| 摘要 |
The valve supplies hydraulic pressure to a servo element. It consists of input and delivery shafts, centering spring, and valve element. At least one coaxial chamber (16) is formed directly or indirectly on one of the shafts. The chamber is filled with a pressure medium. It contains a piston element (18), which is directly or indirectly connected to the other shaft, and moves on a mainly circular track. The chamber may be ring-shaped, and divided into several sections. The piston is formed as a radial web on a ring. Both chamber and ring may be formed on ring elements, which may be fitted into each other. |
