Compound-angled orifices in fuel injection metering disc

Details Compound-angled orifices in fuel injection metering disc Compound-angled orifices in fuel injection metering disc

2006-05-23

2006-05-23

Ganey, Steven J. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Processes

Of fuel injection

C239S494000, C239S497000, C239S533120, C239S552000, C239S585100, C239S596000, C239S900000

Reexamination Certificate

active

07048202

ABSTRACT:
A valve subassembly of a fuel injector that allows spray targeting and distribution of fuel to be configured using non-angled or straight orifice having an axis parallel to a longitudinal axis of the subassembly. Metering orifices are located about the longitudinal axis and defining a first virtual circle greater than a second virtual circle defined by a projection of the sealing surface onto the metering disc so that all of the metering orifices are disposed outside the second virtual circle. The projection of the sealing surface converges at a virtual apex disposed within the metering disc. At least one channel extends between a first end and second end. The first end is disposed at a first radius from the longitudinal axis and spaced at a first distance from the metering disc. The second end is disposed at a second radius with respect to the longitudinal axis and spaced at a second distance from the metering disc such that a product of the first radius and the first distance is approximately equal to a product of the second radius and the second distance. Methods of controlling spray distribution and targeting are also provided.

REFERENCES:
patent: 5484108 (1996-01-01), Nally
patent: 5489065 (1996-02-01), Nally, Jr.
patent: 5746376 (1998-05-01), Romann et al.
patent: 6330981 (2001-12-01), Nally et al.

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