WO2023057696A1 - Inertial suspension device, axle system and vehicle based on such a system - Google Patents

Inertial suspension device, axle system and vehicle based on such a system Download PDF

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Publication number
WO2023057696A1
WO2023057696A1 PCT/FR2022/051688 FR2022051688W WO2023057696A1 WO 2023057696 A1 WO2023057696 A1 WO 2023057696A1 FR 2022051688 W FR2022051688 W FR 2022051688W WO 2023057696 A1 WO2023057696 A1 WO 2023057696A1
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WIPO (PCT)
Prior art keywords
inertial
increaser
suspension device
main
augmentor
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Application number
PCT/FR2022/051688
Other languages
French (fr)
Inventor
Christophe Monteil
Jean Marc ALLEGRE
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Psa Automobiles Sa
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Publication date
Application filed by Psa Automobiles Sa filed Critical Psa Automobiles Sa
Publication of WO2023057696A1 publication Critical patent/WO2023057696A1/en

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1034—Vibration-dampers; Shock-absorbers using inertia effect of movement of a liquid
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/185—Bitubular units
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/346—Throttling passages in the form of slots arranged in cylinder walls

Definitions

  • TITLE INERTIAL SUSPENSION DEVICE, AXLE SYSTEM AND VEHICLE BASED ON SUCH SYSTEM
  • the invention relates to an inertial suspension device with three inertias for a motor vehicle as well as to a front axle system comprising such an inertial suspension.
  • the invention also relates to a motor vehicle comprising such an inertial suspension device.
  • Inertia systems are generally used between a body and the wheels of a motor vehicle to establish a larger apparent mass (or so-called "virtual" mass), for example a virtual mass of 100 kg, for a total mass of about 1300kg.
  • the advantage of adding this virtual mass is to dampen the body mode (low frequency at around 1.5Hz) by increasing the inertia to improve body comfort.
  • the inertia system having three inertias produced by long pipes, generally connected to the cylinder by flexible hoses, must be compacted as much as possible to be integrated into a motor vehicle for a series solution.
  • the document EP2531744 proposes an inertia system composed of a hydraulic inertia device (also called "inert") which uses a column of fluid around a cylinder body to achieve a greater apparent inertia at the level of the body.
  • An object of the present invention is to propose an inertial suspension device with three inertial enhancers, more compact than in the prior art to facilitate its integration into a motor vehicle.
  • the invention proposes a hydraulic inertial suspension device for a motor vehicle, the device comprising
  • a cylinder comprising a cylindrical body and a piston defining upper and lower cylinder chambers
  • inertial augmentors in fluid communication with the inertial augmentors, and with the high and low cylinder chambers, characterized in that the inertial augmentors and the compensation chambers are arranged around the body in at least two concentric helices.
  • the invention makes it possible to use the walls of the cylinder to integrate the three inertial pipes.
  • the whole of the inertial suspension is integrated in a component grouping together all the functions with the same interfaces as a shock absorber.
  • the invention makes it possible to make the inertial suspension device more compact than in the prior art.
  • the cylinder body is used to integrate the various pipes and compensation chambers.
  • the primary inertial augmentor is helically arranged around the body
  • the secondary top inertial augmentor is helically arranged around the primary inertial augmentor and the upper actuator chamber
  • the lower secondary inertial augmentor is arranged in a helix around the main inertial increaser and the lower cylinder chamber, the lower secondary inertial increaser being aligned with and in the extension of the upper secondary inertial increaser.
  • the inertial suspension device comprises
  • top orifice of the top jack chamber in fluid communication with the main inertial increaser at a top end of the top jack chamber
  • This arrangement makes it possible to effectively communicate the actuator chambers with the main inertial augmentor.
  • the top orifice opens into an upper connecting chamber of annular shape, in fluid communication with the main inertial increaser.
  • the bottom orifice opens into a bottom connection chamber of annular shape, arranged around a bottom part of the main inertial increaser and below the bottom secondary inertial increaser, while being in fluid communication with these.
  • the connecting chambers make it possible to connect each secondary inertial increaser to one end of the main inertial increaser.
  • the inertial suspension device comprises longitudinal supply channels between the main inertial increaser and the upper secondary inertial increaser, the supply channels placing the upper actuator chamber and the main inertial increaser in fluid communication with the high secondary inertial augmentor.
  • the high and low compensation chambers are arranged in a high position with respect to the high and low secondary inertial increasers respectively. This ensures that the nitrogen used with the fluid is in the upper part by gravity.
  • the inertial suspension device comprises a pressurized fluid and nitrogen.
  • the invention further relates to a motor vehicle front axle system comprising an inertial suspension device according to the invention.
  • Another object of the invention is a motor vehicle comprising an inertial suspension device according to the invention.
  • FIG.1 illustrates a block diagram of an inertial suspension device according to a preferred embodiment of the invention
  • FIG.2 schematically illustrates an isometric perspective section of a cylinder incorporating an arrangement according to Figure 1;
  • FIG.3 schematically illustrates a longitudinal sectional view of the inertial suspension device of Figure 2;
  • FIG.4 schematically illustrates a close-up view of the upper part of the inertial suspension device of Figure 2;
  • FIG.5 schematically illustrates a cross-sectional view along V-V of Figure 3;
  • FIG.6 schematically illustrates a closer view of the lower part of the inertial suspension device of Figure 2;
  • FIG.7 schematically illustrates a cross-sectional view along VII-VII of Figure 3.
