Today?s vehicle suspensions use hydraulic dampers (shock absorbers) and springs that are charged with the tasks of absorbing bumps, minimizing the car's body motions while accelerating, braking and turning and keeping the tires in contact with the road surface. Typically, these goals are somewhat at odds with each other. Luxury cars are great at swallowing bumps and providing a plush ride, but handling usually suffers as the car is prone to pitch and dive under acceleration and braking, as well as body lean under cornering .On the other end of the spectrum, stiffly sprung sports cars exhibit minimal body motion as the car is driven aggressively, as cornering is flat, but the ride quality generally suffers.
?In an ongoing research project that has spanned over 24 years Bose has created a unique electromagnetic suspension system for automobiles that is close to commercial release and is set to replace traditional shocks and springs with electronic actuators. "This is the first time a suspension system is the same for a sports car and for a luxury car", said its creator, Dr Amar Bose, chairman and head of technical design. The result is a ride that is level and bump free over incredibly rough terrain and when the vehicle turns in to corners.
Every automotive suspension has two goals: passenger comfort and vehicle control. Comfort is provided by isolating the vehicle?s passengers from road disturbances. Control is achieved by keeping the car body from rolling and pitching excessively, and maintaining good contact between the tire and the road. Unfortunately, these goals are in conflict. In a luxury sedan the suspension is usually designed with an emphasis on comfort, but the result is a vehicle that rolls and pitches while driving and during turning and braking. In sports cars, where the emphasis is on control, the suspension is designed to reduce roll and pitch, but comfort is sacrificed.
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