3.0 R
- Year/Month: 2006/0
- Stock ID: T112422
- Transmission: Automatic
- CC: 3000
- Mileage: 84000
- Fuel Type: Petrol
- 524 Views
By roll is meant the oscillation of a Subaru Outback SE for sale around its longitudinal axis. It is the situation that occurs when, driving along a curve, one side of the car tends to lower towards the ground, while the opposite one tends to rise. In practice, there is a load transfer to the outer wheels with respect to the curve.
Interaction Between The Suspension
The behavior of the vehicle, in fact, is linked to the interaction between the suspension groups, on which different body movements depend. When the vehicle travels along a curve, the suspended masses tend to move in the opposite direction compared to that of the center of the curve, due to the centrifugal force. It should be noted, however, that the latter is an apparent force (not applied directly), in fact, a curvilinear motion actually has the centripetal force (towards the center of the curve), which in the case of a car curve is given by the friction force between the tires and the asphalt. Among the factors that influence the intensity of the roll there are the acceleration in the curve, the mass of the car (the greater the mass, the greater the roll will be), the width of the carriageways (the roll will be the smaller the greater the distance between the two wheels of the same axis) and the height of the center of gravity; the greater the distance between the center of gravity (the point at which gravity can be considered concentrated) and the roll center (the point around which the car moves laterally or transversely), the greater the roll will be and therefore also the risk of overturning.
Exposed To Overturn
Cars with a high center of gravity, such as off-road vehicles and SUVs, are in fact the vehicles exposed to overturning. Among the interventions to reduce the roll intensity is the installation of the anti-roll bars, special elements that connect the suspensions of the same axis in order to contain the load transfers. In any case, a correct driving style (entry speed, steering maneuvers, acceleration at the exit) and adapted to the characteristics of the vehicle, is essential to limit the roll and keep the vehicle in balance. Torsion bars are special springs that work by twisting. In suspensions, with torsion bars, the oscillations of the wheels determine the twisting of special rectilinear steel bars with a circular section. Once the cause of the deformation has ceased, the bars tend to return to the rest position due to the elasticity of the material of which they are made. Please note, the Subaru outback se price can be set or reset on the basis of discussed notion here.
A Constant Section
In practice, when a straight-line bar with a constant section, stuck with one end in a fixed support, it is stressed at the free end by means of a torque, the extreme free section rotates with respect to the embedded section of an angle which depends on the modulus of elasticity of the material to the tangential stresses, from the length of the bar, from the shape and size of the section. The torsion bar couplings with fixed support to the frame and with the crank, connected to the suspension in such a way that the vertical movement of the wheel causes a deformation of the bar, they should be capable to transmit strong torques and made in such a way that the forces transmitted to them are as uniformly distributed as possible on its periphery. Therefore, grooved or toothed couplings will be adopted. In order for the bar to not be weakened, the ends become enlarged a diameter greater than that of its cylindrical part active and connected with conical portions, etc.