FR2882119A1 - Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve - Google Patents

Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve Download PDF

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Publication number
FR2882119A1
FR2882119A1 FR0501374A FR0501374A FR2882119A1 FR 2882119 A1 FR2882119 A1 FR 2882119A1 FR 0501374 A FR0501374 A FR 0501374A FR 0501374 A FR0501374 A FR 0501374A FR 2882119 A1 FR2882119 A1 FR 2882119A1
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FR
France
Prior art keywords
valve
counter
damper
chamber
pressure
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
FR0501374A
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French (fr)
Inventor
Benjamin Paul Francois Talon
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Individual
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Individual
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Priority to FR0501374A priority Critical patent/FR2882119A1/en
Publication of FR2882119A1 publication Critical patent/FR2882119A1/en
Withdrawn legal-status Critical Current

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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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/504—Inertia, i.e. acceleration,-sensitive means
    • 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
    • F16F9/342—Throttling passages operating with metering pins
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/04—Indexing codes relating to the regulated action or device using inertia type valves
    • 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
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/04—Frequency effects

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The device has a hydraulic or pneumatic channel (1) with an outlet orifice (2) controlled by a main hydraulic or pneumatic restrictor (3), and an inlet opening receiving an inertial valve (5). A control chamber (6) receiving a spring and/or a counter-pressure controls the speed of travel of the valve. The fluid or gas present in the chamber escapes via the machining allowances around the valve and/or via nozzles (7).

Description

La présente invention concerne un dispositif visant à dissocier etThe present invention relates to a device for dissociating and

découpler les phases fréquentielles de fonctionnement d'un amortisseur.  decouple the frequency phases of operation of a damper.

Traditionnellement, un amortisseur ne fait pas de différence entre les fréquences de sollicitation puisque sa réponse est en priorité proportionnelle à la vitesse ou la position de déplacement de la tige du vérin.  Traditionally, a damper does not differentiate between the biasing frequencies since its response is primarily proportional to the speed or position of movement of the cylinder rod.

Les amortisseurs n'utilisant pas cette invention présentent l'inconvénient d'utiliser un compromis permanant sur toutes les phases de fonctionnement. Cette inadaptation de la réponse, fournie par l'amortisseur, a de graves conséquences sur le confort, la performance et la sécurité du véhicule équipé.  Shocks not using this invention have the disadvantage of using a permanent compromise on all phases of operation. This maladaptation of the response provided by the shock absorber has serious consequences for the comfort, performance and safety of the equipped vehicle.

Le dispositif selon l'invention permet de remédier à ce problème. Il comporte en effet une valve qui permet d' empêcher un débit à travers une autre restriction hydraulique (ou pneumatique). Cette valve est initialement en position ouverte et permet le passage du fluide. Lorsque l'amortisseur subit une sollicitation de compression (respectivement de détente), la valve est poussée par la montée en pression, et vient fermer la restriction hydraulique (ou pneumatique) principale. La phase de détente (respectivement de compression) qui suit permet de repousser la valve vers sa position initiale. Afin de différentier les fréquences, cette valve possède un système de régulation qui peut être composé d'un ressort et/ou d'une chambre hydraulique dont la raideur / débit défini la vitesse de fermeture de la valve.  The device according to the invention overcomes this problem. It has in fact a valve which makes it possible to prevent a flow through another hydraulic (or pneumatic) restriction. This valve is initially in the open position and allows the passage of the fluid. When the damper undergoes a compressive stress (respectively relaxation), the valve is pushed by the rise in pressure, and comes close the main hydraulic (or pneumatic) restriction. The relaxation phase (respectively of compression) which follows makes it possible to push the valve towards its initial position. In order to differentiate the frequencies, this valve has a regulation system which can be composed of a spring and / or a hydraulic chamber whose stiffness / flow rate defines the closing speed of the valve.

Ainsi pour une vitesse de tige donnée la valve se déplace mais sous l'effet de la fréquence celle-ci a ou pas le temps de venir obstruer la restriction principale. Cela permet de laisser fonctionner librement la restriction principale sur les hautes fréquences. Une construction inverse permet de libérer les basses fréquences et de verrouiller les hautes fréquences.  Thus for a given stem speed the valve moves but under the effect of the frequency it has or not time to come obstruct the main restriction. This allows the main restriction to be allowed to operate freely at high frequencies. An inverse construction frees the low frequencies and locks the high frequencies.

