13
-120 -80-400
0
3
6
9
12
15
40 80 120
(Example: Suspension strut with auxiliary
polyurethane springs).
Advantages of progressive characteristic
curve of spring:
• Better matching of the suspension system
from normal to full load.
• The natural frequency of the bodywork
remains practically constant during
loading.
• The suspension is not so prone to impacts
in the case of significant irregularities in
the road surface.
• Better use of the available spring travel.
Rebound in mm Compression in mm
Parallel springing
Lower stop
Upper stop
Rebound stop insert (in shock absorber)
Un-laden position
Design position
Auxiliary spring insert
Lower stop
242_020
Spring
Auxiliary spring
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