DIFFUSER-TYPE SPRAYER FOR CARBURETTOR OF INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed sprayer contains body and ring insert installed in sprayer body. Inner surface of ring insert forms variable-section through air channel. Outer surface of ring insert forms ring distributing channel with sprayer body. Said channel is connected with fuel feed channel made in sprayer body. At least one swirler with outlet fuel hole is made on inner surface of ring insert. Said swirler is inclined to axis of through air channel. Outlet fuel hole of swirler projects into through air channel. Outlet fuel hole communicates with ring distributing channel, and through air channel is provided with widening outlet surface. Widening outlet surface of through air channel is made stepped. Outlet fuel hole is made in form of two combined slots arranged at angle relative to each other. One slot of outlet fuel hole in direction of air flow is located under base of swirler in parallel to, at least, part of the latter. Second slot passes across air flow being aligned with edge of stepped surface of through air channel. Swirler is made in form of plate with at least partly bent edges. EFFECT: improved atomizing of fuel for provision of homogeneous fuel mixture. 4 cl, 6 dwg