Selon des modes particuliers de réalisation: É La valve agit sur la phase de compression ou de détente ou sur les deux phases.  According to particular embodiments: É The valve acts on the compression or expansion phase or on the two phases.

É La valve bloque ou libère le passage du fluide ou du gaz sur les 35 basses fréquences (à titre indicatif 2 à 5 Hz) ou sur les hautes fréquences (à titre indicatif 10 à 15 Hz).  The valve blocks or frees the passage of fluid or gas at low frequencies (indicative 2 to 5 Hz) or at high frequencies (indicative 10 to 15 Hz).

É Si le système de régulation est suffisamment dimensionné par rapport à la pression exercée sur la valve, celle-ci peut avoir les mêmes propriétés sur les vitesses de tige (à la place des fréquences si la vitesse de fermeture de la valve est suffisamment lente).  If the regulating system is sufficiently dimensioned with respect to the pressure exerted on the valve, this one can have the same properties on the stem speeds (instead of the frequencies if the closing speed of the valve is sufficiently slow) .

É Tous les paramètres agissants sur le fonctionnement de la valve peuvent être modifiés depuis l'extérieur du système.  É All parameters affecting the operation of the valve can be changed from outside the system.

Les dessins annexés illustrent l'invention: É La figure 1 représente, en coupe, le dispositif de l'invention en 5 position ouverte É La figure 2 représente, en coupe, le dispositif de l'invention en position intermédiaire É La figure 3 représente, en coupe, le dispositif de l'invention en position fermée En référence à ces dessins, le dispositif comporte un canal hydraulique ou pneumatique (1) dont l'un des orifices, la sortie (2) est contrôlée par la restriction principale (3). La restriction principale peut être de différent type: fuite permanente ou valve ou empilage de clapets. L'autre orifice du canal, entrée (4) accueille la valve inertielle (5) qui peut boucher ou ouvrir le canal.  The accompanying drawings illustrate the invention. FIG. 1 represents, in section, the device of the invention in the open position. FIG. 2 represents, in section, the device of the invention in an intermediate position. FIG. , in section, the device of the invention in the closed position With reference to these drawings, the device comprises a hydraulic or pneumatic channel (1), one of the orifices, the outlet (2) is controlled by the main restriction (3). ). The main restriction can be of different type: permanent leak or valve or stack of valves. The other orifice of the channel, inlet (4) accommodates the inertial valve (5) which can plug or open the channel.

La chambre d'accueil du ressort et /ou de la contre pression de régulation (6) permet de contrôler la vitesse de déplacement de la valve inertielle (5). Le fluide ou le gaz présent dans cette chambre s'échappe par les tolérances d'usinage (guidage de la valve dans le canal 1) autour de la valve et par les trous calibrés (7).  The chamber for receiving the spring and / or the regulating counterpressure (6) makes it possible to control the speed of movement of the inertial valve (5). The fluid or the gas present in this chamber escapes through the machining tolerances (guiding the valve in the channel 1) around the valve and through the calibrated holes (7).

La pression due au mouvement de l'amortisseur, sur la face de la valve inertielle (5) du côté de l'entrée met en mouvement cette dernière comme l'illustrent les figures 2 et 3. La valve inertielle (5) vient progressivement boucher le passage du canal et empêche la restriction (2) de fonctionner.  The pressure due to the movement of the damper, on the face of the inertial valve (5) on the input side moves the latter as illustrated in Figures 2 and 3. The inertial valve (5) is gradually plugging the passage of the channel and prevents the restriction (2) from functioning.

Un système inverse peut aisément être envisagé (non représenté ici) .  An inverse system can easily be envisaged (not shown here).

Sur la phase de fonctionnement suivante, la pression d'entrée devient inférieure à la pression de sortie, et le fluide circule dans l'autre sens: de (2) vers (4). La valve revient à sa position initiale.  On the next operating phase, the inlet pressure becomes lower than the outlet pressure, and the fluid flows in the other direction: from (2) to (4). The valve returns to its original position.

Le système permet, suivant la forme de la valve et le type de régulation, de contrôler, en fréquence ou en vitesse de tige d'amortisseur, l'ouverture ou la fermeture de la restriction principale. De plus le système est autonome et s'adapte sur tout type d'application, y compris mécatronique A titre d'exemple non limitatif, la valve aura des dimensions de l'ordre de 20 mm de longueur avec un diamètre de 10 mm.  The system allows, according to the shape of the valve and the type of regulation, to control, in frequency or speed of damper rod, the opening or closing of the main restriction. In addition the system is autonomous and adapts to any type of application, including mechatronics As a non-limiting example, the valve will have dimensions of the order of 20 mm in length with a diameter of 10 mm.

