Piston-cylinder assembly i.e. single-tube shock absorber, has valve needle that is rotatable in certain position, so that it faces recess and flow-through channels in defined region and controls fluid flow through working cylinder

摘要

The assembly (1) has a working cylinder (2) filled with pressurized fluid, and a hollow piston rod (3), which is coaxial to the cylinder, sliding inside the cylinder. A piston (4) that is attached at the rod divides the cylinder into two working chambers (15, 16). A valve needle (6) that is arranged in the rod comprises a recess at its end. A casing that is arranged in the rod comprises flow-through channels running in an axial direction. The needle is rotatable in a certain position, so that it faces the recess and the channels in a defined region and controls the fluid flow.