Oil Pump

摘要

An oil pump in which pulsation vibration due to the dynamic pressure on the discharge port side can be attenuated. An oil pump for transporting fluid from a suction port (3) to a discharge port (4) by the rotation of a rotor mounted in a pump casing (1), wherein a resonator (6) configured from an introduction path (61) and a chamber (62) is formed with respect to a discharge flow channel (5) that communicates with the discharge port (4) in the flow direction of the discharge flow channel (5). A channel (7) in a direction different to the flow direction of the discharge flow channel (5) is communicatingly formed in the vicinity of the resonator (6).