| 摘要 |
A fluid device includes a displacement assembly and a balance plate assembly disposed adjacent to the displacement assembly. The displacement assembly includes a ring and a rotor disposed in a bore of the ring. The ring and rotor cooperatively define a plurality of volume chambers. The balance plate assembly includes a housing that defines a cavity. A balance plate is disposed in the cavity. The balance plate includes a first end surface and an oppositely disposed second end surface. The balance plate is adapted to move axially between a first position in which the second end surface of balance plate abuts a first end face of the ring to a second position in which the second surface of the balance plate is recessed in the cavity.
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