US 2025/0020185 A1Published application

Vibration damper and motor vehicle with an active chassis

AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft

InventorsNils Häussermann, Swen Zschocke

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Abstract

A vibration damper having a damper piston, which can be moved back and forth in a main pipe in an axial direction. The main pipe is arranged in a container pipe. An intermediate pipe is arranged between the main pipe and the container pipe. The pipes are arranged coaxially in a three-pipe damper. The damper piston is attached to an end of a piston rod. The three-pipe damper is equipped with a hydraulic end position damper and, at its end facing away from the piston rod, has a central valve block with two damper valve devices. The central valve block is partially surrounded by an air spring including an air spring housing that surrounds the central valve block. The three-pipe damper has a gas balance volume at its piston rod end and is arranged in an annular space between the intermediate pipe and the container pipe.

Claims9

Dependent claims

A vibration damper comprising:

a container pipe;
a main pipe arranged in the container pipe;
an intermediate pipe arranged between the main pipe and the container pipe, wherein the main pipe, the intermediate pipe and the container pipe are arranged coaxially and together constitute a three-pipe damper;
a damper piston that is configured to move back and forth in the main pipe in an axial direction relative to the main pipe;
a piston rod having an end that is attached to the damper piston;
a hydraulic end position damper;
a central valve block with two damping valve devices that are disposed at an end of the three-pipe damper that faces away from the piston rod;
an air spring partially surrounding the central valve block, wherein the air spring comprises an air spring housing;
and
a gas balance volume arranged in an annular space between the intermediate pipe and the container pipe.

7 more elements

Dependencies are inferred from the claim text.