WO2018189712A1 - Système de suspension de véhicule et procédé de fonctionnement - Google Patents

Système de suspension de véhicule et procédé de fonctionnement Download PDF

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Publication number
WO2018189712A1
WO2018189712A1 PCT/IB2018/052571 IB2018052571W WO2018189712A1 WO 2018189712 A1 WO2018189712 A1 WO 2018189712A1 IB 2018052571 W IB2018052571 W IB 2018052571W WO 2018189712 A1 WO2018189712 A1 WO 2018189712A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
arrangement
suspension system
damper
arrangements
Prior art date
Application number
PCT/IB2018/052571
Other languages
English (en)
Inventor
Albert Lam
Original Assignee
Detroit Electric Ev Limited
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 Detroit Electric Ev Limited filed Critical Detroit Electric Ev Limited
Publication of WO2018189712A1 publication Critical patent/WO2018189712A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • 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
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/532—Electrorheological [ER] fluid dampers
    • 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
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles

Definitions

  • the present disclosure relates to suspension systems of vehicles, for example of electrical vehicles. Moreover, the present disclosure is concerned with the methods of operating aforesaid suspension systems of vehicles, for example of electrical vehicles. Furthermore, the present disclosure relates to software application recorded on machine-readable data storage media, wherein the software application is executable upon computing hardware for implementing aforementioned methods.
  • a performance of a vehicle depends upon a suspension system employed in the vehicle along with an ability of the vehicle to generate torque, to implement work (measured, for example, in horsepower or kW), to provide acceleration and a fuel efficiency of the vehicle.
  • a suspension system is employed to provide steering ability to a driver of a given vehicle and ensure comfort of passengers of the vehicle.
  • the suspension system of the vehicle enhances friction, for example maximizes friction, between tires (“tyres") of the vehicle and a road surface supporting the vehicle to ensure superior handling of the vehicle.
  • the suspension system of the vehicle increases safety of the vehicle and may avoid potentially many road accidents.
  • high performance vehicles are required to operate under standard road conditions that may include irregularities such as loose gravel, potholes, speed bumps, and so forth.
  • conventional suspension systems employed in vehicles use coil suspension springs with oil-filled dampers accommodated within a volume encircled by the coil suspension springs.
  • Such conventional suspension systems provide a fixed suspension performance characteristic that is sufficient to provide a comfortable ride on a smooth surface.
  • such conventional suspension system may not provide shock absorption on highly rough, uneven surfaces.
  • conventional suspension system may not adapt according to the surface of a road.
  • the conventional suspension system may not adapt according to the experience desired by driver of the vehicle.
  • the conventional suspension systems may provide a first-order frequency response in terms of isolating the vehicle chassis from noise of the road.
  • the present disclosure seeks to provide an improved suspension system of a vehicle, for example for an internal combustion engine vehicle and an electrical vehicle.
  • a suspension system of a vehicle wherein the vehicle includes a chassis supported via suspension arrangements onto a plurality of wheels, wherein the suspension arrangements are operable to employ one or more spring- damper arrangements, wherein the spring-damper arrangements are operable to employ a damper implemented by a rheological vibration damper, characterized in that the rheological vibration damper employs a damping material whose viscosity is modulated by a magnetic field applied thereto, wherein the magnetic field is derived in operation from :
  • the present disclosure seeks to provide an efficient suspension system of a vehicle, for example an electrical vehicle; moreover, the suspension system may also provide adaptive damping of vibrations and shocks experienced by the aforementioned vehicle.
  • a method of operating a suspension system of a vehicle wherein the vehicle includes a chassis supported via suspension arrangements onto a plurality of wheels, wherein the suspension arrangements are operable to employ one or more spring-damper arrangements, wherein the method includes arranging for the spring damper arrangements to employ a damper implemented by a rheological vibration damper, characterized in that the rheological vibration damper to employ a damping material whose viscosity is modulated by a magnetic field applied thereto, wherein the magnetic field is derived in operation from :
  • the vehicle is an electrical vehicle.
