Gas turbine combustion engine fuel control

Claim 1

FUEL CONTROL APPARATUS FOR A COMBUSTION ENGING HAVING A COMBUSTION CHAMBER, SAID FUEL CONTROL APPARATUS COMPRISING: A CONTROL LEVEL FOR CONTROLLING THE OPERATION OF THE ENGINE; A SOURCE OF PRESSURIZED FUEL; A FUEL CONDUIT CONNECTED TO SUPPLY PRESSURIZED FUEL FROM SAID SOURCE TO THE COMBUSTION CHAMBER: GOVERNOR MEANS INCLUDING A VALVE IN SAID CONDIUT RESPONSIVE TO THE POSITION OF SAID CONTROL LEVER AND ENGINE SPEED FOR CONTROLLING FUEL FLOW TO MAINTAIN A SELECTED ENGINE SPEED; FIRST VALVE MEANS OPERATIVELY CONNECTED TO SAID FUEL CONDUIT FOR CONTROLLING THE FUEL PRESSURE IN SAID CONDUIT AND THUS THE FLOW OF FUEL THERETHROUGH; SECOND VALVE MEANS RESPONSIVE TO A FIRST VARIABLE CONDITION OF ENGINE OPERATION AFFECTING ENGINE POWER OUTPUT OPERATIVELY CONNECTED TO SAID FUEL CONDUIT DOWNSTREAM FROM SAID GOVERNOR VALVE FOR CONTROLLING FUEL FLOW AS A FUNCTION OF SAID VARIABLE CONDITION; CONTROL MEANS INCLUDING FLUID PRESSURE RESPONSIVE MEANS RESPONSIVE TO THE FUEL PRESSURE DIFFERENTIAL ACROSS SAID GOVERNOR VALVE AND SAID SECOND VALVE MEANS OPERATIVELY CONNECTED TO SAID FIRST VALVE MEANS FOR ACTUACTING THE SAME, MEANS RESPONSIVE TO A SECOND VARIABLE CONDITION OF ENGINE OPERATION AFFECTING ENGINE POWER OUTPUT OPERATIVELY CONNECTED TO SAID FIRST VALVE MEANS FOR ACTUATING SAME IN OPPOSITION TO SAID FLUID PRESSURE RESPONSIVE MEANS, AND MEANS RESPONSIVE TO A THIRD VARIABLE CONDITION OF ENGINE OPERATION AFFECTING ENGINE POWER OUTPUT OPERATIVELY CONNECTED TO SAID FIRST VALVE MEANS FOR MODIFYING THE EFFECT OF SAID SECOND CONDITION RESPONSIVE MEANS ON SAID FIRST VALVE MEANS;