Pumps – With condition responsive pumped fluid control – Plural pump units with individual or relative control
Patent
1983-04-19
1986-05-27
Croyle, Carlton R.
Pumps
With condition responsive pumped fluid control
Plural pump units with individual or relative control
137115, 417303, 417304, 417310, 417300, F04B 4908, F02C 918, G05D 700
Patent
active
045913170
ABSTRACT:
Controls for a dual element pump having first and second pumps with separate outputs wherein a modulating valve is positionable to control the amount of fuel delivered by a first pump to a fuel control and additionally to selectively control the utilization of flow delivered by the second pump. The flow from the second pump is bypassed when not needed through a pressure regulating valve having a minimal setting and with the setting of the pressure regulating valve being increased by operation of the modulating valve prior to the flow from the second pump being added to the flow from the first pump. The control of the modulating valve is by means of a flow control valve operating through dynamic compensator structure. The flow control valve is positioned by a head sensor including a jet pipe shiftable from a null position by a pressure differential signal delivered by two pressure sensing lines sensing a pressure differential across a variable area opening in a valve forming part of the fuel control. The foregoing structure operates to maintain a constant pressure differential at the fuel control by adjusting the rate of fuel delivery to the fuel control with a stepless transition between the utilization of one or two pumps.
REFERENCES:
patent: 2241330 (1941-05-01), Shaw
patent: 2665637 (1954-01-01), Lauck
patent: 2780172 (1957-02-01), Coar
patent: 2812715 (1957-11-01), Redding et al.
patent: 2835323 (1958-05-01), Booth
patent: 2898737 (1959-08-01), Rockwell
patent: 3033232 (1962-05-01), Bahniuk
patent: 3953153 (1976-04-01), Huber et al.
patent: 4102606 (1978-07-01), Huber et al.
patent: 4245964 (1981-01-01), Rannenberg
patent: 4412789 (1983-11-01), Ohe et al.
patent: 4445818 (1984-05-01), Ohsaki et al.
Croyle Carlton R.
Olds Theodore
Sundstrand Corporation
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