2012年9月16日星期日

Principle of modified chassis anti-roll bar


Anti-Roll Bar is usually translated into anti-roll bars, to popular thing you can call it "the next trolley. Reequipped two anti-roll bar to spend more than million budget, but it get manipulated to improve economic efficiency can be said is the highest of all modifications. General production car will be fitted with anti-roll bar, but mostly confined to the front wheel is used to reach a compromise of handling and comfort. The anti-roll bar is usually fixed to the left and right suspension lower arm, the car when cornering the rolling center of the centrifugal force will act in the car caused by body roll, resulting in a suspension of the turning inner wheel and curved outer tension and compression, causing anti The tilting lever is in the stretched reversed, the shaft is twisted to generate a rebound force to suppress the body roll. Here said "roll" and the previously mentioned "body roll" (Roll) is the same;-called "rolling" looked like the car frame in a vertical from the front through the axis of the rear from the front direction , and then do the rotation. Of course, this rotation is a minor, if the rotation angle is too large will be overturned, and that is really scroll.
    
The role of the anti-roll bar
    
When around two passing through the same road bump or hole, anti-roll bar and not have an effect. However, if the left and right wheels respectively, through different road bumps or holes, that is the height of the level of about two are not simultaneously will cause a torsion of the shaft, producing the anti-roll resistance (Roll Resistance) inhibition of body roll. That anti-roll bar when the synchronized movements of the left and right sides of the suspension up and down effect would not only suspended because of the anti-roll bar is not synchronized movements caused by pavement undulations or steering cornering effect only in the left and right sides. Anti-roll bar is only active only make way hardens, unlike the stiff spring will be full of sexual harden road. If you want to completely rely on springs to reduce body roll that may need a very stiff spring, high shock absorbers use more damping coefficient to suppress the bounce of the spring, so we must go to the springs and shock absorbers to withstand hard caused by such way, passing through the uneven road tracking adverse sequelae. But with the appropriate anti-roll bar can not only reduce roll, but do not have to sacrifice comfort and tracking should. Thus, anti-roll bar and spring mix to reach the road and the most feasible method of handling compromise.
    
Characteristics of the anti-roll bar
    
The resistance is provided by the anti-roll bar and springs anti-roll complementary, and anti-roll resistance occur in pairs, which means that the front anti-roll resistance is accompanied and rear anti-roll resistance, but due to the body with weight proportion as well as other external forces will make the front and rear anti-roll resistance and imbalance, this way it will directly affect the transfer of the body weight and handling balance. If the rear wheels of the anti-roll resistance is caused by too large the oversteer (Oversteer), on the contrary, if the front wheel of the anti-roll resistance too cause understeer (Understeer). In order to improve the manipulation we can make use of the anti-roll bars to control body rolling can be used to control the front and back of the body anti-roll resistance proportional distribution.

   The most important function of anti-roll bar affixed to improve tire is reached manipulation of balance and limit body roll when cornering. When cornering the bend wheel suspension elongation and bend the outer wheel suspension is compressed, then the anti-roll bar will generate reverse the inhibition of this case. It would have to bend the outer ring suspension a downward pressure force on the bend wheel suspension applied a lift force and trained them for the forces of the left and right suspension is equal and opposite to each other to contain. Too soft anti-roll bars in the independent suspension of the car when cornering will cause too much camber to reduce the tire contact area is too hard will cause the tires can not be close to the ground, affecting the handling. The curved inner wheel, anti-roll bar facilities wheels wheels applied force and spring force in the opposite direction, the spring force to pressure the wheel back to the ground, and anti-roll bars but make it off the ground. If the anti-roll bar is too hard will reduce pressure to the wheel back to the ground force, if this happens in the wheel, may make the draw bend refueling bend wheel grip smaller caused tire idling.

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