WO2017103359A1 - Aerodynamic wheel of a vehicle - Google Patents

Aerodynamic wheel of a vehicle Download PDF

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Publication number
WO2017103359A1
WO2017103359A1 PCT/FR2016/052940 FR2016052940W WO2017103359A1 WO 2017103359 A1 WO2017103359 A1 WO 2017103359A1 FR 2016052940 W FR2016052940 W FR 2016052940W WO 2017103359 A1 WO2017103359 A1 WO 2017103359A1
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WO
WIPO (PCT)
Prior art keywords
wheel
radial
blades
aerodynamic
branches
Prior art date
Application number
PCT/FR2016/052940
Other languages
French (fr)
Inventor
Eric Palpacuer
Original Assignee
Peugeot Citroen Automobiles Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2017103359A1 publication Critical patent/WO2017103359A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/02—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body integral with rim
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/10—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group with cooling fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/002—Disc wheels, i.e. wheels with load-supporting disc body characterised by the shape of the disc
    • B60B3/007—Disc wheels, i.e. wheels with load-supporting disc body characterised by the shape of the disc in the intermediate section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/10—Disc wheels, i.e. wheels with load-supporting disc body apertured to simulate spoked wheels
    • 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
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/121—Resisting forces
    • B60B2900/1216—Resisting forces due to air-drag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/513—Cooling, e.g. of brakes
    • 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 invention relates to an aerodynamic wheel of a vehicle, including automobile.
  • the invention relates to an aerodynamic wheel of a vehicle, including a motor vehicle, comprising a rim, branches arranged radially between the central hub and the outer peripheral edge of the rim and intended to ensure alone the mechanical strength of the wheel, characterized in that the wheel further comprises blades arranged radially between the central hub and the outer peripheral edge of the rim and intended only to deflect a lateral air flow and to channel it through radial perforations formed between the blades and the radial branches of the wheel during driving in rotation of the wheel.
  • the branches and the radial blades are regularly spaced apart from each other relative to the central hub, and at least one radial blade is disposed between two consecutive radial branches.
  • the wheel comprises five radial branches and ten radial blades, and two radial blades are arranged between two consecutive radial branches.
  • each radial blade has a length about ten times greater than its width.
  • the radial blades have a profile of the "aircraft wing" type, each having a lower surface and an upper surface, and in that they are inclined at an angle of between 3 ° and 13 °. ° with respect to a plane perpendicular to the axis of rotation of the wheel.
  • each radial blade is oriented towards the inside of the rim so that the lateral air flow can be deflected towards the inside of the wheel through the radial perforations of the wheel. wheel.
  • each radial blade is oriented towards the outside of the rim so that the lateral air flow can be diverted to the outside of the wheel through the radial perforations of the wheel.
  • the radial blades are bent to optimize the speed field related to the centrifugal force exerted by the wheel in rotational motion.
  • the invention also relates to a vehicle, in particular an automobile, each of whose wheels is an aerodynamic wheel as described above.
  • FIG. 1 shows a perspective view of an aerodynamic wheel according to the invention
  • FIG. 2 shows a front view of the aerodynamic wheel along the arrow II of Figure 1;
  • FIG. 3 represents an enlarged partial view, in cross-section and in front of it, showing mainly the cross-section of a radial blade of the wheel of FIG. 1, the intrados of the radial blade being oriented towards the inside of the rim; ;
  • Figure 4 shows a view similar to that of Figure 3, the lower surface of the radial blade being oriented towards the outside of the rim.
  • the reference numeral 1 denotes an aerodynamic wheel which may comprise a tire to form a wheel / tire assembly of a vehicle, particularly automobile. As will be seen below, the wheel 1 is shaped to ensure both a good cooling of the corresponding wheel brake of the vehicle and a low aerodynamic drag without significantly increasing the weight of the wheel 1.
  • the aerodynamic wheel 1 comprises a peripheral portion 2 of generally cylindrical shape which is the wheel rim, a central hub 4, and branches 5 arranged radially between the central hub 4 and the outer peripheral edge 3 of the rim 2, also called rim hook, so that the angle between two consecutive radial branches 5 is constant over the entire periphery of the wheel 1.
  • the wheel 1 comprises five radial branches 5 regularly distributed relative to the central hub 4.
