| 摘要 |
A motor vehicle air spring has an air volume subdivided into an air spring volume and an ancillary volume. The two volumes (4, 6) are connected to each other by a line (8) having a cross section which can be switched or continuously adjusted by a valve (12). The valve (12) has two roll membranes (56, 58) which are arranged in mutual opposition. The intermediate space (60) between the roll membranes (56, 58) preferably communicates with the atmosphere. The two mutually opposingly mounted roll membranes (56, 58) can be joined to form a single double roll membrane (76). Preferably, the valve body (34) as well as the bore (62) of the valve housing (36) is configured so as to be cylindrical so that the constant effective diameter (Dw) of the roll membranes (56, 58) results which is independent of the deflection of the valve body (34). The valve (12) is applicable to all areas where a large cross section has to be completely cleared with small switching times and forces and where only little switching energy is available.
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