Characteristics Of Torsion Bars

The anti-roll resistance provided by the anti-roll bar and the spring is complementary, and the anti-roll resistance occurs in pairs, that is to say, the anti-roll resistance of the front is accompanied by the anti-roll resistance of the rear, but due to the body weight The relationship between the ratio and other external forces will make the front and rear anti-roll resistance unbalanced, which will directly affect the transfer of body weight and the balance of handling. If the anti-roll resistance of the rear wheel is too large, it will cause oversteer (Oversteer), and if the anti-roll resistance of the front wheel is too large, it will cause understeer (Understeer). In order to improve the handling, we can not only use the anti-roll bar to control the rolling of the body, but also can be used to control the front-to-rear ratio of the anti-roll resistance of the body. The important function of the anti-roll bar is to achieve the balance of the control and limit the body roll when cornering to improve the ground contact of the tire. When cornering, the suspension of the inner wheel is elongated and the suspension of the outer wheel is compressed. At this time, the anti-roll bar will produce torsion restraint. It will exert a downward pressing force on the suspension of the outer curved wheel, and a lifting force on the suspension of the inner curved wheel. If the anti-roll bar is too soft, it will cause too much camber when cornering and reduce the ground contact area of the tire. If it is too hard, the tire will not be able to stick to the ground and affect the handling. For a curved inner wheel, the force exerted by the anti-roll bar on the wheel and the force exerted by the spring on the wheel are in opposite directions. If the anti-roll bar is too stiff, it will reduce the pressure of the wheel back to the ground? If this happens to the driving wheel, it may make the grip of the inner wheel of the corner lessened when the corner is refueled, causing the tire to spin. This is quite dangerous for a car with high horsepower but no LSD. The ideal state is to control the anti-roll resistance provided by the anti-roll bar between 20% and 50% of the total anti-roll resistance. If the total anti-roll resistance is too strong, it may cause the inner wheel to lift off the ground when cornering, which will cause 100% weight transfer, which usually occurs on the non-driving wheel in the corner.