ELECTROHYDRAULIC NOZZLE Russian patent published in 2009 - IPC F02M51/06 

FIELD: engines and pumps.

SUBSTANCE: invention is related to the field of propulsion engineering, in particular to accumulator systems of fuel supply into cylinders of mostly diesel engines. Electrohydraulic nozzle comprises body with fuel-supplying and drain channels installed in it, sprayer with needle fixed in body, which is connected by means of spring-loaded beam with control piston, which is arranged precisely with the possibility of displacement in piston bushing, electromagnet that interacts with valve, control chamber communicated to fuel-supplying and drain throttles and installed in cavity of control piston bushing between control piston and valve seat. Nozzle is additionally equipped with cartridge with electromagnet and valve installed in it. Cartridge comprises drain opening and cavity for installation of valve seat equipped with inlet and drain throttles, control piston bushing and combined with nozzle body, for instance by means if threaded joint. Drain channels of nozzle body and cartridge have outlet into gap between cartridge, control piston bushing and valve seat. Control piston bushing is equipped with fuel supply channel, one outlet of which communicates to fuel supplying channel of nozzle body, and with the other outlet - to inlet throttle of valve seat. Nozzle body, control piston bushing and valve seat are mutually oriented with the help of pins, for instance.

EFFECT: invention makes it possible to simplify nozzle design with appropriate reduction of its prime cost in production.

2 cl, 3 dwg