| 摘要 |
A fuel pumping apparatus includes a rotary distributor member mounting pumping plungers. The apparatus includes a chamber to which liquid can be supplied to vary an operating characteristic of the apparatus. A flow passage is provided through which liquid can flow to the chamber and a valve constituted by a port and grooves is provided so that liquid can be supplied to the space at specific times only during the rotation of the distributor member. An on/off valve is provided to control the flow of liquid through the flow passage.
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