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. 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 hydraulic atomiser comprises needle and sleeve aligned therewith and with two levels of orifices. 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. First said valve is connected by lever with rod with fast-operation reversing mechanical drive. Said drive has at least one plate for one cylinder with convex constant-radius definite-length surface with at least one skew. Said drive has the shaft engaged with crankshaft with at least one shaped cam with at least two identical height micro shapes to allow pre-injection and injection via first level orifice and at least one larger-height micro shape for pre-injection and injection after via first- and second-level orifices. Said micro shapes features leading and trailing edges.

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

2 cl, 4 dwg