DE102004034677A1 - Flow conduction device for automobile is attached to rear end region of roof of automobile, can be displaced from operating position into braking position in which it causes additional aerodynamic air resistance for braking automobile - Google Patents
Flow conduction device for automobile is attached to rear end region of roof of automobile, can be displaced from operating position into braking position in which it causes additional aerodynamic air resistance for braking automobile Download PDFInfo
- Publication number
- DE102004034677A1 DE102004034677A1 DE102004034677A DE102004034677A DE102004034677A1 DE 102004034677 A1 DE102004034677 A1 DE 102004034677A1 DE 102004034677 A DE102004034677 A DE 102004034677A DE 102004034677 A DE102004034677 A DE 102004034677A DE 102004034677 A1 DE102004034677 A1 DE 102004034677A1
- Authority
- DE
- Germany
- Prior art keywords
- automobile
- braking
- air guide
- guiding device
- roof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
- B60T1/16—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action by increasing air resistance, e.g. flaps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/007—Rear spoilers
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Die Erfindung betrifft eine Strömungsleitvorrichtung für einen Personenkraftwagen nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a flow guiding device for one Passenger car according to the preamble of claim 1.
Aus
der
Aufgabe der Erfindung ist es, eine Strömungsleitvorrichtung mit einem Luftleitprofil für einen Personenkraftwagen zu schaffen, die den Luftwiderstand des Personenkraftwagens reduziert, und bei der das Luftleitprofil in eine Bremsstellung verlagerbar ist.task The invention is a flow guide with an air guide for to create a passenger car that reduces the aerodynamic drag of the Passenger car reduced, and in which the air guide in a braking position is displaced.
Diese Aufgabe wird mit einer Strömungsleitvorrichtung für einen Personenkraftwagen mit den Merkmalen des Patentanspruchs 1 gelöst.These Task is with a flow guide for one Passenger car with the features of claim 1 solved.
Erfindungsgemäß ist dazu die Strömungsleitvorrichtung am – in Fahrtrichtung gesehen – hinteren Endbereich eines Dachs des Personenkraftwagens angebracht. Die Anordnung der Strömungsleitvorrichtung am hinteren Endbereich des Dachs hat den Vorteil, dass sie sich in einem Bereich befindet, in dem die Luftströmung entlang des Fahrzeugs besonders stark ist. Dadurch lassen sich bereits mit einem relativ kleinen Luftleitprofil große Wirkungen erzielen. Ein auf einer Heckklappe einer Limousine angeordneter Heckspoiler dagegen befindet sich nicht direkt in der Hauptströmung oberhalb des Fahrzeugs, und muss daher entsprechend groß ge staltet werden, um vergleichbare Wirkungen erzielen zu können. Die Strömungsleitvorrichtung trägt in der Wirkstellung dazu bei, den Luftwiderstand des Personenkraftwagens zu reduzieren und so auch den Kraftstoffverbrauch zu senken. In der Bremsstellung dagegen erhöht die Strömungsleitvorrichtung den Luftwiderstand und den Abtrieb des Personenkraftwagens. Die Erhöhung des Luftwiderstands verzögert das Fahrzeug direkt, während die Erhöhung des Abtriebs die Wirkung der konventionellen Bremsen des Fahrzeugs steigert, da die Reifen so eine höhere Haftung aufweisen.According to the invention is this the flow guide on - in Seen direction of travel - rear End area of a roof of the passenger car mounted. The order the flow guide At the rear end of the roof has the advantage of being located in an area where the air flow along the vehicle is particularly strong. This can already be done with a relative small air duct large Achieve effects. An arranged on a tailgate of a sedan Rear spoiler, however, is not located directly in the mainstream above of the vehicle, and must therefore be made accordingly large, to comparable To achieve effects. The flow guide carries in the operative position to, the aerodynamic drag of the passenger car reduce fuel consumption. In the braking position, however, increased the flow guide the aerodynamic drag and the downforce of the passenger car. The increase of air resistance is delayed the vehicle directly while the increase the output of the effect of the conventional brakes of the vehicle increases, as the tires have such a higher adhesion.
Vorteilhafterweise ist das Luftleitprofil in der Ruhestellung so auf dem Fahrzeugdach angeordnet, dass es nicht oder nur unwesentlich über das Fahrzeugdach nach hinten hinausragt. So beeinträchtigt die Strömungsleitvorrichtung das optische Erscheinungsbild des Fahrzeugs in der Ruhestellung höchstens geringfügig. Erst in der Wirkstellung ragt das Luftleitprofil günstigerweise über das Fahrzeugdach nach hinten hinaus und beeinflusst so die Luftströmung oberhalb des Fahrzeugdachs. Bevorzugt wird das Luftleitprofil erst ab einer definierten Mindestgeschwindigkeit des Fahrzeugs aus der Ruhestellung in die Wirkstellung verlagert. Der Luftwiderstand nimmt exponentiell mit der Fahrzeuggeschwindigkeit zu. Die Wirkung des Luftleitprofils ist also bei niedrigen Geschwindigkeiten sehr gering, nimmt aber mit zunehmender Geschwindigkeit stark zu. Entsprechend kann das Luftleitprofil bei niedrigen Geschwindigkeiten in der Ruhestellung verbleiben, um das optische Erscheinungsbild des Fahrzeugs nicht unnötig zu beeinträchtigen. Bei Geschwindigkeiten über beispielsweise 80 km/h dagegen wird es in die Wirkstellung verlagert, da es ab dieser Mindestgeschwindigkeit eine deutliche Wirkung aufweist. Auch in der Bremsstellung kann das Luftleitprofil erst oberhalb der Mindestgeschwindigkeit nennenswert etwas zur Verzögerung des Fahrzeugs beitragen.advantageously, is the air guide in the rest position so on the vehicle roof arranged that it is not or only insignificantly over the vehicle roof to the rear protrudes. So affects the flow director the visual appearance of the vehicle in the rest position at the most slightly. Only in the active position, the Luftleitprofil conveniently extends beyond the Vehicle roof to the rear, thus affecting the air flow above of the vehicle roof. Preferably, the air guide is only from a defined minimum speed of the vehicle from the rest position shifted into the operative position. The air resistance decreases exponentially with the vehicle speed too. The effect of the air guide profile is therefore very low at low speeds, but decreases strongly with increasing speed. Accordingly, that can Air guide at low speeds in the rest position remain to the visual appearance of the vehicle not unnecessary to impair. At speeds above For example, 80 km / h, it is shifted to the operative position, because it has a clear effect from this minimum speed. Even in the braking position, the air guide can only above the minimum speed is something to delay the Contribute to the vehicle.