Le dispositif selon l'invention est particulièrement destiné à la différentiation fréquentielle des phases de fonctionnement des amortisseurs et permet également d'apporter des variations importantes de comportement dynamique de l'amortisseur. 1) 2) 3) 4) 5)  The device according to the invention is particularly intended for the frequency differentiation of the operating phases of the dampers and also makes it possible to provide significant variations in the dynamic behavior of the damper. 1) 2) 3) 4) 5)

Claims (1)

3 2882119 REVENDICATIONS3 2882119 Claims Dispositif pour différentier les phases de fonctionnement d'un amortisseur caractérisé en ce qu'il comporte un canal hydraulique ou pneumatique (1) dont l'un des orifices, la sortie (2) est contrôlé par la restriction principale (3), l'autre orifice du canal, l'entrée (4) accueillant une valve inertielle (5) qui peut boucher ou ouvrir le canal et en ce que le dispositif comprend une chambre d'accueil d'un ressort et /ou de contre pression de régulation (6) qui permet de contrôler la vitesse de déplacement de la valve inertielle (5).  Device for differentiating the operating phases of a damper, characterized in that it comprises a hydraulic or pneumatic channel (1), one of whose orifices, the outlet (2) is controlled by the main restriction (3), the another orifice of the channel, the inlet (4) accommodating an inertial valve (5) which can plug or open the channel and in that the device comprises a chamber for receiving a spring and / or counter-pressure regulating ( 6) which controls the speed of movement of the inertial valve (5). Dispositif selon la revendication 1, caractérisé en que le fluide ou le gaz présent dans la chambre de contre pression (6) s'échappe par les tolérances d'usinage autour de la valve et/ou par les trous calibrés (7).  Device according to claim 1, characterized in that the fluid or gas present in the counter-pressure chamber (6) escapes through the machining tolerances around the valve and / or through the calibrated holes (7). Dispositif selon la revendication 1 ou 2 caractérisée en ce que la valve revient en position initiale sous l'effet de la pression et/ou de l'effort du ressort.  Device according to claim 1 or 2 characterized in that the valve returns to its initial position under the effect of the pressure and / or the force of the spring. Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le système permet, suivant la forme de la valve et le type de régulation, de contrôler, en fréquence ou en vitesse de tige d'amortisseur, l'ouverture ou la fermeture de la restriction principale.  Device according to any one of the preceding claims, characterized in that the system allows, according to the shape of the valve and the type of regulation, to control, in terms of frequency or speed of damper rod, the opening or closing of the main restriction. Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le système est autonome et s'adapte sur tout type d'application, y compris mécatronique  Device according to any one of the preceding claims, characterized in that the system is autonomous and adapts to any type of application, including mechatronics
FR0501374A 2005-02-11 2005-02-11 Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve Withdrawn FR2882119A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0501374A FR2882119A1 (en) 2005-02-11 2005-02-11 Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve

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Application Number Priority Date Filing Date Title
FR0501374A FR2882119A1 (en) 2005-02-11 2005-02-11 Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve

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FR2882119A1 true FR2882119A1 (en) 2006-08-18

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FR0501374A Withdrawn FR2882119A1 (en) 2005-02-11 2005-02-11 Damper`s operational phase frequential differentiation device for vehicle, has main hydraulic/pneumatic restrictor, and chamber, receiving spring and/or counter-pressure and filled with fluid/gas, to control travel speed of inertial valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2212582B1 (en) * 2007-11-19 2017-05-31 Magneti Marelli Cofap Fabricadora de Peças Ltda. Hydraulic variable shock absorber with flow control valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726272A (en) * 1927-08-04 1929-08-27 Macdonald Ranald Macintosh Shock absorber
CA2514084A1 (en) * 2003-01-21 2004-08-05 Viktor Hennadievich Pereverzev Method for regulating hydraulic resistance of a shock absorber during the operation thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726272A (en) * 1927-08-04 1929-08-27 Macdonald Ranald Macintosh Shock absorber
CA2514084A1 (en) * 2003-01-21 2004-08-05 Viktor Hennadievich Pereverzev Method for regulating hydraulic resistance of a shock absorber during the operation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2212582B1 (en) * 2007-11-19 2017-05-31 Magneti Marelli Cofap Fabricadora de Peças Ltda. Hydraulic variable shock absorber with flow control valve

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