 | 1987-06-02 | ||
| IT8748009A IT1206011B (en) | 1987-06-02 | 1987-06-02 | LIMIT LAYER INTAKE EQUIPMENT OF AERODYNAMIC SURFACES, ESPECIALLY FOR SPORTS CARS WITH INTERNAL COMBUSTION ENGINE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1988009737A1 true WO1988009737A1 (en) | 1988-12-15 |
Family
ID=11263938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT1988/000042 WO1988009737A1 (en) | 1987-06-02 | 1988-06-01 | Apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | IT1206011B (en) |
| WO (1) | WO1988009737A1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2268451A (en) * | 1992-07-10 | 1994-01-12 | John Edward Vines | Aerodynamic vehicle traction aid. |
| GB2269142A (en) * | 1992-07-28 | 1994-02-02 | Mclaren Cars Nv | Motor vehicle having ground effect producing aerodynamic surfaces |
| EP0932542A1 (en) * | 1996-10-25 | 1999-08-04 | Georgia Tech Research Corporation | Pneumatic aerodynamic control for cars |
| GB2344854A (en) * | 1998-12-18 | 2000-06-21 | Ford Global Tech Inc | Motor vehicle exhaust system |
| EP1752364A1 (en) * | 2005-08-09 | 2007-02-14 | Actiflow B.V. | Boundary layer suction system for a vehicle |
| RU2449913C2 (en) * | 2010-03-22 | 2012-05-10 | Николай Павлович Мартынюк | Device to reduce moving vehicle drag |
| CN103987618A (en) * | 2011-12-09 | 2014-08-13 | 丰田自动车株式会社 | Fluid control apparatus |
| ES2549091A1 (en) * | 2014-04-22 | 2015-10-22 | Manuel MUÑOZ SÁIZ | System and procedure of control, stabilization and anti-slip for crashes and vehicles rolled in general (Machine-translation by Google Translate, not legally binding) |
| WO2016139472A1 (en) * | 2015-03-05 | 2016-09-09 | Osama Elogab | Method and system for reducing drag in a vehicle |
| FR3041596A1 (en) * | 2015-09-30 | 2017-03-31 | Plastic Omnium Cie | AERODYNAMIC SYSTEM WITH VORTEX GENERATOR SUPPLIED BY EXHAUST GASES |
| ITUB20159144A1 (en) * | 2015-12-16 | 2017-06-16 | Automobili Lamborghini Spa | WING FOR VEHICLES, PROCEDURE FOR ITS CONTROL AND MOTOR VEHICLE INCLUDING THIS? ALA |
| IT201800001950A1 (en) * | 2018-01-29 | 2019-07-29 | Guglielmo Biagiotti | DEVICE INSTALLED ON HIGH PERFORMANCE CARS WITH THE PURPOSE OF INCREASING THE EFFICIENCY OF THE AERODYNAMIC DEVICES ON THESE DEVICES |
| GB2588394A (en) * | 2019-10-21 | 2021-04-28 | Mcmurtry Automotive Ltd | Downforce system for a vehicle |
| GB2606718A (en) * | 2021-05-17 | 2022-11-23 | Ogab Ltd | A system and method for creating vehicular downforce |
| US11603145B2 (en) | 2016-09-05 | 2023-03-14 | OGAB Ltd. | Active drag-reduction system and a method of reducing drag experienced by a vehicle |
| DE102022106385A1 (en) | 2022-03-18 | 2023-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with controllable vertical contact force |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1063557A (en) * | 1951-09-29 | 1954-05-04 | Aerodynamic stabilizer for automobiles | |
| FR2062016A5 (en) * | 1969-10-08 | 1971-06-25 | Lezy Renee | |
| DE2306044A1 (en) * | 1973-02-08 | 1974-09-05 | Daimler Benz Ag | MOTOR VEHICLE |
| DE2726507A1 (en) * | 1977-06-11 | 1978-12-21 | Volkswagenwerk Ag | Variable effect aerofoil for high performance car - produces compressed air curtain with adjustable pressure in tail of fixed foil |
| DE3403636A1 (en) * | 1984-02-02 | 1985-08-14 | Werner 8000 München Fuchs | Device for increasing the road grip of vehicles, in particular motor vehicles |
-
1987
- 1987-06-02 IT IT8748009A patent/IT1206011B/en active
-
1988
- 1988-06-01 WO PCT/IT1988/000042 patent/WO1988009737A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1063557A (en) * | 1951-09-29 | 1954-05-04 | Aerodynamic stabilizer for automobiles | |
| FR2062016A5 (en) * | 1969-10-08 | 1971-06-25 | Lezy Renee | |
| DE2306044A1 (en) * | 1973-02-08 | 1974-09-05 | Daimler Benz Ag | MOTOR VEHICLE |
| DE2726507A1 (en) * | 1977-06-11 | 1978-12-21 | Volkswagenwerk Ag | Variable effect aerofoil for high performance car - produces compressed air curtain with adjustable pressure in tail of fixed foil |
