Pressure actuated fuel injector

Details Pressure actuated fuel injector Pressure actuated fuel injector

2011-01-11

2011-01-11

Gorman, Darren W (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S088000

Reexamination Certificate

active

07866575

ABSTRACT:
An engine assembly may include a fuel injector having a housing, an actuation mechanism, and a valve member. The housing may define a high pressure region, a low pressure region, a longitudinal bore, and a valve seat having an aperture extending therethrough. The actuation member may be disposed within the longitudinal bore and may include a first axial end surface. The valve mechanism may include a second axial end surface abutting the first axial end surface. The first and second axial end surfaces define an outer contact perimeter and a chamber within the outer contact perimeter. A radial surface area defined by the chamber formed by the first and second axial end surfaces may be at least 25 percent of a radial surface area defined within the outer contact perimeter.

REFERENCES:
patent: 2004/0021011 (2004-02-01), Ruthardt et al.
patent: 2004/0026645 (2004-02-01), Hanneke et al.
patent: 2008/0191064 (2008-08-01), Sawaki et al.
patent: 2008/0272214 (2008-11-01), Male et al.

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