Fuel injection valve

Details Fuel injection valve Fuel injection valve

2005-02-01

2005-02-01

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S596000, C239S533200

Reexamination Certificate

active

06848636

ABSTRACT:
A fuel injection valve includes a valve seat portion, a nozzle hole plate, and a valve member. The valve seat portion has an inner circumferential surface including a valve seat. The nozzle hole plate is disposed at a downstream side of a fuel passage of the valve seat. The nozzle hole plate has a nozzle hole for injecting fuel flowing out from the fuel passage. The valve member seats on the valve seat to close the fuel passage and unseats from the valve seat to open the fuel passage. Diameter of the inner circumferential surface decreases as approaching to a downstream side. The nozzle hole of the nozzle hole plate is formed so that length of radial outside of the nozzle hole with respect to a shaft center of the fuel injection valve is smaller than that of radial inside of the nozzle hole.

REFERENCES:
patent: 4646974 (1987-03-01), Sofianek et al.
patent: 4699323 (1987-10-01), Rush et al.
patent: 4890794 (1990-01-01), Imafuku et al.
patent: 6394367 (2002-05-01), Munezane et al.
patent: 20020125347 (2002-09-01), Munezane et al.
patent: 2001-317431 (2001-11-01), None

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