Abstract: A method for cleaning deposits from a wave energy converter includes driving at least one rotatably mounted component that is coupled to an energy converter. The energy converter is configured to convert energy from wave motion of a fluid into a different form of energy. A negative energy balance of the wave energy converter is present during the cleaning over an average period of time.

Abstract: In a method for setting the distance between an electrode and a workpiece in electrochemical metal working, the electrode is moved by an oscillating drive system, in which an acceleration signal of the oscillating drive system is picked up, the acceleration signal is divided into individual sections, characteristic magnitudes of the individual sections of the acceleration signal are determined, the characteristic magnitudes of the individual sections are compared to one another and the distance of the electrode from the workpiece is adjusted in response to a deviation of the characteristic magnitudes from the specified values. A device for carrying out the method includes an electrode, that is connected to a drive axis, an oscillating motion being able to be transferred to the electrode via the drive axis. A sensor is situated on the drive axis which picks up acceleration signals.

Abstract: The invention relates to a fuel cell, having a first electrode, a second electrode, and a membrane element, in which the membrane element is disposed between the first electrode and the second electrode. At least one of the electrodes has a flow field plate and at least one flow conduit, through which a reactant can be conducted, extends in at least one outer surface of the flow field plate. According to the invention, it is provided that the flow field plate has at least one microreaction chamber, and the microreaction chamber is disposed in the outer surface and on the flow conduit. A catalyst is disposed on at least a part of the microreaction chamber in such a way that the catalyst has contact simultaneously with the membrane element and the inflowing reactant.

Abstract: In a method for producing bores, a tool connected as a cathode and a workpiece connected as an anode are connected to a voltage source. The workpiece and the tool are connected to one another in an electrically conductive manner via an electrolyte, and an electrical potential difference between the workpiece and the tool is formed at least at times for removing material from the workpiece. Furthermore, the workpiece and the tool are subjected to a relative movement in relation to one another for producing the bore. The potential difference between the workpiece and the tool is formed by a corresponding voltage level in such a way that a gas-vapor envelope which surrounds the tool is formed.

Abstract: A fuel injector, which has a valve-seat body with a fixed valve-seat surface, a valve-closure member cooperating with the valve seat for the opening and closing of the valve. The valve-seat body is accommodated in a longitudinal opening of a valve-seat support and fixedly joined thereto. An atomizer front piece is galvanically premolded directly on a lower end face of the valve-seat body in an adhesive manner. At least one spray-discharge orifice is provided in the atomizer front piece, which preferably widens in a funnel shape in the downstream direction. The fuel injector is particularly suitable for use in fuel-injection systems of mixture-compressing internal combustion engines having externally supplied ignition.

Abstract: In a method for setting the distance between an electrode and a workpiece in electrochemical metal working, the electrode is moved by an oscillating drive system, in which an acceleration signal of the oscillating drive system is picked up, the acceleration signal is divided into individual sections, characteristic magnitudes of the individual sections of the acceleration signal are determined, the characteristic magnitudes of the individual sections are compared to one another and the distance of the electrode from the workpiece is adjusted in response to a deviation of the characteristic magnitudes from the specified values. A device for carrying out the method includes an electrode, that is connected to a drive axis, an oscillating motion being able to be transferred to the electrode via the drive axis. A sensor is situated on the drive axis which picks up acceleration signals.

Abstract: The invention relates to a fuel cell, having a first electrode, a second electrode, and a membrane element, in which the membrane element is disposed between the first electrode and the second electrode. At least one of the electrodes has a flow field plate and at least one flow conduit, through which a reactant can be conducted, extends in at least one outer surface of the flow field plate. According to the invention, it is provided that the flow field plate has at least one microreaction chamber, and the microreaction chamber is disposed in the outer surface and on the flow conduit. A catalyst is disposed on at least a part of the microreaction chamber in such a way that the catalyst has contact simultaneously with the membrane element and the inflowing reactant.

Abstract: The invention relates to a high-pressure connection, such as in a fuel injector, having two sealing faces which bear against one another, and to a method for producing a high-pressure connection of this type. In order to improve the sealing action of a high-pressure connection of this type, at least one of the sealing faces is provided with a partial coating. The partial coating is produced by electroforming.

Abstract: A method is shown for phosphating metal layers by electrolytic deposition from acid aqueous solutions which contain at least zinc ions and phosphate ions, while simultaneously applying direct current. Simultaneously with the depositing of the phosphating layer, an electrolytic deposition of zinc takes place in the same electrolyte. The current density, in this context, is in the range of>A/dm2.