  • a software product recording on machine-readable data storage media, characterized in that the software product is executable upon computing hardware for implementing a method of operating a suspension system of a vehicle.
  • the vehicle is an electrical vehicle.
  • the present invention is included in the general business context, which aims to substitute vehicles powered by traditional fuels, for example gasoline or diesel, by electric vehicles.
  • the present invention is intended for use in electric vehicles used within cities, which can be highly beneficial to the local environment due to significant reduction of gaseous emissions as well as significant reduction of noise. Overall environmental benefits can also be significant when electric vehicles are charged from renewable energy sources. DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of a chassis of an electrical vehicle, in accordance with an embodiment of the present disclosure
  • FIG. 2 is a block diagram of a spring damper arrangement, in accordance with an embodiment of the present disclosure
  • FIGs. 3 and 4 are schematic illustrations of a rheological vibration damper, in accordance with an embodiment of the present disclosure.
  • FIG. 5 is an illustration of steps of a method of operating a suspension system of an electrical vehicle, in accordance with an embodiment of the present disclosure.
  • an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent.
  • a non- underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non- underlined and accompanied by an associated arrow, the non- underlined number is used to identify a general item at which the arrow is pointing .
  • FIG. 1 there is shown an illustration of a perspective view of a chassis 100 of an electrical vehicle (not shown), in accordance with an embodiment of the present disclosure.
  • the electrical vehicle includes a suspension system associated with the chassis 100.
  • the electrical vehicle includes a chassis 100 supported via suspension arrangements 102 onto a plurality of wheels (not shown) .
  • the chassis 100 includes a pair of front wheels and associated front wheel suspension arrangements 102.
  • the chassis 100 includes a pair of rear wheels and associated rear wheel arrangements (not shown) .
  • the suspension system comprises a transverse roll bar (not shown) mutually linking the front wheel suspension arrangements 102.
  • the suspension arrangements 102 are operable to employ one or more spring-damper arrangements 104 and one or more coil springs 106.
  • the spring-damper arrangements 104 are operable to dampen (or absorb) vibrations that are experienced by the electrical vehicle during operation thereof.
  • the electrical vehicle may be driven on a road with irregularities such as loose gravel, stones, potholes, speed bumps, and so forth.
  • irregularities such as loose gravel, stones, potholes, speed bumps, and so forth.
  • the vertical deflection of the one or more wheels is compensated by compression of the coil springs 106.
  • the spring-damper arrangements 104 are operable to dampen the vibrations experienced by the coil springs 106 to enable a comfortable driving experience for passengers of the electrical vehicle.
  • FIG. 2 there is shown an illustration of a block diagram of the spring damper arrangement 104, in accordance with an embodiment of the present disclosure.
  • the spring damper arrangements 104 are operable to employ a damper implemented by a rheological vibration damper 202.
  • the spring damper arrangement 104 is coupled to the electrical vehicle via mounts 204, 206.
  • the mount 204 is coupled to the chassis 100 of the electrical vehicle and the other mount 206 is operatively coupled to the pair of front wheels of the electrical vehicle.
  • the spring damper arrangements 104 are operable to employ a damper implemented by the rheological vibration damper 202.
  • the term theological vibration damper' as used herein relates to a damper that is configured to use rheological fluid as damping material to dampen the vibrations generated by the plurality of wheels of the electrical vehicle. More optionally, the rheological fluid undergoes a change in its properties when a magnetic field is applied therethrough.
  • FIG. 3 illustrated is a schematic illustration of a rheological vibration damper 302, in accordance with an embodiment of the present disclosure.
  • the rheological vibration damper 302 (such as the rheological vibration damper 202 of FIG.
  • the rheological vibration damper 302 comprises a first cylinder 310 and a second cylinder 312. More optionally, the damping material may be provided in a volume 314 between the first cylinder 310 and the second cylinder 312. Yet more optionally, the second cylinder 312 may concentrically slide relative to the first cylinder 310. In an example, the first cylinder 310 and second cylinder 312 may comprise a piston-cylinder assembly.
  • the rheolog ical vibration damper 302 comprises bushings that a re operable to keep the two cylinders 310 and 312 in an accurate concentric configuration as the two cylinders 310 and 312 slide relative to one another when in operation. In an example, the bushings are made of a non-ferromagnetic material, such as nylon.
