Basic Process Knowledge (Multiple Choice) 20180205
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After grooves for unloading are created on the end cover of the gear pump, if the impact on leakage is minimal, the pump flow rate should remain unchanged. A. Slight increase B. Slight decrease C. Remain unchanged D. Pulsating increase Hint: When the unloading groove is opened, the confined oil between the two pairs of meshing teeth can be forced from the unloading groove into the discharge chamber; if it is not opened, more oil will be forced out into the suction chamber.
After grooves for unloading are created on the end cover of the gear pump, if the impact on leakage is minimal, the pump flow rate should remain unchanged. A. Slight increase B. Slight decrease C. Remain unchanged D. Pulsating increase