  • the operating principle is based on the architecture with triple inertias, including a main inertia IP (or main inertial increaser) and two secondary inertias IS1, IS2 (or secondary inertial increaser) which allow a beater effect.
  • a main inertia IP or main inertial increaser
  • two secondary inertias IS1, IS2 or secondary inertial increaser
  • the inertial suspension device comprises a jack on a motor vehicle front axle.
  • the actuator connects a vehicle body to a wheel of the motor vehicle.
  • the cylinder comprises a cylindrical body C and a piston P defining upper C1 and lower C2 cylinder chambers.
  • the cylinder moves the fluid in a circuit according to the wheel clearance
  • the inertial suspension device further comprises the main inertial increaser IP (or main inertia) produced for example from a pipe of length between 1 and 4 m with a diameter of 6 to 8 mm.
  • main inertial increaser IP or main inertia
  • the inertial suspension device further comprises the two secondary inertias high IS1, low IS2 of length which can also vary for example from 1 to 4 m for a diameter of 6 to 8 mm.
  • the inertial suspension device further comprises two compensation chambers S1, S2, usually spherical, but preferably annular in the invention. Their role is to compensate for the volume of the rod when the piston moves, but also to produce two stiffnesses between which the inertial fluid will “beat”.
  • the compensation is a volume which contains the fluid and an inert gas, here nitrogen.
  • an inert gas here nitrogen.
  • the clearinghouse may be a free volume.
  • the separation between the gas and the fluid in the volume is done by gravity.
  • the invention aims to make the inertial suspension device more compact than in the prior art.
  • the cylinder body is used to integrate the various pipes and compensation chambers.
  • the main inertial increaser IP is arranged in a helix around the body C, concentrically with the body C.
  • the helix structures are seen by transparency in figures 2, 4 and 6.
  • the secondary high inertial augmentor IS1 is arranged in a helix around a high half of the main inertial augmentor and the high actuator chamber C1.
  • the inertial suspension device comprises a top orifice 01 of the top cylinder chamber C1.
  • the top port 01 puts the top actuator chamber C1 in fluid communication with the main inertial increaser IP at a top end of the top actuator chamber C1.
  • the top orifice 01 opens into a ring-shaped top connection chamber CI1.
  • each AC power channel is arranged in a direction parallel to a central axis of the actuator.
  • the longitudinal AC power channels are arranged around the main inertial increaser IP1, between this and the secondary high inertial increaser IS1.
  • the AC power channels bring the upper connecting chamber CI1 into fluid communication with the upper secondary inertial augmentor IS1.
  • AC power channels help carry the fluid in the high secondary inertial augmentor IS1 upwards, and to have the high compensation chamber S1 above the secondary high inertial augmentor IS1.
  • the inertial suspension device includes a bottom port 02 of the bottom ram chamber C2 in fluid communication with the main inertial augmentor IP1 at the bottom end of the bottom ram chamber C2.
  • the secondary low inertial augmentor IS2 is helically arranged around a lower half of the primary inertial augmentor IP and the lower actuator chamber C2.
  • the low secondary inertial increaser IS2 is aligned with the high secondary inertial increaser IS1, and is an extension of it.
  • a ring-shaped lower connecting chamber CL2 is provided around a lower end of the main inertial increaser IP, below the secondary lower inertial increaser IS2.
  • the low position of the connecting chamber CL2 makes it possible to convey the fluid in the low secondary inertial increaser IS2 upwards and to have the low compensation chamber S2 above the low secondary inertial increaser IS2.
  • the compensation chambers S1, S2 are partially filled with nitrogen and pressurized (as for a shock absorber), they are above the inertias which correspond to them to guarantee that the nitrogen is in the upper part by gravity.
  • the invention further relates to a motor vehicle front axle system comprising an inertial suspension device as described previously.
  • Another object of the invention relates to a motor vehicle comprising an inertial suspension device as described previously.
  • the invention makes it possible to produce a compact, one-piece solution like a shock absorber, which represents an advantage in terms of integration and assembly.
  • the solution makes it possible to make the best use of the inertia created without suffering the disadvantages of bulk in particular.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention relates to a hydraulic inertial suspension device for a vehicle, the device comprising - a cylinder comprising a cylindrical body (C) and a piston (P) delimiting upper (C1) and lower (C2) cylinder chambers; - a primary inertial booster (IP) and upper (IS1) and lower (IS2) secondary inertial boosters in fluidic communication with the cylinder chambers (C1, C2); - upper (S1) and lower (S2) compensation chambers which are in fluidic communication with the inertial boosters (IP, IS1, IS2), and have the upper (C1) and lower (C2) cylinder chambers, characterized in that the inertial boosters (IP, IS1, IS2) and the compensation chambers (S1, S2) are arranged around the body (C) in at least two concentric spirals. The invention also relates to a front axle and to a vehicle based on such a device.

