AUDI R8
The Audi R8 model is using the latest technology system of suspension,adaptive air suspension which are very comfortable to driver.Adaptive air suspension is an electronically-controlled suspension system that acts on all four wheels of a vehicle. Adaptive air suspension adjusts the shock absorber, depending on the road conditions and the car’s speed, for precise handling and a high level of ride comfort. It also enables the speed-dependent lowering of the body, resulting in a lower center of gravity and improved vehicle aerodynamics and directional stability. This technology is available, for example, as an option in the Audi A8. An equipped vehicle has air suspension struts on all four wheels. The data from sensors on the axles and acceleration sensors on the body is evaluated in the adaptive air suspension's central control unit. This computer controls the adjustment of the individual shock absorbers in milliseconds depending on the driving situation. Controlled changes to the damping force at individual wheels help eliminate body movements at any time which could reduce occupant comfort. The adaptive damping system automatically reduces rolling or pitching movements when cornering, braking, or driving off. Adaptive air suspension, moreover, offers the advantages of a traditional self-leveling suspension system. The vehicle's suspension height remains constant irrespective of the load it is carrying.
Audi adaptive air suspension successfully unites the apparently conflicting qualities of comfort and dynamic handling. With its combination of air suspension and a continuously variable, electronically controlled damper system, it adapts to every driving situation no matter how the vehicle is loaded.
The electromagnetic coil is integrated into the damper piston in such a way that when it is energized the magnetic flux runs exactly transversely to the admission ports in the damper piston. As the piston moves, the aligned iron particles cling together and create flow resistance in the flowing suspension fluid. The greater the energy applied and the stronger the magnetic field, the greater the attractive force between the iron particles, thereby creating greater resistance and damping power.
The energy is controlled in relation to driving dynamics and impulses from the road. This means for every road situation optimal damping power is available. This damping power produces - according to OEM desire - a more comfortable feel or sportier vehicle handling. The control of these dampers is done by an electronic controller that communicates with the vehicle's sensors and other chassis controllers in order to determine the prevailing driving situation in a matter of milliseconds. Because damper valving is eliminated by using magneto-rheological controlled fluid within the damper, the technology has a very short response time.
The damping force is only dependent on the power applied to the magneto-rheological fluid and can be adjusted up to 1,000 times a second. Audi uses the magneto-rheological dampers for both comfort and sport. In its basic mode, the suspension allows for a more comfortable vehicle feel. In sport mode, the vehicle offers a more responsive ride thanks to a push of a button.
AUDI A6
The Audi dynamic suspension in the new A6 uses a technology which has already proven its sporting qualities under the most demanding and challenging conditions: the enhanced, Audi-designed four-link front suspension in combination with the self-tracking trapezoidal-link rear axle adopted from the Audi A8 – a combination featured both on the front-wheel-drive and quattro versions. The main components are made of lightweight aluminium serving to reduce unsprung masses.
Not only has wheelbase been increased significantly (by 83 millimetres) compared with the previous model, the track of the car is also up at the front by 67 to 1612 millimetres and has been increased at the rear by 49 to 1618 millimetres – dimensions which set a new benchmark in this class. Weight distribution has also been optimised between the front and rear axles in the interest of even better handling and performance. On the road this means dynamic driving behaviour of the highest calibre, leaving the competition far behind. Indeed, these features place the new A6 side-by-side with the A8 lauded so positively by the press. For like the A8, the A6 clearly stands out as the sportiest car its class, also thanks to speed-dependent servotronic power assistance featured as standard and supplementing the precise handling of the new A6 by an even more precise and sensitive feedback to the steering.
