02-03-2011, 03:52 PM
Presented by
Veeresh Bhusnur
[attachment=9379]
WHAT ARE ‘MR’ FLUIDS?
• Dispersions of Particles made of a soft magnetic material in a carrier oil.
• Carbonyl Iron Particles in Silicone Oil
• A typical MR fluid contains 20–40% by volume of relatively pure, soft iron particles,
• Other Versions made out of Ceramics, or Synthetic Polymers.
Material Behavior
Tiny Iron Particles align with Magnetic Field.
Fluid turns pasty and feels very stiff.
• Reverts to liquid when Magnetic Field is removed.
• The weight and space required by the coils to produce magnetic field is a setback.
• Bose Suspension System
• Uses sensor measurements to instantaneously counteract road forces
• Produces excellent ride quality and superior control in the same system
• Applications of MR Fluid
Vehicle Suspension Dampers
• The MR damper has a built-in MR valve across which the MR fluid is forced. The piston of the MR damper acts as an electromagnet with the required number of coils to produce the appropriate magnetic field. Also the MR damper has a run-through shaft to avoid an accumulator.
Conclusion
• Active control suspensions offer a wider range of comfort and control than most current suspension systems.
• Offers unmatched vehicle handling performance.
• May eventually find their way into more common production vehicles.
Veeresh Bhusnur
[attachment=9379]
WHAT ARE ‘MR’ FLUIDS?
• Dispersions of Particles made of a soft magnetic material in a carrier oil.
• Carbonyl Iron Particles in Silicone Oil
• A typical MR fluid contains 20–40% by volume of relatively pure, soft iron particles,
• Other Versions made out of Ceramics, or Synthetic Polymers.
Material Behavior
Tiny Iron Particles align with Magnetic Field.
Fluid turns pasty and feels very stiff.
• Reverts to liquid when Magnetic Field is removed.
• The weight and space required by the coils to produce magnetic field is a setback.
• Bose Suspension System
• Uses sensor measurements to instantaneously counteract road forces
• Produces excellent ride quality and superior control in the same system
• Applications of MR Fluid
Vehicle Suspension Dampers
• The MR damper has a built-in MR valve across which the MR fluid is forced. The piston of the MR damper acts as an electromagnet with the required number of coils to produce the appropriate magnetic field. Also the MR damper has a run-through shaft to avoid an accumulator.
Conclusion
• Active control suspensions offer a wider range of comfort and control than most current suspension systems.
• Offers unmatched vehicle handling performance.
• May eventually find their way into more common production vehicles.