  • These radial branches 5, substantially rectilinear are intended to ensure alone the mechanical strength of the wheel 1.
  • all the mechanical stresses applied to the wheel 1 regardless of their directions, such as radial stresses related to the weight of the vehicle or axial stresses applied to the wheel 1 in particular when moving the vehicle in a bend, are supported only by the radial branches 5 of the wheel 1.
  • these radial branches 5 are sufficiently strong to ensure the mechanical integrity of the wheel 1 and prevent any deformation of the wheel 1 of the vehicle.
  • the aerodynamic rim comprises blades 6 profiled in "aircraft wing" arranged radially between the central hub 4 and the outer peripheral edge 3 of the rim 2.
  • Each radial blade 6 therefore comprises a lower surface 8 and an upper surface 9.
  • the wheel 1 comprises ten radial blades 6.
  • the number of blades radial members 6 between two consecutive radial branches 5 is constant over the entire periphery of the rim 2.
  • there are two radial blades 6 arranged between two radial branches 5 consecutives but it can there may be one or three depending on the width of each radial blade 6.
  • the branches and the radial blades 5, 6 are regularly spaced from each other relative to the central hub 4.
  • the radial blades 6 are only intended to deflect the lateral air flow F, so as to channel this flow F through a plurality of radial openings 7 formed between the blades 6 and the radial branches 5 of the wheel 1, during the rotational driving R of the wheel 1.
  • the profile "aircraft wing” radial blades 6 is a profile type "CLARK Y", relatively simple shape, very effective small scale.
  • the profile "CLARK Y” is a particular aerodynamic profile, very widely used in aeronautical construction and model making.
  • the radial vanes 6 are identical and can be bent in their longitudinal direction, in the same direction which is the opposite direction of the clockwise with reference to FIG. 2, to optimize the force-related velocity field. centrifugal force exerted by the wheel in rotational movement.
  • the radial blades 6 are inclined at an angle of between 3 ° and 13 ° of angle relative to a plane orthogonal to the axis of rotation XX 'of the rim 2.
  • the intrados 8 of the radial blades 6 may be oriented either outwardly of the rim 2, or towards the inside of the rim 2.
  • each radial blade 6 of the wheel 1 is oriented towards the outside of the rim 2, then the lateral air flow F is deflected. to the outside of the wheel 1 through the corresponding radial opening 7.
  • the aerodynamic wheel 1 is then called blower.
  • the radial blades 6 have the sole function of deflecting the lateral air flow F and channeling it through the radial openings 7 of the wheel 1. It is therefore not necessary to size the radial blades 6 so that they are designed to withstand the mechanical stresses that can be applied to the wheel 1.
  • each radial blade 6 of the wheel 1 according to the invention has a length and a width of 40 mm and 4 mm respectively.
  • the wheel 1 of the invention makes it possible to use very thin radial blades 6.
  • the aerodynamic wheel 1 is made in one piece, steel or aluminum.
  • the hub 4, the radial branches 5 and the rim 2 are made in one piece and the radial blades 6 are then secured by welding to the outer peripheral edge 3 and the central hub 4, possibly on one side of a radial branch 5 of the wheel 1.
  • the aerodynamic wheel 1 according to the invention by the presence of radial blades 6 between the successive radial branches 5, reduces the surfaces of the radial openings 7 and, therefore, to increase the flow rate of air flow F crossing the wheel 1, without significant increase in the weight of the wheel 1. This results in a better cooling of the brakes of the vehicle without the performance and energy consumption of the vehicle suffers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to an aerodynamic wheel (1) of a vehicle. The invention is characterized in that the wheel (1) also includes blades (6) arranged radially between the central hub (4) and the outer peripheral edge (3) of the wheel rim (2) and intended solely to deflect a sideways flow of air and direct same through radial openings (7) made between the blades (6) and the radial arms (5) of the wheel (1) when the wheel (1) is rotated (R). The invention is useful in the automotive industry.

Description

ROUE AERODYNAMIQUE D'UN VEHICULE  AERODYNAMIC WHEEL OF A VEHICLE
[0001 ] L'invention concerne une roue aérodynamique d'un véhicule, notamment automobile. The invention relates to an aerodynamic wheel of a vehicle, including automobile.
