Combined lift and metering pump

Details Combined lift and metering pump Combined lift and metering pump

F - Mech Eng,Light,Heat,Weapons

04

C

103/76

F04C 2/10 (2006.01) F04B 49/08 (2006.01) F04C 13/00 (2006.01) F23K 5/00 (2006.01) G01F 3/10 (2006.01)

Patent

CA 1148791

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.

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