Patent ID: 6189312
Filing Date: 2001-02-20
Classification: F02C,F05D,Y10T

Abstract:
A fuel metering arrangement, for a gas turbine engine, having a pressurized fuel supply line including a fuel flow metering valve, a pressure drop regulator valve receiving control signals by way of first and second control lines communicating with said fuel supply line at points upstream and downstream, respectively, of said metering valve and operable in response to the pressures in said supply line upstream and downstream, respectively, of said metering valve to maintain the pressure drop across the metering valve substantially constant by controlling the flow of fuel in a spill line from said supply line upstream of said metering valve to a low pressure fuel line, and a throttle device in said spill line and responsive to the pressure in said supply line to regulate fuel flow in said supply line upon failure of the regulator valve in an insufficiently closed or fully open position.