[0002] Il est connu par la demande de certificat d'utilité FR 0655465 une roue comprenant huit branches radiales s'étendant du moyeu central au bord périphérique de la jante, ces branches étant constituées de pales profilées et orientées de manière à orienter un flux d'air latéral vers l'intérieur de la jante de roue pour réduire la traînée aérodynamique d'un véhicule équipé de telles roues. It is known from the application for a utility certificate FR 0655465 a wheel comprising eight radial branches extending from the central hub to the peripheral edge of the rim, these branches being formed of profiled blades and oriented so as to orient a flow lateral air towards the inside of the wheel rim to reduce the aerodynamic drag of a vehicle equipped with such wheels.
[0003] Cependant, à cause du nombre de branches radiales, les ajourages radiaux entre les branches présentent une surface trop importante pour permettre une déviation correcte du flux d'air latéral. Le résultat est que refroidissement des freins induit par la circulation d'air dans les roues n'est pas optimal. However, because of the number of radial branches, radial openings between the branches have too large a surface to allow a correct deflection of the lateral air flow. The result is that cooling of the brakes induced by the air circulation in the wheels is not optimal.
[0004] Pour pallier cet inconvénient, il est connu de rajouter des branches radiales à la roue pour diminuer la surface des ajourages radiaux définis entre les branches radiales. Une telle solution est divulguée dans la demande de brevet DE 10158408, dans laquelle une roue à quinze branches est proposée. To overcome this drawback, it is known to add radial branches to the wheel to reduce the surface of the radial openings defined between the radial branches. Such a solution is disclosed in patent application DE 10158408, in which a fifteen-spoke wheel is proposed.
[0005] Cependant, une telle solution présente l'inconvénient d'augmenter significativement le poids de la roue, ce qui a un effet délétère sur la consommation énergétique et les performances du véhicule. [0006] La présente invention a pour but de pallier les inconvénients ci-dessus de l'art antérieur. However, such a solution has the disadvantage of significantly increasing the weight of the wheel, which has a deleterious effect on the energy consumption and performance of the vehicle. The present invention aims to overcome the above disadvantages of the prior art.
[0007] Pour atteindre ce but, l'invention concerne une roue aérodynamique d'un véhicule, notamment automobile, comprenant une jante, des branches disposées radialement entre le moyeu central et le bord périphérique externe de la jante et destinées à assurer à elles seules la résistance mécanique de la roue, caractérisée en ce que la roue comprend en outre des pales disposées radialement entre le moyeu central et le bord périphérique externe de la jante et destinées uniquement à dévier un flux d'air latéral et à le canaliser au travers d'ajourages radiaux formés entre les pales et les branches radiales de la roue lors de l'entraînement en rotation de la roue. [0008] Selon une autre particularité, les branches et les pales radiales sont régulièrement espacées les unes des autres relativement au moyeu central, et au moins une pale radiale est disposée entre deux branches radiales consécutives To achieve this object, the invention relates to an aerodynamic wheel of a vehicle, including a motor vehicle, comprising a rim, branches arranged radially between the central hub and the outer peripheral edge of the rim and intended to ensure alone the mechanical strength of the wheel, characterized in that the wheel further comprises blades arranged radially between the central hub and the outer peripheral edge of the rim and intended only to deflect a lateral air flow and to channel it through radial perforations formed between the blades and the radial branches of the wheel during driving in rotation of the wheel. In another feature, the branches and the radial blades are regularly spaced apart from each other relative to the central hub, and at least one radial blade is disposed between two consecutive radial branches.
[0009] Selon une autre particularité, la roue comprend cinq branches radiales et dix pales radiales, et deux des pales radiales sont disposées entre deux branches radiales consécutives. In another feature, the wheel comprises five radial branches and ten radial blades, and two radial blades are arranged between two consecutive radial branches.
[0010] Selon une autre particularité, la section transversale de chaque pale radiale présente une longueur environ dix fois supérieure à sa largeur. In another feature, the cross section of each radial blade has a length about ten times greater than its width.
[001 1 ] Selon une autre particularité, les pales radiales présentent un profil de type « aile d'avion », comportant chacune un intrados et un extrados, et en ce qu'elles sont inclinées d'un angle compris entre 3 ° et 13° par rapport à unplan perpendiculaire à l'axe de rotation de la roue. [001 1] According to another feature, the radial blades have a profile of the "aircraft wing" type, each having a lower surface and an upper surface, and in that they are inclined at an angle of between 3 ° and 13 °. ° with respect to a plane perpendicular to the axis of rotation of the wheel.