  • the damping material of the rheological vibration damper 302 includes a mixture of ferromagnetic particles, an oil and an anti-coagulation agent. More optionally, the ferromagnetic particles are dispersed randomly within the oil when the magnetic field is not applied across the rheological vibration damper 302. Furthermore, the ferromagnetic particles align in chain-like structures along magnetic field lines when the magnetic field is applied across the rheological vibration damper 302.
  • the oil of the damping material is operable to absorb shocks, generated in the plurality of wheels of the electrical vehicle, by undergoing compression. However, the amount of shock absorbed by the oil is substantially low.
  • the chain-like structures modify viscosity of the damping material by changing its rheological properties.
  • the viscosity of the damping material changes depending on the magnetic reluctance 308 applied across the rheological vibration damper 302.
  • the chain-like structures can absorb mechanical forces applied to the second cylinder 312. It will be appreciated that the change (or increase) in viscosity of the damping material can absorb additional vibrations experienced by high performance vehicles. Consequently, the chain-like structures may break down after substantial absorption of the vibrations, thereby increasing a damping capacity of the damping material.
  • presence of an anti-coagulant in the damping material ensures that the ferromagnetic particles do not coagulate into a solid mass and may remain dispersed in the oil.
  • the amount of mechanical forces absorbed by the damping material is directly proportional to the magnetic reluctance 308 applied across the rheological vibration damper 302. More optionally, the magnetic reluctance 308 is regulated by the servo- adjustable magnetic keeper arrangement 306.
  • the magnetic field is derived in operation from an electromagnet.
  • a magnetic reluctance of the electromagnet applied across the rheological vibration damper 302 is regulated by the current flowing through the electromagnet.
  • the current for the electromagnet is derived from a battery unit of the electrical vehicle.
  • the permanent magnet arrangement 304 is associated with the rheological vibration damper 302.
  • the permanent magnet arrangement 304 comprises a fixed part 402 and 404 that is associated with the rheological vibration damper 302 and a movable part 406 that is operatively coupled to the fixed part 402 and 404 by the servo- adjustable magnetic keeper arrangement 306.
  • the servo-adjustable magnetic keeper arrangement 306 is a slider arrangement operable to move the movable part 406 with respect to the fixed part 402 and 404 to regulate magnetic reluctance.
  • the magnetic reluctance of magnetic circuit is dependent on position of the movable part 406 with respect to the fixed part 402 and 404.
  • the servo-adjustable magnetic keeper arrangement 306 is operable to move the movable part 406 to adjust the magnetic reluctance of the magnetic circuit.
  • the magnetic reluctance of the magnetic circuit modulates the viscosity of damping material in the volume 314 between the first cylinder 310 and the second cylinder 312. Consequently, degree of damping provided by the rheological vibration damper 302 is modulated by a change in viscosity of the damping material.
  • the operation of servo-adjustable magnetic keeper arrangement 306 is controlled by driver of the electrical vehicle as described herein later.
  • the magnetic circuit implemented by the permanent magnet arrangement 304 may induce opposite magnetic polarity (such as north and south poles of a bar magnet) on opposite ends of the rheological vibration damper 302. More optionally, the ferromagnetic particles in the damping material align in chain-like structures and the damping material acts like an elastic solid to absorb vibrations (or shocks).
  • the magnetic circuit of the permanent magnet arrangement 304 may comprise a permanent magnet 408 for inducing magnetic fields in the fixed part 402 and 404, and the movable part 406.
  • the servo-adjustable magnetic keeper arrangement 306 comprises a servomotor.
  • the servomotor may be operable to drive a pinion gear that is operable to move a rack and the movable part 406 that is coupled thereto.
  • the electric motor may derive power from the battery unit of the electrical vehicle, in an event when motion of the pinion is required.
  • the servo-adjustable magnetic keeper arrangement 306 is a motorized sliding ring collar to implement a compact arrangement of the suspension arrangement.
  • the movable part 406 is operable to move with respect to the fixed part 402 and 404 to provide different positions, to regulate the magnetic coupling between the permanent magnet arrangement 304 and the rheological vibration damper 302.
  • the movable part 406 may not be in contact with the fixed part 404 to provide a low magnetic coupling therebetween.
  • air that has lower magnetic permeability as compared to the movable part 406 is allowed into the magnetic circuit.
