Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1999-04-29
2000-04-04
Lee, Kevin
Valves and valve actuation
Electrically actuated valve
Including solenoid
2395851, 239900, F16K 3102
Patent
active
060451165
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an electromagnetically actuated valve.
BACKGROUND INFORMATION
A conventional electromagnetically actuatable valve is described in German Patent No. 38 31 196, in which a valve needle is composed of an armature, a tubular connecting part, and a spherical valve-closure member. The armature and the valve-closure member are joined to each other via the tubular connecting part, the connecting part acting as the immediate closing-member support, to which the valve-closure member is fixedly joined by a weld. The connecting part has a plurality of flow openings, through which the fuel can exit from an interior feed-through opening and, outside the connecting part, can flow to the valve-closure member, or to a valve seat surface which cooperates with the valve-closure member. In addition, the connecting tube has a longitudinal slot running over its entire length, through which, because of its large-surface hydraulic flow cross-section, fuel can flow very rapidly from the interior feed-through opening. The greater part of the fuel to be spray-discharged already flows out of the connecting part over its entire length, while a slight residual amount does not exit from the connecting part until it arrives at the spherical surface.
German Patent Application No. 195 03 224 describes an electromagnetically actuated injector, which has a valve needle whose closing-member support, which functions as the connecting part, is made of plastic. The spherical valve-closure member and the closing-member support are fixedly joined to each other by a snap-fit connection. In the closing-member support, a plurality of transverse openings are provided through which fuel can already exit from an interior opening, upstream of the valve-closure member. Then the fuel flows outside of and along the closing-member support in the direction of a valve seat surface, flowing through the molded flow paths on the outer periphery of the closing-member support shortly before arriving at the valve seat surface.
As described in German Patent Application No. 40 08 675, it is sufficiently well known to achieve fixed connections of individual components of valve needles in an integral manner, i.e., by welds.
SUMMARY OF THE INVENTION
The electromagnetically actuated valve of the present invention has the advantage that, in a particularly simple manner, it is cost-effective to manufacture. In this context, it is also advantageous that an extremely simple and cost-effective connection can be achieved between a closing-member support and a spherical valve-closure member. In this context, the closing-member support in its end area is configured for wrapping around the valve-closure member such that it forms one or a plurality of channels directly on the surface of the valve-closure member, through which fuel can flow unhindered from an interior longitudinal bore in the direction of a valve seat surface. In this way, with minimal manufacturing outlays, an optimal inflow to the dosing area of the valve is achieved. Unnecessary, in contrast to known valves, are now, on the one hand, transverse openings and slots in the closing-member support, and, on the other hand, polished sections on the valve-closure member or flow-through grooves in the valve seat body.
It is particularly advantageous to secure the valve-closure member at the closing-member support by means of a non-integral jointing method e.g., by means of pressing-in or flanging. It is then advantageous if the end area of the closing-member support extends in the upstream direction out beyond a spherical equator of the spherical valve-closure member.
In an advantageous manner, the armature can itself function directly as the closing-member support, so that, together with the valve-closure member, there is a two-part valve needle. A valve needle of this type can be manufactured particularly simply and cost-effectively, and, as a result of the reduced number of parts, it has only one single point of connection. The longitudinal bore of the arma
REFERENCES:
patent: 4483485 (1984-11-01), Kamiya et al.
patent: 4564145 (1986-01-01), Takada et al.
patent: 4643359 (1987-02-01), Casey
patent: 4967966 (1990-11-01), Babitzka et al.
patent: 5820031 (1998-10-01), Reiter et al.
patent: 5823446 (1998-10-01), Bennett et al.
Patent Abstracts of Japan, vol. 11, No. 295 (M-626), Sep. 24, 1987.
Graner Jurgen
Maier Dieter
Willke Clemens
Lee Kevin
Robert & Bosch GmbH
LandOfFree
Electromagnetically operated valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetically operated valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetically operated valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-358115