[0012] Selon une autre particularité, l'intrados de chaque pale radiale est orienté vers l'intérieur de la jante de sorte que le flux d'air latéral puisse être dévié vers l'intérieur de la roue au travers des ajourages radiaux de la roue. According to another feature, the underside of each radial blade is oriented towards the inside of the rim so that the lateral air flow can be deflected towards the inside of the wheel through the radial perforations of the wheel. wheel.
[0013] Selon une autre particularité, l'intrados de chaque pale radiale est orienté vers l'extérieur de la jante de sorte que le flux d'air latéral puisse être dévié vers l'extérieur de la roue au travers des ajourages radiaux de la roue. According to another feature, the underside of each radial blade is oriented towards the outside of the rim so that the lateral air flow can be diverted to the outside of the wheel through the radial perforations of the wheel.
[0014] Selon une autre particularité, les pales radiales sont courbées pour optimiser le champ de vitesses lié à la force centrifuge exercée par la roue en mouvement de rotation. According to another feature, the radial blades are bent to optimize the speed field related to the centrifugal force exerted by the wheel in rotational motion.
[0015] L'invention concerne également un véhicule, notamment automobile, dont chacune de ses roues est une roue aérodynamique telle que décrite précédemment. The invention also relates to a vehicle, in particular an automobile, each of whose wheels is an aerodynamic wheel as described above.
[0016] L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating a embodiment of the invention and in which:
- La figure 1 représente une vue en perspective d'une roue aérodynamique selon l'invention ; - La figure 2 représente une vue de face de la roue aérodynamique suivant la flèche Il de la figure 1 ; - Figure 1 shows a perspective view of an aerodynamic wheel according to the invention; - Figure 2 shows a front view of the aerodynamic wheel along the arrow II of Figure 1;
- La figure 3 représente une vue partielle agrandie, en coupe transversale et de face montrant principalement la section transversale d'une pale radiale de la roue de la figure 1 , l'intrados de la pale radiale étant orienté vers l'intérieur de la jante ; FIG. 3 represents an enlarged partial view, in cross-section and in front of it, showing mainly the cross-section of a radial blade of the wheel of FIG. 1, the intrados of the radial blade being oriented towards the inside of the rim; ;
- La figure 4 représente une vue semblable à celle de la figure 3, l'intrados de la pale radiale étant orienté vers l'extérieur de la jante. - Figure 4 shows a view similar to that of Figure 3, the lower surface of the radial blade being oriented towards the outside of the rim.
[0017] En référence aux figures 1 à 4, la référence 1 désigne une roue aérodynamique pouvant comporter un pneumatique pour former un ensemble roue/pneumatique d'un véhicule, notamment automobile. Comme on le verra ci-dessous, la roue 1 est conformée pour assurer à la fois un bon refroidissement du frein de roue correspondant du véhicule et une faible traînée aérodynamique sans augmentation significative du poids de la roue 1 . Referring to Figures 1 to 4, the reference numeral 1 denotes an aerodynamic wheel which may comprise a tire to form a wheel / tire assembly of a vehicle, particularly automobile. As will be seen below, the wheel 1 is shaped to ensure both a good cooling of the corresponding wheel brake of the vehicle and a low aerodynamic drag without significantly increasing the weight of the wheel 1.
