• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a motor vehicle (1) comprising a front diffuser (7), open towards the ground, and comprising a device arranged in the region of the diffuser (7) for modifying the negative lift force of the motor vehicle in the region of a front axle of the motor vehicle. In the case of such a motor vehicle, it is provided according to the invention that the device has an air line (12) with an inlet (13) in the region of a front pressure zone of the motor vehicle and a outlet (14) in the region of the diffuser (7) and means (16) for opening and closing the air duct (12). Thus, the negative lift force of the motor vehicle can be modified with a simple construction and uncomplicated manipulation of the device.
    公开号:FR3063271A1
    申请号:FR1851266
    申请日:2018-02-15
    公开日:2018-08-31
    发明作者:Sebastian Harter；Mathias Roll；Michael Soso
    申请人:Dr Ing HCF Porsche AG；
    IPC主号:
    专利说明:

    Holder (s): DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT.
    Extension request (s)
    Agent (s): CABINET NUSS Limited liability company.
    (£ 4) MOTOR VEHICLE WITH FRONT DIFFUSER.
    FR 3 063 271 - A1 _ The invention relates to a motor vehicle (1) comprising a front diffuser (7), open towards the ground, and comprising a device arranged in the region of the diffuser (7) for modifying the lift force negative of the motor vehicle in the region of a front axle of the motor vehicle.
    In the case of such a motor vehicle, it is provided according to the invention that the device has an air duct (12) with an inlet (13) in the region of a front overpressure zone of the motor vehicle and a outlet (14) in the region of the diffuser (7) as well as means (16) for opening and closing the air duct (12).
    Thus, the negative lift force of the motor vehicle can be changed with simple construction and uncomplicated handling of the device.


    - 1 DESCRIPTION
    The present invention relates to a motor vehicle comprising a front diffuser, open towards the ground, and comprising a device arranged in the region of the diffuser, for modifying the negative lift force of the motor vehicle in the region of a front axle of the motor vehicle .
    In sports cars, a diffuser is generally used in the front part of the motor vehicle, in particular in the region of a front fender lining. This, in addition to increasing a negative lift force at a front axle of the motor vehicle, due to the axle lever, also increases a lift force at the rear axle of the motor vehicle. In order to compensate for the lift force, it is necessary to install a stiffer rear spoiler favoring the negative lift force. For legal reasons, in particular the visibility of a third brake light placed at a height, this is however only possible to a limited extent. Therefore, it is necessary to limit the effect of the diffuser.
    In order to be able to offer the driver the maximum negative lift force, it is known to adjust the rear spoiler beyond the legal value in motor racing. In order to restore the aerodynamic balance of the vehicle, a negative lift force must be produced to an equal extent at the front axle. This occurs in a sports car known in the art by dismantling an L-shaped profile located in the diffuser of the wing lining. However, the disassembly and assembly of the L-shaped profile are clearly limited due to the lack of accessibility of the fixing screws due to the low ground clearance of the motor vehicle, so that a platform is required for this. -lifting form. Apart from that, it is necessary to maintain and protect in stock a dismantled L-profile.
    It is known, in a motor vehicle, from document WO 2016/020520 A1, to provide a channel between two retaining lips, the flow behavior being able to be modified by varying the size of the retaining lips. The channel can also be produced in the form of a diffuser which is open towards a lower side of the vehicle.
    -2Document DE 10 2014 110 199 A1 describes a motor vehicle with a front diffuser and a rear diffuser, these can be adjusted each time around a pivot axis in order to guide an air flow.
    We know from document DE 10 2014 111 073 A1 how to influence a vehicle air flow by means of guide elements, the guide elements being adjustable. In this case, the guide elements are arranged on a wheel arch.
    Document DE 10 2012 102 668 A1 describes adjustable flaps in a lower region of a motor vehicle, which are arranged in an air guide channel and form front diffusers. Thanks to the pivoting of the flaps, the vehicle's lift or negative lift behavior can be influenced.