Abstract: A fuel supply system, having a housing, in which a pistonlike element is disposed longitudinally displaceably in a bore and is guided sealingly in the bore by a guide portion. On one end, the guide portion adjoins a first fuel-filled chamber, and on its other end it adjoins a second fuel-filled chamber. At least one recess extending at least approximately in the circumferential direction is embodied in the guide portion of the pistonlike element and extends over at least part of the circumference of the pistonlike element and, viewed in the longitudinal direction of the pistonlike element, has an asymmetrical cross section.

Abstract: A method for removing metallic material of a workpiece, using the flow of current between an electrode and the workpiece in the presence of an electrolyte. In this context, a relative movement occurs between the electrode and the workpiece as a function of time. In addition, it is provided that at least one further process parameter be regulated and/or changed as a function of time.

Abstract: A piezoceramic actuator includes a monolithic stack of thin piezoceramic films having internal electrodes arranged between the films, and rail-like elements electrochemically shaped onto the internal electrodes on outer sides of the stack. The internal electrodes can thereby be interconnected, via a suitable conductive element, in electrically conductive fashion at a certain distance from the side edges of the piezoceramic films so that these films form a continuous planar electrically conductive ribbon.

Abstract: A method for producing a component out of stacked plates (9, 10) soldered to one another, into at least some of which recesses (11, 12, 13) are made, is proposed, in which at least one solder layer (8) is provided between the plates (9, 10) for a solder diffusion process. According to the invention, the plates (9, 10), with solder layers (8) between them, are stacked on one another and compressed in the cold state before the solder diffusion process. With this provision, the use of complicated pressing tools in the actual solder diffusion process is avoided.

Abstract: A fuel supply system, having a housing (1), in which a pistonlike element (5) is disposed longitudinally displaceably in a bore (3) and is guided sealingly in the bore (3) by a guide portion (105). On one end, the guide portion (105) adjoins a first fuel-filled chamber (19), and on its other end it adjoins a second fuel-filled chamber (15). At least one recess (30) extending at least approximately in the circumferential direction is embodied in the guide portion (105) of the pistonlike element (5) and extends over at least part of the circumference of the pistonlike element (5) and, viewed in the longitudinal direction of the pistonlike element (5), has an asymmetrical cross section (FIG. 1).

Abstract: A swirl disk is composed of at least one metallic material, and is configured as having at least one intake area and at least one outlet orifice, the at least one outlet orifice being introduced in a lower base layer, and having at least two swirl channels emptying into a swirl chamber, the swirl chamber being provided in a central swirl-producing layer. An upper layer is configured as a cover layer, which over its entire cross-sectional surface represents a closed layer without orifice contours. All the layers of the swirl disk are directly built up on top of each other using electroplating metal deposition (multilayer electroplating). The swirl disk is suitable for a use in a fuel injection valve, in particular in a high-pressure injection valve for directly injecting the fuel into a combustion chamber of a mixture-compressing, external-ignition internal combustion engine.

Abstract: A method for producing a component out of stacked plates (9, 10) soldered to one another, into at least some of which recesses (11, 12, 13) are made, is proposed, in which at least one solder layer (8) is provided between the plates (9, 10) for a solder diffusion process. According to the invention, the plates (9, 10), with solder layers (8) between them, are stacked on one another and compressed in the cold state before the solder diffusion process. With this provision, the use of complicated pressing tools in the actual solder diffusion process is avoided.

Abstract: A device for holding components made of a ferromagnetic material that are arranged consecutively in a row and are held in place with one contact surface resting against at least two adjacent magnetic poles of opposite polarity, with the magnetic lines of force between the magnetic poles being concentrated in a region close to the contact surface of the components without magnetically influencing the working surfaces opposite the contact surfaces, in which the component holding capacity of the device is considerably increased, without impairing the residual magnetic field in the edge areas, by arranging multiple rows of the components parallel to each other and assigning to the outer rows of the components additional magnetic circuits that divert or compensate for the residual magnetic field of the working surfaces of the components.

Abstract: A method of removing deposits of material which are formed in laser machining is described. The deposits are removed by at least one of the methods—pickling method and/or electropolishing method.

Abstract: In a method for manufacturing a nozzle plate, two parts of the nozzle plate are fabricated separately from one another. The fabrication of the two parts is carried out by microstructuring/lithography, electroforming and plastic molding. Advantageously, a filter structure is provided in the first part. The two parts are joined together by means of laser welding, diffusion soldering or a chemical joining process. The nozzle plate is particularly well suited for injection valves, atomization nozzles, paint spray nozzles or other spraying systems.