FIELD: power engineering.
SUBSTANCE: invention relates to the field of power engineering. Low-temperature fuel pumping system from fuel source to ensure uniform output without pulsations comprises multi-axis electronic controller including software; a plurality of linear pumps, each including: an upper drive portion and a lower hydraulic portion, the drive portion having a linear drive system terminating on a drive shaft, which linearly moves back and forth along the axis; drive system of drive part of each pump is made with possibility of independent adjustment by means of software contained in multi-axis electronic controller; hydraulic part has piston attached to driving shaft of drive part for linear movement back and forth inside cylinder of hydraulic part of pump, wherein the piston has a head with a plurality of spaced apart piston rings, which provide a sealed movable contact with the inner cavity of the cylinder of the hydraulic part of the pump; absence of hydraulic seals in lower hydraulic part; inlet channel hydraulically connected to low-temperature fuel source and leading to lower end of each cylinder of hydraulic part of pump and to connection through valve with air layer of open head and located under piston head, wherein piston upward movement creates negative pressure drop in air layer, sufficient to let low-temperature fuel into air layer, and displacement down piston displaces low-temperature fuel through lower flow channel and into outlet common for all cylinders of hydraulic part of pump; sealed housing arranged around and completely closing one or more linear pump, each of which includes upper drive part and lower hydraulic part, wherein the housing is hermetically sealed to house the low-temperature fuel which volatiles from the pump hydraulic pump cylinder; wherein system operation includes coordinated actuation of separate pumps to provide profile without pulsations of output pressure.
EFFECT: invention allows increasing service life of high-pressure pumps.
24 cl, 11 dwg