Bevorzugt lenkt das Luftleitprofil in der Wirkstellung während der Fahrt des Personenkraftwagens zumindest einen Teil der Luftströmung oberhalb des Fahrzeugdachs so ab, dass er über eine Heckscheibe des Fahrzeugs geleitet wird. Dadurch kann auf der Heckscheibe ein Luftkissen entstehen, sodass Schmutzpartikel sich während der Fahrt nicht auf der Heckscheibe ablagern können, und/oder der Luftstrom über der Heckscheibe trägt Schmutzpartikel, die sich bereits auf der Heckscheibe angesammelt haben, ab.Prefers directs the air guide in the operative position during the journey of the passenger car at least part of the airflow above the vehicle roof so that it is above a rear window of the vehicle is directed. This may cause an air cushion on the rear window, so that dirt particles get lost during the ride can not be deposited on the rear window, and / or the air flow over the Rear window carries Dirt particles already accumulating on the rear window have, off.
Weitere vorteilhafte Ausgestaltungen sind Gegenstand von Unteransprüchen.Further advantageous embodiments are the subject of dependent claims.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, anhand dessen die Erfindung im folgenden näher beschrieben wird. Die einzelnen Figuren zeigen in schematischer Darstellungsweise:In the drawing is an embodiment of Invention, according to which the invention in the following described in more detail becomes. The individual figures show in a schematic representation:
In
den Figuren
In
Bei
einer Geschwindigkeit des Personenkraftwagens ab 100 km/h wird das
Luftleitprofil
Wenn
bei Geschwindigkeiten über
100 km/h eine Vollbremsung erkannt wird, wird das Luftleitprofil
Die
Effektivität
der Strömungsleitvorrichtung
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004034677.1A DE102004034677B4 (en) | 2004-07-17 | 2004-07-17 | Passenger car with a flow control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004034677.1A DE102004034677B4 (en) | 2004-07-17 | 2004-07-17 | Passenger car with a flow control device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004034677A1 true DE102004034677A1 (en) | 2006-02-16 |
DE102004034677B4 DE102004034677B4 (en) | 2022-07-07 |
Family
ID=35668421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004034677.1A Active DE102004034677B4 (en) | 2004-07-17 | 2004-07-17 | Passenger car with a flow control device |
Country Status (1)
Country | Link |
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DE (1) | DE102004034677B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016020421A1 (en) * | 2014-08-05 | 2016-02-11 | Jaguar Land Rover Limited | Vehicle aerodynamic apparatus |
CN114475265A (en) * | 2022-03-02 | 2022-05-13 | 南京铁道职业技术学院 | Continuous emergency braking device for rail transit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995019287A1 (en) * | 1994-01-14 | 1995-07-20 | National Association For Stock Car Auto Racing, Inc. | Aerodynamic stabilizer for use with a motor vehicle |
DE29912525U1 (en) * | 1999-07-17 | 2000-07-06 | Karmann Gmbh W | Cabriolet vehicle |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4179154A (en) | 1977-11-04 | 1979-12-18 | Four Star Corporation | Air velocity responsive deflector |
DE3837730A1 (en) | 1987-11-06 | 1989-05-24 | Heung Jong Park | Running control device for a vehicle |
DE4207658C2 (en) | 1992-03-11 | 1994-07-21 | Daimler Benz Ag | Flow control device for a vehicle |
DE10222082A1 (en) | 2002-05-17 | 2003-11-27 | Bayerische Motoren Werke Ag | Flow guide device for vehicle especially as rear spoiler which moves into braking position to produce additional aerodynamic air resistance for faster braking |
-
2004
- 2004-07-17 DE DE102004034677.1A patent/DE102004034677B4/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995019287A1 (en) * | 1994-01-14 | 1995-07-20 | National Association For Stock Car Auto Racing, Inc. | Aerodynamic stabilizer for use with a motor vehicle |
DE29912525U1 (en) * | 1999-07-17 | 2000-07-06 | Karmann Gmbh W | Cabriolet vehicle |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016020421A1 (en) * | 2014-08-05 | 2016-02-11 | Jaguar Land Rover Limited | Vehicle aerodynamic apparatus |
US10179613B2 (en) | 2014-08-05 | 2019-01-15 | Jaguar Land Rover Limited | Vehicle aerodynamic apparatus |
CN114475265A (en) * | 2022-03-02 | 2022-05-13 | 南京铁道职业技术学院 | Continuous emergency braking device for rail transit |
CN114475265B (en) * | 2022-03-02 | 2023-06-02 | 南京铁道职业技术学院 | Continuous emergency braking device for rail transit |
Also Published As
Publication number | Publication date |
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DE102004034677B4 (en) | 2022-07-07 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
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Effective date: 20110305 |
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Free format text: PREVIOUS MAIN CLASS: B62D0037020000 Ipc: B62D0035000000 |
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