Rate shaped fuel injector with internal dual flow rate office

Details Rate shaped fuel injector with internal dual flow rate office Rate shaped fuel injector with internal dual flow rate office

1998-06-25

2000-09-05

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

251 52, F02M 6120

Patent

active

061130125

ABSTRACT:
A fuel injector nozzle assembly includes a nozzle body that defines a nozzle outlet. A needle valve member is positioned in the nozzle body and moveable between a first position in which the nozzle outlet is blocked and a second position in which the nozzle outlet is open. At least one of the nozzle body and the needle valve member define a first chamber fluidly connected to a second chamber by at least one dual flow rate orifice. The needle valve member displaces fluid from the first chamber into the second chamber through the at least one dual flow rate orifice when moving from its first position to its second position. The dual flow rate orifice is sized and shaped to produce a flow restriction and to slow the movement of the needle valve member when moving from its closed position to its open position, but permit relatively unrestricted displacement flow in the opposite direction.

REFERENCES:
patent: 3469793 (1969-09-01), Guertler
patent: 3831863 (1974-08-01), Fenne
patent: 3982694 (1976-09-01), Bailey
patent: 4747545 (1988-05-01), Trachte et al.
patent: 4911366 (1990-03-01), Priesner
patent: 5209403 (1993-05-01), Tarr et al.
patent: 5328094 (1994-07-01), Goetzke et al.
patent: 5429309 (1995-07-01), Stockner
patent: 5484108 (1996-01-01), Nally
patent: 5487508 (1996-01-01), Zuo
patent: 5505348 (1996-04-01), Camplin
patent: 5803370 (1998-09-01), Heinz

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