Robert Boschgmbh

Hans Kubach

Asta Hascher-Reichl

Juergen Graner

Wolfgang Maisch

Marcel Kirchner

Rudolf Sauer

Karl Gmelin

Klaus-Jurgen Peters

Guenter Dantes

Peter Schelhas

Werner Paschke

Eugen Joos

Erich Singer

Hartmann Rupp

Hermann Gassler

Karlheinz Schultheiss

Wolf Wessel

Gerhard Stumpp

Udo Hafner

Johannes Locher

Werner Jundt

Rudolf Krauss

Ulrich Kemmner

Ulrich Flaig

Wolfgang Kienzle

Hermann Eisele

Wolfgang Kosak

Fridolin Piwonka

Klaus Kaiser

Gunther Jaggle

Thomas Kuttner

Theodor Gast

Peter Zieher

Gerold Grimm

Winfried Arnold

Ludwig Walz

Kurt Binder

Guenther Bantleon

Andreas Boehringer

Gerhard Schielinsky

Wolfgang Misch

Werner Gross

Waldemar Becker

Marcel Kibchner

A nozzle plate, particularly for fuel injection valves, with at least one flow path which has at least one supply opening, which path includes a ring gap which opens into a ring-shaped exit opening, as well as a method for the production of such a nozzle plate. For the nozzle plate, it is provided that the flow path has a ring channel assigned to the supply opening, which channel makes a transition into a cylinder-shaped ring gap with a cross-section which narrows in the region of the exit opening. The production of the nozzle plate takes place in that a cavity mold corresponding to the flow path through the nozzle plate is produced, that a layer embedding the cavity mold is galvanically deposited, and that the cavity mold is removed from the galvanically deposited layer.

Method for producing a nozzle plate

Nozzle plate, particularly for fuel injection valves, and method for the

Electromagnetically actuable fuel injection valve

An electromagnetically actuated fuel injection valve for a fuel injection system of an internal combustion engine includes a valve housing, a magnet coil, and a valve needle. When the magnet coil is excited, the valve needle lifts off from its valve seat and allows fuel to pass. Downstream after the valve seat of the valve needle, two annular peripheral knife-edges face one another to generate one or more conical fuel lamellae extending in substantially laminar fashion. An annular metering gap is formed by the two knife-edges located close together such that the lower annular peripheral edge of the metering gap includes a stationary spray plate or a valve needle end piece.

Electromagnetically actuated fuel injection valve

A magnet system for an outwardly opening magnet valve having a core winding, an armature carrying the valve body, and a permanent magnet disposed symmetrically to the winding. The closed magnet circuits of the electromagnet and permanent magnet partly overlap, and a ring of ferromagnetic material is associated with the permanent magnet 1 in the magnet circuit of the electromagnet, this ring absorbs half the flux I of the permanent magnet, and the magnet circuit for the electromagnet is dimensioned to one-half the permanent flux.

Magnet system for a valve

A magnet system for magnet valves for controlling liquids including an electromagnet and a permanent magnet that produces magnetic fluxes, the magnetic fluxes of which are oriented opposite one another in a working air gap formed between a free-floating armature and a magnet pole. To attain a course of the force of attraction acting upon the armature that becomes negative beyond a certain excitation of the electromagnet, and to reduce the trigger power for the electromagnet, a magnetic opposite pole is disposed on the side of the armature remote from the working air gap, forming a second working air gap, which is coupled to the magnet housing, optionally via a stray air gap, via a flow guide element annularly engaging the permanent magnet.

Magnet system

A valve for the intermittent introduction of fuel, in particular gaseous fuel, into an intake tube of an internal combustion engine, which is provided with an electrically actuatable valve member disposed in a valve housing. The valve comprises a slide valve having a substantially cosine-like metering motion, and a metering conduit that opens only after a predetermined portion of the metering motion beyond a position of repose of the valve member is provided. As a result, the control edges are overtaken very fast, and a steep rise or drop in the insufflated fuel quantity takes place. A good approximation to the ideal course, which is equivalent to the course of the aspirated air quantity, is therefore achieved.

