Fuel feed device for gas turbine engines

Claim 2

IN A SYSTEM FOR CONTROLLING THE RATE OF FUEL FEED TO THE BURNER OF A GAS TURBINE ENGINE UTILIZING A DYNAMIC AIR COMPRESSOR, MEANS PROVIDING A FUEL METERIN RESTRICTION, A THROTTLE VALVE FOR CONTROLLING THE AREA OF SAID RESTRICTION, MEANS FOR RESETTING SAID THROTTLE VALVE TO SELECT AN OPERATING SPEED FOR THE ENGINE, MEANS DIRECTLY RESPONSIVE TO THE INLET AND DISCHARGE PRESSURE OF SAID AIR COMPRESSOR FOR REGULATING THE FUEL METERING HEAD ACROSS SAID METERING RESTRICTION, AND MEANS FOR MODIFYING THE ACTION OF THE PRESSURE RESPONSIVE MEANS AS A FUNCTION OF COMPRESSOR INLET PRESSURE AND TEMPERATURE.

Claim 3

IN A SYSTEM FOR CONTROLLING THE RATE OF FUEL FEED TO A GAS TURBINE ENGINE HAVING A BURNER AND A COMPRESSOR, A FUEL SUPPLY CONDUIT FOR CONDUCTING FUEL TO THE BURNER, VALVE MEANS IN SAID CONDUIT FOR CONTROLLING THE FLOW OF FUEL THERETHROUGH, AND MEANS FOR CONTROLLING SAID VALVE MEANS INCLUDING A PASSAGE WHICH CONNECTS A SOURCE OF COMPRESSOR GENERATED AIR PRESSURE TO A SOURCE OF PRESSURE OF THE AIR FLOWING TO THE COMPRESSOR, FIRST AND SECOND RESTRICTIONS IN SERIES IN SAID PASSAGE, AND MEANS RESPONSIVE TO THE PRESSURE IN SAID PASSAGE INTERMEDIATE SAID RESTRICTIONS AND OPERATIVELY CONNECTED TO SAID VALVE MEANS.

Claim 4

FOR AN INTERNAL COMBUSTION ENGINE HAVING AN AIR COMPRESSOR FOR SUPPLYING AIR THERETO, A FUEL SUPPLY SYSTEM COMPRISING: A MANUAL CONTROL MEANS, A CONSTANT CAPACITY FUEL PUMP, DRIVEN BY THE ENGINE, FOR SUPPLYING FUEL THERE TO, A BY-PASS RELIEF VALVE AROUND SAID PUMP FOR VARYING ITS DELIVERY, AND MEANS, RESPONSIVE TO SAID MANUAL CONTROL MEANS, SAID ENGINE SPEED AND THE RATE OF MASS AIR FLOW THROUGH SAID ENGINE, AND ACTING ON SAID VALVE, FOR AUTOMATICALLY REGULATING THE FLOW OF FUEL FROM SAID PUMP TO SAID ENGINE, SO AS TO PRODUCE A CONSTANT STEADY STATE ENGINE SPEED CORRESPONDING TO THE POSITION OF SAID MANUAL CONTROL MEANS, UNDER VARYING ENGINE OPERATING CONDITION WHICH AFFECT SAID SPEED AND RATE OF AIR FLOW.

Claim 5

IN A SYSTEM FOR CONTROLLING THE RATE OF FUEL FEED TO THE BURNER OF A GAS TURBINE ENGINE HAVING A COMPRESSOR, A FUEL SUPPLY CONDUIT FOR CONDUCTING FUEL TO THE BURNER, VALVE MEANS IN SAID CONDUIT FOR CONTROLLING THE FLOW OF METERED FUEL THERETO, A PRESSURE RESPONSIVE MEMBER CONNECTED TO SAID VALVE MEANS FOR CONTROLLING SAID VALVE MEANS AS A FUNCTION OF THE PRESSURE ACTING ON SAID PRESSURE RESPONSIVE MEMBER, A CONDUIT OPERATIVE TO TRANSMIT A PRESSURE GENERATED BY THE ENGINE COMPRESSOR TO SAID PRESSURE RESPONSIVE MEMBER TO SUPPLY AN ACTUATING AIR PRESSURE THERETO, A FIXED SIZE RESTRICTION IN SAID CONDUIT INTERMEDIATE THE ENDS THEREOF FOR LIMITING AIR FLOW THERETHROUGH, VARIABLE RESTRICTION MEANS OPERATIVELY CONNECTED TO SAID CONDUIT DOWNSTREAM OF SAID FIXED SIZE RESTRICTION OPERATIVE TO BLEED VARYING QUANTITIES OF AIR FROM SAID CONDUIT TO THE ATMOSPHERE TO VARY THE EFFECTIVE PRESSURE ACTING ON SAID PRESSURE RESPONSIVE MEMBER.