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Magneto rheological damper

 

 
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Magneto rheological damper
 
 
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A magnetorheological damper or magnetorheological shock absorber is a damper
Shock absorber

A shock absorber in common parlance is a mechanical device designed to smooth out or damping shock impulse, and dissipate kinetic energy....
 filled with magnetorheological fluid
Magnetorheological fluid

A magnetorheological fluid is a type of smart fluid. It is a suspension of micrometer-sized magnetic particles in a carrier fluid, usually a type of oil....
, which is controlled by a magnetic field
Magnetic field

A magnetism field is a vector field which can exert a magnetic force on moving electric charges and on magnetic dipoles . When placed in a magnetic field, magnetic dipoles tend to align their axes parallel to the magnetic field....
, usually using an electromagnet
Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric Current . The magnetic field disappears when the current ceases....
. This allows the damping characteristics of the shock absorber to be continuously controlled by varying the power of the electromagnet
Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric Current . The magnetic field disappears when the current ceases....
. This type of shock absorber has several applications, most notably in semi-active
Active suspension

Active suspension is an automotive technology that controls the vertical movement of the wheels via an onboard system rather than the movement being determined entirely by the surface on which the car is driving....
 vehicle suspensions which may adapt to road conditions, as they are monitored through sensors in the vehicle, and in prosthetic limbs.

e types of systems are available from OEMs for several vehicles, including the Acura MDX
Acura MDX

The Acura MDX is a mid-size crossover SUV produced by the Japanese automaker Acura since the 2001 model year. The MDX is the first crossover SUV to have third-row seating....
, Audi TT
Audi TT

The Audi TT is a sports car manufactured by Audi since 1998 in Gyor, Hungary, now in its second generation — and available as a 2+2 coup? or two-seater roadster....
 and R8, BMW
BMW

, is an independent German automotive industry founded in 1916. It also produces BMW Motorrad, is the owner of the MINI brand and is the parent company of Rolls-Royce Motor Cars....
s with EDC, Buick Lucerne
Buick Lucerne

The Buick Lucerne is a full-size car sold by the Buick division of General Motors that replaced the Buick Park Avenue and the Buick LeSabre in 2006....
, Cadillac DTS
Cadillac DTS

The Cadillac DTS is a full-size luxury vehicles from the Cadillac luxury vehicles of General Motors. The DTS replaces the Cadillac DeVille as that carmaker's largest luxury car for model year 2006, following the naming and styling direction set by the earlier Cadillac CTS and Cadillac STS....
, Cadillac XLR
Cadillac XLR

The XLR is a retractable hardtop convertible marketed by the Cadillac division of General Motors, assembled in Bowling Green, Kentucky. Based on the GM Y platform automobile platform shared with the Chevrolet Corvette, the XLR uses the Cadillac Northstar engine rather than the GM LS2 engine found in the Corvette — along with its own st...
, Cadillac SRX
Cadillac SRX

The Cadillac SRX is a mid-size Crossover produced by the Cadillac division of United States automaker General Motors since the 2004 model year....
, Cadillac STS
Cadillac STS

The STS is a midsize-size car luxury vehicle car manufactured and sold by Cadillac....
, Chevrolet Corvette
Chevrolet Corvette

The Chevrolet Corvette is a sports car that has been manufactured by General Motors since 1953. The car was originally designed by Harley Earl, and named by Myron Scott after the fast corvette....
, Ferrari 599GTB, and Holden HSV Commodore.






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Encyclopedia


A magnetorheological damper or magnetorheological shock absorber is a damper
Shock absorber

A shock absorber in common parlance is a mechanical device designed to smooth out or damping shock impulse, and dissipate kinetic energy....
 filled with magnetorheological fluid
Magnetorheological fluid

A magnetorheological fluid is a type of smart fluid. It is a suspension of micrometer-sized magnetic particles in a carrier fluid, usually a type of oil....
, which is controlled by a magnetic field
Magnetic field

A magnetism field is a vector field which can exert a magnetic force on moving electric charges and on magnetic dipoles . When placed in a magnetic field, magnetic dipoles tend to align their axes parallel to the magnetic field....
, usually using an electromagnet
Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric Current . The magnetic field disappears when the current ceases....
. This allows the damping characteristics of the shock absorber to be continuously controlled by varying the power of the electromagnet
Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric Current . The magnetic field disappears when the current ceases....
. This type of shock absorber has several applications, most notably in semi-active
Active suspension

Active suspension is an automotive technology that controls the vertical movement of the wheels via an onboard system rather than the movement being determined entirely by the surface on which the car is driving....
 vehicle suspensions which may adapt to road conditions, as they are monitored through sensors in the vehicle, and in prosthetic limbs.