  • the air present between the movable part 406 and fixed part 404 may serve as a dielectric for a transfer of magnetic field.
  • the magnetic reluctance of the magnetic circuit may be substantially low.
  • the movable part 406 may be in contact with the fixed part 404. In such position, magnetic coupling may be intermediary.
  • the movable part 406 may overlap on the fixed part 404 to provide a high magnetic coupling. In such position, the magnetic reluctance of the magnetic circuit may be high.
  • the magnetic circuit may provide sufficiently high magnetic field, to the rheological vibration damper 302, to absorb shocks (or vibrations) of a high magnitude.
  • the configuration of the magnetic circuit shown in FIG. 4 is for illustrative purposes only and other configurations are possible without departing from a scope of the invention.
  • the magnetic circuit may be a hollow circular ring with a cavity and the movable part 406 may be operable to be arranged into the circular ring to complete the magnetic circuit.
  • an operation of the rheological vibration damper 302 is controlled from a software application management and infotainment arrangement that is provided with a graphical user interface for providing for user-adjustment of parameters of the suspension system of the electrical vehicle.
  • operation of the servo-adjustable magnetic keeper arrangement is controlled from a software application management and infotainment arrangement that is provided with a graphical user interface for providing for user- adjustment of parameters of the suspension system of the electrical vehicle.
  • the term ⁇ software application management and infotainment arrangement' as used herein relates to a device- functionality software and/or an operating system software configured to execute other application programs and interface between the application programs and associated hardware (such as display, processor, memory, CAN bus, sensor and so forth).
  • the software application management and infotainment (SAMI) arrangement may be a computing platform, wherein a plurality of computer programs (namely "software applications") may be installed. More specifically, the software application management and infotainment (SAMI) arrangement may be operable to accept data for performing data analysis, strategic control and reporting to a user of the electrical vehicle.
  • the system software defined herein may include a firmware and operating system that may be executed by a single and/or a plurality of processors.
  • the term ⁇ firmware' used herein relates to processor routines that are stored in non-volatile memory structures such as read only memories (ROMs), flash memories, and so forth.
  • the operating system may interact with the firmware for providing the computing platform in which plurality of computer programs may be installed and executed.
  • GUI graphical user interface
  • SAMI software application management and infotainment
  • GUI may be displayed on a display terminal within the electrical vehicle, such as a display panel of a computer.
  • GUI may include control options, on-screen keyboards and pull-down menus to receive input from the user.
  • the user may interact with the graphical user interface (GUI) by employing voice input, keypad input, gesture input, and so forth.
  • software application management and infotainment arrangement is associated with the data processing arrangement of the electrical vehicle.
  • the graphical user interface provides the driver of the electrical vehicle with an option to select among various driving modes such as “comfort”, “economy” , "sport” and so forth.
  • each driving mode is associated with a different set of parameters of the suspension system of the electrical vehicle.
  • the "comfort” driving mode is associated with maximum damping of vibrations experienced by the electrical vehicle. Consequently, servo-adjustable magnetic keeper arrangement 306 may move the movable part 406 to overlap the fixed part 404 to provide high magnetic coupling.
  • the "sport" damping mode is associated with relatively less damping of vibrations experienced by the electrical vehicle.
  • servo-adjustable magnetic keeper arrangement 306 may move the movable part 406 to be in relatively less contact with the fixed part 404 to provide high magnetic coupling.
  • the user interface allows the driver to select a level of driving comfort on a scale of one to ten, wherein level one is associated with least damping provided to the vibrations experienced by the electrical vehicle and level ten is associated with maximum damping that it provided to the vibrations experienced by the electrical vehicle. Consequently, the servo-adjustable magnetic keeper arrangement 306 may move the movable part 406 with respect to the fixed part 404 according to the level of damping selected by the user.
  • the software application management and infotainment arrangement is operable to use a navigation system of the vehicle, for example Global Positioning System (G.P.S), in a manner that conditions of upcoming locations can be determined.