Description

DESCRIPTION DESCRIPTION
TITRE : DISPOSITIF DE SUSPENSION INERTIELLE, SYSTEME D’ESSIEU ET VEHICULE SUR LA BASE D’UN TEL SYSTEME TITLE: INERTIAL SUSPENSION DEVICE, AXLE SYSTEM AND VEHICLE BASED ON SUCH SYSTEM
La présente invention revendique la priorité de la demande française 2110455 déposée le 4 octobre 2021 , dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 2110455 filed on October 4, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
L’invention se rapporte à un dispositif de suspension inertielle à trois inerties pour véhicule automobile ainsi qu’à un système d’essieu avant comportant une telle suspension inertielle. L’invention concerne également un véhicule automobile comprenant un tel dispositif de suspension inertielle. The invention relates to an inertial suspension device with three inertias for a motor vehicle as well as to a front axle system comprising such an inertial suspension. The invention also relates to a motor vehicle comprising such an inertial suspension device.
Les systèmes d’inertie sont généralement utilisés entre une caisse et des roues d’un véhicule automobile pour établir une masse apparente (ou masse dite « virtuelle >>) plus importante, par exemple une masse virtuelle de 100kg, pour une masse totale d’environ 1300kg. Inertia systems are generally used between a body and the wheels of a motor vehicle to establish a larger apparent mass (or so-called "virtual" mass), for example a virtual mass of 100 kg, for a total mass of about 1300kg.
L’intérêt d’ajouter cette masse virtuelle est d’amortir le mode de caisse (basse fréquence à environ 1 .5Hz) par augmentation de l’inertie pour améliorer le confort de caisse. The advantage of adding this virtual mass is to dampen the body mode (low frequency at around 1.5Hz) by increasing the inertia to improve body comfort.
L’inconvénient de cette technologie est qu’elle nécessite des canalisations de grande longueur. Ces longues canalisations, ainsi que les canalisations flexibles de connections entre les différents composants sont difficiles à intégrer dans un véhicule automobile. The disadvantage of this technology is that it requires very long pipes. These long pipes, as well as the flexible connection pipes between the various components, are difficult to integrate into a motor vehicle.
Cette difficulté d’intégration, en particulier pour la suspension d’un essieu avant, peut rendre impossible une solution technique avec cette technologie. This difficulty of integration, in particular for the suspension of a front axle, can make a technical solution impossible with this technology.
Ainsi, le système à inertie ayant trois inerties réalisées par de longues conduites, généralement reliées au vérin par des flexibles, doit être compacté au maximum pour être intégré dans un véhicule automobile pour une solution de série. Thus, the inertia system having three inertias produced by long pipes, generally connected to the cylinder by flexible hoses, must be compacted as much as possible to be integrated into a motor vehicle for a series solution.
Le document EP2531744 propose un système à inertie composé d’un dispositif d’inertie hydraulique (également appelé « inerter >>) qui utilise une colonne de fluide autour d’un corps de vérin pour réaliser une inertie apparente plus importante au niveau de la caisse. Un objectif de la présente invention est de proposer un dispositif de suspension inertielle à trois augmentateurs inertiels, plus compact que dans l’art antérieur pour en faciliter l’intégration dans un véhicule automobile. The document EP2531744 proposes an inertia system composed of a hydraulic inertia device (also called "inert") which uses a column of fluid around a cylinder body to achieve a greater apparent inertia at the level of the body. . An object of the present invention is to propose an inertial suspension device with three inertial enhancers, more compact than in the prior art to facilitate its integration into a motor vehicle.
Pour atteindre cet objectif, l’invention propose un dispositif de suspension inertielle hydraulique pour véhicule automobile, le dispositif comprenantTo achieve this objective, the invention proposes a hydraulic inertial suspension device for a motor vehicle, the device comprising
- un vérin comportant un corps cylindrique et un piston délimitant des chambres de vérin haute et basse, - a cylinder comprising a cylindrical body and a piston defining upper and lower cylinder chambers,
- un augmentateur inertiel principal et des augmentateurs inertiels secondaires haut et bas en communication fluidique avec les chambres de vérin, - a main inertial increaser and secondary up and down inertial increasers in fluid communication with the actuator chambers,
- des chambres de compensation haute et basse en communication fluidique avec les augmentateurs inertiels, et avec les chambres de vérin haute et basse, caractérisé en ce que les augmentateurs inertiels et les chambres de compensation sont agencés autour du corps en au moins deux hélices concentriques. - high and low compensation chambers in fluid communication with the inertial augmentors, and with the high and low cylinder chambers, characterized in that the inertial augmentors and the compensation chambers are arranged around the body in at least two concentric helices.
Avantageusement, l’invention permet d’utiliser les parois du vérin pour intégrer les trois conduites inertielles. Ainsi, l’ensemble de la suspension inertielle est intégré dans un composant regroupant toutes les fonctions avec les mêmes interfaces qu’un amortisseur. Advantageously, the invention makes it possible to use the walls of the cylinder to integrate the three inertial pipes. Thus, the whole of the inertial suspension is integrated in a component grouping together all the functions with the same interfaces as a shock absorber.
