Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1976-12-22
1978-09-05
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
60 3974S, 137 47, F02C 722
Patent
active
041109740
ABSTRACT:
An engine speed governor which utilizes the fuel mass itself as a control element, combined with fuel pressure regulation and orifice pressure drop. The fuel is fed through an orifice and then inwardly through radial slots in a shaft rotating at a speed proportional to engine speed, the rotating columns of fuel in these slots being subjected to centrifugal force and opposing external supply pressure. Equilibrium is achieved when the inlet pressure equals the sum of orifice and slot pressure drops. In the illustrated embodiment, fuel pressure is supplied by pressurizing a fuel tank with compressor discharge air, and thus pressurizing fuel in a manner compensating for slightly lower governed speed when fuel demands are higher. The illustrated embodiment also includes multiple speed selection achieved by selectively opening a plurality of bleed orifices leading from the compressor line to the fuel tank.
REFERENCES:
patent: 2664710 (1954-01-01), Teague
patent: 3021675 (1962-02-01), Schroeder
patent: 3139892 (1964-07-01), McRoberts
Garrett Robert E.
Williams Research Corporation
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