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4-level air suspension
The introduction of the Audi A8 ´03 is
accompanied by a system featuring new
technical details and functions. The major
differences with respect to the familiar Audi
allroad quattro
® system are as follows:
EDC instead of PDC damping
The control system makes allowance for the
currently applicable driving status. Wheel
movement (unsprung masses) and body
movement (sprung masses) are detected.
Various damping characteristic curves are
implemented within the scope of three
selectable programs (modes) and each
damper can be controlled individually.
Control concept
Integration into the MMI makes for
convenient, logical and easy to remember
control action.
Extended range of sensors
Use is made of three acceleration sensors to
detect body movement.
External air springs
The air spring not only replaces the steel
spring, it also offers major advantages (refer
to SSP 242). The new external routing of the
air spring through an aluminium cylinder
permits the use of thinner-walled bellows.
This results in an even more sensitive
response to road surface irregularities.
SSP282_052
SSP282_053
Optimal comfort and road safety are thus
always guaranteed whichever mode is set
(comfort or sports).
The term "mode" thus describes a
coordinated combination of adaptive
suspension program and damping map.
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Media Oriented Systems Transport
R
The name of this data bus system is derived
from "Media Oriented Systems Transport
(MOST) Cooperation". This is an association
formed by various motor vehicle
manufacturers, their suppliers and software
companies with a view to developing
a standard high-speed data transfer system. MOST bus
The term "Media Oriented Systems Transport"
signifies a network featuring media-oriented
data transport. This means that, in contrast to
the CAN data bus, address-oriented
messages are transmitted to a specific
receiver.
This technique is used in Audi vehicles for the
transfer of infotainment system data.
The infotainment system offers a wide range
of modern information and entertainment
media. In addition to the familiar CAN bus
systems, use has been made for the first time
in the Audi A8 ´03 of an optical data bus
system.
SSP282_034
Design and operation of the MOST bus
are described in SSP 286 – New data bus
systems.
System manager
Sound system
DisplayOperating unit
