Thin disk orifice member for fuel injector
AssigneeSiemens Automotive Corporation
InventorJohn F. Nally, Jr.
Life of this patent
Estimating the term…
Abstract
A thin disk orifice member having fuel metering orifices located on flat planar surfaces extending from the disk surface, The flat planar surfaces from sides of an enclosed structure having three or more sides, The structure may be in one position extending from the disk surface in the direction of the outlet of the injector or may be inverted. The orifices direct the fuel flow in various streams or sprays to individual cylinders of the engine.
Claims44
A thin disk orifice member through which fuel is injected from a fuel injector, said thin disk orifice mender comprising a thin disk having an imaginary main longitudinal axis and a circumferentially extending margin spaced radially outward of said axis and adapted for mounting said disk on a nozzle end of a fuel injector, said margin circumferentially bounding a central region of the disk that is imperforate except for the presence of one or more through-orifices via which fuel passes through the thin disk, said central region comprising a radially outer annular zone that is nominally perpendicular to said axis and circumferentially bounds an inner zone, said inner zone comprising an indentation that contains said one or more through-orifices and that is formed in said disk as at least three polygonally shaped walls, each of which occupies a respective plane that is non-parallel to the planes occupied by the other walls, wherein a first of said walls is triangular in shape and has a base that lies in a plane perpendicular to said axis, an apex that is spaced axially of said base, and respective sides that adjoin respective sides of a second and a third of said walls.
A thin disk orifice member as set forth in claim is 6 in which said indentation is formed to also have a fourth wall that is triangular in shape and substantially congruent with the triangular shape of said first wall, said fourth wall has a base that lies in the same plane perpendicular to said axis as the bases of said first, second, and third walls, said fourth wall further has an apex that is spaced axially of its base and respective sides that adjoin respective sides of said second and third of said walls that are opposite the respective sides of said second and third walls that adjoin the respective sides of said first wall.
A thin disk orifice member through which fuel is injected from a fuel injector, said thin disk orifice member comprising a thin disk having an imaginary main longitudinal axis and a circumferentially extending margin spaced radially outward of said axis and adapted for mounting said disk on a nozzle end of a fuel injector, said margin circumferentially bounding a central region of the disk that is imperforate except for the presence of one or more through-orifices via which fuel passes through the thin disk, said central region comprising an indentation in the form of a three-sided pyramid that contains said one or more through-orifices, the height of said pyramid being in the axial direction.
A thin disk orifice member through which fuel is injected from a fuel injector, said thin disk orifice member comprising a thin disk having an imaginary main longitudinal axis and a circumferentially extending margin spaced radially outward of said axis and adapted for mounting said disk on a nozzle end of a fuel injector, said margin circumferentially bounding a central region of the disk that is imperforate except for the presence of one or more through-orifices via which fuel passes through the thin disk, said central region comprising an indentation having two multi-sided planar walls that contain said one or more through-orifices and that substantially share a common side that is disposed transverse to said axis, said walls falling away from each other at said common side at an obtuse angle to each other as viewed lengthwise of said common side.
Dependencies are inferred from the claim text.