L’invention permet de rendre le dispositif de suspension inertielle plus compact que dans l’art antérieur. Pour cela on utilise le corps du vérin pour y intégrer les différents tuyaux et chambres de compensation. The invention makes it possible to make the inertial suspension device more compact than in the prior art. For this, the cylinder body is used to integrate the various pipes and compensation chambers.
Selon une variante, l’augmentateur inertiel principal est agencé en hélice autour du corps, l’augmentateur inertiel secondaire haut est agencé en hélice autour de l’augmentateur inertiel principal et de la chambre de vérin haute, et l’augmentateur inertiel secondaire bas est agencé en hélice autour de l’augmentateur inertiel principal et de la chambre de vérin basse, l’augmentateur inertiel secondaire bas étant aligné avec et dans le prolongement de l’augmentateur inertiel secondaire haut. Cet agencement permet de mettre en oeuvre une configuration à trois augmentateurs inertiels. Alternatively, the primary inertial augmentor is helically arranged around the body, the secondary top inertial augmentor is helically arranged around the primary inertial augmentor and the upper actuator chamber, and the lower secondary inertial augmentor is arranged in a helix around the main inertial increaser and the lower cylinder chamber, the lower secondary inertial increaser being aligned with and in the extension of the upper secondary inertial increaser. This arrangement makes it possible to implement a configuration with three inertial enhancers.
Selon une variante le dispositif de suspension inertielle comprend According to a variant, the inertial suspension device comprises
- un orifice haut de la chambre de vérin haute en communication fluidique avec l’augmentateur inertiel principal à une extrémité haute de la chambre de vérin haute, - a top orifice of the top jack chamber in fluid communication with the main inertial increaser at a top end of the top jack chamber,
- un orifice bas de la chambre de vérin basse en communication fluidique avec l’augmentateur inertiel principal à l’extrémité basse de la chambre de vérin basse. - a bottom orifice of the bottom cylinder chamber in fluid communication with the main inertial augmentor at the low end of the low ram chamber.
Cet agencement permet de faire communiquer efficacement les chambres de vérin avec l’augmentateur inertiel principal. This arrangement makes it possible to effectively communicate the actuator chambers with the main inertial augmentor.
Selon une variante, l’orifice haut débouche dans une chambre de liaison haute de forme annulaire, en communication fluidique avec l’augmentateur inertiel principal. According to a variant, the top orifice opens into an upper connecting chamber of annular shape, in fluid communication with the main inertial increaser.
Selon une variante, l’orifice bas débouche dans une chambre de liaison basse de forme annulaire, agencée autour d’une partie basse de l’augmentateur inertiel principal et en dessous de l’augmentateur inertiel secondaire bas, tout en étant en communication fluidique avec ceux-ci. According to a variant, the bottom orifice opens into a bottom connection chamber of annular shape, arranged around a bottom part of the main inertial increaser and below the bottom secondary inertial increaser, while being in fluid communication with these.
Les chambres de liaisons permettent de relier chaque augmentateur inertiel secondaire à un bout de l’augmentateur inertiel principal. The connecting chambers make it possible to connect each secondary inertial increaser to one end of the main inertial increaser.
Selon une variante le dispositif de suspension inertielle comprend des canaux d’alimentation longitudinaux entre l’augmentateur inertiel principal et l’augmentateur inertiel secondaire haut, les canaux d’alimentation mettant en communication fluidique la chambre de vérin haute et l’augmentateur inertiel principal avec l’augmentateur inertiel secondaire haut. Cet agencement permet de réaliser un écoulement dans l’augmentateur inertiel secondaire haut, du bas vers le haut, de sorte à avoir une chambre de compensation haute au-dessus de l’augmentateur inertiel secondaire haut. According to a variant, the inertial suspension device comprises longitudinal supply channels between the main inertial increaser and the upper secondary inertial increaser, the supply channels placing the upper actuator chamber and the main inertial increaser in fluid communication with the high secondary inertial augmentor. This arrangement makes it possible to achieve a flow in the high secondary inertial augmentor, from bottom to top, so as to have a high compensation chamber above the high secondary inertial augmentor.
Selon une variante, les chambres de compensations haute et basse sont disposées en position haute par rapport aux augmentateurs inertiels secondaires haut et bas respectivement. Cela permet de garantir que l’azote utilisé avec le fluide soit en partie haute par gravité. According to a variant, the high and low compensation chambers are arranged in a high position with respect to the high and low secondary inertial increasers respectively. This ensures that the nitrogen used with the fluid is in the upper part by gravity.
Selon une variante, le dispositif de suspension inertielle comporte un fluide pressurisé et de l’azote. According to a variant, the inertial suspension device comprises a pressurized fluid and nitrogen.
L’invention concerne en outre un système d’essieu avant de véhicule automobile comprenant un dispositif de suspension inertielle selon l’invention. The invention further relates to a motor vehicle front axle system comprising an inertial suspension device according to the invention.
Un autre objet de l’invention est un véhicule automobile comprenant un dispositif de suspension inertielle selon l’invention. Another object of the invention is a motor vehicle comprising an inertial suspension device according to the invention.
