Valve assembly for an injection valve and injection valve

Details Valve assembly for an injection valve and injection valve Valve assembly for an injection valve and injection valve

2011-03-22

2011-03-22

Gorman, Darren W (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533200, C239S585500, C428S408000

Reexamination Certificate

active

07909270

ABSTRACT:
A valve assembly (80) of an injection valve (82) has a valve body (4) including a central longitudinal axis (L), the valve body (4) having a cavity (8) forming an inner surface (18) of the valve body (4), the cavity (8) having a fluid inlet portion (42), and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (8), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, the valve needle (10) and/or the inner surface (18) of the valve body (4) having a surface layer (48) with a tungsten carbide layer (70) and a carbon layer (72).

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