    It is also known, from document DE 197 05 268 A1, to combine an air flow with a second air flow in order to influence the aerodynamic behavior of a motor vehicle. In this case, the first air flow forms an air wedge around which the second air flow is guided. In this case, a deflector is provided to prevent a lift force at the front axle.
    The object of the present invention is to improve a motor vehicle of the type mentioned in the introduction so that the negative lift force of the motor vehicle in the region of the front axle can be modified with a construction as simple as possible and a uncomplicated handling of the device.
    This object is produced with a motor vehicle having the characteristics of the invention.
    In the motor vehicle according to the invention, provision is made for the device to have an air duct with an inlet in the region of a front overpressure zone of the motor vehicle and an outlet in the region of the diffuser as well as means for open and close the air line.
    The invention takes advantage of the fact that in the front part of a moving motor vehicle, in particular of a motor vehicle moving at high speed, an overpressure zone is formed with which an air flow can be deflected of this overpressure zone in order to be guided in the region of the diffuser and to leave it by locally causing a separation of the flow with the consequence that the
    -3 negative lift force of the motor vehicle is reduced in the region of the front axle. If this reduced negative lift force is not necessary or is not desired, it is only sufficient to interrupt the air flow from the front overpressure zone to the diffuser. In this case, the diffuser is active without disturbance in the case of a higher negative lift force of the motor vehicle in the region of the front axle. In order to modify the negative lift force of the motor vehicle in the region of the front axle, it is therefore sufficient to actuate the means for opening and closing the air duct. If the air line is open, the negative lift force is reduced, and if the air line is closed, a higher negative lift force is produced.
    The air line inlet can be in any suitable area of the front part of the motor vehicle in which an overpressure occurs. This is for example a region in front of a radiator of the motor vehicle, a region before a central front part of the vehicle or a region arranged at the front part, in particular a region in which air is conveyed by what is called an air curtain (known under the English name of "air curtain") by a front covering and / or by a wing lining up to a wheel front and / or a braking device of a front axle. In these regions, the air can simply be deflected with overpressure and be guided into the region of the diffuser.
    It is thus considered to be advantageous for the inlet to be arranged in the region of an air guide for conveying air to a front wheel and / or a braking device for a front wheel. It is further preferable for the entrance to be arranged in the region of a front trim or a wing lining of the motor vehicle. In particular, the diffuser is integrated in a wing lining.
    In the case of the motor vehicle according to the invention, the diffuser is open in the direction of the ground on which the motor vehicle is located, so that the diffuser has an open diffuser lower side.
    Preferably, the diffuser is provided with an upper guide wall through which the negative lift force is generated. In particular, provision is made for the diffuser to present the guide wall
    -4superior and lateral guide walls to guide the air flow from the diffuser.
    The outlet of the air duct can be configured in very different ways, provided that when the air duct is closed, the objective is obtained by means of this of generating a negative lift force at the level of the front axle. In particular, provision is made in this case for the outlet of the air duct to be arranged in the region of the upper or lateral guide wall. The outlet of the air duct is preferably arranged in the region of the first third before the diffuser. The outlet of the air duct may have several outlet openings or one or more outlet slots. The plurality of outlet openings or the plurality of outlet slots may be arranged one beside the other, in particular one behind the other in a transverse direction of the vehicle. In particular, the outlet of the diffuser is in such a transverse plane of the vehicle predefined by the transverse direction.
    It is particularly advantageous for the outlet of the air duct to be made in such a way that when the air duct is open, air enters through the entire width of the diffuser into the latter.
    The air outlet from the outlet is in particular oriented vertically. Thus, when the air usually flows essentially horizontally through the diffuser, a particularly effective stall is obtained, in particular over the entire width of the diffuser, when the air duct is open.