L’invention sera davantage détaillée par la description de modes de réalisation non limitatifs, et sur la base des figures annexées illustrant des variantes de l’invention, dans lesquelles : - [Fig.1 ] illustre un schéma fonctionnel d’un dispositif de suspension inertielle selon une variante préférée de l’invention ; The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the appended figures illustrating variants of the invention, in which: - [Fig.1] illustrates a block diagram of an inertial suspension device according to a preferred embodiment of the invention;
- [Fig.2] illustre schématiquement une coupe en perspective isométrique d’un vérin intégrant un agencement selon la figure 1 ; - [Fig.2] schematically illustrates an isometric perspective section of a cylinder incorporating an arrangement according to Figure 1;
- [Fig.3] illustre schématiquement une vue en coupe longitudinale du dispositif de suspension inertielle de la figure 2 ; - [Fig.3] schematically illustrates a longitudinal sectional view of the inertial suspension device of Figure 2;
- [Fig.4] illustre schématiquement une vue rapprochée de la partie haute du dispositif de suspension inertielle de la figure 2 ; - [Fig.4] schematically illustrates a close-up view of the upper part of the inertial suspension device of Figure 2;
- [Fig.5] illustre schématiquement une vue en coupe transversale selon V-V de la figure 3 ; - [Fig.5] schematically illustrates a cross-sectional view along V-V of Figure 3;
- [Fig.6] illustre schématiquement une rapprochée de la partie basse du dispositif de suspension inertielle de la figure 2 ; et - [Fig.6] schematically illustrates a closer view of the lower part of the inertial suspension device of Figure 2; And
- [Fig.7] illustre schématiquement une vue en coupe transversale selon VII-VII de la figure 3. - [Fig.7] schematically illustrates a cross-sectional view along VII-VII of Figure 3.
Le principe de fonctionnement est basé sur l’architecture à inerties triples, y compris une inertie principale IP (ou augmentateur inertiel principal) et deux inerties secondaires IS1 , IS2 (ou augmentateur inertiel secondaire) qui permettent un effet batteur. The operating principle is based on the architecture with triple inertias, including a main inertia IP (or main inertial increaser) and two secondary inertias IS1, IS2 (or secondary inertial increaser) which allow a beater effect.
Le dispositif de suspension inertielle comprend un vérin sur un essieu avant de véhicule automobile. Le vérin connecte une caisse de véhicule à une roue du véhicule automobile. Le vérin comporte un corps C cylindrique et un piston P délimitant des chambres de vérin haute C1 et basse C2. The inertial suspension device comprises a jack on a motor vehicle front axle. The actuator connects a vehicle body to a wheel of the motor vehicle. The cylinder comprises a cylindrical body C and a piston P defining upper C1 and lower C2 cylinder chambers.
Le vérin déplace le fluide dans un circuit en fonction du débattement roueThe cylinder moves the fluid in a circuit according to the wheel clearance
- caisse. - box.
Le dispositif de suspension inertielle comprend en outre l’augmentateur inertiel principal IP (ou inertie principale) réalisé par exemple à partir d’une canalisation de longueur entre 1 et 4 m d’un diamètre de 6 à 8 mm. The inertial suspension device further comprises the main inertial increaser IP (or main inertia) produced for example from a pipe of length between 1 and 4 m with a diameter of 6 to 8 mm.
Le dispositif de suspension inertielle comprend en outre les deux inerties secondaires haute IS1 , basse IS2 de longueur pouvant varier par exemple aussi de 1 à 4 m pour un diamètre de 6 à 8 mm. The inertial suspension device further comprises the two secondary inertias high IS1, low IS2 of length which can also vary for example from 1 to 4 m for a diameter of 6 to 8 mm.
Le dispositif de suspension inertielle comprend en outre deux chambres de compensation S1 , S2, habituellement sphérique, mais de préférence annulaires dans l’invention. Leur rôle est de compenser le volume de la tige lorsque le piston se déplace, mais aussi de réaliser deux raideurs entre lesquelles le fluide d’inertie viendra « battre >>. The inertial suspension device further comprises two compensation chambers S1, S2, usually spherical, but preferably annular in the invention. Their role is to compensate for the volume of the rod when the piston moves, but also to produce two stiffnesses between which the inertial fluid will “beat”.
Comme pour un amortisseur, la compensation est un volume qui contient le fluide et un gaz neutre, ici de l’azote. Quand le volume de fluide varie, par exemple par dilatation ou déplacement du vérin, cette variation est compensée par le volume gaz qui augmente ou diminue. As for a shock absorber, the compensation is a volume which contains the fluid and an inert gas, here nitrogen. When the volume of fluid varies, for example by expansion or movement of the actuator, this variation is compensated by the gas volume which increases or decreases.
La chambre de compensation peut être un volume libre. La séparation entre le gaz et le fluide dans le volume se fait par gravité. The clearinghouse may be a free volume. The separation between the gas and the fluid in the volume is done by gravity.
L’invention vise à rendre le dispositif de suspension inertielle plus compact que dans l’art antérieur. Pour cela on utilise le corps du vérin pour y intégrer les différents tuyaux et chambres de compensation. The invention aims to make the inertial suspension device more compact than in the prior art. For this, the cylinder body is used to integrate the various pipes and compensation chambers.
