| 摘要 |
Variable-flow pump comprising at least one piston 1 associated with a chamber 2, the said piston 1 interacting with a surface 3 driven in a constant-displacement reciprocating movement, characterised in that the piston 1 is free of any continuous mechanical link with the said surface 3; and in that the said chamber 2 is combined with a system for adjusting the flow rate 9 arranged upstream, and in that it is equipped with a valve 7 on the supply and a valve 8 on the delivery; the said adjustment system 9 being supplied by a booster pump 10. <IMAGE>
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