Patent ID: 11913437
Assignee: QUANTUM SERVO PUMPING TECHNOLOGIES PTY LTD
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. The method of claim 5 wherein:
in the first mode of operation the four sub-systems are in phase with respect to each other;
the method comprises operating the pumping arrangement in an intermediate mode of operation in which:
a first adjacent two of the four sub-systems are substantially in phase with respect to each other; and
a last adjacent two of the four sub-systems are substantially in phase with respect to each other and substantially in antiphase with respect the first adjacent two of the four sub-systems to deliver the fluid at higher pressure and lower flow than the pumping arrangement delivers in the first mode of operation; and

in the second mode of operation, the sub-systems of each adjacent two of the four sub-systems are substantially in antiphase with respect to each other to deliver the fluid at higher pressure and lower flow than the pumping arrangement delivers in the intermediate mode of operation.