Pumps – Condition responsive control of pump drive motor – With control of pump drive transmission
Patent
1979-07-12
1982-08-31
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
With control of pump drive transmission
415 26, 415 61, 417216, 417223, 417429, F04B 2304, F04B 4908
Patent
active
043470416
ABSTRACT:
An improved fuel supply apparatus includes a booster pump assembly which is disposed in a fuel tank of an aircraft and is operable to supply fuel to an engine. The rate at which fuel is supplied by the booster pump assembly varies with variations in the demand for fuel by the engine. The booster pump assembly includes a pump having a small volumetric discharge capacity and a second pump having a large volumetric discharge capacity. An electric motor is provided to continuously drive the small pump. A fluid coupling is engaged to connect the large pump with the motor when the discharge pressure from the small pump decreases in response to an increase in demand for fuel by the engine. To engage the fluid coupling, a control assembly directs a flow of fuel to a space between input and output elements of the coupling. When the output pressure from the small pump increases due to a decrease in demand for fuel by the engine, the fluid coupling is drained to disconnect the large pump from the motor. To promote draining of the coupling, the space between the input and output elements of the coupling is vented to tank ullage by the control assembly.
REFERENCES:
patent: 2546034 (1951-03-01), Lansing
patent: 2713981 (1955-07-01), Lansing
patent: 2781727 (1957-02-01), Marshall et al.
patent: 2792192 (1957-05-01), Wheeler
patent: 3589836 (1971-06-01), Danker et al.
patent: 3955365 (1976-05-01), Arao
patent: 3961859 (1976-06-01), Cygnor et al.
Croyle Carlton R.
Look Edward
TRW Inc.
LandOfFree
Fuel supply apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel supply apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel supply apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2182809