Two-stage fuel injector

Details Two-stage fuel injector Two-stage fuel injector

2011-03-01

2011-03-01

Tran, Len (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S088000, C239S091000, C239S533300, C239S533700, C239S533110, C060S740000

Reexamination Certificate

active

07896260

ABSTRACT:
This injector with two valves (7, 10) which open at different fuel pressures so as to establish a primary flow regime and then a secondary flow regime is characterized in that the primary regime is enriched with fuel via an orifice (21) which adds a branch to the primary flow path of the fuel, but which is closed when the secondary valve is displaced so as to prevent enrichment of the fuel in the secondary regime. This invention applies in particular to certain aircraft engines.

REFERENCES:
patent: 3662959 (1972-05-01), Sample, Jr.
patent: 4938418 (1990-07-01), Halvorsen
patent: 6644031 (2003-11-01), Lavie et al.
patent: 6758043 (2004-07-01), Michau et al.
patent: 2003/0093998 (2003-05-01), Michau et al.
patent: 2 832 492 (2003-05-01), None
patent: 2 134 244 (1984-08-01), None

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