| DE3403636A1 (en) * | 1984-02-02 | 1985-08-14 | Werner 8000 München Fuchs | Device for increasing the road grip of vehicles, in particular motor vehicles |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2268451A (en) * | 1992-07-10 | 1994-01-12 | John Edward Vines | Aerodynamic vehicle traction aid. |
| GB2268451B (en) * | 1992-07-10 | 1995-10-11 | John Edward Vines | Improving traction of a motor vehicle |
| GB2269142A (en) * | 1992-07-28 | 1994-02-02 | Mclaren Cars Nv | Motor vehicle having ground effect producing aerodynamic surfaces |
| GB2269142B (en) * | 1992-07-28 | 1995-12-13 | Mclaren Cars Nv | Improvements in or relating to ground effect road vehicles |
| EP0932542A1 (en) * | 1996-10-25 | 1999-08-04 | Georgia Tech Research Corporation | Pneumatic aerodynamic control for cars |
| EP0932542A4 (en) * | 1996-10-25 | 2000-01-19 | Georgia Tech Res Inst | Pneumatic aerodynamic control for cars |
| GB2344854A (en) * | 1998-12-18 | 2000-06-21 | Ford Global Tech Inc | Motor vehicle exhaust system |
| EP1752364A1 (en) * | 2005-08-09 | 2007-02-14 | Actiflow B.V. | Boundary layer suction system for a vehicle |
| WO2007017236A1 (en) | 2005-08-09 | 2007-02-15 | Actiflow B.V. | Boundary layer suction system for a vehicle |
| JP2009504472A (en) * | 2005-08-09 | 2009-02-05 | アクティフロー ベー．フェー． | Vehicle boundary layer suction system |
| RU2449913C2 (en) * | 2010-03-22 | 2012-05-10 | Николай Павлович Мартынюк | Device to reduce moving vehicle drag |
| CN103987618A (en) * | 2011-12-09 | 2014-08-13 | 丰田自动车株式会社 | Fluid control apparatus |
| ES2549091A1 (en) * | 2014-04-22 | 2015-10-22 | Manuel MUÑOZ SÁIZ | System and procedure of control, stabilization and anti-slip for crashes and vehicles rolled in general (Machine-translation by Google Translate, not legally binding) |
| US10414449B2 (en) | 2015-03-05 | 2019-09-17 | 06Ab Limited | Method and system for reducing drag in a vehicle |
| AU2020202264B2 (en) * | 2015-03-05 | 2021-05-20 | Ogab Limited | Method and system for reducing drag in a vehicle |
| CN111267971B (en) * | 2015-03-05 | 2022-12-23 | 奥萨马·伊劳格布 | Method and system for reducing drag in a vehicle |
| CN111267972B (en) * | 2015-03-05 | 2023-02-17 | 奥萨马·伊劳格布 | Method and system for reducing drag in a vehicle |
| AU2020202262B2 (en) * | 2015-03-05 | 2021-07-08 | Ogab Limited | Method and system for reducing drag in a vehicle |
| CN107428381A (en) * | 2015-03-05 | 2017-12-01 | 奥萨马·伊劳格布 | For reducing the method and system of automobile resistance |
| EP4086146A1 (en) * | 2015-03-05 | 2022-11-09 | Ogab Ltd | Method and system for reducing drag in a vehicle |
| AU2020202263B2 (en) * | 2015-03-05 | 2021-05-20 | Ogab Limited | Method and system for reducing drag in a vehicle |
| AU2020202261B2 (en) * | 2015-03-05 | 2021-05-20 | Ogab Limited | Method and system for reducing drag in a vehicle |
| WO2016139472A1 (en) * | 2015-03-05 | 2016-09-09 | Osama Elogab | Method and system for reducing drag in a vehicle |
| CN107428381B (en) * | 2015-03-05 | 2020-05-26 | 奥萨马·伊劳格布 | Method and system for reducing drag in a vehicle |
| EP3659902A1 (en) * | 2015-03-05 | 2020-06-03 | Osama Elogab | Method and system for reducing drag in a vehicle |
| CN111267971A (en) * | 2015-03-05 | 2020-06-12 | 奥萨马·伊劳格布 | Method and system for reducing drag in a vehicle |
| CN111267972A (en) * | 2015-03-05 | 2020-06-12 | 奥萨马·伊劳格布 | Method and system for reducing drag in a vehicle |
| CN108137106A (en) * | 2015-09-30 | 2018-06-08 | 全耐塑料公司 | Aerodynamics system with the vortex generator supplied by discharge gas |
| FR3041596A1 (en) * | 2015-09-30 | 2017-03-31 | Plastic Omnium Cie | AERODYNAMIC SYSTEM WITH VORTEX GENERATOR SUPPLIED BY EXHAUST GASES |
| WO2017055757A1 (en) * | 2015-09-30 | 2017-04-06 | Compagnie Plastic Omnium | Aerodynamic system comprising a vortex generator supplied by exhaust gases |
| US10696334B2 (en) | 2015-12-16 | 2020-06-30 | Automobili Lamborghini S.P.A. | Wing for vehicles, process for its control and motor vehicle comprising this wing |
| CN108367790A (en) * | 2015-12-16 | 2018-08-03 | 兰博基尼汽车股份有限公司 | Vehicle fin, the control method of fin and the motor vehicles including fin |
