Fuel injector with grooved check member

Details Fuel injector with grooved check member Fuel injector with grooved check member

2005-08-25

2009-08-25

Evans, Robin O (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Processes

C239S005000, C239S533300, C239S533120, C239S584000

Reexamination Certificate

active

07578450

ABSTRACT:
A method and apparatus for injecting fluid into a machine are disclosed. A fluid injector is disclosed having a nozzle body with first and second body portions and at least one fluid injection orifice within the second body portion. The nozzle body may be configured for transmitting fluid from the first body portion toward the orifice. The fluid injector may also include a check member movably arranged inside the nozzle body for affecting fluid flow through the orifice and having a contoured outer surface defining (i) a recessed region and (ii) a generally convex region forming at least a portion of the recessed region.

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SAE Technical Paper Series 910185, Contribution of Optimum Nozzle Design to Injection Rate Control, Nippondenso Co. Ltd., Feb. 25-Mar. 1, 1991.

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