| 摘要 |
<p>A vane pump comprises a stator (1) formed with an arc-shaped suction port (5) and an arc-shaped discharge port (7), a rotor (2) accommodated in the stator (1), a plurality of vane slots formed in the rotor (2), and a plurality of vanes (3) performing reciprocating movement in the vane slots A fuel gallery (6) formed in the rotor (2) is in fluid communication with the arc-shaped discharge port (7) an each of the vane slots for applying a fuel discharge pressure on an inner end surface of the vane to create a pressure difference between inner and outer end surfaces of the vane The arc-shaped suction port (5) has an upstream end formed at an angular position that is 90° plus a lagging angle from 0° angular position having zero gap in the rotating direction of the rotor The vane pump has an excellent functional property, a simple structure, a low manufacture cost, and a high operational stability.</p> |
