15
DeÞnitions:
The
un-laden position
...
... is the compression exerted onto the wheels
when the vehicle is ready for the road (fuel
tank completely Þlled, spare wheel and
vehicle tools present).
The
design position
...
... is deÞned as the un-laden position plus the
additional load of three persons, each
weighing 68 kg.
The static compression
...
... is the starting point (zero) for the dynamic
spring movements, compression travel (plus)
and rebound travel (minus).
... is dependant upon the spring rate and the
load (sprung masses).
... results from the difference between the
static compression when un-laden
s
stat(un-laden)
and the static compression when
fully laden s
stat(fully laden)
.
s
stat
= s
stat(fully laden)
- s
stat(un-laden)
In the case of a ßat characteristic curve (soft
springs), the difference and thereby the static
compression between full and un-laden is
very great.
242_076
In the case of a steep characteristic spring
curve, this state of affairs is reversed and is
coupled with an excessive increase of the
natural frequency of the bodywork.
Fully laden
Un-laden position
Hard springs
Soft springs
s
stat
soft springs
s
stat
hard springs
