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发明公开
CN1991175A 可变活塞式叶轮泵 无效 - 撤回

可变活塞式叶轮泵
摘要：
一种可变活塞式叶轮泵，包括：泵体；驱动轴；转子；可围绕摆动支点摆动的凸轮环；在凸轮环的相对的轴向侧的第一和第二支承构件；配置在支承构件的至少一个上的吸入口和排出口；密封件，该密封件将凸轮环的外周侧的空间划分成第一流体压力室和第二流体压力室，所述第一流体压力室被限定在这样一个方向上，当凸轮环在该方向上摆动时，导致被排出的工作流体的流量增大，所述第二流体压力室被限定在这样一个方向上：当凸轮环在该方向上摆动时，导致被排出的工作流体的流量的减小；以及柱塞，该柱塞将凸轮环从第二流体压力室侧向第一流体压力室侧加载。
摘要（英）：

A variable displacement vane pump, including a pump body, a driving shaft, a rotor, a cam ring swingable around a swing fulcrum, first and second support members on opposite axial sides of the cam ring, a suction port and a discharge port disposed on at least one of the support members, a seal dividing a space on an outer circumferential side of the cam ring into a first fluid pressure chamber defined in a direction in which the cam ring is swung to cause increase in a flow rate of a working fluid discharged, and a second fluid pressure chamber defined in a direction in which the cam ring is swung to cause decrease in the flow rate of the working fluid discharged, and a plunger biasing the cam ring from a side of the second fluid pressure chamber toward a side of the first fluid pressure chamber.

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