[0018] La roue aérodynamique 1 comprend une partie périphérique 2 de forme générale cylindrique qui est la jante de roue, un moyeu central 4, et des branches 5 disposées radialement entre le moyeu central 4 et le bord externe périphérique 3 de la jante 2, appelé également crochet de jante, de sorte que l'angle entre deux branches radiales 5 consécutives soit constant sur toute la périphérie de la roue 1 . Préférentiellement, la roue 1 comprend cinq branches radiales 5 régulièrement réparties relativement au moyeu central 4. [0019] Ces branches radiales 5, sensiblement rectilignes, sont destinées à assurer à elles seules la résistance mécanique de la roue 1 . Ainsi, toutes les contraintes mécaniques appliquées à la roue 1 quelles que soient leurs directions, comme par exemple les contraintes radiales liées au poids du véhicule ou des contraintes axiales appliquées à la roue 1 notamment lors du déplacement du véhicule dans un virage, sont supportées uniquement par les branches radiales 5 de la roue 1 . Naturellement, ces branches radiales 5 sont suffisamment résistantes pour assurer l'intégrité mécanique de la roue 1 et éviter toute déformation de la roue 1 du véhicule. The aerodynamic wheel 1 comprises a peripheral portion 2 of generally cylindrical shape which is the wheel rim, a central hub 4, and branches 5 arranged radially between the central hub 4 and the outer peripheral edge 3 of the rim 2, also called rim hook, so that the angle between two consecutive radial branches 5 is constant over the entire periphery of the wheel 1. Preferably, the wheel 1 comprises five radial branches 5 regularly distributed relative to the central hub 4. These radial branches 5, substantially rectilinear, are intended to ensure alone the mechanical strength of the wheel 1. Thus, all the mechanical stresses applied to the wheel 1 regardless of their directions, such as radial stresses related to the weight of the vehicle or axial stresses applied to the wheel 1 in particular when moving the vehicle in a bend, are supported only by the radial branches 5 of the wheel 1. Naturally, these radial branches 5 are sufficiently strong to ensure the mechanical integrity of the wheel 1 and prevent any deformation of the wheel 1 of the vehicle.
[0020] Selon l'invention, la jante aérodynamique comprend des pales 6 profilées en « aile d'avion » disposées radialement entre le moyeu central 4 et le bord périphérique externe 3 de la jante 2. Chaque pale radiale 6 comprend donc un intrados 8 et un extrados 9. Préférentiellement, la roue 1 comprend dix pales radiales 6. Le nombre de pales radiales 6 compris entre deux branches radiales 5 consécutives est constant sur toute la périphérie de la jante 2. Ainsi, dans le mode de réalisation représenté sur les figures, il y a deux pales radiales 6 disposées entre deux branches radiales 5 consécutives, mais il peut y en avoir une seule ou trois suivant la largeur de chaque pale radiale 6. [0021 ] En outre, les branches et les pales radiales 5, 6 sont régulièrement espacées les unes des autres relativement au moyeu central 4. According to the invention, the aerodynamic rim comprises blades 6 profiled in "aircraft wing" arranged radially between the central hub 4 and the outer peripheral edge 3 of the rim 2. Each radial blade 6 therefore comprises a lower surface 8 and an upper surface 9. Preferentially, the wheel 1 comprises ten radial blades 6. The number of blades radial members 6 between two consecutive radial branches 5 is constant over the entire periphery of the rim 2. Thus, in the embodiment shown in the figures, there are two radial blades 6 arranged between two radial branches 5 consecutives, but it can there may be one or three depending on the width of each radial blade 6. [0021] In addition, the branches and the radial blades 5, 6 are regularly spaced from each other relative to the central hub 4.
[0022] Les pales radiales 6 sont uniquement destinées à dévier le flux d'air latéral F, de manière à canaliser ce flux F au travers d'une pluralité d'ajourages radiaux 7 formés entre les pales 6 et les branches radiales 5 de la roue 1 , lors de l'entraînement en rotation R de la roue 1 . The radial blades 6 are only intended to deflect the lateral air flow F, so as to channel this flow F through a plurality of radial openings 7 formed between the blades 6 and the radial branches 5 of the wheel 1, during the rotational driving R of the wheel 1.
[0023] De préférence, le profil « aile d'avion » des pales radiales 6 est un profil de type « CLARK Y », de forme relativement simple, très efficace à petite échelle. Le profil « CLARK Y » est un profil aérodynamique particulier, très largement utilisé dans la construction aéronautique et le modélisme. De plus, les pales radiales 6 sont identiques et peuvent être courbées dans leur direction longitudinale, dans le même sens qui est le sens inverse des aiguilles d'une montre en référence à la figure 2, pour optimiser le champ de vitesses lié à la force centrifuge exercée par la roue en mouvement de rotation. Preferably, the profile "aircraft wing" radial blades 6 is a profile type "CLARK Y", relatively simple shape, very effective small scale. The profile "CLARK Y" is a particular aerodynamic profile, very widely used in aeronautical construction and model making. In addition, the radial vanes 6 are identical and can be bent in their longitudinal direction, in the same direction which is the opposite direction of the clockwise with reference to FIG. 2, to optimize the force-related velocity field. centrifugal force exerted by the wheel in rotational movement.