Vehicles

These types of systems are available from OEMs for several vehicles, including the Acura MDX
Acura MDX

The Acura MDX is a mid-size crossover SUV produced by the Japanese automaker Acura since the 2001 model year. The MDX is the first crossover SUV to have third-row seating....
, Audi TT
Audi TT

The Audi TT is a sports car manufactured by Audi since 1998 in Gyor, Hungary, now in its second generation — and available as a 2+2 coup? or two-seater roadster....
 and R8, BMW
BMW

, is an independent German automotive industry founded in 1916. It also produces BMW Motorrad, is the owner of the MINI brand and is the parent company of Rolls-Royce Motor Cars....
s with EDC, Buick Lucerne
Buick Lucerne

The Buick Lucerne is a full-size car sold by the Buick division of General Motors that replaced the Buick Park Avenue and the Buick LeSabre in 2006....
, Cadillac DTS
Cadillac DTS

The Cadillac DTS is a full-size luxury vehicles from the Cadillac luxury vehicles of General Motors. The DTS replaces the Cadillac DeVille as that carmaker's largest luxury car for model year 2006, following the naming and styling direction set by the earlier Cadillac CTS and Cadillac STS....
, Cadillac XLR
Cadillac XLR

The XLR is a retractable hardtop convertible marketed by the Cadillac division of General Motors, assembled in Bowling Green, Kentucky. Based on the GM Y platform automobile platform shared with the Chevrolet Corvette, the XLR uses the Cadillac Northstar engine rather than the GM LS2 engine found in the Corvette — along with its own st...
, Cadillac SRX
Cadillac SRX

The Cadillac SRX is a mid-size Crossover produced by the Cadillac division of United States automaker General Motors since the 2004 model year....
, Cadillac STS
Cadillac STS

The STS is a midsize-size car luxury vehicle car manufactured and sold by Cadillac....
, Chevrolet Corvette
Chevrolet Corvette

The Chevrolet Corvette is a sports car that has been manufactured by General Motors since 1953. The car was originally designed by Harley Earl, and named by Myron Scott after the fast corvette....
, Ferrari 599GTB, and Holden HSV Commodore. These systems are produced by the Delphi Corporation under the proprietary name MagneRide
MagneRide

MagneRide is Delphi Corporation's proprietary name for its Magneto rheological damper suspension system.It was first used by General Motors in the Cadillac Seville STS and later in Chevrolet Corvette C5, and is currently now used as a standard suspension or an option in many models from Cadillac, some models from Buick and Chevrolet, in s...
.

MillenWorks
MillenWorks

MillenWorks, known as Rod Millen Motorsports until 2005, is an automotive technology company started by Rod Millen in 1980. The company began by preparing Millen's rally cars, and evolved into designing and building them....
 has also included them in several military vehicles including the MillenWorks Light Utility Vehicle
MillenWorks Light Utility Vehicle

The MillenWorks Light Utility Vehicle is a prototype testbed for automotive technologies. It was designed and built by MillenWorks under contract to the Tank Automotive Research, Development and Engineering Center....
, and in retrofits to the US Army Stryker
Stryker

The IAV Stryker is a family of eight-wheeled all wheel drive armored combat vehicles produced by General Dynamics Land Systems, in use by the United States Army....
 and HMMWV for testing by TARDEC.

See also

  • Smart fluid
    Smart fluid

    A smart fluid is a fluid whose properties can be changed by applying an electric field or a magnetic field.The most developed smart fluids today are fluids whose viscosity increases when a magnetic field is applied....
  • Magnetorheological fluid
    Magnetorheological fluid

    A magnetorheological fluid is a type of smart fluid. It is a suspension of micrometer-sized magnetic particles in a carrier fluid, usually a type of oil....
  • Ferrofluid
    Ferrofluid

    A ferrofluid is a liquid which becomes strongly polarised in the presence of a magnetic field.Ferrofluids are colloidal mixtures composed of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a Wiktionary:carrier fluid, usually an organic solvent or water....
  • Electrorheological fluid
    Electrorheological fluid

    Electrorheological fluids are suspension s of extremely fine non-conducting particles in an electrically insulating fluid. The apparent viscosity of these fluids changes reversibly by an order of up to 100,000 in response to an electric field....
  • Rheology
    Rheology

    Rheology is the study of the flow of matter: mainly liquids but also soft solids or solids under conditions in which they flow rather than deform elastically....
  • Rheometry
    Rheometry

    Rheometry generically refers to the experimental techniques used to determine the rheological properties of materials, that is the quantitative and qualitative relationships between deformations and Stress and their derivatives....


Sources