    The means for opening and closing the air duct can be configured in different ways. In particular, these means act or operate mechanically. For example, the means for opening and closing are produced in the form of blocking means or a shut-off valve. It is considered particularly advantageous that the means for opening and closing can be actuated manually, in particular that they are arranged in the region of the wheel arch and that they can be actuated mechanically.
    The configuration of the means for opening and closing, including the improvements described, allows the user of the motor vehicle to switch very simply from the state of the diffuser with a relatively high negative lift force to the state of the diffuser with a dropout, and therefore a relatively low negative lift force, and vice versa. In this case it is in particular not necessary that
    -5the vehicle is lifted by means of a lifting platform to carry out modification work.
    By opening or closing the air duct more or less strongly, one can adjust a defined air flow through the air duct and guide it towards the diffuser, in order to locally cause the desired stall. It is thus possible, using the means for opening and closing the air duct, to vary the volume flow of air through the air duct between closed, fully open positions and various intermediate opening positions of the air line and thus control the stall.
    For example, a shut-off valve can simply be rotated in the various valve positions. No separate tool should be provided to obtain the different operating states. There is also no need to disassemble parts which should then be stored separately.
    Other characteristics of the invention result from the appended drawing and from the description of the preferred embodiment reproduced in the drawing, without however limiting the invention.
    As it happens :
    FIG. 1 illustrates a three-dimensional view of an automobile in the region of a diffuser, viewed obliquely from the rear, and obliquely in the direction opposite to the direction of driving in front of the vehicle, FIG. 2 illustrates the arrangement of the Figure 1 in section in a vertical plane in the region of the air duct.
    It is illustrated, for a motor vehicle 1, concretely a sports car, in its left front part, a partial region of a front trim 2 therein and a partial region of a wing lining 3 disposed behind that -this. The wing lining 3 is associated with the left front wheel of the motor vehicle 1.
    In this case, the indications front, rear, left, right relate to the motor vehicle 1 moving forward. The indications above and below refer to a vehicle moving on horizontal ground.
    The motor vehicle 1 has, on the left between the front trim 2 and the wing lining 3, as well as in front of the left front wheel, a flow channel 4, which is formed by the arrangement of the front trim 2 and wing liner 3 and which extends essentially from the front to
    -6 rear and vertically. This flow channel 4 is thus arranged on edge. When the motor vehicle 1 is traveling, an air overpressure zone is formed in the front region of the vehicle, that is to say at the front. Air is guided into the flow channel 4 through a vertically oriented slit-shaped front inlet 5 and exits at the rear out of the flow channel 4 through a slit-shaped outlet 6 configured in a similar manner, that is to say oriented vertically. Air is thus guided through the flow channel 4 in the manner of an air curtain in the region of the front wheel and a brake disc of the front wheel, which results in a firstly better aerodynamic behavior of the motor vehicle, and secondly additional cooling of the brake disc.
    At the lower side of the front trim 4 and the wing lining 3 is formed a diffuser 7, which extends from the front part, from there to an entrance not shown, to the rear end of the wing lining 3, and from there to the outlet 8 of the diffuser 7. A lower wall of the front covering 2 and a lower wall of the wing lining 3 form, in a respective partial region, a guide wall upper 9 of the diffuser 7. Left and right at the level of the upper guide wall 9, a left guide wall 10 and a right guide wall 11 of the diffuser are connected. The two guide walls 10 and 11 are arranged parallel to each other and are positioned vertically. The diffuser 7 is open downwards, towards the ground, and therefore has no guide wall at this point. The pressure acting vertically in the diffuser 7 therefore acts directly from the upper guide wall 9 in the direction of the ground and causes, depending on the magnitude of the pressure, a more or less significant negative lift force of the motor vehicle 1 in the region of a front axle of the motor vehicle 1 associated with the front wheel.