Comme on peut le voir sur les figures, l’augmentateur inertiel principal IP est agencé en hélice autour du corps C, de manière concentrique avec le corps C. Les structures en hélice sont vues par transparence dans les figures 2, 4 et 6. As can be seen in the figures, the main inertial increaser IP is arranged in a helix around the body C, concentrically with the body C. The helix structures are seen by transparency in figures 2, 4 and 6.
L’augmentateur inertiel secondaire haut IS1 est agencé en hélice autour d’une moitié haute de l’augmentateur inertiel principal et de la chambre de vérin haute C1 . The secondary high inertial augmentor IS1 is arranged in a helix around a high half of the main inertial augmentor and the high actuator chamber C1.
Le dispositif de suspension inertielle comprend un orifice haut 01 de la chambre de vérin haute C1. L’orifice haut 01 met la chambre de vérin haute C1 en communication fluidique avec l’augmentateur inertiel principal IP à une extrémité haute de la chambre de vérin haute C1. L’orifice haut 01 débouche dans une chambre de liaison haute CI1 de forme annulaire. The inertial suspension device comprises a top orifice 01 of the top cylinder chamber C1. The top port 01 puts the top actuator chamber C1 in fluid communication with the main inertial increaser IP at a top end of the top actuator chamber C1. The top orifice 01 opens into a ring-shaped top connection chamber CI1.
Comme l’augmentateur inertiel secondaire haut IS1 est relié à la partie haute de l’augmentateur inertiel principal IP, il y a une série de canaux d’alimentation CA qui permettent au fluide d’entrer par le bas de l’augmentateur inertiel secondaire haut IS1. Dans la variante illustrée, chaque canal d’alimentation CA est agencé suivant une direction parallèle à un axe central du vérin. As the IS1 secondary high inertial augmentor is connected to the top of the IP primary inertial augmentor, there is a series of AC supply channels that allow fluid to enter through the bottom of the secondary high inertial augmentor IS1. In the variant illustrated, each AC power channel is arranged in a direction parallel to a central axis of the actuator.
Les canaux d’alimentation CA longitudinaux sont disposés autour de l’augmentateur inertiel principal IP1 , entre celui-ci et l’augmentateur inertiel secondaire haut IS1. Les canaux d’alimentation CA mettent la chambre de liaison haute CI1 en communication fluidique avec l’augmentateur inertiel secondaire haut IS1. Les canaux d’alimentation CA permettent de véhiculer le fluide dans l’augmentateur inertiel secondaire haut IS1 vers le haut, et d’avoir la chambre de compensation haute S1 au-dessus de l’augmentateur inertiel secondaire haut IS1 . The longitudinal AC power channels are arranged around the main inertial increaser IP1, between this and the secondary high inertial increaser IS1. The AC power channels bring the upper connecting chamber CI1 into fluid communication with the upper secondary inertial augmentor IS1. AC power channels help carry the fluid in the high secondary inertial augmentor IS1 upwards, and to have the high compensation chamber S1 above the secondary high inertial augmentor IS1.
Le dispositif de suspension inertielle comprend un orifice bas 02 de la chambre de vérin basse C2 en communication fluidique avec l’augmentateur inertiel principal IP1 à l’extrémité basse de la chambre de vérin basse C2. The inertial suspension device includes a bottom port 02 of the bottom ram chamber C2 in fluid communication with the main inertial augmentor IP1 at the bottom end of the bottom ram chamber C2.
L’augmentateur inertiel secondaire bas IS2 est agencé en hélice autour d’une moitié basse de l’augmentateur inertiel principal IP et de la chambre de vérin basse C2. The secondary low inertial augmentor IS2 is helically arranged around a lower half of the primary inertial augmentor IP and the lower actuator chamber C2.
L’augmentateur inertiel secondaire bas IS2 est aligné avec l’augmentateur inertiel secondaire haut IS1 , et est dans le prolongement de celui-ci. The low secondary inertial increaser IS2 is aligned with the high secondary inertial increaser IS1, and is an extension of it.
Une chambre de liaison basse CL2 de forme annulaire est prévue autour d’une extrémité basse de l’augmentateur inertiel principal IP, en dessous de l’augmentateur inertiel secondaire bas IS2. La position basse de la chambre de liaison CL2 permet de véhiculer le fluide dans l’augmentateur inertiel secondaire bas IS2 vers le haut et d’avoir la chambre de compensation basse S2 au-dessus de l’augmentateur inertiel secondaire bas IS2. A ring-shaped lower connecting chamber CL2 is provided around a lower end of the main inertial increaser IP, below the secondary lower inertial increaser IS2. The low position of the connecting chamber CL2 makes it possible to convey the fluid in the low secondary inertial increaser IS2 upwards and to have the low compensation chamber S2 above the low secondary inertial increaser IS2.
Les chambres de compensations S1 , S2 sont remplies partiellement d’azote et pressurisées (comme pour un amortisseur), elles se trouvent au- dessus des inerties qui leur correspondent pour garantir que l’azote soit en partie haute par gravité. The compensation chambers S1, S2 are partially filled with nitrogen and pressurized (as for a shock absorber), they are above the inertias which correspond to them to guarantee that the nitrogen is in the upper part by gravity.
