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US 11,028,726 B2Granted
Starter air valve systems configured for low speed motoring
AssigneeHamilton Sundstrand Corporation
InventorsBoris N. Grigorov, Tyler J. Selstad, Leo J. Veilleux, Jr.
Life of this patent
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Abstract
A starter air valve (SAV) system can include a pressure actuated SAV actuator configured to be operatively connected to a SAV and a first pressure valve configured to selectively allow pressure from a pressure source to the SAV actuator when in fluid communication with the SAV actuator. The first pressure valve can be a pulse-width modulation solenoid valve configured to provide a duty cycle of pressure from the pressure source to the SAV actuator.
Claims8
A starter air valve (SAV) system comprising:
- a pressure actuated SAV actuator configured to be operatively connected to a SAV;
- a first pressure valve configured to selectively allow pressure from a pressure source to the SAV actuator when in fluid communication with the SAV actuator, wherein the first pressure valve is a pulse-width modulation solenoid valve configured to provide a duty cycle of pressure from the pressure source to the SAV actuator;
- a first controller in operable communication with at least the first pressure valve and configured to control the first pressure valve;
- a second pressure valve configured to selectively allow pressure from the pressure source to the SAV actuator when in fluid communication with the SAV actuator;
- a second controller in operable communication with at least the second pressure valve and configured to control the second pressure valve;
- and
- a manual override (MOR) valve selector disposed between the first pressure valve, the second pressure valve, and the SAV actuator, the MOR valve selector configured to selectively fluidly connect the first pressure valve and the SAV actuator in a first position and to fluidly connect the second pressure valve and the SAV actuator in a second position.
4 more elements
A starter air valve (SAV) system comprising:
- a pressure actuated SAV actuator configured to be operatively connected to a SAV;
- a first pressure valve configured to selectively allow pressure from a pressure source to the SAV actuator when in fluid communication with the SAV actuator;
- a second pressure valve configured to selectively allow pressure from the pressure source to the SAV actuator when in fluid communication with the SAV actuator;
- and
- a manual override (MOR) valve selector disposed between the first pressure valve, the second pressure valve, and the SAV actuator, the MOR valve selector configured to selectively fluidly connect the first pressure valve and the SAV actuator in a first position and to fluidly connect the second pressure valve and the SAV actuator in a second position.
2 more elements
Dependencies are inferred from the claim text.