[0024] En outre, les pales radiales 6 sont inclinées d'un angle compris entre 3° et 13° d'angle par rapport à un plan orthogonal à l'axe de rotation XX' de la jante 2. En fonction du type de déviation de flux d'air F souhaité par le constructeur, les intrados 8 des pales radiales 6 peuvent être orientés soit vers l'extérieur de la jante 2, soit vers l'intérieur de la jante 2. In addition, the radial blades 6 are inclined at an angle of between 3 ° and 13 ° of angle relative to a plane orthogonal to the axis of rotation XX 'of the rim 2. Depending on the type of airflow deflection F desired by the manufacturer, the intrados 8 of the radial blades 6 may be oriented either outwardly of the rim 2, or towards the inside of the rim 2.
[0025] En référence à la figure 3, si l'intrados 8 de chaque pale radiale 6 de la roue 1 est orienté vers l'intérieur de la jante 2, alors le flux d'air latéral F est dévié vers l'intérieur de la roue 1 au travers de l'ajourage radial correspondant 7. La roue aérodynamique 1 est alors dite aspirante. Referring to Figure 3, if the intrados 8 of each radial blade 6 of the wheel 1 is oriented towards the inside of the rim 2, then the lateral air flow F is deflected inwardly of the wheel 1 through the corresponding radial opening 7. The aerodynamic wheel 1 is called suction.
[0026] A l'inverse, en référence à la figure 4, si l'intrados 8 de chaque pale radiale 6 de la roue 1 est orienté vers l'extérieur de la jante 2, alors le flux d'air latéral F est dévié vers l'extérieur de la roue 1 au travers de l'ajourage radial correspondant 7. La roue aérodynamique 1 est alors dite soufflante. [0027] Comme précisé ci-dessus, les pales radiales 6 ont pour fonction unique de dévier le flux d'air latéral F et de le canaliser au travers des ajourages radiaux 7 de la roue 1 . Il n'est donc pas nécessaire de dimensionner les pales radiales 6 de manière à ce qu'elles soient destinées à supporter les contraintes mécaniques pouvant être appliquées à la roue 1 . Conversely, with reference to FIG. 4, if the lower surface 8 of each radial blade 6 of the wheel 1 is oriented towards the outside of the rim 2, then the lateral air flow F is deflected. to the outside of the wheel 1 through the corresponding radial opening 7. The aerodynamic wheel 1 is then called blower. As specified above, the radial blades 6 have the sole function of deflecting the lateral air flow F and channeling it through the radial openings 7 of the wheel 1. It is therefore not necessary to size the radial blades 6 so that they are designed to withstand the mechanical stresses that can be applied to the wheel 1.
[0028] En effet, il est bien connu que l'efficacité des pales radiales 6 ayant un profil « aile d'avion » à dévier le flux d'air latéral F et à le canaliser au travers des ajourages radiaux 7 de la roue 1 est corrélée à une faible surface de section transversale de chaque pale radiale 6. Pour cette raison, la section transversale de chaque pale radiale 6 présente une longueur environ dix fois supérieure à sa largeur de section correspondant à son épaisseur. Il est à noter à ce propos que les figures 3 et 4 ne sont pas à l'échelle. Indeed, it is well known that the effectiveness of the radial blades 6 having a profile "aircraft wing" to deflect the lateral air flow F and to channel through the radial openings 7 of the wheel 1 is correlated with a small cross-sectional area of each radial blade 6. For this reason, the cross section of each radial blade 6 has a length about ten times greater than its section width corresponding to its thickness. It should be noted in this regard that Figures 3 and 4 are not to scale.