Valve for intermittent introduction of fuel

An electromagnetically actuatable valve is proposed that serves in particular as a fuel injection valve for fuel injection systems of internal combustion engines. An armature cooperates with magnet poles, and a bearing cone the length of the generatrix of which is approximately equivalent to the diameter is machined into a valve seat body. The armature and valve seat body may also have bearing faces of calotte shape facing one another.

Electromagnetically actuatable valve

An arrangement for injecting fuel for an internal combustion engine has at least one inductive injection valve which is switch controlled via a controllable semiconductor switch. This injection valve is provided with an inductive or capacitive oscillator component for atomizing fuel. During the switching control operation, electrical energy from the inductive injection valve is fed into the oscillator component for exciting its oscillating movement each time the semiconductor switch is opened. On the one hand, with this arrangement no separate high frequency generator is required for the oscillator component while, on the other hand, a second transistor is not required for the switch-controlled output stage with a rapid discharge without loss being possible at least in principle.

Arrangement for injecting fuel for an internal combustion engine

A magnetic valve has a coil, an armature, and a permanent magnet arranged coaxially with the coil, wherein the permanent magnet is formed as a plate with magnetic lines of force extending in the same direction or oppositely to the magnetic lines of force of the coil, and the armature is formed as a valve body opening in direction toward a lower pressure.

Valve with membrane spring

An electromagnetically actuatable valve that serves in particular in inject fuel into the intake tube of internal combustion engines operating with fuel injection systems. The fuel injection valve includes a valve housing core with a surrounding magnetic coil and a guide diaphgram secured across the valve housing, the guide diaphragm urges an armature/valve closing element, embodied in one piece in the form of a spherical section, toward a valve seat. The guide diaphragm loosely engages a flat bearing face of the armature, so that the valve closing element can automatically center itself with respect to the valve seat. Upon a reciprocating movement of the armature/valve closing element, the frictional force between the guide diaphragm and the bearing face prevents a radial movement of the armature/valve closing element.

A 3/3 way control valve including a three-stage electromagnet for controlling a hydraulic working cylinder that actuates a control member of an injection system, including a winding of the electromagnet the axis of which extends crosswise to the axis of an armature and directional control valve and in which the pole pieces of the pole legs of the yoke are unequally polarized. The armature is actuated counter to a restoring spring and slides between two corresponding cylindrical hollow faces of the pole pieces which act as a proportional magnet, and in which the winding and in part the yoke have an extrusion coat of insulating plastic.

Electromagnet for fuel injection systems

An electromagnetically actuatable valve which serves as a fuel injection valve for fuel injection systems in internal combustion engines. The valve includes a valve housing as well as a magnetic coil with poles serving as the core, with which an armature cooperates, which is connected to a valve element the sealing element of which cooperates with a valve seat in a valve seat body. The valve element protrudes without contact through a throttle bore in the valve seat body with a throttling element and is held in a sealing manner on the valve seat by the armature when the magnetic coil is excited. When the magnetic coil is not excited, the valve element is moved by the pressure forces of the fluid in the opening direction of the valve and is centered by the fluid flow.

A magnetic valve that is switchable in two directions is proposed. The valve comprises an armature, which is firmly joined to a valve body; at least two magnetic coils disposed in one plane and having ferromagnetic cores inserted in them; and two pole bodies, which are joined to the cores and with them belong to the electromagnetic circuit, and acts on the oppositely located flat sides of the armature. Permanent magnets are inserted into the pole bodies in such a way that the operative surface area of the pole bodies is divided into a number of zones, each having a homogeneous magnetic orientation in which the number of zones is equal to the number of magnetic coils.

Double-acting magnetic valve

Growing community of inventors

Korntal-Munchingen, Germany

Hans Kubach