Land vehicles – Wheeled – Running gear
Patent
1996-01-11
1997-03-11
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
188267, 364424046, B60G 1126
Patent
active
056093535
ABSTRACT:
A variable stiffness suspension bushing (18) for use in a suspension of a motor vehicle comprises a shaft or rod (40) connected to a suspension member (12), an inner cylinder (42) fixedly connected to the shaft or rod (40), and an outer cylinder (44) fixedly connected to a chassis member (16). A magnetorheological (MR) elastomer (48), having iron particles embedded therein, is interposed between the inner (42) and outer (44) cylinders, and a coil (54) is disposed about the inner cylinder (42). When the coil (54) is energized by electrical current provided from a suspension control module (20), a variable magnetic field is generated so as to influence the magnetorheological (MR) elastomer (48) whereby variable stiffness values of the elastomer (48) are obtained to provide the bushing (18) with variable stiffness characteristics in order to eliminate compromises heretofore necessary when using single, fixed rate bushings.
REFERENCES:
patent: 5276623 (1994-01-01), Wolfe
patent: 5277281 (1994-01-01), Carlson et al.
patent: 5354488 (1994-10-01), Shtarkman et al.
patent: 5366211 (1994-11-01), Hamada et al.
patent: 5382373 (1995-01-01), Carlson et al.
patent: 5390121 (1995-02-01), Wolfe
patent: 5396973 (1995-03-01), Schwemmer et al.
patent: 5492312 (1996-02-01), Carlson
patent: 5547049 (1996-08-01), Weiss et al.
Research for New Vibration Isolation Techniques: From Hydro-Mounts to Active Mounts by Andre Gennesseaux, #931324, pp. 491-499.
An Actively Damped Passenger Car Suspension System with Low Voltage Electro-Rheological Magnetic Fluid, by Andrew Pinkos, Emil Shtarkman and Thomas Fitzgerald, #930268, pp. 87-93.
New Z-Direction Anisotropically Conductive Composites, by S. Jin, R. C. Sherwood, J. J. Mottine, T. H. Tiefel, and R. L. Opila, J. Appl. Phys. 64(10), 15 Nov. 1988, pp. 6008-6010.
Optically Transparent, Electrically Conductive Composite Medium, by S. Jin, T. H. Tiefel, R. Wolfe, R. C. Sherwood, and J. J. Mottine, Jr., Science, vol. 255, pp.446-448.
Japanese Patent Application No. Tokugan Hei349111, Patent Laid-Open Publication Number Tokkai Hei-4-266970, Patent Publication Date Sep. 22, 1992, Application Date Feb. 20, 1991.
Brown Gregory P.
Ford Motor Company
Rice Kenneth R.
LandOfFree
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