Variable displacement fuel pump with position sensor
OwnerWeishun Willaim Ni, Edward W. Goy +3inventors
InventorsWeishun Willaim Ni, Edward W. Goy, David Lauriat, Dennis L. Kaderabek, Dennis A. Erickson
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Abstract
A variable displacement fuel pump includes a pump body, a barrel disposed within the pump body, at least one piston disposed in the barrel, wherein the at least one piston is configured to reciprocate within the barrel, a hydraulic actuator operatively coupled to the barrel, wherein the hydraulic actuator rotates the barrel to a selected barrel angle relative to the at least one piston, and a position sensor operatively coupled to the hydraulic actuator to provide an actuator position parameter.
Claims18
A variable displacement fuel pump, comprising:
- a pump body;
- a barrel disposed within the pump body;
- at least one piston disposed in the barrel, wherein the at least one piston is configured to reciprocate within the barrel;
- a hydraulic actuator operatively coupled to the barrel, wherein the hydraulic actuator rotates the barrel to a selected barrel angle relative to the at least one piston;
- and
- a position sensor operatively coupled to the hydraulic actuator to provide an actuator position parameter.
A fuel system, comprising:
- a fuel source;
- a variable displacement fuel pump, including:
- a pump body;
- a barrel disposed within the pump body;
- at least one piston disposed in the barrel, wherein the at least one piston is configured to reciprocate within the barrel to provide a fuel flow;
- a hydraulic actuator operatively coupled to the barrel, wherein the hydraulic actuator rotates the barrel to a selected barrel angle relative to the at least one piston;
- and
- a position sensor operatively coupled to the hydraulic actuator to provide an actuator position parameter;
- a controller to receive a thrust demand parameter and the actuator position parameter to provide a hydraulic pressure to the hydraulic actuator corresponding to a fuel flow;
- and
- a thrust output device to receive the fuel flow to provide a thrust output corresponding to the thrust demand parameter.
A method to provide a desired thrust output corresponding to a thrust demand parameter, the method comprising:
- providing an actuator position parameter of a hydraulic actuator to the controller via a position sensor;
- receiving the thrust demand parameter and the actuator position parameter via a controller;
- providing a hydraulic pressure via the controller;
- providing a fuel flow via a variable displacement fuel pump, including:
- a pump body;
- a barrel disposed within the pump body;
- and
- at least one piston disposed in the barrel, wherein the at least one piston is configured to reciprocate within the barrel to provide the fuel flow;
- and
- rotating the barrel of the variable displacement fuel pump to a selected barrel angle relative to the at least one piston in response to the desired fuel flow parameter via the hydraulic pressure applied to a hydraulic actuator.
Dependencies are inferred from the claim text.