DIESEL TWO-FUEL FEED JET Russian patent published in 2008 - IPC F02M43/04 

FIELD: machine building.

SUBSTANCE: diesel two-fuel feed jet incorporates casing with hollow sprayer attached thereto, channels to separately feed two kinds of fuels arranged in the aforesaid casing and sprayer, first communicating with sprayer seat space and second communicating with fuels mixing chamber arranged nearby spring-loaded needle shut-off surface. The shut-off needle has guide and cylindrical surfaces and is arranged inside the sprayer c-inner space to contact the sprayer tapered shut-off surface, spraying holes communicating with under-the-needle space, mixing chamber and diesel combustion chamber, a longitudinal circular channel communicating with the sprayer seat space and fuel mixing chamber nearby the shut-off needle tapered surface. The jet is additionally furnished with a sleeve, its cylindrical outer surface being in contact with the sprayer inner cylindrical surface, while the said cylindrical channel is formed by the shut-off needle cylindrical surface and the sleeve inner cylindrical surface. The sprayer is furnished with a transverse circular groove communicating with the aforesaid fuel mixing chamber via lengthwise channels arranged on the sleeve outer cylindrical surface. One fuel feed channel in the sprayer communicates with the fuel mixing chamber via the sprayer transverse circular groove and the sleeve lengthwise slots. The aforesaid spraying holes are arranged in areas, their number complying with the number of aforesaid holes. The sleeve lengthwise slots are arranged allowing their distribution relative to the number of areas wherein spraying holes are arranged, the holes outlet edges being located onto the sprayer tapered shut-off surface.

EFFECT: injecting two kinds of different-ratio fuels depending upon location of injection zone, that is, allowing fuel mix formation in certain areas.

9 cl, 10 dwg