Combined lift and metering pump

Details Combined lift and metering pump Combined lift and metering pump

1979-03-23

1981-03-10

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

418170, 418183, F04B 4908, F04C 210, F04C 2908

Patent

active

042550939

ABSTRACT:
A combined lift and metering pump includes a set of relatively rotating pump elements in the form of an outer gear and a eccentrically disposed inner gear fixed on a drive shaft. A regulator communicates through a control passage with a discharge chamber of the pump to regulate fuel pressure in the discharge chamber and a metering orifice formed through the outer gear provides for intermittent communication with a timing port once with each revolution of the outer gear for discharging a metered amount of fuel from the discharge chamber.

REFERENCES:
patent: 2620968 (1952-12-01), Nilsson
patent: 3473477 (1969-10-01), Thompson et al.
patent: 3566901 (1971-03-01), Swedberg

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