    In the wing lining 3, preferably consisting of plastic, an air line 12 is integrated. This has an inlet 13 and an outlet 14. The air line 12 opens into the region of the inlet 13 in the flow channel 4, in which there is an air overpressure when the vehicle is moving. The inlet 13 of the air duct 12 is disposed approximately halfway along the flow channel 4, that is to say between its inlet 5 and its outlet 6. The air duct 12 extends from the flow channel 4 through the front casing 2 to the region of the wall
    7 upper guide 9 of the diffuser 7, concretely over the entire region between the left guide wall 10 and the right guide wall 11 parallel to the associated portion of the upper guide wall 9 of the diffuser 7. At this point, the pipe air 12 has a plurality of outlet openings 15 arranged one behind the other, seen in the transverse direction of the vehicle, which open into the diffuser 7.
    In the wing lining 3 are integrated means 16 for opening and closing the air duct 12. It is in this case a stop valve which has a rotary part 17 which can be turned by hand to open and close the access to the air line 12. If the rotary part is in the blocking position illustrated in FIG. 1, a passage of the air flow from the inlet 13 to the outlet 14 of the air line 12 is prevented. If the rotary part 17, on the other hand, is in the open position in which it connects the upstream region of the air duct 12 to the downstream region of the air duct 12, air is pressed with an overpressure in the region of the inlet 13 in the air duct 12, passes through it and exits in the region of the various outlet openings 15 outside the air duct 12. In this case, the outlet openings 15 are oriented vertically and therefore evacuate the air downwards.
    If the air duct 12 is closed, the diffuser 7, because of its diffuser geometry, acts so as to cause a negative lift force of the motor vehicle, defined as a function of the flow conditions, in the region of its front axle. If we want to reduce this negative lift force, the rotary part is rotated until air flows through the air line from inlet 13 to outlet 14 and exits downwards at the lower side of the upper guide wall 9 through the various outlet openings 15, which locally causes a stall, and vice versa.
    The following parts, elements, components, parts and means of the invention are referenced as follows on the accompanying drawings:
    Motor vehicle
    Front paneling
    Wing lining
    Flow channel
    Entrance
    Exit
    Streamer
    -88 Exit
    Upper guide wall
    Left guide wall
    Right guide wall
    Air duct
    Entrance
    Exit
    Outlet opening
    Means
    Rotating part
    Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    1. Motor vehicle (1) comprising a front diffuser (7), open towards the ground, and comprising a device arranged in the region of the diffuser (7) for modifying the negative lift force of the motor vehicle in the region of a front axle of the motor vehicle, characterized in that the device has an air duct (12) with an inlet (13) in the region of a front overpressure zone of the motor vehicle and an outlet (14) in the region of the diffuser (7) and means (16) for opening and closing the air duct (12).
    [2" id="c-fr-0002]
    2. Motor vehicle according to claim 1, characterized in that the inlet (13) is arranged in the region of an air guide (4) to conduct air to a front wheel and / or a device for braking for a front wheel.
    [3" id="c-fr-0003]
    3. Motor vehicle according to claim 1 or 2, characterized in that the inlet (13) is arranged in the region of a front covering (2) or a wing lining (3) of the motor vehicle (1 ).
    [4" id="c-fr-0004]
    4. Motor vehicle according to any one of claims 1 to 3, characterized in that the diffuser (7) is integrated in a wing lining (3).
    [5" id="c-fr-0005]
    5. Motor vehicle according to any one of claims 1 to 4, characterized in that the diffuser (7) has an upper guide wall (9).
    [6" id="c-fr-0006]
    6. Motor vehicle according to claim 5, characterized in that the diffuser (7) has the upper guide wall (9) and lateral guide walls (10, 11) for guiding the air flow from the diffuser.
    [7" id="c-fr-0007]
    7. Motor vehicle according to claim 5 or 6, characterized in that the outlet (14) of the air duct (12) is arranged in the region of the upper guide wall (9) or of the side guide wall (10, 11).
    [8" id="c-fr-0008]
    8. Motor vehicle according to any one of claims 1 to 7, characterized in that the outlet (14) of the air duct (12) is arranged in the region of the first third of the diffuser (7).
