Power plants – Combustion products used as motive fluid – With safety device
Patent
1976-12-07
1978-10-31
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
With safety device
60 3914, F02C 726
Patent
active
041226674
ABSTRACT:
For a gas turbine engine provided with a fuel feed control system that includes an engine speed sensor and provides a fuel feed rate control signal based on the deviation of the sensed engine speed from an intended speed, the invention provides a system for detecting the presence of an abnormality possibly leading to an overrun of the engine shortly after starting of the engine. This system comprises a timer circuit which produces a signal such as logic "1" signal after the lapse of a preset period of time from starting of the engine, a comparison circuit which produces a signal such as logic "1" signal if the amplitude of the actual engine speed signal is below a normally expected level after the lapse of the preset period of time, and a logical operation circuit which provides a warning signal only when, for example, the outputs of the timer and comparison circuits are both "1" signals.
REFERENCES:
patent: 3420691 (1969-10-01), Smith
patent: 3691759 (1972-09-01), Scheerer
patent: 3793826 (1974-02-01), Holleboom et al.
patent: 4044551 (1977-08-01), Nelson et al.
Hosaka Akio
Tsuruta Eiji
Casaregola Louis J.
Nissan Motor Company Limited
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