Regenerative pump start and actuation stage for high-speed centrifugal fuel pump
AssigneeEaton Intelligent Power Limited
InventorsCody M. Mackey, Martin A. Clements
Life of this patent
Estimating the term…
Abstract
A fuel pump system (100) and associated method for supplying fuel from an associated fluid source (112) to an associated downstream use (102, 104) including for engine (i) start mode, (ii) run mode, and (iii) actuation mode are disclosed. The system has a pump (110) including a primary stage (116) having an inlet (114), and an outlet (120) that is configured to selectively supply pressurized flow for the (ii) run mode, and a regenerative stage (130) commonly driven with the primary stage to selectively provide pressurized fluid for the (i) start mode and the (iii) actuation mode.
Claims40
A fuel pump system for supplying fuel from an associated fluid source to an associated downstream use(s) including for engine (i) start mode, (ii) run mode, and (iii) actuation mode, the system comprising:
- a pump including a primary stage having an inlet and an outlet that is configured to selectively supply pressurized flow for the (ii) run mode;
- and
- a regenerative stage commonly driven with the primary stage to selectively provide pressurized fluid for the (i) start mode and the (iii) actuation mode.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
A fuel pump system for supplying fuel from an associated fluid source to an associated downstream use(s) including for engine (i) start mode, (ii) run mode, and (iii) actuation mode, the system comprising:
- a pump including a primary stage having an inlet, a centrifugal pump stage having an impeller, and an outlet that is configured to selectively supply pressurized flow for the (ii) run mode;
- and
- a rotary member stage commonly driven with the centrifugal pump to selectively provide pressurized fluid for the (i) start mode and the (iii) actuation mode.
A method of supplying fuel from an associated fluid source to an associated downstream use(s) including for engine (i) start mode, (ii) run mode, and (iii) actuation mode, the method comprising:
- selectively supplying pressurized flow for the (ii) run mode with a pump including a primary stage having an inlet and an outlet that is configured to selectively supply pressurized flow for the (ii) run mode;
- and
- selectively providing pressurized fluid for the (i) start mode and the (iii) actuation mode with a regenerative stage commonly driven with the primary stage.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.