    [9" id="c-fr-0009]
    9. Motor vehicle according to any one of claims 1 to 8, characterized in that the outlet (14) of the air duct
    - 10 (12) has several outlet openings (15) or one or more outlet slots.
    [10" id="c-fr-0010]
    10. Motor vehicle according to claim 9, characterized in that the plurality of outlet openings (15) or the plurality of slots
    5 exits are arranged next to each other, in particular one behind the other in a transverse direction of the vehicle (1).
    [11" id="c-fr-0011]
    11. Motor vehicle according to any one of claims 6 to 10, characterized in that the outlet (14) of the air line (12) is produced so that when the air line (12) is open ,
    10 of air enters over the entire width of the diffuser (7) in the latter.
    [12" id="c-fr-0012]
    12. Motor vehicle according to any one of claims 1 to 11, characterized in that the means (16) for opening and closing the air line (12) operate mechanically.
    [13" id="c-fr-0013]
    13. Motor vehicle according to any one of claims 1 to 12, characterized in that the means (16) for opening and closing are produced in the form of a shut-off valve.
    [14" id="c-fr-0014]
    14. Motor vehicle according to any one of claims 1 to 13, characterized in that the means (16) for opening and closing can be actuated manually, in particular can be
    20 mechanically actuated in the region of the wheel arch.
    3.2 ^
    212
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    同族专利:
    公开号 | 公开日
    US10450011B2|2019-10-22|
    DE102017103881A1|2018-08-30|
    FR3063271B1|2021-04-09|
    US20180244325A1|2018-08-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19705268C2|1997-02-12|1999-10-21|Porsche Ag|Motor vehicle with an air guiding device on the bow side|
    ITBO20050457A1|2005-07-08|2007-01-09|Ferrari Spa|HIGH PERFORMANCE CAR WITH AIR BLOWING TO MODIFY THE AERODYNAMIC FIELD|
    DE102012102668A1|2012-03-28|2013-10-02|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Front diffuser for a motor vehicle|
    GB201216941D0|2012-09-21|2012-11-07|Mclaren Automotive Ltd|Devices for controlling the down force generated by a vehicle|
    ITBO20130464A1|2013-08-13|2015-02-14|Ferrari Spa|CAR PROVIDED WITH A VENTILATION CHANNEL|
    DE102014110199A1|2014-07-21|2016-01-21|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Method and control device for operating a motor vehicle with a plurality of air guiding devices|
    DE102014111073A1|2014-08-05|2016-02-11|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|motor vehicle|
    DE102014215732A1|2014-08-08|2016-02-11|Bayerische Motoren Werke Aktiengesellschaft|Air guide arrangement and vehicle with at least one air guide arrangement|DE102014222268A1|2014-10-31|2016-05-04|Bayerische Motoren Werke Aktiengesellschaft|Motor vehicle with a front apron with channel-like louvers|
    GB2536214B|2015-03-05|2020-05-27|Elogab O|Engine system and method of generating electricity from an internal combustion engine|
    DE102016122287A1|2016-11-21|2018-05-24|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Aerodynamically acting rear silencer for a motor vehicle|
    IT201800009561A1|2018-10-18|2020-04-18|Automobili Lamborghini Spa|AERODYNAMIC LOAD REGULATOR DEVICE FOR CARS|
    DE102020117405A1|2020-07-02|2022-01-05|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Air guiding device for an automobile body and an automobile body|
    法律状态:
    2020-02-19| PLFP| Fee payment|Year of fee payment: 3 |
    2020-07-17| PLSC| Publication of the preliminary search report|Effective date: 20200717 |
    2021-02-24| PLFP| Fee payment|Year of fee payment: 4 |
    2022-02-16| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017103881.7A|DE102017103881A1|2017-02-24|2017-02-24|Motor vehicle with front diffuser|
    DE102017103881.7|2017-02-24|
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