Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1978-01-19
1980-05-13
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
13762563, 13762564, 91387, F02C 908
Patent
active
042021715
ABSTRACT:
Fuel dispensing apparatus for dispensing fuel to a gas turbine engine is provided which includes a fuel metering slide valve having a control slide piston which directly controls an opening for supply of fuel to a gas turbine engine. A piston-cylinder servo-mechanism is provided for controlling flow of a servo fluid which acts on the control slide piston to assist in the movement thereof between respective positions. An auxiliary control slide piston of the servo-mechanism is in turn acted upon by supply of pressure to respective oppositely facing pressure surfaces from an electro-hydraulic converter. The electro-hydraulic converter is controlled by an electronic control mechanism responsive to control an engine operating parameters. In order to attenuate the effects due to the servo-mechanism supplying servo-assist fluid pressure to the control slide piston, a feedback signal arrangement including a coil spring abutting oppositely facing surfaces of the auxiliary control piston and the control piston, as well as pressure fluid acting on oppositely facing pressure faces of said pistons is provided. Also, an electrical signal generating means is provided for supplying an electrical signal to the electronic control mechanism, which electrical signal is a direct function of the instantaneous position of the control slide piston of the metering valve.
REFERENCES:
patent: 2411748 (1946-11-01), Kelley
patent: 2754843 (1956-07-01), Hauber
patent: 2947285 (1960-08-01), Baltus et al.
patent: 2966891 (1961-01-01), Williams
patent: 3208352 (1965-09-01), Lucien
patent: 3229588 (1966-01-01), Czernek
patent: 3454026 (1969-07-01), Orme
patent: 3866416 (1975-02-01), Lewis
Greune Christian
Jurisch Wilhelm
Maier Karl
Garrett Robert E.
Motoren- und Turbinen-Union GmbH
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