Patent ID: 11858326
Assignee: GENERAL ATOMICS AERONAUTICAL SYSTEMS, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 18:
19. A method for isolating fuel from a vehicle firebay, the method comprising:
turning off a fuel pump to stop pumping the fuel through a fuel feed line passing through a firewall to an engine within the vehicle firebay, wherein firewall separates the vehicle firebay from a volume containing the fuel pump and the fuel tank;
operating a valve coupled to a connector coupled inline with the fuel feed line at a location of a cold side portion of the fuel feed line, wherein the cold side portion of the fuel feed line extends from the fuel tank to the firewall, and wherein a hot side portion of the fuel feed line extends from the firewall to the engine; and
introducing, by operating the valve, fluid from a fluid source into the fuel feed line to provide a siphon break in the fuel line such that the only fuel reaching the engine is the remaining fuel in the fuel feed line downstream of the connector and the introduced fluid, the fluid received from a fluid feed line coupled to the fluid source and to the valve.