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An anti-roll bar (roll bar, anti-sway bar, sway bar, stabilizer bar) is an automobile suspension part that helps reduce the body roll of a vehicle during fast cornering or over road irregularities. It links opposite front or rear wheels to a torsion spring using short lever arms for anchors.
By altering stabilizer bar stiffness, this system acts to reduce body tilt during cornering, keeping the vehicle more level during turns and improving handling, as opposed to the natural tendency of a vehicle to roll due to the lateral forces experienced during high-speed maneuvering. The active stabilizer system relies on vehicle body sensors ...
Roll center height is a product of suspension instant center heights and is a useful metric in analyzing weight transfer effects, body roll and front to rear roll stiffness distribution. Conventionally, roll stiffness distribution is tuned adjusting antiroll bars rather than roll center height (as both tend to have a similar effect on the ...
If there is a difference between the position of the center of mass and the roll center a moment arm is created. When the vehicle experiences angular velocity due to cornering, the length of the moment arm, combined with the stiffness of the springs and possibly anti-roll bars (also called 'anti-sway bar'), defines how much the vehicle will ...
Roll center height at design load; Mechanical (or caster) trail; Anti-dive and anti-squat; Kingpin Inclination; Scrub radius; Spring and shock absorber motion ratios; The kinematics describe how important characteristics change as the suspension moves, typically in roll or steer. They include Bump Steer; Roll Steer; Tractive Force Steer; Brake ...
An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface.
The roll bar stiffness at the front is set to compensate for the rear-heaviness and gives neutral handling in ordinary driving. This compensation starts to give out when the wheel lifts. This compensation starts to give out when the wheel lifts.
That is, a stiffer bar would result in more load transfer, keeping the inside tires more firmly planted. This of course plays into the other drawback mentioned, which is loss of independence. Ham Pastrami 09:47, 13 September 2007 (UTC) I added a simple diagram of an anti-roll bar. The other requests would take more doing and understanding.