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. 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. Chamber above needle and sleeve of every atomiser is communicated with low-pressure hydraulic accumulator with its outlet communicated with separate high-pressure fuel pump inlet via pipelines with check valves. High-pressure control valve of every separate high-pressure hydraulic accumulator is communicated with low-pressure hydraulic accumulator. Needle is mechanical engaged with mechanical valve stem with shutoff surface covering the channel communicating common chamber above needle and sleeve with low-pressure hydraulic accumulator in shutoff. Needle is articulated with sleeve to displace upward jointly with the sleeve. Atomiser needle is engaged via displacement multiplier or directly with fast-operation reversing mechanical drive for linear displacement along needle axis. Said drive is provided with at least one plate engaged with needle.

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

2 cl, 4 dwg