  • G.P.S Global Positioning System
  • the software application management and infotainment arrangement will operate the servo-adjustable magnetic keeper arrangement to move the movable part with respect to the fixed part of the permanent magnet arrangement to regulate magnetic reluctance according to the conditions for example, the topographic conditions, weather conditions and so forth.
  • the electrical vehicle might be moving on a smooth road and the navigation system determines the upcoming road to be rough.
  • the software application management and infotainment arrangement may notify the user, through its graphical user interface (GUI), about the upcoming conditions.
  • GUI graphical user interface
  • the software application management and infotainment arrangement will suggest the user to adjust the parameters of the suspension system.
  • the software application management and infotainment arrangement may operate automatically to adjust the parameters of the suspension system to provide a high level of damping.
  • similar adjustments may be made to the parameters of the suspension system with respect to the road conditions for example, such as uneven roads, smooth roads and the like
  • the suspension system described herein is operable to be implemented for vibration (or shock) absorption in conventional vehicles provided with internal combustion engines.
  • FIG. 5 there is shown an illustration of steps of a method 500 of operating a suspension system (such as the suspension system 102 of FIG. 1) of an electrical vehicle having a chassis supported via suspension arrangements onto a plurality of wheels, in accordance with an embodiment of the present disclosure.
  • a suspension system such as the suspension system 102 of FIG. 1
  • the spring damper arrangements are employed in the suspension arrangements.
  • the spring damper arrangements are arranged to employ a damper implemented by a rheological vibration damper.
  • the method includes arranging for the rheological vibration damper to employ a damping material whose viscosity is modulated by a magnetic field applied thereto, wherein the magnetic field is derived in operation from an electromagnet, and/or a permanent magnet arrangement whose field is coupled to the damping material via a servo-adjustable magnetic keeper arrangement operable to regulate magnetic reluctance of the permanent magnet arrangement.
  • the method includes operating the servo-adjustable magnetic keeper arrangement to move the movable part with respect to the fixed part of the permanent magnet arrangement to regulate magnetic reluctance. Yet more optionally, the method includes controlling operation of the rheological vibration damper from a software application management and infotainment arrangement that is provided with a graphical user interface for providing for user- adjustment of parameters of the suspension system of the electrical vehicle.
  • the method includes controlling operation of the rheological vibration damper from a software application management and infotainment (SAMI) arrangement that is provided with a graphical user interface for providing for user-adjustment of parameters of the suspension system of the electrical vehicle. More optionally, the method includes controlling operation of the servo- adjustable magnetic keeper arrangement from a software application management and infotainment arrangement that is provided with a graphical user interface for providing for user-adjustment of parameters of the suspension system of the electrical vehicle.
  • SAMI software application management and infotainment
  • the present disclosure provides a software product recorded on machine-readable data storage media, characterized in that the software product is executable upon computing hardware for implementing the aforementioned described method 500 of operating a suspension system (such as the suspension system 102) of an electrical vehicle.
  • a suspension system such as the suspension system 102
  • Such a software produced is relevant to operation of a suspension system of an electrical vehicle as described in the foregoing.
  • the suspension system for a vehicle for example for an electrical vehicle but not limited thereto, of the present disclosure provides many benefits and enables adaptive damping of vibrations and shocks experienced by the electrical vehicle.
  • the suspension system effectively provides an extremely high damping ratio of the vibrations (or shocks) experienced by the electrical vehicle.
  • the high damping ratio may ensure a superlative ride quality, even in vehicles fabricated from light-weight materials.
  • the suspension system may adapt according to ride experience desired by the driver of the electrical vehicle.
  • improved suspension arrangement may increase performance of the electrical vehicle by reducing, for example minimizing, energy dissipation due to vibrations.
  • handling of the electrical vehicle may be enhanced by better damping of vibrations (or shocks).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

