DEVICE WITH CONTROLLABLE ELECTRIC DRIVE FOR DELIVERING AND METERING OF FUEL Russian patent published in 2006 - IPC F02C9/26 

FIELD: air-jet engines; fuel flow control.

SUBSTANCE: main drawback of known devices containing electrically driven pumping unit controlled by speed of rotation of drive made in form of fuel feed and metering gear pumps is leakage at end faces of gears of metering pump which affects stability and accuracy of fuel rate. To stop said leakages metering pump is installed on sliding bearings provided with ring grooves on end faces of steps, grooves being connected by channels with input of pumping metering unit.

EFFECT: increased accuracy and improved stability of maintaining of rate of metered out fuel, enlarged sphere of application of proposed device.