Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – Reciprocating
Patent
1998-04-06
1999-11-02
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
Reciprocating
2395854, 2395855, 2395339, 25112915, 25112921, B05B 130, F16K 3102
Patent
active
059754362
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an electromagnetically actuable valve.
BACKGROUND INFORMATION
German Patent Application No. 40 08 675 describes a needle valve for an electromagnetically actuatable valve which consists of an armature, a valve closure member, and a sleeve-shaped joining part which joins the armature to the, for example, spherical valve closure member. Permanent connections between the individual needle components are achieved, for example, by laser welding. The armature fits around the joining part completely radially and at least partially axially, since the joining part is attached in a continuous longitudinal opening of the armature. The joining part has a continuous internal longitudinal opening in which fuel can flow toward the valve closure member and then emerges, near the valve closure member, through radially extending transverse openings situated in the wall of the joining part. The tubular joining part has a constant diameter over its entire axial length, so that a cross section which is circular throughout (when viewed in an axial direction) is present, interrupted only by a narrow longitudinal slit and transverse openings.
German Patent Application No. 44 20 176 describes an electromagnetically actuatable valve which includes a valve needle, an armature, a valve closure member, and a joining part which joins two needle components. The joining part is produced from a profiled blank and allows fluid flow only externally from the profile. The profile arms of the profiled joining part are provided acts to yield cross-shaped, Y-shaped, triangular, circular segment -shaped, and other cross sections. Because of the solid configuration of the joining parts made from profiled blanks, the mass of the valve needle is comparatively large.
European Patent Application No, 0 690 224, describes a fuel injection valve which includes a nozzle opening which, when the valve is installed, its positioned in an interior portion of an intake conduit, so that spray discharge can occur essentially directly into an intake valve of an internal combustion engine, thus avoiding any wall wetting. In some circumstances, displacing the spray discharge point forward increases the mass and volume of the injection valve due to the elongation of individual valve components.
SUMMARY OF THE INVENTION
The electromagnetically actuatable valve according to the present invention, its advantageous that in a simple and economical manner, a reduction in the weight of the valve is attained as compared with the conventional valves having the same overall size. According to the present invention, this is achieved by using a punched and bent part made of sheet metal (as a joining part of a valve needle). This punched and bent part includes, over a large part of its axial extension, an open profile differing in cross section from an annular shape, and which has a smaller outer periphery than the peripheries of the annular profile of the ends of the joining part or of profiles of comparable conventional joining parts or valve needles. Another advantage of the valve needle according to the present invention is that the valve needle is easily manufactured using bending and impression processes. The configuration of the profiled joining part can provide a mass reduction of approximately 30% as compared with joining parts configured in continuously tubular fashion with an annular cross section, or to an even greater mass reduction as compared with valve needles of solid configuration. This mass savings its particularly significant for elongated valves, in which the spray discharge point of the valve is set far to the front. As a result, the spray discharge region extends far into, for example, the intake conduit of an internal combustion engine, Wall wetting of the intake manifold can easily be prevented by targeted spray discharge onto one or more intake valves, thus reducing fuel consumption and the exhaust emissions of the internal combustion engine. Since the wear forces on the valve seat of the val
REFERENCES:
patent: 4944486 (1990-07-01), Babitzka
patent: 5580001 (1996-12-01), Romann et al.
patent: 5636827 (1997-06-01), Kiilgore et al.
Reiter Ferdinand
Stier Hubert
Evans Robin O.
Kashnikow Andres
Robert & Bosch GmbH
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