Abstract: 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.

Abstract: A nozzle plate (10), particularly for fuel injection valves, with at least one flow path which has at least one supply opening (12), which path comprises a ring gap (15) which opens into a ring-shaped exit opening (19), as well as a method for the production of such a nozzle plate (10). For the nozzle plate (10), it is provided that the flow path has a ring channel (14) assigned to the supply opening (12), which channel makes a transition into a cylinder-shaped ring gap (15) with a cross-section which narrows in the region of the exit opening (19, 19'). The production of the nozzle plate (10) takes place in that a cavity mold (30) corresponding to the flow path through the nozzle plate (10) is produced, that a layer (44) embedding the cavity mold (30) is galvanically deposited, and that the cavity mold (30) is removed from the galvanically deposited layer (44).

Abstract: In an electromagnetically actuable fuel injection valve for fuel injection systems of internal combustion engines, including a of valve housing, magnetic coil and a valve closing element which, when the magnetic coil is excited, lifts off from a valve seat and releases fuel, to arrange in the outlet area of the fuel includes at least one diaphragm which is capable of oscillation and forms with other parts of the valve at least one (annular) metering gap and which can be excited solely by the pressure of the fed-in fuel to experience resonance oscillations so that a high-frequency modulation of the fuel lamella emitted from the (annular) metering gap, and a spray angle, is produced.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A fuel injection system is proposed which serves to adapt the fuel-air mixture as precisely as possible to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned a regulating valve whose movable valve element can be exposed on one side to the fuel pressure downstream of the respective metering valve and on the other side to a control pressure line defined on one end by a control pressure valve of the nozzle/impact plate type and on the other end by a control throttle. The control pressure valve has a permanent magnet and an electromagnet, the magnetic fluxes of which are guided via an armature in such a manner that in at least one air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in the same direction, while in at least one other air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in opposite directions.

Abstract: An arrangement for rapid switching of an electromagnetic load includes a series arrangement of a switching device with the electromagnetic load, a relief diode arranged in parallel with the electromagnetic load, and a capacitor arranged in parallel to the switching means. Another switching device is arranged parallel to the capacitor and controls the operation of the latter, while an additional switching device is arranged in series with the relief diode and controls the operation of such relief diode. An operating arrangement for controlling the various switching devices issues various control signals at least some of which depend on electric signals derived from the switching arrangement. During the operation of the switching arrangement, the operating arrangement selectively makes the various switching devices conductive and non-conductive in a predetermined sequence to enhance the speed of switching of the electromagnetic load between its two end states.

Abstract: An electromagnetically actuatable valve is proposed, which serves in particular as a fuel injection valve for fuel injection systems of internal combustion engines. The valve includes pole pieces supported in a valve housing, which are joined by a yoke on which a magnetic coil is disposed. Remote from the yoke, the first pole piece has a first pole and the second pole piece has a second pole, the pole pieces are arranged to extend toward one another and define therebetween a gap in which a nonmagnetic stop may be disposed. The pole pieces have a continuously extending, concave surface which confront a ball which serves as both the armature and the movable valve element. The ball is urged toward a valve seat by a guide diaphragm supportedly attached to the housing at its circumference.

Abstract: A fuel injection system is proposed which serves to adapt the fuel-air mixture as precisely as possible to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned a regulating valve whose movable valve element can be exposed on one side to the fuel pressure downstream of the respective metering valve and on the other side to a control pressure line defined on one end by a control pressure valve of the nozzle/impact plate type and on the other end by a control throttle. The control pressure valve has a permanent magnet and an electromagnet, the magnetic fluxes of which are guided via an armature in such a manner that in at least one air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in the same direction, while in at least one other air gap the magnetic fluxes of the permanent magnet and of the electromagnet extend in opposite directions.

Abstract: An electromagnet is proposed which serves in particular to actuate a fuel injection valve for fuel injection systems in internal combustion engines. The electromagnet includes a first pole piece disposed at one side of a first permanent magnet and a second pole piece disposed at the other side of the first permanent magnet. The pole pieces each have one conduction section bent at an angle, which sections are oriented toward one another and define a gap therebetween. Divided from the first permanent magnet by the conduction sections, a magnet coil is disposed on each pole piece. The first pole piece has a pole oriented toward the armature, and the second pole piece has a pole. When the magnet coils are not excited, the armature is drawn in the direction toward the poles by one component (.phi..sub.p2) of the permanent magnetic flux. If the magnet coils experience a flow through them of a current (i) in such a manner that an electromagnetic flux (.phi..sub.