[0029] A titre d'exemple non limitatif, chaque pale radiale 6 de la roue 1 selon l'invention présente une longueur et une largeur respectivement de 40 mm et 4 mm. Ainsi, la roue 1 de l'invention permet d'utiliser des pales radiales 6 très minces. [0030] Préférentiellement, la roue aérodynamique 1 est réalisée en une seule pièce, en acier ou en aluminium. De manière alternative, le moyeu 4, les branches radiales 5 et la jante 2 sont réalisées en une seule pièce et les pales radiales 6 sont ensuite solidarisées par soudage au bord périphérique externe 3 et au moyeu central 4, éventuellement sur un côté d'une branche radiale 5 de la roue 1 . [0031 ] La roue aérodynamique 1 selon l'invention, par la présence de pales radiales 6 entre les branches radiales successives 5, permet de réduire les surfaces des ajourages radiaux 7 et, par conséquent, d'augmenter le débit de flux d'air F traversant la roue 1 , sans augmentation significative du poids de la roue 1 . Il en résulte un meilleur refroidissement des freins du véhicule sans que les performances et la consommation énergétique du véhicule n'en pâtissent. By way of non-limiting example, each radial blade 6 of the wheel 1 according to the invention has a length and a width of 40 mm and 4 mm respectively. Thus, the wheel 1 of the invention makes it possible to use very thin radial blades 6. Preferably, the aerodynamic wheel 1 is made in one piece, steel or aluminum. Alternatively, the hub 4, the radial branches 5 and the rim 2 are made in one piece and the radial blades 6 are then secured by welding to the outer peripheral edge 3 and the central hub 4, possibly on one side of a radial branch 5 of the wheel 1. The aerodynamic wheel 1 according to the invention, by the presence of radial blades 6 between the successive radial branches 5, reduces the surfaces of the radial openings 7 and, therefore, to increase the flow rate of air flow F crossing the wheel 1, without significant increase in the weight of the wheel 1. This results in a better cooling of the brakes of the vehicle without the performance and energy consumption of the vehicle suffers.

Claims

REVENDICATIONS
1 . Roue aérodynamique (1 ) d'un véhicule, notamment automobile, comprenant une jante (2), des branches (5) disposées radialement entre le moyeu central (4) et le bord périphérique externe (3) de la jante (2) et destinées à assurer à elles seules la résistance mécanique de la roue (1 ), la roue (1 ) comprenant en outre des pales (6) disposées radialement entre le moyeu central (4) et le bord périphérique externe (3) de la jante (2) et destinées uniquement à dévier un flux d'air latéral (F) et à le canaliser au travers d'ajourages radiaux (7) formés entre les pales (6) et les branches radiales (5) de la roue (1 ) lors de l'entraînement en rotation (R) de la roue (1 ), caractérisée en ce que la section transversale de chaque pale radiale (6) présente une longueur environ dix fois supérieure à sa largeur. 1. Aerodynamic wheel (1) of a vehicle, in particular an automobile, comprising a rim (2), branches (5) arranged radially between the central hub (4) and the outer peripheral edge (3) of the rim (2) and intended to ensure alone the mechanical strength of the wheel (1), the wheel (1) further comprising blades (6) arranged radially between the central hub (4) and the outer peripheral edge (3) of the rim (2). ) and intended only to deflect a lateral air flow (F) and to channel it through radial apertures (7) formed between the blades (6) and the radial branches (5) of the wheel (1) during the rotation drive (R) of the wheel (1), characterized in that the cross section of each radial blade (6) has a length about ten times greater than its width.
2. Roue aérodynamique selon la revendication 1 , caractérisé en ce que les branches et les pales radiales (5, 6) sont régulièrement espacées les unes des autres relativement au moyeu central (4), et au moins une pale radiale (6) est disposée entre deux branches radiales (5) consécutives. Aerodynamic wheel according to claim 1, characterized in that the branches and the radial blades (5, 6) are regularly spaced from one another relative to the central hub (4), and at least one radial blade (6) is arranged between two radial branches (5) consecutive.
3. Roue aérodynamique (1 ) selon la revendication 2, caractérisé en ce qu'elle comprend cinq branches radiales (5) et dix pales radiales (6), et en ce que deux des pales radiales (6) sont disposées entre deux branches radiales (5) consécutives. 3. Aerodynamic wheel (1) according to claim 2, characterized in that it comprises five radial branches (5) and ten radial blades (6), and in that two of the radial blades (6) are arranged between two radial branches (5) consecutive.
4. Roue aérodynamique (1 ) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les pales radiales (6) présentent un profil de type « aile d'avion », comportant chacune un intrados (8) et un extrados (9), et en ce qu'elles sont inclinées d'un angle compris entre 3° et 13 ° par rapport à un plan perpœidiculaire à l'axe de rotation (XX') de la roue (1 ). 4. aerodynamic wheel (1) according to any one of claims 1 to 3, characterized in that the radial blades (6) have a profile of the type "aircraft wing", each having a lower surface (8) and an upper surface (9), and in that they are inclined at an angle of between 3 ° and 13 ° with respect to a plane perpendicular to the axis of rotation (XX ') of the wheel (1).