L’invention porte en outre sur un système d’essieu avant de véhicule automobile comprenant un dispositif de suspension inertielle tel que décrit précédemment. The invention further relates to a motor vehicle front axle system comprising an inertial suspension device as described previously.
Un autre objet de l’invention concerne un véhicule automobile comprenant un dispositif de suspension inertielle tel que décrit précédemment. Another object of the invention relates to a motor vehicle comprising an inertial suspension device as described previously.
L’invention permet de réaliser une solution compacte, monobloc comme un amortisseur, ce qui représente un avantage en intégration et au montage. En outre, la solution permet d’utiliser au mieux l’inertie créée sans en subir les inconvénients d’encombrement notamment. The invention makes it possible to produce a compact, one-piece solution like a shock absorber, which represents an advantage in terms of integration and assembly. In addition, the solution makes it possible to make the best use of the inertia created without suffering the disadvantages of bulk in particular.

Claims

7 REVENDICATIONS 7 CLAIMS
1 . Dispositif de suspension inertielle hydraulique pour véhicule automobile, le dispositif comprenant 1 . Hydraulic inertial suspension device for a motor vehicle, the device comprising
- un vérin comportant un corps (C) cylindrique et un piston (P) délimitant des chambres de vérin haute (C1 ) et basse (C2), - a cylinder comprising a cylindrical body (C) and a piston (P) defining upper (C1) and lower (C2) cylinder chambers,
- un augmentateur inertiel principal (IP) et des augmentateurs inertiels secondaires haut (IS1 ) et bas (IS2) en communication fluidique avec les chambres de vérin (C1, C2), - a main inertial increaser (IP) and high (IS1) and low (IS2) secondary inertial increasers in fluid communication with the actuator chambers (C1, C2),
- des chambres de compensation haute (S1 ) et basse (S2) en communication fluidique avec les augmentateurs inertiels (IP, IS1 , IS2), et avec les chambres de vérin haute (C1 ) et basse (C2), caractérisé en ce que les augmentateurs inertiels (IP, IS1 , IS2) et les chambres de compensation (S1 , S2) sont agencés autour du corps (C) en au moins deux hélices concentriques. - high (S1) and low (S2) compensation chambers in fluid communication with the inertial augmentors (IP, IS1, IS2), and with the high (C1) and low (C2) cylinder chambers, characterized in that the Inertial augmentors (IP, IS1, IS2) and compensation chambers (S1, S2) are arranged around the body (C) in at least two concentric helices.
2. Dispositif de suspension inertielle selon la revendication 1 , caractérisé en ce que l’augmentateur inertiel principal (IP) est agencé en hélice autour du corps (C), l’augmentateur inertiel secondaire haut (IS1 ) est agencé en hélice autour de l’augmentateur inertiel principal (IP) et de la chambre de vérin haute (C1 ), et l’augmentateur inertiel secondaire bas (IS2) est agencé en hélice autour de l’augmentateur inertiel principal (IP) et de la chambre de vérin basse (C2), l’augmentateur inertiel secondaire bas (IS2) étant aligné avec et dans le prolongement de l’augmentateur inertiel secondaire haut (IS1 ). 2. Inertial suspension device according to claim 1, characterized in that the main inertial increaser (IP) is arranged in a helix around the body (C), the high secondary inertial increaser (IS1) is arranged in a helix around the main inertial augmentor (IP) and the upper actuator chamber (C1), and the secondary lower inertial augmentor (IS2) is arranged in a helix around the main inertial augmentor (IP) and the lower actuator chamber ( C2), the low secondary inertial increaser (IS2) being aligned with and in the extension of the high secondary inertial increaser (IS1).
3. Dispositif de suspension inertielle selon l’une quelconque des revendications 1 à 2, caractérisé en ce qu’il comprend 3. Inertial suspension device according to any one of claims 1 to 2, characterized in that it comprises
- un orifice haut (01 ) de la chambre de vérin haute (C1 ) en communication fluidique avec l’augmentateur inertiel principal (IP) à une extrémité haute de la chambre de vérin haute (C1 ), - an upper orifice (01) of the upper actuator chamber (C1) in fluid communication with the main inertial increaser (IP) at an upper end of the upper actuator chamber (C1),
- un orifice bas (02) de la chambre de vérin basse (C2) en communication fluidique avec l’augmentateur inertiel principal (IP) à l’extrémité basse de la chambre de vérin basse (C2). - a bottom orifice (02) of the lower cylinder chamber (C2) in fluid communication with the main inertial increaser (IP) at the lower end of the lower cylinder chamber (C2).
4. Dispositif de suspension inertielle selon la revendication 3, caractérisé en ce que l’orifice haut (01 ) débouche dans une chambre de liaison haute 8 4. Inertial suspension device according to claim 3, characterized in that the top orifice (01) opens into an upper connecting chamber 8
(Cl 1 ) de forme annulaire, en communication fluidique avec l’augmentateur inertiel principal (IP). (Cl 1 ) ring-shaped, in fluid communication with the main inertial augmentor (IP).
