Patent ID: 8733398
Filing Date: 2014-05-27
Classification: F01D,F02C,Y02T,Y10T

Abstract:
1. An aircraft engine fuel control system shut-down arrangement comprising: a fuel shut-off actuation device; a fuel shut-off device controlled by the fuel shut-off actuation device; an engine electronic control unit configured to transmit a first control signal to the fuel shut-off actuation device, the fuel shut-off actuation device closing the fuel shut-off device upon receipt of the first control signal; a metering device located upstream of the fuel shut-off device in a flow configured to supply fuel to an associated aircraft engine; a switch configured to transmit a first shut-down signal to the engine electronic control unit and configured to transmit a second shut-down signal to the fuel shut-off actuation device, the fuel shut-off actuation device closing the fuel shut-off device upon receipt of the second shut-down signal; and a delay device configured to delay transmission of the second shut-down signal to the fuel shut-off actuation device relative to transmission of the first shut-down signal to the engine electronic control unit, wherein the engine electronic control unit is configured to transmit, upon receipt of the first shut-down signal, a second control signal to the metering device so that the metering device reduces supply of fuel to the associated aircraft engine.