Air assist injector and retainer shroud therefor

Details Air assist injector and retainer shroud therefor Air assist injector and retainer shroud therefor

1997-04-18

1998-08-18

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

And valving means controlling flow for combining

2394173, 2395854, B05B 712

Patent

active

057948569

ABSTRACT:
An air assist top feed fuel injector having a nozzle end for delivering fuel to an engine induction passage includes a retainer shroud on the injector nozzle end for directing air adjacent the nozzle end for atomizing the fuel. In a preferred embodiment, the retainer shroud is an integral member including an interconnected end cap, a central seal retainer and a connecting sleeve between the cap and retainer. The member directs assist air around the nozzle to atomize the fuel and retains lower and central seal rings that prevent leakage from or into the air passages. Alternative embodiments include separate end cap, upper ring retainer and lower ring retainer members or integral upper and lower retainer members that coact to similarly direct and prevent leakage of assist air.

REFERENCES:
patent: 5046472 (1991-09-01), Linder
patent: 5218943 (1993-06-01), Takeda et al.
patent: 5238192 (1993-08-01), McNair
patent: 5323960 (1994-06-01), Buchholz et al.

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