5. Dispositif de suspension inertielle selon l’une quelconque des revendications 3 à 4, caractérisé en ce que l’orifice bas (02) débouche dans une chambre de liaison basse (C12) de forme annulaire, agencée autour d’une partie basse de l’augmentateur inertiel principal (IP) et en dessous de l’augmentateur inertiel secondaire bas (IS2), tout en étant en communication fluidique avec ceux-ci. 5. Inertial suspension device according to any one of claims 3 to 4, characterized in that the lower orifice (02) opens into a lower connection chamber (C12) of annular shape, arranged around a lower part of the primary inertial augmentor (IP) and below the secondary low inertial augmentor (IS2), while being in fluid communication with them.
6. Dispositif de suspension inertielle selon l’une quelconque des revendications 3 à 5, caractérisé en ce qu’il comprend des canaux d’alimentation (CA) longitudinaux entre l’augmentateur inertiel principal (IP) et l’augmentateur inertiel secondaire haut (IS1 ), les canaux d’alimentation (CA) mettant en communication fluidique la chambre de vérin haute (C1 ) et l’augmentateur inertiel principal (IP) avec l’augmentateur inertiel secondaire haut (IS1 ). 6. Inertial suspension device according to any one of claims 3 to 5, characterized in that it comprises longitudinal supply channels (AC) between the main inertial increaser (IP) and the high secondary inertial increaser ( IS1), the supply channels (CA) putting the upper cylinder chamber (C1) and the main inertial increaser (IP) in fluidic communication with the upper secondary inertial increaser (IS1).
7. Dispositif de suspension inertielle selon l’une quelconque des revendications 1 à 6, caractérisé en ce que les chambres de compensation haute (S1 ) et basse (S2) sont disposées en position haute par rapport aux augmentateurs inertiels secondaires haut (IS1 ) et bas (S2) respectivement.7. Inertial suspension device according to any one of claims 1 to 6, characterized in that the high (S1) and low (S2) compensation chambers are arranged in the high position relative to the high secondary inertial increasers (IS1) and low (S2) respectively.
8. Dispositif de suspension inertielle selon l’une quelconque des revendications 1 à 7, caractérisé en ce qu’il comporte un fluide pressurisé et de l’azote. 8. Inertial suspension device according to any one of claims 1 to 7, characterized in that it comprises a pressurized fluid and nitrogen.
9. Système d’essieu avant de véhicule automobile comprenant un dispositif de suspension inertielle selon l’une quelconque des revendications 1 à 8. 9. Motor vehicle front axle system comprising an inertial suspension device according to any one of claims 1 to 8.
10. Véhicule automobile comprenant un dispositif de suspension inertielle selon l’une quelconque des revendications 1 à 8. 10. Motor vehicle comprising an inertial suspension device according to any one of claims 1 to 8.
PCT/FR2022/051688 2021-10-04 2022-09-07 Inertial suspension device, axle system and vehicle based on such a system WO2023057696A1 (en)

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FRFR2110455 2021-10-04
FR2110455A FR3127795A1 (en) 2021-10-04 2021-10-04 INERTIAL SUSPENSION DEVICE, AXLE SYSTEM AND VEHICLE BASED ON SUCH SYSTEM

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670812A (en) * 1950-03-30 1954-03-02 Chrysler Corp Shock absorber
FR2110455A1 (en) 1970-10-15 1972-06-02 Pierret Hubert
EP2531744A1 (en) 2010-02-05 2012-12-12 Cambridge Enterprise Limited Damping and inertial hydraulic device
CN105276060A (en) * 2015-11-10 2016-01-27 江苏大学 Double-pipeline liquid inertia container with variable inerter coefficient
CN109849611A (en) * 2019-02-26 2019-06-07 江苏大学 A kind of multistage adjustable oil gas ISD suspension of used matter coefficient
CN111236722A (en) * 2020-01-20 2020-06-05 同济大学 Limit damper with variable inertial volume
FR3096613A1 (en) * 2019-05-28 2020-12-04 Psa Automobiles Sa VEHICLE SUSPENSION BRAKE DEVICE INCLUDING INERTIAL FLUID COLUMNS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670812A (en) * 1950-03-30 1954-03-02 Chrysler Corp Shock absorber
FR2110455A1 (en) 1970-10-15 1972-06-02 Pierret Hubert
EP2531744A1 (en) 2010-02-05 2012-12-12 Cambridge Enterprise Limited Damping and inertial hydraulic device
CN105276060A (en) * 2015-11-10 2016-01-27 江苏大学 Double-pipeline liquid inertia container with variable inerter coefficient
CN109849611A (en) * 2019-02-26 2019-06-07 江苏大学 A kind of multistage adjustable oil gas ISD suspension of used matter coefficient
FR3096613A1 (en) * 2019-05-28 2020-12-04 Psa Automobiles Sa VEHICLE SUSPENSION BRAKE DEVICE INCLUDING INERTIAL FLUID COLUMNS
CN111236722A (en) * 2020-01-20 2020-06-05 同济大学 Limit damper with variable inertial volume

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