Patent ID: 11879384
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of starting a gas turbine engine, comprising:
monitoring, during startup of the gas turbine engine, a fuel pressure associated with a primary fuel supply of the gas turbine engine, the primary fuel supply being configured to provide fuel from a reservoir to the gas turbine engine;
detecting a low-pressure event for the primary fuel supply when the fuel pressure falls below a predetermined threshold, detecting the low pressure event including:
comparing a plurality of pressure readings to the predetermined threshold; and
detecting the low pressure event when at least two of the plurality of pressure readings are below the predetermined threshold; and

responsive to detecting the low pressure event, activating, by an engine controller, an electric backup boost pump to provide fuel from the reservoir to the gas turbine engine, the electric backup boost pump operating independently of the primary fuel supply and drawing fuel from the reservoir separately of the primary fuel supply,
wherein the plurality of pressure readings are detected along a common fuel conduit.