NOZZLE FOR DIESEL ENGINE Russian patent published in 2013 - IPC F02M61/12 F02M61/16 

FIELD: machine building.

SUBSTANCE: nozzle for diesel engine consists of nozzle casing that includes cavity made in a form of a cup with spring, adjustable washers and rod located in it, fuel supply channel and excess fuel discharge channel, sprayer that consists of sprayer casing joined to nozzle casing and sprayer needle mounted in sprayer casing capable of axial movement and spring pressed via rod by its locking edge against sprayer casing saddle. Nozzle casing cavity made in a form of a cup is bored forming annular step and is additionally equipped with plate washer and washer that are pressed against this annular step by sprayer casing face end, the connection of which to nozzle casing is made by principle of machine tapers, note that the internal tapered part of nozzle casing is additionally equipped with two annular grooves and external tapered part of sprayer casing - with one annular bore joined between themselves in such a way to perform possible fuel purification in cavity formed between them by principle of slotted filter, and annular groove made beyond the connection to nozzle casing for sprayer disassembling.

EFFECT: creation of conditions for increase of fuel injection pressure due to increase of reliability of mating parts' joint seals and increase of sprayers lifetime due to improvement of fuel filtering quality.

1 dwg