Automatic two-speed pump assembly

Details Automatic two-speed pump assembly Automatic two-speed pump assembly

1979-10-01

1981-10-20

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

747105, 417364, F04B 3500

Patent

active

042957982

ABSTRACT:
An automatic two-speed pump assembly for use with a diesel engine. The assembly includes a transmission capable of driving an associated fuel pump in high- and low-speed ranges, and a fluid control device responsive to pump pressure for shifting the transmission to its low-speed range at a pump pressure corresponding to an engine speed between crank and idle speeds. The fluid control device is responsive to pump pressure for shifting the transmission to its high-speed range at a pump pressure corresponding to an engine speed below crank speed.

REFERENCES:
patent: 2741421 (1956-04-01), Wood
patent: 2881597 (1959-04-01), Jacobs
patent: 3155040 (1964-11-01), Shurts et al.
patent: 3577965 (1971-05-01), Sundberg

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