| 摘要 |
The invention relates to a hydraulically acting vibration damper with an adjustable damping force for vehicles. The damper comprises a cylinder filled with damping fluid, the interior of which is divided into two working chambers by a piston connected to a piston rod and has adjustable piston damping. For this purpose, there is, in addition to the customary piston damping valves, a bypass passage, the cross-section of which can be varied in a controlled manner. In order to obtain a change in the damping force which is effective over the entire speed range, the bypass passage has a bypass-damping valve connected in series with it, which can be operated by the pressure difference between the working chambers.
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