16
System components
Solenoid valve block
The solenoid valve block contains the pres-
sure sender and the valves for actuating the
pneumatic springs and the accumulator. It is
installed in the wheel housing between the
wheel housing liner and the left-hand
A-pillar.
Solenoid valves
Construction/function:
The construction and function of the solenoid
valves are largely the same as in the allroad
quattro (see SSP 243).
Accumulator
The accumulator is situated between the
floor of the boot and the rear silencer on the
left-hand side of the vehicle.
Construction:
The accumulator is made of aluminium.
It has a volume of 5.8l and a max. operating
pressure of 16 bar.
Function:
The objective in designing this system was to
reliably satisfy functional requirements
whilst keeping energy consumption to a min-
imum (so that the compressor is on as little
as possible). In order to enable controlled
pressure build-up to be effected solely with
the accumulator, there must be a minimum
difference in pressure of 3 bar between the
accumulator and the pneumatic springs.
Rear right
292_018
Accumulator
Front left
Pressure connection
for compressor
Front right Rear left
292_019
