| 摘要 |
A self-pumping suspension strut with internal level regulation, for example for motor vehicles having a fluid-filled working cylinder pressurized with the pressure of the fluid acting as a spring. A hollow piston rod is guided, in a sealed manner, within the working space, into which projects a pump piston attached to the working cylinder. During relative movements between the working cylinder and the piston rod, fluid is delivered from the working space into a pressure chamber in which a pressure is higher than the pressure of the working space. Flow connections between the pressure chamber and the working space selective set a specifiable dynamic level, determined by the extension length of the piston rod, such that the piston rod can be rotated, by a rotating device, for selective cooperation of the axially and the circumferentially spaced flow connections to control flow. |
| 主权项 |
1. A self-pumping suspension strut with internal level regulation, the suspension strut comprising:
a fluid-filled working cylinder (19) being pressurized with a pressure of fluid acting as a spring; the fluid-filled working cylinder (19) having a working space (3, 31) in which a hollow piston rod (1) being guided in a sealed manner; a pump piston (4, 6), attached to the working cylinder (19), projecting into the hollow piston rod (1) so that, during relative movement between the working cylinder (19) and the piston rod (1), delivering fluid from the working space (3, 31) into a pressure chamber (13) having a pressure higher than a pressure of the working space (3, 31), the self-pumping suspension strut comprising axially and circumferentially spaced flow connections (5, 17, 18, 32), between the pressure chamber (13) and the working space (3, 31), for the selective setting of a specifiable dynamic level determined by an extension length of the piston rod (1); and the piston rod (1) being rotated, by a rotation device (33), for selective cooperation of the flow connections (5, 17, 18, 32). |