| WO2017103870A1 (en) * | 2015-12-16 | 2017-06-22 | Automobili Lamborghini S.P.A. | Wing for vehicles, process for its control and motor vehicle comprising this wing |
| AU2016373569B2 (en) * | 2015-12-16 | 2021-07-22 | Automobili Lamborghini S.P.A. | Wing for vehicles, process for its control and motor vehicle comprising this wing |
| ITUB20159144A1 (en) * | 2015-12-16 | 2017-06-16 | Automobili Lamborghini Spa | WING FOR VEHICLES, PROCEDURE FOR ITS CONTROL AND MOTOR VEHICLE INCLUDING THIS? ALA |
| US11603145B2 (en) | 2016-09-05 | 2023-03-14 | OGAB Ltd. | Active drag-reduction system and a method of reducing drag experienced by a vehicle |
| IT201800001950A1 (en) * | 2018-01-29 | 2019-07-29 | Guglielmo Biagiotti | DEVICE INSTALLED ON HIGH PERFORMANCE CARS WITH THE PURPOSE OF INCREASING THE EFFICIENCY OF THE AERODYNAMIC DEVICES ON THESE DEVICES |
| GB2588394A (en) * | 2019-10-21 | 2021-04-28 | Mcmurtry Automotive Ltd | Downforce system for a vehicle |
| CN114585556A (en) * | 2019-10-21 | 2022-06-03 | 麦默特里汽车有限公司 | Downforce system for vehicle |
| GB2588394B (en) * | 2019-10-21 | 2022-01-12 | Mcmurtry Automotive Ltd | Downforce system for a vehicle |
| WO2021078649A1 (en) * | 2019-10-21 | 2021-04-29 | McMurtry Automotive Limited | Downforce system for a vehicle |
| GB2606718A (en) * | 2021-05-17 | 2022-11-23 | Ogab Ltd | A system and method for creating vehicular downforce |
| WO2022243825A1 (en) * | 2021-05-17 | 2022-11-24 | Ogab Ltd | A system and method for creating vehicular downforce |
| GB2606718B (en) * | 2021-05-17 | 2023-06-14 | Ogab Ltd | A system and method for creating vehicular downforce |
| DE102022106385A1 (en) | 2022-03-18 | 2023-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with controllable vertical contact force |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8748009A0 (en) | 1987-06-02 |
| IT1206011B (en) | 1989-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1988009737A1 (en) | Apparatus for sucking the boundary layer of aerodynamic surfaces, in particular for sports cars provided with an internal combustion engine | |
| US7597289B2 (en) | Apparatus and method for the control of trailing wake flows | |
| US4434957A (en) | Low drag surface | |
| US5417391A (en) | Method for control of the boundary layer on the aerodynamic surface of an aircraft, and the aircraft provided with the boundary layer control system | |
| EP0776821B1 (en) | Aircraft boundary layer control system with discharge transpiration panel | |
| US8038102B2 (en) | System and method to control flowfield vortices with micro-jet arrays | |
| US4917336A (en) | Mounting assembly for unducted prop engine and method | |
| CN102108915B (en) | Turbofan engine for stol aircraft | |
| US3298636A (en) | Airfoil | |
| US4699340A (en) | Laminar vortex pump system | |
| US4674717A (en) | Aircarft wing | |
| US11149638B2 (en) | Particle separator | |
| US9771151B2 (en) | Reaction drive helicopter with circulation control | |
| US4767425A (en) | Aspirator mechanism for turbine engine air cleaner | |
| US5155992A (en) | Method and means for generating a force | |
| WO2002092428A1 (en) | Aerofoil with gas discharge | |
| CN211777546U (en) | Injection type ventilation and smoke exhaust system for spiral tunnel | |
| KR20120063248A (en) | Airplane with wing booster | |
| EP4286683A1 (en) | Trailing edge noise reduction using an airfoil with an internal bypass channel | |
| RU2157777C2 (en) | Method of control of boundary layer on surface of thick-section wing and device for realization of this method | |
| CN113235398A (en) | Active air suction and blowing intelligent control device for wind-induced vibration of single box girder of long-span bridge girder | |
| RU2084376C1 (en) | Flying vehicle | |
| RU96114924A (en) | SHORT TAKEOFF AND LANDING PLANE | |
| US4002312A (en) | Truncated aerofoils having spanwise splitters | |
| GrÄsel et al. | Enhanced Thrust-Efficiency of Overexpanded Nozzles by Passive Venting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |