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KW valve technology


For each vehicle class and for every operational use, KW offers the optimal adjusted suspension, from comfortable, to sporty or performance-oriented.
This demanding objective can only be achieved with the innovative, patented KW technology with an individually adjustable rebound- and compression damping. For this reason, we base our damping developments on twin-tube technology.

With our 2-way pressure valve technology two, basically incompatible characteristics – dynamics & driving comfort – can be uniquely combined.

Our Variant 3 allows adjusting the rebound damping forces completely separately from the compression adjustment. This allows optimal amount of traction to the road if so required.

The determining factor for the overall adjustment is the fact that the compression- and rebound forces have no relation to each other – in other words: an alteration of the compression damping does not necessarily also involve an alteration of the rebound damping.


KW technology in detail


Rebound adjustment included in the piston rod for protection of the valve technology
Piston rod steering- and sealing kit
Valve technology traction stage
Valve technology compression stage

Piston rod steering- and sealing kit

Our modular sealing system surpasses the usual OEM standards.
It can be easily opened due to its aluminium bolting and therefore allows a later, custom-made adjustment of the valve technology or the deviation ratio.

Bolting made of high-strength aluminium
Self-greasing NBR seal
Clamp-/sliding sleeve
O-ring made of temperature-resistant viton
Guide bushing with ventilation holes
Especially coated DU sliding bushing
Rebound pods
Valve technology traction stage

Oil flow during closed traction stage

  • Bypass duct in the traction stage adjustment is closed
  • Declining increase of the characteristic line and the maximally possible traction damping is achieved
  • The damping is carried out by the setup-specific preset spring valve at the piston.


Result:

A sporty and tense adjustment of the traction stage prevents rolling and pitching while braking and accelerating.




Oil flow during open traction stage

  • Bypass duct in the traction stage adjustment is open
  • Progressive increase of the characteristic line and the minimally possible traction damping is achieved
  • The bypass oil amount (black arrow) is not available anymore for the spring valve at the piston and the damping forces are therefore reduced.

Result:
A lower rebound damping improves the driving comfort.

Valve technology compression stage

Oil flow during closed compression stage in the base valve

Spring- loaded bypass valve of the compression damping in a closed state before the compression stage is activated.








Position of the bypass valve with increasing piston rod velocity

  • During slow piston rod velocity (black arrows), the oil flows over the bypass valve
  • the maximum compression damping (white arrows) is carried out via the spring-loaded piston valve
  • the closed compression stage creates a progressive characteristic line of compression damping



Result:
A sporty and tense adjustment of the compression stage prevents the vehicle from rolling in curves.



Oil flow during opened compression stage in the base valve

Spring-loaded bypass valve of the compression damping in an opened state before the compression stage is activated








Position of the bypass valve with increasing piston rod velocity

  • During slow piston rod velocities (black arrows), the oil flows over the bypass valve
  • The maximum compression damping (white arrows) is carried out by the spring-loaded piston valve
  • By the opened bypass valve, a declining characteristic line of the compression damping in the low-speed range is achieved


Result:
The (safety-relevant) support of the vehicle in the high-speed range of the damping is not influenced during an opened or closed compression stage and is therefore always ensured