Multi-chamber air spring, method for operating the multi-chamber air spring
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorsRichard Legierski, Micha David Imhof
Life of this patent
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Abstract
A multi-chamber air spring includes a main volume, an additional volume and a switching valve. The switching valve is designed to connect the additional volume to the main volume in a first operating state of the multi-chamber air spring, and to disconnect the additional volume from the main volume in a second operating state of the multi-chamber air spring. The switching valve is designed to open in the second operating state from a first predetermined limit pressure difference between the additional volume and the main volume.
Claims6
A multi-chamber air spring comprising:
- a main volume;
- an additional volume;
- and
- a switching valve that is configured (i) to connect the additional volume to the main volume in a first operating state of the multi-chamber air spring, and (ii) to disconnect the additional volume from the main volume in a second operating state of the multi-chamber air spring,
- wherein the switching valve is configured to open in the second operating state at a first predetermined limit pressure difference between the additional volume and the main volume.
A method for operating a multi-chamber air spring comprising (i) a main volume, (ii) an additional volume, and (iii) a switching valve that is configured (a) to connect the additional volume to the main volume in a first operating state of the multi-chamber air spring, and (b) to disconnect the additional volume from the main volume in a second operating state of the multi-chamber air spring, said method comprising:
- opening the switching valve in the second operating state at a first predetermined limit pressure difference between the additional volume and the main volume, and/or
- closing the switching valve at a second predetermined limit pressure difference between the additional volume and the main volume, which is smaller than the first limit pressure difference.
Dependencies are inferred from the claim text.