Not only has wheelbase been increased significantly (by 83 millimetres) compared with the previous model, the track of the car is also up at the front by 67 to 1612 millimetres and has been increased at the rear by 49 to 1618 millimetres – dimensions which set a new benchmark in this class. Weight distribution has also been optimised between the front and rear axles in the interest of even better handling and performance. On the road this means dynamic driving behaviour of the highest calibre, leaving the competition far behind. Indeed, these features place the new A6 side-by-side with the A8 lauded so positively by the press. For like the A8, the A6 clearly stands out as the sportiest car its class, also thanks to speed-dependent servotronic power assistance featured as standard and supplementing the precise handling of the new A6 by an even more precise and sensitive feedback to the steering.
In relation to the passenger cell, the four-link front suspension of the new A6 has been moved forward by 83 millimetres compared with the previous model, thus ensuring far better axle load distribution with corresponding advantages in terms of driving dynamics. This change in proportions also looks good, making the front overhang far shorter and thus giving the entire car a much more compact appearance.
Weight-optimised components help to reduce unsprung masses to a minimum: four aluminium track control arms in optimised design hold the wheels steadily in place, the axle subframe is configured as a shell panel structure, and the upper bearing block is made of cast aluminium. Lightweight technology is also used on the tube encompassing the anti-roll bar.
A further point is the re-alignment of the car's kinematics and elastokinematics serving to maximise both driving dynamics and motoring comfort. Particularly transverse stiffness benefits from the careful improvement of all track control mounts and bearings, extra-large rubber bushes within the axle subframe efficiently keeping any effects of the road out of the car's interior
Weight-optimised components help to reduce unsprung masses to a minimum: four aluminium track control arms in optimised design hold the wheels steadily in place, the axle subframe is configured as a shell panel structure, and the upper bearing block is made of cast aluminium. Lightweight technology is also used on the tube encompassing the anti-roll bar.
A further point is the re-alignment of the car's kinematics and elastokinematics serving to maximise both driving dynamics and motoring comfort. Particularly transverse stiffness benefits from the careful improvement of all track control mounts and bearings, extra-large rubber bushes within the axle subframe efficiently keeping any effects of the road out of the car's interior
AUDI Q7
The dynamic suspension of the Audi Q7 uses sports technologies such as double wishbone suspension all round. At the same time, long spring travel, a ground clearance of 205 millimetres and robust components take into account the demands of off-road driving. In respect of dynamism, the driving performance of the Audi Q7 bears any comparison; and in terms of driving safety, it also sets the benchmark – on the road and on rough terrain. In addition to the standard steel chassis, adaptive air suspension is available.The Audi Q7 is a classic illustration of Audi’s claim to offer optimum technical solutions in every model. As a performance SUV it harmoniously combines excellent driving comfort with a level of dynamism that is quite new for this category of vehicle. Even the slightly tail-heavy axle load distribution of 40 : 60 per cent between front and rear is a clear sign of its agile nature.
Audi supplies the Q7 with a conventional steel-spring suspension and hydraulic twin-tube shock absorbers as standard. Ground clearance here is around 205 millimetres to ensure good off-road handling. Spring travel is correspondingly long and comfortable. The long wheelbase of 3,002 millimetres guarantees straight-line stability at high speeds.
To enhance ride comfort and driving dynamics, the double wishbones at the front of the Audi Q7 are made of aluminium. The upper triangular wishbone is a cast part, the lower is forged. The large gap between both wishbones guarantees precise wheel control. The mounting for the spring strut and upper wishbone is also made of aluminium.
The lower wishbone and anti-roll bar, made of high-strength steel tubing, are attached to a subframe of high-strength steel, on which the steering is mounted. The mounts are hydraulically damped – this minimises rolling noise and improves comfort even more.
AUDI A3
The A3 Sport trim level features sports suspension to give a firmer ride for enhanced sport driving characteristics.Based on an aluminium subframe, McPherson strut suspension at the front and innovative four-link suspension at the rear, the A3 sports suspension is 15mm lower than the standard suspension. The sports suspension can be further enhanced with Audi Magnetic Ride.On the Audi A3 S line, the suspension is lowered by a further 10mm for an even sportier stance.
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