5. Roue aérodynamique (1 ) selon la revendication 4, caractérisé en ce que l'intrados (8) de chaque pale radiale (6) est orienté vers l'intérieur de la jante (2) de sorte que le flux d'air latéral (F) puisse être dévié vers l'intérieur de la roue (1 ) au travers des ajourages radiaux (7) de la roue (1 ). 5. aerodynamic wheel (1) according to claim 4, characterized in that the pressure (8) of each radial blade (6) is oriented towards the inside of the rim (2) so that the lateral air flow (F) can be deflected towards the inside of the wheel (1) through the radial apertures (7) of the wheel (1).
6. Roue aérodynamique (1 ) selon la revendication 4, caractérisé en ce que l'intrados (8) de chaque pale radiale (6) est orienté vers l'extérieur de la jante (2) de sorte que le flux d'air latéral (F) puisse être dévié vers l'extérieur de la roue (1 ) au travers des ajourages radiaux (7) de la roue (1 ). 6. aerodynamic wheel (1) according to claim 4, characterized in that the intrados (8) of each radial blade (6) is oriented towards the outside of the rim (2) so that the lateral air flow (F) can be deflected outwardly of the wheel (1) through the radial apertures (7) of the wheel (1).
7. Roue aérodynamique (1 ) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les pales radiales (6) sont courbées pour optimiser le champ de vitesses lié à la force centrifuge exercée par la roue (1 ) en mouvement de rotation. Aerodynamic wheel (1) according to one of Claims 1 to 6, characterized in that the radial vanes (6) are curved to optimize the velocity field due to the centrifugal force exerted by the moving wheel (1). of rotation.
8. Véhicule, notamment automobile, caractérisé en ce que chacune de ses roues est une roue aérodynamique (1 ) conforme aux revendications 1 à 7. 8. Vehicle, especially automobile, characterized in that each of its wheels is an aerodynamic wheel (1) according to claims 1 to 7.
PCT/FR2016/052940 2015-12-16 2016-11-14 Aerodynamic wheel of a vehicle WO2017103359A1 (en)

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FR1562504A FR3045460B1 (en) 2015-12-16 2015-12-16 AERODYNAMIC WHEEL OF A VEHICLE

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FR3078922A1 (en) * 2018-03-19 2019-09-20 Psa Automobiles Sa STRUCTURAL WHEEL OF VEHICLE WITH AERODYNAMIC EFFECT AND VEHICLE COMPRISING SUCH A WHEEL
CN110682728A (en) * 2018-07-06 2020-01-14 广州汽车集团股份有限公司 Automobile hub heat dissipation method and device and automobile
FR3092520A1 (en) * 2019-02-12 2020-08-14 Psa Automobiles Sa TRIM WITH AN AERODYNAMIC PROFILE ALLOWING GOOD COOLING OF THE BRAKING SYSTEM
WO2022053224A1 (en) * 2020-09-14 2022-03-17 Daimler Ag Air-guiding device for a motor vehicle, in particular for a passenger car, and motor vehicle
WO2023126657A1 (en) * 2021-12-30 2023-07-06 Maxion Wheels Holding Gmbh Vehicle wheel disc, vehicle wheel including such a wheel disc and method for producing such a wheel disc and vehicle wheel

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IT201800010194A1 (en) * 2018-11-09 2020-05-09 Ferrari Spa RIM FOR A VEHICLE

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EP2560826A1 (en) * 2010-04-17 2013-02-27 Audi AG Rim for a vehicle wheel
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FR3078922A1 (en) * 2018-03-19 2019-09-20 Psa Automobiles Sa STRUCTURAL WHEEL OF VEHICLE WITH AERODYNAMIC EFFECT AND VEHICLE COMPRISING SUCH A WHEEL
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WO2023126657A1 (en) * 2021-12-30 2023-07-06 Maxion Wheels Holding Gmbh Vehicle wheel disc, vehicle wheel including such a wheel disc and method for producing such a wheel disc and vehicle wheel

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