FIELD: engines and pumps.
SUBSTANCE: invention can be used in fuel injection systems of internal combustion engines (ICE). Fuel supply device is provided that includes an injector with two electrically controlled on-off valves. Nozzle includes needle 4 overlapping the first group of spray holes 2 and sleeve 10 covering the second group of spray holes 3. Fuel injection control is performed by supplying or draining fuel from needle control chamber 7 and sleeve control chamber 13 by controlling the position of the on-off valves. Injector allows at least one pre-injection, one main injection and at least one injection after the main injection. Injection can be carried out either through each group of spray holes individually or through both groups of spray holes.
EFFECT: proposed device allows to improve the dynamics of fuel supply, realize the multiverse and length-controlled injections, and boost the engine.
2 cl, 3 dwg
