| 摘要 |
<p>The rotor of a radial piston pump, or motor, rotates on a stationary cylindrical control body, and has chamber ports communicating with expanding and contracting working chambers, and opening on the cylindrical inner rotor surface so as to move over high pressure and low pressure control ports on the outer cylindrical control body surface. Pairs of grooves are provided on the control body surface on opposite sides of the control ports to collect leakage fuid, and the pressure in the grooves is equalized by ducts connecting pairs of grooves.</p> |