La présente invention concerne un système de suspension d'un véhicule électrique. Le véhicule électrique comprend un châssis (100) supporté par des agencements de suspension (102) sur une pluralité de roues. Les agencements de suspension (102) sont conçus pour utiliser un ou plusieurs agencements de ressort-amortisseur (104), et les agencements de ressort-amortisseur (104) sont conçus pour utiliser un amortisseur se présentant sous la forme d'un amortisseur de vibrations rhéologiques (202). L'amortisseur de vibrations rhéologiques (202) utilise un matériau d'amortissement dont la viscosité est modulée par un champ magnétique appliqué à celui-ci, le champ magnétique étant dérivé en fonctionnement à partir : (i) d'un électroaimant; et/ou (ii) d'un agencement d'aimants permanents dont le champ est couplé au matériau d'amortissement par l'intermédiaire d'un agencement d'élément de maintien magnétique ajustable par servo-commande conçu pour réguler la réluctance magnétique de l'agencement d'aimants permanents.
PCT/IB2018/052571 2017-04-13 2018-04-12 Système de suspension de véhicule et procédé de fonctionnement WO2018189712A1 (fr)

Applications Claiming Priority (2)

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GB1706032.8 2017-04-13
GB1706032.8A GB2552237B (en) 2017-04-13 2017-04-13 Suspension system of vehicle and method of operation

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WO2018189712A1 true WO2018189712A1 (fr) 2018-10-18

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2552237B (en) * 2017-04-13 2019-07-10 Detroit Electric Ev Ltd Suspension system of vehicle and method of operation
US11718134B1 (en) * 2022-04-22 2023-08-08 Kawasaki Motors, Ltd. Vehicle

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EP0957288A2 (fr) * 1998-05-12 1999-11-17 TRW Inc. Amortisseur de vibrations d'antenne de vaisseau spatial
DE19963580A1 (de) * 1999-12-29 2001-08-09 Autoliv Dev Regelbares Kraftbegrenzungselement
GB2372794B (en) * 2001-02-02 2004-07-07 Trysome Ltd A magnetorheological fluid damper
CN101086179A (zh) * 2007-01-24 2007-12-12 湖南大学 自供电磁流变智能减振系统
CN105172507A (zh) * 2015-07-15 2015-12-23 西南交通大学 一种用于汽车悬架的自供能磁流变减振器系统
GB2552237A (en) * 2017-04-13 2018-01-17 Detroit Electric Ev Ltd Suspension system of vehicle and method of operation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632361A (en) * 1994-09-16 1997-05-27 Fichtel & Sachs Ag Vibration damper, in particular for motor vehicles
EP0957288A2 (fr) * 1998-05-12 1999-11-17 TRW Inc. Amortisseur de vibrations d'antenne de vaisseau spatial
DE19963580A1 (de) * 1999-12-29 2001-08-09 Autoliv Dev Regelbares Kraftbegrenzungselement
GB2372794B (en) * 2001-02-02 2004-07-07 Trysome Ltd A magnetorheological fluid damper
CN101086179A (zh) * 2007-01-24 2007-12-12 湖南大学 自供电磁流变智能减振系统
CN105172507A (zh) * 2015-07-15 2015-12-23 西南交通大学 一种用于汽车悬架的自供能磁流变减振器系统
GB2552237A (en) * 2017-04-13 2018-01-17 Detroit Electric Ev Ltd Suspension system of vehicle and method of operation

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