United Technologies Corporation

Edward F Cole

James G Griffin

Frank A Leachman, Jr

Dean H Crombie

Raymond A Dreisbach, Jr

A floating piston (54) has a valved (86) vent opening (88), with the vent opening closing (92) on movement of the piston. The piston is spring loaded (56, 58) to vent air, but seal fuel. Modulation of pressure in pressure resisting chamber (48) between pump discharge and lower pressures, provides control of the valve. Pressure difference (96, 62) and valve position (36) measurements provide flow measurement data.

Multiple function fuel valve and system

A high speed centrifugal fuel pump delivers fuel to the main metering valve of a fuel control of a gas turbine engine for feeding the engine's burners, and a boost pump and positive displacement pump pressurize fuel for the servo medium for actuating the various valves and engine geometry actuators. The boost pump also assures that the vapor/liquid flow relationship satisfies the engine's requirements.

Centrifugal main fuel pump

This invention relates to the fuel system of a gas turbine power plant and modifies a conventional fuel control to automatically vent trapped air contained in the fuel control and fuel distribution system into the engine's burners by bypassing the conventional minimum pressure and shut off valve. This serves to prime the main fuel pumps when running dry during the switching of one fuel tank to another.

Automatic vent for fuel control

To accommodate fuel having higher freezing points the continuous bypass flow of fuel from the fuel control is selectively diverted to pick up the rejected heat from the engine's lubrication system to heat the fuel in the aircraft fuel tank.

Fuel heating system for gas turbine engine

This system serves to collect and recycle fuel leftover in the fuel manifold and fuel distribution system of a gas turbine power plant when it is shutdown and operates in conjunction with the power plant's existing fuel control.

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Glastonbury, CT, United States of America

Edward F Cole