METHOD OF FUEL FEED CONTROL AND DEVICE TO THIS END Russian patent published in 2013 - IPC F02M47/02 F02M63/04 F02M45/08 

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises atomiser with two levels of orifices with spring-loaded needle and sleeve aligned therewith. Said needle and sleeve are articulated. Besides, this device includes separate fuel pump for every atomiser driven by camshaft articulated with crankshaft via roll with rocker. Said hydraulic atomiser comprises needle and sleeve aligned therewith and with two levels of orifices. Is has four controlled mechanical valves with stems, this device includes separate fuel pump for every atomiser driven by camshaft articulated with crankshaft via roll with rocker. Besides, it has high-pressure hydraulic accumulator with high-pressure control valve for every atomiser hydraulically communicated with separate fuel pump at inlet and with atomiser at outlet with its chamber under and above needle and sleeve. Also, it has low-pressure accumulator, mechanical control valve with rod with conical or some other shutoff surface for every atomiser and fast-operation reversing drive for every nozzle. Said low-pressure accumulator is communicated at its inlet with under-plunger chamber of every separate fuel high-pressure pump, displacement multiplier and fast-operation reversing mechanical drive. Control chamber above needle of every atomiser is communicated with low-pressure hydraulic accumulator via channel isolated by first mechanical valve. Control chamber above needle of every atomiser is communicated with low-pressure hydraulic accumulator via channel isolated by second mechanical valve. Second spring-loaded mechanical valve can displace to top position jointly with first valve at upper displacement section owing to engagement there between. Control chamber above needle of every atomiser is communicated with low-pressure hydraulic accumulator via channel isolated by third mechanical valve. Control chamber above needle of every atomiser is communicated with low-pressure hydraulic accumulator via channel isolated by fourth mechanical valve. Fourth spring-loaded mechanical valve can displace to top position jointly with third valve at upper displacement section owing to engagement there between. First and third said valves are connected by lever with rod with fast-operation reversing mechanical drive.

EFFECT: better dynamics of fuel feed, higher indicated efficiency and controlled injection using simple mechanical means.

2 cl, 4 dwg