FUEL SYSTEM OF GAS TURBINE ENGINES

摘要

A method for purging fuel from a fuel system of a gas turbine engine on shutdown of the engine comprises, in one aspect, terminating a fuel supply to the fuel system and using the residual compressed air to create a reversed pressure differential in the fuel system relative to a forward pressure differential of the fuel system used to maintain fuel supply for engine operation, and under the reversed pressure differential substantially purging the fuel remaining in the system therefrom to a fuel source.

主权项

1. A method for purging fuel from a fuel system of a gas turbine engine on shutdown of the engine, the method comprising:
(1) terminating a fuel supply to the fuel system on shutdown of the engine; and (2) using residual compressed air in a combustor of the engine to create a reversed pressure differential in the fuel system in contrast to a forward pressure differential of the fuel system used to maintain the fuel supply when the engine is in operation, and under the reversed pressure differential substantially purging the fuel remaining in the system therefrom to a fuel source.