Drive systems and chassis | Chassis · 55
Shedding weight.
Adding agility, economy and comfort.
Chassis.
Weight reduction.
The axle concept on the Cayenne models
features consistent lightweight construc-
tion. The results: enhanced driving
dynamics, lower fuel consumption and
optimum occupant comfort.
Front axle.
The chassis on the Cayenne models
offers a direct response – for a more
rewarding driving experience. The wish-
bones on the subframe-mounted front
suspension with high-mounted upper
arms are in aluminium. This axle design
ensures accurate wheel location, greater
agility and minimal interference on
uneven surfaces. The subframe is
secured on large rubber mountings that
reduce road noise to a minimum.
It is also specially constructed to
increase stability. For enhanced comfort
and even greater active and passive
safety. In the event of an impact, the sub-
frame deforms in a predefined manner.
Rear axle.
The rear axle features multi-link suspen-
sion. Ideal for performance road and
track use, it also copes well with the
extremely high towing and carrying loads
that are possible with each Cayenne.
The suspension struts are angled to
allow longer suspension travel and create
a deeper and wider cargo area. As well
as providing additional space, the car is
also easier to load.
The rear axle design minimises dive and
squat under acceleration and braking.
It also improves mid-corner stability and
compensates for sudden load transfer.
In short: it enables a more relaxed
way of driving. Examples of intelligent
lightweight construction on the rear axle
include hollow drive shafts.
Steering.
The steering system has been com-
pletely revised and adapted for a more
immediate response and greater driving
dynamics. Around the straight-ahead pos-
ition, in particular, the ratio is now more
direct. With the variable steering ratio
and special valve settings on the power-
steering system, optimum manoeuvrabil-
ity is ensured. The turning circle of the
Cayenne models is just 11.9 metres.
The steering column itself consists of
multiple collapsing sections linked by two
universal joints and a special deformation
element provides additional safety in the
event of a front impact.
Electro-hydraulic power steering is
used for the first time on the Cayenne S
Hybrid. The demand-driven pump only
provides assistance to the steering as
and when required, thereby contributing
to overall efficiency.
Power steering Plus.
Power steering Plus is a speed-sensitive
power-steering system.
At higher speeds, the steering becomes
firmer, inputs are more precise and
driver comfort is enhanced. At lower
speeds, it enables easy manoeuvrability
and parking.
Standard on the Cayenne S Hybrid.
Optional for all other Cayenne models.
For fuel consumption, CO
2
emissions and efficiency class data, please refer to pages 150/151.
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