Power plants – Reaction motor – With destruction sensing and preventing means
Patent
1979-06-05
1981-09-29
Myhre, Charles J.
Power plants
Reaction motor
With destruction sensing and preventing means
123198D, 60 3906, F02C 908
Patent
active
042915325
ABSTRACT:
This invention relates to a fuel supply system for an engine having a main fuel flow scheduling device, an auxiliary fuel flow scheduling device, a power demand adjuster operative to adjust both scheduling device, and a failure detector capable of detecting failure of the main scheduling device and of making the auxiliary scheduling device operative to control fuel flow to the engine following such failure. In the past, fuel systems of this kind have given an abrupt change of fuel flow on changeover to the auxiliary scheduling device giving the possibility of damage to the engine and danger to human life.
In the present invention a metering valve 201 forms part of the auxiliary scheduling device 201, 246, 209, 221, 222, 231, 232, 233, 234 for continuous adjustment of the flow to the engine permitted by the main scheduling device 184. Whenever the auxiliary scheduling device begins to control fuel flow, the flow remains constant at the instant of changeover at the value determined by the main scheduling device just prior to the changeover.
The auxiliary scheduling device may be arranged for slow self-variation after the changeover to alter the relation between fuel flow to the engine and the setting of the power demand adjuster.
REFERENCES:
patent: 2617477 (1952-11-01), Isreeli
patent: 2851857 (1958-09-01), Jones
patent: 3293847 (1966-12-01), Rogers
patent: 3937588 (1976-02-01), Kisslan
Dowty Fuel Systems Limited
Miller Carl Stuart
Myhre Charles J.
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